Multi-microorganism detection system

A multi-microorganism detection system comprising:

• a concentration unit including a magnetic member for generating a magnetic force and configured to concentrate a magnetic particle-microorganism complex using the magnetic force;
• a separation unit configured to separate magnetic particles from the magnetic particle-microorganism complex using the magnetic force and a dielectrophoresis (DEP) force;
• and
• a detection unit configured to detect the magnetic particle-microorganism complex using a fluorescence signal of the magnetic particles,
• wherein the separation unit includes:
• a third injection unit configured to inject a sheath fluid containing the magnetic particles and the magnetic particle-microorganism complex;
• a separation channel through which the magnetic particles and the magnetic particle-microorganism complex are moved;
• a third discharge unit configured to discharge the separated magnetic particles;
• and
• a fourth discharge unit configured to transmit the separated magnetic particle-microorganism complex to a detection channel, and
• wherein:
• one end of the separation channel is coupled to the third injection unit;
• the other end of the separation channel is coupled to the third discharge unit and the fourth discharge unit;
• and
• a width of the separation channel is increased in a direction from the one end thereof and then is decreased in a direction toward the another end.

A multi-microorganism detection system comprising:

• a concentration unit including a magnetic member for generating a magnetic force and configured to concentrate a magnetic particle-microorganism complex using the magnetic force;
• a separation unit configured to separate magnetic particles from the magnetic particle-microorganism complex using the magnetic force and a dielectrophoresis (DEP) force;
• and
• a detection unit configured to detect the magnetic particle-microorganism complex using a fluorescence signal of the magnetic particles,
• wherein the separation unit includes:
• a third injection unit configured to inject a sheath fluid containing the magnetic particles and the magnetic particle-microorganism complex;
• a separation channel through which the magnetic particles and the magnetic particle-microorganism complex are moved;
• a third discharge unit configured to discharge the separated magnetic particles;
• and
• a fourth discharge unit configured to transmit the separated magnetic particle-microorganism complex to a detection channel, and
• wherein the separation channel has one side having a quadrilateral shape which is disposed parallel to the magnetic member,
• the third injection unit is coupled to an end portion of one side of the separation channel close to the magnetic member, and
• the third discharge unit and the fourth discharge unit are coupled to the separation channel at a diagonal position of the third injection unit.