Device for generation of different pressure waves by means of variable reflector areas

• US 20050038362A1
• Filed: 01/12/2004
• Published: 02/17/2005
• Est. Priority Date: 01/17/2003
• Status: Abandoned Application

• Current Assignee: General Patent, LLC (Tissue Regeneration Technologies LLC)
• Original Assignee: SWS Shock Wave Systems AG
• Inventors: Schultheiss, Reiner
• Application Number:
  US10/754,586
• Publication Number:
  US 20050038362A1
• Time in Patent Office: Days
• US Class Current: 601/4
• CPC Class Codes: A61B 17/22004 using mechanical vibrations, e.g. ultrasonic shock waves A61B17/225 takes precedence
• CPC Class Codes: A61B 17/225 for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves
• CPC Class Codes: A61B 2017/22027 Features of transducers
• CPC Class Codes: A61B 2017/22028 arrays, e.g. phased arrays
• CPC Class Codes: G10K 15/04 Sound-producing devices G10K15/02 takes precedence

Abstract

The invention relates to an apparatus for the generation of shockwaves, consisting of a pressure pulse source (7), at least one reflector element (2, 3, 102, 103, 104), a shockwave permeable diaphragm (8) and a shockwave conducting medium and enables the generation of different shockwave profiles in the treatment area without extensive modification or remounting.

For this purpose the apparatus is equipped with an adjustment mechanism for changing the size of the reflection surface (5) located within the radiation path of the primary pressure pulse.

Claims

1. (Cancelled)

18. An apparatus for generating shockwaves comprising:

a pressure pulse source for generating a primary pressure pulse, said primary pressure pulse having a radiation path;

at least one reflector element;

a radiation path reflection surface being located in said radiation path, wherein said radiation path reflection surface can have at least a first and a second size;

a shockwave permeable diaphragm;

a shockwave conducting medium; and

an adjustment mechanism for changing said radiation path reflection surface from said first size to said second size.

2. The apparatus of claim 18, wherein the pressure pulse source and the reflection surface are located in a housing which is sealed on one side with the pressure pulse permeable diaphragm.

3. The apparatus of claim 2, wherein the pressure pulse source and/or at least one reflector element and/or parts thereof and/or the diaphragm surface are movable in relation to the housing.

4. The apparatus of claim 18, wherein the apparatus comprises at least two reflector elements, of which at least one is movable relative to the other and/or relative to the pressure pulse source and/or relative to the diaphragm.

5. The apparatus of claim 19,

wherein each of the reflector elements has at least one inner surface, wherein each of said inner surfaces has a reflection surface that is rotationally symmetrical relative to an exit axis and that at least one of said reflector elements is movable in an axial direction alone the exit axis.

6. The apparatus of claim 20, wherein

the inner surfaces of the reflector elements can be connected to a rotationally symmetric reflection surface relative to the exit axis;

and,

part of the reflector elements can turn on bearings, so that the reflector elements belonging to this part are hinged for moving into and out of the radiation path of the pressure pulse.

7. The apparatus of claim 20, wherein

the inner surfaces of the reflector elements can be connected to a rotationally symmetric reflection surface relative to the exit axis and at least one of the reflector elements can rotate on the exit axis, so that said at least one reflector element can be moved parallel to at least one other reflector element, which remains stationary.

8. The apparatus of claim 5, wherein the movement of the movable reflector elements can be achieved manually, electrically, hydraulically or pneumatically.

9. The apparatus of claim 19, wherein the reflector elements making up the radiation path reflection surface have different reflection coefficients.

10. The apparatus of claim 9, wherein the reflector elements have different wall thicknesses.

11. The apparatus of claim 9, wherein the reflector elements have different surface roughnesses.

12. The apparatus of claim 9, wherein wherein the reflector elements are made of different materials.

13. The apparatus of claim 19, wherein the reflector elements connect to form one radiation path reflection surface, which focuses the shockwaves on a focal volume element located outside of the apparatus.

14. The apparatus of claim 13, wherein a measuring means is attached to the apparatus that indicates where the focal volume element is located.

15. The apparatus of claim 19, wherein means are attached to the apparatus that indicate the position of the reflector elements.

16. The apparatus of claim 19, wherein means are attached to the apparatus that determine the position of the reflector elements.

17. The apparatus of claim 16, wherein the measured values are recorded by a control or analysis unit.

19. The apparatus of claim 18, wherein said apparatus has at least two reflector elements.

20. The apparatus of claim 19, wherein each of the reflector elements has at least one inner surface, wherein each of said inner surfaces has a reflection surface that is rotationally symmetrical relative to an exit axis.

21. A method for generating a changeable shockwave profile in a treatment area comprising:

generating a primary pressure pulse having a radiation path;

providing a reflection surface in said radiation path, wherein said reflection surface can have at least a first and a second size; and

,

adjusting said reflection surface from said first size to said second size to change the shockwave profile in said treatment area.