The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1992
Filed:
Nov. 21, 1989
Bernard W Siczek, Boulder, CO (US);
Michael A DePourbaix, Arvada, CO (US);
Michael Assa, Englewood, CO (US);
Fischer Imaging Corporation, Denver, CO (US);
Abstract
A precision mammographic needle biopsy system in which a patient having a suspected non-palpable lesion of the breast lies on a table having a breast aperture therein through which the patient's breast pendulantly protrudes includes a compression paddle for selectively compressing the breast against an X-ray film holder to firmly hold the breast in a suitable projection; a radially pivoting X-ray arm arranged to direct an X-ray beam in horizontal alignment with the patient's breast onto an X-ray film; a radially pivoting X-ray film holder arm supporting both the X-ray film holder and a puncture instrument holding a biopsy needle having adjustable azimuth angle, elevation angle, and insertion depth parameters; and a computer-digitizer console including a cursor and having a light box digitizer view area for viewing and digitizing a point of interest depicted in two stereoscopic X-ray images of the patient's breast, a computer for analyzing the relative positions of the point of interest depicted on the two stereoscopic X-ray images with reference to a pair of reference marks projected onto each of the images and for determinig the location in 3-dimensional space of the point of interest specified by the azimuth angle, elevation angle, and insertion depth parameters of the biopsy needle, and a visual display for displaying these parameters to the operator.