Systems and methods for transverse phacoemulsification
First Claim
Patent Images
1. A phacoemulsification system, comprising:
- a phacoemulsification handpiece having a needle and a horn, the needle having a distal end and at least one notch carved out of a side of an outer surface of the horn, wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn,wherein the phacoemulsification handpiece is configured to vibrate the distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and
a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece.
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Abstract
The invention is generally directed to phacoemulsification systems and methods, and more particularly to systems and methods for providing transverse phacoemulsification. In accordance with one embodiment, a phacoemulsification system is provided having a handpiece with a needle, wherein the phacoemulsification system is configured to vibrate the distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency is applied to the handpiece.
282 Citations
26 Claims
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1. A phacoemulsification system, comprising:
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a phacoemulsification handpiece having a needle and a horn, the needle having a distal end and at least one notch carved out of a side of an outer surface of the horn, wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn, wherein the phacoemulsification handpiece is configured to vibrate the distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A phacoemulsification system, comprising:
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a phacoemulsification handpiece having a needle and a horn assembly, wherein the horn assembly comprises a horn and one or more piezoelectric crystals and the horn assembly having at least one notch carved out of a side of an outer surface of the horn wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn, wherein the phacoemulsification handpiece is configured to vibrate a distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece. - View Dependent Claims (13, 14, 15, 16)
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17. A phacoemulsification system, comprising:
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a phacoemulsification handpiece having a horn with at least one notch carved out of a side of an outer surface of the horn, wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn; one or more piezoelectric crystals; a needle having an adapter configured to couple the needle with the horn, the adapter having a center of mass off from a longitudinal axis of the needle, wherein the phacoemulsification handpiece is configured to vibrate a distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece. - View Dependent Claims (18, 19, 20)
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21. A phacoemulsification system, comprising:
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a phacoemulsification handpiece having a horn with at least one notch carved out of a side of an outer surface of the horn, wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn; one or more piezoelectric crystals; a needle having an asymmetrical needle base formed with a center of mass off from a longitudinal axis of the needle, wherein the phacoemulsification handpiece is configured to vibrate a distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece. - View Dependent Claims (22, 23, 24)
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25. A phacoemulsification system, comprising:
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a phacoemulsification handpiece having a needle, a horn with at least one notch carved out of a side of an outer surface of the horn, wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn, and a piezoelectric crystal stack, wherein the phacoemulsification handpiece is configured to vibrate a distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece, wherein the control unit is configured to provide a single pulse of power to the phacoemulsification handpiece so that the distal end of the needle substantially simultaneously vibrates in both the effective longitudinal direction and the effective transverse direction.
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26. A phacoemulsification system, comprising:
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a phacoemulsification handpiece having a needle, a horn with at least one notch carved out of a side of an outer surface of the horn, wherein the at least one notch moves a center of mass of the horn offset from a central longitudinal axis of the horn and the outer surface of the horn does not intersect with the longitudinal axis of the horn, and a piezoelectric crystal stack, wherein the phacoemulsification handpiece is configured to vibrate a distal end of the needle in both an effective transverse direction and an effective longitudinal direction when power, having a single effective operating frequency, is applied to the phacoemulsification handpiece; and a control unit operatively coupled to the phacoemulsification handpiece and configured to provide power to the phacoemulsification handpiece, wherein the control unit is configured to provide power at the single effective operating frequency to the phacoemulsification handpiece so that the distal end of the needle substantially simultaneously vibrates in both the effective longitudinal direction and the effective transverse direction.
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Specification