Bending insertion instrument to be inserted into a body cavity through an endoscope
First Claim
1. An endoscope apparatus comprising:
- an endoscope having a distal end, a port at the distal end, and a channel extending through said endoscope to the distal end and communicating with the port; and
a bending insertion instrument extensible through the channel and through the port, the bending insertion instrument comprising;
angle wires provided in a distal end side of the bending insertion instrument, andshape memory alloy wires connected to proximal end portions of the angle wires, andwherein the bending insertion instrument is inserted through the channel of the endoscope such that a portion of the bending insertion instruments, which is located on the distal end side of the bending insertion instrument and which includes the angle wires therein, is projected through the port.
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Abstract
An endoscope apparatus includes an endoscope having a distal end, a port at the distal end, and a channel extending through the endoscope to the distal end and communicating with the port; and a bending insertion instrument extensible through the channel and the port. The bending insertion instrument includes angle wires provided at a distal end portion of the bending insertion instrument, and shape memory alloy wires connected to proximal end portions of the angle wires, the angle wires having a lower electrical resistance than an electrical resistance of the shape memory alloy wires. The bending insertion instrument is inserted through the channel of the endoscope such that a portion of the bending insertion instrument, which includes the shape memory alloy wires is located in the channel of the endoscope, and a bending portion of the bending insertion instrument which includes the angle wire is located at the distal end portion of the bending insertion instrument and is projected through the port of the endoscope.
154 Citations
35 Claims
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1. An endoscope apparatus comprising:
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an endoscope having a distal end, a port at the distal end, and a channel extending through said endoscope to the distal end and communicating with the port; and a bending insertion instrument extensible through the channel and through the port, the bending insertion instrument comprising; angle wires provided in a distal end side of the bending insertion instrument, and shape memory alloy wires connected to proximal end portions of the angle wires, and wherein the bending insertion instrument is inserted through the channel of the endoscope such that a portion of the bending insertion instruments, which is located on the distal end side of the bending insertion instrument and which includes the angle wires therein, is projected through the port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 22)
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9. An endoscope apparatus comprising:
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an endoscope having a distal end, a port at the distal end, and a channel extending through said endoscope to the distal end and communicating with the port; and a bending insertion instrument extensible through the channel and through the port, the bending insertion instrument comprising; angle wires provided in a distal end side of the bending insertion instrument, and shape memory alloy wires connected to proximal end portions of the angle wires, and wherein the bending insertion instrument is inserted through the channel of the endoscope such that (i) a portion of the bending insertion instrument, which includes the shape memory alloy wires, is located in the channel of the endoscope, and (ii) a portion of the bending insertion instrument, which includes the angle wires therein, is located on the distal end side of the bending insertion instrument and is projected through the port. - View Dependent Claims (10, 11, 12, 13)
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14. An endoscope apparatus comprising:
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an endoscope having a channel communicating with an outside of the endoscope; and a bending insertion instrument capable of being exposed to an outside of the endoscope through the channel of the endoscope, the bending insertion instrument including; angle wires provided at a distal end portion of the bending insertion instrument, and shape memory alloy wires electrically connected to proximal end portions of the angle wires, and wherein an electrical resistance of the angle wires is lower than an electrical resistance of the shape memory alloy wires. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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23. A bending operation apparatus for operating a bending insertion instrument which has an insertion section which is insertable into one of a digestive organ of a human body, a body cavity, an industrial tube, and a work space, and a bending portion arranged at a distal end portion of the insertion section and being capable of bending,
the bending operation apparatus further comprising: -
angle wires provided in the bending portion at the distal end portion of the insertion section of the bending insertion instrument, and shape memory alloy wires electrically connected to proximal end portions of the angle wires, the angle wires having a lower electrical resistance than an electrical resistance of the shape memory alloy wires. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification