Method and apparatus for monitoring heart function in a subcutaneously implanted device
First Claim
1. An implantable medical device for monitoring heart function of a patient'"'"'s heart, comprising:
- a housing portion enclosing operative circuitry of the device;
a plurality of electrodes, electrically coupled to the circuitry, configured for detecting cardiac depolarization events from one of a subcutaneous position extravascular and a submuscular position extravascular;
a sensor, electrically coupled to the circuitry, configured for detecting pressure waves corresponding to the heart function from one of a subcutaneous and a submuscular position extravascular;
a storage device storing data corresponding to the cardiac depolarizations and the pressure waves coupled to the operative circuitry; and
a control unit controlling the sensor and storage of the data in the storage device in response to one of the detected cardiac depolarizations and the detected pressure waves.
1 Assignment
0 Petitions
Accused Products
Abstract
A minimally invasive, implantable monitor and associated method for chronically monitoring a patient'"'"'s hemodynamic function based on signals sensed by one or more acoustical sensors. The monitor may be implanted subcutaneously or submuscularly in relation to the heart to allow acoustic signals generated by heart or blood motion to be received by a passive or active acoustical sensor. Circuitry for filtering and amplifying and digitizing acoustical data is included, and sampled data may be continuously or intermittently written to a looping memory buffer. ECG electrodes and associated circuitry may be included to simultaneously record ECG data. Upon a manual or automatic trigger event acoustical and ECG data may be stored in long-term memory for future uploading to an external device. The external device may present acoustical data visually and acoustically with associated ECG data to allow interpretation of both electrical and mechanical heart function.
-
Citations
38 Claims
-
1. An implantable medical device for monitoring heart function of a patient'"'"'s heart, comprising:
-
a housing portion enclosing operative circuitry of the device; a plurality of electrodes, electrically coupled to the circuitry, configured for detecting cardiac depolarization events from one of a subcutaneous position extravascular and a submuscular position extravascular; a sensor, electrically coupled to the circuitry, configured for detecting pressure waves corresponding to the heart function from one of a subcutaneous and a submuscular position extravascular; a storage device storing data corresponding to the cardiac depolarizations and the pressure waves coupled to the operative circuitry; and a control unit controlling the sensor and storage of the data in the storage device in response to one of the detected cardiac depolarizations and the detected pressure waves. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
5. The implantable medical device of 3, wherein the sensor includes a transmitter and a receiver, both the transmitter and the receiver positioned along one of the sensor assembly and the housing portion.
-
16. A method of monitoring heart function of a patient'"'"'s heart from one of a subcutaneous and a submuscular position extravascular, comprising the steps of:
-
detecting cardiac depolarizations from one of a subcutaneous and a submuscular position extravascular and storing data corresponding to the detected cardiac depolarizations in a first memory portion; determining whether a cardiac event is detected in response to the detected depolarizations; and detecting pressure waves corresponding to the heart function from one of a subcutaneous and a submuscular position extravascular, storing the data stored in the first memory portion and subsequently detected cardiac depolarizations and detected pressure waves in a second memory portion in response to a cardiac event being detected. - View Dependent Claims (17, 18, 19, 20)
-
-
21. An implantable medical device system device for monitoring heart function of a patient'"'"'s heart from one of a subcutaneous and a submuscular position, extravascular comprising:
-
a housing portion housing circuitry of the device; a plurality of electrodes, electrically coupled to the circuitry, adapted for detecting cardiac depolarizations from one of a subcutaneous and a submuscular position extravascular; a sensor, electrically coupled to the circuitry, adapted for detecting pressure waves corresponding to the heart function from one of a subcutaneous and a submuscular position;
extravasculara storage device storing data corresponding to the cardiac depolarizations and the pressure waves; a control unit controlling the sensor and storage of the data in the storage device in response to the detected cardiac depolarizations and the detected pressure waves; an external device receiving and processing the stored data from the storage device; and a display unit couple to the external device displaying the cardiac depolarizations and the pressure waves. - View Dependent Claims (22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
-
-
26. The implantable medical device of 24, wherein the sensor includes a transmitter and a receiver, both the transmitter and the receiver positioned along one of the sensor assembly and the housing portion.
-
38. An implantable medical device for monitoring heart function of a patient'"'"'s heart from one of a subcutaneous and a submuscular extravascular position, comprising the steps of:
-
means for detecting cardiac depolarizations from one of a subcutaneous and a submuscular extravascular position and storing data corresponding to the detected cardiac depolarizations in a first memory portion; means for determining whether a cardiac event is detected in response to the detected depolarizations; and means for detecting pressure waves corresponding to the heart function from one of a subcutaneous and a submuscular extravascular position storing the data stored in the first memory portion and subsequently detected cardiac depolarizations and detected pressure waves in a second memory portion in response to a cardiac event being detected.
-
Specification