Muscle biopsy system for extracting fibrous muscular tissue

A needle biopsy is a kind of the inspection to extract the muscles under the skin with a needle, the inspection method accelerated the research on muscle characteristic and a sick of muscle. Current needle can extract only the muscular tissue of a limited structure. Based on the above background, we work in research and development of novel needle biopsy system in order to extract muscle tissue with form of fiber. The system consists of an ultrasonic device, an angular adjustment implement, and a needle. The needle has curved shape so penetrates from skin surface perpendicularly and takes route parallel to bone in muscle tissue. When the needle is inserting in muscle, pressure are given for muscle tissue. And then reaction force was given to the tip of needle. We designed prototype of the needle´s tip using reaction force to close. We report in this paper developing needle biopsy system and designing tip of needle.