Blood monitoring system
First Claim
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1. A device for periodically monitoring at least one parameter of blood from a patient, comprising:
- an access device configured to access blood in a patient;
a fluid channel system connectable to the access device;
a pump configured to transport blood through the fluid channel system;
a dispenser connectable to the fluid channel system and configured to dispense a blood sample; and
a plurality of test substrates in a cassette or cartridge;
at least one movable sample reservoir configured to separate from the dispenser and to transport the blood sample towards a test substrate in the cassette or cartridge;
a sensor configured to analyze the test substrate and produce a sensor signal indicative of at least one parameter; and
a signal processor configured to receive the sensor signal.
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Abstract
The present invention is directed towards apparatuses and methods for the automated measurement of blood analytes and blood parameters for bedside monitoring of patient blood chemistry. Particularly, the current invention discloses a programmable system that can automatically draw blood samples at a suitable programmable time frequency (or at predetermined timing), can automatically analyze the drawn blood samples and immediately measure and display blood parameters such as glucose levels, hematocrit levels, hemoglobin blood oxygen saturation, blood gases, lactate or any other blood parameter.
284 Citations
21 Claims
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1. A device for periodically monitoring at least one parameter of blood from a patient, comprising:
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an access device configured to access blood in a patient; a fluid channel system connectable to the access device; a pump configured to transport blood through the fluid channel system; a dispenser connectable to the fluid channel system and configured to dispense a blood sample; and a plurality of test substrates in a cassette or cartridge; at least one movable sample reservoir configured to separate from the dispenser and to transport the blood sample towards a test substrate in the cassette or cartridge; a sensor configured to analyze the test substrate and produce a sensor signal indicative of at least one parameter; and a signal processor configured to receive the sensor signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for periodically monitoring at least one parameter of blood from a patient, comprising:
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withdrawing blood from a patient; transporting the blood through a fluid channel system to a dispenser; dispensing a sample of the blood through a dispenser to a movable sample reservoir; separating the movable sample reservoir and the sample from the dispenser; subsequently transporting the sample via the movable sample reservoir to a first test substrate located in a cassette or cartridge; analyzing the test substrate with a sensor and producing a sensor signal indicative of at least one parameter; and receiving and processing the sensor signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification