Intravenous pump chamber
First Claim
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1. An intravenous pump chamber for an intravenous pump of the peristaltic type having three contact members with outer contact members programmed to constitute valve members and the central member a pumping member comprising:
- a pump chamber defined by a rigid housing member presenting a central cavity portion;
tubular portions extending from said pump chamber in a fluid communication with said cavity;
a length of intravenous tubing secured to each tubular portion, said tubing presenting a contact surface and being capable of total collapse by one of said two outer contact members;
a diaphragm member positioned over said cavity and contacting said pump chamber adjacent said cavity portion; and
combined mechanical and sealing means operatively associated with said diaphragm member and said housing to retain said diaphragm in a taut manner over said cavity portion, said mechanical means providing an initial and subsequent stretching of said diaphragm member independently of said sealing means. pg,11
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Accused Products
Abstract
A disposable intravenous pump chamber cassette for an intravenous administration set which provides a fast yet fluid tight connection for a diaphragm portion to the pump chamber housing. The pump chamber is specifically constructed to be utilized in conjunction with a peristaltic-type pump having three contact members wherein the outer contact members serve as valves and the central contact member as a pumping member.
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Citations
14 Claims
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1. An intravenous pump chamber for an intravenous pump of the peristaltic type having three contact members with outer contact members programmed to constitute valve members and the central member a pumping member comprising:
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a pump chamber defined by a rigid housing member presenting a central cavity portion; tubular portions extending from said pump chamber in a fluid communication with said cavity; a length of intravenous tubing secured to each tubular portion, said tubing presenting a contact surface and being capable of total collapse by one of said two outer contact members; a diaphragm member positioned over said cavity and contacting said pump chamber adjacent said cavity portion; and combined mechanical and sealing means operatively associated with said diaphragm member and said housing to retain said diaphragm in a taut manner over said cavity portion, said mechanical means providing an initial and subsequent stretching of said diaphragm member independently of said sealing means. pg,11 - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A combined intravenous administration set and pump cassette comprising:
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a pump chamber defined by a rigid housing member presenting a central cavity portion; two tubular portions extending from said pump chamber and in fluid communication with said cavity; a length of intravenous tubing secured to each tubular portion, said tubing presenting a contact surface and being capable of total collapse by a contact member; a diaphragm member positioned over said cavity and contacting said pump chamber adjacent said cavity portion; combined mechanical and sealing means operatively associated with said diaphragm member and said housing to retain said diaphragm in a taut manner over said cavity portion, said mechanical means providing a stretching of said diaphragm member independently of said sealing means; a drip chamber interconnected to one of said lengths of intravenous tubing; and a fluid control clamp and needle adapter interconnected to the other length of intravenous tubing. - View Dependent Claims (11, 12, 13, 14)
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Specification