Safety penetrating instrument with triggered penetrating member retraction and safety member protrusion
First Claim
1. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity comprisinga hub;
- a penetrating member mounted by said hub and movable relative thereto between a penetrating member extended position and a penetrating member retracted position, said penetrating member having a sharp distal end for penetrating the anatomical cavity wall;
a safety member movable relative to said hub between a safety member retracted position exposing said sharp distal end of said penetrating member when said penetrating member is in said penetrating member extended position and a safety member extended position protecting said sharp distal end of said penetrating member;
retracting means for moving said penetrating member proximally relative to said hub from said penetrating member extended position to said penetrating member retracted position;
extending means for moving said safety member distally relative to said hub from said safety member retracted position to said safety member extended position;
locking means for locking said penetrating member in said penetrating member extended position and said safety member in said safety member retracted position to prevent distal movement of said safety member relative to said hub beyond said safety member 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 retracting means to move said penetrating member proximally relative to said hub from said penetrating member extended position to said penetrating member retracted position and to permit said extending means to move said safety member distally relative to said hub from said safety member retracted position to said safety member extended position to protect said sharp distal end of said penetrating member.
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Accused Products
Abstract
A safety penetrating instrument includes a penetrating member having a sharp distal end, a safety member movable relative to the penetrating member to protect the sharp distal end of the penetrating member, a safety member extending mechanism, a penetrating member retracting mechanism, a locking mechanism, a biasing mechanism and a releasing mechanism. The extending mechanism moves the safety member distally to a safety member extended position where the safety member distal end is disposed distally of the penetrating member distal end while permitting the safety member to move proximally to a safety member retracted position. The retracting mechanism moves the penetrating member proximally to a retracted position where the penetrating member distal end is disposed proximally of the safety member distal end while permitting the penetrating member to move distally to a penetrating member extended position. The locking mechanism locks the safety member in the safety member retracted position to prevent movement of the safety member to the safety member extended position and locks the penetrating member in the penetrating member extended position. The bias mechanism biases one or both of the safety member and penetrating member distally upon introduction in the anatomical cavity while permitting proximal movement of the members during penetration of the anatomical cavity wall. The releasing mechanism is responsive to distal movement of one or both of the safety member and penetrating member for triggering release of the locking mechanism.
118 Citations
37 Claims
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1. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity comprising
a hub; -
a penetrating member mounted by said hub and movable relative thereto between a penetrating member extended position and a penetrating member retracted position, said penetrating member having a sharp distal end for penetrating the anatomical cavity wall; a safety member movable relative to said hub between a safety member retracted position exposing said sharp distal end of said penetrating member when said penetrating member is in said penetrating member extended position and a safety member extended position protecting said sharp distal end of said penetrating member; retracting means for moving said penetrating member proximally relative to said hub from said penetrating member extended position to said penetrating member retracted position; extending means for moving said safety member distally relative to said hub from said safety member retracted position to said safety member extended position; locking means for locking said penetrating member in said penetrating member extended position and said safety member in said safety member retracted position to prevent distal movement of said safety member relative to said hub beyond said safety member 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 retracting means to move said penetrating member proximally relative to said hub from said penetrating member extended position to said penetrating member retracted position and to permit said extending means to move said safety member distally relative to said hub from said safety member retracted position to said safety member extended position to protect said sharp distal end of said penetrating member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A safety penetrating instrument for penetrating anatomical tissue to gain access to an anatomical cavity comprising
a hub; -
a penetrating member mounted by said hub and movable relative thereto between a penetrating member extended position and a penetrating member retracted position, said penetrating member having a sharp distal end for penetrating anatomical tissue; a safety member having a distal end and being movable relative to said hub between a safety member extended position where said safety member distal end is disposed distally of said sharp penetrating member distal end and a safety member retracted position where said safety member distal end is disposed proximally of said penetrating member distal end; extending means for moving said safety member distally relative to said hub from said safety member retracted position to said safety member extended position; safety member bias means for biasing said safety member distally relative to said hub in said safety member retracted position and for permitting said safety member to move proximally relative to said hub from said safety member retracted position during penetration of the anatomical tissue and distally relative to said hub toward said safety member retracted position upon introduction of said safety penetrating instrument in the anatomical cavity; retracting means for moving said penetrating member proximally relative to said hub from said penetrating member extended position where said sharp penetrating member distal end is disposed distally of said safety member distal end and said penetrating member retracted position where said sharp penetrating member distal end is disposed proximally of said safety member distal end; locking means for locking said safety member in said safety member retracted position to prevent distal movement of said safety member relative to said hub beyond said safety member retracted position while permitting proximal movement of said safety member relative to said hub from said safety member retracted position during penetration of the anatomical tissue and for locking said penetrating member in said penetrating member extended position during penetration of the anatomical tissue; and releasing means responsive to movement of said safety member distally toward said safety member retracted position upon introduction of said safety penetrating instrument in the anatomical cavity for triggering release of said locking means to permit said extending means to move said safety member distally relative to said hub from said safety member retracted position to said safety member extended position and to permit said retracting means to move said penetrating member proximally relative to said hub from said penetrating member extended position to said penetrating member retracted position. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A safety penetrating instrument for penetrating anatomical tissue to gain access to an anatomical cavity comprising
a penetrating member having a distal end for penetrating anatomical tissue; -
a safety member having a distal end and being movable relative to said penetrating member from a safety member extended position where said safety member distal end is disposed distally of said sharp penetrating member distal end to a safety member retracted position where said safety member distal end is disposed proximally of said sharp penetrating member distal end; extending means for moving said safety member to said safety member extended position and for permitting movement of said safety member to said safety member retracted position; retracting means for moving said penetrating member proximally relative to said safety member from a penetrating member extended position where said sharp penetrating member distal end is disposed distally of said safety member distal end with said safety member in said safety member retracted position and a penetrating member retracted position where said sharp penetrating member distal end is disposed proximally of said safety member distal end with said safety member in said safety member retracted position; safety member locking means for locking said safety member in said safety member retracted position to prevent movement of said safety member to said safety member extended position during penetration of the anatomical tissue; penetrating member locking means for locking said penetrating member in said penetrating member extended position during penetration of the anatomical tissue; and operating means movable proximally during penetration of the anatomical tissue by said safety penetrating instrument and movable distally upon introduction of said safety penetrating instrument in the anatomical cavity for triggering release of said safety member locking means and said penetrating member locking means to permit said extending means to move said safety member distally to said safety member extended position and said retracting means to move said penetrating member proximally to said penetrating member retracted position. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A safety penetrating instrument for penetrating anatomical tissue to gain access to an anatomical cavity comprising
a portal sleeve having a distal end for positioning in the anatomical cavity, a proximal end and a lumen extending between said distal and proximal portal sleeve ends; -
a penetrating member disposed in said lumen of said portal sleeve and having a distal end for penetrating anatomical tissue and a proximal end; extending means for biasing said portal sleeve distally to a portal sleeve extended position where said portal sleeve distal end is disposed distally of said sharp penetrating member distal end and for permitting said portal sleeve to move proximally to a portal sleeve retracted position where said portal sleeve distal end is disposed proximally of said sharp penetrating member distal end; portal sleeve bias means for biasing said portal sleeve distally in said portal sleeve retracted position and for permitting said portal sleeve to move proximally from said portal sleeve retracted position during penetration of the anatomical tissue and distally toward said portal sleeve retracted position upon introduction of said safety penetrating instrument in the anatomical cavity; retracting means for biasing said penetrating member proximally to a penetrating member retracted position where said sharp penetrating member distal end is disposed proximally of said portal sleeve distal end with said portal sleeve in said portal sleeve retracted position and for permitting said penetrating member to move distally to a penetrating member extended position where said sharp penetrating member distal end is disposed distally of said portal sleeve distal end with said portal sleeve in said portal sleeve retracted position; penetrating member bias means for biasing said penetrating member distally in said penetrating member extended position and for permitting said penetrating member to move proximally from said penetrating member extended position during penetration of the anatomical tissue and distally toward said penetrating member extended position upon introduction of said safety penetrating instrument in the anatomical cavity; portal sleeve locking means for locking said portal sleeve in said portal sleeve retracted position to prevent movement of said portal sleeve to said portal sleeve extended position during penetration of the anatomical tissue; penetrating member locking means for locking said penetrating member in said penetrating member extended position to prevent movement of said penetrating member to said penetrating member retracted position during penetration of the anatomical tissue; portal sleeve releasing means responsive to movement of said portal sleeve distally toward said portal sleeve retracted position for triggering release of said portal sleeve locking means to permit said extending means to move said portal sleeve to said portal sleeve extended position; and penetrating member releasing means responsive to movement of said penetrating member distally toward said penetrating member extended position for triggering release of said penetrating member locking means to permit said retracting means to move said penetrating member to said penetrating member retracted position. - View Dependent Claims (30, 31, 32)
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33. A method of forming a portal in the wall of an anatomical cavity comprising the steps of
moving a penetrating member of a safety penetrating instrument distally relative to a hub of the safety penetrating instrument from a penetrating member retracted position to a penetrating member extended position; -
moving a safety member of the safety penetrating instrument proximally relative to the hub from a safety member extended position to a safety member retracted position; mechanically locking the penetrating member in the penetrating member extended position and the safety member in the safety member retracted position; penetrating the anatomical cavity wall with the penetrating member locked in the penetrating member extended position and the safety member locked in the safety member retracted position; mechanically unlocking the penetrating member and the safety member when the safety penetrating instrument enters the anatomical cavity; moving the penetrating member proximally relative to the hub from the penetrating member extended position to the penetrating member retracted position; and moving the safety member distally relative to the hub from the safety member retracted position to the safety member extended position. - View Dependent Claims (34, 35, 36, 37)
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Specification