Abstract: A disposable intravenous administration set for use with a single pump chamber wherein a primary and secondary set are combined into a single I.V. pump set. The dual capacity set would be utilized in conjunction with an I.V. pump having a capacity for at least two distinct flow rates. The primary and secondary portions of the set are interconnected through a Y-type backcheck valve in the usual manner with the secondary source of liquid placed at a higher level than that of the primary. With the secondary set connected to a secondary source of liquid the pump will be set at a flow rate faster than that for the primary set. After the secondary source of liquid is depleted, the primary source will then be administered as the pump will automatically convert to the slower flow rate.

Abstract: A connecting device for medical liquid administration sets, particularly for use in continuous ambulatory peritoneal dialysis comprises a tubular port extending from a medical liquid container. The tubular port has a pierceable diaphragm positioned within and sealing the same. A hollow tubular piercing pin having a sharpened tip is used for penetrating the pierceable diaphragm. A length of flexible tubing extends from the piercing pin and is connected to a catheter positioned in the peritoneum of the patient. A locking mechanism is utilized for selectively retaining the piercing pin within the tubular port following insertion, and for asepticizing the connection. The locking mechanism comprises a tubular clasp which closes around the piercing pin and telescopes over the tubular port. A plurality of ratchets on the inside of the clasp lock the pin and port together following connection.

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: A disposable intravenous pump chamber cassette for an intravenous administration set which is specifically fabricated for use with the administration of blood. The pump chamber is specifically constructed to be utilized in conjunction with an intravenous pump having a driver to activate a diaphragm member and includes an improved outlet valve member having an outwardly extending lateral wall surface to direct the blood away from the biasing mechanism for the outlet valve member to thereby substantially reduce hemolysis.

Abstract: An improved clamp for regulating the flow of fluid through a length of flexible tubing comprising a clamp body for supporting the tubing, having opposing walls extending from the surface of the clamp body so as to present a passage for the flexible tubing. A platen is mounted between the walls for contacting the tubing. Guide surfaces are arranged in the walls with a roller positioned within the guide surfaces. The platen is movably positioned between the roller and the flexible tubing so as to present a compression surface against the tubing along the path of travel of the roller. The combination of the platen and the roller exerts a compressive force against the tubing and distributes the force over a wide area of the tubing so as to prevent permanent deformation of the tubing. This compressive force constricts the tubing and thereby regulates flow of liquid therethrough.

Abstract: An I.V. administration set is provided with a flexible expansion section so as to accommodate an additional volume of liquid without the use of excessive lengths of tubing. The expansion section is in the form of pleated or corrugated tubing which, upon the introduction of liquid into an I.V. set such as by means of a hypodermic syringe, will accommodate an additional portion of liquid which is known in the I.V. administration art as a retrograde volume.

Abstract: A disposable intravenous pump chamber cassette for an intravenous administration set which provides a fast yet fluid tight connection for a diaphragm portion to the pump chamber housing. The pump chamber is specifically constructed to be utilized in conjunction with a peristaltic-type pump having three contact members wherein the outer contact members serve as valves and the central contact member as a pumping member.

Abstract: An improved clamp for regulating the flow of fluid through a length of flexible tubing comprises a clamp body for supporting the tubing, having opposing walls extending from the surface of the clamp body so as to present a passage for the flexible tubing. A platen is mounted between the walls for contacting the tubing. Guide surfaces are arranged in the walls with a roller positioned within the guide surfaces. The platen is movably positioned between the roller and the flexible tubing so as to present a compression surface against the tubing along the path of travel of the roller. The combination of the platen and the roller exerts a compressive force against the tubing and distributes the force over a wide area of the tubing so as to prevent permanent deformation of the tubing. This compressive force constricts the tubing and thereby regulates flow of liquid therethrough.

Abstract: A single port is provided for a container such as an I.V. bag which can serve both as an additive port and also as an administration port. The combined administration and additive port has an inner diaphragm portion which is in open communication with the solution in the container and an outer resealable stopper unit which when pierced by a needle of a hypodermic syringe is self-sealing. The outer resealable unit is removable from the port so that the port subsequently serves as the usual administration port when utilizing the standard I.V. administration equipment.

Abstract: An opening device for use in tearing open the closure or port of a container. A bar-like member has a pivotal portion for engagement on the top of a container and a slot for receiving a tab-like portion with the tab portion having an enlargement which will engage on the bar-like member. When the bar-like member is grasped by a handle and a force exerted away from the container by movement of the arcuate portion on the container port the tab will effect a tearing away from the port and expose the contents of the container. The opener is preferably designed for use in conjunction with opening a parenteral or I.V. solution container which is composed of a flexible plastic material.