CN114767341B

CN114767341B - Implant locking structure

Info

Publication number: CN114767341B
Application number: CN202210694550.2A
Authority: CN
Inventors: 曹淑娇
Original assignee: Lepu Medical Technology Beijing Co Ltd
Current assignee: Lepu Medical Technology Beijing Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-02
Anticipated expiration: 2042-06-20
Also published as: CN114767341A

Abstract

The invention relates to the technical field of medical instruments, in particular to an implant locking structure. The anchoring mechanism includes: the anchoring device comprises an anchoring piece and an anchoring conduit, wherein at least two clamping jaws are uniformly distributed on the inner wall of the anchoring piece along the circumferential direction, a retaining ring is fixed on the anchoring piece, and a locking area is formed between each clamping jaw and the retaining ring; the locking mechanism comprises a locking piece and a pushing conduit, the pushing conduit is suitable for pushing the locking piece to move to a locking area along the anchoring conduit, the outer diameter of the locking piece is smaller than the inner diameter of the anchoring conduit, and the outer diameter of the locking piece is matched with the inner diameter of the locking area; the claw has a natural state of extending outwards from the inner wall of the anchor and an avoidance state of retracting in the inner wall of the anchor under the pushing action of the locking piece. When the locking device is used, the locking device is pushed to the locking area through the pushing guide pipe, the locking device completes fixing relative to the anchoring device, the flexible rope is extruded and deformed, and locking is achieved under the double friction force between the locking device and the anchoring device, so that the axial tension on the flexible rope is maintained.

Description

Implant locking structure

Technical Field

The invention relates to the technical field of medical instruments, in particular to an implant locking structure.

Background

With the increasing life span of people and the increasing trend of aging of global population, the incidence rate of structural heart disease is on the trend of obvious increase, and the incidence rate of diseases of mitral valve and tricuspid valve is also odd and high, which brings great difficulty to the individual patients and families. Initially, structural heart failure and mitral and tricuspid diseases can only be treated by drug conservation, which can relieve symptoms to a certain extent but cannot change the original structural abnormality. The surgical treatment scheme through surgical thoracotomy appeared in the later 20 th century has certain requirements on the physical conditions of patients, and the risk of surgical treatment is too large for the patients with high surgical operation risks in the advanced age, so that the surgical treatment scheme is regarded as contraindication. With the development of medical device technology, various therapeutic schemes for treating structural heart failure and diseases of mitral valve and tricuspid valve through catheters have come into play. The advantages of no need of opening chest, small wound, fast recovery, better preservation of cardiac function and the like bring good news to the elderly patients who are contraindicated in surgical operations and have good effect.

The main interventional treatment methods for heart failure and mitral and tricuspid valve regurgitation diseases in the market at present are transcatheter annuloplasty and transcatheter mitral valve repair. The heart principle is that a circle of rigid material is injected around the papillary muscle section or the valve in the annular left ventricle, and then a flexible rope is used to penetrate through the rigid material and apply axial tension, so that the left ventricle and the valve are uniformly contracted, the structural focus of the heart is fundamentally solved, and the heart failure and the mitral valve and tricuspid valve regurgitation diseases are relieved and even treated. However, the locking problem of the flexible rope after applying axial tension is a technical problem in the treatment scheme, and a reliable and effective solution is not available at present.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the existing flexible rope connected with the plant is difficult to lock, thereby providing a plant locking structure.

The present invention provides an implant locking structure, comprising:

the anchoring mechanism comprises an anchoring piece and an anchoring conduit, wherein the anchoring piece is of a cylindrical structure and is coaxially fixed at one end of the anchoring conduit, at least two clamping jaws are uniformly distributed on the inner wall of the anchoring piece along the circumferential direction, a retaining ring is fixed on the inner wall of one end of the anchoring piece, which is far away from the anchoring conduit, and a locking area is formed between each clamping jaw and the retaining ring;

a locking mechanism comprising a locking member and a pushing conduit, the locking member being of a cylindrical configuration, the pushing conduit being adapted to push the locking member along the anchoring conduit to the locking region, the locking member having an outer diameter smaller than an inner diameter of the anchoring conduit to allow the flexible cord to move freely therebetween, the locking member having an outer diameter adapted to the inner diameter of the locking region to enable the flexible cord to be clamped and secured through a gap therebetween;

the claw has a natural state extending outwards from the inner wall of the anchor and an avoidance state retracting to the inner wall of the anchor under the pushing action of the locking piece.

Optionally, the anchor includes a major diameter section, a conical surface section and a minor diameter section, the major diameter section is connected with the minor diameter section through the conical surface section, the major diameter section is connected with the anchor conduit and the inner diameters of the major diameter section and the minor diameter section are equal, and the locking region is located in the minor diameter section.

Optionally, the jaw comprises:

a barrel shell secured to an outer wall of the anchor, an opening of the barrel shell extending to an inner cavity of the anchor and toward a center of the anchor;

the clamping block is installed in the barrel shell and can only slide along the axial direction of the barrel shell;

and the driving piece is fixed at the barrel bottom of the barrel shell and is suitable for driving the clamping block to move along the axial direction of the barrel shell.

Optionally, the driving member is a spring, two ends of the spring are respectively abutted against the bottom of the barrel shell and the fixture block, an end surface of the fixture block, which is close to the anchoring guide tube, is provided with an inclined surface, the inclined surface is suitable for guiding the fixture block to retract into the barrel shell under the pushing action of the locking member, a limiting member is further arranged on the barrel shell and/or the fixture block, and the limiting member is suitable for limiting an extended limit position of the fixture block so as to prevent the fixture block from falling off from the barrel shell.

Optionally, the limiting member is a protruding block fixed at an opening end of the barrel casing, the protruding block faces the inside of the barrel casing, and the protruding block is arranged corresponding to one end of the inclined plane close to the spring.

Optionally, the driving member is a linear motor, an output shaft of the linear motor coincides with or is parallel to an axis of the barrel shell, the output shaft of the linear motor is fixedly connected with the clamping block, and the linear motor is provided with a wireless module so as to be wirelessly controlled.

Optionally, the anchoring catheter is a braided mesh catheter, and at least one guide wire is reserved between the braided mesh of the braided mesh catheter and the nylon elastomer, and the guide wires are arranged along the circumferential direction of the braided mesh catheter.

Optionally, the anchoring member is provided with a tenon and a mortise, the tenon has a first state that extends outward from the cylinder wall under the natural state and is pressed and embedded in the second state of the mortise, the jaw is located one side of the mortise far away from the anchoring conduit, and the anchoring mechanism further comprises:

the limiting ring is sleeved on the anchoring piece in a clearance mode and is suitable for driving the tenon to be switched between a first state and a second state through axial movement;

and the limiting guide pipe is fixedly connected with the limiting ring and is suitable for pushing and pulling the limiting ring to move along the axial direction of the anchoring piece.

Optionally, the inner wall of the locking region is provided with a plurality of annular teeth, and the outer wall of the locking member is provided with a plurality of annular inverted teeth.

Optionally, the anchor and/or the locking element are injection molded from a rigid polymeric material.

The technical scheme of the invention has the following advantages:

1. the implant locking structure provided by the invention comprises an anchoring mechanism, wherein the anchoring mechanism comprises an anchor and an anchor catheter, and the anchor can be pushed into the heart through the anchor catheter; the locking mechanism comprises a locking piece and a pushing conduit, and the locking piece can move along the anchoring conduit through the pushing conduit; the anchoring piece is provided with a clamping jaw and a blocking ring, a locking area is formed between the clamping jaw and the blocking ring, the locking piece is driven to be switched from a natural state to an avoiding state when contacting with the clamping jaw, when the locking piece is completely arranged in the locking area, the clamping jaw returns to the natural state, and the clamping jaw is matched with the blocking ring to lock the locking block. When the flexible rope is used, the flexible rope of the implant penetrates through a gap between the locking piece and the anchoring guide pipe, the flexible rope is in a free state, when the locking piece is about to enter the anchoring piece, the flexible rope is adjusted to have target axial tension, then the locking piece is pushed to the locking area through the pushing guide pipe, the locking piece completes fixing relative to the anchoring piece, the flexible rope is extruded and deformed, and locking is achieved under double friction force between the locking piece and the anchoring piece, so that the axial tension on the flexible rope is kept. In addition, the locking block is of a simple cylindrical structure, and no anchor fluke or the like is arranged outside, so that the resistance is small when the locking block moves along the anchoring conduit, and the locking block is more convenient to operate.

2. According to the implant locking structure provided by the invention, the anchoring piece comprises the large-diameter section, the conical surface section and the small-diameter section, the locking block can smoothly enter the locking area under the guiding action of the conical surface section, and the locking block is connected with the anchoring catheter through the large-diameter section, so that the connection is simpler, and the connection firmness of the locking block can be ensured.

3. According to the implant locking structure provided by the invention, the anchoring piece is provided with the tenon and the mortise, and the anchoring mechanism further comprises the limiting ring and the limiting guide pipe. When the anchor needs to move, the limiting ring can be driven to move along the axial direction of the anchor through the limiting guide pipe, so that the tenon is in a second state and is convenient to move; when the locking piece is completely arranged in the locking area, the limiting ring can be driven by the limiting guide pipe to move axially along the anchor piece, so that the tenon is in the first state, the anchor piece is anchored at the corresponding position of the heart under the action of the tenon, and the stability of the anchor piece is further improved.

4. According to the implant locking structure provided by the invention, the inner wall of the locking area is provided with the plurality of annular teeth, the outer wall of the locking piece is provided with the plurality of annular inverted teeth, and the clamping force on the flexible rope is further ensured through the matching of the annular teeth and the annular inverted teeth, so that the locking is firmer.

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 showing the overall structure of an implant locking structure according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first jaw in the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second jaw in the embodiment of the invention;

fig. 4 is a schematic diagram of a mortise and tenon structure in the embodiment of the invention.

Description of the reference numerals:

1. an anchor; 11. a small diameter section; 12. a conical surface section; 13. a large diameter section; 14. a tenon; 15. mortise slot; 2. an anchoring catheter; 3. a claw; 31. a barrel shell; 32. a clamping block; 33. a spring; 34. a limiting member; 35. a linear motor; 4. a locking member; 5. pushing the catheter; 6. a limiting ring; 7. a limiting catheter; 8. and (4) a baffle ring.

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 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 1

One embodiment of an implant locking structure, as shown in fig. 1, comprises:

the anchoring mechanism comprises an anchoring piece 1 and an anchoring conduit 2, wherein the anchoring piece 1 is of a cylindrical structure and is coaxially fixed at one end of the anchoring conduit 2, at least two clamping jaws 3 are uniformly distributed on the inner wall of the anchoring piece 1 along the circumferential direction, a retaining ring 8 is fixed on the inner wall of one end of the anchoring piece 1, which is far away from the anchoring conduit 2, and a locking area is formed between each clamping jaw 3 and the retaining ring 8;

a locking mechanism comprising a locking member 4 and a pushing conduit 5, the locking member 4 being of a cylindrical configuration, the pushing conduit 5 being adapted to push the locking member 4 along the anchoring conduit 2 to a locking region, the locking member 4 having an outer diameter smaller than the inner diameter of the anchoring conduit 2 to enable the flexible cord to move freely therebetween, the locking member 4 having an outer diameter adapted to the inner diameter of the locking region to enable the flexible cord to be clamped and secured by a gap therebetween;

the claw 3 has a natural state of overhanging the inner wall of the anchor 1 and an escape state of retracting the inner wall of the anchor 1 under the urging action of the locking member 4.

The implant locking structure can push the anchoring piece 1 into the heart through the anchoring catheter 2, the locking piece 4 can move along the anchoring catheter 2 through the pushing catheter 5, the locking piece 4 is driven to be switched from a natural state to an avoiding state when contacting the claw 3, when the locking piece 4 is completely arranged in a locking area, the claw 3 returns to the natural state, and the claw 3 is matched with the retaining ring 8 to lock the locking block. In use, the flexible cord of the implant is passed through the gap between the locking element 4 and the anchoring catheter 2, the flexible cord is in a free state, when the locking element 4 is about to enter the anchor 1, the flexible cord is adjusted to have a target axial tension, the locking element 4 is pushed to the locking area through the pushing catheter 5, the locking element 4 completes fixation relative to the anchor 1, the flexible cord is extruded and deformed, and locking is achieved under the double friction force between the locking element 4 and the anchor, so that the axial tension on the flexible cord is maintained. In addition, because the locking block is of a simple cylindrical structure and is not externally provided with a fluke and the like, when the locking block moves along the anchoring conduit 2, the resistance is small, and the operation is more convenient.

The anchor 1 may be of a conventional cylindrical structure, but since the outer diameter of the locking element 4 is smaller than the inner diameter of the anchor conduit 2 and needs to be adapted to the inner diameter of the locking area, the inner diameter of the anchor conduit 2 needs to be larger than the inner diameter of the anchor 1, which results in a step formed at the joint of the two, and the locking element 4 may be caught at the step when moving to the joint of the two, which makes the operation difficult. Thus, there is provided an improved embodiment of the anchor 1, wherein the anchor 1 comprises a large diameter section 13, a tapered section 12 and a small diameter section 11, the large diameter section 13 is connected with the small diameter section 11 through the tapered section 12, the large diameter section 13 is connected with the anchor catheter 2 and has the same inner diameter, and the locking area is located on the small diameter section 11. The latch segment can smoothly enter the locking region through the guiding action of the conical section 12, and is connected with the anchoring catheter 2 through the large-diameter section 13, so that the connection is simpler, and the connection firmness is guaranteed more favorably.

It should be understood that the anchoring catheter 2 needs to have a bendable characteristic and a certain rigidity to be able to achieve the penetrating purpose, which is a common structure in the medical industry and will not be described in detail. There is provided a preferred anchoring catheter 2 configuration: the anchoring catheter 2 is a woven mesh catheter, at least one guide wire is reserved between the woven mesh and the nylon elastomer of the woven mesh catheter, and the guide wires are arranged along the circumferential direction of the woven mesh catheter. The adjustable bending of the mesh-woven catheter is realized through the guide wire. Two guide wires can be arranged to realize bidirectional bending of the mesh-knitted catheter. Wherein, the mesh grid pipe comprises mesh grid pipe body and head end limit structure, and both connected modes do not do the injecion, can splice, also can realize with the welding of head end limit structure through the part of pipe intermediate level mesh grid. The material of the guide wire can be one or more mixed materials of PTFE, PEBAX, TPU and PEK.

Specifically, the anchor 1 and the anchor catheter 2 may be connected by a hook connection, a clip connection, or a noose connection.

In particular, the jaw 3 comprises:

a barrel shell 31 fixed to an outer wall of the anchor 1, an opening of the barrel shell 31 extending to an inner cavity of the anchor 1 and toward a center of the anchor 1;

a latch 32 installed in the tub shell 31 and slidable only in an axial direction of the tub shell 31;

and the driving part is fixed at the bottom of the barrel shell 31 and is suitable for driving the fixture block 32 to move along the axial direction of the barrel shell 31.

It should be noted that the driving element herein may drive the latch 32 to reciprocate, or may drive only the latch 32 to move in one direction.

Two preferred configurations are provided herein:

first, as shown in fig. 2, the driving element is a spring 33, two ends of the spring 33 respectively abut against the bottom of the barrel shell 31 and the latch 32, an end surface of the latch 32 close to the anchoring conduit 2 is provided with an inclined surface, the inclined surface is suitable for guiding the latch 32 to retract into the barrel shell 31 under the pushing action of the locking element 4, the barrel shell 31 and/or the latch 32 are further provided with a limiting element 34, and the limiting element 34 is suitable for limiting the extended limit position of the latch 32 to prevent the latch 32 from falling off from the barrel shell 31.

Above-mentioned jack catch 3 structure is for structures such as elastic rubber piece, and when it was in natural state, for rigid contact between locking piece and the jack catch 3, it is more reliable to the spacing of jack catch 3 like this.

Specifically, the structure of the limiting member 34 is not specifically limited, a closed sliding groove may be formed in the inner wall of the barrel shell 31, a protruding block is arranged on the clamping block 32, the protruding block is arranged in the closed sliding groove, and the protruding block is limited by the end of the closed sliding groove. Here, a structure of the limiting member 34 is provided with a simpler structure, the limiting member 34 is a protrusion fixed at the open end of the barrel shell 31, the protrusion faces the inside of the barrel shell 31, and the protrusion is disposed at one end of the spring 33 corresponding to the inclined surface. When the latch 32 extends out for a certain length, the end of the inclined surface close to the spring 33 will contact the protrusion, thereby completing the position limitation.

Secondly, as shown in fig. 3, the driving member is a linear motor 35, an output shaft of the linear motor 35 is overlapped or parallel to an axis of the tub shell 31, and the output shaft of the linear motor 35 is fixedly connected to the latch 32. The latch 32 is driven to reciprocate by the linear motor 35, and the linear motor 35 is provided with a wireless module to be wirelessly controlled. When the wireless control linear motor 32 is used, the linear motor 35 is controlled to act wirelessly, so that the fixture block 32 is switched between a natural state and an avoiding state.

As an improved embodiment of the anchoring mechanism, as shown in fig. 1 and 4, the anchoring member 1 is provided with a tenon 14 and a mortise 15, the tenon 14 has a first state of extending outside the cylinder wall in a natural state and a second state of being pressed and embedded in the mortise 15, the claw 3 is located on one side of the mortise 15 away from the anchoring conduit 2, and the anchoring mechanism further comprises:

the spacing ring 6 is sleeved on the anchor 1 in a clearance mode and is suitable for driving the tenon 14 to switch between the first state and the second state through axial movement;

and the limiting guide pipe 7 is fixedly connected with the limiting ring 6 and is suitable for pushing and pulling the limiting ring 6 to move along the axial direction of the anchoring piece 1.

When the anchor 1 needs to move, the limiting ring 6 can be driven to move along the axial direction of the anchor 1 through the limiting guide pipe 7, so that the tenon 14 is in the second state and is convenient to move; when the locking element 4 is completely placed in the locking area, the limiting ring 6 can be driven to move axially along the anchoring element 1 through the limiting conduit 7, so that the tenon 14 is in the first state, and the anchoring element 1 is anchored in the corresponding position of the heart under the action of the tenon 14, thereby further improving the stability of the anchoring element 1.

Specifically, the tenon 14 and the mortise slot 15 are in a T shape. As an alternative embodiment, the shape of the tenon 14 and mortise slot 15 may also be oval or triangular, etc.

Aiming at the improved structure of the anchoring mechanism, the anchoring piece 1 is formed by sequentially performing laser cutting and heat setting on a nickel-titanium tube, and the stability of the tenon 14 in the first state is favorably maintained.

As another improved embodiment of the anchoring structure, the inner wall of the locking area is provided with a plurality of annular teeth, and the outer wall of the locking member 4 is provided with a plurality of annular inverted teeth. The clamping force to the flexible rope is further ensured through the matching of the annular teeth and the annular inverted teeth, so that the flexible rope is locked more firmly.

In view of the above improved embodiment of the anchor 1, the anchor 1 and/or the locking member 4 are injection molded from a hard polymer material, which makes the processing easier and more convenient.

It will be appreciated that no connection is required between the locking member 4 and the push conduit 5, and that the push conduit 5 need only contact the locking member 4 to push the locking member 4 along the anchor conduit 2 to the locking region.

It will be appreciated that the outer diameter of the locking element 4 is adapted to the inner diameter of the locking area, i.e. equal or the outer diameter of the locking element 4 is slightly smaller than the inner diameter of the locking area, so that the flexible cord can be locked. Of course, the three dimensions of the inner diameter of the anchor catheter 2, the outer diameter of the locking element 4 and the inner diameter of the locking area need to be designed according to the specific thickness of the flexible cord so that the difference between the inner diameter of the anchor catheter 2 and the outer diameter of the locking element 4 is larger than the diameter of the flexible cord and the difference between the inner diameter of the locking area and the outer diameter of the locking element 4 is smaller than the diameter of the flexible cord.

It should be noted that the structure of the present invention is used to lock the flexible string connected to the implant, but the flexible string may be a wire or a tube. The wire can be one or a mixture of polyester, PI, PE, PTFE, nylon and other materials; filaments include, but are not limited to, PEEK, PEK, PA; the tubing can be TPU, PVC, LDPE, PI, PEBAX, PA, and the like.

In addition, the implant locking system of the present application can be delivered into the left ventricle from the apex of the heart; it may also be delivered from the aorta into the left ventricle.

Based on the above embodiments, the operation of the implant locking structure of the present invention is as follows:

1) the flexible rope is penetrated in the anchor 1, the tenon 14 is in a second state, and the anchor 1 is pushed to move to a required fixing position through the anchor conduit 2;

2) placing the locking element 4 in the anchoring duct 2 and pushing it through the pushing duct 5 to the conical section 12 of the anchor 1;

3) lifting the flexible rope to enable the axial tension on the flexible rope to reach a target value;

4) the locking piece 4 is continuously pushed to the locking area of the anchoring piece 1 through the pushing conduit 5, the locking piece 4 is locked under the action of the clamping jaws 3 and the retaining ring 8, and the flexible rope is locked under the double friction force action of the locking piece 4 and the inner wall of the locking area.

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 therefrom are within the scope of the invention.

Claims

1. An implant locking structure, comprising:

the anchoring mechanism comprises an anchoring piece (1), an anchoring conduit (2), a limiting ring (6) and a limiting conduit (7), wherein the anchoring piece (1) is of a cylindrical structure and is coaxially fixed at one end of the anchoring conduit (2), at least two clamping jaws (3) are uniformly distributed on the inner wall of the anchoring piece (1) along the circumferential direction, a blocking ring (8) is fixed on the inner wall of one end, away from the anchoring conduit (2), of the anchoring piece (1), a locking area is formed between each clamping jaw (3) and each blocking ring (8), the anchoring piece (1) is provided with a tenon (14) and a mortise slot (15), each tenon (14) has a first state extending out of a cylinder wall and a second state pressed and embedded in the mortise slot (15) in a natural state, and each clamping jaw (3) is located on one side, away from the anchoring conduit (2), of the mortise slot (15); the limiting ring (6) is sleeved on the anchor (1) in a clearance mode and is suitable for driving the tenon (14) to be switched between a first state and a second state through axial movement; the limiting guide pipe (7) is fixedly connected with the limiting ring (6) and is suitable for pushing and pulling the limiting ring (6) to move along the axial direction of the anchoring piece (1);

a locking mechanism comprising a locking member (4) and a pushing conduit (5), wherein the locking member (4) is a cylindrical structure, the pushing conduit (5) is suitable for pushing the locking member (4) to move along the anchoring conduit (2) to the locking area, the outer diameter of the locking member (4) is smaller than the inner diameter of the anchoring conduit (2) so that the flexible rope can freely move between the locking member and the anchoring conduit, and the outer diameter of the locking member (4) is matched with the inner diameter of the locking area so that the flexible rope can be clamped and fixed through a gap between the locking member and the anchoring conduit;

the claw (3) has a natural state of extending outwards from the inner wall of the anchor (1) and an avoiding state of retracting to the inner wall of the anchor (1) under the pushing action of the locking piece (4).

2. The implant locking structure according to claim 1, wherein the anchor (1) comprises a large diameter section (13), a tapered section (12) and a small diameter section (11), the large diameter section (13) and the small diameter section (11) are connected through the tapered section (12), the large diameter section (13) and the anchoring catheter (2) are connected and have the same inner diameter, and the locking region is located in the small diameter section (11).

3. The implant locking structure according to claim 1, characterized in that the pawl (3) comprises:

a barrel shell (31) fixed to an outer wall of the anchor (1), an opening of the barrel shell (31) extending to an inner cavity of the anchor (1) and facing a center of the anchor (1);

a latch (32) mounted in the tub shell (31) and slidable only in an axial direction of the tub shell (31);

the driving part is fixed at the barrel bottom of the barrel shell (31) and is suitable for driving the clamping block (32) to move along the axial direction of the barrel shell (31).

4. The implant locking structure according to claim 3, wherein the driving member is a spring (33), two ends of the spring (33) respectively abut against the bottom of the barrel shell (31) and the latch (32), an end surface of the latch (32) close to the anchoring catheter (2) is provided with a slope adapted to guide the latch (32) to retract into the barrel shell (31) under the pushing action of the locking member (4), and a limiting member (34) is further disposed on the barrel shell (31) and/or the latch (32), and the limiting member (34) is adapted to limit an outward extending limit position of the latch (32) to prevent the latch (32) from falling out of the barrel shell (31).

5. The implant locking structure according to claim 4, characterized in that the stopper (34) is a projection fixed at the open end of the barrel shell (31), the projection facing the inside of the barrel shell (31), the projection being disposed near one end of the spring (33) corresponding to the inclined surface.

6. The implant locking structure according to claim 3, wherein the driving member is a linear motor (35), an output shaft of the linear motor (35) coincides with or is parallel to an axis of the tub shell (31), and an output shaft of the linear motor (35) is fixedly connected with the latch (32), the linear motor (35) is configured with a wireless module to be wirelessly controlled.

7. The implant locking structure according to claim 1, characterized in that the anchoring catheter (2) is a woven mesh catheter, and at least one guide wire is reserved between the woven mesh and the nylon elastomer of the woven mesh catheter, the guide wire being arranged in the circumferential direction of the woven mesh catheter.

8. The implant locking structure according to any one of claims 1 to 7, wherein the inner wall of the locking region is provided with a plurality of annular teeth, and the outer wall of the locking element (4) is provided with a plurality of annular inverted teeth.

9. The implant locking structure according to claim 8, wherein the anchor (1) and/or the locking element (4) are injection molded from a hard polymer material.