Trocar valve assembly
First Claim
1. A valve having an axis extending between a proximal end and an opposing distal end, comprising:
- an outer wall forming a continuous surface around the axis, the continuous surface extending progressively radially inwardly between the proximal end to the distal enda flange extending radially outwardly at a proximal end of the outer wall;
a plurality of fold sections extending inwardly of the outer wall and forming a continuous inner wall of the valve, each of the fold sections having an open state and a closed state;
a first one of the fold sections having a generally concave distal facing surface and a generally convex proximal facing surface;
a second one of the fold sections disposed in juxtaposition to the first fold section and defining with the first fold section a slit which is sealed when the fold sections are in the closed state and is unsealed when the fold sections are in the open state.
3 Assignments
0 Petitions
Accused Products
Abstract
A surgical device having a longitudinal configuration and an axis extending between a proximal end and an opposing distal end includes a housing having an inner surface defining a chamber and a cannula extending distally of the housing. A valve disposed in the housing has a conical outer wall and a plurality of distal walls which form a first seal with the inner surface of the housing and a second seal. The walls include multiple fold segments which are foldable between a first position wherein the second seal closes the cannula and a second position wherein the second seal opens the cannula. A method for actuating the valve includes the step of inserting an instrument distally into the valve to contact the fold segments along a line and to move the fold segments to the second position.
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Citations
17 Claims
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1. A valve having an axis extending between a proximal end and an opposing distal end, comprising:
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an outer wall forming a continuous surface around the axis, the continuous surface extending progressively radially inwardly between the proximal end to the distal end a flange extending radially outwardly at a proximal end of the outer wall; a plurality of fold sections extending inwardly of the outer wall and forming a continuous inner wall of the valve, each of the fold sections having an open state and a closed state; a first one of the fold sections having a generally concave distal facing surface and a generally convex proximal facing surface; a second one of the fold sections disposed in juxtaposition to the first fold section and defining with the first fold section a slit which is sealed when the fold sections are in the closed state and is unsealed when the fold sections are in the open state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A valve adapted to receive an elongate instrument, and having an axis extending between a proximal end and a distal end, the valve comprising:
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an annular flange extending outwardly of the axis; an outer circumferential wall extending distally of the flange; a plurality of distal walls extending inwardly distally of the outer wall, the distal walls being adapted to form a seal when the instrument is absent from the valve and to engage the instrument when the instrument is received by the valve; the outer wall having a first circumference in proximity to the distal walls and a second circumference in proximity to the flange; and the second circumference being greater than the first circumference to facilitate inversion of the valve when the instrument is withdrawn from the valve wherein the outer wall extends progressively radially inward between the proximal end to the distal end. - View Dependent Claims (11, 12, 13)
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14. The method for actuating a valve having an axis extending between a proximal end and an opposing distal end, with an instrument having an elongate configuration, comprising the steps of:
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providing the valve with an outer wall defining a channel through the valve; providing the valve with a plurality of distal walls each having an outer surface and an inner surface, the distal walls extending distally inwardly of the outer wall to form a seal in the absence of the instrument; inserting the instrument into the channel; contacting the inner surface of the distal walls with the instrument; forcing the distal walls outwardly as the instrument moves distally through the valve; withdrawing the instrument from the valve; and inverting at least the distal walls of the valve outside in to wipe the instrument during the withdrawing step. - View Dependent Claims (15, 16, 17)
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Specification