External electromagnetic system for assisting systolic and diastolic ventricular function, and method therefor

• US 6,604,529 B2
• Filed: 06/14/2002
• Issued: 08/12/2003
• Est. Priority Date: 04/24/2001
• Status: Expired due to Term

• Current Assignee: Native Cardio, Inc.
• Original Assignee: Young D. Kim
• Inventors: Kim, Young D.
• Primary Examiner(s): Gilbert, Samuel G.
• Application Number:
  US10/170,625
• Publication Number:
  US 20020156339A1
• Time in Patent Office: 424 Days
• Field of Search: 128/899, 600/9-18, 600/373, 600/375, 607/126-128
• US Class Current: 128/899
• CPC Class Codes: A61M 2205/33 Controlling, regulating or measuring
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 60/178 drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
• CPC Class Codes: A61M 60/253 including a displacement member directly acting on the blood
• CPC Class Codes: A61M 60/462 Electromagnetic force
• CPC Class Codes: A61M 60/515 Regulation using real-time patient data
• CPC Class Codes: A61M 60/538 Regulation using real-time blood pump operational parameter data, e.g. motor current
• CPC Class Codes: A61N 2/00 Magnetotherapy
• CPC Class Codes: A61N 2/06 using magnetic fields produced by permanent magnets A61N2/12 takes precedence

Abstract

A method of aiding the compression and relaxation of a heart chamber using ferromagnetic and diamagnetic pellets inserted into the anterior and posterior walls of the chamber is provided. The pellets are inserted into the myocardial walls of the heart chamber by means of a delivery catheter. Electromagnetic fields, which are used to push and pull the pellets to compress and relax the hear chamber, are cyclically generated by electromagnetic field generators positioned on a patient'"'"'s chest and back wall.

Claims

1. A method of compressing and relaxing a chamber in a heart of a patient comprising the steps of:

(a) inserting a plurality of ferromagnetic pellets into the anterior wall of the heart chamber;

(b) inserting a plurality of diamagnetic pellets into the posterior wall of the heart chamber;

(c) positioning a first electromagnetic field generator on a chest wall of the patient;

(d) positioning a second electromagnetic field generator on a back wall of the patient;

(e) generating a first electromagnetic field with the first electromagnetic field generator thereby pushing the ferromagnetic pellets in the anterior wall away from the first electromagnetic field generator and pulling the diamagnetic pellets in the posterior wall toward the first electromagnetic field generator to compress the heart chamber;

(f) discontinuing the first electromagnetic field generated by the first electromagnetic field generator;

(g) generating a second electromagnetic field with the second electromagnetic field generator thereby pulling the diamagnetic pellets in the posterior wall toward the second electromagnetic field generator and pushing the ferromagnetic pellets in the anterior wall away from the second electromagnetic field generator to relax the heart chamber;

(h) discontinuing the second electromagnetic field generated by the second electromagnetic field generator; and

(i) repeating cyclically steps (e)-(h).

2. The method of claim 1, wherein the heart chamber is the heart'"'"'s left ventricle.

3. The method of claim 1, wherein the pellets are inserted into the myocardium of the anterior and posterior walls.

4. The method of claim 1, further comprising the steps of:

(j) positioning an EKG monitor on the patient and generating a waveform of the heart'"'"'s electrical activity; and

(k) synchronizing the cyclical electromagnetic fields generated by the first and second electromagnetic field generators to correspond to the heart'"'"'s electrical activity.

5. A method of compressing and relaxing a chamber in a heart of a patient comprising the steps of:

(a) inserting a plurality of diamagnetic pellets into the anterior wall of the heart chamber;

(b) inserting a plurality of ferromagnetic pellets into the posterior wall of the heart chamber;

(c) positioning a first electromagnetic field generator on a chest wall of the patient;

(d) positioning a second electromagnetic field generator on a back wall of the patient;

(e) generating a first electromagnetic field with the first electromagnetic field generator thereby pushing the diamagnetic pellets in the anterior wall away from the first electromagnetic field generator and pulling the ferromagnetic pellets in the posterior wall toward the first electromagnetic field generator to compress the heart chamber;

(f) discontinuing the first electromagnetic field generated by the first electromagnetic field generator;

(g) generating a second electromagnetic field with the second electromagnetic field generator thereby pulling the ferromagnetic pellets in the posterior wall toward the second electromagnetic field generator and pushing the diamagnetic pellets in the anterior wall away from the second electromagnetic field generator to relax the heart chamber;

(h) discontinuing the second electromagnetic field generated by the second electromagnetic field generator; and

(i) repeating cyclically steps (e)-(h).

6. The method of claim 5, wherein the heart chamber is the heart'"'"'s left ventricle.

7. The method of claim 5, wherein the pellets are inserted into the myocardium of the anterior and posterior walls.

8. The method of claim 5, further comprising the steps of:

(j) positioning an EKG monitor on the patient and generating a waveform of the heart'"'"'s electrical activity; and

(k) synchronizing the cyclical electromagnetic fields generated by the first and second electromagnetic field generators to correspond to the heart'"'"'s electrical activity.