Tube body assembly of interventional operation conveying device and interventional operation conveying device
Through the welding technology of the guide wire tube and the first tube body, the problem of bonding between the inner tube and the inner core tube in the cardiovascular implant delivery system is solved, and the stable binding, antibacterial and anti-flexural effects are achieved, which is suitable for batch processing. Production.
Patent Information
- Application Number
- CN202420616632.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-03-27
AI Technical Summary
In the existing cardiovascular implant delivery system, the glue bonding method between the inner tube and the inner core tube has problems such as bacteria residue, insufficient tensile strength, easy bending and discounting, and complex processes, which is difficult to meet the needs of mass production.
By welding the guide tube to the first pipe body, the low melting temperature material of the first pipe body flows uniformly at high temperature, filling the gap between the guide tube and the first pipe body, forming an integrated molding structure, solving the problem of empty space Cavity problems and insufficient bonding strength.
The stable combination between the guide wire tube and the first tube body is achieved, the residue of bacteria is avoided, the tensile strength and flexural resistance are significantly improved, and it is suitable for mass production.
Smart Images
Figure CN222467826U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a tube body assembly of an interventional delivery device and an interventional delivery device. Background Art
[0002] In the cardiovascular implant delivery system, the implant is generally pressed and gripped between the inner tube and the outer tube, the inner tube remains stable and motionless, and the outer tube moves forward and backward to achieve the collection and release of the implant; the inner tube is combined with an inner core tube in the middle, and the inner core tube is used to pass the guide wire; based on the above functional requirements, the inner tube needs to have a certain degree of support, and at the same time, there is a strong bonding strength between the inner tube and the inner core tube to prevent the two from slipping during surgery. However, the bonding between the inner tube and the inner core tube has always been done by glue bonding, but the glue bonding method has some disadvantages; the glue cannot fill the gap between the two, so that there is a cavity between the inner tube and the inner core tube, and bacteria will remain in the cavity during sterilization; secondly, the existence of the cavity between the inner tube and the inner core tube reduces the tensile strength of the inner tube, and the inner tube is prone to bending and folding. When the inner tube is under pressure, the cavity of the inner tube will collapse; and the glue bonding process between the inner core tube and the inner tube is complicated and not suitable for mass production. Utility Model Content
[0003] The embodiments of the present application provide a tube body assembly of an interventional delivery device and an interventional delivery device. The combination between the guide wire tube and the first tube body is stable, which solves the problem of bacterial residue. The tensile strength is greatly improved compared to that of adhesive bonding, which greatly improves the anti-bending performance of the tube body assembly.
[0004] In a first aspect, an embodiment of the present application provides a tube body assembly of an interventional delivery device, the tube body assembly comprising a guide wire tube for a guide wire to pass through and a first tube body located outside the guide wire tube, the guide wire tube and the first tube body being an integrally formed structure; the first tube body has a first channel, the guide wire tube is passed through the first channel and is fused to the first tube body.
[0005] In the present solution, the guide wire tube is welded to the first tube body. During welding, the melting temperature of the first tube body is lower than that of the guide wire tube. The material after the first tube body is melted flows evenly at high temperature to fill the gap between the first tube body and the guide wire tube, thereby avoiding the formation of a cavity between the first tube body and the guide wire tube. This solves the problem of residual bacteria in the prior art using gluing. In addition, the bonding strength between the first tube body and the guide wire tube after welding is large, and the tensile strength is greatly improved compared to the gluing method, thereby greatly improving the anti-bending performance of the tube body assembly.
[0006] In some embodiments, the axis of the first channel is coaxially arranged with the axis of the first tube body.
[0007] In some embodiments, the first tube body has a functional channel, the functional channel penetrates the first tube body along the axial direction, and the functional channel and the first channel are independently arranged.
[0008] In the above technical solution, a functional channel is formed in the first tube body, and the functional channel is independently arranged with the first channel. The functional channel is used to meet the arrangement of instruments and / or pipes of the interventional delivery device.
[0009] In some embodiments, the number of functional channels is set to be several, and the several functional channels are independently arranged.
[0010] In this embodiment, the number of the functional channels is set to two, and the two functional channels are respectively located on two opposite sides of the first channel.
[0011] In some embodiments, an outer surface of the wire guide tube is provided with an anti-slip portion.
[0012] In the above technical solution, an anti-slip portion is formed on the outer surface of the wire guide tube, which can increase the contact area between the first tube body and the wire guide tube, reduce the generation of a gap between the first tube body and the wire guide tube, and increase the roughness of the outer surface of the wire guide tube, so that it can be better combined with the melted first tube body, with greater bonding strength and stronger integrity of the tube body assembly.
[0013] In some embodiments, the anti-slip portion includes anti-slip grooves and / or anti-slip protrusions.
[0014] In the above technical solution, the anti-slip portion is formed by the wire guide tube itself. The provision of anti-slip grooves and / or anti-slip protrusions on the wire guide tube can increase the roughness of the outer surface of the wire guide tube. The anti-slip grooves can be embedded in the first tube body, and the anti-slip protrusions can enable the wire guide tube to be embedded in the first tube body, thereby ensuring the bonding strength between the first tube body and the wire guide tube.
[0015] In some embodiments, the anti-slip portion is distributed on the outer circumference of the wire guide tube in at least one of a wavy shape, a spiral shape, or a straight shape.
[0016] In this embodiment, the anti-skid portion is distributed in a wave shape on the outer peripheral surface of the wire guide tube. It can be understood that the anti-skid portion includes an anti-skid groove and an anti-skid protrusion, and the anti-skid protrusion and the anti-skid groove are alternately arranged to form a wave-shaped anti-skid portion.
[0017] In the second aspect, an embodiment of the present application provides an interventional delivery device, which includes a second tube body and a tube body assembly of the interventional delivery device, wherein the second tube body is located on the outside of the first tube body, and the second tube body has a second channel extending along its axial direction, and the tube body assembly is movably disposed in the second channel of the second tube body along its axial direction.
[0018] By setting the second channel in the second tube body, the tube body assembly can be movably set in the second channel of the second tube body. By operating the handle in the interventional delivery device and utilizing the relative movement of the tube body assembly and the second tube body, the loading and release of the valve can be achieved.
[0019] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A schematic diagram of the structure of a pipe body assembly provided in some embodiments of the present application;
[0022] Figure 2 for Figure 1 A cross-sectional view of section AA of the middle tube assembly;
[0023] Figure 3 for Figure 1 a side view of the mid-tube assembly;
[0024] Figure 4 Side views of tube body assemblies provided in some other embodiments of the present application.
[0025] Icons: 10 - first tube body; 11 - first channel; 12 - functional channel; 20 - wire guide tube; 21 - anti-slip portion; 210 - anti-slip groove; 211 - anti-slip protrusion; 100 - tube body assembly. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0029] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] Example
[0032] In the related art, the first tube body and the guide wire tube in the catheter are generally connected and fixed by glue bonding, but there are some disadvantages in the glue bonding of the first tube body and the guide wire tube; for example, the glue cannot fill the gap between the two, so that there is a cavity between the first tube body and the guide wire tube, and bacteria will remain in the cavity during sterilization; secondly, the existence of the cavity between the first tube body and the guide wire tube reduces the tensile strength of the catheter, and the first tube body is prone to bending and folding. In addition, the glue bonding process of the first tube body and the guide wire tube is relatively complicated, the gluing efficiency is low, and it is not suitable for mass production.
[0033] For this reason, please see Figures 1 to 4 The embodiment of the present application provides a tube body assembly 100 of an interventional delivery device. The guide wire tube 20 in the tube body assembly 100 and the first tube body 10 have strong bonding stability, which solves the problem of bacterial residue. The tensile strength is greatly improved compared to that of adhesive bonding, which greatly improves the anti-bending performance of the tube body assembly 100.
[0034] Specifically, the tube body assembly 100 includes a guide wire tube 20 for the guide wire to pass through and a first tube body 10 located outside the guide wire tube 20, the guide wire tube 20 and the first tube body 10 are an integrally formed structure; the first tube body 10 has a first channel 11, the guide wire tube 20 is passed through the first channel 11 and is fused with the first tube body 10.
[0035] In the present solution, the guide wire tube 20 is welded to the first tube body 10. During the welding, the melting temperature of the first tube body 10 is lower than that of the guide wire tube 20. The material after the first tube body 10 is melted flows evenly at high temperature to fill the gap between the first tube body 10 and the guide wire tube 20, thereby avoiding the formation of a cavity between the first tube body 10 and the guide wire tube 20. This solves the problem of residual bacteria in the prior art using adhesive bonding. In addition, the bonding strength of the first tube body 10 and the guide wire tube 20 after welding is large, and the tensile strength is greatly improved compared to the adhesive bonding method, thereby greatly improving the anti-bending performance of the tube body assembly 100.
[0036] Among them, the material of the first tube body 10 can be Pebax tube, and the material of the wire guide tube 20 can be nickel titanium tube. The material of the first tube body 10 is a polymer material, and the melting temperature of the Pebax tube is lower than the melting temperature of the nickel titanium tube. Since the polymer material is a long chain structure, during the high temperature and high pressure extrusion process of the first tube body 10 and the wire guide tube 20, the long chain structure of the molecular scale will be embedded in the rough surface of the wire guide tube 20 to complete the filling, so that the first tube body 10 and the wire guide tube 20 are injection molded, and the bonding strength is large. In addition, the wire guide tube 20 can be coaxially arranged in the first tube body 10, or it can be non-coaxially arranged.
[0037] In some embodiments, the axis of the first channel 11 is coaxial with the axis of the first tube body 10 .
[0038] In some embodiments, the first tube body 10 has a functional channel 12, which runs through the first tube body 10 axially, and the functional channel 12 and the first channel 11 are independently arranged. The functional channel 12 is formed in the first tube body 10, and the functional channel 12 and the first channel 11 are independently arranged, and the functional channel 12 is used to meet the arrangement of instruments and / or pipes of the interventional delivery device.
[0039] The number of the functional channels 12 may be one or more, and the specific number of the functional channels 12 may be determined according to actual conditions.
[0040] In some embodiments, the number of the functional channels 12 is set to be several, and the several functional channels 12 are arranged independently of each other.
[0041] In this embodiment, the number of the functional channels 12 is set to two, and the two functional channels 12 are respectively located at two opposite sides of the first channel 11 .
[0042] In some embodiments, see Figure 4, the outer surface of the wire guide tube 20 is provided with an anti-skid portion 21. By forming the anti-skid portion 21 on the outer surface of the wire guide tube 20, the anti-skid portion 21 can increase the contact area between the first tube body 10 and the wire guide tube 20, reduce the generation of the gap between the first tube body 10 and the wire guide tube 20, and improve the roughness of the outer surface of the wire guide tube 20, so that it can be better combined with the melted first tube body 10, the bonding strength is greater, and the tube body assembly 100 has a stronger integrity.
[0043] In some embodiments, please refer to Figure 4 The anti-skid portion 21 includes an anti-skid groove 210 and / or an anti-skid protrusion 211. The anti-skid portion 21 is formed by the wire guide tube 20 itself. The anti-skid groove 210 and / or the anti-skid protrusion 211 on the wire guide tube 20 can increase the roughness of the outer surface of the wire guide tube 20. The anti-skid groove 210 can be embedded in the first tube body 10, and the anti-skid protrusion 211 can make the wire guide tube 20 embedded in the first tube body 10, thereby ensuring the bonding strength between the first tube body 10 and the wire guide tube 20.
[0044] Among them, the anti-slip part 21 can be distributed on the outer circumference of the wire guide tube 20 in various ways. The anti-slip part 21 can be distributed irregularly on the outer circumference of the wire guide tube 20, or the anti-slip part 21 can be wavy, spiral or straight on the outer circumference of the wire guide tube 20.
[0045] In some embodiments, the anti-slip portion 21 is distributed on the outer circumference of the wire guide tube 20 in at least one of a wave shape, a spiral shape, or a straight line shape.
[0046] In the present embodiment, the anti-skid portion 21 is distributed in a wave shape on the outer peripheral surface of the wire guide tube 20. It can be understood that the anti-skid portion 21 includes an anti-skid groove 210 and an anti-skid protrusion 211, and the anti-skid protrusion 211 and the anti-skid groove 210 are alternately arranged along the axial direction and / or circumferential direction of the wire guide tube 20, thereby forming a wave-shaped anti-skid portion 21.
[0047] An embodiment of the present application provides an interventional delivery device, which includes a second tube body and a tube body assembly 100 of the interventional delivery device. The second tube body is located on the outside of the first tube body 10. The second tube body has a second channel extending along its axial direction. The tube body assembly 100 is movably disposed in the second channel of the second tube body along its axial direction.
[0048] By setting the second channel in the second tube body, the tube body assembly 100 can be movably set in the second channel of the second tube body, and the loading and release of the valve can be achieved by operating the handle in the interventional delivery device and utilizing the relative movement of the tube body assembly 100 and the second tube body.
[0049] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.
[0050] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A tube assembly for an interventional delivery device, characterized in that: It comprises a guide wire tube for a guide wire to pass through and a first tube body located outside the guide wire tube, wherein the guide wire tube and the first tube body are an integrally formed structure; the first tube body has a first hole, the guide wire tube is passed through the first hole and is fused with the first tube body.
2. The tube assembly of the interventional delivery device according to claim 1, characterized in that: The axis of the first channel is coaxially arranged with the axis of the first tube body.
3. The tube assembly of the interventional delivery device according to claim 1, characterized in that: The first tube body has a functional channel, and the functional channel penetrates the first tube body along the axial direction. The functional channel and the first channel are independently arranged.
4. The tube assembly of the interventional delivery device according to claim 3, characterized in that: The number of the functional channels is set to be several, and the several functional channels are independently arranged.
5. The tube assembly of the interventional delivery device according to any one of claims 1 to 4, characterized in that: The outer surface of the wire guide tube is provided with an anti-slip portion.
6. The tube assembly of the interventional delivery device according to claim 5, characterized in that: The anti-slip portion includes an anti-slip groove and / or an anti-slip protrusion.
7. The tube assembly of the interventional delivery device according to claim 5, characterized in that: The anti-slip portion is distributed on the outer circumferential surface of the wire guide tube in at least one of a wave shape, a spiral shape or a straight line shape.
8. An interventional delivery device, characterized in that: The invention comprises a second tube body and a tube body assembly of an interventional delivery device according to any one of claims 1 to 7, wherein the second tube body is located outside the first tube body, the second tube body has a second channel extending along its axial direction, and the tube body assembly is movably arranged in the second channel of the second tube body along its axial direction.