Patent ID: 7670289
Filing Date: 2010-03-02
Classification: A61M

Abstract:
1. A fluid loss detection device, comprising: a patch; a central opening through said patch so that said patch surrounds said central opening; a boundary edge of said patch circumnavigating said patch; a slit through a portion of said patch, wherein said slit originates at said boundary edge of said patch and terminates approximately at said central opening of said patch; a primary circuit loop within said patch and defining a first perimeter therein, wherein said primary circuit loop surrounds said central opening, which forms a target for receipt of a return access site; an early warning alarm circuit loop within said patch and defining a second perimeter therein, wherein said first perimeter is contained within said second perimeter; an alarm activated by a status change in properties of said early warning alarm circuit loop, wherein said early warning alarm circuit loop is activated by a small blood leak and wherein said emergency shut-down circuit loop is activated by a larger blood loss; and an emergency shut-down circuit loop within said patch and defining a third perimeter therein, wherein said second perimeter is contained within said third perimeter and wherein said primary circuit loop, said early warning alarm circuit loop, and said emergency shut-down circuit loop are in a radial plane formed by said patch.