Infusion pump, treatment fluid bag therefor, and method for the use thereof
First Claim
1. A pump for infusing intravascular treatment fluid to a patient, said infusion pump comprising:
- (1) a containment receptacle for receiving a removable, collapsible treatment fluid bag having an outlet tube for establishing fluid communication between the treatment fluid bag and the patient;
(2) an inflatable bladder positioned in the containment receptacle to exert force on the treatment fluid bag as the bladder is inflated when the treatment fluid bag is positioned within the containment receptacle;
(3) an electronic control system for electronically controlling pressure within the bladder so as to collapse the treatment fluid bag and controllably expel treatment fluid from the treatment fluid bag through the outlet tube.
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Accused Products
Abstract
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.
118 Citations
29 Claims
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1. A pump for infusing intravascular treatment fluid to a patient, said infusion pump comprising:
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(1) a containment receptacle for receiving a removable, collapsible treatment fluid bag having an outlet tube for establishing fluid communication between the treatment fluid bag and the patient; (2) an inflatable bladder positioned in the containment receptacle to exert force on the treatment fluid bag as the bladder is inflated when the treatment fluid bag is positioned within the containment receptacle; (3) an electronic control system for electronically controlling pressure within the bladder so as to collapse the treatment fluid bag and controllably expel treatment fluid from the treatment fluid bag through the outlet tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A portable pump for infusing intravascular treatment fluid to a patient, the infusion pump comprising:
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(1) a containment receptacle for receiving a collapsible treatment fluid bag having an outlet tube for establishing fluid communication between the treatment fluid bag and the patient; (2) an inflatable bladder positioned in the containment receptacle to exert force on the treatment fluid bag as the bladder is inflated when the treatment fluid bag is positioned within the containment receptacle; (3) a pressure sensor positioned within the containment receptacle to detect force exerted by the bladder on the treatment fluid bag; (4) an electronic control assembly comprising a drive fluid pump in fluid communication with the bladder for inflating the bladder to collapse the treatment fluid bag and expel treatment fluid from the treatment fluid bag through the outlet tube, wherein the drive fluid pump is in operative communication with an electronic control circuit, which is, in turn, in operative communication with the pressure sensor. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification