Prosthesis having a sleeve valve
First Claim
1. A prosthesis for placement in a patient comprising:
- a tubular frame having a proximal portion, a distal portion, and a passage extending longitudinally therethrough; and
a sleeve extending from the proximal portion of the tubular frame and having a lumen extending longitudinally therethrough, the sleeve permitting the passage of a fluid through the lumen in a first, distal direction in response to the fluid applying a first pressure to the sleeve in the first direction, the sleeve being collapsible so as to substantially close the lumen in response to a fluid applying a second pressure to the sleeve in a second, proximal direction.
1 Assignment
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Accused Products
Abstract
Disclosed is a pressure sensitive prosthesis that includes a tubular member having a passageway extending therethrough and a sleeve attached about one end of the tubular member. The sleeve functions as a one-way valve to permit fluid flowing through the sleeve lumen in a first, distal direction and under a first pressure, while collapsing in response to fluid flowing in a second direction when the pressure thereof exceeds that of the first direction or pressure. One aspect of the invention includes an esophageal anti-reflux expandable prosthesis wherein the sleeve is adapted to invert out of the tubular stent frame to permit belching or vomiting (fluid or materials under a third, higher pressure).
125 Citations
20 Claims
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1. A prosthesis for placement in a patient comprising:
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a tubular frame having a proximal portion, a distal portion, and a passage extending longitudinally therethrough; and
a sleeve extending from the proximal portion of the tubular frame and having a lumen extending longitudinally therethrough, the sleeve permitting the passage of a fluid through the lumen in a first, distal direction in response to the fluid applying a first pressure to the sleeve in the first direction, the sleeve being collapsible so as to substantially close the lumen in response to a fluid applying a second pressure to the sleeve in a second, proximal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A prosthesis for placement in a patient comprising:
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a tubular frame having a proximal portion, a distal portion, and a passage extending longitudinally therethrough; and
a sleeve extending from the proximal portion of the tubular frame and having a lumen extending longitudinally therethrough for the passage of a fluid through the lumen in a first, distal direction in response to the fluid applying a first pressure to the sleeve in the first direction, the sleeve being collapsible so as to substantially close the lumen in response to a fluid applying a second pressure to the sleeve in a second, proximal direction;
wherein the sleeve extends distally through the frame in response to the first pressure and wherein the sleeve extends proximally from the proximal portion of the frame in response to a third pressure that is greater than the first pressure. - View Dependent Claims (18, 19)
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20. A prosthesis for placement in a patient comprising:
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a frame having a proximal portion, a distal portion, and a passage extending longitudinally therethrough; and
a collapsible sleeve extending from the proximal portion of the frame and having a lumen extending longitudinally therethrough;
the sleeve having a first configuration wherein the sleeve extends distally at least partially into the frame towards the distal portion and a second configuration wherein the sleeve extends proximally from the proximal portion of the frame.
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Specification