Graeme Clark Collection

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1987 - 1989 1 1990 - 1995 2
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Author: PYMAN, BRIAN × End date: 1999 × Type: Journal Article × Subject: cochlear implant × Subject: otology ×

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Now showing 1 - 3 of 3
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    Chronic middle ear disease and cochlear implantation
    Donnelly, M. J. ; Pyman, B. C. ; Clark, Graeme M. ( 1995)
    Profound or total hearing loss can occur in the setting of chronic suppurative otitis media (CSOM), either coincidentally or secondary to the disease process. Obviously, inserting a foreign body through a potentially infected field into a space that communicates intracranially presents a challenging management problem. This paper presents the experience from the Melbourne Cochlear Implant Clinic (CIC) in implanting patients with bilateral CSOM. This is certainly not a common problem, as there have been only 3 cases from 121 implanted adults. However, we feel that it is an important issue with potentially devastating consequences. In addition, there are many countries in which bilateral CSOM is a more common problem and cause of profound or total hearing loss.
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    Surgical considerations for the placement of the new Cochlear Pty Limited micro-multiple-channel cochlear implant for research studies
    Clark, Graeme M. ; Pyman, B. C. ; Webb, R. L. ( 1995)
    A new micro-receiver-stimulator for research studies on very young children as well as adults has been developed by Cochlear Pty Limited. The dimensions of the device are length 58 mm and width at front 18 mm. The width starts to increase 19 mm from the front, and the back section, which has the receiver coil and magnet, has a maximum diameter of 33 mm. The depth or thickness of the front portion of the electronic package is 5.7mm, and the remainder of the package 4.0 mm. The antenna section is 3.5 mm thick. The other dimensions of the front section of the electronic package are length 9.5 mm and width 13.7 mm. There is an angle of 160° between the titanium electronic package and the receiver coil. The dimensions of the receiver-stimulator were arrived at after anatomic studies on the temporal bones of children ranging in age from 2 to 11 months.
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    Preliminary results for the Cochlear Corporation multielectrode intracochlear implant in six prelingually deaf patients
    Clark, Graeme M. ; Busby, Peter A. ; Roberts, Susan A. ; Dowell, Richard C. ; Blamey, Peter J. ; Mecklenburg, Dianne J. ; Webb, Robert L. ; Pyman, Brian C. ; Franz, Burkhard K. ( 1987)
    The preliminary results from this study indicate that some prelingually deaf patients may get worthwhile help from a multiple-electrode cochlear implant that uses a formant-based speech processing strategy. It is encouraging that these improvements can occur in young adults and teenagers. The results for two children are also encouraging. A 10-year-old child obtained significant improvement on some speech perception tests. It was easy to set thresholds and comfortable listening levels on a 5-year-old child, and he is now a regular user of the device. There are, however, considerable variations in performance among the prelingual patients, which may be related to the following factors: whether they have had some hearing after birth, the method of education used, the motivation of the patient, and age at implantation.