Abstract:
A system for processing a product with a solvent containing volatile constituents, the system including a pressure chamber (12) for receiving the product, a vacuum pump (18) for evacuating the chamber, a solvent recirculating system for admitting the solvent at a predetermined pressure into the chamber, the solvent recirculating system including a heater (13) for maintaining the temperature of the chamber at the saturation temperature of the solvent, gas liquid separator (34) for separating the gas and liquid components of the solvent discharged from the chamber (12), a first closed loop system connected to the separator to return the gas constituent to the chamber and a second closed loop system connected to the separator to return the liquid component to the chamber.
Abstract:
A method is provided for cleaning an article with a solvent having a boiling point such that the solvent is a gas at room temperature and one atmosphere pressure. Such a method includes the steps of disposing the article in a chamber, introducing the solvent into the chamber so that the solvent contacts the article, pressurizing the chamber so that the solvent is in a liquid state and removes contaminants from the article, purging the chamber to remove the solvent, and removing the treated article from the chamber. Such a system permits the use of liquids having boiling points lower than room temperature, such as certain C1-C4 halocarbons, which liquids have not previously been used as cleaning solvents.
Abstract:
Polymer blends having improved torque transmitting properties are disclosed. The polymer blends include polyetherurethane and a concentration of polyetherester sufficient to provide the polymer blend with a 37 DEG C dynamic torque value greater than 40 % of the polymer bland's 25 DEG C dynamic torque value. The polymer blend can be thermally processed to form small diameter tubing suitable for general purpose catheters requiring both a high degree of maneuverability and sufficient resiliency to avoid tissue perforation.
Abstract:
Improved optical mode mixers (52) for use in conjunction with optical fibers (64) and devices incorporating optical fibers are disclosed and claimed. The optical mode mixers (52) are formed from a coherent, orderly bundle of numerous small diameter optical fibers (64) in a longitudinally aligned, parallel array. The mode mixer (52) is optically linked to the fiber optic cable (36) and effectively reduces undesirable high order modes of light transmission while eliminating alignment sensitivity. The coherent fiber optic bundles may be as short as ten wavelengths of light in length and will have a diameter substantially equal to that of the fiber optic cable (36) to which they are coupled.
Abstract:
The coating of an RF active material on a non-RF active substrate material of typical thickness for packaging purposes, can generate sufficient thermal energy to effect strong bonding of the substrate materials. The RF active material may be deposited on less than the entire inner surface area of the substrate material, preferably, at or near the portion of the substrate surface which represents the heat seal interface. In this manner of application, additional coating or printing of other substances on the substrate surface can be achieved without hampering the heat sealing process. Flexible medical containers capable of containing a product which is maintained and removed under sterile conditions, can be constructed on commercial production machines from these coated non-RF active substrate materials.
Abstract:
An improved conductivity based servo-proportioning system (10, 40) for hemodialysis machines. The servo-proportioning system calculates the actual conductivity contributions of the individual chemical components of the concentrate being utilized, to determine the conductivity set points. An Acidified and Bicarb operation is being performed, then the servo-proportioning system calculates a conductivity set point at both an intermediate and final stage of the servo-proportioning system. If only acetate is being performed, then only the acetate individual chemical components are calculated. If the Na and/or Bicarb concentrations are to be varied, then the conductivity is calculated for the changed Na and/or Bicarb concentrations.
Abstract:
A pharmaceutical composition is provided comprising an unbuffered iso-osmotic aqueous formulation containing an effective amount of ranitidine for the treatment of conditions mediated through histamine H2 receptors. The formulation has a pH of greater than or equal to 5.0 and less than 6.5 and preferably includes an osmotic adjusting agent chosen from the group consisting of dextrose and sodium chloride.
Abstract:
A drug delivery device is provided comprising a cartridge body (12) including an upper portion (14) defining a vial receiving area and terminating in a wall (20), the cartridge body (12) including a cannula (22) extending from the wall. A vial (40) including a beneficial agent is coupled by a retaining member (50) to the cartridge body (12) in an inactivated position. The retaining member (50) allows the vial (40) to move to an activated position. The retaining member (50) including an outer member (52) and an inner member (54), the inner member (54) separating from portions of the outer member (52) as the vial (40) moves from the inactivated position to the activated position.
Abstract:
A bone marrow collection kit (10) is provided comprising a collection container for receiving a bone marrow containing fluid (12) having a body (14) that defines an interior (16) and an inlet opening (18) and an outlet opening (28) and including a prefilter (30) that extends from the outlet opening (28) into the interior of the collection container (16) so that fluid must flow through the prefilter (30) to exit the collection container (12) through the outlet opening (28). A first inline filter member (50) is coupled to the outlet opening (28) of the collection container (12), the first inline filter member (50) having a flexible plastic body (60) that defines an interior (66), and an inlet opening (68) and an outlet opening (70) and the interior including a filter (72) so constructed and arranged that fluid that enters the inlet opening (68) must flow through the filter (72) to exit the first inline filter member (50) through the outlet opening (70). A container for receiving a resultant filtered bone marror containing fluid (94) having an interior in fluid communication with the outlet opening (70) of the first inline filter member (50) is also provided.
Abstract:
The present invention provides an apparatus for use in a peristaltic pump (20) which prevents an inadvertent free flow condition prior to loading or after removal of an I.V. tube (26) in the peristaltic pump (20) and which also prevents the inadvertent occlusion of a loaded I.V. tube (26) in the peristaltic pump (20). A standard I.V. tube (26) has a slide clamp (109) provided thereon. The apparatus includes an I.V. tube groove (29) into which the I.V. tube (26) is positioned, a slide clamp receiving area (62) into which the slide clamp (109) is inserted, and a biased sliding member (81) which the inserted slide clamp (109) engages such that the I.V. tube (26) cannot be loaded into the apparatus without the slide clamp (109) occluding the I.V. tube (26). The present invention also contemplates a slide clamp (109') compatible with the apparatus having a surface pad (125) for facilitating automated identification of the slide clamp (109') in cooperation with a non-obstructive sensor (85) in the safety apparatus.