Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BONE CEMENT INJECTION PUNCTURE NEEDLE
Document Type and Number:
WIPO Patent Application WO/2011/111653
Kind Code:
A1
Abstract:
An outer needle (12) of a bone cement injection puncture needle has first side holes (22) near the tip, and second side holes (24) near the base. When an inner needle is removed from the outer needle (12) and an inner tube is inserted into the outer needle (12) in place thereof, a reduced-pressure passage (48) is formed between the outer needle (12) and the inner tube (17). By this means, when bone cement is injected into a bone, gas and liquid in the bone pass through the reduced-pressure passage (48) and are discharged from the body, thereby preventing increased pressure in the bone. As a result, the bone cement can be prevented from leaking to outside of the bone.

Inventors:
TAKIZAWA Kenji (2-16-1 Sugao, Miyamae-ku, Kawasaki-sh, Kanagawa 11, 〒2168511, JP)
滝澤謙治 (〒11 神奈川県川崎市宮前区菅生2-16-1 学校法人 聖マリアンナ医科大学内 Kanagawa, 〒2168511, JP)
Application Number:
JP2011/055221
Publication Date:
September 15, 2011
Filing Date:
March 07, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
St. Marianna University School of Medicine (2-16-1, Sugao Miyamae-ku, Kawasaki-sh, Kanagawa 11, 〒2168511, JP)
学校法人 聖マリアンナ医科大学 (〒11 神奈川県川崎市宮前区菅生2-16-1 Kanagawa, 〒2168511, JP)
TERUMO KABUSHIKI KAISHA (44-1, Hatagaya 2-chome Shibuya-k, Tokyo 72, 〒1510072, JP)
テルモ株式会社 (〒72 東京都渋谷区幡ヶ谷2丁目44番1号 Tokyo, 〒1510072, JP)
International Classes:
A61B17/56; A61C5/04; A61F2/28
Foreign References:
JP2004513741A2004-05-13
JP2008259810A2008-10-30
Other References:
See also references of EP 2545872A4
None
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (Shinjuku Maynds Tower 16F, 1-1 Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
Download PDF:
Claims: