Surgical penetration and dissection instrument
First Claim
1. A surgical instrument for penetrating or dissecting bodily tissue, said instrument comprising a generally cylindrical, elongated hollow shaft having a longitudinal axis and proximal and distal ends, said hollow shaft having a lumen therethrough with a diameter sized to slidably receive an endoscope therein from said shaft proximal end to said shaft distal end;
- a hub attached to said shaft proximal end having a passageway therethrough communicating with said shaft lumen; and
an endoscope locking assembly on said hub, said locking assembly including a camming member therein, said camming member terminating at an arcuate camming edge surface;
wherein when said endoscope is received in said shaft lumen, said locking assembly is actuable from an open position wherein said arcuate camming edge surface of said camming member of said locking assembly is spaced from said shaft lumen and disengaged from said endoscope, to a closed position wherein said arcuate camming edge surface constricts said shaft lumen and engages said endoscope so as to prevent substantial movement thereof.
1 Assignment
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Accused Products
Abstract
A surgical instrument for penetrating or dissecting bodily tissue which provides for the capability for simultaneous visualization during penetration or dissection is disclosed. An endoscope can be inserted through the hollow shaft of the instrument to visualize the penetration or dissection. A locking assembly is featured which enables the user to initially slide the endoscope through the hollow shaft for proper positioning before the instrument is advanced into tissue, and then lock the endoscope in place to prevent substantial movement of the endoscope during advancement into tissue.
171 Citations
7 Claims
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1. A surgical instrument for penetrating or dissecting bodily tissue, said instrument comprising a generally cylindrical, elongated hollow shaft having a longitudinal axis and proximal and distal ends, said hollow shaft having a lumen therethrough with a diameter sized to slidably receive an endoscope therein from said shaft proximal end to said shaft distal end;
- a hub attached to said shaft proximal end having a passageway therethrough communicating with said shaft lumen; and
an endoscope locking assembly on said hub, said locking assembly including a camming member therein, said camming member terminating at an arcuate camming edge surface;
wherein when said endoscope is received in said shaft lumen, said locking assembly is actuable from an open position wherein said arcuate camming edge surface of said camming member of said locking assembly is spaced from said shaft lumen and disengaged from said endoscope, to a closed position wherein said arcuate camming edge surface constricts said shaft lumen and engages said endoscope so as to prevent substantial movement thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a hub attached to said shaft proximal end having a passageway therethrough communicating with said shaft lumen; and
Specification