Infusion pressure control using blood pressure
AssigneeAlcon Research, Ltd.
InventorSteven T. Charles
Life of this patent
Estimating the term…
Abstract
Methods, systems, and software for controlling infusion pressure, such as during a medical procedure, using systemic blood pressure are described. Systemic blood pressure, such as brachial arm blood pressure or radial artery blood pressure, may be used to estimate central retinal artery blood pressure to estimate critical closing pressure. Further, the disclosure relates to controlling infusion pressure to prevent an increase in intraocular pressure above the estimated critical closing pressure when such is not desired, and, when such is desired, using systemic blood pressure and infusion pressure to control an intentional increase in intraocular pressure above the estimated critical closing pressure to stop intraocular bleeding.
Claims7
A method for controlling infusion pressure during an intraocular surgical procedure, the method comprising:
- determining an infusion pressure of a patient's eye with a first pressure determining device;
- determining a blood pressure indicative of a patient's central retinal artery blood pressure with a second pressure determining device;
- determining, with a processor, an estimated critical closing pressure of a central retinal artery of the eye based on the blood pressure indicative of a patient's central retinal artery blood pressure;
- comparing, with the processor, the infusion pressure to the estimated critical closing pressure;
- and
- triggering an alarm when the infusion pressure reaches a selected pressure relative to the estimated critical closing pressure
A method for controlling infusion pressure during an intraocular surgical procedure, the method comprising:
- determining an infusion pressure of a patient's eye with a first pressure determining device;
- determining a blood pressure indicative of a patient's central retinal artery blood pressure with a second pressure determining device;
- determining, with a processor, an estimated critical closing pressure of a central retinal artery of the eye based on the blood pressure indicative of a patient's central retinal artery blood pressure;
- and
- increasing the infusion pressure above the estimated critical closing pressure with a fluid flow device to stop intraocular bleeding.
Dependencies are inferred from the claim text.