A multifunctional high frequency cutting knife

Abstract

The invention discloses a multifunctional high-frequency incision knife which comprises a core bar, a sliding block embedded in the core bar, an electric conduction base connected with one end of the core bar and a jacket tube connected with the end, far away from the core bar, of the electric conduction base. A sheath tube is arranged in the jacket tube. An inhaul cable which is connected with the sliding block and connected with the electric conduction base is arranged in the sheath tube. The end, far away from the sliding block, of the inhaul cable is connected with a tong head part. The tong head part comprises a pull rod and a connecting piece, wherein the inhaul cable is embedded in the pull rod, and the pull rod is embedded in the connecting piece. A tong head seat and a limiting piece are embedded in the outer portion of the connecting piece. The tong head seat, the limiting piece and the connecting piece are connected in a located mode through the connecting piece. The limiting piece is fixedly connected with the sheath tube. The end, away from the inhaul cable, of the pull rod is connected with a first connecting arm and a second connecting arm simultaneously through hinge pins. The first connecting arm and the second connecting arm are movably connected with a first jaw and a second jaw respectively through hinge pins. The first jaw and the second jaw are crossed, and the crossed positions are movably connected through a hinge pin, so that a clamping part of a tong head is formed.

Description

technical field [0001] The invention relates to a medical device, in particular to a high-frequency electric cutting knife suitable for mucosal resection or mucosal dissection, which can realize the functions of electric cutting and electric coagulation to stop bleeding at the same time. Background technique [0002] Endoscopic submucosal dissection (Endoscopic submucosal dissection, ESD) refers to the endoscopic minimally invasive technique of submucosal dissection for lesions larger than 2cm by using various electric cutters. This technique enables en bloc resection of larger lesions and provides accurate pathological diagnostic staging of the lesions. Compared with traditional surgery, ESD can better preserve the physiological functions of the digestive tract on the basis of radically eradicating tumors, and significantly improve the quality of life of patients after surgery. The preferred treatment method (see GotodaT, KondoH, OnoH, et al. Anewendoscopic mucosalresectio...

AI Technical Summary

Problems solved by technology

The various incision knives currently used for endoscopic submucosal dissection generally only have the function of incising tissue, and rarely have the function of electrocoagulation to stop bleeding. Once bleeding occurs, the incision knife must be taken out from the endoscopic forceps and replaced with a thermoelectric Coagulation forceps for electrocoagulation hemostasis, especially in patients with rich submucosal blood supply, need to replace instruments repeatedly, which not only greatly increases the operation time, but sometimes loses the best hemostasis timing, resulting in excessive blood loss and some unhealthy patients. Necessary damage to surrounding tissue

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