WO2025202000A1 - Lancette de sécurité - Google Patents

Lancette de sécurité

Info

Publication number
WO2025202000A1
WO2025202000A1 PCT/EP2025/057571 EP2025057571W WO2025202000A1 WO 2025202000 A1 WO2025202000 A1 WO 2025202000A1 EP 2025057571 W EP2025057571 W EP 2025057571W WO 2025202000 A1 WO2025202000 A1 WO 2025202000A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
penetration
activator
force
contact
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.)
Pending
Application number
PCT/EP2025/057571
Other languages
English (en)
Inventor
Göran EWERLÖF
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.)
Wagewe Innovation AB
Original Assignee
Wagewe Innovation AB
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 Wagewe Innovation AB filed Critical Wagewe Innovation AB
Publication of WO2025202000A1 publication Critical patent/WO2025202000A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150274—Manufacture or production processes or steps for blood sampling devices
    • A61B5/15029—Manufacture or production processes or steps for blood sampling devices for driving devices, i.e. means for driving the piercing element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/14—Devices for taking samples of blood ; Measuring characteristics of blood in vivo, e.g. gas concentration within the blood, pH-value of blood
    • A61B5/1405—Devices for taking blood samples
    • A61B5/1411—Devices for taking blood samples by percutaneous method, e.g. by lancet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/150022—Source of blood for capillary blood or interstitial fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150442—Blade-like piercing elements, e.g. blades, cutters, knives, for cutting the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150694—Procedure for removing protection means at the time of piercing
    • A61B5/150717—Procedure for removing protection means at the time of piercing manually removed
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15103—Piercing procedure
    • A61B5/15105—Purely manual piercing, i.e. the user pierces the skin without the assistance of any driving means or driving devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15103—Piercing procedure
    • A61B5/15107—Piercing being assisted by a triggering mechanism
    • A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
    • A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15126—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides
    • A61B5/1513—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides comprising linear sliding guides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15142—Devices intended for single use, i.e. disposable
    • A61B5/15144—Devices intended for single use, i.e. disposable comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15126—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15142—Devices intended for single use, i.e. disposable

Definitions

  • Lancets are widely used when blood samples are to be collected from patients, wherein the tip of a finger is punctured or penetrated by a penetration element and drops of blood are collected.
  • safety lancets In order to minimize the risk of contamination from blood on the pointed tip of the lancet, so called safety lancets have been developed and have become standard in todays health care.
  • the safety lancets are provided with different types of mechanisms that retract the needle into a body of the safety lancet after completed penetration. Thus, the needle is hidden after use, minimizing the risk of accidental needle sticks. The safety lancet is then discarded in a safety box or sharps container. Moreover, the mechanisms of the safety lancet are often designed so that the needle is rapidly pushed into penetration when the safety lancet is activated, which reduces the pain experienced by the patient. Many of the safety lancets on the market are provided with mechanisms comprising metal springs that provide the penetration force.
  • metal springs are used alone provide the force on the needle and when choosing the spring force, there is a balance between enough puncturing force for varying skin thicknesses and not excessive force that may cause discomfort to the patient or different penetration depths due to this.
  • the use of metal springs increases the manufacturing cost as well as increased recycling costs.
  • the aim of the present application is to improve the design and functionality of a safety lancet. This aim is obtained by a safety lancet according to the features of the independent patent claim. Preferable embodiments of the safety lancet form the subject of the dependent patent claims.
  • a safety lancet comprising a lancet body provided with a support surface to be in contact with a penetration site when in use, wherein the support surface is arranged with a passage, a hinge mechanism arranged to the lancet body, a carrier comprising a penetration element and connected to the hinge mechanism and being linearly movable along a first axis between a first position with the penetration element inside the lancet body and a second position with the penetration element protruding through the passage, an elongated flexible actuator connected with one end to the lancet body extending in a proximal direction and with a free end resting on a flexible force element positioned adjacent the hinge mechanism in the first position, and an activator operably connected to the actuator, which activator is manually movable in a direction along a second axis generally perpendicular to the first axis.
  • a manual movement of the activator in the direction of the second axis will cause the free end of the flexible actuator to move along the force element and to bias the force element such that the actuator is pushed in the distal direction, building up a force in the actuator, until the manual movement of the activator will push the free end of the actuator off the force element, wherein the free end of the actuator will hit the hinge mechanism and, by the force of the actuator, move the carrier and the penetration element rapidly in a proximal direction to the second position and perform a penetration.
  • the hinge mechanism may be biased in a distal direction in the first position and wherein further manual movement of the activator may move the actuator out of contact with the hinge mechanism, in turn causing the carrier and penetration element to move back to the first position.
  • the penetration element is quickly retracted after the penetration due to the biasing properties of the hinge mechanism and that the actuator releases the hinge mechanism very shortly after the penetration.
  • the retraction of the carrier and the penetration element into the safety lancet body reduces the risk of accidental contact with the penetration element and thus reduced risk of blood contamination.
  • the lancet body may further comprise a guide surface generally parallel with the first axis, and wherein a side surface of the carrier may be moved in contact with the guide surface for guiding the carrier along the first axis during penetration.
  • the safety lancet may further comprise a first locking element arranged on the actuator and a second locking element arranged on the lancet body, cooperating to lock the actuator after the actuator has been moved out of contact with the hinge mechanism.
  • the activator or the actuator may further comprise a support element, which support element may be arranged to be in contact with the actuator or the activator during the movement and bending of the actuator.
  • the support element may comprise an arc-shaped contact surface.
  • Fig. 1 is a perspective view of a first embodiment of a safety lancet
  • Figs. 2-5 are side views of the safety lancet of Fig. 1 in different operational positions
  • Figs. 6-7 are side views of a second embodiment of a safety lancet
  • Figs. 8-9 are side views of a third embodiment of a safety lancet
  • Figs 10-11 are side views of a fourth embodiment of a safety lancet
  • Figs. 12-15 are perspective views of a fifth embodiment of a safety lancet.
  • Fig. 16 is a detailed view taken from Fig. 14.
  • the word proximal means at or towards a penetration site of a patient or user, while the word distal is the opposite direction.
  • the word upper relates to an orientation of the safety lancet when in normal use, while the word lower is the opposite orientation.
  • the word outer relates to an outside of the safety lancet and the word inner relates to the interior of the safety lancet.
  • a safety lancet 10 shown in the drawings comprises a lancet body 12.
  • the lancet body 12 comprises a proximal contact element 14 having an arc-shaped contact surface.
  • a central passage 16 is provided in the contact element 14.
  • a first wall or portion 18 extending in the distal direction.
  • An upper and outer area of the first portion 18 is provided with grip-enhancing elements 20, like ribs as shown in the drawings.
  • the first portion 18 transforms into an upper, generally arc-shaped portion 22.
  • a material reduction 24 is arranged, providing a living hinge as will be explained below.
  • the upper portion 22 then transforms into a second wall portion 26 extending in the proximal direction with a free end, which is provided with an outwardly extending protrusion or tongue 27, which will function as a first locking element as will be described.
  • the second portion 26 will hereafter be referred to as activator.
  • An outer area of the activator 26 is also provided with grip-enhancing elements 28.
  • a third portion 30 is extending distally, towards the activator 26.
  • the portions 18, 26 described above have a width that provides a good grip and handling of the safety lancet as seen in Fig. 1.
  • the hinge mechanism 32 comprises a first hinge section 34 in the form of an arm extending from an inner surface of the third portion 30 distally and inclined in relation to a first axis X1 , which axis extends proximally-distally.
  • the first hinge section 34 may have a material reduction 36 at the connection with the third portion 30, providing a living hinge function.
  • a second hinge section 38 is provided, extending proximally and also inclined in relation to the first axis X1 .
  • the first hinge section 34 extends somewhat further inwards, creating a first locking protrusion 39, as will be described below.
  • a carrier 40 is provided to the free end of the second hinge section 38.
  • the carrier 40 in turn is provided with a penetration element 42, Fig. 3, such as a pointed needle as shown, or a blade, extending proximally from the carrier 40 and provided with a pointed end.
  • a penetration element 42 is covered and kept sterile by a shield 43.
  • the carrier 40 is provided with a straight side surface 44 with an orientation generally coinciding with the direction of the first axis X1 .
  • an inner area of the third portion 30 adjacent the carrier 40 is also provided with a straight guide surface 46 with the same orientation.
  • the safety lancet is intended to be used as follows. When delivered to a user, be it a patient or medical staff, the orientation and position of the above described components are as shown in Fig. 2. At delivery, the penetration element 42 is protected by the shield 43, providing sterility to the penetration element 42 before use. When the safety device is to be used, the shield 43 is removed, Fig. 3, and the contact element 14 is placed against a penetration site, preferably the tip of a finger, where the user holds the safety lancet 10 at the upper areas provided with the grip enhancing elements 20 and 28. Due to the arc-shape of the contact surface of the contact element 14, a correct penetration position is obtained.
  • Further movement will cause the free end 52 of the actuator 50 to move inwards along the distal surface of the force element 48, Fig. 3, which in turn will bias proximally and create a bending force in the force element 48.
  • This bending force will act on the actuator 50 and force it to move distally, aided by the living hinge 24 between the first portion 18 and the upper portion 22. Moreover, this will also cause the build-up of a bending force in the actuator 50, in particular from the support element 54.
  • forces are built up in the actuator 50 of the safety lancet 10. Further movement will now cause the free end 52 of the actuator 50 to suddenly leave the force element 48, releasing the actuator 50. Because of the forces built up, the actuator 50 with its free end 52 will rapidly move in the proximal direction and hit the first hinge section 34, Fig. 4, which in turn will cause the hinge mechanism 32 to move the carrier 40 rapidly proximally and cause a penetration by the tip of the penetration element 42.
  • the side surface 44 of the carrier 40 and the guide surface 46 of the third portion 30 will guide the carrier 40 in a straight proximal direction during the penetration, ascertaining a correct penetration direction of the penetration element 42 along the first axis X1 . Further, due to the actuator 50 acting on the hinge mechanism in a cam-like manner as seen in Fig. 4, a precise and consistent penetration depth is obtained regardless of thickness of the patient’s skin at the penetration site.
  • the actuator 50 As the actuator 50 is moved further inwards during the operation, its free 52 end will be moved out of contact with the first hinge section 34 of the hinge mechanism 32, Fig. 5, and due to it biasing properties in the distal direction, the carrier with 40 its penetration element 42 will be moved distally away from the penetration site and into the safety lancet, preventing any accidental contact and possible injury when the safety lancet is removed.
  • the tongue 27 of the activator 26 will pass the free end of the force element 48 and when the grip of a user is released, the activator 26 will be biased outwardly whereby the tongue 27 will be positioned proximally of the force element 48, which now functions as a second locking element.
  • the activator 26 is thereby locked in the transversal direction along axis X2, as well as the actuator 50, which is locked between the support element 54 and the inner wall of the first portion 18, as seen in Fig. 5. Further, the second locking protrusion 52 now engages with the first locking protrusion 39 to hold the carrier 40 in the retracted position. Thereby, no manipulation can be made in order to move the carrier 40 again, whereby the penetration element 42 is safe within the safety lancet.
  • the material thickness of the living hinge 24 between the first portion 18 and the upper portion 22, as well as the type of material may be chosen such that it will break if further attempts to manipulate the safety lancet are done after it has been used and is locked.
  • FIG. 6 and 7 Another embodiment of the safety lancet is shown in Figs. 6 and 7. Most of the components and their functions are the same as the previous embodiment and will not be discussed further. However, this embodiment is provided with a support element 60 provided on the actuator 50 positioned somewhat half way between the attachment end and the free end.
  • the support element 60 may be a protrusion or tongue extending towards an inner surface of the activator 26.
  • the actuator 50 may be provided with a first locking element 62 that is to cooperate with a second locking element 64 provided on an inner surface of the first portion 18.
  • the first and second locking elements 62, 64 are in the form of protruding tabs that can engage with each other.
  • the actuator 50 when the actuator 50 has been pressed inwards so that its free end has passed the hinge mechanism 32 and the carrier 40 and penetration element 42 are retracted as described above, Fig. 7, the first and second locking elements 62, 64 engage with each other to lock the actuator 50. Thereby, the actuator 50 cannot be moved or forced back to act on the hinge mechanism 32 after completed operation.
  • the living hinge 24 between the first portion 18 and the upper portion 22 may be designed such that any further manipulation of the safety lancet will cause the living hinge 24 to break, rendering the safety lancet useless for further use.
  • FIG. 8 A third embodiment is shown in Figs. 8 and 9. Most of the components and their functions are the same as the previous embodiment and will not be discussed further. However, this embodiment has no support element but is provided with an activator 26 with a lower part angled outwardly so as to form a distinct inwardly directed contact point 70. When the activator 26 is operated as described above, the contact point 70 will come in contact with the actuator 50 and cause a bending action as seen in Fig. 9.
  • the first portion 18 of the body 12 is arranged with an elongated rectangular passage 90.
  • Planar side surfaces 92 are arranged on each side of the passage as seen in Fig. 10.
  • two inwardly extending elements 94 are attached or integrated.
  • the free ends of the elements 94 are provided with laterally extending protrusions 96, where the protrusions are extending in opposite directions.
  • Each protrusion is provided with an inclined surface 97 and a planar surface 98, combined forming hooks 100.
  • the operation of the safety lancet 10 according to the fifth embodiment is very similar to the previous embodiments and will not be described again in detail.
  • the inclined surfaces 97 of the hooks 100 come in contact with side edges of the rectangular passage 90 and will flex so as to allow the protrusions 94 of the hooks 100 to pass through the passage 90.
  • the protrusions 94 have passed through the passage 90, they will flex back to the initial position whereby the planar surfaces 98 of the hooks 100 will rest against the planar side surfaces 92 on each side of the passage 90, Fig. 16.
  • the hooks 100 will not protrude above the outer surface of the first portion 18.
  • the hooks 1000 will thus lock the actuator 50 in this position, thereby preventing any manipulation of the safety lancet and thus increasing the safety of personnel handling the safety lancet after use. Since the hooks 100 do not protrude, it is difficult to try to manipulate and move them out of engagement.
  • the safety lancet according to the invention is preferably made in one piece of a plastic material such as for example POM.
  • the safety lancet is produced by injection moulding.
  • the needle may be held in one half of the cavity by a magnet if two cavities are used.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Hematology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Manufacturing & Machinery (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne une lancette de sécurité (10) comprenant un corps de lancette (12) pourvu d'un élément de contact (14) présentant une surface de contact destinée à être en contact avec un site de pénétration lors de l'utilisation, l'élément de contact (14) étant agencé avec un passage (16), un mécanisme de charnière (32) disposé sur le corps de lancette (12), un support (40) comprenant un élément de pénétration (42) et relié au mécanisme de charnière (32) et étant mobile linéairement le long d'un premier axe (X1) entre une première position où l'élément de pénétration est à l'intérieur du corps de lancette et une seconde position où l'élément de pénétration (42) fait saillie à travers le passage (16), un actionneur flexible allongé (50) relié par une extrémité au corps de lancette (12) s'étendant dans une direction proximale et pourvu d'une extrémité libre (52) reposant sur un élément de force flexible (48) positionné adjacent au mécanisme de charnière (32) dans la première position, un activateur (26) relié de manière fonctionnelle à l'actionneur (50), l'activateur (26) étant manuellement mobile dans une direction le long d'un second axe (X2) généralement perpendiculaire au premier axe (X1), un mouvement manuel de l'activateur (26) dans la direction du second axe (X2) amenant l'extrémité libre (52) de l'actionneur flexible (50) à se déplacer le long de l'élément de force (48) et à solliciter l'élément de force (48) de telle sorte que l'actionneur (50) est poussé dans la direction distale, construisant une force dans l'actionneur (50), jusqu'à ce que le mouvement manuel de l'activateur (26) pousse l'extrémité libre (52) de l'actionneur (50) hors de l'élément de force (48), l'extrémité libre (52) de l'actionneur (50) frappant alors le mécanisme de charnière (32) et, par la force de l'actionneur, déplaçant le support (40) et l'élément de pénétration (42) rapidement dans une direction proximale vers la seconde position et effectuant une pénétration.
PCT/EP2025/057571 2024-03-27 2025-03-20 Lancette de sécurité Pending WO2025202000A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2450339A SE548014C2 (en) 2024-03-27 2024-03-27 Safety lancet
SE2450339-3 2024-03-27

Publications (1)

Publication Number Publication Date
WO2025202000A1 true WO2025202000A1 (fr) 2025-10-02

Family

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Citations (4)

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US4539988A (en) * 1983-07-05 1985-09-10 Packaging Corporation International Disposable automatic lancet
US5133730A (en) * 1991-05-15 1992-07-28 International Technidyne Corporation Disposable-retractable finger stick device
US5397334A (en) * 1994-01-11 1995-03-14 Sherwood Medical Company Distal movement limiting assembly for finger stick device
US20130267814A1 (en) * 2007-03-30 2013-10-10 Stat Medical Devices, Inc. Lancet device with combined trigger and cocking mechanism

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US5395388A (en) * 1993-11-15 1995-03-07 Schraga; Steven Single unit lancet device
US5584846A (en) * 1995-10-27 1996-12-17 International Technidyne Corporation Low cost disposable lancet
KR20070004887A (ko) * 2004-04-26 2007-01-09 가부시끼가이샤아사히폴리슬라이더 인시젼을 형성하기 위한 란셋 장치
US20070233166A1 (en) * 2004-05-27 2007-10-04 Facet Technologies, Llc Low-Cost Lancing Device with Cantilevered Leaf Spring for Launch and Return
GB2421439B (en) * 2004-12-21 2009-07-29 Owen Mumford Ltd Skin pricking apparatus
WO2006110573A1 (fr) * 2005-04-07 2006-10-19 Becton, Dickinson And Company Lancette activee par declencheur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539988A (en) * 1983-07-05 1985-09-10 Packaging Corporation International Disposable automatic lancet
US5133730A (en) * 1991-05-15 1992-07-28 International Technidyne Corporation Disposable-retractable finger stick device
US5397334A (en) * 1994-01-11 1995-03-14 Sherwood Medical Company Distal movement limiting assembly for finger stick device
US20130267814A1 (en) * 2007-03-30 2013-10-10 Stat Medical Devices, Inc. Lancet device with combined trigger and cocking mechanism

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SE548014C2 (en) 2026-01-13

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