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US 5,997,580 AGranted
Cement restrictor including shape memory material
AssigneeJohnson & Johnson Professional, Inc.
InventorsBrooke W. Mastrorio, Pierre S. Ostiguy
Life of this patent
Estimating the term…
Abstract
A cement restrictor is provided for creating a fixed obstruction within a bone. An exemplary cement restrictor includes a member or body that is expandable or transitionable from a first diameter to a second diameter.
Claims7
A cement restrictor for creating a cement restriction within a bone, said cement restrictor comprising:
- a fluid impermeable configurable structure having a first configuration that has a first diameter with respect to a selected axis and a second configuration that has a second diameter with respect to the selected axis, the second diameter being greater than the first diameter,
- said structure for being inserted into an opening of said bone in said first configuration
- wherein the structure in the second configuration frictionally engages said bone opening to form a fluid impermeable barrier within said bone opening, and
- wherein the configurable structure includes shape memory material for transitioning the configurable structure to the second configuration.
1 more element
A cement restrictor for creating a cement restriction within a bone, said cement restrictor comprising:
- a fluid impermeable configurable structure including shape memory material, the configurable structure having a first configuration that has a first diameter with respect to a selected axis and a second configuration that has a second diameter with respect to the selected axis, the second diameter being greater than the first diameter,
- said structure for being inserted into an opening of said bone in said first configuration,
- wherein the structure in the second configuration frictionally engages said bone opening to form a fluid impermeable barrier within said bone opening, and
- wherein the configurable structure has a first end along a longitudinal axis and a second end opposite the first end, and wherein heating the shape memory material causes the second end to have a greater diameter than the first end.
1 more element
A cement restrictor for creating a cement restriction within a bone, said cement restrictor comprising:
- a fluid impermeable configurable structure including shape memory material, the configurable structure having a first configuration that has a first diameter with respect to a selected axis and a second configuration that has a second diameter with respect to the selected axis, the second diameter being greater than the first diameter,
- said structure for being inserted into an opening of said bone in said first configuration,
- wherein the structure in the second configuration frictionally engages said bone opening to form a fluid impermeable barrier within said bone opening, and
- wherein the configurable structure has a first end along a longitudinal axis and a second end opposite the first end, and wherein cooling the shape memory material causes the second end to have a greater diameter than the first end.
1 more element
Dependencies are inferred from the claim text.