Medical fluid infusion and aspiration
First Claim
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1. A catheter, comprising:
- (a) a first valve comprising a first protuberance and a first slit extending through said first protuberance and through said catheter, said first protuberance projecting from said catheter; and
(b) a second valve comprising a second protuberance and a second slit extending through said second protuberance and through said catheter, said second protuberance projecting from said catheter,said first protuberance'"'"'s projection being greater than said second protuberance'"'"'s projection.
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Abstract
In an embodiment, a slit valve catheter has a generally tubular catheter body with an exterior surface exposed to an environment and an interior surface defining a lumen. The catheter further includes a valve which has a protuberance projecting radially from the catheter body.
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Citations
14 Claims
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1. A catheter, comprising:
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(a) a first valve comprising a first protuberance and a first slit extending through said first protuberance and through said catheter, said first protuberance projecting from said catheter; and (b) a second valve comprising a second protuberance and a second slit extending through said second protuberance and through said catheter, said second protuberance projecting from said catheter, said first protuberance'"'"'s projection being greater than said second protuberance'"'"'s projection. - View Dependent Claims (2)
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- 3. A catheter including an exterior surface and at least one interior surface defining at least one lumen, said catheter comprising a valve comprising a first protuberance, a second protuberance, and a slit extending through said first and second protuberances and through said catheter, said first protuberance projecting from said exterior surface and said second protuberance projecting from the at least one interior surface into the at least one lumen.
- 7. A catheter including at least one interior surface defining at least one lumen, said catheter comprising a valve comprising a protuberance projecting from said catheter and a slit through said protuberance and said catheter, said valve opening inward into the at least one lumen in response to an aspiration threshold pressure differential, said valve opening outward in response to an infusion threshold pressure differential, said protuberance impacting the operation of said valve.
Specification