Biopsy localization method and device
First Claim
1. A soft target tissue localization device comprising:
- a bioabsorbable element locatable at a soft target tissue site of a patient;
said bioabsorbable element being of a material which is palpably harder than the surrounding soft tissue at the soft target tissue site;
said bioabsorbable element having a pre delivery state and a post delivery state; and
the bioabsorbable element having, a longest dimension of at least about 0.5 cm when in the post delivery state.
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Abstract
A biopsy localization device made according to the invention includes a bioabsorbable element (34), such as a dehydrated collagen plug, delivered in a pre-delivery state to a soft tissue biopsy site (18) of a patient by an element delivery device (32). The bioabsorbable element preferably swells to fill the biopsied open region (26) and preferably is palpably harder than the surrounding soft tissue at the biopsy site. The bioabsorbable element permits the biopsy site to be relocated by palpation to eliminate the need to use metallic clips during biopsies and often eliminates the need for a return to the radiologist for pre-operative localization. In addition, the bioabsorbable element can be used as a therapeutic tool for treatment of the diseased lesion and for hemostasis.
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Citations
37 Claims
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1. A soft target tissue localization device comprising:
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a bioabsorbable element locatable at a soft target tissue site of a patient;
said bioabsorbable element being of a material which is palpably harder than the surrounding soft tissue at the soft target tissue site;
said bioabsorbable element having a pre delivery state and a post delivery state; and
the bioabsorbable element having, a longest dimension of at least about 0.5 cm when in the post delivery state.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A biopsy localization method comprising:
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taking a tissue sample from a biopsy site within a patient;
positioning a bioabsorbable element at the biopsy site;
testing the tissue sample; and
if the testing indicates a need to do so relocating the biopsy site by finding the bioabsorbable element by following a bioabsorbable thread, the thread extending from the patient'"'"'s skin to the bioabsorbable element. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A target tissue localization device comprising:
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an elongate tubular member having a proximal end, a distal end, and a lumen therebetween;
a bioresorbable body contained within the elongate tubular member, the bioresorbable body comprising polylactic acid and polyglycolic acid; and
a radiopaque marker carried by the bioresorbable body. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method for marking a biopsy cavity comprising the steps of:
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providing a bioresorbable body having a radiopaque marker carried by the bioresorbable body, said bioresorbable body comprising polylactic acid and polyglycolic acid;
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; and
testing the biopsy specimen. - View Dependent Claims (31, 32, 33, 34, 35)
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36. The method of claim wherein the bioresorbable body swells upon contact with body fluid.
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37. The method of claim wherein the bioresorbable body swells upon to substantially fill the biopsy site.
Specification