Dialysis system having inductive heating
AssigneesBaxter International Inc., Baxter Healthcare S.A.
InventorsMichael R. Prisco, Yuanpang S. Ding, Tan-Cheng Chou, Tom Johnson
Life of this patent
Estimating the term…
Abstract
A medical fluid machine includes (i) a pump that pumps a medical fluid and (ii) a heater that heats the medical fluid, the heater including an electrically insulative housing, at least one flat sheet of electrically conductive material suitable for contacting the medical fluid, the sheet disposed within the insulative housing, the sheet defining a flow path for the medical fluid in which the medical fluid changes direction at least one time, a primary coil of a transformer located outside the insulative housing, the primary coil configured to induce a current into the at least one conductive sheet, creating heat that may be transferred to the medical fluid.
Claims20
A medical fluid machine comprising:
- a pump that pumps a medical fluid;
- and
- a heater that heats the medical fluid, the heater including an electrically insulative housing, at least one flat sheet of electrically conductive material suitable for contacting the medical fluid, the sheet including a first surface and a second opposing surface, the sheet disposed within the insulative housing, the sheet defining a flow path for the medical fluid in which the medical fluid changes direction at least one time and which forces the medical fluid to contact each of the surfaces of the sheet, a primary coil of a transformer located outside the insulative housing, the primary coil configured to induce a current into the at least one conductive sheet, creating heat that may be transferred to the medical fluid.
A medical fluid heater comprising:
- an electrically insulative housing;
- a heater that heats the medical fluid, the heater including an electrically insulative housing, at least one flat sheet of electrically conductive material suitable for contacting the medical fluid, the sheet including a first surface and a second opposing surface, the sheet disposed within the insulative housing such that the medical fluid contacts each of the surfaces of the sheet, the sheet defining a flow path for the medical fluid in which the medical fluid changes direction at least one time;
- and
- a primary coil of a transformer located outside the insulative housing, the primary coil configured to induce a current into the at least one conductive sheet, creating heat that may be transferred to the medical fluid.
A medical fluid machine comprising:
- a pump that pumps a medical fluid;
- and
- a heater that heats the medical fluid, the heater including an electrically insulative housing which is at least substantially rectangular, at least one flat sheet of electrically conductive material suitable for contacting the medical fluid, the sheet including a first surface and a second opposing surface, the sheet disposed within the insulative housing, the sheet defining a flow path for the medical fluid in which the medical fluid changes direction at least one time and which forces the medical fluid to contact each of the surfaces of the sheet, a primary coil of a transformer located outside the insulative housing, the primary coil configured to induce a current into the at least one conductive sheet, creating heat that may be transferred to the medical fluid.
Dependencies are inferred from the claim text.