US 11,737,918 B2
Suction cup design for capsulotomy device
Christopher Guild Keller, El Cerrito, CA (US); and David Wong Manhin Sretavan, Tiburon, CA (US)
Assigned to CENTRICITY VISION, INC., Fremont, CA (US)
Filed by Centricity Vision, Inc., Fremont, CA (US)
Filed on Dec. 4, 2020, as Appl. No. 17/112,759.
Claims priority of provisional application 63/078,128, filed on Sep. 14, 2020.
Prior Publication US 2022/0079810 A1, Mar. 17, 2022
Int. Cl. A61F 9/007 (2006.01)
CPC A61F 9/00754 (2013.01) [A61B 2217/005 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A device for excising tissue, the device comprising:
a suction cup forming a tapered suction chamber comprising a first taper that tapers from a perimeter of the suction chamber at a first height to a center of the suction chamber at a second height less than the first height, enabling a suction force to be applied against the tissue in a first direction, and wherein the suction cup comprises a second taper that tapers continuously from the first height at the perimeter of the suction cup at a proximal end of the suction cup around a circumference of the suction cup to a third height at a distal end of the suction cup, the third height less than the first height and greater than the second height;
a stem coupled to the proximal end of the suction cup via an opening within a tapered side of the suction cup such that a neck of the stem enables flow of fluid to and from the stem into the suction cup in a second direction substantially perpendicular to the first direction, wherein the neck of the suction cup has a first diameter and a proximal end of the stem has a second diameter, and wherein the second diameter is larger than the first diameter; and
a cutting element coupled to an inner surface of the suction cup and configured to excise the tissue.