Sensor and guide wire assembly
First Claim
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1. A sensor and guide wire assembly for intravascular measurement of a physiological variable in a living body, comprising:
- a guide wire comprising an external contour, wherein a housing forms a portion of the external contour at a distal sensor portion of the guide wire; and
a fluid pressure sensor element encompassed by the housing and at a radially internal location of the housing at the distal sensor portion,wherein the housing comprises a window for establishing fluid communication between the sensor element and a medium surrounding the sensor and guide wire assembly,wherein the external contour at the distal sensor portion exhibits a cross-section which is enlarged compared to a cross-section of the external contour proximal to the distal sensor portion that encompasses said fluid pressure sensor element.
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Abstract
A sensor and guide wire assembly (21; 41; 61; 81) for intravascular measurements of a physiological variable in a living body includes a sensor element (22; 42; 62; 82) mounted at a distal sensor portion (23; 43; 63; 83) of a guide wire (24; 44; 64; 84), wherein the sensor portion exhibits a maximal cross-sectional dimension which is larger than a maximal cross-sectional dimension of guide wire portions (28, 30; 48, 50; 68, 70) located proximally of the sensor portion.
79 Citations
19 Claims
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1. A sensor and guide wire assembly for intravascular measurement of a physiological variable in a living body, comprising:
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a guide wire comprising an external contour, wherein a housing forms a portion of the external contour at a distal sensor portion of the guide wire; and a fluid pressure sensor element encompassed by the housing and at a radially internal location of the housing at the distal sensor portion, wherein the housing comprises a window for establishing fluid communication between the sensor element and a medium surrounding the sensor and guide wire assembly, wherein the external contour at the distal sensor portion exhibits a cross-section which is enlarged compared to a cross-section of the external contour proximal to the distal sensor portion that encompasses said fluid pressure sensor element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A sensor and guide wire assembly for intravascular measurement of a physiological variable in a living body, comprising:
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a guide wire comprising an external contour; a fluid pressure sensor element located at a distal sensor portion of the guide wire, wherein the external contour at the distal sensor portion exhibits a cross-section which is enlarged compared to a cross-section of the external contour proximal to the distal sensor portion to encompass said fluid pressure sensor element; and a catheter configured to be guided over the guide wire, wherein an inner diameter of the catheter corresponds to an outer diameter of the external contour proximal to the distal sensor portion, and wherein the inner diameter of the catheter is smaller than an outer diameter of the external contour at the distal sensor portion. - View Dependent Claims (19)
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Specification