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A new neuroimplantable device: The tulgar implant. Initial results of animal testing
(WILEY, 2005) Kalkan, E; Arican, M; Kalkan, SS; Erayman, I; Erol, A; Tulgar, AO; Tulgar, M
A new neuroimplant system, namely the Tulgar implant, developed to solve the practical problems encountered with the presently available implants, was tested as a spinal cord stimulator in ten sheep. The response of living tissue and technical performance of the new system were evaluated. Electrodes implanted in the low thoracic (T9-10) vertebral levels by means of hemilaminectomy were subcutaneously connected to the passive coil receiver element located in the anterior-inferior chest wall for 28 days. Laboratory parameters including hematology, biochemistry, and microbiology were investigated over the study, and histopathologic examinations were done by the end of study. Animal tests showed that the new system could reliably be implantable in the living tissue. Intra-operative radicular stimulation of the right dorsal root in T13-L1 levels, by means of burst mode of signals, resulted in observable contractions of hip muscles in the right upper leg.