Title:
POLYAXIAL BONE FIXATION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2017/147372
Kind Code:
A8
Abstract:
A fastener device includes an anchor body that defines a through hole. The anchor body further includes an inner surface that defines a least a portion of the through hole. The fastener includes a head, a threaded shaft that extends out with respect to the head in a distal direction, and a neck between the head and threaded shaft. The head includes an outer surface configured to articulate along the inner surface when the fastener head is inserted in the through hole. At least a portion of the outer surface is convex and defines a portion of a sphere that defines a first diameter. The neck defines a second diameter and the fastener defines a ratio of the first diameter to the second diameter in a range between about 2 to 1 and about 3 to 1.
Inventors:
RAMSAY CHRISTOPHER (US)
DI VINCENZO JOHN (US)
DI VINCENZO JOHN (US)
Application Number:
PCT/US2017/019280
Publication Date:
March 22, 2018
Filing Date:
February 24, 2017
Export Citation:
Assignee:
MEDOS INT SARL (CH)
RAMSAY CHRISTOPHER (US)
RAMSAY CHRISTOPHER (US)
International Classes:
A61B17/70
Attorney, Agent or Firm:
SHIRTZ, Joseph, F. et al. (US)
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