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One steel wire stranded hollow coil, one medical apparatus produced with the same, and producing method thereof

一种空盘圈、绞合的技术，应用在制绳的辅助装置、应用、传感器等方向，能够解决增加扭转阻力、不能柔性实体线本体投入、增加重量等问题，达到高转动顺从能力、良好直线性感觉、高直线性的效果

Inactive Publication Date: 2008-07-09
ASAHI INTECC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible solid wire body disclosed by the third reference is made of a solid thin wire without a central hollow portion at all, which increases torsional resistance, and adds excessive weight per unit length dimension, so that the flexible solid wire body cannot be dropped into Practical application of medical equipment

Method used

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  • One steel wire stranded hollow coil, one medical apparatus produced with the same, and producing method thereof
  • One steel wire stranded hollow coil, one medical apparatus produced with the same, and producing method thereof
  • One steel wire stranded hollow coil, one medical apparatus produced with the same, and producing method thereof

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Embodiment Construction

[0055] 1 to 5, the wire stranded hollow coil body 1 according to the first embodiment of the present invention manufactured by the first method of manufacturing the wire stranded hollow coil body 1 is described. In order to use an elongated elastic thin wire as a guide wire for medical use, a plurality of austenitic stainless steel coil wire elements 2 are twisted along a predetermined loop wire to form a flexible linear tube, the space of which is used as the central axis To the hollow part 3. The total length (Lt) of the flexible linear tube is measured to be approximately 1,000-1,500mm.

[0056] The 2 groups of coil wire elements are stranded under the action of anti-twisting torsional load (torque load), and heat treatment is performed to eliminate the residual stress that occurs during the stranding and drawing operations. The stranded hollow coil body 1 thus formed has a high linearity in the free state, and there is no unfavorable coiling or bulging phenomenon. The stranded...

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Abstract

A wire-stranded hollow coil body (1) has a multitude of coil line elements (2) stranded along a predetermined circular line to form a flexible wire tube having a central axial hollow portion (3), the flexible wire tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness. Further, a method provides a way to strand the coil line elements (2) under a strand-turn resistant load while heat treating the coil line elements (2).

Description

Technical field [0001] The present invention relates to a stranded hollow coil body, which is used as the main linear component of a medical device, which is in the form of a flexible linear steel wire, such as a urinary catheter, a catheter wire, an endoscope processing tool, etc., More specifically, it relates to a medical device manufactured therefrom and a method for manufacturing a stranded hollow coil body. Background technique [0002] In guiding the leading end through a twisted and curved vasculature to a urinary catheter and catheter lead of a diseased area, through the "push-pull and rotation" manipulation of the part that is located outside the patient's body that can be reached by the hand, Insert a leading end of a urinary catheter or catheter wire into a blood vessel or body cavity to treat the diseased area. In an endoscope treatment tool inserted through the body cavity to reach the diseased area, the leading end of the endoscope treatment tool is manipulated in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/00A61M25/10D07B1/00A61B1/005A61F2/958A61M25/01A61M25/09A61M25/16D07B1/12D07B3/00
CPCA61M2025/09191A61B5/6851D07B1/12A61M25/09A61B5/417A61B1/00071A61B1/005D07B3/00A61M2025/09108D07B5/005D07B2201/2021D07B2207/4063D07B2207/4072D07B5/12D07B2801/60D07B2801/62
Inventor 加藤富久宫田宪次
Owner ASAHI INTECC CO LTD
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