The invention provides for ischemiareperfusion protection compositions having one or more ketone bodies and melatonin. The shield is particularly useful with winged needle assemblies. A controller is configured to apply electronic pulses to at least one driving device to oscillate the mirror in the module around the rotational axis at a scanning frequency different than a resonance frequency of the mirror. When the tool is removed the gem locks in place. The apparatus may include a separate coupling structure for attaching adjacent stamps to each other. The shelf component is separate from the rain gutter component.