Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-07-18
1989-09-12
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 99, 604208, G61M 2500
Patent
active
048655872
ABSTRACT:
To inflate the balloon element on the distal end of a pulmonary artery catheter an improved gas syringe is provided which is both volume and pressure-limited so that the syringe is capable of discharging into the catheter no more than the maximum design gas inlet volume thereof while at the same reducing the maximum attainable pressure within the catheter to a predeterminable level substantially below that reached when a conventional volume-limited syringe of the same gas discharge capacity is used. The syringe volume delivery limitation is achieved by forming rearwardly disposed plunger stop members, or a suitable vent opening, in a sidewall portion of the syringe body. The pressure limitation is obtained by forming a pressure absorption zone which defines a substantially inextensible enlargement of the gas-receiving interior of the catheter. In an alternate embodiment of the syringe, an orifice plate having a small orifice opening therein is secured across the syringe outlet to limit the balloon inflation rate during an initial portion of the operation of the syringe.
REFERENCES:
patent: 3642005 (1972-02-01), McGinnis
patent: 3871374 (1975-03-01), Bolduc et al.
patent: 3905361 (1975-09-01), Hewson et al.
patent: 4064882 (1977-12-01), Johnson et al.
patent: 4116201 (1978-09-01), Shah
patent: 4205683 (1980-06-01), O'Neill
patent: 4335723 (1982-06-01), Patel
patent: 4370982 (1983-01-01), Reilly
patent: 4439185 (1984-04-01), Lundquist
patent: 4583974 (1986-04-01), Kokernak
Inflating Characteristics of Swan-Ganz Catheter Balloons: Clinical Considerations-Jean Francois Hardy, MD & Taillefer, M.D.
A Study of the Lateral Wall Pressure Exerted by Balloon-Tipped Catheters, Burdick, M.D., and Willians, M.D.
Pathophysiology of Rupture of the Pulmonary Artery by Pulmonary Artery Balloon-Tipped Catheters, Hardy, MD, Morissette MD, Taillefer MD and Vauclair, MD.
Pressure-Volume Relationships of the Pulmonary Artery Catheter Balloon-McDonald & Zaidan-Oct. 1982-18 pages.
Pressure-Volume Relationships of the Pulmonary Artery Catheter Balloon-McDonald & Zaidan-Feb. 25, 1983-4 pages.
American Edwards Soft-Wedge Syringe-Descriptive and Evaluation Materials-1982-4 pages.
LandOfFree
Syringe and catheter apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Syringe and catheter apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Syringe and catheter apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-913110