Automatic retractable safety penetrating instrument
First Claim
1. A method of performing surgical procedures comprising the steps ofpenetrating tissue with a sharp tip of a penetrating member disposed within a cannula to position a distal end of the cannula in the tissue;
- automatically retracting the sharp penetrating member tip within the cannula in response to desired positioning of the cannula in the tissue;
moving the penetrating member distally within the cannula with the cannula distal end positioned in the tissue to cause the sharp penetrating member tip to protrude beyond the cannula distal end; and
performing a procedural step using the penetrating member.
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Accused Products
Abstract
A retractable safety penetrating instrument includes a cannula, a penetrating member disposed within the cannula and a hub mounting proximal ends of the penetrating member and the cannula. The penetrating member is movable to an operative state to penetrate tissue wherein a sharp tip of the penetrating member extends beyond a distal end of the cannula, and is arranged to be moved to a retracted position with the sharp tip of the penetrating member disposed within the cannula in a safe, protected position upon penetrating through the tissue. The penetrating member is selectively movable to various extended positions following retraction such that the sharp tip of the penetrating member can be positioned in an anatomical cavity to perform various medical procedures. The cannula can include various distensible, expandable or shape changing devices automatically positioned in response to retraction of the penetrating member to stabilize or hold the instrument within an anatomical cavity. A method of performing surgical procedures includes the steps of automatically retracting a sharp tip of the penetrating member within a cannula, moving the penetrating member distally to cause the sharp tip to protrude beyond a distal end of the cannula and performing a procedural step with the penetrating member.
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Citations
22 Claims
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1. A method of performing surgical procedures comprising the steps of
penetrating tissue with a sharp tip of a penetrating member disposed within a cannula to position a distal end of the cannula in the tissue; -
automatically retracting the sharp penetrating member tip within the cannula in response to desired positioning of the cannula in the tissue; moving the penetrating member distally within the cannula with the cannula distal end positioned in the tissue to cause the sharp penetrating member tip to protrude beyond the cannula distal end; and performing a procedural step using the penetrating member. - View Dependent Claims (2, 3, 4, 5)
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6. A method of performing surgical procedures comprising the steps of
penetrating an anatomical cavity with a sharp tip of a penetrating member disposed within a cannula to position the cannula in the anatomical cavity; -
retracting the sharp tip of the penetrating member within the cannula automatically upon positioning of the cannula in the anatomical cavity; automatically stabilizing the cannula within the anatomical cavity in response to automatic retraction of the penetrating member; and performing a procedural step through the cannula. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of performing surgical procedures comprising the steps of
penetrating tissue with a sharp tip of a penetrating member disposed within a cannula to position a distal end of the cannula in the tissue; -
automatically retracting the sharp penetrating member tip within the cannula in response to desired positioning of the cannula in the tissue; moving the penetrating member distally to cause the sharp penetrating member tip to protrude beyond the cannula distal end; and performing a procedural step using the penetrating member, said performing step including cauterizing tissue using the penetrating member. - View Dependent Claims (13, 14, 15)
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16. A method of performing surgical procedures comprising the steps of
penetrating tissue with a sharp tip of a hollow penetrating member disposed within a cannula to position a distal end of the cannula in the tissue; -
automatically retracting the sharp penetrating member tip within the cannula in response to desired positioning of the cannula in the tissue; moving the penetrating member distally to cause the sharp penetrating member tip to protrude beyond the cannula distal end; and performing a procedural step using the penetrating member, said performing step including inserting instruments through the penetrating member. - View Dependent Claims (17)
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18. A method of performing surgical procedures comprising the steps of
penetrating tissue with a sharp tip of a penetrating member disposed within a cannula to position a distal end of the cannula in the tissue, said penetrating member having a proximal end mounted in a hub and a tube extending through the hub and into the proximal end of the penetrating member; -
automatically retracting the sharp penetrating member tip within the cannula in response to desired positioning of the cannula in the tissue; moving the penetrating member distally to cause the sharp penetrating member tip to protrude beyond the cannula distal end, said moving step including moving the penetrating member with an end of the tube disposed externally of the hub; and performing a procedural step using the penetrating member. - View Dependent Claims (19, 20, 21)
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22. A method of performing surgical procedures comprising the steps of
penetrating an anatomical cavity with a sharp tip of a penetrating member disposed within a cannula to position the cannula in the anatomical cavity; -
retracting the sharp tip of the penetrating member within the cannula upon positioning of the cannula in the anatomical cavity; automatically stabilizing the cannula within the anatomical cavity in response to retraction of the penetrating member; completely withdrawing the penetrating member from the cannula; performing a procedural step through the cannula, said step of performing including inserting an instrument for performing a lumpectomy through the cannula.
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Specification