Systems and methods for measuring fluid flow in a venturi based system
AssigneeJohnson & Johnson Surgical Vision, Inc.
InventorsDeep Mehta, Dung T. Ma, Sandra H. Keh
Life of this patent
Estimating the term…
Abstract
Variables of a surgical system are detected or received via one or more sensors to predict an intraocular pressure (IOP) and/or determine an IOP in real time during a surgical procedure. A notification to a surgeon or a target IOP is set and maintained as determined by Static IOP, dynamic IOP, and/or a total IOP combining both static and dynamic IOP of the anterior chamber of a patient's eye. Information collected about various components of the system are displayed on a user interface. The system uses the collected information to calculate the static IOP and/or dynamic IOP of the system, and the total IOP may be function of the static IOP and/or dynamic IOP measurements.
Claims26
A system for varying pressure rates during phacoemulsification surgery, the system comprising:
- a surgical console having at least one system bus communicatively connected to at least one computing processor capable of accessing at least one computing memory associated with the at least one computing processor;
- a phacoemulsification surgical handpiece having at least one surgical tool at a distal end of the phacoemulsification surgical handpiece;
- a first pressure sensor communicatively connected to an aspiration line and proximate to a proximal end of the phacoemulsification surgical handpiece and exterior to the surgical console;
- and
- a second pressure sensor communicatively connected to the aspiration line and proximate to a vacuum source associated with the surgical console and exterior to the phacoemulsification surgical handpiece,
- wherein the pressure of the aspiration line is regulated in accordance with a comparison between an estimated aspiration flow calculated from the pressure measured by the first and second pressure sensors communicatively connected to the aspiration line and a predetermined aspiration pressure.
A system for varying irrigation rates during phacoemulsification surgery, the system comprising:
- a surgical console having at least one system bus communicatively connected to at least one computing processor capable of accessing at least one computing memory associated with the at least one computing processor;
- a phacoemulsification surgical handpiece having at a distal end at least one surgical tool and having near a proximal end a detachable receiver for receiving an aspiration line and an irrigation line from the surgical console;
- a first pressure sensor communicatively connected to the aspiration line and located proximate to the detachable receiver and exterior to the surgical console;
- and
- a second pressure sensor communicatively connected to the aspiration line and proximate to a vacuum source associated with the surgical console and exterior to the phacoemulsification surgical handpiece,
- wherein the pressure of the irrigation line is regulated in accordance with an estimated aspiration flow calculated from the pressure measured by the first and second pressure sensors communicatively connected to the aspiration line.
A system for varying pressure rates during phacoemulsification surgery, the system comprising:
- a surgical console having at least one system bus communicatively connected to at least one computing processor capable of accessing at least one computing memory associated with the at least one computing processor;
- a phacoemulsification surgical handpiece having at a distal end at least one surgical tool and having near a proximal end a mass air flow sensor communicatively connected to an aspiration line at a location exterior to the surgical console;
- and
- wherein the pressure of the aspiration line is regulated in accordance with a comparison between an estimated aspiration flow calculated from the pressure measured by the mass air flow sensor at the proximal end of the phacoemulsification surgical handpiece and a predetermined aspiration pressure.
Dependencies are inferred from the claim text.