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| Number | Title | Issue Date |
| 5248296 | Ultrasonic device having wire sheath An ultrasonic device having a wire sheath for use in removing plaque from a human artery. This ultrasonic device has a wire for removing the plaque, a sheath around the wire for minimizing transverse displacement during cavitation; a handpiece having a po... | 09/28/1993 |
| 4920954 | Ultrasonic device for applying cavitation forces An ultrasonic device for applying cavitation force to an unwanted material is provided. The device is particularly useful for removing plaque from a human artery wherein a portion of the device can enter an artery and pass through the artery to the vicini... | 05/01/1990 |
