G - Physics – 01 – N
Patent
G - Physics
01
N
150/11, 128/80
G01N 33/50 (2006.01) G01N 33/48 (2006.01) G01N 33/49 (2006.01)
Patent
CA 1324067
APPARATUS AND METHOD FOR BLOOD CHEMISTRY ANALYSIS Abstract of the Disclosure A device comprising a hypodermic syringe having a needle attached to a piston/cylinder arrangement and a sensor disposed to come in contact with blood drawn into the cylinder for sensing at least one blood component is disclosed. In one embodiment, a sensing surface of the sensor forms a part of the interior surface of the cylinder. In another embodiment, the device includes a smaller cylinder having a coaxial interior channel open at both ends of the smaller cylinder. One end of the cylinder is sealably attached to the end of the syringe cylinder to which the needle is attached. The sensor is located within the wall of the smaller cylinder and its sensing surface is in communication with the coaxial channel. The sensor may protrude into the coaxial channel. The sensor may sense more than one component of the blood simultaneously and be comprised of a plurality of separate sensors. In other embodiments, the sensor is mounted in either an adapter disposed between the needle and syringe or in an enlarged portion of the syringe. The hypodermic syringe is inserted into an artery of a patient and blood is drawn toward the syringe until the blood comes in contact with the sensor(s). After the data is collected the blood is ejected back into the blood stream. Needle sizes as small as twenty-two gauge may be used.
581152
Lombardi Carl A.
Pelikan Glenn W.
Oyen Wiggs Green & Mutala Llp
Spacelabs Inc.
Spacelabs Medical Inc.
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