초록 ▼

An infusion pump for infusing a medical treatment fluid intravenously to a patient includes a collapsible treatment fluid bag juxtaposed with an inflatable drive fluid bladder confined between a pair of opposing containment members which cause the bladder to impinge against the bag as the bladder is

An infusion pump for infusing a medical treatment fluid intravenously to a patient includes a collapsible treatment fluid bag juxtaposed with an inflatable drive fluid bladder confined between a pair of opposing containment members which cause the bladder to impinge against the bag as the bladder is inflated. A drive fluid pump controllably inflates the bladder, thereby displacing treatment fluid from the bag into an outlet tube affixed thereto which conveys the treatment fluid to the patient where it is received intravenously. The treatment fluid flow rate through the tube is controlled by increasing or decreasing the drive fluid pump output and consequently the pressure in the bladder in response to a pressure sensor in fluid communication with the bladder. Alternatively, the treatment fluid flow rate is adjusted by opening or closing the outlet tube by means of an occluder or restrictor positioned along the tube.

대표청구항 ▼

A portable pump for infusing intravenous treatment fluid to a patient, said infusion pump comprising: a collapsible treatment fluid bag; a pressure sensor; an inflatable bladder juxtaposed with said treatment fluid bag, wherein said bladder is in fluid communication with [a]said pressure sensor; m

A portable pump for infusing intravenous treatment fluid to a patient, said infusion pump comprising: a collapsible treatment fluid bag; a pressure sensor; an inflatable bladder juxtaposed with said treatment fluid bag, wherein said bladder is in fluid communication with [a]said pressure sensor; means for venting said bladder; a containment means for impinging said bladder against said treatment fluid bag as said bladder is inflated, said containment means comprising first and second opposing containment members confining said juxtaposed bladder and fluid bag; an electronic control assembly comprising a drive fluid pump in fluid communication with said bladder for inflating said bladder to collapse said treatment fluid bag and expel treatment fluid therefrom[;], wherein said drive fluid pump is also in [fluid]operative communication with an electronic control circuit, which is, in turn, in [fluid]operative communication with said pressure sensor; and an outlet tube in fluid communication with said treatment fluid bag and said patient.