A pneumatic control system for providing pressurized air and vacuum to ophthalmic microsurgical instruments. The pneumatic system is constructed in a drawer assembly to allow it to be readily inserted into or removed from a modularly construct ed cabinet of a microsurgical control console....http://www.google.es/patents/US5549139?utm_source=gb-gplus-sharePatente US5549139 - Pneumatic controls for ophthalmic surgical system
