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:
Oct. 06, 2015
Filed:
Oct. 26, 2012
Three Rivers Cardiovascular Systems Inc., Toronto, CA;
Three Rivers Cardiovascular Systems Inc., Toronto, CA;
Abstract
An apparatus (), control system () and methods are provided for directly measuring a pressure gradient, i.e. by real-time pressure measurements, with particular application for in situ measurement of transvalvular blood pressure gradients for the aortic valve and other heart valves, using minimally-invasive techniques. The apparatus takes the form of a multi-sensor assembly, e.g. enclosed within a micro-catheter or a steerable guidewire, and comprises a plurality of optical pressure sensors () is arranged along a length of the distal end portion (), for measuring pressure simultaneously at each sensor location. For example, four MOMS optical pressure sensors (), and optionally, a flow sensor (), are incorporated into a distal end portion () having a diameter of 0.89 mm or less, and preferably 0.46 mm or less. Beneficially, all sensors are optically coupled, via respective optical fibers (), to an optical coupler () at the proximal end of the multi-sensor apparatus, without requiring electrical connections.