CN215458440U

CN215458440U - Mechanism and device for removing blood vessel caking

Info

Publication number: CN215458440U
Application number: CN202121590436.2U
Authority: CN
Inventors: 李培尚; 吴巍巍; 李静
Original assignee: Jiangsu Medeno Medical Group Co ltd
Current assignee: Minder Medical Technology Group Co., Ltd.
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-01-11
Anticipated expiration: 2031-07-13

Abstract

The utility model relates to the field of medical instruments, in particular to a mechanism and a device for removing vascular clots. The device comprises a core wire and an arch-shaped element, wherein the core wire is suitable for rotating around a central shaft thereof under the action of an external force; the arch-shaped piece is provided with a furled state and an arch-shaped state, one end of the arch-shaped piece is connected with the core wire at a set position, the other end of the arch-shaped piece is suitable for moving towards the set position under the action of external force, so that the arch-shaped piece is converted into the arch-shaped state from the furled state, and the arch-shaped piece is driven by the core wire to crush the agglomerated materials. When the arch-shaped part is in an arch-shaped state, the arch-shaped part is in all-dimensional contact with the caking, the arch-shaped part can crush and remove the caking at the focus in a large area, the caking does not need to be operated after entering the thrombus taking side hole, and the removal efficiency is high. And for the plaque attached to the vessel wall, the arch-shaped piece can be directly attached to the vessel wall to remove the plaque without being blocked by any object.

Description

Mechanism and device for removing blood vessel caking

Technical Field

The utility model relates to the field of medical instruments, in particular to a mechanism and a device for removing vascular clots.

Background

Vascular clots such as thrombi, plaques, etc., when deposited or attached to the inner wall of the vessel, can restrict the lumen size, reduce the flow of blood, and may lead to insufficient blood supply, severely impair tissue function, or even death.

In the prior art, for example, chinese patent document CN109199527A discloses a mechanical thrombus removal device, in which a related embolectomy head is a hollow member and has a proximal end and a distal end, the proximal end of the embolectomy head includes at least one side embolectomy hole, and preferably, the proximal end of the embolectomy head has a circular structure; the far end of the bolt taking head is of a conical curved surface structure and is provided with at least one inclined hole and a top hole.

In the patent document, the thrombus taking side hole is used as a path for the thrombus to enter the thrombus taking head, the thrombus breaking cutter is positioned in the inner cavity of the thrombus taking head, the thrombus can be broken by the thrombus breaking cutter after the thrombus enters the thrombus taking side hole, the thrombus breaking cutter cannot be fully contacted with the thrombus, and the thrombus breaking efficiency is limited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mechanism and a device for removing vascular clots, and aims to solve the problems that in a thrombus removal device in the prior art, thrombus can be broken by a thrombus breaking cutter only after entering a thrombus removal side hole, the thrombus breaking cutter cannot be in full contact with the thrombus, and the thrombus breaking efficiency is limited.

The technical scheme of the utility model is as follows:

a vascular lumping device comprises a core wire and an arch member, wherein the core wire is suitable for rotating around the central shaft thereof under the action of external force; the arch-shaped piece is provided with a furled state and an arch-shaped state, one end of the arch-shaped piece is connected with the core wire at a set position, the other end of the arch-shaped piece is suitable for moving towards the set position under the action of external force, so that the arch-shaped piece is converted into the arch-shaped state from the furled state, and the arch-shaped piece is driven by the core wire to crush the agglomerated materials.

Preferably, the core wire comprises a connecting part and a guide part connected with the connecting part, the connecting part and the arching piece are connected at the set position, and the guide part is suitable for driving the connecting part to rotate under the action of external force.

Preferably, the connection part includes: the spherical part is arranged at one end of the connecting part far away from the guide part; the conical part is arranged at one end of the connecting part close to the guide part and is connected with the arch piece.

Preferably, a plurality of the arch members are provided around an outer wall of the guide portion.

Preferably, the guide portion is of a rod-shaped structure, and the arch member is long and arranged along the axial direction of the guide portion.

Preferably, the arch member is a tubular structure, a plurality of openings are arranged on the arch member at intervals, and the guide part penetrates through the lumen of the arch member.

Preferably, a plurality of the openings are arranged in an elongated structure.

Preferably, the vascular lumping mechanism further comprises a sleeve, the sleeve is sleeved on the guide part, one end of the sleeve is connected with the arch-shaped piece, and the other end of the sleeve is suitable for acting towards the connecting part under the action of external force.

Preferably, the sleeve and the guide part are in transition fit, and the transition fit satisfies that the sleeve and the guide part are relatively static when no external force acts, and can slide relatively under the action of the external force.

Preferably, the vascular clot removal mechanism further comprises a catheter which is sleeved outside the sleeve and forms a gap for absorbing broken clots or injection solution with the outer wall of the sleeve.

Preferably, the catheter has a clearance state and a protection state; when the conduit is in a clearing state, the conduit is suitable for moving away from the connecting part under the action of external force and exposing the arch-shaped piece; when the conduit is in a protection state, the conduit is suitable for moving towards the connecting part under the action of external force and coating the arch-shaped piece.

A device with a vascular clot removal mechanism comprises the vascular clot removal mechanism.

The technical scheme of the utility model has the following advantages:

1. the utility model relates to a mechanism for removing vascular agglomerations, which comprises a core wire and an arch-shaped piece, wherein the core wire is suitable for rotating around a central shaft under the action of external force; the arch-shaped piece has a furled state and an arch-shaped state, one end of the arch-shaped piece is connected with the core wire at a set position, and the other end of the arch-shaped piece is suitable for moving towards the set position under the action of external force, so that the arch-shaped piece is converted into the arch-shaped state from the furled state. The arching element is switched back and forth between a furled state and an arching state through the action of external force, and the action of external force can adopt any power device or transmission device in the prior art.

When the device is used initially, the arch-shaped piece is in a furled state, so that the size of the whole blood vessel clot removing mechanism is small, a lesion area is reached, the arch-shaped piece is switched to an arch-shaped state under the action of external force after the device reaches the lesion area, then the core wire rotates around the central shaft of the core wire under the driving of the external force and drives the arch-shaped piece in the arch-shaped state to act, the arch-shaped piece is driven by the core wire to crush clots, the arch-shaped piece is in all-dimensional contact with the clots in the arch-shaped state, the arch-shaped piece can crush and remove the clots in the lesion area in a large area, the operation is not needed after the clots enter a plug taking side hole, and the removing efficiency is high. And for the plaque attached to the vessel wall, the arch-shaped piece can be directly attached to the vessel wall to remove the plaque without being blocked by any object.

2. According to the mechanism for removing the blood vessel caking, the guide pipe is sleeved outside the sleeve pipe, and a gap for absorbing the crushed caking or the injection solution is formed between the guide pipe and the outer wall of the sleeve pipe; the catheter has a clearance state and a protection state; when the conduit is in a cleaning state, the conduit is suitable for moving away from the connecting part under the action of external force and exposing the arch-shaped piece; when the conduit is in a protection state, the conduit is suitable for moving towards the connecting part under the action of external force and covering the arch piece.

When the catheter is initially used, the catheter is in a protection state, the catheter covers the arched piece in a furled state and reaches a focus area, and the influence or damage of the arched piece on other parts of the blood vessel is reduced through the coating effect of the catheter; after reaching the focus area, the catheter moves away from the connecting part and exposes the arch part, so that the arch part is switched to an arch state conveniently, and broken caking matters or injection solution are absorbed through a gap formed between the catheter and the outer wall of the sleeve.

When the guide wire is needed, the guide wire can also pass through a gap formed between the catheter and the outer wall of the sleeve through the guide wire, and other channels for the guide wire to pass through do not need to be arranged on the vascular clot removing mechanism.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a vascular clot removal mechanism of the present invention;

FIG. 2 is a schematic view of the construction of the core wire shown in FIG. 1;

FIG. 3 is a schematic view of the vascular clot removal mechanism of the present invention in a collapsed state;

FIG. 4 is a schematic view of the vascular clot removal mechanism of the present invention in an arched state;

fig. 5 is a schematic view of a second embodiment of the arch of the present embodiment.

Fig. 6 is a schematic structural view of a cross-sectional view at a-a shown in fig. 1.

Description of reference numerals:

1-core filament; 2-an arch piece; 3-a connecting part; 4-a guide; 5-a spherical portion; 6-a conical section; 7-opening a hole; 8-a sleeve; 9-clearance; 10-a catheter.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example one

The vascular clot removal mechanism of the embodiment, as shown in fig. 1-6, comprises a core wire 1 and an arch member 2, wherein the core wire 1 is suitable for rotating around the central shaft thereof under the action of external force; the arch-shaped member 2 has a furled state and an arch-shaped state, one end of the arch-shaped member is connected with the core wire 1 at a set position, and the other end of the arch-shaped member is suitable for moving towards the set position under the action of external force, so that the arch-shaped member 2 is converted into the arch-shaped state from the furled state. The arching element 2 is switched back and forth between a furled state and an arching state by external force action, and the caked objects are removed, wherein the external force action can adopt any power device or transmission device in the prior art. In the embodiment, the power device used for driving the core wire 1 to rotate around the central shaft is a micro motor; the external force for driving the other end of the arching element 2 to move towards the set position can be manually pushed or pushed by an air cylinder, a micro motor and the like.

It should be noted that the "set position" in this embodiment is introduced for the purpose of clearly describing the technical solution of this embodiment, is a certain position in a three-dimensional space, and can be set according to actual use requirements.

When the device is initially used, the arch piece 2 is in a furled state, so that the whole blood vessel clot removing mechanism is small in size so as to reach a focus area, and is switched into an arch state under the action of external force after reaching the focus area, then the core wire 1 rotates around a self central shaft under the driving of the external force and drives the arch piece 2 in the arch state to act, the arch piece 2 is driven by the core wire 1 to crush clots, the arch piece 2 is in all-dimensional contact with the clots in the arch state, the arch piece 2 can crush and remove the clots at the focus in a large area, the clots do not need to enter a plug taking side hole and then operate, and the removing efficiency is high. And for the plaque attached to the vessel wall, the arch-shaped part 2 can be directly attached to the vessel wall to remove the plaque without being blocked by any object.

The core wire 1 comprises a connecting part 3 and a guide part 4 connected with the connecting part 3, the connecting part 3 and the arch piece 2 are connected at the set position, and the guide part 4 is suitable for driving the connecting part 3 to rotate under the action of external force; by dividing the core wire 1 into the connecting portion 3 and the guide portion 4, the structure and size thereof can be designed according to the function and effect thereof.

Specifically, the connection portion 3 includes: a spherical part 5 and a conical part 6, the spherical part 5 being arranged at an end of the connecting part 3 remote from the guiding part 4; the tapered portion 6 is provided at an end of the connecting portion 3 close to the guide portion 4, and is connected to the rising member 2. In this embodiment, the connecting portion 3 is cylindrical, and the spherical portion 5 can reduce resistance and prevent damage to other parts of the blood vessel during the process of extending the mechanism of this embodiment into the focal zone. The conical portion 6 enables the whole connecting portion 3 to be structurally good, can bear a larger acting force applied by the arching element 2, and the arching element 2 is connected with the conical portion 6, so that the radial size of the whole connecting portion 3 is smaller, and the mechanism can conveniently reach a focus area.

Specifically, the guide portion 4 is a rod-shaped structure, and the arch member 2 is long and is disposed along the axial direction of the guide portion 4. In the present embodiment, the guide portion 4 has a circular cross section, but may have a polygonal shape or the like.

As a first embodiment of the arch part 2, a plurality of arch parts 2 are arranged around the outer wall of the guide part 4. The arch member 2 may be in a filament-like structure, and when the arch member 2 is in the folded state, the plurality of arch members 2 are in a linear state, and the length of the plurality of arch members 2 is along the axial direction of the guide portion 4.

As shown in fig. 5, as a second embodiment of the arch member 2, the arch member 2 is a tubular structure, a plurality of openings 7 are arranged at intervals, and the guide portion 4 passes through the lumen of the arch member 2, in this embodiment, the arch member 2 as a whole is convenient for installation and removal. The plurality of the openings 7 are arranged in a strip-shaped structure, the strip shape can be rectangular or oval, and the like, and the whole body is in a strip shape, so that the detailed description is omitted.

Further, the vascular clot removal mechanism further comprises a sleeve 8, wherein the sleeve 8 is sleeved on the guide part 4, one end of the sleeve 8 is connected with the arch-shaped element 2, and the other end of the sleeve 8 is suitable for acting towards the connecting part 3 under the action of external force.

A sleeve 8 is fitted over the guide 4 and has one end connected to the arch 2 and the other end adapted to be moved by an external force towards the connecting portion 3. The sleeve 8 and the guide part 4 are in transition fit, and the tolerance control of the transition fit needs to achieve the condition that the sleeve 8 and the guide part 4 are relatively static when no external force acts, and can slide relatively under the action of the external force.

Specifically, when external force acts on the sleeve 8, one end of the sleeve 8 acts towards the connecting part 3, the guide part 4 and the sleeve 8 slide relatively, so that the arching element 2 is switched from a furled state to an arching state, and then the external force is removed, namely the external force does not act on the sleeve 8 any more, at this time, due to the transition fit mode between the sleeve 8 and the guide part 4, the sleeve 8 and the guide part 4 are relatively static, and the arching element 2 keeps arching; similarly, when the arching element 2 needs to be switched from the arching state to the furled state, the external force continues to act on the sleeve 8, so that the sleeve 8 moves away from the connecting part 3.

Because above-mentioned cooperation relation has between sleeve pipe 8 and the guide part 4, the mechanism of cleaing away vascular caking thing of this embodiment can realize arching the state switching of piece 2 through manual promotion sleeve pipe 8, need not set up extra power supply, and extra power supply means motor, air supply power etc. can lead to whole mechanism structure more complicated, the cost is higher.

On one hand, the sleeve 8 plays a role in power transmission, namely, external force can indirectly act on the arch-shaped piece 2 by acting on the sleeve 8; on the other hand, through setting up sleeve pipe 8 to can adjust sleeve pipe 8's structural dimension according to the in-service use demand, conveniently reach the focus district at specific position, promoted utility model's the suitability of cleaing away vascular caking thing mechanism.

Further, as shown in fig. 1 and 6, the mechanism for removing blood vessel clots of this embodiment further includes a guide tube 10, which is sleeved outside the sleeve 8 and forms a gap 9 for absorbing broken clots or injection solution with the outer wall of the sleeve 8. In this embodiment, the sleeve 8 and the duct 10 are both cylindrical and are clearance fitted to form said gap 9.

The catheter 10 has a clearance condition and a protection condition; when the conduit 10 is in a clearing state, the conduit 10 is suitable for moving away from the connecting part 3 under the action of external force and exposing the arch-shaped piece 2; when the conduit 10 is in a protection state, the conduit 10 is suitable for moving towards the connecting part 3 under the action of external force and covering the arch part 2.

When the device is initially used, the catheter 10 is in a protection state, the catheter 10 covers the arched piece 2 in a furled state and reaches a focus area, and the influence or damage of the arched piece 2 on other parts of the blood vessel is reduced through the coating effect of the catheter 10; after reaching the lesion area, the catheter 10 is moved away from the connection part 3 and exposes the arching member 2, so that the arching member 2 is switched to an arching state, and broken agglomerates or injection solution is absorbed through a gap 9 formed between the catheter 10 and the outer wall of the sleeve 8.

When the guide wire is needed, the guide wire can also pass through the gap 9 formed between the catheter 10 and the outer wall of the sleeve 8 through the guide wire, and other channels for the guide wire to pass through are not needed to be arranged on the vascular clot removing mechanism, which needs to be explained, the guide wire is a device used for guiding the apparatus in the prior art so as to enable the apparatus to accurately reach the focus area.

Example two

The device with the vascular clot removal mechanism of the embodiment comprises the vascular clot removal mechanism of the first embodiment and the second embodiment.

The device with the vascular clot removal mechanism of this embodiment further comprises a first drive assembly by which the arching member 2 is switched back and forth between the collapsed state and the arching state.

The device with the mechanism for removing the vascular clots further comprises a second driving assembly, and the core wire 1 is driven to rotate through the second power assembly so as to drive the arch piece 2 to remove the clots.

The specific structures and implementation manners of the first driving assembly and the second driving assembly are not the inventive points of the present invention, and are not described again.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. A vascular lumping device, which is characterized by comprising a core wire (1) and an arch member (2), wherein the core wire (1) is suitable for rotating around the central shaft thereof under the action of external force;

the arch-shaped piece (2) is in a furled state and an arch-shaped state, one end of the arch-shaped piece is connected with the core wire (1) at a set position, the other end of the arch-shaped piece is suitable for moving towards the set position under the action of external force, so that the arch-shaped piece (2) is converted into the arch-shaped state from the furled state, and the arch-shaped piece (2) is driven by the core wire (1) to crush the caking objects.

2. The mechanism for removing vascular clots according to claim 1, wherein the core wire (1) comprises a connecting portion (3) and a guiding portion (4) connected to the connecting portion (3), the connecting portion (3) and the arching member (2) being connected in the set position, the guiding portion (4) being adapted to rotate the connecting portion (3) under an external force.

3. Mechanism according to claim 2, characterized in that said connection portion (3) comprises:

a spherical part (5) arranged at one end of the connecting part (3) far away from the guide part (4);

and the conical part (6) is arranged at one end of the connecting part (3) close to the guide part (4) and is connected with the arch piece (2).

4. A vascular lumping mechanism according to claim 2, wherein a plurality of the arch members (2) are provided around the outer wall of the guide portion (4).

5. The mechanism for removing vascular clots according to claim 4, wherein the guide portion (4) is of a rod-like configuration, and the arch member (2) is elongate and is disposed axially of the guide portion (4).

6. The vascular clot removal mechanism of claim 2, wherein the arch member (2) is a tubular structure having a plurality of spaced openings (7), and the guide portion (4) extends through a lumen of the arch member (2).

7. The mechanism of claim 6, wherein a plurality of said openings (7) are arranged in an elongated configuration.

8. A vascular lumping mechanism according to any one of claims 2-7, further comprising a sleeve (8), wherein the sleeve (8) is fitted over the guide portion (4) and has one end connected to the arching member (2) and the other end adapted to be forced towards the connecting portion (3).

9. The vascular clot removal mechanism of claim 8, wherein the sleeve (8) and the guide portion (4) are in transition fit, and the transition fit is such that the sleeve (8) and the guide portion (4) are relatively static when no external force is applied and can slide relative to each other under the action of the external force.

10. The mechanism for removing vascular clots according to claim 8, further comprising a catheter (10) which is fitted over the outside of the sleeve (8) and forms a gap (9) with the outer wall of the sleeve (8) for absorbing broken clots or injection solution.

11. Mechanism according to claim 10, characterized in that said catheter (10) has a removal condition and a protection condition;

when the conduit (10) is in a clearing state, the conduit (10) is suitable for moving away from the connecting part (3) under the action of external force and exposing the arch-shaped piece (2); when the conduit (10) is in a protection state, the conduit (10) is suitable for moving towards the connecting part (3) under the action of external force and coating the arch-shaped piece (2).

12. A device having a vascular lumping mechanism, comprising a vascular lumping mechanism as claimed in any one of claims 1 to 11.