US 12,343,463 B2
Blood filtering machine provided with a measuring system comprising optical sensors
Riccardo Molinari, Medolla (IT); and Davide Bagnoli, Medolla (IT)
Assigned to MEDICA S.P.A., Medolla (IT)
Appl. No. 17/916,291
Filed by MEDICA S.P.A., Medolla (IT)
PCT Filed Mar. 31, 2021, PCT No. PCT/IB2021/052683
§ 371(c)(1), (2) Date Sep. 30, 2022,
PCT Pub. No. WO2021/198945, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 102020000006706 (IT), filed on Mar. 31, 2020.
Prior Publication US 2023/0173152 A1, Jun. 8, 2023
Int. Cl. A61M 1/16 (2006.01); A61B 5/00 (2006.01); A61B 5/1455 (2006.01); A61M 1/34 (2006.01); A61M 1/36 (2006.01)
CPC A61M 1/1605 (2014.02) [A61B 5/1455 (2013.01); A61B 5/6866 (2013.01); A61B 5/7264 (2013.01); A61M 1/3482 (2014.02); A61M 1/3609 (2014.02)] 14 Claims
OG exemplary drawing
 
1. A blood filtering machine comprising a blood circuit (2), which comprises at least one filter (3, 4; 23) and a plurality of ducts (5a-5c) made of a transparent material and designed to be flown through by organic fluids, and a measuring system (7) comprising: at least one optical sensor (8a-8c), which comprises a reading window (10) placed in a point of a respective duct of the plurality of ducts (5a-5c) so as to allow for the vision of the organic fluid flowing in the duct (5a-5c), a light emitter (11) to emit light towards the duct (5a-5c) through the reading window (10) and a light receiver (12) to receive said light after it has gone through the duct (5a-5c); and signal acquiring and processing means (9) to read a signal provided by the light receiver (12) and to measure at least one intrinsic parameter of the organic fluid in the duct (5a-5c) as a function of said signal; the machine (1) being characterized in that said at least one optical sensor comprises a plurality of optical sensors (8a-8c), each arranged on a respective duct of the plurality of ducts (5a-5c), and in that said signal acquiring and processing means (9) comprise one single spectrometer (14), an optical mixer (13), which comprises a plurality of inputs, each connected to the light receiver (12) of a respective one of the optical sensors (8a-8c), and an output connected to an input of the spectrometer (14), and a control unit (17), which is configured to activate the light emitter (11) of one optical sensor (8a-8c) at a time so as to measure a parameter of one organic fluid at a time.