Abstract: A syringe containing a high water content product and for use in a drug infusion system is provided. The syringe includes a plunger carrying front and rear o-rings made of a diene rubber compound such as chlorobutyl rubber or bromobutyl rubber to impart very low gas permeability characteristics to the o-rings. The plunger may be molded as a single part or in two parts. If molded as one part with radially-engaging mold portions, the seal glands in the plunger may include parting lines from the mold. If molded as two parts with axially-engaging mold portions, the front seal gland may include a sealing surface and under cut that has no parting line. The orings may be surface treated with a lubricant to improve sealing where the molding process gives rise to parting lines in the seal glands.

Abstract: A syringe containing a high water content product and for use in a drug infusion system is provided. The syringe includes a plunger carrying front and rear o-rings made of a diene rubber compound such as chlorobutyl rubber or bromobutyl rubber to impart very low gas permeability characteristics to the o-rings. The plunger may be molded as a single part or in two parts. If molded as one part with radially-engaging mold portions, the seal glands in the plunger may include parting lines from the mold. If molded as two parts with axially-engaging mold portions, the front seal gland may include a sealing surface and under cut that has no parting line. The o-rings may be surface treated with a lubricant to improve sealing where the molding process gives rise to parting lines in the seal glands.

Abstract: A syringe containing a high water content product and for use in a drug infusion system is provided. The syringe includes a plunger carrying front and rear o-rings made of a diene rubber compound such as chlorobutyl rubber or bromobutyl rubber to impart very low gas permeability characteristics to the o-rings. The plunger may be molded as a single part or in two parts. If molded as one part with radially-engaging mold portions, the seal glands in the plunger may include parting lines from the mold. If molded as two parts with axially-engaging mold portions, the front seal gland may include a sealing surface and under cut that has no parting line. The o-rings may be surface treated with a lubricant to improve sealing where the molding process gives rise to parting lines in the seal glands.

Abstract: A pressure sprayer includes an accumulator vessel adapted to hold a pressurized fluid therein and a container that is configured to hold a chemical concentrate. A motor in fluid communication with the accumulator vessel and the container is adapted to be driven by the pressurized fluid and to pump the pressurized fluid and the chemical concentrate. A chamber is adapted to receive the chemical concentrate and the pressurized fluid from the motor to form a chemical solution. A nozzle is in fluid communication with the chamber.

Abstract: The bottle closure comprises a generally cylindrical inner member adapted to be threadedly engaged on the outside of the neck of a bottle. The inner member has a central passage communicating with the neck of the bottle. An outer member is rotatably mounted on and around the inner member. The inner member includes a valve seat defining a fluid passage between the bottle and the outer member and being located within the neck of the bottle. The outer member includes a valve closure element adapted to close the fluid passage in a first annular position of the outer member on the inner member thereby to form a seal with the valve seat. The outer member, when moved to a second annular position relative to the inner member, opens the fluid passage, thereby to allow fluid in a bottle to flow through the closure.

Abstract: The bottle closure comprises a generally cylindrical inner member adapted to be threadedly engaged on the outside of the neck of a bottle. The inner member has a central passage communicating with the neck of the bottle. An outer member is rotatably mounted on and around the inner member. The inner member includes a valve seat defining a fluid passage between the bottle and the outer member and being located within the neck of the bottle. The outer member includes a valve closure element adapted to close the fluid passage in a first annular position of the outer member on the inner member thereby to form a seal with the valve seat. The outer member, when moved to a second annular position relative to the inner member, opens the fluid passage, thereby to allow fluid in a bottle to flow through the closure.

Abstract: A packaging for an implantable medical device such as a heart valve wherein the implantable medical device is immersed in a liquid medium. The packaging comprises ajar and a lid assembly having a seal and a ridge therebetween, the ridge being adapted to contact the seal. At least one circumferential leg is interposed between the lid assembly and the jar. The leg maintains a predetermined spacing between the lid and the jar and may be loaded in compression. The lid assembly may comprise a lid and an overcap. The overcap may turn independently of the lid and may apply compressive pressure to the lid over the ridge and seal. The lid and overcap may be coupled together by, for example, mating snap hooks. At least one of the lid or overcap may have a plurality of snap hooks. At least one of the plurality of snap hooks may be of different length than other of the snap hooks, whereby an asymmetric force may be applied to the lid when the overcap is loosened from the jar.

Abstract: The invention is a plunger useful in extruding or dispensing viscous material which comprises a thin disc of a material which is capable of deforming when subjected to back pressure during use. The edge of the disc has a circular shape and a cylindrical lip attached to the edge of the disc, which lip is disposed perpendicular to the edge of the disc. The disc has a face and a back surface located on opposite sides of the sheet. The disc also has a symmetrical convex portion which protrudes beyond the plane defined by the edge of the disc in the direction of the face and the peak of the convex portion disposed in the center of the disc. The disc further comprises a symmetrical concave portion which protrudes beyond the plane defined by the edge of the disc in the direction of the back surface. The concave portion of the disc surrounds the convex portion of the disc and the convex portion starts at the bottom of the concave portion.