US 12,465,523 B2
Surgical system procedure for treatment of the trabecular meshwork and Schlemm's canal using a femtosecond laser
Guy Holland, San Juan Capistrano, CA (US); Tibor Juhasz, San Clemente, CA (US); Wesley W. Lummis, Rancho Santa Margarita, CA (US); Eric R. Mikula, Aliso Viejo, CA (US); Ferenc Raksi, Mission Viejo, CA (US); Manu Sharma, Ladera Ranch, CA (US); and Carlos G. Suarez, Tustin, CA (US)
Assigned to ViaLase, Inc., Aliso Viejo, CA (US)
Filed by ViaLase, Inc., Aliso Viejo, CA (US)
Filed on Dec. 29, 2021, as Appl. No. 17/565,327.
Application 17/565,327 is a division of application No. 16/674,850, filed on Nov. 5, 2019, granted, now 11,246,754.
Application 16/674,850 is a continuation in part of application No. 16/125,588, filed on Sep. 7, 2018, granted, now 11,110,006.
Application 16/674,850 is a continuation in part of application No. 16/036,833, filed on Jul. 16, 2018, granted, now 10,821,023.
Prior Publication US 2022/0117787 A1, Apr. 21, 2022
Int. Cl. A61F 9/008 (2006.01)
CPC A61F 9/00825 (2013.01) [A61F 2009/00855 (2013.01); A61F 2009/00868 (2013.01); A61F 2009/00891 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of treating a target volume of ocular tissue of an irido-corneal angle of an eye with a laser beam having a direction of propagation toward the target volume of ocular tissue, the method comprising:
forming an opening that extends from an interior of a Schlemm's canal to an anterior chamber by:
initially photodisrupting tissue at an initial depth corresponding to a distal extent of the target volume of ocular tissue, which distal extent is positioned at least partially within the Schlemm's canal, by placing a focus of the laser beam at the initial depth and scanning the focus through a treatment plane; and
subsequently photodisrupting tissue at a plurality of subsequent depths between the distal extent of the target volume of ocular tissue and a proximal extent of the target volume of ocular tissue, which proximal extent is positioned at least partially within an anterior chamber by: a) moving the focus in the direction opposite the direction of propagation of the laser beam to a first subsequent depth and scanning the focus through a treatment plane at the first subsequent depth, and b) repeating step a) for each of the remaining plurality of subsequent depths including a last depth corresponding to the proximal extent; and
after forming the opening that extends from the interior of the Schlemm's canal to the anterior chamber, clearing tissue debris or bubbles from within the opening by:
initially photodisrupting tissue debris or bubbles at the last depth by scanning the focus through a treatment plane at the last depth; and
subsequently photodisrupting tissue debris or bubbles at each of the remaining plurality of subsequent depths and the initial depth by: c) moving the focus of the laser in the direction of propagation of the laser to beam to a first remaining subsequent depth and scanning the focus through a treatment plane at the first remaining subsequent depth, and d) repeating step c) for each of the remaining subsequent depths and the initial depth.