Coiled wire prosthesis for complete or partial ossicular reconst

Details Coiled wire prosthesis for complete or partial ossicular reconst Coiled wire prosthesis for complete or partial ossicular reconst

1984-03-15

1986-11-25

Apley, Richard J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Ear or nose prosthesis

128 1R, A61F 218

Patent

active

046246720

ABSTRACT:
A stainless steel wire prosthesis C and P is provided for reconstruction of sound conducting mechanism in the middle ear. The prosthesis C and P is able to compensate for outward retraction and shift of the tympanic membrane occurring during the healing process and which is able to supress loud noise from damaging the inner ear. To accomplish this the prosthesis C and P has a spring coil (10) located between a pair of arms (14) and (16) at angular separation oriented to be aligned with the tympanic membrane and the oval window or stapes respectively. Because of this the spring coil has a non-linear spring constant and thus maintains a substantially constant tension pressure through the stapes footplate of the inner ear even with orientation changes between the tympanic membrane and the footplate. The spring coil (10) also acts as a shock absorber for any external trauma on the tympanic membrane.

REFERENCES:
patent: 3710399 (1973-01-01), Hurst
patent: 3913587 (1975-10-01), Newash
patent: 4041931 (1977-08-01), Elliott et al.

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