The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2012
Filed:
Dec. 12, 2007
Osvaldas Pranevicius, New York, NY (US);
Mindaugas Pranevicius, New York, NY (US);
Henrikas Pranevicius, Kaunas, LT;
Egidijus Marcinkevicius, Kaunas, LT;
David S. Liebeskind, Los Angeles, CA (US);
Osvaldas Pranevicius, New York, NY (US);
Mindaugas Pranevicius, New York, NY (US);
Henrikas Pranevicius, Kaunas, LT;
Egidijus Marcinkevicius, Kaunas, LT;
David S. Liebeskind, Los Angeles, CA (US);
Other;
Abstract
A method to measure effective cerebral outflow pressure or intracranial pressure is disclosed. The craniospinal venous system has multiple anastomoses between the jugular veins and vertebral venous plexus. Jugular veins collapse with cervical compression or head elevation, when extrinsic pressure exceeds venous pressure. The vertebral venous plexus is exposed to intracranial pressure and collapses when intracranial pressure exceeds venous pressure. Vertebral venous plexus is not compressed with head elevation or cervical compression, because enclosure in the spinal canal protects veins from the direct effects of atmospheric pressure and cervical compression. Using cervical compression and/or head elevation blood outflow is redistributed between jugular veins and vertebral venous plexus, while the degree of cervical compression or head elevation indicates effective cerebral outflow pressure or ICP.