| US 7,485,153 B2 | ||
| Fluid free interface for a fluidic analyzer | ||
| Aravind Padmanabhan, Plymouth, Minn. (US); Tom Rezachek, Cottage Grove, Minn. (US); Ron L. Bardell, St. Louis Park, Minn. (US); Douglas Bird, Little Canada, Minn. (US); and Bernard S. Fritz, Eagan, Minn. (US) | ||
| Assigned to Honeywell International Inc., Morristown, N.J. (US) | ||
| Filed on Dec. 27, 2005, as Appl. No. 11/306,401. | ||
| Prior Publication US 2007/0144277 A1, Jun. 28, 2007 | ||
| Int. Cl. G01D 21/00 (2006.01) | ||
| U.S. Cl. 73—865.5 [73/58] | 1 Claim |
| 1. A fluidic analyzer, comprising:
a cartridge having a flow channel defined by flow channel walls, wherein an opening extends from outside through an exterior
wall of the cartridge, into a chamber having a volume defined by one or more chamber walls, the chamber filled with a fluid
that is in fluid communication with the flow channel;
a resilient and/or flexible membrane disposed in or over the opening and secured to at least a portion of the cartridge to
form a fluid tight seal;
an instrument for receiving the cartridge, the instrument having a plunger that is in registration with the resilient and/or
flexible membrane when the cartridge is received by the instrument; and
the instrument including a moving mechanism to controllably move at least an end of the plunger into engagement with the resilient
and/or flexible membrane and to deform the resilient and/or flexible membrane into the chamber at a controlled rate to thereby
induce a desired flow rate profile in the flow channel of the cartridge
to support flow cytometric measurement.
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