×

Mixed gas microbubble compositions

  • US 6,372,195 B1
  • Filed: 01/17/1997
  • Issued: 04/16/2002
  • Est. Priority Date: 07/30/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. An injectable ultrasound contrast medium comprising:

  • (a) biocompatible at body temperature gaseous substances which, when in suspension in an aqueous carrier liquid containing surfactants, additives, and stabilizers, provide contrast agents for ultrasound echocardiography, wherein;

    (b) the medium is a mixture which contains a modifier gas A and the balance of the mixture is an osmotic agent gas B;

    (c) the ratio of gas A to gas B is 200;

    1 to 3;

    2 by volume; and

    (d) gas B has a water solubility of not more than about 0.5 mM at 25°

    C. and one atmosphere and an average molecular weight at least about 4 times that of gas A.

View all claims
  • 14 Assignments
Timeline View
Assignment View
    ×
    ×