Isolation system for pressure gauges for permitting repeated use

Details Isolation system for pressure gauges for permitting repeated use Isolation system for pressure gauges for permitting repeated use

1999-02-01

2000-10-31

Coggins, Wynn Wood

Surgery

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

Treating material introduced into or removed from body...

604 9801, 604100, A61M 2900

Patent

active

061395234

ABSTRACT:
Systems and methods for isolating a pressure gauge from sources of potential contamination so that the pressure gauge may be reused in multiple medical procedures without having to be subjected to a sterilization procedure. The systems of the invention may include a syringe assembly having a pressure gauge removably attached to a syringe. The pressure gauge is isolated from sources of potential contamination in at least two ways. First, a flexible membrane separates a pressure transducer diaphragm of the pressure gauge from the pressurized fluid of the syringe. The flexible membrane prevents the pressure gauge from contacting the fluid and transmits pressure and forces from the fluid to the pressure gauge. Second, a substantially transparent disposable bag or film covers surfaces of the pressure gauge that would be otherwise exposed to human contact or other contaminants. During medical procedures, the pressure gauge maintains its sterile condition. After use, the pressure gauge may be removed from the syringe and subsequently used with a second syringe without an intervening sterilization procedure. The syringe assemblies may further include a balloon-tipped catheter for use in angioplasty and related medical procedures.

REFERENCES:
patent: 3890842 (1975-06-01), Ramsey, III
patent: 4655749 (1987-04-01), Fischione
patent: 5057078 (1991-10-01), Foote et al.
patent: 5163904 (1992-11-01), Lampropoulos et al.
patent: 5449345 (1995-09-01), Taylor et al.
patent: 5472424 (1995-12-01), Lampropoulos et al.
patent: 5752935 (1998-05-01), Robinson et al.

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