#$%^&*AU2010100504B420160721.pdf#####ABSTRACT OF THE DISCLOSURE A videoscope preheater for preheating an endoscope includes: a support tube an electrical heating layer uniformly coated on an outer surface of the support tube, one side of the electrical heating layer being connected with a power cable for connecting with an external power supply and a capsule layer coated on an outer surface of the electrical heating layer for fixing and protecting the electrical heating layer and the power cable. The capsule layer is a thermally contractible capsule film, which is fitted around the electrical heating layer and then heated to contract for insulating the electrical heating layer and the support tube from ambient environment. In use, the endoscope is fitted into the support tube and the electrical heating layer is powered on to generate heat and uniformly heat the endoscope. The heating efficiency of the videoscope preheater is controllable by means of adjusting the current and voltage input. 12
