发明授权
- 专利标题： Pre-slit injection site and tapered cannula
- 专利标题（中）： 预切口注射部位和锥形插管
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申请号： US09289056申请日： 1999-04-09
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公开(公告)号： US06193697B1公开(公告)日： 2001-02-27
- 发明人: Steven C. Jepson , Thomas E. Dudar , Michael J. Finley , Vincent C. Desecki
- 申请人： Steven C. Jepson , Thomas E. Dudar , Michael J. Finley , Vincent C. Desecki
- 主分类号： A61M524
- IPC分类号： A61M524
摘要：
A pre-slit injection site (34) includes a housing (40) with a flow path therethrough. A first end (42) of the housing (40) carries a pre-slit septum (52). One form of a blunt cannula (98), usable with the injection site (34), carries a locking member (100). When the pre-slit injection site (34) slidably receives the blunt cannula (98), the locking member (100) latches to the injection site (34) and creates a mechanically coupled unit. Another form of the cannula (280) includes a tube having a tapered distal end region (298) and having elongate discharge slots (294) for reducing contact surface area and for directing the flow laterally out of the cannula. The cannula may also include a rounded lead post (330), an annular barb (394), and axially oriented grooves (268).