A control method and device for self-adaptive cutting and hemostasis of ultrasonic knife tissue

Abstract

The invention discloses a control method and device for self-adaptive cutting and hemostasis of ultrasonic scalpel tissue. Including: controlling the tool driving module to generate the drive signal, controlling the signal generator to generate the detection signal with a preset frequency, obtaining the feedback signal generated by the target biological tissue collected by the signal collector, and calculating the bioimpedance of the target biological tissue, according to the target biological tissue The biological impedance determines the target current value or target voltage value of the driving signal that the tool driving module needs to generate; adjusts the driving signal generated by the tool driving module according to the target current value or target voltage value. The technical solution provided by the embodiments of the present invention can determine the target current value or target voltage value of the driving signal applicable to the biological impedance of the target biological tissue according to the biological impedance of the target biological tissue, and then adjust the driving signal generated by the tool driving module, In order to make the cutter work in a state of high cutting efficiency and small thermal damage.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of medical devices, and in particular to a method and device for controlling hemostasis through self-adaptive tissue cutting by an ultrasonic knife. Background technique [0002] Modern electrosurgery has solved the shortcomings of bleeding in traditional scalpel surgery. The most widely used are high-frequency electrosurgical scalpel and ultrasonic scalpel. Among them, ultrasonic scalpel can make the therapeutic blade Mechanical oscillation at a certain frequency vaporizes the water molecules in the tissue, breaks the hydrogen bonds of the protein, and disintegrates the cells, thereby causing the tissue to be cut or coagulated. Due to the low temperature of the knife head, the thermal damage and potential danger are relatively small . [0003] The human body contains a variety of biological tissue types, such as muscle, fat, nerves, and blood vessels. The biological impedance of d...

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Problems solved by technology

[0003] The human body contains a variety of biological tissue types, such as muscle, fat, nerves, and blood vessels. The biological impedance of different types of biological tissue is quite different, so the optimal current value of the applicable AC excitation signal is different. However, the existing technology The ultrasonic knife can not generate AC excitation signals for the type of biological tissue according to the biological impedance of the biological tissue, so that in the process of cutting and hemostasis of the biological tissue, it will either cause large thermal damage or the cutting efficiency is not high

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