A video image display is attached to a video endoscopic surgical component such as video endoscope, an endoscopic surgical instrument, a carrier for coupling the endoscope and the instrument, or a cannula through which the endoscope or the instrument is passed into a body part. Attachment is by means...http://www.google.co.uk/patents/US5928137?utm_source=gb-gplus-sharePatent US5928137 - System and method for endoscopic imaging and endosurgery
