JPH045122Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an operating lever rotatably provided outside the operating section of an endoscope.

[Prior Art] So-called endoscopic high-frequency treatment, in which treatment is performed using a high-frequency current using an endoscope, has been routinely performed in recent years. When performing this procedure, if the operator touches the metal part of the operating section, the high-frequency leakage current may cause burns. Therefore, the tip of the operating lever, which the operator's finger touches, is made of electrically insulating synthetic resin material.

[Problems to be solved by the invention] As mentioned above, the operating lever of the conventional endoscope is
The tip of the operating lever was made of an electrically insulating material such as a synthetic resin material, but the metal portion of the lever itself other than the tip was exposed. Therefore, there was a risk of burns if the operator touched the exposed metal part when performing some operations.
However, if the lever is made of synthetic resin, it will lack strength, and the lever will break due to repeated use.

This invention eliminates such conventional drawbacks and
To provide an operating lever for an endoscope that does not pose a risk of burns to an operator when performing high-frequency treatment and has sufficient strength.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the operating lever of the endoscope according to the present invention is a metal lever rotatably provided outside the operating section of the endoscope. The lever body is characterized in that all surfaces other than at least the back surface of the lever body are tightly covered with an exterior made of an electrically insulating synthetic resin material.

[Function] All surfaces of the operating lever except the back surface are covered with an electrically insulating exterior, so even if the operator's hand touches the lever during endoscopic high-frequency treatment, High-frequency leakage current does not reach the operator's hands.

[Example] FIG. 5 is an overall perspective view of an endoscope, in which 1 is an operating section, 2 is an insertion section covered with a flexible tube, and 3 is an overall perspective view of an endoscope.
Reference numeral 4 indicates a bending portion that is bendably formed at the distal end of the insertion portion 2 and can be bent by remote control, and 4 indicates a distal end main body in which an objective optical system and the like are incorporated. Reference numeral 5 denotes a bending operation lever rotatably provided on the outside of the operating section 1 by a shaft 6. By rotating this lever 5, a bending operating device (not shown) provided inside the operating section 1 is activated. ) is activated to bend the bending portion 3. This bending operation lever 5 is provided so that it can be moved within the range indicated by arrow A. 7 is an eyepiece.

FIG. 1 is a longitudinal sectional view of the bending operation lever 5, FIG. 2 is a perspective view, and FIG. 3 is a sectional view taken along the line -- in FIG. Reference numeral 8 denotes a lever body formed in a substantially L-shape from a metal material such as a stainless steel plate, and is fixed to the shaft 6 by caulking, brazing, or the like. All surfaces other than the back surface 8a are covered with an electrically insulating exterior 9 made of, for example, a synthetic resin material. The exterior 9 and the lever body 8 may be manufactured as separate parts and then joined by adhesive or the like, or they may be integrally formed by inserting the lever body 8 at the same time when the exterior 9 is heated and molded. It may be. There is a finger rest 10 on the L-shaped bent end of the exterior 9.
is formed, and knurled grooves are formed on its surface to prevent slipping.

The bending operation lever 5 of this embodiment formed in this manner has all surfaces other than the back surface 8a covered with an electrically insulating exterior 9, so that it can be easily used during endoscopic high-frequency treatment. Even if the operator's hand touches the lever 5, the high frequency leak current does not reach the operator's hand.

It should be noted that the present invention is not limited to the structure shown in the above-mentioned embodiments. For example, as shown in FIG. good. Further, the operating lever to which the present invention is applied is not limited to a curved operating lever, but may be applied to a curved lock lever that adds a brake to a bending operation or other levers.

[Effects of the invention] According to the endoscope operating lever of this invention, at least all surfaces other than the back surface of the operating lever are covered with an electrically insulating exterior, making it possible to perform endoscopic high-frequency treatment. Even if the operator's hand touches the lever while the device is in use, there will be no accidental burns, and electrical safety is high. Moreover, since the inside of the exterior is made up of a metal lever body, even if a large operating force is applied to the operating lever, it is possible to ensure sufficient strength to withstand it. Furthermore, since the lever body is tightly covered with an exterior made of synthetic resin material, the exterior considerably supplements the strength of the lever body, and as a result, sufficient durability is achieved even if the lever body is made thinner to some extent. This has the excellent effect of maintaining electrical safety and mechanical strength while maintaining the necessary operating angle and good operability without increasing the overall size.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an operating lever according to an embodiment of the present invention, Fig. 2 is a perspective view thereof, Fig. 3 is a sectional view taken along the line - - of Fig. 1, and Fig. 4 is another embodiment of the operating lever. An example cross-sectional view, FIG. 5, is an overall perspective view of the endoscope. 1... Operation unit, 5... Curved operation lever, 6...
Shaft, 8, 18... Lever body, 8a... Back side,
9,19...Exterior.

Claims (1)

[Scope of utility model registration request] A metal lever body rotatably provided outside the operating section of the endoscope is characterized in that all surfaces other than at least the back surface are closely covered with an exterior made of an electrically insulating synthetic resin material. The operating lever of the endoscope.