Progressive cavity pump cartridge with infrared temperature sensors on fluid inlet and outlet
AssigneeJohnson & Johnson Surgical Vision, Inc.
InventorAssaf Govari
Life of this patent
Estimating the term…
Abstract
A system includes a pump, an inlet sensor, an outlet sensor, and a controller. The pump is configured for pumping fluid in a phacoemulsification system. The inlet sensor is coupled with an inlet port of the pump and is configured to sense an inlet temperature of the fluid at the inlet port. The outlet sensor is coupled with an outlet port of the pump and is configured to sense an outlet temperature of the fluid at the outlet port. The controller is configured to take a responsive action based a difference between the inlet temperature and the outlet temperature crossing a defined threshold.
Claims15
A phacoemulsification system, comprising:
- an irrigation pump and an aspiration pump, each of the irrigation pump and the aspiration pump configured to pump a fluid in a fluidics system of the phacoemulsification system, wherein the irrigation pump and the aspiration pump are configured to maintain an intraocular pressure within an eye of a patient;
- an inlet sensor, which is positioned within an inlet port of a surgical cartridge of the fluidics system and is configured to sense a first temperature of the fluid passing through the inlet port, wherein the surgical cartridge comprises at least a portion of one of the irrigation pump or the aspiration pump;
- an outlet sensor, which is positioned within an outlet port of the surgical cartridge and is configured to sense a second temperature of the fluid passing through the outlet port;
- and
- a controller coupled with the irrigation pump and the aspiration pump, wherein the controller is configured to:
- calculate a difference in a temperature of the fluid between the first temperature of the fluid and the second temperature of the fluid,
- estimate, based on the difference in the temperature of the fluid calculated, an estimated temperature of at least one of the irrigation pump or the aspiration pump, and
- take a responsive action to control at least one of the irrigation pump or the aspiration pump when the estimated temperature crosses a defined threshold.
A method implemented in a phacoemulsification system, the method comprising:
- sensing, with an inlet sensor positioned within an inlet port of a surgical cartridge, a first temperature of a fluid passing through the inlet port in a fluidics system of the phacoemulsification system;
- wherein the surgical cartridge comprises at least a portion of one of an irrigation pump or an aspiration pump;
- and wherein the irrigation pump and the aspiration pump are configured to maintain an intraocular pressure within an eye of a patient;
- sensing, with an outlet sensor positioned within an outlet port of the surgical cartridge, a second temperature of the fluid passing through the outlet port;
- calculating a difference in a temperature of the fluid between the first temperature of the fluid and the second temperature of the fluid,
- estimating, based on the difference in the temperature of the fluid calculated, an estimated temperature of at least one of the irrigation pump or the aspiration pump;
- and
- taking a responsive action to control at least one of the irrigation pump or the aspiration pump when the estimated temperature crosses a defined threshold.
Dependencies are inferred from the claim text.