Infusion pump with dual position syringe locator

• Main Authors: VOSS, LAVEILLE, NASON, CLYDE K
• Format: Patent
• Language: English; French; German
• Published: 28.06.1995
• Edition: 5
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

An infusion pump (10) for controlled delivery of medication from a syringe (12) to a patient. The pump housing (16) includes a syringe chamber (18) and associated lock members (50,52) for receiving and supporting the syringe (12) in one of two different positions. The syringe (12) includes a medication-containing barrel (20) connected to a luer fitting (26) at its nose end by a luer neck (22) of reduced cross sectional size. In one position, the syringe (12) seats into the chamber (18) with the luer neck (22) protruding through an outlet port (24) of mating size and with the luer fitting (26) disposed outside the housing (16), such that the housing (16) defines a lock member (5) engaged axially between the syringe barrel (20) and luer fitting (26) to secure the barrel (20) against axial displacement. In another position, a retainer key (52) is located in the syringe chamber (18) at a position spaced inboard from the outlet port (24) and defines an alternative lock member for axially securing the syringe (12) with the luer fitting (26) disposed inside the housing (16). In either position, the syringe piston plunger (28) is controllably advanced by the pump into the barrel (20) to deliver medication from the nose end of the syringe (12) for administration to a patient via the luer fitting (26) and infusion tubing (14) or the like connected thereto.