Electric knife system based on biomedical signal control and control method of electric knife system

Abstract

The invention provides an electric knife system based on biological signal control. The electric knife system is provided with an electric knife system control loop and comprises an electroencephalogram signal acquisition module and an R wave identification and triggering circuit, wherein the electroencephalogram signal acquisition module comprises a passive linear network, a right leg drive circuit and an analog-digital converter, and the R wave identification and triggering circuit is provided with an R wave identification and triggering program, an R-R period timing program and an electroencephalogram signal starting electric knife control program. By virtue of the design principle of synchronizing triggering and starting the electric knife system by virtue of a body surface electroencephalogram R wave, an electric knife is only triggered and started by the R wave and then enters a ventricular refractory period (VRP) of a pacemaker, if interference occurs, the VRP can be continuously restarted, a noise reversing (NR) function of the pacemaker can be triggered, the pacing impulse is not inhibited, so that the electric knife is prevented from being started and used randomly, and the electric knife system stays at a ventricular alertness period, inhibits the release risk of the ventricular pacing pulse, and has a beneficial effect of improving the medical intelligent control and the safety.

Description

technical field [0001] The invention relates to the technical field of medical equipment auxiliary devices, in particular to an electric knife system controlled based on biomedical signals and a control method thereof. Background technique [0002] For patients who have been implanted with artificial permanent cardiac pacemakers and need surgery, the use of high-frequency electrocautery may interfere with the work of the pacemaker, especially for patients who are dependent on the pacemaker, which may lead to inhibition of pacing pulses and cardiac arrest. Therefore, before using an electric knife in a surgical operation, it is usually necessary to ask a cardiologist to evaluate the working condition of the patient's pacemaker, program control and adjust the necessary parameters. In the international authoritative guidelines, the following recommendations are made for patients with implanted pacemakers: 1. It is necessary to provide pacemaker programming data in the previous ...

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Problems solved by technology

2. For surgery above the umbilical cord, it is recommended to program the electrode as bipolar sensing and pacing. For dependent patients, it must be programmed as DOO or VOO before operation, otherwise the operation of the electrosurgical system may interfere with the work of the pacemaker, and seriously endanger the life of the patient.

However, doctors and technicians with professional knowledge of pacemakers and expensive pacemaker program controllers have not been popularized in primary hospitals. If there is an operation requiring an electric knife, it must be transferred to a higher-level hospital. For patients who urgently need surgery, treatment may also be delayed. Even surgical operations that can be carried out in primary hospitals have to be transferred to higher-level hospitals for safety reasons because the local hospitals do not have the corresponding pacemaker program control conditions. The economic burden of national medical insurance wastes relatively limited medical resources

In addition, even in a qualified upper-level hospital, the pacing mode of the patient needs to be programmed to be DOO or VOO before the operation. During the entire operation process and postoperative anesthesia recovery, it is time-consuming for professionals to restore the pacemaker mode to the preoperative working mode again. For several hours or even more than 10 hours, it requires cardiovascular specialists to go back and forth several times with the heavy-loaded pacemaker programmer, and the current subspecialty classification of cardiovascular medicine is very detailed, not all physicians can program pacemakers, only those who are engaged in Physicians who work on pacemaker implantation have the technology to program the pacemaker, and the time is often delayed due to the lack of these technicians who cannot be in place in time. During this period, the pacemaker works in a non-sensing mode, which will cause competing heart rhythms and affect patients. If the pacing pulse falls into the ventricular fibrillation period 30ms before the peak of the ECG T wave, there will be a risk of malignant ventricular arrhythmia

[0003] Defects of the current electrosurgical system: For patients with implanted pacemakers, especially those who are dependent on pacemakers, there is no electrosurgical system that can be used without adjusting the parameters and modes of the pacemaker

This is because the current electrosurgical system is randomly activated and used by the surgeon. If the electrosurgical unit is activated or used during the ventricular vigilance period during the pacemaker interval, the release of ventricular pacing pulses will be inhibited. For dependent patients, it may lead to cardiac arrest and life-threatening

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