公开(公告)号：US4650488A

公开(公告)日：1987-03-17

申请号：US610965

申请日：1984-05-16

申请人： F. Barry Bays ,  Richard L. Dunn ,  Sam Marchand ,  Richard W. Treharne, III

发明人： F. Barry Bays ,  Richard L. Dunn ,  Sam Marchand ,  Richard W. Treharne, III

IPC分类号： A61F2/02 ,  A61F11/00 ,  A61L27/18 ,  A61L27/58 ,  A61B19/00 ,  A61F2/18

CPC分类号： A61L27/58 ,  A61F11/002 ,  A61L27/18 ,  A61F2210/0004 ,  A61L2430/14

摘要： A prosthetic device formed of a biodegradable material and useful as a ventilation tube for insertion between the middle ear and the outer ear. The device includes a shaft with an axial passage, an inner flange and an outer flange. At least a portion of the outer surface of the shaft is tapered, with the taper increasing from the inner to the outer flange. The larger diameter outer flange and any attached portion of the shaft are, therefore, forced outwardly when the tapered portion of the shaft is in contact with animal tissue biodegrades before other portions of the prosthesis.

摘要翻译： 由可生物降解的材料形成并且可用作用于插入中耳和外耳之间的通气管的假体装置。 该装置包括具有轴向通道的轴，内凸缘和外凸缘。 轴的外表面的至少一部分是锥形的，锥形从内凸缘增加到外凸缘。 因此，当轴的锥形部分在假体的其他部分之前与动物组织生物降解接触时，较大直径的外凸缘和轴的任何附接部分被迫向外。