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US 6,436,077 B1Granted
Medical fluid infusion and aspiration
AssigneeBoston Scientific Corporation
InventorsChristopher T. Davey, Matthew N. McCarthy
Life of this patent
Estimating the term…
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.
Claims14
A catheter, comprising:
- a first valve including a first protuberance and a first slit extending through the first protuberance and through the catheter, the first protuberance projecting from the catheter;
- and
- a second valve including a second protuberance and a second slit extending through the second protuberance and through the catheter, the second protuberance projecting from the catheter, the first and second protuberances projecting from the catheter by a substantially similar amount.
A catheter including an exterior surface and at least one interior surface defining at least one lumen, the catheter comprising:
- a first valve including a first protuberance, a second protuberance, and a first slit extending through the first and second protuberances and through the catheter, the first protuberance projecting from the exterior surface and the second protuberance projecting from the at least one interior surface into the at least one lumen;
- and
- a second valve including a third protuberance and a second slit extending through the third protuberance and through the catheter.
A catheter including at least one interior surface defining at least one lumen, the catheter comprising:
- a first valve including a first protuberance projecting from the catheter and a first slit extending through the first protuberance and the catheter, the first valve opening inwardly into the at least one lumen in response to a first aspiration threshold pressure differential, the first valve opening outwardly in response to a first infusion threshold pressure differential, the first protuberance impacting operation of the first valve;
- and
- a second valve including a second protuberance projecting from the catheter and a second slit extending through the second protuberance and the catheter, the second valve opening inwardly into the at least one lumen in response to a second aspiration threshold pressure differential, the second valve opening outwardly in response to a second infusion threshold pressure differential, the second protuberance impacting operation of the second valve.
Dependencies are inferred from the claim text.