Catheter handle and bending control device

Abstract

The utility model provides a catheter handle and bending control equipment, the catheter handle is used for controlling the bending direction of an intervention catheter, the catheter handle comprises an operation transmission part, the operation transmission part comprises a transmission support and at least one moving device, and the moving device comprises two moving modules and a transmission pull rope. The interventional catheter can be fixed to the transmission support and extends in the direction away from the transmission support, the two moving modules are arranged on the transmission support and used for being connected with a first pull wire and a second pull wire in the interventional catheter respectively, the transmission pull rope is arranged on the transmission support in a surrounding mode, and the two moving modules are oppositely fixed to the transmission pull rope. One moving module can move on the transmission support under the action of external force, and the other moving module is driven to move reversely through the transmission pull rope in the moving process. By means of the arrangement, the interventional catheter can achieve precise targeted therapy in the body through tortuous blood vessels, and controllability of the far end of the interventional catheter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a catheter handle and a bending control device. Background Art

[0002] Among interventional surgeries, microcatheter intervention is a sub-field with high technical requirements and entry barriers. For example, chronic total coronary occlusion (CTO) refers to the complete occlusion of the original coronary artery. As an essential tool for treating CTO lesions, microcatheters often require the use of guidewires to improve the maneuverability of microcatheters, as well as the support and passability of microcatheters.

[0003] However, when passing through complex coronary lesions such as bifurcation lesions, the maneuverability of the microcatheter is obviously insufficient and cannot provide accurate tracking. In addition, as microcatheters are increasingly used in aneurysm interventional surgery, microcatheters are used as auxiliary tools to inject media such as coils, embolic particles and embolic microspheres into blood vessels, which need to pass through tortuous blood vessels to achieve precise targeted treatment. Therefore, the requirements for the maneuverability of the distal end of the microcatheter are becoming increasingly higher. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect that the manipulability of the distal end of the microcatheter in the prior art cannot well meet the use requirements, and to provide a catheter handle and a bending control device.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A catheter handle for controlling the bending direction of an interventional catheter, characterized in that the catheter handle comprises an operating transmission part, the operating transmission part comprises a transmission bracket and at least one moving device, the interventional catheter can be fixed on the transmission bracket and extend in a direction away from the transmission bracket, and the moving device comprises:

[0007] Two moving modules, both of which are arranged on the transmission bracket and are used to connect the first pull wire and the second pull wire inside the interventional catheter respectively;

[0008] A transmission rope is arranged around the transmission bracket, and the two mobile modules are relatively fixed on the transmission rope. One of the mobile modules can move on the transmission bracket under the action of external force, and during the movement, the other mobile module is driven by the transmission rope to move in the opposite direction.

[0009] In the present solution, through this arrangement, the interventional catheter is fixed by a transmission bracket, and the extended end of the interventional catheter can enter the patient's body by moving the transmission bracket; at the same time, the two moving modules of the moving device are respectively connected to the first pull wire and the second pull wire inside the interventional catheter, and the two moving modules are relatively fixed on the transmission pull rope at the same time, and the two moving modules are synchronously moved in opposite directions by the transmission pull rope, so that the first pull wire and the second pull wire can be in a state where one is pulled and the other is relaxed, and the end of the interventional catheter corresponding to the pulled pull wire will be bent, so that the interventional catheter can achieve precise targeted treatment through tortuous blood vessels inside the body, thereby improving the manipulability of the distal end of the interventional catheter; at the same time, the two moving modules are driven to move synchronously by the transmission pull rope, so that the interventional catheter can respond faster to the bending control, and the bending shape and angle control of the end of the interventional catheter can be more precise, and by setting at least one moving device, multiple pairs of first pull wires and second pull wires inside the interventional catheter can be controlled, thereby expanding the bending direction of the interventional catheter, and further expanding the scope of application of the catheter handle.

[0010] Furthermore, one of the moving modules can move on the transmission bracket along the extension direction of the interventional catheter under the action of external force.

[0011] In this solution, by setting the moving direction of the movable module to be consistent with the extension direction of the interventional catheter, it is more convenient to use the movable module to pull or loosen the first pull wire and the second pull wire inside the interventional catheter, which is more labor-saving and the bending of the end of the interventional catheter is also smoother.

[0012] Furthermore, along the extension direction of the interventional catheter, a sliding groove is provided inside the transmission bracket, and two communication holes are respectively provided on the end surfaces at both ends of the transmission bracket corresponding to the sliding groove;

[0013] The transmission rope is wound around the connecting hole on the two end surfaces of the transmission bracket, and two straight extension parts are formed between the two end surfaces of the transmission bracket. The two moving modules are respectively fixed relatively to the two straight extension parts.

[0014] In the present solution, by arranging a sliding groove inside the transmission bracket, it is more convenient to open connecting holes on the end faces of the transmission bracket corresponding to the sliding groove in the extension direction of the interventional catheter, so that the transmission rope can be passed through these connecting holes in sequence, and two straight extension parts are formed inside the sliding groove. When the two mobile modules are relatively fixed on the two straight extension parts respectively, it is more convenient to use the transmission rope to realize the movement of the two mobile modules in opposite directions, so that the whole structure of the catheter handle is more compact and more convenient to operate. At the same time, it is ensured that the two mobile modules will not be separated from the transmission bracket, thereby improving the reliability of the catheter handle in controlling the interventional catheter.

[0015] Furthermore, along the extension direction of the interventional catheter, the transmission bracket is provided with a sliding portion on the outer side of the end faces at both ends thereof, and the sliding portion is located between the two connecting holes on the corresponding end faces of the transmission bracket, and the transmission rope is slidably connected to the corresponding sliding portion at the portion located on the outer side of the corresponding end faces of the transmission bracket.

[0016] In the present solution, through this arrangement, when the transmission rope is passed through the connecting holes in sequence, it can be slidably connected to the corresponding sliding part on the outer side of the end faces of both ends of the transmission bracket. At this time, when one of the mobile modules moves under the action of external force, it can more conveniently and smoothly drive the transmission rope to move, and at the same time, it can also more conveniently and smoothly drive the other mobile module to move.

[0017] Furthermore, the two movable modules are respectively a first movable module and a second movable module, the first movable module includes a first slider, the second movable module includes a second slider, the first slider is mounted on the edge of the sliding groove in the vertical direction, the second slider is arranged inside the sliding groove, and is staggered with the interventional catheter fixed on the transmission bracket.

[0018] In the present solution, through this arrangement, the first slider is mounted on the edge of the sliding groove in the vertical direction, and the portion of the first slider located outside the sliding groove can be used to bear the external force, so that the first slider can slide on the edge of the sliding groove, while the second slider does not need to be used to bear the external force, so it can be arranged inside the sliding groove and staggered with the interventional catheter fixed on the transmission bracket, so that the overall structure of the catheter handle is more compact and the operator's hand-held operation is more convenient.

[0019] Furthermore, the first moving module also includes a first adsorption bracket and a second adsorption bracket. Along the extension direction of the interventional catheter, the first adsorption bracket and the second adsorption bracket are respectively magnetically attracted to both sides of the first slider, one end of the transmission pull rope passes through the first adsorption bracket and is fixed on the first slider, and the other end of the transmission pull rope is fixed on the second adsorption bracket. The first moving module is connected to the first pull wire inside the interventional catheter through the first adsorption bracket, and the second moving module is connected to the second pull wire inside the interventional catheter through the second slider.

[0020] In the present scheme, through this setting, under normal circumstances, the first adsorption bracket and the second adsorption bracket are magnetically attracted to the two sides of the first slider respectively, and the first slider is used to drive the first adsorption bracket and the second adsorption bracket to move, so as to normally pull the first pull wire or the second pull wire to change the bending direction of the interventional catheter; if the first slider drives the first adsorption bracket to move a distance that is too large, causing the first pull wire to be pulled excessively, the first pull wire will react on the first adsorption bracket, so that the first adsorption bracket is separated from the first slider. Similarly, if the first slider drives the second adsorption bracket to move a distance that is too large, causing the second slider to drive the second pull wire to be pulled excessively, the second pull wire reacts on the second slider and further acts on the second adsorption bracket, so that the second adsorption bracket is separated from the first slider. Through the above-mentioned setting, when the bending control of the catheter end is performed, excessive operation is avoided, causing the distal end of the catheter to excessively contact the blood vessel wall, causing vascular spasm, and at the same time, excessive pulling force on the pull wire is also avoided to damage the catheter, thereby improving the operability and safety performance of the catheter handle.

[0021] Furthermore, the first adsorption bracket is provided with a first magnet, the second adsorption bracket is provided with a second magnet, the material of the first slider is a magnetic material, and the first adsorption bracket and the second adsorption are magnetically attracted to both sides of the first slider through the first magnet and the second magnet respectively.

[0022] In this solution, by respectively providing the first magnet and the second magnet on the first adsorption bracket and the second adsorption bracket, the first magnet and the second magnet are respectively magnetically attracted to the first slider, so that the first adsorption bracket and the second adsorption bracket can be more conveniently separated from the first slider by force, further improving the convenience of operating the catheter handle.

[0023] Furthermore, the operation transmission part also includes a sliding rod, which is arranged inside the sliding groove along the extension direction of the interventional catheter, and the two ends of the sliding rod are respectively fixed on the two end faces of the transmission bracket, and the second sliding block is passed through the sliding rod and can move relative to the sliding rod.

[0024] In the present solution, through this arrangement, the second slider can be inserted into the sliding groove and move on the sliding rod, so as to further limit the movement trajectory of the second slider, and ensure that the movement of the second slider will not shake or even detach from the transmission bracket, thereby further improving the reliability of the catheter handle in controlling the interventional catheter.

[0025] Furthermore, the catheter handle further comprises a bending control button, which is arranged on the first sliding block in the vertical direction, and the top of the bending control button has a pressing surface that bears external force;

[0026] And / or, the catheter handle also includes a catheter support frame, which is penetrated and fixed on the two end faces of the transmission bracket along the extension direction of the interventional catheter, and is located below the first slider in the vertical direction. A through hole is opened on the catheter support frame along its radial direction, and the interventional catheter is fixed to the transmission bracket through the catheter support frame. The first pull wire and the second pull wire in the interventional catheter are penetrated through the through hole and are respectively connected to the first slider and the second slider.

[0027] In the present solution, a bending control button is further provided above the first slider, and the pressing surface on the top of the bending control button is used to bear the external force, so that the first slider can be moved more conveniently on the edge of the sliding groove, and the user can directly act on the pressing surface of the bending control button to realize the bending control of the interventional catheter, which can further enhance the user experience; at the same time, a catheter support frame is provided to fix the interventional catheter, and the through hole on the catheter support frame is used so that the first pull wire and the second pull wire can pass through and be respectively connected to the first slider and the second slider, which further limits the pulling path of the first pull wire and the second pull wire, and is also more conducive to the resetting of the first pull wire and the second pull wire.

[0028] Furthermore, the catheter handle also includes a locking and fixing portion, which includes a locking piece. Under the action of external force, the locking piece can abut against one of the movable modules in a direction perpendicular to the extension direction of the interventional catheter to limit the movement of the movable module in the extension direction of the interventional catheter.

[0029] In the present scheme, through this arrangement, the locking member is utilized to move in a direction perpendicular to the extension direction of the interventional catheter, and abuts against any one of the movable modules during the movement, and the pressure and friction generated by the mutual abutment are utilized to simultaneously restrict the movement of the two movable modules in the extension direction of the interventional catheter, thereby achieving the locking of the movable modules. At this time, the first pull wire and the second pull wire inside the interventional catheter remain fixed, and the bending of the end of the interventional catheter can also be maintained stable.

[0030] Further, the two moving modules are respectively a first moving module and a second moving module, the first moving module includes a first slider, the second moving module includes a second slider, the first slider is mounted on the edge of the sliding groove in the vertical direction, the second slider is arranged inside the sliding groove and is staggered with the interventional catheter fixed on the transmission bracket;

[0031] The locking and fixing portion also includes a support plate, which is arranged on the transmission bracket and has a through opening corresponding to the sliding groove. The portion of the first sliding block located outside the sliding groove extends out of the support plate through the through opening. The locking member is arranged on the support plate and can abut against the first sliding block in a direction perpendicular to the extension direction of the interventional catheter under the action of external force.

[0032] In this solution, the part of the first slider located outside the sliding groove is used to bear the external force, while the second slider does not need to bear the external force, so the second slider is set inside the sliding groove and is arranged in a staggered manner with the interventional catheter fixed on the transmission bracket; in addition, when the support plate of the locking fixing part is set on the transmission bracket, the first slider vertically extends upward from the support plate through the through opening of the support plate, and the locking member specifically moves on the support plate to abut against the first slider. Through this arrangement, the movement of the locking member is made more stable and reasonable. At the same time, compared with setting it on the inner side of the transmission bracket to move and abut against the second slider, it is moved on the outer side of the transmission bracket to abut against the first slider, which can reduce the structural complexity inside the transmission bracket, avoid interference with the movement of the two sliders, and improve the reliability and stability of the catheter handle during use.

[0033] Further, the locking and fixing part further comprises a pushing member, the pushing member cooperates and abuts against a side of the locking member away from the first slider, and the abutting surfaces of the pushing member and the locking member are both inclined surfaces, the pushing member can move along the extension direction of the interventional catheter under the action of an external force, and during the movement, the locking member is driven by the inclined surface to move along the extension direction perpendicular to the interventional catheter;

[0034] And / or, the locking and fixing portion further includes an elastic member, one end of the elastic member abuts against a side of the locking member close to the first sliding block, and the other end of the elastic member is fixedly disposed relative to the support plate.

[0035] In the present solution, a pushing member is provided on the side of the locking member away from the first slider, and the inclined surface between the pushing member and the locking member is abutted to convert the linear movement of the pushing member along the extension direction of the interventional catheter into the linear movement of the locking member perpendicular to the extension direction of the interventional catheter, which is more convenient for the operator to operate. At the same time, this coordinated movement method can also increase the squeezing force of the locking member on the first slider, and further improve the locking ability of the first slider; an elastic member is further provided on the side of the locking member close to the first slider, and the elastic force of the elastic member is utilized to make the locking member return to its original position more quickly and smoothly, thereby unlocking the first slider.

[0036] Furthermore, the catheter handle further comprises a housing, and the operation transmission part and the locking and fixing part are both arranged inside the housing;

[0037] A protrusion is provided on one side of the pushing member away from the locking member, and a long hole is provided in the shell corresponding to the protrusion. The long hole extends along the extension direction of the interventional catheter, and the protrusion extends out of the shell through the long hole.

[0038] In the present solution, the operating transmission part and the locking and fixing part are both arranged inside the shell, the locking and fixing part is limited by the shell, and the protrusion of the pushing member away from the locking member side can extend out of the long hole of the shell. At this time, the pushing member can abut against the side wall of the shell. The operator can operate the protrusion to realize the movement of the pushing member along the extension direction of the interventional catheter, thereby realizing the locking of the first slider. The operation is simpler and more convenient, and the movement of the pushing member can also be stably carried out under the limitation of the shell, thereby further improving the reliability of the locking and fixing part in locking the first slider.

[0039] A bending control device, characterized in that the bending control device comprises:

[0040] a catheter handle as described above;

[0041] An interventional catheter, wherein a first pull wire and a second pull wire are arranged inside the interventional catheter, and the first pull wire and the second pull wire are respectively used to control a first bending control point and a second bending control point located at opposite ends of the interventional catheter.

[0042] In the present scheme, through this setting, the catheter handle is used to control the first pull wire and the second pull wire inside the interventional catheter, so that one of the pull wires is pulled and the other pull wire is relaxed, and the bending control point corresponding to the pulled pull wire is subjected to force and will bend; in addition, the first bending control point and the second bending control point controlled by the first pull wire and the second pull wire are relatively arranged, and the two can cooperate with each other to further make the interventional catheter respond to the bending control faster, and the bending shape and angle control of the end of the interventional catheter will be more precise.

[0043] Furthermore, the first pull wire and the second pull wire are arranged in parallel inside the interventional catheter, and along the radial direction of the interventional catheter, the first pull wire and the second pull wire are arranged opposite to each other.

[0044] In this solution, through this arrangement, the first pull wire and the second pull wire can directly correspond to the first control bending point and the second control bending point inside the interventional catheter, avoiding interference and crossing between the two pull wires, thereby affecting the control of the corresponding control points.

[0045] The positive and progressive effects of the utility model are:

[0046] The interventional catheter is fixed by a transmission bracket, and the extended end of the interventional catheter can enter the patient's body by moving the transmission bracket;

[0047] The two moving modules of the moving device are respectively connected to the first pull wire and the second pull wire inside the interventional catheter, and the two moving modules are relatively fixed on the transmission pull rope at the same time. The transmission pull rope is used to make the two moving modules move synchronously in opposite directions, so that the first pull wire and the second pull wire can be in a state where one is pulled and the other is relaxed, and the end of the interventional catheter corresponding to the pulled pull wire will be bent, so that the interventional catheter can pass through the tortuous blood vessels inside the body to achieve precise targeted treatment, thereby improving the manipulability of the distal end of the interventional catheter;

[0048] By using the transmission rope to drive the two mobile modules to move synchronously, the interventional catheter can respond faster to the bending control, and the bending shape and angle control of the end of the interventional catheter can be more precise;

[0049] By providing at least one moving device, multiple pairs of first pull wires and second pull wires inside the interventional catheter can be controlled, thereby expanding the bendable direction of the interventional catheter and further expanding the application range of the catheter handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic top view of the overall structure of the bending control device in Example 1 of the utility model.

[0051] Figure 2 It is a schematic exploded view of the overall structure of the catheter handle in Example 1 of the utility model.

[0052] Figure 3 This is a schematic diagram of the overall structure of the bending control device in Example 1 of the utility model, wherein the upper shell, the lower shell and the bending control button are hidden.

[0053] Figure 4 This is a schematic diagram of the overall structure of the operating transmission part in Example 1 of the utility model.

[0054] Figure 5 This is a schematic diagram of the overall structure of the locking and fixing part in Example 1 of the utility model.

[0055] Figure 6 This is a schematic diagram of the overall structure of the catheter support part in Example 1 of the utility model.

[0056] Figure 7 This is a schematic diagram of the bending control device in Example 1 of the utility model when the interventional catheter is in an unbent state.

[0057] Figure 8 This is a schematic diagram (1) of the bending control device in Example 1 of the utility model when the interventional catheter is in a bent state.

[0058] Fig. 9 This is a schematic diagram (II) of the bending control device in Example 1 of the utility model when the interventional catheter is in a bent state.

[0059] Fig.10 This is a schematic diagram of the overall structure of the operating transmission part in Example 2 of the utility model.

[0060] Fig.11 This is a schematic diagram of the connection between the first moving module and the transmission rope in Example 2 of the utility model.

[0061] Fig.12 This is a schematic diagram of the overall structure of the operating transmission part in Example 3 of the utility model.

[0062] Description of reference numerals:

[0063] Bending control device 1; interventional catheter 10; first pull wire 11; second pull wire 12; catheter handle 20; operation transmission part 21; transmission bracket 211; sliding groove 2111; connecting hole 2112; sliding part 2113; first slider 2121; second slider 2122; first adsorption bracket 2123; second adsorption bracket 2124; first magnet 2125; second magnet 2126; transmission pull rope 213; sliding rod 214; locking fixing part 22; locking member 221; support plate 222; through opening 2221; pushing member 223; protrusion 2231; elastic member 224; connecting rod 225; bending control button 23; catheter support part 24; catheter support frame 241; through hole 2411; catheter protection head 242; catheter base 243; upper shell 25; lower shell 26; extension direction L of interventional catheter. DETAILED DESCRIPTION

[0064] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0067] Example 1

[0068] This embodiment provides a bending control device 1, such as Figure 1 and Figure 7 As shown, the bending control device 1 mainly includes an interventional catheter 10 and a catheter handle 20. The first end of the interventional catheter 10 is fixed on the catheter handle 20, and the second end of the interventional catheter 10 extends in a direction away from the catheter handle 20. The interior of the interventional catheter 10 is provided with a first pull wire 11 and a second pull wire 12. The catheter handle 20 pulls the first pull wire 11 and the second pull wire 12 in the interventional catheter 10 to achieve bending control on the second end of the interventional catheter 10.

[0069] Specifically, Figure 2 and Figure 3 As shown, the catheter handle 20 includes an operating transmission part 21, a locking and fixing part 22, a bending control button 23, a catheter support part 24, an upper shell 25 and a lower shell 26. These specific components are described in detail below.

[0070] like Figure 4 and Figure 7 As shown, the operation transmission part 21 includes a transmission bracket 211 and a moving device, the moving device includes two moving sliders and a transmission pull rope 213, the interventional catheter 10 can be fixed on the transmission bracket 211 and extend in a direction away from the transmission bracket 211, the two moving sliders are respectively a first slider 2121 and a second slider 2122, the first slider 2121 and the second slider 2122 are both arranged on the transmission bracket 211, and are respectively used to connect the first pull wire 11 and the second pull wire 12 inside the interventional catheter 10, the transmission pull rope 213 is arranged around the transmission bracket 211, and the first slider 2121 and the second slider 2122 are relatively fixed on the transmission pull rope 213. Among them, any one of the moving sliders can move along the extension direction L of the interventional catheter under the action of external force, and in the process of moving, drive the other moving slider to move in the opposite direction through the transmission pull rope 213.

[0071] With this arrangement, the interventional catheter 10 is fixed by the transmission bracket 211, and the transmission bracket 211 can be moved so that the extended end of the interventional catheter 10 can enter the patient's body; at the same time, the two moving sliders of the moving device are respectively connected to the first pull wire 11 and the second pull wire 12 inside the interventional catheter 10, and the two moving sliders are relatively fixed on the transmission pull rope 213 at the same time, and the transmission pull rope 213 is used to make the two moving sliders move synchronously in opposite directions, so that the first pull wire 11 and the second pull wire 12 can be in a state where one is pulled and the other is relaxed, and the end of the interventional catheter 10 corresponding to the pulled pull wire will be bent, so that the interventional catheter 10 can achieve precise targeted treatment through tortuous blood vessels inside the body, thereby improving the manipulability of the distal end of the interventional catheter 10; at the same time, the transmission pull rope 213 is used to drive the two moving sliders to move synchronously, so that the interventional catheter 10 can respond faster to the bending control, and the bending shape and angle control of the end of the interventional catheter 10 can be more precise.

[0072] It should be noted that, in the present embodiment, one of the movable sliders can move on the transmission bracket 211 along the extension direction L of the interventional catheter under the action of an external force. The setting of this moving direction makes it easier to use the two movable sliders of the movable module to pull or loosen the first pull wire 11 and the second pull wire 12 inside the interventional catheter, which is more labor-saving, and the bending of the end of the interventional catheter is also more stable. However, in other embodiments, one of the movable sliders may not move on the transmission bracket 211 along the extension direction L of the interventional catheter under the action of an external force, but may move in other directions, as long as it can satisfy the pulling or loosening of the first pull wire 11 and the second pull wire 12 inside the interventional catheter as described above.

[0073] Below Figure 7 , Figure 8 and Fig. 9 The bending control of the interventional catheter 10 is further described.

[0074] like Figure 7 As shown, along the extension direction L of the interventional catheter, the first slider 2121 and the second slider 2122 overlap on the transmission bracket 211, and are both located in the middle position of the transmission bracket 211. At this time, the first slider 2121 is connected to the first pull wire 11 inside the interventional catheter 10, and the second slider 2122 is connected to the second pull wire 12 inside the interventional catheter 10. The first pull wire 11 and the second pull wire 12 are both in a relaxed state, and the second end of the interventional catheter 10 is in a straightened state.

[0075] like Figure 8 As shown, when the first slider 2121 moves to the right along the extension direction L of the interventional catheter under the action of external force, the first slider 2121 drives the second slider 2122 to move to the left along the extension direction L of the interventional catheter through the transmission pull rope 213. At this time, the first pull wire 11 connected to the first slider 2121 is in a taut state, while the second pull wire 12 connected to the second slider 2122 is still in a relaxed state. The movement of the first pull wire 11 in the taut state can drive the second end of the interventional catheter 10 to bend toward the direction of the first pull wire 11.

[0076] like Fig. 9 As shown, when the first slider 2121 moves to the left along the extension direction L of the interventional catheter under the action of external force, the first slider 2121 drives the second slider 2122 to move to the right along the extension direction L of the interventional catheter through the transmission pull rope 213. At this time, the first pull wire 11 connected to the first slider 2121 is in a relaxed state, while the second pull wire 12 connected to the second slider 2122 is in a taut state. The movement of the second pull wire 12 in the taut state can drive the second end of the interventional catheter 10 to bend toward the direction of the second pull wire 12.

[0077] In the above description, the first slider 2121 moves under the action of an external force, thereby driving the second slider 2122 to move in the opposite direction synchronously through the transmission rope 213. However, in other embodiments, the second slider 2122 may move under the action of an external force, thereby driving the first slider 2121 to move in the opposite direction synchronously through the transmission rope 213.

[0078] Further, such as Figure 4As shown, along the extension direction L of the interventional catheter, a sliding groove 2111 is specifically provided inside the transmission bracket 211, and two connecting holes 2112 are respectively provided on the end surfaces of the transmission bracket 211 corresponding to the sliding groove 2111. At this time, the transmission pull rope 213 surrounds and passes through the connecting holes 2112 on the end surfaces of the transmission bracket 211, and two straight extension parts are formed between the end surfaces of the transmission bracket 211, and the first slider 2121 and the second slider 2122 are respectively fixed relatively to the two straight extension parts. By arranging a sliding groove 2111 inside the transmission bracket 211, it is more convenient to open connecting holes 2112 on the end faces of the transmission bracket 211 corresponding to the sliding groove 2111 in the extension direction L of the interventional catheter, so that the transmission pull rope 213 can be sequentially inserted into these connecting holes 2112, and two straight extension parts are formed inside the sliding groove 2111. When the two movable sliders are relatively fixed on the two straight extension parts, it is more convenient to use the transmission pull rope 213 to realize the movement of the two movable sliders in opposite directions, so that the entire structure of the catheter handle 20 is more compact and more convenient to operate. At the same time, it is ensured that the two movable sliders will not be separated from the transmission bracket 211, thereby improving the reliability of the catheter handle 20 in controlling the interventional catheter 10.

[0079] Of course, in other embodiments, the transmission rope 213 can also be directly wrapped around the outer wall of the transmission bracket 211, and the first slider 2121 and the second slider 2122 both slide on the outer wall between the transmissions; or, other wraparound methods available in the prior art can also be adopted, as long as the first slider 2121 and the second slider 2122 can be driven to move in opposite directions on the transmission bracket 211.

[0080] It is understandable that the transmission rope 213 in this embodiment is wound in such a way that it forms two sections between the two end surfaces of the transmission bracket 211, and the two sections are straight extensions, and the transmission rope 213 also forms two sections outside the two end surfaces of the transmission bracket 211. Figure 4 As shown, along the extension direction of the interventional catheter 10, the transmission bracket 211 is provided with a sliding portion 2113 on the outer side of its two end faces, and the sliding portion 2113 is located between the two connecting holes 2112 on the corresponding end faces of the transmission bracket 211, and the transmission rope 213 is located at both ends of the outer side of the corresponding end faces of the transmission bracket 211 and is slidably connected to the corresponding sliding portion 2113 respectively.

[0081] It should be noted that the sliding part 2113 can adopt any structure that can achieve sliding in the prior art, such as a fixed pulley, a roller or a fixed curved surface, etc. Through this arrangement, when the transmission rope 213 is sequentially inserted into the connecting hole 2112, it can be slidably connected to the corresponding sliding part 2113 on the outer side of the end surface of both ends of the transmission bracket 211. At this time, when one of the moving sliders moves under the action of an external force, it can more conveniently and smoothly drive the transmission rope 213 to move, and at the same time, it can also more conveniently and smoothly drive the other moving slider to move.

[0082] like Figure 4 As shown, since a sliding groove 2111 is provided on the transmission bracket 211, in this embodiment, the first slider 2121 is mounted on the edge of the sliding groove 2111 in the vertical direction, and the second slider 2122 is arranged inside the sliding groove 2111 and staggered with the interventional catheter 10 fixed on the transmission bracket 211. Through this arrangement, the first slider 2121 is mounted on the edge of the sliding groove 2111 in the vertical direction, and the part of the first slider 2121 located outside the sliding groove 2111 can be used to bear external force, so that the first slider 2121 can slide on the edge of the sliding groove 2111, and the second slider 2122 does not need to be used to bear external force, so it can be arranged inside the sliding groove 2111 and staggered with the interventional catheter 10 fixed on the transmission bracket 211, so that the overall structure of the catheter handle 20 is more compact, and the operator can more conveniently operate it by hand.

[0083] Further, such as Figure 4 As shown, the operation transmission part 21 also includes a slide bar 214, which is arranged inside the sliding groove 2111 along the extension direction L of the interventional catheter, and the two ends of the slide bar 214 are respectively fixed on the two end faces of the transmission bracket 211, and the second slider 2122 is inserted on the slide bar 214 and can move relative to the slide bar 214. Through this arrangement, the second slider 2122 can be inserted on the slide bar 214 inside the sliding groove 2111 and move on the slide bar 214, so as to further define the movement track of the second slider 2122, ensure that the movement of the second slider 2122 will not cause shaking or even detach from the transmission bracket 211, and further improve the reliability of the catheter handle 20 controlling the interventional catheter 10.

[0084] like Figure 1 and Figure 2As shown, the catheter handle 20 also includes a bending control button 23, which is arranged on the first slider 2121 in the vertical direction, and the top of the bending control button 23 has a pressing surface that bears external force. By further arranging the bending control button 23 above the first slider 2121, the pressing surface at the top of the bending control button 23 is used to bear external force, so that the first slider 2121 can be more conveniently moved on the edge of the sliding groove 2111, and the user can directly act on the pressing surface of the bending control button 23 to achieve bending control of the interventional catheter 10, which can further enhance the user's experience. It should be noted that in this embodiment, the catheter handle 20 includes an upper shell 25, so the operation transmission part 21 is placed inside the upper shell 25, and the bending control button 23 can be arranged on the top of the upper shell 25, so that the operator can directly operate the bending control button 23, which is simple and convenient. Of course, in other embodiments, even if the operation transmission part 21 is not provided with an upper shell 25, the bending control button 23 can still be arranged above the first slider 2121.

[0085] In addition, if Figure 2 and Figure 6 As shown, the catheter handle 20 also includes a catheter support portion 24, which specifically includes a catheter support frame 241, a catheter protection head 242 and a catheter base 243. The catheter support frame 241 is penetrated and fixed to the end faces of both ends of the transmission bracket 211, and is located below the first slider 2121 in the vertical direction. The catheter protection head 242 and the catheter base 243 are respectively located on the outer sides of the end faces of both ends between the transmission. A through hole 2411 is provided on the catheter support frame 241 along its radial direction, and the interventional catheter 10 is fixed on the transmission support 211 through the catheter support frame 241. The first pull wire 11 and the second pull wire 12 in the interventional catheter 10 are passed through the through hole 2411 and are respectively connected to the first slider 2121 and the second slider 2122, that is, when the interventional catheter 10 is passed through and fixed in the catheter support frame 241, the first pull wire 11 and the second pull wire 12 in the interventional catheter 10 can be passed through the through hole 2411 and are respectively connected to the first slider 2121 and the second slider 2122, so as to further define the pulling path of the first and second pull wires, and also facilitate the resetting of the first and second pull wires. The material of the catheter protection head 242 is an elastic material, so as to further improve the toughness of the interventional catheter 10 in the bending state at this location.

[0086] Further, such as Figure 2 , Figure 4 and Figure 5As shown, the catheter handle 20 also includes a locking and fixing part 22, and the locking and fixing part 22 also includes a locking member 221. The locking member 221 can abut against the first slider 2121 in a direction perpendicular to the extension direction L of the interventional catheter under the action of an external force, so as to limit the first slider 2121 from moving in the extension direction L of the interventional catheter. Through this arrangement, the locking member 221 is used to move in the extension direction L perpendicular to the interventional catheter, and abuts against the first slider 2121 during the movement. The pressure and friction generated by the mutual abutment can simultaneously limit the movement of the two moving sliders in the extension direction L of the interventional catheter, thereby locking the moving sliders. At this time, the first pull wire 11 and the second pull wire 12 inside the interventional catheter 10 are kept fixed, and the bending of the end of the interventional catheter 10 can also be maintained stable.

[0087] In addition, if Figure 5 As shown, the locking and fixing part 22 also includes a support plate 222, which is arranged on the transmission bracket 211, and the support plate 222 is provided with a through opening 2221 corresponding to the sliding groove 2111, and the part of the first slider 2121 located outside the sliding groove 2111 extends out of the support plate 222 through the through opening 2221, and the locking member 221 is arranged on the support plate 222, and can abut against the first slider 2121 along the extension direction L perpendicular to the interventional catheter under the action of external force. Through this arrangement, the movement of the locking member 221 is made more stable and reasonable, and at the same time, compared with setting it on the inner side of the transmission bracket 211 to move and abut against the second slider 2122, it is made to move on the outer side of the transmission bracket 211 to abut against the first slider 2121, which can reduce the structural complexity of the transmission bracket 211, avoid interference with the movement of the two sliders, and improve the reliability and stability of the catheter handle 20 during use. It should be noted that, in other embodiments, the locking member 221 can also abut against the second slider 2122 by moving itself, and the purpose of locking the two movable sliders can also be achieved.

[0088] Further, such as Figure 5As shown, the locking and fixing part 22 also includes a pusher 223, which cooperates and abuts against the side of the locking member 221 away from the first slider 2121, and the abutting surfaces of the pusher 223 and the locking member 221 are both inclined surfaces. The pusher 223 can move along the extension direction L of the interventional catheter under the action of an external force, and drive the locking member 221 to move along the extension direction L perpendicular to the interventional catheter through the inclined surface during the movement. Through this arrangement, the linear movement of the pusher 223 along the extension direction L of the interventional catheter is converted into the linear movement of the locking member 221 along the extension direction L perpendicular to the interventional catheter, which is more convenient for the operator to operate. At the same time, this cooperative movement method can also increase the squeezing force of the locking member 221 on the first slider 2121, and further improve the locking ability of the moving slider. Meanwhile, the locking and fixing part 22 further includes two elastic members 224, which are arranged above the support plate 222 through two connecting rods 225, one end of the elastic member 224 abuts against a side of the locking member 221 close to the first slider 2121, and the other end of the elastic member 224 is fixedly arranged relative to the support plate 222. The elastic force of the elastic member can make the locking member 221 return to its original position more quickly and smoothly, thereby unlocking the movable slider.

[0089] As described above, the operation transmission part 21 also includes an upper shell 25 and a lower shell 26. The upper shell 25 and the lower shell 26 cooperate with each other in the vertical direction to form a whole. The operation transmission part 21 and the locking and fixing part 22 are both arranged inside the shell. A protrusion 2231 is arranged on the side of the pusher 223 of the locking and fixing part 22 away from the locking part 221. The upper shell 25 is provided with a long hole corresponding to the protrusion 2231. The long hole extends along the extension direction L of the interventional catheter, and the protrusion 2231 extends out of the shell through the long hole. Through this arrangement, the upper shell 25 and the lower shell 26 are used to limit the locking and fixing part 22, and the protrusion 2231 on the side of the pusher 223 away from the locking part 221 can extend out of the long hole of the shell. At this time, the pusher 223 can abut on the side wall of the upper shell 25. The operator can operate the protrusion 2231 to realize the movement of the pusher 223 along the extension direction L of the interventional catheter, thereby realizing the locking of the moving slider. The operation is simpler and more convenient, and the movement of the pusher 223 can also be stably moved under the limit of the upper shell 25, further improving the reliability of the locking and fixing part 22 to lock the moving slider. At the same time, one end of the elastic member 224 can also abut on the side wall of the upper shell 25 to achieve a fixed setting relative to the support plate 222.

[0090] As described above, the interior of the interventional catheter 10 is provided with a first pull wire 11 and a second pull wire 12, each of which has a fixed end and a control end, and the fixed ends of the first pull wire 11 and the second pull wire 12 are fixed at the second end of the interventional catheter 10, and the control ends of the first pull wire 11 and the second pull wire 12 are extended from the first end of the interventional catheter 10, and after passing through the through hole 2411 of the catheter support frame 241, they are respectively connected to the first slider 2121 and the second slider 2122. Among them, at the second end of the interventional catheter 10, there are a first control bending point and a second control bending point that are relatively arranged, and the fixed ends of the first pull wire 11 and the second pull wire 12 are respectively connected to the first control bending point and the second control bending point. Through this arrangement, the catheter handle 20 is used to control the first pull wire 11 and the second pull wire 12 inside the interventional catheter 10, so that one of the pull wires is pulled and the other pull wire is relaxed, and the bending control points corresponding to the pulled pull wires are subjected to force and will bend; in addition, the first bending control points and the second bending control points controlled by the first pull wire 11 and the second bending control points are relatively arranged in the radial direction of the interventional catheter 10, and the two can cooperate with each other to further make the interventional catheter 10 respond faster to the bending control, and the bending shape and angle control of the end of the interventional catheter 10 will be more precise.

[0091] Furthermore, the first pull wire 11 and the second pull wire 12 are arranged in parallel inside the interventional catheter 10, and the first pull wire 11 and the second pull wire 12 are also arranged relatively along the radial direction of the interventional catheter 10. Through this arrangement, the first pull wire 11 and the second pull wire 12 can directly correspond to the first bending control point and the second bending control point inside the interventional catheter 10, avoiding interference and crossing between the two pull wires, thereby affecting the control of the corresponding bending control points.

[0092] Example 2

[0093] This embodiment also provides a catheter handle and a bending control device including the catheter handle, wherein the catheter handle is basically similar to the catheter handle in Embodiment 1, except that the moving device in the operating transmission part 21 in this embodiment includes two moving modules, the two moving modules are respectively a first moving module and a second moving module, the first moving module and the second moving module are also both arranged on the transmission bracket 211, and are respectively used to connect the first pull wire and the second pull wire inside the interventional catheter, the transmission pull rope 213 is arranged around the transmission bracket 211, and the first moving module and the second moving module are relatively fixed on the transmission pull rope 213. Among them, any one of the moving modules can move along the extension direction of the interventional catheter under the action of external force, and drive the other moving module to move in the opposite direction through the transmission pull rope 213 during the movement.

[0094] Specifically, Fig.10 and Fig.11 As shown, the first moving module includes a first slider 2121, a first adsorption bracket 2123 and a second adsorption bracket 2124. Along the extension direction of the interventional catheter, the first adsorption bracket 2123 and the second adsorption bracket 2124 are respectively magnetically attracted to both sides of the first slider 2121, one end of the transmission pull rope 213 passes through the first adsorption bracket 2123 and is fixed on the first slider 2121, and the other end of the transmission pull rope 213 is fixed on the second adsorption bracket 2124. The first moving module is connected to the first pull wire inside the interventional catheter through the first adsorption bracket 2123, and the second moving module is connected to the second pull wire inside the interventional catheter through the second slider 2122.

[0095] With this arrangement, under normal circumstances, the first adsorption bracket 2123 and the second adsorption bracket 2124 are magnetically attracted to the two sides of the first slider 2121 respectively, and the first slider 2121 is used to drive the first adsorption bracket 2123 and the second adsorption bracket 2124 to move, so as to normally pull the first pull wire or the second pull wire to change the bending direction of the interventional catheter; and if the first slider 2121 drives the first adsorption bracket 2123 to move too far, causing the first pull wire to be pulled excessively, the first pull wire will react on the first adsorption bracket 2123, so that the first adsorption bracket 2123 is separated from the first slider 2 121. Similarly, if the first slider 2121 drives the second adsorption bracket 2124 to move a large distance, causing the second slider 2122 to pull the second pull wire excessively, the second pull wire reacts on the second slider 2122 and further acts on the second adsorption bracket 2124, causing the second adsorption bracket 2124 to separate from the first slider 2121. Through the above-mentioned arrangement, excessive operation when controlling the bending of the catheter end can be avoided, causing the distal end of the catheter to excessively contact the blood vessel wall and cause blood vessel spasm. At the same time, it also avoids excessive pulling force on the pull wire to damage the catheter, thereby improving the operability and safety performance of the catheter handle.

[0096] Further, such as Fig.11As shown, the first adsorption bracket 2123 is provided with a first magnet 2125, the second adsorption bracket 2124 is provided with a second magnet 2126, the material of the first slider 2121 is a magnetic material, and the first adsorption bracket 2123 and the second adsorption bracket are magnetically attracted to the two sides of the first slider 2121 through the first magnet 2125 and the second magnet 2126 respectively. Through this arrangement, the first adsorption bracket 2123 and the second adsorption bracket 2124 can be more conveniently separated from the first slider 2121 by force, further improving the convenience of the catheter handle operation. However, in other embodiments, the material of the first adsorption bracket 2123 and the second adsorption bracket 2124 can also be set to a magnetic material, and magnets can be set on both sides of the first slider 2121; or, magnets can be set on the first adsorption bracket 2123, the second adsorption bracket 2124 and the first slider 2121.

[0097] It should be noted that this setting method in the present embodiment can adjust the magnetic attraction force between the first adsorption bracket 2123, the second adsorption bracket 2124 and the first slider 2121 according to specific needs, so that the ultimate pulling force value of the first pull wire reacting to the first adsorption bracket 2123, and the ultimate pulling force value of the second pull wire reacting to the second adsorption bracket 2124 can be set corresponding to the corresponding magnetic attraction force, so that when the tension on the first pull wire or the second pull wire is too large, the first adsorption bracket 2123 or the second adsorption bracket 2124 can be detached from the first slider 2121 in time to effectively achieve the protection effect.

[0098] Example 3

[0099] This embodiment also provides a catheter handle and a bending control device including the catheter handle, wherein the catheter handle is substantially similar to the catheter handle in Embodiment 1, except that the number of moving devices in the operating transmission part 21 in this embodiment is two, such as Fig.12 As shown, each moving device includes two moving sliders and a transmission rope 213, and the two moving sliders are respectively a first slider 2121 and a second slider (not shown in the figure), that is, the operation transmission part includes two first sliders 2121, two second sliders and two transmission ropes 213, and the two first sliders 2121 are arranged at two mutually perpendicular surface positions on the transmission bracket 211, and each second slider and its corresponding first slider 2121 are also arranged at two mutually perpendicular surface positions on the transmission bracket 211. It should be noted that Fig.12 The sliding part 2113 described in the embodiment 1 has structural differences from that in the embodiment 1, but its basic principles and functions to be achieved are consistent with those of the sliding part in the embodiment, which will not be described in detail.

[0100] Further, similar to the first embodiment, the first slider 2121 and the second slider are also used to connect the first pull wire and the second pull wire inside the interventional catheter, respectively. Therefore, the present embodiment can be applied to the situation where there are two pairs of first pull wires and second pull wires inside the interventional catheter. Each moving device controls one pair of the first pull wire and the second pull wire. Through this setting, the two pairs of the first pull wire and the second pull wire inside the interventional catheter can be controlled, the bendable direction of the interventional catheter can be expanded, and the application range of the catheter handle can be further expanded.

[0101] However, in other embodiments, the number of moving devices in the operating transmission part can also be set to more than two, and can be adjusted according to actual conditions to control multiple pairs of first pull wires and second pull wires inside the interventional catheter to further expand the bending direction of the interventional catheter.

[0102] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A catheter handle for controlling the bending direction of an interventional catheter, characterized in that: The catheter handle includes an operation transmission part, the operation transmission part includes a transmission bracket and at least one moving device, the intervention catheter can be fixed on the transmission bracket and extend in a direction away from the transmission bracket, and the moving device includes: Two moving modules, both of which are arranged on the transmission bracket and are used to connect the first pull wire and the second pull wire inside the interventional catheter respectively; A transmission rope is arranged around the transmission bracket, and the two mobile modules are relatively fixed on the transmission rope. One of the mobile modules can move on the transmission bracket under the action of external force, and during the movement, the other mobile module is driven by the transmission rope to move in the opposite direction.

2. The catheter handle according to claim 1, characterized in that: One of the moving modules can move on the transmission bracket along the extension direction of the interventional catheter under the action of external force.

3. The catheter handle according to claim 2, characterized in that: Along the extension direction of the interventional catheter, a sliding groove is provided inside the transmission bracket, and two communication holes are respectively provided on the end surfaces of both ends of the transmission bracket corresponding to the sliding groove; The transmission rope is wound around the connecting hole on the two end surfaces of the transmission bracket, and two straight extension parts are formed between the two end surfaces of the transmission bracket. The two moving modules are respectively fixed relatively to the two straight extension parts.

4. The catheter handle according to claim 3, characterized in that: Along the extension direction of the interventional catheter, the transmission bracket is provided with a sliding portion on the outer side of the end faces at both ends, and the sliding portion is located between the two connecting holes on the corresponding end faces of the transmission bracket, and the transmission rope is slidably connected to the corresponding sliding portion at the position outside the corresponding end faces of the transmission bracket.

5. The catheter handle according to claim 3, characterized in that: The two movable modules are respectively a first movable module and a second movable module, the first movable module includes a first slider, the second movable module includes a second slider, the first slider is mounted on the edge of the sliding groove in the vertical direction, the second slider is arranged inside the sliding groove and is staggered with the interventional catheter fixed on the transmission bracket.

6. The catheter handle according to claim 5, characterized in that: The first moving module also includes a first adsorption bracket and a second adsorption bracket. Along the extension direction of the interventional catheter, the first adsorption bracket and the second adsorption bracket are respectively magnetically attracted to the two sides of the first slider, one end of the transmission pull rope passes through the first adsorption bracket and is fixed on the first slider, and the other end of the transmission pull rope is fixed on the second adsorption bracket. The first moving module is connected to the first pull wire inside the interventional catheter through the first adsorption bracket, and the second moving module is connected to the second pull wire inside the interventional catheter through the second slider.

7. The catheter handle according to claim 6, characterized in that: The first adsorption bracket is provided with a first magnet, the second adsorption bracket is provided with a second magnet, the first slider is made of magnetic material, and the first adsorption bracket and the second adsorption bracket are magnetically attracted to both sides of the first slider through the first magnet and the second magnet respectively.

8. The catheter handle according to claim 5, characterized in that: The operation transmission part also includes a sliding rod, which is arranged inside the sliding groove along the extension direction of the interventional catheter. Both ends of the sliding rod are respectively fixed on the end surfaces of the transmission bracket. The second sliding block is inserted into the sliding rod and can move relative to the sliding rod.

9. The catheter handle according to claim 5, characterized in that: The catheter handle further comprises a bending control button, which is arranged on the first sliding block in the vertical direction, and the top of the bending control button has a pressing surface for bearing external force; And / or, the catheter handle also includes a catheter support frame, which is penetrated and fixed on the two end faces of the transmission bracket along the extension direction of the interventional catheter, and is located below the first slider in the vertical direction. A through hole is opened on the catheter support frame along its radial direction, and the interventional catheter is fixed to the transmission bracket through the catheter support frame. The first pull wire and the second pull wire in the interventional catheter are penetrated through the through hole and are respectively connected to the first slider and the second slider.

10. The catheter handle according to claim 3, characterized in that: The catheter handle also includes a locking and fixing portion, which includes a locking piece. Under the action of external force, the locking piece can abut against one of the movable modules in a direction perpendicular to the extension direction of the interventional catheter to limit the movement of the movable module in the extension direction of the interventional catheter.

11. The catheter handle according to claim 10, characterized in that: The two moving modules are respectively a first moving module and a second moving module, the first moving module includes a first slider, the second moving module includes a second slider, the first slider is mounted on the edge of the sliding groove in a vertical direction, the second slider is arranged inside the sliding groove and is staggered with the interventional catheter fixed on the transmission bracket; The locking and fixing portion also includes a support plate, which is arranged on the transmission bracket and has a through opening corresponding to the sliding groove. The portion of the first sliding block located outside the sliding groove extends out of the support plate through the through opening. The locking member is arranged on the support plate and can abut against the first sliding block in a direction perpendicular to the extension direction of the interventional catheter under the action of external force.

12. The catheter handle according to claim 11, characterized in that The locking and fixing part further includes a pushing member, the pushing member cooperates and abuts against a side of the locking member away from the first slider, and the abutting surfaces of the pushing member and the locking member are both inclined surfaces, the pushing member can move along the extension direction of the interventional catheter under the action of an external force, and during the movement, the locking member is driven by the inclined surface to move along the extension direction perpendicular to the interventional catheter; And / or, the locking and fixing portion further includes an elastic member, one end of the elastic member abuts against a side of the locking member close to the first sliding block, and the other end of the elastic member is fixedly disposed relative to the support plate.

13. The catheter handle according to claim 12, characterized in that: The catheter handle further comprises a housing, wherein the operation transmission part and the locking and fixing part are both arranged inside the housing; A protrusion is provided on one side of the pushing member away from the locking member, and a long hole is provided in the shell corresponding to the protrusion. The long hole extends along the extension direction of the interventional catheter, and the protrusion extends out of the shell through the long hole.

14. A bending control device, characterized in that: The bending control device comprises: The catheter handle according to any one of claims 1 to 13; An interventional catheter, wherein a first pull wire and a second pull wire are arranged inside the interventional catheter, and the first pull wire and the second pull wire are respectively used to control a first bending control point and a second bending control point located at opposite ends of the interventional catheter.

15. The bending control device according to claim 14, characterized in that: The first pull wire and the second pull wire are arranged in parallel inside the interventional catheter, and along the radial direction of the interventional catheter, the first pull wire and the second pull wire are arranged opposite to each other.

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