Gel based laparoscopic trocar
First Claim
1. A gel based laparoscopic trocar comprising:
- a shaft having an upper portion and a lower portion, said shaft having an interior dimension;
a rigid gel casing surrounding said upper portion of said shaft;
at least two resilient gel filled membranes filling said interior dimension of said upper portion of said shaft;
a plurality of petals surrounding the external portion of said lower portion of said shaft, said petals having a first condition in which said petals are elongated along the length of said shaft and a second condition in which portions of said petals are permitted to curl upward and away from said shaft; and
, a release mechanism associated with said petals, said release mechanism adapted to permit said petals to move from said first condition to said second condition upon actuation.
1 Assignment
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Accused Products
Abstract
A gel based laparoscopic trocar having a shaft with upper and lower portions, the shaft having an interior dimension, a rigid gel casing surrounding the upper portion of the shaft, at least two resilient gel filled membranes filling the interior dimension of the upper portion of the shaft, a plurality of petals surrounding the external portion of the lower portion of the shaft, the petals having a first condition in which the petals are elongated along the length of the shaft and a second condition in which portions of the petals are permitted to curl upward and away from the shaft, and a release mechanism associated with the petals, the release mechanism adapted to permit the petals to move from the first condition to the second condition upon actuation. The petals may include a memory metal having a natural condition relating to the second condition of the petals.
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Citations
21 Claims
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1. A gel based laparoscopic trocar comprising:
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a shaft having an upper portion and a lower portion, said shaft having an interior dimension;
a rigid gel casing surrounding said upper portion of said shaft;
at least two resilient gel filled membranes filling said interior dimension of said upper portion of said shaft;
a plurality of petals surrounding the external portion of said lower portion of said shaft, said petals having a first condition in which said petals are elongated along the length of said shaft and a second condition in which portions of said petals are permitted to curl upward and away from said shaft; and
,a release mechanism associated with said petals, said release mechanism adapted to permit said petals to move from said first condition to said second condition upon actuation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical access port comprising:
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a shaft having a first portion and a second portion, said first portion filled with at least two gel filled membranes;
a casing surrounding said first portion of said shaft;
a plurality of petals surrounding said second portion of said shaft, said petals having a first position in which said petals are elongated along the length of said second portion of said shaft and a second position in which said petals are permitted to curl away from said second portion of said shaft toward said casing;
wherein said second portion of said shaft is adapted to be placed through an opening formed in an abdominal wall of a patient such that said petals may compress the abdominal wall against the casing to hold the surgical access port in place. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of inserting a gel based laparoscopic trocar having a shaft with an upper portion and a lower portion, a rigid gel casing surrounding the upper portion of the shaft, at least two resilient gel filled membranes filling the first portion of the shaft, a plurality of petals surrounding the outside of the lower portion of the shaft, the petals having a first condition in which said petals are elongated along the length of the shaft and a second condition in which portions of the petals are permitted to curl upward and away from the shaft, said method comprising the steps of:
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forming a surgical incision in a patient;
spreading the surgical incision;
inserting the lower portion of the gel based laparoscopic trocar into the incision. - View Dependent Claims (20, 21)
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Specification