Sinus tarsi implant
AssigneeGraham Medical Technologies, L.L.C.
InventorMichael Graham
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Abstract
A sinus tarsi implant for the purpose of stabilizing and restoring motion between the talus and calcaneus while allowing normal motion and alignment. In a preferred embodiment, the implant is composed of a titanium alloy that is a combination of a cylindrical portion and an axially connected conical portion. The cylindrical portion has a surface with multiple parallel grooves that are each parallel to the transverse axis of the cylinder. The grooves are uniquely shaped with a perpendicular medial side and an angled lateral side. The implant is cannulated to enable use of a guide wire that insures proper alignment during insertion.
Claims13
A sinus tarsi implant for use in correcting anatomical alignment of a patient's ankle bone structure comprising:
- a cylindrical body portion consisting of a cylindrical side surface, a circular medial end and a circular lateral end, said medial and lateral ends being perpendicular to an implant central axis, said cylindrical side surface comprising a plurality of continuous circumferential grooves each perpendicular to the implant central axis, and
- a conical foot portion comprising a generally conical side surface, a circular top and circular base, said top being integrally connected, along the implant central axis, with the lateral end of the body portion, said conical side surfaces flare out to form an angle, θ, wherein θ is in the range 15° to 25°
- wherein said implant is capable of insertion into a patient's ankle and corrects anatomical alignment of the patient's ankle bone structure.
Dependencies are inferred from the claim text.