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| Number | Title | Issue Date |
| 6019725 | Three-dimensional tracking and imaging system A 3-D tracking and imaging system (1600) for tracking the position of a surgical instrument (e.g., a catheter, probe, a sensor, needle or the like) inserted into a body, and displaying a 3-D image showing the position of the surgical instrument in referen... | 02/01/2000 |
| 5817022 | System for displaying a 2-D ultrasound image within a 3-D viewing environment A system for displaying a 2-D ultrasound image in a 3-D viewing environment. Within the same 3-D viewing environment, various surgical instruments can be tracked and displayed, thus correlating 3-D virtual surgery with ultrasound imaging for verification.... | 10/06/1998 |
| 5797849 | Method for carrying out a medical procedure using a three-dimensional tracking and imaging system A method for carrying out a medical procedure using a 3-D tracking and imaging system (1600). A surgical instrument, such as a catheter, probe, sensor, needle or the like is inserted into a living being, and the position of the surgical instrument is trac... | 08/25/1998 |
| 5795298 | System for sharing electrocardiogram electrodes and transducers A device having a combined electrode (20) and position tracking transducer (30) mounted to a surgical instrument, such as a catheter (10). In a preferred embodiment of the invention, the electrode (20) serves dual functions, namely as a standard ECG elect... | 08/18/1998 |
| 5779638 | Ultrasound-based 3-D tracking system using a digital signal processor A system for determining a time delay of a signal propagating through a medium. The time delay is used to determine the distance between transducers arrangable within a body. One or more Digital Signal Processors (DSP) are programmed to recognize various ... | 07/14/1998 |
| 5515853 | Three-dimensional digital ultrasound tracking system A method and apparatus for simultaneous measurement of multiple distances by means of networked piezoelectric transducers. Through the use of high frequency digital counters, the propagation delay between the activation of an ultrasonic transducer and the... | 05/14/1996 |
