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 operator control of vacuum pulses at an open end of 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.
83 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 operator control of vacuum pulses at an open end of 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, 31)
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Specification