System and method for automatic taking of fluid samples

A method for automatic taking of a fluid sample from a sample site of a living test object, comprising the steps of:

• supplying a rinsing fluid to a catheter means;
• aspirating an amount of an immiscible fluid into the catheter means;
• moving said amount of said immiscible fluid to a three-way junction of said catheter means;
• moving a first part of said immiscible fluid towards an opening of a sample-taking end;
• withdrawing a fluid sample;
• arranging a second part of said immiscible fluid after said taken sample;
• moving said taken sample in said catheter means to a sample-delivery end at a sample tube;
• delivering said taken sample to said sample tube;
• and
• rinsing the lumens of said catheter means by providing a flow of rinsing fluid through said catheter means.

A computer program product for use in an automatic system for taking of a fluid sample from a sample site of a living test object said computer program product comprising computer code portions configured to realize means and functions. In an automatic system for taking of a fluid sample from a sample site of a living test object, comprising:

• catheter means comprising a three-way function configured to be located in proximity to said sample site, said three-way junction is connected to a first catheter means, a second catheter means and a sample-taking end;
• a valve connected to said first catheter means said valve having an inlet for an immiscible fluid to be aspirated into said first catheter means;
• and
• pumping means connectable to said catheter means and configured to aspirate an amount of said immiscible fluid into said first catheter means and to move said amount of said immiscible fluid to said three-way function and arrange a first part of said immiscible fluid in a part of said second catheter means and a second part of said immiscible fluid in a part of said first catheter means:
• whereby said first and second parts of said immiscible fluid being configured to separate a taken sample from the rinsing fluid.

A set of disposables for use in an automatic system for taking of a fluid sample from a sample site of a living test object comprising:

• catheter means comprising a three-way function configured to be located in proximity to said sample site, said three-way junction is connected to a first catheter means, a second catheter means and a sample-taking end;
• a valve connected to said first catheter means, said valve having an inlet for an immiscible fluid to be aspirated into said first catheter means;
• and
• pumping means connectable to said catheter means and configured to aspirate an amount of said immiscible fluid into said first catheter means and to move said amount of said immiscible fluid to said three-way junction and arrange a first part of said immiscible fluid in a part of said second catheter means and a second part of said immiscible fluid in a part of said first catheter means;
• whereby said first and second parts of said immiscible fluid being configured to separate a taken sample from t,he rinsing fluid
• rinsing the lumens of said catheter means (CA, CB) by providing a flow of rinsing fluid through said catheter means (CA, CB) (step 116).