Methods circuits devices assemblies systems and associated computer executable code for sensing and analyzing fluid characteristics within a conduit of a medical device and air bubbles
AssigneeQ-Core Medical Ltd.
InventorsBoaz Eitan, Andrei Yosef, David Mizrahi, Ram Shtoltz, Rafi Greenfield
Life of this patent
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Abstract
The present invention includes methods, circuits, devices, assemblies, systems and associated computer executable code for monitoring medical conduits, sensing and measuring parameters of fluids (liquid and/or gas) within medical conduits and/or processing sensed/measured parameters of fluids within medical conduits. The present invention further includes medical infusion devices and/or systems including the monitoring, sensing, measuring and analyzing devices and methods described herein.
Claims15
An assembly for spectral analysis of fluid within a conduit, said assembly comprising:
- a multi-spectral light emitter adapted to emit light in two or more distinct wave bands;
- a multi-spectral light sensor;
- an emitter-line interface and a sensor-line interface, jointly adapted to mount said emitter and said sensor on opposing sides of the conduit;
- and
- signal processing circuitry communicatively coupled to said sensor and configured to receive and analyze an electrical signal generated by the sensor and, in response to the analyzing, detect parameters indicative of fluid transitions within the conduit to distinguish between liquid and gas for:
- (i) at least a first liquid that has (a) a spectral signature that is similar to air at a first wave band of the two or more distinct wave bands, and (b) a spectral signature that is distinct from air at a second wave band of the two or more distinct wave bands;
- and
- (ii) at least a second liquid that has (a) a spectral signature that is similar to air at the second wave band, and (b) a spectral signature that is distinct from air at the first wave band.
A medical system for delivery of fluid, said system comprising:
- a pump configured to pump fluid through a conduit;
- a pressure sensor mounted upon the pump and adapted to sense pressure within the conduit;
- a clamp adapted to apply force to the conduit, thereby at least partially obstructing fluid flow through the conduit;
- an interface adapted to attach or secure said clamp to the conduit;
- such that the clamp is positioned to at least partially obstruct fluid flow through the conduit upon application;
- first signal processing circuitry communicatively coupled to said pressure sensor and said clamp and configured to measure a rate of change of pressure within the conduit upon application of said clamp, based on output from said pressure sensor;
- a multi-spectral light emitter adapted to emit light in two or more distinct wave bands;
- a multi-spectral light sensor;
- an emitter-line interface and a sensor-line interface, jointly configured to mount said emitter and said sensor to said pump, on opposing sides of the conduit;
- and
- second signal processing circuitry communicatively coupled to said multi-spectral light sensor, and adapted to receive and analyze an electrical signal generated by the multi-spectral light sensor and, in response to the analyzing, detect parameters indicative of fluid transitions within the conduit to distinguish between liquid and gas for:
- (i) at least a first liquid that has (a) a spectral signature that is similar to air at a first wave band of the two or more distinct wave bands, and (b) a spectral signature that is distinct from air at a second wave band of the two or more distinct wave bands;
- and
- (ii) at least a second liquid that has (a) a spectral signature that is similar to air at the second wave band, and (b) a spectral signature that is distinct from air at the first wave band.
Dependencies are inferred from the claim text.