Abstract:
PROBLEM TO BE SOLVED: To provide an aerodynamic module for supplying power to a vitrectomy apparatus, attaining the high speed operation of the vitrectomy apparatus with the minimum number of components. SOLUTION: A system for supplying aerodynamic power to the vitrectomy apparatus includes the first (A) and second (B) output ports, an output valve (210), an exhaust valve (205), and three manifolds. The output valve supplies compressed gas to the first and second output ports alternately, and the exhaust valve (205) supplies pressurized gas to the output valve. Two manifolds fluidly connect the output valve to the first and second output ports, and the third manifold (250) fluidly connects the exhaust valve to the output valve. When the exhaust valve supplies pressurized gas to the output valve, the output valve supplies the pressurized gas to the first and second output ports alternately at high speed to supply power to the apparatus. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a peristaltic pump having reduced pressure pulsation. SOLUTION: This cassette has an elastic sheet adhered to or mechanically mounted on a rigid base. One flow path corresponding to a flow path formed in the elastic sheet is formed in the rigid base. The cassette is used in combination with the peristaltic pump which has a pump head roller mounted radially from the rotating shaft of a pump motor for compressing an elastic flow path against the rigid base being operated. The flow path formed in the rigid base has a smooth fluid line with no sharp edge or no rapid directional change and corresponds to a fluid groove path formed in the elastic sheet. Herein, a transition region which has a relatively constant cross section approximate to the cross section of the flow path formed in the rigid base or of the fluid groove path formed in the elastic sheet is provided throughout the length in such a form that the whole fluid passage has a relatively constant cross section. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cassette for surgical operation having a hard fluid channel formed in a part or a housing made of a rigid plastic to improve a conventional technique. SOLUTION: The housing plays a role as the substrate for an elastomer acoustic coupling formed on the housing of the exterior side of the fluid channel by an over-molding process. Such a technique eliminates the necessity of an adhesive for mounting the elastomer acoustic coupling on the housing, and also ensures the removal of air from between the elastomer acoustic coupling and the housing. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a surgical system having an ultrasonic flow sensor with a small error of flow measurement. SOLUTION: A surgical system having a console that receives a cassette with a rigid fluid channel formed into a rigid plastic component or housing. The housing serves as a substrate for an elastomeric acoustic coupling that can be formed on the housing outside the fluid channel. The acoustic transducer is elastically mounted within the console, such as on a spring, so as to provide a relatively constant force between the transducer and the acoustic coupling when the cassette is installed in the console. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
A system for a pneumatically-powered vitrectomy machine includes an output port, a venting valve, a venting manifold, a pressure transducer, and a controller. The output port provides pressurized gas to a vitrectomy probe. The venting valve is located close to the output port. The venting manifold fluidly connects the venting valve to a venting port. The venting port vents pressurized gas from the venting manifold. The pressure transducer is located near the output port. The pressure transducer is configured to read a pressure of a gas near the output port. The controller is adapted to receive information about the pressure and activate the venting valve. When the information received from the pressure transducer indicates a fault condition, the controller directs the venting valve to open.
Abstract:
An improved consumable for use in a fluid/gas exchange in vitreoretinal surgery. The consumable includes a syringe having a barrel with a first opening for receiving a retinal tamponading gas, a stopper slidably disposed within and fluidly sealed to the barrel, a plug assembly, and a plunger. The plug assembly facilitates both the filling of the syringe with retinal tamponading gas as well as the injection of the tamponading gas into the eye.
Abstract:
A system for providing pneumatic power to a vitrector includes first (A) and second (B) output ports, an output valve (210), an isolation valve, and three manifolds. The first and second output ports provide pressurized gas to power a vitrector. The output valve alternately provides pressurized gas to the first and second output ports. The isolation valve (205) provides pressurized gas to the output valve. Two manifolds fluidly connect the output valve to the first and second output ports. A third manifold (255) fluidly connects the isolation valve to the output valve. When the isolation valve provides pressurized gas to the output valve, the output valve operates at a high rate of speed to alternately provide pressurized gas to the first and second output ports thereby powering the vitrector.