Rapid measurement of colloid osmotic equilibrium pressure

Details Rapid measurement of colloid osmotic equilibrium pressure Rapid measurement of colloid osmotic equilibrium pressure

1983-01-03

1984-10-09

Goldberg, Gerald

Surgery

Truss

Pad

73 643, A61B 502, G01N 710

Patent

active

044755562

ABSTRACT:
Rapid colloidal osmometer 10 for readout of osmotic equilibrium pressure comprising a cap of rigid semipermeable ceramic 12, a solvent chamber 14 and a pressure transducer 18. The osmometer is for insertion into a living subject. Osmotic equilibrium pressure is calculated by a data reduction computer 40 and displayed on a chart recorder 42. The computer can also be used to control fluid infusion through a valve 44 into a patient 29. An alternate embodiment comprises an osmometer for high pressure use in a pressure chamber 54 in which the osmometer 56 is braced 58. A solution chamber 57, semipermeable membrane 32, and solvent 55 are held at a high pressure by compressor 78. Osmotic equilibrium is predicted by a computer 40 and displayed on a chart recorder 42.

REFERENCES:
patent: 3063288 (1962-11-01), Reiff
patent: 3572315 (1971-03-01), Cullen
patent: 3952730 (1976-04-01), Key
patent: 4245495 (1981-01-01), Kakiuchi et al.
"An Intravascular Protein Osmometer", Hensen, J. W. and Brace, R. A., American Physiological Society, 1983.
Advertisement, Millar Instrument Co., Houston, Texas.

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