Abstract: A method and apparatus for injecting a contrast media having means for preventing, operation thereof until the plunger of a syringe cartridge has been first placed in the fully extended position.

Abstract: A plastic filter assembly having an upper receiving container and a lower receiving container. Either the top or bottom container is provided with at least two recesses for receiving a locking pin in the container not having recesses. The recess has a first receiving portion and a locking portion. The locking pin has an angled engaging surface inclined with respect to longitudinal axis of the container.

Abstract: An endodontic syringe for injecting thermoplastic material, such as gutta percha into a root canal cavity. The syringe includes a drive motor and mechanism for reversible axial translation of a plunger, a removable gutta percha cartridge and needle, and a heating element surrounding the cartridge to heat the gutta percha to a fluid condition. Forward movement of the plunger, against a piston within the cartridge, ejects gutta percha for the cartridge and needle. Reverse movement of the plunger returns it to its starting position, at which the used cartridge can be removed and replaced.The cartridge and needle are of aluminum or aluminum alloy.

Abstract: A microscope slide having on one side a raised marking surface formed of pigmented resinous material, such as an epoxy resin, which dries to a matte finish which is absorptive and retentive of marking ink, and on the other side, behind the raised marking surface, a frosted marking surface.

Abstract: An impact resistant compact condenser comprising a plastic shell having two side walls enclosing at least one heat transfer disc disposed between said side walls dividing the shell into at least one cooling cell and at least one vapor cell. Means are provided for retaining said disc in sealed abutment against said end walls of said side walls, each of said cells having an inlet port and an outlet port.

Abstract: A triac and a mechanical relay, in series with the electrical heater of an incubator, together switch heater current on and off at the same set point temperature if the triac fails short. Similarly, a second mechanical relay in parallel with the triac switches heater current around the triac, should the triac fail open.

Abstract: An electrosurgical device having a generator for producing a radio frequency current. The device senses an RF current leakage and thereby reduces the output of the RF generator so as to limit the amount of RF leakage to levels below a predetermined value.

Abstract: A cleaning composition which comprises a stable suspension of abrasive particles and viable microorganisms in a water solution containing a detergent.

Abstract: An angiographic injector having a separable console selecting and displaying injector functions and parameters. Microprocessors provide serial data transmission between console and injector base, and between injector head and injector base. A microprocessor in the base controls the injector.