Hearing aid with a tightening ring
AssigneeTøpholm & Westermann APS
InventorJan Tøpholm
Life of this patent
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Abstract
The present invention relates to a hearing aid for insertion in the auditory canal, comprising a hearing aid housing and a face plate and a shell that is matched to the auditory canal of a user and has a tightening protrusion that extends along the surface of the shell and at least partly encircles the shell thereby providing a tight seal against the auditory canal wall when the shell is inserted in the auditory canal.
Claims14
A method for computer controlled production of a hearing aid housing with a face plate and a shell, comprising the steps of:
- acquiring data representing the shape of the auditory canal,
- forming in a computer and based on the data a three-dimensional model of a hearing aid shell with a shell surface matched to the shape of the auditory canal,
- modifying the three-dimensional model by increasing the outer dimensions at selected areas of the shell surface to establish a shell model with a tightening protrusion at least partly encircling the shell surface and adapted for providing a tight seal against the auditory canal wall when the shell is inserted in the auditory canal,
- performing a computer controlled production of the shell based on the shell model, and
- fitting the shell with a faceplate to provide a hearing aid housing
- wherein the position of the tightening protrusion is selected to correspond with a position in the auditory canal at which user activity caused dynamic variations of the auditory canal are small.
A hearing aid housing for insertion in the auditory canal, comprising a shell produced by way of acquiring data representing the shape of the auditory canal, forming in a computer and based on the data a three-dimensional model of a hearing aid shell with a shell surface matched to shape of the auditory canal, modifying the three-dimensional model by increasing the outer dimensions at selected areas of the shell surface to establish a shell model with a tightening protrusion at least partly encircling the shell surface, and performing a computer controlled production of the shell based on the shell model, wherein the position of the tightening protrusion corresponds to a position in the auditory canal at which user activity caused dynamic variations of the auditory canal are small.
Dependencies are inferred from the claim text.