Needle interface boot for ultrasonic surgical instrument
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United States of America Patent
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Aug 13, 1991
Grant Date -
N/A
app pub date -
Oct 30, 1989
filing date -
Oct 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A needle interface boot for use in an ultrasonic ophthalmic surgical instrument of the type incorporating coaxial irrigation and aspiration functions which comprises a conically-shaped hollow instrument. The boot is made from a compliant silicone or plastic-type material and is positioned within the irrigation channel surrounding the interface or connection between the vibratory transmissive member or resonator and the needle probe to prevent irrigation fluid from contacting the flat projecting surfaces of this interface and, thus, reduces objectionable cavitation and bubble formation within the irrigation fluid to be delivered to the operative site during use of such a surgical instrument.
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