Ultralow-power electronics for cardiac monitoring

  • Authors:

  • Lorenzo Turicchia;Bruno Do Valle;Jose L. Bohorquez;William R. Sanchez;Vinith Misra;Leon Fay;Maziar Tavakoli;Rahul Sarpeshkar

  • Affiliations:

  • Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;Convergence Medical Devices, Winchester, MA and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;Department of Electrical Engineering, Stanford University, Stanford, CA and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;SRI International, Menlo Park, CA and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;Linear Technology Corp., North Chelmsford, MA and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA;Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA

  • Venue:
  • IEEE Transactions on Circuits and Systems Part I: Regular Papers - Special section on 2009 IEEE custom integrated circuits conference
  • Year:
  • 2010

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Abstract

Ultralow-power electronics for cardiac monitoring make possible the development of new light-weight and low-cost devices that are ideal for long-term medical measurements and home-based tele-monitoring services. Nowadays, these devices are seen as a critical technology for reducing health-care costs. In this paper, we present several methods for reducing power consumption while retaining the precision necessary for cardiac monitoring. In particular, we describe a micropower electrocardiograph, an ultralow-power pulse oximeter, an ultralow-power phonocardiograph, an integrated-circuit switched-capacitor model of the heart, and an ultracompact and efficient lithium-ion battery charger. These components are, to our knowledge, currently the most power-efficient or minimal-size designs present in the literature in each respective category.