Endoscopic apparatus having a bendable insertion section
First Claim
Patent Images
1. An endoscopic apparatus comprising:
- an operating section;
a flexible insertion section extending from the operating section and adapted to be inserted into the body cavity and bent in a predetermined direction, said insertion section including a channel extending from the operating section to the distal end of the insertion section;
a stylet including a sheath removably inserted in the channel and extending to the distal end of the insertion section, said sheath having a bendable portion located in the distal end portion of the insertion section, and operating means for remotely bending the bendable portion of the sheath from the operating section side to bend the distal end portion of the insertion section; and
positioning means for positioning the bendable portion of the sheath in the distal end portion of the insertion section so that the bendable portion is bent in the predetermined direction.
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Abstract
An endoscopic apparatus includes an insertion section extending from an operating section and having a channel extending from the operating section to the distal end of the insertion section. The insertion section is adapted to be bent in a predetermined direction. A sheath is removably inserted into the channel and has a bendable portion located in the distal end portion of the insertion section. The bendable portion is remotely bent by an operating mechanism from the operating section to bend the distal end portion of the insertion section. The sheath is positioned in the insertion channel by a positioning mechanism so that the bendable portion is bent in the predetermined direction.
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Citations
18 Claims
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1. An endoscopic apparatus comprising:
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an operating section; a flexible insertion section extending from the operating section and adapted to be inserted into the body cavity and bent in a predetermined direction, said insertion section including a channel extending from the operating section to the distal end of the insertion section; a stylet including a sheath removably inserted in the channel and extending to the distal end of the insertion section, said sheath having a bendable portion located in the distal end portion of the insertion section, and operating means for remotely bending the bendable portion of the sheath from the operating section side to bend the distal end portion of the insertion section; and positioning means for positioning the bendable portion of the sheath in the distal end portion of the insertion section so that the bendable portion is bent in the predetermined direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An endoscopic apparatus comprising:
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an operating section; a flexible insertion section extending from the operating section and adapted to be inserted into body cavity and bent in a predetermined direction, said insertion section including a channel extending from the operating section to the distal end of the insertion section; a stylet including a sheath removably inserted in the channel and extending to the distal end of the insertion section, said sheath having a bendable portion located in the distal end portion of the insertion section, and operating means for remotely bending the bendable portion of the sheath from the operating section side to bend the distal end portion of the insertion section, the operating means including first and second operating wires inserted in the sheath and each having one end fixed to the distal end of the sheath and eccentric to a central axis of the sheath, and the other end extending to the rear end of the sheath, and means connected to the other ends of the first and second operating wires for pushing and pulling the wires; and positioning means for positioning the sheath in the insertion section so that the bendable portion is bent in the predetermined direction. - View Dependent Claims (14)
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15. An endoscopic apparatus comprising:
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an operating section; a flexible insertion section extending from the operating section and adapted to be inserted into the body cavity and bent in a predetermined direction, said insertion section including a channel extending from the operating section to the distal end of the insertion section, said channel including a channel opening at the distal end of the insertion section, said opening having a non-circular configuration; a stylet including a sheath removably inserted in the channel and extending to the distal end of the insertion section, said sheath having a bendable portion located in the distal end portion of the insertion section, and operating means for remotely bending the bendable portion of the sheath from the operating section side to bend the distal end portion of the insertion section; and positioning means for positioning the sheath in the insertion section so that the bendable portion is bent in the predetermined direction, said positioning means including a distal cap fixed to the distal end portion of the sheath, said cap having a cross section similar to and a little smaller than the opening and removably fitted in the opening. - View Dependent Claims (16, 17, 18)
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Specification