Device for assembling bending-adjustable interventional catheter

Abstract

The utility model provides a device for assembling a bending-adjustable interventional catheter, and relates to the technical field of medical instruments. A device for assembling an adjustable bending interventional catheter includes first to third assemblies, a traction assembly, and a knitting assembly. The first assembly part is used for extending into the intervention main pipe, the first control pipe and the second control pipe. The second assembly part is located at the downstream of the first assembly part, and an assembly hole of the second assembly part is used for allowing the intervention main pipe, the first control pipe and the second control pipe to stretch in at the same time. The fixing hole of the third assembly part is used for allowing the second assembly part to penetrate through, extending into the first assembly part and selectively fixing the outer wall of the first assembly part. The traction assembly is located on the downstream portion of the third assembly part so as to simultaneously pull the intervention main pipe, the first control pipe and the second control pipe to move in the downstream direction. The weaving assembly is located between the third assembly part and the traction assembly and used for forming a weaving layer. According to the device for assembling the bending-adjustable interventional catheter, the safety and the assembling operation convenience of the bending-adjustable interventional catheter can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a device for assembling an adjustable bend interventional catheter. Background Art

[0002] Adjustable interventional catheters, such as microcatheters, guide catheters, and angiography catheters, are essential tools in interventional surgery. They can assist other therapeutic devices or reagents in accurately reaching the designated lesion location.

[0003] An adjustable-bend interventional catheter is typically a three-lumen tube consisting of an interventional main tube, two control tubes radially outwardly located on the main tube, and a braided layer that overlies both the main tube and the two control tubes. The two control tubes pass through control wires, which are connected to a handle. The handle bends the end of the adjustable-bend interventional catheter (i.e., the tip) away from the handle, allowing the catheter to reach the designated lesion location. The interventional main tube is primarily used to allow the insertion of therapeutic instruments or reagents for treatment and diagnostic procedures.

[0004] Currently, the typical method for assembling a three-lumen, adjustable-bend interventional catheter is to securely connect the main interventional tube and the control tube using a manual application of glue (e.g., UV glue), followed by a braiding mechanism to form a braided layer that simultaneously covers the main interventional tube and the two control tubes. However, the glue is difficult to completely decompose and remove through methods such as heat treatment, which compromises the safety of the adjustable-bend interventional catheter. Furthermore, this method is not very user-friendly. Utility Model Content

[0005] The purpose of the present application is to provide a device for assembling an adjustable bend interventional catheter, which aims to improve the safety of the adjustable bend interventional catheter and the operational convenience of assembling and preparing the adjustable bend interventional catheter.

[0006] The present application provides a device for assembling an adjustable curved interventional catheter, the adjustable curved interventional catheter comprising an interventional main tube, a first control tube and a second control tube located on opposite radial sides of the interventional main tube, and a braided layer simultaneously sleeved over the interventional main tube, the first control tube, and the second control tube. The device for assembling an adjustable curved interventional catheter comprises a first assembly, a second assembly, a third assembly, a traction assembly, and a braided assembly. The first assembly comprises a first lumen, a second lumen, and a third lumen for respectively inserting into the interventional main tube, the first control tube, and the second control tube, the second lumen and the third lumen being located on opposite radial sides of the first lumen. The second assembly is located downstream of the first assembly and has an assembly hole for simultaneously inserting into the interventional main tube, the first control tube, and the second control tube, and for abutting against the radial outer walls of the interventional main tube, the first control tube, and the second control tube. The third assembly comprises a fixing hole for allowing the second assembly to pass through, and the fixing hole is used to insert into the first assembly and selectively fix the outer wall of the first assembly. The pulling assembly is located downstream of the third assembly and is used to simultaneously pull the interventional main tube, the first control tube, and the second control tube in a downstream direction. The braiding assembly is located between the third assembly and the pulling assembly and is used to form a braided layer that is simultaneously wrapped around the interventional main tube, the first control tube, and the second control tube.

[0007] In the device for assembling an adjustable curved interventional catheter provided in the present application, the first lumen, the second lumen and the third lumen in the first assembly can respectively allow the interventional main tube, the first control tube and the second control tube of the adjustable curved interventional catheter to be inserted therein, so as to restrict and constrain the relative positions of the interventional main tube, the first control tube and the second control tube; the assembly hole of the second assembly is used to insert and gather and tighten the interventional main tube, the first control tube and the second control tube extending from the first assembly, so that the head ends and middle areas of the interventional main tube, the first control tube and the second control tube are restricted and constrained by the second assembly and the first assembly respectively; the third assembly is used to allow the second assembly to pass through with the head ends of the interventional main tube, the first control tube and the second control tube, and further allow the first assembly to be inserted into and fixed in the third assembly; the traction assembly is used to pull the second assembly to move downstream, so that the relative positions of the interventional main tube, the first control tube and the second control tube move downstream at the same time while being constrained; the braiding assembly can form a braided layer on the outside of the interventional main tube, the first control tube and the second control tube extending from the third assembly.

[0008] By using the device for assembling an adjustable bend interventional catheter provided by the present application, the relative positions of the interventional main tube, the first control tube and the second control tube are restricted when forming the braided layer through the mutual cooperation of the first assembly part, the second assembly part and the third assembly part. There is no need to use glue to fix the relative positions of the interventional main tube, the first control tube and the second control tube, thus avoiding the safety problems caused by the use of glue; and through the mutual cooperation of the braiding component and the traction component, it is possible to form the braided layer while traction is performed on the interventional main tube, the first control tube and the second control tube to move downstream, thereby improving production efficiency and being highly convenient to operate.

[0009] In an optional embodiment of the present application, the first cavity, the second cavity and the third cavity are all tubular structures; the second cavity and the third cavity are respectively fixed on opposite sides of the radial direction of the first cavity, and the connection between the first cavity and the second cavity shares a common wall, and the connection between the first cavity and the third cavity shares a common wall.

[0010] In an optional embodiment of the present application, the outer diameters of the first and second control tubes are smaller than the outer diameter of the interventional main tube, and the inner diameters of the second and third lumens are smaller than the inner diameter of the first lumen.

[0011] In an optional embodiment of the present application, along the extension direction of the first cavity, the first assembly has a first end and a second end relative to each other, and the second end is located downstream of the first end; the first cavity located at the first end protrudes from the second cavity and the third cavity, and the second cavity and the third cavity located at the second end both protrude from the first cavity.

[0012] The above technical solution facilitates the insertion of the interventional main tube, the first control tube and the second control tube into the first lumen, the second lumen and the third lumen respectively.

[0013] In an optional embodiment of the present application, the second assembly is a tubular structure, and the assembly hole passes through the second assembly along the axial direction of the second assembly.

[0014] The above technical solution makes it easy for the interventional main pipe, the first control pipe and the second control pipe extending from the first assembly to be simultaneously extended into the assembly hole of the second assembly and fastened together, and also makes it easy for the second assembly to carry the head ends of the interventional main pipe, the first control pipe and the second control pipe through the fixing hole of the third assembly to be towed by the traction assembly to move downstream.

[0015] In an optional embodiment of the present application, the third assembly further includes a fixing member; the fixing member is used to extend into the third assembly along the radial direction of the fixing hole, and to support the outer wall of the first assembly extending into the fixing hole.

[0016] The above technical solution can enable the third assembly to selectively fix the outer wall of the first assembly.

[0017] In an optional embodiment of the present application, the third assembly also has a through hole connected to the fixing hole, and the axial direction of the through hole is parallel to the radial direction of the fixing hole; the inner wall of the through hole has a thread, and the outer surface of the fixing member has a thread, and the fixing member is used to extend into the through hole and be threadedly connected to the inner wall of the through hole.

[0018] In the above technical solution, the third assembly can optionally stably fix the outer wall of the first assembly.

[0019] In an optional embodiment of the present application, the third assembly includes a kit and a sleeve, and the fixing hole, the through hole and the fixing member are all arranged in the kit; the kit has a third end and a fourth end opposite to each other along the axial direction of the fixing hole, and the fourth end is located downstream of the third end; the axial direction of the sleeve is parallel to the axial direction of the fixing hole, the third end is sleeved in the sleeve, the fourth end is located outside the sleeve, and the through hole is located at the fourth end; the second assembly is used to pass through the sleeve and the fixing hole in sequence, and the first assembly is used to extend into the sleeve and the fixing hole in sequence.

[0020] In the above technical solution, the sleeve provides space for the second assembly and the first assembly to extend into the third assembly, and the kit is used to selectively fix the outer wall of the first assembly.

[0021] In an optional embodiment of the present application, the kit further has a boss, which is arranged on the outer periphery of the fourth end around the axial direction of the fixing hole; the space formed between the boss and the third end is clamped with the downstream area of ​​the sleeve.

[0022] The above technical solution can achieve stable connection between the kit and the sleeve.

[0023] In an optional embodiment of the present application, the traction assembly includes a first conveyor belt and a second conveyor belt arranged relative to each other along a preset direction, the preset direction is perpendicular to the traction direction, and the first conveyor belt and the second conveyor belt are used to jointly pull the intervention main pipe, the first control pipe and the second control pipe toward the downstream direction.

[0024] The above technical solution can realize that the traction assembly jointly pulls the intervention main pipe, the first control pipe and the second control pipe to move in the downstream direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 Schematic diagram of the structure of the intervention supervisor.

[0027] Figure 2A schematic structural diagram of the device for assembling an adjustable bend interventional catheter provided in an embodiment of the present application during assembly.

[0028] Figure 3 A schematic cross-sectional view of the device for assembling an adjustable bend interventional catheter provided in an embodiment of the present application during assembly.

[0029] Figure 4 This is a schematic structural diagram of the first assembly provided in an embodiment of the present application from a first perspective.

[0030] Figure 5 This is a structural schematic diagram of the first assembly provided in an embodiment of the present application from a second perspective.

[0031] Figure 6 A schematic diagram of the first assembly and the second assembly performing assembly work is provided for the embodiment of the present application.

[0032] Figure 7 A schematic diagram of the working of a device for assembling an adjustable bend interventional catheter provided in an embodiment of the present application.

[0033] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0034] Figure 9 A schematic diagram of the structure of the kit provided in an embodiment of the present application.

[0035] Figure 10 A schematic cross-sectional view of the kit provided in an embodiment of the present application.

[0036] Icon: 10-intervention main tube; 20-first control tube; 30-second control tube; 40-braided layer.

[0037] 100-first assembly part; 101-first end; 102-second end; 110-first cavity; 120-second cavity; 130-third cavity; 200-second assembly part; 210-assembly hole; 300-third assembly part; 310-kit; 301-third end; 302-fourth end; 311-fixing hole; 312-through hole; 313-boss; 320-sleeve; 400-traction component; 410-first conveyor belt; 420-second conveyor belt; 500-weaving component. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "middle", "lower", and "inner" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified or limited, technical terms such as "connection" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0044] Adjustable interventional catheters, such as microcatheters, guide catheters, and angiography catheters, are essential tools in interventional surgery. They can assist other therapeutic devices or reagents in accurately reaching the designated lesion location. Figure 1 For a schematic diagram of the structure of the interventional supervisor 10, please refer to Figure 1The adjustable bend interventional catheter includes an interventional main tube 10, a first control tube 20, a second control tube 30 and a braided layer 40; the first control tube 20 and the second control tube 30 are respectively located on opposite sides of the radial direction of the interventional main tube 10; the braided layer 40 is simultaneously sleeved on the outside of the interventional main tube 10, the first control tube 20 and the second control tube 30.

[0045] Currently, the commonly used method for assembling an adjustable-bend interventional catheter of the aforementioned structure is to securely connect the interventional main tube 10 to the first and second control tubes 20 and 30 by manually applying glue (e.g., UV glue). A braiding mechanism is then used to form a braided layer 40 that simultaneously covers the interventional main tube 10, the first and second control tubes 20, 30. However, the glue is difficult to completely decompose and remove through methods such as heat treatment, which compromises the safety of the adjustable-bend interventional catheter. Furthermore, this method is not very user-friendly.

[0046] To solve the above problems, the present invention provides a device for assembling an adjustable bend interventional catheter. Figure 2 This is a schematic structural diagram of the device for assembling an adjustable bend interventional catheter provided in an embodiment of the present application during assembly. Figure 3 This is a cross-sectional diagram corresponding to the assembly work of the device for assembling an adjustable bend interventional catheter provided in an embodiment of the present application; please refer to Figure 2 and Figure 3 The device for assembling an adjustable bend interventional catheter includes a first assembly 100 , a second assembly 200 , a third assembly 300 , a traction assembly 400 and a braiding assembly 500 .

[0047] Figure 4 This is a structural diagram of the first assembly 100 provided in an embodiment of the present application from a first perspective. Figure 5 This is a structural diagram of the first assembly 100 provided in the embodiment of the present application from a second perspective; Figures 2 to 5 The first assembly 100 has a first lumen 110, a second lumen 120 and a third lumen 130 for inserting the interventional main tube 10, the first control tube 20 and the second control tube 30 respectively. The second lumen 120 and the third lumen 130 are respectively located on opposite sides of the first lumen 110 in the radial direction.

[0048] Figure 6 The present invention provides a schematic diagram of the first assembly 100 and the second assembly 200 for performing assembly work. Figures 2 to 6The second assembly 200 is located downstream of the first assembly 100. The second assembly 200 has an assembly hole 210. The assembly hole 210 is used to simultaneously extend into the interventional main tube 10, the first control tube 20 and the second control tube 30, and to support the radial outer walls of the interventional main tube 10, the first control tube 20 and the second control tube 30.

[0049] The third assembly 300 has a fixing hole 311 for passing the second assembly 200 therethrough. The fixing hole 311 is also configured to extend into the first assembly 100 and selectively fix the outer wall of the first assembly 100. The pulling assembly 400 is located downstream of the third assembly 300 and is configured to simultaneously pull the interventional main tube 10, the first control tube 20, and the second control tube 30 downstream.

[0050] The braiding assembly 500 is located between the third assembly component 300 and the pulling assembly 400 and is used to form a braiding layer 40 that is simultaneously sleeved over the interventional main tube 10 , the first steering tube 20 , and the second steering tube 30 .

[0051] Figure 7 This is a working diagram of a device for assembling an adjustable bend interventional catheter provided in an embodiment of the present application. Figure 8 for Figure 7 Enlarged view of point A in the middle; see Figures 2 to 8 In the device for assembling an adjustable curved interventional catheter provided in the present application, the first lumen 110, the second lumen 120, and the third lumen 130 in the first assembly 100 can respectively allow the interventional main tube 10, the first control tube 20, and the second control tube 30 of the adjustable curved interventional catheter to extend therein, so as to restrict the relative positions of the interventional main tube 10, the first control tube 20, and the second control tube 30; the assembly hole 210 of the second assembly 200 is used to extend therein and gather and fasten the interventional main tube 10, the first control tube 20, and the second control tube 30 extending from the first assembly 100, so that the head ends and middle areas of the interventional main tube 10, the first control tube 20, and the second control tube 30 are restricted by the second assembly 200 and the first assembly 100, respectively (e.g., Figure 6 As shown); the third assembly 300 is used to allow the second assembly 200 to pass through with the interventional main tube 10, the first control tube 20 and the head end of the second control tube 30, and further allow the first assembly 100 to extend into and be fixed in the third assembly 300 (as shown Figure 7 and Figure 8The traction component 400 is used to pull the second assembly 200 to move downstream, so that the relative positions of the interventional main tube 10, the first control tube 20, and the second control tube 30 move simultaneously downstream under constraints; the braiding component 500 can form a braided layer 40 on the outside of the interventional main tube 10, the first control tube 20, and the second control tube 30 extending from the third assembly 300.

[0052] By using the device for assembling an adjustable bend interventional catheter provided in the present application, the first assembly 100, the second assembly 200 and the third assembly 300 cooperate with each other to limit the relative positions of the interventional main tube 10, the first control tube 20 and the second control tube 30 when forming the braided layer 40. There is no need to use glue to fix the relative positions of the interventional main tube 10, the first control tube 20 and the second control tube 30, thereby avoiding safety issues caused by the use of glue; and through the mutual cooperation of the braiding component 500 and the traction component 400, it is possible to form the braided layer 40 while pulling the interventional main tube 10, the first control tube 20 and the second control tube 30 downstream, thereby improving production efficiency and increasing operational convenience.

[0053] In some optional embodiments of the present application, the first lumen 110 , the second lumen 120 , and the third lumen 130 are all tubular structures, and the second lumen 120 and the third lumen 130 are respectively fixed on opposite sides of the first lumen 110 in the radial direction.

[0054] Furthermore, the connection between the first cavity 110 and the second cavity 120 shares a common wall, and the connection between the first cavity 110 and the third cavity 130 shares a common wall.

[0055] See also Figure 1 In some cases, the outer diameter of the first control tube 20 and the outer diameter of the second control tube 30 are both smaller than the outer diameter of the interventional main tube 10; in order to realize that the first assembly 100 can limit the relative positions of the interventional main tube 10, the first control tube 20 and the second control tube 30 in the above case, in some optional embodiments of the present application, please refer to Figure 4 , the inner diameter of the second cavity 120 and the inner diameter of the third cavity 130 are both smaller than the inner diameter of the first cavity 110 .

[0056] It should be noted that in other feasible embodiments of the present application, the relationship between the inner diameters of the first lumen 110, the second lumen 120 and the third lumen 130 can also be determined based on the relationship between the outer diameters of the interventional main tube 10, the first control tube 20 and the second control tube 30 in the adjustable bend interventional catheter.

[0057] Please refer again Figure 1In some cases, the interventional main tube 10, the first control tube 20, and the second control tube 30 in the adjustable bend interventional catheter are parallel to each other, that is, the axes of the interventional main tube 10, the first control tube 20, and the second control tube 30 are coplanar; in order to be applicable to the adjustable bend interventional catheter with the above-mentioned specific position relationship, in some optional embodiments of the present application, please refer to Figure 4 The first lumen 110 , the second lumen 120 , and the third lumen 130 are all tubular structures, and the axial directions of the first lumen 110 , the second lumen 120 , and the third lumen 130 are coplanar.

[0058] See also Figure 5 and Figure 6 In some optional embodiments of the present application, along the extension direction of the first lumen 110, the first assembly 100 has a first end 101 and a second end 102, with the second end 102 located downstream of the first end 101. The first lumen 110 at the first end 101 protrudes from the second lumen 120 and the third lumen 130, while the second lumen 120 and the third lumen 130 at the second end 102 both protrude from the first lumen 110. This arrangement facilitates the insertion of the interventional main tube 10, the first control tube 20, and the second control tube 30 into the first lumen 110, the second lumen 120, and the third lumen 130, respectively.

[0059] As an example, the material of the first assembly 100 can be stainless steel, polyetheretherketone (PEEK), or quartz.

[0060] See also Figure 3 In some optional embodiments of the present application, the second assembly 200 is a tubular structure, and the assembly hole 210 extends through the second assembly 200 along its axial direction. This arrangement facilitates the simultaneous insertion of the main intervention tube 10, the first control tube 20, and the second control tube 30 extending from the first assembly 100 into the assembly hole 210 of the second assembly 200 for convergence and fastening. It also facilitates the second assembly 200, carrying the head ends of the main intervention tube 10, the first control tube 20, and the second control tube 30, through the fixing hole 311 of the third assembly 300, so as to be pulled downstream by the pulling assembly 400.

[0061] See also Figure 2 、 Figure 3 、 Figure 7 as well as Figure 8 In some optional embodiments of the present application, the third assembly 300 includes a sleeve 310 and a sleeve 320. In the above structure, the sleeve provides space for the second assembly 200 and the first assembly 100 to extend into the third assembly 300, and the sleeve 310 is used to selectively fix the outer wall of the first assembly 100.

[0062] Figure 9This is a schematic diagram of the structure of the kit 310 provided in an embodiment of the present application. Figure 10 For a cross-sectional view of the kit 310 provided in the embodiment of the present application, please refer to Figures 2 to 10 In some optional embodiments of the present application, the third assembly 300 further includes a fixing member; the fixing member is configured to extend into the third assembly 300 along the radial direction of the fixing hole 311 and to abut against the outer wall of the first assembly 100 that extends into the fixing hole 311. This method allows the third assembly 300 to selectively fix the outer wall of the first assembly 100.

[0063] Furthermore, the third assembly 300 has a through hole 312 communicating with the fixing hole 311. The axial direction of the through hole 312 is parallel to the radial direction of the fixing hole 311. The inner wall of the through hole 312 is threaded, and the outer surface of the fixing member is threaded. The fixing member is configured to extend into the through hole 312 and be threadedly connected to the inner wall of the through hole 312. This arrangement allows the third assembly 300 to selectively and stably secure the outer wall of the first assembly 100.

[0064] Furthermore, the third assembly 300 has two through-holes 312 and two fixing members. The two through-holes 312 are symmetrically arranged along the axis of the through-hole 312. The two fixing members are respectively configured to extend into the two through-holes 312 and to jointly abut against opposite sides of the outer wall of the first assembly 100 within the through-holes 312. This arrangement can further enhance the stability of the third assembly 300 in securing the outer wall of the first assembly 100.

[0065] In some optional embodiments of the present application, the fixing hole 311, the through hole 312 and the fixing piece are all arranged in the kit 310; the kit 310 has a third end 301 and a fourth end 302 that are opposite to each other along the axial direction of the fixing hole 311, and the fourth end 302 is located downstream of the third end 301; the axial direction of the sleeve 320 is parallel to the axial direction of the fixing hole 311, the third end 301 is sleeved in the sleeve 320, the fourth end 302 is located outside the sleeve 320, and the through hole 312 is located at the fourth end 302; the second assembly 200 is used to pass through the sleeve 320 and the fixing hole 311 in sequence, and the first assembly 100 is used to extend into the sleeve 320 and the fixing hole 311 in sequence.

[0066] In order to achieve a stable connection between the kit 310 and the sleeve 320, in some optional embodiments of the present application, the kit 310 also has a boss 313, which is axially arranged on the outer periphery of the fourth end 302 around the fixing hole 311; the space formed between the boss 313 and the third end 301 is clamped with the downstream area of ​​the sleeve 320.

[0067] As an example, the material of the kit 310 can be stainless steel, Teflon, or nylon.

[0068] In some optional embodiments of the present application, the traction assembly 400 includes a first conveyor belt 410 and a second conveyor belt 420 arranged relative to each other along a preset direction, the preset direction is perpendicular to the traction direction, and the first conveyor belt 410 and the second conveyor belt 420 are used to jointly pull the interventional main tube 10, the first control tube 20 and the second control tube 30 toward the downstream direction.

[0069] It should be noted that in other feasible embodiments of the present application, the traction assembly 400 may be other components, such as a linear drive mechanism, etc., as long as it can achieve the common traction of the interventional main tube 10, the first control tube 20 and the second control tube 30 to move downstream.

[0070] As an example, the process of assembling an adjustable bend interventional catheter is as follows:

[0071] (1) First, insert the interventional main tube 10, the first control tube 20, and the second control tube 30 of the adjustable bend interventional catheter into the first lumen 110, the second lumen 120, and the third lumen 130 of the first assembly 100, respectively.

[0072] (2) The interventional main tube 10, the first control tube 20, and the second control tube 30 extending from the first assembly 100 are simultaneously extended into the assembly hole 210 of the second assembly 200, so that the head ends and middle areas of the interventional main tube 10, the first control tube 20, and the second control tube 30 are restricted and constrained by the second assembly 200 and the first assembly 100, respectively.

[0073] (3) The second assembly 200 with the head ends of the interventional main tube 10, the first control tube 20 and the second control tube 30 passes through the fixing hole 311 of the third assembly 300, and the first assembly 100 with the middle area of ​​the interventional main tube 10, the first control tube 20 and the second control tube 30 extends into the fixing hole 311 of the third assembly 300, and then the first assembly 100 is fixed in the fixing hole 311 of the third assembly 300.

[0074] (4) The pulling assembly 400 pulls the second assembly 200 to move downstream, so that the relative positions of the interventional main tube 10, the first steering tube 20, and the second steering tube 30 move simultaneously downstream while being constrained.

[0075] (5) The braiding component 500 is braided on the outside of the interventional main tube 10, the first control tube 20 and the second control tube 30 extending from the third assembly 300 to form a braided layer 40 that is simultaneously sleeved on the outside of the interventional main tube 10, the first control tube 20 and the second control tube 30.

[0076] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A device for assembling an adjustable-bend interventional catheter, the adjustable-bend interventional catheter comprising an interventional main tube, a first control tube and a second control tube located on opposite radial sides of the interventional main tube, and a braided layer simultaneously sleeved over the interventional main tube, the first control tube, and the second control tube; characterized in that: The device for assembling an adjustable bend interventional catheter comprises: a first assembly having a first lumen, a second lumen, and a third lumen for respectively extending into the interventional main tube, the first steering tube, and the second steering tube, wherein the second lumen and the third lumen are located on opposite sides of the first lumen in a radial direction; a second assembly located downstream of the first assembly, the second assembly having an assembly hole configured to simultaneously extend into the interventional main tube, the first steering tube, and the second steering tube, and to abut against radially outer circumferential walls of the interventional main tube, the first steering tube, and the second steering tube; a third assembly, the third assembly having a fixing hole for allowing the second assembly to pass therethrough, and the fixing hole for extending into the first assembly and selectively fixing an outer wall of the first assembly; a pulling assembly, located downstream of the third assembly and configured to simultaneously pull the interventional main tube, the first steering tube, and the second steering tube toward the downstream direction; A braided component is located between the third assembly and the traction component and is used to form the braided layer that is simultaneously sleeved on the outside of the interventional main tube, the first steering tube, and the second steering tube.

2. The device for assembling an adjustable bend interventional catheter according to claim 1, characterized in that: The first cavity, the second cavity and the third cavity are all tubular structures; the second cavity and the third cavity are respectively fixed on opposite sides of the radial direction of the first cavity, and the connection between the first cavity and the second cavity shares a common wall, and the connection between the first cavity and the third cavity shares a common wall.

3. The device for assembling an adjustable bend interventional catheter according to claim 2, characterized in that: The outer diameters of the first steering tube and the second steering tube are both smaller than the outer diameter of the interventional main tube, and the inner diameters of the second lumen and the third lumen are both smaller than the inner diameter of the first lumen.

4. The device for assembling an adjustable bend interventional catheter according to claim 1, characterized in that: Along the extension direction of the first cavity, the first assembly has a first end and a second end opposite to each other, and the second end is located downstream of the first end; The first cavity located at the first end protrudes from the second cavity and the third cavity, and the second cavity and the third cavity located at the second end both protrude from the first cavity.

5. The device for assembling an adjustable bend interventional catheter according to claim 1, characterized in that: The second assembly piece is a tubular structure, and the assembly hole passes through the second assembly piece along an axial direction of the second assembly piece.

6. The device for assembling an adjustable bend interventional catheter according to any one of claims 1 to 5, characterized in that: The third assembly also includes a fixing member; the fixing member is used to extend into the third assembly along the radial direction of the fixing hole and to abut against the outer wall of the first assembly extending into the fixing hole.

7. The device for assembling an adjustable bend interventional catheter according to claim 6, characterized in that: The third assembly further comprises a through hole communicating with the fixing hole, wherein the axial direction of the through hole is parallel to the radial direction of the fixing hole; The inner wall of the through hole has a thread, the outer surface of the fixing piece has a thread, and the fixing piece is used to extend into the through hole and be threadedly connected to the inner wall of the through hole.

8. The device for assembling an adjustable bend interventional catheter according to claim 7, characterized in that: The third assembly includes a sleeve and a sleeve, and the fixing hole, the through hole and the fixing member are all provided in the sleeve; The kit has a third end and a fourth end opposite to each other along the axial direction of the fixing hole, and the fourth end is located downstream of the third end; the axial direction of the sleeve is parallel to the axial direction of the fixing hole, the third end is sleeved in the sleeve, the fourth end is located outside the sleeve, and the through hole is located at the fourth end; the second assembly is used to pass through the sleeve and the fixing hole in sequence, and the first assembly is used to extend into the sleeve and the fixing hole in sequence.

9. The device for assembling an adjustable bend interventional catheter according to claim 8, characterized in that: The kit further comprises a boss, which is arranged on the outer periphery of the fourth end around the axial direction of the fixing hole; The space formed between the boss and the third end is engaged with the downstream area of ​​the sleeve.

10. The device for assembling an adjustable bend interventional catheter according to any one of claims 1 to 5, characterized in that: The traction assembly includes a first conveyor belt and a second conveyor belt arranged relative to each other along a preset direction, wherein the preset direction is perpendicular to the traction direction. The first conveyor belt and the second conveyor belt are used to jointly pull the interventional main tube, the first control tube and the second control tube to move downstream.

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