Phacoemulsification hook tip
First Claim
1. A cutting tip and a phacoemulsification surgical handpiece, comprising:
- a phacoemulsification surgical handpiece comprising a horn configured to torsionally vibrate a cutting tip at a rate of approximately 10 to 60 kHz; and
a cutting tip comprising;
a first portion comprising a straight shaft comprising a proximal portion of a cutting tip length secured in the horn of the surgical handpiece, wherein the straight shaft has a shaft centerline,a distal portion, comprising;
a second portion forming an angle with the first portion;
a third portion forming a hook; and
a distal end with a beveled end; and
an aspiration lumen through at least the first portion, wherein the aspiration lumen has an inner diameter between 0.001 inches and 0.09 inches;
wherein the cutting tip has a diameter in a range of approximately 0.5 mm to 2 mm;
wherein the proximal portion of the cutting tip length is constrained by the horn of the surgical handpiece such that the shaft centerline of the proximal portion is aligned with an axis of rotation of the horn;
wherein the first portion, second portion, third portion and distal end are comprised in a single piece;
wherein the second portion, third portion, and distal end together have an axis of rotation relative to the shaft that is substantially aligned with an extended shaft centerline when the proximal portion of the cutting tip length is torsionally vibrated by the phacoemuslfication surgical handpiece at the rate of approximately 10 to 60 kHz, on an arc with an axis of rotation that is aligned with the shaft centerline at the proximal portion.
3 Assignments
0 Petitions
Accused Products
Abstract
In various embodiments, a phacoemulsification cutting tip with a straight shaft and an angled portion off of the straight shaft may include a hook on the angled portion to move an axis of rotation of the cutting tip closer to alignment with an extended centerline of the shaft. The cutting tip may be configured to torsionally rotate back and forth on an axis perpendicular to a centerline of the shaft (e.g., rotation around a y-axis). In some embodiments, lateral vibrations (e.g., side to side along an x-axis or z-axis perpendicular to the y-axis) that result from torsional rotation around the y-axis in a cutting tip without the hook may be reduced through use of the hook to balance the otherwise eccentrically weighted hook.
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Citations
14 Claims
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1. A cutting tip and a phacoemulsification surgical handpiece, comprising:
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a phacoemulsification surgical handpiece comprising a horn configured to torsionally vibrate a cutting tip at a rate of approximately 10 to 60 kHz; and a cutting tip comprising; a first portion comprising a straight shaft comprising a proximal portion of a cutting tip length secured in the horn of the surgical handpiece, wherein the straight shaft has a shaft centerline, a distal portion, comprising; a second portion forming an angle with the first portion; a third portion forming a hook; and a distal end with a beveled end; and an aspiration lumen through at least the first portion, wherein the aspiration lumen has an inner diameter between 0.001 inches and 0.09 inches; wherein the cutting tip has a diameter in a range of approximately 0.5 mm to 2 mm; wherein the proximal portion of the cutting tip length is constrained by the horn of the surgical handpiece such that the shaft centerline of the proximal portion is aligned with an axis of rotation of the horn; wherein the first portion, second portion, third portion and distal end are comprised in a single piece; wherein the second portion, third portion, and distal end together have an axis of rotation relative to the shaft that is substantially aligned with an extended shaft centerline when the proximal portion of the cutting tip length is torsionally vibrated by the phacoemuslfication surgical handpiece at the rate of approximately 10 to 60 kHz, on an arc with an axis of rotation that is aligned with the shaft centerline at the proximal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cutting tip and a phacoemulsification surgical handpiece, comprising:
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a phacoemulsification surgical handpiece comprising a horn configured to torsionally vibrate a cutting tip at a rate of approximately 10 to 60 kHz; and a cutting tip comprising; a first portion comprising a straight shaft comprising a proximal portion of a cutting tip length secured in the horn of the surgical handpiece, wherein the straight shaft has a shaft centerline; a second portion forming an angle with the first portion; a third portion forming a hook; and a distal end with a beveled end; wherein the cutting tip has a diameter in a range of approximately 0.5 mm to 2 mm; wherein the proximal portion of the cutting tip length is constrained by the horn of the surgical handpiece such that the shaft centerline of the proximal portion is aligned with an axis of rotation of the horn; wherein the hook includes a curve that acts as a counterweight; wherein the first portion, second portion, third portion and distal end are comprised in a single piece; and an aspiration lumen through at least the first portion, wherein the aspiration lumen has an inner diameter between 0.001 inches and 0.09 inches; wherein the second portion, third portion, and distal end together have an axis of rotation relative to the shaft that is substantially aligned with the extended shaft centerline when the proximal portion of the cutting tip length is torsionally vibrated by the phacoemuslfication surgical handpiece at the rate of approximately 10 to 60 kHz, on an arc with an axis of rotation that is aligned with the shaft centerline at the proximal portion. - View Dependent Claims (13, 14)
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Specification