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:
A system for controlling a plurality of ophthalmic microsurgical instruments is disclosed. Particularly, the present invention includes a handpiece (1810) for activating a surgical instrument (i.e., such as scissors) connected to the handpiece. The handpiece (1810) includes a housing (1812) and a linear activator (1836) operatively retained within the housing. A nosepiece (1814) is mounted to one end of the housing and is adapted for correction of a linearly actuated surgical instrument. The nosepiece (1814) is fixed to the linear activator (1836) in a preselected calibrated position relative to the longitudinal axis of the linear actuator.
Abstract:
An apparatus for destroying residual lens epithelial cells. The apparatus includes a probe (10, 210, 310, 410, 510, 610, 710) configured for insertion into the eye between the iris and the lens capsule. The probe is further configured to deliver energy therefrom to residual lens epithelial cells within the lens capsule in order to destroy them. The distal end (14, 22, 322, 520, 620, 720) of the probe is configured to allow a surgeon using the probe to reach all areas within the lens capsule to ensure that no epithelial cells remain alive after use of the probe.
Abstract:
A system for controlling a plurality of ophthalmic microsurgical instruments is disclosed. Particularly, an endo-illuminator system (1000) for such ophthalmic systems is described for illuminating a posterior portion of a patient's eye during ophthalmic surgery. The novel endo-illuminator system (1000) includes a lamp system (1004), providing a high color temperature light which is shieleded for use with plastic lamp connections without melting.
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 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.
Abstract:
A system for controlling a plurality of ophthalmic microsurgical instruments is disclosed. Particularly, the present invention includes an ophthalmic handpiece (19), such as an intraocular surgical scissors or forceps, which is electrically isolated from the electrical power source for controlling electrical hardware by a transformer. In a preferred embodiment, the handpiece (19) is removably attachable to the electric control handpiece and is interchangeable with other ophthalmic handpieces. Furthermore, an apparatus to detect the presence of the interchangeable handpiece when it is connected to the controlling electric hardware, is provided.