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Phacoemulsification hook tip

  • US 9,233,021 B2
  • Filed: 10/24/2013
  • Issued: 01/12/2016
  • Est. Priority Date: 07/01/2009
  • Status: Active Grant
First Claim
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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.

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