Referenced by|
| US3968800 | 17 Sep 1974 | 13 Jul 1976 | | Device for insertion into a body opening | | US4667657 | 18 Oct 1985 | 26 May 1987 | Institut Blagoveschensky Gosudarstvenny Meditsinsky | Surgical wound retractor | | US5354250 | 8 Apr 1993 | 11 Oct 1994 | | Apparatus for training the muscles of the female pelvic diaphragm | | US8062217 | 28 Jan 2008 | 22 Nov 2011 | Theken Spine, LLC | Surgical retractor with removable blades and method of use |
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