Corneal aspiration cannula and method of using
AssigneeMichiel S. Kritzinger
InventorsMichael S. Kritzinger, Stephen A. Updegraff
Life of this patent
Estimating the term…
Abstract
An aspiration cannula is used in tectonic lamellar keratoplasty. The cannula is hand manipulatable and aspirates irrigation fluid and repositions a corneal cap or flap during corneal surgery. The cannula comprises a hand manipulatable elongated tube having an inlet end with a plurality of ports spaced apart along the length of the tube for aspirating irrigation fluid around a corneal incision interface and an outlet end for disposing the fluid.
Claims15
A cannula for aspirating irrigation fluid and repositioning a corneal cap or flap during corneal surgery comprising:
- a suction source for aspirating irrigation fluid,
- a hand manipulatable elongated suction tube having an outlet end connected to said suction source and an inlet end for aspirating irrigation fluid, said tube is angled between the ends and has a plurality of ports spaced apart along the length of said tube between the inlet end and the tube angle for aspirating irrigation fluid by said suction source, said ports sized for aspiration of epithelium, debris and irrigation fluid during corneal surgery, said tube length having said ports for accurately aligning and repositioning the cap or flap to its correct anatomical position.
A cannula for aspirating irrigation fluid and repositioning a corneal cap or flap during corneal surgery comprising:
- a suction source for aspirating irrigation fluid,
- a hand manipulatable, elongated and angled tube having an outlet end connected to said suction source and an inlet end for aspirating irrigation fluid, said tube is angled between the ends and has four aspirating side ports radially spaced along the length of said tube between the inlet end and the tube angle for aspirating irrigation fluid from different directions by said suction source, two of said side ports being located approximately 2.5 mm from an aspirating end port situated at the tip of said inlet end and the other two side ports being located approximately 5.0 mm from said end port of said inlet end.
Dependencies are inferred from the claim text.