Patent ID: 11877898
Assignee: HOLOGIC, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A remotely detectable marker for implantation in a targeted site within a patient's body from which tissue has been removed, the marker comprising:
a radiopaque element comprising a braided, woven or mesh structure formed by polymeric threads and defining an interior region, the radiopaque element being movable from a collapsed shape to an expanded shape and having a distinguishing pattern for unique identification under x-ray imaging; and
a non-palpable body disposed within the interior region of the radiopaque element, the non-palpable body comprising a substantially dehydrated material,
wherein, when exposed to a fluid during the implantation, the non-palpable body has a swell ratio of 100-1000 wt/wt for approximately 30 to 60 minutes, such that the non-palpable body has a final, fully swelled shape that is configured to partially fill a cavity at the targeted site and to remain substantially physically stable within the cavity for at least approximately 52 weeks,
wherein the final, fully swelled shape of the non-palpable body is different than the expanded shape of the radiopaque element, and
wherein the non-palpable body is configured to reflect ultrasound in a way that the non-palpable body is recognizable as being artificial and is distinguishable from the radiopaque element.