University of Southern California;California Institute of Technology
发明人:
Yu-Chong Tai,Nicholas E. Scianmarello,Mark S. Humayun
申请号：
US16786377
公开号：
US20200260946A1
申请日:
2020.02.10
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A lacrimal tear flow measurement device, and methods of manufacture and use, are described that includes a polymer microcapillary tube or similar structure having at least one end coated on the outside with soft silicone rubber and one end treated on the inside to be hydrophobic. The hydrophobic end keeps liquid from escaping or entering that end while allowing air to pass. The rest of the tube's insides may be hydrophilic or a neutral hydrophobe. As a Schirmer's test strip replacement, the entrance end of the device can be touched to the lacrimal lake of a patient's eye to collect suck up, or merely collect, tear fluid within the collection tube for weighing, volume measurement, or other analysis. Long-term collection devices for wear between doctors' visits can have a bypass channel allowing liquid to flow back onto the eye.
