Adjustable cardiac resynchronization
First Claim
Patent Images
1. A method comprising:
- providing cardiac resynchronization to a heart in response to a first sensed event; and
refraining from providing cardiac resynchronization to the heart in response to a second sensed event further comprising;
receiving a ratio of X;
Y; and
performing cardiac resynchronization X times for every Y sensed cardiac events.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques are presented for providing adjustable cardiac resynchronization with an implanted medical device such as a pacemaker. For example, cardiac resynchronization may be provided during some time periods but not during other time periods, or cardiac resynchronization may be provided in response to selected sensed events. Adjustable cardiac resynchronization is applicable to therapy such as bi-ventricular pacing, in which both ventricles of the heart are paced in response to sensed atrial events.
79 Citations
16 Claims
-
1. A method comprising:
-
providing cardiac resynchronization to a heart in response to a first sensed event; and
refraining from providing cardiac resynchronization to the heart in response to a second sensed event further comprising;
receiving a ratio of X;
Y; and
performing cardiac resynchronization X times for every Y sensed cardiac events. - View Dependent Claims (2)
-
-
3. A method comprising:
-
sensing an atrial event;
determining whether a bi-ventricular pace is indicated; and
delivering a bi-ventricular pace after the atrial event when the bi-ventricular pace is indicated and further comprising receiving a ratio of X;
Y, wherein the bi-ventricular pace is indicated X times for every Y sensed atrial events.
-
-
4. A method comprising:
-
sensing an atrial event;
determining whether a bi-ventricular pace is indicated; and
delivering a bi-ventricular pace after the atrial event when the bi-ventricular pace is indicated and further comprising receiving a time period, wherein the bi-ventricular pace is indicated for atrial events occurring in the time period.
-
-
5. A method comprising:
-
receiving a ratio of X;
Y;
sensing a cardiac event; and
applying a synchronized cardiac pace in response to the cardiac event, wherein X represents a number of synchronized cardiac paces, wherein Y represents a number of sensed cardiac events, and wherein X is less than Y. - View Dependent Claims (6, 7, 8, 9)
-
-
10. A device comprising:
-
a pacing circuit that applies cardiac resynchronization to a heart; and
a processor that controls the pacing circuit to apply the cardiac resynchronization during a first period and refrain from applying the cardiac resynchronization during a second time period and further comprising memory that stores the duration of the first period.
-
-
11. A device comprising:
-
a pacing circuit that applies a synchronized cardiac pace to a heart;
a processor that senses a cardiac event and controls the pacing circuit to apply the synchronized cardiac pace in response to the cardiac event; and
memory that stores a ratio X;
Y,wherein X represents a number of synchronized cardiac paces, wherein Y represents a number of sensed cardiac events, and wherein X is less than Y. - View Dependent Claims (12, 13, 14)
-
-
15. A computer-readable medium containing instructions, the instructions causing a programmable processor to:
-
provide cardiac resynchronization to a heart in response to a first sensed event; and
refrain from providing cardiac resynchronization to the heart in response to a second sensed event wherein the instructions further causing a programmable processor to;
receive a ratio of X;
Y; and
perform cardiac resynchronization X times for every Y sensed cardiac events. - View Dependent Claims (16)
-
Specification