Retractable safety trocar with multiple triggering and/or moving components
First Claim
1. A safety penetrating instrument for establishing a portal in the wall of an anatomical cavity comprisinga housing;
- an elongate portal sleeve for introducing medical instruments into the anatomical cavity, said portal sleeve having a proximal end mounted by said housing and a distal end for introduction in the anatomical cavity, said portal sleeve being movable proximally relative to said housing during penetration of the anatomical cavity wall from an extended rest position to a retracted position;
portal sleeve bias means for biasing said portal sleeve distally toward said rest position;
a penetrating member disposed within said portal sleeve and having a distal end for penetrating the anatomical cavity wall, said penetrating member being movable relative to said portal sleeve between an extended position where said penetrating member distal end protrudes from said portal sleeve distal end and a retracted position where said penetrating member distal end is proximally spaced from said portal sleeve distal end, said penetrating member being removable from said housing and said portal sleeve;
retracting means for moving said penetrating member from said penetrating member extended position to said penetrating member retracted position;
means for manually moving said penetrating member from said penetrating member retracted position to said penetrating member extended position;
locking means for locking said penetrating member in said penetrating member extended position while permitting a predetermined amount of proximal movement of said penetrating member during penetration of the anatomical cavity wall;
penetrating member bias means for biasing said penetrating member distally in said penetrating member extended position while permitting proximal movement of said penetrating member during penetration of the anatomical cavity wall; and
releasing means responsive to penetration of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said retracting means to move said penetrating member proximally from said penetrating member extended position to said penetrating member retracted position.
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Accused Products
Abstract
A safety penetrating instrument for establishing a portal in the wall of an anatomical cavity includes a housing, a distally-biased portal sleeve movable proximally during penetration from an extended rest position to a retracted position, a penetrating member disposed within the portal sleeve and movable relative thereto between an extended position where a distal end of the penetrating member protrudes from the portal sleeve distal end and a retracted position where the penetrating member distal end is proximally spaced from the portal sleeve distal end, a retracting mechanism for moving the penetrating member from the penetrating member extended position to the penetrating member retracted position, a locking mechanism for locking the penetrating member in the penetrating member extended position while permitting a predetermined amount of proximal movement of the penetrating member during penetration of the anatomical cavity wall, a penetrating member bias member for biasing the penetrating member distally in the penetrating member extended position while permitting the penetrating member to move proximally during penetration of the anatomical cavity wall, and a releasing mechanism responsive to penetration of the anatomical cavity wall for triggering release of the locking mechanism to permit the retracting mechanism to move the penetrating member proximally to the penetrating member retracted position.
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Citations
11 Claims
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1. A safety penetrating instrument for establishing a portal in the wall of an anatomical cavity comprising
a housing; -
an elongate portal sleeve for introducing medical instruments into the anatomical cavity, said portal sleeve having a proximal end mounted by said housing and a distal end for introduction in the anatomical cavity, said portal sleeve being movable proximally relative to said housing during penetration of the anatomical cavity wall from an extended rest position to a retracted position; portal sleeve bias means for biasing said portal sleeve distally toward said rest position; a penetrating member disposed within said portal sleeve and having a distal end for penetrating the anatomical cavity wall, said penetrating member being movable relative to said portal sleeve between an extended position where said penetrating member distal end protrudes from said portal sleeve distal end and a retracted position where said penetrating member distal end is proximally spaced from said portal sleeve distal end, said penetrating member being removable from said housing and said portal sleeve; retracting means for moving said penetrating member from said penetrating member extended position to said penetrating member retracted position; means for manually moving said penetrating member from said penetrating member retracted position to said penetrating member extended position; locking means for locking said penetrating member in said penetrating member extended position while permitting a predetermined amount of proximal movement of said penetrating member during penetration of the anatomical cavity wall; penetrating member bias means for biasing said penetrating member distally in said penetrating member extended position while permitting proximal movement of said penetrating member during penetration of the anatomical cavity wall; and releasing means responsive to penetration of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said retracting means to move said penetrating member proximally from said penetrating member extended position to said penetrating member retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A safety penetrating instrument for establishing a portal in the wall of an anatomical cavity comprising
a housing: -
an elongate portal sleeve having a proximal end mounted by said housing and a distal end for introduction in the anatomical cavity, said portal sleeve being movable relative to said housing between an extended rest position and a retracted position; portal sleeve bias means for biasing said portal sleeve distally toward said rest position; a penetrating member disposed within said portal sleeve and having a distal end for penetrating the anatomical cavity wall, said penetrating member being movable relative to said portal sleeve between an extended position where said penetrating member distal end protrudes from said portal sleeve distal end and a retracted position where said penetrating member distal end is proximally spaced from said portal sleeve distal end; retracting means for moving said penetrating member from said penetrating member extended position to said penetrating member retracted position; means for manually moving said penetrating member from said penetrating member retracted position to said penetrating member extended position; locking means for locking said penetrating member extended position while permitting a predetermined amount of proximal movement of said penetrating member during penetration of the anatomical cavity wall; penetrating member bias means for biasing said penetrating member distally in said penetrating member extended position while permitting proximal movement of said penetrating member during penetration of the anatomical cavity wall; and releasing means responsive to penetration of said safety penetrating instrument into the anatomical cavity for triggering release of said locking means to permit said retracting means to move said penetrating member proximally to said penetrating member retracted position; wherein said penetrating member distal end extends distally from a junction where a transverse dimension of said penetrating member changes and wherein said portal sleeve distal end is located distally of said junction when said penetrating member and said portal sleeve are in said respective extended positions.
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Specification