Composite anesthetic article and method of use

Details Composite anesthetic article and method of use Composite anesthetic article and method of use

1991-01-02

1993-11-16

Hafer, Robert A.

Surgery

Container for blood or body treating material, or means used...

Materials mixed within container

604415, 604410, A61J 100

Patent

active

052619036

ABSTRACT:
An aqueous composition for reducing pain at the site of injection of local parenteral anesthetic material, for improving the onset thereof, and for increasing its duration, and a means for preparing and dispensing the same, the composition containing a local parenteral anesthetic which in normal doses gives an acid pH of from about 2.5 to about 6.9, wherein the anesthetic comprises from about 0.5 to about 2.0% by weight of the composition, the composition further containing sufficient NaHCO.sub.3 to maintain the pH thereof between about 7.0 and about 7.6, and further containing from about 0.0004 moles of dissolved CO.sub.2 per ml of composition up to the saturation level of dissolved CO.sub.2 at a CO.sub.2 head pressure of up to about 2.5 atmospheres.

REFERENCES:
patent: 4259956 (1981-04-01), Ogle
patent: 4591049 (1986-03-01), Walter et al.
patent: 4630727 (1986-12-01), Feriani et al.
patent: 4842598 (1989-06-01), Tran
patent: 4863454 (1989-09-01), LaBove
patent: 4911692 (1990-03-01), Martin
patent: 4950237 (1990-08-01), Henault et al.
patent: 4963367 (1990-10-01), Ecanon

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