CN-121971027-A - Single-channel minimally invasive arthroscope sheath

CN121971027ACN 121971027 ACN121971027 ACN 121971027ACN-121971027-A

Abstract

The invention relates to a single-channel minimally invasive arthroscope sheath which comprises a sheath body, wherein an observation cavity and an operation cavity are formed in the length direction of the sheath body. A spacer is arranged between the observation cavity and the operation cavity, and the axis of the observation cavity and the operation cavity form a cooperative working area in front of the placement end. The sheath fundamentally realizes a single-channel and double-function minimally invasive surgery mode. Wherein, through the physical isolation of the spacer and the space angle design of the observation cavity channel and the operation cavity channel, the arthroscope and the surgical instrument are ensured to be parallel in a single channel and not to interfere with each other. In the operation process, the arthroscope can obtain a stable and clear operation field, and the surgical instrument can directly reach the operation area in the preset direction, and the arthroscope and the surgical instrument are converged in the target area to form effective cooperation, so that a single incision is used for replacing the traditional double channels, the wound area is reduced, the number of channels can be further reduced on the premise of ensuring the operability of the operation, and a minimally invasive arthroscope sheath structure is realized.

Inventors

SUN HAOLIN
ZHANG XINGSHENG
HUANG CHANGSHENG
Liao Zhangzheng
YUE LEI
WANG WENTAO
WANG ZIQI
LIU SHAOHUANG
LIU HAORAN
LEI CONG
ZHANG JIANMING
ZHU RANLV

Assignees

北京大学第一医院(北京大学第一临床医学院)

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. A single-channel minimally invasive arthroscope sheath is characterized by comprising a sheath main body, wherein one end of the sheath main body is a connecting end, and the other end of the sheath main body is an inserting end; The endoscope sheath body is provided with an observation cavity and an operation cavity along the length direction of the endoscope sheath body, one end of the observation cavity is used for inserting an arthroscope and observing an operation area in front of the placement end; The device comprises an operation cavity, an observation cavity and an operation cavity, wherein the operation cavity is arranged at the front side of the operation cavity, and the operation cavity is arranged at the front side of the operation cavity.
2. The minimally invasive arthroscopic sheath of claim 1 wherein an extension tube is connected to an end of the viewing channel, the extension tube being configured to guide insertion of an arthroscope into the viewing channel, the end of the extension tube being connected to a locker configured to lock the arthroscope.
3. The minimally invasive arthroscopic sheath of claim 2 wherein the extension tube communicates with an external conduit.
4. A minimally invasive arthroscopic sheath according to claim 3 and wherein said manipulation channel side wall is configured as an open channel.
5. A minimally invasive arthroscopic sheath according to claim 3 and wherein said operative lumen side seals in a ducted arrangement.
6. The minimally invasive arthroscopic sheath of claim 5 wherein a sealing site is provided in a middle section of the sheath body, the sealing site being in contact sealing with a skin insertion port surface after insertion of the insertion end; The sealing position divides the operation cavity into a sealing section and an opening section, and the opening section is positioned below the sealing position so as to reduce the volume of the sheath body positioned below the sealing position.
7. The minimally invasive arthroscopic sheath of claim 6 wherein the end of the operative lumen is provided with a gasket, the gasket defining a relief opening for insertion of surgical instruments.
8. The minimally invasive arthroscopic sheath of claim 1 wherein the axis of the viewing channel forms an angle with the axis of the operative channel of 10-20 degrees.
9. The minimally invasive arthroscopic sheath of claim 1 wherein the spacer is an elastic construct.
10. The minimally invasive arthroscopic sheath of claim 1 wherein the insertion end of the sheath body is a rounded arc-shaped structure.

Description

Single-channel minimally invasive arthroscope sheath Technical Field The invention relates to the technical field of medical instruments, in particular to a single-channel minimally invasive arthroscope sheath. Background The arthroscope technique is used as a key minimally invasive means for treating joint diseases (such as myogenic torticollis, meniscus injury, ligament laceration and the like) in orthopedics, and has the advantages of small wound, quick recovery, few complications and the like. Currently, the arthroscope system widely used in clinic generally adopts a dual-channel design, namely, an observation channel (used for placing an arthroscope) and an operation channel (used for placing a surgical instrument) are required to be respectively established. Although the technology is mature, the design still has obvious defects in practical application, and in the operation, two independent incisions are required to be established, so that the wound, postoperative pain and infection risk of a patient are increased. Disclosure of Invention Aiming at the technical problems, the invention provides a single-channel minimally invasive arthroscope sheath which is provided with an observation cavity and an operation cavity, so that the number of channels can be further reduced and a minimally invasive arthroscope sheath structure can be realized on the premise of ensuring the operability of an operation. In order to achieve the above purpose, the present invention adopts the following technical scheme: a single-channel minimally invasive arthroscope sheath comprises a sheath main body, wherein one end of the sheath main body is a connecting end, and the other end of the sheath main body is an inserting end; The endoscope sheath body is provided with an observation cavity and an operation cavity along the length direction of the endoscope sheath body, one end of the observation cavity is used for inserting an arthroscope and observing an operation area in front of the placement end; The device comprises an operation cavity, an observation cavity and an operation cavity, wherein the operation cavity is arranged at the front side of the operation cavity, and the operation cavity is arranged at the front side of the operation cavity. In one of the embodiments, the end of the observation cavity is connected with an extension tube, the extension tube is used for guiding the arthroscope to be inserted into the observation cavity, and the end of the extension tube is connected with a locker used for locking the arthroscope. In one of the embodiments, the extension tube is connected to an external pipe. In one of the embodiments, the side wall of the operation cavity is arranged in an open groove shape. In one of the embodiments, the side portion of the operation cavity is sealed and is arranged in a pipeline. In one of the embodiments, a sealing position is arranged at the middle section of the sheath body, and after the placement end is placed, the sealing position is in contact seal with the surface of the skin placement opening; The sealing position divides the operation cavity into a sealing section and an opening section, and the opening section is positioned below the sealing position so as to reduce the volume of the sheath body positioned below the sealing position. In one of the embodiments, a sealing gasket is arranged at the end part of the operation cavity, and the sealing gasket is provided with an avoidance opening for inserting surgical instruments. In one of the embodiments, the axis of the observation channel and the axis of the operation channel form an included angle of 10-20 degrees. In one of the embodiments, the spacer is an elastic structure. In one of the embodiments, the insertion end of the sheath body is a rounded arc-shaped structure. Due to the adoption of the technical scheme, the invention has the following advantages: Two mutually independent observation channels and operation channels are arranged in the sheath main body and are isolated by a spacer, and the axes of the two channels are intersected in the front operation area of the placement end. Through the arrangement of the structure, the endoscope sheath fundamentally realizes a single-channel and double-function minimally invasive surgery mode. Wherein, through the physical isolation of the spacer and the space angle design of the observation cavity channel and the operation cavity channel, the arthroscope and the surgical instrument are ensured to be parallel in a single channel and not to interfere with each other. In the operation process, the arthroscope can obtain a stable and clear operation field, and the surgical instrument can directly reach the operation area in the preset direction, and the arthroscope and the surgical instrument are converged in the target area to form effective cooperation, so that a single incision is used for replacing the traditional double channels, the wound area is reduced, the number of cha