Methods and devices for automated biopsy and collection of soft tissue
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[0052] Referring now to FIGS. 1, 4, and 5, a preferred embodiment of an automatic core biopsy device 10 of the type disclosed in related patent application Ser. No. 08 / 217,246 is illustrated. The illustrated biopsy instrument 10 comprises a housing 14 having a hinged lid 16. A needle assembly 18 extends out of the housing 14, and comprises a hollow outer piercing needle 20, an inner cuter 22 having a lumen 23 (FIG. 5), a tissue cassette housing 24, and a tissue cassette 26. The hollow outer piercing needle 20 further includes a tissue receiving port or bowl 28. A thumbwheel 30 interconnects the tissue cassette housing 24 and the hollow outer piercing needle 20, preferably permitting rotation of the needle 20 without rotating the tissue cassette housing 24, as will be more completely described hereinbelow. A vacuum port 32 in the tissue cassette housing 24 is adapted for attachment to a vacuum source through a tube or tubing 34, in order to provide a vacuum at the tissue receiving po...
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