(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2002/0107437 Al
Sirimanne et al. (43) Pub. Date: Aug. 8,2002
(54) SUBCUTANEOUS CAVITY MARKING DEVICE AND METHOD
(76) Inventors: D. Laksen Sirimanne, Palo Alto, CA
(US); Douglas S. Sutton, Pacifica, CA
(US); Natalie V. Fawzi, Belmont, CA
(US); Gail Lebovic, Palo Alto, CA
Cameron A. King
Morrison & Foerster LLP
425 Market Street
San Francisco, CA 94105-2482 (US)
(21) Appl. No.: 10/114,712
(22) Filed: Apr. 1, 2002
Related U.S. Application Data
(63) Continuation of application No. 09/805,652, filed on Mar. 13, 2001, which is a continuation of application No. 09/285,329, filed on Apr. 2, 1999, now Pat. No.
6,356,782, which is a continuation-in-part of application No. 09/220,618, filed on Dec. 24, 1998, now abandoned.
(51) Int. CI.7 A61B 5 05
(52) U.S. CI 600/407
These are subcutaneous cavity marking devices and methods. More particularly, upon insertion into a body, the cavity marking device and method enable one to determine the center, orientation, and periphery of the cavity by radiographic, mammographic, echogenic, or other non-invasive imaging techniques. Also, the device contains a bioabsorbable or non-bioabsorbable marker. The device may be combined with various substances enhancing the radiopaque, mammographic, or echogenic characteristics of the marker or the body allowing it to be observed by any non-invasive imaging techniques. This is further a method of marking a subcutaneous cavity using a bioabsorbable material and a bioabsorbable or non-bioabsorbable marker in conjunction with the material. The method also may combine any of the features as described with the device.