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.:

US 9420966 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 23, 2016

Filed:

Feb. 02, 2015
Applicant:

Maquet Critical Care Ab, Solna, SE;

Inventors:

Stefan Lindgren, Vallentuna, SE;

Anders Carlsson, Uppsala, SE;

Anton Karlsson, Enskede, SE;

Henrik Falkén, Lidingö, SE;

Gerhard Jobst, Eichstetten, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 5/00 (2006.01); A61B 5/145 (2006.01); A61B 5/1486 (2006.01); A61B 5/1495 (2006.01);
U.S. Cl.
CPC ...
A61B 5/14532 (2013.01); A61B 5/14525 (2013.01); A61B 5/14528 (2013.01); A61B 5/14546 (2013.01); A61B 5/14865 (2013.01); A61B 5/412 (2013.01); A61B 5/1495 (2013.01);
Abstract

A measuring system for measuring the concentration of substances or analytes in a body fluid or in a body tissue comprises a microdialysis probe comprising a microdialysis membrane, the probe being adapted to be placed in blood or in tissue, a flow through sensor for analyzing a fluid having passed the microdialysis probe, a pump for pumping the fluid to and through the microdialysis probe and further to and through the sensor, and tubing connecting the pump to the microdialysis probe and the microdialysis probe to the sensor. The pump effects a flow rate in the system in the interval 0.2-15 microliters per minute. The sensor comprises a flow channel having a flow resistance or pressure drop adapted to the characteristics of the microdialysis membrane so as to eliminate, or at least substantially reduce, ultra filtering in the microdialysis membrane.


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