TISSUE REMOVAL DEVICES, SYSTEMS AND METHODS
First Claim
Patent Images
1. A tissue removal device, comprising:
- a housing;
a hollow needle extending from the housing and comprising an open distal tip outside the housing;
an ultrasonic transducer positioned in the housing and configured for mechanically vibrating the needle;
an aspiration line communicating with the needle and configured for communicating with a vacuum source outside the housing, wherein the needle and the aspiration line define an aspiration path from the distal tip, through the housing, and out from the housing to the vacuum source; and
a vacuum pulsing device positioned outside the housing and configured for generating vacuum pulses at the distal tip, the vacuum pulsing device comprising an actuator and a movable member, wherein the actuator is configured for moving the movable member alternately between a closed position that obstructs the aspiration path and an open position.
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Abstract
A tissue removal device includes a hollow needle, an ultrasonic transducer for mechanically vibrating the needle, an aspiration line communicating with the needle, and a vacuum pulsing device for generating vacuum pulses in the needle. The device may be utilized for breaking up tissue by phacoemulsification, vacuum pulsing, or both.
51 Citations
31 Claims
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1. A tissue removal device, comprising:
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a housing; a hollow needle extending from the housing and comprising an open distal tip outside the housing; an ultrasonic transducer positioned in the housing and configured for mechanically vibrating the needle; an aspiration line communicating with the needle and configured for communicating with a vacuum source outside the housing, wherein the needle and the aspiration line define an aspiration path from the distal tip, through the housing, and out from the housing to the vacuum source; and a vacuum pulsing device positioned outside the housing and configured for generating vacuum pulses at the distal tip, the vacuum pulsing device comprising an actuator and a movable member, wherein the actuator is configured for moving the movable member alternately between a closed position that obstructs the aspiration path and an open position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for removing tissue from a surgical site, the method comprising:
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inserting a distal tip of a hollow needle of a tissue removal device into the surgical site, wherein an ultrasonic transducer of the tissue removal device is coupled to the needle, and the needle is in fluid communication with a vacuum pulsing device; breaking up tissue in the surgical site by operating the tissue removal device according to a mode selected from the group consisting of; a phacoemulsification-only mode in which the ultrasonic transducer vibrates the needle while the vacuum pulsing device is inactive; a vacuum pulsing-only mode in which the ultrasonic transducer is inactive while the vacuum pulsing device applies vacuum pulses to the tissue via the distal tip; and a phacoemulsification-vacuum pulsing mode in which the ultrasonic transducer vibrates the needle and the vacuum pulsing device is active, sequentially or simultaneously with vibrating the needle, to apply vacuum pulses to the tissue via the distal tip; and aspirating the broken up tissue through the needle, through the vacuum pulsing device, and to a tissue collection site.
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Specification