公开(公告)号：WO1993021652A1

公开(公告)日：1993-10-28

申请号：PCT/US1993003480

申请日：1993-04-13

Applicant: FIBEROPTIC SENSOR TECHNOLOGIES, INC.

Inventor： FIBEROPTIC SENSOR TECHNOLOGIES, INC. ,  WLODARCZYK, Marek, T. ,  COLETTA, Luciano ,  TOMASKO, Doug ,  DANIELSON, David ,  VANOCHTEN, Mitch ,  VELAZQUEZ, Juan

IPC: H01J40/14

CPC classification number: G01L9/0077 ,  A61B5/02154 ,  G01L27/005

Abstract: An improved intensity-encoded fiber optic sensor incorporating novel drift correction and filtering means is disclosed. The first embodiments of the invention relate to means for removing unwanted higher-order core and cladding modes from an intensity-encoded signal in an optical fiber using mode strippers and mode filters located strategically at various points in the sensing system. The second set of improvements in the invention relates to an improved technique for long-term temporal drift cancellation in a fiber optic pressure sensor by periodically applying pressure to the sensor tip (100) in order to ascertain the measured voltage at which the sensor diaphragm (116) contacts other elements (120) of the sensor. This measured voltage is subtracted from an initial calibration voltage, and the result is applied to the measured signal as a constant correction term.

公开(公告)号：WO1995008183A1

公开(公告)日：1995-03-23

申请号：PCT/US1994008570

申请日：1994-07-29

Applicant: FIBEROPTIC SENSOR TECHNOLOGIES, INC.

Inventor： FIBEROPTIC SENSOR TECHNOLOGIES, INC. ,  WLODARCZYK, Marek, T. ,  DANIELSON, David, O.

IPC: H01J40/14

CPC classification number: G01L9/0077 ,  A61B5/02154 ,  G01L19/02 ,  G01L27/005 ,  G02B6/14 ,  G02B6/3845

Abstract: An improved intensity-encoded fiber optic sensor incorporating novel drift correction means is disclosed. Disclosed is an improved technique for long-term temporal drift cancellation in a fiber optic pressure sensor by periodically applying pressure to the sensor tip (160) in order to ascertain the measured voltage at which the sensor diaphragm (176) contacts other elements of the sensor (182). This measured voltage is subtracted from an initial calibration voltage, and the result is applied to the measured signal as a constant correction term.

Abstract translation: 公开了一种结合新颖漂移校正装置的改进的强度编码光纤传感器。 公开了一种用于光纤压力传感器中的长期时间漂移消除的改进技术，其通过周期性地向传感器尖端（160）施加压力，以便确定传感器隔膜（176）接触传感器的其它元件的测量电压 （182）。 从初始校准电压减去该测量电压，并将结果作为恒定校正项施加到测量信号。

公开(公告)号：WO1995005114A1

公开(公告)日：1995-02-23

申请号：PCT/US1994008564

申请日：1994-07-29

Applicant: FIBEROPTIC SENSOR TECHNOLOGIES, INC.

Inventor： FIBEROPTIC SENSOR TECHNOLOGIES, INC. ,  COLLIVER, Michael, D. ,  PATANIA, Andrew, C.

IPC: A61B05/00

CPC classification number: A61B5/02156 ,  A61B5/0215 ,  A61B5/02154 ,  A61B5/02158

Abstract: This invention is an apparatus for determining pressure at one or a number of intermediate points along a catheter (10) inserted into a closed cavity. Fiberoptic cables (34) extend from the proximal end of the catheter (12a) to the intermediate points at which pressure measurements are taken as well as to the distal tip of the catheter (12d).

Abstract translation: 本发明是用于确定沿着插入到封闭空腔中的导管（10）的一个或多个中间点处的压力的装置。 光纤电缆（34）从导管（12a）的近端延伸到进行压力测量的中间点以及导管（12d）的远端。

公开(公告)号：WO1993013707A1

公开(公告)日：1993-07-22

申请号：PCT/US1993000715

申请日：1993-01-21

Applicant: FIBEROPTIC SENSOR TECHNOLOGIES, INC.

Inventor： FIBEROPTIC SENSOR TECHNOLOGIES, INC. ,  WLODARCZYK, Marek, T. ,  ANDERSON, Charles, D. ,  VOKOVICH, Daniel, L.

IPC: A61B05/00

CPC classification number: A61B5/1459 ,  A61B5/02154

Abstract: A fiberoptic based sensor (10) for patient care use. The sensor includes a catheter (11) placed transcutaneously into a blood vessel which is connected to an external measuring head. A sensing tip (12) of the catheter includes a pressure sensing element (58) and an oxygen saturation measuring element (64). Features of the invention include novel tip designs, measuring head features, and approaches for enhancing measurement through correlation of the saturation and pressure readings.