Methods and chemical preparations for time-limited marking of biopsy sites
First Claim
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1. A method for marking a site within the body of a mammalian patient from which a tissue sample has been removed, said method comprising the step of:
- A. introducing into the site a detectable marker that (i) remains present at the site in sufficient quantity to permit detection and location of the site for at least a predetermined first time period after introduction and (ii) does not interfere with imaging of tissue adjacent the site at a predetermined second time point after introduction.
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Abstract
Detectable markers that may be introduced into a cavity created by removal of a biopsy specimen to mark the location of the biopsy site so that it may be located in a subsequent medical/surgical procedure. The markers remain present in sufficient quantity to permit detection and location of the biopsy site at a first time point (e.g., 2 weeks) after introduction but clear from the biopsy site or otherwise not interfere with imaging of tissues adjacent the biopsy site at a second time point (e.g., 5-7 months) after introduction.
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41 Claims
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1. A method for marking a site within the body of a mammalian patient from which a tissue sample has been removed, said method comprising the step of:
A. introducing into the site a detectable marker that (i) remains present at the site in sufficient quantity to permit detection and location of the site for at least a predetermined first time period after introduction and (ii) does not interfere with imaging of tissue adjacent the site at a predetermined second time point after introduction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method of identifying tissue that is located within a predetermined distance of a boundary of a biopsy cavity that has been created by the removal of a biopsy specimen from a patient, said method comprising the steps of:
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a. introducing into the biopsy cavity a quantity of marker material that is visibly distinguishable from blood and surrounding tissue so as to delineate the outer boundaries of the biopsy cavity; b. forming an incision in the patient to permit visualization of the marker material and the boundaries of the biopsy cavity delineated thereby; and
,c. identifying the tissue that lies within said predetermined distance of the boundary of the biopsy cavity. - View Dependent Claims (41)
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Specification