| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mechanism which can address an issue regarding conventional seal. <P>SOLUTION: A surgical access device adapted for removable positioning within a percutaneous tissue tract, includes a housing; a constricting mechanism positioned within the housing and including a proximal member in mechanical cooperation with a distal member to permit relative rotation therebetween such that the constricting mechanism is repositionable between a first state, in which the constricting mechanism is adapted to permit insertion of a surgical instrument, and a second state, in which the constricting mechanism is adapted to engage the surgical instrument to limit transverse movement thereof; and an access sleeve extending distally from the housing. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
