Granted Patent
B2
US 12,239,839 · App. 18/446,671 · Granted Mar 4, 2025
Methods and apparatus to stimulate the heart
Assignee:
BackBeat Medical, LLC
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Abstract
A method and apparatus for treatment of hypertension and heart failure by increasing secretion of endogenous atrial hormones by pacing of the heart. Pacing is done during the ventricular refractory period resulting in premature atrial contraction that does not result in ventricular contraction. Pacing results in the atrial wall stress, peripheral vasodilation, ANP secretion. Concomitant reduction of the heart rate is monitored and controlled as needed with backup pacing.
Claims (27)
1. A device for controlling heart contraction to reduce blood pressure, the device comprising:
at least one electrically conductive lead configured to connect to a heart of a patient;
an electrical pulse generator connectable to the at least one electrically conductive lead and configured to:
allow for a first ventricular contraction of a ventricle of the heart,
apply first atrial pacing to the heart after an expiration of an atrial refractory period of the heart and during a ventricular refractory period of the heart, so as to cause an atrial contraction that does not propagate to a ventricular contraction and that causes a vasodilation and an atrial natriuretic peptide release in the heart,
monitor for a spontaneous heart beat after application of the first atrial pacing, and
apply second atrial pacing if a predetermined delay after the first ventricular contraction is longer than a predetermined period corresponding to a lowest selected heart rate,
wherein the second atrial pacing generates a second ventricular contraction.
2. The device of claim 1 , wherein the electrical pulse generator is configured to monitor a ventricular contraction rate resulting from the second atrial pacing, and to adjust an atrial pacing period based on the ventricular contraction rate.
3. The device of claim 1 , wherein the predetermined delay is between approximately 150 milliseconds and 300 milliseconds after the first ventricular contraction.
4. The device of claim 1 , wherein the electrical pulse generator is configured to adjust the predetermined delay based on a detected propagation of the second atrial pacing to a ventricle of the heart.
5. The device of claim 1 , wherein the electrical pulse generator is configured to apply the first atrial pacing by one of pacing a right atrium, pacing a left atrium, and pacing both the left and right atria, and to apply the second atrial pacing by one of pacing the right atrium, pacing the left atrium, and pacing both the left and right atria.
6. The device of claim 1 , wherein the lowest selected heart rate is less than approximately 50 beats per minute.
7. The device of claim 1 , wherein the electrical pulse generator is configured to sense the first ventricular contraction.
8. The device of claim 1 , wherein the electrical pulse generator is configured to allow for the first ventricular contraction by pacing the ventricle to produce the first ventricular contraction.
9. The device of claim 1 , wherein the electrical pulse generator is configured to periodically increase the predetermined delay to coincide with an expiration of the ventricular refractory period.
10. The device of claim 9 , wherein the electrical pulse generator is configured to set a time of the second atrial pacing to a time less than the expiration of the ventricular refractory period.
11. The device of claim 1 , wherein the electric pulse generator is configured to suspend application of the first atrial pacing and the second atrial pacing in response to a detected activity level of the patient that is above a predetermined threshold level.
12. The device of claim 11 , further comprising an activity sensor configured to detect the detected activity level of the patient.
13. The device of claim 1 , further comprising a sensor configured to sense the first ventricular contraction.
14. The device of claim 1 , wherein the electrical pulse generator is configured to apply the first atrial pacing in response to a sensed ventricular depolarization of the heart.
15. The device of claim 14 , further comprising a sensor configured to sense the sensed ventricular depolarization of the heart.
16. The device of claim 1 , wherein the electrical pulse generator is configured to apply the first atrial pacing upon expiration of a predetermined delay from a sensed ventricular depolarization of the heart.
17. The device of claim 16 , further comprising a sensor configured to sense the sensed ventricular depolarization of the heart.
18. The device of claim 1 , wherein the electrical pulse generator is configured to apply the first atrial pacing based on a sensed atrial depolarization of the heart.
19. The device of claim 18 , further comprising a sensor configured to sense the sensed atrial depolarization of the heart.
20. The device of claim 1 , wherein the electrical pulse generator comprises an implantable cardiac pacemaker.
Assignments (5)
SECURITY INTEREST
Recorded Aug 7, 2025
From: ORCHESTRA BIOMED HOLDINGS, INC.; ORCHESTRA BIOMED, INC.; BACKBEAT MEDICAL, LLC; CALIBER THERAPEUTICS, LLC
To: MEDTRONIC, INC.
Reel/Frame 072341/0075 →
SECURITY INTEREST
Recorded Aug 4, 2025
From: ORCHESTRA BIOMED HOLDINGS, INC.; ORCHESTRA BIOMED, INC.; BACKBEAT MEDICAL, LLC; CALIBER THERAPEUTICS, LLC
To: LIGAND PHARMACEUTICALS, INC.
Reel/Frame 072359/0219 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 9, 2023
From: G&L CONSULTING, LLC
To: BACKBEAT MEDICAL, INC.
Reel/Frame 064537/0173 →
ENTITY CONVERSION
Recorded Aug 9, 2023
From: BACKBEAT MEDICAL, INC.
To: BACKBEAT MEDICAL, LLC
Reel/Frame 064544/0009 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 9, 2023
From: LEVIN, HOWARD; GELFAND, MARK
To: G&L CONSULTING, LLC
Reel/Frame 064544/0048 →
Continuity (8)
Provisional Application
61095120
· Sep 8, 2008
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