Endoscope

Abstract

The invention discloses an endoscope. The endoscope is characterized in that an inserting part is provided with a controllable bending pipe; the controllable bending pipe comprises a plurality of round-pipe-shaped pipe joints which are connected in series; one end of each pipe joint is provided with a first C-shaped occlusion part, and the opening direction of the first C-shaped occlusion part andthe axial direction of the controllable bending pipe form a first included angle; a first C-shaped gap is arranged around the outer side of the first C-shaped occlusion part; the other end of each pipe joint is provided with a second C-shaped occlusion part matched with the first C-shaped gap, and the inner side of the second C-shaped occlusion part is provided with a second C-shaped gap and a spherical bulge matched with the first C-shaped occlusion part; when the pipe joints are connected in series, the spherical bulges are clamped in the first C-shaped occlusion parts, and the first C-shaped occlusion parts and the second C-shaped occlusion parts can do relative movement respectively in the second C-shaped gaps and the first C-shaped gaps of the adjacent pipe joints. The endoscope disclosed by the invention has the beneficial effects that the spherical bulges are difficult to fall off from the first C-shaped occlusion part, so that the connection between the pipe joints is firmer;the opening direction of the second C-shaped occlusion part and the axial direction of the bending pipe also form an included angle, so that the fastening property of connection is further improved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an endoscope comprising a controllable bending tube. Background technique [0002] Endoscopes applicable to industrial and medical applications are provided with an insertion portion inserted into a living body or a tube. Generally, in an endoscope having a flexible insertion portion, a controllable bending portion is provided on the distal end side of the insertion portion. The bending part can perform bending action according to the operation of the operating device provided in the operating part. Therefore, in the endoscope having a bending portion, the direction of the observation portion provided at the distal end portion can be directed in a desired direction by the operating device. [0003] In the invention patent with the application number CN200510076111.1, a bendable part (8') is disclosed. The bendable part (8') is arranged at the distal end of the insertion tube ...

AI Technical Summary

Problems solved by technology

[0006] However, in the curved pipe structure provided in the above-mentioned documents, the connection structures of each curved block or pipe section constituting the curved pipe are notches and protrusions that engage with each other, and the opening direction of the notch is consistent with the axial direction of the curved pipe , the protrusion snaps into the notch along the axial direction of the curved tube to connect each bending piece or tube section in series. This design is likely to cause the bending piece or tube section to fall off, which increases the safety hazard of the operation and affects the service life of the instrument.

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