A wire shaping tool for a basket

Abstract

The application discloses a wire shaping tool for a mesh basket, which comprises a base, a pressing plate, an outer cover and a shaping assembly. The outer cover is a cylindrical barrel penetrating in the axial direction. The shaping assembly is located in the outer cover. The base is provided with a containing groove containing the outer cover. The base at one end of the containing groove is provided with a wire outlet groove. The pressing plate is pressed on the wire outlet groove. The shaping assembly is a plurality of mortise and tenon units formed by axially splicing mortise and tenon structures. The outer circumferential surface of each mortise and tenon unit is provided with a spiral winding groove for winding the wire. One end of the wire passes through the wire outlet groove at one end of the outer cover. The other end of the wire extends out of the other end of the outer cover. The shaping assembly for winding the wire adopts the mortise and tenon structure to splice and form, so that the length and the radial width of each mortise and tenon unit can be adjusted by disassembling or splicing, the shaping process of the mesh basket assembly of different sizes can be met, a mold does not need to be re-made, the production cost is lower, and the application flexibility is better.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a wire mesh shaping tool. Background Technology

[0002] Existing wire mesh shaping fixtures all use fixed molds for winding and shaping. When the length or spiral radius of the wire mesh changes, the entire mold needs to be replaced. When producing a large number of models, a variety of molds are required, resulting in high production costs. Summary of the Invention

[0003] To address the technical problem that existing wire mesh shaping fixtures use fixed molds for winding and shaping, requiring a large variety of molds and resulting in high production costs, this invention provides a wire mesh shaping fixture to solve the above problems.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a wire shaping fixture, including a base, a pressure plate, an outer cover and a shaping component. The outer cover is an axially penetrating cylindrical barrel. The shaping component is located inside the outer cover. The base has a receiving groove for accommodating the outer cover. A wire outlet groove is provided on the base at one end of the receiving groove. The pressure plate presses on the wire outlet groove.

[0005] The shaping component consists of multiple mortise and tenon units formed by axial splicing using a mortise and tenon structure. Each mortise and tenon unit has a spiral winding groove on its outer circumference for winding the thread. One end of the thread passes through the outlet groove located at one end of the outer cover, and the other end of the thread extends out from the other end of the outer cover.

[0006] Furthermore, the mortise and tenon unit includes a central shaft and several connecting bodies connected end to end in sequence. The connecting bodies have shaft holes through which the central shaft passes. The outer diameter of each mortise and tenon unit is equal. The mortise and tenon units are arranged in a circular array so that the center connection of each mortise and tenon unit forms a regular polygon, and the maximum distance from the outer peripheral surface of each mortise and tenon unit to the center of the shaping component is equal.

[0007] Furthermore, each connector includes a tubular body and an arc-shaped protrusion on the outer circumference of the tubular body. The surface of the arc-shaped protrusion has a groove. Both ends of the tubular body have several axially protruding tenons. A slot is formed between adjacent tenons. The tenons of adjacent connectors are inserted into the slots. The grooves on the surface of each connector are connected in sequence to form a spiral winding groove.

[0008] Furthermore, the connector is divided into end connectors and intermediate connectors. The end connectors are located at both ends of the axial direction of the mortise and tenon unit. Multiple intermediate connectors are provided and located between two end connectors. The arc-shaped protrusions on two adjacent end connectors at the same end of the mortise and tenon unit are in tangential contact. The end connectors of several mortise and tenon units are tangential to each other in sequence and form a channel in the middle.

[0009] Furthermore, the arc-shaped protrusion on the intermediate connector is a fan-shaped structure, and a groove is provided on the arc-shaped protrusion.

[0010] Furthermore, one side of the arc-shaped protrusion on the end connector is a plane, and the other side is composed of a first contact surface, an arc surface, and a second contact surface. The first contact surface is connected to the tubular body, and the arc surface is formed by rounding the corners between the first and second contact surfaces. The second contact surface is connected to the plane. Between adjacent mortise and tenon units, the second contact surface is in tangential contact with the first contact surface, and the arc surfaces of different mortise and tenon units form a channel.

[0011] Furthermore, the arc-shaped protrusion of the end connector is provided with two grooves, which allow the threads in the mortise and tenon unit where the end connector is located and the adjacent mortise and tenon unit to pass through, respectively.

[0012] Furthermore, the mortise and tenon unit is provided in three or more parts.

[0013] Furthermore, a baffle is connected to one end of the outer cover facing the wire outlet groove, and the baffle is provided with a wire passage hole for the wire to pass through.

[0014] Furthermore, the outer end face of the arc-shaped protrusion of the end connector is chamfered.

[0015] The beneficial effects of this invention are:

[0016] The wire shaping fixture of the present invention is formed by mortise and tenon structure for winding the wire. The length and radial width of each mortise and tenon unit can be adjusted by disassembly or splicing to meet the shaping process of wire basket components of different sizes. It does not require the re-making of molds, resulting in lower production costs and better application flexibility. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is an exploded view of a specific embodiment of the wire mesh shaping fixture described in this invention;

[0019] Figure 2 This is a side view of a specific embodiment of the wire mesh shaping fixture described in this invention;

[0020] Figure 3This is an exploded view of the mortise and tenon unit in this invention;

[0021] Figure 4 This is the front view of the mortise and tenon unit in this invention;

[0022] Figure 5 This is a diagram showing the state of the wire mesh inside the surgical instruments;

[0023] Figure 6 This is a diagram showing the state of the basket wire after it has been released from the surgical instruments;

[0024] Figure 7 This is a perspective view of the intermediate connector in this invention;

[0025] Figure 8 This is a front view of the intermediate connecting body in this invention;

[0026] Figure 9 This is a perspective view of the end connector in this invention;

[0027] Figure 10 This is a perspective view of a specific embodiment of the shaping component in this invention;

[0028] Figure 11 yes Figure 10 The right view;

[0029] Figure 12 yes Figure 11 Enlarged view of point a in the middle;

[0030] Figure 13 This is a side view of the shaped component when it is composed of four mortise and tenon units;

[0031] Figure 14 This is a side view of the shaped component when it is composed of five mortise and tenon units;

[0032] Figure 15 This is a side view of the shaped component when it is composed of six mortise and tenon units.

[0033] In the diagram, 1. Base, 101. Receiving groove, 102. Platform, 103. Cable outlet groove, 2. Pressure plate, 3. Outer cover, 4. Shaping component, 401. Mortise and tenon unit, 4011. Central shaft, 4012. End connector, 4013. Intermediate connector, 5. Spiral winding groove, 6. Shaft hole, 7. Tubular body, 701. Tenon, 702. Slot, 8. Groove, 9. Basket wire, 901. Hydrophilic guide head, 10. Channel, 11. Arc protrusion, 12. First contact surface, 13. Arc surface, 14. Second contact surface, 15. Baffle, 16. Cable hole, 17. Chamfer, 18. Wire, 19. Sheath tube. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] like Figures 1-3 As shown, a wire mesh shaping fixture includes a base 1, a pressure plate 2, an outer cover 3, and a shaping component 4. The outer cover 3 is an axially penetrating cylindrical barrel. The shaping component 4 is located inside the outer cover 3. The outer cover 3 limits the shaping component 4 to maintain a stable shape. The base 1 has a receiving groove 101 for accommodating the outer cover 3. The outer cover 3 is placed in the receiving groove 101 to prevent the outer cover 3 from rolling.

[0036] The shaping component 4 consists of multiple mortise and tenon units 401 formed by axial splicing using a mortise and tenon structure. Each mortise and tenon unit 401 has a spiral winding groove 5 on its outer circumferential surface for winding the wire 18. The base 1 located at one end of the receiving groove 101 has a wire outlet groove 103. The pressure plate 2 presses on the wire outlet groove 103, which can fix one end of the wire 18 in the wire outlet groove 103. The other end of the wire 18 extends out from the other end of the outer cover 3 after being wound along the spiral winding groove 5 on the shaping component 4.

[0037] The wire 18 is made of nickel-titanium alloy wire with shape memory function. After the wire 18 is wound, it is placed in the base 1 for a period of time to complete the shaping of the basket wire 9. Figure 5 As shown, the wire mesh 9 is stored inside the sheath tube 19 when not in use. When the wire mesh 9 is released, it automatically unfolds into its wound shape (as shown). Figure 6 (As shown).

[0038] This invention employs a mortise and tenon structure for axial splicing. Different lengths of mortise and tenon units 401 can be spliced ​​according to actual length requirements, or different sizes of mortise and tenon structures can be selected for splicing according to radial width requirements. The mortise and tenon units 4011 of each mortise and tenon unit 401 are parallel to each other and each is wrapped with a thread 18. The more threads 18 there are, the smaller the mesh size (e.g., ...). Figure 6 The diagram shows the expanded wire mesh 9. (When the number of wires 18 is small, the mesh size is large.) Therefore, the mesh size can be adjusted by changing the number of tenon units 401. Compared with conventional fixed molds, this invention has a wider range of applications and is more flexible in use.

[0039] Example 1

[0040] A wire basket shaping fixture includes a base 1, a pressure plate 2, an outer cover 3, and a shaping component 4. The base 1 is rectangular in shape. A receiving groove 101 and a wire outlet groove 103 are located on the top of the base 1. One end of the receiving groove 101 has a platform 102, and the wire outlet groove 103 is located on the platform 102. The pressure plate 2 is fixed to the platform 102 by screws. In this embodiment, the head end of the wire basket 9 is located in the wire outlet groove 103, and the tail end of the wire basket 9 (that is, one end of the hydrophilic guide head 901) extends out from the other end of the outer cover 3.

[0041] The shaping component 4 consists of multiple mortise and tenon units 401 formed by axial splicing using a mortise and tenon structure. Each mortise and tenon unit 401 includes a mortise and tenon unit 4011 and several connecting bodies connected end to end. Each connecting body has a shaft hole 6 through which the mortise and tenon unit 4011 passes. The mortise and tenon unit 401 passes through each connecting body axially, improving the connection strength of the connecting bodies. The outer diameter of each mortise and tenon unit 401 is equal, and the mortise and tenon units 401 are arranged in a circular array. The outer surfaces of adjacent mortise and tenon units 401 abut against each other. The circumferentially arranged mortise and tenon units 401 can be located exactly inside the outer cover 3 and tangent to the inner circumferential surface of the outer cover 3, thereby forming a stable shaping component 4 within the outer cover 3.

[0042] To ensure structural stability, the number of mortise and tenon units 401 is preferably three or more. After the mortise and tenon units 401 are arranged in a circular array, the centers of each mortise and tenon unit 401 can form a regular polygon, such as... Figure 13 As shown, when four mortise and tenon units 401 are set, the center lines of each mortise and tenon unit 401 can form a regular quadrilateral, such as... Figure 14 As shown, when five mortise and tenon units 401 are set, the center lines of each mortise and tenon unit 401 can form a regular pentagon; as Figure 15 As shown, when six mortise and tenon units 401 are provided, the center lines of each mortise and tenon unit 401 can form a regular hexagon, and so on. At the same time, in each figure, the maximum distance from the center of the shaping component 4 to the outer peripheral surface of each mortise and tenon unit 401 is also equal, and can all be tangent to the outer cover 3, thereby stably limiting its position within the outer cover 3. This embodiment describes the shaping component 4 composed of four mortise and tenon units 401 as an example.

[0043] The connector may, but is not limited to, adopt the following structure:

[0044] like Figures 7-10As shown, the connector includes a tubular body 7 and an arc-shaped protrusion 11 located on the outer periphery of the tubular body 7. The surface of the arc-shaped protrusion 11 has a groove 8 for passing through the wire 18. The two ends of the groove 8 extend to the edge of the arc-shaped protrusion 11 for docking with the groove 8 on the adjacent connector. The two ends of the tubular body 7 each have a plurality of axially protruding tenons 701. A slot 702 is formed between adjacent tenons 701. The tenons 701 of adjacent connectors are inserted into the slots 702. The grooves 8 on the surface of each connector are connected in sequence to form a spiral winding groove 5.

[0045] In this invention, the abutment of adjacent mortise and tenon units 401 is mainly achieved by connecting bodies located at both ends of the mortise and tenon unit 401. For ease of description, the connecting bodies are divided into end connecting bodies 4012 and intermediate connecting bodies 4013. The end connecting bodies 4012 are located at both axial ends of the mortise and tenon unit 401, and multiple intermediate connecting bodies 4013 are provided and located between two end connecting bodies 4012. The arc-shaped protrusions 11 on two adjacent end connecting bodies 4012 located at the same end of the mortise and tenon unit 401 are in tangential contact, and the end connecting bodies 4012 of several mortise and tenon units 401 are sequentially tangential and form a channel 10 in the middle. Figures 10-12 As shown, at the end of the shaping component 4, the arc-shaped protrusions 11 of the four end connectors 4012 are in sequential contact and form a channel 10 in the middle for the thread 18 to pass through. The center of the channel 10 is the center of the shaping component 4.

[0046] Because the thread 18 needs to converge and finish at both ends of the mortise and tenon unit 401, the structure of the connectors at both ends is slightly different from that of the connector in the middle. Specifically, the difference is as follows: Figure 7 As shown, the arc-shaped protrusion 11 on the intermediate connector 4013 has a fan-shaped structure, and a groove 8 is provided on the arc-shaped protrusion 11. The side parts of the fan-shaped structures on two adjacent intermediate connectors 4013 are fitted together, and the grooves 8 on adjacent intermediate connectors 4013 are connected through the fitting part (e.g., Figure 4 and Figure 10 As shown). Figure 9 As shown, the arc-shaped protrusion 11 of the end connector 4012 is provided with two grooves 8. The two grooves 8 are respectively for the mortise and tenon unit 401 where the end connector 4012 is located and the thread 18 in the adjacent mortise and tenon unit 401 to pass through. The two grooves 8 extend in different directions, and the two thread 18 extend out from the two grooves 8 respectively.

[0047] One side of the arc-shaped protrusion 11 on the end connector 4012 is a flat surface, which partially fits against the side of the arc-shaped protrusion 11 on the adjacent intermediate connector 4013. The other side is composed of a first contact surface 12, an arc surface 13, and a second contact surface 14 (e.g., Figure 9As shown), the first contact surface 12 is connected to the tubular body 7, and the first contact surface 12 and the second contact surface 14 are rounded to form an arc surface 13. The second contact surface 14 is connected to the plane. Between adjacent mortise and tenon units 401, the second contact surface 14 is in tangential contact with the first contact surface 12, and the arc surfaces 13 of different mortise and tenon units 401 form a channel 10. Figure 10 As shown, the spiral winding grooves 5 of the four mortise and tenon units 401 have the same spiral direction. The end connectors 4012 of the four mortise and tenon units 401 converge and contact at the center (only one end is shown in the figure, the other end has a similar structure), and the spiral directions at the same point are different. This makes the arc protrusions 11 of the middle connector 4013 of the four mortise and tenon units 401 on the same cross section staggered. The arc surface 13 is formed by rounding the corners between the first contact surface 12 and the second contact surface 14. Therefore, the maximum thickness of the arc protrusions 11 of the end connectors 4012 is less than the maximum thickness of the arc protrusions 11 of the middle connectors 4013. This allows the arc protrusions 11 of the four end connectors 4012 to converge at the center. However, the maximum radial width D1 of the arc protrusions 11 of the end connectors 4012 and the maximum radial width D2 of the arc protrusions 11 of the middle connectors 4013 are the same, ensuring that the winding radius of the wire 18 is consistent.

[0048] Example 2

[0049] Based on Embodiment 1, the outer cover 3 is connected to a baffle 15 at one end facing the wire outlet groove 103. The baffle 15 is provided with a wire passage hole 16 for the wire 18 to pass through. The wire passage hole 16 can initially position the wire 18, so that the wire 18 can better transition between the shaping component 4 and the wire outlet groove 103.

[0050] In a further configuration, the outer end face of the arc-shaped protrusion 11 of the end connector 4012 is provided with a chamfer 17. The chamfer 17 makes the opening of the channel 10 larger, the wire 18 is easier to extend, and the wire 18 will not be worn due to the presence of the end edge.

[0051] In the description of this invention, it should be understood that the terms "center", "width", "thickness", "inner", "outer", "axial", "radial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in the description of this invention, unless otherwise stated, "a plurality of" or "several" means two or more.

[0053] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0054] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A wire mesh shaping fixture, characterized in that: It includes a base (1), a pressure plate (2), an outer cover (3) and a shaping component (4). The outer cover (3) is an axially penetrating cylindrical barrel. The shaping component (4) is located inside the outer cover (3). The base (1) has a receiving groove (101) for receiving the outer cover (3). The base (1) located at one end of the receiving groove (101) is provided with a wire outlet groove (103). The pressure plate (2) presses on the wire outlet groove (103). The shaping component (4) is a plurality of mortise and tenon units (401) formed by axial splicing using a mortise and tenon structure. Each mortise and tenon unit (401) has a spiral winding groove (5) on its outer peripheral surface for winding the wire (18). One end of the wire (18) passes through the wire outlet groove (103) located at one end of the outer cover (3), and the other end of the wire (18) extends out from the other end of the outer cover (3). The mortise and tenon unit (401) includes a central shaft (4011) and a plurality of connecting bodies connected end to end. The connecting bodies have shaft holes (6) through which the central shaft (4011) passes. Each of the tenon and mortise units (401) has an equal outer diameter. The tenon and mortise units (401) are arranged in a circular array so that the centers of each tenon and mortise unit (401) are connected to form a regular polygon, and the maximum distance from the outer peripheral surface of each tenon and mortise unit (401) to the center of the shaping component (4) is equal. Each connector includes a tubular body (7) and an arc-shaped protrusion (11) on the outer peripheral surface of the tubular body (7). The surface of the arc-shaped protrusion (11) has a groove (8). Both ends of the tubular body (7) have several axially protruding tenons (701). A slot (702) is formed between adjacent tenons (701). The tenons (701) of adjacent connectors are inserted into the slots (702). The grooves (8) on the surface of each connector are connected in sequence to form a spiral winding groove (5). The connector is divided into an end connector (4012) and an intermediate connector (4013). The end connector (4012) is located at the tenon and mortise unit (401). At both ends of the axial direction of 01), the intermediate connecting body (4013) is provided in multiple ways and is located between the two end connecting bodies (4012); the arc-shaped protrusions (11) on the two adjacent end connecting bodies (4012) at the same end of the mortise and tenon unit (401) are in tangential contact, and the end connecting bodies (4012) of the several mortise and tenon units (401) are tangential in sequence and form a channel (10) in the middle; the arc-shaped protrusion (11) on the intermediate connecting body (4013) is a fan-shaped structure, and a groove (8) is provided on the arc-shaped protrusion (11); one side of the arc-shaped protrusion (11) on the end connecting body (4012) is a plane, and the other side is composed of a first contact surface (12), an arc surface (13) and a second contact surface (14). The first contact surface (12) is connected to the tubular body (7), and the first contact surface (12) and the second contact surface (14) are rounded to form an arc surface (13). The second contact surface (14) is connected to the plane. Between adjacent mortise and tenon units (401), the second contact surface (14) is in tangential contact with the first contact surface (12), and the arc surfaces (13) of different mortise and tenon units (401) form a channel (10).

2. The wire mesh shaping fixture according to claim 1, characterized in that: The arc-shaped protrusion (11) of the end connector (4012) is provided with two grooves (8), and the two grooves (8) are respectively for the mortise and tenon unit (401) where the end connector (4012) is located and the thread (18) in the adjacent mortise and tenon unit (401) to pass through.

3. The wire mesh shaping fixture according to claim 1, characterized in that: The mortise and tenon unit (401) is provided in three or more parts.

4. The wire mesh shaping fixture according to claim 1, characterized in that: The outer cover (3) is connected to a baffle (15) at one end facing the wire outlet groove (103), and the baffle (15) is provided with a wire hole (16) for the wire (18) to pass through.

5. The wire mesh shaping fixture according to claim 1, characterized in that: The outer end face of the arc-shaped protrusion (11) of the end connector (4012) is provided with a chamfer (17).

Images