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Title:
INJECTION NEEDLE
Document Type and Number:
WIPO Patent Application WO/2006/106880
Kind Code:
A1
Abstract:
An injection needle by which internal hemorrhoids tissue and an underlying tunica muscularis recti can be distinguished due to the difference of piercing resistance at the time of injecting medicine into the internal hemorrhoids tissue. Distal end of a needle tube (1) is polished obliquely against its axis C, and the polished face serves as an edge face (4) having a first bevel (6) on the proximal side and a pair of second bevels (7) on the opposite sides on the distal side, wherein a second inclination angle between the second bevel (7) and the axis C is set larger than a first inclination angle between the first bevel (6) and the axis C. Formation angle Ѳ between the second bevels (7) is set in the range of 50°-90°.

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Inventors:
TAKAHASHI KOUTA (JP)
UCHIDA YOSHIKUNI (JP)
Application Number:
PCT/JP2006/306753
Publication Date:
October 12, 2006
Filing Date:
March 30, 2006
Export Citation:
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Assignee:
NIPRO CORP (JP)
TAKAHASHI KOUTA (JP)
UCHIDA YOSHIKUNI (JP)
International Classes:
A61M5/32
Foreign References:
JP2003290354A2003-10-14
JPS54168092U1979-11-27
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