Auxiliary tool for cutting metal support

Abstract

The utility model discloses an auxiliary tool for cutting a metal support, which comprises a cutting base, an auxiliary tool seat and an adjustable tool, the auxiliary tool seat is fixedly connected with the cutting base, and the adjustable tool is mounted on the auxiliary tool seat; the auxiliary tool seat is internally provided with a channel for allowing the support to pass through, the adjustable tool is of a cylindrical structure, a plurality of fixing pieces are distributed in the adjustable tool in the circumferential direction, any fixing piece is connected with the inner wall of the adjustable tool through an elastic connecting piece, and an adjusting piece is fixedly connected to the auxiliary tool seat. The multiple fixing pieces move towards or away from the center shaft of the adjustable tool. The adjustable tool is arranged, the distance between the fixing pieces can be adjusted by rotating the adjustable tool, therefore, nickel-titanium pipes of various specifications can be clamped, the application range is wider, adjustment is very convenient, and the cutting efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of tooling fixtures, in particular to an auxiliary tooling for cutting metal brackets. Background Art

[0002] The main body of an intracranial thrombectomy stent is commonly made of nickel-titanium tubes of varying sizes. Nickel-titanium metal has excellent machinability and memory, as well as good biocompatibility and high elasticity. However, cutting nickel-titanium tubes primarily relies on laser cutting machines. Different cutting tools are required for each size of nickel-titanium tube, wasting significant time debugging the equipment.

[0003] At present, the main method for cutting the intracranial thrombectomy stent is to use a femtosecond cutting machine for cutting. Figure 1 As shown, it mainly includes a cutting tool base and an auxiliary cutting tool. The cutting tool base is a universal mold that provides support for the auxiliary cutting tool. The nickel-titanium tube enters from the cutting tool base and passes through the auxiliary support tool. The hollow size of the auxiliary support tool head must be the same as the outer diameter of the cut nickel-titanium tube;

[0004] When nickel-titanium tubes with different outer diameters need to be cut, the entire cutting tool base needs to be removed, the auxiliary cutting tool needs to be removed, and the auxiliary cutting tool needs to be replaced with one that matches the required cutting tube. Then, the machine needs to be debugged for cutting, which takes a lot of time. Utility Model Content

[0005] The utility model provides an auxiliary tool for cutting a metal bracket, which can at least solve one problem pointed out in the background technology.

[0006] An auxiliary tool for cutting a metal bracket, comprising a cutting base, an auxiliary tool seat and an adjustable tool, wherein the auxiliary tool seat is fixedly connected to the cutting base, and the adjustable tool is installed on the auxiliary tool seat;

[0007] Among them, a channel for allowing the bracket to pass through is opened in the auxiliary tooling seat. The adjustable tooling is a cylindrical structure with multiple fixing parts distributed circumferentially inside. Any fixing part is connected to the inner wall of the adjustable tooling through an elastic connecting part. An adjusting part is fixedly connected to the auxiliary tooling seat. When the adjustable tooling rotates, multiple fixing parts move toward or away from the center axis of the adjustable tooling.

[0008] The auxiliary tooling seat is provided with a boss portion, the adjusting piece is fixed on the boss portion, and the adjustable tooling is provided with a connecting portion matched with the boss portion, and the connecting portion is sleeved outside the boss portion.

[0009] Preferably, the adjusting member includes a plurality of adjusting parts, and the plurality of adjusting parts correspond one to one with the plurality of fixing members;

[0010] The multiple adjustment parts have multiple planes distributed along the circumferential direction, the multiple planes are in contact with the lower edge of the fixing member, and the distances between the multiple planes and the central axis of the adjustable tooling are distributed in a decreasing manner.

[0011] A cambered surface transition is adopted between two adjacent planes.

[0012] Preferably, the elastic connecting member includes a spring, a connecting rod and a sleeve cooperating with the connecting rod, wherein two ends of the spring are respectively connected to the fixing member and the adjustable tooling, the connecting rod is connected to the fixing member, and the sleeve is connected to the adjustable tooling.

[0013] Preferably, a roller is rotatably provided on one side of the fixing member, and the roller is located on a plane.

[0014] Preferably, a plurality of ear plates are fixedly connected to the adjustable tooling, a plurality of circumferentially distributed mounting holes are provided on the auxiliary tooling seat, and the ear plates are fixed to the mounting holes by bolts.

[0015] Preferably, a rubber pad is provided on the contact surface between the fixing piece and the metal bracket.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention is provided with an adjustable tooling, and the spacing between multiple fixings can be adjusted by rotating the adjustable tooling, so that nickel-titanium tubes of various specifications can be clamped, the scope of application is wider, and the adjustment is also very convenient, which effectively improves the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the existing tooling;

[0018] Figure 2 It is a structural diagram of the utility model;

[0019] Figure 3 It is a partial cross-sectional view of the utility model;

[0020] Figure 4 It is a cross-sectional view of the adjustable tooling of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the adjustable fixture clamping the smallest nickel-titanium tube;

[0022] Figure 6 Schematic diagram of the structure when the adjustable tooling clamps the largest nickel-titanium tube.

[0023] Description of reference numerals:

[0024] 1-cutting base, 2-auxiliary tooling seat, 3-adjustable tooling, 4-fixing part, 5-adjusting part, 6-boss part, 7-connecting part, 8-ear plate, 9-mounting hole, 10-spring, 11-connecting rod, 12-sleeve, 13-adjusting part, 14-roller, 15-nickel-titanium tube. DETAILED DESCRIPTION

[0025] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0026] like Figures 2 to 6 As shown, an auxiliary tooling for cutting a metal bracket provided by an embodiment of the present invention comprises a cutting base 1, an auxiliary tooling seat 2 and an adjustable tooling 3, wherein the auxiliary tooling seat 2 is fixedly connected to the cutting base 1, and the adjustable tooling 3 is mounted on the auxiliary tooling seat 2;

[0027] Among them, the auxiliary tooling seat 2 is provided with a channel for allowing the stent to pass through, the adjustable tooling 3 is a cylindrical structure, and a plurality of fixing parts 4 are distributed circumferentially therein, and any fixing part 4 is connected to the inner wall of the adjustable tooling 3 by an elastic connector. An adjusting part 5 is fixedly connected to the auxiliary tooling seat 2. When the adjustable tooling 3 rotates, the plurality of fixing parts 4 move toward or away from the central axis of the adjustable tooling 3, thereby realizing that the adjustable tooling 3 has a variable diameter channel, that is, the internal channel diameter can be changed by rotating the adjustable tooling 3, thereby being able to fix nickel-titanium tubes 15 (metal stent raw materials) of various outer diameters;

[0028] The contact surface between the fixing member 4 and the nickel-titanium tube 15 is provided with a rubber pad to avoid damage to the surface of the nickel-titanium tube 15;

[0029] Specifically, in order to achieve a stable installation of the adjustable tooling 3 on the auxiliary tooling seat 2, the auxiliary tooling seat 2 has a boss portion 6, the adjusting member 5 is fixed on the boss portion 6, and the adjustable tooling 3 has a connecting portion 7 that cooperates with the boss portion 6, and the connecting portion 7 is sleeved outside the boss portion 6;

[0030] In addition, the adjustable fixture 3 is fixedly connected with a plurality of lugs 8, and the auxiliary fixture seat 2 is provided with a plurality of mounting holes 9 distributed circumferentially. The lugs 8 are fixed to the mounting holes 9 by bolts. When adjusting the size of the internal channel of the adjustable fixture 3, the fixings must be released before rotation.

[0031] The elastic connecting member of this embodiment includes a spring 10, a connecting rod 11, and a sleeve 12 that cooperates with the connecting rod 11. The two ends of the spring 10 are respectively connected to the fixing member 4 and the adjustable tooling 3, the connecting rod 11 is connected to the fixing member 4, and the sleeve 12 is connected to the adjustable tooling 3.

[0032] The adjusting member 5 of this embodiment includes a plurality of adjusting portions 13, and the plurality of adjusting portions 13 correspond one-to-one to the plurality of fixing members 4; the plurality of adjusting portions 13 have a plurality of planes distributed along the circumferential direction, and an arc surface transition is adopted between two adjacent planes. The plurality of planes are in contact with the lower edge of the fixing member 4, and the distances between the plurality of planes and the central axis of the adjustable tooling 3 are distributed in a decreasing manner. Specifically, the adjusting member 5 of this embodiment includes three adjusting portions 13, and the adjusting portion 13 has four planes, that is, it can adapt to four specifications of nickel-titanium tubes 15;

[0033] In order to reduce friction, a roller 14 is rotatably provided on one side of the fixing member 4 of this embodiment, and the roller 14 is located on a plane;

[0034] When the adjustable tooling 3 rotates, under the action of the elastic connector, the roller 14 moves from one plane to another, and the fixing part 4 produces a displacement along the length direction of the connecting rod 11. The three fixing parts 4 are squeezed on the nickel-titanium tube 15, the rubber pad is squeezed, and then the bolts fix the adjustable tooling 3 to complete the clamping, and the cutting process can be carried out subsequently.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An auxiliary tool for cutting metal brackets, characterized in that: It includes a cutting base, an auxiliary tooling base and an adjustable tooling, wherein the auxiliary tooling base is fixedly connected to the cutting base, and the adjustable tooling is installed on the auxiliary tooling base; Among them, a channel for allowing the bracket to pass through is opened in the auxiliary tooling seat. The adjustable tooling is a cylindrical structure with multiple fixing parts distributed circumferentially inside. Any fixing part is connected to the inner wall of the adjustable tooling through an elastic connecting part. An adjusting part is fixedly connected to the auxiliary tooling seat. When the adjustable tooling rotates, multiple fixing parts move toward or away from the center axis of the adjustable tooling.

2. The auxiliary tool for cutting a metal stent according to claim 1, characterized in that: The auxiliary tooling seat is provided with a boss portion, the adjusting piece is fixed on the boss portion, and the adjustable tooling is provided with a connecting portion matched with the boss portion, and the connecting portion is sleeved outside the boss portion.

3. The auxiliary tool for cutting a metal stent according to claim 1, characterized in that: The adjusting member includes a plurality of adjusting parts, and the plurality of adjusting parts correspond to the plurality of fixing members one by one; The multiple adjustment parts have multiple planes distributed along the circumferential direction, the multiple planes are in contact with the lower edge of the fixing member, and the distances between the multiple planes and the central axis of the adjustable tooling are distributed in a decreasing manner.

4. The auxiliary tool for cutting a metal stent according to claim 3, characterized in that: A cambered surface transition is adopted between two adjacent planes.

5. The auxiliary tool for cutting a metal stent according to claim 1, characterized in that: The elastic connecting member includes a spring, a connecting rod and a sleeve matched with the connecting rod, wherein two ends of the spring are respectively connected to the fixing member and the adjustable tooling, the connecting rod is connected to the fixing member, and the sleeve is connected to the adjustable tooling.

6. The auxiliary tool for cutting a metal stent according to claim 3, characterized in that: A roller is rotatably provided on one side of the fixing piece, and the roller is located on a plane.

7. The auxiliary tool for cutting a metal stent according to claim 1, characterized in that: A plurality of ear plates are fixedly connected to the adjustable tooling, a plurality of mounting holes distributed circumferentially are provided on the auxiliary tooling seat, and the ear plates are fixed to the mounting holes by bolts.

8. The auxiliary tool for cutting a metal stent according to claim 1, characterized in that: A rubber pad is provided on the contact surface between the fixing piece and the metal bracket.

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