SINGAPORE HEALTH SERVICES PTE LTD;NATIONAL UNIVERSITY HOSPITAL (SINGAPORE) PTE LTD;NATIONAL UNIVERSITY OF SINGAPORE
发明人:
Tar Toong Victor CHAO,Chong Hee LIM,Hock Heng Daniel TAN,Tze Kiat NG,Pei HO
申请号：
US15115368
公开号：
US20170007800A1
申请日:
2015.01.30
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A cannula includes a first segment configured to reside entirely within a vessel. The first segment includes a proximal exit opening disposed nearer to the heart, and multiple fenestrations disposed distally away from the proximal exit opening near a cannulation site. The fenestrations in combination with the proximal exit opening enable simultaneous perfusion of blood into the cannulated vessel along proximal and distal directions. During a medical procedure, blood introduced into a vessel (e.g., the femoral artery) by way of the cannula can exit the cannula in a manner that provides concurrent blood flow in a first set of directions proximally towards the heart and a second set of directions distally away from the heart. Radially displaceable anchoring elements positionable adjacent to the vessel's superficial wall aid retention of the first segment in the vessel. The fenestrations and/or anchoring elements can be arranged obliquely around portions of the cannula's circumference.
