what is a spinal cord stimulator

{"cid":"91190254","title":"Hemiplegia Rehabilitation Equipment for Nerve and Muscle Stimulator Medical Supply","imgUrl":"https:\/\/img.ismap.com\/nimg\/35\/ef\/900040222b9833f53627fa71bdf0-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"XFT","Model Number":"XFT-2001D","Minimum Order Quantity":"1 Unit\/Units","Delivery Time":"1-2 working days","Place of Origin":"Guangdong, China (Mainland)","Supply Ability":"100 Unit\/Units per Month","Packaging Details":"Portable metal box with export standard carton box","Certification":"CE","Payment Terms":"T\/T","Instrument classification":"Class II","Name":"Hemiplegia Rehabilitation Equipment for Nerve and Muscle Stimulator","Certificate":"CE, FDA51K, ISO13485","Classification":"Type BF Equipment","Properties":"Rehabilitation therapy supplies","Mode":"Train mode (exercise) and Gait mode (walking)","Color":"Gray & yellow","Power supply":"DC3.7V, rechargeable lithium battery","Pulse Width":"25-300 microseconds","Frequency":"16-33 Hz","Weight":"75g","Port":"Shenzhen, China"}}