# US 10,478,202 B2 · Shock wave valvuloplasty device with moveable shock wave generator

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- Number: US 10,478,202 B2
- Document ID: US10478202B2
- Status: Granted
- Kind: B2
- Application number: 15/729,238
- Filed: 2017-10-10
- Published: 2018-02-01
- Granted: 2019-11-19
- Earliest claimed: 2011-11-08
- Assignees: Shockwave Medical, Inc.
- Applicants: Shockwave Medical, Inc.
- Inventors: John M. Adams; Thomas G. Goff
- Web page: https://patentgrep.com/patent/US10478202B2

## CPC

- A61B 17/22012: {in direct contact with, or very close to, the obstruction or concrement (for removing obstructions in blood vessels by laser A61B18/245)}
- A61B 17/22022: {using electric discharge}
- A61B 2017/22024: {with a part reflecting mechanical vibrations, e.g. for focusing}
- A61B 2017/22025: {applying a shock wave (A61B2017/22091 takes precedence)}
- A61B 2017/22062: {to be filled with liquid}
- A61B 2017/22098: {Decalcification of valves}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A valvuloplasty system comprises a balloon adapted to be placed adjacent leaflets of a valve. The balloon is inflatable with a liquid. The system further includes a shock wave generator within the balloon that produces shock waves that propagate through the liquid for impinging upon the valve. The shock wave generator is moveable within the balloon to vary shock wave impingement on the valve.

## Claims

### Claim 1

A device for softening and/or breaking tissue calcifications comprising:
an elongate tube;
a chamber located at the distal end of the elongate tube, said chamber having a longitudinal axis and being fillable with a liquid; and
a shock wave generator within the chamber, wherein the shock wave generator is arranged to produce a shock wave within the chamber to propagate through the liquid for impinging upon the calcified tissue, and wherein the shock wave generator is carried by an elongate element that is slidably received within the chamber such that the shock wave generator is configured to move from a first location within the chamber to a second location within the chamber that is displaced along the longitudinal axis from the first location.

### Claim 2 (depends on 1)

The device of claim 1, wherein the shock wave generator includes at least one electrode.

### Claim 3 (depends on 1)

The device of claim 1, wherein the shock wave generator is further configured to move along an arcuate path within the chamber from the first location to the second location.

### Claim 4 (depends on 3)

The device of claim 3 wherein the elongate element is rotatable within the chamber.