Shock wave electrodes with fluid holes

Patent metadata

Field	Value
Publication number	US-9566209-B2
Application number	US-201514929899-A
Country	US
Kind code	B2
Filing date	Nov 2, 2015
Priority date	Jun 22, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

Medical devices utilizing shock waves with spark gap electrodes that include fluid holes into the respective electrode cores.

First claim

What is claimed is:

1. A shock wave applicator device, comprising:
an applicator head including an enclosure sealed by a membrane;
a liquid mixture including water with a buffer and one or more catalysts disposed within the enclosure;
a first electrode having a ring-shaped first tip surface disposed in the liquid mixture in the enclosure and the first electrode including a plurality of holes into a first core of the first electrode, wherein said first core is open to a central opening in the ring-shaped first tip surface;
a second electrode having a ring-shaped second tip surface disposed in the liquid mixture in the enclosure and the second electrode including a plurality of holes into a second core of the second electrode, wherein said second core is open to a central opening in the ring-shaped second tip surface, and wherein the second tip surface of the second electrode is spaced apart from the first tip surface of the first electrode by a spark gap distance, and wherein tip surface dimensions of the second electrode tip surface are larger than tip surface dimensions of the first electrode; and
a controller and a power source coupled to the first and second electrodes.

2. The shock wave applicator device of claim 1 , wherein the first electrode is cylindrical.

3. The shockwave applicator of claim 2 , wherein the plurality of holes of the first electrode are radial holes of the first electrode and the plurality of holes of the second electrode are radial holes of the second electrode.

4. The shockwave applicator device of claim 3 , wherein the one or more catalysts includes a first catalyst comprising 22 to 28 milligrams palladium with active charcoal per milliliter of water and a second catalyst comprising 1.9 to 2 milligrams palladium oxide per milliliter of water, and wherein the buffer has a pH of 6 and is in an amount of 4 to 4.5 microliters of buffer per milliliter of water.

5. The shockwave applicator device of claim 3 , wherein the one or more catalysts includes a first catalyst comprising 22 to 28 milligrams palladium with active charcoal per milliliter of water and a second catalyst comprising 2 to 3 milligrams pyrogenic silica per milliliter of water, and wherein the buffer has a pH of 10 and is in an amount of 5 to 6 microliters of buffer per milliliter of water.

6. The shockwave applicator device of claim 3 , further comprising a stepper motor coupled to at least one of the electrodes, wherein the stepper motor is actuated by the controller to incrementally adjust the spark gap distance between the electrodes.

7. The shockwave applicator device of claim 3 , further comprising a handle coupled to at least one of the first electrode and second electrode for manual adjustment of the spark gap distance between the electrodes.

8. The shockwave applicator device of claim 3 , wherein the controller determines spark gap distance between the electrodes by calculation of equivalent capacitance of the applicator head.

9. The shockwave applicator device of claim 2 , further comprising a handle coupled to at least one of the first electrode and second electrode for manual adjustment of the spark gap distance between the electrodes.

10. The shockwave applicator device of claim 2 , further comprising a display operatively coupled to the controller and providing viewable instructions for adjustment of the spark gap distance between the electrodes.

11. The shockwave applicator device of claim 2 , wherein the controller determines spark gap distance between the electrodes by calculation of equivalent capacitance of the applicator head.

12. The shockwave applicator device of claim 11 , further comprising a stepper motor coupled to at least one of the electrodes, wherein the stepper motor is actuated by the controller to incrementally adjust the spark gap distance between the electrodes.

13. The shockwave applicator device of claim 2 , further comprising a stepper motor coupled to at least one of the electrodes, wherein the stepper motor is actuated by the controller to incrementally adjust the spark gap distance between the electrodes.

14. The shockwave applicator of claim 1 , wherein the plurality of holes of the first electrode are radial holes of the first electrode and the plurality of holes of the second electrode are radial holes of the second electrode.

15. The shockwave applicator device of claim 1 , wherein the one or more catalysts includes a first catalyst comprising 22 to 28 milligrams palladium with active charcoal per milliliter of water and a second catalyst comprising 1.9 to 2 milligrams palladium oxide per milliliter of water, and wherein the buffer has a pH of 6 and is in an amount of 4 to 4.5 microliters of buffer per milliliter of water.

16. The shockwave applicator device of claim 1 , wherein the one or more catalysts includes a first catalyst comprising 22 to 28 milligrams palladium with active charcoal per milliliter of water and a second catalyst comprising 2 to 3 milligrams pyrogenic silica per milliliter of water, and wherein the buffer has a pH of 10 and is in an amount of 5 to 6 microliters of buffer per milliliter of water.

17. The shockwave applicator device of claim 1 , further comprising a handle coupled to at least one of the first electrode and second electrode for manual adjustment of the spark gap distance between the electrodes.

18. The shockwave applicator device of claim 1 , further comprising a display operatively coupled to the controller and providing viewable instructions for adjustment of the spark gap distance between the electrodes.

19. The shockwave applicator device of claim 1 , wherein the controller determines the spark gap distance between the electrodes by calculation of equivalent capacitance of the applicator head.

20. The shockwave applicator device of claim 1 , further comprising a stepper motor coupled to at least one of the electrodes, wherein the stepper motor is actuated by the controller to incrementally adjust the spark gap distance between the electrodes.

Assignees

• Sanuwave Inc

Inventors

• Katragadda Venkata
• Booth David
• Mcghin Cary
• Jackson John
• Johnston Richard

Classifications

• A61B17/225

  for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves · CPC title

• G10K15/043

  producing shock waves (G10K15/046, G10K15/06 take precedence; generating seismic energy G01V1/02) · CPC title

• A61H23/008 Primary

  using shock waves · CPC title