David Miller;Edmund Tam;Zachary J. Malchano;Chris A. Rothe;Vahid Saadat;Ruey-Feng Peh;Aseem K. Thakur
发明人:
David Miller,Vahid Saadat,Zachary J. Malchano,Ruey-Feng Peh,Aseem K. Thakur,Chris A. Rothe,Edmund Tam
申请号：
US12499681
公开号：
US09510732B2
申请日:
2009.07.08
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Methods and apparatus for efficient purging from an imaging hood are described which facilitate the visualization of tissue regions through a clear fluid. Such a system may include an imaging hood having one or more layers covering the distal opening and defines one or more apertures which control the infusion and controlled retention of the clearing fluid into the hood. In this manner, the amount of clearing fluid may be limited and the clarity of the imaging of the underlying tissue through the fluid within the hood may be maintained for relatively longer periods of time by inhibiting, delaying, or preventing the infusion of surrounding blood into the viewing field. The aperture size may be controlled to decrease or increase through selective inflation of the membrane or other mechanisms.
