72results about How to "Avoid free flow" patented technology

A dispensing closure for viscous fluids contains a closure body, a closure lid and a living hinge structure hingeably connecting the closure lid to the closure body. The closure body includes an upper deck, a skirt configured and arranged to mount to a product container, and a flow conduit extending through the upper deck to provide a flow path from an interior of the closure to an exterior of the closure. The flow conduit includes an entrance orifice and an exit orifice, and an inner wall extending between the entrance orifice and the exit orifice. To provide the desired flow effect, the inner wall includes at least one flow inhibitor structure, such as helically threaded flights extending at least partially inwardly from the inner wall into the flow path to define an unobstructed central flow path and a partially obstructed peripheral flow path.

An infusion pump for metering fluid flow through an delivery tube of an infusion tubing set has an internal occlusion clamp which clamps the delivery tube to prevent the free flow of fluid through the tube when access to the delivery tube in the infusion pump is possible. To release the delivery tube from the infusion pump, a slide clamp is manually used to release the occlusion clamp to an open, non-occluding position while simultaneously occluding the delivery tube to prevent the free flow of fluid.

The invention relates to a dispensing device for dispensing active ingredient fluids to the flushing liquid in a toilet bowl. Said dispensing device comprises at least two holders (6, 7) for accommodating respective reservoirs (2, 3), every reservoir (2, 3) having its own outlet opening via which the respective active ingredient fluid (4, 5) can be dispensed to the flushing liquid or to the surroundings of the dispensing device and the reservoirs (2, 3) being protected from flushing liquid entering their interior. At least one outlet opening of the reservoirs (2, 3) is arranged on the bottom when in the working position and a partial amount of the active ingredient fluid is dispensed to the flushing liquid from at least one of the reservoirs (2, 3) during flushing. The interior of at least one of the reservoirs (2, 3) communicates with a distribution element (9, 10) via the outlet opening, an arrangement preventing the free flow of the active ingredient fluid (4, 5) being interposed. One reservoir (2, 3), one holder (6, 7) and one plate-shaped distributing element (9, 10) each form an independently operative, separate metering unit (A, B), the metering units (A, B) of the dispensing device being immobilized in relation to each other by at least one connecting element (11).

A cassette (1) that is insertable into an infusion pump for delivery of a fluid to a subject that has a housing with two ends for holding flexible tubing (75) through which the fluid is directed. The housing has an open area exposing the tubing, the tubing engages a pumping mechanism when inserted into an infusion pump. An anti-flow valve mechanism (100) associated with the tubing or the cassette and present either in, on or near the housing is made up of a piston (103 / 105) and spring (110), where the spring biases the piston against the tubing to prevent fluid flow.

A radially sealing valve for preventing free flow from an IV set has an elastomeric cup portion that covers an outlet opening and is normally closed by its resiliency. The valve can be incorporated into a cassette for an IV pump that automatically opens the valve when the cassette is loaded. Axial force on the bottom of the cupped valve provides radial contraction or expansion of the sidewall of the valve to open a fluid path.

A delivery tube is inhibited from unintended withdrawal from an infusion pump which has an internal occlusion clamp that clamps the delivery tube to prevent the free flow of fluid through the tube, by overlapping a blocking lip from a compression edge of the occlusion clamp with a restraint surface of an anvil against which the tubing is compressed and by overlapping a blocking projection from the restraint surface with the compression edge. Inhibition is also achieved by positioning an obstruction protrusion adjacent to the compression edge and the blocking lip to resist the application of exterior physical force to force the occlusion clamp from an occluding position to a non-occluding position.