Automatic retractable safety penetrating instrument for portal sleeve introduction and method of use
First Claim
1. An automatic retractable safety penetrating instrument for forming a portal communicating with an anatomical cavity for introduction of instruments therethrough comprisinga portal sleeve having a distal end, a proximal end and a lumen extending between said sleeve distal and proximal ends;
- a penetrating member having a sharp distal end for penetrating tissue and being slidably disposed in said sleeve lumen;
retracting means for moving said penetrating member from an extended position wherein said penetrating member distal end protrudes beyond said sleeve distal end to a retracted position wherein said penetrating member distal end is disposed within said sleeve lumen;
said penetrating member having an operative position between said retracted and extended positions wherein said penetrating member distal end is aligned with said portal sleeve distal end;
operating means movable distally with said penetrating member between said operative position and said extended position when said sleeve distal end enters an anatomical cavity; and
trigger means for automatically actuating said retracting means in response to distal movement of said operating means to move said penetrating member to said retracted position whereby said penetrating member distal end is automatically retracted within said sleeve lumen when said sleeve distal end enters an anatomical cavity.
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Accused Products
Abstract
An automatic retractable safety penetrating instrument for introducing a portal sleeve into an anatomical cavity via a penetrating member disposed in the portal sleeve includes an operating member biased to move distally upon entry of the instrument into the anatomical cavity to automatically retract the penetrating member into the portal sleeve. The operating member can be carried by the penetrating member to be movable therewith or by a probe movable independent of the penetrating member. The instrument incorporates various locking and releasing mechanisms and spring arrangements chosen dependent upon ease of manufacture and assembly and procedures to be performed with the instrument. The instrument has the appearance of a standard trocar-like penetrating instrument and can be used in a manner familiar to surgeons while producing safety retraction upon entry into an anatomical cavity.
88 Citations
56 Claims
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1. An automatic retractable safety penetrating instrument for forming a portal communicating with an anatomical cavity for introduction of instruments therethrough comprising
a portal sleeve having a distal end, a proximal end and a lumen extending between said sleeve distal and proximal ends; -
a penetrating member having a sharp distal end for penetrating tissue and being slidably disposed in said sleeve lumen; retracting means for moving said penetrating member from an extended position wherein said penetrating member distal end protrudes beyond said sleeve distal end to a retracted position wherein said penetrating member distal end is disposed within said sleeve lumen; said penetrating member having an operative position between said retracted and extended positions wherein said penetrating member distal end is aligned with said portal sleeve distal end; operating means movable distally with said penetrating member between said operative position and said extended position when said sleeve distal end enters an anatomical cavity; and trigger means for automatically actuating said retracting means in response to distal movement of said operating means to move said penetrating member to said retracted position whereby said penetrating member distal end is automatically retracted within said sleeve lumen when said sleeve distal end enters an anatomical cavity. - View Dependent Claims (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, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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2. An automatic retractable safety penetrating instrument for forming a portal communicating with an anatomical cavity for introduction of instruments therethrough comprising
a portal sleeve having a distal end, a proximal end and a lumen extending along a longitudinal axis between said sleeve distal and proximal ends; -
a penetrating member having a proximal end, a sharp distal end for penetrating tissue and being slidably disposed in said sleeve lumen; retracting means for moving said penetrating member from an extended position wherein said penetrating member distal end protrudes beyond said sleeve distal end to a retracted position wherein said penetrating member distal end is disposed within said sleeve lumen; operating means movable distally when said sleeve distal end enters an anatomical cavity; trigger means for automatically actuating said retracting means in response to distal movement of said operating means to move said penetrating member to said retracted position whereby said penetrating member distal end is automatically retracted within said sleeve lumen when said sleeve distal end enters an anatomical cavity; and a hub receiving said penetrating member proximal end and having slot means therein and pin means carried by said penetrating member proximal end and extending through said slot means transversely to said longitudinal axis to an end disposed externally of said hub to permit said pin means to be longitudinally manually moved to move said penetrating member. - View Dependent Claims (31, 32, 33, 34)
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3. An automatic retractable safety penetrating instrument for forming a portal communicating with an anatomical cavity for introduction of instruments therethrough comprising
a portal sleeve having a distal end, a proximal end and a lumen extending between said sleeve distal and proximal ends; -
a penetrating member having a sharp distal end for penetrating tissue and being slidably disposed in said sleeve lumen; retracting means for moving said penetrating member from an extended position wherein said penetrating member distal end protrudes beyond said sleeve distal end to a retracted position wherein said penetrating member distal end is disposed within said sleeve lumen; operating means movable distally when said sleeve distal end entering an anatomical cavity; trigger means for automatically actuating said retracting means in response to distal movement of said operating means to move said penetrating member to said retracted position whereby said penetrating member distal end is automatically retracted within said sleeve lumen when said sleeve distal end enters an anatomical cavity; and a housing receiving said portal sleeve proximal end and a valve assembly disposed in said housing including an annular valve seat and a valve member biased to a closed position engaging said valve seat and movable to an open position against said bias, said valve assembly accommodating passage of said penetrating member therethrough and said valve seat and said valve member being integrally, unitarily formed of a resilient material. - View Dependent Claims (35, 36)
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4. An automatic retractable safety penetrating instrument for forming a portal communicating with an anatomical cavity for introduction of instruments therethrough comprising
a portal sleeve having a distal end, a proximal end and a lumen extending between said sleeve distal and proximal ends; -
a penetrating member having a sharp distal end for penetrating tissue and being slidably disposed in said sleeve lumen; retracting means for moving said penetrating member from an extended position wherein said penetrating member distal end protrudes beyond said sleeve distal end to a retracted position wherein said penetrating member distal end is disposed within said sleeve lumen; operating means movable distally along a longitudinal path when said sleeve distal end entering an anatomical cavity; and trigger means for automatically actuating said retracting means in response to distal movement of said operating means to move said penetrating member to said retracted position whereby said penetrating member distal end is automatically retracted within said sleeve lumen when said sleeve distal end enters an anatomical cavity, said trigger means includes a locking member for engaging said retracting means to prevent movement of said penetrating member to said retracted position and a trigger member positioned in said longitudinal path to be contacted by said operating means during distal movement thereof to move said locking member out of engagement with said retracting means. - View Dependent Claims (37, 38)
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Specification