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US 7,235,079 B2Granted
Composite bone fasteners
AssigneeAcumed LLC
InventorsDavid G. Jensen, Randall J. Huebner
Life of this patent
Estimating the term…
Abstract
Systems, including apparatus, methods, and kits, with composite bone fasteners for fixing bones. The composite bone fasteners include an inner member or core for engagement with a driver and a bioresorbable outer member or sheath for threaded engagement with bone.
Claims21
A fastener for placement into bone, comprising:
- an inner member including a shank having an external thread, the inner member also including a driver engagement structure configured to transmit torque to the fastener from a driver, the inner member having a volume;
- and
- an outer member including a shank having an external thread, the shank of the outer member being disposed around and contacting the shank of the inner member, the outer member being at least substantially bioresorbable and having a volume that is at least about one-half the volume of the inner member,
- wherein the outer member is disposed fixedly on the inner member during fabrication of the fastener such that the outer member does not turn relative to the inner member.
1 more element
A method of fixing a bone, comprising:
- selecting a fastener having an inner member and an outer member disposed around and contacting the inner member
- advancing the outer member into threaded engagement with the bone by rotation of the inner member using a driver engaged with the inner member;
- leaving the fastener in the bone until the outer member is at least partially resorbed;
- and
- unthreading the inner member selectively from the bone after the step of leaving so that the inner member is removed from the bone.
2 more elements
Dependencies are inferred from the claim text.