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CN-224206808-U - Endoscope bending tube and endoscope

CN224206808UCN 224206808 UCN224206808 UCN 224206808UCN-224206808-U

Abstract

The utility model discloses an endoscope bending tube and an endoscope, wherein a connecting mechanism is arranged between adjacent joints, the connecting mechanism comprises a rotating plate, the rotating plate protrudes along the axial direction of the joint, limiting grooves are formed in two sides of the rotating plate, and clamping parts are arranged in the limiting grooves. The second connecting structure comprises a clamping groove, limiting pieces are arranged on two sides of the clamping groove, the limiting pieces are arranged at the end parts of the joints and extend to form protrusions, and clamping claws are arranged at the end parts of the limiting pieces. The limiting piece surrounds the two sides of the rotating piece during connection, the clamping claw is clamped into the limiting groove in a matched mode, and the clamping claw is abutted with the clamping part during movement. The supporting force between the two joints is increased by the clamping jaw and the limiting groove, and the reliability between the two joints is increased during bending, so that the effect of increasing the bending strength of the bending tube is achieved, and the bending tube is not easy to break. The limiting plates are used for limiting at two sides of the rotating plate, so that torsion of two joints in the circumferential direction is reduced, torsion of the bending tube in the circumferential direction is avoided, and torsion resistance of the bending tube is improved.

Inventors

  • WU JUN
  • Peng Zigen
  • XU YIJING

Assignees

  • 珠海普生医疗科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250220

Claims (9)

  1. 1. An endoscope bending tube comprises a plurality of joints (10) which are connected in sequence, and is characterized in that a connecting mechanism is arranged between the adjacent joints (10), and the connecting mechanism comprises The connecting structure I comprises a rotating piece (110) arranged at the end part of the joint (10), the rotating piece (110) protrudes along the axial direction of the joint (10), two sides of the rotating piece (110) are provided with limiting grooves (120), and clamping parts (130) are arranged in the limiting grooves (120); The second connecting structure comprises a clamping groove (210) arranged at the end part of the joint (10), the clamping groove (210) is recessed along the axial direction of the joint (10), limiting pieces (220) are arranged on two sides of the clamping groove (210), the limiting pieces (220) are arranged at the end part of the joint (10) and extend to form a protrusion, and clamping claws (230) are arranged at the end part of the limiting pieces (220); The first connecting structure is rotatably connected with the connecting structure, the rotating piece (110) is rotatably clamped into the clamping groove (210), the limiting pieces (220) surround the two sides of the rotating piece (110), the clamping claws (230) are clamped into the limiting grooves (120), and the clamping parts (130) limit the clamping claws (230).
  2. 2. The bending tube of claim 1, further comprising a connecting groove (320) and a connecting piece (310), wherein one of the connecting groove (320) and the connecting piece (310) is arranged on the rotating piece (110), the other connecting groove is arranged in the clamping groove (210), and when the first connecting structure is connected with the second connecting structure, the connecting piece (310) is clamped into the connecting groove (320) to rotate along with bending of the joint (10).
  3. 3. The bending tube of claim 2, wherein the clip groove (210) is provided with a secondary rotating piece (211), the connecting groove (320) is formed in the secondary rotating piece (211), the rotating piece (110) is provided with a secondary clip groove (111), and the connecting piece (310) is formed in the secondary clip groove (111).
  4. 4. The bending endoscope tube as defined in claim 2, wherein the connecting piece (310) comprises a connecting body (311) and a connecting root portion (312), the connecting root portion (312) is located at the bottom of the connecting body (311) and is connected with the joint (10), and the width of the connecting body (311) is larger than the width of the connecting root portion (312).
  5. 5. The bending endoscope tube as defined in claim 4, wherein the connecting body (311) and the connecting groove (320) are fan-shaped, and a tip of the connecting body (311) faces the direction of the adjacent joint (10) and a tip of the connecting groove (320) faces the direction of the joint (10) body.
  6. 6. The bending tube of the endoscope of claim 2, wherein the length of the connecting groove (320) is greater than the length of the connecting piece (310), the length of the limiting groove (120) is greater than the length of the limiting piece (220), a gap for the connecting piece (310) to rotate is reserved at two ends of the connecting groove (320), and a gap for the limiting piece (220) to move is reserved at two ends of the limiting groove (120).
  7. 7. The bending tube of claim 1, wherein the top corners of the jaws (230) facing the adjacent joint are arc-shaped fillets, and the corresponding top corners of the limiting grooves (120) are arc-shaped fillets.
  8. 8. The bending tube of claim 1, wherein the jaw (230) comprises a protruding upper clamping block (231) and a protruding lower clamping block (232), the clamping portion (130) comprises an upper clamping portion (131) and a lower clamping portion (132), and the upper clamping block (231) and the lower clamping block (232) respectively press against the upper clamping portion (131) and the lower clamping portion (132) when the jaw (230) moves to the end of the limiting groove (120).
  9. 9. An endoscope comprising the curved tube of any of claims 1-8.

Description

Endoscope bending tube and endoscope Technical Field The utility model relates to the field of medical instruments, in particular to an endoscope bending tube and an endoscope. Background An endoscope is a medical device widely used for clinical examination and diagnosis, and includes a handle and an insertion portion in which a bending tube is provided, the bending portion of the bending tube is often called a snake bone, and the snake bone is an important part of the endoscope, and is typically formed by sequentially connecting a plurality of joints. The connecting mechanisms of the two adjacent joints enable the two joints to relatively rotate within a certain range, and the bending direction change is realized by traction ropes arranged in the snake bones, so that a bending tube of the endoscope is formed. However, since the snake bone is often bent, the bending portion of the snake bone is likely to be broken due to insufficient strength of the bending portion, and the bending angle and the usability of the endoscope insertion tube are affected by the strength of the bending tube, which is an important index of the endoscope, it is necessary to provide an endoscope bending tube with higher strength. Disclosure of utility model In order to overcome at least one of the above-mentioned technical problems of the prior art, the present utility model provides an endoscope bending tube and an endoscope capable of effectively enhancing bending strength and torsional strength. The utility model provides an endoscope bending tube, which comprises a plurality of joints which are connected in sequence, wherein a connecting mechanism is arranged between the adjacent joints, and the connecting mechanism comprises a first connecting structure and a second connecting structure. The first connecting structure comprises a rotating piece arranged at the end part of the joint, the rotating piece protrudes along the axial direction of the joint, limiting grooves are formed in two sides of the rotating piece, and clamping parts are arranged in the limiting grooves. The second connecting structure comprises a clamping groove arranged at the end part of the joint, the clamping groove is recessed along the axial direction of the joint, limiting sheets are arranged on two sides of the clamping groove and are arranged at the end part of the joint and extend to form a protrusion, and clamping claws are arranged at the end part of the limiting sheets. The first connecting structure is rotatably connected with the connecting structure, the rotating piece is rotatably clamped into the clamping groove, the limiting pieces surround the two sides of the rotating piece, the clamping jaws are clamped into the limiting groove, and the clamping jaws are limited by the clamping portion. The endoscope bending tube has the advantages that the adjacent joints are connected through the rotating piece and the clamping groove, the limiting piece and the limiting groove are used for fixing and limiting, the clamping jaw and the clamping part increase the supporting force between the two joints, and the connection strength between the joints is increased during bending, so that the effect of increasing the bending strength of the bending tube is achieved, and the bending tube is not easy to break. The limiting sheets are surrounded on two sides of the rotating sheet to limit, so that torsion of joint joints is reduced, torsion of the bending tube in the circumferential direction is avoided, and torsion resistance of the bending tube is improved. In some embodiments of the endoscope bending tube, a connecting groove and a connecting piece are further provided, one connecting groove and one connecting piece are alternatively arranged on the rotating piece, the other connecting groove and the other connecting piece are arranged in the clamping groove, and when the first connecting structure is connected with the second connecting structure, the connecting piece is clamped into the connecting groove to rotate along with bending of the joint. The connecting groove and the connecting sheet form a buckle structure, so that the connection strength between the first connecting structure and the second connecting structure can be improved, and the strength of the bent pipe is further improved. In some embodiments of the endoscope bending tube, a secondary rotating plate is arranged in the clamping groove, the connecting groove is arranged on the secondary rotating plate, a secondary clamping groove is arranged on the rotating plate, and the connecting piece is arranged in the secondary clamping groove. The auxiliary rotating piece and the auxiliary clamping groove are used for arranging the connecting piece and the connecting groove, and the connecting strength between joints is improved in a matched mode. In some embodiments of the endoscope bending tube described above, the connecting piece comprises a connecting body and a connecting root portion, the con