Voluntary participation of hemiplegic patients is crucial for functional electrical stimulation therapy.A wearable functional electrical stimulation system has been proposed for real-time volitional hand motor functio...Voluntary participation of hemiplegic patients is crucial for functional electrical stimulation therapy.A wearable functional electrical stimulation system has been proposed for real-time volitional hand motor function control using the electromyography bridge method.Through a series of novel design concepts,including the integration of a detecting circuit and an analog-to-digital converter,a miniaturized functional electrical stimulation circuit technique,a low-power super-regeneration chip for wireless receiving,and two wearable armbands,a prototype system has been established with reduced size,power,and overall cost.Based on wrist joint torque reproduction and classification experiments performed on six healthy subjects,the optimized surface electromyography thresholds and trained logistic regression classifier parameters were statistically chosen to establish wrist and hand motion control with high accuracy.Test results showed that wrist flexion/extension,hand grasp,and finger extension could be reproduced with high accuracy and low latency.This system can build a bridge of information transmission between healthy limbs and paralyzed limbs,effectively improve voluntary participation of hemiplegic patients,and elevate efficiency of rehabilitation training.展开更多
An inexpensive stimulation system for recording eye-blink responses elicited by taste stimuli has been developed using a manually controlled syringe and tasimetric sensor. The system requires neither an intra-oral dev...An inexpensive stimulation system for recording eye-blink responses elicited by taste stimuli has been developed using a manually controlled syringe and tasimetric sensor. The system requires neither an intra-oral device nor clamping of the head and tongue for natural eye-blink responses. The data recorded by the system have a high temporal resolution that is likely to be sufficient for the analysis of eye-blink responses based on video recordings.展开更多
A review was undertaken of the operation process and development of transcutaneous electrical acupoint stimulation(TEAS)and related devices for TEAS,with the aim to offer a reference for developing an international st...A review was undertaken of the operation process and development of transcutaneous electrical acupoint stimulation(TEAS)and related devices for TEAS,with the aim to offer a reference for developing an international standard for the basic safety and essential performance of the devices.The articles related to TEAS and instruction of devices for TEAS were searched using the EMBASE,MEDLINE,and Web of Science databases with the time period from inception to July 18,2023.In the absence of a parameter description of the stimulators,a multimeter was used to measure the output voltage,resistance,and current.Thirty-two related devices for TEAS were obtained.The safety parameters ofmost devices were neither clearly defined,nor standardized,and in some cases weremissing.There was a noticeable disparity in the upper safety limits of the output current among the devices.The sizes of the skin electrode pads as well as the lengths of the electrode connecting wires of most devices were not clearly indicated.Acupoints on different parts of the human body,including the upper limbs,head,auricle,chest,abdomen,trunk,and lower limbs,required different maximum tolerable current intensities and current densities.It is important to indicate comprehensive output/safety parameters and essential performance for devices for TEAS to meet the need of global distribution,achieve precise stimulation parameters at different acupoints across the human body,and allay any safety concern of national therapeutic device authorities,the regulators,manufacturers,and end users.展开更多
基金supported by the National Natural Science Foundation of China,No.90307013,90707005,61534003the Science&Technology Pillar Program of Jiangsu Province in China,No.BE2013706
文摘Voluntary participation of hemiplegic patients is crucial for functional electrical stimulation therapy.A wearable functional electrical stimulation system has been proposed for real-time volitional hand motor function control using the electromyography bridge method.Through a series of novel design concepts,including the integration of a detecting circuit and an analog-to-digital converter,a miniaturized functional electrical stimulation circuit technique,a low-power super-regeneration chip for wireless receiving,and two wearable armbands,a prototype system has been established with reduced size,power,and overall cost.Based on wrist joint torque reproduction and classification experiments performed on six healthy subjects,the optimized surface electromyography thresholds and trained logistic regression classifier parameters were statistically chosen to establish wrist and hand motion control with high accuracy.Test results showed that wrist flexion/extension,hand grasp,and finger extension could be reproduced with high accuracy and low latency.This system can build a bridge of information transmission between healthy limbs and paralyzed limbs,effectively improve voluntary participation of hemiplegic patients,and elevate efficiency of rehabilitation training.
文摘An inexpensive stimulation system for recording eye-blink responses elicited by taste stimuli has been developed using a manually controlled syringe and tasimetric sensor. The system requires neither an intra-oral device nor clamping of the head and tongue for natural eye-blink responses. The data recorded by the system have a high temporal resolution that is likely to be sufficient for the analysis of eye-blink responses based on video recordings.
基金supported by the National Key R&D Program of China(2022YFC3500501)Science and Technology Innovation Project(CI2023C017YL)of China Academy of Chinese Medical Sciences2021 Qihuang Scholar Support Project(Peijing Rong).
文摘A review was undertaken of the operation process and development of transcutaneous electrical acupoint stimulation(TEAS)and related devices for TEAS,with the aim to offer a reference for developing an international standard for the basic safety and essential performance of the devices.The articles related to TEAS and instruction of devices for TEAS were searched using the EMBASE,MEDLINE,and Web of Science databases with the time period from inception to July 18,2023.In the absence of a parameter description of the stimulators,a multimeter was used to measure the output voltage,resistance,and current.Thirty-two related devices for TEAS were obtained.The safety parameters ofmost devices were neither clearly defined,nor standardized,and in some cases weremissing.There was a noticeable disparity in the upper safety limits of the output current among the devices.The sizes of the skin electrode pads as well as the lengths of the electrode connecting wires of most devices were not clearly indicated.Acupoints on different parts of the human body,including the upper limbs,head,auricle,chest,abdomen,trunk,and lower limbs,required different maximum tolerable current intensities and current densities.It is important to indicate comprehensive output/safety parameters and essential performance for devices for TEAS to meet the need of global distribution,achieve precise stimulation parameters at different acupoints across the human body,and allay any safety concern of national therapeutic device authorities,the regulators,manufacturers,and end users.
