Method and device for the intermittent occlusion of the coronary sinus
In a method for intermittently occluding the coronary sinus, in which the coronary sinus is occluded using an occlusion device, the fluid pressure in the occluded coronary sinus is continuously measured and stored, the fluid pressure curve is determined as a function of time, and the occlusion of the coronary sinus is triggered and/or released as a function of at least one characteristic value derived from the measured pressure values. The pressure increase and/or pressure decrease per time unit each occurring at a heart beat are used as characteristic values.
1. A method for the intermittently occluding a coronary sinus in a heart, comprising:
inserting a multi-lumen catheter having an occlusion device along a distal end into a coronary sinus of a heart via an atrium;
occluding the coronary sinus of the heart with the occlusion device along the distal end of the multi-lumen catheter, wherein the multi-lumen catheter is connected to a pressure measuring device that measures a fluid pressure in the occluded coronary sinus when the occlusion device occludes of the coronary sinus, and the pressure measuring device is in communication with a memory that stores data indicative of a fluid pressure curve as a function of time based upon the measured fluid pressure in the occluded coronary sinus when the occlusion device occludes the coronary sinus; and
releasing the occlusion of the coronary sinus caused by the occlusion device in response to control circuitry that determines a pressure increase and/or pressure decrease per time unit while the coronary sinus is occluded and that cooperates with the occlusion device to release the occlusion of the coronary sinus based at least in part on the pressure increase and/or pressure decrease per time.
2. The method of claim 1 , wherein the control circuitry is configured to determine the pressure increase per time unit occurring at consecutive heart beats and to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is released after the pressure increase per time unit of consecutive heart beats has reached a maximum.
3. The method of claim 1 , wherein the control circuitry is configured to determine a first derivative of the fluid pressure curve based upon the data stored in the memory that is indicative of the fluid pressure curve as the function of time.
4. The method of claim 3 , wherein the control circuitry is configured to determine the first derivative of the fluid pressure curve with respect to time as well as a local maximum of the first derivative occurring within a heart beat, and the control circuitry being configured to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is released after the local maxima of consecutive heart beats have reached a maximum.
5. The method of claim 1 , further comprising triggering the occlusion of the coronary sinus using the occlusion device along the distal end of the multi-lumen catheter, wherein the control circuitry is configured to determine the pressure decrease per time unit occurring at consecutive heart beats and to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is triggered after the pressure decrease per time unit of consecutive heart beats has reached a minimum.
6. The method of claim 5 , wherein the control circuitry is configured to determine a first derivative of the fluid pressure curve with respect to time as well as a local minimum of the first derivative occurring within a heart beat, and the control circuitry being configured to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is triggered after the local minima of consecutive heart beats have reached a minimum.
7. The method of claim 6 , wherein the control circuitry is configured to deliver control signals to the pump so as to start and stop the pump when connected to the balloon inflation lumen.
8. The method of claim 1 , wherein the multi-lumen catheter comprises a balloon inflation lumen that is connectable to a pump.
9. The method of claim 1 , wherein the pressure measuring device measures systolic pressure peaks occurring at consecutive heart beats while the coronary sinus is occluded.
10. The method of claim 9 , wherein the pressure measuring device measures diastolic pressure valleys in the coronary sinus occurring between the systolic pressure peaks.
11. A method for the intermittently occluding a coronary sinus in a heart, comprising:
inserting a multi-lumen catheter having an occlusion device along a distal end into a coronary sinus of a heart via an atrium; and
occluding the coronary sinus of the heart with the occlusion device along the distal end of the multi-lumen catheter, the multi-lumen catheter being connected to a pressure measuring device that measures a fluid pressure in the occluded coronary sinus when the occlusion device occludes of the coronary sinus, and the pressure measuring device being in communication with a memory that stores data indicative of a fluid pressure curve as a function of time based upon the measured fluid pressure in the occluded coronary sinus when the occlusion device occludes the coronary sinus,
wherein the occlusion device is triggered to occlude the coronary sinus in response to control circuitry that determines a pressure increase and/or pressure decrease per time unit while the coronary sinus is occluded and that cooperates with the occlusion device to trigger the occlusion of the coronary sinus based at least in part on the pressure increase and/or pressure decrease per time unit.
12. The method of claim 11 , further comprising releasing the occlusion of the coronary sinus caused by the occlusion device, wherein the control circuitry is configured to determine the pressure increase per time unit occurring at consecutive heart beats and to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is released after the pressure increase per time unit of consecutive heart beats has reached a maximum.
13. The method of claim 12 , wherein the control circuitry is configured to determine a first derivative of the fluid pressure curve with respect to time as well as a local minimum of the first derivative occurring within a heart beat, and the control circuitry being configured to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is released after the local maxima of consecutive heart beats have reached a maximum.
14. The method of claim 11 , wherein the control circuitry is configured to determine the pressure decrease per time unit occurring at consecutive heart beats and to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is triggered after the pressure decrease per time unit of consecutive heart beats has reached a minimum.
15. The method of claim 14 , wherein the control circuitry is configured to determine a first derivative of the fluid pressure curve with respect to time as well as a local minimum of the first derivative occurring within a heart beat, and the control circuitry being configured to cooperate with the occlusion device in a manner that the occlusion of the coronary sinus is triggered after the local minima of consecutive heart beats have reached a minimum.
16. The method of claim 11 , wherein the multi-lumen catheter comprises a balloon inflation lumen that is connectable to a pump.
17. The method of claim 16 , wherein the control circuitry is configured to deliver control signals to the pump so as to start and stop the pump when connected to the balloon inflation lumen.
18. The method of claim 11 , wherein the pressure measuring device measures systolic pressure peaks occurring at consecutive heart beats while the coronary sinus is occluded.
19. The method of claim 18 , wherein the pressure measuring device measures diastolic pressure valleys in the coronary sinus occurring between the systolic pressure peaks.