Abstract: An intraocular lens (IOL) with an oligodynamic metallic coating on its peripheral portion to substantially inhibit the migration of microorganisms towards the optical axis of the lens, where said coating is either an oligodynamic metal, or the combination of an oligodynamic metal and one or more noble metals which are more electronegative than said oligodynamic metal for substantially reducing the formation of secondary cataracts in the central posterior region of the optic in the capsular bag.

Abstract: An optic for an intraocular lens with finished, molded radii on the anterior and posterior edges of the peripheral surface of the optic. The optic has a thin central optical zone and a surrounding annular ring having sufficient material to support haptics. The ring is thicker than the optical zone and, thus, recesses the posterior surface of the optical zone to provide a capsulotomy space. The present novel optic is produced by novel molding pins which are shaped to provide the finished molded radii on the edges of the optic so that the optic requires little or no post-molding finishing or polishing other than the degating and deflashing.

Abstract: An optic for an intraocular lens with finished, molded radii on the anterior and posterior edges of the peripheral surface of the optic. The optic has a thin central optical zone and a surrounding annular ring having sufficient material to support haptics. The ring is thicker than the optical zone and, thus, recesses the posterior surface of the optical zone to provide a capsulotomy space. The present novel optic is produced by novel molding pins which are shaped to provide the finished molded radii on the edges of the optic so that the optic requires little or no post-molding finishing or polishing other than the degating and deflashing.

Abstract: A fixture for holding an optical lens during processing which includes a first lens holder having a lens-covering surface and an exterior surface and a second lens holder with a lens-covering surface and an exterior surface. The lens-covering surfaces are placed over the confronting surface of a lens, and the entire assembly is clipped together so that it may be subjected to the manufacturing processes, for example abrasive tumbling to round the exposed edges of the lens.

Abstract: A universal anterior chamber lens having an optic with bores entering into the edge of the optic at points spaced circumferentially apart about 180.degree.. The optic is supported in the anterior chamber by haptics, each of which have a first end fixed to the optic, a first leg extending from the optic to the peripheral anatomy of the eye, a second leg extending transverse to the optic in contact with the anatomy of the eye and a third leg extending back toward the optic. The first leg includes a concave spring-like section extending toward the third leg. The free end of the third leg extends into the bore provided in the optic so that as the haptics compress, the free end of the haptic can ride freely in the optic bore. A locking mechanism holds the free end of the haptic in the bore.

Abstract: A process and apparatus for dissipating static electrical charge that may build up on the small plastic parts, the tumbling medium or the tumbling chamber itself during an abrasive tumbling process and cause the parts to be repelled out of the abrasive medium. A flow of ionized gas is distributed about the tumbling chamber, discharges the parts and provides a mechanical action to return the parts to the abrasive medium. This flow of ionized gas dissipates the static charge.

Abstract: A fixture for holding an optical lens during processing which includes a first lens holder having a lens-covering surface and an exterior surface and a second lens holder with a lens-covering surface and an exterior surface. The lens-covering surfaces are placed over the confronting surface of a lens, and the entire assembly is clipped together so that it may be subjected to the manufacturing processes, for example abrasive tumbling to round the exposed edges of the lens.

Abstract: A method and apparatus for forming a round end on a small plastic filament which includes a die having a channel extending into one side with a hemispherical interior end and a bore extending into the other side and coaxially aligned with the channel and having a conic interior end. The tip of the conic section communicates with the hemispherical section. A relief recess is spaced from the periphery of the hemispherical section by a land portion. The peripheral edge of the land portion, which also forms the edge of the channel, may be formed into a knife edge. In the die the filament is cold-formed to provide a hemispherical section spaced apart from the distal end of the filament. Material displaced during the cold-forming process is deposited in a relief section extending peripherally about the channel.

Abstract: A device particularly suited for collecting and dispensing an arterial blood sample. A needle is connected to a flexible transparent tube that includes an air exit vent with a nonwet filter so air, but not blood, can exit the vent under arterial blood pressure. A special needle adapter prevents formation of air bubbles, and a baffle system in the needle minimizes blood and air mixing. A clamp on the reservoir pinches off an air contaminated blood segment and can longitudinally strip a different blood segment which is not air contaminated. The tubular reservoir has an oxygen blocking coating, and its internal surface includes a dry anticoagulant coating.

Abstract: A method of dispensing a blood sample from a flexible tube by pinching the tube with a clamp and stripping the blood from the tube by moving the clamp along the tube while the clamp is in a clamped position.

Abstract: A method of collecting a blood sample, such as from an artery, in a flexible tube collector while forcing at least a portion of the air in the collector through a "nonwet" filter by means of blood pressure. This nonwet filter prevents escape of blood from the collector. The blood containing blood sampler can then be chilled in an ice bath if a test is not run immediately, and then the test sample dispensed to a machine for testing the partial pressure oxygen and carbon dioxide in the blood. If the machine does not have a vacuum extractor, blood can be stripped from the tube by a movable clamp structure.

Abstract: A device particularly suited for collecting and dispensing an arterial blood sample. A needle is connected to a flexible transparent tube that includes an air exit vent with a nonwet filter so air, but not blood, can exit the vent under arterial blood pressure. A special needle adapter prevents formation of air bubbles, and a baffle system in the needle minimizes blood and air mixing. A clamp on the reservoir pinches off an air contaminated blood segment and can longitudinally strip a different blood segment which is not air contaminated. The tubular reservoir has an oxygen blocking coating, and its internal surface includes a dry anticoagulant coating.

Abstract: A method of collecting a blood sample, such as from an artery, in a flexible tube collector while forcing at least a portion of the air in the collector through a "nonwet" filter by means of blood pressure. This nonwet filter prevents escape of blood from the collector. The blood containing blood sampler can then be chilled in an ice bath if a test is not run immediately, and then the test sample dispensed to a machine for testing the partial pressure oxygen and carbon dioxide in the blood. If the machine does not have a vacuum extractor, blood can be stripped from the tube by a movable clamp structure.

Abstract: A clamp with an exposed roller for manually rolling along a flexible tube to express the tube's contents. The stripper clamp is useful for one-handed movement toward a dispensing end of a flexible tube blood reservoir.

Abstract: A syringe barrel with an integral laterally flexible locking sleeve with peripheral segmenting slots and a series of integral longitudinal spring ribs on an outer surface of the flexible sleeve.

Abstract: A hypodermic needle having a hub of polycarbonate which is extremely adherent to an epoxy for securing a cannula to the hub. A syringe barrel adapter of a material softer than polycarbonate; i.e., polypropylene, is wedge fitted to the hub and compressively cold flows slightly during storage to prevent long term crazing or stress cracking of the polycarbonate hub.

Abstract: An interfitting rib structure on a hypodermic needle and its protector which have beveled ends to rotationally shift the needle and protector into proper alignment during high speed assembly.

Abstract: A needle hub with an internal plug and an external skirt which wedgingly squeeze a tubular syringe adapter therebetween to permanently lock the needle to the adapter. The adapter is of a softer material (polypropylene) than the hub (polycarbonate) and includes longitudinal crush ribs that frictionally lock the adapter and hub together while providing a sterilizing gas vent into the adapter-hub joint.

Abstract: A hypodermic needle having a cannula secured to a transparent polycarbonate hub having a deflection temperature of approximately 270.degree. to 290.degree. F., which needle is autoclavable in the range of approximately 240.degree. to 260.degree. F. without substantial distortion.

Abstract: A hypodermic syringe with a thermoplastic syringe barrel having an integral locking sleeve at its forward end. The locking sleeve has a slot construction positioned relative to the barrel's front end to enhance mold release flexing of the sleeve during formation and firm locking control on a hypodermic needle or the like during use.