Abstract:
PROBLEM TO BE SOLVED: To provide a system for identifying a surgical cassette which needs to use no fragile tab. SOLUTION: The system comprises a surgical controlling system 10 and a cassette 22, wherein the cassette 22 has a set of identification tag 24 changing from opacity to transparency. Changing the opacity of the tag 24 enables the surgical controlling system 10 to identify easily the type of the working cassette 22. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a reliable ultrasonic hand piece which vibrates in both of a vertical maneuver and a twisting maneuver simultaneously or separately without using a piezoelectric crystal.SOLUTION: The ultrasonic handpiece includes a magnetorestrictive stack 210, a horn 220 for ultrasonic wave which is attached to the stack while including a plurality of slits 260, and an electric coil 250 which surrounds the stack adapted for receiving a drive signal. The plurality of slits have enough size and space to generate a twisting motion in the horn in response to the drive signal with a first frequency and generate a vertical motion in the horn in response to the drive signal with a second frequency.
Abstract:
PROBLEM TO BE SOLVED: To provide a reliable ultrasonic hand piece which vibrates in both of a vertical maneuver and a twisting maneuver simultaneously or separately without using a piezoelectric crystal, regarding an ultrasonic apparatus, in details, the hand piece for an ophthalmic lens ultrasound emulsification aspiration by a torsional ultrasound. SOLUTION: The ultrasonic handpiece is equipped with a magnetostriction core 100 which can perform both of a torsional maneuver, i.e., the twisting maneuver and the vertical maneuver. The ultrasonic handpiece is also equipped with a magnetostriction stack 110, a horn 120 for ultrasonic wave which is attached to the stack, and an electric coil 150 which surrounds the stack. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To generally provide a fluid pressure sensing chamber, in particular a fluid pressure sensing chamber used in ophthalmological surgical facilities. SOLUTION: A surgical cassette includes a tubing extension extended to the pressure sensing chamber. The tubing extension has a reduced diameter portion and a plurality of ports communicating with the pressure sensing chamber via fluid. A surgical system receives the cassette by a surgical console with a cassette receiving portion. The tubing extension has a plurality of ports formed so as to purge air from the pressure sensing chamber, however, the ports has a size so that bubbles entering the tubing cannot easily flow into the pressure sensing chamber. The reduced diameter portion creates a pressure difference between the holes to send the fluid to the pressure sensing chamber under differential pressure. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system for identifying a surgical cassette which needs to use no fragile tab. SOLUTION: The system comprises a surgical controlling system 10 and a cassette 22, wherein the cassette 22 has a set of identification tag 24 changing from opacity to transparency. Changing the opacity of the tag 24 enables the surgical controlling system 10 to identify easily the type of the working cassette 22. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To reduce pulsation in a peristaltic pump without addition of unrequired complication or compliance. SOLUTION: The peristaltic pump 10 is provided with a variable velocity control device adaptable in order to accelerate rotation of the pump 10 passing through a known minimum flow rate point and decelerate rotation of the pump 10 passing through a known maximum flow rate point. Acceleration/deceleration of the peristaltic pump is based on a pump pulsation profile, and the pump pulsation profile is determined during initial priming of the peristaltic pump or other trial run tests. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cassette discriminating system for discriminating performance parameters of respective cassettes. SOLUTION: In this surgical system and cassette 10, the cassette 10 has a discrimination method specific to the cassette 10. Suitable methods for discrimination include a bar code 20 or a radio IC tag. Codable cassette information includes characteristics such as lot numbers, performance characteristics such as pressure sensor calibration data and flow quantity data, and other desired performance characteristics of the cassette 10 obtained in inspection of the cassette 10 when manufactured. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A surgical system that is able to sense the onset of an occlusion or other surgical events as well as when an occlusion breaks. To help avoid overheating of the tip, the system of the present invention predicts the temperature of the eye using irrigation flow rate and reduces the power to the handpiece automatically if an overheating situation is predicted. Alternatively or in addition, the system of the present invention monitors the power drawn by the handpiece, which is indicative of the cutting load on the tip, and automatically adjusts the power or stroke of the tip to compensate for increased loads on the tip.
Abstract:
A method of testing a surgical system that takes advantage of the fact that in a balanced irrigation/aspiration system (inflow = outflow) the duration of the aspiration pressure recovery to the irrigation fluid source pressure immediately following pump stop is independent of pump run time. This method provides a more reliable way of detecting restricted irrigation flow configurations not detectable by the current methods, such as marginal irrigation flow cases that could potentially lead to surgical complications (e.g. chamber collapse during post-occlusion break surge).
Abstract:
A surgical system that is able to sense the onset of an occlusion or other surgical event as well as the instant an occlusion breaks. To help avoid overheating of the tip, the system determines an approximate temperature of the eye using an irrigation flow rate and reduces the power to the handpiece automatically if an overheating situation is predicted. Alternatively or in addition, the system monitors the power drawn by the handpiece, which is indicative of the cutting load on the tip, and automatically adjusts the power or stroke of the tip to compensate for increased loads on the tip.