Safety penetrating instrument having a triggered portal sleeve 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 for introducing medical instruments into the anatomical cavity, said 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 and having a distal end for penetrating tissue said penetrating member being removable from said portal sleeve;
housing means receiving said portal sleeve proximal end for mounting said portal sleeve to be movable relative to said housing means between an extended position where said portal sleeve distal end protrudes distally from said penetrating member distal end and a retracted position where said portal sleeve distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end;
bias means for biasing said portal sleeve to move distally toward said extended position and for permitting said portal sleeve to move proximally toward said retracted position;
handle means coupled with said portal sleeve for manually moving said portal sleeve proximally to said retracted position;
locking means for engaging said portal sleeve to lock said portal sleeve 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 portal sleeve to said extended position.
0 Assignments
0 Petitions
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 distally biased portal sleeve for introducing the portal sleeve through a cavity wall into the anatomical cavity, the portal sleeve 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 is provided manually moving the portal sleeve to the retracted position, and a locking and releasing mechanism locks the portal sleeve in the retracted position and releases the portal sleeve 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.
-
Citations
17 Claims
-
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 for introducing medical instruments into the anatomical cavity, said 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 and having a distal end for penetrating tissue said penetrating member being removable from said portal sleeve; housing means receiving said portal sleeve proximal end for mounting said portal sleeve to be movable relative to said housing means between an extended position where said portal sleeve distal end protrudes distally from said penetrating member distal end and a retracted position where said portal sleeve distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; bias means for biasing said portal sleeve to move distally toward said extended position and for permitting said portal sleeve to move proximally toward said retracted position; handle means coupled with said portal sleeve for manually moving said portal sleeve proximally to said retracted position; locking means for engaging said portal sleeve to lock said portal sleeve 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 portal sleeve to said extended position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. 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 for introducing medical instruments into the anatomical cavity, said 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 and having a distal end for penetrating tissue and a proximal end said penetrating member being removable from said portal sleeve; 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; housing means receiving said portal sleeve proximal end for mounting said portal sleeve to be movable relative to said housing means between an extended position where said portal sleeve distal end protrudes distally from said penetrating member distal end and a retracted position where said portal sleeve distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; portal sleeve bias means for biasing said portal sleeve to move distally toward said extended position and for permitting said portal sleeve to move proximally toward said retracted position; locking means for engaging said portal sleeve to lock said portal sleeve 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 portal sleeve bias means to move said portal sleeve to said extended position. - View Dependent Claims (15, 16)
-
-
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 for introducing medical instruments into the anatomical cavity, said 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 and having a distal end for penetrating tissue said penetrating member being removable from said portal sleeve; housing means receiving said portal sleeve proximal end for mounting said portal sleeve to be movable relative to said housing means between an extended position where said portal sleeve distal end protrudes distally from said penetrating member distal end and a retracted position where said portal sleeve distal end is disposed proximally of said penetrating member distal end to expose said penetrating member distal end; bias means for biasing said portal sleeve to move distally toward said extended position and for permitting said portal sleeve to move proximally toward said retracted position; locking means for engaging said portal sleeve to lock said portal sleeve in said retracted 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 portal sleeve to said extended position.
-
Specification