Apparatus for treating uremic patients
AssigneeBASF SE
InventorPeter Kramer
Life of this patent
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Abstract
An apparatus for treating uremic patients by means of ultrafiltration, in which the withdrawn blood is separated by means of a hemofilter into plasma water and residual blood and the plasma water is exchanged in an exchange device. The latter comprises two chambers I and II, separated from one another by a flexible or movable partition, of which chamber I is filled with fluid and can additionally receive the plasma water, and chamber II contains substitution solution. By exerting pressure in the partition, a suction is caused in chamber I and a pressure in chamber II, so that chamber I can take up the plasma water, while the same volume of substitution solution is released from chamber II.
Claims5
Apparatus comprising means for treating the blood of uremic patients constructed and arranged to separate freshly withdrawn blood by means of a filter into plasma water and residual blood, the plasma water being passed into an exchange device from which a substitution solution is returned into the blood circulation after combination with the residual blood,
- said exchange device comprising a closed container which is completely filled with fluid and can be closed air-tight,
- said container further comprising separate enclosed chamber I and enclosed chamber II, which are separated from one another by a movable or flexible partition, chamber I being filled with fluid and being constructed and arranged to take up additional plasma water, and chamber II being filled with substitution solution,
- said exchange device further comprising means to exert pressure by weight on said partition so as to create a suction in chamber I and a corresponding pressure in chamber II.
Dependencies are inferred from the claim text.