阅读说明：本技术 一种瓣环成形环用锚固装置及其锚固方法 (Anchoring device for annuloplasty ring and anchoring method thereof ) 是由 刘晓君 于 2019-12-03 设计创作，主要内容包括：本发明公开了一种瓣环成形环用锚固装置及其锚固方法,锚固装置包括依次连接的锚固件、穿透件和锁紧件,所述锚固件内设有可滑动的拉伸部和刺针,通过所述拉伸部的滑动使得所述刺针滑动刺入心脏组织内；瓣环成形环套设于所述穿透件上,所述锁紧件用于对所述瓣环成形环进行定位。本发明的锚固装置结构稳固可靠,操作方便快捷,通过本发明的锚固装置可以将瓣环成形环牢固可靠地固定在心脏组织上,从而可以起到良好的修复心脏瓣膜的作用,且同时可以降低对心脏组织的创伤。(The invention discloses an anchoring device for an annuloplasty ring and an anchoring method thereof, wherein the anchoring device comprises an anchoring part, a penetrating part and a locking part which are sequentially connected, a slidable stretching part and a puncture needle are arranged in the anchoring part, and the puncture needle is made to be slidably punctured into heart tissue through the sliding of the stretching part; an annuloplasty ring is sleeved on the penetrating member, and the locking member is used for positioning the annuloplasty ring. The anchoring device has stable and reliable structure and convenient and quick operation, and can firmly and reliably fix the annuloplasty ring on the heart tissue, thereby playing a good role in repairing the heart valve and simultaneously reducing the trauma to the heart tissue.)

1. An anchoring device for an annuloplasty ring, characterized in that,

comprises an anchoring part, a penetrating part and a locking part which are connected in sequence,

a slidable stretching part and a puncture needle are arranged in the anchoring part, and the puncture needle can be penetrated into heart tissue in a sliding manner through the sliding of the stretching part;

an annuloplasty ring is sleeved on the penetrating member, and the locking member is used for positioning the annuloplasty ring.

2. The annuloplasty ring anchoring device of claim 1,

the anchoring piece comprises a piercing part, one end of the piercing part is provided with a conical tip, and the other end of the piercing part is connected with a connecting pipe.

3. The annuloplasty ring anchoring device of claim 2,

a guide pipe is arranged on the outer side of the pipe wall of the connecting pipe, and the included angle between the guide pipe and the connecting pipe is 0-90 degrees;

the guide tube is communicated with the connecting tube, and the puncture needle can be slidably arranged in the guide tube.

4. The annuloplasty ring anchoring device of claim 1,

the pricking pin is provided with a limiting part which is used for preventing the pricking pin from separating from the connecting pipe.

5. The annuloplasty ring anchoring device of claim 2,

the penetrating piece comprises a first penetrating pipe and a second penetrating pipe which are communicated, and the annuloplasty ring is sleeved on the outer side of the first penetrating pipe.

6. The annuloplasty ring anchoring device of claim 5,

the first penetrating pipe is communicated with the connecting pipe,

the stretching portion is slidably disposed within the connecting tube and is slidable along the first and second penetration tubes.

7. The annuloplasty ring anchoring device of claim 6,

the stretching part is provided with a collision part which pushes the pricking pin to slide when the stretching part slides;

the conflict part is connected with a nerve pulling rope, and the nerve pulling rope extends along the connecting pipe, the first penetrating pipe and the second penetrating pipe and extends out of the second penetrating pipe.

8. The annuloplasty ring anchoring device of claim 5,

the locking member includes a locking portion and a locking claw fixed to an outer side of the second penetration pipe,

the locking part is used for locking and positioning the annuloplasty ring, and the locking claw is used for limiting the locking part.

9. The annuloplasty ring anchoring device of claim 8,

the locking part is provided with an elastic pressing sheet which is abutted against the annuloplasty ring.

10. A method of anchoring an anchoring device for an annuloplasty ring according to claims 1 to 9,

the method comprises the following steps:

inserting the anchoring piece into the heart tissue, and then pulling the nerve pulling rope to enable the stretching part to slide;

the puncture needle is pushed to slide out of the guide tube and penetrate into the heart tissue by the sliding of the stretching part;

(2) sleeving the annuloplasty ring outside the first penetration tube;

(3) the locking portion and the locking claws are fixed to the outside of the second penetration tube to position the annuloplasty ring such that the annuloplasty ring fits closely to the heart tissue.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an anchoring device for an annuloplasty ring and an anchoring method thereof.

Background

As is known, the human heart has four valves, namely a mitral valve for connecting the left ventricle and the left atrium, a tricuspid valve for connecting the right ventricle and the right atrium, an aortic valve for connecting the left ventricle with the aorta and a pulmonary valve for connecting the right ventricle with the pulmonary arteries, said valves acting as one-way valves ensuring the flow of blood from one direction to the other, said valves being directly or indirectly connected to the annulus of a dense fibrous ring of atrial and ventricular muscle fibers.

Mitral annulus dilation can result from a variety of causes, such as heart failure, and the valve may be diseased at birth or later in life, among others. Mitral annulus dilation directly results in untight closure of the valve, i.e., a line of juncture between the anterior and posterior leaflets. The untight closing of the valve results in poor blood regurgitation from the left atrium to the left ventricle. Blood regurgitation into the atrium not only causes high atrial pressure but also reduces the amount of blood flowing from the lungs into the left atrium, which is likely to cause pulmonary edema as it flows back into the pulmonary circulation system. And the amount of blood in the ventricles decreases, resulting in insufficient cardiac output. Severe reflux can lead to left heart failure and even cardiogenic shock.

CN102686185A discloses a tissue anchor for an annuloplasty device, specifically disclosing two anchor structures for securing a valve repair implant (such as a mitral annuloplasty ring) to a tissue (such as a native annulus), as shown in fig. 12, wherein one anchor uses a helical structure to screw into the tissue for anchoring, as shown in fig. 13, and the other uses a prong provided on the anchor, which is radially expandable for anchoring. The two anchoring structures are widely applied or deformed to be applied to tissue anchoring, and other feasible anchoring structures are not found.

Although the above two anchoring structures solve the problem of anchoring the valve repair implant (annuloplasty ring) to tissue to some extent and various subsequent design attempts to make the device more rational and more sophisticated, some unsatisfactory results still exist. The scheme of adopting helical structure to anchor has that it is relatively hard when screwing in the tissue, especially when installing on the tissue through the anchor through minimal access surgery or through pipe operation, maneuverability is relatively poor, adopts helical structure great to the tissue wound simultaneously, and has reversible rotation along with the movable helical structure of valve ring, even breaks away from the possibility of tissue, finally influences the restoration effect. The anchoring scheme adopting the fork-shaped body structure has the advantages that the resistance is large when the fork-shaped body enters the tissues, the radial outward expansion area of the fork-shaped body is large, the tissue deformation is large (researches show that the deformation can cause the re-expansion of the valve ring), and the wound area is large.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

Disclosure of Invention

The present invention aims to provide an anchoring device for an annuloplasty ring, which can firmly and reliably fix the annuloplasty ring to heart tissue and reduce trauma to the heart tissue, and an anchoring method thereof.

Therefore, the invention provides an anchoring device for an annuloplasty ring, which comprises an anchoring part, a penetrating part and a locking part which are connected in sequence, wherein a slidable stretching part and a puncture needle are arranged in the anchoring part, and the puncture needle is slidably punctured into heart tissue through the sliding of the stretching part; an annuloplasty ring is sleeved on the penetrating member, and the locking member is used for positioning the annuloplasty ring.

Preferably, the anchoring member comprises a puncturing part, one end of the puncturing part is provided with a conical tip, and the other end of the puncturing part is connected with a connecting pipe.

Preferably, a guide pipe is arranged on the outer side of the pipe wall of the connecting pipe, and the included angle between the guide pipe and the connecting pipe is 0-90 degrees; the guide tube is communicated with the connecting tube, and the puncture needle can be slidably arranged in the guide tube.

Preferably, the puncture needle is provided with a limiting part which is used for preventing the puncture needle from separating from the connecting pipe.

Preferably, the penetrating element comprises a first penetrating pipe and a second penetrating pipe which are communicated, and the annuloplasty ring is sleeved outside the first penetrating pipe.

Preferably, the first penetrating pipe is communicated with the connecting pipe, and the stretching part is slidably disposed in the connecting pipe and is slidable along the first penetrating pipe and the second penetrating pipe.

Preferably, the stretching part is provided with a collision part, and the collision part pushes the puncture needle to slide when the stretching part slides; the conflict part is connected with a nerve pulling rope, and the nerve pulling rope extends along the connecting pipe, the first penetrating pipe and the second penetrating pipe and extends out of the second penetrating pipe.

Preferably, the locking member comprises a locking part and a locking claw, the locking part is fixed on the outer side of the second penetrating pipe and used for locking and positioning the annuloplasty ring, and the locking claw is used for limiting the locking part.

Preferably, the locking part is provided with an elastic pressing sheet which is abutted against the annuloplasty ring.

The invention also provides an anchoring method of the anchoring device for the annuloplasty ring, which comprises the following steps: (1) inserting the anchoring piece into the heart tissue, and pulling the nerve pulling rope to enable the stretching part to slide; the puncture needle is pushed to slide out of the guide tube and penetrate into the heart tissue by the sliding of the stretching part; (2) sleeving the annuloplasty ring outside the first penetration tube; (3) the locking portion and the locking claws are fixed to the outside of the second penetration tube to position the annuloplasty ring such that the annuloplasty ring fits closely to the heart tissue.

Compared with the prior art, the invention has the advantages and positive effects that: the invention provides an anchoring device for an annuloplasty ring and an anchoring method thereof, wherein the anchoring device comprises an anchoring part, a penetrating part and a locking part which are sequentially connected, a slidable stretching part and a puncture needle are arranged in the anchoring part, and the puncture needle is made to be slidingly punctured into heart tissue through the sliding of the stretching part; an annuloplasty ring is sleeved on the penetrating member, and the locking member is used for positioning the annuloplasty ring. The anchoring device provided by the invention has a stable and reliable structure, is convenient and quick to operate, and can firmly and reliably fix the annuloplasty ring on the heart tissue, so that a good heart valve repairing effect can be achieved, and meanwhile, the trauma to the heart tissue can be reduced. (1) The anchoring piece is internally provided with a slidable stretching part and a puncture needle, the puncture needle is made to be slidably punctured into the heart tissue through the sliding of the stretching part, the contact area between the puncture needle and the heart tissue is small, the large-area damage to the heart tissue can be reduced, and meanwhile, the anchoring piece has firm and reliable anchoring effect. Moreover, during the process that the anchoring piece penetrates into the heart tissue, the puncture needle is positioned inside the anchoring piece and is not contacted with the heart tissue; after the anchoring piece penetrates into the heart tissue, the puncture needle penetrates into the heart tissue, so that damage to the heart tissue can be reduced to the greatest extent. (2) The puncture needle is made to penetrate into the heart tissue in a sliding mode through the sliding of the stretching part, and after the puncture needle penetrates into the heart tissue in a sliding mode, the stretching part is taken out, so that the operation is convenient and fast, and the puncture needle can be guaranteed to penetrate into the heart tissue. (3) The annuloplasty ring is sleeved on the penetrating piece, and the locking piece is used for positioning the annuloplasty ring, so that the annuloplasty ring can be tightly attached to heart tissues, and the annuloplasty ring is ensured to play a stable and effective repairing role.

Other features and advantages of the present invention will become more apparent upon reading of the following detailed description of the invention in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of one embodiment of an anchoring device for an annuloplasty ring of the present invention;

FIG. 2 is a partial schematic structural view of one embodiment of an anchoring device for an annuloplasty ring of the present invention;

FIG. 3 is a partial schematic structural view of one embodiment of an anchoring device for an annuloplasty ring of the present invention;

FIG. 4 is a partial schematic structural view of one embodiment of an anchoring device for an annuloplasty ring of the present invention;

FIG. 5 is a partial schematic structural view of one embodiment of an anchoring device for an annuloplasty ring of the present invention;

FIG. 6 is a partial schematic structural view of one embodiment of an anchoring device for an annuloplasty ring of the present invention;

fig. 7 is a structural view showing one example of a state in which the anchoring device for an annuloplasty ring of the present invention is used;

FIG. 8 is an enlarged view of portion A of FIG. 7;

FIG. 9 is an enlarged view of portion B of FIG. 8;

fig. 10 is a structural view illustrating one embodiment of a locking member of the anchoring device for an annuloplasty ring according to the present invention;

fig. 11 is a structural view illustrating another embodiment of a locking member of the anchoring device for an annuloplasty ring according to the present invention;

FIG. 12 is a schematic structural view of a helical anchor in a prior art anchor;

fig. 13 is a schematic structural view of a forked anchor in a conventional anchor.

Detailed Description

The following detailed description of specific embodiments of the present invention is provided to illustrate and explain the present invention and to be understood not to limit the present invention.

As shown in fig. 1-10, the anchoring device for an annuloplasty ring of this embodiment comprises an anchoring member, a penetrating member and a locking member connected in sequence, wherein a slidable stretching portion 10 and a needle 11 are provided in the anchoring member, and the needle 11 is slidably inserted into heart tissue 41 by sliding of the stretching portion 10; an annuloplasty ring 42 is placed over the penetrating member and a locking member is used to position the annuloplasty ring 42.

The anchoring device for an annuloplasty ring of the present embodiment may be used for repairing a patient's heart valves, particularly the mitral and tricuspid valves. The anchoring device of the present embodiment has a stable and reliable structure, and is convenient and fast to operate, and the annuloplasty ring 42 can be firmly and reliably fixed on the cardiac tissue 41 by the anchoring device of the present embodiment, so as to perform a good function of repairing the cardiac valve, and reduce the trauma to the cardiac tissue 41.

In this embodiment, the slidable stretching portion 10 and the needle 11 are disposed in the anchoring member, the needle 11 is slidably inserted into the cardiac tissue 41 by the sliding of the stretching portion 10, the contact area between the needle 11 and the cardiac tissue 41 is small, the large-area damage to the cardiac tissue 41 can be reduced, and the anchoring member has a firm and reliable anchoring effect. Moreover, during the process of the anchor penetrating the heart tissue 41, the lance 11 is located inside the anchor, the lance 11 not being in contact with the heart tissue 41; after the anchor penetrates the heart tissue 41, the lancet 11 is inserted into the heart tissue 41 to minimize damage to the heart tissue 41.

In this embodiment, the lancet 11 is slid into the heart tissue 41 by sliding the stretching portion 10, and after the lancet 11 is slid into the heart tissue 41, the stretching portion 10 is removed, so that the operation is convenient and quick, and the lancet 11 can be ensured to be inserted into the heart tissue 41.

In this embodiment, the annuloplasty ring 42 is sleeved on the penetrating member, and the locking member is used to position the annuloplasty ring 42, so as to ensure that the annuloplasty ring 42 is tightly attached to the cardiac tissue 41, and ensure that the annuloplasty ring 42 performs a stable and effective repairing function.

As shown in fig. 1-3, the anchor comprises a penetrating part 12, which penetrating part 12 is provided with a conical tip 13 at one end and is connected with a connecting tube 14 at the other end. The puncturing part 12 and the connecting tube 14 are punctured into the heart tissue 41, the puncturing end of the puncturing part 12 is designed with a conical tip 13, the conical tip 13 is punctured into the heart tissue 41 first, and the smooth and effective puncturing of the anchoring member into the heart tissue 41 can be facilitated.

In this embodiment, the puncturing part 12 and the tapered tip 13 are formed as a single piece and can be integrally formed by a machining process.

In this embodiment, the deployed section 12 and the connection tube 14 may be welded together. Preferably, the other end of the puncturing part 12 is provided with a groove 121, the connecting tube 14 is provided with a welding projection 141, and the welding projection 141 is welded and fitted in the groove 121, so that the puncturing part 12 and the connecting tube 14 are welded and connected; the welding projection 141 is welded in the groove 121, so that the puncturing part 12 and the connecting pipe 14 are firmly and reliably connected on one hand, and the positioning fool-proofing effect can be achieved on the other hand, the welding projection 141 is butted with the groove 121, and the accurate connection of the puncturing part 12 and the connecting pipe 14 can be achieved.

The outer side of the pipe wall of the connecting pipe 14 is welded with a guide pipe 15, the guide pipe 15 is communicated with the connecting pipe 14, and the included angle theta between the guide pipe 15 and the connecting pipe 14 is 0-90 degrees. The number of the guide tubes 15 may be plural, the plural guide tubes 15 may be distributed at equal intervals along the circumferential direction of the connection tube 14, or the plural guide tubes 15 may be distributed on the tube wall of the connection tube 14 in a staggered manner, which is not limited herein. In this embodiment, preferably, the plurality of guide tubes 15 are equally spaced along the circumferential direction of the connecting tube 14, so that the anchoring force between the anchoring member and the cardiac tissue 41 is uniformly distributed, and the anchoring device of this embodiment can be firmly and effectively connected to the cardiac tissue 41.

In this embodiment, the number of the needles 11 is equal to that of the guide tubes 15, the number of the needles 11 is plural, and the plural needles 11 penetrate into the heart tissue 41, so that the anchor member can be firmly and effectively fixed in the heart tissue 41.

In this embodiment, the lancet 11 is slidably disposed within the guide tube 15, and the length of the lancet 11 is greater than the length of the guide tube 15. The guide tube 15 is arranged outside the connecting tube 14, the guide tube 15 is also inserted into the heart tissue 41, and the length of the guide tube 15 is very small and is far less than that of the puncture needle 11, so that the damage of the guide tube 15 to the heart tissue 41 can be reduced, and the guide effect of the guide tube 15 to the puncture needle 11 can be ensured.

The guide tube 15 can guide the sliding of the lancet 11 such that the lancet 11 slides along the oblique direction of the guide tube 15 and penetrates into the heart tissue 41. The included angle theta between the guide tube 15 and the connecting tube 14 is 0-90 degrees, namely the included angle theta between the puncture needle 11 and the connecting tube 14 is 0-90 degrees, and the puncture needle 11 penetrates into the heart tissue 41 along the inclined direction defined by the included angle theta, so that the anchoring member can be firmly and effectively fixed in the heart tissue 41. In addition, the lancet 11 has a small contact area with the heart tissue 41, which can reduce the trauma to the heart tissue 41. Therefore, the anchor of the present embodiment can greatly reduce damage to the cardiac tissue 41 while achieving a stable and reliable anchoring effect.

In this embodiment, θ is preferably 30 ° -50 °, which provides the strongest and most secure anchoring connection between the anchor and the heart tissue 41.

The lancet 11 is provided with a stopper portion 16, and the stopper portion 16 is used to prevent the lancet 11 from being detached from the connecting tube 14. In this embodiment, the limiting portion 16 and the puncturing needle 11 are integrally formed, the limiting portion 16 can be in a spherical shape, and the diameter of the limiting portion 16 is slightly larger than the inner diameter of the guide tube 15, so that the limiting portion 16 can be in interference fit with the guide tube 15, and the limiting portion 16 cannot slide in the guide tube 15, so that the puncturing needle 11 can be limited, the puncturing needle 11 is prevented from loosening, the puncturing needle 11 is prevented from sliding out of the guide tube 15, and the puncturing needle 11 is prevented from separating from the connecting tube 14.

As shown in fig. 4 and 5, in this embodiment, the connection pipe 14 is not a single complete pipe structure, and the connection pipe 14 is formed by splicing a plurality of arc-shaped pipe pieces 142. Two adjacent segments 142 may be welded together, and are not particularly limited herein. If the connecting tube 14 is a single integral tube structure, the installation of the puncture needle 11 cannot be realized; the lancet 11 cannot be installed from the outside of the connecting tube 14 to the inside thereof because the stopper portion 16 of the lancet 11 cannot pass through the guide tube 15 into the connecting tube 14; it is also impossible to install the lancet 11 inside the connecting tube 14 because the connecting tube 14 has a small inner diameter and cannot be manipulated inside the connecting tube 14. Therefore, in the present embodiment, the connection tube 14 is formed by splicing a plurality of arc-shaped tube pieces 142, so that the lancet 11 can be easily mounted. The tube sheet 142 is welded with a guide tube 15, and a puncture needle 11 is inserted in the guide tube 15.

The penetrating member includes a first penetrating pipe 21 and a second penetrating pipe 22 which are communicated with each other, and the first penetrating pipe 21 and the second penetrating pipe 22 may be a single member or may be welded to each other, which is not particularly limited herein.

In this embodiment, the outer end of the second penetration tube 22 is provided with a guide hole 23, and a guide rope 24 is fixed in the guide hole 23. When installing the annuloplasty ring 42, the annuloplasty ring 42 is inserted through the guide string 24, moved along the guide string 24 towards the first penetration tube 21, such that the annuloplasty ring 42 is sleeved outside the first penetration tube 21, completing the installation of the annuloplasty ring 42.

After installation of the annuloplasty ring 42, the guide cords 24 are cut and removed. The guide cord 24 may serve as a guide for installation of the annuloplasty ring 42, and may facilitate guide installation of the annuloplasty ring 42.

In this embodiment, the material of guide rope 24 can be for weaving the dacron suture, and the tensile strength who weaves the dacron suture is high, can not break easily.

The first penetrating pipe 12 may be welded to the connection pipe 14, and the first penetrating pipe 21 and the second penetrating pipe 22 are in communication with the connection pipe 14, and an inner diameter of the first penetrating pipe 21 and an inner diameter of the second penetrating pipe 22 are equal to an inner diameter of the connection pipe 14. The stretching part 10 is slidably disposed in the connection pipe 14 and is slidable along the first and second penetration pipes 21 and 22.

The stretching part 10 is provided with an abutting part 17, the abutting part 17 is connected with a nerve pulling rope 18, and the nerve pulling rope 18 extends out of the second penetrating pipe 22. In this embodiment, the stretching portion 10 and the abutting portion 17 are an integral piece, the abutting portion 17 is conical, and the nerve pulling rope 18 is fixed to the tip end portion of the abutting portion 17. The tip of the abutting portion 17 may be provided with a connection hole 171, and the nerve pulling rope 18 may be fixedly sleeved in the connection hole 171, so that the connection of the nerve pulling rope 18 and the abutting portion 17 may be achieved. The nerve cord 18 may be connected to the interference portion 17 by other means, which is not limited in this regard.

By pulling the nerve pulling rope 18, the stretching part 10 can be made to sequentially slide through the connecting tube 14, the first penetrating tube 21 and the second penetrating tube 22, and during the sliding process of the stretching part 10, the interference part 17 interferes with the limiting part 16 on the puncture needle 11 to push the puncture needle 11 to slide along the guide tube 15, so that the puncture needle 11 can be made to slidably puncture the heart tissue 41.

In this embodiment, as shown in fig. 3, the length M of the stretching portion 10 is smaller than the distance N between the position-limiting portion 16 and one end of the connecting tube 14, so that when the stretching portion 10 slides, the interference portion 17 can interfere with and push the position-limiting portion 16 on the lancet 11 to slide the lancet 11.

In this embodiment, the hardness of the stretching part 10 is greater than that of the lancet 11, so as to ensure that the lancet 11 can be pushed to slide during the sliding of the stretching part 10.

In this embodiment, the material of the magic rope 18 may be a knitted polyester suture, which has high tensile strength and is not easy to break; the tensile strength of the pull cord 18 is sufficient to withstand the penetration force of the lancet 11 into the heart tissue 41, thereby ensuring that the lancet 11 penetrates the heart tissue 41. The surface of the nerve pulling rope 18 can be coated with polytetrafluoroethylene, so that the nerve pulling rope 18 has excellent chemical stability and corrosion resistance, the sliding friction force of the nerve pulling rope 18 can be reduced, and the nerve pulling rope 18 can smoothly slide.

The locking member includes a locking portion 31 fixed to the outside of the second penetration pipe 22 and a locking claw 32, and the locking claw 32 is used to restrain the locking portion 31.

In this embodiment, the locking portion 31 may be a cylindrical plate or a disc, a through hole (not shown in the figure) is disposed in the middle of the locking portion 31, the aperture of the through hole is equal to the outer diameter of the second penetrating pipe 22, and the through hole is matched with the second penetrating pipe 22 to fixedly sleeve the locking portion 31 on the second penetrating pipe 22. As shown in fig. 6, the thickness S of the locking portion 31 is smaller than the length T of the second penetration pipe 22, and the locking portion 31 is disposed near the first penetration pipe 21. The annuloplasty ring 42 is sleeved on the first penetrating tube 21, the locking portion 31 is sleeved on the second penetrating tube 22, and the locking portion 31 can lock and position the annuloplasty ring 42, so that the annuloplasty ring 42 can be more firmly attached and fastened to the heart tissue 41.

In this embodiment, two symmetrical blind holes 25 are formed at an end of the wall of the second penetration tube 22 close to the guide hole 23, the number of the locking claws 32 is two, and the two locking claws 32 are respectively and fixedly inserted into the two blind holes 25. The locking claws 32 can limit and fix the locking part 31, so that the locking part 31 is firmly and reliably sleeved on the second penetrating pipe 22, and the annuloplasty ring 42 can be firmly and reliably connected.

In this embodiment, the material of the locking portion 31 may be a shape memory material commonly used in the art, so that the locking portion 31 is conveniently sleeved outside the second penetration pipe 22. The locking claw 32 can be made of shape memory materials commonly used in the technical field, so that the locking claw 32 can be conveniently inserted and fixed in the blind hole 25.

In another embodiment, as shown in fig. 11, a plurality of elastic pressing plates 33 are connected to the end of the locking portion 31 along the circumferential direction, and the elastic pressing plates 33 are abutted against the annuloplasty ring 42, so as to apply a pressing force to the annuloplasty ring 42, so that the annuloplasty ring 42 is connected more firmly and reliably, and the repairing effect is improved.

In this embodiment, the total length of the entire anchoring device is 10-30mm (excluding the lengths of the distraction and guide lines 18, 24), the total length of the anchoring element is 5-15mm, and the total length of the penetrating member is 6-15 mm. The outer diameter of the connecting pipe 14 is 3-5mm, the wall thickness of the connecting pipe 14 is 0.8-1.2mm, and the inner diameter of the guide pipe 15 is 0.4-0.6 mm. The diameter of the lancet 11 is smaller than the inner diameter of the guide tube 15 so that the lancet 11 can slide within the guide tube 15.

The installation process of the anchor comprises the following steps: a through hole (not shown in the drawings) is provided in the segment 142, a guide tube 15 is welded to the through hole, the inner diameter of the guide tube 15 is equal to the diameter of the through hole, and the guide tube 15 is located outside the segment 14. The lance 11 is inserted into the guide tube 15, the lance 11 is inserted into the guide tube 15 from the inner side of the tube sheet 142 to the outer side, and then the tube sheets 142 are welded and spliced in sequence to form the cylindrical connecting tube 14. The stretching part 10 is placed in a connecting pipe 14 formed by splicing, the connecting pipe 14 is welded to the puncturing part 12, and the stretching part 10 is located at one end of the connecting pipe 14 welded to the puncturing part 12.

The anchor and penetrator connection process comprises: the connecting pipe 14 is welded to one end of the first penetrating pipe 21, the second penetrating pipe 22 is welded to the other end, and the leash 18 sequentially passes through the first penetrating pipe 21 and the second penetrating pipe 22 and extends out of the second penetrating pipe 22.

Taking mitral annulus expansion repair as an example, before using the anchoring device of the present embodiment, firstly, parameters of the mitral annulus to be repaired are detected according to the prior art, then, an annuloplasty ring 42 for repair is manufactured, and how many anchoring devices of the present embodiment are required for design according to the size (which may be local or ring) of the annuloplasty ring 42; generally 6-12 anchoring devices are required, and are not particularly limited herein.

The anchoring method of the anchoring device of the present embodiment includes:

(1) inserting anchors into the heart tissue 41: specifically, the tapered tip 13 is first inserted into the heart tissue 41 by the conventional medical aid, and then the insertion portion 12 and the connection tube 14 are inserted into the heart tissue 41. Pulling the nerve pulling rope 19 to slide the stretching part 10; during the sliding process of stretching part 10, interference part 17 interferes with and pushes limiting part 16 on needle 11, so that needle 11 can be pushed to slide along guide tube 15, and needle 11 can be slid to penetrate heart tissue 41. The tensile cord 19 and the tensile section 10 are pulled out from the second penetration tube 22, and the tensile cord 19 and the tensile section 10 are not located in the heart tissue 41.

(2) The annuloplasty ring 42 is sleeved outside the first penetration tube 21; specifically, the installation of the annuloplasty ring 42 is completed by passing the annuloplasty ring 42 through the guide cords 24, moving the annuloplasty ring 42 along the guide cords 24 towards the first penetration tube 21, so that the annuloplasty ring 42 is sleeved outside the first penetration tube 21. After installation of the annuloplasty ring 42, the guide cords 24 are cut and removed.

(3) The locking portion 31 and the locking claws 32 are in turn fixed to the outside of the second penetration tube 22 to lock and position the annuloplasty ring 42 such that the annuloplasty ring 42 fits tightly against the heart tissue 41.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.