Bending device for an endoscope
First Claim
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1. A bending device for an endoscope including:
- a coil sheath housed within the insertable portion thereof and an operating wire inserted in said coil sheath for connecting a bendable portion on the distal end side of said insertable portion and a bending operating portion on the proximal end side of the endoscope, characterized by;
fixing means for fixing the distal end of said coil sheath on the bendable portion side so as not to rotate around its axis; and
a coil lock member secured to the proximal end of the coil sheath at the operating side; and
a coil lock holder disposed at the operating side and having an engagement portion which engages with said coil lock member to prevent the coil lock member from rotating around its axis.
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Abstract
A bending device for an endoscope operates the bendable portion on the front end side of the insertable portion of the endoscope to bend by moving back and forth an operating wire which is inserted in a coil sheath housed within the insertable portion to connect the bendable portion and an operation portion for bending on the rear end side of the endoscope. The bending device prevents a relative looseness between the coil sheath and the operating wire by fixing the coil sheath at its end on the bendable portion side so as not to rotate around its axis and controlling rotation of the coil sheath at the other end on the operating portion side around the axis thereof within a limit.
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Citations
6 Claims
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1. A bending device for an endoscope including:
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a coil sheath housed within the insertable portion thereof and an operating wire inserted in said coil sheath for connecting a bendable portion on the distal end side of said insertable portion and a bending operating portion on the proximal end side of the endoscope, characterized by; fixing means for fixing the distal end of said coil sheath on the bendable portion side so as not to rotate around its axis; and a coil lock member secured to the proximal end of the coil sheath at the operating side; and a coil lock holder disposed at the operating side and having an engagement portion which engages with said coil lock member to prevent the coil lock member from rotating around its axis. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification