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Bendable tube for endoscope, and method for manufacturing bendable tube for endoscope

A manufacturing method and technology of bending tubes, applied in endoscopes, manufacturing tools, applications, etc., can solve problems such as loss of superelasticity, and achieve the effect of increasing friction

Active Publication Date: 2019-05-24
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Here, in the case where the bent pipe is made of Nitinol, it is also necessary to attach an operating wire for bending operation, but if the operating wire is brazed as described in Patent Document 1, for example, the characteristics of Nitinol will be lost due to high temperature. hyperelastic

Method used

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  • Bendable tube for endoscope, and method for manufacturing bendable tube for endoscope
  • Bendable tube for endoscope, and method for manufacturing bendable tube for endoscope
  • Bendable tube for endoscope, and method for manufacturing bendable tube for endoscope

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Embodiment Construction

[0041] Hereinafter, embodiments of the curved tube for endoscope and the method for manufacturing the curved tube for endoscope according to the present invention will be described with reference to the drawings. In addition, the present invention is not limited to the following embodiments, and the constituent elements in the following embodiments include elements that can be easily replaced by those skilled in the art, or elements that are substantially the same.

[0042] [Structure of endoscope]

[0043] Regarding the structure of the endoscope with the curved tube of the present invention, refer to figure 1 Be explained. Such as figure 1 As shown, the endoscope 100 has an operation unit 110 , an insertion unit 120 , and a universal cable 130 .

[0044] The operation part 110 is connected to the proximal end side of the insertion part 120, and is provided with various buttons and knobs for operating endoscope functions. The operation unit 110 is provided with a treatmen...

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Abstract

This bendable tube (1) is provided with: a bendable tube body (10) having a wire passage section (12) provided on the inner surface thereof; an operating wire (13) for the bending operation of the bendable tube body (10); a pipe member (14) press-fitted over the operating wire (13) and engaged with the wire passage section (12) of the bendable tube body (10); and particles (22) located between theouter peripheral surface of the operating wire (13) and the inner peripheral surface of the pipe member (14). The particles (22) have higher hardness than a substance forming the operating wire (13)and the pipe member (14) and are embedded, in a biting manner, in the outer peripheral surface of the operating wire (13) and also in the inner peripheral surface of the pipe member (14).

Description

technical field [0001] The present invention relates to a curved tube for an endoscope and a method for manufacturing the curved tube for an endoscope. Background technique [0002] A conventional curved tube for endoscopes (hereinafter simply referred to as "curved tube"), for example, as shown in Patent Document 1, has a structure in which a plurality of joint rings are joined by rivets, and the joint ring at the tip is brazed. There are operating wires for bending operations on the knuckle. In the bent pipe having such a structure, since the joint rings are overlapped and joined in the radial direction, the thickness of the overlapped portion is doubled. Further, since the rivets for joining the node rings protrude toward the inner peripheral side and the outer peripheral side of the node rings, respectively, there is a problem that the inner diameter and the outer diameter are increased. [0003] Therefore, in recent years, there have been curved pipes that use a singl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/008G02B23/24
CPCB21K25/00B21F45/008B21F15/00A61B1/0055A61B1/0057A61B1/0011G02B23/24
Inventor 中川宽纪
Owner OLYMPUS CORP