Patent ID: 9435478
Filing Date: 2016-09-06
CPC Classification: A61M,F16L,H05B

Claim Text:
1. A fluid warmer for temperature control of a medical fluid guided in a fluid tube, the warmer comprising: a resistance heating element for alternating voltage, said resistance heating element having a first and a second electrical supply connection conductor, wherein said first electrical supply connection conductor has a first switch and said second electrical supply connection conductor has a second switch; a heat transfer element which is thermally coupled to said resistance heating element; a functional grounding conductor, which is electrically conductively connected to said heat transfer element, said functional grounding conductor having a third switch; a sensor for determining a present magnitude of a leakage current via said functional grounding conductor; and a control device, said control device being structured to simultaneously switch said first, said second and said third switches into an open switching state within a defined time interval on occurrence of a leakage current that is greater than or equal to a defined maximum threshold current magnitude.