Biopsy localization method and device

• US 8,292,822 B2
• Filed: 05/04/2004
• Issued: 10/23/2012
• Est. Priority Date: 06/22/1998
• Status: Expired due to Term

• Current Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Original Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Inventors: Fulton, Richard E., Dubrul, William Richard
• Primary Examiner(s): SZMAL, BRIAN SCOTT
• Application Number:
  US10/839,112
• Publication Number:
  US 20040210160A1
• Time in Patent Office: 3,094 Days
• Field of Search: 600/431, 600/562, 600/565, 600/567, 623/1.34, 623/1.15, 606/198, 606/196, 604/514, 604/286, 128/865
• US Class Current: 600/526
• CPC Class Codes: A61B 10/02 Instruments for taking cell samples or for biopsy A61B10/0038 and A61B10/0045 take precedence; needle locating or guiding means A61B17/3403; samplers for enzymology or microbiology C12M1/26; sampling or preparing biological specimens G01N33/48
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2090/3908 Soft tissue, e.g. breast tissue
• CPC Class Codes: A61B 2090/3962 palpable
• CPC Class Codes: A61B 2090/3987 Applicators for implanting markers
• CPC Class Codes: A61B 6/502 for diagnosis of breast, i.e. mammography
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A biopsy localization device made according to the invention includes a bioresorbable element, such as a cellulose. The bioresorbable element preferably carries a radiopaque marker. The bioresorbable element preferably swells to fill the biopsied open region. The bioresorbable element and radiopaque marker permit the biopsy site to be relocated by various techniques, including mammography and ultrasound. In addition, the bioresorbable element can be used as a therapeutic tool for treatment of the diseased lesion and for hemostasis.

Claims

1. A method for marking a biopsy cavity comprising the steps of:

providing a substantially dehydrated bioresorbable body having a radiopaque marker carried by the bioresorbable body, said bioresorbable body comprising cellulose;

removing a biopsy specimen from the breast of a patient, thereby creating a biopsy site;

inserting the bioresorbable body into the biopsy site to mark the location of the biopsy site, wherein the bioresorbable body after insertion contacts body fluid and swells to substantially fill the biopsy site.

2. The method of claim 1, further comprising the step of relocating the biopsy site by detecting the radiopaque marker.

3. The method of claim 1, wherein the bioresorbable body comprises a single bioresorbable body.

4. The method of claim 1, wherein the radiopaque marker is contained within the bioresorbable body.

5. The method of claim 1, wherein the radiopaque marker is detected by mammography.

6. The method of claim 1, wherein the radiopaque marker is detected by ultrasound.

7. The method of claim 1, wherein the bioresorbable body swells about 100 to 300 percent in a post delivery state of the bioresorbable body relative to a pre-delivery state of the bioresorbable body.

8. The method of claim 1, wherein the bioresorbable body is softer in a post delivery state of the bioresorbable body than in a pre-delivery state of the bioresorbable body.