GENE HENRY BARNETT
Medical Practice in Cleveland, OH

6377839, Apr 23, 2002

May 29, 1998

09/087370

Iain H. Kalfas - Beachwood OH
Donald W. Kormos - Parma OH
David W. Piraino - Shaker Heights OH
Gene H. Barnett - Shaker Heights OH
Charles P. Steiner - Euclid OH

The Cleveland Clinic Foundation - Cleveland OH

A61B 500

600426, 600427, 600429, 606130, 128897

A patient is secured to a subject support ( ). A stereotaxic wand ( ) is inserted into a tool guide ( ). The wand has a tip portion ( ), a portion extending along a pointing axis ( ) of the wand, an offset portion ( ) which is offset from the pointing axis of the wand, and at least two wand emitters ( ), mounted in alignment with the pointing axis of the wand. The two emitters selectively emit wand signals which are received by three receivers ( ) mounted to a frame assembly ( ). The tool guide includes a bore ( ) extending along a guide axis. The bore is configured for selectively receiving a tool and the tip portion of the wand. An entry point and a trajectory are identified by the surgeon with the wand in the guide. More specifically, a trajectory and location of the wand are superimposed on a diagnostic image on a monitor ( ). If the surgeon is satisfied with the entry point and trajectory shown on the monitor, a surgical tool is inserted into the bore while the tool guide is held along the designated trajectory and at the designated entry point.

5517990, May 21, 1996

Apr 8, 1994

8/224955

Iain H. Kalfas - Beachwood OH
Donald W. Kormos - Parma OH
David W. Piraino - Shaker Heights OH
Gene H. Barnett - Shaker Heights OH

The Cleveland Clinic Foundation - Cleveland OH

A61B 600

1286531

A patient is secured to a subject support (10). A stereotaxic wand (40) is inserted into a tool guide (60). The wand has a tip portion (44), a portion extending along a pointing axis (46) of the wand, an offset portion (42) which is offset from the pointing axis of the wand, and at least two wand emitters (48, 50), mounted in alignment with the pointing axis of the wand. The two emitters selectively emit wand signals which are received by three receivers (14) mounted to a frame assembly (12). The tool guide includes a bore (66) extending along a guide axis. The bore is configured for selectively receiving a tool and the tip portion of the wand. An entry point and a trajectory are identified by the surgeon with the wand in the guide. More specifically, a trajectory and location of the wand are superimposed on a diagnostic image on a monitor (30). If the surgeon is satisfied with the entry point and trajectory shown on the monitor, a surgical tool is inserted into the bore while the tool guide is held along the designated trajectory and at the designated entry point.

5776064, Jul 7, 1998

May 20, 1996

8/650312

Iain H. Kalfas - Beachwood OH
Donald W. Kormos - Parma OH
David W. Piraino - Shaker Heights OH
Gene H. Barnett - Shaker Heights OH
Charles P. Steiner - Euclid OH

The Cleveland Clinic Foundation - Cleveland OH

A61B 600

600414

A patient is secured to a subject support (10). A stereotaxic wand (40) is inserted into a tool guide (60). The wand has a tip portion (44), a portion extending along a pointing axis (46) of the wand, an offset portion (42) which is offset from the pointing axis of the wand, and at least two wand emitters (48, 50), mounted in alignment with the pointing axis of the wand. The two emitters selectively emit wand signals which are received by three receivers (14) mounted to a frame assembly (12). The tool guide includes a bore (66) extending along a guide axis. The bore is configured for selectively receiving a tool and the tip portion of the wand. An entry point and a trajectory are identified by the surgeon with the wand in the guide. More specifically, a trajectory and location of the wand are superimposed on a diagnostic image on a monitor (30). If the surgeon is satisfied with the entry point and trajectory shown on the monitor, a surgical tool is inserted into the bore while the tool guide is held along the designated trajectory and at the designated entry point.

5309913, May 10, 1994

Nov 30, 1992

7/983390

Donald W. Kormos - Parma OH
Gene H. Barnett - Shaker Heights OH
Charles P. Steiner - Euclid OH

The Cleveland Clinic Foundation - Cleveland OH

A61B 600

1286531

A patient's head is anchored (16) at one end of a patient support (10). An array of receivers (50) are mounted on a frame (12) which is fixed to the patient support. The frame carries at least one reference transmitter (52). A wand (42) has at least two emitters (44, 46) mounted thereto. By measuring relative travel time of the signals from the wand emitters to the receiver array and comparing the travel time with travel time over a known distance from the reference transmitter to one or more of the receivers, the position of the wand in a coordinate system of the patient support is determined (80). A three-dimensional array of diagnostic image data was taken through the anchored portion of the patient and at least three markers (114) affixed to the patient. By positioning the wand on the markers after the patient is secured to the patient support, a transform (110) between the patient support coordinate system and the image data coordinate system is derived. Once the relationship between the coordinate systems is known, the surgeon can use the wand to select locations and orientations on a surface of the patient and retrieve corresponding portions of the image data for display on video monitors (30).