Fluid delivery system with pump cassette
First Claim
1. A pump cassette for delivering fluid to patient, comprising:
- a pump housing comprising a first housing member and a second housing member cooperatively defining an enclosed pump chamber with an interior wall;
at least a pair of meshed gears disposed in the pump chamber and separating the pump chamber into a fluid inlet area and a fluid outlet area accessible through respective inlet and outlet ports in the pump housing, anda gear core disposed on a center of each of the gears and formed symmetrically on a top and a bottom of each gear;
a drive element interface formed on each of the gear cores;
wherein the first and second housing members are formed substantially identically such that a top side and the bottom side of the pump housing are substantially identical,wherein the first housing member includes top oriented openings and the second housing member includes bottom oriented openings such that each drive element interface is disposed within a corresponding top or bottom oriented opening permitting the gears to be driven from either the top or bottom of the housing whereby fluid is pressurized for delivery to the patient.
3 Assignments
0 Petitions
Accused Products
Abstract
The fluid delivery system includes a control console adapted to control delivery of fluid to a patient and a pump cassette disposed in a pump cassette socket in the control console and operatively controlled by the control console. The pump cassette includes a pump housing formed by opposing housing members that cooperatively define a pump chamber. A pair of meshed gears is disposed in the pump chamber and separate the pump chamber into a fluid inlet area and a fluid outlet area accessible through respective inlet and outlet ports in the pump housing. The gears are adapted to pressurize fluid for delivery to the patient. Other features of the system include a fluid heater upstream of the pump cassette, air detectors associated with the inlet and outlet ports of the pump cassette, and a sensor to read an encoding device associated with the pump cassette.
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Citations
30 Claims
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1. A pump cassette for delivering fluid to patient, comprising:
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a pump housing comprising a first housing member and a second housing member cooperatively defining an enclosed pump chamber with an interior wall; at least a pair of meshed gears disposed in the pump chamber and separating the pump chamber into a fluid inlet area and a fluid outlet area accessible through respective inlet and outlet ports in the pump housing, and a gear core disposed on a center of each of the gears and formed symmetrically on a top and a bottom of each gear; a drive element interface formed on each of the gear cores; wherein the first and second housing members are formed substantially identically such that a top side and the bottom side of the pump housing are substantially identical, wherein the first housing member includes top oriented openings and the second housing member includes bottom oriented openings such that each drive element interface is disposed within a corresponding top or bottom oriented opening permitting the gears to be driven from either the top or bottom of the housing whereby fluid is pressurized for delivery to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A fluid delivery system, comprising:
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a control console; and a pump cassette connected to and operated by the control console for delivering fluid to a patient, the pump cassette comprising; a pump housing comprising a first housing member and a second housing member cooperatively defining an enclosed pump chamber with an interior wall; and at least a pair of meshed gears disposed in the pump chamber and separating the pump chamber into a fluid inlet area and a fluid outlet area accessible through respective inlet and outlet ports in the pump housing, and adapted to pressurize fluid for delivery to the patient, a gear core disposed on a center of each meshed gear; a drive element interface formed on each of the gear cores; wherein the first and second housing members are formed substantially identically such that a top side and a bottom side of the pump housing are symmetric, wherein the first housing member includes top oriented openings and the second housing member includes bottom oriented openings such that each drive element interface is disposed within the a corresponding top or bottom oriented opening permitting the gears to be driven from either the top or bottom of the housing whereby fluid is pressurized for delivery to the patient. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of preparing a fluid delivery system to provide fluid to a patient, comprising:
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providing a control console adapted to control delivery of fluid to the patient; operatively associating a pump cassette with the control console, the pump cassette comprising; a pump housing defining an enclosed pump chamber; and at least a pair of meshed gears disposed in the pump chamber and separating the pump chamber into a fluid inlet area and a fluid outlet area accessible through respective inlet and outlet ports in the pump housing, wherein the control console is adapted to control operation of the pump cassette for delivering fluid to the patient; and a gear core disposed on a center of each meshed gear; a drive element interface formed on each of the gear cores; wherein the pump housing includes first and second housing members formed substantially identically such that opposing sides of the pump housing are substantially identical, wherein the first housing member includes top oriented openings and the second housing member includes bottom oriented openings such that each drive element interface is disposed within a corresponding top or bottom oriented opening permitting the gears to be driven from either the top or bottom of the housing whereby fluid is pressurized for delivery to the patient; and placing the pump chamber in fluid communication with a source of fluid to be delivered to the patient. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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Specification