WO2022052248A1 - Infusion needle structure of drug infusion device - Google Patents

Infusion needle structure of drug infusion device Download PDF

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Publication number
WO2022052248A1
WO2022052248A1 PCT/CN2020/125031 CN2020125031W WO2022052248A1 WO 2022052248 A1 WO2022052248 A1 WO 2022052248A1 CN 2020125031 W CN2020125031 W CN 2020125031W WO 2022052248 A1 WO2022052248 A1 WO 2022052248A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle holder
needle
infusion
infusion device
drug
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/125031
Other languages
French (fr)
Inventor
Cuijun YANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medtrum Technologies Inc
Original Assignee
Medtrum Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medtrum Technologies Inc filed Critical Medtrum Technologies Inc
Priority to US18/022,756 priority Critical patent/US12508362B2/en
Priority to EP20953033.6A priority patent/EP4210792A4/en
Priority to US18/033,359 priority patent/US20230398287A1/en
Priority to EP21884245.8A priority patent/EP4237039A4/en
Priority to US18/033,076 priority patent/US20230390488A1/en
Priority to CN202110008706.2A priority patent/CN114432538B/en
Priority to CN202110007433.XA priority patent/CN114432535B/en
Priority to CN202110008701.XA priority patent/CN114432537B/en
Priority to EP21884244.1A priority patent/EP4237042A4/en
Priority to EP21884246.6A priority patent/EP4237040A4/en
Priority to US18/034,066 priority patent/US20230405221A1/en
Priority to PCT/CN2021/070207 priority patent/WO2022088498A1/en
Priority to PCT/CN2021/070209 priority patent/WO2022088500A1/en
Priority to EP21884247.4A priority patent/EP4237041A4/en
Priority to PCT/CN2021/070208 priority patent/WO2022088499A1/en
Priority to US18/032,808 priority patent/US20230390487A1/en
Priority to CN202110007418.5A priority patent/CN114432534A/en
Priority to PCT/CN2021/070211 priority patent/WO2022088501A1/en
Priority to PCT/CN2021/102333 priority patent/WO2022052574A1/en
Priority to US18/022,755 priority patent/US20230320627A1/en
Priority to EP21865630.4A priority patent/EP4210784A4/en
Priority to CN202110710430.2A priority patent/CN114146253B/en
Publication of WO2022052248A1 publication Critical patent/WO2022052248A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0204—Operational features of power management
    • A61B2560/0209—Operational features of power management adapted for power saving
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M2005/14208—Pressure infusion, e.g. using pumps with a programmable infusion control system, characterised by the infusion program
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • A61M2005/14252—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type with needle insertion means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M2005/14268—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body with a reusable and a disposable component
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • A61M2005/14533—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons cam actuated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0266—Shape memory materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/10—General characteristics of the apparatus with powered movement mechanisms
    • A61M2205/106—General characteristics of the apparatus with powered movement mechanisms reciprocating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers

Definitions

  • the present invention mainly relates to the field of medical instruments, in particular to an infusion needle structure of a drug infusion device.
  • a drug infusion device can continuously deliver drug into a patient’s body for disease treatment.
  • Drug infusion devices are widely used in the field of diabetes treatment, which continuously infuse required dosage of insulin into the patient’s subcutaneous tissue, thereby simulating the secretion function of the pancreas to keep the blood glucose stable.
  • the drug fluid is usually stored inside the infusion pump.
  • the existing drug infusion device, controlled by remote device, is usually attached directly on the patient's skin through a medical adhesive tape.
  • the drug infusion device in prior arts needs to be replaced with a new infusion device after the drug is exhausted.
  • a part of the infusion needle is still under the skin during the process of tearing it off from the skin. This part of the infusion needle is easy to accidentally bring the skin trauma, aggravating the user's pain, and increasing the user's chance of skin infection.
  • the embodiment of the invention discloses an infusion needle structure of a drug infusion device.
  • the infusion device is replaced, using the unlock rod and the unlock hole, the user releases and resets the needle holder arranged in the middle position of the infusion device prior to tear the tape pasted on the skin surface, thereby removing the subcutaneous end of the infusion needle from the skin, and avoiding the skin trauma caused by the exposed portion of the infusion needle during the replacement, which enhances the user experience.
  • the invention discloses an infusion needle structure of a drug infusion device, which comprises: an infusion needle including a front end and a back end; a needle holder provided with at least one auxiliary fastener, the infusion needle is arranged on the needle holder, when the needle holder is in the working position, the back end is pierced into the skin while the front end is connected with the drug storage unit; one fastening portion, arranged inside the infusion device, cooperates with the auxiliary fastener to lock the needle holder in the working position; an unlock hole provided on the needle holder or on the housing of the infusion device; and an unlock rod that can be inserted into the unlock hole and pushed, thus releasing and resetting the needle holder.
  • the needle holder includes a guide post which can move along a guide chamber that is provided in the housing.
  • the auxiliary fastener is arranged on the guide post or under the top of the needle holder, and the auxiliary fastener or the fastening portion includes a fastening hole, a fastening block, a fastening slot, or a fastening hook.
  • the mode for forcing to release and reset the needle holder includes a pop-up mode or a pushing mode.
  • it further includes a spring, arranged in the guide chamber, which is compressed by the needle holder when the needle holder is in the working position.
  • the fastening portion and the auxiliary fastener are fastened with each other directly, when being unlocked, the end of the fastening portion is pushed by the unlock rod to move a certain distance to release the auxiliary fastener fastened by the fastening portion, and the spring exerts a resilient force toward the needle holder.
  • the present invention further includes a locking lever, the auxiliary fastener is a fastening hole or a fastening slot, the first end of the locking lever is movably arranged inside the auxiliary fastener while the second end is fastened by the fastening portion, the fulcrum of the locking lever is arranged between the two ends of the locking lever, and the second end is pushed by the unlock rod to move a certain distance to release the locking lever and the needle holder.
  • it further includes a limit component, arranged on the housing, which is used to limit the position of the needle holder when the needle holder is in the non-working position.
  • the unlock rod is arranged on the limit component.
  • the side surface of the guide post is provided with convexes or concaves while the limit component is provided with a fastening cantilever which is used to cooperate with the convexes or concaves to limit the position of the needle holder.
  • the opening of the unlock hole is provided on the top of the needle holder or the housing, or on the side wall of the housing.
  • the opening of the unlock hole is provided on the top of the needle holder, and the longitudinal directions of the unlock hole and the guide post are parallel to each other.
  • an unlock hole provided on the needle holder or on the housing of the infusion device; and an unlock rod that can be inserted into the unlock hole and pushed, thus releasing and resetting the needle holder.
  • the infusion needle structure further includes a spring, arranged in the guide chamber, which is compressed by the needle holder when the needle holder is in the working position. Once the spring is set, the needle holder can pop-up and be automatically reset after being released, which optimizes the releasing and resetting process and facilitates the user's operation.
  • the infusion needle structure further includes a locking lever
  • the auxiliary fastener is a fastening hole or a fastening slot
  • the first end of the locking lever is movably arranged inside the auxiliary fastener while the second end is fastened by the fastening portion
  • the fulcrum of the locking lever is arranged between the two ends of the locking lever.
  • the fulcrum is arranged between the two ends, making the movement direction of the two ends opposite. Therefore, while the second end is pushed by the unlock rod, the first end can move to force the needle holder out, which enhances the dexterity of internal structure.
  • the infusion needle structure further includes a limit component, arranged on the housing, which is used to limit the position of the needle holder when the needle holder is in the non-working position.
  • the limit component can avoid the needle holder falling off from the guide chamber, and prevent the infusion needle from being touched and piercing the skin by mistake.
  • the opening of the unlock hole is provided on the top of the needle holder, and the longitudinal directions of the unlock hole and the guide post are parallel to each other.
  • the two parallel longitudinal directions make user just only apply a small force to release the needle holder, simplifying the operation.
  • FIG. 1a is a schematic view of a partial structure of the drug infusion device according to an embodiment of the present invention.
  • FIG. 1b is a schematic view of the infusion needle structure taken along the section line A-A' in FIG. 1a;
  • FIG. 2 is a schematic view of a needle holder installed in the working position according to an embodiment of the present invention
  • FIG. 3a -FIG. 3c are schematic views of the principle structure of the unlock rod releasing the needle holder according to different embodiments of the present invention.
  • FIG. 4a -FIG. 4b are respectively schematic views before and after the unlock rod releases the needle holder according to another embodiment of the present invention.
  • the prior art drug infusion device needs to be torn from the skin surface to replace a new infusion device after the drug is exhausted, but the un-retracted infusion needle will hurt the skin during the tearing process, which brings trauma, aggravates the user's pain, and increases the chance of skin infection.
  • the present invention provides an infusion needle structure of a drug infusion device. Using the unlock rod and the unlock hole, the user can release and reset the needle holder, so that the subcutaneous end of the infusion needle can be removed out of the skin, avoiding the skin trauma during the replacement process, and enhancing the user experience.
  • FIG. 1a is a schematic view of a partial of the structure of the drug infusion device according to an embodiment of the present invention.
  • FIG. 1b is a schematic view of the infusion needle structure taken along the section line A-A' in FIG. 1a.
  • the view angle of the structure in FIG. 3b, FIG. 3c, FIG. 4a, or FIG. 4b is the same as it in FIG. 1b, which will not be described again below.
  • the infusion device of the embodiment of the present invention is a patch-type drug infusion device, that is, the infusion needle is integrated on the infusion device without a long tube.
  • the infusion device includes a housing 100 where each structure of the infusion unit (such as a driving unit, a drug storage unit, etc. ) is arranged.
  • the infusion needle structure arranged on the housing 100, is used to set the infusion needle 130, making the drug flow from the drug storage unit to the skin.
  • the infusion needle structure is arranged in the middle position of the infusion device, so that the internal structure of the infusion device can be optimized, reducing the volume size of the infusion device.
  • the infusion needle structure includes a needle holder 120 and an infusion needle 130.
  • the infusion needle 130 arranged on the needle holder 120, includes a front end 130a and a back end 130b both of which extend out of the needle holder 120, as shown in FIG. 1b.
  • the front end 130a is used to communicate with the drug storage unit while the back end 130b is used to pierce the skin.
  • the needle holder 120 has multiple positions, such as an initial position and a working position.
  • the front end 130a is not in communication with the drug storage unit, so the drug cannot enter the infusion needle 130, and the back end 130b of the infusion needle is not exposed outside the housing 100.
  • the front end 130a is in communication with the drug storage unit while the back end 130b is pierced under the skin, therefore, the drug can be injected under the skin.
  • the needle holder 120 may also include three or more different positions, such as an initial position, an intermediate position and a working position.
  • the middle position is used for priming, making the drug exhaust the air in the infusion needle 130 previously.
  • the needle holder 120 is also provided with an auxiliary fastener 122 for fixing the needle holder 120 in a specific position.
  • the inside of the drug infusion device is also provided with a fastening portion 150 for cooperating with the auxiliary fastener 122 to lock the needle holder 120, such as, in the working position.
  • the auxiliary fastener 122 or the fastening portion 150 includes a fastening hole, a fastening block, a fastening slot or a fastening hook, and the like, which will be described in detail below.
  • the cooperation between the fastening portion 150 and the auxiliary fastener 122 includes direct or indirectly fastening of the two, which will be described in detail below.
  • the infusion needle structure further includes a limit component 110 disposed on the housing 100 and used to limit the infusion needle structure in the non-working position, which can prevent the needle holder 120 from falling off from the guide chamber (described in detail below) , and prevent the infusion needle from being touched and piercing the skin by mistake.
  • a limit component 110 disposed on the housing 100 and used to limit the infusion needle structure in the non-working position, which can prevent the needle holder 120 from falling off from the guide chamber (described in detail below) , and prevent the infusion needle from being touched and piercing the skin by mistake.
  • the needle holder 120 of the infusion needle structure is further provided with a guide post 121 while the housing 100 is also provided with a guide chamber (not shown) .
  • the guide post 121 can move along the guide chamber, making the needle holder 120 reach different positions.
  • a locking cantilever 112 is further provided on the limit component 110. Therefore, the limit component 110 cooperates with the convexes or concaves 123, provided on the side surface of the guide post 121, by fastening the locking cantilever 112 to limit the needle holder 120 at the initial position.
  • the limit component 110 in the operation steps before the needle holder 120 is installed to the working position, the limit component 110 needs to be removed from the housing 100 to eliminate the movement disorders of the needle holder 120. As described below, when the needle holder 120 needs to be released and reset, the limit component 110 can be reused.
  • the auxiliary fastener 122 may be provided on the guide post 121 or at other positions of the needle holder 120, which will not be specifically limited herein.
  • the auxiliary fastener 122 is disposed under the top of the needle holder 120, as shown in FIG. 1b.
  • a spring 160 is also provided in the guide chamber. After the spring 160 is provided, the needle holder can pop-up and be automatically reset after being released, which optimizes the resetting process and facilitates the user's operation.
  • the spring 160 is compressed and provides resilience to the needle holder 120.
  • the spring 160 is covered on the bottom end of the guide post 121. However, due to the fastening portion 150 and the auxiliary fastener 122 are fastened with each other, the resilience of the spring 160 cannot be released.
  • the bottom of the guide post 121 directly contacts and presses the top of the spring 160.
  • FIG. 2 is a schematic view of the needle holder 120 installed in the working position in the embodiment of the present invention.
  • the auxiliary fastener 122 and the fastening portion 150 are fastened with each other, making the needle holder 120 installed to the working position, therefore, the spring 160 is compressed. At this time, the drug can flow from the drug storage unit into body through the infusion needle 130.
  • the infusion needle structure of the embodiment of the present invention further includes an unlock hole 170 and an unlock rod 180 (as shown in FIG. 1a) .
  • the unlock rod 180 can be inserted into the unlock hole 170. Pushing the unlock rod 180 can release and reset the locked needle holder 120, whose working principle will be described in detail below.
  • the unlock rod 180 can be provided in the infusion device, or a separate component attached to the product purchased by the user.
  • the unlock rod 180 is disposed on the limit component 110, such as at one end of the limit component 110 (as shown in FIG. 1a) .
  • the unlock rod 180 is provided as a separate component in the product of the infusion device.
  • FIG. 3a -FIG. 3c are schematic views of the unlock rod 180 releasing the needle holder 120 in different embodiments of the present invention.
  • FIG. 3a is a schematic view of the infusion needle structure taken along the section line B-B' in FIG. 2.
  • the mode for forcing to release and reset the needle holder 120 in the embodiment of the present invention includes a pop-up mode, that is, the releasing and resetting process of the needle holder 120 requires the resilient force of the spring 160.
  • the principle of releasing and resetting the needle holder 120 is as follows. The front end of the unlock rod 180, inserted into the unlock hole 170, acts on the fastening portion 150. And then, while pushing the unlock rod 180, the end of the fastening portion 150 is tilted and moves a certain distance, thereby releasing the fastening of the auxiliary fastener 122. Therefore, under the action of the resilience of the spring 160, the needle holder 120 is released and reset from the working position to the initial position, thus, the back end 130b of the infusion needle moves out of the skin, or even retracts into the infusion device.
  • the opening of the unlock hole 170 may also be provided on the top or side wall of the housing 100.
  • the opening of the unlock hole 170 is provided on the top of the infusion device housing 100.
  • the opening of the unlock hole (not shown) is provided on the side wall of the housing 100.
  • the unlock rod 180 is being inserted into the unlock hole, the top end of the fastening portion 150 is pushed to move to one side, thereby releasing the fastening of the fastening portion 150 with the auxiliary fastener 122, and also releasing the needle holder 120.
  • the opening of the unlock hole 170 can also be provided on the top of the needle holder 120. Similarly, pushing the unlock rod 180 into the unlock hole 170 can make the end of the fastening portion 150 move a certain distance, as shown in FIG. 3c.
  • FIG. 4a -FIG. 4b are schematic views of before and after the unlock rod 280 releases and resets the needle holder 220 according to another embodiment of the present invention.
  • the mode for forcing to release and reset the needle holder 220 also includes a pushing mode, that is, the releasing and resetting process of the needle holder 220 does not rely on the elastic force of the spring, instead by continuously pushing the unlock rod 280.
  • the infusion needle structure further includes a locking lever 290.
  • the fastening portion 250 is a fastening slot while the auxiliary fastener 222 is a fastening hole or a fastening slot provided on side surface of the guide post 221.
  • the fastening portion 250 cooperates with the auxiliary fastener 222 through the locking lever 290 to realize the locking of the needle holder 220, that is, the fastening portion 250 and the auxiliary fastener 222 are indirectly fastened, and the locking lever 290 is used as a transition component.
  • the locking lever 290 includes a first end and a second end, and its fulcrum is set on the housing 200 and between these two ends.
  • the first end of the locking lever 290 is movably arranged inside the auxiliary fastener 222. Since the movable range of the needle holder 220 is limited, the first end of the locking lever 290 is always located inside the auxiliary fastener 222. Before the needle holder 220 is released and reset, the second end of the auxiliary fastener 222 and the fastening portion 250 are fastened with each other to lock the needle holder 220 in the working position, as shown in FIG. 4a.
  • the principle of releasing and resetting the needle holder 220 by the unlock rod 280 is as follows. After the unlock rod 280 is inserted into the unlock hole 270, pushing the unlock rod 280, the second end of the locking lever 290 is forced, therefore, the end of the fastening portion 250 moves to its one side due to the force received from the second end of the locking lever 290, thus, making the locking lever 290 unlocked, and making the needle holder 220 reset and released. Obviously, because there is no spring inside the infusion device, the user needs to continue to push the unlock rod 280. Using the principle of leverage (the arrows in FIG. 4b indicate the direction of the force F and the releasing and the resetting direction D of the needle holder 220, respectively) , the user releases and resets the needle holder, which makes the back end 230b of the infusion needle remove out of the skin.
  • the opening of the unlock hole 270 is provided on the top of the needle holder 220, and the longitudinal directions of the unlock hole 270 and the guide post 221 are parallel to each other.
  • a spring may also be provided inside the infusion device. At this time, the user only just needs to release the second end of the locking lever 290 without continuously pushing the unlock rod 280. Therefore, under the action of the spring's resilience, the needle holder 220 can be release and reset, which is similar with the foregoing.
  • the present invention discloses an infusion needle structure of a drug infusion device.
  • the infusion device is replaced, using the unlock rod and the unlock hole, the user releases and resets the needle holder arranged in the middle position of the infusion device prior to tear the tape pasted on the skin surface, thereby removing the subcutaneous end of the infusion needle from the skin, and avoiding the skin trauma caused by the exposed portion of the infusion needle during the replacement, which enhances the user experience.

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Abstract

Infusion needle structure of drug infusion device comprises: an infusion needle (130) including a front end (130a) and a back end (130b); a needle holder (120) provided with at least one auxiliary fastener (122); one fastening portion (150), arranged inside the infusion device, cooperates with the auxiliary fastener (122) to lock the needle holder (120) in the working position; an unlock hole (170) provided on the needle holder (120) or on the housing (100) of the infusion device; and an unlock rod (180) that can be inserted into the unlock hole (170) and pushed, thus releasing and resetting the needle holder (120). The infusion needle (130) can be reset and released when the infusion device is during replacement.

Description

[Title established by the ISA under Rule 37.2] INFUSION NEEDLE STRUCTURE OF DRUG INFUSION DEVICE TECHNICAL FIELD
The present invention mainly relates to the field of medical instruments, in particular to an infusion needle structure of a drug infusion device.
BACKGROUND
A drug infusion device can continuously deliver drug into a patient’s body for disease treatment. Drug infusion devices are widely used in the field of diabetes treatment, which continuously infuse required dosage of insulin into the patient’s subcutaneous tissue, thereby simulating the secretion function of the pancreas to keep the blood glucose stable. The drug fluid is usually stored inside the infusion pump. The existing drug infusion device, controlled by remote device, is usually attached directly on the patient's skin through a medical adhesive tape.
At present, the drug infusion device in prior arts needs to be replaced with a new infusion device after the drug is exhausted. However, a part of the infusion needle is still under the skin during the process of tearing it off from the skin. This part of the infusion needle is easy to accidentally bring the skin trauma, aggravating the user's pain, and increasing the user's chance of skin infection.
Therefore, in the prior art, there is an urgent need for an infusion needle structure of a drug infusion device that can release and reset the infusion needle when the infusion device is during replacement.
BRIEF SUMMARY OF THE INVENTION
The embodiment of the invention discloses an infusion needle structure of a drug infusion device. When the infusion device is replaced, using the unlock rod and the unlock hole, the user releases and resets the needle holder arranged in the middle position of the infusion device prior to tear the tape pasted on the skin surface, thereby removing the subcutaneous end of the infusion needle from the skin, and avoiding the skin trauma caused by the exposed portion of the infusion needle during the replacement, which enhances the user experience.
The invention discloses an infusion needle structure of a drug infusion device, which comprises: an infusion needle including a front end and a back end; a needle holder provided with at least one auxiliary fastener, the infusion needle is arranged on the needle holder, when the needle holder is in the working position, the back end is pierced into the skin while the front end is connected with the drug storage unit; one fastening portion, arranged inside the infusion device, cooperates with the auxiliary fastener to lock the needle holder in the working position; an unlock hole provided on the needle holder or on the housing of the infusion device; and an unlock rod that can be inserted into the unlock hole and pushed, thus releasing and resetting the needle holder.
According to one aspect of the present invention, the needle holder includes a guide post which can move along a guide chamber that is provided in the housing.
According to one aspect of the present invention, the auxiliary fastener is arranged on the guide post or under  the top of the needle holder, and the auxiliary fastener or the fastening portion includes a fastening hole, a fastening block, a fastening slot, or a fastening hook.
According to one aspect of the present invention, the mode for forcing to release and reset the needle holder includes a pop-up mode or a pushing mode.
According to one aspect of the present invention, it further includes a spring, arranged in the guide chamber, which is compressed by the needle holder when the needle holder is in the working position.
According to one aspect of the present invention, the fastening portion and the auxiliary fastener are fastened with each other directly, when being unlocked, the end of the fastening portion is pushed by the unlock rod to move a certain distance to release the auxiliary fastener fastened by the fastening portion, and the spring exerts a resilient force toward the needle holder.
According to one aspect of the present invention, it further includes a locking lever, the auxiliary fastener is a fastening hole or a fastening slot, the first end of the locking lever is movably arranged inside the auxiliary fastener while the second end is fastened by the fastening portion, the fulcrum of the locking lever is arranged between the two ends of the locking lever, and the second end is pushed by the unlock rod to move a certain distance to release the locking lever and the needle holder.
According to one aspect of the present invention, it further includes a limit component, arranged on the housing, which is used to limit the position of the needle holder when the needle holder is in the non-working position.
According to one aspect of the present invention, the unlock rod is arranged on the limit component.
According to one aspect of the present invention, the side surface of the guide post is provided with convexes or concaves while the limit component is provided with a fastening cantilever which is used to cooperate with the convexes or concaves to limit the position of the needle holder.
According to one aspect of the present invention, the opening of the unlock hole is provided on the top of the needle holder or the housing, or on the side wall of the housing.
According to one aspect of the present invention, the opening of the unlock hole is provided on the top of the needle holder, and the longitudinal directions of the unlock hole and the guide post are parallel to each other.
Compared with the prior art, the technical solution of the present invention has the following advantages:
In the infusion needle structure of the drug infusion device disclosed in the present invention, an unlock hole provided on the needle holder or on the housing of the infusion device; and an unlock rod that can be inserted into the unlock hole and pushed, thus releasing and resetting the needle holder. After the needle holder is released and reset, the subcutaneous end of the infusion needle can be removed out of the skin, avoiding the exposed portion of the infusion needle to hurt the skin while the infusion device is being replaced.
Furthermore, the infusion needle structure further includes a spring, arranged in the guide chamber, which is compressed by the needle holder when the needle holder is in the working position. Once the spring is set, the needle holder can pop-up and be automatically reset after being released, which optimizes the releasing and resetting process and facilitates the user's operation.
Furthermore, the infusion needle structure further includes a locking lever, the auxiliary fastener is a fastening hole or a fastening slot, the first end of the locking lever is movably arranged inside the auxiliary fastener while the second end is fastened by the fastening portion, the fulcrum of the locking lever is arranged between the two ends of the locking lever. The fulcrum is arranged between the two ends, making the movement direction  of the two ends opposite. Therefore, while the second end is pushed by the unlock rod, the first end can move to force the needle holder out, which enhances the dexterity of internal structure.
Furthermore, the infusion needle structure further includes a limit component, arranged on the housing, which is used to limit the position of the needle holder when the needle holder is in the non-working position. The limit component can avoid the needle holder falling off from the guide chamber, and prevent the infusion needle from being touched and piercing the skin by mistake.
Furthermore, the opening of the unlock hole is provided on the top of the needle holder, and the longitudinal directions of the unlock hole and the guide post are parallel to each other. The two parallel longitudinal directions make user just only apply a small force to release the needle holder, simplifying the operation.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1a is a schematic view of a partial structure of the drug infusion device according to an embodiment of the present invention;
FIG. 1b is a schematic view of the infusion needle structure taken along the section line A-A' in FIG. 1a;
FIG. 2 is a schematic view of a needle holder installed in the working position according to an embodiment of the present invention;
FIG. 3a -FIG. 3c are schematic views of the principle structure of the unlock rod releasing the needle holder according to different embodiments of the present invention;
FIG. 4a -FIG. 4b are respectively schematic views before and after the unlock rod releases the needle holder according to another embodiment of the present invention.
DETAILED DESCRIPTION
As mentioned above, the prior art drug infusion device needs to be torn from the skin surface to replace a new infusion device after the drug is exhausted, but the un-retracted infusion needle will hurt the skin during the tearing process, which brings trauma, aggravates the user's pain, and increases the chance of skin infection.
In order to solve this problem, the present invention provides an infusion needle structure of a drug infusion device. Using the unlock rod and the unlock hole, the user can release and reset the needle holder, so that the subcutaneous end of the infusion needle can be removed out of the skin, avoiding the skin trauma during the replacement process, and enhancing the user experience.
Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. The relative arrangement of the components and the steps, numerical expressions and numerical values set forth in the embodiments are not to be construed as limiting the scope of the invention.
In addition, it should be understood that, for ease of description, the dimensions of the various components shown in the figures are not necessarily drawn in the actual scale relationship, for example, the thickness, width, length or distance of certain units may be exaggerated relative to other structures.
The following description of the exemplary embodiments is merely illustrative, and is not intended to be in any way limiting the invention and its application or use. The techniques, methods and devices that are known to those of ordinary skill in the art may not be discussed in detail, but such techniques, methods and devices  should be considered as part of the specification.
It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once an item is defined or illustrated in a drawing, it will not be discussed further in following description of the drawings.
FIG. 1a is a schematic view of a partial of the structure of the drug infusion device according to an embodiment of the present invention. FIG. 1b is a schematic view of the infusion needle structure taken along the section line A-A' in FIG. 1a. The view angle of the structure in FIG. 3b, FIG. 3c, FIG. 4a, or FIG. 4b is the same as it in FIG. 1b, which will not be described again below.
As shown in FIG. 1a, the infusion device of the embodiment of the present invention is a patch-type drug infusion device, that is, the infusion needle is integrated on the infusion device without a long tube.
The infusion device includes a housing 100 where each structure of the infusion unit (such as a driving unit, a drug storage unit, etc. ) is arranged. The infusion needle structure, arranged on the housing 100, is used to set the infusion needle 130, making the drug flow from the drug storage unit to the skin. Preferably, in the embodiment of the present invention, the infusion needle structure is arranged in the middle position of the infusion device, so that the internal structure of the infusion device can be optimized, reducing the volume size of the infusion device.
The infusion needle structure includes a needle holder 120 and an infusion needle 130. The infusion needle 130, arranged on the needle holder 120, includes a front end 130a and a back end 130b both of which extend out of the needle holder 120, as shown in FIG. 1b. The front end 130a is used to communicate with the drug storage unit while the back end 130b is used to pierce the skin.
Generally, before the infusion device is attached on the skin surface, the back end 130b of the infusion needle is not exposed outside the housing 100 in order to avoid accidental trauma on the skin. After the infusion device being attached on the skin surface, the back end 130b of the infusion needle can be manipulated to pierce into the skin. Therefore, in the embodiment of the present invention, the needle holder 120 has multiple positions, such as an initial position and a working position. When the needle holder 120 is in the initial position, the front end 130a is not in communication with the drug storage unit, so the drug cannot enter the infusion needle 130, and the back end 130b of the infusion needle is not exposed outside the housing 100. When the needle holder 120 is in the working position, the front end 130a is in communication with the drug storage unit while the back end 130b is pierced under the skin, therefore, the drug can be injected under the skin.
It should be noted that in other embodiments of the present invention, the needle holder 120 may also include three or more different positions, such as an initial position, an intermediate position and a working position. The middle position is used for priming, making the drug exhaust the air in the infusion needle 130 previously.
In order to make the infusion needle 130 work normally, the needle holder 120 is also provided with an auxiliary fastener 122 for fixing the needle holder 120 in a specific position. At the same time, the inside of the drug infusion device is also provided with a fastening portion 150 for cooperating with the auxiliary fastener 122 to lock the needle holder 120, such as, in the working position. The auxiliary fastener 122 or the fastening portion 150 includes a fastening hole, a fastening block, a fastening slot or a fastening hook, and the like, which will be described in detail below.
It should be noted herein that the cooperation between the fastening portion 150 and the auxiliary fastener 122 includes direct or indirectly fastening of the two, which will be described in detail below.
In another embodiment of the present invention, the infusion needle structure further includes a limit  component 110 disposed on the housing 100 and used to limit the infusion needle structure in the non-working position, which can prevent the needle holder 120 from falling off from the guide chamber (described in detail below) , and prevent the infusion needle from being touched and piercing the skin by mistake.
Please continue to refer to FIG. 1a and FIG. 1b, preferably, in the embodiment of the present invention, the needle holder 120 of the infusion needle structure is further provided with a guide post 121 while the housing 100 is also provided with a guide chamber (not shown) . The guide post 121 can move along the guide chamber, making the needle holder 120 reach different positions. Preferably, in the embodiment of the present invention, a locking cantilever 112 is further provided on the limit component 110. Therefore, the limit component 110 cooperates with the convexes or concaves 123, provided on the side surface of the guide post 121, by fastening the locking cantilever 112 to limit the needle holder 120 at the initial position.
It should be noted that, in the embodiment of the present invention, in the operation steps before the needle holder 120 is installed to the working position, the limit component 110 needs to be removed from the housing 100 to eliminate the movement disorders of the needle holder 120. As described below, when the needle holder 120 needs to be released and reset, the limit component 110 can be reused.
The auxiliary fastener 122 may be provided on the guide post 121 or at other positions of the needle holder 120, which will not be specifically limited herein. Preferably, in the embodiment of the present invention, the auxiliary fastener 122 is disposed under the top of the needle holder 120, as shown in FIG. 1b.
A spring 160 is also provided in the guide chamber. After the spring 160 is provided, the needle holder can pop-up and be automatically reset after being released, which optimizes the resetting process and facilitates the user's operation. When the needle holder 120 is in the working position, the spring 160 is compressed and provides resilience to the needle holder 120. Preferably, in the embodiment of the present invention, the spring 160 is covered on the bottom end of the guide post 121. However, due to the fastening portion 150 and the auxiliary fastener 122 are fastened with each other, the resilience of the spring 160 cannot be released. In another embodiment of the present invention, the bottom of the guide post 121 directly contacts and presses the top of the spring 160.
FIG. 2 is a schematic view of the needle holder 120 installed in the working position in the embodiment of the present invention.
As shown in FIG. 2, the auxiliary fastener 122 and the fastening portion 150 are fastened with each other, making the needle holder 120 installed to the working position, therefore, the spring 160 is compressed. At this time, the drug can flow from the drug storage unit into body through the infusion needle 130.
The infusion needle structure of the embodiment of the present invention further includes an unlock hole 170 and an unlock rod 180 (as shown in FIG. 1a) . The opening of the unlock hole 170, arranged on the needle holder 120 or on the housing 100, serves as a working channel of the unlock rod 180 to release the needle holder 120. The unlock rod 180 can be inserted into the unlock hole 170. Pushing the unlock rod 180 can release and reset the locked needle holder 120, whose working principle will be described in detail below.
It should to be noted that the unlock rod 180 can be provided in the infusion device, or a separate component attached to the product purchased by the user. Preferably, in the embodiment of the present invention, the unlock rod 180 is disposed on the limit component 110, such as at one end of the limit component 110 (as shown in FIG. 1a) . In another embodiment of the present invention, the unlock rod 180 is provided as a separate component in the product of the infusion device.
FIG. 3a -FIG. 3c are schematic views of the unlock rod 180 releasing the needle holder 120 in different  embodiments of the present invention. FIG. 3a is a schematic view of the infusion needle structure taken along the section line B-B' in FIG. 2.
The mode for forcing to release and reset the needle holder 120 in the embodiment of the present invention includes a pop-up mode, that is, the releasing and resetting process of the needle holder 120 requires the resilient force of the spring 160. The principle of releasing and resetting the needle holder 120 is as follows. The front end of the unlock rod 180, inserted into the unlock hole 170, acts on the fastening portion 150. And then, while pushing the unlock rod 180, the end of the fastening portion 150 is tilted and moves a certain distance, thereby releasing the fastening of the auxiliary fastener 122. Therefore, under the action of the resilience of the spring 160, the needle holder 120 is released and reset from the working position to the initial position, thus, the back end 130b of the infusion needle moves out of the skin, or even retracts into the infusion device.
Obviously, according to the position of the fastening portion 150, the opening of the unlock hole 170 may also be provided on the top or side wall of the housing 100. Preferably, in the embodiment of the present invention, the opening of the unlock hole 170 is provided on the top of the infusion device housing 100.
As shown in FIG. 3b, the opening of the unlock hole (not shown) is provided on the side wall of the housing 100. Similarly, while the unlock rod 180 is being inserted into the unlock hole, the top end of the fastening portion 150 is pushed to move to one side, thereby releasing the fastening of the fastening portion 150 with the auxiliary fastener 122, and also releasing the needle holder 120.
It should be noted that the opening of the unlock hole 170 can also be provided on the top of the needle holder 120. Similarly, pushing the unlock rod 180 into the unlock hole 170 can make the end of the fastening portion 150 move a certain distance, as shown in FIG. 3c.
FIG. 4a -FIG. 4b are schematic views of before and after the unlock rod 280 releases and resets the needle holder 220 according to another embodiment of the present invention.
The mode for forcing to release and reset the needle holder 220 also includes a pushing mode, that is, the releasing and resetting process of the needle holder 220 does not rely on the elastic force of the spring, instead by continuously pushing the unlock rod 280.
Preferably, in the embodiment of the present invention, the infusion needle structure further includes a locking lever 290. The fastening portion 250 is a fastening slot while the auxiliary fastener 222 is a fastening hole or a fastening slot provided on side surface of the guide post 221. The fastening portion 250 cooperates with the auxiliary fastener 222 through the locking lever 290 to realize the locking of the needle holder 220, that is, the fastening portion 250 and the auxiliary fastener 222 are indirectly fastened, and the locking lever 290 is used as a transition component. The locking lever 290 includes a first end and a second end, and its fulcrum is set on the housing 200 and between these two ends. The first end of the locking lever 290 is movably arranged inside the auxiliary fastener 222. Since the movable range of the needle holder 220 is limited, the first end of the locking lever 290 is always located inside the auxiliary fastener 222. Before the needle holder 220 is released and reset, the second end of the auxiliary fastener 222 and the fastening portion 250 are fastened with each other to lock the needle holder 220 in the working position, as shown in FIG. 4a.
As shown in FIG. 4b, the principle of releasing and resetting the needle holder 220 by the unlock rod 280 is as follows. After the unlock rod 280 is inserted into the unlock hole 270, pushing the unlock rod 280, the second end of the locking lever 290 is forced, therefore, the end of the fastening portion 250 moves to its one side due to the force received from the second end of the locking lever 290, thus, making the locking lever 290 unlocked, and making the needle holder 220 reset and released. Obviously, because there is no spring inside the infusion  device, the user needs to continue to push the unlock rod 280. Using the principle of leverage (the arrows in FIG. 4b indicate the direction of the force F and the releasing and the resetting direction D of the needle holder 220, respectively) , the user releases and resets the needle holder, which makes the back end 230b of the infusion needle remove out of the skin.
In order to facilitate the user to apply a small force on the unlock rod 280 to reset the needle holder 220, preferably, in the embodiment of the present invention, the opening of the unlock hole 270 is provided on the top of the needle holder 220, and the longitudinal directions of the unlock hole 270 and the guide post 221 are parallel to each other.
It should be noted that, in another embodiment of the present invention, a spring may also be provided inside the infusion device. At this time, the user only just needs to release the second end of the locking lever 290 without continuously pushing the unlock rod 280. Therefore, under the action of the spring's resilience, the needle holder 220 can be release and reset, which is similar with the foregoing.
In summary, the present invention discloses an infusion needle structure of a drug infusion device. When the infusion device is replaced, using the unlock rod and the unlock hole, the user releases and resets the needle holder arranged in the middle position of the infusion device prior to tear the tape pasted on the skin surface, thereby removing the subcutaneous end of the infusion needle from the skin, and avoiding the skin trauma caused by the exposed portion of the infusion needle during the replacement, which enhances the user experience.

Claims (12)

  1. An infusion needle structure of a drug infusion device, characterized in that, comprising:
    an infusion needle including a front end and a back end;
    a needle holder provided with at least one auxiliary fastener, the infusion needle is arranged on the needle holder, when the needle holder is in the working position, the back end is pierced into the skin while the front end is connected with the drug storage unit;
    a fastening portion, arranged inside the infusion device, cooperates with the auxiliary fastener to lock the needle holder in the working position;
    an unlock hole provided on the needle holder or on the housing of the infusion device; and
    an unlock rod that can be inserted into the unlock hole and pushed, thus releasing and resetting the needle holder.
  2. An infusion needle structure of a drug infusion device of claim 1, characterized in that,
    the needle holder includes a guide post which can move along a guide chamber that is provided in the housing.
  3. An infusion needle structure of a drug infusion device of claim 2, characterized in that,
    the auxiliary fastener is arranged on the guide post or under the top of the needle holder, and the auxiliary fastener or the fastening portion includes a fastening hole, a fastening block, a fastening slot, or a fastening hook.
  4. An infusion needle structure of a drug infusion device of claim 3, characterized in that,
    the mode for forcing to release and reset the needle holder includes a pop-up mode or a pushing mode.
  5. An infusion needle structure of a drug infusion device of claim 4, characterized in that,
    it further includes a spring, arranged in the guide chamber, which is compressed by the needle holder when the needle holder is in the working position.
  6. An infusion needle structure of a drug infusion device of claim 5, characterized in that,
    the fastening portion and the auxiliary fastener are fastened with each other directly, when being unlocked, the end of the fastening portion is pushed by the unlock rod to move a certain distance to release the auxiliary fastener fastened by the fastening portion, and the spring exerts a resilient force toward the needle holder.
  7. An infusion needle structure of a drug infusion device of claim 4, characterized in that,
    it further includes a locking lever, the auxiliary fastener is a fastening hole or a fastening slot, the first end of the locking lever is movably arranged inside the auxiliary fastener while the second end is fastened by the fastening portion, the fulcrum of the locking lever is arranged between the two ends of the locking lever, and the second end is pushed by the unlock rod to move a certain distance to release the locking lever and the needle holder.
  8. An infusion needle structure of a drug infusion device of claim 2, characterized in that,
    it further includes a limit component, arranged on the housing, which is used to limit the position of the  needle holder when the needle holder is in the non-working position.
  9. An infusion needle structure of a drug infusion device of claim 8, characterized in that,
    the unlock rod is arranged on the limit component.
  10. An infusion needle structure of a drug infusion device of claim 8, characterized in that,
    the side surface of the guide post is provided with convexes or concaves while the limit component is provided with a fastening cantilever which is used to cooperate with the convexes or concaves to limit the position of the needle holder.
  11. An infusion needle structure of a drug infusion device of claim 2, characterized in that,
    the opening of the unlock hole is provided on the top of the needle holder or the housing, or on the side wall of the housing.
  12. An infusion needle structure of a drug infusion device of claim 11, characterized in that,
    the opening of the unlock hole is provided on the top of the needle holder, and the longitudinal directions of the unlock hole and the guide post are parallel to each other.
PCT/CN2020/125031 2019-05-17 2020-10-30 Infusion needle structure of drug infusion device Ceased WO2022052248A1 (en)

Priority Applications (22)

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US18/022,756 US12508362B2 (en) 2020-09-08 2020-10-30 Infusion needle structure of drug infusion device
EP20953033.6A EP4210792A4 (en) 2020-09-08 2020-10-30 INFUSION NEEDLE STRUCTURE OF A DRUG INFUSION DEVICE
US18/033,359 US20230398287A1 (en) 2020-10-30 2021-01-05 Patch-type drug infusion device
EP21884245.8A EP4237039A4 (en) 2020-10-30 2021-01-05 PATCH TYPE DRUG INFUSION DEVICE
US18/033,076 US20230390488A1 (en) 2020-10-30 2021-01-05 Patch-type drug infusion device
CN202110008706.2A CN114432538B (en) 2020-10-30 2021-01-05 Patch drug infusion device
CN202110007433.XA CN114432535B (en) 2020-10-30 2021-01-05 Patch type medicine infusion device
CN202110008701.XA CN114432537B (en) 2020-10-30 2021-01-05 Patch type medicine infusion device
EP21884244.1A EP4237042A4 (en) 2020-10-30 2021-01-05 PATCH-TYPE DRUG INFUSION DEVICE
EP21884246.6A EP4237040A4 (en) 2020-10-30 2021-01-05 A patch-type drug infusion device
US18/034,066 US20230405221A1 (en) 2020-10-30 2021-01-05 Patch-type drug infusion device
PCT/CN2021/070207 WO2022088498A1 (en) 2020-10-30 2021-01-05 A patch-type drug infusion device
PCT/CN2021/070209 WO2022088500A1 (en) 2020-10-30 2021-01-05 A patch-type drug infusion device
EP21884247.4A EP4237041A4 (en) 2020-10-30 2021-01-05 A compact patch-type drug infusion device
PCT/CN2021/070208 WO2022088499A1 (en) 2020-10-30 2021-01-05 A patch-type drug infusion device
US18/032,808 US20230390487A1 (en) 2020-10-30 2021-01-05 Compact patch-type drug infusion device
CN202110007418.5A CN114432534A (en) 2020-10-30 2021-01-05 Miniature patch type drug infusion device
PCT/CN2021/070211 WO2022088501A1 (en) 2020-10-30 2021-01-05 A compact patch-type drug infusion device
PCT/CN2021/102333 WO2022052574A1 (en) 2020-09-08 2021-06-25 Needle mechanism module for drug infusion device
US18/022,755 US20230320627A1 (en) 2020-09-08 2021-06-25 Needle mechanism module for drug infusion device
EP21865630.4A EP4210784A4 (en) 2020-09-08 2021-06-25 Needle mechanism module for drug infusion device
CN202110710430.2A CN114146253B (en) 2020-09-08 2021-06-25 Infusion needle structure of drug infusion device

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PCT/CN2019/087342 WO2020232565A1 (en) 2019-05-17 2019-05-17 Drug infusion device
CNPCT/CN2020/113980 2020-09-08
PCT/CN2020/113980 WO2021135359A1 (en) 2019-05-17 2020-09-08 Unilateral-driven patch-type drug infusion device

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PCT/CN2019/130442 Ceased WO2020233128A1 (en) 2019-05-17 2019-12-31 Miniature patch-type intelligent control infusion device
PCT/CN2020/103376 Ceased WO2021135173A1 (en) 2019-05-17 2020-07-22 High reliability drug infusion device
PCT/CN2020/113980 Ceased WO2021135359A1 (en) 2019-05-17 2020-09-08 Unilateral-driven patch-type drug infusion device
PCT/CN2020/115206 Ceased WO2021227321A1 (en) 2019-05-17 2020-09-15 Unidirectional-driven drug infusion device
PCT/CN2020/125031 Ceased WO2022052248A1 (en) 2019-05-17 2020-10-30 Infusion needle structure of drug infusion device
PCT/CN2021/102327 Ceased WO2022052573A1 (en) 2019-05-17 2021-06-25 Needle mechanism moudule for drug infusion device
PCT/CN2021/106456 Ceased WO2022052621A1 (en) 2019-05-17 2021-07-15 Unilaterally driven drug infusion device

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PCT/CN2020/103376 Ceased WO2021135173A1 (en) 2019-05-17 2020-07-22 High reliability drug infusion device
PCT/CN2020/113980 Ceased WO2021135359A1 (en) 2019-05-17 2020-09-08 Unilateral-driven patch-type drug infusion device
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Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12403247B2 (en) * 2019-05-17 2025-09-02 Medtrum Technologies Inc. Drug infusion device
US11458292B2 (en) 2019-05-20 2022-10-04 Unomedical A/S Rotatable infusion device and methods thereof
US20220218895A1 (en) * 2019-08-01 2022-07-14 Medtrum Technologies Inc. Driving apparatus and drug infusion device
WO2021146902A1 (en) * 2020-01-21 2021-07-29 Medtrum Technologies Inc. Medical device with safety verification and safety verification method thereof
CN114558198B (en) * 2020-11-27 2024-07-02 上海移宇科技股份有限公司 Driving structure of drug infusion device
US20240009385A1 (en) * 2020-11-27 2024-01-11 Medtrum Technologies Inc. Driving structure of a drug infusion device
US20230330333A1 (en) * 2020-11-27 2023-10-19 Medtrum Technologies Inc. Driving structure of a drug infusion device
US20240115800A1 (en) * 2021-01-05 2024-04-11 Medtrum Technologies Inc. Drug infusion device with security base
US20240115799A1 (en) * 2021-01-05 2024-04-11 Medtrum Technologies Inc. Skin patch drug infusion device
US20240050649A1 (en) * 2021-01-05 2024-02-15 Medtrum Technologies Inc. Skin patch drug infusion device
CN117177785A (en) 2021-04-23 2023-12-05 优诺医疗有限公司 Small patch pump system
CN115887813B (en) * 2021-08-06 2025-03-14 上海移宇科技有限公司 Drug infusion device without half-press
EP4398956A4 (en) * 2021-09-10 2025-01-08 Medtrum Technologies Inc. LOCKING DRUG INFUSION DEVICE AND ITS ARTIFICIAL PANCREAS
US20230372632A1 (en) * 2022-05-22 2023-11-23 Altek Biotechnology Corporation Driving mechanism for driving a plunger of an auto-injector to slide relative to a reservoir of the auto-injector and auto-injector therewith
CN117618711A (en) * 2022-08-11 2024-03-01 无锡顶点医疗器械有限公司 An automatic infusion device
CN115252304A (en) * 2022-08-11 2022-11-01 南京市江宁医院 A medical infusion oxygen delivery device
CN117224776A (en) * 2023-10-30 2023-12-15 深圳中科生物医疗电子有限公司 Gear type micro syringe pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030236498A1 (en) * 1998-03-23 2003-12-25 Joseph Gross Device for measuring volume of drug
CN1863564A (en) * 2003-08-12 2006-11-15 贝克顿·迪金森公司 Tablet Infusion Set
US20070049865A1 (en) * 2003-08-01 2007-03-01 Novo Nordisk A/S Retraction means for transcutaneous device
US20100152666A1 (en) * 2008-06-26 2010-06-17 Calibra Medical, Inc. Disposable infusion device with automatically releasable cannula driver
CN106110445A (en) * 2016-08-12 2016-11-16 上海移宇科技股份有限公司 A kind of infusion system of portable medication infusion device
EP3598942A1 (en) * 2018-07-27 2020-01-29 Bionime Corporation Elastic physiological patch
WO2020068623A1 (en) * 2018-09-24 2020-04-02 Amgen Inc. Interventional dosing systems and methods

Family Cites Families (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2270804A (en) * 1940-07-18 1942-01-20 Samson R Dutky Microinjector
NL6904268A (en) * 1969-03-20 1970-09-22
DE1945015A1 (en) * 1969-09-05 1971-03-11 Kurt Dr Sauerwein Device for medical treatment with radiation from radioactive substances
US4562751A (en) * 1984-01-06 1986-01-07 Nason Clyde K Solenoid drive apparatus for an external infusion pump
US4602700A (en) * 1984-06-15 1986-07-29 Daltex Medical Sciences, Inc. Fail-safe mechanical drive for syringe
NL9101489A (en) * 1991-09-03 1993-04-01 Texas Instruments Holland INJECTOR FOR IMMEDIATELY IMPLANTING AN OBJECT IN A LIVING BEING.
DE4133402C1 (en) * 1991-10-09 1993-01-07 B. Braun Melsungen Ag, 3508 Melsungen, De Medical pressure infusion appts. - has slidable holder pressing out syringe held in holder fixed to housing with selective motor or manual drive
CN2402333Y (en) * 1999-12-24 2000-10-25 王秀琪 Open-loop continuous insulin subcutaneous transfusion device
US6554800B1 (en) * 2000-08-09 2003-04-29 Medtronic Minimed, Inc. Compact pump motor system and dispensing process
JP3931060B2 (en) * 2001-08-08 2007-06-13 Ｎｔｎ株式会社 Syringe pump lead screw and syringe pump
GB0201689D0 (en) * 2002-01-25 2002-03-13 Dca Design Consultants Ltd Improvements in and relating to a medicament injection device
US20050238507A1 (en) * 2002-04-23 2005-10-27 Insulet Corporation Fluid delivery device
US6656159B2 (en) * 2002-04-23 2003-12-02 Insulet Corporation Dispenser for patient infusion device
US20040153032A1 (en) * 2002-04-23 2004-08-05 Garribotto John T. Dispenser for patient infusion device
US6656158B2 (en) * 2002-04-23 2003-12-02 Insulet Corporation Dispenser for patient infusion device
AU2003245872A1 (en) * 2002-07-24 2004-02-09 M 2 Medical A/S An infusion pump system, an infusion pump unit and an infusion pump
DE10240165A1 (en) * 2002-08-30 2004-03-18 Disetronic Licensing Ag Dispensing unit for use in infusion pumps comprises reservoir for infusion liquid fitted with spring-loaded piston, toothed wheel cooperating with locking bar to prevent piston moving
US7144384B2 (en) * 2002-09-30 2006-12-05 Insulet Corporation Dispenser components and methods for patient infusion device
AU2003269844A1 (en) * 2002-10-07 2004-04-23 Novo Nordisk A/S Needle device comprising a plurality of needles
AU2003279237A1 (en) * 2002-10-09 2004-05-04 Therasense, Inc. Fluid delivery device, system and method
DE60319142T2 (en) * 2002-12-23 2009-02-05 M2 Medical A/S Medical device for the delivery of insulin
US7682358B2 (en) * 2003-10-30 2010-03-23 Medtronic, Inc. Steerable catheter
US7731691B2 (en) * 2003-11-10 2010-06-08 Smiths Medical Asd, Inc. Subcutaneous infusion device and device for insertion of a cannula of an infusion device and method
US7670315B2 (en) * 2005-01-21 2010-03-02 Medrad, Inc. Injectors, injector systems and methods for injecting fluids
JP2008528087A (en) * 2005-01-24 2008-07-31 ノボ・ノルデイスク・エー／エス Skin puncture device assembly
CN101208515A (en) * 2005-03-28 2008-06-25 因苏雷特公司 Fluid Transfer Equipment
CA2597024A1 (en) * 2005-03-28 2006-10-05 Insulet Corporation Fluid delivery device
EP1877115A1 (en) * 2005-04-06 2008-01-16 M 2 Medical A/S An actuator
US7534226B2 (en) * 2005-09-26 2009-05-19 M2 Group Holdings, Inc. Dispensing fluid from an infusion pump system
US7736338B2 (en) * 2006-08-23 2010-06-15 Medtronic Minimed, Inc. Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
CA2682328A1 (en) * 2007-05-30 2008-12-11 Eli Lilly And Company Cartridge with multiple injection needles for a medication injection device
EP2228085A1 (en) 2007-08-20 2010-09-15 Mallinckrodt Inc. Fluid driven medical injectors
JP2010538751A (en) * 2007-09-17 2010-12-16 アイシーユー・メディカル・インコーポレーテッド Insertion device for injection device
CN101138659A (en) * 2007-09-27 2008-03-12 无锡顶点医疗器械有限公司 Insulin pump
WO2009044401A2 (en) * 2007-10-02 2009-04-09 Yossi Gross External drug pump
US7922695B2 (en) * 2007-10-18 2011-04-12 Roche Diagnostics Operations, Inc. Drug delivery pump drive using linear piezoelectric motor
US7862534B2 (en) * 2008-06-11 2011-01-04 Bracco Diagnostics Inc. Infusion circuit subassemblies
EP2165722A1 (en) 2008-09-19 2010-03-24 F.Hoffmann-La Roche Ag Device for feeding a product in a medical or pharmaceutical application
CN104474606B (en) * 2009-10-13 2017-04-26 瓦莱里塔斯公司 Fluid delivery device
DK2506914T3 (en) * 2009-11-30 2018-12-10 Hoffmann La Roche ANALYSIS MONITORING AND FLUID SUBMISSION SYSTEM
CN201701000U (en) * 2010-03-08 2011-01-12 九阳股份有限公司 Safety electric cooker
MX2012011085A (en) * 2010-03-30 2012-10-10 Unomedical As Medical device.
JP5471890B2 (en) * 2010-06-28 2014-04-16 住友電装株式会社 Charging connector
US20130211370A1 (en) 2010-10-25 2013-08-15 Sanofi-Aventis Deutschland Gmbh Medicine Delivery Device
US8535268B2 (en) * 2010-12-22 2013-09-17 Alcon Research, Ltd. Device for at least one of injection or aspiration
CN102600526B (en) 2012-03-09 2013-10-16 北京化工大学 Intelligent micropump for switching between insulin infusion and glucagon infusion
US9463280B2 (en) * 2012-03-26 2016-10-11 Medimop Medical Projects Ltd. Motion activated septum puncturing drug delivery device
EP2650031A1 (en) * 2012-04-11 2013-10-16 PharmaSens AG Manual pressure activated application mechanism
SG11201406452QA (en) * 2012-04-13 2014-11-27 Becton Dickinson Co Microinfuser with automatic needle retraction
CN202958118U (en) * 2012-12-17 2013-06-05 莱恩农业装备有限公司 Full-hydraulic drive two-dimensional horizontally-moving lifting type farm-oriented car frame
KR20140110496A (en) * 2013-03-08 2014-09-17 삼성전자주식회사 Drug infusion pump
US10080839B2 (en) * 2013-03-14 2018-09-25 Becton, Dickinson And Company Angled inserter for drug infusion
US20140276413A1 (en) * 2013-03-15 2014-09-18 Jeff Baker Medicament delivery and simulation system with a removable disposable container for medicament and a rotatable actuation component
US20140303559A1 (en) * 2013-04-05 2014-10-09 William Marsh Rice University Automatic syringe pumps for drug and fluid delivery
US10201662B2 (en) * 2013-04-10 2019-02-12 Sanofi Injection device and assembly method
US20140378903A1 (en) * 2013-06-21 2014-12-25 Animas Corporation Manually actuated infusion device and dose counter
CN103948980B (en) * 2014-04-04 2017-02-15 赵立生 Novel infusion apparatus
JP6976683B2 (en) 2014-04-14 2021-12-08 江▲蘇▼多▲維▼科技有限公司Multidimension Technology Co., Ltd. Small lead screw pump using magnetic resistance sensor and its manufacturing method
WO2015164653A1 (en) * 2014-04-24 2015-10-29 Becton, Dickinson And Company Catheter insertion device and method of inserting a catheter
US9731067B2 (en) * 2014-11-25 2017-08-15 Medtronic Minimed, Inc. Mechanical injection pump and method of use
JP2017536959A (en) * 2014-12-08 2017-12-14 サノフイ Drug delivery device
WO2016100781A1 (en) * 2014-12-19 2016-06-23 Amgen Inc. Drug delivery device with proximity sensor
EP3268065B1 (en) * 2015-03-09 2023-05-03 Amgen Inc. Drive mechanisms for drug delivery pumps
CN106267463A (en) * 2015-05-25 2017-01-04 美敦力公司 Portable fluid infusion apparatus and manufacture method thereof including actuating device
US9993594B2 (en) * 2015-06-22 2018-06-12 Medtronic Minimed, Inc. Occlusion detection techniques for a fluid infusion device having a rotary pump mechanism and rotor position sensors
CN108136124B (en) * 2015-10-05 2022-09-06 费森尤斯维尔公司 Infusion device for administering a medical fluid to a patient and method for operating an infusion device
CN105343965B (en) * 2015-10-28 2019-11-15 利辛县众善医药科技有限公司 Infusion alarm system for infusion bag infusion model
CN205163805U (en) * 2015-12-01 2016-04-20 北京大学第一医院 Portable infusion device
WO2017134966A1 (en) * 2016-02-04 2017-08-10 テルモ株式会社 Puncture device and method for retaining cannula
CN105680337B (en) * 2016-04-15 2017-11-21 泉州市大西洋电力科技有限公司 The emergency unlocking mechanism at high-voltage complete switch equipment back door
US11097048B2 (en) 2016-04-18 2021-08-24 Medtrum Technologies Inc. Unilateral driving mechanism for a portable infusion system
TWI746569B (en) * 2016-06-08 2021-11-21 瑞士商瑞健醫療股份有限公司 Dosiergerat, injektionsvorrichtung und verwendung
WO2018022432A1 (en) * 2016-07-27 2018-02-01 Becton, Dickinson And Company Infusion bump capture needle shield
CN109562221B (en) * 2016-08-02 2021-09-17 赛诺菲-安万特德国有限公司 Medicament delivery device
CN106139311A (en) * 2016-08-12 2016-11-23 上海移宇科技股份有限公司 A kind of drug-supplying system comprising position detection unit
CN110248686B (en) * 2016-09-27 2022-04-29 赛诺菲-安万特德国有限公司 drug delivery device
US10780217B2 (en) * 2016-11-10 2020-09-22 Insulet Corporation Ratchet drive for on body delivery system
CN108331731B (en) * 2017-01-19 2020-08-21 达尔生技股份有限公司 Fluid delivery device
CN207627685U (en) * 2017-06-05 2018-07-20 丁平 Fine-tuning Automatic-backing type helps note rifle
RU2765171C2 (en) * 2017-07-07 2022-01-26 Нейродерм Лтд Apparatus for subcutaneous delivery of a fluid medicinal product
CN107456625B (en) * 2017-09-12 2018-08-14 美敦力公司 Fluid infusion apparatus and its drive system
CN207199865U (en) * 2017-09-21 2018-04-06 深圳传音制造有限公司 Electronic card latch-up structure and terminal device
WO2019079181A1 (en) * 2017-10-16 2019-04-25 Becton, Dickinson And Company End-of-dose detection for drug delivery system
CN208049137U (en) * 2017-11-17 2018-11-06 金华芘丽芙美容医院股份有限公司 A kind of roller type medical filling gun
CN108295335A (en) * 2018-01-26 2018-07-20 美敦力公司 Sticking type fluid infusion apparatus and infusion needle protector
CN110115784A (en) * 2018-02-05 2019-08-13 郑州瑞宇科技有限公司 A kind of insulin pump extrusion infusing pipeline
CN108273153B (en) * 2018-03-14 2024-04-05 深圳中科光电医疗电子有限公司 Self-destruction type precise transfusion device
CN108295338B (en) * 2018-03-15 2020-07-03 青岛市第三人民医院 Be applied to infusion pump's multistage flow control device
CN109172934A (en) * 2018-08-23 2019-01-11 苏州新生命医疗科技有限公司 A kind of driving structure and drug infusion system of compact drug infusion system
CN108939203B (en) * 2018-08-23 2024-09-03 苏州新生命医疗科技有限公司 Driving structure of drug infusion system and high-precision drug infusion system
KR20190026730A (en) * 2019-03-07 2019-03-13 이오플로우(주) Apparatus for Infusing medical liquid
US12403247B2 (en) * 2019-05-17 2025-09-02 Medtrum Technologies Inc. Drug infusion device
WO2021012075A1 (en) * 2019-07-19 2021-01-28 Medtrum Technologies Inc. Integrated drug infusion device
CN112237660B (en) * 2019-07-19 2022-08-16 上海移宇科技股份有限公司 Single-side driving drug infusion device
US20220218895A1 (en) * 2019-08-01 2022-07-14 Medtrum Technologies Inc. Driving apparatus and drug infusion device
CN110974477B (en) * 2019-11-22 2022-10-28 张珂孟 Injection device that animal husbandry used

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030236498A1 (en) * 1998-03-23 2003-12-25 Joseph Gross Device for measuring volume of drug
US20070049865A1 (en) * 2003-08-01 2007-03-01 Novo Nordisk A/S Retraction means for transcutaneous device
CN1863564A (en) * 2003-08-12 2006-11-15 贝克顿·迪金森公司 Tablet Infusion Set
US20100152666A1 (en) * 2008-06-26 2010-06-17 Calibra Medical, Inc. Disposable infusion device with automatically releasable cannula driver
CN106110445A (en) * 2016-08-12 2016-11-16 上海移宇科技股份有限公司 A kind of infusion system of portable medication infusion device
EP3598942A1 (en) * 2018-07-27 2020-01-29 Bionime Corporation Elastic physiological patch
WO2020068623A1 (en) * 2018-09-24 2020-04-02 Amgen Inc. Interventional dosing systems and methods

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