BLOOD PARAMETER SENSOR AND FLOW CONTROL SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT
First Claim
1. A system for sensing a parameter of blood in a patient'"'"'s vasculature, the system comprising:
- a vascular access device configured for connection to the patient'"'"'s vasculature and defining an internal fluid passageway configured for fluid communication with the blood;
at least one parameter sensor supported by the vascular access device and configured to sense the blood parameter;
at least one pressure sensor supported in the internal fluid passageway of the vascular access device; and
a flow control device connected in fluid communication with the internal fluid passageway and connected in communication with the at least one pressure sensor,wherein the flow control device is configured to adapt fluid flow within the internal fluid passageway based on communication with the at least one pressure sensor.
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Accused Products
Abstract
A system is provided for sensing a blood parameter, such as an analyte, in a patient'"'"'s vasculature. The system includes a vascular access device, a parameter sensor, a pressure sensor and a flow control device. The vascular access device supports the parameter sensor within the vasculature of the patient and includes an internal passageway for drawing samples onto and calibrating the parameter sensor. The pressure sensor is within the internal passageway. The flow control device modulates sample draw, calibration and flushing fluid flows to prevent or remove clots based on communication with the pressure sensor. Advantageously, the dynamic, adaptive modulation of flow reduces flushing and other cycle times while at the same time improving clot flushing. As another advantage, this enables reduction or elimination of the use of heparin and other anticoagulant components in the solution supplied for flushing and/or calibration.
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Citations
54 Claims
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1. A system for sensing a parameter of blood in a patient'"'"'s vasculature, the system comprising:
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a vascular access device configured for connection to the patient'"'"'s vasculature and defining an internal fluid passageway configured for fluid communication with the blood; at least one parameter sensor supported by the vascular access device and configured to sense the blood parameter; at least one pressure sensor supported in the internal fluid passageway of the vascular access device; and a flow control device connected in fluid communication with the internal fluid passageway and connected in communication with the at least one pressure sensor, wherein the flow control device is configured to adapt fluid flow within the internal fluid passageway based on communication with the at least one pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of sensing a parameter of blood in a patient'"'"'s vasculature, the method comprising:
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drawing blood over a parameter sensor and into an internal fluid passageway defined in a vascular access device; sensing a pressure in the internal fluid passageway; determining, based on the pressure sensed, that at least a partial occlusion has formed; and flushing the internal fluid passageway with a solution so as to clear the occlusion. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A fluid-flow optimization system for connecting to a vascular access device connected to a patient'"'"'s vasculature and supporting at least one parameter sensor and at least one pressure sensor, the system comprising:
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a flow control device connected in fluid communication with the internal fluid passageway and connected in communication with the at least one pressure sensor; wherein the flow control device is configured to adapt fluid flow within the internal fluid passageway based on communication with the at least one pressure sensor. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification