Abstract:
New ss-lactams of the general structure: (FORMULA) wherein R represents H or an acyl moiety known from the penicillin or cephalosporin art, R' is hydrogen, lower alkoxy, lower alkoxyalkyl, lower alkyl, phenylthio or lower alkylmercapto, R' is lower alkyl, the broken line represents an optional double bond, and acyloxymethyl esters thereof. All compounds are effective antibacterials.
Abstract:
Certain diethyl- or dipropylacetic acid salts of sodium or calcium valproate which have physiological properties similar to those of valproic acid or sodium valproate but show highly superior stability characteristics.
Abstract:
Gravitational flow system and equipment sets for the sequential administration of medical liquids wherein a primary liquid from a first source (11) can be administered at a flow rate independent of the flow rate of secondary liquid in a second source (13). A combined air barrier and liquid sequencing valve chamber (32) controls the sequencing of the various flows and prevents inadvertent administration of air when the second source is depleted by means of a hydrophilic barrier (45). The valve chamber (32) is divided into two separate flow chambers (34, 41) which are in liquid communication with the respective sources (11, 13) and in air communication therebetween by means of hydrophobic membrane (53).
Abstract:
An improved coextruded tubing (12) composition comprises a physiologically inert flexible waterproof thermoplastic material having encapsulated within the wall (14) of tubing (12) one or more strips (16) of radiopaque material coaxially disposed along the length of tubing.
Abstract:
Gravitational flow systems and equipment sets for the sequential administration of medical liquids wherein a primary source (11) can be administered at a flow rate independent of the flow rate of a secondary source (13) and including a barrier (47) substantially impervious to air to prevent the inadvertent administration of air when the secondary source (13) is depleted. The air barrier may consist of either a hydrophilic membrane (45) or mechanical float valve (65) or a diaphragm operated barrier member (241).