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.
Claims12
A system for controlling infusion pressure during an intraocular surgical procedure, the system comprising:
- a data receival unit adapted to receive:
- systemic blood pressure;
- and
- infusion pressure;
- a computational unit adapted to:
- determine an estimated retinal artery blood pressure based on the received systemic blood pressure;
- and
- determine an estimated critical closing pressure based on the estimated retinal artery blood pressure;
- and
- a logic unit adapted to:
- compare infusion pressure with the estimated critical closure pressure;
- and
- trigger an alarm when the infusion pressure reaches a selected pressure relative to the estimated critical closing pressure.
A system, comprising:
- memory that stores at least one of systemic blood pressure data, estimated central retinal artery blood pressure data, infusion pressure data, and estimated critical closing pressure data;
- and
- one or more processors operable to:
- determine an infusion pressure of a patient's eye;
- determine an estimate of a patient's central retinal artery blood pressure;
- and
- determine an estimated critical closing pressure of a central retinal artery of the eye based on the estimated central retinal artery blood pressure.
Dependencies are inferred from the claim text.