Intravenous fluid warming system
AssigneeVyaire Medical, Inc.
InventorsNikolaus GRAVENSTEIN, Christopher VARGA
Life of this patent
Estimating the term…
Abstract
A fluid warming device has a heat exchange body having an input port and an output port and conducts fluid from the input port to the output port. The fluid warming device has a heater assembly configured to transfer heat to the heat exchange body. The fluid warming device may also have a temperature sensor for measuring a temperature of the heater assembly, and a power sensor for measuring a power to the heater assembly. The fluid warming device also has a controller connected to the temperature sensor and the power sensor. The controller calculates a fluid flow rate and a total volume of fluid delivered through the heat exchange body based on the temperature and the power.
Claims22
A fluid warming device, comprising:
- a heat exchange body comprising an input port and an output port and configured to conduct fluid from the input port to the output port;
- a heater assembly configured to transfer heat to the heat exchange body;
- a temperature sensor configured to measure a temperature of the heater assembly;
- a power sensor configured to measure a power to the heater assembly;
- a controller connected to the temperature sensor and the current sensor, the controller configured to determine a fluid flow rate through the heat exchange body based on the temperature and the power.
A fluid warming device, comprising:
- a heat exchange body comprising an input port and an output port and configured to conduct fluid therethrough in one direction from an input port to an output port;
- a housing configured to removably receive the heat exchange body;
- a heater assembly disposed within the housing and configured to transfer heat to the heat exchange body;
- a first slidable cover and a second slidable cover configured to hold the heat exchange body against the heater assembly;
- a temperature sensor configured to measure a temperature of the heater assembly;
- a power sensor configured to measure a power to the heater assembly;
- and
- a controller connected to the temperature sensor and the power sensor, the controller configured to determine a fluid flow rate and a total volume of fluid delivered through the heat exchange body based on the temperature and the power.
A fluid warming device, comprising:
- a heat exchange body comprising an input port and an output port and configured to conduct fluid from an input port to an output port;
- a housing configured to removably receive the heat exchange body;
- a heater assembly disposed within the housing and configured to transfer heat to the heat exchange body;
- a temperature sensor configured to measure a temperature of the heater assembly;
- a current sensor configured to measure a current to the heater assembly;
- and
- a controller connected to the temperature sensor and the current sensor, the controller configured to:
- determine a fluid property corresponding to the fluid;
- determine a temperature difference between the input port and the output port;
- continuously measure the current;
- and
- determine a fluid flow rate based on the fluid property, the temperature difference, and the measured current.
Dependencies are inferred from the claim text.