Biopsy device with manually rotated sample barrel
View Patent ↗A biopsy device and method may be used to obtain a tissue sample, such as a breast tissue biopsy sample. The biopsy device includes an outer cannula having a distal piercing tip, a cutter lumen, and a cutter tube that is rotated by an integral motor and manually translated past a side aperture in the outer cannula to sever a tissue sample. A sample capturing structure (e.g., sample barrel) has a plurality of sample cavities (e.g., radially symmetric, revolver handgun orientation) that are manually aligned one at a time to capture one or more samples.
1. A method of obtaining a plurality of biopsy tissue samples, the method comprising:
(a) providing a biopsy device, the biopsy device comprising:
(i) a biopsy probe cannula having a distal end and a distal opening, wherein the biopsy probe cannula defines a probe axis,
(ii) a cutter tube translatable within the probe cannula,
(iii) a handle coupled with the probe cannula, wherein the handle has a feature configured to be coupled with a vacuum source, and
(iv) a storage unit engaged with the handle, wherein the storage unit has a plurality of tissue storage compartments, wherein the storage unit is configured to receive at least one tissue sample within each of the tissue storage compartments, wherein the storage unit is configured to rotate relative to the handle, about a rotation axis, in order to receive tissue samples communicated proximally through the cutter tube, wherein the rotation axis is positioned lateral to the probe axis;
(b) obtaining a first biopsy tissue sample from a patient, wherein the first biopsy tissue sample is communicated to a first tissue storage compartment of the plurality of tissue storage compartments via the cutter tube by a vacuum urging the first tissue sample proximally through the cutter tube;
(c) manually rotating the storage unit about the rotation axis to substantially align a second tissue storage compartment of the plurality of tissue storage compartments with the cutter tube, wherein the act of manually rotating the storage unit is carried out without using a motor to rotate the storage unit; and
(d) obtaining a second biopsy tissue sample from a patient, wherein the second biopsy tissue sample is communicated to the second tissue storage compartment via the cutter tube by a vacuum urging the second tissue sample proximally through the cutter tube.
2. The method of claim 1 , wherein the storage unit has a plurality of longitudinal ridges, wherein the act of manually rotating the storage unit about the rotation axis comprises engaging at least one of the longitudinal ridges and manually pushing the storage unit to rotate the storage unit.
3. The method of claim 2 , wherein the storage unit comprises a barrel defining the rotation axis.
4. The method of claim 3 , wherein the longitudinal ridges are angularly spaced about the rotation axis and along an outer perimeter of the barrel.
5. The method of claim 1 , wherein the cutter tube defines a longitudinal axis, wherein the rotation axis is substantially parallel with the longitudinal axis defined by the cutter tube.
6. The method of claim 1 , wherein each tissue storage compartment comprises a discrete lumen defined by the storage device.
7. The method of claim 1 , wherein the storage unit has a proximal blocking component configured to restrict proximal communication of tissue samples relative to the storage unit.
8. The method of claim 7 , wherein the blocking component has a plurality of apertures configured to permit communication of fluid through the apertures while preventing communication of tissue samples through the apertures.
9. The method of claim 1 , wherein the distal opening of the probe cannula comprises a transverse tissue receiving window located proximal from but near the distal end of the probe cannula.
10. The method of claim 1 , wherein the probe cannula comprises a cutter lumen and a vacuum lumen, wherein the cutter lumen is configured to receive the cutter tube, wherein the vacuum lumen is separate from but in fluid communication with the cutter lumen.
11. The method of claim 1 , wherein the act of obtaining the first biopsy tissue sample comprises translating the cutter tube relative to the probe cannula.
12. The method of claim 11 , wherein the act of obtaining obtaining the first biopsy tissue sample further comprises rotating the cutter tube relative to the probe cannula.
13. The method of claim 12 , wherein the act of rotating the cutter tube comprises activating a drive motor to rotate the cutter tube.
14. The method of claim 1 , further comprising:
(a) providing a sample extraction tool comprising a plurality of radially spaced and longitudinally parallel pushers registered for insertion simultaneously through the tissue storage compartments;
(b) removing the storage unit from the handle; and
(c) inserting the pushers through the tissue storage compartments to remove the first and second biopsy tissue samples from the storage unit.
15. The method of claim 1 , wherein the biopsy device further comprises a port configured to couple with an external vacuum source, wherein the port is further configured to communicate a vacuum from the external vacuum source to the proximal end of the cutter tube.
16. The method of claim 15 , wherein the port configured to couple with an external vacuum source is proximal to the storage unit.
17. The method of claim 16 , wherein the port configured to couple with an external vacuum source is oriented along a port axis that is substantially parallel to the probe axis.
18. A method of obtaining a plurality of biopsy tissue samples using a biopsy device, wherein the biopsy device comprises a biopsy probe cannula, a cutter tube, a handle, and a storage unit, wherein the biopsy probe cannula has a distal end and a distal opening, wherein the biopsy probe cannula defines a probe axis, wherein the cutter tube is translatable within the probe cannula, wherein the handle is coupled with the probe cannula, wherein the storage unit is engaged with the handle, wherein the storage unit has a plurality of tissue storage compartments, wherein the storage unit is configured to receive at least one tissue sample within each of the tissue storage compartments, wherein the storage unit is configured to rotate relative to the handle, about a rotation axis, in order to receive tissue samples communicated proximally through the cutter tube, wherein the rotation axis is positioned lateral to the probe axis, the method comprising:
(a) obtaining a first biopsy tissue sample from a patient, wherein the first biopsy tissue sample is communicated to a first tissue storage compartment of the plurality of tissue storage compartments via the cutter tube by a vacuum urging the first tissue sample proximally through the cutter tube;
(b) manually rotating the storage unit about the rotation axis to substantially align a second tissue storage compartment of the plurality of tissue storage compartments with the cutter tube, wherein the act of manually rotating the storage unit is carried out without using a motor to rotate the storage unit; and
(c) obtaining a second biopsy tissue sample from a patient, wherein the second biopsy tissue sample is communicated to the second tissue storage compartment via the cutter tube by a vacuum urging the second tissue sample proximally through the cutter tube.