CN116942251A

CN116942251A - Thrombus clearing device

Info

Publication number: CN116942251A
Application number: CN202311047566.5A
Authority: CN
Inventors: 徐晓明; 王海军; 林龑
Original assignee: Baiwei Wuhan Medical Technology Co ltd
Current assignee: Baiwei Wuhan Medical Technology Co ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2023-10-27

Abstract

The application discloses a thrombus removing device. The thrombus removing device comprises a shell, a driving assembly, a guide wire, a first catheter, a second catheter and a suction device, wherein an accommodating space is formed in the shell; the driving component is arranged in the accommodating space; the connecting end of the guide wire is connected with the driving component, and the driving component can drive the guide wire to rotate; the free end of the guide wire far away from the driving component is exposed out of the accommodating space; the first catheter is sleeved outside the guide wire; the second conduit is coaxially sleeved outside the first conduit, and a first accommodating cavity is formed between the second conduit and the first conduit; the second conduit is provided with a suction inlet which is communicated with the first accommodating cavity; the suction device is communicated to the first accommodating cavity; the driving assembly drives the guide wire to rotate so as to destroy thrombus and form thrombus fragments, and the thrombus fragments enter the first accommodating cavity through the suction inlet and are sucked out by the suction device.

Description

Thrombus clearing device

Technical Field

The application relates to the technical field of medical instruments, in particular to a thrombus removing device.

Background

Thrombus is a small block of blood flow formed on the surface of the inside surface of a cardiovascular system vessel where it is exfoliated or repaired. Thrombus can cause serious harm to human health; for example, thrombosis may produce ischemic symptoms of the corresponding viscera, and severe symptoms such as limb necrosis. If thrombosis occurs in a blood vessel, it may cause blood flow to be blocked. Thromboembolism can lead to reduced blood supply to organs or tissues, or blood deposition in certain organs or tissues, resulting in organ failure or dysfunction, and thromboembolic disorders are clinically very common and severely endanger the life health of the human body.

Clinically, as for the condition of vessel occlusion and thrombus accumulation, a thrombus removing device is mostly adopted for interventional operation treatment so as to destroy and remove thrombus. However, the prior art thrombolytic devices are not effective in collecting thrombus fragments and extracting the thrombus fragments from the body; therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

It is an object of the present application to provide a new solution for a thrombi removal device.

According to a first aspect of the present application, there is provided a thrombus removal device comprising:

a housing having an accommodation space therein;

the driving assembly is arranged in the accommodating space;

the connecting end of the guide wire is connected with the driving assembly, and the driving assembly can drive the guide wire to rotate; the free end of the guide wire, which is far away from the driving assembly, is exposed out of the accommodating space;

the first catheter is sleeved outside the guide wire;

the second guide pipe is coaxially sleeved outside the first guide pipe, and a first accommodating cavity is formed between the second guide pipe and the first guide pipe; the second conduit is provided with a suction inlet which is communicated with the first accommodating cavity;

the suction device is communicated with the first accommodating cavity;

the drive assembly drives the guide wire to rotate so as to destroy thrombus and form thrombus fragments, and the thrombus fragments enter the first accommodating cavity through the suction inlet and are sucked out by the suction device.

Optionally, the thrombus removal device further comprises an adapter having at least a first adapter port in communication with the first receiving cavity and a second adapter port in communication with the aspiration device;

the thrombus fragments enter the first accommodating cavity through the suction inlet and are sucked out by the suction device through the adapter.

Optionally, the suction device comprises a suction barrel, a suction rod and a suction catheter;

the interior of the suction cylinder is provided with a hollow cavity, and the suction cylinder is provided with a bottom wall and an opening part which are oppositely arranged;

one end of the suction conduit is communicated with the first accommodating cavity, and the other end of the suction conduit is communicated with the hollow cavity of the suction cylinder through the bottom wall of the suction cylinder;

the partial structure of the suction rod is arranged in the hollow cavity of the suction cylinder through the opening part of the suction cylinder, and the suction rod is configured to: the air pressure in the hollow chamber of the suction barrel gradually decreases during movement of the suction rod away from the bottom wall of the suction barrel.

Optionally, the inner side wall of the suction cylinder is provided with a first clamping piece at a position corresponding to the opening part, and the side wall of the suction rod is provided with a plurality of second clamping pieces along the axial direction; and under the condition that the first clamping piece is abutted with the second clamping piece, the position of the suction rod is fixed relative to the suction cylinder.

Optionally, a supporting rib is disposed in the first accommodating cavity, one end of the supporting rib is connected with the outer wall of the first conduit, and the other end of the supporting rib is connected with the inner wall of the second conduit.

Optionally, along the axial direction of the second catheter, a plurality of supporting rib groups are arranged in the first accommodating cavity at intervals, and any supporting rib group comprises at least three supporting ribs.

Optionally, at least three of the support ribs are uniformly distributed along the circumferential direction of the second conduit.

Optionally, the second catheter has a first end proximal to the free end of the guidewire and a second end distal to the free end of the guidewire;

the suction inlet is arranged near the first end part, and the suction device is communicated with the first accommodating cavity near the second end part.

Optionally, a covering film is wrapped on the outer surface of the guide wire.

Optionally, the second catheter comprises a body portion and a connecting portion, and the connecting portion is connected with one end of the body portion; along the direction of keeping away from body portion, the bore of connecting portion reduces gradually, just connecting portion keep away from body portion's tip with first pipe fixed connection.

Optionally, the thrombi removal device further comprises a control assembly, the control assembly being connected to the second catheter; the control assembly can drive the second catheter and the first catheter to move along a first direction so as to enable the second catheter and the first catheter to be close to or far away from the free end of the guide wire.

Optionally, the control assembly comprises a first sleeve member and a second sleeve member, and a part of the second catheter is fixedly sleeved in the first sleeve member;

the first sleeve part is sleeved in the second sleeve part, and the outer side wall of the second sleeve part is connected with a toggle button; the shell is provided with a first positioning groove and a second positioning groove, and the first positioning groove and the second positioning groove are distributed along a first direction;

the second sleeve member can drive the first sleeve member to move along a first direction, and the second sleeve member can rotate relative to the first sleeve member;

when the second sleeve member drives the first sleeve member to move to a first position, the second sleeve member rotates and enables the toggle button to enter the first positioning groove so as to enable the control assembly to be fixed at the first position;

when the second sleeve member drives the first sleeve member to move to the second position, the second sleeve member rotates and enables the toggle button to enter the second positioning groove, so that the control assembly is fixed at the second position.

Optionally, the thrombus removal device further comprises a communication valve; a second accommodating cavity is formed between the first catheter and the guide wire;

the first sleeve member includes a first connection tube, and the thrombi-clearing device further includes a second connection tube;

one end of the second connecting pipe penetrates through the first connecting pipe and is connected to the first guide pipe, and the second connecting pipe is communicated with the second accommodating cavity; the other end of the second connection pipe is connected to the communication valve.

Optionally, the driving assembly comprises a motor, and the motor can drive the guide wire to rotate;

a damping sleeve is arranged between the motor and the guide wire; the connecting end of the guide wire is sleeved at one end of the damping sleeve, and the output shaft of the motor is sleeved at the other end of the damping sleeve.

Optionally, the driving assembly further comprises a power supply device and a display, wherein the motor and the display are respectively and electrically connected with the power supply device, and a display screen of the display is exposed out of the accommodating space of the shell; the display is configured to: for displaying the voltage value and/or the current value of the power supply device through a display screen thereof.

Optionally, the power supply device includes a power supply module, a first voltage conversion module, a second voltage conversion module, a third voltage conversion module, a switch module, and an electric quantity detection module;

the output end of the power supply module is connected with a first branch and a second branch, wherein the first branch is connected with the electric quantity detection module;

the second branch is connected with the first voltage conversion module, the first voltage conversion module is respectively connected with the second voltage conversion module and the third voltage conversion module, the second voltage conversion module and the third voltage conversion module are both connected with the switch module, and the switch module is connected with the motor.

The thrombus removing device provided by the embodiment of the application not only can damage thrombus, but also can effectively remove and collect fragments formed after thrombus damage; the thrombus collecting device does not need to be replaced, thereby greatly shortening the operation time, improving the operation efficiency and reducing the pain of patients.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic view showing the overall structure of a thrombus cleaning device according to one embodiment of the present application;

FIG. 2 is a schematic diagram showing the overall structure of a thrombus cleaning device according to one embodiment of the present application;

FIG. 3 is a schematic view showing an exploded structure of a thrombus cleaning device according to one embodiment of the present application;

FIG. 4 is a schematic view showing a part of a thrombus cleaning device according to an embodiment of the present application;

FIG. 5 is a schematic view showing a part of a thrombus cleaning device according to an embodiment of the present application;

FIG. 6 is a schematic view showing a part of a thrombus cleaning device according to an embodiment of the present application;

FIG. 7 is a block diagram showing the structure of a power supply device in the thrombus cleaning device according to one embodiment of the present application;

fig. 8 a-8 f are circuit configuration diagrams of a power supply device in a thrombectomy device according to one embodiment of the present application.

Fig. 9 is a schematic view showing a partial structure of a power supply device in the thrombectomy device according to one embodiment of the present application.

Reference numerals illustrate:

1. a housing; 11. a half shell; 100. a chute; 101. a first positioning groove; 102. a second positioning groove; 2. a drive assembly; 21. a motor; 22. a power supply device; 220. a power module; 221. a first voltage conversion module; 222. a second voltage conversion module; 223. a third voltage conversion module; 224. a switch module; 225. an electric quantity detection module; 226. a selection key; 227. an indicator light; 23. a display; 24. a control button; 3. a guide wire; 30. coating a film; 41. a first conduit; 42. a second conduit; 421. a body portion; 422. a connection part; 43. a support rib; 420. a suction inlet; 5. a suction device; 51. a suction cylinder; 52. a suction rod; 53. a suction catheter; 54. a suction pump; 501. a first clamping piece; 502. a second clamping piece; 510. a key; 6. an adapter; 60. a suction tube; 7. a control assembly; 71. a first sleeve member; 711. a first connection pipe; 72. a second sleeve member; 720. an avoidance groove; 73. toggle button; 8. a shock absorbing sleeve; 9. a communication valve; 90. and a second connection pipe.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1-6, a thrombi removal device is provided according to one embodiment of the present application. The thrombus removing device comprises a shell 1, a driving assembly 2 and a guide wire 3, wherein an accommodating space is formed in the shell 1; alternatively, the casing 1 is formed by connecting two half-shells 11; the driving assembly 2 is arranged in the accommodating space; the connecting end of the guide wire 3 is connected with the driving component 2, and the driving component 2 can drive the guide wire 3 to rotate; the free end of the guide wire 3 far away from the driving assembly 2 is exposed out of the accommodating space;

the device also comprises a first catheter 41, a second catheter 42 and a suction device 5, wherein the first catheter 41 is sleeved outside the guide wire 3; the second conduit 42 is coaxially sleeved outside the first conduit 41, and a first accommodating cavity is formed between the second conduit 42 and the first conduit 41; the second conduit 42 is provided with a suction inlet 420, and the suction inlet 420 is communicated with the first accommodating cavity; the suction device 5 is communicated with the first accommodating cavity; the drive assembly 2 drives the guide wire 3 to rotate so as to destroy thrombus and form thrombus fragments 01, and the thrombus fragments 01 enter the first accommodating cavity through the suction inlet 420 and are sucked out by the suction device 5.

With the thrombus removing device provided by the embodiment of the application, if the thrombus accumulation and blockage problems exist and operation treatment is needed, the guide wire 3, the first guide tube 41 and the second guide tube 42 of the thrombus removing device are put into the blood vessel of a patient together and are placed in a focus, then the guide wire 3 is controlled to rotate by the driving component 2, and the free end of the guide wire 3 damages thrombus.

After the thrombus is destroyed by the guide wire 3, forming thrombus fragments 01, starting the suction device 5 at the moment, and under the suction action of the suction device 5, the thrombus fragments 01 are dissociated towards the second guide pipe 42 and enter a first accommodating cavity formed between the second guide pipe 42 and the first guide pipe 41 through a suction inlet 420 formed on the second guide pipe 42; the thrombus fragments 01 then enter the suction device 5, thereby achieving the purposes of sucking the thrombus fragments away from the human body and collecting the thrombus fragments.

In summary, the thrombus removing device provided by the embodiment of the application not only can damage thrombus, but also can effectively remove and collect fragments formed after thrombus damage; the thrombus collecting device does not need to be replaced, thereby greatly shortening the operation time, improving the operation efficiency and reducing the pain of patients.

Referring to fig. 1 and 2, in one embodiment, the thrombus removal device further comprises an adapter 6, the adapter 6 having at least a first adapter port and a second adapter port, the first adapter port being in communication with the first receiving cavity and the second adapter port being in communication with the aspiration device 5;

the thrombus fragments enter the first receiving chamber via the suction port 420 and are aspirated away by the aspiration device 5 through the adapter 6.

Alternatively, the adapter 6 may be a three-way valve having three ports, wherein the first port communicates with the first receiving chamber through the suction tube 60, the second port communicates with the suction device 5, and the third port is used to connect an external device to deliver saline to the first receiving chamber when needed; for example, the normal saline is supplied to the first accommodation chamber before the suction device 5 is turned on to discharge the gas in the first accommodation chamber.

Referring to fig. 1, in one embodiment, the suction device 5 includes a suction cylinder 51, a suction rod 52, and a suction duct 53;

the interior of the suction cylinder 51 has a hollow chamber, and the suction cylinder 51 has a bottom wall and an opening portion which are oppositely provided;

one end of the suction conduit 53 is communicated with the first accommodating cavity, and the other end is communicated with the hollow cavity of the suction cylinder 51 through the bottom wall of the suction cylinder 51;

the partial structure of the suction rod 52 is disposed in the hollow chamber of the suction tube 51 via the opening of the suction tube 51, and the suction rod 52 is configured to: during the movement of the suction rod 52 away from the bottom wall of the suction cylinder 51, the air pressure in the hollow chamber of the suction cylinder 51 gradually decreases.

In this particular example, the suction device 5 operates on a principle similar to a syringe; a piston head is provided at an end of the suction rod 52 extending into the hollow chamber of the suction cylinder 51, and is abutted against the inner side wall of the suction cylinder 51.

When the thrombus fragments 01 need to be sucked by the suction device 5, the suction rod 52 is pulled in advance to enable the suction rod 52 to move away from the bottom wall of the suction cylinder 51 for a certain position, so that a certain vacuum is formed in the hollow cavity of the suction cylinder 51; at the beginning of the thrombus fragment removal operation, the adapter 6 is opened by a certain amount, whereby the aspiration of thrombus fragments is performed.

Referring to fig. 1, in one embodiment, a first clamping member 501 is disposed on an inner side wall of the suction cylinder 51 at a position corresponding to the opening, and a plurality of second clamping members 502 are disposed on a side wall of the suction rod 52 along an axial direction; when the first engaging piece 501 abuts against the second engaging piece 502, the position of the suction rod 52 is fixed with respect to the suction tube 51.

In this specific example, during pulling of the suction rod 52, the second clip 502 provided on the suction rod 52 is displaced in the circumferential direction from the first clip 501 provided on the inner side wall of the suction cylinder 51; when the suction rod 52 is moved into position, the suction rod 52 is rotated to align and abut the second clamping member 502 and the first clamping member 501, so as to fix the position of the suction rod 52 and avoid unnecessary movement of the suction rod 52.

Referring to fig. 2, in one embodiment, the suction device 5 comprises a suction conduit 53 and a suction pump 54; wherein one end of the suction duct 53 is connected to the suction pump 54, and the other end of the suction duct 53 is connected to the second adapter port of the adapter 6. The suction pump 54 may be, for example, an electric suction pump, with a plurality of keys 510 provided thereon to enable control of the activation, suspension, or deactivation of the suction pump 54.

Referring to fig. 6, in one embodiment, a supporting rib 43 is disposed in the first accommodating cavity, one end of the supporting rib 43 is connected to the outer wall of the first conduit 41, and the other end is connected to the inner wall of the second conduit 42.

In this specific example, the support rib 43 is provided in the first accommodation chamber formed between the first duct 41 and the second duct 42, and the support rib 43 not only can support the second duct 42; and the thrombus fragments formed after the destruction via the guide wire 3 can be secondarily destroyed, thereby ensuring that the aspiration device 5 can smoothly aspirate the thrombus fragments.

In one embodiment, a plurality of supporting rib groups are disposed in the first accommodating cavity at intervals along the axial direction of the second conduit 42, and each supporting rib group includes at least three supporting ribs 43.

In this particular example, one set of support ribs is provided at each end distance apart along the axial direction of the second conduit 42, and each set of support ribs includes at least three support ribs 43; in this way, under the suction action of the suction device 5, the thrombus fragments are continuously collided and destroyed by the supporting ribs 43 in the process of the free movement in the first accommodating cavity, so that the thrombus fragments are decomposed more thoroughly.

Referring to fig. 6, in one embodiment, at least three of the support ribs 43 are uniformly distributed along the circumferential direction of the second duct 42.

For example, each of the rib groups includes six ribs 43 uniformly distributed in the circumferential direction of the second duct 42, thereby improving the effect of breaking down the thrombus fragments.

In one embodiment, the second catheter 42 has a first end proximal to the free end of the guidewire 3 and a second end distal to the free end of the guidewire 3; the suction port 420 is opened near the first end, and the suction device 5 is communicated with the first accommodating cavity near the second end; for example, the first swivel interface of the adapter 6 communicates with the first receiving chamber near the second end.

In this particular example, thrombus fragments 01 enter the first receiving chamber from near the first end of the second conduit 42 via the suction port 420 and are then sucked away by the suction device 5 from near the second end of the second conduit 42. During this process, the thrombus fragments 01 are free to pass through the first receiving chamber in the axial direction of the second conduit 42, and are thereby sufficiently destroyed by the support ribs 43 provided in the first receiving chamber.

Referring to fig. 6, in one embodiment, the outer surface of the guide wire 3 is wrapped with a coating 30.

In this specific example, the coating 30 made of a smooth material is provided around the outer surface of the guide wire 3, so that the friction between the guide wire 3 and the first catheter 41 is reduced, and the damage of the guide wire 3 to the inner wall of the blood vessel is prevented.

Referring to fig. 4 and 5, in one embodiment, the second conduit 42 includes a body 421 and a connection 422, and the connection 422 is connected to one end of the body 421; the caliber of the connecting portion 422 is gradually reduced along the direction away from the main body 421, and the end of the connecting portion 422 away from the main body 421 is fixedly connected with the first conduit 41.

For example, the connection portion 422 is connected to one end of the body portion 421 near the free end of the guide wire 3; the connection portion 422 serves as a transition and connection between the body portion 421 and the first conduit 41, so that the second conduit 42 and the first conduit 41 form a fixed connection at the position of the connection portion 422.

Referring to fig. 1, 2 and 3, in one embodiment, the thrombi removal device further comprises a control assembly 7, said control assembly 7 being connected to said second conduit 42; the control assembly 7 may move the second catheter 42 and the first catheter 41 in a first direction, so that the second catheter 42 and the first catheter 41 are close to or far from the free end of the guide wire 3.

In this particular example, when the guidewire 3 is initially introduced into the patient's vessel but does not reach the lesion, the free end of the guidewire 3 is wrapped with the first catheter 41, which avoids unnecessary trauma to the patient's vessel as the guidewire 3 is introduced into the patient's vessel. When the guide wire 3 reaches the focus, the control component 7 drives the second guide tube 42 and the first guide tube 41 to move away from the free end of the guide wire 3, so that the free end of the guide wire 3 is completely exposed, and thrombus is destroyed and removed; alternatively, the free end of the guide wire 3 has an S-bend shape, so that the effect of destroying and removing thrombus can be enhanced.

Since the second conduit 42 forms a fixed connection with the first conduit 41 at the location of the connection 422, the control assembly 7 may move the second conduit 42 together with the first conduit 41 in the first direction.

Referring to fig. 1, 2 and 3, in one embodiment, the control assembly 7 includes a first sleeve member 71 and a second sleeve member 72, and a portion of the second conduit 42 is fixedly sleeved in the first sleeve member 71;

the first sleeve member 71 is partially sleeved in the second sleeve member 72, and a toggle button 73 is connected to the outer side wall of the second sleeve member 72; the shell 1 is provided with a first positioning groove 101 and a second positioning groove 102, and the first positioning groove 101 and the second positioning groove 102 are distributed along a first direction;

the second sleeve member 72 may move the first sleeve member 71 in a first direction, and the second sleeve member 72 may rotate relative to the first sleeve member 71;

when the second sleeve member 72 drives the first sleeve member 71 to move to the first position, the second sleeve member 72 rotates and makes the toggle 73 enter the first positioning slot 101, so that the control assembly 7 is fixed at the first position;

when the second sleeve member 72 drives the first sleeve member 71 to move to the second position, the second sleeve member 72 rotates and the toggle 73 enters the second positioning slot 102, so that the control assembly 7 is fixed at the second position.

In this particular example, the second conduit 42 is fixedly connected to the first sleeve member 71 by sleeving a portion of the second conduit 42 within the first sleeve member 71, such that the first sleeve member 71 is capable of moving the second conduit 42 and the first conduit 41 in the first direction. It will be appreciated that the first direction is the axial direction of the second catheter 42, the first catheter 41, the guidewire 3 and the first sleeve member 71.

The control assembly 7 can be conveniently operated by the toggle 73 to control the movement of the second conduit 42 and the first conduit 41. Specifically, the toggle button 73 may be manually operated, where the toggle button 73 drives the second sleeve member 72 and the second sleeve member 72 to further drive the first sleeve member 71 to move along the first direction, and the first sleeve member 71 may drive the second conduit 42 and the first conduit 41 to move along the first direction. In the case that the second conduit 42 and the first conduit 41 are moved into position and the movement is not required to be continued for a while, the operator can hold the toggle 73 to rotate, and then the second sleeve member 72 rotates along with the toggle 73 while the first sleeve member 71 and the second conduit 42 remain stationary; the toggle 73 rotates and falls into the first positioning groove 101 or the second positioning groove 102, so that the control assembly 7 is fixed at the first position or the second position, and unnecessary displacement of the control assembly 7 driving the second conduit 42 is avoided.

Alternatively, the first position and the second position may be two extreme positions in which the second conduit 42 and the first conduit 41 move in the first direction; for example, the first position is the extreme position of the second catheter 42 and the first catheter 41 away from the free end of the guide wire 3, and the second position is the extreme position of the second catheter 42 and the first catheter 41 wrapping the free end of the guide wire 3.

Referring to fig. 1, 2 and 3, in one embodiment, the thrombus cleaning device further comprises a communication valve 9, and the communication valve 9 may be, for example, a three-way valve; a second accommodating cavity is formed between the first catheter 41 and the guide wire 3;

the first sleeve member 71 includes a first connection tube 711 and the thrombectomy device further includes a second connection tube 90;

one end of the second connecting pipe 90 is inserted through the first connecting pipe 711 and connected to the first conduit 41, and the second connecting pipe 90 is communicated with the second accommodating cavity; the other end of the second connection pipe 90 is connected to the communication valve 9.

In this specific example, the first connection pipe 711 provided on the first sleeve member 71 is connected to the second connection pipe 90 in a socket manner; and, one end of the second connection pipe 90 is connected to the first conduit 41 and the second connection pipe 90 communicates with the second receiving chamber, and the other end of the second connection pipe 90 protrudes out of the receiving space of the housing 1 and is connected to the first port of the communication valve 9.

Optionally, the communication valve 9 is a three-way valve, a first valve port of the three-way valve is connected with the second connecting pipe 90, a second valve port of the three-way valve is used for injecting physiological saline into the second accommodating cavity, and a third valve port of the three-way valve is used for injecting contrast medium and thrombolytic agent into the second accommodating cavity.

Further, the second sleeve member 72 is provided with a avoidance groove 720 for avoiding the first connection pipe 711; the casing 1 is provided with a chute 100 for the first connecting pipe 711 to move in the first direction; the direction a shown with reference to fig. 2 is the first direction.

Referring to fig. 1, 2 and 3, in one embodiment, the driving assembly 2 includes a motor 21, and the motor 21 may drive the guide wire 3 to rotate;

a damping sleeve 8 is arranged between the motor 21 and the guide wire 3; the connecting end of the guide wire 3 is sleeved at one end of the damping sleeve 8, and the output shaft of the motor 21 is sleeved at the other end of the damping sleeve 8.

In this specific example, the damping sleeve 8 can make the motor 21 drive the guide wire 3 to rotate more stably, so as to prevent the guide wire 3 from shaking during the rotation process. Furthermore, the damping sleeve 8 prevents liquid from entering the motor 21. Alternatively, the damping sleeve 8 is made of rubber material.

Referring to fig. 1, 2 and 3, in one embodiment, the driving assembly 2 further includes a power supply device 22 and a display 23, the motor 21 and the display 23 are respectively electrically connected to the power supply device 22, and a display screen of the display 23 is exposed out of the accommodating space of the housing 1; the display 23 is configured to: for displaying the voltage value and/or the current value of the power supply device 22 via its display screen.

In this specific example, the operator can observe the voltage value and/or the current value of the power supply device 22 through the display screen of the display 23, thereby facilitating the operator to grasp the operation state of the drive assembly 2.

In addition, the driving assembly 2 further comprises a control button 24 exposed out of the accommodating space of the housing 1, and the control button 24 is electrically connected with the motor 21 to control the starting or the closing of the motor 21.

Referring to fig. 7, in one embodiment, the power device 22 includes a power module 220, a first voltage conversion module 221, a second voltage conversion module 222, a third voltage conversion module 223, a switch module 224, and a power detection module 225;

the output end of the power module 220 is connected with a first branch and a second branch, wherein the first branch is connected with the electric quantity detection module 225;

the second branch is connected with the first voltage conversion module 221, the first voltage conversion module 221 is connected with the second voltage conversion module 222 and the third voltage conversion module 223 respectively, the second voltage conversion module 222 and the third voltage conversion module 223 are connected with the switch module 224, and the switch module 224 is connected with the motor 21.

The circuit structure of the power module 220 is shown in fig. 8 a.

The circuit structure of the first voltage conversion module 221 is shown in fig. 8b, and includes a chip U4, resistors R2, R4, R5, an inductor L1, capacitors C5, C6, C7, and a diode D1; the first voltage conversion module 221 can boost the voltage of the power supply module 220 (battery) to 12V.

The circuit structure of the second voltage conversion module 222 is shown in fig. 8C, and includes a chip U2, and capacitors C1 and C3; the second voltage conversion module 222 is capable of reducing the voltage output from the first voltage conversion module 221 to 9V; when the motor 21 is controlled to rotate by the switching module 224 at a voltage of 9V, the guide wire 3 can be brought to a high rotational speed, for example 4300r/min.

The circuit structure of the third voltage conversion module 223 is shown in fig. 8d, and includes a chip U3, and capacitors C2 and C4; the third voltage conversion module 223 is capable of reducing the voltage output from the first voltage conversion module 221 to 6V; the rotation of the motor 21 is controlled by the switching module 224 at a voltage of 6V, which enables the guide wire 3 to reach a low rotational speed, for example 2800r/min.

The circuit structure of the switch module 224 is shown in fig. 8 e.

The circuit structure of the electric quantity detection module 225 is shown in fig. 8f, and includes a voltage stabilizing tube ZD1, resistors R6, R7, R8, R10, R9, R11, a voltage comparator U5, a capacitor C8, switching tubes Q1, Q2, a red LED lamp and a blue LED lamp; when the voltage is higher than 7V, the blue LED lamp emits light; when the voltage is lower than 7V, the red LED lamp emits light, and an alarm function is achieved.

Referring to fig. 9, the power supply device 22 further includes a selection key 226 and an indication lamp 227; the select key 226 has two selectable segments, the first segment having a voltage of 6V and the second segment having a voltage of 9V. When the voltage is higher than 7V, the blue LED lamp contained in the indicator lamp 227 emits light; when the voltage is lower than 7V, the red LED lamp contained in the indicator lamp 227 emits light, so that an alarm function is achieved.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

While certain specific embodiments of the application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

1. A thrombi removal device, comprising:

a housing (1), wherein an accommodating space is formed in the housing (1);

a driving assembly (2), wherein the driving assembly (2) is arranged in the accommodating space;

the guide wire (3), the connecting end of the guide wire (3) is connected with the driving component (2), and the driving component (2) can drive the guide wire (3) to rotate; the free end of the guide wire (3) far away from the driving assembly (2) is exposed out of the accommodating space;

a first catheter (41), wherein the first catheter (41) is sleeved outside the guide wire (3);

the second guide pipe (42) is coaxially sleeved outside the first guide pipe (41), and a first accommodating cavity is formed between the second guide pipe (42) and the first guide pipe (41); the second conduit (42) is provided with a suction inlet (420), and the suction inlet (420) is communicated with the first accommodating cavity;

a suction device (5), the suction device (5) being connected to the first accommodation chamber;

the driving assembly (2) drives the guide wire (3) to rotate so as to destroy thrombus and form thrombus fragments, and the thrombus fragments enter the first accommodating cavity through the suction inlet (420) and are sucked out by the suction device (5).

2. The thrombi removal device according to claim 1, further comprising an adapter (6), said adapter (6) having at least a first swivel port and a second swivel port, said first swivel port communicating with said first receiving cavity, said second swivel port communicating with said aspiration device (5);

the thrombus fragments enter the first accommodation cavity through the suction inlet (420) and are sucked out by the suction device (5) through the adapter (6).

3. The thrombectomy device according to claim 1 or 2, wherein the aspiration device (5) comprises an aspiration barrel (51), an aspiration shaft (52) and an aspiration catheter (53);

the interior of the suction cylinder (51) is provided with a hollow cavity, and the suction cylinder (51) is provided with a bottom wall and an opening part which are oppositely arranged;

one end of the suction conduit (53) is communicated with the first accommodating cavity, and the other end of the suction conduit is communicated with the hollow cavity of the suction cylinder (51) through the bottom wall of the suction cylinder (51);

the partial structure of the suction rod (52) is arranged in the hollow cavity of the suction cylinder (51) through the opening part of the suction cylinder (51), and the suction rod (52) is configured to: during the movement of the suction rod (52) away from the bottom wall of the suction cylinder (51), the air pressure in the hollow chamber of the suction cylinder (51) gradually decreases.

4. A thrombus removal device according to claim 3, wherein the inner side wall of the suction tube (51) is provided with a first clip (501) at a position corresponding to the opening, and the side wall of the suction rod (52) is provided with a plurality of second clips (502) distributed in the axial direction; when the first clamp (501) is abutted against the second clamp (502), the position of the suction rod (52) is fixed relative to the suction cylinder (51).

5. The thrombi removing device according to claim 1, wherein a support rib (43) is provided in said first accommodation chamber, one end of said support rib (43) is connected to an outer wall of said first conduit (41), and the other end is connected to an inner wall of said second conduit (42).

6. The thrombectomy device of claim 5, wherein a plurality of sets of support ribs are disposed within the first receiving chamber at intervals along the axial direction of the second conduit (42), and wherein any set of support ribs comprises at least three of the support ribs (43).

7. The thrombectomy device of claim 6, wherein at least three of said ribs (43) are uniformly distributed along a circumferential direction of said second conduit (42).

8. The thrombectomy device according to any one of claims 5-7, wherein the second catheter (42) has a first end proximal to the free end of the guidewire (3) and a second end distal to the free end of the guidewire (3);

the suction inlet (420) is arranged near the first end, and the suction device (5) is communicated to the first accommodating cavity near the second end.

9. The thrombectomy device according to claim 1, wherein the outer surface of the guidewire (3) is provided with a covering film (30) wrapped therearound.

10. The thrombi elimination device according to claim 1, wherein said second catheter (42) comprises a body portion (421) and a connecting portion (422), said connecting portion (422) being connected with one end of said body portion (421); the caliber of the connecting part (422) is gradually reduced along the direction away from the body part (421), and the end part of the connecting part (422) away from the body part (421) is fixedly connected with the first conduit (41).

11. The thrombi removal device of claim 1, further comprising a control assembly (7), said control assembly (7) being connected to said second conduit (42); the control assembly (7) can drive the second guide tube (42) and the first guide tube (41) to move along a first direction so as to enable the second guide tube (42) and the first guide tube (41) to be close to or far away from the free end of the guide wire (3).

12. The thrombectomy device of claim 11, wherein the control assembly (7) comprises a first sleeve member (71) and a second sleeve member (72), a portion of the second catheter (42) fixedly sleeved within the first sleeve member (71);

the first sleeve member (71) is partially sleeved in the second sleeve member (72), and a toggle button (73) is connected to the outer side wall of the second sleeve member (72); the shell (1) is provided with a first positioning groove (101) and a second positioning groove (102), and the first positioning groove (101) and the second positioning groove (102) are distributed along a first direction;

the second sleeve member (72) can drive the first sleeve member (71) to move along a first direction, and the second sleeve member (72) can rotate relative to the first sleeve member (71);

when the second sleeve member (72) drives the first sleeve member (71) to move to a first position, the second sleeve member (72) rotates and enables the toggle button (73) to enter the first positioning groove (101) so as to enable the control assembly (7) to be fixed at the first position;

when the second sleeve member (72) drives the first sleeve member (71) to move to a second position, the second sleeve member (72) rotates and enables the toggle button (73) to enter the second positioning groove (102), so that the control assembly (7) is fixed at the second position.

13. The thrombi elimination device according to claim 12, wherein said thrombi elimination device further comprises a communication valve (9); a second accommodating cavity is formed between the first catheter (41) and the guide wire (3);

the first sleeve member (71) comprises a first connection tube (711), the thrombi-clearing device further comprising a second connection tube (90);

one end of the second connecting pipe (90) penetrates through the first connecting pipe (711) and is connected to the first conduit (41), and the second connecting pipe (90) is communicated with the second accommodating cavity; the other end of the second connecting pipe (90) is connected to the communication valve (9).

14. The thrombectomy device according to claim 1, wherein the drive assembly (2) comprises a motor (21), the motor (21) being operable to drive the guidewire (3) in rotation;

a damping sleeve (8) is arranged between the motor (21) and the guide wire (3); the connecting end of the guide wire (3) is sleeved at one end of the damping sleeve (8), and the output shaft of the motor (21) is sleeved at the other end of the damping sleeve (8).

15. The thrombi elimination device according to claim 14, wherein said drive assembly (2) further comprises a power supply device (22) and a display (23), said motor (21) and said display (23) are electrically connected with said power supply device (22), respectively, and a display screen of said display (23) is exposed outside an accommodation space of said housing (1); the display (23) is configured to: for displaying the voltage value and/or the current value of the power supply device (22) through a display screen thereof.

16. The thrombectomy device of claim 15, wherein the power device (22) comprises a power module (220), a first voltage conversion module (221), a second voltage conversion module (222), a third voltage conversion module (223), a switching module (224), and a power detection module (225);

the output end of the power supply module (220) is connected with a first branch and a second branch, wherein the first branch is connected with the electric quantity detection module (225);

the second branch is connected with the first voltage conversion module (221), the first voltage conversion module (221) is respectively connected with the second voltage conversion module (222) and the third voltage conversion module (223), the second voltage conversion module (222) and the third voltage conversion module (223) are both connected with the switch module (224), and the switch module (224) is connected with the motor (21).