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

Abstract

The present application relates to the technical field of medical devices, and provides a recovery device for recovering connecting wires and a heart valve prosthesis delivery device, wherein the recovery device for recovering connecting wires comprises: a recovery body connected to a handle and a retractable wire assembly assembled on the recovery body; the retractable wire assembly comprises a rod body that can rotate relative to the recovery body, and several single rotators that are arranged on the rod body and can rotate relative to the rod body for unidirectional wire retraction, and each single rotator is provided with a fixing portion for connecting the connecting wire and a winding portion for winding the connecting wire. The technical solution of the present application can solve the technical problem that during the recovery process of the heart valve prosthesis, multiple connecting rings on the heart valve prosthesis cannot return to the position of abutting against the fixing head at the same time, resulting in failure of recovery 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 device for recovering a connecting line and a heart valve prosthesis delivery device. Background Art

[0002] 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.

[0003] During valve treatment, a conveyor is needed to transport the heart valve prosthesis, control its shape and release it. When the implantation position of the heart valve prosthesis is inaccurate, it is sometimes necessary to tighten the multiple connecting rings at the proximal end of the heart valve prosthesis, re-house them in the tubing assembly and re-release them. However, during the recovery process, only multiple connecting rings can be tightened at the same time, and there is a risk that the multiple connecting rings will not return to the card slots of the fixed head on the conveyor at the same time, resulting in the inability to recover the heart valve prosthesis. Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide a recovery device and a heart valve prosthesis delivery device that can individually adjust the corresponding recovery connection line.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] In the first aspect, the present application provides a recovery device for recovering a connecting line, comprising: a recovery body for connecting to a handle and a line-reeling assembly assembled on the recovery body; the line-reeling assembly comprises a rod body rotatable relative to the recovery body, and several single rotating bodies arranged on the rod body and rotatable unidirectionally relative to the rod body for line reeling, each of the single rotating bodies being provided with a fixing portion for connecting the connecting line and a winding portion for winding the connecting line.

[0007] As an embodiment, the single rotating body includes a one-way rotating part and an operating part connected to the one-way rotating part, the one-way rotating part is installed on the rod body, and the operating part is assembled on the rod body through the one-way rotating part.

[0008] As an embodiment, the operating member includes an operating portion protruding from the recycling body and the winding portion connected to the operating portion, and the fixing portion is located on the winding portion.

[0009] As an embodiment, the fixing portion includes a protrusion or at least two first through holes for fixing to the connecting wire.

[0010] As an embodiment, the operating member is provided with a mounting groove penetrating the operating portion and the winding portion, and the one-way rotating member is located in the mounting groove.

[0011] As an embodiment, the one-way rotating member is a one-way bearing.

[0012] As an embodiment, the recovery body includes a recovery handle and a cover body detachably connected to the recovery handle, and the rod body passes through the cover body perpendicular to the axial direction of the recovery handle.

[0013] As an embodiment, the retractable wire assembly includes a flange located at one end of the rod body, the flange is fixedly connected to the rod body, and the cover body is provided with a first connecting hole on the side facing the flange, and the diameter of the flange is larger than the diameter of the first connecting hole.

[0014] As an embodiment, the retractable wire assembly includes a rotating cap that can drive the entire rod body to rotate, and the rotating cap is located at the other end opposite to the flange.

[0015] As an embodiment, the retractable wire assembly further includes a positioning portion provided on the rotating cap for cooperating with the cover body to prevent the rod body from accidentally rotating.

[0016] As an embodiment, the positioning portion includes a locking gear, and the cover body is provided with a locking tooth groove adapted to the locking gear.

[0017] 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.

[0018] 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.

[0019] As an embodiment, a telescopic member is further provided between the flange and the cover body, and two ends of the telescopic member are respectively in contact with the flange and the cover body for meshing the locking gear with the locking tooth groove.

[0020] As an embodiment, two clamping grooves are provided at intervals on the outer surface of the rod body; the recovery device includes a stop block, which is embedded in the winding part of the operating part close to the side of the rotating cap, and the recovery device also includes two clamping parts, which correspond to the clamping grooves, and multiple single rotating bodies are located between the two clamping parts, one of the clamping parts is in contact with the single rotating body away from the side of the rotating cap, and the other clamping part is in contact with the stop block, and the two clamping parts are used to limit and stop multiple single rotating bodies along the axial direction of the rod body.

[0021] As an embodiment, multiple single rotating bodies are arranged in sequence along the axial direction of the rod body, wherein the operating member close to the side of the rotating cap is the first operating member, and the second operating member is abutting against the first operating member, and the first operating member and the second operating member are both provided with a plug-in groove for adapting to the winding part on the side away from the rotating cap.

[0022] As an embodiment, the cover body is provided with a plurality of movable openings, the number of the movable openings corresponds to the number of the single rotating bodies, and the operating portion is partially protruded from the movable openings.

[0023] As an embodiment, a threading channel for guiding the connecting wire is provided in the recovery handle, an active chamber is provided in the cover body, the active chamber is connected to the active opening, and a threading hole is also provided on one side of the far end of the cover body for guiding the connecting wire into the active chamber.

[0024] As an embodiment, it further includes a support member, which is arranged in the movable chamber and fixedly connected to the cover body. The support member is provided with a notch, and the winding part on the operating member close to the side of the rotating cap is embedded in the notch.

[0025] In a second aspect, an embodiment of the present application introduces a heart valve prosthesis delivery device, comprising a handle; and a connecting wire recovery device for a heart valve prosthesis as described in the first aspect, wherein the recovery body is disposed at the proximal end of the handle.

[0026] As an embodiment, the recovery body is detachably connected to the handle.

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

[0028] 1. The retrieval device includes a retrieval body connected to a handle and a retractable wire assembly provided on the retrieval body, wherein the retractable wire assembly includes a rod body rotatable relative to the retrieval body and a plurality of single-rotating bodies provided on the rod body and unidirectionally rotatable relative to the rod body to achieve unidirectional retraction of the wire, wherein the single-rotating body controls a single connecting wire. At the same time, the single-rotating body is provided with a fixing portion fixedly connected to the connecting wire to prevent the connecting wire from falling off, and a winding portion for winding the connecting wire. When the heart valve prosthesis needs to be retrieved, the connecting wire can be wound around the winding portion by sequentially rotating the single-rotating bodies in one direction, thereby tightening the heart valve prosthesis, thereby completing the retrieval of the heart valve prosthesis, improving the success rate of heart valve prosthesis retrieval, and facilitating the operation of medical personnel.

[0029] In addition, when the position of the heart valve prosthesis is incorrectly implanted, the proximal end of the heart valve prosthesis is restricted by the connecting wire. Therefore, by rotating the single rotor, the connecting wire is wound around the winding portion, and the connecting wire pulls the heart valve prosthesis to fine-tune the local position of the heart valve prosthesis, thereby improving the accuracy of the heart valve prosthesis implantation.

[0030] 2. The retractable wire assembly includes a positioning portion that cooperates with the cover body to prevent the rod body from accidentally rotating. By providing the positioning portion, 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.

[0031] 3. Two clamping grooves are arranged at intervals on the outer surface of the rod body, and two clamping parts are respectively clamped on the clamping grooves to limit and stop multiple single swivels along the axial direction of the rod body to prevent the single swivels from moving along the axial direction of the rod body, thereby improving the stability of the recovery device and facilitating the operation of medical staff. 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] Figure 1 A schematic structural diagram of a recovery device for recovering connecting wires provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of a top view of a recovery device for recovering connecting wires provided in an embodiment of the present application;

[0035] Figure 3 for Figure 2 AA-axis cross-sectional structural diagram;

[0036] Figure 4 A schematic diagram of a partially exploded structure of a recovery device for recovering connecting wires provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of a partially exploded structure of a recovery device for recovering connecting wires provided in an embodiment of the present application from another perspective;

[0038] Figure 6 A schematic diagram of an exploded structure from one perspective of a recovery device for recovering connecting wires provided in an embodiment of the present application;

[0039] Figure 7 A schematic diagram of an exploded structure from another perspective of a recovery device for recovering connecting wires provided in an embodiment of the present application;

[0040] Figure 8 Schematic diagram of the partial explosion structure of the heart valve prosthesis delivery device provided in an embodiment of the present application.

[0041] Icons: 1-recovery body; 11-recovery handle; 111-threading channel; 12-cover body; 121-threading hole; 122-movable opening; 123-first connecting hole; 124-second connecting hole; 125-convex cylinder; 126-locking tooth groove; 2-single swivel; 21-one-way rotating part; 22-operating part; 221-fixing part; 222-winding part; 223-plug-in slot; 224-operating part; 225-installation slot; 226-second through hole; 3-rod body; 31-flange; 32-clamping slot; 4-clamping part; 5-telescopic part; 6-rotating cap; 61-positioning part; 7-connecting line; 8-support part; 81-notch; 9-stop block; 10-convex device; 101-handle; 102-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 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 of the heart valve prosthesis delivery handle that is closest to the heart tissue, and the term "proximal end" refers to the end of the heart valve prosthesis delivery handle that is closest to the operator. The terms "first" and "second" are used only to distinguish between the descriptions and should not be understood to indicate or imply relative importance.

[0044] On the one hand, the embodiment of the present application introduces a recovery device for recovering the connecting wire. The recovery device is installed at the proximal end of the handle 101, which is convenient for medical staff to operate it by hand. In addition, the recovery device can be used to control the connecting wire 7 individually and in sequence, so that the connecting wire 7 tightens the heart valve prosthesis to ensure that the heart valve prosthesis can be re-accommodated into the delivery device; on the other hand, it can also control the release process of the heart valve prosthesis to improve the accuracy of the heart valve prosthesis implantation; on the other hand, after the heart valve prosthesis is released, the connecting wire 7 can be recovered.

[0045] like Figure 1 and 2 As shown, the recovery device includes a recovery body 1 and a retractable wire assembly assembled on the recovery body 1. The recovery body 1 is connected to the handle 101. The retractable wire assembly is used to pay out or reel in the connecting wire 7. During the process of releasing the heart valve prosthesis, the connecting wire 7 needs to be paid out through the retractable wire 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 connecting wire 7 needs to be retracted through the retractable wire assembly.

[0046] Among them, such as Figure 1 、 3 As shown in Figure 6, the wire reeling and unreeling assembly includes a rod body 3 that can rotate relative to the recovery body 1, and a plurality of single rotating bodies 2 arranged on the rod body 3 that can rotate unidirectionally relative to the rod body 3 and complete the wire reeling operation of the connecting line 7 during the unidirectional rotation. Each single rotating body 2 is provided with a fixing portion 221 for connecting with the connecting line 7 to prevent the connecting line 7 from falling off the single rotating body 2, and is also provided with a winding portion 222 for winding the connecting line 7.

[0047] like Figure 8 As shown, the delivery device 10 includes a handle 101, an outer tube 102 and an inner tube. The outer tube and the inner tube constitute an inner tube assembly. Both the outer tube and the inner tube are connected to the handle 101. The outer tube 102 is sleeved on the outer circumference of the inner tube. The inner tube extends inside the outer tube. A receiving space for accommodating a heart valve prosthesis is provided between the outer tube and the inner tube. When the heart valve prosthesis is not implanted, the heart valve prosthesis is located in the receiving space.

[0048] Optionally, each single rotor 2 is connected to a corresponding connecting line 7 .

[0049] like Figure 6 and 7As shown, one end of the connecting wire 7 is connected to the single rotating body 2 through the fixing portion 221, and the other end passes through the connecting ring on the heart valve prosthesis and is 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-housed in the accommodating space formed by the inner tube assembly, the multiple single rotating bodies 2 can be controlled to rotate unidirectionally relative to the rod body 3, which is equivalent to controlling the multiple connecting wires 7 to tighten the heart valve prosthesis. During the tightening process, the connecting wire 7 is wound around the winding portion 222, so that the connecting ring on the heart valve prosthesis can be pulled back in turn to the position abutting against the fixed head on the delivery device, completing the recovery of the heart valve prosthesis and avoiding the situation where the connecting ring of the heart valve prosthesis is tightened at the same time, resulting in the inability to recover the heart valve prosthesis.

[0050] Optionally, one-way rotation means that the 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 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 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 single rotating body 2 relative to the rod body 3 can be adjusted according to actual use, and the embodiments of this application do not make specific limitations.

[0051] In addition, the recovery device of the embodiment of the present application can control the rotation of multiple single rotating bodies 2 relative to the rod body 3 when the heart valve prosthesis needs to be re-housed in the accommodation space of the inner tube assembly, so that the multiple connecting wires 7 can tighten the heart valve prosthesis, and further enable the connecting rings of the heart valve prosthesis to return to the abutment position of the fixed head one by one, 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 multiple connecting wires 7, the corresponding connecting wire 7 is wound around the winding part 222 by rotating one or more single rotating bodies 2, 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.

[0052] like Figure 4 and 6As shown, the rod body 3 of the embodiment of the present application can rotate relative to the recovery body 1, and multiple single-rotating bodies 2 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 multiple single-rotating bodies 2 are simultaneously driven to rotate relative to the recovery body 1, so that multiple connecting wires 7 wound on the corresponding winding parts 222 are in a wire-releasing state, and the heart valve prosthesis is released. After the heart valve prosthesis is released, each connecting wire 7 corresponding to the single-rotating body 2 is separated from the heart valve prosthesis. By driving the rod body 3 to rotate relative to the recovery body 1, the multiple single-rotating bodies 2 are simultaneously driven to rotate relative to the recovery body 1, so that the multiple connecting wires 7 are wound on the corresponding winding parts 222, completing the wire-reeling operation. This reduces the operation time of the recovery device for reeling in and out the connecting wires 7, improves the operation efficiency, and also facilitates the operation of medical personnel. That is, only by driving the rod body 3 to rotate relative to the recovery body 1, the operation of reeling in or out multiple connecting wires 7 can be achieved.

[0053] 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.

[0054] Optionally, the winding operation completed by the rotation direction of the single rotating body 2 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 single rotating body 2 rotates clockwise relative to the rod body 3 to recover the corresponding connecting line 7 separately, then the clockwise rotation of the rod body 3 relative to the recovery body 1 so that the multiple single rotating bodies 2 on the rod body 3 rotate synchronously is also a winding operation, and the counterclockwise rotation of the rod body 3 relative to the recovery body 1 so that the multiple single rotating bodies 2 on the rod body 3 rotate synchronously is a releasing operation.

[0055] Optionally, the number of single rotating bodies 2 is three, and each single rotating body 2 corresponds to an independently controlled connecting line 7 connected to it, that is, three connecting lines 7 are set, and each connecting line 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 single rotating body 2 can be controlled individually, and the corresponding connecting line 7 is wound around the outer surface of the winding part 222 through the single rotating body 2, and the heart valve prosthesis is pulled 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.

[0056] In some cases, the two single rotating bodies 2 can also be controlled to rotate relative to the rod body 3 at the same time to reel in the line at the same time.

[0057] like Figure 3 、 5As shown in Figure 7, as an embodiment, the single-rotating body 2 includes a one-way rotating member 21 and an operating member 22 that is 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 rotate unidirectionally relative to the rod body 3, that is, it can only be equivalent to the rod body 3 rotating in a certain direction. If it is rotated in the opposite direction, it is in a locked state and cannot rotate; at the same time, the 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 operating member 22, so that the operating member 22 and the one-way rotating member 21 can rotate unidirectionally relative to the rod body 3 synchronously, thereby improving the convenience of operation for medical staff.

[0058] like Figure 3 、 4 As shown in Figure 7, as an embodiment, the operating member 22 includes an operating portion 224 protruding from the recovery body 1, and the operating portion 224 is disc-shaped. At the same time, the operating portion 224 also protrudes from the recovery body 1, so as to facilitate medical staff to operate it. The operating member 22 also includes a winding portion 222 connected to the operating portion 224, and the fixing portion 221 is located at the winding portion 222, so that the connecting wire 7 is connected to the operating member 22 through the fixing portion 221, and at the same time, it can also be wound on the winding portion 222.

[0059] Optionally, the winding portion 222 is a cylindrical structure, which is coaxially arranged with the operating portion 224. One end of the winding portion 222 is fixedly connected to the operating portion 224, and the other end is protruded along the axial direction of the operating portion 224, thereby providing a winding space for the connecting wire 7 to be wound around the outer surface of the winding portion 222.

[0060] Optionally, the winding portion 222 and the operating portion 224 are integrally formed.

[0061] Optionally, the operating portion 224 is a disc-shaped structure, which further facilitates medical staff to operate it with their fingers and improves operational convenience.

[0062] As a possible implementation, the operating portion 224 may also be a polygonal structure, such as a pentagon or a hexagon.

[0063] like Figure 6 As shown, as an embodiment, the fixing portion 221 includes a protrusion fixed to the connecting wire 7, that is, the fixing portion 221 can be a protrusion provided on the outer surface of the winding portion 222, and one end of the connecting wire 7 is wound on the protrusion, thereby realizing the connection between the connecting wire 7 and the fixing portion 221. Of course, the fixing portion 221 can also include at least two first through holes provided on the outer surface of the winding portion 222, that is, one end of the connecting wire 7 passes through the two first through holes in sequence, and is knotted after passing through the last first through hole, thereby also realizing the connection between the connecting wire 7 and the fixing portion 221.

[0064] 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 winding portion 222, and then the connecting wire 7 and the winding portion 222 are glued together.

[0065] like Figure 6 and 7 As shown, as an embodiment, the operating member 22 is provided with a mounting groove 225 that passes through the operating portion 224 and the winding portion 222, and the mounting groove 225 is used to install the one-way rotating member 21, so that medical staff can directly drive the operating member 22, and the rotation direction of the driving operating member 22 relative to the rod body 3 is the direction in which 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 operating member 22 rotate synchronously 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.

[0066] Optionally, since the mounting groove 225 passes through the operating part 224 and the winding part 222, the position of the one-way rotating part 21 in the mounting groove 225 is not fixed, and it can be located in the mounting groove 225 in the winding part 222 or in the mounting groove 225 in the operating part 224.

[0067] like Figure 7 As shown, optionally, a second through hole 226 is opened 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 constitutes the installation slot 225 that passes through the operating portion 224 and the winding portion 222 .

[0068] 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. It 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.

[0069] Optionally, the outer ring of the one-way bearing is arranged to fit the peripheral wall of the mounting groove 225 , so that the one-way bearing and the operating member 22 can rotate synchronously relative to the rod body 3 .

[0070] like Figure 1 、 2As shown in Figure 6, as an embodiment, the recovery body 1 includes a recovery handle 11 and a cover body 12 detachably connected to the recovery handle 11, thereby facilitating the assembly of other parts in the cover body 12; the rod body 3 passes through the cover body 12 perpendicular to the axial direction of the recovery handle 11, thereby facilitating the operation of the medical staff, 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.

[0071] 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.

[0072] like Figure 1 and 5 As shown, as an embodiment, the retractable wire assembly includes a flange 31 located at one end of the rod body 3, the flange 31 is fixedly connected to the rod body 3, and a first connecting hole 123 is provided on the side of the cover body 12 facing the flange 31. 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.

[0073] Optionally, the flange 31 and the rod body 3 may be integrally formed or threadedly connected.

[0074] like Figure 4 As shown, as an embodiment, the retractable wire assembly 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. On the one hand, it cooperates with the flange 31 to prevent the rod body 3 from falling off the cover body 12. On the other hand, it is convenient for medical staff to drive the rod body 3 to rotate through the rotating cap 6, thereby improving the convenience of operation.

[0075] Optionally, in order to further increase the friction between the rotating cap 6 and the medical staff, a plurality of grooves are provided on the circumference of the rotating cap 6 .

[0076] like Figure 5 As shown, as an embodiment, the retractable wire assembly 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 being arranged 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.

[0077] 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.

[0078] like Figure 4As shown, as an embodiment, 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 a locking tooth groove 126, and the locking gear is engaged with the locking tooth groove 126, thereby preventing the rod body 3 from rotating accidentally relative to the cover body 12.

[0079] like Figure 4 As shown, 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, and 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.

[0080] like Figure 4 As shown, as an embodiment, the convex cylinder 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.

[0081] like Figure 1 As shown, as an embodiment, a telescopic member 5 is further provided between the flange 31 and the cover body 12, and the two ends of the telescopic member 5 are respectively in contact with the flange 31 and the cover body 12, so that when the rod body 3 does not need to rotate relative to the cover body 12, the elastic force generated by the telescopic member 5 causes the locking gear to always engage with the locking tooth groove 126, thereby avoiding medical staff from misoperating and releasing the heart valve prosthesis prematurely.

[0082] Optionally, the telescopic member 5 can be a spring. When the rod body 3 needs to rotate relative to the cover body 12, that is, when multiple single rotating bodies 2 need to be driven synchronously to reel in or release the line, the medical staff directly pushes the flange 31 toward the rotating cap 6, and the thrust provided is greater than the elastic force of the telescopic member 5. At the same time, the locking gear is separated from the locking tooth groove 126. At this time, the rod body 3 is driven to rotate by the rotating cap 6, thereby realizing the operation of reeling in or releasing the line.

[0083] 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.

[0084] like Figure 7As shown, 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 grooves 32 are respectively clamped on the clamping grooves 32, and the three single swivels 2 are located between the two clamping parts 4. The clamping parts 4 limit and stop the single swivel 2 to prevent the single swivel 2 from moving along the axial direction of the rod body 3, further affecting the winding or releasing operation of the winding and releasing assembly.

[0085] like Figure 3 、 4 As shown in Figure 6, as an embodiment, the three single rotating bodies 2 are arranged in sequence along the axial direction of the rod body 3, and the recovery device includes a stop block 9, which is embedded in the winding portion 222 of the operating member 22 near the side of the rotating cap 6, and is used to block the notch of the mounting groove 225 of the operating member 22 near the side of the rotating cap 6, to prevent the one-way rotating member 21 in the mounting groove 225 of the operating member 22 near the side of the rotating cap 6 from falling off from the mounting groove 225; in addition, the stop block 9 also fits with the clamping member 4 on the corresponding side, increases the contact area with the clamping member 4, and further improves the stopping effect of the clamping member 4.

[0086] Optionally, one of the clamping members 4 fits with the stop block 9 , while the other clamping member 4 fits with the operating portion 224 of the operating member 22 close to the side of the flange 31 .

[0087] like Figure 7 As shown, as an embodiment, multiple single rotating bodies 2 are arranged in sequence along the axial direction of the rod body 3, the operating member 22 close to the side of the rotating cap 6 is the first operating member, the operating member 22 abutting against the first operating member is the second operating member, and the operating member 22 abutting against the second operating member is the third operating member, wherein the operating parts 224 of the first operating member and the second operating member facing away from the side of the rotating cap 6 are both provided with a plug-in groove 223 adapted to the winding part 222, so that the winding part 222 of the second operating member can be inserted into the plug-in groove 223 of the first operating member, and the winding part 222 of the third operating member can be inserted into the plug-in groove 223 of the second operating member, thereby shortening the axial distance occupied by the three operating members 22 on the rod body 3 and improving space utilization; on the other hand, it can prevent the connecting wire 7 corresponding to the operating member 22 from being entangled in other operating members 22, resulting in the inability to reel in or release the wire normally.

[0088] The second operating member 222 is inserted into the plug slot 223 on the first operating member, shortening the axial distance between the second operating member and the third operating member 3 in the rod body 3. At the same time, it can also prevent the connecting line 7 connected to the second operating member from being twisted around the second operating member when winding or releasing the line, resulting in failure to wind or release the line normally.

[0089] Optionally, the first operating member, the second operating member and the third operating member are only for the convenience of describing the three operating members 22 on the rod body 3, and do not specifically limit the installation positions of the three operating members 22 on the rod body 3. That is, the operating member 22 close to the flange 31 is not provided with a plug-in groove 223, while the operating member 22 close to the rotating cap 6 and the operating member 22 abutting therewith are provided with a plug-in groove 223.

[0090] like Figure 1 and 5 As shown, as an embodiment, a plurality of movable openings 122 are provided on the cover body 12, and an movable chamber is provided inside the cover body 12, which is communicated with the movable openings 122. The number of the movable openings 122 corresponds to the number of the single rotating bodies 2, and each operating part 224 is partially protruded from the movable opening 122, so that medical staff can drive the operating part 224 conveniently, and the other part of each operating part 224 is located in the movable chamber.

[0091] like Figure 6 As shown, as an embodiment, the recovery handle 11 is provided with a threading channel 111 for guiding the connecting wire 7, and the cover body 12 is further provided with a threading hole 121 on the distal side. The threading holes 121 are provided in three numbers, and the three threading holes 121 are all connected to the active chamber. Each connecting wire 7 passes through the threading channel 111 and through the corresponding threading hole 121, and is connected to the corresponding fixing parts 221 on the three winding parts 222 in the active chamber.

[0092] like Figure 3 and 6As shown, as an embodiment, the recovery device includes a support member 8, which is arranged in the movable chamber and fixedly connected to the cover body 12 by bolts. The support member 8 is used to support the operating member 22 near the side of the rotating cap 6. Specifically, a notch 81 is provided on the support member 8, and the notch 81 is adapted to the winding portion 222 on the operating member 22 near the side of the rotating cap 6, so that the winding portion 222 on the operating member 22 near the side of the rotating cap 6 can be embedded in the notch 81. On the one hand, the support member 8 plays a supporting role for the operating member 22 near the side of the rotating cap 6, and on the other hand, it avoids the connecting line 7 connected to the operating member 22 near the side of the rotating cap 6 from getting stuck on other parts during the winding or unwinding process, resulting in failure of the winding or unwinding function.

[0093] like Figure 8 As shown, in the second aspect, an embodiment of the present application introduces a heart valve prosthesis delivery device, including a handle 101, and the connecting line recovery device of the heart valve prosthesis introduced in the first aspect, and the recovery body 1 is arranged at the proximal end of the handle 101, so as to facilitate the operation of medical staff.

[0094] 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 .

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

Claims

1. A recycling device for recycling connecting wires, characterized in that: include: A recovery body connected to the handle and a retractable wire assembly assembled on the recovery body; The wire retracting and releasing assembly includes a rod body that can rotate relative to the recovery body, and several single rotating bodies arranged on the rod body and can rotate unidirectionally relative to the rod body for wire retracting. By driving the rod body to drive the multiple single rotating bodies to rotate, multiple connecting wires can be reeled in or released at the same time, and the position of the heart valve prosthesis can be fine-tuned by individually controlling the corresponding single rotating bodies; each of the single rotating bodies is provided with a fixing portion for connecting the connecting wire and a winding portion for winding the connecting wire.

2. The recovery device according to claim 1, characterized in that: The single rotating body comprises a one-way rotating member and an operating member connected with the one-way rotating member, the one-way rotating member is installed on the rod body, and the operating member is assembled on the rod body through the one-way rotating member.

3. The recovery device according to claim 2, characterized in that: The operating member includes an operating portion protruding from the recycling body and the winding portion connected to the operating portion, and the fixing portion is located on the winding portion.

4. The recovery device according to claim 3, characterized in that: The fixing portion includes a protrusion or at least two first through holes for fixing with the connecting wire.

5. The recovery device according to claim 3 or 4, characterized in that: The operating member is provided with a mounting groove penetrating the operating portion and the winding portion, and the one-way rotating member is located in the mounting groove.

6. The recovery device according to any one of claims 2 to 4, characterized in that: The one-way rotating member is a one-way bearing.

7. The recovery device according to claim 3 or 4, characterized in that: The recovery body comprises a recovery handle and a cover body detachably connected to the recovery handle, and the rod body penetrates the cover body perpendicular to the axial direction of the recovery handle.

8. The recovery device according to claim 7, characterized in that: The wire retracting and releasing assembly includes a flange located at one end of the rod body, the flange is fixedly connected to the rod body, and a first connecting hole is provided on a side of the cover body facing the flange, and the diameter of the flange is larger than the diameter of the first connecting hole.

9. The recovery device according to claim 8, characterized in that: The wire retracting and releasing assembly comprises a rotating cap which can drive the entire rod body to rotate, and the rotating cap is located at the other end opposite to the flange.

10. The recovery device according to claim 9, characterized in that: The wire retracting and releasing assembly also includes a positioning portion arranged on the rotating cap to cooperate with the cover body to prevent the rod body from accidentally rotating.

11. The recovery device according to claim 10, 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.

12. The recovery device according to claim 11, 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.

13. The recovery device according to claim 12, 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.

14. The recovery device according to any one of claims 11 to 13, 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 contact with the flange and the cover body, so as to mesh the locking gear with the locking tooth groove.

15. The recovery device according to any one of claims 9 to 13, characterized in that: The outer surface of the rod body is provided with two clamping grooves at intervals; The recovery device includes a stop block, which is embedded in the winding part of the operating part close to the rotating cap side. The recovery device also includes two clamping parts, which correspond to the clamping grooves. The multiple single swivels are located between the two clamping parts, one of the clamping parts is in contact with the single swivel away from the rotating cap side, and the other clamping part is in contact with the stop block. The two clamping parts are used to limit and stop the multiple single swivels along the axial direction of the rod body.

16. The recovery device according to any one of claims 9 to 13, characterized in that: The multiple single rotating bodies are arranged in sequence along the axial direction of the rod body, wherein the operating member close to the rotating cap is the first operating member, and the operating member abutting against the first operating member is the second operating member, and the first operating member and the second operating member are both provided with a plug-in groove for adapting to the winding part on the side away from the rotating cap.

17. The recovery device according to any one of claims 9 to 13, characterized in that: The cover body is provided with a plurality of movable openings, the number of the movable openings corresponds to the number of the single rotating bodies, and the operating portion is partially protruded from the movable openings.

18. The recovery device according to claim 17, characterized in that: The recovery handle is provided with a threading channel for guiding the connecting line, the cover body is provided with an active chamber, the active chamber is connected to the active opening, and one side of the far end of the cover body is also provided with a threading hole for guiding the connecting line to enter the active chamber.

19. The recovery device according to claim 18, characterized in that: It also includes a support member, which is arranged in the movable chamber and fixedly connected to the cover body. The support member is provided with a notch, and the winding part on the operating member close to the rotating cap side is embedded in the notch.

20. 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 19, wherein the recovery body is arranged at the proximal end of the handle.

21. The heart valve prosthesis delivery device according to claim 20, characterized in that: The recycling body is detachably connected to the handle.

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