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US 7,985,255 B2Granted
Implant subsidence control
AssigneeRSB Spine LLC
InventorsRobert S. Bray, James M. Moran, Mark T. Whiteaker
Life of this patent
Estimating the term…
Abstract
An interbody device for the fixation and support of adjacent bone bodies includes a body for implantation at a location between the two vertebrae and one or more protrusions extending from the body. The protrusion(s) are configured for engagement with one of the vertebrae upon implantation and for progressive penetration into the vertebra over a period of time subsequent to the implantation.
Claims98
An interbody device comprising:
- a base member having a plurality of interface members extending from a portion of the base member, the interface members configured to provide controlled subsidence of the interbody device into a bone body over a period of time subsequent to implantation adjacent to the bone body;
- a plurality of bone fasteners extending through apertures provided in the base member;
- and
- restraining means for restricting movement of at least one of the plurality of bone fasteners;
- wherein the apertures provided in the base member includes an elongated slot configured to receive a bone fastener therethrough, the plurality of interface members have a dimensional extension adapted to penetrate into the bone body during the controlled subsidence, and the slot having an elongation dimension along which the bone fastener extending therethrough moves as a whole along the elongate dimension during the controlled subsidence.
2 more elements
An interbody device comprising:
- a base member configured for insertion between two adjacent bone bodies;
- controlled subsidence means extending from the base member, the controlled subsidence means configured to provide controlled penetration of the base member into at least one of the bone bodies over a period of time subsequent to the insertion between the bone bodies;
- and
- means for fastening the base member to the two adjacent bone bodies;
- wherein the means for fastening and the controlled subsidence means includes a bone screw located in an elongate slot through the base member and moving along the elongation of the slot during the subsidence.
2 more elements
An interbody device comprising:
- a base member configured for insertion between two adjacent bone bodies, the base member comprising:
- a plurality of interface members extending from a surface of the base member, the plurality of interface members configured to provide a controlled penetration of the base member into at least one surface of at least one of the body bodies over a period of time subsequent to the insertion between the two bone bodies;
- at least one angled hole extending therethrough for receiving a bone fastener;
- and
- at least one elongated slot extending therethrough for receiving a bone fastener, the elongated slot configured to permit the corresponding bone fastener to slide within the slot, the at least one elongated slot being of a different configuration from the at least one angled hole.
2 more elements
A device for fixation and support of bone bodies comprising:
- a body configured to interface with two or more bone bodies and having an elongate slot;
- and
- at least one interface member extending from the body;
- at least one fastener extending lengthwise transversely through the elongate slot;
- wherein the at least one interface member and the at least one fastener are configured to provide a controlled subsidence of the body into at least one of the two or more bone bodies over a period of time subsequent to implantation between the bone bodies, including relative sliding movement between the at least one fastener and the body such that the at least one fastener moves transverse to a direction of its length along the elongation of the elongate slot.
2 more elements
A device for fixation and support of bone bodies comprising:
- means for interfacing between two or more bone bodies;
- and
- means for providing a controlled subsidence of the device into at least one of the two or more bone bodies in accordance with a desired subsidence profile over a period of time subsequent to the implantation the two bone bodies;
- wherein the means for providing a controlled subsidence and the means for interfacing include a bone screw located in an elongate slot for retaining the device to one of the bone bodies and an interface member for penetration into one of the bone bodies, the elongate slot having an end and a desired subsidence profile ends when the interference member is at a maximum penetration and the bone screw is at the end of the slot.
1 more element
A device for securing two adjacent spinal vertebrae, the device comprising:
- a body for implantation at a location between the two vertebrae, an aperture provided in the body;
- at least one protrusion extending from the body for engagement with one of the vertebrae upon implantation and for progressive penetration into the vertebra over a period of time subsequent to the implantation;
- and
- at least one bone fastener extending through the aperture in the body and the body and the at least one bone fastener configured for relative sliding movement between the at least one bone fastener and the body during the controlled subsidence, the sliding is non-pivoting movement.
1 more element
An interbody device for securing two adjacent bone members, the device comprising:
- a base member for implantation at a location between the two bone members;
- and
- means for maintaining the base member within the implant location between the bone members;
- wherein the means for maintaining includes at least one bone fastener extending through an elongate aperture provided in the base member for securing into one of the bone members at a point outside of the location between the two bone members, the base member includes at least one protrusion for engagement with one of the bone members upon implantation and for progressive penetration over a period of time subsequent to the implantation, relative sliding movement occurs between the at least one bone fastener and the base member during the progressive penetration, the relative sliding includes the at least one bone fastener and the point of the securing of the at least one bone fastener relative to the elongate aperture.
1 more element
Dependencies are inferred from the claim text.