|OPSENS INC. Patent applications|
|Patent application number||Title||Published|
|20130218032||GUIDEWIRE WITH INTERNAL PRESSURE SENSOR - The present document describes a pressure guidewire comprising: a shaft tube with a proximal section; a middle section extending from the proximal section of the shaft tube, the middle section having greater flexibility than the proximal section; an inner hypotube installed substantially within the middle section for optimal mechanical properties; a pressure sensor with a communication means routed through the middle section and the proximal section; and a sensor housing for receiving the pressure sensor. There are also described methods for joining the inner hypotube to the shaft tube.||08-22-2013|
|20120227505||MINIATURE HIGH SENSITIVITY PRESSURE SENSOR - There is described a miniature fiber optic pressure sensor design where sensitivity around specific biased pressure is optimized. In an embodiment, the pressure sensor is a Fabry-Perot (FP) sensor which comprises a substrate; and a diaphragm mounted on the substrate. The diaphragm has a center and comprises: a first layer comprising a first material; and a second layer comprising a second material. The second layer forms a dot or a ring. The dot or ring is mounted on the first layer and is centered about the center of the diaphragm. The second material comprises internal pre-stresses to cause the center of the diaphragm (in the case of a dot) or the peripheral area about the center of the diaphragm (in the case of a ring) to camber away from the substrate upon relaxing the internal pre-stresses.||09-13-2012|
|20110186294||OUTSIDE CASING CONVEYED LOW FLOW IMPEDANCE SENSOR GAUGE SYSTEM AND METHOD - The present document describes a sensing apparatus for lowering into a well and cementing therein at a certain depth. The sensing apparatus comprises an elongated casing and a sensor device protruding from an outside surface of the elongated casing for generating measurement data and sending the data to the surface of the well using a cable extending from the sensor device along the outside surface of the casing. A flow of cement is provided between the outside surface of the casing and the well for cementing the casing in place and isolating different layers of the well. Presence of the sensor device and the cable creates an obstruction within the flow path of the cement which may result in the formation of micro-annulus around the sensor device and the cable. In order to address this problem, a plurality of fins is provided around the casing, the fins being shaped to cause a straight flow of cement received at the fins to rotate around the longitudinal axis of the casing when exiting the fins for increasing cement flow between the elongated casing and its surrounding environment to mitigate micro-annulus formation. Another means to address this problem is to provide cable attachments which distance the cable from the casing and thereby let cement flow between the cable and the casing also mitigating micro-annulus formation.||08-04-2011|
|20100241008||ECCENTRIC PRESSURE CATHETER WITH GUIDEWIRE COMPATIBILITY - There is herein described a catheter for measuring a pressure in a cardiovascular system. The catheter comprises: a guiding tube adapted for insertion into the cardiovascular system. The guiding tube defines a lumen for sliding a guidewire therethrough. The catheter further comprises a tip pressure sensor eccentrically mounted relative to the guiding tube and a signal communication means extending therefrom. The tip pressure sensor is for sensing a pressure in the cardiovascular system and the signal communicating means is for transmitting a signal indicative of the pressure to a processing device in order to obtain a pressure measurement reading.||09-23-2010|
Patent applications by OPSENS INC.