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CN-224206807-U - Endoscope bending tube and endoscope

CN224206807UCN 224206807 UCN224206807 UCN 224206807UCN-224206807-U

Abstract

The utility model discloses an endoscope bending tube which comprises a plurality of joints which are connected in sequence, wherein a rotating piece and a clamping groove are arranged between the joints, the rotating piece is arranged at the end part of the joint and protrudes along the axial direction of the joint, and limit grooves are formed in two sides of the rotating piece. The clamping groove is formed in the end portion of the joint and concaves inwards along the axial direction of the joint, and limiting sheets are arranged on two sides of the clamping groove. The rotary plate also comprises a connecting groove and a connecting sheet, wherein one connecting groove and one connecting sheet are arranged on the rotary plate, and the other connecting groove and the other connecting sheet are arranged in the clamping groove. When two adjacent joints are connected, the rotating piece of one joint can be rotationally clamped into the clamping groove of the other joint, the limiting piece surrounds the limiting grooves on two sides of the rotating piece, and the connecting piece is clamped into the connecting groove to rotate along with the bending of the joint. The connecting grooves and the connecting sheets form a buckling structure, so that the connecting strength between joints can be improved, the strength of the bent pipe is further increased, the limiting sheets are surrounded on two sides of the rotating sheets to limit, torsion of joint joints is reduced, torsion of the bent pipe in the circumferential direction is avoided, and torsion resistance of the bent pipe 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 (8)

  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 rotating piece (110) is arranged at the end part of the joint (10) and protrudes along the axial direction of the joint (10), and limit grooves (120) are formed in two sides of the rotating piece (110); The clamping groove (210) is formed in the end part of the joint (10) and is concave inwards along the axial direction of the joint (10), and limiting sheets (220) are arranged on two sides of the clamping groove (210); the limiting structure comprises a connecting groove (320) and a connecting sheet (310), wherein one connecting groove (320) and one connecting sheet (310) are arranged on the rotating sheet (110), and the other connecting groove is arranged in the clamping groove (210); When two adjacent joints (10) are connected, the rotating piece (110) of one joint (10) is rotatably clamped into the clamping groove (210) of the other joint (10), the limiting piece (220) surrounds the limiting grooves (120) on two sides of the rotating piece (110), and the connecting piece (310) is clamped into the connecting groove (320) to rotate along with the bending of the joint (10).
  2. 2. The bending tube of the endoscope of claim 1, wherein the clamping groove (210) is internally provided with a secondary rotating plate (211), the connecting groove (320) is arranged on the secondary rotating plate (211), the rotating plate (110) is provided with a secondary clamping groove (111), the connecting piece (310) is arranged in the secondary clamping groove (111), and the secondary rotating plate (211) and the secondary clamping groove (111) can be rotatably clamped.
  3. 3. The bending tube of claim 1, wherein the bottoms of the connecting groove (320) and the connecting piece (310) are tapered, wherein the bottom vertex of the connecting piece (310) is abutted against the bottom vertex of the connecting groove (320), and wherein the connecting piece (310) is rotatable around the bottom vertex.
  4. 4. The bending endoscope tube as defined in claim 1, 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 tube of the endoscope of claim 1, 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).
  6. 6. The bending tube of claim 1, wherein the connecting piece (310) and the connecting groove (320) have rounded ends.
  7. 7. The bending tube of the endoscope of claim 1, wherein the top angles of the upper limit groove (120) and the clamping groove (210) of the joint (10) facing the body of the joint (10) are arc-shaped fillets, and the top angles of the upper limit piece (220) of the joint (10) facing away from the body of the joint (10) are arc-shaped fillets.
  8. 8. An endoscope comprising the curved tube of any of claims 1-7.

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. The endoscope bending tube comprises a plurality of joints which are sequentially connected, a connecting mechanism is arranged between every two adjacent joints, the connecting mechanism comprises a rotating piece and clamping grooves, the rotating piece is arranged at the end part of each joint and protrudes along the axial direction of each joint, limiting grooves are formed in two sides of the rotating piece, the clamping grooves are formed in the end part of each joint and indent along the axial direction of each joint, limiting pieces are arranged on two sides of each clamping groove, the endoscope bending tube further comprises limiting structures, each limiting structure comprises a connecting groove and a connecting piece, one connecting groove and one connecting piece are arranged on the rotating piece, the other connecting groove is arranged in the corresponding clamping groove, when two adjacent joints are connected, the rotating piece of one joint can be rotatably clamped into the corresponding clamping groove of the other joint, the limiting pieces surround the limiting grooves on two sides of the rotating piece, and the connecting pieces are clamped into the connecting grooves to rotate along with bending of the joints. The endoscope bending tube has the advantages that the adjacent joints are connected through the rotating sheets and the clamping grooves, the connection strength is enhanced through the limiting structure, the connecting grooves and the connecting sheets form the clamping structure, the connection strength between the joints can be improved, the strength of the bending tube is further improved, the limiting sheets surround the two sides of the rotating sheets for limiting, the torsion of joint joints is reduced, the bending tube is prevented from twisting in the circumferential direction, and the torsion resistance of the bending tube is improved. In some embodiments of the endoscope bending tube, an auxiliary rotating plate is arranged in the clamping groove, the connecting groove is formed in the auxiliary rotating plate, an auxiliary clamping groove is formed in the rotating plate, the connecting piece is arranged in the auxiliary clamping groove, and the auxiliary rotating plate and the auxiliary clamping groove can be clamped in a rotating mode. 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 bottom of the connecting groove and the connecting piece are tapered, a bottom apex of the connecting piece abuts against a bottom apex of the connecting groove, and the connecting piece is rotatable about the bottom apex. The conical structure is provided with an abutting vertex, so that the connecting sheet can be stably installed in the connecting groove, and the vertex is conveniently pressed to limit when the connecting sheet rotates. In some embodiments of the endoscope bending tube described above, the connecting piece comprises a connecting body and a connecting root portion, the connecting root portion being located at a bottom of the connecting body and being connected to the joint, the connecting body having a width greater than a width of the connecting root portion. The connecting main body forms a buckle structure in the connecting groove, so that the connecting main body cannot fall off from the