Guidewire with internal pressure sensor
AssigneeOpsens Inc.
InventorClaude Belleville
Life of this patent
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Abstract
The present document describes a pressure guidewire. It comprises a shaft tube having a proximal section and a sensor housing having a distal end, the proximal section and the sensor housing being the continuity of the same shaft tube. A fiber optic pressure sensor is embedded in the sensor housing and comprises an optical fiber extending within the sensor housing, the sensor adapted to measure a pressure of a fluid which is substantially applied in an axis collinear with the longitudinal axis of the guidewire. A marker band, to help in localizing the pressure guidewire in a patient's vessels, is embedded inside the sensor housing and fixed to the optical fiber for holding the pressure sensor inside the sensor housing.
Claims30
A pressure guidewire having a longitudinal axis comprising:
- a shaft tube having a proximal section and a sensor housing having a distal end;
- a fiber optic pressure sensor assembly embedded in the sensor housing and comprising a pressure sensor and an optical fiber extending within the sensor housing, the pressure sensor adapted to measure a pressure of a fluid which is substantially applied in an axis collinear with the longitudinal axis of the guidewire;
- and
- a band to support the fiber optic pressure sensor assembly, the band being embedded inside the sensor housing and fixed to the fiber optic pressure sensor assembly for holding the pressure sensor inside the sensor housing.
A sensor housing of a pressure guidewire having a distal end to be inserted in a patient's vessels, comprising:
- a fiber optic pressure sensor assembly embedded in a sensor housing and comprising a pressure sensor and an optical fiber extending within the sensor housing;
- and
- a band fixed to both the sensor housing and to the fiber optic pressure sensor assembly for holding the pressure sensor inside the sensor housing, wherein the sensor housing defines a cavity for receiving a fluid, inside the sensor housing, which is distal relative to the pressure sensor and delimited at a proximal end thereof by the pressure sensor.
Dependencies are inferred from the claim text.