The device comprises a substantially cylindrical support member which carries or in part defines an inflatable cuff. The cuff extends for only a portion of the length of said support member. Means are provided for inflating the cuff with air and transmitting changes in pressure within the cuff to a display...http://www.google.fr/patents/US4776347?utm_source=gb-gplus-shareBrevet US4776347 - Device for devloping control of spincter-type muscles
Device for devloping control of spincter-type muscles
