Controlling wireless communication in an implanted cardiac device
First Claim
1. A method for controlling wireless communication in an implanted cardiac medical device, the device being equipped with a wireless communications module, the device being anchored to a ventricular wall, and the method comprising:
- activating receiver elements of the communications module at predetermined intervals to receive an inbound activation signal;
monitoring ventricular wall motion, wherein the ventricular wall motion includes a first ventricular wall motion period and a second ventricular wall motion period having a reduced rate of motion relative to the first ventricular wall motion period;
detecting the presence of the second ventricular wall motion period; and
activating transmitter elements of the communications module for outbound communication only after both;
the inbound activation signal has been received and the second ventricular wall motion period has been detected.
1 Assignment
0 Petitions
Accused Products
Abstract
A relatively compact implantable cardiac medical device includes a wireless communications module, which employs a directional antenna and which is adapted to receive input concerning ventricular wall motion. When the cardiac medical device is anchored to a ventricular wall, transmitter elements of the communications modules are only activated for communication during a detected period of reduced ventricular wall motion. The period of reduced ventricular wall motion may be defined as at least one time interval during which an axis of the directional antenna does not rotate out from a baseline orientation by more than 15 degrees. The communication may be conducted with an external programmer-type device, or with another implanted device, for example, located remote from the heart.
106 Citations
29 Claims
-
1. A method for controlling wireless communication in an implanted cardiac medical device, the device being equipped with a wireless communications module, the device being anchored to a ventricular wall, and the method comprising:
-
activating receiver elements of the communications module at predetermined intervals to receive an inbound activation signal; monitoring ventricular wall motion, wherein the ventricular wall motion includes a first ventricular wall motion period and a second ventricular wall motion period having a reduced rate of motion relative to the first ventricular wall motion period; detecting the presence of the second ventricular wall motion period; and activating transmitter elements of the communications module for outbound communication only after both; the inbound activation signal has been received and the second ventricular wall motion period has been detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 24)
-
-
10. An implantable cardiac medical device configured to be wholly implanted at a cardiac site via anchoring to a ventricular wall, the device comprising a ventricular wall motion detector and a wireless communications module compatible for communication with another medical device;
- the communications module comprising receiver elements, transmitter elements and a controller, the controller adapted to receive input from the ventricular wall motion detector and being programmed to execute a method comprising the following steps;
activating the receiver elements at predetermined intervals to receive an inbound activation signal from the other medical device; monitoring a signal from the ventricular wall motion detector for ventricular wall motion, wherein the ventricular wall motion includes a first ventricular wall motion period and a second ventricular wall motion period having a reduced rate of motion relative to the first ventricular wall motion period; and only after both the inbound activation signal has been received and the second ventricular wall motion period has been detected. - View Dependent Claims (11, 12, 13, 14, 25)
- the communications module comprising receiver elements, transmitter elements and a controller, the controller adapted to receive input from the ventricular wall motion detector and being programmed to execute a method comprising the following steps;
-
15. A cardiac medical system comprising at least two devices, a first of the devices comprising a wireless communications module, and a second of the devices being configured to be wholly implanted at a cardiac site, via anchoring to a ventricular wall, and comprising a ventricular wall motion detector and a wireless communications module compatible for communication with the wireless communications module of the first device;
- the communications module of the second device comprising receiver elements, transmitter elements and a controller, the controller adapted to receive input from the ventricular wall motion detector and being programmed to execute a method comprising the following steps;
activating the receiver elements at predetermined intervals to receive an inbound activation signal; monitoring a signal from the ventricular wall motion detector for ventricular wall motion, wherein the ventricular wall motion includes a first ventricular wall motion period and a second ventricular wall motion period having a reduced rate of motion relative to the first ventricular wall motion period; and activating the transmitter elements for outbound communication only after both the inbound activation signal has been received and the second ventricular wall motion period has been detected. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 26)
- the communications module of the second device comprising receiver elements, transmitter elements and a controller, the controller adapted to receive input from the ventricular wall motion detector and being programmed to execute a method comprising the following steps;
-
27. An implantable cardiac medical device configured to be anchored to a ventricular wall, the device comprising a ventricular wall motion detector and a wireless communications module compatible for communication with another medical device;
- the communications module comprising receiver elements, transmitter elements and a controller, the controller adapted to receive input from the ventricular wall motion detector and being programmed to execute a method comprising the following steps;
activating the receiver elements at predetermined intervals to receive an inbound activation signal from the other medical device; monitoring from the ventricular wall motion detector a sinusoidal variation signal corresponding to motion of the ventricular wall; detecting a period of the sinusoidal variation signal corresponding to a diastolic interval; and activating the transmitter elements for outbound communication only after both the inbound activation signal has been received and the sinusoidal variation signal corresponding to the diastolic interval has been detected. - View Dependent Claims (28, 29)
- the communications module comprising receiver elements, transmitter elements and a controller, the controller adapted to receive input from the ventricular wall motion detector and being programmed to execute a method comprising the following steps;
Specification