Neurological pin
OwnerBarry L. Jacobsinventor
Life of this patent
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Abstract
A neurological pin includes a shaft with a sharp end and a blunt end. The sharp end is surrounded by an element defining an annular surface traversing the axis of the shaft. The blunt end is normally defined by a spherical body and typically, the diameter of the sphere will be substantially equal to that of the annular surface. The element defining the annular surface is frustro-conical, tapering towards the blunt end. The provision of the annular surface at the sharp end of the shaft substantially eliminates the risk of piercing a patient's skin during normal use, while facilitating the application of consistent pressure on the skin.
Claims17
A neurological pin comprising a shaft with a sharp end and a blunt end, both for testing objective sensation, wherein the sharp end is surrounded by an element defining an annular surface traversing the axis of the shaft, which element is fixed relative to the shaft and determines the extent to which the sharp end can impress the skin of a patient under a given force.
A neurological pin comprising a shaft with a sharp end and a blunt end, both for testing objective sensation, wherein the sharp end is surrounded by an element defining an annular surface traversing the axis of the shaft which element is formed integral with the shaft and determines the extent to which the sharp end can impress the skin of a patient under a given force.
A neurological pin moulded in a plastics material and comprising a shaft sharp at one end and having a sphere at the other end, with a conical element fixed on the shaft adjacent the sharp end, the element being disposed symmetrically on the shaft and tapering towards said other end and thereof whereby the base of the conical element defines an annular surface traversing the axis of the shaft, the base determining the extent to which the sharp end can impress the skin of a patient under a given force.
Dependencies are inferred from the claim text.