Method of manufacturing treatment instrument of endoscope
First Claim
1. A method of manufacturing a treatment instrument of an endoscope, said treatment instrument including a first coil and a second coil that is different from said first coil and to be connected to said first coil, an operation wire, and a device secured to a distal end of said first coil, said wire being inserted through said first coil and said second coil, a distal end of said wire being connected to said device, said device being driven by said wire when said wire is moved in said first coil and said second coil, said method comprising:
- inserting one end of said first coil and one end of said second coil in a connection pipe from opposite ends thereof; and
exposing ends of said connection pipe and portions of said first coil and said second coil corresponding to said ends of said connection pipe to arc columns, respectively, the portions exposed to the arc columns being melted, and thereafter, solidified.
5 Assignments
0 Petitions
Accused Products
Abstract
A treatment instrument includes a first coil and a second coil that is different from said first coil. The first and second coils are connected to each other. An operation wire is inserted in the first and second coils, and a tip end of the wire is connected to a treatment device. Upon movement of the wire, the treatment device operates. A method of manufacturing such a treatment instrument includes inserting one end of the first coil and one end of the second coil in a connection pipe from opposite ends thereof, exposing both ends of the connection pipe and corresponding portions of the first and second coils. The portions exposed to the arc columns are melted and connected.
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Citations
35 Claims
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1. A method of manufacturing a treatment instrument of an endoscope, said treatment instrument including a first coil and a second coil that is different from said first coil and to be connected to said first coil, an operation wire, and a device secured to a distal end of said first coil, said wire being inserted through said first coil and said second coil, a distal end of said wire being connected to said device, said device being driven by said wire when said wire is moved in said first coil and said second coil, said method comprising:
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inserting one end of said first coil and one end of said second coil in a connection pipe from opposite ends thereof; and
exposing ends of said connection pipe and portions of said first coil and said second coil corresponding to said ends of said connection pipe to arc columns, respectively, the portions exposed to the arc columns being melted, and thereafter, solidified. - View Dependent Claims (2, 3, 4, 7)
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- 5. A method of manufacturing a treatment instrument of an endoscope, said treatment instrument including a first coil and a second coil that is different from said first coil and to be connected to said first coil, an operation wire, and a device secured to a distal end of said first coil, said wire being inserted through said first coil and said second coil, a distal end of said wire being connected to said device, said device being driven by said wire when said wire is moved in said first coil and said second coil, said method comprising generating an arc column between a contact portion where a proximal end side of said first coil and a distal end side of said second coil contact with each other and an electrode located in the vicinity of the contact portion, the proximal end side of said first coil and the distal end side of said second coil located at the contact portion being melted as exposed to the arc column, and solidified as cooled.
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8. A method of manufacturing a treatment instrument of an endoscope, said treatment instrument including a first guide coil, an operation wire, and a device to be operated, said wire being inserted through said first guide coil, a distal end of said wire being connected to said device, said device being driven by said wire when said wire is moved in said first guide coil, said method comprising:
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inserting said first guide coil into a first cover coil; and
exposing a plurality of portions of said first cover coil at positions where said first cover coil covers said first guide coil to arc columns, respectively, said first cover coil and said first guide coil at portions exposed to the arc columns being melted, and thereafter, solidified. - View Dependent Claims (9, 10)
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11. A method of manufacturing an endoscope, said endoscope including a first guide coil, and an operation wire, said wire being inserted through said first guide coil, a distal end portion of said endoscope being provided with a moving mechanism, a distal end of said wire being connected to said moving mechanism, said moving mechanism being driven by said wire when said wire is moved in said first guide coil, said method comprising:
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inserting said first guide coil into a first cover coil; and
exposing a plurality of portions of said first cover coil at positions where said first cover coil covers said first guide coil to arc columns, respectively, said first cover coil and said first guide coil at portions exposed to the arc columns being melted, and thereafter, solidified. - View Dependent Claims (12, 14, 15, 16, 18, 19)
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13. A method of manufacturing an endoscope, said endoscope including an insertion tube to be inserted in a human cavity, a bendable unit provided on a distal end side of said insertion unit, said bendable unit being operated by a pair of operation wires, and a connection member that connects said insertion tube with said bendable unit, said connection member having substantially a cylindrical shape, said method comprising:
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positioning a guide coil that covers said operation wire to elastically reinforce so that a bendable unit side end of said guide coil contacts an inner surface of said connection member; and
exposing said connection member to an arc column so that the connection member and the outer surface of said guide coil is heated and melted.
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17. A method of manufacturing a brush instrument for an endoscope, said brush instrument including a brush unit and an operation wire, said brush unit being secured to a distal end portion of said operation wire, said method comprising:
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heating a tip of said wire so that the tip of said operation wire is melted, a substantially hemispherical portion being formed thereat; and
cooling the melted portion of said operation wire.
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20. A method of manufacturing a brush instrument for an endoscope, said brush instrument including a brush unit and an operation wire, said brush unit being secured to a distal end portion of said operation wired, said method comprising:
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inserting a tip end of said operation wire in a collar member, said operation wire protruding from the end of said collar by a predetermined amount, heating said tip of said operation wire protruding from said collar so that the tip of said operation wire is melted, a substantially hemispherical portion being formed by the melted portion of said operation wire; and
cooling the melted portion of said operation wire. - View Dependent Claims (21, 22, 24, 25, 26, 27, 29, 30, 31)
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23. A method of manufacturing a treatment instrument for an endoscope, said instrument including an operable member protruding from the distal end of said endoscope, said operable member being driven by moving an operation wire inserted in said endoscope, said method comprising:
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securing said operable member onto a support member that restrict movement of said operable member;
covering said operation wire with a coil;
connecting the tip end of said coil and said supporting member in accordance with arc welding.
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28. A method of manufacturing a treatment instrument for an endoscope, said treatment instrument including a treatment unit and an operation wire, said treatment unit being secured to a distal end portion of said operation wire, said wire being covered with a coil, said method comprising:
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heating a tip of said wire so that the tip of said operation wire and tip of said coil are melted and connected; and
cooling the melted portion of said operation wire and said coil.
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32. A method of manufacturing a treatment instrument for an endoscope, said treatment instrument including a treatment unit and an operation wire, said treatment unit being secured to a distal end portion of said operation wire, said wire being covered with a coil at a portion on a proximal end side with respect to said treatment unit, said method comprising:
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widening a pitch of said coil at a position a predetermined length spaced from the tip end of said coil to form an interstice portion;
heating said coil and said wire at said interstice portion so that said coil and the corresponding portion of said operation wire are melted and connected; and
cooling the melted portion of said operation wire and said coil. - View Dependent Claims (33, 34, 35)
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Specification