US 12,345,650 B2
Inductively coupled plasma torch with reverse vortex flow and method of operation
Alexander V. Loboda, Thornhill (CA); and Adam Carew, Toronto (CA)
Assigned to Standard BioTools Canada Inc., Markham (CA)
Appl. No. 17/287,923
Filed by Fluidigm Canada Inc., Markham (CA)
PCT Filed Oct. 28, 2019, PCT No. PCT/US2019/058342
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/092236, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/752,243, filed on Oct. 29, 2018.
Prior Publication US 2021/0404968 A1, Dec. 30, 2021
Int. Cl. G01N 21/73 (2006.01); H01J 49/10 (2006.01); H05H 1/30 (2006.01)
CPC G01N 21/73 (2013.01) [H01J 49/105 (2013.01); H05H 1/30 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An inductively coupled plasma (ICP) torch for spectrometry, the ICP torch comprising:
a first end for inputting a sample for ionization;
a second end for exhausting the sample in an ionized state;
a torch wall connecting the first end to the second end;
at least one vortex flow inlet positioned at the second end for inputting a gas to cause a reverse vortex flow within the torch during use; and
an injector extending from the first end of the torch into the torch for introducing the sample into a plasma for ionization, the plasma located between the first end and the second end.