Artificial valve
First Claim
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1. A medical device, comprising:
- a first frameless membrane having a first membrane sealing surface; and
a second frameless membrane having a second membrane sealing surface, the first frameless membrane and the second frameless membrane implantable in a body lumen and deformable between a first position under antegrade fluid flow and a second position under retrograde fluid flow, where in the second position the first membrane sealing surface and the second membrane sealing surface meet to resist fluid flow.
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Abstract
Method and apparatus implementing and using techniques for controlling flow in a body lumen, including use of an implantable medical device. The device includes a membrane implantable in a body lumen and invertibly deformable between a first position and a second position. The membrane is invertible in response to the direction of fluid flow through the lumen and can be deformable by fluid flow in the body lumen.
152 Citations
20 Claims
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1. A medical device, comprising:
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a first frameless membrane having a first membrane sealing surface; and
a second frameless membrane having a second membrane sealing surface, the first frameless membrane and the second frameless membrane implantable in a body lumen and deformable between a first position under antegrade fluid flow and a second position under retrograde fluid flow, where in the second position the first membrane sealing surface and the second membrane sealing surface meet to resist fluid flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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positioning two or more frameless membranes in a body lumen, each membrane invertibly deformable between a first position and a second position, wherein at least one frameless membrane is invertible in response to the direction of fluid flow through the lumen relative to the membrane in the first position. - View Dependent Claims (13, 14, 15)
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16. A medical system, comprising:
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a first frameless membrane;
an elongate catheter including a central portion including a first groove surrounded by a retractable sheath, the first frameless membrane positioned in the first groove between the retractable sheath and the central portion; and
a first push rod extending through the elongate catheter to the first groove to contact and extend the first frameless membrane from the elongate catheter. - View Dependent Claims (17, 18, 19, 20)
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Specification