Intraocular lens insertion plunger with low stimulus soft tip
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United States of America Patent
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N/A
Issued Date -
Jan 4, 2007
app pub date -
Jul 1, 2005
filing date -
Jul 1, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An intraocular lens (IOL) insertion apparatus for implanting IOLs through smaller incisions. The insertion apparatus includes an insertion cartridge that receives the IOL and cooperates with a handpiece. The cartridge includes a longitudinal lumen from a loading chamber to an open distal mouth that gradually narrows in dimension. A push rod having an extremely soft tip thereon urges the IOL through the cartridge and from the open distal mouth. The soft tip is made of low-stimulus material having a minimum ultimate elongation of 400%. Because of the extremely soft material of the tip, the outside diameter of the open distal mouth can be reduced to no more than 2.0 mm, enabling passage through incisions of 2.2 mm or less. The soft tip may be a thermoplastic elastomer having a relatively high elongation and relatively low modulus at elongations of 100-300%.
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