Combined spinal epidural needle set

Details Combined spinal epidural needle set Combined spinal epidural needle set

1997-04-18

1999-02-16

Coggins, Wynn Wood

Surgery

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

Treating material introduced into or removed from body...

604164, 604272, A61M 5178

Patent

active

058714707

ABSTRACT:
A combined spinal epidural needle set of the present invention includes an epidural needle with an overall length, an open distal end and a proximal end with a hub. The epidural needle has a hollow bore therethrough having an inside diameter. The set of the invention includes a spinal needle with an overall length greater than the length of the epidural needle, a pointed distal end, a proximal end with a hub and a hollow passage therethrough. The spinal needle has an outside diameter less than the inside diameter of the bore of the epidural needle. The spinal needle is slidably disposed for movement within the epidural needle between a position wherein the distal point of the spinal needle is substantially coincident with the open distal end of the epidural needle and at least one position wherein the distal point of the spinal needle projects beyond the open distal end of the epidural needle. The hubs of the epidural needle and the spinal needle each include an adjustable engagement for preselecting the position of the distal point of the spinal needle with respect to the open distal end of the epidural needle.

REFERENCES:
patent: 5085631 (1992-02-01), Leighton
patent: 5480389 (1996-01-01), McWha et al.
patent: 5527290 (1996-06-01), Zadini et al.
patent: 5573519 (1996-11-01), Zohmann
patent: 5584820 (1996-12-01), Gurmarnik

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