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Tool clamp for NiTi alloy vascular stent heat-setting

A tooling fixture and vascular stent technology are applied in the field of medical devices to achieve the effects of improving processing quality, reducing damage and reducing vibration

Pending Publication Date: 2021-03-12
INNER MONGOLIA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a tooling fixture for heat setting of NiTi alloy vascular stents. The tooling fixture is not easy to damage the stent during the stent expansion process, and can meet the needs of stents with different diameters, and is easy to process and operate. Simple

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  • Tool clamp for NiTi alloy vascular stent heat-setting
  • Tool clamp for NiTi alloy vascular stent heat-setting
  • Tool clamp for NiTi alloy vascular stent heat-setting

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Embodiment Construction

[0039]In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive. In the description of the embodiments of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "length", "inner" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplified descriptions, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of t...

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Abstract

The invention relates to a tool clamp for NiTi alloy vascular stent heat-setting. The tool clamp comprises a drive system and a supporting system, wherein the supporting system comprises a supportingassembly, a lining assembly which is in sliding connection to the supporting assembly and can expand or shrink in the radial direction, and a supporting rod which can control the lining assembly to expand or retract in the radial direction along with motion; a NiTi alloy vascular stent sleeves the lining assembly; and the supporting rod is detachably connected to the drive system for driving the drive system to move. The tool clamp provided by the invention can meet needs of stents of different diameters; the lining assembly is additionally arranged between the clamp and the stent, so that friction effect of direct contact between the stent and a supporting rod is avoided, a breakage rate of the stent is reduced, and mechanical impact force, on the stent, in the process of supporting the stent is reduced; and while a large-diameter stent is manufactured, supporting rods with different diameters can be used to gradually support the stent, so that the tool clamp is simple and labor-saving in operation, and the stent deformation is uniform.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a fixture for heat-setting a NiTi alloy vascular stent. Background technique [0002] One method of processing NiTi alloy vascular stents is to use a laser to cut a section of small-diameter steel pipe to form a stent model, and then use a clamp to gradually expand the stent network tube and perform a heat setting process to obtain the required stent. [0003] At present, mechanical transmission is mostly used in the bracket expansion technology, and the impact and vibration of the mechanical transmission are relatively large; moreover, the direct contact between the fixture and the bracket is easy to cause the bracket to deform during processing, and the bracket will produce damage to the bracket during the bracket expansion process. Larger mechanical impact, the bracket is prone to breakage. In addition, the type of clamps in the prior art is fixed, which cannot meet the require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B11/00
CPCB25B11/00
Inventor 冯海全冯瑞龙王永刚李靖
Owner INNER MONGOLIA UNIV OF TECH
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