Other

Gambro Heart-lung Products Ab

Gambro Cardio Ab

Bo A Johnsson

Kaj O Stenberg

Lars J Traven

Ingvar E Losell

Hakan Wiking

Ingvar F Losell

Sune H Palmqvist

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.

Apparatus for the transfer of one or more substances between a gas and a

In a pack of rectangular plates to be used in a regenerative heat exchanger the plates are kept in position by a plurality of mutually parallel tension rods passing through registering openings in the plates. Each tension rod has at its ends securing means co-operating with the outer plates of the stack for holding the plates pressed against each other. At least one of the tension rods is provided with a lifting eye device which can be moved into the pack and out of the pack, respectively.

Pack, comprising a stack of abutting rectangular plates, intended for a

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Landskrona, Sweden

Bo A Johnsson