公开(公告)号：EP0779939A1

公开(公告)日：1997-06-25

申请号：EP95931006.0

申请日：1995-08-30

申请人： MEDTRONIC CARBON IMPLANTS, INC.

发明人： ELY, John, L. ,  HAUBOLD, Axel, D. ,  EMKEN, Michael, R. ,  ACCUNTIUS, James, A.

IPC分类号： A61L27 ,  C23C16 ,  A61F2

CPC分类号： C23C16/26 ,  A61F2310/00574 ,  A61L27/303 ,  C23C16/442 ,  Y10T428/2991 ,  Y10T428/30

摘要： Pure unalloyed pyrocarbons having wear resistance suitable for use in pyrocarbon-coated heart valve components and having mechanical properties, such as flexural strength and toughness, superior to commercial silicon-alloyed pyrocarbons are deposited in fluidized bed coaters. Coating conditions are carefully controlled so as to maintain a precise bed size within a defined coating enclosure which will assure a substantially constant surface deposition temperature that in turn assures deposition of homogenous unalloyed pyrocarbons having these improved mechanical properties.

公开(公告)号：EP0779939B1

公开(公告)日：1999-06-09

申请号：EP95931006.1

申请日：1995-08-30

申请人： MEDTRONIC CARBON IMPLANTS, INC.

发明人： ELY, John, L. ,  HAUBOLD, Axel, D. ,  EMKEN, Michael, R. ,  ACCUNTIUS, James, A.

IPC分类号： C23C16/26 ,  A61L27/00 ,  B01J8/24

CPC分类号： C23C16/26 ,  A61F2310/00574 ,  A61L27/303 ,  C23C16/442 ,  Y10T428/2991 ,  Y10T428/30

摘要： Pure unalloyed pyrocarbons having wear resistance suitable for use in pyrocarbon-coated heart valve components and having mechanical properties, such as flexural strength and toughness, superior to commercial silicon-alloyed pyrocarbons are deposited in fluidized bed coaters. Coating conditions are carefully controlled so as to maintain a precise bed size within a defined coating enclosure which will assure a substantially constant surface deposition temperature that in turn assures deposition of homogenous unalloyed pyrocarbons having these improved mechanical properties.