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Optically coupled frameless stereotactic system and method    

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United States Patent5848967   
Link to this pagehttp://www.wikipatents.com/5848967.html
Inventor(s)Cosman; Eric R. (872 Concord Ave., Belmont, MA 02178)
AbstractA system for quantitative computer graphic determination of positions on a patient's anatomy and positions on associated equipment located near the patient's anatomy in relation to anatomical data, as from CT or MR scanning. A first camera produces a quantitative electronic readout of its field-of-view which provides a determination of relative spacial coordinates of uniquely identifiable points in its field-of-view. A second camera produces a quantitative electronic readout of its field-of-view which provides a determination of relative spacial coordinates of uniquely identifiable points in its field-of-view. The two cameras are located with respect to the patient's anatomy and the associated equipment so that the fields-of-view of the cameras include both the patient's anatomy and the equipment, but are taken from different directions. A body marker is positioned with respect to the patient's anatomy at a known position relative to said patient anatomy. The body marker has known coordinates in a stereotactic coordinate system that is established relative to the patient's anatomy so that the coordinates of all identifiable points in the fields of view of the two cameras can be determined relative to the stereotactic coordinate system and related to imaging data.
   














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Inventor     Cosman; Eric R. (872 Concord Ave., Belmont, MA 02178)
Owner/Assignee    
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Publication Date     December 15, 1998
Application Number     08/482,213
PAIR File History     Application Data   Transaction History
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Litigation
Filing Date     June 7, 1995
US Classification     600/426 600/429
Int'l Classification     A61B 005/00
Examiner     Smith; Ruth S.
Assistant Examiner    
Attorney/Law Firm     Darby & Darby, P.C.
Address
Parent Case     This is a divisional of application Ser. No. 08/441,788, filed May 16, 1995, now U.S. Pat. No. 5,662,111 which is a continuation of application Ser. No. 08/299,987 filed Sep. 1, 1994, now abandoned which is a continuation of application Ser. No. 08/047,879 filed Apr. 15, 1993, now abandoned, which is a continuation of application Ser. No. 07/941,863 filed Sep. 8, 1992, now abandoned, which is a continuation of application Ser. No. 07/647,463 filed Jan. 28, 1991, now abandoned.
Priority Data    
USPTO Field of Search     128/653.1 128/630 128/664 128/665 606/130 600/426 600/429 600/414 600/417 600/427
Patent Tags     optically coupled frameless stereotactic
   
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