Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1984-05-16
1987-03-17
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 11, 623 66, 128 1R, 128151, 604264, 604265, A61F 1100, A61F 218, A61B 1900
Patent
active
046504885
ABSTRACT:
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.
REFERENCES:
patent: 3530860 (1967-01-01), Majoros
patent: 3620218 (1971-11-01), Schmitt
patent: 3807409 (1974-04-01), Paparella
patent: 3916873 (1975-11-01), Wasserman
patent: 4168697 (1979-09-01), Cantekin
patent: 4496446 (1985-01-01), Ritter
"Experimental Myringoplasty" by L. Feenstra et al., Inter. J. of Art. Org., vol. 3, #6, 1980, pp. 354-357.
"Controlled Release Technologies: Methods, Theory, and Applications" vol. II, Agis F. Kydonieus, CRC Press.
"Poly(Lactic Acid) and Poly(Lactic Acid-Co-Glycolic Acid) Contraceptive Delivery Systems" by Lee R. Beck and Thomas R. Tice in Long-Acting Steroid Contraception; Raven Press; NY, NY; 1983; Mishell ed.
Bays F. Barry
Dunn Richard L.
Marchand Sam
Treharne, III Richard W.
Apley Richard J.
Beaurage Gregory
Richards Medical Company
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