Pump Module Fluidically Isolated Displacement Device
First Claim
Patent Images
1. A pump module for use in a medical fluid dispensing system, said pump module comprising:
- a pump body having first and second portions;
first and second fluid chambers formed in at least one of said first and second portions of said pump body;
a fluid flow network formed in at least one of said first and second portions of said pump body for supplying fluid from a fluid source to said fluid chambers and for dispensing fluid from said chambers during operation of said pump module;
at least one membrane operably associated with said first and second fluid chambers; and
first and second actuators operably associated with said at least one membrane and with said first and second fluid chambers, respectively, for displacing said membrane and thereby displacing fluid from said first and second chambers, respectively.
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Abstract
A pump module for use in a medical fluid dispensing system is provided that includes a pump body having first and second portions where at least one of the first and second portions includes first and second fluid chambers. The module further includes at least one membrane operably associated with the fluid chambers, and first and second actuators operably associated with this membrane for the purpose of displacing the membrane and further for displacing fluid from the first and second chambers.
71 Citations
25 Claims
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1. A pump module for use in a medical fluid dispensing system, said pump module comprising:
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a pump body having first and second portions; first and second fluid chambers formed in at least one of said first and second portions of said pump body; a fluid flow network formed in at least one of said first and second portions of said pump body for supplying fluid from a fluid source to said fluid chambers and for dispensing fluid from said chambers during operation of said pump module; at least one membrane operably associated with said first and second fluid chambers; and first and second actuators operably associated with said at least one membrane and with said first and second fluid chambers, respectively, for displacing said membrane and thereby displacing fluid from said first and second chambers, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A pump module for use in a medical fluid dispensing system comprising:
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a pump body having first and second portions; first and second fluid chambers formed in at least one of said first and second portions of said pump body; a fluid flow network formed in at least one of said first and second portions of said pump body for supplying fluid from a fluid source to said fluid chambers and for dispensing fluid from said chambers during operation of said pump module; at least one membrane operably associated with said first and second fluid chambers; first and second actuators operably associated with said at least one membrane and with said first and second fluid chambers, respectively, for displacing said membrane and thereby displacing fluid from said first and second chambers, respectively; first and second openings formed in at least one of said first and second portions of said pump body, wherein said first and second openings spatially correspond with said first and second fluid chambers, respectively; a first actuator operably associated with said membrane and said first chamber for displacing said membrane and thereby displacing fluid from said first chamber into said fluid flow network; a second actuator operably associated with said membrane and said second chamber for displacing said membrane and thereby displacing fluid from said second chamber into said fluid flow network; and at least one valve which, when activated, interrupts fluid flow in the fluid network. - View Dependent Claims (16, 17)
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18. A method of manufacturing a pump module for use in a medical fluid dispensing system comprising:
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using a non-compliant material to form a pump body having first and second portions; forming first and second fluid chambers in at least one of said first and second portions of said pump body; forming a fluid flow network in at least one of said first and second portions of said pump body for supplying fluid from a fluid source to said fluid chambers and for dispensing fluid from said chambers during operation of said pump module; forming first and second openings in the other of the first and second portions of the pump body, wherein the first and second openings correspond to the first and second fluid chambers, respectively; positioning at least one membrane between said first and second portions to fluidically seal said fluid chambers and said fluid flow network such that said membrane is operably associated with said fluid chambers and said fluid flow network; providing first and second actuators positionally associated with said first and second fluid chambers, respectively, to be operably associated with said membrane for displacing said membrane and thereby displacing fluid from said first and second chambers; positioning said membrane between said first and second portions of said pump body; and securing said first and second portions of said pump body together. - View Dependent Claims (19, 20, 21)
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22. A method for pumping fluid in a medical fluid dispensing system comprising the steps of:
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providing a pump body having first and second portions where at least one of said first and second portions includes first and second fluid chambers and a fluid flow network and wherein at least one membrane is disposed between said first and second portions; supplying a fluid through said fluid flow network to said fluid chambers; displacing said membrane at said first and second fluid chambers thereby displacing fluid from said first and second chambers, through said fluid network, and out of said pump body. - View Dependent Claims (23, 24, 25)
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Specification