การพัฒนาเครื่องกระตุ้นไฟฟ้าเพื่อสร้างการตอบสนองของเส้นประสาทที่เสียหายจากการบาดเจ็บบริเวณไขสันหลัง

Abstract

In the course of time, a spinal cord injury has a significant impact on life. If complications are not effectively managed, they could lead to things like work related to nervous system malfunctions, hypotension and abnormalities in muscle mass etc. At present, there is a treatment method for increasing muscle and bone mass or treatment by rehabilitation according to the principles of rehabilitation medicine which takes a long time and has a high cost Because it requires specific techniques and advanced expertise in the treatment. Another method of treatment that has positive results for patients is to maintain the condition of the denervated muscle through functional electrical stimulation, which is A form of electrical stimulation that is widely used in the medical industry physical therapy and rehabilitation both clinical and research For this reason, this engineering project focuses on developing an experimental board for commanding parameters in functional electrical stimulation for specific stimulation and rehabilitation of patients to achieve function in the Denervated Muscle which consists of generating 3 types of waveforms which are Square wave, Triangle wave and Sine wave, as well as adjustable frequency and duty cycle, with long service life. It can be used up to 5 hours 55 minutes when powered by a Power Unit and can adjust the voltage up to 100 volts from the high voltage booster circuit. The discrepancy while adjusting the voltage was 0.9245 percent and the Root Mean Squared Error was 0.999 percent. The human skin equivalent circuit showed a maximum current output of 123.96 mA, a ทาonophasic pulse test when applied at a voltage of 5 volts to 100 volts and a command wave with biphasic pulse when supplying voltage from 15 volts to 90 volts by measuring peak to peak voltage. It was found that the average percentage error was about 3.127% and 3.951% respectively.