Safety penetrating instrument having a triggered safety member for establishing an endoscopic portal in an anatomical cavity wall
First Claim
1. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity for performing endoscopic procedures comprisingan elongate, tubular portal sleeve having a distal end for positioning in the anatomical cavity and a proximal end for positioning externally of the anatomical cavity wall;
- a penetrating member disposed in said portal sleeve having a distal end for penetrating tissue;
a safety member disposed within said portal sleeve and having a distal end, said safety member being movable relative to said penetrating member and said portal sleeve between an extended position where said safety member distal end protrudes distally from said penetrating member distal end and said portal sleeve distal end and a retracted position where said safety member distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end;
bias means for biasing said safety member to move distally toward said extended position and for permitting said safety member to move proximally toward said retracted position;
handle means coupled with said safety member for manually moving said safety member proximally relative to said portal sleeve from said extended position to said retracted position;
locking means for engaging said safety member to prevent distal movement of said safety member from said retracted position to said extended position; and
releasing means responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said bias means to move said safety member to said extended position.
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Accused Products
Abstract
A safety penetrating instrument for establishing a portal in an anatomical cavity for performing endoscopic procedures includes a penetrating member received within a portal sleeve for introducing the portal sleeve through a cavity wall into the anatomical cavity, a distally biased safety member having a distal end movable between an extended position protecting a sharp tip of the penetrating member and a retracted position exposing the sharp tip, a handle for manually moving the safety member to the retracted position and a locking and releasing mechanism for locking the safety member in the retracted position and releasing the safety member to return to the extended position in response to distal movement of an operating member upon penetration of the safety penetrating instrument into the anatomical cavity, the operating member being preferably carried by the penetrating member.
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Citations
24 Claims
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1. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity for performing endoscopic procedures comprising
an elongate, tubular portal sleeve having a distal end for positioning in the anatomical cavity and a proximal end for positioning externally of the anatomical cavity wall; -
a penetrating member disposed in said portal sleeve having a distal end for penetrating tissue; a safety member disposed within said portal sleeve and having a distal end, said safety member being movable relative to said penetrating member and said portal sleeve between an extended position where said safety member distal end protrudes distally from said penetrating member distal end and said portal sleeve distal end and a retracted position where said safety member distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; bias means for biasing said safety member to move distally toward said extended position and for permitting said safety member to move proximally toward said retracted position; handle means coupled with said safety member for manually moving said safety member proximally relative to said portal sleeve from said extended position to said retracted position; locking means for engaging said safety member to prevent distal movement of said safety member from said retracted position to said extended position; and releasing means responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said bias means to move said safety member to said extended position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity for performing endoscopic procedures comprising
an elongate, tubular portal sleeve having a distal end for positioning in the anatomical cavity and a proximal end for positioning externally of the anatomical cavity wall; -
a penetrating member disposed in said portal sleeve having a distal end for penetrating tissue and a proximal end; hub means receiving said penetrating member proximal end; penetrating member bias means for biasing said penetrating member distally relative to said hub means and permitting proximal movement of said penetrating member relative to said hub means in response to a force on said penetrating member distal end; a safety member disposed within said portal sleeve and having a distal end, said safety member being movable relative to said penetrating member and said portal sleeve between an extended position where said safety member distal end protrudes distally from said penetrating member distal end and said portal sleeve distal end and a retracted position where said safety member distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; safety member bias means for biasing said safety member to move distally toward said extended position and for permitting said safety member to move proximally toward said retracted position; locking means for engaging said safety member to prevent distal movement of said safety member from said retracted position to said extended position; and releasing means responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said safety member bias means to move said safety member to said extended position. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity for performing endoscopic procedures comprising
an elongate, tubular portal sleeve having a distal end for positioning in the anatomical cavity and a proximal end for positioning externally of the anatomical cavity wall; -
a penetrating member disposed in said portal sleeve having a distal end for penetrating tissue; a safety member disposed within said portal sleeve and having a distal end, said safety member being movable relative to said penetrating member and said portal sleeve between an extended position where said safety member distal end protrudes distally from said penetrating member distal end and said portal sleeve distal end and a retracted position where said safety member distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; bias means for biasing said safety member to move distally toward said extended position and for permitting said safety member to move proximally toward said retracted position; locking means for engaging said safety member in said retracted position to prevent distal movement of said safety member relative to said portal sleeve such that said safety member cannot move from said retracted position to said extended position; and releasing means including an operating member movable distally responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said bias means to move said safety member to said extended position.
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24. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity for performing endoscopic procedures comprising
an elongate, tubular portal sleeve having a distal end for positioning in the anatomical cavity and a proximal end for positioning externally of the anatomical cavity wall; -
a penetrating member disposed in said portal sleeve having a distal end for penetrating tissue; a safety member disposed within said portal sleeve and having a distal end, said safety member being movable relative to said penetrating member and said portal sleeve between an extended position where said safety member distal end protrudes distally from said penetrating member distal end and said portal sleeve distal end and a retracted position where said safety member distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; bias means for biasing said safety member to move distally toward said extended position and for permitting said safety member to move proximally toward said retracted position; handle means coupled with said safety member for manually moving said safety member proximally relative to said portal sleeve from said extended position to said retracted position; locking means for engaging said safety member to lock said safety member in said retracted position; and releasing means responsive to entry of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said bias means to move said safety member to said extended position.
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Specification