(19)
(11)EP 3 415 091 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
26.06.2019 Bulletin 2019/26

(43)Date of publication A2:
19.12.2018 Bulletin 2018/51

(21)Application number: 18177455.5

(22)Date of filing:  13.06.2018
(51)International Patent Classification (IPC): 
A61B 5/1455(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 14.06.2017 US 201715622846

(71)Applicant: Analog Devices Global Unlimited Company
Hamilton (BM)

(72)Inventors:
  • O'DONNELL, John Jude
    County Clare (IE)
  • LYDEN, Colin G.
    Co. Cork (IE)
  • COLN, Michael C. W.
    Lexington, MA 02421 (US)

(74)Representative: Wardle, Callum Tarn 
Withers & Rogers LLP 4 More London Riverside
London SE1 2AU
London SE1 2AU (GB)

  


(54)SYSTEMS AND METHODS FOR MEASURING OXYGEN IN A PATIENT'S BLOODSTREAM


(57) A photometry device can include a first LED to emit light to a target in response to a first current through the first LED, a second LED to emit light to the target in response to a second current through the second LED, and an inductor, coupled to the first and second LEDs, to store energy associated with at least one of the first and second currents.



















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