HEAT EXCHANGER FOR EXTRACORPOREAL BLOOD CIRCUIT

A heat exchanger wherein heat transfer fluid flows through a tube having an integral, substantially continuous hollow helical rib along its length providing a substantially continuous helical flute. The tube is positioned within a chamber connected in an extracorporeal blood circuit such that the bl...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	J.E. LEWIN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING HUMAN NECESSITIES HYGIENE LIGHTING MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A heat exchanger wherein heat transfer fluid flows through a tube having an integral, substantially continuous hollow helical rib along its length providing a substantially continuous helical flute. The tube is positioned within a chamber connected in an extracorporeal blood circuit such that the blood is caused to flow over the exterior surface of the helically ribbed tube. In the preferred embodiment, the blood flows through a plurality of continuous, restricted area flow paths offering substantially uniform flow impedance to the blood, these restricted flow paths being provided by forming the helically ribbed tube in a helical configuration mounted between an inner cylindrical column and an outer cylindrical shell such that the blood is caused to flow through the plural paths of restricted cross-sectional area provided by the helical flute. In one embodiment, the heat exchanger tube and blood chamber are formed as an independent unit adapted for use in the desired location of an extracorporeal blood circuit. In the other embodiments, the heat exchanger is formed integral with a blood oxygenator in which oxygen is absorbed into the blood and carbon dioxide is released therefrom.