Surgery – Truss – Pad
Patent
1994-09-26
1995-08-22
Zele, Krista M.
Surgery
Truss
Pad
1286532, 601 3, 607 97, A61B 5055
Patent
active
054430682
ABSTRACT:
A positioner for a magnetic resonance (MR) surgery system which positions a focal point of an ultrasound transducer to selectively destroys tissue in a region within a patient. The positioning means moves an ultrasound transducer under the control of an operator. Mechanical threaded shafts and slides act as screw drives causing several connected slides to move the ultrasound transducer in three dimensions. Expanding shafts are connected between a fixed point on a housing and the actuating point of the threaded shafts. Two of the expanding shafts employ universal joints allowing the shafts to rotate as they follow the slides. The third expanding shaft need only expand but the relative angle between its attachment points does not change, thereby eliminating the need for universal joints. An MR imaging system employing a temperature sensitive pulse sequence, creates an image of the tissue and the region being heated to allow the operator to adjust the position of the ultrasonic transducer so as to direct ultrasonic energy to the appropriate location.
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Abeling Walter R.
Cline Harvey E.
Rohling Kenneth W.
General Electric Company
Snyder Marvin
Zale Lawrence P.
Zele Krista M.
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