Corneal vacuum centering device
AssigneeKera Vision Inc.
InventorsThomas A. Silvestrini, Robert A. Proudfoot, John A. Scholl
Life of this patent
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Abstract
This invention is a vacuum centering device which may be used in conjunction with other surgical instruments in opthomological surgery. The device provides an improved interface with the eye by way of features that reduce interference with a patient's eyelids interocular pressure and/or the propensity to rotate. These features may include a flared outer wall portion which may either be curved or straight for a section, providing a low profile vacuum chamber, and/or the use of a non-circular outer sealing region potentially producing a saddle-shaped outer periphery providing for potentially increased vacuum exposure to the eye and a contour resistant to rotation.
Claims32
A corneal vacuum centering device comprising:
- an inner wall having a first sealing region for contacting an eye;
- and
- an outer wall having a second sealing for contacting the eye, said outer wall extending outwardly from said inner wall such that said that said inner wall and said outer wall form a sealed chamber when said first and second sealing regions contact eye, said outer wall having an exterior surface, at least a portion of said exterior surface having a flared profile adapted to fit at least partially beneath eyelid tissue when the device is on the eye.
A corneal vacuum centering device comprising:
- a main body member having a proximal end, a distal end, a central axis, and a sealing chamber located at said distal end;
- said sealing chamber having an inner sealing region for contacting the eye, a non-circular outer sealing region when viewed along said central axis for contacting the eye, and a contiguous wall therebetween.
Dependencies are inferred from the claim text.