公开(公告)号：US06316158B1

公开(公告)日：2001-11-13

申请号：US09688551

申请日：2000-10-16

申请人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald DiMaio, Jr. ,  Edward George Howard, Jr.

发明人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald DiMaio, Jr. ,  Edward George Howard, Jr.

IPC分类号： G03G500

CPC分类号： A61L31/048 ,  A61L2/08 ,  A61L2/14 ,  A61L2/206 ,  A61L27/16 ,  B29C43/00 ,  B29C43/16 ,  B29C2035/085 ,  B29K2105/253 ,  B29K2995/0087 ,  B29K2995/0089 ,  B29L2031/7532 ,  Y10S522/911 ,  Y10S522/912 ,  Y10S623/92 ,  C08L23/06

摘要： A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the absence of oxygen to a temperature at or above the onset of melting temperature, and forming an implant from the stabilized cross-linked polymer. Implants prepared according to the process of the present invention have comparable oxidation resistance and superior wear performance compared to unirradiated ultrahigh molecular weight polyethylene.

公开(公告)号：US06562540B2

公开(公告)日：2003-05-13

申请号：US10056684

申请日：2001-10-29

申请人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald Dimaio, Jr. ,  Edward George Howard, Jr.

发明人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald Dimaio, Jr. ,  Edward George Howard, Jr.

IPC分类号： G03G500

CPC分类号： A61L31/048 ,  A61L2/08 ,  A61L2/14 ,  A61L2/206 ,  A61L27/16 ,  B29C43/00 ,  B29C43/16 ,  B29C2035/085 ,  B29K2105/253 ,  B29K2995/0087 ,  B29K2995/0089 ,  B29L2031/7532 ,  Y10S522/911 ,  Y10S522/912 ,  Y10S623/92 ,  C08L23/06

摘要： A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the absence of oxygen to a temperature at or above the onset of melting temperature, and forming an implant from the stabilized cross-linked polymer. Implants prepared according to the process of the present invention have comparable oxidation resistance and superior wear performance compared to unirradiated ultrahigh molecular weight polyethylene.

公开(公告)号：US06242507B1

公开(公告)日：2001-06-05

申请号：US09422722

申请日：1999-10-22

申请人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald DiMaio, Jr. ,  Edward George Howard, Jr.

发明人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald DiMaio, Jr. ,  Edward George Howard, Jr.

IPC分类号： C08J328

CPC分类号： A61L31/048 ,  A61L2/08 ,  A61L2/14 ,  A61L2/206 ,  A61L27/16 ,  B29C43/00 ,  B29C43/16 ,  B29C2035/085 ,  B29K2105/253 ,  B29K2995/0087 ,  B29K2995/0089 ,  B29L2031/7532 ,  Y10S522/911 ,  Y10S522/912 ,  Y10S623/92 ,  C08L23/06

摘要： A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the absence of oxygen to a temperature at or above the onset of melting temperature, and forming an implant from the stabilized cross-linked polymer. Implants prepared according to the process of the present invention have comparable oxidation resistance and superior wear performance compared to unirradiated ultrahigh molecular weight polyethylene.

摘要翻译： 通过照射超高分子量聚乙烯的预成型体，在不存在氧气的情况下将照射的预制件退火至熔融温度以上或更高的温度，制备具有改善的耐磨性能和抗氧化性能的改进的超高分子量聚乙烯的医用植入物 ，并从稳定的交联聚合物形成植入物。 与未照射的超高分子量聚乙烯相比，根据本发明的方法制备的植入物具有相当的耐氧化性和优异的耐磨性能。

公开(公告)号：US6017975A

公开(公告)日：2000-01-25

申请号：US911792

申请日：1997-08-15

申请人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald Dimaio, Jr. ,  Edward George Howard, Jr.

发明人： Kenneth Ashley Saum ,  William Michael Sanford ,  William Gerald Dimaio, Jr. ,  Edward George Howard, Jr.

IPC分类号： A61L27/00 ,  A61L2/08 ,  A61L2/14 ,  A61L2/20 ,  A61L27/16 ,  A61L31/04 ,  B29C35/08 ,  B29C43/00 ,  B29C43/16 ,  C08J3/28

CPC分类号： A61L31/048 ,  A61L2/08 ,  A61L2/14 ,  A61L2/206 ,  A61L27/16 ,  B29C2035/085 ,  B29C43/00 ,  B29C43/16 ,  B29K2105/253 ,  B29K2995/0087 ,  B29K2995/0089 ,  B29L2031/7532 ,  Y10S522/911 ,  Y10S522/912 ,  Y10S623/92

摘要： A medical implant of ultrahigh molecular weight polyethylene having an improved balance of wear properties and oxidation resistance is prepared by irradiating a preform of ultrahigh molecular weight polyethylene, annealing the irradiated preform in the absence of oxygen to a temperature at or above the onset of melting temperature, and forming an implant from the stabilized cross-linked polymer. Implants prepared according to the process of the present invention have comparable oxidation resistance and superior wear performance compared to unirradiated ultrahigh molecular weight polyethylene.