Safety penetrating instrument with triggered penetrating member retraction and single or multiple safety member protrusion
First Claim
1. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity comprisinga housing;
- a cannula mounted by said housing and having a distal end for positioning within the anatomical cavity, a proximal end for positioning externally of the anatomical cavity wall and a lumen extending between said distal and proximal ends of said cannula;
a penetrating member disposed in said cannula and having a distal end for penetrating the anatomical cavity wall;
a safety member movable relative to said housing between a safety member retracted position exposing said distal end of said penetrating member and a safety member extended position placing said distal end of said penetrating member in a protected, non-exposed state;
retracting means for moving said penetrating member proximally relative to said housing from a penetrating member extended position to a penetrating member retracted position;
extending means for moving at least one of said cannula and said safety member distally relative to said housing from a retracted position to an extended position;
locking means for locking said penetrating member in said penetrating member extended position and at least one of said cannula and said safety member in said retracted position to prevent distal movement thereof relative to said housing beyond 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 retracting means to move said penetrating member proximally relative to said housing from said penetrating member extended position to said penetrating member retracted position and to permit said extending means to move at least one of said cannula and said safety member distally relative to said housing from said retracted position to said extended position to protect said distal end of said penetrating member.
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Accused Products
Abstract
A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity includes a cannula, a penetrating member disposed within the lumen of the cannula, a safety member movable relative to the penetrating member to place the tip of the penetrating member in a protected, non-exposed state, and various mechanisms for simultaneously retracting the penetrating member while extending one or both of the cannula and safety member from locked positions wherein the penetrating member is in an extended position and the cannula and safety member are in retracted positions. Retraction of the penetrating member and extension or protrusion of either or both of the safety member and portal sleeve is triggered individually or in combination by movement of one or more of the three members upon entering the anatomical cavity. Additionally, a probe can be carried by the safety penetrating instrument for triggering retraction and/or extension of the members in a similar manner or upon moving a predetermined proximal distance during penetration of the anatomical cavity wall.
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Citations
61 Claims
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1. A safety penetrating instrument for establishing a portal in a wall of an anatomical cavity comprising
a housing; -
a cannula mounted by said housing and having a distal end for positioning within the anatomical cavity, a proximal end for positioning externally of the anatomical cavity wall and a lumen extending between said distal and proximal ends of said cannula; a penetrating member disposed in said cannula and having a distal end for penetrating the anatomical cavity wall; a safety member movable relative to said housing between a safety member retracted position exposing said distal end of said penetrating member and a safety member extended position placing said distal end of said penetrating member in a protected, non-exposed state; retracting means for moving said penetrating member proximally relative to said housing from a penetrating member extended position to a penetrating member retracted position; extending means for moving at least one of said cannula and said safety member distally relative to said housing from a retracted position to an extended position; locking means for locking said penetrating member in said penetrating member extended position and at least one of said cannula and said safety member in said retracted position to prevent distal movement thereof relative to said housing beyond 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 retracting means to move said penetrating member proximally relative to said housing from said penetrating member extended position to said penetrating member retracted position and to permit said extending means to move at least one of said cannula and said safety member distally relative to said housing from said retracted position to said extended position to protect said distal end of said penetrating member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. 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 housing of the safety penetrating instrument from a penetrating member retracted position to a penetrating member extended position; -
moving at least one of a cannula and a safety member of the safety penetrating instrument proximally relative to the housing from an extended position to a retracted position to expose the distal end of the penetrating member; mechanically locking the penetrating member in the penetrating member extended position and at least one of the cannula and the safety member in the retracted position; penetrating the anatomical cavity wall with the penetrating member locked in the penetrating member extended position and at least one of the cannula and the safety member in the retracted position; mechanically unlocking the penetrating member and at least one of the cannula and the safety member when the safety penetrating instrument enters the anatomical cavity; moving the penetrating member proximally relative to the housing from the penetrating member extended position to the penetrating member retracted position; and moving at least one of the cannula and the safety member distally relative to the housing from the retracted position to the extended position. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61)
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Specification