Stable microbubbles suspensions injectable into living organisms
First Claim
1. A composition suitable for injection into the bloodstream and body cavities of living beings, comprising a suspension of stabilized air or gas microbubbles in a physiologically acceptable aqueous carrier phase having from about 0.01 to about 20% by weight of one or more dissolved or dispersed surfactants, at least one of said surfactants being a film forming surfactant present in the composition at least partially in lamellar or laminar form.
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Accused Products
Abstract
Gas or air filled microbubble suspensions in aqueous phases usable as imaging contrast agents in ultrasonic echography. They contain laminarized surfactants and, optionally, hydrophilic stabilizers. The laminarized surfactants can be in the form of liposomes. The suspensions are obtained by exposing the laminarized surfactants to air or a gas before or after admixing with an aqueous phase.
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Citations
19 Claims
- 1. A composition suitable for injection into the bloodstream and body cavities of living beings, comprising a suspension of stabilized air or gas microbubbles in a physiologically acceptable aqueous carrier phase having from about 0.01 to about 20% by weight of one or more dissolved or dispersed surfactants, at least one of said surfactants being a film forming surfactant present in the composition at least partially in lamellar or laminar form.
Specification