Patent ID: 8517918
Filing Date: 2013-08-27
Classification: A61B,A61M

Abstract:
1. An optical access apparatus for reception of an endoscope to permit visualization during passage through tissue, which comprises: an access member dimensioned for insertion through body tissue and having proximal and distal ends, the access member defining a longitudinal axis and having a longitudinal opening for receiving the endoscope, the access member having a penetrating end adjacent the distal end adapted to pass through tissue, the penetrating end being at least partially transparent to permit visualization of tissue with the endoscope; a locking collet coaxially mounted relative to the longitudinal axis of the access member, the locking collet having internal surfaces, defining an internal passage to permit passage of the endoscope, the locking collet including a proximal collar which is divided into collar sections by partial slots, the collar sections adapted to be deflected radially inwardly relative to the longitudinal axis of the access member; and a manual member coaxially mounted about the locking collet, the manual member adapted for rotational movement about the longitudinal axis, and cooperating to drive the locking collet in a distal direction relative to and along the longitudinal axis of the access member and deflecting the collar sections radially inwardly to reduce an internal dimension of the internal passage of the locking collet to thereby cause the internal surfaces of the locking collet to securely engage the endoscope, the manual member being fixed from longitudinal movement relative to the access member.