The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2003
Filed:
Jul. 11, 2000
Lennart Carlsson, Mölndal, SE;
Matthew Yung, Ipswich, GB;
Nobel Biocare AB, Gothenburg, SE;
Abstract
The invention relates to a device for ventilating the middle ear by means of a ventilation tube which is made of a tissue-compatible material, preferably titanium, and with a through-channel for air communication between the cavity of the middle ear and the outside air. The ventilation tube comprises, on the one hand, a front portion ( ) which is arranged to be introduced into bone tissue and is designed so that a permanent anchoring is obtained in the bone tissue, and, on the other hand, a rear portion ( ) which forms a passage through the skin. The ventilation tube further comprises an outer tube ( ) which is made of the said tissue-compatible material and an inner tube ( ) which is arranged releasably in the outer tube and whose inner bore forms the said through-channel ( ) for air communication between the cavity of the middle ear and the outside air.