Method and apparatus for defining the effect of atrial arrhythmias on cardiac performance and directing therapy using a plurality of intrinsically and extrinsically derived signals

• US 7,963,925 B1
• Filed: 03/15/2007
• Issued: 06/21/2011
• Est. Priority Date: 01/26/2005
• Status: Active Grant

• Current Assignee: Stuart Schecter, LLC
• Original Assignee: Stuart O. Schecter
• Inventors: Schecter, Stuart O.
• Primary Examiner(s): Getzow; Scott M
• Assistant Examiner(s): Dietrich; Joseph M
• Application Number:
  US11/686,602
• Time in Patent Office: 1,559 Days
• Field of Search: 600/508, 600/527
• US Class Current: 600/508
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/029 Measuring or recording blood output from the heart, e.g. minute volume A61B8/065 takes precedence
• CPC Class Codes: A61B 8/08 Detecting organic movements or changes, e.g. tumours, cysts, swellings A61B8/02 - A61B8/06 take precedence
• CPC Class Codes: A61N 1/3627 for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators

Abstract

This invention describes methods and algorithms for processing a plurality of relevant signals/data intrinsic to a patient and/or derived from external diagnostic equipment for management of atrial arrhythmias. The intrinsic signals are acquired from intracardiac leads/sensors and analogous extrinsic data obtained from imaging equipment and patient demographics. These data are input into software algorithms that use digital signal processing to output informational data of clinical and technical relevance after comparisons are made to patients with access to this technology whose outcome under varying treatments is known. These combined data are used to define prognosis, make treatment suggestions, direct programming of cardiac devices and digitally convert intrinsically and extrinsically derived indices into a common metric. In a preferred embodiment, the intrinsically and extrinsically acquired data is utilized in the design of catheters and software algorithms for performing intracardiac procedures such as ablation of atrial arrhythmias.

Claims

1. A cardiac system comprising:

a catheter having a distal end and a proximal end, said distal end including a sensor configured to contact a portion of a cardiac tissue when said catheter is inserted into said patient, said sensor being configured to sense real time motion of said portion, said real time motion having a real time motion parameter and to generate a corresponding sensor signal having a sensor signal characteristic with a magnitude dependent on said real time motion parameter, said proximal end having a component providing at least one of a vibratory and motion sensation to the hand of an operator holding the handle; and

a processor receiving said sensor signal and transforming said sensor signal into respective haptic representation of the motion of the tissue by driving said component, said haptic representation having an amplitude dependent on the magnitude of said real time parameter.

2. The cardiac system of claim 1 further comprising an external sensor monitoring the cardiac tissue externally and a display generating a corresponding real time image of the position of said distal end.

3. The system of claim 2 wherein said external sensor monitors the cardiac tissue using at least one of ultrasonic, electromagnetic, magnetic, radiographic waves, electrical, impedance data.

4. The system of claim 1 wherein said processor and said component cooperate to generate said haptic representation of at least one cardiac parameter selected from the group consisting of cardiac wall displacement magnitude, cardiac wall velocity, cardiac wall acceleration, blood flow, cardiac acoustic signals, cardiac rotation/torsion, cardiac tissue vibration, frequency of motion, cardiac arrhythmia, cardiac structure and cardiac geometry.

5. The system of claim 1 wherein said internal sensor generates sensor signals indicative of at least one of tissue motion at various frequencies and a motion vector having a magnitude and an angle.

6. The cardiac system of claim 1 wherein said processor is configured to drive said component to provide one of said translation, rotation and vibration wherein said translation, rotation or vibration is proportional to the translation, rotation and vibration of the respective tissue.

7. The cardiac system of claim 1 wherein said haptic representation is indicative of the frequency of the motion of said cardiac tissue.

8. A cardiac system comprising:

a catheter having a distal end and a proximal end, said distal end including a sensor configured to contact a portion of a cardiac tissue when said catheter is inserted into said patient, said sensor is configured to generate sensor signals indicative of a sensed parameter of the real time motion of said portion, said sensed parameter having a real time sensed amplitude, said proximal end having a component providing at least one of a vibratory and motion sensation to the hand of an operator holding the handle, said sensation having a sensation parameter; and

a processor receiving said sensor signal and transforming said sensor signal into a respective haptic representation of at least one cardiac parameter, said cardiac parameter being selected from the group consisting of cardiac wall displacement magnitude, cardiac wall velocity, cardiac wall acceleration, blood flow, cardiac acoustic signals, cardiac rotation/torsion, cardiac tissue vibration, frequency of motion, cardiac arrhythmia, cardiac structure and cardiac geometry, said processor driving said component with said sensation parameter as said sensation parameter.