This device is dwarfed by a grain of rice, and can be injected into newborn babies with congenital heart diseases for temporary or long-term use with a regular syringe. About one in every 100 ...

The slip-on comes in wide and narrow size options, which you can make to fit even more snugly or loosely with its removable shearling liner. Without the liner, the insides have cork-latex footbeds ...