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Blood leak detector

  • US 3,900,396 A
  • Filed: 03/22/1974
  • Issued: 08/19/1975
  • Est. Priority Date: 03/22/1974
  • Status: Expired due to Term
First Claim
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1. IN AN ARTIFICIAL KIDNEY MACHINE, A BLOOD LEAKAGE DETECTOR COMPRISING A TRANSPARENT FLOW CONDUIT CONTAINING DEALYSATE FROM THE ARTIFICIAL KIDNEY MACHINE, AN OPAQUE BLOCK OF HEATABSORBING MATERIAL HABING A BORE CLOSELY RECIEVING SAID CONDUIT, SAID BLOCK BEING FORMED WITH A PAIR OF INTERSECTING DIVERGENT LIGHT PASSAGES, ONE OF SAID PASSAGES TRAVERSING SAID CONDUIT SUBSTANTIALLY PERPENDICULARLY WHERETO AND THE OTHERR BEING CLEAR OF THE DONDUIT AND DEFINING AN INDEPENDENT CLEAR REFERENCE PASSAGE, A LIGHT SOURCE MOUNTED IN THE BLOCK AT THE INTERSECTION OF SAID PASSAGES, RESPECTIVE PHOTOSENSITIVE ELEMENTS MOUNTED IN THE BLOCK AT THE END PORTION OF SAID PASSAGES, AND

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