Abbott Laboratories Corporation

Richard M Chittenden

Peter L Bryant

Charles Carlock Classen

An apparatus for measuring the flow of medical liquids within an intravenous solution administration set comprises a primary tube, a secondary tube and a tertiary tube. A constricter mechanism is positioned in the primary tube proximate the opening to the tertiary tube in order to restrict the flow of liquid therethrough. As a result a pressure differential is created between the secondary tube and the tertiary tube when liquid flows through the primary tube. At least a portion of the secondary or tertiary tubes are transparent in order to determine the relative position of liquid in the tube. A series of markings on the tubes represent designated rates of flow. Consequently, the relative position of the liquid is used to display the rate of flow within the system.

I.V. Administration flow rate gauge

The invention relates generally to an improved catheter insertion device of the type having a drum-like receptacle which advances the catheter when it is rotated relative to the base, causing the catheter to move through a tubular outlet. The improvement comprises a removable needle which extends coaxially through a tubular housing tangentially affixed to the dispenser. A flexible cannula telescopically surrounds the distal portion of the needle. The cannula is connected to a catheter outlet from the receptacle and is adapted to be inserted into the vein of a patient during venipuncture. Once venipuncture is performed, the needle is slidably removed from the cannula and catheter outlet, and the catheter is telescopically inserted into and through the cannula and thereby into the vein of the patient. The base and receptacle may then be easily separated and removed from the catheter.

Catheter insertion device

An apparatus for measuring the flow of medical liquids within an intravenous solution administration set comprises a primary tube, a secondary tube and a tertiary tube. A constricter mechanism is postiioned in the primary tube proximate the opening to the tertiary tube in order to restrict the flow of liquid therethrough. As a result, a pressure differential is created between the secondary tube and the tertiary tube when liquid flows through the primary tube. At least a portion of the secondary or tertiary tubes are transparent in order to determine the relative position of liquid in the tube. a series of markings on the tubes represent designated rates of flow. Consequently, the relative position of the liquid is used to display the rate of flow within the system.

Unidirectional catheter placement unit, or the like

A unidirectional, needle outside, reel-type catheter placement unit is disclosed. The unidirectional unit obviates severing of the catheter by the needle, which can occur when the catheter is retracted in bidirectional units. Preferably, the catheter placement unit comprises an overcap or cover which is only coupled to the reel of the reel-type catheter placement unit by a ball clutch when the overcap is rotated in a direction that advances the catheter from the unit.

Unidirectional catheter placement unit

An additive container and transfer unit for transferring a solution from the additive container to a container which is under a vacuum, the transfer unit including a closure having a transfer pin or piercing member which is axially movable from a first position to a second position within a supporting member or guide. The additive container and transfer unit is particularly applicable to the transfer of a medicament within the container to a vacuumized parenteral fluid container. In this application, the additive container is inverted and the point of the transfer pin projecting from the closure is positioned on the I.V. fluid bottle stopper. As downward thrust is applied to the additive container, the end of the transfer pin projecting from the closure will pierce the I.V. fluid bottle stopper. As further thrust is applied, the additive container closure will move along the transfer pin, the other end of the transfer pin thereby piercing the diaphragm portion of the stopper within the transfer unit thereby providing a pathway between the two containers through the passageway in the transfer pin. The vacuum within the vacuumized container will then draw the solution within the additive container into the vacuumized container.

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Grayslake, IL, United States of America

Richard M Chittenden