Abstract: A device including a valving mechanism which can be operated by one hand. The device includes a housing which surrounds a resilient block of material. The housing may be squeezed to depress and deform the resilient block. Passageways extend through the resilient block to conduct liquid therethrough. A first passage includes a solid valve positioned therein. Compression of the resilient block breaks the seal around the valve by distorting the passageway to allow flow therethrough. A second passage includes a capillary to allow continuous low volume flow not controlled by an operator.
Abstract: There is disclosed herein a dual flow control clamp for use in continuous ambulatory peritoneal dialysis wherein a patient is connected to the source of dialysis solution through a branched flow path. One branch controls flow to the patient and the other branch controls flow from the patient. The clamp provides for selectively controlling flow in one or both flow paths, while never permitting flow simultaneously in both flow paths.
Abstract: A slide clamp for flexible medical tubing is disclosed that includes a slot having receiving and crimping portions. A stabilizer projects into the receiving portion so that the slide clamp may be kept at any selected elevation along the tubing length when the tubing is in the receiving portion of the slide clamp. In the preferred embodiment, the slide clamp includes a channel extending from a first end of the clamp through the stabilizer, thereby forming stabilizer halves, each being capable of flexure toward and away from each other when the tubing is disposed within the receiving portion.
Abstract: An adapter for connecting tubes is provided with an integrally formed clamp which may be manually manipulated from an open to a closed position to at least constrict a tube. The adapter further includes integral latch means, which is manually movable to a closed position by cam action, and which is releasably held in the closed position by the inherent elastic nature of the adapter body.
Abstract: A flow control assembly comprises separate first and second members. The first member is attachable to two or more flexible fluid conduits and serves to establish flow communication between the attached conduits. The second member carries one or more crimping mechanisms and is releasably attachable to the first member. When the first and second members are attached together, the crimping mechanisms of the second member can be independently and selectively operated to close one or more of the flexible conduits attached to the first member. Fluid flow into and through the first member can thus be controlled from a convenient, centralized location. The assembly is extremely adaptable and can be readily incorporated into virtually any fluid system which requires complex, repetitive valving functions. For example, the assembly is ideally suited for use in conjunction with a plasmapheresis system.
Abstract: A flow control device includes a first member and a second member which has a movable portion. The first member accommodates the attachment of a length of flexible conduit. The second member can be positioned on the first member to sandwich the secured conduit between the first member and the movable portion of the second member. When in this position, displacement of the movable portion serves to selectively pinch close the secured conduit between the movable portion and the first member. Fluid flow through the conduit can thus be conveniently controlled. The device is extremely adaptable and can be readily incorporated into virtually any fluid system which requires complex, repetitive valving functions, such as those associated with a plasmapheresis assembly.
Abstract: The pump is designed to dispense fluid nutrient at a selectable constant rate from a disposable, flexible plastic bag having a flexible enteric feeder tube attached to it. The bag is suspended from the pump frame with the outlet of the bag and the enteric feeder tube lowermost. The lower portion of the bag adjacent the outlet is then enclosed between a compliant rubber block on the frame, and a planar pressure plate mounted on a door hinged to the frame. The surfaces of the rubber block is provided with spaced, vertically extending protuberant ridges which, under the influence of the compressive force of the pressure plate, occlude the bag in the region about the outlet to define an effluent flow channel. Similarly, spaced horizontal ridges on the block define, within the flow channel, an unoccluded region which is isolted from the outlet by the lower horizontal ridge, and from the remaining volume of the bag, by the upper horizontal ridge.
Abstract: In a system for controlling flow of fluid from a reservoir to be delivered intravenously to a patient, a valve adjustably constricts a fluid path and maintains a given adjustment until the adjustment is changed. In a preferred embodiment, a valve assembly is insertable into a servo assembly that controls flow through the valve. The valve can be removed from the servo assembly and, when so removed, will retain its last adjustment. A preferred embodiment of the valve utilizes a screw to compress a tube of resilient material.
Abstract: Insulin delivery system comprises insulin reservoir, pump and subcutaneous needle. Pump is electromechanically-driven at a preselectable fixed rate and can be additionally actuated to deliver a preprandial bolus of selected dosage.
Abstract: A flow control device which will limit the maximum flow rate of liquid through a length of flexible tubing such as utilized in a parenteral administration set so as to prevent a runaway condition. A base and a cover member are provided which are hingedly attached to each other and have a groove for the placement of the tubing therein. The groove or grooves are of a dimension such that when the tubing is seated therein and the cover and base members brought together, the tubing is prevented from expanding beyond a predetermined dimension. Frictional engaging means are provided on the base and the cover member so as to provide a temporary closing of the cover and base members over the tubing.
Abstract: Apparatus for the administration of solution to a patient at a precisely controlled rate. A length of flexible, collapsible tubing filled with the solution and connectable at one end to a conduit communicating with the vascular system of a patient is advanced through roller means, so that the solution expelled from the tubing is proportional to the rate of advancement of the tubing through the roller means.