北京生物醫(yī)學(xué)工程

用于單極切割的智能電外科設(shè)備的研制

Design of intelligence electrosurgical equipment for monopolar cutting

作者：趙忠源王鴻睿林洪宇楊謹如孫子杰雷德秀袁英凡游國鵬周宇

單位：上海科技大學(xué)（上海200093;<br />西藏自治區(qū)第二人民醫(yī)院（拉薩 850030）<br />通信作者：周宇。E-mail: [email protected]

關(guān)鍵詞：電外科設(shè)備；單極切割；阻抗檢測；功率控制；熱損傷；切割阻力

分類號：R318. 04

出版年·卷·期（頁碼）：2022·41·5（458-464）

摘要：

目的研制一臺用于單極切割組織的智能電外科設(shè)備以解決在恒功率模式下使用高頻電刀無法同時避免出現(xiàn)熱損傷和切割阻力的問題。方法設(shè)備的硬件電路為一個閉環(huán)可控射頻能量發(fā)生器，以PID算法為基礎(chǔ)配合硬件電路實現(xiàn)了恒功率模式，以智能電切算法和PID算法為基礎(chǔ)配合硬件電路實現(xiàn)了智能切割模式。在恒功率模式20W、40W、60W、80W及智能切割模式下，對體外豬肉組織進行切割，驗證智能切割模式對熱損傷和切割阻力的控制能力。結(jié)果設(shè)備的兩個模式均可正常工作。恒功率模式下輸出功率設(shè)置為20W時組織熱損傷最小，切割時阻力最大；恒功率模式下輸出功率設(shè)置為80W時切割時阻力最小，組織熱損傷最大；智能切割模式下，熱損傷大小只大于恒功率模式20W對照組，切割阻力只大于恒功率模式80W對照組。結(jié)論智能電外科設(shè)備的智能切割模式可以通過控制輸出功率平衡切割阻力、熱損傷，使二者同時保持在較低水平。

Objective To develop an intelligent electrosurgical equipment for monopolar cutting tissue ，and to solve the problem that thermal damage and cutting resistance cannot be avoided at the same time when using high-frequency electric knife in constant power mode.Methods The hardware circuit of the equipment is a closed-loop controllable RF energy generator. The constant power mode is realized based on an algorithm called PID and hardware circuit. The intelligent cutting mode is realized based on the intelligent electric cutting algorithm, PID and hardware circuit. The control ability of intelligent cutting mode for thermal damage and cutting resistance is proved by the comparative experiments of the two modes. In the constant power mode, the output power is set to 20W, 40W, 60W and 80W as four groups, and the intelligent cutting mode as one group to cut the in vitro pork tissue. Results Both modes of the equipment can work correctly. In the validation experiment, in the constant power mode, when the output power is set to 20W, the tissue thermal damage is the smallest, and the resistance is the largest during cutting, up to more than 1N; in constant power mode, when the output power is set to 80W, the resistance during cutting is the smallest, lower than 0.2N, the tissue thermal damage is the largest; in intelligent cutting mode, the thermal damage is only greater than that in constant power mode, the output power is set as 20W control group, and the cutting resistance is only greater than that in constant power mode, the output power is set as 80W control group. Conclusions The intelligent cutting mode of intelligent electrosurgical equipment can balance the cutting resistance and thermal damage by controlling the output power to keep them at a low level at the same time.

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