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Equipment and method for treating circulatory arrest

  • US 5,411,027 A
  • Filed: 03/08/1994
  • Issued: 05/02/1995
  • Est. Priority Date: 07/03/1992
  • Status: Expired due to Fees
First Claim
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1. An apparatus for treating circulatory arrest or other acute conditions affecting the heart and brain of a patient which comprises:

  • a tubular cannula having a sharp tip which can be inserted into an artery of said patient, said cannula having a diameter smaller than a diameter of the artery into which it is inserted,a probe means for emitting ultrasound waves toward the skin of said patient and for receiving echoes of said ultrasound waves so as to locate the artery into which said tubular cannula is inserted,an electronic unit connected to said probe and containing drive and detection circuits and sweeping and modulation circuits for conversion of said echoes onto a display screen,catheter means including a tube having a proximal end and a distal end for passage through said tubular cannula into said artery and along said artery until said distal end thereof reaches a descending aorta of said patient, said catheter means including a first annular elastic balloon located between 20 and 250 mm from said distal end of said tube and inflatable to form a tight seal against an inner wall of said descending aorta, and defibrillation electrode means attached to said tube less than 200 mm from said distal end of said tube for internal defibrillation of a patient'"'"'s heart, andelectronic drive means for sending voltage pulses of adjustable energy to said defibrillation electrode means.

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