High temperature melting
AssigneeThe General Hospital Corporation
InventorsEbru ORAL, Orhun K. MURATOGLU
Life of this patent
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Abstract
The present invention relates to methods for making wear and oxidation resistant polymeric materials by high temperature melting. The invention also provides methods of making medical implants containing cross-linked antioxidant-containing tough and ductile polymers and materials used therewith also are provided.
Claims32
-12. (canceled)
A method of making a layered consolidated UHMWPE for use as a medical implant, wherein the method comprises the steps of:
- blending ultrahigh molecular weight polyethylene (UHMWPE) powder, flakes or particles with at least one additive in a solvent to provide a UHMWPE blend;
- drying the UHMWPE blend from the blending step;
- consolidating as layers the UHMWPE blend from drying step with a second UHMWPE to yield layered consolidated UHMWPE comprising the additive in at least one layer, and
- machining the layered consolidated UHMWPE, wherein the additive is a pharmaceutical compound.
A method of making a layered consolidated UHMWPE for use as a medical implant, wherein the method comprises the steps of:
- blending ultrahigh molecular weight polyethylene (UHMWPE) powder, flakes or particles with at least one additive in a solvent to provide a UHMWPE blend;
- drying the UHMWPE blend from the blending step;
- consolidating as layers the UHMWPE blend with a second UHMWPE to yield layered consolidated UHMWPE comprising the additive in at least one layer;
- and
- machining the layered consolidated UHMWPE,
- wherein the additive is a pharmaceutical compound.
A layered consolidated UHMWPE for use as a medical implant, wherein the layered consolidated UHMWPE is made by a method comprising the steps of
- blending ultrahigh molecular weight polyethylene (UHMWPE) powder, flakes or particles with at least one additive in a solvent to provide a UHMWPE blend;
- consolidating as layers the UHMWPE blend with a second UHMWPE to yield layered consolidated UHMWPE comprising the additive in at least one layer;
- and
- machining the layered consolidated UHMWPE,
- wherein the additive is a pharmaceutical compound.
A method of making a layered consolidated UHMWPE for use as a medical implant, wherein the method comprises the steps of:
- blending ultrahigh molecular weight polyethylene (UHMWPE) powder, flakes or particles with one additive in a solvent to provide a first UHMWPE blend;
- blending ultrahigh molecular weight polyethylene (UHMWPE) powder, flakes or particles with one additive in a solvent to provide a second UHMWPE blend;
- blending the first and second UHMWPE blends to provide a third blend;
- drying the third UHMWPE blend;
- consolidating as layers the UHMWPE blend from drying step with a second UHMWPE to yield layered consolidated UHMWPE comprising the additive in at least one layer, and
- machining the layered consolidated UHMWPE, wherein the additive is a pharmaceutical compound.
Dependencies are inferred from the claim text.