Intravenous measuring chamber
First Claim
1. A measuring chamber for use in an intravenous feeding set comprising a rigid chamber having a top and a bottom and side walls connecting said top and bottom;
- said chamber having a larger cross-sectional area near its top than near its bottom with the side walls of the upper portion of said chamber being substantially vertically oriented and the side walls of said lower portion being substantially vertically oriented;
an inlet fluid passageway in said top for placing said chamber in fluid communication with a source of parenteral fluid;
an outlet fluid passageway in said bottom for placing said chamber in fluid communication with an intravenous needle; and
indicia on said chamber extending from near said bottom to near said top for indicating the amount of fluid in said chamber;
said measuring chamber further including an injection site for injecting medication into said chamber below the liquid level of parenteral fluid in said chamber, said injection site being formed in the lower portion of said side walls.
3 Assignments
0 Petitions
Accused Products
Abstract
An improved measuring chamber for use in an intravenous feeding set is defined by a rigid transparent plastic chamber and includes an injection site formed in a side wall of the chamber. With the injection site in this position, the tendency of dust to collect on the injection site is significantly reduced. Moreover, adding medication to the measuring chamber is easier because the attendant need not reach so high. Finally, if the injection site is located below the liquid level of parenteral fluid in the chamber, homogeneous mixing of the parenteral fluid and the medication added thereto can be accomplished by simply pumping the plunger of the hypodermic syringe used to add the medication to the chamber.
26 Citations
6 Claims
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1. A measuring chamber for use in an intravenous feeding set comprising a rigid chamber having a top and a bottom and side walls connecting said top and bottom;
- said chamber having a larger cross-sectional area near its top than near its bottom with the side walls of the upper portion of said chamber being substantially vertically oriented and the side walls of said lower portion being substantially vertically oriented;
an inlet fluid passageway in said top for placing said chamber in fluid communication with a source of parenteral fluid;
an outlet fluid passageway in said bottom for placing said chamber in fluid communication with an intravenous needle; and
indicia on said chamber extending from near said bottom to near said top for indicating the amount of fluid in said chamber;
said measuring chamber further including an injection site for injecting medication into said chamber below the liquid level of parenteral fluid in said chamber, said injection site being formed in the lower portion of said side walls. - View Dependent Claims (2, 3, 4, 5, 6)
- said chamber having a larger cross-sectional area near its top than near its bottom with the side walls of the upper portion of said chamber being substantially vertically oriented and the side walls of said lower portion being substantially vertically oriented;
Specification
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- Resources
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Current AssigneeDelmed, Inc. (Fresenius Medical Care AG)
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Original AssigneeBob Lee Smith
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InventorsSmith, Bob Lee
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Primary Examiner(s)Truluck, Dalton L.
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Application NumberUS05/409,635Time in Patent Office908 DaysField of Search128/214 R, 128/214 C, 128/214 D, 128/214.2, 128/272, 128/2 F, 215/247, 215/248, 215/249, 215/309US Class Current604/246CPC Class CodesA61M 5/1412 Burettes, measuring cylinde...
