Nonpulsating IV pump and disposable pump chamber

Archibald

[45] * Jul. 5,1983

3,384,080 5/1968 Muller 128/214

3,391,644 7/1968 Taplin 103/150

3,410,779 11/1968 Whitehead, Jr. et al 204/195

3,423,939 1/1969 Lewis et al 92/98 D

3,428,042 2/1969 Chesnut 128/1

3,451,393 6/1969 Sarnoff 128/214

3,464,359 9/1969 King et al 103/38

3,488,763 1/1970 Lofquist, Jr 103/150

3,559,644 2/1971 Stoft 128/214

3.640.276 2/1972 Dancy, Jr 128/

3.640.277 2/1972 Adelberg 128/

3,648,694 3/1972 Mogos et al 128/

3,670,926 6/1972 Hill 222/

3,690,318 9/1972 Gersuch 128/

3,704,080 11/1972 Cross 417/

3,730,495 5/1973 Elam 261/

3,730,650 5/1973 Kling 417/475

3.731.679 5/1973 Wilhelmson et al 128/

3.731.680 5/1973 Wright et al 128/

3,737,251 6/1973 Berman et al 417/12

3,762,280 10/1973 Kreuter et al 92/

3,769,879 11/1973 Lofquist, Jr 92/

3,798,982 3/1974 Lundquist .

3,809,507 5/1974 Baglai 417/

3,810,719 5/1974 Wolthers 417/

3,811,800 5/1974 Shill 417/479

3,874,826 4/1975 Lundquist et al 417/

3,884,228 5/1975 Hahn 128/

3,886,938 6/1975 Szabo et al: 128/

3,888,239 6/1975 Rubinstein 128/

3,894,538 7/1975 Richter 128/

3,895,631 7/1975 Buckles et al 128/

3,895,741 7/1975 Nugent 222/

3,901,231 8/1975 Olson 128/

3.923.060 12/1975 Ellinwood, Jr 128/

3,934,480 1/1976 Nederlof74 .

3,948,589 4/1976 Dubois 417/

3,963,024 6/1976 Goldowsky 128/

3,969,991 7/1976 Comstock et al 92/

3,985,133 10/1976 Jenkins et al 128/

3,990,444 11/1976 Vial 128/

3.993.061 11/1976 O'Leary 128/

3,993,065 11/1976 Szabo et al 128/

3,993,069 11/1976 Buckles et al 128/

3,994,294 11/1976 Knute 128/

4,012,173 3/1977 Everson, Jr 417/

4,029,094 6/1977 Winicki 128/

4,030,495 6/1977 Virag 128/

4,037,598 7/1977 Georgi .

4,039,269 8/1977 Pickering 417/510

4,048,474 9/1977 Olesen 235/ 4,056,043 11/1977 Sriramamurty et al 92/

4,063,551 12/1977 Sweeney .

4,065,230 12/1977 Gezari 417/

4,067,332 1/1978 O'Leary 128/

4,067,334 1/1978 Haller 128/

4,070,946 1/1978 Sandvik et al 91/

4,079,737 3/1978 Miller 128/

4,094,318 6/1978 Burke et al 128/

4,101,057 7/1978 LoMaglio 417/479

4,105,028 8/1978 Sadlier et al 128/

4,117,727 10/1978 Friswell et al 73/

4,121,584 10/1978 Turner et al 128/

4.136.692 1/1979 Goldowsky 128/

4.136.693 1/1979 Dyke 128/

4,137,913 2/1979 Georgi 128/

4,137,915 2/1979 Kamen 128/

4,137,940 2/1979 Faisandier 137/

4,142,524 3/1979 Jassawalla et al 128/

4,236,880 12/1980 Archibald 417/478

Primary Examiner—Richard E. Gluck

Attorney, Agent, or Firm—Kinney, Lange, Braddock,

Westman and Fairbairn

[57] ABSTRACT

is particularly useful in intravenous (IV) feeding includes a disposable pump chamber and a pump housing. The disposable pump chamber has an inlet, an outlet, and first and second flexible rolling diaphragm pumping chambers. First and second cylinders in the pump housing are positioned to receive the first and second flexible rolling diaphragms of the disposable pump chamber. First and second pistons are movable in the first and second cylinders, respectively. In addition, first and second valves are provided in the pump housing. The first valve controls fluid flow between the inlet and the first flexible rolling diaphragm pump chamber, while the second valve controls fluid flow between the first flexible rolling diaphragm pumping chamber and the second flexible rolling diaphragm pumping chamber. A motor and cam shaft drive the first and second pistons and the first and second valves. The first and second valves are controlled so that one valve is closed at all times, thereby providing fail safe operation of the pump.

A small, accurate, reliable and economical pump which

6 Claims, 22 Drawing Figures