Retrieving device for retrieving connecting wire and heart valve prosthesis delivery device

Abstract

The present application relates to the technical field of medical instruments and provides a retrieving device for retrieving a connecting wire and a heart valve prosthesis delivery device, wherein the retrieving device for retrieving the connecting wire comprises: a retrieving body, a rod body assembled on the retrieving body, and a first single-rotation body for winding of the connecting wire. The first single-rotation body is rotatably arranged on the rod body and can axially move along with the rod body; the retrieving body is provided with an accommodating groove, the rod body penetrates through the accommodating groove, and the first single-rotation body can move along with the rod body in the accommodating groove; the retrieving body is provided with a stop structure for preventing the connecting wire from sliding off from the first single-rotation body. According to the technical scheme of the present application, in the process of retrieving the connecting wire, the risk of the connecting wire detaching from the first single-rotation body can be reduced, such that the operation convenience is improved for medical staff.

Description

Retrieval device for retrieving connecting wire and heart valve prosthesis delivery device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202410027346.4 filed with the Chinese Patent Office on January 8, 2024, entitled “Recovery device for recovering connecting wires and heart valve prosthesis delivery device”. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of medical devices, and in particular to a recovery device for recovering a connecting line and a heart valve prosthesis delivery device. Background Art

[0004] Heart valve 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 myxomatous degeneration, etc.) and metabolic valve damage have also increased in my country. At present, the implantation of heart valve prostheses through minimally invasive internal medicine surgery provides medical staff with a new treatment method with less trauma, fewer complications and faster postoperative recovery.

[0005] During valve treatment, a delivery device is needed to deliver the heart valve prosthesis, control its shape, and release it. However, when medical staff operate the delivery device, especially during the process of retrieving the connecting wire, the connecting wire may fall off and turn, resulting in failure to retrieve the heart valve prosthesis.

[0006] Summary of the Invention

[0007] The technical problems to be solved by this application include, for example, providing a recovery device for recovering the connecting wire and a heart valve prosthesis delivery device. During the process of recovering the connecting wire, the risk of the connecting wire falling off the first single rotating body can be reduced, thereby improving the convenience of operation for medical staff.

[0008] The present application provides a recovery device for recovering connecting wires, comprising: a recovery body, a rod body assembled on the recovery body, and a first single rotating body for winding the connecting wire; the first single rotating body is rotatably arranged on the rod body and can move axially with the rod body; the recovery body is provided with a receiving groove, the rod body passes through the receiving groove, and the first single rotating body can move with the rod body in the receiving groove; the recovery body is provided with a stop structure for preventing the connecting wire from slipping off the first single rotating body.

[0009] As an embodiment, the stop structure includes a stopper and a groove provided on the recovery body, the groove is communicated with the accommodating groove, and the stopper is embedded in the groove and partially protrudes toward the accommodating groove.

[0010] As an embodiment, the first single rotating body includes a first winding portion for winding a connecting wire, and the stopper is arranged in contact with the first winding portion.

[0011] As an embodiment, the stopper is a foam member or a silicone member.

[0012] As an embodiment, the recovery device includes a flange located at one end of the rod body, the flange is fixedly connected to the rod body, the recovery body includes a cover body and a recovery handle detachably connected to the cover body, the cover body is provided with the accommodating groove and the groove, and the cover body is provided with a first connecting hole for accommodating the rod body to pass through on the side facing the flange, and the diameter of the flange is larger than the diameter of the first connecting hole.

[0013] As an embodiment, a telescopic member is further provided between the flange and the cover body, two ends of the telescopic member are respectively in contact with the flange and the cover body, and the telescopic member is in a pre-tightened state.

[0014] As an embodiment, the recycling body further includes a support member, the support member is located in the accommodating groove and is connected to the cover body, and the support member is provided with the groove for accommodating the stopper.

[0015] As an embodiment, a notch is provided on the support member, the groove is recessed at the position of the notch, and the first single rotating body is embedded in the notch.

[0016] As an embodiment, the first single-rotating body can rotate unidirectionally relative to the rod body for line reeling, and the first single-rotating body includes a one-way rotating part and a first operating part connected to the one-way rotating part. The one-way rotating part is installed on the rod body, and the first operating part is assembled on the rod body through the one-way rotating part.

[0017] As an embodiment, the first operating member includes a first operating portion protruding from the recovery body and the first winding portion connected to the first operating portion, and the first winding portion is provided with a fixing portion for connecting the connecting wire.

[0018] As an embodiment, the first operating member is provided with a mounting groove penetrating the first operating portion and the first winding portion, and the one-way rotating member is located in the mounting groove.

[0019] As an embodiment, the one-way rotating member is a one-way bearing.

[0020] As an embodiment, the recovery device includes a stop block for preventing the one-way rotating member from slipping, and the stop block is arranged at the opening position of the installation groove.

[0021] As an embodiment, the recovery device further includes a second single rotating body and a third single rotating body, wherein the second single rotating body and the third single rotating body are both located on the rod body and can rotate in one direction relative to the rod body for reeling in the line.

[0022] As an embodiment, two snap-fit ​​grooves are provided at intervals on the outer surface of the rod body, and the recovery device also includes two snap-fit ​​parts, which correspond to the snap-fit ​​grooves, one of the snap-fit ​​parts is in contact with the third single rotating body, and the other snap-fit ​​part is in contact with the stop block.

[0023] As an embodiment, the first single rotator, the second single rotator and the third single rotator are arranged in sequence along the axial direction of the rod body, the second single rotator includes a second operating member, the third single rotator includes a third operating member, and the first operating member is provided with a plug-in groove for plugging with the second operating member on the side away from the stop structure; the second operating member is provided with a plug-in groove for plugging with the third operating member on the side away from the stop structure.

[0024] As an embodiment, the recovery device includes a rotating cap that can drive the rod body to rotate and move along an axial direction perpendicular to the recovery handle, and the rotating cap is located at the opposite end of the flange.

[0025] As an embodiment, the recovery device also includes a positioning portion arranged on the rotating cap to cooperate with the cover body to prevent the rod body from accidentally rotating; the positioning portion includes a locking gear, and the cover body is provided with a locking tooth groove adapted to the locking gear.

[0026] As an embodiment, the cover body includes a convex cylinder extending along the extension direction of the rod body and protruding toward one side of the rotating cap, and the locking tooth groove is provided on the inner wall of the convex cylinder.

[0027] 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 rod body passes through the first connecting hole and the second connecting hole and is threadedly connected to the rotating cap.

[0028] In addition, the present application provides a heart valve prosthesis delivery device, comprising a handle and the aforementioned recovery device for recovering the connecting line, wherein the recovery body is arranged at the proximal end of the handle.

[0029] As an embodiment, the recovery body is detachably connected to the handle.

[0030] The technical solution of this application has the following beneficial effects:

[0031] The first single swivel can be rotated relative to the rod body to wind the connecting line. A receiving groove is provided in the recovery body. The rod body passes through the receiving groove. The first single swivel is located in the receiving groove and can move axially with the rod body. A stop structure is provided on the recovery body to prevent the connecting line from falling off the first single swivel. When the rod body moves in a direction perpendicular to the axial direction of the recovery body to be locked or unlocked, it will drive the first single swivel to move synchronously. There will be movable space on both sides of the first single swivel in the receiving groove. The stop structure can reduce the risk of the connecting line falling off the first single swivel, thereby improving the convenience of operation and also improving the success rate of recovery of the connecting line. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. 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 relevant drawings can be obtained based on these drawings without creative work.

[0033] FIG1 is a schematic structural diagram of a recovery device provided in an embodiment of the present application;

[0034] FIG2 is a top view of a recovery device provided in an embodiment of the present application;

[0035] FIG3 is a schematic cross-sectional view of the structure taken along line AA in FIG2 ;

[0036] FIG4 is a schematic diagram of the explosion structure of the recovery device provided in an embodiment of the present application;

[0037] FIG5 is a schematic diagram of the exploded structure of the recovery device provided in an embodiment of the present application from different perspectives;

[0038] FIG6 is a schematic diagram of an exploded structure of a recovery device provided in an embodiment of the present application from another perspective;

[0039] FIG7 is a schematic diagram of an exploded structure of a recovery device provided in an embodiment of the present application from another perspective;

[0040] FIG8 is a schematic diagram of a partial explosion structure of a recovery device provided in an embodiment of the present application;

[0041] FIG9 is a schematic structural diagram of a conveying device provided in an embodiment of the present application.

[0042] Icons: 1-recovery body; 11-recovery handle; 111-threading channel; 12-cover; 121-threading hole; 122-movable opening; 123-first connecting hole; 124-second connecting hole; 125-convex cylinder; 126-locking tooth groove; 127-accommodating groove; 128-groove; 2-first single rotating body; 21-one-way rotating member; 22-first operating member; 221-fixing part; 222-first winding part; 223-insertion slot; 224- First operating part; 225-installing groove; 226-second through hole; 3-rod body; 31-flange; 32-clamping groove; 4-clamping member; 5-telescopic member; 6-rotating cap; 61-positioning part; 7-connecting line; 8-support member; 81-notch; 9-stop block; 10-conveyance device; 101-handle; 102-outer tube; 13-stop member; 14-second operating part; 141-second winding part; 15-third operating part; 151-third winding part. DETAILED DESCRIPTION

[0043] 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.

[0044] It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. Furthermore, in the description of this application, the term "distal end" refers to the end of the components in the handle that is closest to the cardiac tissue, and "proximal end" refers to the end of the handle that is closest to the operator. The terms "first" and "second" are used only to distinguish the descriptions and should not be understood to indicate or imply relative importance.

[0045] The embodiment of the present application provides a recovery device for recovering a connecting wire. The recovery device is provided with a stop structure, which can reduce the risk of the connecting wire 7 falling off, improve the success rate of recovering the connecting wire 7, and facilitate operation by medical personnel.

[0046] As shown in Figure 9, in addition, the recovery device is installed at the proximal end of the handle 101, which is convenient for medical staff to hold and operate it. Moreover, the recovery device can be used to control the connecting line 7 individually and in sequence, so that the connecting line 7 tightens the heart valve prosthesis and further enables the heart valve prosthesis to be re-accommodated into the delivery device 10; in addition, the release process of the heart valve prosthesis can also be controlled to improve the accuracy of the heart valve prosthesis implantation; in addition, after the heart valve prosthesis is released, it can be recovered through the connecting line 7.

[0047] As shown in Figures 1, 3 and 8, the recovery device includes a recovery body 1 and a rod body 3 assembled in the recovery body 1. A first single swivel 2 is provided on the rod body 3. The first single swivel 2 can rotate relative to the rod body 3 so that the connecting line 7 is wrapped around the first single swivel 2, thereby completing the purpose of recovering the connecting line 7. The recovery body 1 is provided with a receiving groove 127. The rod body 3 passes through the receiving groove 127, and the first single swivel 2 is located in the receiving groove 127. The rod body 3 can move relative to the recovery body 1 along the axial direction of the rod body 3 to achieve locking or unlocking between the rod body 3 and the recovery body 1, and at the same time drive the first single swivel 2 to move synchronously. This requires that there is movable space on both sides of the first single swivel 2. The recovery device also includes a stop structure provided on the recovery body 1. The stop structure can prevent the connecting line 7 from falling off the first single swivel 2, so that the first single swivel 2 can smoothly recover the connecting line 7, thereby improving the recovery success rate of the connecting line 7 and further improving the convenience of operation for medical staff.

[0048] Optionally, the first single rotating body 2 can rotate relative to the rod body 3 to recover the connecting line 7 connected thereto. Of course, the rod body 3 can also rotate relative to the recovery body 1 to drive the first single rotating body 2 to rotate, thereby realizing the recovery and release of the connecting line 7.

[0049] Optionally, when the rod body 3 is perpendicular to the axis of the recycling body 1 in the horizontal direction, the recycling body 1 and the handle 101 are coaxially arranged, and the rod body 3 needs to move along the axis direction perpendicular to the recycling body 1 to achieve locking or unlocking between the rod body 3 and the recycling body 1.

[0050] As shown in Figures 3, 4, 6 and 8, as an embodiment, the stop structure includes a stop member 13 and a groove 128 provided on the recovery body 1, the groove 128 is connected to the accommodating groove 127, the stop member 13 is embedded in the groove 128 and partially protrudes toward the accommodating groove 127, so that the stop member 13 can contact the first single swivel 2, improve the tightness between the stop member 13 and the first single swivel 2, reduce the gap between the first single swivel 2 and the recovery body 1, thereby effectively reducing the risk of the connecting line 7 falling off from the first single swivel 2.

[0051] Optionally, the stopper 13 may be fixedly connected to the groove 128 by gluing. Of course, it may also be fixed by interference fit, that is, the stopper 13 is embedded in the groove 128 .

[0052] As shown in Figures 3, 6 and 7, as an embodiment, the first single rotating body 2 includes a first winding portion 222 for winding the connecting wire 7, and the stopper 13 is arranged in contact with the first winding portion 222. When the connecting wire 7 is wound on the first winding portion 222, the first winding portion 222 abuts against the stopper 13, thereby increasing the friction between the first winding portion 222 and the stopper 13, thereby reducing the risk of the connecting wire 7 falling off the first winding portion 222.

[0053] As an embodiment, the stopper 13 is a foam part or a silicone part. Since the foam part or the silicone part is flexible, the use of a flexible part can make the stopper 13 fit more closely with the first winding part 222, thereby reducing the risk of the connecting wire 7 falling off from the first winding part 222.

[0054] As shown in Figures 1 and 8, as an embodiment, the recovery device includes a flange 31 located at one end of the rod body 3, the flange 31 is fixedly connected to the rod body 3, the recovery body 1 includes a cover body 12 and a recovery handle 11 that can be detachably connected to the cover body 12, a receiving groove 127 is provided in the cover body 12, and a groove 128 is provided on the cover body 12, which can become a first sub-groove, and the groove 128 is connected to the receiving groove 127. A first connecting hole 123 is provided on the side of the cover body 12 facing the flange 31, and the rod body 3 can pass through the first connecting hole 123 and can rotate relative to the cover body 12, and the diameter of the flange 31 is larger than the diameter of the first connecting hole 123, thereby preventing the rod body 3 from falling off from the position of the first connecting hole 123.

[0055] Optionally, the flange 31 and the rod body 3 may be integrally formed or threadedly connected.

[0056] As shown in Figures 2 to 4, optionally, a plurality of movable openings 122 are provided on the cover body 12, and the accommodating groove 127 is connected to the movable opening 122. The number of movable openings 122 corresponds to the number of single rotating bodies. The first operating part 224, the second operating part and the third operating part are all partially protruded from the movable opening 122, which is convenient for medical staff to drive the operating parts separately, and the other part of each operating part is located in the accommodating groove 127.

[0057] As shown in Figure 6, optionally, the recovery body 1 also includes a recovery handle 11, and the recovery handle 11 is provided with a threading channel 111 for guiding the connecting wire 7. A threading hole 121 is also provided on the distal side of the cover body 12. The threading holes 121 are set in three numbers, and the three threading holes 121 are all connected to the accommodating groove 127. Each connecting wire 7 passes through the threading channel 111 and passes through the corresponding threading hole 121, and is connected to the corresponding fixing parts 221 on the three winding parts in the accommodating groove 127.

[0058] As shown in Figure 1, as an embodiment, a telescopic member 5 is further provided between the flange 31 and the cover body 12. The two ends of the telescopic member 5 are respectively in contact with the flange 31 and the cover body 12, and the telescopic member 5 is in a pre-tightened state, so that when the recovery device is no longer in use, the elastic force generated by the telescopic member 5 causes the locking gear to always engage with the locking tooth groove 126, limiting the rotation of the rod body 3 relative to the cover body 12, thereby reducing the possibility of medical staff misoperating and releasing the heart valve prosthesis prematurely.

[0059] Optionally, after the medical staff finishes using it, the telescopic member 5 will return to its original state through its own elastic force, that is, it limits the rotation of the rod body 3 relative to the cover body 12, and also reduces the problem of misoperation.

[0060] Alternatively, the telescopic member 5 may be a spring. When the rod 3 rotates relative to the cover 12, the rod 3 synchronously drives the first single rotator 2, the second single rotator, and the third single rotator to reel in or unreel. The medical staff then directly pushes the flange 31 toward the rotating cap 6, providing a thrust greater than the elastic force of the telescopic member 5. At the same time, the locking gear separates from the locking tooth groove 126. At this time, the rotating cap 6 drives the rod 3 to rotate, thereby achieving the operation of reeling in or unreeling. Since the rod 3 needs to rotate or remain stationary relative to the recovery body 1 during operation, during the process of the locking gear engaging or disengaging from the locking tooth groove 126, the rod 3 moves relative to the recovery body 1 and the first single rotator 2 moves synchronously. During this process, the connecting line 7 may fall off the first winding portion 222 and fall into the gap between the first winding portion 222 and the recovery handle 11, resulting in the connecting line 7 being unable to be recovered. By providing a stop structure, the connecting line 7 is stopped to prevent the connecting line 7 from falling off.

[0061] Of course, in some cases, the rotating cap 6 can be directly pulled out from the convex cylinder 125 to separate the locking gear from the locking tooth groove 126, and the rod body 3 can be driven to rotate by the rotating cap 6 to realize the operation of winding or releasing the line.

[0062] As shown in Figures 3, 4 and 6, as an embodiment, the recycling body 1 includes a support member 8. When the cover body 12 is connected to the recycling body 1, the support member 8 is located in the accommodating groove 127 and is fixedly connected to the cover body 12 by bolts. The support member 8 is provided with another part of the groove 128, which cooperates with the groove 128 on the cover body 12 to fix the stop member 13. The groove 128 on the support member 8 can be called a second sub-groove.

[0063] As shown in Figures 6 and 8, optionally, the groove 128 is a circular groove consisting of two parts, one part of which is arranged on the cover body 12 and the other part is arranged on the support member 8. The two parts of the groove 128 correspond to each other, and the corresponding parts of the stop member 13 are clamped respectively to improve the stability of the stop member 13 in the groove 128.

[0064] In addition, the cover body 12 and the support member 8 are detachably connected, which also facilitates the installation of the first operating member 22, the second operating member 14 and the third operating member 15 in the accommodating groove 127 in the cover body 12. If the cover body 12 and the support member 8 are formed as one piece, it is inconvenient to install the first operating member 22, the second operating member 14 and the third operating member 15 in the accommodating groove 127.

[0065] As shown in Figures 6 and 7, as an embodiment, a notch 81 is provided on the support member 8, and the groove 128 is recessed at the position of the notch 81, that is, the second sub-groove is recessed from the notch 81 toward the recovery handle 11, and the first single swivel 2 is embedded in the notch 81. Specifically: the notch 81 is adapted to the first winding portion 222, so that the first winding portion 222 can be embedded in the notch 81, and the support member 8 plays a supporting role for the first operating member 22. In addition, a groove 128 is provided on the support member 8, so that the stop member 13 can be embedded in the groove 128, so as to prevent the connecting line 7 connected to the first operating member 22 from falling off during the winding or releasing process, resulting in failure of the winding or releasing function.

[0066] Optionally, the process of winding or releasing the line also includes a process of engaging or disengaging the locking gear with the locking tooth groove 126. During the engagement and disengagement process, the rod body 3 will also move along its axial direction. During the movement, the connecting line 7 on the first winding part 222 may fall off the first winding part 222, resulting in a "jumping line" situation. By embedding the stop member 13 into the groove 128 of the support member 8 and the cover body 12 respectively, the risk of the connecting line 7 falling off the first winding part 222 can be reduced.

[0067] As shown in Figure 6, as an embodiment, the first single-direction rotating body 2 can be rotated unidirectionally relative to the rod body 3 for winding. The first single-direction rotating body 2 includes a one-way rotating member 21 and a first operating member 22 connected to the one-way rotating member 21. The one-way rotating member 21 is installed on the outer surface of the rod body 3 and can be rotated unidirectionally relative to the rod body 3, that is, it can only rotate in a certain direction relative to the rod body 3. If it rotates in the opposite direction, it is in a locked state and cannot rotate; at the same time, the first operating member 22 is connected to the one-way rotating member 21 and is assembled on the rod body 3 through the one-way rotating member 21, so that medical staff can drive the first operating member 22 so that the first operating member 22 and the one-way rotating member 21 can rotate synchronously in one direction relative to the rod body 3, thereby improving the convenience of operation for medical staff.

[0068] Optionally, the one-way winding rotation means that the first single rotating body 2 can only rotate in a certain direction relative to the rod body 3, and cannot rotate in the opposite direction. For example, the first single rotating body 2 can be set to rotate in a clockwise direction relative to the rod body 3, and cannot rotate in a counterclockwise direction; or, the first single rotating body 2 can be set to rotate in a counterclockwise direction relative to the rod body 3, and cannot rotate in a clockwise direction. The specific rotation direction of the first single rotating body 2 relative to the rod body 3 can be adjusted according to actual use, and the embodiments of the present application do not make specific limitations.

[0069] As shown in Figures 4 and 7, as an embodiment, the first operating member 22 includes a first operating portion 224 protruding from the recovery body 1, and the first operating portion 224 is disc-shaped. At the same time, the first operating portion 224 also protrudes from the recovery body 1, so as to facilitate medical staff to operate it. The first operating member 22 also includes a first winding portion 222 connected to the first operating portion 224, and the fixing portion 221 is located on the first winding portion 222, so that the connecting line 7 is connected to the first operating member 22 through the fixing portion 221, and at the same time, it can also be wound around the first winding portion 222.

[0070] Optionally, the first winding portion 222 is a cylindrical structure, and its first operating portion 224 is coaxially arranged. One end of the first winding portion 222 is fixedly connected to the first operating portion 224, and the other end is protruded along the axial direction of the first operating portion 224, thereby providing a winding space for the connecting wire 7 to be wound around the outer surface of the first winding portion 222.

[0071] Optionally, the first winding portion 222 and the first operating portion 224 are integrally formed.

[0072] Optionally, the first operating portion 224 is a disc-shaped structure, which further facilitates medical staff to operate it with their fingers and improves operational convenience.

[0073] As a possible implementation, the first operating portion 224 may also be a polygonal structure, such as a pentagon or a hexagon.

[0074] As shown in Figure 6, optionally, the fixing portion 221 can be a protrusion provided on the outer surface of the first winding portion 222, and one end of the connecting wire 7 is wound around the protrusion, thereby realizing the connection between the connecting wire 7 and the fixing portion 221. Of course, the fixing portion 221 can also be at least two first through holes provided on the outer surface of the first winding portion 222, that is, one end of the connecting wire 7 passes through the two first through holes in sequence and is tied after passing through the last first through hole, thereby also realizing the connection between the connecting wire 7 and the fixing portion 221.

[0075] Of course, the fixing portion 221 may also be other structures that can be fixed to the connecting wire 7, for example, the connecting wire 7 is first wound around the first winding portion 222, and then the connecting wire 7 and the first winding portion 222 are glued together.

[0076] As shown in Figure 6, as an embodiment, the first operating member 22 is provided with a mounting groove 225 that passes through the first operating portion 224 and the first winding portion 222. The mounting groove 225 is used to install the one-way rotating member 21, so that medical staff can directly drive the first operating member 22, and drive the first operating member 22 to rotate relative to the rod body 3 in a direction that the one-way rotating member 21 can rotate unidirectionally relative to the rod body 3, thereby realizing that the one-way rotating member 21 and the first operating member 22 are synchronously rotated relative to the rod body 3 in a certain direction, which is the direction in which the one-way rotating member 21 can rotate unidirectionally relative to the rod body 3.

[0077] Optionally, since the installation slot 225 passes through the first operating portion 224 and the first winding portion 222 , the position of the one-way rotating member 21 in the installation slot 225 is not fixed, and may be located in the first winding portion 222 or in the first operating portion 224 .

[0078] As shown in FIG. 7 , optionally, a second through hole 226 is formed on the bottom wall of the installation slot 225 . The second through hole 226 is used for the rod body 3 to pass through, and also forms the installation slot 225 passing through the first operating portion 224 and the first winding portion 222 .

[0079] As an embodiment, the one-way rotating member 21 is a one-way bearing. The one-way rotating member 21 is set as a one-way bearing, so that the one-way bearing is installed on the rod body 3 and can rotate unidirectionally relative to the rod body 3. The one-way bearing can rotate in a clockwise direction relative to the rod body 3. If it rotates in a counterclockwise direction, the one-way bearing will lock the rod body 3 and it cannot rotate; or the one-way bearing can also rotate in a counterclockwise direction relative to the rod body 3. If it rotates in a clockwise direction, the rod body 3 will be locked and it cannot rotate.

[0080] Optionally, the outer ring of the one-way bearing is fitted with the peripheral wall of the mounting groove 225 , so that the one-way bearing and the first operating member 22 can rotate synchronously relative to the rod body 3 .

[0081] As shown in FIG. 3 and FIG. 6 , as an embodiment, the recovery device includes a stop block 9 , which is disposed at the opening of the mounting groove 225 to prevent the one-way rotating member 21 from falling out of the mounting groove 225 .

[0082] As an embodiment, the recovery device also includes a second single rotor and a third single rotor, which are both arranged on the rod body 3 and can be rotated in one direction relative to the rod body 3 to reel in the wires, so that the first single rotor 2, the second single rotor and the third single rotor respectively independently control the connecting wires 7 connected to them, that is, there are three connecting wires 7, each connecting wire 7 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 first single rotor 2, the second single rotor or the third single rotor can be controlled individually, and a connecting wire 7 connected to it can be wound around the outer surface of the corresponding winding part through any single rotor, and the heart valve prosthesis is pulled to achieve fine-tuning of the position of the heart valve prosthesis and adjust the position or state of the heart valve prosthesis to improve the accuracy of implantation.

[0083] In some cases, at least two single rotators can also be controlled to rotate relative to the rod body 3 at the same time, that is, the first single rotator 2 and the second single rotator, or the first single rotator 2 and the third single rotator, or the second single rotator and the third single rotator can be controlled to reel in the line at the same time.

[0084] Optionally, the second single rotator and the third single rotator are both provided with a fixing portion 221 for connecting to the connecting wire 7 to prevent the connecting wire 7 from falling off the second single rotator and the third single rotator. At the same time, a second winding portion 141 and a third winding portion 151 are also provided for winding the connecting wire 7.

[0085] Optionally, the first single rotator 2 , the second single rotator and the third single rotator are respectively connected to a corresponding connecting line 7 .

[0086] As shown in Figures 6 and 7, one end of the multiple connecting wires 7 is connected to the corresponding single rotator through the fixing part 221 on each single rotator, and the other end passes through the connecting ring on the heart valve prosthesis and goes back to the delivery device 10 to be connected to other components on the delivery device 10. 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 multiple single rotators can be controlled to rotate unidirectionally relative to the rod body 3 respectively, which is equivalent to controlling the multiple connecting wires 7 to tighten the heart valve prosthesis respectively. During the tightening process, the connecting wires 7 are wound around the winding part of the corresponding single rotator, so that the connecting rings on the heart valve prosthesis can be pulled back in turn to the position abutting against the fixed head on the delivery device 10, completing the recovery of the heart valve prosthesis and reducing the situation where the connecting rings of the heart valve prosthesis are tightened at the same time, resulting in the inability to recover the heart valve prosthesis.

[0087] In addition, when the heart valve prosthesis needs to be re-housed in the accommodating space in the inner tube assembly, the recovery device of the embodiment of the present application can control the first single rotor 2, the second single rotor and the third single rotor to rotate relative to the rod body 3, so that the multiple connecting wires 7 tighten the heart valve prosthesis, and further enable the connecting rings of the heart valve prosthesis to return one by one to the abutment position of the fixed head in the delivery device 10, thereby completing the re-housing of the heart valve prosthesis; of course, it can also further improve the accuracy of the implantation of the heart valve prosthesis. For example, when the implantation position of the heart valve prosthesis is incorrect, since the proximal end of the heart valve prosthesis is restricted by the multiple connecting wires 7, by rotating one or more single rotors, the corresponding connecting wire 7 is wound around the winding part of the corresponding single rotor, and the corresponding connecting ring of the heart valve prosthesis is pulled by one or more connecting wires 7 to fine-tune the local position of the heart valve prosthesis, thereby improving the accuracy of the implantation of the heart valve prosthesis.

[0088] As shown in Figures 4 and 6, at the same time, the rod body 3 of the embodiment of the present application can rotate relative to the recovery body 1, and the first single rotor 2, the second single rotor and the third single rotor are provided on the rod body 3. When the heart valve prosthesis needs to be released, the rod body 3 is driven to rotate relative to the recovery body 1, and the first single rotor 2, the second single rotor and the third single rotor are synchronously driven to rotate relative to the recovery body 1, so that the multiple connecting wires 7 wound on the winding parts of the corresponding single rotors are in a relaxed and unwinding state, and the heart valve prosthesis is released; after the release of the heart valve prosthesis is completed, each connecting wire 7 corresponding to the first single rotor 2, the second single rotor and the third single rotor is separated from the heart valve prosthesis respectively, and the rod body 3 is driven to rotate relative to the recovery body 1, and the multiple single rotors are synchronously driven to rotate relative to the recovery body 1, so that the multiple connecting wires 7 are wound on the winding parts of the corresponding single rotors, completing the winding operation. This reduces the operation time of the recovery device for winding and releasing the connecting wire 7, improves the operating efficiency, and also facilitates the operation of medical staff. That is, it is only necessary to drive the rod body 3 to rotate relative to the recovery body 1 to achieve the operation of releasing or rewinding multiple connecting wires 7 at the same time.

[0089] Optionally, the rod body 3 can be rotated clockwise relative to the recovery body 1 for the line-reeling operation, and rotated counterclockwise relative to the recovery body 1 for the line-releasing operation; or, the rod body 3 can be rotated counterclockwise relative to the recovery body 1 for the line-reeling operation, and rotated clockwise relative to the recovery body 1 for the line-releasing operation.

[0090] Optionally, the winding operation completed by the first single rotating body 2, the second single rotating body and the third single rotating body relative to the rod body 3 should be consistent with the winding operation completed by the rotation direction of the rod body 3 relative to the recovery body 1. For example, if the first single rotating body 2, the second single rotating body and the third single rotating body rotate clockwise relative to the rod body 3 to separately recover the corresponding connecting line 7, then the rotation of the rod body 3 in the clockwise direction relative to the recovery body 1 so that the multiple single rotating bodies on the rod body 3 rotate synchronously should also be a winding operation, and the rotation of the rod body 3 in the counterclockwise direction relative to the recovery body 1 so that the multiple single rotating bodies on the rod body 3 rotate synchronously is a releasing operation.

[0091] As shown in Figures 6 and 7, as an embodiment, two clamping grooves 32 are provided at intervals on the outer surface of the rod body 3, and the recovery device also includes two clamping parts 4, which are sheet-like structures. The two clamping parts 4 are respectively clamped on the clamping grooves 32, and the first single rotator 2, the second single rotator and the third single rotator are located between the two clamping parts 4. The clamping parts 4 limit the three single rotators to prevent the single rotators from moving along the axial direction of the rod body 3, further affecting the winding or releasing operation of the winding and releasing assembly.

[0092] Optionally, one of the clamping members 4 fits with the stop block 9 installed on the first operating member 22 to improve the stopping effect of the clamping member 4 , and the other clamping member 4 fits with the third operating member 15 .

[0093] As shown in Figures 5 to 7, as an embodiment, the first single rotator 2, the second single rotator and the third single rotator are arranged in sequence along the axial direction of the rod body 3, the second single rotator includes a second operating member 14, the third single rotator includes a third operating member 15, and the first operating member 22 is provided with a plug-in groove 223 for plugging with the second operating member 14 on the side away from the stop structure; the second operating member 14 is provided with a plug-in groove 223 for plugging with the third operating member 15 on the side away from the stop structure. The plug-in grooves 223 on the first operating member 22 and the second operating member 14 have the same structure. The plug-in grooves 223 are provided on the first operating member 22 and the second operating member 14, so that the second winding portion 141 of the second operating member 14 can be inserted into the plug-in groove 223 of the first operating member 22 The third winding portion 151 of the third operating member 15 can be inserted into the insertion groove 223 of the second operating member 14, thereby shortening the axial distance occupied by the three operating members on the rod body 3 and improving space utilization; in addition, it can also prevent the connecting line 7 connected to the second operating member 14 and the third operating member 15 from falling off from the second operating member 14 and the third operating member 15, resulting in the inability to reel in or release the line normally.

[0094] Optionally, the third operating portion of the third operating member 15 facing the flange 31 is a planar structure without the insertion groove 223 , thereby increasing the contact area with the clamping member 4 .

[0095] As shown in Figures 6 and 7, optionally, the second single-rotating body includes a second operating member 14 and a one-way rotating member 21, and the one-way rotating member 21 is a one-way bearing. The structure of the second operating member 14 is the same as that of the first operating member 22, including a second operating part and a second winding part 141, wherein a fixing part 221 is provided on the second winding part 141, and a penetrating installation groove 225 is also provided on the second operating member 14; the third single-rotating body includes a third operating member 15 and a one-way rotating member 21, and the one-way rotating member 21 is a one-way bearing. The difference between the third operating member 15 and the second operating member 14 is that: the third operating part of the third operating member 15 does not have a plug-in slot 223, and the third operating member 15 includes a third operating part and a third winding part 151, wherein a fixing part 221 is provided on the third winding part 151, and a penetrating installation groove 225 is also provided on the third operating member 15. The second winding portion 141 and the second operating portion are integrally formed, and the third winding portion 151 and the third operating portion are integrally formed. The second operating portion and the third operating portion are disc-shaped structures, which further facilitates medical staff to operate them with their fingers and improves operational convenience. The second operating portion and the third operating portion can also be polygonal structures, such as a pentagon or a hexagon.

[0096] As shown in Figures 1, 3 and 8, as an embodiment, the recovery body 1 includes a recovery handle 11, which is detachably connected to the cover body 12, thereby facilitating the assembly of other parts in the cover body 12; a receiving groove 127 is provided in the cover body 12, and the rod body 3 passes through the cover body 12 perpendicular to the axial direction of the recovery handle 11, thereby facilitating medical staff to operate it, that is, one hand holds the recovery handle 11, and the other hand is used to drive the rod body 3 to rotate, which is ergonomic.

[0097] Optionally, the rod body 3 is arranged to pass through the cover body 12 in a horizontal direction perpendicular to the axial direction of the recovery handle 11, and the axial direction of the recovery handle 11 is from the proximal end to the distal end.

[0098] As shown in Figures 2 and 3, the recovery device also includes a rotating cap 6 that can drive the rod body 3 to rotate. The rotating cap 6 is located at the end opposite to the flange 31 and cooperates with the flange 31 to prevent the rod body 3 from falling off the cover body 12. In addition, it is convenient for medical staff to drive the rod body 3 to rotate through the rotating cap 6, thereby improving operational convenience.

[0099] Optionally, in order to further increase the friction between the rotating cap 6 and the medical staff, a plurality of recessed areas or lines are provided on the circumference of the rotating cap 6 .

[0100] Optionally, the rotating cap 6 can move along an axial direction perpendicular to the recycling body 1, and at the same time drive the rod body 3 to move along an axial direction perpendicular to the recycling body 1, thereby achieving relative locking or unlocking between the rod body 3 and the recycling body 1.

[0101] As shown in Figure 5, as an embodiment, the recovery device also includes a positioning portion 61 provided on the rotating cap 6 for cooperating with the cover body 12 to prevent the rod body 3 from accidentally rotating. By providing the positioning portion 61, and the positioning portion 61 is provided toward one side of the cover body 12, the positioning portion 61 cooperates with the cover body 12 to achieve relative stillness of the rod body 3 and the cover body 12, thereby avoiding misoperation by medical staff, which causes the rod body 3 to rotate relative to the cover body 12 and releases the heart valve prosthesis prematurely.

[0102] Optionally, the positioning portion 61 and the rotating cap 6 may be integrally formed, or may be connected in a detachable manner, such as by threading or snapping.

[0103] The positioning portion 61 includes a locking gear, and the cover body 12 is provided with a locking tooth groove 126 that cooperates with the locking gear, that is, the cover body 12 includes the locking tooth groove 126, and the locking gear is engaged with the locking tooth groove 126 to prevent the rod body 3 from rotating accidentally relative to the cover body 12.

[0104] As shown in Figures 4 and 5, optionally, the positioning portion 61 moves toward the locking tooth groove 126 to achieve engagement between the locking gear and the locking tooth groove 126, and the positioning portion 61 moves away from the locking tooth groove 126, and the locking gear is separated from the locking tooth groove 126. In addition, when the positioning portion 61 moves, the rod body 3 also moves synchronously.

[0105] As shown in Figure 4, as an embodiment, the cover body 12 includes a convex cylinder 125 extending along the extension direction of the rod body 3 and protruding toward the side of the rotating cap 6. The inner wall of the convex cylinder 125 is provided with a locking tooth groove 126. By providing the convex cylinder 125, the locking gear on the rotating cap 6 can be easily engaged with the locking tooth groove 126 on the inner wall of the convex cylinder 125, which can further prevent the rod body 3 from rotating accidentally.

[0106] As shown in Figure 4, as an embodiment, the protrusion 125 is provided with a second connecting hole 124, which is located on the side opposite to the first connecting hole 123 and is coaxially arranged with the first connecting hole 123, so as to facilitate the rod body 3 to pass through the first connecting hole 123 and the second connecting hole 124, and be threadedly connected with the rotating cap 6, so that the rotating cap 6 can drive the rod body 3 to rotate relative to the cover body 12.

[0107] As shown in FIG9 , an embodiment of the present application further provides a heart valve prosthesis delivery device, comprising a handle 101 and the aforementioned recovery device for recovering the connecting line. The recovery body 1 is arranged at the proximal end of the handle 101 to facilitate operation by medical staff.

[0108] As shown in Figure 9, the delivery device 10 includes a handle 101, an outer tube 102 and an inner tube. The outer tube 102 and the inner tube constitute an inner tube assembly. The outer tube 102 and the inner tube are both connected to the handle 101. The outer tube 102 is sleeved on the outer circumference of the inner tube, and the inner tube extends inside the outer tube 102. A accommodating space for accommodating a heart valve prosthesis is provided between the outer tube 102 and the inner tube. When the heart valve prosthesis is not implanted, the heart valve prosthesis is located in the accommodating space.

[0109] As an embodiment, the recovery body 1 and the handle 101 are detachably connected, thereby facilitating the assembly between the conveying device 10 and the handle 101 .

[0110] Optionally, a protrusion is provided at the distal end of the recovery body 1, and a slot is provided at the proximal end of the handle 101, and the protrusion is inserted into the slot accordingly, thereby realizing the detachable connection between the recovery body 1 and the handle 101. Of course, the recovery handle 11 can also be connected to the handle 101 by bolts, that is, the handle 101 and the recovery handle 11 are fixed by bolts along the axial direction of the recovery handle 11 and the handle 101.

[0111] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0112] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0113] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element. Industrial Applicability

[0114] The present application provides a recovery device for recovering a connecting wire and a heart valve prosthesis delivery device. During the process of recovering the connecting wire, the risk of the connecting wire falling off the first single rotating body can be reduced, thereby improving the convenience of operation for medical staff.

[0115] Furthermore, it is understood that the retrieval device for retrieving the connecting wire and the heart valve prosthesis delivery device of the present application are reproducible and can be widely used in the field of medical devices.

Claims

1. A recycling device for recycling connecting wires, characterized in that, Including: A recycling body, a rod assembled on the recycling body, and a first single-rotating body for winding a connecting wire; the first single-rotating body is rotatably arranged on the rod and can axially move along with the rod; the recycling body is provided with a receiving groove, the rod penetrates through the receiving groove, and the first single-rotating body can move in the receiving groove along with the rod; A stop structure for preventing the connecting wire from slipping off the first single-rotating body is provided on the recycling body.

2. The recycling device for recycling connecting wires according to claim 1, characterized in that, The stop structure includes a stop member and a groove provided on the recycling body, the groove is communicated with the receiving groove, and the stop member is embedded in the groove and partially protrudes into the receiving groove.

3. The recycling device for recycling connecting wires according to claim 2, characterized in that, The first single-rotating body includes a first wire-winding portion for winding the connecting wire, and the stop member is arranged in abutment with the first wire-winding portion.

4. The recycling device for recycling connection lines according to claim 3, wherein, The stop member is a foam member or a silicone member.

5. The recycling device for recycling connecting wires according to any one of claims 2 to 4, characterized in that, The recycling device includes a flange at one end of the rod, the flange is fixedly connected to the rod, the recycling body includes a cover body and a recycling handle detachably connected to the cover body, the cover body is provided with the receiving groove and the groove, a first connection hole for the rod to penetrate is provided on one side of the cover body facing the flange, and the diameter of the flange is larger than the diameter of the first connection hole.

6. The recycling device for recycling connecting wires according to claim 5, characterized in that, A telescopic member is further provided between the flange and the cover body, and two ends of the telescopic member are respectively in abutment with the flange and the cover body and the telescopic member is in a pre-compressed state.

7. The recycling device for recycling connection lines according to claim 5, characterized in that, The recycling body further includes a support member, the support member is located in the receiving groove and is connected to the cover body, and the support member is provided with the groove for receiving the stop member.

8. The recycling device for recycling connecting wires according to claim 7, characterized in that, A notch is provided on the support member, the groove is recessed from the position of the notch, and the first single-rotating body is embedded into the notch.

9. The recycling device for recycling connecting wires according to claim 3 or 4, characterized in that, The first single-rotating body can rotate in a single direction for taking up the wire relative to the rod, the first single-rotating body includes a one-way rotating member and a first operating member cooperatively connected with the one-way rotating member, the one-way rotating member is installed on the rod, and the first operating member is assembled on the rod through the one-way rotating member.

10. The recycling device for recycling connection lines according to claim 9, characterized in that, The first operating member includes a first operating portion protruding out of the recycling body and the first wire-winding portion connected to the first operating portion, and a fixing portion for connecting the connecting wire is provided on the first wire-winding portion.

11. The recycling device for recycling connection lines according to claim 10, characterized in that, The first operating member is provided with an installation groove penetrating through the first operating portion and the first wire-winding portion, and the one-way rotating member is located in the installation groove.

12. The recycling device for recycling connection lines according to claim 9, characterized in that, The one-way rotating member is a one-way bearing.

13. The recycling device for recycling connection lines according to claim 11, wherein, The recycling device includes a stop block for preventing the one-way rotating member from slipping off, and the stop block is arranged at the opening position of the installation groove.

14. The recycling device for recycling connecting wires according to claim 13, characterized in that, The recycling device further includes a second single-rotating body and a third single-rotating body, the second single-rotating body and the third single-rotating body are both located on the rod and can rotate in a single direction for taking up the wire relative to the rod respectively.

15. The recycling device for recycling connecting wires according to claim 14, characterized in that, Two clamping grooves are spaced on the outer surface of the rod, the recycling device further includes two clamping members, the clamping members are correspondingly matched with the clamping grooves, one of the clamping members is in fit with the third single-rotating body, and the other clamping member is in fit with the stop block.

16. The recycling device for recycling connection lines according to claim 14, characterized in that, The first single rotating body, the second single rotating body and the third single rotating body are arranged in sequence along the axial direction of the rod body, the second single rotating body includes a second operating member, the third single rotating body includes a third operating member, and the first operating member is provided with a plug-in groove for plugging with the second operating member on the side away from the stop structure; the second operating member is provided with a plug-in groove for plugging with the third operating member on the side away from the stop structure.

17. The recycling device for recycling connection lines according to claim 5, characterized in that, The recovery device comprises a rotating cap which can drive the rod body to rotate and move along an axial direction perpendicular to the recovery handle, and the rotating cap is located at an opposite end of the flange.

18. The recycling device for recycling connection lines according to claim 17, wherein, The recovery device further comprises a positioning portion disposed on the rotating cap and used to cooperate with the cover body to prevent the rod body from accidentally rotating; The positioning portion comprises a locking gear, and the cover body is provided with a locking tooth groove matched with the locking gear.

19. The recycling device for recycling connection lines according to claim 18, characterized in that, The cover body comprises a convex cylinder extending along the extension direction of the rod body and protruding toward one side of the rotating cap, and the locking tooth groove is arranged on the inner wall of the convex cylinder.

20. The recycling device for recycling connecting wires according to claim 19, 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 rod body passes through the first connecting hole and the second connecting hole and is threadedly connected to the rotating cap.

21. A heart valve prosthesis delivery device, characterized in that, It comprises a handle; and a recovery device for recovering a connecting line as claimed in any one of claims 1 to 20, wherein the recovery body is arranged at the proximal end of the handle.

22. The conveying device according to claim 21, wherein, The recycling body is detachably connected to the handle.

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