WO2024037554A1 - 导管泵 - Google Patents
导管泵 Download PDFInfo
- Publication number
- WO2024037554A1 WO2024037554A1 PCT/CN2023/113206 CN2023113206W WO2024037554A1 WO 2024037554 A1 WO2024037554 A1 WO 2024037554A1 CN 2023113206 W CN2023113206 W CN 2023113206W WO 2024037554 A1 WO2024037554 A1 WO 2024037554A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flushing
- catheter
- liquid
- flushing liquid
- pump
- 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
Links
Classifications
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/13—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/135—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel inside a blood vessel, e.g. using grafting
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/157—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel mechanically acting upon the inside of the patient's blood vessel structure, e.g. contractile structures placed inside a vessel
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
- A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
- A61M60/414—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/81—Pump housings
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/827—Sealings between moving parts
- A61M60/829—Sealings between moving parts having a purge fluid supply
-
- 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
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/3606—General characteristics of the apparatus related to heating or cooling cooled
-
- 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
- A61M2205/75—General characteristics of the apparatus with filters
Definitions
- This application relates to a catheter pump.
- Heart disease is a health problem with a high mortality rate, and doctors are increasingly using mechanical circulatory support systems to treat heart failure. Treatment of acute heart failure requires a device that can quickly support patients, and doctors want to be able to deploy treatments quickly and minimally invasively.
- MCS Mechanical circulatory support
- VAD ventricular assist devices
- MI myocardial infarction
- PCI percutaneous coronary intervention
- An example of an MCS system is a rotary catheter pump placed percutaneously through a catheter.
- a catheter pump is inserted into the body and connected to the cardiovascular system (for example, to the left ventricle and ascending aorta) to assist the heart's pumping function.
- cardiovascular system for example, to the left ventricle and ascending aorta
- Other known applications include pumping venous blood from the right ventricle to the pulmonary artery to support the right side of the heart.
- acute circulatory support devices are used to reduce the load on the myocardium over a period of time, to stabilize the patient prior to heart transplantation, or for ongoing support.
- the known embodiment with publication number CN113856036A provides a catheter pump that achieves a small intervention size, that is, using an external motor.
- the general working principle of the catheter pump is: the external motor transmits rotational power to the distal impeller through the drive shaft threaded in the catheter.
- the rotation of the impeller provides flow power to the blood and pumps the blood from the left ventricle to the aorta. .
- non-contact power transmission mechanisms including magnetic coupling solutions such as those provided by the announcement number CN101820933B and those provided by the publication number CN114452527A and the announcement number CN216061675U.
- Eddy current coupling solution A liquid isolation wall is set between the driving part and the driven part (in the magnetic coupling scheme, both are magnets. In the eddy current coupling scheme, they are magnets and conductors respectively) to achieve sealing against the flushing fluid. , so that the flushing fluid can only flow to the distal end, scouring the drive shaft and near-distal bearings without entering the motor.
- the driving part is driven to rotate by the motor
- the driven part is arranged on the rotor shaft and supported by the rotor shaft, and the rotor shaft is circumferentially fixedly connected to the proximal end of the driving shaft.
- the rotation of the motor is transmitted to the rotor shaft and further to the driving shaft and impeller.
- the rotor which includes a driven part and a rotor shaft, is provided in a drive conduit handle detachably connected to the motor.
- the rotor also includes a protective layer covering the driven part and an end cap that limits the driven part in the axial direction.
- the rotor shaft is rotatably supported in the drive tube handle via two bearings.
- the flushing fluid interface is located on the drive catheter handle. In this way, the flushing fluid first enters the handle of the driving catheter and then enters the catheter. Therefore, the rotor is immersed in the rinse fluid. Therefore, the flushing fluid also lubricates and cools the two bearings that support the rotor shaft.
- the torque of the non-contact power transmission mechanism is inversely related to the distance between the driving part and the driven part. This is especially evident in the eddy current coupling solution. Therefore, in order to increase the torque of power transmission, it is a feasible solution to compress the distance between the driving part and the driven part by increasing the diameter of the rotor.
- embodiments of the present invention provide a catheter pump to at least partially solve the above problems.
- the catheter pump includes a driving component, a working component, a cooling circulation module and a pressure maintenance module.
- the drive assembly includes a motor.
- the working component includes a catheter, a driving shaft passed through the catheter, a follower connected to the proximal end of the driving shaft, a driving catheter handle and a pump head respectively connected to the proximal and distal ends of the catheter.
- the pump head includes a pump casing connected to the distal end of the catheter and an impeller housed in the pump casing. The impeller is connected to the distal end of the drive shaft so as to be driven to rotate to pump blood.
- the drive catheter handle includes a coupling housing connected to the proximal end of the catheter and detachably connected to a motor, a rotor that can be driven by the motor, and the proximal end of the drive shaft is connected to the rotor.
- An accommodating cavity in which the rotor is rotatably supported is formed in the coupling casing.
- the coupling casing is provided with a flushing liquid inlet and a rinsing liquid outlet connected to the accommodating cavity, and the accommodating cavity is connected to the conduit.
- the flushing fluid inlet is connected to the flushing fluid source.
- the flushing fluid entering the accommodation cavity through the flushing fluid inlet is divided into two parts: the first part enters the conduit, and the second part passes through the flushing fluid through the rotor and is discharged from the flushing fluid outlet.
- the first part of the flushing fluid will eventually be discharged from the pump head to the human body. This also means that there is no reflux of the first part of the irrigation fluid entering through the catheter, but all of it enters the human body.
- the so-called reflux means that the irrigation fluid flows back from the distal end (roughly where the pump head is) to the proximal end (specifically where the handle of the drive catheter is) through the catheter or the drive shaft.
- the first part of the flushing fluid is mainly discharged from two locations at the distal end (pump head): the distal end of the catheter and the distal end of the drive shaft.
- the catheter pump includes a first flow path for supplying the flow of the first part of the flushing fluid.
- the first flow path is defined by the internal space of the flushing fluid inlet, accommodating cavity, catheter, pump head and other structures. Therefore, the flow path of the first part of the flushing fluid is from the flushing fluid inlet into the accommodation chamber, then from the accommodation chamber into the conduit, and finally outflows from the pump head.
- the catheter pump also includes a second flow path for supplying the flow of the second part of the flushing fluid.
- the second flow path is defined by the internal space of the flushing fluid inlet, the accommodation chamber, the flushing fluid outlet and other structures. Therefore, the flow path of the second part of the flushing fluid is from the flushing fluid inlet into the accommodation cavity, and then flows out from the flushing fluid outlet.
- the flushing fluid that finally enters the catheter is defined as the first part of the flushing fluid
- the flushing fluid that is finally discharged from the flushing fluid outlet is defined as the second part of the flushing fluid.
- the technical solution of the present disclosure enables the flushing liquid to be diverted within the driving catheter handle.
- the flushing liquid entering the first part of the catheter can lubricate and cool rotating parts such as the drive shaft and bearings while flowing to the position of the distal pump head.
- the second part of the flushing fluid flowing out from the flushing fluid outlet can take away the high temperature caused by the high speed of the rotor and avoid the high temperature of the flushing fluid.
- the cooling cycle module includes a flushing liquid inlet pipe connected with the flushing liquid inlet, and a flushing liquid outlet pipe connected with the flushing liquid outlet.
- the flushing liquid outlet pipe is connected with the flushing liquid inlet pipe.
- the flushing liquid outlet pipe, the flushing liquid inlet pipe, and the accommodation cavity form a cooling cycle. loop.
- the cooling circulation module also includes a circulation driving component provided on the cooling circulation loop to drive the flushing liquid to flow.
- the pressure maintenance module is connected to the cooling circulation circuit to maintain the flushing fluid pressure in the cooling circulation circuit to be greater than the environmental pressure of the pump head during operation.
- the pressure maintenance module maintains the flushing fluid pressure in the cooling circulation circuit to be greater than the environmental pressure of the pump head, so that the flushing fluid can enter the human body through the catheter. Since the high temperature of the flushing fluid is resolved, the flushing fluid entering the human body will not cause discomfort.
- the circulation driving component is a first pump located on the flushing liquid inlet pipe and/or the flushing liquid outlet pipe.
- part of the flushing fluid enters the conduit and part flows out from the flushing fluid outlet during the flow process. Furthermore, the amount of flushing fluid entering the catheter (the first portion of the flushing fluid) is less than the amount of the flushing fluid flowing out from the flushing fluid outlet (the second portion of the flushing fluid).
- amount can refer to either volume or flow rate. This article uses traffic as an explanation.
- the distribution of the above-mentioned liquid flow can be achieved by controlling the pressure maintenance module to maintain the flushing fluid pressure in the cooling circulation circuit to be greater than the environmental pressure of the pump head during the working process.
- the pressure maintenance module includes a flushing liquid source connected to the cooling circulation loop through a supplementary pipeline, and a second pump disposed on the supplementary pipeline to supplement flushing liquid provided by the flushing liquid source into the cooling circulation loop. In this way, the power required to circulate the flushing fluid and the pressure required to maintain the flushing fluid pressure are completed by the circulation driver and the second pump respectively.
- the first pump and the second pump respectively provide the power required for the flushing fluid circulation and the flushing fluid maintenance pressure, which can prevent the flushing fluid from entering the human body. Precise control of flow.
- the cooling cycle module also includes a buffer container.
- the flushing liquid inlet pipe, flushing liquid outlet pipe and supplementary pipeline are all connected to the buffer container through Luer heads.
- buffering in order to offset to a certain extent the flushing fluid pressure that may occur due to the expansion of the diameter of the flushing fluid inlet pipe and flushing fluid outlet tube when a hose is used, resulting in unstable (decreased) flushing fluid pressure, which ultimately leads to unstable flushing fluid flow into the human body, buffering
- the container must at least be able to withstand the pressure compensation of the pressure maintenance module without changing the volume. It is preferred to use a solid tank or a tee joint whose volume does not change.
- a bubble filter is provided on the cooling cycle to capture or filter the above-mentioned precipitated bubbles.
- the bubble filter is preferably located on the flushing fluid inlet pipe, which can basically prevent bubbles from entering the human body through the catheter.
- Figure 1 is a schematic three-dimensional structural diagram of a catheter pump according to an embodiment of the present invention.
- Figure 2 is a cross-sectional view of the front-end pump head part of the working assembly in Figure 1;
- Figure 3 is a cross-sectional view of the driving assembly and the driving catheter handle in a separated state
- Figure 4 is a schematic structural diagram of a high-temperature flushing solution solution corresponding to the third embodiment and the circulation driving member is a pump.
- proximal As used herein, the terms “proximal”, “posterior” and “distal”, “anterior” are relative to the clinician operating the catheter pump.
- the terms “near” and “posterior” refer to the part relatively close to the clinician, and the terms “distal” and “anterior” refer to the part relatively far away from the clinician.
- the driving components are at the proximal and rear ends, and the working components are at the far and front ends.
- the proximal end of a certain part/assembly represents the end relatively close to the driving component, and the far end represents the end relatively close to the working component.
- catheter pumps can be used in many orientations and positions, so these terms expressing relative positional relationships are not restrictive and absolute.
- the catheter pump according to the embodiment of the present invention can at least partially assist the pumping function of the heart and achieve the effect of at least partially reducing the burden on the heart.
- the catheter pump can be used as a left ventricular assist, and its working part (specifically referred to as the pump head below) can be inserted into the left ventricle.
- the pump head When the pump head is running, the blood in the left ventricle can be pumped. sent to the ascending aorta.
- the catheter pump can also be used as a right ventricular assist, and the pump head can be inserted into the right ventricle. When the pump head is running, blood in the veins is pumped into the right ventricle.
- the catheter pump 1000 includes a driving component 100 and a working component 200 .
- the driving assembly 100 includes a motor housing 101 , a motor 102 accommodated in the motor housing 101 , and an active member 103 driven by the motor 102 .
- the working assembly 200 includes a catheter 201 , a drive shaft 202 that passes through the catheter 201 , a follower 203 connected to the proximal end of the drive shaft 202 , and drives connected to the proximal and distal ends of the catheter 201 respectively.
- Catheter handle 204 and pump head 205 are examples of the catheter 201 .
- the pump head 205 includes a pump housing 2051 having an inlet 2051a and an outlet 2051b, an impeller 2052 received in the pump housing 2051, and the impeller 2052 is connected to the distal end of the drive shaft 202.
- the impeller 2052 rotates, blood is sucked into the pump housing 2051 from the inlet 2051a, and then pumped out of the pump housing 2051 through the outlet 2051b.
- the pump housing 2051 includes a bracket 20511 and an elastic coating 20512 covering the bracket 20511.
- the metal lattice of the bracket 20511 has a mesh design.
- the coating 20512 covers the middle and rear end portions of the bracket 20511.
- the mesh of the front end of the bracket 20511 that is not covered by the coating 20512 forms an entrance 2051a.
- the rear end of the coating 20512 is wrapped around the outside of the distal end of the catheter, and the outlet 2051b is an opening formed at the rear end of the coating 20512.
- the impeller 2052 includes a hub 20521 and blades 20522 supported on the outer wall of the hub 20521.
- the blade 20522 is made of flexible material, and is further combined with the above-mentioned bracket 20511 and coating 20512 made of nickel and titanium memory alloy to form a foldable pump head 205.
- the pump head 205 may also be non-foldable.
- the pump shell 2051 can be a metal sleeve, which cannot radially fold or self-expand.
- Impeller 2052 is also made of a hard but biocompatible material.
- the drive shaft 202 includes a flexible flexible shaft 2021 and a hard shaft 2022 connected to the distal end of the flexible shaft 2021.
- the flexible shaft 2021 is threaded in the catheter 201
- the hard shaft 2022 is threaded in the hollow channel of the hub 20521
- the outer wall of the hard shaft 2022 It is fixed with the inner wall of the hollow channel of the hub 20521 by bonding.
- the proximal end and the distal end of the bracket 20511 are respectively connected to the proximal bearing chamber 206 and the distal bearing chamber 207.
- the proximal bearing 208 and the distal bearing 209 are respectively provided in the proximal bearing chamber 206 and the distal bearing chamber 207.
- the proximal end and the distal end of the hard shaft 2022 are respectively inserted into the proximal bearing 208 and the distal bearing 209. In this way, both ends of the hard shaft 2022 are supported by the bearings 208 and 209, and coupled with the higher rigidity of the hard shaft 2022, the impeller 2052 is better kept in the pump casing 2051.
- the driving catheter handle 204 includes a coupling housing 2045 , a flushing bracket 2041 is disposed in the coupling housing 2045 , and the flushing bracket 2041 defines a flushing chamber 2042 .
- the proximal end of the catheter 201 passes through the coupling housing 2045 and is connected to the irrigation bracket 2041 and communicates with the irrigation chamber 2042.
- the driving catheter handle 204 is provided with a flushing liquid inlet 2043 that penetrates the side wall of the coupling housing 2045, and the inner end of the flushing liquid inlet 2043 is connected to the flushing chamber 2042.
- a liquid isolation wall 2048 can be set between the two or outside the driven member 203 to seal the flushing liquid and prevent The flushing fluid enters the motor 102.
- the liquid isolation wall 2048 limits the flow direction of the flushing liquid, so that the flushing liquid can only flow toward the far end, that is, the working component 200, thereby lubricating and cooling the above-mentioned rotating components in the working component 200, such as the drive shaft 202, bearings, etc. .
- the drive catheter handle 204 also includes a rotor 2046 rotatably provided in the coupling housing 2045 .
- the rotor 2046 includes a rotor shaft 2047 disposed with the driven member 203 and to which the proximal end of the drive shaft 202 is connected.
- the liquid isolation wall 2048 is provided on the coupling housing 2045 and is located at the rear end of the flushing bracket 2041. The liquid isolation wall 2048 is docked with the flushing bracket 2041 and jointly define a receiving cavity 2049 in which the rotor 2046 is received.
- the accommodation chamber 2049 includes a flushing chamber 2042 defined by the flushing bracket 2041, and a liquid isolation chamber 2050 defined by the liquid isolation wall 2048.
- the flushing chamber 2042 is in communication with the liquid isolation chamber 2050.
- the flushing chamber 2042 is connected to the flushing fluid source 602 (flush saline, glucose solution, anticoagulant, or any combination of the above) through the flushing fluid inlet 2043 , and the flushing fluid enters the flushing chamber through the flushing fluid inlet 2043
- the accommodating cavity 2049 is refilled, enters through the proximal end of the catheter 201 connected to the flushing stent 2041, and then flows to the distal end through the catheter 201.
- the drive shaft 202 is lubricated.
- the flexible shaft 2021 has a braided structure, and liquid can penetrate into the flexible shaft.
- the flushing liquid flowing out of the flexible shaft 2021 washes the proximal bearing 208 and flows out from the gap between the proximal bearing 208 and the hard shaft 2022, thereby achieving lubrication and cooling of the proximal bearing 208.
- the flushing fluid flowing forward in the flexible shaft 2021 enters the hard shaft 2022 and flows out from the distal end of the hard shaft 2022. It is blocked by the seal 213 located in the distal bearing chamber 207 and located at the distal end of the hard shaft 2022. , the flushing liquid flows out in the reverse direction and flows out from the gap between the hard shaft 2022 and the distal bearing 209 to lubricate and cool the distal bearing 209.
- the coupling housing 2045 is also provided with a flushing fluid outlet 246 connected to the accommodation cavity 2049 .
- the flushing liquid outlet 246 is specifically connected to the liquid isolation wall 2048 .
- the catheter pump 100 includes a cooling circulation module 500 that circulates most of the irrigation fluid outside the body and a pressure maintenance module 600 that maintains the pressure of the irrigation fluid in the cooling circulation circuit.
- the cooling cycle module 500 includes a flushing liquid inlet pipe 501 connected with the flushing liquid inlet 2043 and a flushing liquid outlet pipe 502 connected with the flushing liquid outlet 246 .
- the flushing liquid outlet pipe 502 is connected with the flushing liquid inlet pipe 501, and they form a cooling circulation loop with the accommodation cavity 2049.
- the cooling circulation loop is provided with a circulation driving component 503 that drives the flushing liquid to flow.
- the pressure maintenance module 600 is connected to the cooling circulation circuit and maintains the flushing fluid pressure in the cooling circulation circuit to be greater than the ambient pressure of the pump head 205 during operation. In this way, the flushing liquid in the cooling circulation circuit can partially enter the human body through the conduit 201 to achieve cooling and lubrication of the rotating parts in the working assembly 200 . At the same time, under the driving action of the circulation driving member 503, the flushing fluid continues to circulate in the cooling circulation loop, taking away the high temperature of the flushing fluid caused by the high-speed rotation of the rotor 2046, thereby cooling the flushing fluid.
- the front end (blood inlet 2051a) of the pump head 205 is inserted into the left ventricle during operation of the catheter pump 1000, and the rear end (blood outlet 2051b) is located in the aorta. Moreover, since the impeller 2052 rotates to pump blood, the distal end of the catheter 201 is in a positive blood pressure zone. Therefore, the environmental pressure of the pump head 205 during operation includes ventricular pressure, aortic pressure, positive blood pressure, etc. The resistance of the flushing fluid entering the conduit 201 is greater than that of flowing out from the flushing fluid outlet 246 . This means that in order for the irrigation fluid to enter the human body through the catheter 201, it must overcome the above-mentioned environmental pressure.
- the bearing gap is specifically the gap between the outer wall of the hard shaft 2022 and the inner wall of the proximal bearing 208, and the gap between the outer wall of the hard shaft 2022 and the inner wall of the distal bearing 209.
- the forward flow of the first part of the flushing fluid will encounter flow resistance at the bearing gap, and the flow resistance is inversely related to the size of the bearing gap. That is, the larger the bearing clearance, the smaller the flow resistance of the flushing fluid. On the contrary, the smaller the bearing clearance, the greater the flow resistance of the flushing fluid.
- the flow resistance due to bearing clearance also constitutes at least part of the above-mentioned environmental pressure.
- the amount of flushing fluid entering the human body through the catheter 201 should not be too much and should be less than the amount flowing out from the flushing fluid outlet 246.
- the flushing fluid pressure in the cooling circulation circuit is maintained by the pressure maintenance module 600 and is greater than the ambient pressure of the pump head 205 in the working state, which is the reason why the flushing fluid can enter the conduit 201 with greater resistance. Therefore, by controlling the flushing fluid pressure in the cooling circulation circuit through the pressure maintenance module 600, the flushing fluid can be distributed in compliance with the above flow rate.
- the flushing fluid pressure in the cooling circulation circuit is controlled by the pressure maintenance module 600 to be slightly greater than the ambient pressure of the pump head 205 during operation.
- the rotor shaft 2047 has an axially penetrating channel 2053.
- the flushing chamber 2042 and the liquid isolation chamber 2050 are connected through the channel 2053 (the proximal end of the channel 2053 is located in the flushing chamber 2042, and the distal end is located in the liquid isolation chamber.
- the conduit 202, the flushing fluid inlet 2043 are connected to the flushing chamber 2042, and the flushing fluid outlet 2046 is connected to the liquid isolation chamber 2050.
- the flushing fluid entering the flushing chamber 2042 flows backward to the liquid isolation chamber 2050 through the channel 2053, and finally flows out from the flushing fluid outlet 2046, so that the flushing fluid can continuously circulate and cool the rotor 2046.
- the accommodation cavity 2049 is provided with a first bearing 235 for rotationally supporting the distal end of the rotor shaft 2047.
- the first bearing 235 partially isolates the flushing chamber 2042 from the liquid isolation chamber 2050.
- the flushing liquid inlet 2043 and the flushing fluid inlet 2043 are Liquid outlets 2046 are located on both sides of bearing 235 .
- the diameter of the rotor shaft 2047 is smaller than the inner diameter of the first bearing 235, and there is a first gap 2351 between the two.
- the flushing fluid can pass through the first gap 2351 to lubricate the first bearing 235.
- the cross-sectional area of the first gap 2351 is smaller than the cross-sectional area of the channel 2053, so the flushing fluid mainly flows backward through the channel 2053 with a larger cross-sectional area to ensure the flushing fluid flow for circulating cooling.
- the accommodating cavity 2049 is also provided with a second bearing 236 for rotationally supporting the proximal end of the rotor shaft 2047.
- the second bearing 236 is located at the proximal end of the first bearing 235 and cooperates with the first bearing 235 to achieve double rotation of the rotor 2046.
- the end rotation support is beneficial to maintaining the stability of the rotation of the rotor 2046.
- the diameter of the rotor shaft 2047 is smaller than the inner diameter of the second bearing 236, and there is a second gap 2362 between the two. The flushing liquid can pass through the second gap 2362 to lubricate the second bearing 236.
- the second bearing 236 is provided with an overflow hole 2361 penetrating in the axial direction, and the cross-sectional area of the overflow hole 2361 is larger than the cross-sectional area of the second gap 2362. In this way, the hole channel area for the forward return flow of the flushing fluid can be increased, the resistance of the flushing fluid can be reduced, and a large circulation flow rate can be achieved.
- the pressure maintenance module 600 includes a flushing liquid source 602 connected to the cooling cycle through a replenishing pipeline 601, and is provided on the replenishing pipeline 601 to replenish the flushing liquid provided by the flushing liquid source 602 to the cooling cycle. Pump 603 in.
- the flushing fluid consumed due to entering the conduit 201 is replenished by an additional liquid source, that is, the flushing fluid source 602 .
- the pressure of the flushing liquid in the cooling circuit is maintained by another driving structure, that is, the pump 603.
- the flushing fluid circulation and flushing fluid pressure maintenance are completed by the circulation driver 503 and the pump 603 respectively, and the pressure required for flushing fluid circulation and the pressure required for flushing fluid pressure maintenance are different (generally, the pressure required for flushing fluid circulation less than the flushing fluid pressure required to maintain the pressure). Therefore, the flushing fluid circulation and pressure maintenance are driven separately, which can simplify the control of the circulation driving member 503 and the pump 603, and make the flushing fluid pressure control and flushing fluid flow control more accurate.
- the cooling cycle module 600 also includes a buffer container 504.
- the flushing liquid inlet pipe 501, the flushing liquid outlet pipe 502 and the supplementary pipeline 603 are all connected with the buffer container 504.
- the pipeline can use a Luer head to connect with the cache container 504, and the pipeline connection is convenient.
- the buffer container 504 can at least withstand the pressure compensation of the pressure maintaining module 600 without changing the volume.
- the cache container 504 is a solid tank with high pressure resistance and constant volume under normal pressure.
- the cache container 504 can directly use a tee joint, the three ports of which are respectively connected to the flushing liquid inlet pipe 501, the flushing liquid outlet pipe 502 and the replenishment pipeline 603, and are connected by the internal chamber of the tee joint. To construct the above-mentioned chamber whose volume remains constant when under pressure. Therefore, constructing the buffer container 504 with a tee joint greatly simplifies the flushing pipeline.
- the flushing liquid inlet pipe 501 and the flushing liquid outlet pipe 502 that construct the cooling circulation loop are generally hoses.
- the diameter of the hose will expand under the action of high flushing liquid pressure, thereby causing the cooling cycle.
- Change in volume of the circuit If the volume of the cooling circulation circuit changes, but the pressure maintenance module 600 still operates according to the original state (such as the rotation speed of the pump), it may cause the pressure of the flushing fluid in the cooling circulation loop to change (decrease), thereby causing the flushing fluid to enter the conduit 201
- the quantity is unstable.
- a buffer container 504 with a constant volume is provided in the cooling cycle (the volume of the buffer container 504 constitutes a part of the cooling cycle), although the flushing liquid inlet pipe 501 and the flushing liquid outlet pipe 502 will not change, the pipe diameters will expand. However, compared with the volumes of the flushing liquid inlet pipe 501 and the flushing liquid outlet pipe 502, the volume of the buffer container 504 is larger, and the volume of the buffer container 504 is not easy to change. In this way, the volume change rate of the cooling circuit can be significantly reduced.
- a pump 603 which maintains the pressure of the cooling circulation circuit, is connected to the buffer container 504 through a supplementary pipeline 601 .
- the pumping pressure of the pump 603 directly acts on the buffer container 504 and does not act on the flushing liquid inlet pipe 501 and flushing liquid outlet pipe 502, which can also slow down the flushing liquid inlet pipe 501 and flushing liquid outlet pipe 502 to a certain extent.
- the effect of pipe diameter changes.
- the buffer container 504 by arranging the buffer container 504 with a constant volume in the cooling cycle, the problem of volume changes in the cooling cycle is at least partially solved, thereby improving the flushing fluid pressure maintenance or control accuracy.
- the circulation driving member 503 is a pump provided on the flushing liquid inlet pipe 501 and/or the flushing liquid outlet pipe 502 and is different from the pump 603 (for distinction, this pump is defined as the third pump).
- this pump is defined as the third pump.
- the cooling circulation circuit is provided with a bubble filter 258 (Filter Bubble), which is used to filter or capture bubbles to prevent them from entering the human body through the conduit 201. Further, the bubble filter 258 is provided on the flushing liquid inlet pipe 501 . This design facilitates the placement of the bubble filter 258 and avoids interference with other structures.
- a bubble filter 258 Frter Bubble
- the bubble filter 258 is provided on the flushing liquid inlet pipe 501 . This design facilitates the placement of the bubble filter 258 and avoids interference with other structures.
- bubbles are mainly generated in the liquid isolation chamber 2050, and then flow out with the flushing liquid through the flushing liquid outlet 246. After circulating in the flushing liquid outlet pipe 502 and the flushing liquid inlet pipe 501, they re-enter the flushing chamber 2042 through the flushing liquid inlet 2043. . It can be seen that from the time the bubbles are generated until they re-enter the flushing chamber 2042 through the flushing liquid inlet 2043, they will not enter the human body through the catheter 201. This means that as long as the bubbles enter the flushing chamber 2042, the bubbles can be basically prevented from entering the human body. Therefore, disposing the bubble filter 258 on the flushing liquid inlet pipe 501 can achieve the above purpose.
- the bubble filter 258 can adopt any suitable existing structure, such as a filter net or a filter membrane, which is not limited in this embodiment.
- the filter screen or filter membrane is stored in the shell structure.
- the flow area of the filter screen or filter membrane can be increased as much as possible, and the shell of the filter screen or filter membrane can be accommodated.
- a flat expanded structure can be used.
- the motor shaft 1021 is provided with a rotating bracket 105
- the driving member 103 is arranged on the inner wall of the rotating bracket 105 .
- the motor housing 101 is provided with a bearing chamber 109.
- the bearing chamber 109 is connected to the motor 102 through a flange 111.
- the bearing chamber 109 is provided with a bearing 110 for rotationally supporting the rotating bracket 105. Therefore, the rotating components in the driving assembly 100 such as the motor 102, the driving member 103 and the bearing 110 are parts that generate large amounts of heat.
- the motor 102 is in contact with the bearing chamber 109 through the flange 111 .
- the driving part 103, the rotating bracket 105, the bearing 110, the bearing chamber 109, the flange 111 and the motor 102 are connected and in physical contact.
- a motor 102, flange, bearing chamber 109, The heat conduction path from the bearing 110, the rotating bracket 105 to the active part 103 allows the heat of the motor 102, the main heat-generating component of the driving assembly 110, the bearing 110 and the active part 103 to be taken away by the large flow of flushing fluid circulating in the drive catheter handle 204, and Further, when the flushing fluid participates in the extracorporeal circulation, it is dissipated into the outside air to achieve cooling of the above components.
- the active component 103 is the component closest to the flushing liquid.
- the heat of the active component 103 is transferred to the flushing fluid in the liquid isolation chamber 2050 through the liquid isolation wall 2048, thereby being cooled and forming a relatively low temperature, so that the heat of other physically contacting components is It is transmitted to the active part 103 and transmitted to the liquid isolation chamber 2050 through the liquid isolation wall 2048 to achieve cooling.
- the motor case 101 is made of plastic material. Compared with the casing made of metal, the plastic motor casing 101 is lower in cost, lighter in weight, and feels better, but has worse heat dissipation effect. Among them, the worse the heat dissipation effect, the better the clinical effect. The reason is that the outer surface of the motor housing 101 is inevitably contacted by the human body.
- the motor shell 101 is made of a material with good thermal conductivity such as metal.
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Cardiology (AREA)
- Animal Behavior & Ethology (AREA)
- Mechanical Engineering (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Transplantation (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims (17)
- 一种导管泵,包括:马达;导管;驱动轴,可转动的穿设在所述导管中;泵头,包括:连接至所述导管远端的泵壳、收纳在所述泵壳中的叶轮;所述叶轮连接至所述驱动轴的远端,以被驱动旋转进行泵血;驱动导管手柄,包括:连接至所述导管近端并与所述马达可拆卸连接的耦合壳体、可被所述马达驱动的转子;所述驱动轴的近端连接至所述转子,所述耦合壳体内形成有将所述转子可转动的支撑在其内的容置腔;所述导管与所述容置腔连通,所述耦合壳体设有与所述容置腔连通的冲洗液入口和冲洗液出口;冷却循环模块,包括:与所述冲洗液入口连通的冲洗液入管、与所述冲洗液出口连通的冲洗液出管;所述冲洗液入管、所述容置腔与所述冲洗液出管形成冷却循环回路,在所述冷却循环回路上设有用以驱动冲洗液流动的第一泵;压力维持模块,包括:通过补充管路与所述冷却循环回路连通的冲洗液源、设在所述补充管路上用以将所述冲洗液源提供的冲洗液补充至所述冷却循环回路中的第二泵。
- 如权利要求1所述的导管泵,所述第二泵用以维持所述冷却循环回路内的冲洗液压力大于所述泵头在工作过程中所处的环境压力。
- 如权利要求1或2所述的导管泵,经所述冲洗液入口进入到所述容置腔中的冲洗液,一部分进入所述导管并在所述泵头处全部排出至人体,另一部分经过所述转子再从所述冲洗液出口排出。
- 如权利要求3所述的导管泵,进入所述导管的冲洗液的量小于从所述冲洗液出口排出的冲洗液的量。
- 如权利要求1所述的导管泵,所述冷却循环模块还包括缓存容器,所述冲洗液入管、冲洗液出管和补充管路均与所述缓存容器连通;所述缓存容器至少能承受所述压力维持模块的补压而不发生容积变化。
- 如权利要求5所述的导管泵,所述缓存容器包括固体罐或三通接头。
- 如权利要求1所述的导管泵,所述冷却循环回路设有气泡过滤器。
- 如权利要求7所述的导管泵,所述气泡过滤器设在所述冲洗液入管上。
- 如权利要求1所述的导管泵,所述转子包括连接至所述驱动轴近端的转子轴,所述转子轴具有沿轴向贯穿的通道;所述驱动导管手柄还包括设在所述耦合壳体内的冲洗支架和液体隔离壁,所述洗支架限定冲洗腔,所述液体隔离壁限定液体隔离腔;所述冲洗腔和液体隔离腔通过所述通道连通;所述导管、冲洗液入口与所述冲洗腔连通,所述冲洗液出口与所述液体隔离腔连通。
- 如权利要求9所述的导管泵,所述马达驱动主动件,以将所述马达的旋转动力传递至与所述主动件耦合的从动件,所述液体隔离壁位于所述主动件与所述从动件之间,所述主动件的热量通过所述液体隔离壁传递至所述液体隔离腔内的冲洗液。
- 如权利要求10所述的导管泵,所述马达的马达轴连接旋转支架,所述主动件设在所述旋转支架的内壁;所述马达收纳在马达壳内,所述马达壳内设有轴承室,所述轴承室通过法兰与马达连接,所述轴承室内设有用于对所述旋转支架进行转动支撑的轴承。
- 如权利要求10或11所述的导管泵,所述马达壳的材质为塑料。
- 如权利要求9所述的导管泵,所述容置腔内设有用于对所述转子轴的远端进行转动支撑的第一轴承,所述第一轴承将冲洗腔和液体隔离腔进行部分液体隔离,所述冲洗液入口和冲洗液出口位于所述第一轴承的两侧。
- 如权利要求13所述的导管泵,所述第一轴承与转子轴之间存在第一间隙。
- 如权利要求14所述的导管泵,所述第一间隙的截面积小于所述通道的截面积。
- 如权利要求13所述的导管泵,所述容置腔内设有用于对所述转子轴的近端进行转动支撑的第二轴承,所述第二轴承与转子轴之间存在第二间隙。
- 如权利要求16所述的导管泵,所述第二轴承设有沿轴向贯穿的过流孔,所述过流孔的截面积大于所述第二间隙的截面积。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025508995A JP2025526924A (ja) | 2022-08-15 | 2023-08-15 | カテーテルポンプ |
| CN202380059720.2A CN120187489A (zh) | 2022-08-15 | 2023-08-15 | 导管泵 |
| KR1020257008239A KR20250072959A (ko) | 2022-08-15 | 2023-08-15 | 카테터 펌프 |
| EP23854454.8A EP4574199A4 (en) | 2022-08-15 | 2023-08-15 | CATHETER PUMP |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210976332.8 | 2022-08-15 | ||
| CN202210976332 | 2022-08-15 | ||
| CN202211578294 | 2022-12-09 | ||
| CN202211578294.7 | 2022-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024037554A1 true WO2024037554A1 (zh) | 2024-02-22 |
Family
ID=89940718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/113206 Ceased WO2024037554A1 (zh) | 2022-08-15 | 2023-08-15 | 导管泵 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4574199A4 (zh) |
| JP (1) | JP2025526924A (zh) |
| KR (1) | KR20250072959A (zh) |
| WO (1) | WO2024037554A1 (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118320296A (zh) * | 2024-06-14 | 2024-07-12 | 安徽通灵仿生科技有限公司 | 血泵传动装置的冲洗系统 |
| CN118320295A (zh) * | 2024-06-14 | 2024-07-12 | 安徽通灵仿生科技有限公司 | 血泵传动装置的冲洗液密封系统 |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820933B (zh) | 2007-10-08 | 2013-03-27 | 亚琛创意解决方案Ais有限责任公司 | 导管装置 |
| DE202011110447U1 (de) * | 2011-12-22 | 2014-01-24 | Ecp Entwicklungsgesellschaft Mbh | Schleuseneinrichtung zum Einführen eines Katheters |
| US20170319764A1 (en) * | 2015-01-22 | 2017-11-09 | Tc1 Llc | Reduced rotational mass motor assembly for catheter pump |
| CN110290825A (zh) * | 2017-02-13 | 2019-09-27 | 卡迪奥布里奇有限公司 | 具有驱动单元和导管的导管泵 |
| CN110325228A (zh) * | 2017-02-13 | 2019-10-11 | 卡迪奥布里奇有限公司 | 具有驱动单元和导管的导管泵 |
| CN111375096A (zh) * | 2018-12-28 | 2020-07-07 | 上海微创心力医疗科技有限公司 | 一种冷却系统和导管泵系统 |
| CN211132606U (zh) * | 2019-08-01 | 2020-07-31 | 杨礼瑾 | 动力源可置于人体内的旋转传动导管 |
| US20200345337A1 (en) * | 2019-05-01 | 2020-11-05 | Tc1 Llc | Introducer sheath assembly for catheter systems and methods of using same |
| CN112654389A (zh) * | 2018-08-07 | 2021-04-13 | 开迪恩有限公司 | 用于心脏支持系统的轴承装置和冲洗用于心脏支持系统的轴承装置中的中间空间的方法 |
| CN113856036A (zh) | 2021-01-22 | 2021-12-31 | 苏州心擎医疗技术有限公司 | 动力传递组件及血泵 |
| CN215461410U (zh) * | 2021-06-18 | 2022-01-11 | 苏州心擎医疗技术有限公司 | 心室辅助装置 |
| CN216061675U (zh) | 2021-08-27 | 2022-03-18 | 苏州心擎医疗技术有限公司 | 用于对心脏在发生功能衰竭时进行辅助的装置 |
| CN114452527A (zh) | 2022-01-26 | 2022-05-10 | 苏州心擎医疗技术有限公司 | 用于对心脏在发生功能衰竭时进行辅助的装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1085322A (ja) * | 1996-07-26 | 1998-04-07 | San Medical Gijutsu Kenkyusho:Kk | 人工心臓の可搬駆動システム |
| EP2246078A1 (de) * | 2009-04-29 | 2010-11-03 | ECP Entwicklungsgesellschaft mbH | Wellenanordnung mit einer Welle, die innerhalb einer fluidgefüllten Hülle verläuft |
| EP2860399A1 (de) * | 2013-10-14 | 2015-04-15 | ECP Entwicklungsgesellschaft mbH | Verfahren zum Betrieb einer Versorgungseinrichtung, die einen Kanal mit einer Flüssigkeit beaufschlagt, sowie Versorgungseinrichtung |
-
2023
- 2023-08-15 WO PCT/CN2023/113206 patent/WO2024037554A1/zh not_active Ceased
- 2023-08-15 EP EP23854454.8A patent/EP4574199A4/en active Pending
- 2023-08-15 JP JP2025508995A patent/JP2025526924A/ja active Pending
- 2023-08-15 KR KR1020257008239A patent/KR20250072959A/ko active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820933B (zh) | 2007-10-08 | 2013-03-27 | 亚琛创意解决方案Ais有限责任公司 | 导管装置 |
| DE202011110447U1 (de) * | 2011-12-22 | 2014-01-24 | Ecp Entwicklungsgesellschaft Mbh | Schleuseneinrichtung zum Einführen eines Katheters |
| US20170319764A1 (en) * | 2015-01-22 | 2017-11-09 | Tc1 Llc | Reduced rotational mass motor assembly for catheter pump |
| CN110290825A (zh) * | 2017-02-13 | 2019-09-27 | 卡迪奥布里奇有限公司 | 具有驱动单元和导管的导管泵 |
| CN110325228A (zh) * | 2017-02-13 | 2019-10-11 | 卡迪奥布里奇有限公司 | 具有驱动单元和导管的导管泵 |
| CN112654389A (zh) * | 2018-08-07 | 2021-04-13 | 开迪恩有限公司 | 用于心脏支持系统的轴承装置和冲洗用于心脏支持系统的轴承装置中的中间空间的方法 |
| CN111375096A (zh) * | 2018-12-28 | 2020-07-07 | 上海微创心力医疗科技有限公司 | 一种冷却系统和导管泵系统 |
| US20200345337A1 (en) * | 2019-05-01 | 2020-11-05 | Tc1 Llc | Introducer sheath assembly for catheter systems and methods of using same |
| CN211132606U (zh) * | 2019-08-01 | 2020-07-31 | 杨礼瑾 | 动力源可置于人体内的旋转传动导管 |
| CN113856036A (zh) | 2021-01-22 | 2021-12-31 | 苏州心擎医疗技术有限公司 | 动力传递组件及血泵 |
| CN215461410U (zh) * | 2021-06-18 | 2022-01-11 | 苏州心擎医疗技术有限公司 | 心室辅助装置 |
| CN216061675U (zh) | 2021-08-27 | 2022-03-18 | 苏州心擎医疗技术有限公司 | 用于对心脏在发生功能衰竭时进行辅助的装置 |
| CN114452527A (zh) | 2022-01-26 | 2022-05-10 | 苏州心擎医疗技术有限公司 | 用于对心脏在发生功能衰竭时进行辅助的装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4574199A4 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118320296A (zh) * | 2024-06-14 | 2024-07-12 | 安徽通灵仿生科技有限公司 | 血泵传动装置的冲洗系统 |
| CN118320295A (zh) * | 2024-06-14 | 2024-07-12 | 安徽通灵仿生科技有限公司 | 血泵传动装置的冲洗液密封系统 |
| CN118320295B (zh) * | 2024-06-14 | 2024-09-24 | 安徽通灵仿生科技有限公司 | 血泵传动装置的冲洗液密封系统 |
| CN118320296B (zh) * | 2024-06-14 | 2024-09-24 | 安徽通灵仿生科技有限公司 | 血泵传动装置的冲洗系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4574199A4 (en) | 2025-11-12 |
| EP4574199A1 (en) | 2025-06-25 |
| KR20250072959A (ko) | 2025-05-26 |
| JP2025526924A (ja) | 2025-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11759612B2 (en) | Reduced rotational mass motor assembly for catheter pump | |
| US20240165396A1 (en) | Gas-filled chamber for catheter pump motor assembly | |
| US20240277994A1 (en) | Motor assembly with heat exchanger for catheter pump | |
| WO2024037554A1 (zh) | 导管泵 | |
| CN114215792B (zh) | 一种带全封闭清洗液循环系统的微型泵 | |
| CN115282468B (zh) | 一种介入式血泵 | |
| CN112891732A (zh) | 一种灌注液输送装置及其控制方法 | |
| WO2013145135A1 (ja) | 補助人工心臓システム | |
| CN114082098A (zh) | 一种柔性传动系统及血泵 | |
| CN221601051U (zh) | 导管泵 | |
| CN114392476B (zh) | 一种高温超导磁悬浮轴流式血泵 | |
| CN120187489A (zh) | 导管泵 | |
| CN218833390U (zh) | 心室辅助装置 | |
| US20230096277A1 (en) | Catheter pump motor assembly including lubricated rotor chamber | |
| CN221889017U (zh) | 导管泵 | |
| US20230201559A1 (en) | Moisture absorbing seal for catheter fluid system | |
| CN219355088U (zh) | 一种血管壁支撑式主动脉泵血装置 | |
| US20230211146A1 (en) | Impeller seal assembly for a percutaneous heart pump | |
| CN222871168U (zh) | 泵血装置和电机 | |
| Mather et al. | Newer mechanical devices in the management of acute heart failure | |
| Fukamachi et al. | Progress in the development of the DexAide right ventricular assist device | |
| CN111375096A (zh) | 一种冷却系统和导管泵系统 | |
| CN120227579A (zh) | 泵体及介入式导管泵系统 | |
| CN117294035A (zh) | 用于心脏辅助装置的驱动电机及心脏辅助装置 | |
| JP2006280395A (ja) | 体外循環血液回路 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23854454 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380059720.2 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025508995 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202517022509 Country of ref document: IN Ref document number: 1020257008239 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023854454 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023854454 Country of ref document: EP Effective date: 20250317 |
|
| WWP | Wipo information: published in national office |
Ref document number: 202517022509 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020257008239 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380059720.2 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023854454 Country of ref document: EP |