Driving and control handle and calculus-extracting mesh basket

Abstract

The present application relates to the technical field of surgical medical instruments and particularly to a driving and control handle and a calculus-extracting mesh basket. The driving and control handle comprises an outer tube, an inner tube, a connector, and a rotary knob. The outer tube is provided with a limiting groove, and the inner tube comprises a fixed part and a sliding part. The sliding part is connected to the connector and provided with a first limiting piece. A sliding cavity is formed in the near end of the sliding part, and a mounting channel is formed in the fixed part. The fixed part comprises a sliding stage located at the far end, and a sliding stroke is formed between the sliding stage and the sliding cavity in an axial direction. The sliding part of the present application, as a part of the inner tube, is arranged in the outer tube and protected by the outer tube, reducing the exposed area of a reciprocating action gap, further reducing or eliminating the risk of clamping the palm and the probability of a foreign object falling into the reciprocating action gap, and improving the operational stability and convenience of the driving and control handle and the calculus-extracting mesh basket. Moreover, the outer tube and the fixed part can provide a fixed holding support part, further improving the comfort and convenience when an operator performs a holding action.

Description

Drive handle and stone extraction basket TECHNICAL FIELD

[0001] The present application relates to the technical field of surgical medical instruments, in particular to a drive handle and a stone extraction basket. BACKGROUND

[0002] Urinary calculi is a common disease of the urinary system, which can be found in any part of the kidney, bladder, ureter and urethra, among which kidney and ureteral calculi are common. The stone extraction basket is one of the commonly used medical instruments for treating ureteral calculi, which includes a handle and a basket. The operator can drive the basket to perform a stone extraction action by operating the handle. However, the applicant found that the existing stone extraction basket has poor operation convenience when driving the handle. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide a drive handle and a stone extraction basket to solve the above technical problems in the prior art, mainly including the following two aspects:

[0004] The first aspect of the present application provides a drive handle for a stone extraction basket, which comprises an outer tube, an inner tube, a connecting head and a knob. A limiting groove is arranged on the circumferential wall of the outer tube in a first radial direction. The inner tube comprises a fixed part and a sliding part. The distal end of the sliding part is connected to the proximal end of the connecting head. A first limiting piece is arranged on the circumferential wall of the sliding part and located in the limiting groove. The first limiting piece at least partially protrudes from the limiting groove. A sliding cavity is arranged at the proximal end of the sliding part. An installation channel is arranged in the fixed part. The installation channel is used for threading a traction wire. The fixed part comprises a sliding table at the distal end. The installation channel penetrates the sliding table. The sliding table and the sliding cavity have a sliding stroke in the axial direction. The proximal end of the fixed part is connected to the knob. The knob is used for fixing the traction wire threaded in the inner tube. The distal end of the connecting head is used for connecting with a sheath tube.

[0005] Further, the sliding cavity is arranged on the proximal end surface of the sliding part. The sliding cavity penetrates the sliding part in a second radial direction. The second radial direction is opposite to the first radial direction.

[0006] Further, the inner wall cross section of the sliding cavity comprises a first arc segment and two first straight segments symmetrically arranged on both sides of the first arc segment. The outer wall cross section of the sliding table comprises a second arc segment and two second straight segments symmetrically arranged on both sides of the second arc segment. The second arc segment is correspondingly arranged with the first arc segment.

[0007] Further, the radius of the second arc segment is smaller than the radius of the first arc segment.

[0008] Further, the first arc segment corresponds to a protruding strip arranged on the inner wall of the sliding cavity in the axial direction. The protruding strip is used for abutting and cooperating with the second arc segment.

[0009] Further, the sliding table is provided with a first positioning block in the first radial direction, and the first arc segment corresponds to a first positioning groove provided on the inner wall of the sliding cavity and matched with the first positioning block.

[0010] Further, the sliding table is provided with a second positioning block in the second radial direction, and the outer tube is provided with a second positioning groove on the inner wall and matched with the second positioning block.

[0011] Further, the knob is further used for cooperating with the connecting head and the fixed part to realize the limiting constraint of the outer tube.

[0012] And / or, the proximal end of the fixed part is provided with a second limiting piece in the first radial direction, and the second limiting piece is located in the limiting groove.

[0013] And / or, the peripheral wall of the outer tube is provided with a holding part.

[0014] Further, the installation channel is provided with a reinforcing inner tube, and the reinforcing inner tube is used for sleeving the proximal end of the traction wire.

[0015] And / or, the installation channel is provided with a protective sleeve, and the protective sleeve is used for sleeving the proximal end of the traction wire to reduce the activity space of the traction wire in the installation channel.

[0016] The second aspect of the present application provides a stone extraction basket, which comprises a basket and the above-mentioned control handle, the basket is connected with the distal end of the traction wire, the proximal end of the traction wire passes through the connecting head and the installation channel, and the proximal end of the traction wire is connected with the proximal end of the fixed part.

[0017] The present application has at least the following technical effects relative to the prior art:

[0018] The sliding part of the present application is part of the inner tube in the outer tube, which is protected by the outer tube, reduces the exposed area of the reciprocating gap, and further reduces or avoids the risk of clamping the palm and the probability of foreign objects falling into the reciprocating gap, thereby improving the working stability and convenience of the control handle and the stone extraction basket. At the same time, the outer tube and the fixed part can provide a fixed holding support part, further improving the comfort and convenience of the operator's holding operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating any creative labor.

[0020] Figure 1 is a structural diagram of the stone extraction basket of the present application (basket retracted);

[0021] Figure 2 is an exploded view of the stone extraction basket of the present application (basket retracted);

[0022] Figure 3 is a structural diagram of the inside of the control handle of the present application (basket extended);

[0023] Figure 4 is an exploded view of the inside of the control handle of the present application (basket extended);

[0024] Figure 5 is a structural diagram of the outer tube of the present application;

[0025] Figure 6 is a structural diagram of the fixed portion of the present application;

[0026] Figure 7 is a structural diagram of the sliding portion of the present application;

[0027] Figure 8 is a structural diagram of the connection between the outer tube and the inner tube of the present application;

[0028] Figure 9 is a cross-sectional view of Figure 8 along the A-A direction;

[0029] In the figures,

[0030] 10, outer tube; 110, limiting groove; 120, second positioning groove; 210, fixed portion; 211, sliding platform; 212, first positioning block; 213, second positioning block; 214, second limiting member; 215, installation channel; 220, sliding portion; 221, sliding cavity; 222, first limiting member; 223, first positioning groove; 30, connection head; 40, knob; 50, sheath; 60, basket; 70, pull wire; 80, reinforced inner tube; 90, protective sleeve. DETAILED DESCRIPTION

[0031] The following description provides many different embodiments, or examples, for implementing different features of the application. Specific examples are described in the following detail so as to provide a thorough understanding of the application. The description and drawings are not intended to limit the application to the described examples, but serve to provide examples to help explain the application.

[0032] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0033] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "attach", and the like, should be construed as being used in a broad sense and, for example, can be fixed connection, detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements, or interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first", "second", and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0034] In the present application, unless specifically defined and limited otherwise, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and 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, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In addition, in the present application, "proximal end" and "distal end" are the relative positions of the structure in the use environment with respect to the human body operation, in order to facilitate the description of the positional relationship between the components and facilitate understanding; for the same component, "proximal end" and "distal end" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the angle of realizing the principle of the present application, and cannot deviate from the essence of the present application.

[0036] Urinary calculi is a common disease of urinary system, which can be seen in any part of kidney, bladder, ureter and urethra, among which kidney and ureter calculi are common. The stone extraction basket is one of the commonly used medical devices for treating ureteral calculi, which includes a handle and a basket. The operator can control the handle to drive the basket to perform the action of grabbing the stone. For the existing stone extraction basket, such as the stone extraction basket device disclosed in Chinese Patent Publication No. CN219814233U, which includes a handle and a Y-shaped connecting piece, the gap between the handle and the Y-shaped connecting piece changes with the reciprocating driving of the basket. On the one hand, since the general operator operates with one hand, the changing gap between the handle and the Y-shaped connecting piece may pinch the palm, affecting the operator's control of the stone extraction basket device. On the other hand, when foreign matter falls into the gap between the handle and the Y-shaped connecting piece, the convenience of reciprocating driving the basket is destroyed, resulting in poor control convenience of the stone extraction basket device. To solve the problem of poor control convenience of the stone extraction basket device, the present application provides a driving control handle and a stone extraction basket for improving the operation convenience of the stone extraction basket device, and the specific structure is as follows. Embodiment 1:

[0037] The embodiment of the present application provides a driving control handle for a stone extraction basket, as shown in FIGS. 1-4, which includes an outer tube 10, an inner tube, a connecting head 30 and a knob 40; as shown in FIG. 5, a limiting groove 110 is provided on the circumferential wall of the outer tube 10 in the first radial direction, the inner tube includes a fixed part 210 and a sliding part 220, the distal end of the sliding part 220 is connected with the proximal end of the connecting head 30; as shown in FIG. 7, a first limiting piece 222 is provided on the circumferential wall of the sliding part 220 and located in the limiting groove 110, the first limiting piece 222 at least partially protrudes from the limiting groove 110, and the proximal end of the sliding part 220 is provided with a sliding cavity 221; as shown in FIG. 6, an installation channel 215 is provided in the fixed part 210, the installation channel 215 is used for penetrating a traction wire 70, the fixed part 210 includes a sliding table 211 at the distal end, the installation channel 215 penetrates the sliding table 211, the sliding table 211 and the sliding cavity 221 have a sliding stroke in the axial direction, the proximal end of the fixed part 210 is connected with the knob 40, the knob 40 is used for fixing the traction wire 70 penetrating the inner tube, and the distal end of the connecting head 30 is used for connecting with a sheath 50.

[0038] In use, the first limit member 222 is pushed distally to drive the sliding part 220 to move away from the fixed part 210, the sheath tube 50 is driven by the connecting head 30 to move distally, the traction wire 70 is fixed relative to the outer tube 10, correspondingly, the traction wire 70 moves proximally relative to the sheath tube 50, and the basket 60 is retracted into the sheath tube, as shown in FIGS. 1 and 2; if the first limit member 222 is pushed proximally to drive the sliding part 220 to move towards the fixed part 210, the sheath tube 50 is driven by the connecting head 30 to move proximally, the traction wire 70 is fixed relative to the outer tube 10, correspondingly, the traction wire 70 moves distally relative to the sheath tube 50, and the basket 60 extends out of the sheath tube 50, as shown in FIGS. 3 and 4, the basket 60 after extending out of the sheath tube 50 can capture the stone, and reciprocating driving the first limit member 222 can make the basket 60 repeatedly capture the stone, so as to stably capture the stone; during reciprocating driving of the basket 60, the fixed part 210 and the outer tube 10 are fixed relative to the traction wire, and the sliding part 220 slides relative to the traction wire 70, the sliding part 220 is arranged in the outer tube 10 as part of the inner tube, and the gap generated during reciprocating driving of the sliding part 220 is protected by the outer tube 10, the exposed area of the reciprocating gap is reduced, the risk of clamping the palm and the probability of foreign matter falling into the reciprocating gap are reduced or avoided, and the working stability and convenience of the control handle and the stone basket are improved; on the other hand, for the operator, when holding the control handle, the palm after holding faces distally, the thumb is placed on the first limit member 222 along the first radial protruding limit groove 110, correspondingly, when reciprocating driving the first limit member 222, the first limit member 222 will not rub with the palm (except the thumb part), and the outer tube 10 and the fixed part 210 can provide fixed holding support parts for the little finger, the ring finger, the middle finger, the index finger and the palm, further improving the comfort and convenience of the operator holding operation.

[0039] It should be noted that the sliding connection between the sliding part 220 and the sliding table 211 is prior art, which can be gap fit, track fit, roller fit and the like, and is not limited here.

[0040] In order to facilitate the quick assembly of the control handle, as shown in FIG. 7, the sliding cavity 221 can be arranged on the proximal end surface of the sliding part 220, and the sliding cavity 221 penetrates the sliding part 220 along the second radial direction opposite to the first radial direction. During installation, the sliding table 211 of the fixed part 210 can be directly installed into the sliding cavity 221 of the sliding part 220 along the second radial direction to form an inner tube, and then the inner tube is installed into the outer tube 10 through the port of the outer tube 10. The outer tube 10 is used to limit and constrain the inner tube to prevent the inner tube from falling off the outer tube 10 along the radial direction. At the same time, based on the cooperation between the first limiting part 222 and the inner wall of the limiting groove 110, the circumferential rotation stroke of the sliding part 220 relative to the outer tube 10 can be limited, and the relative position between the fixed part 210, the sliding part 220 and the outer tube 10 is fixed by the cooperation between the sliding stroke of the sliding table 211 and the sliding cavity 221, thereby improving the structural stability of the device.

[0041] In order to improve the connection and cooperation stability between the fixed part 210 and the sliding part 220, as shown in FIG. 8 and FIG. 9, the inner wall section of the sliding cavity 221 can include a first arc segment and two first straight line segments symmetrically arranged on both sides of the first arc segment, and the outer wall section of the sliding table 211 can include a second arc segment and two second straight line segments symmetrically arranged on both sides of the second arc segment, and the second arc segment is correspondingly arranged with the first arc segment. By correspondingly arranging the first straight line segments and the second straight line segments, and correspondingly arranging the first arc segment and the second arc segment, the mutual limiting and constraining between the sliding cavity 221 and the sliding table 211 is realized, so as to ensure that the sliding part 220 stably slides along the axial direction of the sliding table 211 under the action of the thrust force, and avoid the collision noise between the sliding part 220 and the fixed part 210 due to the loose structure during use.

[0042] In order to reduce the sliding resistance of the sliding part 220, the radius of the second arc segment can be smaller than the radius of the first arc segment. After the fixed part 210 and the sliding part 220 are installed, when the corresponding arc of the second arc segment and the first arc segment is the same, and the radius of the second arc segment is smaller than the radius of the first arc segment, the first arc segment of the inner wall of the sliding cavity 221 and the sliding first arc segment are partially contacted when the sliding part 220 is pushed, and in this state, a certain gap is maintained between the first straight line segment and the corresponding second straight line segment, thereby effectively reducing the contact area between the sliding part 220 and the sliding table 211. Correspondingly, the frictional resistance of the sliding part 220 to the sliding table 211 during reciprocating movement is correspondingly reduced, thereby effectively improving the sliding convenience and the control comfort of the control handle.

[0043] To reduce the sliding resistance of the sliding part 220, a convex strip can be arranged on the inner wall of the sliding cavity 221 corresponding to the first arc segment in the axial direction, which is used to abut with the second arc segment. When the sliding part 220 is pushed, the convex strip on the inner wall of the sliding cavity 221 abuts with the second arc segment on the sliding platform 211, thereby reducing the contact area between the sliding part 220 and the sliding platform 211. Correspondingly, the frictional resistance of the sliding part 220 to the sliding platform 211 during the reciprocating movement is reduced, thereby effectively improving the sliding convenience and the operation comfort of the control handle.

[0044] To improve the connection stability between the sliding part 220 and the sliding platform 211, as shown in FIGS. 2, 4 and 6, a first positioning block 212 in the first radial direction can be arranged on the sliding platform 211, and a first positioning groove 223 matched with the first positioning block 212 is arranged on the inner wall of the sliding cavity 221 corresponding to the first arc segment. The cooperation between the first positioning block 212 and the first positioning groove 223 can be used to limit the axial sliding stroke between the sliding part 220 and the fixed part 210, and can also constrain the rotation of the sliding part 220 relative to the fixed part in the circumferential direction. When the fixed part 210 and the sliding part 220 are assembled into the outer tube 10 and connected with the connecting head 30, the cooperation between the first positioning block 212 and the first positioning groove 223 can prevent the fixed part 210 from sliding axially out of the outer tube 10, thereby improving the installation and connection convenience of the fixed part 210 and the knob 40.

[0045] Preferably, the sliding stroke of the sliding part 220 on the sliding platform 211 is limited by the sliding stroke of the first positioning block 212 in the first positioning groove 223.

[0046] To improve the disassembly convenience of the control handle, as shown in FIGS. 2, 4 and 6, a second positioning block 213 in the second radial direction can be arranged on the sliding platform 211, and a second positioning groove 120 matched with the second positioning block 213 is arranged on the inner wall of the outer tube 10. The cooperation between the second positioning block 213 and the second positioning groove 120 can limit and constrain the sliding stroke of the fixed part 210 relative to the outer tube 10. After the knob 40 is removed, the cooperation between the second positioning block 213 and the second positioning groove 120 can effectively constrain the axial sliding stroke of the fixed part 210 in the outer tube 10, so that the relative positions between the outer tube 10, the inner tube and the traction wire 70 are fixed, thereby facilitating the maintenance and adjustment of the position of the traction wire 70 and other functional components.

[0047] To improve the structural stability of the control handle, the knob 40 can also be used to cooperate with the connecting head 30 and the fixed part 210 to limit and constrain the outer tube 10.

[0048] To prevent the fixed part 210 from rotating relative to the outer tube 10, a second limiting piece 214 can be arranged on the proximal end of the fixed part 210 in the first radial direction, and the second limiting piece 214 is located in the limiting groove 110. The second limiting piece 214 and the inner wall of the limiting groove 110 cooperate to constrain the rotation range of the fixed part 210 relative to the outer tube 10, thereby improving the structural stability between the fixed part 210 and the outer tube 10. In some embodiments, the outer wall surface of the second limiting piece 214 and the peripheral wall of the outer tube 10 can be on the same circumferential surface, thereby improving the holding comfort.

[0049] To improve the convenience of operation, a holding part can be arranged on the peripheral wall of the outer tube 10.

[0050] To improve the mechanical strength of the corresponding part of the traction wire 70, as shown in FIG. 4, a reinforcing inner tube 80 can be arranged in the mounting channel 215, and the reinforcing inner tube 80 is used to be sleeved on the proximal end of the traction wire 70. By sleeving the reinforcing inner tube 80 on the traction wire 70, the mechanical strength of the traction wire 70 is improved, and the corresponding part of the traction wire 70 is prevented from being damaged by bending during the reciprocating driving process, thereby improving the structural stability and use safety.

[0051] To further prevent the corresponding part of the traction wire from being damaged by bending during the reciprocating driving process, as shown in FIGS. 2 and 4, a protective sleeve 90 can be arranged in the mounting channel 215, and the protective sleeve 90 is used to be sleeved on the proximal end of the traction wire 70. Preferably, the reinforcing inner tube 80 is located between the protective sleeve 90, so as to reduce the activity space of the traction wire 70 in the mounting channel 215 and reduce the risk of the traction wire 70 being damaged by bending during the reciprocating driving process. Embodiment 2:

[0052] The embodiment of the application provides a stone extraction basket, as shown in FIGS. 1-4, which comprises a basket 60 and the control handle in embodiment 1. The traction wire 70 passes through the sheath 50 and is connected with the basket 60. The proximal end of the traction wire 70 passes through the connecting head 30 and the mounting channel 215, and the proximal end of the traction wire 70 is connected with the proximal end of the fixed part 210 through the knob 40.

[0053] When the stone treatment needs to be performed by using the stone extraction basket, the operator can push the first limiting member 222 to the distal end, drive the sliding part 220 to move away from the fixed part 210, the sliding part 220 drives the sheath tube 50 to move to the distal end through the connecting head 30, the traction wire 70 is relatively fixed with the outer tube 10, correspondingly, the traction wire 70 moves to the distal end relative to the sheath tube 50, and the basket 60 is retracted into the sheath tube; if the operator pushes the first limiting member 222 to the proximal end, drives the sliding part 220 to move close to the fixed part 210, the sliding part 220 drives the sheath tube 50 to move to the proximal end through the connecting head 30, the traction wire 70 is relatively fixed with the outer tube 10, correspondingly, the traction wire 70 moves to the distal end relative to the sheath tube 50, and the basket 60 extends out of the sheath tube 50, the basket 60 after extending out of the sheath tube 50 can be used for extracting the stone, and reciprocating driving the first limiting member 222 can make the basket 60 repeatedly extract the stone, so as to stably capture the stone.

[0054] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drive handle for a lithotripsy basket, comprising: The device comprises an outer tube (10), an inner tube, a connector (30) and a knob (40), a limiting groove (110) is arranged on the peripheral wall of the outer tube (10) in a first radial direction, the inner tube comprises a fixed part (210) and a sliding part (220), the distal end of the sliding part (220) is connected with the proximal end of the connector (30), a first limiting piece (222) is arranged on the peripheral wall of the sliding part (220) and located in the limiting groove (110), the first limiting piece (222) at least partially protrudes from the limiting groove (110), a sliding cavity (221) is arranged on the proximal end of the sliding part (220), an installation channel (215) is arranged in the fixed part (210), the installation channel (215) is used for penetrating a traction wire (70), the fixed part (210) comprises a sliding table (211) located at the distal end, the installation channel (215) penetrates the sliding table (211), the sliding table (211) and the sliding cavity (221) have a sliding stroke in the axial direction, the proximal end of the fixed part (210) is connected with the knob (40), the knob (40) is used for fixing the traction wire (70) penetrating the inner tube, and the distal end of the connector (30) is used for being connected with a sheath tube (50).

2. The actuation handle of claim 1, wherein, The sliding cavity (221) is arranged on the proximal end face of the sliding part (220) and penetrates the sliding part (220) in a second radial direction, the second radial direction is opposite to the first radial direction.

3. The actuation handle of claim 2, wherein, The inner wall section of the sliding cavity (221) comprises a first arc segment and two first straight line segments symmetrically arranged on both sides of the first arc segment, the outer wall section of the sliding table (211) comprises a second arc segment and two second straight line segments symmetrically arranged on both sides of the second arc segment, and the second arc segment is correspondingly arranged with the first arc segment.

4. The actuation handle of claim 3, wherein, The radius of the second arc segment is smaller than the radius of the first arc segment.

5. The actuation handle of claim 4, wherein the actuation handle is configured to be actuated by a user's thumb. The first arc segment is correspondingly provided with a convex strip on the inner wall of the sliding cavity (221) in the axial direction, and the convex strip is used for abutting and matching with the second arc segment.

6. The actuation handle of claim 4, wherein, The sliding table (211) is provided with a first positioning block (212) located in the first radial direction, and the first arc segment is correspondingly provided with a first positioning groove (223) matched with the first positioning block (212) on the inner wall of the sliding cavity (221).

7. An actuation handle according to any one of claims 2 to 6, wherein, The sliding table (211) is provided with a second positioning block (213) located in the second radial direction, and the inner wall of the outer tube (10) is provided with a second positioning groove (120) matched with the second positioning block (213).

8. The actuation handle of claim 7, wherein, The knob (40) is further used for cooperating with the connector (30) and the fixed part (210) to realize the limiting constraint of the outer tube (10); The proximal end of the fixed part (210) is provided with a second limiting piece (214) in the first radial direction, and the second limiting piece (214) is located in the limiting groove (110); The peripheral wall of the outer tube (10) is provided with a holding part.

9. The actuation handle of claim 7, wherein, A reinforcing inner tube (80) is arranged in the installation channel (215), and the reinforcing inner tube (80) is used for sleeving the proximal end of the traction wire (70). And / or, a protective sleeve (90) is arranged in the installation channel (215), which is used to cover the proximal end of the traction wire (70) to reduce the activity space of the traction wire (70) in the installation channel (215).

10. A stone retrieval basket characterized by, The control handle comprises a basket (60) and the control handle according to any one of claims 1-9, the basket (60) is connected with the distal end of the traction wire (70), the proximal end of the traction wire (70) passes through the connector (30) and the installation channel (215), and the proximal end of the traction wire (70) is connected with the proximal end of the fixed part (210).

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