Composition and method of transmitting ultrasonic and...

Details Composition and method of transmitting ultrasonic and... Composition and method of transmitting ultrasonic and...

2005-09-28

2011-12-13

Kwon, Brian-Yong (Department: 1613)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Matrices

C252S500000, C252S518100

Reexamination Certificate

active

08075915

ABSTRACT:
The present invention provides a physiologically compatible conductive agent comprising (a) a long chain water-soluble ionic polymeric thickening agent selected from the group consisting of a copolymer of methyl vinyl ether and maleic anhydride, carboxy polymethylene polymer, and mixtures thereof, present in an amount from about 0.05 wt. % to about 10 wt. %; (b) an unbranched or branched alcohol having from 1 to about 4 carbon atoms present in an amount up to about 70 wt. %; and (c) the balance water. The present invention also provides a physiologically compatible conductive agent comprising long chain water-soluble ionic polymeric thickening agent selected from the group consisting of a copolymer of methyl vinyl ether and maleic anhydride, carboxy polymethylene polymer, and mixtures thereof, present in an amount from about 0.05 wt. % to about 10 wt. %; (b) a surface tension reducing amount of a surfactant; and (c) the balance water. The present invention further provides methods for transmitting electrical or ultrasonic impulses to a surface in contact with a transducer with a conductivity gap by applying to the conductivity gap the novel physiologically compatible conductive agents. The present invention also provides methods for preparing the physiologically compatible conductive agents of the present invention.

REFERENCES:
patent: 4002221 (1977-01-01), Buchalter
patent: 4693711 (1987-09-01), Bremer et al.
patent: 5954675 (1999-09-01), Dellagatta

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