Intra cardiac pacer and method

• US 20040147973A1
• Filed: 06/26/2003
• Published: 07/29/2004
• Est. Priority Date: 06/27/2002
• Status: Abandoned Application

• Current Assignee: Robert G. Hauser
• Original Assignee: Robert G. Hauser
• Inventors: Hauser, Robert G.
• Application Number:
  US10/606,491
• Publication Number:
  US 20040147973A1
• Time in Patent Office: Days
• US Class Current: 607/36
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/37205 Microstimulators, e.g. implantable through a cannula
• CPC Class Codes: A61N 1/37288 Communication to several implantable medical devices within one patient
• CPC Class Codes: A61N 1/37512 Pacemakers
• CPC Class Codes: A61N 1/37518 Anchoring of the implants, e.g. fixation
• CPC Class Codes: A61N 1/3756 Casings with electrodes thereon, e.g. leadless stimulators

Abstract

An intracavitary pacemaker for implantation into a cardiac chamber or a portion of a cardiac chamber such as the left atrial appendage is disclosed. Both therapeutic and diagnostic pacing algorithms are available from the intracavitary electrode sites.

Claims

1. ) An intracardiac pacer comprising:

a hermetic housing containing, a power source, a pacing circuit module;

a resilient deployable shield adapted to conform to said housing during insertion and deployable to an expanded shape that engages and anchors said housing in an anatomic location inside the heart.

2. ) The device of claim 1 wherein said shield is made from a Nitinol mesh.

3. ) The device of claim 1 wherein said shield is made from a Dacron mesh.

4. ) The device of claim 1 wherein said power source is a lithium solid state cell.

5. ) The device of claim 1 wherein said power source is a rechargeable battery.

6. ) The device of claim 1 further comprising;

an electrode site located at the distal tip of said housing for sensing and pacing heart tissue.

7. ) The device of claim 1 further comprising a lead system extending from said distal end of said housing adapted for placement in the heart.

8. ) A method of treating the heart comprising:

inserting an ICP into the LAA;

monitoring the atrial beat in the LAA;

setting a timing interval based on the sensed depolarization of the atrium based on the signal in the LAA;

programming the ICP to a pacing modality that supplies electrical energy to the LAA in response to a detected atrial beat measured in the LAA.

9. ) The method of claim 8 further comprising:

placing at least one electrode in a chamber selected from the group;

LA, RA, LV, RV, and CS;

coupling said electrode to said ICP;

providing a pacing therapy from said ICP and said electrode.

10. ) The method of claim 8 further comprising:

a conventionally placed IPG coordinating its action with said ICP to provide dual chamber pacing therapy.

11. ) A method of treating a cardiac arrhythmia comprising the steps:

sensing an atrial depolarization from an electrode in the RA;

sensing the same depolarization from an electrode in LAA or RAA;

determine the conduction sequence and time interval between said measurements;

pacing a ventricle chamber if said measurement indicates a “

wide”

QRS.

12. ) A method of treating a cardiac arrhythmia comprising the steps:

sensing an atrial depolarization from an electrode in the RAA;

sensing the same depolarization from an electrode in LAA;

determine the conduction sequence and time interval between said measurements;

pacing the LA or LAA if said measurement indicates a “

wide”

atrial beat.

13. ) A method of treating a “

wide QRS”

cardiac arrhythmia comprising the steps;

sensing an atrial depolarization from an electrode in the RA;

sensing the same depolarization from an electrode in LAA;

determine the conduction sequence and time interval between said measurements;

pacing the LA or LAA if said measurement indicates a “

wide”

atrial beat and committed pacing of both LV and RV.