| 摘要 |
<p>A structure for preventing the breakage of both end portions of a protective covering for an adjustable bend section (4) of an endoscope consists of annular elastic members (24, 25) retaining elasticity and adhesivity even at high temperature. Each of the elastic members (24, 25) of the structure comprises a first section (24a, 25a) which is fixed by thread (20,21) to the respective end portion (10a, 10b) of a protective covering (10) which is made of elastic material and surrounds a core assembly (9), and the respective end portion (10a, 10b) of which is fastened to the respective end portions of the core assembly (9) by the thread (20, 21); and a second section (26, 27) which is made of the same material as that of the first section (24a, 25a) and extends from the first section (24a, 25a) toward the intermediate part of the protective covering (10) to be fixed to the respective end portion (10a, 10b) of the protective covering (10). With the above-mentioned structure, the annular elastic members (24, 25) are not deteriorated even at high temperature.</p> |
