US 12,076,274 B2
Aspiration bypass control in a phacoemulsification probe
Assaf Govari, Haifa (IL); Yehuda Algawi, Binyamina (IL); Ilya Sitnitsky, Nahariya (IL); Eran Aharon, Haifa (IL); and Stanislav Katzir, Hadera (IL)
Assigned to Johnson & Johnson Surgical Vision, Inc., Irvine, CA (US)
Filed by JOHNSON & JOHNSON SURGICAL VISION, INC., Irvine, CA (US)
Filed on Jul. 13, 2020, as Appl. No. 16/927,135.
Prior Publication US 2022/0008251 A1, Jan. 13, 2022
Int. Cl. A61F 9/007 (2006.01); A61M 39/22 (2006.01); A61M 39/00 (2006.01)
CPC A61F 9/00745 (2013.01) [A61M 39/223 (2013.01); A61M 2039/0018 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/50 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A phacoemulsification system, comprising:
a phacoemulsification probe, comprising:
a needle, which is configured to be inserted into a lens capsule of an eye and to be vibrated to emulsify a lens of the eye;
an irrigation channel for flowing irrigation fluid into the lens capsule;
an aspiration channel for removing material from the lens capsule;
a bypass channel fluidly coupled with the irrigation channel and with the aspiration channel;
a single processor-controlled valve configured to control a level of fluid communication between the irrigation channel and the aspiration channel via the bypass channel; and
one or more sensors configured to measure fluid pressure at a distal portion of one or both of the irrigation channel and the aspiration channel;
a processor, which is configured to adaptively adjust the valve based on the fluid pressure measured by the one or more sensors; and
wherein, in a first position, the single processor-controlled valve blocks a flow of aspiration from the needle to the aspiration channel and diverts a flow of irrigation fluid into the aspiration channel via the bypass channel.