pencil-point needle


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Related to pencil-point needle: Quincke needle

pencil-point needle

A needle with a tapered tip that does not damage tissue as much as a beveled needle. Pencil-point needles are commonly used in lumbar puncture to reduce leakage of cerebrospinal fluid from the subarachnoid space.
Synonym: atraumatic needle
See also: needle
References in periodicals archive ?
The presence of pain, pressure or stretch receptors in the lumbar meninges raises the possibility that dural puncture with pencil-point needles, which indent and stretch the meninges prior to perforation, and cutting-edge needles, which pierce the meninges with less indentation and stretch, may induce different sensory responses at the moment of dural puncture.