发明授权
- 专利标题: KOAXIALKAN LE MIT DICHTELEMENT
- 专利标题(英): Coaxial cannula provided with a sealing element
- 专利标题(中): KOAXIALKAN LE与密封元件
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申请号: EP04724000.7申请日: 2004-03-29
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公开(公告)号: EP1620016B1公开(公告)日: 2007-08-15
- 发明人: HESKE, Norbert, F. , HESKE, Thomas
- 申请人: C.R. BARD, INC.
- 申请人地址: 730 Central Avenue Murray Hill, NJ 07974 US
- 专利权人: C.R. BARD, INC.
- 当前专利权人: C.R. BARD, INC.
- 当前专利权人地址: 730 Central Avenue Murray Hill, NJ 07974 US
- 代理机构: Tomlinson, Edward James
- 优先权: DE20305093U 20030329
- 国际公布: WO2004086977 20041014
- 主分类号: A61B10/00
- IPC分类号: A61B10/00 ; A61B17/34 ; G01N1/08
摘要:
The invention relates to a coaxial cannula (1) for extracting samples from tissue comprising a biopsy needle unit (9) provided with a space for sample extraction and a sample separation unit (21) which coaxially encompasses the biopsy needle (9) on an external wall and is longitudinally movable. The inventive coaxial cannula (1) comprises a sealing element (3) which is arranged on the proximal end thereof and closes the space between the internal wall of the coaxial cannula and the external wall of the sample separation unit. Said coaxial cannula (1) is characterised in that the sealing element (3) opens an air outlet when the biopsy needle unit (9) is inserted, and prevents air intake when the biopsy needle unit (9) is positioned and vacuum is produced in the internal chamber of the biopsy needle.
公开/授权文献
- EP1620016A1 KOAXIALKAN LE MIT DICHTELEMENT 公开/授权日:2006-02-01
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