Constant pressure apparatus for the administration of fluids intravenously
First Claim
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1. A constant-pressure apparatus for an administration of fluids intravenously, comprising:
- a fluid chamber, which contains a fluid to be administered;
a first hose, in communication with said fluid chamber, for directing the fluid to an intravenous administration needle;
a liquefied-gas cartridge, containing liquefied gas, in communication with said fluid chamber, for providing a constant pressure source to exert pressure onto said fluid chamber, thus forcing the fluid to exit through said first hose at a constant rate; and
a pressure communicator for communicating the constant pressure of said liquefied-gas cartridge to said fluid chamber.
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Abstract
A constant-pressure apparatus for the administration of fluids intravenously includes a container for a fluid to be administered, and a liquefied-gas source having a constant gas pressure and arranged in association with the container so as to apply the constant pressure of the liquefied-gas cartridge to the fluid therein, thus forcing the fluid to exit through an outlet of the container at a constant rate.
133 Citations
27 Claims
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1. A constant-pressure apparatus for an administration of fluids intravenously, comprising:
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a fluid chamber, which contains a fluid to be administered;
a first hose, in communication with said fluid chamber, for directing the fluid to an intravenous administration needle;
a liquefied-gas cartridge, containing liquefied gas, in communication with said fluid chamber, for providing a constant pressure source to exert pressure onto said fluid chamber, thus forcing the fluid to exit through said first hose at a constant rate; and
a pressure communicator for communicating the constant pressure of said liquefied-gas cartridge to said fluid chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 19, 20, 21, 22, 24, 25, 26, 27)
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16. A method of administering fluids intravenously, at a constant pressure, comprising the steps of:
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providing a source of liquefied gas of a desired vapor pressure; and
exerting the vapor pressure on a fluid chamber which is arranged for intravenous administration of fluids.
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18. A method of administering fluids intravenously, at a constant pressure, comprising the steps of:
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providing a source of liquefied gas of a desired vapor pressure; and
exerting the vapor pressure on a fluid chamber which is arranged for intravenous administration of fluids.
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23. A constant-pressure apparatus for intravenously administrating fluids, comprising:
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a flexible bag arranged within a pressurizable sleeve and having an outlet, said flexible bag adapted for containing a fluid to be administered; and
a liquefied-gas source having a constant gas pressure and arranged in association with said flexible bag so as to apply a constant pressure of said liquefied-gas source to said bag and to the fluid provided therein, and force the fluid to exit through said outlet at a constant rate.
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Specification