Patent ID: 6077288
Filing Date: 2000-06-20
Classification: A61B

Abstract:
A valved trocar jacket tube, comprising:a first cylindrical elastic member having an opening with a predetermined sectional area;closing means including a first ring for securing one end of said first cylindrical elastic member and a second ring for securing another end of said first cylindrical elastic member, said first and second rings rotating relatively in the opposite directions respectively for closing said opening from an opened state;a second cylindrical elastic member, one end of which being attached to one of said first and second rings;a ring member, which is elastically deformable and provided at another end of said second cylindrical elastic member; anda fluid container provided at an upper part of an outer side of said second cylindrical elastic member, which is inflated to have a ring shape by the increase of an inner pressure generated by injection of a fluid;wherein:said first cylindrical elastic member is positioned outside an incised portion of a diseased part and functions as a valve;said second cylindrical elastic member is positioned from outside to inside of said incised portion of said diseased part and maintains said incised portion at an opened state;said ring member is positioned inside said incised portion of said diseased part and engaged with said incised portion of said diseased part; andsaid fluid container is positioned outside said incised portion of said diseased part and fits securely said second cylindrical elastic member to side walls of said incised portion of said diseased part.