Control handle and delivery system

Abstract

The application relates to a control handle and a conveying system, the control handle comprising a shell, two pull wire groups and a swing piece. When the catheter is located in an outer tube with a bending shape or in a blood vessel with a bending shape, the shell can drive the catheter to rotate around the central axis when the control handle is rotated in the circumferential direction, and the distal end of the catheter is connected to two connecting portions of the swing piece through the two pull wire groups, so that the control bending plane has greater axial rigidity, in other words, the catheter has greater torsional resistance at this time, the two pull wire groups of the catheter have two opposite tensile forces, the swing piece is deflected around the rotation axis, the tensile force of the pull wire group is balanced, and the torsional positioning of the distal end of the catheter is realized. Therefore, the torsional stability of the catheter is good, accurate positioning can be realized, and the success rate of the operation is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a control handle and a delivery system. BACKGROUND

[0002] The "edge-to-edge" repair technique of interventional therapy has obvious treatment effect on, for example, mitral regurgitation, and has attracted widespread attention.

[0003] The interventional therapy has the advantages of small trauma to patients, fast recovery and low cost. The mitral valve repair surgery through the interventional therapy is to send an implant to the diseased valve through a delivery system via the femoral vein to achieve clamping treatment of the valve. The surgical approach is from the femoral vein to the right atrium, through the interatrial septum to the left atrium. The entire approach is complex and requires high positioning accuracy. The compliance of the catheter in the blood vessel and the positioning requirement in the atrium are also extremely high.

[0004] The handle serves as a driving source of the implant. During the operation, the handle is controlled to control the distal end of the implant through the pull wire to achieve positioning of the implant and the valve. Due to the complex approach and limited space in the atrium, positioning is challenging. In the positioning process, the bending control and the twisting control of the implant need to be satisfied, that is, the bent implant is twisted around its own axis to a certain extent to cooperate with the accurate positioning of the implant. However, the conventional delivery system has the problem of inaccurate positioning during the bending control and the twisting control of the implant, which leads to surgical failure. SUMMARY

[0005] Therefore, the present application provides a control handle and a delivery system to solve one or more technical problems in the prior art.

[0006] The technical scheme is as follows: a control handle, comprising:

[0007] a housing, the housing being used to connect with a bendable catheter and being capable of driving the catheter to rotate around the central axis of the catheter;

[0008] a swing member, the swing member being rotationally connected with the housing, the rotation axis of the swing member being perpendicular to the axial direction of the housing, and the swing member being provided with two connection portions respectively located on the opposite sides of the rotation axis; and

[0009] two pull wire groups, one end of each of the two pull wire groups being used to connect with the distal end of the catheter, and the other end of each of the two pull wire groups being connected with the corresponding connection portion of the swing member.

[0010] In one of the embodiments, the radius of the conduit is defined as R, the connecting part swings between two limit positions, the swing range of the connecting part between the two limit positions is the path length of the connecting part swinging from one of the limit positions to the other limit position, and the swing range is greater than 0 and less than or equal to 8R.

[0011] In one of the embodiments, the position of the connecting part when the connecting part is perpendicular to the central axis of the conduit is defined as the initial position of the connecting part, the single-side swing range of the connecting part is the path length of the connecting part swinging from the initial position to one of the limit positions, and the single-side swing range is greater than 0 and less than or equal to 4R.

[0012] In one of the embodiments, the control handle further comprises a limiting part arranged on one side of the swing part and used for abutting with the swing part, or two limiting parts respectively arranged on opposite sides of the swing part and used for abutting with the swing part.

[0013] In one of the embodiments, the swing part is provided with a movable opening for passing the conduit, the wall of the movable opening close to the connecting part is an abutting wall, the minimum distance between the central axis of the conduit and the abutting wall is defined as S, the radius of the conduit is defined as R, and S and R satisfy the relationship S:R=3.5-5:1.

[0014] In one of the embodiments, the two connecting parts are symmetrically arranged about the rotation axis.

[0015] In one of the embodiments, the connecting part is provided with a first threading hole and a locking hole; the locking hole and the first threading hole are cross arranged and communicate with each other, and the locking part is arranged in the locking hole.

[0016] In one of the embodiments, the connecting part is further provided with a second threading hole; the width of the first threading hole is greater than that of the second threading hole.

[0017] In one of the embodiments, the control handle further comprises a protective layer arranged on the outer wall of the pull wire group.

[0018] In one of the embodiments, the control handle further comprises a driving assembly, the driving assembly is connected with the shell, the driving assembly comprises a pushing part arranged inside the shell and moving along the axial direction of the shell, and the swing part is rotationally connected with the pushing part.

[0019] In one of the embodiments, the driving assembly further comprises a first sleeve arranged outside the pushing member, a knob connected with the first sleeve, and an inner rod fixedly connected with the shell; the first sleeve is arranged in rotation in the shell, the outer wall of the pushing member is provided with a first thread, and the inner wall of the first sleeve is provided with a second thread matched with the first thread; the pushing member is provided with a first through hole and is arranged outside the inner rod through the first through hole, and the pushing member and the inner rod move in relative to each other along the axial direction of the shell; the inner rod is provided with a second through hole and is arranged outside the catheter through the second through hole.

[0020] In one of the embodiments, the opposite two side walls of the inner rod are both provided with a first wire outlet groove communicated with the second through hole and arranged in the axial direction, and the opposite two side walls of the pushing member are both provided with a second wire outlet groove communicated with the first through hole and arranged in the axial direction, and the two second wire outlet grooves are arranged opposite to the two first wire outlet grooves respectively.

[0021] In one of the embodiments, the first sleeve is provided with a first limiting part, and the shell is provided with a second limiting part axially limitedly matched with the first limiting part.

[0022] In one of the embodiments, the outer wall of the inner rod is provided with a first guide part, and the inner wall of the first through hole is provided with a second guide part axially guidedly matched with the first guide part.

[0023] In one of the embodiments, the control handle further comprises a first fixed cap connected with the distal end of the inner rod, and an elastic sleeve communicated with the first fixed cap; the elastic sleeve and the first fixed cap are both arranged outside the catheter.

[0024] In one of the embodiments, the opposite two sides of the proximal end of the pushing member are provided with two mounting parts, the opposite two ends of the swinging member are rotatably connected with the two mounting parts respectively, and the swinging member abuts against the proximal end of the pushing member when swinging to one of the limit positions.

[0025] In one of the embodiments, a cap is further connected on the proximal end of the pushing member, and the swinging member is movably arranged in the inside of the cap, and the swinging member abuts against the cap when swinging to the other limit position.

[0026] In one of the embodiments, the shell comprises a first sub-shell and a second sub-shell connected with each other in splicing manner.

[0027] In one of the embodiments, the proximal end of the shell is further arranged outside a fixed sleeve, the outer wall of the fixed sleeve is provided with a concave surface arranged in a surrounding manner, the concave surface is used for being connected with a bracket, and the outer wall of the fixed sleeve is provided with a mark.

[0028] And / or, the shell is used to connect with the proximal end of the catheter;

[0029] And / or, the control handle further comprises a second fixing cap sleeved on the proximal end of the shell; the inner wall of the second fixing cap is provided with a third thread, and the outer wall of the proximal end of the shell is provided with a fourth thread matched with the third thread.

[0030] In one of the embodiments, the shell is made of transparent or translucent material, and the pushing member is further provided with an indicating member; or, the shell is provided with a perspective window, and the pushing member is further provided with an indicating member arranged correspondingly with the perspective window.

[0031] A delivery system comprising the control handle, the delivery system further comprising a catheter, the catheter being sleeved in the shell, and the distal end of the catheter extending out of the shell.

[0032] In one of the embodiments, the delivery system further comprises an outer tube and a bending control device, the catheter is further sleeved in the outer tube, the outer tube is located on the distal end side of the shell, and the bending control device is used to bend the outer tube.

[0033] The control handle and the delivery system described above, when the catheter is located in the outer tube with a bending shape or in the blood vessel with a bending shape, the shell can drive the catheter to rotate around the central axis by rotating the control handle in the circumferential direction, and the distal end of the catheter is connected with the two connecting parts of the swing member through the two wire groups, so that there is a larger axial stiffness in the bending plane, in other words, the catheter has a larger torsional resistance at this time, the two wire groups of the catheter have two opposite tension forces, so that the swing member is deflected around the rotation axis, that is, one of the wire groups of the swing member is deflected to the distal end, and the other wire group is deflected to the proximal end at the same time, that is, the swing member can rotate around the rotation axis and release the tension in the catheter, so as to balance the tension of the wire group and realize the torsional positioning of the distal end of the catheter, so it can be seen that the torsional stability of the catheter is good, and the precise positioning can be realized, so as to greatly improve the success rate of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings which form a part of this application are intended to provide further understanding of this application and are incorporated herein in connection with this application. The description of the application and its accompanying drawings are intended to explain the application and are not intended to limit the application.

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0036] Figure 1 Structure diagram of a control handle according to an embodiment of the application;

[0037] Figure 2 Structure diagram of a control handle according to an embodiment of the application; Figure 1 Axial sectional view of the structure shown;

[0038] Figure 3 Structure diagram of a swing member according to an embodiment of the application when deflected;

[0039] Figure 4 Structure diagram of a swing member according to an embodiment of the application when deflected; Figure 3 Enlarged structure diagram at A;

[0040] Figure 5 Structure diagram of a push member and a swing member according to an embodiment of the application;

[0041] Figure 6 Structure diagram of a swing member according to an embodiment of the application;

[0042] Figure 7 Structure diagram of an inner rod according to an embodiment of the application;

[0043] Figure 8 Structure diagram of a delivery system according to an embodiment of the application;

[0044] Figure 9 Structure diagram of a catheter according to an embodiment of the application when first controlled to bend;

[0045] Figure 10 Structure diagram of a catheter according to an embodiment of the application when second controlled to bend;

[0046] Figure 11 Structure diagram of a catheter according to an embodiment of the application when second controlled to bend and twisted;

[0047] Figure 12 Structure diagram of a fixing sleeve according to an embodiment of the application.

[0048] 10, housing; 11, perspective window; 12, first sub-housing; 13, second sub-housing; 20, driving assembly; 21, pusher; 211, threaded part; 212, first thread; 213, second wire outlet groove; 214, mounting part; 22, first sleeve; 23, knob; 24, inner rod; 241, first wire outlet groove; 242, first guide part; 30, swing piece; 31, connecting part; 311, first wire hole; 312, second wire hole; 32, locking piece; 33, rotating shaft; 34, movable opening; 341, abutting wall; 40, guide tube; 50, indicating piece; 60, first fixed cap; 70, elastic sleeve; 80, fixed sleeve; 81, concave surface; 82, indicating mark; 91, second fixed cap; 92, emptying seat; 200, outer tube; 300, bending control instrument; 400, pull wire set. DETAILED DESCRIPTION

[0049] To make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in conjunction with the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0050] In the present embodiment, "distal end" refers to the side far from the operator; "proximal end" refers to the side close to the operator; axial direction refers to the direction parallel to the line connecting the center of the distal end and the center of the proximal end of the instrument or component; radial direction refers to the direction perpendicular to the axial direction; and circumferential direction refers to the direction around the axial direction.

[0051] In the present embodiment, the implant includes but is not limited to a catheter. For the purpose of description, the implant will be described as a catheter in the present embodiment.

[0052] It should be noted that the bending control in the present embodiment refers to controlling the bending degree of the catheter in a plane. The twist control refers to controlling the twist of the catheter around its own axis after bending.

[0053] As described in the background, the existing delivery system has the problem of inaccurate positioning of the catheter during bending and twist positioning. The inventors have found that the reason for this problem is that the tension in the catheter cannot be released during the twist positioning after the bending control by the delivery system, which easily causes damage to the catheter and inaccurate positioning.

[0054] Based on the above reasons, the present application provides a control handle and a delivery system, which can balance the tension generated by the twist of the catheter in the bending state, and thus achieve accurate positioning of the distal end of the catheter, with simple structure and convenient operation.

[0055] Referring to Figures 1 to 5 , Figure 1 Fig. 1 shows a schematic view of the structure of a control handle according to an embodiment of the present application, Figure 2 Fig. 2 shows a schematic view of the structure of a control handle according to an embodiment of the present application, Figure 1 Fig. 3 shows an axial sectional view of the structure shown in Fig. 2, Figure 3 Fig. 4 shows a schematic view of the structure of a control handle according to an embodiment of the present application, Figure 4 Fig. 5 shows a schematic view of the structure of a control handle according to an embodiment of the present application, Figure 3 Fig. 6 shows an enlarged schematic view of the structure at A in Fig. 5, Figure 5 Fig. 7 shows a schematic view of the structure of a control handle according to an embodiment of the present application. The control handle according to an embodiment of the present application comprises a housing 10, an oscillating member 30 and two pull wire sets 400. The housing 10 is used to be connected to a bendable catheter 40 and can drive the catheter 40 to rotate around the central axis thereof. Specifically, the housing 10 is directly or indirectly connected to the proximal end of the catheter 40. Of course, the housing 10 can also be directly or indirectly connected to other parts of the catheter 40, which is not specifically limited herein and can be flexibly set and adjusted according to actual needs.

[0056] Here, since the catheter 40 can be bent, the bending can be achieved by the bending instrument 300 in actual use, or the catheter 40 can be bent by the blood vessel when it enters the blood vessel, or the catheter 40 can be bent by other ways, which is not limited herein.

[0057] In addition, the oscillating member 30 is rotationally connected to the housing 10, and the rotation axis 33 of the oscillating member 30 (as indicated by the arrow Z in Fig. 3) is perpendicular to the axial direction of the housing 10. The oscillating member 30 is provided with two connection portions 31 located on opposite sides of the rotation axis 33. Figure 5 One end of each of the two pull wire sets 400 is used to be connected to the distal end of the catheter 40, and the other end of each of the two pull wire sets 400 is connected to the corresponding connection portion 31.

[0058] Optionally, the number of pull wires of each pull wire set 400 can be flexibly set to one, two or more according to actual needs, which is not limited herein. When the number of pull wires of the pull wire set 400 is more than two, the pull wires can be wound together or have a spacing therebetween. When the number of pull wires of the pull wire set 400 is more than two, the number of wire passing holes, the number of locking holes and the number of wire outlet grooves on the connection portion 31 corresponding to the pull wires are also flexibly adjusted and set to meet the requirement that the pull wire set 400 can extend from the distal end of the catheter 40 to the connection portion 31 and be connected to the connection portion 31. It should be noted that the following designs are based on the example that the number of pull wires of each pull wire set 400 is one or more than two and wound together. Figure 1 to Fig. 7, Figure 11The product structure shown, but not limited to.

[0059] Optionally, the connection mode includes but is not limited to bonding, clamping, welding, riveting, winding fixation, using various types of fasteners, or designing an integrated structure, etc. In addition, specifically, one end of the two pull wire groups 400 is connected to the same side of the distal end of the catheter 40 to achieve the driving of the bending of the distal end of the catheter 40 when pulling the same side of the distal end of the catheter 40.

[0060] The control handle and the delivery system described above, when the catheter 40 is located in the outer tube 200 with a curved shape or in the blood vessel with a curved shape, the control handle is rotated as a whole in the circumferential direction of the shell 10, the shell 10 drives the catheter 40 to rotate around the central axis, and the distal end of the catheter 40 is connected to the two connection parts 31 of the swing piece 30 through the two pull wire groups 400, so that there is a larger axial stiffness in the control bending plane. In other words, the catheter 40 has a larger torsional resistance at this time, and the two pull wire groups 400 of the catheter 40 have two opposite tension forces, so that the swing piece 30 is deflected around the rotation axis 33 line, that is, one of the pull wire groups 400 of the swing piece 30 is deflected to the distal end, and the other pull wire group 400 is deflected to the proximal end at the same time, that is, the swing piece 30 can rotate around the rotation axis 33 line and release the tension in the catheter 40, balance the tension of the pull wire group 400, and realize the torsional positioning of the distal end of the catheter 40. As can be seen, the torsional stability of the catheter 40 is good, and precise positioning can be achieved, greatly improving the success rate of the operation.

[0061] Specifically, the control handle further includes a driving assembly 20. The driving assembly 20 is connected to the shell 10, and the driving assembly 20 includes a pushing piece 21 arranged inside the shell 10 and moving along the axial direction of the shell 10 (such as Figure 2 and Figure 5 indicated by the arrow O) The swing piece 30 is rotationally connected to the pushing piece 21.

[0062] It should be noted that the swing piece 30 and the shell 10 have some process deviations in the process of machining and assembling, that is, the rotation axis 33 line of the swing piece 30 and the axial direction of the shell 10 are not strictly perpendicular in the mathematical sense.

[0063] It should also be noted that, optionally, the outer shell 10 is fixedly connected to the conduit 40, thereby enabling the conduit 40 to rotate circumferentially around its central axis. The connection method can be either direct or indirect, including but not limited to bonding, snap-fitting, riveting, interference fit, etc., which can be flexibly adjusted and set according to actual needs. This can prevent the proximal end of the conduit 40 from shifting axially during the tension of the distal end of the conduit 40 under the tension of the pull wire group 400, thereby ensuring the stable operation of the conduit 40 in bending and torsion.

[0064] Please see Figure 5 as well as Figure 6 In one embodiment, the two connecting parts 31 are arranged symmetrically about the rotation axis 33. This ensures that after the two connecting parts 31 are connected to the two pull wire groups 400 respectively, the two pull wire groups 400 are subjected to balanced forces. If an asymmetrical arrangement is used, the two pull wire groups 400 will be subjected to uneven forces during the bending process, which may cause one of them to fail first.

[0065] Please see Figure 5 as well as Figure 6 In one embodiment, the connecting portion 31 is provided with a first threading hole 311 and a second threading hole 312. The width of the first threading hole 311 (e.g., Figure 6 The width of W1 shown is greater than the width of the second threading hole 312 (e.g., Figure 6 As shown in W2), the diameter of the second threading hole 312 is larger than the diameter of the pull wire assembly 400, allowing the pull wire assembly 400 to pass through. Furthermore, the connecting part 31 is also provided with a locking hole, which is intersected and connected to the first threading hole 311, and a locking member 32 is installed in the locking hole. Specifically, the locking hole is perpendicular to the first threading hole 311 to ensure that the locking member 32 tightly presses and fixes the pull wire assembly 400 located in the first threading hole 311. Thus, when fixing the pull wire assembly 400 to the connecting part 31, the pull wire assembly 400 is sequentially threaded through the first threading hole 311 and the second threading hole 312, wound around the connecting part 31, and the locking member 32 tightly presses against the pull wire assembly 400, thereby fixing the pull wire assembly 400 to the connecting part 31. The second threaded hole 312, being relatively narrow, serves to position the pull wire assembly 400, ensuring its central position and balanced force distribution on the sides of the swing member 30. The first threaded hole 311, being relatively wide, facilitates the insertion of the pull wire assembly 400 into it. Furthermore, when the length of the pull wire assembly 400 needs adjustment, it can be quickly adjusted by loosening the locking member 32.

[0066] In one embodiment, the control handle further includes a protective layer sleeved on the outer wall of the pull cable assembly 400. Thus, the protective layer protects the pull cable assembly 400 and increases the area of ​​the locking member 32 for securely clamping the pull cable assembly 400.

[0067] In the embodiment, the first threading hole 311 and the second threading hole 312 each include, but are not limited to, a square hole, a waist-shaped hole, and of course can also be a circular hole, an oval hole, or a hole of other shapes, and can be set according to actual needs, without being limited herein.

[0068] Of course, as an optional solution, the connecting portion 31 can also be provided with one threading hole, for example, the second threading hole 312 is omitted, or can be provided with more than three threading holes. In addition, the connecting portion 31 can also be provided as a terminal, for example, a protrusion, a hook, a column, a buckle, etc. provided on the swing member 30, as long as it can be used to fix the pull wire set 400.

[0069] In an embodiment, the locking hole is, for example, a threaded hole, a clamping hole, a bolt hole, a riveting hole, etc., and the locking member 32 is correspondingly provided.

[0070] Please refer to Figure 1 In an embodiment, the housing 10 is provided with a perspective window 11. In this way, the push member 21 can be observed through the perspective window 11. On the one hand, the stroke position of the push member 21 during the bending control process can be determined, and the bending control state of the catheter 40 can be understood according to the stroke position of the push member 21. On the other hand, the bending control trend during the operation can also be judged by observing the moving direction, so as to avoid misoperation. In addition, specifically, the push member 21 is further provided with an indicating member 50 correspondingly arranged with the perspective window 11. The indicating member 50 arranged on the push member 21 can be observed as a reference. Alternatively, the indicating member 50 includes, but is not limited to, a indicating cap sleeved on the outside of the swing member 30 and connected to the proximal end of the push member 21. Alternatively, the proximal end of the push member 21 is provided with a threaded portion 211, the indicating cap is provided with a thread corresponding to the threaded portion 211, the indicating member 50 is covered on the outside of the swing member 30 and the mounting portion 214, and is connected to the proximal end of the push member 21.

[0071] In an embodiment, at least one circle of scale lines is arranged on the outer wall of the indicating cap, which is used to observe the moving position of the push member 21 through the perspective window 11 during the bending control process.

[0072] Specifically, the perspective window 11 is connected to the housing 10 in a manner including, but not limited to, buckle connection, adhesion, etc.

[0073] It should be noted that the specific setting form of the drive assembly 20 is various, which can be an electric moving mode, for example, a motor screw drive form, a cylinder pushing form, a hydraulic cylinder pushing form, a magnetic attraction pushing form, etc. It can also be a manual moving mode, for example, a knob 23 pushing form, a rack driving form, etc. as long as it can realize the movement of the push member 21 along the axial direction.

[0074] As an optional solution, the whole shell 10 is made of transparent or semi-transparent material. In addition, the shell 10 or the perspective window 11 is provided with scale marks as a reference. In addition, the pushing member 21 is provided with an indicating member 50. In this way, the stroke position of the pushing member 21 during the bending control process inside the shell 10 can be observed, and the bending state of the catheter 40 can be known according to the stroke position of the pushing member 21.

[0075] Please refer to Figures 2 to 5 and Figure 7 , Figure 7 The structure of the inner rod 24 in an embodiment of the present application is shown. In an embodiment, the driving assembly 20 further comprises a first sleeve 22 sleeved outside the pushing member 21, a knob 23 connected with the first sleeve 22, and an inner rod 24 fixedly connected with the shell 10. The first sleeve 22 is rotationally arranged inside the shell 10, the pushing member 21 is a pushing rod, the outer wall of the pushing member 21 is provided with a first thread 212, and the inner wall of the first sleeve 22 is provided with a second thread (not shown) matched with the first thread 212. The pushing member 21 is provided with a first through hole and is sleeved outside the inner rod 24 through the first through hole, and the pushing member 21 and the inner rod 24 axially move relative to each other. The inner rod 24 is provided with a second through hole and is sleeved outside the catheter 40 through the second through hole. In this way, when the knob 23 is rotated, the knob 23 drives the first sleeve 22 to synchronously rotate, and the inner wall of the first sleeve 22 and the outer wall of the pushing member 21 are threadedly matched, and the pushing member 21 and the inner rod 24 axially move relative to each other. Thus, the pushing member 21 can be axially driven to move by rotating the knob 23, the axial movement is relatively stable, the movement distance is controllable, and the catheter 40 can be well controlled to bend.

[0076] In an embodiment, the opposite two side walls of the inner rod 24 are provided with first wire outlet grooves 241 communicated with the second through hole and arranged along the axial direction, the opposite two side walls of the pushing member 21 are provided with second wire outlet grooves 213 communicated with the first through hole and arranged along the axial direction, and the two second wire outlet grooves 213 are oppositely arranged with the two first wire outlet grooves 241. In this way, the catheter 40 is located in the second through hole of the inner rod 24, one of the wire groups 400 is connected with one of the connecting portions 31 through one set of opposite first wire outlet grooves 241 and second wire outlet grooves 213, and the other wire group 400 is connected with the other connecting portion 31 through the other set of opposite first wire outlet grooves 241 and second wire outlet grooves 213.

[0077] In an embodiment, the first thread 212 is located at the distal end of the pushing member 21, and the swinging member 30 is located at the proximal end of the pushing member 21.

[0078] In one embodiment, the knob 23 is located at the distal end of the housing 10. In addition, the knob 23 is arranged in the interior of the housing 10 and connected with the first sleeve 22, and the knob 23 can rotate around the circumference of the housing 10.

[0079] In one embodiment, the first sleeve 22 is provided with a first limiting part, and the housing 10 is provided with a second limiting part axially limited with the first limiting part. In this way, the first limiting part and the second limiting part are axially limited with each other, which can avoid the first sleeve 22 from moving along the axial direction, so that the knob 23 can stably drive the first sleeve 22 to rotate around the circumference when the knob 23 rotates.

[0080] It should be noted that the first limiting part includes but is not limited to a convex part, a concave part, etc. When the first limiting part is a convex part, the second limiting part is, for example, a convex part or a concave part. When the first limiting part is a concave part, the second limiting part is a convex part limited with the concave part.

[0081] Please refer to Figure 7 In one embodiment, the outer wall of the inner rod 24 is provided with a first guide part 242, and the inner wall of the first through hole is provided with a second guide part (not shown in the figure) axially guided with the first guide part 242. In this way, under the cooperation of the first guide part 242 and the second guide part, the pusher 21 can only move along the axial direction under the drive of the first sleeve 22, and cannot rotate.

[0082] It should be noted that the first guide part 242 includes but is not limited to a rib or a guide groove arranged on the outer wall of the inner rod 24. Correspondingly, the second guide part is a guide groove or a rib arranged on the inner wall of the first through hole. Of course, as some optional solutions, the outer wall of the inner rod 24 can also be shaped, for example, into an oval shape, a polygonal shape, etc. regular shape or irregular shape, wherein the polygonal shape includes a triangular shape, a quadrilateral shape, a pentagonal shape, etc., and the inner wall of the first through hole is shaped into a shape suitable for the shape of the outer wall of the inner rod 24. In this way, the pusher 21 can also be realized to move along the axial direction of the inner rod 24 only, and avoid rotating on the inner rod 24.

[0083] In one specific embodiment, the left and right sides of the outer wall of the inner rod 24 are respectively provided with the first guide part 242, and the middle parts of the upper and lower sides of the outer wall of the inner rod 24 are respectively provided with the first wire outlet groove 241. In this way, the two first wire outlet grooves 241 are staggered with the two first guide parts 242. Of course, the two first wire outlet grooves 241 can also be arranged on the left and right sides of the inner rod 24 or other positions, which can be flexibly adjusted and selected according to actual needs.

[0084] It should be noted that the length of the first wire outlet slot 241 and the length of the second wire outlet slot 213 are not limited herein, and can be flexibly adjusted and set according to actual needs, as long as the overall structural strength of the inner rod 24 and the pusher 21 can be ensured, and the pull wire set 400 can be conveniently assembled. Similarly, the width of the first wire outlet slot 241 and the width of the second wire outlet slot 213 are not limited herein, and can be flexibly adjusted and set according to actual needs, as long as the overall structural strength of the inner rod 24 and the pusher 21 can be ensured, and the pull wire set 400 can be conveniently assembled.

[0085] As an example, the length of the first wire outlet slot 241 is greater than the length of the second wire outlet slot 213, so that the pusher 21 can avoid interference with the pull wire set 400 during axial movement.

[0086] As an example, the second wire outlet slot 213 extends, for example, from the end position of the first thread 212 of the pusher 21 to the proximal end of the pusher 21, so that the pull wire set 400 can pass from the inside of the pusher 21 to the outside through the second wire outlet slot 213.

[0087] Please refer to Figure 1 and Figure 2 In one embodiment, the control handle further comprises a first fixed cap 60 connected to the distal end of the inner rod 24, and an elastic sleeve 70 in communication with the first fixed cap 60. The elastic sleeve 70 and the first fixed cap 60 are both used to be sleeved on the outside of the catheter 40. The knob 23 is located between the distal end of the housing 10 and the first fixed cap 60. In this way, the catheter 40 is sequentially led out from the distal end of the inner rod 24, the first fixed cap 60 and the elastic sleeve 70, and under the action of the elastic sleeve 70, the catheter 40 can be buffered, avoiding damage due to large bending amplitude. In addition, the first fixed cap 60 protects the knob 23 and the housing 10.

[0088] The elastic sleeve 70 includes but is not limited to a rubber sleeve, a plastic sleeve, a resin sleeve, etc. In addition, the elastic sleeve 70 is, for example, fixedly connected to the first fixed cap 60 by clamping. In addition, the fixed connection between the first fixed cap 60 and the inner rod 24 includes but is not limited to threaded connection, clamping connection, adhesion, riveting or other mechanical connection.

[0089] Please refer to Figure 5In one embodiment, the radius of the conduit 40 is defined as R. The connecting part 31 swings between two extreme positions. The swing amplitude of the connecting part 31 between the two extreme positions is the path length of the connecting part 31 swinging from one extreme position to the other extreme position, and the swing amplitude is greater than 0 and less than or equal to 8R. In this way, by limiting the swing amplitude of the connecting part 31, the connecting part 31 is allowed to twist within a certain range, ensuring that the tension generated by the twisting of the conduit 40 under controlled bending can be balanced. This achieves accurate positioning of the distal end of the conduit 40 and prevents adverse consequences caused by excessive twisting of the connecting part 31.

[0090] It should be noted that the swing amplitude of the swinging component 30 can be limited to the required range by adding limiting components to the structure of the pusher 21, the housing 10, the pivot of the swinging component 30, etc., or by flexibly setting their respective sizes and installation positions.

[0091] In one embodiment, the position where the line connecting the center points of the two connecting parts 31 is perpendicular to the central axis of the conduit 40 is defined as the initial position of the connecting part 31 (i.e., for example, as shown in the figure). Figure 2 or Figure 5 The posture shown is, for example, the position between the left and right extreme positions (in other words, the position when the conduit 40 has not yet twisted). The unilateral swing amplitude of the connecting part 31 is the path length of the connecting part 31 from the initial position to one of the extreme positions. The unilateral swing amplitude is greater than 0 and less than or equal to 4R.

[0092] Specifically, the initial position of the connecting part 31 can be set, for example, to the midpoint between two extreme positions, so that the unilateral swing amplitude of the connecting part 31 when swinging from the initial position to either side (left or right) is equal. Of course, the initial position of the connecting part 31 can also deviate from the midpoint between the two extreme positions, that is, the unilateral swing amplitude of the connecting part 31 when swinging from the initial position to different sides is different. It can be flexibly adjusted and set according to actual needs, and no specific limitation is made here.

[0093] In one embodiment, the control handle further includes a limiting member disposed on one side of the swing member 30 and used for abutting and engaging with the swing member 30, or two limiting members disposed on opposite sides of the swing member 30 and used for abutting and engaging with the swing member 30. Thus, when the connecting portion 31 moves from its initial position toward one side, it is abutted and engaged with the limiting member located on one side, thereby controlling the swing amplitude of the connecting portion 31; or, when the connecting portion 31 swings from its initial position toward either side, it can abut and engage with the limiting member disposed on either side of the swing member 30, thereby controlling the swing amplitude of the connecting portion 31.

[0094] Please refer to Figures 4 to 6 In one embodiment, the swing member 30 is provided with a movable opening 34 for the conduit 40 to pass through, and the wall of the movable opening 34 close to the connecting portion 31 is an abutting wall 341. When there is no other component (such as the inner rod 24) between the outer wall of the conduit 40 and the abutting wall 341, the minimum distance between the central axis of the conduit 40 and the abutting wall 341 is defined as S, and the radius of the conduit 40 is defined as R. S and R satisfy the relationship S:R = 3.5-5:1. In this way, when the connecting portion 31 swings towards either side, the abutting wall 341 will abut against the conduit 40 to limit the further swing of the connecting portion 31, so that the connecting portion 31 can swing within a preset swing range.

[0095] Specifically, as shown in Figures 4 to 6 Since the two connecting portions 31 are located at the top and bottom of the swing member 30, i.e. there are two abutting walls 341, the top wall of the movable opening 34 and the bottom wall of the movable opening 34 are respectively the two abutting walls 341.

[0096] Please refer to Figures 4 to 6 In another embodiment, when the inner rod 24 is further sleeved on the outside of the conduit 40, i.e. after the swing member 30 swings, the conduit 40 cannot abut against the abutting wall 341, but the outer wall of the inner rod 24 will abut against the abutting wall 341 to limit the further swing of the connecting portion 31. Specifically, the radius of the inner rod 24 is defined as R', and the minimum distance between the central axis of the conduit 40 and the abutting wall 341 is defined as S. S and R' satisfy the relationship S:R' = 3.5-5:1. In this way, the connecting portion 31 can swing within a preset swing range.

[0097] Please refer to Figure 5 In one embodiment, the relative two sides of the proximal end of the pushing member 21 are provided with two mounting portions 214, and the relative two ends of the swing member 30 are respectively rotationally connected with the two mounting portions 214. When the swing member 30 swings to one of the limit positions, it abuts against the end face of the proximal end of the pushing member 21. In addition, the proximal end of the pushing member 21 is further connected with a cap (which is the same component as the indicating member 50 in the following embodiment), and the swing member 30 is movably arranged in the inside of the cap. When the swing member 30 swings to the other limit position, it abuts against the inner wall of the cap. In this way, the swing member 30 can swing between the two limit positions, preventing the swing range of the swing member 30 from exceeding the standard.

[0098] As some optional solutions, two limiting protrusions are arranged on the pushing member 21, and the two limiting protrusions are respectively located on the relative two sides of the swing member 30, so that the swing member 30 swings within the range defined by the two limiting protrusions.

[0099] Specifically, the swing member 30 is rotatably connected with the mounting portion 214 through a rotation shaft 33, the rotation shaft 33 is perpendicular or substantially perpendicular to the axial direction of the shell 10, and the swing member 30 rotates around the rotation shaft 33 when rotating, and the rotation effect is stable. The rotation shaft 33 includes but is not limited to a pin shaft. As an optional solution, the rotation shaft 33 can be omitted.

[0100] It should be noted that the "mounting portion 214" can be "a part of the push member 21", that is, the "mounting portion 214" is integrally formed with "other parts of the push member 21"; or it can be a separate component that can be separated from "other parts of the push member 21", that is, the "mounting portion 214" can be independently manufactured, and then combined with "other parts of the push member 21" to form a whole.

[0101] In addition, in order to ensure that the two pull wire groups 400 can be conveniently connected with the two connecting portions 31, the two first wire outlet grooves 241 are respectively located on the opposite sides of the rotation shaft 33, and the two second wire outlet grooves 213 are respectively located on the opposite sides of the rotation shaft 33. That is, as shown in the figure, when the rotation shaft 33 is in a horizontal position, one of the first wire outlet grooves 241 and one of the second wire outlet grooves 213 are located on the upper side of the rotation shaft 33, and the other first wire outlet groove 241 and the other second wire outlet groove 213 are located on the lower side of the rotation shaft 33.

[0102] Please refer to Figure 5 and Figure 6 In an embodiment, the swing member 30 includes but is not limited to a frame, and the frame has a regular shape such as a polygon, a circle, an ellipse, and the like, or an irregular shape.

[0103] Please refer to Figure 5 and Figure 6 In an embodiment, the swing member 30 has a rectangular frame structure, and through holes are formed in the left and right sides, and the swing member 30 is connected with the two mounting portions 214 through two pin shafts, of course, riveting or other mechanical connection methods can also be used, as long as the swing member 30 can rotate around the rotation shaft 33 relative to the push member 21.

[0104] Please refer to Figure 1 and Figure 2 In an embodiment, the shell 10 includes a first sub-shell 12 and a second sub-shell 13 which are connected with each other. In this way, after the first sub-shell 12 and the second sub-shell 13 are opened, the drive assembly 20 and the swing member 30 can be conveniently arranged inside the shell 10.

[0105] Specifically, the first sub-shell 12 and the second sub-shell 13 are detachably connected with each other through connecting members including but not limited to buckles, screws, pins, rivets, and the like.

[0106] Please refer to Figure 1 andFigure 2 In one embodiment, the proximal end of the outer shell 10 is further sleeved with a fixing sleeve 80. The outer wall of the fixing sleeve 80 is circumferentially provided with a concave surface 81 for connecting with the bracket. In this way, on the one hand, the fixing sleeve 80 is sleeved on the distal end of the outer shell 10, which can ensure the stable connection of the first shell 12 and the second shell 13; on the other hand, the concave surface 81 can limit the position and support the bracket.

[0107] Referring to Figure 12 , the specific structure of the fixing sleeve 80 of one embodiment is shown. Optionally, the outer wall of the fixing sleeve 80 is provided with an indication mark 82. In this way, the rotation angle information of the outer shell 10 relative to the bracket can be observed according to the indication mark 82. Figure 12

[0108] Optionally, the fixing sleeve 80 is fixed on the distal end of the outer shell 10 in a threaded connection manner, that is, the inner wall of the fixing sleeve 80 is provided with threads, and the outer wall of the distal end of the outer shell 10 is provided with corresponding threads.

[0109] Referring to Figure 1 and Figure 2 In one embodiment, the control handle further includes a second fixing cap 91 sleeved on the proximal end of the outer shell 10. The inner wall of the second fixing cap 91 is provided with a third thread, and the proximal end of the outer shell 10 is provided with a fourth thread corresponding to the third thread. In this way, the second fixing cap 91 is connected with the first shell 12 and the second shell 13 through threaded connection, which can realize the stable connection of the first shell 12 and the second shell 13, and protect the outer shell 10.

[0110] Referring to Figure 1 and Figure 2 In one embodiment, the control handle further includes a venting seat 92 located inside the outer shell 10. One interface of the venting seat 92 is connected with the proximal end of the catheter 40, and the other interface is connected with a venting tube. Optionally, the venting seat 92 and the venting tube can be fixed by gluing, which is used to realize intraoperative venting, and the venting manner is not limited by the embodiment. A one-piece external structure with a stretch luer connector can also be provided on the venting seat 92 to realize venting operation.

[0111] Referring to Figure 5 In one embodiment, a delivery system includes a control handle according to any of the above embodiments. The delivery system further includes a catheter 40 which is arranged in the outer shell 10, and the distal end of the catheter 40 extends to the outside of the outer shell 10.

[0112] The delivery system described above has good bending and torsion stability of the catheter 40, which can realize accurate positioning and greatly improve the success rate of surgery.

[0113] Referring to​Figure 8 , Figure 8 A schematic diagram of a conveying system according to an embodiment of the present invention is shown. In one embodiment, the conveying system further includes an outer tube 200 and a bending control device 300. A conduit 40 is also inserted into the outer tube 200, which is located at the distal end of the outer casing 10. The bending control device 300 is used to bend the outer tube 200. The bending control device 300 can be flexibly configured into various devices capable of bending the outer tube 200 according to actual needs. Specifically, for example, a bending control handle similar in principle to the control handle in this embodiment can be used. This involves setting a drive mechanism and a pull wire assembly 400, with the distal end of the pull wire assembly 400 connected to the distal end of the outer tube 200. The pull wire assembly 400 is also connected to the drive mechanism, which drives the pull wire assembly 400 to move the distal end of the outer tube 200 towards the proximal end, thereby bending the outer tube 200. The specific shape of the bend is as follows: Figure 9 As shown.

[0114] Please see Figures 8 to 11 In one specific embodiment, during operation, firstly, the conduit 40 is connected to the outer shell 10. Two pull-wire assemblies 400 are connected to the distal end of the conduit 40, and these two pull-wire assemblies 400 are respectively connected to two connecting parts 31. Then, since an outer tube 200 is also sleeved outside the conduit 40, and the outer tube 200 completes its first bending with the assistance of the bending control device 300 or under the drive of the control handle, as shown... Figure 9 As shown, after the outer tube 200 completes the first controlled bend, the conduit 40 in this embodiment is pushed through the already bent outer tube 200. At this time, the conduit 40 is passively bent (i.e., the bend shape of the conduit 40 is consistent with the bending angle of the mating outer tube 200, such as...). Figure 9 As shown in the image, it did not begin actively controlling the curve.

[0115] Next, active bending control of catheter 40 begins to achieve a second bending and positioning. Specifically, the drive assembly 20 actuates, causing the pusher 21 to move proximally along the axial direction of the outer shell 10. The swinging member 30 continues to pull the distal end of catheter 40 through two pull wire groups 400, enabling the distal end of catheter 40 to complete the second bending control (completing the positioning of catheter 40 in the atrium ML plane, such as...). Figure 10 (As shown); Furthermore, after the second bending control is completed or simultaneously with the second bending control, the control handle is rotated as a whole in the circumferential direction. The torsional section of the guide tube 40 has a large axial stiffness in the bending control plane. In other words, there will be a large anti-torsional force in the guide tube 40 at this time. The two pull wire groups 400 in the guide tube 40 have two tensions in opposite directions, causing the swing member 30 to deflect around its rotation axis 33. That is, when one of the pull wire groups 400 of the swing member 30 deflects to the distal end, the other pull wire group 400 deflects to the proximal end (as shown). Figure 3 as well as Figure 4As shown), that is, the swing member 30 can rotate around the rotation axis 33 line, and then release the tension in the catheter 40, balance the tension of the pull wire set 400, and then realize the torsion positioning of the distal end of the catheter 40 (complete the positioning of the catheter 40 in the atrial A-P plane, as shown Figure 11 As shown), so it can be seen that the bending and torsion stability of the catheter 40 is good, and accurate positioning can be realized, which greatly improves the success rate of the operation.

[0116] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0117] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

[0118] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0119] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0120] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixing" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0121] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0122] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

Claims

1. A control handle, characterized in that, The control handle includes: A housing for connection to a flexible conduit and for driving the conduit to rotate about its central axis; A swinging component is rotatably connected to the outer casing, the axis of rotation of the swinging component is perpendicular to the axial direction of the outer casing, and the swinging component is provided with two connecting parts located on opposite sides of the axis of rotation; Two pull-wire assemblies, one end of each pull-wire assembly being connected to the distal end of the catheter, and the other ends of each pull-wire assemblies being respectively connected to the two connecting portions; and A drive assembly is connected to the housing. The drive assembly includes a pusher disposed inside the housing and moving along the axial direction of the housing. A swing member is rotatably connected to the pusher. Two mounting portions are provided on opposite sides of the proximal end of the pusher. The opposite ends of the swing member are rotatably connected to the two mounting portions respectively. When the swing member swings to one of its extreme positions, it abuts against the proximal end of the pusher.

2. The control handle according to claim 1, characterized in that, The radius of the catheter is defined as R. The connector swings between two extreme positions. The swing amplitude of the connector between the two extreme positions is the path length of the connector from one extreme position to the other extreme position. The swing amplitude is greater than 0 and less than or equal to 8R.

3. The control handle according to claim 2, characterized in that, The initial position of the connection is defined as the position where the line connecting the center points of the two connection parts is perpendicular to the central axis of the conduit. The unilateral swing amplitude of the connection part is the path length of the connection part from the initial position to one of the extreme positions. The unilateral swing amplitude is greater than 0 and less than or equal to 4R.

4. The control handle according to claim 1, characterized in that, The control handle also includes a limiting member disposed on one side of the swing member and used to abut against the swing member, or two limiting members disposed on opposite sides of the swing member and used to abut against the swing member.

5. The control handle according to claim 1, characterized in that, The swing member is provided with a movable port for inserting the conduit. The wall of the movable port, which is relatively close to the connection part, is an abutment wall. The minimum distance between the central axis of the conduit and the abutment wall is defined as S, and the radius of the conduit is defined as R. S and R satisfy the relationship S:R = 3.5 to 5:

1.

6. The control handle according to claim 1, characterized in that, The two connecting parts are arranged symmetrically about the axis of rotation.

7. The control handle according to claim 1, characterized in that, The control handle also includes a locking element, and the connecting part is provided with a first threading hole and a locking hole; the locking hole and the first threading hole are arranged intersectingly and communicating with each other, and the locking element is installed in the locking hole.

8. The control handle according to claim 7, characterized in that, The connecting part is also provided with a second threading hole; the width of the first threading hole is greater than that of the second threading hole.

9. The control handle according to claim 7, characterized in that, The control handle also includes a protective layer disposed on the outer wall of the pull cable assembly.

10. The control handle according to claim 1, characterized in that, The drive assembly further includes a first sleeve sleeved outside the pusher, a knob connected to the first sleeve, and an inner rod fixedly connected to the housing; the first sleeve is rotatably disposed inside the housing, the outer wall of the pusher is provided with a first thread, and the inner wall of the first sleeve is provided with a second thread that cooperates with the first thread; the pusher is provided with a first through hole and is sleeved outside the inner rod through the first through hole, and the pusher and the inner rod move relative to each other along the axial direction of the housing; the inner rod is provided with a second through hole and is sleeved outside the guide tube through the second through hole.

11. The control handle according to claim 10, characterized in that, The inner rod has two opposite side walls that are provided with a first wire outlet groove that communicates with the second through hole and is arranged axially. The pusher has two opposite side walls that are provided with a second wire outlet groove that communicates with the first through hole and is arranged axially. The two second wire outlet grooves are respectively arranged opposite to the two first wire outlet grooves.

12. The control handle according to claim 10, characterized in that, The first sleeve is provided with a first limiting part, and the outer shell is provided with a second limiting part that axially limits and cooperates with the first limiting part.

13. The control handle according to claim 10, characterized in that, The outer wall of the inner rod is provided with a first guide portion, and the inner wall of the first through hole is provided with a second guide portion that axially guides and cooperates with the first guide portion.

14. The control handle according to claim 10, characterized in that, The control handle also includes a first fixing cap connected to the distal end of the inner rod, and an elastic sleeve communicating with the first fixing cap; both the elastic sleeve and the first fixing cap are used to be fitted onto the outside of the conduit.

15. The control handle according to claim 1, characterized in that, A cap is also connected to the proximal end of the pusher, and the swinging member is movably disposed inside the cap. When the swinging member swings to another extreme position, it abuts against the cap.

16. The control handle according to claim 1, characterized in that, The outer casing is made of transparent or semi-transparent material, and the pusher is also provided with an indicator; or, the outer casing is provided with a viewing window, and the pusher is also provided with an indicator corresponding to the viewing window.

17. The control handle according to claim 1, characterized in that, The outer shell comprises a first sub-shell and a second sub-shell that are spliced ​​together with each other; And / or, a fixing sleeve is also fitted around the proximal end of the housing, and a concave surface is provided around the outer wall of the fixing sleeve for connecting with the bracket, and a mark is provided on the outer wall of the fixing sleeve; And / or, the housing is used to connect to the proximal end of the catheter; And / or, the control handle further includes a second fixing cap sleeved on the proximal end of the housing; the inner wall of the second fixing cap is provided with a third thread, and the outer wall of the proximal end of the housing is provided with a fourth thread adapted to the third thread.

18. A conveying system, characterized in that, The delivery system includes a control handle as described in any one of claims 1 to 17, and the delivery system further includes a conduit passing through the housing, the distal end of the conduit extending to the outside of the housing.

19. The conveying system according to claim 18, characterized in that, The delivery system also includes an outer tube and a bending control device. The conduit is also inserted in the outer tube, which is located at the distal end of the outer shell. The bending control device is used to bend the outer tube.

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