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Endoscope bending tube

A technology for bending tubes and endoscopes, applied in the field of endoscopes, can solve the problems of reducing durability and achieve the effects of improving durability, ingenious structural design, and easy production

Inactive Publication Date: 2018-03-16
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, if the torsion-preventing tabs are provided in each groove including a predetermined region on the proximal side of the curved tube, the rotational torque around the axis will be concentrated on the predetermined groove on the proximal side, which may reduce the stability of the groove. durability

Method used

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Examples

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Embodiment Construction

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0023] As mentioned above, the embodiment of the present invention has been described in detail with reference to the drawings, but the specific structure of the present invention is not limited to the embodiment, and design changes and the like within the range not departing from the gist of the present invention are also included.

[0024] figure 1 It is an endoscope including an insertion part 2 inserted into a body, an operation part 3 provided at the proximal end of the insertion part 2 , and an eyepiece part 5 provided at the proximal end of the operation part 3 .

[0025] Wherein, the insertion part 2 includes a front end hard part 11 at the front end, a curved part 12 connected to the base end of the front e...

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PUM

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Abstract

The invention provides an endoscope bending tube, which is capable of improving durability without excessive decrease in torsional rigidity around an axis. Therefore, torsion-preventing tab mechanismsare arranged in first bending grooves and second bending grooves within a region (a torsion-inhibiting region) of a specified position from the base end to the front end side of a bent tube main body; and as for the endoscope bending tube that the first and second bending grooves can pass through and the bending tube main body can get bent, in the first and second bending grooves which are distributed into a same column in a length direction of the bending tube main body, at least any one first bending groove or second bending groove, except for the first and second bending grooves at the basic-most end, at the base end sides of various arrangements is not prevented with the torsion-preventing tab mechanism.

Description

technical field [0001] The invention relates to the field of endoscopes, in particular to a bending tube for endoscopes that bends according to the operation of an operating part. Background technique [0002] Conventionally, an endoscope that displays an image of a subject in a body cavity on a screen of a display device or the like by inserting an elongated insertion portion into the body cavity has been widely used. In general, a bending portion is provided on the front end side of the insertion portion of such an endoscope, and the bending portion is configured, for example, in two directions of up and down, two directions of left and right, or in up and down directions corresponding to an object image displayed on a display device or the like. It can bend freely in 4 directions, left and right. [0003] In recent years, curved pipes using superelastic alloy materials have been proposed as curved pipes constituting such a curved portion. Such a curved pipe can be easil...

Claims

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Application Information

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IPC IPC(8): A61B1/005A61B1/012
CPCA61B1/00066A61B1/0008A61B1/0055A61B1/012
Inventor 马骁萧冯宇付玲
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH