Systems and methods for cleaning medical device electrodes

Patent metadata

Field	Value
Publication number	US-10227708-B2
Application number	US-201514877002-A
Country	US
Kind code	B2
Filing date	Oct 7, 2015
Priority date	Nov 18, 2014
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

An electrode cleaning system includes a medical device including a plurality of electrodes, a fluid reservoir including an electrolytic solution, and a cleaning device. The cleaning device is electrically coupled to the medical device, and is configured to channel a DC current between at least one pair of electrodes of the plurality of electrodes when the plurality of electrodes are submerged in the fluid reservoir.

First claim

What is claimed is:

1. An electrode cleaning system comprising:
a medical device comprising a plurality of electrodes and an electrical cable;
a fluid reservoir comprising an electrolytic solution;
a cleaning device comprising switching circuitry; and
a connector electrically coupling the cleaning device to the medical device, the connector providing an interface between the electrical cable and the switching circuitry of the cleaning device, the cleaning device configured to channel a DC current between at least one pair of electrodes of the plurality of electrodes when the plurality of electrodes of the medical device are submerged in the fluid reservoir.

2. The electrode cleaning system of claim 1 , wherein the cleaning device is configured to:
channel the DC current between the at least one pair of electrodes in a first direction for a first period of time; and
channel the DC current between the at least one pair of electrodes in a second direction for a second period of time, wherein the second direction is opposite from the first direction.

3. The electrode cleaning system of claim 1 , wherein the fluid reservoir is a saline reservoir.

4. The electrode cleaning system of claim 1 , wherein the medical device is a catheter configured for use in a cardiac mapping or modeling system.

5. The electrode cleaning system of claim 1 , wherein the cleaning device further comprises an impedance measurement circuit configured to measure impedances between the plurality of electrodes.

6. The electrode cleaning system of claim 5 , wherein the impedance measurement further circuit is further configured to:
measure a temperature of the electrolytic solution; and
normalize the measured impedances based on the measured temperature.

7. The electrode cleaning system of claim 5 , wherein the cleaning device further comprises a processing device communicatively coupled to the impedance measurement circuit, the processing device configured to verify whether or not the medical device is currently in-vivo based on measurements acquired by the impedance measurement circuit.

8. The electrode cleaning system of claim 5 , wherein the cleaning device further comprises a processing device communicatively coupled to the impedance measurement circuit, the processing device configured to determine whether or not the at least one pair of electrodes is substantially clean based on measurements acquired by the impedance measurement circuit.

9. A cleaning device configured to electrically couple to a medical device having a plurality of electrodes, the cleaning device comprising:
at least one current source configured to generate a DC current;
a plurality of switches operable to channel the DC current between at least one pair of electrodes of the plurality of electrodes when the plurality of electrodes are submerged in a fluid reservoir including an electrolytic solution; and
a processing device configured to determine whether or not the at least one pair of electrodes is substantially clean, and configured to generate an alert upon a determination that the at least one pair of electrodes is substantially clean, wherein the alert includes at least one of an audible alarm, activation of an indicator light, and display of a notification stating a cleaning process is complete.

10. The cleaning device of claim 9 , wherein the at least one current source comprises:
a first current source configured to generate a first DC current to be channeled between a first pair of electrodes of the at least one pair of electrodes; and
a second current source configured to generate a second DC current to be channeled between a second pair of electrodes of the at least one pair of electrodes.

11. The cleaning device of claim 9 , wherein the cleaning device is configured to:
channel the DC current between the at least one pair of electrodes in a first direction for a first period of time; and
channel the DC current between the at least one pair of electrodes in a second direction for a second period of time, wherein the second direction is opposite from the first direction.

12. The cleaning device of claim 9 further comprising an impedance measurement circuit configured to measure impedances between the plurality of electrodes.

13. The cleaning device of claim 12 wherein the processing device is communicatively coupled to the impedance measurement circuit, the processing device configured to verify whether or not the medical device is currently in-vivo based on measurements acquired by the impedance measurement circuit.

14. The cleaning device of claim 12 wherein the processing device communicatively coupled to the impedance measurement circuit, the processing device configured to determine whether or not the at least one pair of electrodes is substantially clean based on measurements acquired by the impedance measurement circuit.

15. The cleaning device of claim 9 , wherein the cleaning device is a portable, handheld device.

16. A method for cleaning a plurality of electrodes, the method comprising:
electrically coupling a cleaning device to a medical device including the plurality of electrodes;
submerging the plurality of electrodes in a fluid reservoir including an electrolytic solution; and
channeling, using the cleaning device, a DC current between at least one pair of electrodes of the plurality of electrodes.

17. The method of claim 16 , wherein channeling a DC current comprises:
channeling the DC current between the at least one pair of electrodes in a first direction for a first period of time; and
channeling the DC current between the at least one pair of electrodes in a second direction for a second period of time, wherein the second direction is opposite from the first direction.

18. The method of claim 16 , further comprising measuring impedances between the plurality of electrodes using an impedance measurement circuit included within the cleaning device.

19. The method of claim 18 , further comprising:
measuring a temperature of the electrolytic solution; and
normalizing the measured impedances based on the measured temperature.

20. The method of claim 16 , wherein electrically coupling a cleaning device to a medical device comprises electrically coupling a portable, handheld cleaning device to the medical device.

Assignees

• St Jude Medical Cardiology Div Inc

Inventors

• Curran Timothy G

Classifications

• C25F1/02 Primary

  Pickling; Descaling · CPC title

• C25F7/00

  Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects (for both electrolytic coating and removal C25D); Servicing or operating · CPC title

• C25F1/00

  Electrolytic cleaning, degreasing, pickling or descaling · CPC title