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Cavity-filling biopsy site markers

  • US 9,649,093 B2
  • Filed: 01/14/2016
  • Issued: 05/16/2017
  • Est. Priority Date: 02/02/1999
  • Status: Expired due to Fees
First Claim
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1. A mass comprising:

  • particles that exhibit an in vivo lifetime and that include a bioresorbable materialandbubble cavities disposed in the particles,whereinthe bubble cavities have length, width, and height dimensions at least one of which is less than or equal to about 2000 microns;

    the mass exhibits enhanced detectability by ultrasound energy during the lifetime;

    andthe lifetime begins upon exposure to in vivo fluids and ends between about 2 and about 20 weeks afterward.

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