Retrieval line retrieval device for heart valve prosthesis and its delivery device

Abstract

The present application relates to the technical field of medical devices, and provides a recovery line recovery device for a heart valve prosthesis and a conveying device thereof, wherein the recovery line recovery device for a heart valve prosthesis comprises: a main body, a retractable line assembly arranged on the main body; the retractable line assembly comprises a main rotating member for synchronously driving several retractable lines and an auxiliary adjusting member for driving a retractable line, the auxiliary adjusting member comprises a line adjusting part, the main rotating member comprises a winding part, and the line adjusting part and the winding part are respectively located at different positions on the axial direction of the main body. Through the technical solution of the present application, the implantation position of the heart valve prosthesis can be fine-tuned to improve the accuracy of the implantation of the heart valve prosthesis.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a recovery wire recovery device for a heart valve prosthesis and a delivery device thereof. Background Art

[0002] Valvular heart disease is one of the most common heart diseases in my country. In recent years, with the aging of the population, valvular degeneration (including calcification and myxoid degeneration) and metabolic valvular damage have also increased in my country.

[0003] Compared with the traditional method of cutting open the lesion site of the human body through surgery, at present, more interventional treatment is used to deliver the interventional device (such as artificial heart valve stent) to the lesion site of the human body through the interventional device delivery device, and then withdraw it, so that the interventional device stays at the lesion site of the human body to replace the lesion of the human organ. Then replacing the interventional device can greatly reduce the pain of the patient.

[0004] During interventional valve treatment, an interventional instrument delivery device is required to deliver, control the shape and release the heart valve prosthesis. When the implantation position of the heart valve prosthesis is inaccurate, it is sometimes necessary to fine-tune the position of the part of the heart valve prosthesis relative to the heart. However, in the prior art, it is not easy to adjust the position of the part of the heart valve prosthesis relative to the heart, which is inconvenient for medical staff to operate, thereby increasing the risk of surgery and reducing the success rate of surgery. Summary of the invention

[0005] The technical problem to be solved by the present application is to provide a heart valve prosthesis recovery line recovery device and a delivery device thereof, which can fine-tune the implantation position of the heart valve prosthesis to improve the accuracy of the implantation of the heart valve prosthesis.

[0006] In order to solve the above technical problems, this application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a recovery wire recovery device for a heart valve prosthesis, comprising: a main body, and a retractable wire assembly arranged on the main body; the retractable wire assembly comprises a main rotating member for synchronously driving several recovery wires and an auxiliary adjusting member for driving one of the recovery wires, the auxiliary adjusting member comprises a wire adjusting portion, the main rotating member comprises a wire winding portion, and the wire adjusting portion and the wire winding portion are respectively located at different positions on the axial direction of the main body.

[0008] As an embodiment, the line adjusting portion is provided with a first through hole for accommodating the recovery line to pass through, and the line adjusting portion can rotate relative to the body to adjust the position or state of the heart valve prosthesis through the recovery line.

[0009] As an implementation manner, the line adjusting portion is a columnar structure, and the auxiliary adjusting member includes a driving portion, the driving portion is fixedly connected to the line adjusting portion, and a radial dimension of the driving portion is greater than a radial dimension of the line adjusting portion.

[0010] As an implementation mode, the auxiliary adjustment member is mounted on the main body via a one-way rotating body, and the one-way rotating body is located on a side opposite to the driving part.

[0011] As an implementation manner, the number of the auxiliary adjustment members is three.

[0012] As an implementation mode, the three auxiliary adjustment members are arranged in a staggered manner.

[0013] As an embodiment, the three auxiliary adjustment parts include a first auxiliary adjustment part and two second auxiliary adjustment parts, wherein the first auxiliary adjustment part and the two second auxiliary adjustment parts are arranged at intervals along the direction from the distal end to the proximal end of the body, and the connecting lines from the first auxiliary adjustment part to the two second auxiliary adjustment parts are equal.

[0014] As an implementation mode, the wire winding portion and the wire adjusting portion are mounted on the main body perpendicularly to each other.

[0015] As an embodiment, the main body includes a cover body and a recovery handle, and the cover body and the recovery handle are detachably connected.

[0016] As an embodiment, the main rotating member includes a rotating cap that can drive the entire winding portion to rotate, and the rotating cap is located at one end of the winding portion.

[0017] As an embodiment, the main rotating member further includes a positioning portion which is arranged on the rotating cap and faces a side of the cover body and is used to cooperate with the cover body to prevent the winding portion from rotating accidentally.

[0018] As an implementation manner, the positioning portion includes a locking gear, and the cover body is provided with a locking tooth groove matched with the locking gear.

[0019] As an embodiment, the cover body includes a convex cylinder extending along the extension direction of the winding portion and protruding toward one side of the rotating cap, and the locking tooth groove is provided on the inner wall of the convex cylinder.

[0020] As an embodiment, the winding part is a rod-shaped structure, the cover body is provided with a first connecting hole, the winding part is rotatably connected to the cover body through the first connecting hole, and the winding part is provided with a protrusion or a second through hole for connecting the recovery line.

[0021] As an implementation manner, a flange is provided at one end of the winding portion, the flange is located on a side opposite to the rotating cap, and a diameter of the flange is greater than a diameter of the first connecting hole.

[0022] As an embodiment, the convex cylinder is provided with a second connecting hole, the second connecting hole and the first connecting hole are located on the same axis, and the winding portion passes through the first connecting hole and the second connecting hole to be threadedly connected with the rotating cap.

[0023] As an embodiment, an extension block extending toward the proximal end of the cover body is provided in the cover body, and a first installation groove and a second installation groove for installing the one-way rotating body are respectively provided on the extension block and the recovery handle.

[0024] As an embodiment, the recovery handle is provided with a threading channel for guiding the recovery line to pass out, and the cover body is provided with a plurality of threading holes on one side facing the threading channel for guiding the recovery line to pass into the cover body.

[0025] In a second aspect, the present application introduces a heart valve prosthesis delivery device, comprising: a main handle, and a heart valve prosthesis recovery line recovery device as described in the first aspect, wherein the body is arranged at the proximal end of the main handle and is detachably connected to the main handle.

[0026] As an embodiment, it includes a heart valve prosthesis, multiple recovery lines respectively pass through multiple connecting ring groups on the heart valve prosthesis, and the auxiliary adjustment member can rotate a certain angle relative to the body to adjust the position or state of the heart valve prosthesis through one of the recovery lines.

[0027] The technical solution of this application has the following effects:

[0028] 1. The recovery wire recovery device comprises a body and a retractable wire assembly arranged on the body, wherein the retractable wire assembly comprises a main rotating member, the main rotating member can synchronously drive a plurality of recovery wires, the main rotating member comprises a winding portion, so that when the main rotating member rotates relative to the body, the recovery wire can be wound on the winding portion, thereby realizing the recovery or release of the heart valve prosthesis by the retractable wire assembly;

[0029] The retractable wire assembly also includes an auxiliary adjustment member capable of driving a retrieval wire, the auxiliary adjustment member including a wire adjustment portion, the wire adjustment portion can be used to pull the corresponding retrieval wire to play an auxiliary force application role on the heart valve prosthesis, and the retrieval wire further pulls the heart valve prosthesis, thereby achieving fine adjustment of the position of a part of the heart valve prosthesis relative to the heart, thereby improving the accuracy of the implantation of the heart valve prosthesis;

[0030] In addition, the wire adjusting portion and the wire winding portion are respectively located at different positions on the axial direction of the main body, so that the auxiliary adjusting part and the main rotating part do not interfere with each other during operation, avoiding the problem of being unable to recover and release the heart valve prosthesis and being unable to fine-tune the position of the heart valve prosthesis relative to the heart.

[0031] 2. The main rotating part includes a positioning part which is arranged on the rotating cap and cooperates with the cover body to prevent the winding part from accidentally rotating. By setting the positioning part, the rod body can be prevented from accidentally rotating, and further, medical staff can be prevented from misoperating the delivery device, which may cause the heart valve prosthesis to be released prematurely.

[0032] 3. The auxiliary adjusting part is installed on the main body through a one-way rotating body, so that the auxiliary adjusting part can fine-tune the position of the heart valve prosthesis by unidirectional rotation of the one-way rotating part relative to the main body, and after adjusting the position of the heart valve prosthesis, the one-way rotating part can also lock the auxiliary adjusting part to prevent the auxiliary adjusting part from rotating and causing failure to adjust the position of the heart valve prosthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a recycling line recycling device provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a top view of a recovery line recovery device provided in an embodiment of the present application;

[0036] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0037] Figure 4 A schematic diagram of the explosion structure of the recovery line recovery device provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of an exploded structure of a recovery line recovery device provided in an embodiment of the present application from one perspective;

[0039] Figure 6 A schematic diagram of an exploded structure of a recovery line recovery device provided in an embodiment of the present application from another perspective;

[0040] Figure 7 A schematic diagram of the structure of the conveying device provided in an embodiment of the present application.

[0041] Icon: 100-main body; 1-cover body; 12-extension block; 13-first mounting groove; 14-threading hole; 15-first connecting hole; 16-second connecting hole; 17-convex cylinder; 18-third through hole; 2-recovery handle; 21-second mounting groove; 22-threading channel; 3-wire adjustment part; 31-first through hole; 32-driving part; 4-winding part; 41-flange; 42-second through hole; 5-one-way rotating body; 6-recovery line; 7-rotating cap; 71-positioning part; 8-conveying device; 81-main handle; 82-outer tube. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0043] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. At the same time, in the description of this application, the term "distal end" refers to the end of the components in the stent delivery handle close to the heart tissue, and the "proximal end" refers to the end of the stent delivery handle close to the operator. The terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] like Figure 1 and 7 As shown, on the first aspect, the embodiment of the present application introduces a recovery line recovery device for a heart valve prosthesis, which is installed at the proximal end of the main handle 81 of the conveying device 8, so that medical staff can hold it and operate it conveniently. In addition, the recovery line recovery device can adjust the corresponding recovery line 6 through an auxiliary adjustment member, and further fine-tune the position of the heart valve prosthesis to improve the accuracy of the heart valve prosthesis implantation; on the other hand, the heart valve prosthesis can be released by rotating the main rotating member relative to the main body 100, and the recovery line 6 can be recovered after the heart valve prosthesis is released.

[0045] like Figure 7 As shown, the recovery line recovery device includes a body 100 and a retractable line assembly disposed on the body 100. The body 100 is connected to the main handle 81. The retractable line assembly is used to control the recovery line 6. The retractable line assembly is used to control the release or retraction of the recovery line 6. In the process of releasing the heart valve prosthesis, the recovery line 6 needs to be released by the retractable line assembly; when the heart valve prosthesis needs to be recovered and released again or after the release of the heart valve prosthesis is completed, the recovery line 6 needs to be retracted by the retractable line assembly. Thus, the release of the heart valve prosthesis and the recovery of the recovery line 6 after the release are achieved, which is convenient for medical staff to operate and improves the success rate of the operation.

[0046] like Figures 4 to 6 As shown, the retractable wire assembly includes a main rotating member, which can rotate relative to the main body 100 and synchronously drive multiple retractable wires 6 during the rotation process. The multiple retractable wires 6 are all connected to the main rotating member to prevent the retractable wires 6 from falling off;

[0047] The body 100 is extended from the distal end to the proximal end, and the axial direction of the body 100 is consistent with the extension direction of the body 100;

[0048] Each recovery line 6 passes through the heart valve prosthesis, and the main rotating member includes a winding portion 4. By providing the winding portion 4, when the delivery device releases the heart valve prosthesis, the main rotating member rotates clockwise relative to the main body 100 in a horizontal direction perpendicular to the axial direction of the main body 100, and the recovery line 6 is loosened from the winding portion 4; when the heart valve prosthesis needs to be recovered again or the heart valve prosthesis is released, the main rotating member rotates counterclockwise relative to the main body 100, and the recovery line 6 is wound around the outer periphery of the winding portion 4, which is convenient for medical staff to operate, so that the medical staff can realize the release and recovery of the heart valve prosthesis by operating the main rotating member;

[0049] Of course, the main rotating part is perpendicular to the axial direction of the main body 100 in the horizontal direction, and can also rotate counterclockwise relative to the main body 100, and the recovery line 6 is loosened from the winding part 4; when the heart valve prosthesis needs to be recovered again or the heart valve prosthesis is released, the main rotating part rotates clockwise relative to the main body 100, and the recovery line 6 is wound around the outer periphery of the winding part 4. The embodiments of the present application do not make specific limitations.

[0050] The retractable wire assembly also includes an auxiliary adjusting member, which can drive a corresponding recovery wire 6, and the auxiliary adjusting member includes a wire adjusting portion 3. When the implantation position of the heart valve prosthesis is inaccurate, the wire adjusting portion 3 can provide a tensioning force to the recovery wire 6 by adjusting the wire adjusting portion 3, thereby fine-tuning the local position of the heart valve prosthesis to improve the accuracy of the implantation of the heart valve prosthesis; the wire adjusting portion 3 and the winding portion 4 are respectively located at different axial positions of the main body 100 to avoid interference of the winding portion 4 with the wire adjusting portion 3 when the wire adjusting portion 3 is working; or the wire adjusting portion 3 interferes with the winding portion 4 when the wire winding portion 4 is working, thereby ensuring that the wire adjusting portion 3 can smoothly adjust the position of the heart valve prosthesis and the recovery wire 6 can be loosened from the winding portion 4 or wound around the winding portion 4.

[0051] Optionally, the wire adjusting portion 3 and the wire winding portion 4 are spaced apart from each other in the direction from the distal end to the proximal end of the main body 100, with the wire adjusting portion 3 being arranged close to the distal end of the main body 100 and the wire winding portion 4 being arranged close to the proximal end of the main body 100, so that when the wire winding portion 4 pays out or recycles the recovery wire 6, the recovery wire 6 will move in the first through hole 31 of the wire adjusting portion 3 and will not be affected by the wire adjusting portion 3.

[0052] Optionally, the number of recovery lines 6 corresponds to the number of auxiliary adjustment members, and a plurality of auxiliary adjustment members respectively adjust one recovery line 6 .

[0053] like Figure 7 As shown, the delivery device 8 includes a main handle 81, an outer tube 82 and an inner tube. The outer tube 82 and the inner tube constitute an inner tube assembly. The outer tube 82 and the inner tube are both connected to the main handle 81. The outer tube 82 is sleeved on the outer circumference of the inner tube. The inner tube extends inside the outer tube 82. A accommodating space for accommodating a heart valve prosthesis is provided between the outer tube 82 and the inner tube. When the heart valve prosthesis is not implanted, the heart valve prosthesis is located in the accommodating space.

[0054] like Figure 6 As shown, one end of the recovery line 6 passes through the first through hole 31 and is connected to the winding part 4, and the other end passes through the connecting ring on the heart valve prosthesis and is connected to other components on the conveying device 8. When the implantation position of the heart valve prosthesis is inaccurate and the heart valve prosthesis needs to be re-accommodated into the accommodating space formed by the inner tube assembly, the main rotating part can be controlled to rotate relative to the main body 100 so that the recovery line 6 is wound around the outer surface of the winding part 4, tightening the heart valve prosthesis, so that the connecting ring on the heart valve prosthesis can be pulled back to the position abutting against the fixed head on the conveying device 8, thereby completing the recovery of the heart valve prosthesis.

[0055] like Figure 6 As shown, as an embodiment, the line adjusting portion 3 is provided with a first through hole 31 for accommodating a recovery line 6 to pass through, and the line adjusting portion 3 can rotate relative to the main body 100, so that the recovery line 6 generates a pulling force on the heart valve prosthesis to adjust the position or state of the heart valve prosthesis.

[0056] Optionally, the line adjustment portion 3 is columnar, and there is a requirement for the rotation angle of the line adjustment portion 3 when rotating relative to the main body 100, that is, it cannot rotate more than 180 degrees so that the recovery line 6 is wrapped around the line adjustment portion 3. If the line adjustment portion 3 rotates more than 180 degrees relative to the main body 100, the main rotating part will fail, and the operation of winding and releasing the recovery line 6 cannot be completed. In a preferred embodiment, the rotation angle of the line adjustment portion 3 relative to the main body 100 is less than 90 degrees, so that the corresponding part of the recovery line 6 is attached to the local periphery of the line adjustment portion 3, providing tension to the recovery line 6, and the recovery line 6 further adjusts the position or state of the heart valve prosthesis.

[0057] like Figure 1 and 3 As shown, as an embodiment, the line adjusting portion 3 is a columnar structure, which is convenient for adjusting the recovery line 6, and the auxiliary adjusting member includes a driving portion 32, which is fixedly connected to the line adjusting portion 3, and the radial dimension of the driving portion 32 is larger than the radial dimension of the line adjusting portion 3, so that medical staff can easily operate the driving portion 32 to rotate the auxiliary adjusting member relative to the main body 100 to fine-tune the position of the heart valve prosthesis.

[0058] Optionally, the driving portion 32 and the line adjusting portion 3 may be integrally formed or threadedly connected.

[0059] like Figure 4 As shown, as an embodiment, the auxiliary adjusting member is installed on the main body 100 via a one-way rotating body 5, and the one-way rotating body 5 is located on the opposite side of the driving part 32. By setting the one-way rotating body 5, the auxiliary adjusting member can rotate unidirectionally relative to the main body 100, and the recovery line 6 is tightened accordingly to achieve fine-tuning of the local position of the heart valve prosthesis.

[0060] Optionally, one-way rotation means that the auxiliary adjusting member can rotate in one direction relative to the main body 100 through the one-way rotating body 5, but cannot rotate in the opposite direction. For example, the auxiliary adjusting member can rotate in a clockwise direction relative to the main body 100 in the vertical direction, but cannot rotate in the counterclockwise direction; or, the auxiliary adjusting member can rotate in a counterclockwise direction relative to the main body 100 in the vertical direction, but cannot rotate in the clockwise direction. The specific rotation direction of the auxiliary adjusting member relative to the main body 100 can be adjusted according to actual use, and the embodiments of the present application do not make specific limitations.

[0061] Optionally, the one-way rotating body 5 is a one-way bearing, the inner ring of the one-way bearing is tightly connected to the line adjustment part 3, and the outer ring is connected to the main body 100. Setting the one-way rotating body 5 as a one-way bearing, on the one hand, can make the auxiliary adjusting part rotate unidirectionally relative to the main body 100 along the set direction of the one-way bearing, on the other hand, after the auxiliary adjusting part rotates unidirectionally relative to the main body 100 through the one-way bearing, if the auxiliary adjusting part rotates in the opposite direction, the one-way bearing will have a locking function, that is, the one-way bearing will lock the auxiliary adjusting part to prevent the auxiliary adjusting part from rotating and causing the adjustment of the position of the heart valve prosthesis to fail; in addition, it is also convenient for medical staff to operate. After the auxiliary adjusting part rotates relative to the main body 100, no more medical staff is required to control the auxiliary adjusting part.

[0062] Optionally, rotation means that the auxiliary adjustment member rotates in a certain direction relative to the main body 100 and then rotates in an opposite direction.

[0063] As an embodiment, the number of auxiliary adjusting parts is three, each of which controls a recovery line 6, and each recovery line 6 corresponds to a connecting ring passing through the heart valve prosthesis. When the position of the heart valve prosthesis needs to be fine-tuned, the corresponding auxiliary adjusting part can be controlled individually, and the auxiliary adjusting part can generate tension on a recovery line 6 passing through it, and further pull the connecting ring of the heart valve prosthesis, so as to achieve fine-tuning of the position of the heart valve prosthesis, adjust the position or state of the heart valve prosthesis, and improve the accuracy of implantation.

[0064] As an implementation mode, the three auxiliary adjustment parts are arranged in a staggered manner so that each auxiliary adjustment part has an independent operating space, which makes it convenient for medical staff to operate each auxiliary adjustment part individually.

[0065] As an embodiment, the three auxiliary adjusting parts include a first auxiliary adjusting part and two second auxiliary adjusting parts, wherein the first auxiliary adjusting part and the two second auxiliary adjusting parts are arranged at intervals along the direction from the distal end to the proximal end of the main body 100, so that the first auxiliary adjusting part and the two second auxiliary adjusting parts are staggered with each other to leave operating space; at the same time, the connecting lines from the first auxiliary adjusting part to the two second auxiliary adjusting parts are equal, so that the main rotating part can ensure the symmetry of the release of the heart valve prosthesis during the process of releasing or reeling in the wire, thereby improving the accuracy of implantation.

[0066] Optionally, the first auxiliary adjustment member is arranged close to the distal end of the main body 100, and the two second auxiliary adjustment members are arranged close to the proximal end of the main body 100. Of course, the first auxiliary adjustment member can also be arranged close to the proximal end of the main body 100, and the two second auxiliary adjustment members are arranged close to the distal end of the main body 100.

[0067] As a possible implementation, the three auxiliary adjustment members may also be arranged in a line at intervals perpendicular to the axial direction of the main body 100 .

[0068] like Figure 6 As shown, as an implementation mode, the wire winding portion 4 and the wire adjusting portion 3 are mounted perpendicularly to each other on the main body 100, so that the wire winding portion 4 and the wire adjusting portion 3 can work independently of each other and are convenient for medical staff to operate.

[0069] Optionally, the winding part 4 is arranged perpendicular to the axial direction of the main body 100 in the horizontal direction, and the wire adjusting part 3 is arranged perpendicular to the axial direction of the main body 100 in the vertical direction, so that medical staff can respectively operate the winding part 4 and the wire adjusting part 3 at different angles. At the same time, it can also ensure that the winding part 4 and the wire adjusting part 3 do not affect each other when working, which is convenient for medical staff to operate.

[0070] like Figure 6As shown, as an embodiment, the main body 100 includes a recovery handle 2 and a cover body 1 detachably connected to the recovery handle 2, so as to facilitate the assembly of other parts in the cover body 1; the winding part 4 passes through the cover body 1 perpendicular to the axial direction of the recovery handle 2, so as to facilitate the operation of the medical staff, that is, one hand holds the recovery handle 2, and the other hand is used to drive the winding part 4 to rotate, which is ergonomic; in addition, the three auxiliary adjustment parts are arranged perpendicular to the axial direction of the cover body 1, which is also convenient for the medical staff to operate.

[0071] Optionally, three third through holes 18 are respectively provided on the cover body 1 for guiding the wire adjusting portion 3 to pass through.

[0072] like Figure 2 and 6 As shown, as an embodiment, the main rotating part includes a rotating cap 7 that can drive the winding part 4 to rotate. The rotating cap 7 is located at one end of the winding part 4, which is convenient for medical staff to drive the winding part 4 to rotate through the rotating cap 7, thereby improving operational convenience.

[0073] Optionally, in order to further increase the friction between the rotating cap 7 and the medical staff, a plurality of grooves are provided on the circumference of the rotating cap 7 .

[0074] Optionally, the rotating cap 7 is connected to the winding portion 4 via threads.

[0075] like Figure 6 As shown, as an embodiment, the main rotating part also includes a positioning portion 71 arranged on the rotating cap 7 for cooperating with the cover body 1 to prevent the winding portion 4 from accidentally rotating. By setting the positioning portion 71, and the positioning portion 71 is set toward one side of the cover body 1, the positioning portion 71 cooperates with the cover body 1 to achieve relative stillness of the winding portion 4 and the cover body 1, thereby avoiding misoperation by medical staff, which causes the winding portion 4 to rotate relative to the cover body 1 and release the heart valve prosthesis prematurely.

[0076] Optionally, the positioning portion 71 and the rotating cap 7 may be integrally formed, or may be connected in a detachable manner, such as by threading or snapping.

[0077] As an embodiment, the positioning portion 71 includes a locking gear, and the cover body 1 is provided with a locking tooth groove that cooperates with the locking gear, that is, the cover body 1 includes a locking tooth groove, and the locking gear is engaged with the locking tooth groove to prevent the winding portion 4 from rotating accidentally relative to the cover body 1.

[0078] like Figure 1 and 2 As shown, as an embodiment, the cover body 1 includes a convex cylinder 17 which protrudes along the extension direction of the rod body and toward one side of the rotating cap 7, and the inner wall of the convex cylinder 17 is provided with a locking tooth groove. By providing the convex cylinder 17, the locking gear on the rotating cap 7 is conveniently engaged with the locking tooth groove on the inner wall of the convex cylinder 17, which can further prevent the rod body from rotating accidentally.

[0079] like Figure 5 As shown, as an embodiment, the winding portion 4 is a rod-shaped structure, and a first connecting hole 15 is provided on one side of the cover body 1. The winding portion 4 can pass through the first connecting hole 15 and can rotate relative to the cover body 1; a protrusion is provided on the outer surface of the winding portion 4, and one end of the recovery line 6 is wound around the protrusion, thereby realizing the connection between the recovery line 6 and the winding portion 4. Of course, at least two second through holes 42 can also be provided on the outer surface of the winding portion 4, that is, one end of the recovery line 6 passes through two second through holes 42 in sequence, and is knotted after passing through the last second through hole 42, thereby also realizing the connection between the recovery line 6 and the winding portion 4.

[0080] like Figure 2 and 6 As shown, as an embodiment, a flange 41 is provided at one end of the winding portion 4, and the flange 41 is fixedly connected to the winding portion 4. The flange 41 is located on the side opposite to the rotating cap 7, and the diameter of the flange 41 is larger than the diameter of the first connecting hole 15, thereby preventing the winding portion 4 from falling off from the position of the first connecting hole 15.

[0081] Optionally, the flange 41 and the winding portion 4 may be integrally formed or threadedly connected.

[0082] like Figure 4 As shown, as an embodiment, the convex cylinder 17 is provided with a second connecting hole 16, and the second connecting hole 16 is located on the side opposite to the first connecting hole 15 and is coaxially arranged with the first connecting hole 15, so as to facilitate the winding part 4 to pass through the first connecting hole 15 and the second connecting hole 16, and be threadedly connected with the rotating cap 7, so that the rotating cap 7 can drive the winding part 4 to rotate relative to the cover body 1.

[0083] like Figure 3 and 5 As shown, as an embodiment, an extension block 12 extending from the distal end of the cover body 1 toward the proximal end is provided in the cover body 1, and a first mounting groove 13 for mounting the one-way rotating body 5 is provided on the extension block 12. By setting the extension block 12, the one-way rotating body 5 can be installed in the first mounting groove 13, and provide a stable support for the auxiliary adjusting member; at the same time, two second mounting grooves 21 are also provided on the recovery handle 2, which are also used to mount the one-way rotating member, so that the one-way rotating member can be installed in the second mounting groove 21, and provide a stable support for the auxiliary adjusting member.

[0084] Optionally, the number of the one-way rotating bodies 5 is three, and therefore, two second mounting grooves 21 are provided on the recovery handle 2 , and one first mounting groove 13 is provided on the cover body 1 .

[0085] like Figure 6As shown, as an embodiment, the recovery handle 2 is provided with a threading channel 22 for guiding the recovery line 6 to pass out, and a plurality of threading holes 14 are also provided on the distal side of the cover body 1. The threading holes 14 are set in three numbers. Each recovery line 6 passes through the threading channel 22 and passes through the corresponding threading hole 14 respectively, and then passes through the three line adjusting parts 3 in turn, and is finally fixedly connected with the winding part 4.

[0086] like Figure 7 As shown, in the second aspect, the embodiment of the present application also introduces a heart valve prosthesis delivery device, including: a main handle 81, and a recovery line recovery device for the heart valve prosthesis introduced in the first aspect, the main body 100 is arranged at the proximal end of the main handle 81, and is detachably connected to the main handle 81, thereby facilitating the assembly between the main body 100 and the main handle 81.

[0087] As an embodiment, the delivery device 8 includes a heart valve prosthesis, which includes multiple connecting rings, and multiple recovery lines 6 respectively pass through corresponding connecting ring groups. The auxiliary adjustment member can rotate a certain angle relative to the main body 100, so as to adjust the position or state of the heart valve prosthesis through the corresponding recovery lines 6.

[0088] Optionally, the connecting ring group includes two connecting rings, and the heart valve prosthesis includes three connecting ring groups. One ends of the three recovery lines 6 pass through the corresponding connecting ring groups respectively and are connected to other components in the conveying device 8, and the other ends pass through the corresponding wire adjustment part 3, and are finally connected to the winding part 4. The auxiliary adjustment part is used to adjust a certain angle relative to the main body 100, thereby achieving the adjustment of the position or state of the heart valve prosthesis.

[0089] Optionally, the auxiliary adjusting member can rotate relative to the main body 100 by a certain angle, including the auxiliary adjusting member rotating by an angle not exceeding 180 degrees, and as a preferred embodiment, not exceeding 90 degrees.

[0090] When the heart valve prosthesis is in the expanded state, if the implantation position is not accurate, sometimes the medical staff needs to re-accommodate it into the accommodation space. At this time, the main rotating member can be driven to rotate relative to the main body 100, and the multiple recovery wires 6 are wound around the outer surface of the winding part 4, and the multiple recovery wires 6 pull the proximal end of the heart valve prosthesis, so that the proximal end of the heart valve prosthesis is in a contracted state, and then moves to the distal end of the delivery device 8 through the outer tube 82, so that the heart valve prosthesis is re-accommodated into the accommodation space;

[0091] Of course, in other cases, after the heart valve prosthesis is released, the multiple recovery lines 6 are separated from the heart valve prosthesis, and the multiple recovery lines 6 are successfully recovered by the main rotating member rotating relative to the main body 100 .

[0092] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0093] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0094] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A recovery wire recovery device for a heart valve prosthesis, characterized in that: include: A main body and a wire-retracting and -releasing assembly disposed on the main body; The retractable wire assembly includes a main rotating member for synchronously driving a plurality of retractable wires and an auxiliary adjusting member for driving one retractable wire, wherein the auxiliary adjusting member includes a wire adjusting portion, and the main rotating member includes a wire winding portion, wherein the wire adjusting portion and the wire winding portion are respectively located at different positions in the axial direction of the body; The auxiliary adjustment member includes a driving portion, and the driving portion is fixedly connected to the line adjustment portion; The driving part protrudes from the main body.

2. The recycling line recovery device according to claim 1, characterized in that: The line adjusting portion is provided with a first through hole for accommodating the recovery line to pass through, and the line adjusting portion can rotate relative to the body to adjust the position or state of the heart valve prosthesis through the recovery line.

3. The recycling line recovery device according to claim 2, characterized in that: The line adjusting portion is a columnar structure, and the radial dimension of the driving portion is larger than the radial dimension of the line adjusting portion.

4. The recycling line recovery device according to claim 3, characterized in that: The auxiliary adjustment member is mounted on the main body via a one-way rotating body, and the one-way rotating body is located on a side opposite to the driving part.

5. The recycling line recovery device according to any one of claims 1 to 4, characterized in that: The number of the auxiliary adjustment members is three.

6. The recycling line recovery device according to claim 5, characterized in that: The three auxiliary adjustment members are arranged in a staggered manner.

7. The recycling line recovery device according to claim 6, characterized in that: The three auxiliary adjustment parts include a first auxiliary adjustment part and two second auxiliary adjustment parts, wherein the first auxiliary adjustment part and the two second auxiliary adjustment parts are arranged at intervals along the direction from the distal end to the proximal end of the body, and the connecting lines from the first auxiliary adjustment part to the two second auxiliary adjustment parts are equal.

8. The recycling line recovery device according to any one of claims 1 to 4, characterized in that: The wire winding part and the wire adjusting part are installed on the main body perpendicularly to each other.

9. The recycling line recovery device according to claim 4, characterized in that: The main body comprises a cover body and a recovery handle, and the cover body and the recovery handle are detachably connected.

10. The recycling line recovery device according to claim 9, characterized in that: The main rotating part includes a rotating cap which can drive the entire winding part to rotate, and the rotating cap is located at one end of the winding part.

11. The recycling line recovery device according to claim 10, characterized in that: The main rotating member also includes a positioning portion which is arranged on the rotating cap and faces one side of the cover body and is used to cooperate with the cover body to prevent the winding portion from rotating accidentally.

12. The recycling line recovery device according to claim 11, characterized in that: The positioning portion comprises a locking gear, and the cover body is provided with a locking tooth groove matched with the locking gear.

13. The recycling line recovery device according to claim 12, characterized in that: The cover body comprises a convex cylinder extending along the extension direction of the winding portion and protruding toward one side of the rotating cap, and the locking tooth groove is arranged on the inner wall of the convex cylinder.

14. The recycling line recovery device according to claim 13, characterized in that: The winding part is a rod-shaped structure, the cover body is provided with a first connecting hole, the winding part is rotatably connected to the cover body through the first connecting hole, and the winding part is provided with a protrusion or a second through hole for connecting the recovery line.

15. The recycling line recovery device according to claim 14, characterized in that: A flange is provided at one end of the winding portion, and the flange is located on a side opposite to the rotating cap, and a diameter of the flange is greater than a diameter of the first connecting hole.

16. The recycling line recovery device according to claim 14, characterized in that: The convex cylinder is provided with a second connecting hole, the second connecting hole and the first connecting hole are located on the same axis, and the winding portion passes through the first connecting hole and the second connecting hole and is threadedly connected to the rotating cap.

17. The recycling line recovery device according to any one of claims 9 to 16, characterized in that: An extension block extending toward the proximal end of the cover body is disposed in the cover body, and a first mounting groove and a second mounting groove for mounting the one-way rotating body are respectively disposed on the extension block and the recovery handle.

18. The recycling line recovery device according to any one of claims 9 to 16, characterized in that: The recovery handle is provided with a threading channel for guiding the recovery line to pass out, and the cover body is provided with a plurality of threading holes on one side facing the threading channel for guiding the recovery line to pass into the cover body.

19. A heart valve prosthesis delivery device, characterized in that: include: main handle; A recovery wire recovery device for a heart valve prosthesis as claimed in any one of claims 1 to 18, wherein the body is arranged at the proximal end of the main handle and is detachably connected to the main handle.

20. The conveying device according to claim 19, characterized in that It comprises a heart valve prosthesis, a plurality of recovery lines respectively passing through a plurality of connection ring groups on the heart valve prosthesis, and an auxiliary adjustment member can rotate at a certain angle relative to the body to adjust the position or state of the heart valve prosthesis through one of the recovery lines.

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