Guide wire tube and assembly for interventional operation and conveying system
The tight structure formed by spiral coiling of wire material solves the problem of high cost of existing wire guide tubes, improves structural strength and stability, simplifies production processes, reduces costs, and is suitable for wire guide tubes in interventional surgery and conveying system.
Patent Information
- Application Number
- CN202420043614.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-08
AI Technical Summary
The production cost of existing guidewire tubes for interventional surgery is relatively high, mainly because they are composite braided structures, which leads to high processing difficulty and high cost.
The pipe body structure formed by spiral coiling of wire is adopted, and two adjacent wire rings are abutted against each other in the axial direction to form a tight spiral coiling structure, providing thrust and flexibility and reducing production costs.
By simplifying the production process, the production cost of the guide tube is reduced, while improving structural strength and stability, reducing the problem of blood outflow, and is suitable for guide tubes and delivery systems in interventional surgery.
Smart Images
Figure CN222265902U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical device technology, and in particular to a guide wire tube, assembly and delivery system for interventional surgery. Background Art
[0002] The function of the guide wire tube is to advance along the guide wire and provide the delivery system with guide wire tracking performance (guide wire tracking performance: the ability of the delivery system to move along the guide wire). Since the guide wire is restricted by the human tissue structure in the body and is in a tortuous state, the guide wire tube needs to have pushability. Currently, the commonly used guide wire tubes are composite braided tubes. However, the composite braided tube is a multi-layer structure. The problem with it as a guide wire tube is that it is difficult to process, resulting in relatively high costs. Utility Model Content
[0003] The technical problem to be solved by the present application is to provide a guide wire tube, assembly and delivery system for interventional surgery, which can reduce the production cost of the guide wire tube.
[0004] In order to solve the above technical problems, this application adopts the following technical solutions:
[0005] In a first aspect, the present application provides a guide wire tube for interventional surgery, comprising: the guide wire tube is a tube body formed by spirally winding a wire material.
[0006] As an implementation mode, two adjacent wire loops formed by the spiral winding of the wire material abut against each other in the axial direction of the wire guide tube.
[0007] As an implementation manner, the wire material is a metal wire.
[0008] As an implementation manner, the metal wire is a spring wire.
[0009] As an implementation mode, the radial dimension of the wire is not less than 0.1 mm.
[0010] As an implementation manner, the radial cross-section of the wire is circular or quadrilateral.
[0011] As an implementation mode, a guide head is provided at one end of the tube body.
[0012] In a second aspect, the present application provides a guidewire tube assembly for interventional surgery, comprising the guidewire tube for interventional surgery provided in the first aspect; and a guidewire, wherein the guidewire is inserted into a tube body.
[0013] In a third aspect, the present application provides a delivery system for interventional surgery, comprising the guidewire tube assembly for interventional surgery provided in the second aspect; and a handle connected to the proximal end of the guidewire tube.
[0014] As an embodiment, the delivery system for interventional surgery includes an outer tube connected to the handle, and an inner tube assembly extending inside the outer tube and movable relative to the outer tube; the inner tube assembly includes a first inner tube, a second inner tube extending inside the first inner tube, and the guide wire tube extends inside the second inner tube.
[0015] The technical solution of this application has the following beneficial effects:
[0016] 1. The guide wire tube for interventional surgery is a tube body formed by a spirally wound structure of a wire material. The spirally wound structure enables the tube body itself to have thrust. Compared with the composite braided tube formed by a multi-layer structure in the prior art, the guide wire tube of the present application only enables the tube body itself to have thrust through the spirally wound structure. The preparation process is simple, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application 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.
[0018] Figure 1 A schematic diagram of the structure of a guide wire tube for interventional surgery provided in an embodiment of the present application;
[0019] Figure 2 A schematic diagram of the structure of a guide wire tube assembly for interventional surgery provided in an embodiment of the present application;
[0020] Figure 3 A schematic diagram of the structure of the conveying system provided in an embodiment of the present application;
[0021] Figure 4 This is a schematic diagram of the structure of different specifications of the guide wire tubes for interventional surgery provided in the embodiments of the present application. Icon: 1-guide wire tube; 11-wire material; 12-guide head; 2-guide wire; 3-handle; 4-outer tube; 5-first inner tube. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.
[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0024] like Figure 1 As shown, on the first aspect, the embodiment of the present application provides a guide wire tube 1 for interventional surgery, which is a tube body formed by spirally winding a wire material 11. The spiral winding structure allows the tube body itself to withstand thrust, so that the guide wire tube 1 has a driving force. In addition, the guide wire tube 1 in the embodiment of the present application only needs to be made into a spirally wound structure by the wire material 11. Compared with the composite braided tube in the prior art which is composited by a multi-layer structure, the preparation process of the guide wire tube 1 in the embodiment of the present application is simple, thereby reducing the production cost.
[0025] Optionally, the wire guide tube 1 can be made of one wire material 11 or multiple wire materials 11. As a preferred implementation, the wire guide tube 1 in the embodiment of the present application is made of one wire material 11, thereby improving the structural stability of the wire guide tube 1.
[0026] like Figure 1 and 2 As shown, as an embodiment, two adjacent wire loops formed by the spiral winding of the wire material 11 abut against each other in the axial direction of the wire guide tube 1, so that the two adjacent wire loops of the wire guide tube 1 as a whole are tightly fitted in the axial direction of the wire guide tube 1, thereby improving the structural strength of the wire guide tube 1. In addition, the two adjacent wire loops abut against each other in the axial direction of the wire guide tube 1 can also make the tube wall as a whole have no gaps, which can reduce the problem of blood flowing out from the tube body to the tube wall.
[0027] As an implementation manner, the wire material 11 is a metal wire, so as to improve the structural strength of the wire guide tube 1.
[0028] As an implementation mode, the metal wire is a spring wire, so that the wire guide tube 1 has bending flexibility and shape memory, which can further reduce the production cost of the wire guide tube 1.
[0029] In the prior art, the wire guide tube also needs to have bending flexibility and shape memory, while the wire guide tube 1 in the embodiment of the present application adopts spring wire, which is then designed into a spiral winding manner, and at the same time, two adjacent wire coils abut against each other in the axial direction of the wire guide tube 1, so that the wire guide tube 1 is a spring tube with a tight spiral winding structure, and the spring tube itself has flexibility and shape memory. Therefore, the wire guide tube 1 adopts a spring ring, which can also provide flexibility and shape memory for the wire guide tube 1. At the same time, the spring tube can also withstand thrust. In this way, the wire guide tube 1 in the embodiment of the present application adopts a spring tube, which can reduce the processing difficulty and also reduce the production cost compared to the composite braided tube in the prior art.
[0030] In the prior art, wire guide tubes also use steel cable tubes or nickel-titanium tubes. However, the problem with the above-mentioned pipes is that the cost of raw materials is relatively high. The wire guide tube 1 of the embodiment of the present application uses a spring tube. The main raw material of the spring tube is spring steel. Compared with other raw materials including steel cable tubes, nickel-titanium tubes, composite braided tubes, etc., the cost of raw materials will also be reduced. Therefore, the use of spring tubes for the wire guide tube 1 will correspondingly reduce the production cost in terms of raw materials and production processes.
[0031] As an implementation mode, the radial dimension of the wire 11 is not less than 0.1 mm, that is, when the wire 11 is a spring wire, its radial dimension can be 0.1 mm, so that the wall of the guide wire tube 1 becomes thinner, and the internal space of the guide wire tube 1 is further enlarged, which can free up more space for implants, such as balloons.
[0032] Of course, the radial dimension of the wire 11 can also be greater than 0.1 mm.
[0033] Optionally, when the radial cross-section of the wire 11 is a quadrilateral, if the cross-section is a square, the radial dimension of not less than 0.1 mm means that the length of the side is not less than 0.1 mm; if the cross-section is a rectangle, the radial dimension of not less than 0.1 mm means that the length of the shortest side, i.e. the short side of the rectangle, is not less than 0.1 mm.
[0034] like Figure 1 As shown, as an embodiment, the radial cross-section of the wire 11 is circular, that is, the wire 11 is a columnar structure in a straight state, so that the wire guide tube 1 is easy to bend and easy to turn.
[0035] Of course, if Figure 4 As shown, the radial cross-section of the wire 11 may also be a quadrilateral, that is, the wire 11 is a prismatic structure in a straight state, which increases the contact area between two adjacent wire loops and improves the stability and load-bearing capacity of the wire guide tube 1.
[0036] As a possible implementation, the radial cross-section of the wire 11 may also be a pentagon or a hexagon.
[0037] Optionally, the radial cross-section of the wire 11 is circular or quadrilateral, thereby increasing the different structural shapes of the wire guide tube 1 and improving the adaptability of the product.
[0038] Of course, when the radial cross-section of the wire material 11 is circular, the wire guide tube 1 is more likely to bend when turning, and when the radial cross-section of the wire material 11 is quadrilateral, the structural strength of the wire guide tube 1 can be improved.
[0039] like Figure 2As shown, as an embodiment, a guide head 12 is provided at one end of the tube body. The guide head 12 is a conical structure, and the end portion of the guide head 12 has a streamlined shape, which can avoid scratching the inner wall of the blood vessel and is also conducive to guiding the entire guide wire tube 1 to advance along the blood vessel.
[0040] like Figure 2 As shown, in the second aspect, an embodiment of the present application provides a guidewire tube assembly for interventional surgery, including the guidewire tube 1 for interventional surgery provided in the first aspect; and also including a guidewire 2, which is inserted into the cavity of the tube body.
[0041] like Figure 3 As shown, in the third aspect, an embodiment of the present application provides a delivery system for interventional surgery, including the guide wire tube assembly for interventional surgery provided in the second aspect, and also including a handle 3, the handle 3 is connected to the proximal end of the guide wire tube 1, and the guide wire tube 1 is inserted into the blood vessel through the guidance of the guide wire 2.
[0042] like Figure 3 As shown, as an embodiment, the delivery system for interventional surgery includes an outer sleeve 4 connected to a handle 3, and an inner tube assembly extending in the outer sleeve 4 and movable relative to the outer sleeve 4; the inner tube assembly includes a first inner tube 5, and a second inner tube extending in the first inner tube 5; a guide wire tube 1 extends in the second inner tube, and one end is fixed at the position of a guide head 12, and the other end extends and is fixed to the proximal end of the handle 3. The outer sleeve 4 provides stable support for the inner tube assembly; the first inner tube 5 and the second inner tube are both connected to the handle 3, the outer sleeve 4 is sleeved on the outer circumference of the first inner tube 5, the first inner tube 5 is sleeved on the outer circumference of the second inner tube, the second inner tube extends in the first inner tube 5, the first inner tube 5 and the second inner tube both extend in the outer sleeve 4 and can synchronously rotate circumferentially relative to the guide wire tube 1, an accommodating space for accommodating a heart valve prosthesis is provided between the first inner tube 5 and the second inner tube, when the first inner tube 5 and the second inner tube synchronously rotate circumferentially relative to the outer sleeve 4, the first inner tube 5 and the second inner tube clamp the heart valve prosthesis and synchronously rotate circumferentially relative to the guide wire tube 1 to achieve circumferential positioning of the heart valve prosthesis; after the heart valve prosthesis is circumferentially positioned, the heart valve prosthesis is released to improve the accuracy of the delivery system for the implantation position of the heart valve prosthesis.
[0043] Optionally, the guide wire tube 1 can be fixed at the proximal end position in the handle 3 by gluing.
[0044] Optionally, the second inner tube and the handle 3 are also relatively fixed. A transmission component is provided in the handle 3, and the transmission component is fixedly connected to the first inner tube 5. The transmission component can move axially relative to the handle 3 through the clamping of the handle 3, thereby driving the first inner tube 5 to move axially relative to the second inner tube, and finally realizing the release and recovery of the valve.
[0045] Optionally, a control mechanism is provided on the handle 3 , which can control the axial movement of the transmission member in the handle 3 relative to the handle 3 .
[0046] Optionally, the handle 3 includes a shell, the shell includes a first shell and a second shell, the second shell can rotate circumferentially relative to the first shell, the outer sleeve 4 is fixedly connected to the first shell, and the first inner tube 5 is fixedly connected to the second shell through a connecting piece. When the second shell rotates circumferentially relative to the first shell, it can synchronously drive the first inner tube 5 to rotate relative to the second inner tube.
[0047] The above description is only an embodiment of the present application and is not intended to limit the protection scope of 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.
[0048] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
Claims
1. A guide wire tube for interventional surgery, characterized in that: include: The wire guide tube is a tube body formed by spirally winding wire material; The tube body can pass through a guide wire; A guide head is arranged at one end of the tube body, and the other end of the tube body is used for connecting a handle.
2. The guide wire tube for interventional surgery according to claim 1, characterized in that: Two adjacent wire loops formed by the spiral winding of the wire material abut against each other in the axial direction of the wire guide tube.
3. The guide wire tube for interventional surgery according to claim 2, characterized in that: The wire material is a metal wire.
4. The guide wire tube for interventional surgery according to claim 3, characterized in that: The metal wire is a spring wire.
5. The guide wire tube for interventional surgery according to claim 4, characterized in that: The radial dimension of the wire is not less than 0.1 mm.
6. The guide wire tube for interventional surgery according to any one of claims 1 to 4, characterized in that: The radial cross section of the wire is circular or quadrilateral.
7. A guide wire tube assembly for interventional surgery, characterized in that: A guide wire tube for interventional surgery comprising any one of claims 1 to 6; A guide wire is inserted into the tube body.
8. A delivery system for interventional surgery, characterized in that: It comprises the guide wire tube assembly for interventional surgery as claimed in claim 7; A handle is connected to the proximal end of the guide wire tube.
9. The delivery system for interventional surgery according to claim 8, characterized in that: The delivery system for interventional surgery includes an outer tube connected to the handle, and an inner tube assembly extending inside the outer tube and movable relative to the outer tube; The inner tube assembly comprises a first inner tube and a second inner tube extending inside the first inner tube, and the guide wire tube extends inside the second inner tube.