Intracardial electrode line and cardiac stimulator
The invention relates to an intracardial implantable electrode line for connection to an implantable medical device, in particular a cardiac pacemaker or cardioverter/defibrillator or the like, which has an acceleration sensor in the area of its distal end, which is implemented to record and differentiate acceleration values in at least two different directions. The invention additionally relates to a cardiac stimulation configuration which also has a cardiac stimulator in addition to such an electrode line.
1. A cardiac stimulation configuration having:
an electrode line comprising
an electrical conductor;
a proximal end, which is implemented to connect the electrode line to an implantable medical device;
a distal end, which comprises
at least one electrode coupled with said electrical conductor and implemented to deliver stimulation pulses or record intracardial electrical signals, and
an acceleration sensor, wherein the acceleration sensor is implemented to record and differentiate acceleration values in at least two different directions;
a radioopaque or echogenic section associated with said distal end;
an implantable cardiac stimulator having
a housing;
a further acceleration sensor that is integrated in the housing of the implantable cardiac stimulator and wherein the further acceleration sensor is implemented to record and differentiate acceleration values in said at least two different directions and wherein said further acceleration sensor is configured to detect movement associated with physical activity of a patient;
an analysis unit, which is at least indirectly connected to the acceleration sensor and the further acceleration sensor wherein said analysis unit is configured to
analyze output signals from said acceleration sensor in relation to said output signals from said further acceleration sensor to compensate for said movement associated with said physical activity of said patient in which said electrode line is implanted to determine distance between said acceleration sensor and said further acceleration sensor that is independent of said physical activity of said patient;
correlate said output signals from said acceleration sensor in said electrode line to hemodynamic findings obtained from a stress/echocardiography test on said patient that utilizes said radioopaque or echogenic section associated with said distal end of said electrode line to calibrate said output signals.
2. The electrode line according to claim 1 , further comprising:
a plug contact on the proximal end and an electrical line, which electrically connects a contact surface of the plug contact to the at least one electrode,
wherein the acceleration sensor is connected to a modulator, and wherein the modulator is connected to the electrical line, and wherein the modulator is implemented to provide an output signal of the acceleration sensor in modulated form to the electrical line.
3. The electrode line according to claim 1 , wherein the acceleration sensor is connected to a transmitter for wireless transmission of output signals of the acceleration sensor.
4. The electrode line according to claim 1 , wherein the electrode line is implemented for implantation through a coronary sinus.
5. The cardiac stimulation configuration according to claim 1 wherein said analysis unit is further implemented to analyze a particular accelerometer output signal by a comparison to reference curves stored in the cardiac stimulator, wherein the stored reference curves have been obtained under defined conditions.
6. The cardiac stimulation configuration of claim 1 further comprising at least one additional electrode line and wherein said electrode line is configured as a left-ventricular electrode line and said at least one additional electrode line is configured as a right-ventricular electrode line.
7. The cardiac stimulation configuration of claim 1 further comprising a modulator coupled with said electrode line and also coupled with said accelerometer wherein said accelerometer outputs acceleration values in said at least two different directions on said electrode line through said modulator.
8. A cardiac stimulation configuration having:
an electrode line comprising
an electrical conductor;
a proximal end, which is implemented to connect the electrode line to an implantable medical device;
a distal end, which comprises
at least one electrode coupled with said electrical conductor and implemented to deliver stimulation pulses or record intracardial electrical signals, and
an acceleration sensor, wherein the acceleration sensor is implemented to record and differentiate acceleration values in at least two different directions;
an implantable cardiac stimulator having
a housing;
a further acceleration sensor that is integrated in the housing of the implantable cardiac stimulator and wherein the further acceleration sensor is implemented to record and differentiate acceleration values in said at least two different directions and wherein said further acceleration sensor is configured to detect movement associated with physical activity of a patient;
an analysis unit, which is at least indirectly connected to the acceleration sensor and the further acceleration sensor wherein said analysis unit is configured to
analyze output signals from said acceleration sensor in relation to said output signals from said further acceleration sensor to compensate for said movement associated with said physical activity of said patient in which said electrode line is implanted to determine distance between said acceleration sensor and said further acceleration sensor that is independent of said physical activity of said patient.
9. The cardiac stimulation configuration according to claim 8 wherein said analysis unit is further implemented to analyze a particular accelerometer output signal by a comparison to reference curves stored in the cardiac stimulator, wherein the stored reference curves have been obtained under defined conditions.
10. The cardiac stimulation configuration of claim 8 further comprising at least one additional electrode line and wherein said electrode line is configured as a left-ventricular electrode line and said at least one additional electrode line is configured as a right-ventricular electrode line.
11. The cardiac stimulation configuration of claim 8 further comprising a modulator coupled with said electrode line and also coupled with said accelerometer wherein said accelerometer outputs acceleration values in said at least two different directions on said electrode line through said modulator.