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Combined ultrasonic emulsifier and mechanical cutter for surgery

  • US 4,428,748 A
  • Filed: 04/09/1980
  • Issued: 01/31/1984
  • Est. Priority Date: 04/09/1980
  • Status: Expired due to Term
First Claim
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1. An ophthalmic medical cutting instrument comprising a handpiece, an outer tube means, an inner tube means coaxially mounted in said outer tube means, a remote connected ultrasonic generator, an ultrasonic motor connected to said ultrasonic generator means and mounted in said handpiece producing signals in a frequency range above 20,000 cycles per second in and through the handpiece for driving said outer tube means for vibratory fragmentation of eye tissue, a separate drive means connected to said inner tube means and mounted in said handpiece for reciprocably driving said inner tube means for shearing eye tissue, and said outer tube having a side opening so that said inner tube can shear eye tissue and said ultrasonic motor means and said separate drive means can be simultaneously or individually operated.

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