Biopsy localization method and device
First Claim
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1. A biopsy method comprising:
- positioning a sheath and a biopsy needle with respect to a target site in tissue to be biopsied;
extending the biopsy needle at least partially through the sheath;
removing at least one tissue biopsy sample from the target site through the biopsy needle;
removing the biopsy needle from the sheath while leaving the sheath positioned in the tissue at the target site;
after the step of removing the biopsy needle, inserting a delivery device into the sheath, wherein the delivery device comprises at least one dehydrated bioabsorbable element including starch; and
delivering the bioabsorbable element from the delivery device to the target site from which the tissue biopsy sample was removed.
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Abstract
Methods for localizing a biopsy site are disclosed. The method includes taking a tissue sample from a biopsy site and positioning a detectable, bioabsorbable element at the biopsy site at the time that the tissue sample was taken. The tissue sample is then tested. The biopsy site is then relocated by finding the bioabsorbable element. The bioabsorbable element may be made of collagen, gelatin, cellulose, polylactic acid, and/or polyglycolic acid. The detectable bioabsorbable element may be relocated using ultrasound or mammography. The bioabsorbable element may also swell upon contact with body fluid.
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Citations
12 Claims
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1. A biopsy method comprising:
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positioning a sheath and a biopsy needle with respect to a target site in tissue to be biopsied; extending the biopsy needle at least partially through the sheath; removing at least one tissue biopsy sample from the target site through the biopsy needle; removing the biopsy needle from the sheath while leaving the sheath positioned in the tissue at the target site; after the step of removing the biopsy needle, inserting a delivery device into the sheath, wherein the delivery device comprises at least one dehydrated bioabsorbable element including starch; and delivering the bioabsorbable element from the delivery device to the target site from which the tissue biopsy sample was removed. - View Dependent Claims (2, 3, 4, 5)
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6. A breast biopsy localization method comprising:
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positioning a sheath having a distal end with respect to a target site in breast tissue to be biopsied; taking a tissue sample from the target site within a patient by a needle biopsy device passing through and extending from the distal end of the sheath so as to create a biopsy site; removing the biopsy needle from the sheath while leaving the sheath in the breast tissue; without removing the sheath from the breast tissue, and after removing the biopsy needle from the sheath, inserting a bioabsorbable element delivery device into the sheath, wherein the bioabsorbable element delivery device contains at least one detectable bioabsorbable element; deploying the at least one detectable bioabsorbable element through the bioabsorbable element delivery device to mark the biopsy site from which the tissue sample was taken. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification