Abstract:
Se describen aquí varias formas de realización de un brazo actuador o patilla que controla sin uso de energía el flujo de líquido a una lente rellena de líquido. Un conjunto vertical de pinza comprime a un reservorio de solución en una primera dirección vertical mediante la disposición lateral de un deslizador montado sobre la parte externa del alojamiento. El conjunto puede asimismo tener una forma tal que provea la compresión del reservorio en una segunda dirección horizontal mediante la disposición lateral de un deslizador. En otra forma de realización, el alojamiento puede contener un pistón que se mueve en forma lateral dentro del alojamiento y hace colapsar al reservorio dispuesto adyacente al pistón y también dentro del alojamiento. El alojamiento puede contener una pluralidad de domos comprimibles cada uno de los cuales pueden ser comprimidos para provocar la compresión local del reservorio dispuesto dentro del alojamiento. La compresión del reservorio hace que se infle el líquido de un módulo de lente.
Abstract:
Se describe aquí una forma de realización de un sistema activador piezoeléctrico para una lente rellena con líquido. Se provee un reservorio piezoeléctrico que comprende un líquido. En una realización, el reservorio está dispuesto alrededor del perímetro de un módulo de lentes dentro de un marco. En una realización, hay electrodos tramados dentro del reservorio, y están conectados a una fuente de energía. Un potencial aplicado hace que el reservorio se doble con una magnitud y dirección relacionadas con la amplitud y polaridad respectivas del potencial. En una realización, la flexión del reservorio hace que el líquido se expanda o contraiga el módulo de lentes rellenas con líquido.
Abstract:
Se provee un montaje de actuador para un lente relleno con fluido ajustable. En algunas formas de realización, el montaje de actuador incluye una abrazadera configurada para ajustar la potencia óptica del módulo de lente con fluido cuando la abrazadera se comprime. En algunas formas de realización, un elemento magnético se configura para ajustar la potencia óptica del lente relleno con fluido. En algunas formas de realización, un émbolo cambia la potencia óptica del módulo de lente con fluido. En algunas formas de realización, un depósito se configura de modo que la deformación del depósito cambia la potencia óptica del lente relleno con fluido. En algunas formas de realización, un globo se configura para deformar el depósito. En algunas formas de realización, un lente relleno con fluido ajustable incluye un tabique configurado para ser perforado por una aguja y sellar en forma automática y fluida una cámara con fluido luego de retirar la aguja. En algunas formas de realización, un elemento térmico podrá calentar fluido dentro de una cámara con fluido para cambiar una potencia óptica del módulo del lente.
Abstract:
An embodiment of a piezoelectric actuator system for a fluid-filled lens is described herein. A piezoelectric reservoir is provided encompassing a fluid. In an embodiment, the reservoir is disposed around the perimeter of a lens module within a housing. In an embodiment, electrodes are woven into the reservoir and connected to a power source. An applied potential causes the reservoir to flex with a magnitude and direction related to the amplitude and polarity respectively of the potential. In an embodiment, flexing of the reservoir causes fluid to either inflate or deflate the fluid-filled lens module.
Abstract:
Various embodiments of a non-powered actuator arm for controlling liquid flow to a fluid-filled lens are described herein. A vertical tweezer assembly compresses a reservoir of solution in a first vertical direction by lateral disposition of a slider mounted on the outside of the housing. The assembly may also be shaped to provide compression of the reservoir in a second horizontal direction by lateral disposition of a slider. In another embodiment, a housing may contain a piston that moves laterally within the housing and collapses the reservoir disposed adjacent to the piston and also within the housing. The housing may contain a plurality of compressible domes which can each be compressed to cause a local compression on the reservoir disposed within the housing. Compression of the reservoir causes liquid inflation of a lens module.
Abstract:
The present invention provides a retractor featuring cassette assemblies that provide the blades for the retractor and include mechanisms for controlling the angulation and retraction of the blades. The use of such cassette assemblies allow for the addition or removal of blades on the retractor by attaching or detaching the cassette assemblies to a frame. The mechanisms for controlling angulation and retraction of the blades allow a surgeon greater flexibility for creating a surgical site.
Abstract:
An actuator assembly for an adjustable fluid-filled lens is provided. In some embodiments, the actuator assembly includes a clamp configured to adjust the optical power of the fluid lens module when the clamp is compressed. In some embodiments, a magnetic element is configured to adjust the optical power of the fluid-filled lens. In some embodiments, a plunger changes the optical power of the fluid lens module. In some embodiments, a reservoir is configured such that deformation of the reservoir changes the optical power of the fluid-filled lens. In some embodiments, a balloon is configured to deform the reservoir. In some embodiments, an adjustable fluid-filled lens includes a septum configured to be pierceable by a needle and automatically and fluidly seal a fluid chamber after withdrawal of the needle. In some embodiments, a thermal element can heat fluid within a fluid chamber to change an optical power of the lens module.
Abstract:
In an embodiment, a hinge for a fluid-filled lens assembly includes a base having a first end configured to connect to a temple arm of the lens assembly and a second end configured to connect to a frame of the lens assembly, wherein the base includes a gap that is shaped to allow for tubing to pass from the first end to the second end of the base. In an embodiment, the first end of the base includes a cammed surface configured to engage a surface of the temple arm. In an embodiment, the first and second ends of the base are configured to flex around a rotation axis of the hinge.
Abstract:
An actuator for a fluid-filled lens including a housing having a first and a second end; a reservoir disposed within the housing. In an embodiment, a slider is slidingly disposed within the housing and disposed adjacent to the reservoir. In an embodiment, the actuator further includes a compression arm having a first end that is fixed and a second end that is not fixed, wherein the compression arm is disposed adjacent to the reservoir. Sliding the slider from one end of the housing to the other causes the slider to push the second end of the compression arm so as to compress the reservoir. In an embodiment, the slider includes a first end having a wedge shape configured to compress the reservoir. Sliding of the slider from one end of the housing to the other causes the first end of the slider to compress the reservoir.
Abstract:
Embodiments of the invention provide devices and methods for capturing text found in a variety of sources and transforming it into a different user-accessible formats or medium. For example, the device can capture text from a magazine and provide it to the user as spoken words through headphones or speakers. Such devices are useful for individuals such as those having reading difficulties (such as dyslexia), blindness, and other visual impairments arising from diabetic retinopathy, cataracts, age-related macular degeneration (AMD), and glaucoma.