The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1998
Filed:
Jun. 06, 1997
Stephen J Incavo, South Burlington, VT (US);
John F Dirmaier, South Burlington, VT (US);
Other;
Abstract
An apparatus and method for removing a previously implanted component is disclosed. Generally, the novel device will be used in artificial hip revision surgery. The device comprises a stem, a handle member adapted on the first end of the stem, and a hemispherical cutting blade mounted on the second end of the stem. The hemispherical cutting blade is adapted for cutting an acetabular component from the patient. In the preferred embodiment, the hemispherical cutting blade comprises a first-half hemispherical blade and a second-half hemispherical blade. The blades are interchangeable so that different size acetabular components may be removed via the procedure herein described. The device also includes a contact point member configured on the second end of the stem member, with the contact point member adapted to contact the concave surface of the acetabular component. The apparatus may further include an advancing member, operatively associated with the stem, for advancing the first-half hemispherical blade and said second-half hemispherical blade about said acetabular component. In one embodiment, the advancing member comprises a collar slidably received about the stem. The collar is movable relative to the stem so that as the collar is advanced, the hemispherical blades pivot about the acetabular component. A method of removing an acetabular component in a total hip replacement revision surgery with the hand tool is also disclosed.