Patent ID: 7877133
Filing Date: 2011-01-25
Classification: A61B,A61K

Abstract:
1. A system for at least partially filling and marking a cavity at a site within a patient's breast from which tissue has been removed, comprising: a. a syringe having an elongated body, an inner bore, a plunger slidably disposed within the inner bore; b. a delivery tube having a distal end with a discharge port and a bore in fluid communication with the inner bore of the syringe and the discharge port; c. a quantity of marker forming fluid within the bore of the syringe configured to at least partially fill the cavity at the biopsy site and form therein a porous bioabsorbable body, the marker forming fluid comprising a non-aqueous solvent which is relatively soluble in a body fluid or other water based fluid, a bioabsorbable polymeric solute comprising a copolymer of polylactic acid and polyglycolic acid in a weight ratio of 90:10 to 60:40 in the non-aqueous solvent which is relatively insoluble in body fluid or other water based fluid and which forms in the cavity the porous bioabsorbable body; and d. a releasable, remotely detectable distal tip at the distal end of the delivery tube comprising radiopaque metal and configured to remain within the porous body within the cavity upon the formation thereof, wherein the releasable, remotely detectable radiopaque distal tip at the distal end of the delivery tube defines the discharge port.