Patent ID: 8617059

Claim:
An endoscopic apparatus comprising: an endoscopic insertion section configured to be inserted into an object to be inspected; and an endoscopic adapter configured to be detachably attached to a distal end of the endoscopic insertion section, wherein the endoscopic insertion section includes: an insertion section attachment surface being disposed to a distal end face of the endoscopic insertion section; an insertion section electrode section which is provided in a bottomed cylindrical recess formed on the insertion section attachment surface and is electrically connected to a power supply; and an insertion section insulating member which is provided on the insertion section electrode section so as to surround a periphery of the insertion section electrode section; wherein the endoscopic adapter includes: an attachment hood which detachably connects the endoscopic adapter by fitting the distal end of the endoscopic insertion section; an adapter main body which has a first member having an adapter-mounting surface provided in the attachment hood, and a cylindrical-shaped second member which contains the first member therein; an adapter electrode section configured to be electrically and directly connected to the insertion section electrode section when the endoscopic adapter is attached to the endoscopic insertion section and has a hollow casing, a coil spring, and an electrode terminal; an adapter insulating member being disposed so as to surround a periphery of the adapter electrode section; an electrode-mounting hole which is formed on the adapter mounting surface and has a step section on which the adapter insulating member is positioned and fixed, the hollow casing is an elongated electro-conductive member having an opening section formed at one end of the longitudinal direction thereof and has a configuration in which a flange section is formed on the opening section to prevent the electrode terminal from detaching, and the coil spring and the electrode terminal are slidably disposed in the hollow casing, the coil spring is an electro-conductive member which biases the electrode terminal that is slidably disposed in the hollow casing, the electrode terminal is an elongated electro-conductive member, in which a terminal tip section having an outer diameter that is set to be the same as an inner diameter of the flange section and a terminal base end section which is slidably disposed in the hollow casing and has an outer diameter that is set to be the same as the inner diameter of the hollow casing and larger than the inner diameter of the flange section, are formed in a longitudinal direction, and the electrode terminal biased by the coil spring has a configuration in which the terminal base end section is in contact with the flange section and thus the terminal tip section is capable of projecting from the opening section of the hollow casing.