基本信息:
- 专利标题： VALVULOPLASTY CATHETER AND METHODS
- 专利标题（中）：瓣膜成形术导管和方法
- 申请号：EP09819985.4 申请日：2009-10-09
- 公开(公告)号：EP2349441A1 公开(公告)日：2011-08-03
- 发明人： DRASLER, William , PEDERSEN, Wes , UNGS, Mark
- 申请人： Intervalve, Inc.
- 申请人地址： 10400 Viking Drive, Suite 5500 Eden Prairie, MN 55344 US
- 专利权人： Intervalve, Inc.
- 当前专利权人： Intervalve, Inc.
- 当前专利权人地址： 10400 Viking Drive, Suite 5500 Eden Prairie, MN 55344 US
- 代理机构： KIPA
- 优先权： US104636P 20081010; US112566P 20081107; US145709P 20090119
- 国际公布： WO2010042869 20100415
- 主分类号： A61M29/02
- IPC分类号： A61M29/02
摘要：
A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.