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Esophageal electrode probe useful for electrical stimulation of the heart

  • US 4,640,298 A
  • Filed: 07/29/1985
  • Issued: 02/03/1987
  • Est. Priority Date: 06/03/1980
  • Status: Expired due to Fees
First Claim
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1. An electrode probe adapted to be inserted into the esophagus of a patient and to provide stimulation of the heart which comprises a central tube provided with radially expansible fixing means at its distal end for axial positioning of the probe with respect to the stomach, a maximum of two stimulation zones selected from a first stimulation zone being positioned on a radially expansible part of the probe at a first distance of about 9 cm from the fixing means and a second stimulation zone being positioned on a radially expansible part of the probe at a second distance of about 4 cm from the fixing means, said first and second distances being predetermined on the basis of the distance from the transition between stomach and esophagus to the transition between the left atrium and the left ventricle so as to ensure that each of the first and second stimulation zones upon expansion of the expansible parts is in close contact with the posterior side of the left atrium or ventricle respectively, andan inert electrode being positioned with respect to said stimulation zones as to provide an electrical field through the heart.

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