Phacoemulsification tip type detection
AssigneeJohnson & Johnson Surgical Vision, Inc.
InventorsVadim Gliner, Adam Walter Toner, Assaf Govari, Andres Claudio Altmann
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for detecting the actual tip or tip type being used on a handpiece of an ophthalmic instrument. By detecting the tip type being used, the correct system settings can be used during the surgical procedure, and the surgical system may operate safely.
Claims19
A method for detecting the tip type for the tip of a handpiece of an ophthalmic instrument comprising:
- placing a calibration chamber over the tip of the handpiece;
- priming the tip by irrigating the tip and aspirating the tip;
- measuring the irrigation pressure and the aspiration pressure during the priming of the tip;
- and
- by a processor:
- calculating a value corresponding to the difference between the aspiration pressure and the irrigation pressure;
- and
- analyzing the calculated value against one or more predetermined values for tip types, to determine the tip type.
A method for detecting the tip type for the tip of a handpiece of an ophthalmic instrument comprising:
- estimating the resonance frequency of a needle in the tip of the handpiece;
- and
- identifying the type of the tip based on the estimated resonance frequency of the needle.
A system for detecting the tip type for the tip of a handpiece of an ophthalmic instrument comprising:
- at least one first sensor in communication with an irrigation line of the handpiece for measuring irrigation pressure in the irrigation line during priming of the tip of the handpiece;
- at least one second sensor in communication with an aspiration line of the handpiece for measuring aspiration pressure in the aspiration line during priming of the tip of the handpiece;
- and
- a processor in communication with the at least one first sensor and the at least one second sensor, the processor programmed to:
- calculate a value corresponding to the difference between the aspiration pressure and the irrigation pressure;
- and
- analyze the calculated value against one or more predetermined values for tip types, to determine the tip type.
A system for detecting the tip type for the tip of a handpiece of an ophthalmic instrument comprising:
- an ultrasonic transducer in the handpiece for vibrating a needle in the tip;
- and
- a processor programmed to:
- cause the ultrasonic transducer to vibrate the needle at an estimated resonance frequency of the needle;
- and
- identify the type of the tip based on the estimated resonance frequency of the needle.
Dependencies are inferred from the claim text.