This Rozrusznik serca icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
This image of a pacemaker has a small rectangle at the top with curved edges. In the upper half of the rectangle is a horizontal line running across the whole width of the rectangle, which represents the pacemaker. Coming off of the pacemaker is a single wire which splits into two , with small buds attached to the end of each.