Automatic tube loading apparatus for an infusion pump

An automatic tube loading apparatus, for use with an infusion pump, comprises cams (614,624 fig 19) to actuate pawls 514 mounted on layshaft 512 which are operable to draw tube 5 towards a tubestop on platen 500 via tube capture surface 528. The cams are driven by a motor (550 fig 20) having an enco...

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Main Authors MARTIN MONAGHAN, RALPH H LABEDZ, SVANTE ERIC MYREN, GEOFFREY HUTCHINS, ALAN BRUNDLE, MARK HARRIS, HAL DANBY, TIM ALLEN, KEVIN J MORASKI, STUART PAGE, JON PLUMB, JANICE STEWART, THOMAS MCGRAGHAN, JOHN M TURNER, KENNETH M LYNN
Format Patent
LanguageEnglish
Published 29.12.1999
Edition6
Subjects
BLASTING
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
HEATING
HUMAN NECESSITIES
HYGIENE
LIGHTING
MECHANICAL ENGINEERING
MEDICAL OR VETERINARY SCIENCE
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:An automatic tube loading apparatus, for use with an infusion pump, comprises cams (614,624 fig 19) to actuate pawls 514 mounted on layshaft 512 which are operable to draw tube 5 towards a tubestop on platen 500 via tube capture surface 528. The cams are driven by a motor (550 fig 20) having an encoder (702,704,705 fig 20) so that the position of the cams may be deduced. If the tube is outside the loading area, tube reject surface 532 will expel the tube 5. The pawls are driven by sprung cam followers so if the tube 5 is partially loaded, misload activating surface 530 will pinch the tube 5. An electronic circuit detects from a sensor that the pawl has then stopped, but that the cams are still moving, such differential movement causing the motor to reverse direction to open the pawls and expel the tube 5.
Bibliography:Application Number: GB19990021188