Invention Grant
- Patent Title: Method and apparatus for monitoring intra ocular and intra cranial pressure
- Patent Title (中): 监测眼内和颅内压的方法和装置
-
Application No.: US10565852Application Date: 2004-08-06
-
Publication No.: US08172769B2Publication Date: 2012-05-08
- Inventor: Martin M Lenhardt , Kevin Ward
- Applicant: Martin M Lenhardt , Kevin Ward
- Applicant Address: US VA Richmond
- Assignee: Virginia Commonwealth University
- Current Assignee: Virginia Commonwealth University
- Current Assignee Address: US VA Richmond
- Agency: Whitham Curtis Christofferosn & Cook, PC
- International Application: PCT/US2004/025185 WO 20040806
- International Announcement: WO2005/016121 WO 20050224
- Main IPC: A61B5/00
- IPC: A61B5/00

Abstract:
A method and apparatus for measuring acoustic energy applied to the head to detect increases in intracranial pressure. Acoustic eye patches are applied to a patient's eye or eyelid, and an ultrasonic sweep generator applies an acoustic signal across the patient's skull, the signal being swept across a predetermined range. The eye patches have piezoelectric film sensors for measuring the acoustic signal. In one embodiment the predetermined range is in the ultrasonic band and an analyzer determines from the output of the sensors a resonant frequency and a damping of acoustic amplitude at said resonant frequency, there being a correlation between said damping and intra cranial pressure. In another embodiment the predetermined range includes a range less than 20 kHz and the analyzer determines retinal artery pulsations, with pressure being applied to the eye until the pulsations disappear, such pressure being a measure of intra cranial pressure.
Public/Granted literature
- US20070123796A1 Method and apparatus for monitoring intra ocular and intra cranial pressure Public/Granted day:2007-05-31
Information query