Volumetric pump with bi-directional piston seal

Details Volumetric pump with bi-directional piston seal Volumetric pump with bi-directional piston seal

1997-01-23

1999-08-03

Thorpe, Timothy S.

Pumps

Motor driven

Electric or magnetic motor

417547, 92168, 277567, F04B 3504

Patent

active

059316470

ABSTRACT:
A volumetric pump for administering intravenous fluids to a patient comprises a housing having an elongate cavity therein with an open and a closed end. A resilient sheet of material having two branched portions which form a centrally-located aperture is disposed over the open end of the housing. A pump shaft is slidably disposed through the aperture such that one branched portion toward the cavity and the other branched portion extends away from the housing such that a sphincter seal is formed about the shaft. An inlet conduit leading from a fluid source such as an IV bag passes through the housing into the cavity near one end thereof, and an outlet conduit leading to a fluid sink such as a patient passes through the housing from the cavity near the other end thereof. The shaft is driven back and forth in reciprocating motion, inwardly and outwardly of the cavity, to alternately produce a positive pressure forcing fluid out of the outlet conduit to the fluid sink, and a negative pressure forcing fluid from the fluid source through the inlet conduit.

REFERENCES:
patent: 247360 (1881-09-01), Jay
patent: 695589 (1902-03-01), Storle
patent: 789430 (1905-05-01), Jewson
patent: 1032187 (1912-07-01), Clifford
patent: 1460628 (1923-07-01), Wertz
patent: 1536415 (1925-05-01), Beck et al.
patent: 1815907 (1931-07-01), Halstead et al.
patent: 2022443 (1935-11-01), Stollberg
patent: 2393442 (1946-01-01), Yellott et al.
patent: 2501707 (1950-03-01), Bent
patent: 2645449 (1953-07-01), Gulick
patent: 2653580 (1953-09-01), Moore, Jr.
patent: 2709118 (1955-02-01), Martin
patent: 2750746 (1956-06-01), Brannen
patent: 2766701 (1956-10-01), Giraudeau
patent: 2782801 (1957-02-01), Ludwig
patent: 2856961 (1954-07-01), Kruschik
patent: 3019739 (1962-02-01), Prosser
patent: 3095785 (1963-07-01), Cahill et al.
patent: 3177780 (1965-04-01), Anderson
patent: 3216332 (1965-11-01), de Chambeau et al.
patent: 3268201 (1966-08-01), Little
patent: 3275331 (1966-09-01), Mastrobattista et al.
patent: 3300703 (1967-01-01), Gold et al.
patent: 3414693 (1968-12-01), Watson et al.
patent: 3463193 (1969-08-01), Yost
patent: 3509890 (1970-05-01), Phillips
patent: 3510177 (1970-05-01), Shimula
patent: 3515169 (1970-06-01), Berg et al.
patent: 3552441 (1971-01-01), Luhleich
patent: 3648568 (1972-03-01), Wright
patent: 3742822 (1973-07-01), Talbert
patent: 3802805 (1974-04-01), Roeser
patent: 3847453 (1974-11-01), Herbert
patent: 4042248 (1977-08-01), Williamitis
patent: 4055107 (1977-10-01), Bartley
patent: 4085941 (1978-04-01), Wilkinson et al.
patent: 4089349 (1978-05-01), Schenk
patent: 4095566 (1978-06-01), Fox et al.
patent: 4128227 (1978-12-01), Blomqvist
patent: 4159024 (1979-06-01), Getman
patent: 4197786 (1980-04-01), Pillon
patent: 4222575 (1980-09-01), Sekiguchi et al.
patent: 4241644 (1980-12-01), Schertler
patent: 4280741 (1981-07-01), Stoll
patent: 4384511 (1983-05-01), Mefferd
patent: 4392034 (1983-07-01), Payne
patent: 4433795 (1984-02-01), Maiefski
patent: 4437821 (1984-03-01), Ogawa
patent: 4448425 (1984-05-01), von Bergen
patent: 4449717 (1984-05-01), Kitawaki et al.
patent: 4468170 (1984-08-01), Hanset
patent: 4549718 (1985-10-01), Seger
patent: 4627795 (1986-12-01), Schmitz-Montz
patent: 4637295 (1987-01-01), Powers et al.
patent: 4674965 (1987-06-01), Hasegawa et al.
patent: 4721133 (1988-01-01), Sundblom
patent: 4723755 (1988-02-01), Ishigaki
patent: 4751867 (1988-06-01), Johnsson et al.
patent: 4759553 (1988-07-01), Goodman et al.
patent: 4804913 (1989-02-01), Shimizu et al.
patent: 4900883 (1990-02-01), Brame et al.
patent: 4974755 (1990-12-01), Sonntag
patent: 4975679 (1990-12-01), Ballyns
patent: 5104374 (1992-04-01), Bishko et al.
patent: 5140113 (1992-08-01), Machado
patent: 5144882 (1992-09-01), Weissgerber
patent: 5199718 (1993-04-01), Niemiec
patent: 5267721 (1993-12-01), Stroh
patent: 5380017 (1995-01-01), Leeuwenburg et al.
patent: 5429602 (1995-07-01), Hauser
patent: 5440968 (1995-08-01), Sekine
patent: 5467689 (1995-11-01), Carlin et al.

Affiliated with

Also associated with

Rating

Volumetric pump with bi-directional piston seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Volumetric pump with bi-directional piston seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Volumetric pump with bi-directional piston seal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-843354