Graeme Clark Collection

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http://hdl.handle.net/11343/375

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1984 - 1989 1 1990 - 1996 2
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Author: Clark, Graeme × Author: Shepherd, Robert × End date: 1999 × Type: Journal Article × Subject: otolaryngology × Subject: otology ×

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Now showing 1 - 3 of 3
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    Cochlear histopatholgic characteristics following long-term implantation: safety studies in the young monkey
    Burton, Martin J. ; Shepherd, Robert K. ; Clark, Graeme M. ( 1996)
    Objective: To evaluate the safety of cochlear implantation in children 2 years of age or younger using a non-human primate model.
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    Experimental study on extracochlear electric stimulation [Abstract]
    Ni, Daofeng ; Shepherd, Robert K. ; Clark, Graeme M. ( 1992)
    The efficiency and feasibility of chronic extracochlear implantation and electric stimulation were studied in two adult cats and four 2-month kittens. The first electrode was placed on the round window by fixing the leadwire on the bridge of aditus between the middle ear and bulla cavity; the second electrode was placed on the surface of the tympanic promontory; the third was inserted into the temporal muscle out of the bulla and the forth fixed in transverse sinus with dental cement. ABRs and EABRs were recorded pre-and postoperatively and during electric stimulation.
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    Surgery for an improved multiple-channel cochlear implant
    Clark, Graeme M. ; Pyman, Brian C. ; Webb, Robert L. ; Bailey, Quentin E. ; Shepherd, Robert K. ( 1984)
    An improved multiple-channel cochlear implant has been developed. The titanium container with enclosed electronics, the receiver coil and the connector are embedded in medical-grade Silastic. The upper half of the implant has a diameter of 35 mm and a height of 4.5 mm. and the lower half a diameter of 23 mm and a height of.5 mm. The electrode array has also been designed to reduce the possibility of breakage due to repeated movements over many years. The surgery involves drilling a bed in the mastoid bone for the receiver-stimulator, and fixing the proximal electrode under the mastoid cortex. Gentle insertion of the electrode array through the round window and along the seala tympani is achieved with a specially designed microclaw.