Charging systems for devices related to dialysis treatments

• US 10,199,852 B2
• Filed: 11/13/2015
• Issued: 02/05/2019
• Est. Priority Date: 11/13/2015
• Status: Active Grant

• Current Assignee: Fresenius Medical Care Holdings Incorporated (Fresenius SE & Co. KGaA)
• Original Assignee: Fresenius Medical Care Holdings Incorporated (Fresenius SE & Co. KGaA)
• Inventors: Halliburton, Donovan, Brown, Alexander Joseph, Yik, Kelly
• Primary Examiner(s): Grant, Robert
• Application Number:
  US14/940,437
• Publication Number:
  US 20170141601A1
• Time in Patent Office: 1,180 Days
• Field of Search: 320108
• CPC Class Codes: A61M 1/14 Dialysis systems; Artificial kidneys; Blood oxygenators semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 2205/04 implanted
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2205/8237 Charging means
• CPC Class Codes: A61M 2205/8293 Solar
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence

Abstract

In one aspect of the invention, a method of charging a medical device includes receiving radiofrequency signals from a remote machine remote from the medical device via a receiver of the medical device. The method includes converting the radiofrequency signals into electrical energy via a generator of the medical device. The method includes storing the electrical energy in an energy cell of the medical device. The method also includes powering a power consumption component of the medical device by transmitting the energy from the energy cell to the power consumption component.

Claims

1. A method of charging a medical device comprising:

receiving radiofrequency signals from a dialysis machine remote from the medical device via a receiver of the medical device, wherein the medical device comprises a wetness detector;

converting the radiofrequency signals into electrical energy via a generator of the wetness detector;

storing the electrical energy in an energy cell of the wetness detector;

powering an electric circuit of the wetness detector by transmitting the energy from the energy cell to the electric circuit;

detecting a state of the wetness detector via the electric circuit; and

wirelessly transmitting a signal from the wetness detector to the dialysis machine for controlling an operation of the dialysis machine responsive to detecting a wetness state of the wetness detector.

2. The method of claim 1, wherein the operation of the dialysis machine comprises pumping blood.

3. The method of claim 1, wherein powering the electric circuit comprises applying power to an electrode of the wetness detector to detect an electrical property related to the wetness state.

4. The method of claim 1, further comprising testing a property of blood with the medical device.

5. The method of claim 1, further comprising:

receiving distinct energy types from distinct energy sources positioned remote from the wetness detector via the receiver.

6. The method of claim 5, further comprising:

converting the distinct types of energy into electrical energy via the generator.

7. The method of claim 5, wherein receiving distinct energy types includes receiving energy selected from the group consisting of:

radiofrequency signals, thermal energy, light energy, and kinetic energy.

8. The method of claim 7, wherein receiving distinct energy types includes receiving energy via a thermocouple.

9. The method of claim 7, wherein receiving distinct energy types includes receiving energy via a photosensor.

10. The method of claim 7, wherein receiving distinct energy types includes receiving energy via a microelectromechanical system (MEMS) device.

11. A medical system, comprising:

a receiver configured to wirelessly receive energy from at least one distinct energy source emitting a distinct type of energy;

a generator coupled to the receiver, the generator configured to convert the distinct type of energy into electrical energy;

an energy cell coupled to the generator, the energy cell configured to store the electrical energy;

a wetness detector communicably coupled to the energy cell to consume the stored electrical energy; and

a wireless transmission system communicably coupled to the power consumption component and configured to transmit a signal to the dialysis machine from the wetness detector for controlling an operation of the dialysis machine responsive to detecting a wetness state of the medical device.

12. The medical system according to claim 11, wherein the receiver is configured to wirelessly receive energy from at least two distinct energy sources emitting distinct types of energy.

13. The medical system according to claim 12, wherein at least one of the energy sources is the dialysis machine.

14. The medical system according to claim 12, further comprising:

a sensor coupled to the receiver, the sensor configured to sense a parameter related to the distinct types of energy; and

a controller coupled to the sensor, the controller configured to tune one or more of the receiver and the generator to absorb or transform a selected type of energy.

15. The medical system according to claim 12, wherein the distinct types of energy are selected from the group consisting of:

radiofrequency signals, thermal energy, light energy, and kinetic energy.

16. The medical system according to claim 11, wherein the distinct type of energy includes radiofrequency signals, and wherein the receiver includes an antenna.

17. The medical system according to claim 16, wherein the generator is configured to convert the radiofrequency signals to direct current.

18. The medical system according to claim 11, wherein the distinct type of energy includes thermal energy, and wherein the receiver includes a thermocouple.

19. The medical system according to claim 18, wherein the generator includes a thermoelectric generator.

20. The medical system according to claim 11, wherein the receiver is a non-inductive receiver.

21. The medical system according to claim 11, wherein the medical system houses the energy cell in a liquid impervious housing.

22. The medical system according to claim 11, wherein the energy cell includes a capacitor.

23. The medical system according to claim 11, wherein the distinct type of energy includes kinetic energy, and wherein the receiver includes a microelectromechanical system (MEMS) device.

24. The medical system according to claim 23, wherein the generator includes a MEMS generator.

25. The medical system according to claim 11, wherein the distinct type of energy includes light energy, and wherein the receiver includes a photosensor.

26. The medical system according to claim 25, wherein the generator includes a photovoltaic cell.

27. The medical system according to claim 11, further comprising:

a programmable clock configured to tune at least one of the receiver and the generator based on a time of day.

28. The medical system according to claim 12, further comprising:

a controller coupled to the generator, the controller configured to evaluate an efficiency of energy generation from each of the at least two distinct energy sources and to tune the receiver to receive a selected type of energy and the generator to generate the selected type of energy source.

29. The medical system according to claim 28, wherein tuning comprises shutting down one or more components of the receiver.

30. A dialysis system for wirelessly charging a portable medical device, the dialysis system comprising:

a sensor configured to detect a presence of the portable medical device;

a transmitter configured to transmit radiofrequency signals from the dialysis system to the portable medical device to power an electric circuit of the medical device comprising a wetness detector;

a receiver configured to receive a signal wirelessly transmitted from the portable medical device responsive to detection of a state of the medical device via the electric circuit; and

a controller configured to control blood pumping of the dialysis system in response to detection of a wetness state.

31. A method of wirelessly charging a portable medical device, the method comprising:

detecting a presence of the portable medical device comprising a wetness detector;

transmitting radiofrequency signals from a dialysis machine to the portable medical device to power a component of the portable medical device

receiving a signal wirelessly transmitted from the portable medical device responsive to detection of a state of the portable medical device; and

controlling blood pumping of the dialysis machine in response to a wetness state detection of the wetness detector.