Prosthesis having a sleeve valve
First Claim
1. A prosthesis for placement in a patient comprising:
- a tubular stent having a passage extending longitudinally therethrough; and
a sleeve extending from an end of the tubular stent and having a lumen extending longitudinally therethrough and communicating with the passage of the tubular drainage stent, the sleeve permitting the passage of a fluid through the lumen in a first 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 direction, wherein the sleeve includes a portion having increased resistance to being inverted through the tubular stent in response to the second pressure.
2 Assignments
0 Petitions
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 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 back through the tubular stent frame to permit belching or vomiting (fluid or materials under a third, significantly higher pressure). Another aspect of the invention includes a tubular drainage stent, such as a biliary or urethral stent in which the sleeve opens to permit passage of fluids, then collapses to prevent retrograde flow.
77 Citations
43 Claims
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1. A prosthesis for placement in a patient comprising:
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a tubular stent having a passage extending longitudinally therethrough; and
a sleeve extending from an end of the tubular stent and having a lumen extending longitudinally therethrough and communicating with the passage of the tubular drainage stent, the sleeve permitting the passage of a fluid through the lumen in a first 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 direction, wherein the sleeve includes a portion having increased resistance to being inverted through the tubular stent in response to the second pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A prosthesis for placement in a patient comprising:
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a tubular stent having a passage extending longitudinally therethrough; and
a sleeve extending from an end of the tubular stent and having a lumen extending longitudinally therethrough and communicating with the passage of the tubular drainage stent, the sleeve permitting the passage of a fluid through the lumen in a first 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 direction, wherein the sleeve includes an inversion inhibition means for preventing the sleeve from being inverted through the tubular stent in response to the second pressure. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33)
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34. An anti-reflux esophageal prosthesis for placement in a patient comprising:
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a tubular stent having a passage extending longitudinally therethrough; and
a sleeve extending from an end of the tubular stent and having a lumen extending longitudinally therethrough and communicating with the passage of the tubular drainage stent, the sleeve permitting the passage of a fluid through the lumen in a first 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 direction, wherein the sleeve includes a portion having increased resistance to being inverted through the tubular stent in response to the second pressure; and
wherein the sleeve extends through the passage of said tubular frame in response to a third pressure that is applied to the sleeve in the second direction, said third pressure being significantly greater than the second pressure. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification