Systems and methods for controlling vacuum within phacoemulsification systems
First Claim
1. A phacoemulsification system comprising:
- a phacoemulsification handpiece having a needle;
wherein the needle is coupled to a power source configured to cause the needle to be ultrasonically vibrated during operation;
wherein the needle further defines an aspiration port that is coupled to an aspiration source;
a footpedal defining a first position and a second position; and
a computer program product operatively coupled to the phacoemulsification handpiece and the footpedal, the computer program product having a non-transitory computer-usable medium having a sequence of instructions stored thereon which, when executed by a processor, causes said processor to execute a process that controls power from the power source and vacuum from the aspiration source applied to the phacoemulsification handpiece, said process comprising;
providing the vacuum at a first vacuum level to the handpiece up to a first maximum vacuum level on a condition that the footpedal is at the first position;
determining if a time counter has reached a time counter limit, wherein the time counter is actuated on a condition that the footpedal transitions from the first position to the second position; and
providing power to the handpiece on a condition that the footpedal is at the second position; and
reducing the vacuum to a second vacuum level up to a new maximum vacuum level on a condition that the footpedal transitions from the first position to the second position and the time counter limit is reached, wherein the new maximum vacuum level is less than the first maximum vacuum level.
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Accused Products
Abstract
Systems and methods for controlling vacuum within phacoemulsification systems are described. The phacoemulsification system may include a handpiece having a needle coupled to a power source configured to cause the needle to be ultrasonically vibrated, and an aspiration source. The system further includes a footpedal that defines a first position and a second position and a computer program product, operatively coupled to the handpiece and the footpedal, having a non-transitory computer-usable medium having a sequence of instructions which, when executed by a processor, causes the processor to execute a process that controls power from the power source and vacuum from the aspiration source applied to the handpiece.
14 Citations
13 Claims
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1. A phacoemulsification system comprising:
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a phacoemulsification handpiece having a needle; wherein the needle is coupled to a power source configured to cause the needle to be ultrasonically vibrated during operation; wherein the needle further defines an aspiration port that is coupled to an aspiration source; a footpedal defining a first position and a second position; and a computer program product operatively coupled to the phacoemulsification handpiece and the footpedal, the computer program product having a non-transitory computer-usable medium having a sequence of instructions stored thereon which, when executed by a processor, causes said processor to execute a process that controls power from the power source and vacuum from the aspiration source applied to the phacoemulsification handpiece, said process comprising; providing the vacuum at a first vacuum level to the handpiece up to a first maximum vacuum level on a condition that the footpedal is at the first position; determining if a time counter has reached a time counter limit, wherein the time counter is actuated on a condition that the footpedal transitions from the first position to the second position; and providing power to the handpiece on a condition that the footpedal is at the second position; and
reducing the vacuum to a second vacuum level up to a new maximum vacuum level on a condition that the footpedal transitions from the first position to the second position and the time counter limit is reached, wherein the new maximum vacuum level is less than the first maximum vacuum level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification