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  • Title: Spinal canal surrogate for testing intradural implants.
    Author: Oya H, Howard MA, Shurig R, Gillies GT.
    Journal: J Med Eng Technol; 2012 Nov; 36(8):407-10. PubMed ID: 22953718.
    Abstract:
    We have designed, built and tested an anthropomorphic-scale surrogate spinal canal, for use in preliminary evaluations of the performance characteristics of a novel intradural spinal cord stimulator. The surrogate employs a silicone mock spinal cord with semi-major and semi-minor diameters of 10 and 6 mm, respectively, commensurate with those of actual thoracic-level spinal cord. The axial restoring force provided by the 300 µm thick silicone denticulate ligament constructs on the mock cord is ~ 0.32 N mm(-1) over a 1.5 mm range of displacement, which is within a factor of 2 of that measured by others in human cadaver specimens. Examples of testing protocols of prototype intradural stimulators that employ this device are discussed.
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