The ornamental design for a feedbacksystem for chestcompressions, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front and top perspective view of a feedback system for chest compressions, showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof, with the right side view being a mirror image;
FIG. 4 is a front view thereof, with the electronic display turned off;