**Exhibit      21.1**

**SUBSIDIARIES      OF THE REGISTRANT**

| Subsidiary                                                     | State                or Country of Incorporation or Organization |
|----------------------------------------------------------------|------------------------------------------------------------------|
| AngioCare                Corporation                           | Delaware                                                         |
| ArthroCare                Canada, Ltd.                         | Canada                                                           |
| ArthroCare                Corporation Cayman Islands           | Cayman                Islands                                    |
| ArthroCare                Costa Rica SRL                       | Costa                Rica                                        |
| ArthroCare                Deutschland GmbH                     | Germany                                                          |
| ArthroCare                Europe AB                            | Sweden                                                           |
| ArthroCare                France SRL                           | France                                                           |
| ArthroCare,                Ltd.                                | Hong                Kong                                         |
| ArthroCare                International, Inc.                  | Delaware                                                         |
| ArthroCare                Italy SPA                            | Italy                                                            |
| ArthroCare                Luxembourg, S.a.r.l.                 | Luxembourg                                                       |
| ArthroCare                Medical Corporation                  | Nevada                                                           |
| ArthroCare                Pty, Ltd.                            | Australia                                                        |
| ArthroCare                U.K. LTD                             | United                Kingdom                                    |
| Atlantech                Medizinishche Produkte Vertreibs GmbH | Austria                                                          |
| Device                Reimbursement Services, Inc.             | Nevada                                                           |
| DiscoCare,                Inc.                                 | Delaware                                                         |
| LySonix,                Inc.                                   | Nevada                                                           |
| MDA                Capital, Inc.                               | Nevada                                                           |
| Medical                Device Alliance Inc.                    | Nevada                                                           |
| Parallax                Medical, Inc.                          | Delaware                                                         |
| OC                Acquisition Sub, LLC                         | California                                                       |

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