Highly crystalline polyethylene
AssigneeThe General Hospital Corporation
InventorsOrhun K. Muratoglu, Ebru Oral
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Abstract
The present invention relates to methods for making highly crystalline polymeric material, for example, highly crystalline cross-linked and not cross-linked ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making additive-doped highly crystalline polymeric material using high pressure and high temperature crystallization processes, medical implants made thereof, and materials used therein.
Claims27
1-54. (canceled)
A medical device or implant comprising an oxidation-resistant cross-linked interlocked hybrid material produced by a process comprising the steps of:
- (a) blending a polymeric material with one or more additives, thereby forming a polymeric blend;
- (b) compression molding of the polymeric blend to a counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material;
- (c) irradiating the interlocked hybrid material with ionizing radiation at a temperature that is between about 80° C. and below the melting point of the polymeric blend, thereby forming an oxidation-resistant cross-linked interlocked hybrid material;
- and
- (d) machining the cross-linked interlocked hybrid material, thereby forming the medical device or implant.
A method of making a medical device or implant comprising an oxidation-resistant cross-linked interlocked hybrid material comprising:
- (a) blending a polymeric material with one or more additives, thereby forming a polymeric blend;
- (b) compression molding of the polymeric blend to a counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material;
- (c) irradiating the interlocked hybrid material with ionizing radiation at a temperature that is between about 80° C. and below the melting point of the polymeric blend, thereby forming an oxidation-resistant cross-linked interlocked hybrid material;
- and
- (d) machining the cross-linked and interlocked hybrid material, thereby forming the medical device or implant.
An oxidation-resistant cross-linked interlocked hybrid material for a medical device or implant, wherein the material is produced by a process comprising the steps of:
- (a) blending a polymeric material with one or more additives, thereby forming a polymeric blend;
- (b) compression molding of the polymeric blend to a counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material;
- and
- (c) irradiating the interlocked hybrid material with ionizing radiation at a temperature that is between about 80° C. and below the melting point of the polymeric blend, thereby forming the oxidation-resistant cross-linked interlocked hybrid material.
A medical device or implant comprising an oxidation-resistant cross-linked interlocked hybrid material produced by a process comprising the steps of:
- (a) blending a polymeric material with one or more additives, thereby forming a polymeric blend;
- (b) compression molding of the polymeric blend to a counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material;
- (c) irradiating the interlocked hybrid material with ionizing radiation at a temperature that is between above room temperature and about 80° C., thereby forming an oxidation-resistant cross-linked interlocked hybrid material;
- and
- (d) machining the cross-linked interlocked hybrid material, thereby forming the medical device or implant.
A method of making a medical device or implant comprising an oxidation-resistant cross-linked interlocked hybrid material comprising:
- (a) blending a polymeric material with one or more additives, thereby forming a polymeric blend;
- (b) compression molding of the polymeric blend to a counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material;
- (c) irradiating the interlocked hybrid material with ionizing radiation at a temperature that is between above room temperature and about 80° C., thereby forming an oxidation-resistant cross-linked interlocked hybrid material;
- and
- (d) machining the cross-linked and interlocked hybrid material, thereby forming the medical device or implant.
An oxidation-resistant cross-linked interlocked hybrid material for a medical device or implant, wherein the material is produced by a process comprising the steps of:
- (a) blending a polymeric material with one or more additives, thereby forming a polymeric blend;
- (b) compression molding of the polymeric blend to a counterface of second material, thereby forming an interlocked hybrid material having an interface between the polymeric blend and the second material;
- and
- (c) irradiating the interlocked hybrid material with ionizing radiation at a temperature that is between above room temperature and about 80° C., thereby forming the oxidation-resistant cross-linked interlocked hybrid material.
Dependencies are inferred from the claim text.