Abstract:
The invention is an improved phacoemulsification probe drive circuit for supplying electrical power to an ultrasonic transducer. The drive circuit has a power control loop (1412) and a frequency control loop (1413). The power control loop (1412) has a variable gain amplifier (1416) whose output is an input to a power amplifier (1417). After the power amplifier amplifies power, power is delivered to a transformer (1436) and, thereafter, to a transducer (1439). The voltage and current applied to the primary of the transformer are sensed to generate a signal proportional to the power (real or apparent), and the result is compared against a power command originating from a foot pedal. Once compared, the result of this comparison is sent to a first controller which acts upon the information by sending a corrective signal to the variable gain amplifier.
Abstract:
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus and a user interface (3) connected to the data communications bus. The user interface (3) provides information to the user and receives information from the user which is representative of microsurgical instruments. The system also includes surgical modules (13) connected to, and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules (13) are also connected to the data communications bus. The data communications bus provides communication of data representative of operating parameters between the user interface (3) and the surgical modules (13).
Abstract:
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus (101), and a user interface connected to the data communications bus. The user interface provides information to the user and receives information from the user which is representative of operating parameters of the microsurgical instruments. The system also includes surgical modules (13) connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules are also connected to the data communications bus.
Abstract:
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus and a user interface (3) connected to the data communications bus. The user interface (3) provides information to the user and receives information from the user which is representative of operating parameters of the microsurgical instruments. The system also includes surgical modules (13) connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules (13) are also connected to the data communications bus. The data communications bus provides communication of data representative of the operating parameters between the user interface and the surgical modules.
Abstract:
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communication bus and a user interface (3) connected to the data communication bus. The user interface (3) provides information to the user and receives information from the user which is representative of microsurgical instruments. The system also includes surgical modules (13) connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules (13) are also connected to the data communication bus. The data communication bus provides communication of data representative of operating parameters between the user interface (3) and the surgical modules (13).
Abstract:
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus (101) and a user interface connected to the data communications bus. The user interface provides information to the user and receives information from the user, which is representative of operating parameters of the surgical instruments. The system also includes surgical modules (13) connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules are also connected to the data communications bus.
Abstract:
A foot control assembly (15) for a microsurgical system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus and a user interface connected to the data communications bus. The information from the user is representative of operating parameters of the microsurgical instruments. The system also includes surgical modules (13) connected and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules are also connected to the data communications bus.
Abstract:
The invention concerns a phacoemulsification probe having an acoustic transducer (3) which vibrates a needle (94), and further comprising a reflector (43) for reflecting energy toward the needle which would otherwise not be transmitted to the needle, and means (46, 66) for maintaining a constant pressure between the transducer (3) and the electrodes (50) which supply power to it.
Abstract:
This invention is a method of identifying whether a particular fluid collection cassette (10) is designated to have a particular use, such as posterior surgery or anterior surgery. A reflux bulb (26) attached to a fluid collection cassette has a material disposed on or in said reflux bulb in a predetermined location. A sensor attached to the housing senses the existence, or non-existence of the material and sends a signal to a controller.
Abstract:
This invention is a system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communication bus and a user interface (3) connected to the data communication bus. The user interface (3) provides information to the user and receives information from the user which is representative of microsurgical instruments. The system also includes surgical modules (13) connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules (13) are also connected to the data communication bus. The data communication bus provides communication of data representative of operating parameters between the user interface and the surgical modules.