Ophthalmic tool for ab-interno removal of ophthalmic tissue and method therefor
AssigneeMor Research Applications Ltd.
InventorsAvner BELKIN, Yoram SHMUELI
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Abstract
Embodiments pertain to an ophthalmic tool for ab-interno removal of ophthalmic tissue from a human eye, the human eye including trabecular meshwork tissue and a Schlemm's canal. The tool comprises an excise device having a longitudinal centerline, and shaped and dimensioned pull-string for snug insertion into the Schlemm's canal, and has a leading nose, and a trailing knife support with a pair of spaced apart longitudinally directed knife blades mounted upright on the knife support.
Claims20
An ophthalmic tool for ab-interno removal of ophthalmic tissue from a human eye, the ophthalmic tissue including trabecular meshwork tissue and a Schlemm's canal, the ophthalmic tool comprising:
- an excise device having a longitudinal centerline, and shaped and dimensioned for snug insertion into the Schlemm's canal,
- the excise device having:
- i) a leading nose, and
- ii) a trailing knife support with a pair of spaced apart longitudinally directed knife blades mounted upright on the knife support,
- the pair of spaced apart knife blades bounding an excise device channel therebetween transverse to the longitudinal centerline,
- each knife blade having a leading knife edge.
A flexible pullstring having a pullstring free attachable to an excise device for pulling the excise device circumferentially around the Schlemm's canal in a direction of travel such that when the ophthalmic tool is operably engaged with the human eye, a pair of spaced apart knife edges of the excise device excises ophthalmic tissue including a strip of trabecular meshwork tissue,
- wherein the flexible pullstring has a non-circular cross-section that conforms with a non-circular cross-section of a longitudinally extending throughgoing bore of the excise device.
Dependencies are inferred from the claim text.