Needle assemblies

Details Needle assemblies Needle assemblies

1997-07-31

1999-08-24

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604158, 604534, A61M 1900

Patent

active

059418532

ABSTRACT:
A spinal-epidural needle assembly has a rearwardly-extending sleeve on the epidural needle that is rotatable to a limited extent on its hub and that has a series of circumferentially-extending ribs on its outer surface. The spinal needle has a collar extending forwardly from its hub and slidable along outside of the sleeve of the epidural needle. The collar has a small elastomeric pad on its inner surface, which is slidable along a smooth region to one side of the ribbed region. The spinal needle is locked longitudinally relative to the epidural needle by twisting its collar so that the elastomeric pad slides laterally over the ribbed region with the ribs gripping into the pad.

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