Anesthesia set

Details Anesthesia set Anesthesia set

1992-08-25

1993-05-25

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604164, 604274, A61M 5178

Patent

active

052135780

ABSTRACT:
To securely introduce the distal tip of a spinal cannula through an epidural cannula into a spinal canal, a mandrel is placed in the epidural cannula. The mandrel is provided with a recess or guideway extending over its length. The guideway is aligned with an axial opening in the epidural cannula, so that the spinal cannula, when pushed forward through the recess, is guided positively to the axial opening and can pass through it unhindered, in order to get into the spinal canal. The mandrel includes a radially offset distal portion which enters and seals a curved, offset portion of the epidural cannula to avoid coring of tissue and to snap fittedly connect the mandrel and epidural cannula.

REFERENCES:
patent: 2748769 (1956-06-01), Huber
patent: 2922420 (1960-01-01), Cheng
patent: 4958901 (1990-09-01), Coombs
patent: 5100390 (1992-03-01), Lubeck et al.
patent: 5106376 (1992-04-01), Mononen et al.
patent: 5163901 (1992-11-01), Eldor
patent: 5167645 (1992-12-01), Castillo

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