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EP0024431A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

NON-PULSATING PUMP FOR INTRAVENOUS SYSTEM AND DISPOSABLE PUMP CHAMBER.

Assignee: 3M Co
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Filing: 1980-09-24
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Granted: —
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Expires: 2000-09-24
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Abstract

Abstract Translated from English Une petite pompe economique, precise et sure est particulierement utile a l'alimentation intraveineuse (IV) et comprend une chambre de pompe jetable (10) et un corps de pompe (12). La chambre de pompe jetable (10) possede une admission (14), une sortie (16), et une premiere et une seconde (26) chambres de pompage a diaphragme d'enroulement flexible. Un premier cylindre (32) et un second cylindre (34) dans le corps de pompe sont positionnes pour recevoir le premier diaphragme a, enroulement flexible (24) et le second diaphragme a enroulement flexible (26) de la chambre de pompe jetable (10). Un premier piston (38) et un second piston (40) sont mobiles dans le premier cylindre (24) et le second cylindre (26), respectivement. De plus, une premiere soupape (44) et une seconde soupape (46) sont montees dans le corps de pompe (12). La premiere soupape (44) commande le debit du fluide entre l'admission et la premiere chambre de pompe a diaphragme a enroulement flexible (24), tandis que la seconde soupape (44) commande le debit du fluide entre la premiere chambre de pompage a diaphragme a enroulement flexible (24) et la seconde chambre de pompage a diaphragme a enroulement flexible (26). Un moteur (94) et un arbre a came (96) entrainent le premier piston (38) et le second piston (40) et la premiere soupape (44) et la seconde soupape (46). La premiere soupape (44) et la seconde soupape (46) sont commandees de sorte qu'une soupape soit fermee a tous moments, assurant ainsi un fonctionnement infaillible de la pompe. A small, economical, precise and safe pump is particularly useful for intravenous (IV) feeding and includes a disposable pump chamber (10) and a pump body (12). The disposable pump chamber (10) has an inlet (14), an outlet (16), and first and second (26) pumping chambers with a flexible winding diaphragm. A first cylinder (32) and a second cylinder (34) in the pump body are positioned to receive the first flexible winding diaphragm (24) and the second flexible winding diaphragm (26) from the disposable pump chamber (10 ). A first piston (38) and a second piston (40) are movable in the first cylinder (24) and the second cylinder (26), respectively. In addition, a first valve (44) and a second valve (46) are mounted in the pump body (12). The first valve (44) controls the flow of fluid between the inlet and the first diaphragm pump chamber with flexible winding (24), while the second valve (44) controls the flow of fluid between the first pumping chamber and flexible winding diaphragm (24) and the second flexible winding diaphragm pumping chamber (26). A motor (94) and a camshaft (96) drive the first piston (38) and the second piston (40) and the first valve (44) and the second valve (46). The first valve (44) and the second valve (46) are controlled so that a valve is closed at all times, thereby ensuring foolproof operation of the pump.

Inventors

  • 👤 Gerald Kent Archibald

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 12:58
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/36; A61M5/365; A61M5/14; A61M5/142; A61M5/14212; A61M5/14224; A61M5/168; A61M5/16831; A61M5/16854; F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/02; F04B43/021; F04B43/08; F04B43/082; F04B7/00; F04B9/00; F04B9/02; F04B9/04; F04B9/042; A61M2205/00; A61M2205/33; A61M2205/3331; A61M2205/3355; A61M2206/00; A61M2206/10; A61M2206/22

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