Apparatus for exchange of substances between two media on opposite sides of a membrane
OwnerJosef A. E. Spaan, Pieter C. Veenstra +1inventors
InventorsJosef A. E. Spaan, Pieter C. Veenstra, Johannes M. M. Oomens
Life of this patent
Estimating the term…
Abstract
An apparatus for exchanging substances through a membrane which is permeable thereto has a drum or the like rotatably disposed in a housing, a membrane in spaced relation with the housing and drum about the drum, inlet means for introducing a liquid containing a substance which is to be replaced with another substance and a discharge means spaced from the inlet means to cause tangential flow of the liquid between the drum and membrane, and means for introducing fresh fluid into the housing.
Claims12
An apparatus for the exchange of substances between two fluids separated by a membrane, comprising a housing, a fluid-impervious member rotatably disposed coaxially in the housing with its peripheral surface in spaced relationship therewith, a membrane tautly disposed about the said member and adapted to form a first annular gap between the membrane and the rotatable member and a second annular gap between the housing and membrane in response to tangential flow of a first fluid in said first gap, inlet means for introducing the first fluid into the first gap and means spaced from the said inlet means for discharge of the first fluid from the first gap so as to cause a tangential main flow of the first fluid in the first gap, means for introducing a second fluid into the second gap, and means for removing the second fluid from said second gap.
An apparatus for replacing carbon dioxide in blood with oxygen, comprising a cylindrical housing, a fluid-impervious cylindrical member rotatably disposed coaxially in the housing with its peripheral surface in spaced relationship therewith, a membrane permeable to oxygen and carbon dioxide but impermeable to blood tautly disposed about the said member and adapted to form a first annular gap between the membrane and the rotatable member and a second annular gap between the housing and membrane in response to tangential flow of a fluid in said first gap, inlet means for introducing blood in the first gap and means spaced from the said inlet means for discharge of the blood from the first gap so as to cause a tangential main flow of the blood in the first gap, means for introducing oxygen into the second gap, and means for removing the oxygen from said second gap.
Dependencies are inferred from the claim text.