CN117122383A - Repair system - Google Patents

Abstract

The application relates to the field of medical equipment, in particular to a repair system which at least comprises a double-puncture structure, a capture device and a repair unit connected with the double-puncture structure, wherein the double-puncture structure is used for guiding the repair unit, and the double-puncture structure can pass through tissues to be repaired back and forth in the repair process; the capture device is arranged at the first puncture starting point side of the double puncture structure and props against tissues in the repairing process, and provides supporting force for the tissues which are punctured for the second time of the double puncture structure, so that the tissues which are punctured for the second time are respectively provided with supporting force and puncturing force from the near end and the far end directions, the double puncture structure can puncture at the target position smoothly, the accuracy of the puncture point is guaranteed, and the capture device is also responsible for capturing the repairing unit after the second puncture.

Description

Repair system

Technical Field

The application relates to the field of medical instruments, in particular to a repair system.

Background

The foramen ovale is a physiologic pathway in the atrial septum embryo phase. The fetus does not have pulmonary circulation and oxygenated blood from the umbilical cord flows from the right atrium of the fetus to the left atrium through the foramen ovale. After birth, with the establishment of pulmonary circulation, left atrial pressure increases, secondary and primary septa approach each other, adhere and fuse, gradually forming a permanent atrial septum. However, some people are not fused, so that patent foramen ovale (PFO for short) is formed. For patent foramen ovale, the residual slit-like abnormal passages of the primary and secondary compartments resemble a functional valve, since the left atrium of the heart is at a higher pressure than the right atrium, blood may flow from the left atrium into the right atrium through the foramen ovale, and long-time left atrium flows to the right atrium, resulting in an increase in the blood volume of the right atrium, causing hypertrophy of the right ventricle, and an increase in the blood volume of the pulmonary circulation. When the right atrial pressure is higher than the left atrial pressure, the left weak primary septum is pushed aside, blood branches right to left, and in addition, the following emboli may enter the left cardiac system to cause corresponding clinical symptoms: the risk of recurrence is still high for patent foramen ovale with thrombotic events, due to thrombosis of the deep vein of the lower limb or pelvic vein, air emboli caused by caisson's disease or decompression sickness, and fat emboli formed after surgery or trauma.

At present, a main stream product in clinic is a traditional double-disc oval hole plugging device, the traditional double-disc oval hole plugging device is of a double-disc structure, and is provided with a left disc, a right disc and a short waist part, wherein the left disc and the right disc are bilaterally symmetrical, the short waist part is connected between the left disc and the right disc, the middle part of the left side of the left disc is provided with a protruding collecting end, and the middle part of the right side of the right disc is provided with a protruding collecting end. However, the conventional double-disc foramen ovale occluder has more or less problems in clinical use. If the foramen ovale is closer to the superior and inferior vena cava or main pulmonary artery, the edge of the occluder may abrade the vessel, resulting in occlusion failure; if the occluder with smaller specifications of the left disc surface and the right disc surface is selected, the anchoring effect of the occluder is poor, so that the stability of the occluder is poor, in addition, the fossa ovalis a puncture point of atrial septum puncture in cardiac intervention operation, and after the patent with the patent foramen ovale with potential interventional cardiac treatment is occluded by the traditional occluder, the situation that the atrial septum puncture is difficult to carry out, and an interventional treatment cannot be adopted, and a treatment method with higher risk is used can be faced.

Patent CN202111079433.7 discloses a repairing apparatus for tissue defect, the repairing apparatus comprises a repairing unit and a releasing unit, the repairing unit comprises a connecting unit and a locking unit connected with the connecting unit, the locking unit is positioned in a proximal end area of the connecting unit, and the releasing unit is positioned in a proximal end area of the locking unit; the connection unit comprises at least one or more connection pieces; the conveying system comprises a puncture needle, when the repairing instrument is positioned in the conveying system, the connecting unit comprises a first free end positioned in the far end area of the connecting unit and a second free end positioned in the near end area of the locking unit, the first free end is provided with an abutting piece, the second free end is provided with a hooking piece, the puncture needle has a preset shape, after passing through a secondary partition and reversely passing through a primary partition, the puncture needle is retracted and pushed by a thimble to release the abutting piece, the locking transmission rod is operated to hook the hooking piece, when the locking unit is locked, the connecting unit and the locking unit are integrally in a repairing state and then are connected with the releasing unit, and then the releasing unit is operated to break and separate the releasing unit and the locking unit; the technical defect of the scheme is that: firstly, as the connecting unit and the locking unit are both preloaded in the puncture needle, the tube diameter design of the puncture needle is large enough to store the connecting unit and the locking unit, but the puncture needle can leave a hole with large diameter on the punctured endocardial tissue, so that the oval hole still cannot be repaired; secondly, the locking unit is made of metal materials, after the releasing unit is broken and separated, any part of the locking unit or locking piece is remained in an atrium, and thrombus is easy to occur under long-term scouring of blood flow of the metal materials, so that the physical health of a patient is affected.

Patent US20070032796A1 discloses a delivery system for deploying a medical device, for closing a passageway of a body, comprising a catheter shaft having a proximal end and a distal end, a deflectable tissue piercing structure slidably engaged within the catheter shaft, the deflectable tissue piercing structure having a tubular shape defining a longitudinal axis, having a lumen and a hollow surface and an open distal tip, at least a portion of the tissue piercing structure being deflectable relative to the longitudinal axis, the deflectable tissue piercing structure further comprising a tubular stitch along the proximal end of the tissue piercing structure, a tubular needle tip along the distal end of the tissue piercing structure, the needle tip terminating with a chamfer, a first longitudinal member forming a needle handle connected to the distal end of the catheter shaft to form a tab such that the catheter shaft and the needle handle cannot move relative to one another, a second longitudinal member forming a needle spine attached directly between the proximal end of the tubular needle tip and the distal end of the tubular needle body, but not between the catheter shaft such that the needle spine can move freely within the catheter shaft, and a needle support tube covering at least a portion of the tissue piercing structure to constrain movement of the first longitudinal member and the second longitudinal member within the catheter shaft such that the actuator is translatable about the catheter shaft to cause translational movement of the first member and the deflectable needle shaft relative to the tubular shaft; the design defect of this scheme lies in: firstly, the deflectable tissue piercing structure needs to enter the right atrium from the left atrium during the second piercing, namely, the needle tip needs to enter the right atrium from the left atrium through the primary septum, but in actual situations, the primary septum is flexible and is not supported, the deflectable tissue piercing structure is difficult to accurately pierce into the primary septum, and the risk of operation failure is high; secondly, the locking device is pre-installed in the deflectable tissue piercing structure, and after the piercing is completed, the conveying device is required to be operated to convey the locking device to the position to be repaired, and the moving device and the deflectable tissue piercing structure are required to be operated simultaneously to release in the mode, so that the operation is complex and the effect is poor.

In summary, the following problems to be solved in the prior art are: first, the problem of leaving a large aperture in the foramen ovale due to the large diameter of the piercing structure; second, the problem of thrombus induction by leaving metal residues in the heart; thirdly, the puncture structure is difficult to puncture accurately because no corresponding supporting force is obtained during puncture; fourth, the operation step of releasing the locking device is complicated.

Disclosure of Invention

The present application has been made in view of the above and other further ideas.

The application aims to overcome the defects of the prior art, and provides a repairing system aiming at unreasonable puncture structure design and unreasonable locking piece design.

The application aims at realizing the following scheme:

the repairing system at least comprises a double-puncture structure, a capturing device and a repairing unit connected with the double-puncture structure, wherein the double-puncture structure is used for guiding the repairing unit, and the double-puncture structure can pass through tissues to be repaired back and forth in the repairing process; the capture device is arranged at the side of the first puncture starting point of the double puncture structure and props against the tissue in the repairing process, so that a supporting force is provided for the tissue punctured for the second time of the double puncture structure, and the capture unit is captured.

The aim of the application can be further realized by the following technical scheme:

further, the capturing device comprises a capturing rod and a capturing ring connected to the distal end of the capturing rod; in addition, in a natural state, the capturing rod and the capturing ring are not positioned on the same plane.

Further, in a natural state, the capturing ring is a three-dimensional object and is not planar.

Further, the repair unit comprises a connecting piece and a limiting head arranged at the distal end of the connecting piece, wherein the limiting head is connected with the double-puncture structure when being preassembled.

Further, the restriction head is connected to the distal end of the double penetration structure.

Further, the connecting piece is formed or provided with a repair ring at the proximal end, and the repair ring is spatially sleeved outside the capturing rod.

Further, the integral or distal portion of the capture ring is urged against tissue prior to the second penetration of the double penetration structure; and, in the projection direction of the capture ring, the distal end of the double puncture structure is located within the capture ring.

Further, when the double-puncture structure performs the second puncture, the puncture force from the double-puncture structure and the supporting force of the capturing ring are obtained by the tissue subjected to the second puncture, wherein the puncture force of the double-puncture structure is concentrated at one point, the supporting force of the capturing ring is uniformly distributed at the joint of the capturing ring and the tissue, the direction of the puncture force is in the proximal direction, and the direction of the supporting force is in the distal direction, so that the tissue subjected to the second puncture is limited between the two and is stably hooped.

Further, after the limiting head is separated from the double-puncture structure, the capture rod is pulled so that the limiting head is restrained by the capture ring and moves proximally.

Further, the repair system further comprises a delivery catheter comprising a loading sheath and a support connected to the double penetration structure; and the catching rod is also sleeved in the loading sheath.

Further, in a natural state, a tangent line at a starting point and a tangent line at an ending point of the double-puncture structure are parallel or form an acute angle, and the double-puncture structure is in a J shape or a U shape or a C shape or an M shape or a W shape; and the double puncture structure is linear or arc-shaped when being preloaded in the loading sheath, and is in a natural state after being pushed out of the loading sheath by the supporting piece.

Further, during proximal movement of the restraining head with the capture rod, the prosthetic ring moves distally, the restraining head passing through the prosthetic ring; and, the repair loop begins to shrink after approaching or touching the first puncture start point until the repair loop pulls or pulls two punctured pieces of endocardial tissue into one place.

Further, the repair unit or the connecting piece is a polymer line.

Further, the double puncture structure brings the restriction head from the right atrium to the left atrium when the puncture is performed for the first time; during the second puncture, the double puncture structure brings the limiting head from the left atrium to the right atrium.

Further, the capture ring enters the loading sheath under movement of the capture rod.

Further, the capture ring comprises two symmetrical shape memory metal strips, and the two shape memory metal strips are close to each other in the process that the capture ring enters the loading sheath along with the capture rod.

Further, the direction of the first puncture of the double puncture structure is from the proximal end to the distal end, and the direction of the second puncture of the double puncture structure is from the distal end to the proximal end.

Further, the first puncture of the double puncture structure is from the right atrium through the secondary septum into the left atrium, and the second puncture of the double puncture structure is from the left atrium through the primary septum into the right atrium.

Further, the double penetration structure penetrates the secondary/primary septum simultaneously for the first penetration.

Further, the double penetration structure penetrates the primary septum/secondary septum simultaneously for a second penetration.

Further, the direction of the first puncture of the double puncture structure is opposite to the direction of the second puncture of the double puncture structure.

Further, an included angle a is formed between the direction of the first puncture of the double puncture structure and the direction of the second puncture of the double puncture structure, and a is 90-180 degrees.

Further, the repair ring is sleeved outside the loading sheath.

Further, the repair ring is spatially sleeved outside the capturing rod and the supporting piece.

Further, the smaller the repair loop, the tighter the two pieces of punctured endocardial tissue are pulled.

Compared with the prior art, the technical scheme of the application at least has the following advantages:

1. in the prior art, the puncture structure is difficult to puncture or inaccurate in puncture due to the fact that a support is not arranged, and after the puncture is finished, a moving device and a deflectable tissue puncture structure are required to be simultaneously operated to release a repair unit, so that operation steps are complex, and an actual repair effect is poor. On the other hand, the double-puncture structure can pass through the tissue to be repaired in a reciprocating manner in the repairing process, the capturing device is arranged at the first puncture starting point side of the double-puncture structure and props against the tissue in the repairing process, and a supporting force is provided for the tissue which is punctured for the second time of the double-puncture structure, so that the supporting force and the puncturing force which are respectively from the near end and the far end directions are obtained for the tissue which is punctured for the second time, the double-puncture structure can puncture at the target position smoothly, the accuracy of the puncturing point is ensured, the repairing action is facilitated, and two punctured tissues can be repaired more tightly.

2. In the prior art, after the puncture structure completes the first puncture, as no object supports the primary septum, the puncture structure is difficult to prop against and puncture the primary septum when the second puncture is performed, and the puncture failure is easy to cause or the secondary injury is caused by tearing the primary septum; in addition, after the capture device finishes the supporting function, the capture repair unit can also capture, namely under the action or pulling of the capture device, the repair unit pulls or pulls two punctured endocardial tissues to one place so as to finish the repair of the oval foramen.

3. According to one aspect of the application, the prosthetic unit comprises a connector, and a restraining head arranged at the distal end of the connector, the restraining head being connected to the distal end of the double penetration structure when preloaded, the purpose of this design being: when the distal end of the puncture structure enters the left atrium through the secondary septum, the limiting head also enters the left atrium along with the puncture structure, when the distal end of the puncture structure enters the right atrium from the left atrium through the primary septum, the limiting head also enters the right atrium along with the puncture structure, thus the two puncture results are that holes are respectively punctured on the secondary septum and the primary septum, the connecting piece penetrates the holes on the secondary septum and the primary septum, the secondary septum and the primary septum can be sutured or connected together by pulling the connecting piece, thereby the problem that the oval hole is not repaired is solved, the design of the operation principle is ingenious, few implants are left in the body, the patient recovery is facilitated, and the humanized level is high.

4. According to one conception of the application, the capturing device comprises a capturing rod and a capturing ring arranged at the distal end of the capturing rod, and the capturing ring is propped against the primary space during puncturing, so that the distal end of the double puncturing structure is necessarily positioned in the capturing ring after puncturing, namely, in the projection direction of the capturing ring, the distal end of the double puncturing structure is positioned in the capturing ring, and as such, the limiting head is inevitably sleeved in the capturing ring after entering the right atrium from the left atrium and being separated from the double puncturing structure, and under the condition, the limiting head can be captured into the capturing hook by pulling the capturing rod, so that the repairing unit is pulled to stitch the oval hole, the operation is very smooth, and all the components are matched in place, so that the operation steps are simplified, the operation efficiency is high, and the operation success rate is high.

5. According to one conception of the application, the starting point tangent line of the double puncture structure is parallel to or forms an acute angle with the tangent line of the ending point, and is in a J shape or U shape or C shape or M shape or W shape, in order to puncture and guide the repair unit, the semi-closed double puncture structure is equivalent to a round-trip channel, the restriction head is delivered from the right atrium to the left atrium and then back to the right atrium, and passes through the secondary septum and the primary septum in the delivery process, thereby realizing the function of repairing the oval foramen.

6. According to one aspect of the application, the connecting element is formed or provided with a repair collar at the proximal end, and the repair collar is spatially sleeved outside the catch bar, which is designed for the purpose of: in order to stitch the secondary separator and the primary separator together, the connecting piece needs to pass through the inside of the repairing ring after passing through the primary separator, and then the connecting piece is pulled to enable the repairing ring to be continuously contracted to form a knot, wherein the capturing rod is sleeved in the repairing ring, so that the limiting head and the connecting piece are ensured to pass through the repairing ring under the pulling of the capturing ring; on the other hand, the repairing ring is sleeved outside the loading sheath, the surface of the loading sheath is smooth, the pipe diameter is large, and the repairing ring moves to the final knotting and stitching position along the loading sheath, so that the problem of knotting of the repairing ring in advance can be prevented.

7. According to one conception of the application, the whole repairing unit or the connecting piece is made of polymer wires, so that the repairing ring formed by winding or knotting the connecting piece is also made of polymer wires, therefore, after the repair work of the oval foramen is finished, the implant left at the interatrial septum only has the polymer wires, the implant can be gradually integrated with heart tissues, after the interventional operation is finished, no burden is caused to the heart, no diseases or other sequelae are induced, the effect is excellent, and the popularization value is high.

Embodiments of the present application are capable of other advantageous technical effects not listed one by one, which may be described in part below; and will be appreciated and understood by those skilled in the art upon reading the present disclosure.

Drawings

The above features and advantages and other features and advantages of these embodiments and the manner of attaining them will become more apparent by reference to the following description in conjunction with the accompanying drawings; and in which embodiments of the application may be better understood, reference is made to the accompanying drawings in which:

FIGS. 1a and 1b are schematic views showing the overall structure of the repair system according to the present application

Fig. 2a and 2b are schematic views of the overall schematic of the capture device of the present application connected to a double piercing structure and support.

Fig. 3 a-3 c are schematic views of the process of the first puncture secondary barrier of the double puncture structure of the present application.

Fig. 4a to 4d are schematic views of the process of the second puncture primary septum and the state after recovering the double puncture structure according to the present application.

Fig. 5a to 5e are schematic views showing a process of pulling the capturing rod to enable the connecting piece and the repairing ring to move, wherein the loading sheath in fig. 5b to 5e is not shown in the drawings, and the loading sheath in fig. 5b to 5e is shown in fig. 5 a.

Fig. 6 a-6 e are schematic views showing the process of pulling or pulling two pieces of punctured endocardial tissue into place with the prosthetic ring of the present application gradually contracted.

The features indicated by the numbers in the drawings are as follows:

1-double puncture structure, 2-capture device, 21-capture rod, 22-capture ring, 3-repair unit, 31-connector, 32-restriction head, 33-repair ring, 4-delivery catheter, 41-loading sheath, 42-support.

Detailed Description

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims.

It is to be understood that the illustrated and described embodiments are not limited in application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The illustrated embodiments may be other embodiments; and can be implemented or performed in various ways. Examples are provided by way of explanation, not limitation, of the disclosed embodiments. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the various embodiments of the application without departing from the scope or spirit of the disclosure. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. Accordingly, the present disclosure is intended to cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

The application will be described in more detail below with reference to different embodiments and examples of several aspects of the application.

In the present application, the term "proximal" or "proximal" refers to the end or side closer to the operator and "distal" or "distal" refers to the end or side farther from the operator.

In the present application, the term "first puncture" refers to the distal end of the double puncture structure being punctured from the proximal end toward the distal end, and the term "second puncture" refers to the distal end of the double puncture structure being punctured from the distal end toward the proximal end.

In the prior art, the problem that a large aperture is left on the oval foramen due to the large diameter of the puncture structure, the problem that metal residues are left in the heart to induce thrombus, and the problem that the puncture structure cannot accurately puncture due to the fact that corresponding supporting force is not obtained during puncture are existed.

One of the objects of the embodiments described below is to solve the above-mentioned drawbacks, as well as other problems.

Example 1

As shown in fig. 1a and 1b, a repair system according to an embodiment of the present application is illustrated, at least comprising a double puncture structure 1, a capturing device 2 and a repair unit 3 connected to the double puncture structure 1, the double puncture structure 1 being used for guiding the repair unit 3, and the double puncture structure 1 being capable of traversing tissue to be repaired back and forth during repair; the capturing device 2 is arranged at the first puncture starting point side of the double puncture structure 1 and props against the tissue in the repairing process, provides supporting force for the tissue punctured by the double puncture structure 1 for the second time, and captures the repairing unit 3.

In the first embodiment, the capturing device 2 includes a capturing rod 21 and a capturing ring 22 connected to a distal end of the capturing rod 21; in a natural state, the capturing rod 21 and the capturing ring 22 are not located on the same plane, as shown in fig. 2 a.

In the first embodiment, the repairing unit 3 includes a connecting member 31 and a limiting head 32 disposed at a distal end of the connecting member 31, and the limiting head 32 is connected to the double puncture structure 1 when being preloaded.

In the first embodiment, the limiting head 32 is connected to the distal end of the double puncture structure 1.

In the first embodiment, the connecting member 31 is formed or provided with a repairing ring 33 at a proximal end, and the repairing ring 33 is spatially sleeved outside the capturing rod 21.

In the first embodiment, before the second puncture of the double puncture structure 1, the whole or distal end portion of the capturing ring 22 abuts against the tissue; and, in the projection direction of the capture ring 22, the distal end of the double penetration structure 1 is located inside the capture ring 22, as shown in fig. 1b and 4 b.

In the first embodiment, when the double puncture structure 1 performs the second puncture, the puncture force from the double puncture structure 1 and the supporting force of the capturing ring 22 are obtained from the tissue that is punctured for the second time, wherein the puncture force of the double puncture structure 1 is concentrated at one point, the supporting force of the capturing ring 22 is uniformly distributed at the connection position between the capturing ring 22 and the tissue, the direction of the puncture force is in the proximal direction, and the direction of the supporting force is in the distal direction, so that the tissue that is punctured for the second time is limited between the two and is stably hooked.

In the first embodiment, after the limiting head 32 is separated from the double puncture structure 1, the capturing rod 21 is pulled so that the limiting head 32 is restrained by the capturing ring 22 and moves proximally, as shown in fig. 4d and 5 a.

In a first embodiment, the repair system further comprises a delivery catheter 4, the delivery catheter 4 comprising a loading sheath 41 and a support 42 connected to the double penetration structure 1; the catching rod 21 is also fitted in the loading sheath 41.

In the first embodiment, in a natural state, a tangent line at a start point and a tangent line at an end point of the double puncture structure 1 are parallel or form an acute angle, and the double puncture structure 1 is substantially in a shape of "J" or "U" or "C", as shown in fig. 2 b; the double puncture structure 1 is linear or arc-shaped when being preloaded in the loading sheath 41, and the double puncture structure 1 is naturally pushed out of the loading sheath 41 by the supporting member 42.

In the first embodiment, during the proximal movement of the restraining head 32 along with the capturing rod 21, the repairing ring 33 moves distally, and the restraining head 32 passes through the repairing ring 33, as shown in fig. 5b to 5 e; and, the repair loop 33 starts to shrink after touching the first puncture start point until the repair loop 33 pulls or pulls two punctured pieces of endocardial tissue to one place, as shown in fig. 6a to 6 d.

In the first embodiment, the repairing unit 3 or the connecting member 31 is a polymer wire.

In the first embodiment, the double puncture structure 1 brings the restriction head 32 from the right atrium to the left atrium during the first puncture; at the time of the second puncture, the double puncture structure 1 brings the restriction head 32 from the left atrium to the right atrium.

In the first embodiment, the capturing ring 22 enters the loading sheath 41 under the movement of the capturing rod 21.

In the first embodiment, the direction of the first puncture of the double puncture structure 1 is from the proximal end to the distal end, and the direction of the second puncture of the double puncture structure 1 is from the distal end to the proximal end.

In the first embodiment, the first puncture of the double puncture structure 1 is performed from the right atrium to the left atrium through the secondary septum, and the second puncture of the double puncture structure 1 is performed from the left atrium to the right atrium through the primary septum.

An exemplary operation procedure of the repair system of the first embodiment is as follows:

1. the delivery system is advanced into the right atrium by transfemoral approach, with loading sheath 41 against the secondary septum, as shown in fig. 3a, and then manipulating the support member 42 to eject the double-piercing structure 1, the distal end of the double-piercing structure 1 piercing the secondary septum and carrying the restriction head 32 into the left atrium, completing the first piercing of the double-piercing structure 1, as shown in fig. 3b and 3 c;

2. operating the capture device 2 so that the capture ring 22 comes out of the loading sheath 41 and returns to the original state, as shown in fig. 4a, the capture ring 22 butts against the primary septum, the support member 42 is pulled to drive the double puncture structure 1 to move proximally, the distal end of the double puncture structure 1 returns to the right atrium from the left atrium and pierces the primary septum while the restriction head 32 returns to the right atrium, as shown in fig. 4b and 4c, completing the second puncture of the double puncture structure 1, and then recovering the double puncture structure 1, as shown in fig. 4 d;

3. operating the capturing device 2 to move proximally, capturing the limiting head 32 into the capturing ring 22, pulling the capturing rod 21 to move proximally, moving the limiting head 32 proximally along with the capturing ring 22, moving the repairing ring 33 distally under the driving of the connecting piece 31, and enabling the limiting head 32 to pass through the repairing ring 33 in the pulling process, as shown in fig. 5 a-5 e;

4. pulling the capture rod 21 continuously to move proximally, operating the loading sheath 41 to move proximally when the repair loop 33 approaches the first puncture start point, as shown in fig. 6a, then the repair loop 33 touches the first puncture start point and starts to shrink until the repair loop 33 pulls or pulls two punctured pieces of endocardial tissue together, knotting of the repair loop 33 is completed, and the capture rod 21 is not pulled any more, as shown in fig. 6b to 6 d;

5. the delivery catheter 4 is retrieved and the implantation is completed as shown in fig. 6 e.

The foregoing description of several embodiments of the application has been presented for the purposes of illustration. It is not intended to be exhaustive or to limit the application to the precise configuration, construction and/or steps disclosed, and obviously many modifications and variations are possible in light of the above teaching. The scope of the application and all equivalents are intended to be defined by the appended claims.

Claims (11)

1. The utility model provides a repair system, includes two puncture structures, arresting device and with the repair unit that two puncture structures are connected, its characterized in that: the double-puncture structure is used for guiding the repair unit, and can pass through the tissue to be repaired back and forth in the repair process; the capture device is arranged at the first puncture starting point side of the double puncture structure and props against tissues in the repair process, provides supporting force for the tissues punctured for the second time of the double puncture structure, and captures the repair unit after the second puncture.

2. A repair system according to claim 1, wherein: the capturing device comprises a capturing rod and a capturing ring connected to the distal end of the capturing rod; in addition, in a natural state, the capturing rod and the capturing ring are not positioned on the same plane.

3. A repair system according to claim 2, wherein: the repair unit comprises a connecting piece and a limiting head arranged at the far end of the connecting piece, and the limiting head is connected with the double-puncture structure during preassembly.

4. A repair system according to claim 3, wherein: the connecting piece forms or is equipped with the repair circle in the proximal end, the repair circle is in space cover to establish the capture pole is outside.

5. A repair system according to claim 2 or 3, wherein: before the second puncture of the double puncture structure, the whole or the distal end part of the capturing ring is propped against the tissue; and, in the projection direction of the capture ring, the distal end of the double puncture structure is located within the capture ring.

6. A repair system according to claim 3, wherein: the limiting head is separated from the double-puncture structure after the second puncture is completed, and the limiting head is positioned in the capturing ring in the projection direction of the capturing ring.

7. A repair system according to claim 3, wherein: after the limiting head is separated from the double-puncture structure, the capture rod is pulled, so that the limiting head is restrained by the capture ring and moves towards the proximal end.

8. A repair system according to claim 3, wherein: the repair system further includes a delivery catheter including a loading sheath and a support connected to the double penetration structure; and the catching rod is also sleeved in the loading sheath.

9. A repair system according to claim 8, wherein: in a natural state, a tangent line at the starting point and a tangent line at the ending point of the double-puncture structure are parallel or form an acute angle, and the double-puncture structure is in a J shape or a U shape or a C shape or an M shape or a W shape; and the double puncture structure is in a linear or arc shape when being preloaded in the loading sheath, and is in a preset state after being pushed out of the loading sheath by the supporting piece.

10. A repair system according to claim 4, wherein: during proximal movement of the restraining head with the capture rod, the prosthetic ring moves distally, the restraining head passing through the prosthetic ring; and, the repair loop begins to shrink after approaching or touching the first puncture start point until the repair loop pulls or pulls two punctured pieces of endocardial tissue into one place.

11. A repair system according to claim 3, wherein: the repair unit or the connecting piece is a polymer line.