Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1997-05-19
1998-12-15
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, 604264, A61M 532
Patent
active
058489967
ABSTRACT:
A double-hole pencil-point (DHPP) spinal needle is composed of a closed end blunt ogival or pencil point tip and two circular coaxial holes in close proximity to the tip. Anesthetic solution may be injected through the coaxial holes in a direction parallel to the long axis of the spinal fluid column which allows an even anesthetic distribution with a low dosage required. The spinal needle of the present invention allows anesthetic solution to be injected even when one of the holes is obstructed by a tissue fragment and rapid reflux of cerebral spinal fluid at twice the rate of single hole pencil point spinal needles.
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