Dual probe
First Claim
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1. A percutaneous surgical instrument for de-bulking calculi or drilling bone, the instrument comprising:
- an actuator for generating vibrations at ultrasonic frequencies;
a horn coupled to said actuator for amplifying the actuator vibration;
a fixed probe attached to said horn for engaging the calculi and introducing the ultrasonic frequencies thereto;
a floating probe disposed concentric to and over said fixed probe, said floating probe being slidable over said fixed probe;
a free mass, disposed between said horn and said floating probe for oscillating therebetween, in response to actuator vibration, for causing low frequency impact with the calculi.
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Abstract
A percutaneous surgical instrument for de-bulking calculi or drilling bone includes an actuator for generating vibrations at ultrasonic frequencies and a horn coupled to said actuator for amplifying the actuator vibration. A fixed probe is attached to said horn for engaging the calculi and introducing the ultrasonic frequencies thereto. A floating probe is disposed concentric to and over said fixed probe and slidable thereover. A free mass is disposed between the horn and the floating probe for oscillating therebetween, in response to actuator vibration, for causing low frequency impact with the calculi.
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Citations
26 Claims
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1. A percutaneous surgical instrument for de-bulking calculi or drilling bone, the instrument comprising:
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an actuator for generating vibrations at ultrasonic frequencies;
a horn coupled to said actuator for amplifying the actuator vibration;
a fixed probe attached to said horn for engaging the calculi and introducing the ultrasonic frequencies thereto;
a floating probe disposed concentric to and over said fixed probe, said floating probe being slidable over said fixed probe;
a free mass, disposed between said horn and said floating probe for oscillating therebetween, in response to actuator vibration, for causing low frequency impact with the calculi. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 26)
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14. A percutaneous surgical instrument for de-bulking calculi or drilling bone, the instrument comprising:
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an actuator for generating vibrations at ultrasonic frequencies;
a horn coupled to said actuator for amplifying the actuator vibration;
a fixed probe attached to said horn for engaging the calculi or bone and introducing the ultrasonic frequencies thereto, said fixed probe having a lumen therethrough for aspiration of disintegrated calculi or bone;
a floating probe disposed concentric to and over said fixed probe, said floating probe being slidable over said fixed probe;
a free mass, disposed between said horn and said floating probe for oscillating therebetween, in response to actuator vibration, for causing low frequency impact with the calculi or bone. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A percutaneous surgical instrument for de-bulking calculi or drilling bone, the instrument comprising:
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an actuator for generating vibrations at ultrasonic frequencies;
a horn coupled to said actuator for amplifying the actuator vibration;
a fixed probe attached to said horn for engaging the calculi and introducing the ultrasonic frequencies thereto;
a floating probe disposed concentric to and within said fixed probe, said floating probe being slidable within said fixed probe;
a free mass, disposed between said horn and said floating probe for oscillating therebetween, in response to actuator vibration, for causing low frequency impact with the calculi.
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Specification