US 7,320,775 B2
Exchangeable flow cell assembly with a suspended capillary
Thomas E. Kochy, Redwood City, Calif. (US); Roger A. O'Neill, San Carlos, Calif. (US); Terah W. Smiley, Walnut Creek, Calif. (US); and Vidal O. Smith, Newark, Calif. (US)
Assigned to Guava Technologies, Inc., Hayward, Calif. (US)
Filed on May 14, 2002, as Appl. No. 10/146,019.
Claims priority of provisional application 60/291541, filed on May 16, 2001.
Prior Publication US 2003/0017076 A1, Jan. 23, 2003
Int. Cl. G01N 15/06 (2006.01); G01N 33/00 (2006.01); G01N 33/48 (2006.01); G01N 1/10 (2006.01); G01N 21/01 (2006.01)
U.S. Cl. 422—68.1  [422/50; 422/55; 422/81; 422/82; 422/82.05; 422/99; 422/100; 422/101; 422/102; 422/103; 422/104; 436/43; 436/52; 436/164; 436/172; 73/1.01; 73/1.02; 73/53.01; 435/287.1; 435/287.3; 435/288.7; 356/244; 356/246; 204/601] 12 Claims
OG exemplary drawing
 
1. A flow cytometer comprising
an exchangeable flow cell having a flow cell body and a capillary carried by and having one end extending beyond said flow cell body, wherein said flow cell body is provided with a recess extending along a portion of the length of the body, and includes means for accurately positioning the capillary in the recess along the length of the flow cell body,
a block having an opening adapted to receive the exchangeable flow cell and being at least partially formed by two flat surfaces, wherein said positioning means engages said flat surfaces to position the capillary relative to the block, and said block includes means for urging the flow cell body against the flat surfaces, and
a light source for emitting light to illuminate a portion of the capillary.