Adjustable prosthetic device for vocal cord and method

Details Adjustable prosthetic device for vocal cord and method Adjustable prosthetic device for vocal cord and method

1991-10-15

1993-03-30

Green, Randall L.

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

Larynx, trachea, tracheobronchial prosthesis or combination...

623 12, 623 26, 606196, A61F 220, A61F 204

Patent

active

051979829

ABSTRACT:
An adjustable prosthetic device for a vocal cord includes an actuator member for locating a paralyzed vocal cord in a predetermined phonation position. The device further includes a support member for supporting the actuator member in a predetermined position proximate the paralyzed vocal cord. A fluid input/withdrawal station for introducing or removing fluid from engagement with the actuator member enables the actuator member to change the location of the paralyzed vocal cord from a first predetermined phonation position to another selected position. In several embodiements of the invention the actuator member is a fluid expandable shell. In other embodiments of the invention the actuator member is a piston-expandable bellows and a movable ratchet member. The support member that supports the actuator member can be hung onto a thyroid cartilage or passed through the thyroid cartilage. The fluid input/withdrawal station can be provided adjacent the thyroid cartilage or loacted remote from the thyroid cartilage. In all embodiments of the invention the actuator member can be adjusted postoperatively without need for further surgery.

REFERENCES:
patent: 3818894 (1974-06-01), Wichterle et al.
patent: 4198542 (1980-04-01), Ducommun
patent: 4731083 (1988-03-01), Fischell
patent: 4822333 (1989-04-01), Lavarenne
patent: 4932975 (1990-06-01), Main et al.

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