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Biomedical subjects

P Banfai

Publications and source records attributed to P Banfai.

15 recordsLinked to original sources
PubMed1988

Unanswered questions concerning the indication for cochlear implant.

In a discussion of the function of cochlear implant (CI), the following criteria should be mentioned: (1) If possible, all deaf persons (including the prelingually deaf and children) should benefit from CI. (2) Since the number of patients with late deafness is doubtlessly decreasing with better prevention and medical care (elimination of ototoxic damage, decrease of iatrogenic deafness), the percentage distribution of the deaf will be displaced in favor of the prelingually deaf. At present, the ratio of cases of late deafness to those of prelingual deafness among our CI candidates is 1:3. (3) The objective of CI must be to provide the advantage of the procedure to children as early as possible. This means that under certain circumstances a technique that is as low in risks as possible and with a handy implement should already have been used in patients at the age of 3 to 4 years.

Adaptation, Psychological↗
PubMed1986

Extracochlear sixteen-channel electrode system.

This article summarizes 10 years of work by the Cologne-Düren Research Group. The purpose of our research was to develop a noninvasive operation technique and to avoid opening the inner ear cavities (extracochlear technique). On the basis of empiric experience, a 16-channel electrode system was developed. The electrodes were fixed on a "hedgehog" contact plate with an arrangement corresponding to the projection of the cochlea. A microprocessor, which enables individual programmability in the different groups of deaf persons (prelingual, postlingual deafness), was integrated into the speech processor. Experience to date was summarized in statistical data. Not only the results of the psychoacoustic tests, but also the applicability of the cochlear implant as seen by the patients were considered. We next plan to miniaturize the system.

Adolescent↗
PubMed1985

Extracochlear eight-channel electrode system.

The Cologne-Düren research group has developed a new extracochlear eight-channel electrode system. The first observations on six cases have shown encouraging psychoacoustic results.

Acoustic Impedance Tests↗
PubMed1978

[A surgical approach for the cochlear implant (author's transl)].

Although the round window is most commonly employed for insertion of a cochlear electrode, manipulation through this route can be difficult. The author gives data for orientation to a new approach for placing a cochlear implant. In this manner, the nerve fibers of the N. cochlearis in the entire cochlear region can be reached and stimulated.

Cochlea↗