Diamond-film electrothermal scalpel and temperature control method thereof

Abstract

The invention discloses a diamond-film electrothermal scalpel and a temperature control method thereof and belongs to the technical field of medical instruments. The diamond-film electrothermal scalpel comprises a blade, a handle, a control wire and a control device which are connected in sequence. The blade comprises a blade base and a diamond film layer that covers the blade base; the blade is provided with an electrothermal converter and a heat-sensitive resistor used with each other; the electrothermal converter and the heat-sensitive resistor are in contact with the diamond film layer. The electrothermal converter is used to heat the blade. The heat-sensitive resistor is used to detect a surface temperature of the blade. The invention also discloses a temperature control method of the diamond-film electrothermal scalpel. The diamond-film electrothermal scalpel can gain improved sharpness; excellent heat conductivity of the diamond film also enables heat to spread quickly to the whole blade when the tail of the blade is heated by the electrothermal converter; the temperature control method of the invention makes the temperature changes of the head and edge of the scalpel blade more uniform, so that temperature control precision is improved greatly.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a diamond film electric heating scalpel and a temperature control method thereof. Background technique [0002] Electrothermal scalpel is widely used in clinical surgery. It is a new type of surgical instrument that can combine the functions of cutting and hemostasis. Compared with high-frequency electric scalpel, electric scalpel will not produce burnt smell, smoke, and will not cause strong muscle contraction. [0003] Although the existing externally heated electric scalpels are easy to use, general materials such as carbon steel, stainless steel, alloys, and ceramics (201410081515.9) have poor thermal conductivity, which makes the temperature control of the scalpel poor. The scalpel does not solve the problem of poor temperature control accuracy of the externally heated scalpel; while the internally heated electric scalpel has a complex structure, and the...

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Problems solved by technology

[0003] Although the existing externally heated electric scalpels are easy to use, general materials such as carbon steel, stainless steel, alloys, and ceramics (201410081515.9) have poor thermal conductivity, which makes the temperature control of the scalpel poor. The scalpel does not solve the problem of poor temperature control accuracy of the externally heated scalpel; while the internally heated electric scalpel has a complex structure, and the thickness of the blade is relatively large, which affects the sharpness of the blade and is troublesome to maintain, as disclosed in ZL99114117.2 The internal heating scalpel, because the non-stick layer used on the surface of the blade is Teflon material, the thermal conductivity is poor, which affects the accuracy of the temperature control of the blade, and the heat conductive metal layer used is a metal with poor hardness, which affects the sharpness of the blade

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