Linkage structure of an endoscopic instrument

Abstract

Disclosed is an endoscopic instrument and a linkage structure thereof. The linkage structure comprises a handle portion, a sheath catheter (10), a flow guide catheter, a traction wire, a cutting scalpel (13), and an injection needle (12), wherein the handle portion comprises a first handle (1), a second handle, an injection catheter (8) and an electrode tube (9), and the electrode tube (9) and the injection catheter (8) are arranged in a handle side cover (3) of the handle portion; a front end of the handle side cover (3) is further provided with an end cap (4), an electrode (15) is fixed on the end cap (4), the electrode tube (9) and / or the traction wire pass through the end cap (4), and the electrode (15) is in contact, by means of an electric brush, with the electrode tube (9) and / or the traction wire for electric conduction; and the flow guide catheter passes through the handle and is fixedly connected to an injection handle, and the injection handle moves forward and backward so as to drive the flow guide catheter to move forward and backward. The electrode (15) is fixed on the end cap (4) of the front end of the handle portion, and an injection port of the injection catheter (8) is arranged at a rear end of the handle portion, and a driven member has no load brought about by other connections, and as such, the portion held during the use of the instrument can be fully avoided, thereby reducing interference for an operator and reducing the motion load of an instrument mechanism, thus reducing the difficulty of process implementation.

Description

Technical field [0001] The present invention relates to a multifunctional linkage structure for endoscopic instruments, and more specifically, to a linkage structure for endoscopic instruments. Background technique [0002] In recent years, with the development of endoscopic technology, endoscopic tissue biopsy, endoscopic mucosal resection, and endoscopic mucosal dissection have been widely used for the treatment of gastrointestinal bleeding, stenosis, polypectomy, and early gastrointestinal cancer. plays a key role in its discovery, diagnosis and treatment. Currently, the commonly used instruments on the market are single-function high-frequency electric cutting instruments, single-function electrocoagulation instruments, and single-function endoscopic injection instruments; a few manufacturers provide instruments that combine electric cutting and electrocoagulation, and very few A device provided by the manufacturer that integrates electrical resection and injection func...

AI Technical Summary

Problems solved by technology

Its focus is on the special design of the multi-functional opening at the far end of the device. In addition, its electrodes and injection ports are located on the moving parts, which will lead to difficulties in product realization due to excessive push / pull resistance, and the operator may be affected by the interface connection. The interference of components affects the surgical action or has to interrupt the normal surgical action to adjust the posture

In addition, the connection of a single gear and a single belt in this design makes it difficult to cooperate when the strokes required by different functions are different.

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