Method for using an MRI compatible biopsy device with detachable probe
First Claim
1. A method of performing a biopsy of tissue located at coordinates in a first, second, and third dimension, the method comprising:
- (a) localizing a patient'"'"'s breast in a localization fixture, wherein the localization fixture comprises;
(i) a probe assembly comprising;
a proximal end, a distal end, a lumen, an opening in communication with the lumen, wherein the opening is positioned proximate to the distal end, andan insertion tool operable to selectively block the opening,(ii) a probe assembly guide coupled to the probe assembly, and(iii) a compression plate operable to stabilize the patient'"'"'s breast, wherein the compression plate comprises;
elongate slots extending along the first dimension, wherein the slots are spaced apart along the second dimension,wherein the act of localizing the patient'"'"'s breast comprises compressing at least a portion of the breast with the compression plate;
(b) locating suspicious tissue with an MRI scan;
(c) defining coordinates in the first, second, and third dimensions that correspond to the location of the suspicious tissue;
(d) inserting the probe assembly into the patient'"'"'s breast guided by the probe assembly guide, wherein the probe assembly is inserted along the third dimension, wherein the probe assembly is inserted through one of the elongate slots of the compression plate;
(e) performing a selected one of a diagnostic procedure, surgical procedure and a therapeutic procedure with the probe assembly inserted into tissue and detached from a biopsy instrument;
(e) engaging a handle of the biopsy instrument to the proximal end of the probe assembly, wherein the biopsy instrument comprises a cutter sized to translate in the lumen of the probe assembly, wherein the cutter is retracted in the handle at the initiation of the act of coupling the handle to the probe assembly; and
(f) advancing the cutter through the lumen in the probe assembly to the tissue.
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Accused Products
Abstract
A method for performing Magnetic Resonance Imaging (MRI) guided core biopsies is tendered more accurate and efficient by precisely positioning a disengaged probe assembly with respect to a localization fixture attached to a breast coil platform. The precise position is defined by MRI stereotopic location of suspicious tissue with respect to a fiducial marker on the localization fixture. With the probe inserted, dual lumens in the probe assembly are used for drainage or insertion of fluids as well as inserting diagnostic and therapeutic tools. Core biopsies are performed by engaging a biopsy instrument handle containing a cutter, with the localization fixture providing support and position to the handle. Repeated MRI scans are facilitated by the ability to disengage the handle without risk of displacing the probe assembly from the biopsy site.
76 Citations
23 Claims
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1. A method of performing a biopsy of tissue located at coordinates in a first, second, and third dimension, the method comprising:
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(a) localizing a patient'"'"'s breast in a localization fixture, wherein the localization fixture comprises; (i) a probe assembly comprising; a proximal end, a distal end, a lumen, an opening in communication with the lumen, wherein the opening is positioned proximate to the distal end, and an insertion tool operable to selectively block the opening, (ii) a probe assembly guide coupled to the probe assembly, and (iii) a compression plate operable to stabilize the patient'"'"'s breast, wherein the compression plate comprises; elongate slots extending along the first dimension, wherein the slots are spaced apart along the second dimension, wherein the act of localizing the patient'"'"'s breast comprises compressing at least a portion of the breast with the compression plate; (b) locating suspicious tissue with an MRI scan; (c) defining coordinates in the first, second, and third dimensions that correspond to the location of the suspicious tissue; (d) inserting the probe assembly into the patient'"'"'s breast guided by the probe assembly guide, wherein the probe assembly is inserted along the third dimension, wherein the probe assembly is inserted through one of the elongate slots of the compression plate; (e) performing a selected one of a diagnostic procedure, surgical procedure and a therapeutic procedure with the probe assembly inserted into tissue and detached from a biopsy instrument; (e) engaging a handle of the biopsy instrument to the proximal end of the probe assembly, wherein the biopsy instrument comprises a cutter sized to translate in the lumen of the probe assembly, wherein the cutter is retracted in the handle at the initiation of the act of coupling the handle to the probe assembly; and (f) advancing the cutter through the lumen in the probe assembly to the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of a diagnostic imaging guided minimally invasive procedure, comprising:
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(a) localizing a human breast in a localization fixture; (b) stabilizing the human breast using a compression plate including a series of apertures, wherein the act of stabilizing comprises compressing at least a portion of the breast with the compression plate; (c) diagnostic imaging the human breast to locate a tissue location; (d) attaching a probe assembly to a probe guide assembly coupled to the localization fixture; (e) positioning the probe guide assembly to a lateral spatial location on the human breast; (f) guiding the probe guide assembly along horizontal and vertical directions parallel to the lateral spatial location on the human breast to an insertion angle to position the probe assembly at the tissue location; (g) inserting the probe assembly into the human breast guided by the probe guide assembly toward a medial side of the human breast, wherein the act of inserting the probe assembly further comprises inserting the probe assembly through one of the apertures of the compression plate; (h) engaging a handle including a cutter to the probe assembly to obtain a core biopsy sample through the probe assembly, wherein the cutter is fully retracted within the handle when the handle is initially engaged to the probe assembly, such that the cutter does not protrude from the handle when the handle is initially engaged to the probe assembly; and (i) advancing the cutter relative to the handle and into the probe assembly to sever a tissue sample. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for performing a biopsy, the method comprising:
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(a) localizing a body portion in a localization fixture, wherein the localization fixture comprises; (i) a probe assembly comprising; a proximal end, a distal end, a cutter lumen, and an opening in communication with the cutter lumen, wherein the opening is positioned proximate to the distal end, (ii) a probe assembly guide coupled to the probe assembly, and (iii) a compression plate operable to stabilize the body portion, wherein the compression plate comprises apertures arranged along first and second dimensions, wherein the act of localizing comprises compressing at least a portion of the body portion with the compression plate; (b) imaging the body portion to determine a tissue location relative to the localization fixture; (c) determining the tissue location relative to the localization fixture with respect to first, second, and third dimensions; (d) positioning the probe assembly at the tissue location relative to the first and second dimensions guided by the probe assembly guide; (e) inserting the probe assembly along the third dimension to place the opening of the probe assembly proximate to the tissue location, wherein the act of inserting comprises inserting the probe assembly through one of the apertures of the compression plate; (f) imaging the body portion to determine the tissue location relative to the inserted probe assembly; (g) coupling a handle of a biopsy instrument to the probe assembly, wherein the biopsy instrument comprises a cutter configured to translate through the cutter lumen of the probe assembly, wherein the biopsy instrument is configured to selectively engage with the probe assembly, wherein the cutter is retracted within the handle at the initiation of the act of coupling the handle to the probe assembly; (h) advancing the cutter of the biopsy instrument through the cutter lumen of the probe assembly; and (i) severing a portion of tissue at the tissue location with the cutter, wherein the portion of tissue is severed adjacent the opening of the probe assembly. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification