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Cardiac rhythm management systems and methods using acoustic contractility indicator

  • US 7,228,175 B2
  • Filed: 05/15/2002
  • Issued: 06/05/2007
  • Est. Priority Date: 05/15/2002
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • first and second acoustic transducer interfaces, the first acoustic transducer interface configured to be coupled to a first acoustic transducer located in or about right side of a heart, the second acoustic transducer interface configured to be coupled to a second acoustic transducer located in or about a left side of the heart;

    a controller circuit, coupled to the first and second acoustic transducer interfaces to measure a distance, between the first and second acoustic transducers, that varies during a heart contraction, the controller configured to provide a contractility indication based on a variation of the distance during at least one heart contraction; and

    a first communication circuit configured for communicating to an external interface the contractility indication.

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