Emulsification devices and methods for crystalline lens removal
This disclosure relates to thermal fluid emulsification systems and methods for cataract removal. The thermal fluid emulsification systems can deliver heated fluid to the crystalline lens within the capsular bag of the eye, resulting in the emulsification of the crystalline lens. The emulsified crystalline lens can be aspirated from the capsular bag of the eye. The thermal fluid emulsification systems can include tips configured to localize heat to avoid unintentional damage to other ocular components and cellular structures of the eye.
1 . A device for removing a lens from a capsular bag of an eye, the device comprising:
a distal tip configured to be inserted into the eye;
a heater unit;
a first fluid line configured to direct a first fluid portion to the distal tip for delivery into the capsular bag;
a second fluid line configured to direct a second fluid portion to the distal tip for delivery into the capsular bag, wherein the heater unit is configured to heat the second fluid portion;
a third fluid line that splits from the second fluid line downstream of the heater unit to direct the second fluid portion away from the distal tip;
a valve unit comprising a first configuration and a second configuration;
wherein, in the first configuration, the valve unit is configured to permit the first fluid portion to flow through the first fluid line to the distal tip, impede the second fluid portion from flowing through the second fluid line to the distal tip, and permit the second fluid portion to flow through the third fluid line away from the distal tip; and
wherein, in the second configuration, the valve unit is configured to impede the first fluid portion from flowing through the first fluid line to the distal tip, permit the second fluid portion to flow through the second fluid line to the distal tip, and impede the second fluid portion from flowing through the third fluid line away from the distal tip.
2 . The device of claim 1 , further comprising an aspiration line configured to direct lens material aspirated through the distal tip away from the distal tip.
3 . The device of claim 1 , further comprising a coolant delivery line and a coolant return line, the coolant delivery line configured to direct a third fluid portion to the distal tip to circulate through the distal tip to reduce a temperature of a periphery of the distal tip, and the coolant return line configured to direct the third fluid portion away from the distal tip.
4 . The device of claim 3 , wherein the coolant delivery line splits from the first fluid line.