The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 1985
Filed:
Jul. 06, 1982
Bo A Johnsson, Landskrona, SE;
Ingvar E Losell, Staffanstorp, SE;
Sune H Palmqvist, Staffanstorp, SE;
Gambro Cardio AB, , SE;
Abstract
An apparatus for the transfer of one or more substances between a gas and a liquid, for example between an oxygen-containing gas and blood, is disclosed. The apparatus includes a plurality of concentric vessels which define a flow path for the liquid, and which includes along a portion of the path an annular heat exchange chamber having a first end at which the liquid is introduced into the chamber and a second end at which the liquid is conducted from the chamber. A heat exchanger is supported in the heat exchange chamber for conducting a heat exchange fluid in heat exchange relationship with the liquid as the liquid flows through the chamber. Gas in the form of bubbles is introduced into the liquid as the liquid is conducted along the flow path to thereby effect transfer of substances between the gas and the liquid, the gas being introduced upstream of the first end of the heat exchange chamber. A plurality of throttling ports are arranged about the periphery of the annular heat exchange chamber at the second end of the chamber for conducting the liquid from the heat exchange chamber. Downstream of the second end of the heat exchange chamber, excess gas is removed from the liquid together with substances transferred from the liquid to the gas. By means of this arrangement, a very uniform and homogeneous flow around the entire periphery of the heat exchange chamber is provided, which in turn insures that a good heat transfer and gas exchange is obtained.