摘要:
A reaction vessel with a bottom drain opening supporting a selected unpressured head of fluid by the surface tension of the fluid. A device processing zone includes a support for spaced rows of reaction vessels, passages communicating with their drain openings of supported vessels, and a pressure source for selectively draining fluid through the drain openings. Generally horizontal bar magnets are supported for selected vertical movement between the vessel rows. A dispensing head has X discharge openings selectively positionable over X selected reaction vessels. A metering pump mechanism selectively meters X a selected quantity of fluid a bulk supply (where X is at least four), and selectively pumps the metered selected quantities through the drain openings to the selected reaction vessels. Methods of drawing fluid from the vessels using the pressure source, and moving the magnets to form a pellet of analyte are also included.
摘要:
A method for identifying artifacts occurring during a measurement of the concentration of an analyte in a biological sample by means of an apparatus that employs temperature-controlled optical probes, introduces electromagnetic radiation into tissue, and collects and detects radiation emitted at a distance from the point at which the electromagnetic radiation is introduced. The values of intensity of radiation emitted at different wavelengths, at different distances between the light introduction site(s) and the light collection site(s), and at different temperatures are collected and used in the method to generate a relationship between these values and the concentration of an analyte in the tissue or the disease state of a patient. The method involves the use of an algorithm that identifies artifacts in the data resulting from motion of the patient and allows the rejection of data sets that contain these artifacts. The algorithm identifies sudden changes in the magnitude and direction in a sequence of collected signals.
摘要:
An intraocular lens (IOL) includes an optic for focusing light and an accommodation assembly for axially moving and/or deforming the optic in response to naturally occurring actions of the eye, thus allowing a patient to more effectively focus on near objects. In addition, the optic may be multifocal or aspheric, wherein the maximum add power of the lens is combined with the increase in diopter power obtained through axial movement and/or deformation of the optic, resulting in enhanced accommodation.
摘要:
An intraocular lens with a hydrophilic polymer coating composition and methods for using same are provided. Specifically, a composition suitable for reducing tackiness in intraocular lens is provided wherein an acrylic intraocular lens is treated by vapor deposition with an alkoxy silyl terminated polyethylene glycol polymer composition. Methods for making an intraocular lens with a hydrophilic polymer coating are also provided.
摘要:
Biocompatible polymers useful for making anterior chamber intraocular lenses (AC-IOL) are provided. The biocompatible polymers are generally composed of one or more acrylate monomers, crosslinked with at least one diacrylate ester and may include one or more additional components such as ultraviolet light and/or blue-violate light absorbing dyes. The AC-IOLs made using the biocompatible polymers disclosed herein are suitable for placement in phakic or aphakic eyes and are intended for refractive correction including myopia, hyperopia, presbyopia and astigmatisms.
摘要:
A wheel polishing device is provided and configured to be used with a polishing stand. The device includes a base plate defining a plurality of tracks and a plurality of peg members. Each of the plurality of peg members configured to slidably engage a least one of the plurality of tracks defined by the plate. A peg expanding hub is configured to expand into the plurality of peg members when a nut is tightened on a center screw that passes through the peg expanding hub.
摘要:
An intraocular lens (IOL) includes an optic for focusing light and an accommodation assembly for axially moving and/or deforming the optic in response to naturally occurring actions of the eye, thus allowing a patient to more effectively focus on near objects. In addition, the optic may be multifocal or aspheric, wherein the maximum add power of the lens is combined with the increase in diopter power obtained through axial movement and/or deformation of the optic, resulting in enhanced accommodation.
摘要:
An intraocular lens (IOL) insertion apparatus for implanting IOLs through smaller incisions. The insertion apparatus includes an insertion cartridge that receives the IOL and cooperates with a handpiece. The cartridge includes a longitudinal lumen from a loading chamber to an open distal mouth that gradually narrows in dimension. A push rod having an extremely soft tip thereon urges the IOL through the cartridge and from the open distal mouth. The soft tip is made of low-stimulus material having a minimum ultimate elongation of 400%. Because of the extremely soft material of the tip, the outside diameter of the open distal mouth can be reduced to no more than 2.0 mm, enabling passage through incisions of 2.2 mm or less. The soft tip may be a thermoplastic elastomer having a relatively high elongation and relatively low modulus at elongations of 100-300%.
摘要:
A lubricous coating composition and methods for using same are provided. Specifically, a composition suitable for providing hydrophobic polymer surfaces with lubricious coatings is described wherein a polyolefin surface is reiteratively treated with hydrophilic polymer solutions and cross-linking solutions. Methods for reiterative coating polymer surfaces are also provided including methods wherein the hydrophobic polymer surface is pretreated using plasma energy.
摘要:
Biocompatible polymers useful for making intraocular lenses are provided. The biocompatible polymers are generally composed of one or more acrylate monomers, crosslinked with at least one diacrylate ester and may include one or more additional components such as ultraviolet light and/or blue-violet light absorbing dyes. The posterior chamber IOLs made using the biocompatible polymers disclosed herein are suitable for placement in phakic or aphakic eyes and are intended for refractive correction including myopia, hyperopia, presbyopia, astigmatisms and for implantation after removal of the natural crystalline lens as warranted by medical conditions such as cataracts.