Cavity-filling biopsy site markers
First Claim
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1. An ultrasound-detectable biopsy marker mass which has a detectable in-vivo lifetime during which the marker mass remains readily detectable by ultrasound, and which is formed of particles of a bio-resorbable material having bubble cavities inside the particles and having a particle size between about 200 microns and about 500 microns.
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Abstract
An ultrasound-detectable biopsy marker mass has a detectable in-vivo lifetime during which the marker mass remains readily detectable by ultrasound imaging. The ultrasound-detectable biopsy marker mass is formed of particles of a bio-resorbable material having bubble cavities and having a particle size between about 200 microns and about 500 microns.
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22 Claims
- 1. An ultrasound-detectable biopsy marker mass which has a detectable in-vivo lifetime during which the marker mass remains readily detectable by ultrasound, and which is formed of particles of a bio-resorbable material having bubble cavities inside the particles and having a particle size between about 200 microns and about 500 microns.
- 6. An ultrasound-detectable biopsy marker mass which has a detectable in-vivo lifetime during which the marker mass remains readily detectable by ultrasound, and which is formed of particles of a bio-resorbable material having a particle size between about 300 microns and about 500 microns, and at least a portion of the particles having one or more bubble cavities inside a respective particle.
- 11. A bolus of biopsy marker powder which is ultrasonically detectable in-vivo within a patient'"'"'s biopsy site for a period of at least two weeks but not longer than six months, which comprises a comminuted bio-resorbable polymeric powdered material, at least 80% of the comminuted powder having particles with a particle size of about 300 to about 800 microns and the particles of the comminuted powder having one or more bubble cavities within the particles smaller than the particle size of the particles.
Specification