Patent ID: 6958036

Claim:
An endoscopic manual control knob suitable for use on an endoscope for manipulation of an insertion instrument, said manual control knob being of the sort having a knob body of synthetic resin molding largely constituted by a ring-like top plate and a peripheral wall portion of a predetermined width formed integrally along marginal edges of said top plate, an aperture perforated centrally through said top plate, a plural number of lever portions projected radially outward from angularly spaced positions around outer periphery of said top plate, each one of said lever portions being provided with a finger grip surface at an outer distal end, and said aperture of said top plate being fitted on a rotating shaft projected from a manipulating head assembly of said endoscopic insertion instrument, characterized in that: said knob body is constituted by a synthetic resin molding having said top plate and said peripheral side wall portion molded integrally with each other and having implant blocks embedded in said lever portions of said top plate by insertion molding; said implant blocks are provided as an insert member having implant blocks connected to outer distal ends of connecting arms extending radially outward from a central core portion in the fashion of spokes; and cover wall portions are formed integrally with said knob body to enshroud said implant blocks completely on a lower back side of said knob body facing away from said top plate.