Endoscope joint ring, endoscope bent part and corresponding endoscope device

Abstract

The invention relates to an endoscope joint ring, an endoscope bent part and a corresponding endoscope device. The endoscope joint unit comprises a ring part and a restraint positioning part, wherein the periphery of the restraint positioning part is closed, and the restraint positioning part is a part independent from the ring part; the restraint positioning part is fixedly arranged at one side of the inner wall of the ring body. The endoscope bent part comprises at least two endoscope joint units, and adjacent endoscope joint units are in mutually movable connection. One end of the endoscope device is an insert end, and the endoscope bent part is positioned at the insert end. The size and shape of the restraint positioning part are not influenced by the size of the ring body, so that the restraint positioning part can be better matched with the periphery of an endoscope operation part; the consistence of each restraint positioning part is maintained, so that when a metal material is stamped, tiny changes due to inconsistent metal rebound shrinking rates can be avoided; the restraint positioning part is convenient to treat, trim, burr and other phenomena influencing extra resistance generated in a process of drawing a steel cable cannot occur.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to the technical field of endoscopes, and specifically refers to an endoscope joint ring, an endoscope bending part and a corresponding endoscope device. Background technique [0002] Current endoscopes use a built-in metal snake bone joint to change the direction of the head, and bend it by pulling the control wire connected to it. The grooves are connected with each other and then rotated axially to work. The shafts in the same direction can only bend in the positive and negative directions. Most of the existing metal snakes are connected by rivets. A groove that can pass through the steel wire has complicated processing technology and high price. [0003] Patent CN101677752B discloses a structure arranged at the insertion part of the endoscope, which is used to prevent the part of the operating wire from being a punched groove structure. In fact, due to the needs of th...

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Problems solved by technology

[0002] In order to change the direction of the head of the current endoscope, a metal snake bone joint is built in, and the control wire connected to it is pulled to make it bend. The grooves are connected with each other and then rotated axially to work. The shafts in the same direction can only bend in the positive and negative directions. Most of the existing metal snakes are connected by rivets. A groove that can pass through the steel wire, the processing technology is complicated, and its price is high

[0003] Patent CN101677752B discloses a structure arranged in the insertion part of the endoscope, which is used to prevent the part of the operation wire from being a punched groove structure. In fact, due to the needs of the operation, the size of the joint ring body is limited to a certain extent , generally speaking, the outer diameter of the joint ring body is 10mm to 15mm. In actual processing, the part of the endoscope is processed by hand, so the processing is very difficult. The accommodating part of the endoscope operating part is used to place The operating part of the endoscope, the receiving part of the operating part of the endoscope is a stamped structure, which has certain disadvantages: the wall thickness of the receiving part of the operating part of the endoscope is consistent with the wall thickness of the joint ring body, and the inner The size of the receiving part of the operating part of the sight glass is very small, and it is difficult to stamp the slot with a small size

[0004] When the diameter of the endoscope operating part is larger than that of the joint ring body, the depth of the punched groove is deeper, and the width of the edges on both sides is also larger. The frictional resistance between the operating part and the groove, and even the sliding out and displacement of the outgoing endoscope operating part in the groove will increase, and the bending friction of the endoscope operating part will cause great damage to the breaking of the endoscope operating part in severe cases. The effective available space in the joint ring body will also be reduced due to the occurrence of risks. Therefore, it is necessary to involve a more reasonable endoscope joint unit that is more conducive to processing, so that it can be used in the joint ring without changing the outer diameter of the joint ring. Generate more space in the body

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