Title:
METHOD FOR MANUFACTURING THIN TUBE, METHOD FOR MANUFACTURING NOZZLE FOR CLEANING OBSERVATION PORT OF ENDOSCOPE AND NOZZLE FOR CLEANING OBSERVATION PORT OF ENDOSCOPE
Document Type and Number:
Japanese Patent JP3828105
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To form, with sufficient thickness, a metallic layer having excellent corrosion resistance and durability on the inner-wall surface of a thin tube.
SOLUTION: In this method of manufacturing the thin tube, an internal tube 2 of pure gold or gold alloy is inserted into a tubular body 10 having an outer diameter of about 1,000 μm after roughening the inner-wall surface 11 of the tubular body 10. The internal tube 2 is expanded by inserting a core bar 4 of sintered hard metal into the internal tube 2 and the diameter is slightly reduced by inserting the outer periphery of the tubular body 10 into a drawing tool 5. Thus, the outer periphery of the internal tube 2 is pressurized and closely adhered to the roughened inner-wall face 11 of the tubular body 10, and a metal layer is formed on the inner-wall surface 11 of the tubular body 10 with the internal tube 2. Subsequently, the inner-wall surface 21 of the internal tube 2 is worked into a mirror surface by applying vibration from the outside after charging hyperfine abrasive particles 8 in the thin tube 1.
Inventors:
Jun Matsumoto
Kiyota Shigeo
Kiyota Shigeo
Application Number:
JP2003344929A
Publication Date:
October 04, 2006
Filing Date:
October 02, 2003
Export Citation:
Assignee:
Olympus Endo Technology America Inc.
Kiyota Manufacturing Co., Ltd.
Kiyota Manufacturing Co., Ltd.
International Classes:
B21D39/04; B24B1/04; A61B1/12; B21D41/04; B21D51/16; B24B31/00; (IPC1-7): B21D39/04; A61B1/12; B21D41/04; B21D51/16; B24B1/04; //B24B31/00
Domestic Patent References:
| JP2137614A | ||||
| JP1164544A | ||||
| JP63011263A |
Attorney, Agent or Firm:
Susumu Ito