Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1998-01-15
1999-11-30
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 49, A61M 2900
Patent
active
059934166
ABSTRACT:
The invention relates to an apparatus and method for limiting the pressure of inflation fluid injected into a drug delivery catheter balloon, while permitting continuous and uninterrupted flow of such fluid to the balloon. The apparatus includes an elongated hollow housing having a fluid entrance, a fluid exit and a bore extending therebetween which forms an interconnecting chamber and passageway. A piston and piston shaft assembly is disposed inside the housing and is longitudinally movable within the chamber. The piston and piston shaft assembly is biased against the fluid pressure of the fluid entering the housing by a spring. The piston shaft has a distal end which extends toward the passageway inlet. As the incoming fluid pressure increases and approaches the predetermined maximum pressure level of the apparatus, the piston shaft distal end moves within the chamber against the biasing force of the spring toward a position adjacent the passageway inlet. When the incoming fluid pressure reaches and exceeds the predetermined maximum pressure level, the piston shaft distal end enters and extends into the passageway, thereby forming an annulus within the passageway. The annulus functions to restrict the flow rate and limit the pressure of the fluid exiting the housing and entering the catheter balloon.
REFERENCES:
patent: 2245271 (1941-06-01), Guill
patent: 4062360 (1977-12-01), Bentley
patent: 4143853 (1979-03-01), Abramson
patent: 4449693 (1984-05-01), Gereg
patent: 4703759 (1987-11-01), Merrick et al.
patent: 4931050 (1990-06-01), Idriss
patent: 5061253 (1991-10-01), Yoshida
patent: 5084021 (1992-01-01), Baldwin
patent: 5098405 (1992-03-01), Peterson et al.
patent: 5221268 (1993-06-01), Barton et al.
patent: 5238026 (1993-08-01), Goto
patent: 5273542 (1993-12-01), Blake, III
patent: 5300034 (1994-04-01), Behnke et al.
patent: 5318515 (1994-06-01), Wilk
patent: 5336174 (1994-08-01), Daoud et al.
patent: 5336192 (1994-08-01), Palestrant
patent: 5409477 (1995-04-01), Caron et al.
patent: 5453096 (1995-09-01), Lataix
patent: 5453097 (1995-09-01), Paradis
patent: 5499968 (1996-03-01), Milijasevic et al.
patent: 5505701 (1996-04-01), Lomana
patent: 5514110 (1996-05-01), Teh
patent: 5520661 (1996-05-01), Lal et al.
patent: 5520665 (1996-05-01), Fleetwood
patent: 5531688 (1996-07-01), Hiejima et al.
patent: 5752935 (1998-05-01), Robinson et al.
patent: 5785685 (1998-07-01), Kugler et al.
Choh Richard T.
Fagan John R.
Forcucci Stephen J.
Klein Richard L.
Maresh Catherine C.
Medtronic Ave Inc.
Yasko John D.
LandOfFree
Method and apparatus for regulating the fluid flow rate to and p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for regulating the fluid flow rate to and p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for regulating the fluid flow rate to and p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1665818