| 摘要 |
A nerve testing device is a pen-like implement with a barrel (1) and a body (2) that telescopes into its rear end and is releasably retained thereby. A filament (13) is fitted to the forward end of the body (2) and can project by varying amounts through a narrow passage (14) at the forward end of the barrel (1). Nerve sensitivity is tested by end-on application of the filament (13) which buckles more easily the more it projects. The body (2) can also carry a supplementary nerve testing element (24) in a socket (18) at its rear end. A tip (25, 27) projects and is pushed back against a spring (19) in the socket (18). The element (24) may be reversible, with two different tips (25, 27), and when not in use may be housed in the part of the body (2) that telescopes into the barrel (1).
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