Patent ID: 6149621
Filing Date: 2000-11-21
Classification: A61M,F04B

Abstract:
An irrigation-apparatus for use in eye surgery which sucks in supplied irrigating fluid together with a residue in an eye undergoing surgery, the irrigating fluid together with the residue defined as a liquefied residue, said aspirating apparatus comprising:a flexible aspirating tube through which the liquefied residue is sucked;a peristaltic pump which has a plurality of rollers and a tube receptacle and which sucks in the liquefied residue in the eye by generating aspirating pressure in said aspirating tube by rotating said rollers to compress said aspirating tube to collapse against said tube receptacle as said rollers rotate; andflattening means for flattening a portion of said aspirating tube while securing an aspirating path through said flattened portion in said aspirating tube to allow the liquefied residue to be sucked through said flattened portion during operation of said peristaltic pump, said flattening means disposed near a point where each of said rollers and said tube receptacle start compressing said aspirating tube to collapse; andwherein said flattening means is adapted to operate simultaneously while said aspirating tube is compressed to collapse by said rollers and said tube receptacle during operation of said peristaltic pump.