Valved catheters including high flow rate catheters

Details Valved catheters including high flow rate catheters Valved catheters including high flow rate catheters

2007-08-07

2007-08-07

Sirmons, Kevin C. (Department: 3767)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S246000, C604S533000, C604S537000, C137S493000

Reexamination Certificate

active

10651535

ABSTRACT:
A pressure activated two-way slit valve assembly is designed to be used in combination with, but not limited to, a high flow rate catheter to prevent accidental ingestion of air or loss of blood if the closure cap comes off during non-use of the catheter. In addition, the potential for occlusion of the catheter due to blood clots in the catheter and catheter related infection is substantially reduced. The pressure activated two-way slit valve assembly includes a first end, a second end, a wall defining a dumbbell shaped channel, and a flexible, thin disk having a slit and positioned within the pressure activated two-way slit valve assembly to reside within the dumbbell shaped channel. The slit and the dumbbell shaped channel are sized to enable the slit to deform in response to a predetermined pressure differential across the slit to allow fluid to pass therethrough.

REFERENCES:
patent: 5396925 (1995-03-01), Poli
patent: 2002/0010425 (2002-01-01), Guo et al.
patent: 2004/0186444 (2004-09-01), Daly et al.
patent: 2004/0193119 (2004-09-01), Canaud et al.
patent: WO 96 17190 (1996-06-01), None
patent: WO 98 22178 (1998-05-01), None

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