Pressure actuated flow control valve

Details Pressure actuated flow control valve Pressure actuated flow control valve

2002-11-26

2009-10-13

Sirmons, Kevin C. (Department: 3767)

Surgery

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

Treating material introduced into or removed from body...

C604S247000, C604S257000, C604S019000

Reexamination Certificate

active

07601141

ABSTRACT:
A pressure actuated flow control valve for an infusion catheter permits gravity flow of a liquid through the catheter and into a patient while resisting back flow of blood from the patient and into the catheter. The valve has a hemispherical body with an outstanding circumferential flange and a normally closed, diametric slit. The slit is longer on the convex outer surface than on the concave inner surface. Dome thickness diminishes in the area adjacent the slit, reducing total apical deflection upon collapse of the slit toward the concave surface. An inner orthogonal rib biases the slit closed. Upon application of a predetermined pressure, the slit opens toward the concave surface to permit forward fluid flow. At lower pressures, the slit closes to check fluid flow. Greater reverse pressure is required to collapse the slit toward the concave surface to permit reverse fluid flow.

REFERENCES:
patent: 274447 (1883-03-01), Kennish
patent: 1923501 (1933-08-01), Perry
patent: 2524764 (1950-10-01), Burke
patent: 3517682 (1970-06-01), Smith
patent: 4143853 (1979-03-01), Abramson
patent: 4181145 (1980-01-01), Mitchell
patent: 4341239 (1982-07-01), Atkinson
patent: 4434810 (1984-03-01), Atkinson
patent: 4995863 (1991-02-01), Nichols et al.
patent: 5147313 (1992-09-01), Dikeman
patent: 5147332 (1992-09-01), Moorehead
patent: 5160325 (1992-11-01), Nichols et al.
patent: 5169393 (1992-12-01), Moorehead et al.
patent: 5201722 (1993-04-01), Moorehead et al.
patent: 5205834 (1993-04-01), Moorehead et al.
patent: 5249598 (1993-10-01), Schmidt
patent: 5251873 (1993-10-01), Atkinson et al.
patent: 5295657 (1994-03-01), Atkinson
patent: 5295658 (1994-03-01), Atkinson et al.
patent: 5389091 (1995-02-01), Moorehead
patent: 5402982 (1995-04-01), Atkinson et al.
patent: 5409471 (1995-04-01), Atkinson et al.
patent: 5431202 (1995-07-01), Dikeman et al.
patent: 5501426 (1996-03-01), Atkinson et al.
patent: 5533708 (1996-07-01), Atkinson et al.
patent: 5843044 (1998-12-01), Moorehead
patent: 6024729 (2000-02-01), Dehdashtian et al.
patent: 6270489 (2001-08-01), Wise et al.
patent: 6364867 (2002-04-01), Wise et al.
patent: 2002/0165492 (2002-11-01), Davey et al.
patent: 0416467 (1991-03-01), None
patent: 2707505 (1995-01-01), None
Printout from website for Vernay Laboratories, Inc. (www.vernay.com) depicting prior art bi-directional valve designated Part No. VL2959-101 (printed Feb. 2, 2007).
European Communication dated Sep. 10, 2007 from European Application No. 03029630.5, filed Dec. 22, 2003.
European Communication dated Jan. 29, 2007 from European Application No. 03029630.5, filed Dec. 22, 2003.
European Communication dated May 26, 2004 from European Application No. 03029630.5, filed Dec. 22, 2003.
European Communication dated Oct. 12, 2007 from European Application No. 07016563.4, filed Aug. 23, 2007.
English Translation of French Patent No. FR2707505, published Jan. 20, 1995, translation dated Nov. 2, 2007.
European Communication dated Oct. 16, 2007 from European Application No. 07016562.6, filed Sep. 28, 2007.

Affiliated with

Also associated with

Rating

Pressure actuated flow control valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressure actuated flow control valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure actuated flow control valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4077787