Abstract: Polymeric materials which are optically clear and resistant to discoloration are disclosed. In one embodiment, such compositions comprise optically clear, cross-linked polymers derived from a mixture comprising (A) a vinyl-containing polyorganosiloxane component, and (B) an organosilicon component including silicon-bonded hydride groups which react with vinyl groups included in (A) during the polymerization and (C) an effective platinum group metal-containing catalyst component, provided that the mole ratio of vinyl groups to silicon-bonded hydride groups in the mixture is greater than 1.2, preferably greater than about 4 or about 5, and is such that the polymer has a reduced discoloration susceptibility relative to a substantially identical polymer having a mole ratio of vinyl groups to silicon-bonded hydride groups in the precursor mixture equal to 1.2.

Abstract: New intraocular lenses, fixation member assemblies for use in such lenses and methods for making the same. In one embodiment, the present invention involves a method for producing a fixation member assembly which includes exposing a fixation member component to a first plasma at conditions effective to enhance, relative to a substantially identical fixation member component which is not subjected to the exposing step, the bondability between the fixation member component and a polymeric coating to be located on the fixation member component; and exposing the fixation member to a second plasma in the presence of at least one material selected from polymeric components, polymerizable components and mixtures thereof at conditions effective to form the polymeric coating located on the fixation member component. Enhanced bondability between the polymeric coating-containing fixation member component and the optic of the intraocular lens and/or enhanced biocompatibility are preferably provided.

Abstract: Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R.sub.4 R.sub.5 -SiO, end blockers containing silioxane units of the formula R.sub.1 R.sub.2 R.sub.3 -SiO..sub.5, and dialkyl siloxane units of the formula R.sub.6 R.sub.7 -SiO. R.sub.1 and R.sub.2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R.sub.3 is an alkenyl group. R.sub.4 and R.sub.5 are phenyl or mono lower alkyl substituted phenyl groups. R.sub.6 and R.sub.7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

Abstract: Disclosed is a method for producing an intraocular lens including an optic and at least one haptic. In one embodiment, the method comprises: exposing the lens bonding region of the haptic to a plasma at conditions effective to enhance the bondability of the lens bonding region to the optic; and bonding the exposed lens bonding region to an optic. The plasma exposed haptic may be coated with a material, e.g., to preserve the enhanced bondability property, prior to bonding the coated lens bonding portion to the optic. Intraocular lenses having enhanced haptic-optic bonding are also disclosed.

Abstract: A method of making an intraocular lens including providing a fixation member having a proximal end portion with the proximal end portion including an elongated filament, converting a region of said filament at said proximal end portion from a first configuration into a second configuration which is adapted to provide a mechanical interlock and molding an optic about the proximal end portion of the fixation member to form a mechanical interlock between the second configuration and the optic and to attach the fixation member to the optic.

Abstract: A sleeve useful on a surgical instrument, in particular an instrument for treating the eye such as a vitrectomy cutter, is disclosed. Such sleeve includes a hollow elongated sleeve portion with at least one fluid outlet at or near its distal end portion, and a hub secured to the sleeve portion and adapted to receive at least a portion of the surgical instrument. The present sleeve is made of one or more organic polymeric materials and provides substantial benefits, e.g., providing effective fluid seals and being non-irrigating in use, and being disposable after use.

Abstract: An intraocular lens comprising a deformable optic and first and second fixation members. Each of the fixation members has a proximal end portion. First and second elongated anchors are coupled to the proximal end portions of the fixation members, respectively, and the anchors and the proximal end portions are within peripheral regions of the optic so that the anchors can assist in attaching the fixation members to the optic. The anchors are spaced apart so that the deformable optic can be folded to facilitate insertion of the optic through a relatively small incision into the eye.

Abstract: A method of making an intraocular lens including providing a fixation member having a proximal end portion with the proximal end portion including an elongated filament, converting a region of said filament at said proximal end portion from a first configuration into a second configuration which is adapted to provide a mechanical interlock and molding an optic about the proximal end portion of the fixation member to form a mechanical interlock between the second configuration and the optic and to attach the fixation member to the optic.

Abstract: A method of making an intraocular lens including providing a fixation member having a proximal end portion with the proximal end portion including an elongated filament, converting a region of said filament at said proximal end portion from a first configuration into a second configuration which is adapted to provide a mechanical interlock and molding an optic about the proximal end portion of the fixation member to form a mechanical interlock between the second configuration and the optic and to attach the fixation member to the optic.

Abstract: An ultraviolet light absorbing silicone composition comprising silicone elastomer and, covalently bonded thereto, ultraviolet light absorbing component derived from one or more vinyl functional, polymerizable ultraviolet absorbing monomers having the following structures: ##STR1## and mixtures thereof, wherein X is selected from the group consisting of H, alkoxy radicals and halogen, R.sub.1 is selected from the group consisting of H and alkyl radicals, provided that at least one of X and R.sub.1 is other than H, and R.sub.2 and R are independently selected from organic radicals with a terminal double bond.

Abstract: An intraocular lens comprising a deformable optic and first and second fixation members. Each of the fixation members has a proximal end portion. First and second elongated anchors are coupled to the proximal end portions of the fixation members, respectively, and the anchors and the proximal end portions are within peripheral regions of the optic so that the anchors can assist in attaching the fixation members to the optic. The anchors are spaced apart so that the deformable optic can be folded to facilitate insertion of the optic through a relatively small incision into the eye.

Abstract: A method of making an intraocular lens including providing a fixation member having a proximal end portion with the proximal end portion including an elongated filament, converting a region of said filament at said proximal end portion from a first configuration into a second configuration which is adapted to provide a mechanical interlock and molding an optic about the proximal end portion of the fixation member to form a mechanical interlock between the second configuration and the optic and to attach the fixation member to the optic.

Abstract: For the conveying and storage of radioactive materials there are needed containers which shield gamma and neutron-radiation and dissipate the heat of decay whereby there is desired a variable neutron shielding. This is obtained by a neutron shielding between the cooling fins of the container which is fixed on the cooling fins by bosses.

Abstract: Known containers for the transportation and/or storage of irradiated fuel elements have insertion canisters made of steel or massive bodies of non-ferrous metals. These have a high weight and possess no neutron shielding effect. These disadvantages are avoided by making an insertion canister consisting of graphite.

Abstract: There are needed containers having an n-shielding for the transportation and storage or radioactive materials, especially irradiated fuel elements, which containers still remain intact even in extreme accidents and guarantees a good dissipation of heat. This is attained with containers which there is additionally arranged an n-shielding layer of a graphite material between the base body and the inner covering.

Abstract: Containers for the transportation and/or storage of radioactive materials, particularly irradiated fuel elements needing a shielding for keeping back the radioactive rays. Previously known shieldings cannot be adjusted optimally to the activity of the material being transported. A good adjustment can be attained by applying the shielding entirely or partially as metal casing on the container.

Abstract: For the conveying and storage of radioactive materials there are needed containers which shield .gamma. and neutron-radiation and draw off the heat of decay whereby there is desired a variable neutron shielding. This is obtained by a neutron shielding between the cooling fins of the container is formed as an elastic molded body.

Abstract: Conveying and/or storage containers for radioactive materials which emit gamma and neutron radiation consist essentially of a container body having a shielding function for gamma radiation, cooling fins and a neutron shielding arranged between the cooling fins. For the protection of the neutron shielding it is provided with a cover.

Abstract: For the transportation and storage of irradiated nuclear fuel elements there are needed combinations of inner and outer containers wherein the inner container should be usable for the storage of the fuel elements in correspondingly conceived fuel element storehouses without reloading, unnecessary waste of space and burden of weight on the storage support.

Abstract: An intraocular lens comprising a deformable optic and first and second fixation members. Each of the fixation members has a proximal end portion. First and second elongated anchors are coupled to the proximal end portions of the fixation members, respectively, and the anchors and the proximal end portions within peripheral regions of the optic so that the anchors can assist in attaching the fixation members to the optic. The anchors are spaced apart so that the deformable optic can be folded to facilitate insertion of the optic through a relatively small incision into the eye.