US 12,343,290 B2
Ophthalmic incisional procedure instrument and method
Christopher J Pole, Overland Park, KS (US); and David D Scott, St. Louis Park, MN (US)
Filed by EYEMDENGINEERING LLC, Leawood, KS (US)
Filed on Jan. 27, 2023, as Appl. No. 18/102,179.
Application 18/102,179 is a continuation in part of application No. 17/028,660, filed on Sep. 22, 2020, abandoned.
Application 17/028,660 is a continuation in part of application No. 15/899,784, filed on Feb. 20, 2018, granted, now 10,779,990, issued on Sep. 22, 2020.
Claims priority of provisional application 62/460,660, filed on Feb. 17, 2017.
Prior Publication US 2023/0165720 A1, Jun. 1, 2023
Int. Cl. A61F 9/01 (2006.01); A61F 9/013 (2006.01)
CPC A61F 9/0133 (2013.01) 17 Claims
OG exemplary drawing
 
1. An ophthalmic incisional instrument for making limbal relaxing incisions (LRIs) on a patient's eye having a sclera, a cornea, and a corneal limbus, the instrument comprising:
a docking piece having proximal and distal ends;
said docking piece proximal end configured for placement on the sclera of said patient's eye;
a cutting piece having proximal and distal ends and a rotational axis extending between said cutting piece ends;
said cutting piece configured for insertion within said docking piece and for rotation relative to said docking piece about said rotational axis in an assembled configuration of the instrument;
said cutting piece mounting two cutting blades, each cutting blade configured for extending into said patient's eye in said assembled configuration;
a guide template having proximal and distal ends;
said guide template proximal end configured for attachment to said docking piece distal end in said assembled configuration;
said guide template distal end comprising raised stoppers configured for providing lateral, arcuate stops for said cutting piece in said assembled configuration preventing rotation of said cutting piece beyond desired LRI locations;
said docking piece further comprising a step portion configured for providing a mechanical stop for said cutting piece in said assembled configuration preventing further extension of said cutting blades into said patient's eye beyond a desired LRI depth of cut;
said docking piece further comprising a suction chamber open at said docking piece proximal end;
wherein said docking piece is configured for releasable attachment to the sclera of said patient's eye via sub-atmospheric pressure in said suction chamber; and
said cutting blades configured for forming arcuate LRIs in said patient's eye coaxial to said rotational axis
wherein said cutting piece further comprises an open center accommodating visualization of said LRIs, and
wherein said docking piece further comprises axial alignment markings; and
said guide template further comprises reference markings for alignment in relation to said docking piece.