Thermosetting surgical knife device

Abstract

The invention relates to a thermosetting surgical knife device, mainly consisting of a main machine and a surgical knife assembly, wherein the surgical knife assembly is composed of a surgical knife blade and a surgical knife handle; the surgical knife blade is platelike; one side of the front end of the surgical knife blade is provided with a knife edge; the peripheral connected part of the knife edge is provided with a knife body which takes the shape of a multilayer plate; the substrate of the knife body is insulated; the knife body is composed of a heating piece, an insulated packaging layer and Teflon coating from inside to outside; an electrode is arranged at the rear part of the knife body, inserted into the front end of the surgical knife handle, and integrally fixedly connected with the same; an external heater and an external temperature sensor are attached to the exterior of the a surgical knife blade, and the external heater is a heating circuit; the heating piece is a looped heating strip; the knife blade surface adopts an external heating style that an external heating circuit is arranged at the outer part of the surgical knife blade surface, and controlled by an accurate control system composed of computer systems, so that the knife blade is warm but not electrified, and thereby the use safety of the surgical knife is ensured.

Description

technical field [0001] The invention relates to a medical surgical scalpel, in particular to a thermocoagulation scalpel device. Background technique [0002] Scalpels are the basic medical instruments for surgical operations, including two categories: ordinary metal surgical blades and high-frequency electric scalpels. Ordinary metal scalpels have the advantages of sharp, accurate and dexterous use, but bleeding occurs when cutting and separating tissues during surgery, and controlling bleeding (hemostasis) becomes an important and time-consuming part of the surgical operation. Moreover, bleeding will interfere with the surgeon's field of vision, Prolonging the operation time, reducing the accuracy of the operation, and complications in severe cases; the hemostatic effect of the high-frequency electric knife is clear, but its instantaneous temperature exceeds 1000 degrees Celsius, and the tissue eschar is severely carbonized, which affects the healing of the extended tissue...

AI Technical Summary

Problems solved by technology

The output of the temperature sensing circuit of the thick film circuit of the blade body is connected with the temperature detection and signal transformation circuit of the power output control host through wires, and the output of the power generation circuit in the control host is connected with the electricity / power in the thick film circuit of the blade body through wires. Thermal power converter connection, the structure of the scalpel is relatively complex, the scalpel is made of high-speed steel substrate and ceramic substrate, the material is fragile and brittle during use, resulting in short or interrupted service life, the scalpel of ceramic substrate It is easily damaged during the operation and affects the heat conduction effect, thereby affecting the operation and increasing the risk of re-injury during the treatment period of the patient. In addition, the temperature control of the ceramic substrate is not accurate during work, and the temperature control compensation is insufficient, which makes the blade warm up. , The temperature recovery is not enough, and the expected use effect cannot be achieved, which is not conducive to popularization and application

[0004] In order to overcome the defects, U.S. Patent Nos. US3768482, US 4219025, and US4231071 describe that the blades of the device are equipped with multi-point parallel or serial structure heating points. Insufficient temperature recovery, because the blade has a multi-point heating structure, the heating point cannot conduct a sufficient amount of heat from the proximal end to the edge of the blade. In this case, the cutting rate and depth are limited. Compared with the entire blade, the heating area is small and the temperature rises The speed is slow, which further leads to limited selection of substrates, and it is difficult to maintain the sharpness of the edge of the blade, which is not conducive to market promotion and application

Since the blades are sterilized, the handles used repeatedly cannot be sterilized, and the slots for inserting the blades in the handles cannot be sterilized. Therefore, cross-infection is likely to occur when operations are performed in the future. This plug structure cannot meet the current market requirements and is not conducive to domestic use and promotion

Images