The present invention discloses a camera holder device and mechanism for laparoscopic surgery. The camera holder device is easily installed and disassembled, comfortable to use, not limiting the dexterity of the surgeon, having small physical dimension and inexpensive. Furthermore, the present invention relates to means and methods for improving the interface between the surgeon and the operating medical assistant or between the surgeon and an endoscope system for laparoscopic surgery.. Moreover, this present invention discloses a device useful for controlling an endoscope system for laparoscopic surgery, in which the endoscope is inserted through a small incision into the body's cavities.