# US 10,945,885 B2 · Intraocular device for dual incisions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,945,885 B2 - Document ID: US10945885B2 - Status: Granted - Kind: B2 - Application number: 15/701,306 - Filed: 2017-09-11 - Published: 2017-12-28 - Granted: 2021-03-16 - Earliest claimed: 2012-04-24 - Assignees: The Regents of the University of Colorado, a body corporate - Applicants: The Regents of the University of Colorado, A Body Corporate - Inventors: Malik Y. Kahook - Web page: https://patentgrep.com/patent/US10945885B2 ## CPC - A61F 9/0133: {Knives or scalpels specially adapted therefor} - A61B 17/3209: Incision instruments - A61F 9/00736: {Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments (A61F9/008 takes precedence)} - A61F 9/00781: {Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment (drainage implants in general A61M27/002)} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A microsurgical device and methods of its use can be used for treatment of various conditions including eye diseases, such as glaucoma, using minimally invasive surgical techniques. A dual-blade device can be used for cutting the trabecular meshwork (“TM”) in the eye. The device tip provides entry into the Schlemm's canal via its size (i.e., for example, 0.2-0.3 mm width) and configuration where a ramp elevates the TM away from the outer wall of the Schlemm's canal and guides the TM to first and second lateral elements for creating first and second incisions through the TM. The dimensions and configuration of the blade is such that an entire strip of TM is removed without leaving TM leaflets behind and without causing collateral damage to adjacent tissues. ## Claims ### Claim 1 An ophthalmic device comprising: a platform comprising: a tip at a distal side of the platform; a ramp extending from the distal side to a proximal side of the platform, wherein the ramp increases from a distal thickness at the distal side to a proximal thickness, greater than the distal thickness, at the proximal side; a first side extending from the proximal side to the distal side; and a second side extending from the proximal side to the distal side, wherein outer surfaces of proximal segments of the first side and the second side are parallel to each other and distal segments of the first side and the second side intersect at the tip; and first and second lateral cutting blades extending from the proximal side of the platform, wherein the proximal segments of the first side and the second side forming an obtuse angle with the first lateral cutting blade and the second lateral cutting blade, respectively. ### Claim 2 (depends on 1) The ophthalmic device of claim 1, wherein the first side and the second side each connect to a top surface of the platform with a bevel. ### Claim 3 (depends on 1) The ophthalmic device of claim 1, wherein the ramp increases from a distal width at the distal side to a proximal width, greater than the distal width, at the proximal side. ### Claim 4 (depends on 1) The ophthalmic device of claim 1, wherein a maximum width across the first and second lateral cutting blades is not less than a maximum width across the ramp. ### Claim 5 (depends on 1) The ophthalmic device of claim 1, wherein the first and second lateral cutting blades are separated by a gap defined by a wall between the first and second lateral cutting blades and on a proximal side of the ramp. ### Claim 6 (depends on 1) The ophthalmic device of claim 1, wherein the platform further comprises a bottom surface, opposite the ramp, that is planar or concave. ### Claim 7 (depends on 6) The ophthalmic device of claim 6, wherein the bottom surface has a maximum width that is less than a maximum width between the first side and the second side. ### Claim 8 (depends on 1) The ophthalmic device of claim 1, wherein the first and second lateral cutting blades are parallel to each other and in line with the outer surfaces of the proximal segments of the first and second sides. ### Claim 9 An ophthalmic device comprising: a platform comprising: a top surface; a bottom surface; a first side; and a second side, wherein an outer surface of the second side is parallel to an outer surface of the first side; wherein a distal section of the platform has a variable thickness between the top and bottom surfaces and a variable width between the first and second sides; and wherein a proximal section of the platform has a variable thickness between the top and bottom surfaces and a constant width between the first and second sides; and first and second lateral cutting blades extending from the proximal section of the platform, wherein the platform is configured to be disposed distally to a distal end of a tool shaft, and wherein the outer surfaces of the first side and the second side forming an obtuse angle with the first lateral cutting blade and the second lateral cutting blade, respectively. ### Claim 10 (depends on 9) The ophthalmic device of claim 9, wherein the first side and the second side each connect to the top surface with a bevel. ### Claim 11 (depends on 9) The ophthalmic device of claim 9, wherein a maximum width across the first and second lateral cutting blades is not less than a maximum width across the first and second sides. ### Claim 12 (depends on 9) The ophthalmic device of claim 9, wherein the top surface is planar. ### Claim 13 (depends on 9) The ophthalmic device of claim 9, wherein the bottom surface is concave. ### Claim 14 (depends on 9) The ophthalmic device of claim 9, wherein at least a portion of the first side and at least a portion of the second side are each planar. ### Claim 15 (depends on 9) The ophthalmic device of claim 9, wherein the bottom surface has a maximum width that is less than a maximum width between the first side and the second side. ### Claim 16 A device for incising a trabecular meshwork, the device comprising: a platform comprising: a distal section comprising a tip; and a proximal section; and first and second lateral cutting blades extending from the proximal section; wherein the distal section defines a distal thickness and a distal width that each increase from the tip towards the proximal section to elevate the trabecular meshwork from Schlemm's Canal; and wherein the proximal section defines a proximal thickness that increases from the distal section towards the first and second lateral cutting blades to further elevate the trabecular meshwork from Schlemm's Canal and a proximal width that is constant along the proximal section, wherein outer side walls of the proximal section are parallel to each other, and wherein the outer side walls of the proximal section forming an obtuse angle with the first and second lateral cutting blades. ### Claim 17 (depends on 16) The device of claim 16, wherein the proximal width is defined by a first side and a second side of the platform, wherein at least a portion of the first side and at least a portion of the second side are planar and parallel to each other. ### Claim 18 (depends on 17) The device of claim 17, wherein a maximum width across the first and second lateral cutting blades is not less than a maximum width across the first and second sides. ### Claim 19 (depends on 17) The device of claim 17, wherein a bottom surface of the platform has a maximum width that is less than a maximum width between the first side and the second side. ### Claim 20 (depends on 16) The device of claim 16, wherein a top surface of the platform is planar. ### Claim 21 (depends on 16) The device of claim 16, wherein a bottom surface of the platform is concave.