Sensor guidewire
A technology of sensors and guide wires, applied in the field of guide wires with sensors, can solve the problems of blood flow disorder and measurement accuracy reduction, and achieve the effect of high air tightness and simple structure
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no. 1 approach ）
[0036] refer to figure 1 and figure 2 A guidewire with a sensor according to a first embodiment of the present invention will be described. exist figure 1 and figure 2 Among them, the right side is the distal end side inserted into the body, and the left side is the proximal end side operated by an operator such as a doctor. In addition, in order to easily understand the shape of the hole, figure 2 A cross-sectional view taken along a plane including the hole of the hypotube is shown.
[0037] figure 1 The illustrated guide wire 10 with a sensor is used for treatment of blood vessels such as the heart, and has a total length of, for example, about 1900 mm. This sensor-attached guidewire 10 includes a mandrel 20 , a sensor 30 attached to the mandrel 20 , and a hypotube 40 covering the sensor 30 .
[0038]
[0039] The mandrel 20 has a cylindrical shape and has a hollow portion 21 formed inside and a tapered portion 22 formed at the front end. The hollow portion 21 ...
no. 2 approach ）
[0051] Second, refer to image 3 A guidewire with a sensor according to a second embodiment of the present invention will be described. exist image 3 Among them, the right side is the distal end side inserted into the body, and the left side is the proximal end side operated by an operator such as a doctor. In addition, the same code|symbol is attached|subjected to the same component as the above-mentioned embodiment, and description is abbreviate|omitted, and it demonstrates centering on difference below.
[0052] The guide wire with a sensor of the second embodiment differs from the above-described first embodiment in terms of the shape of the hole of the hypotube. Such as image 3 As shown, in the hypotube 50 of this embodiment, the front end side of the peripheral surface forming the hole portion 52 is an inclined surface 52 a that expands the hole diameter from the inner side toward the outer side.
[0053] In this embodiment, since the diameter of the hole 52 is enl...
no. 3 approach ）
[0055] Second, refer to Figure 4 A guidewire with a sensor according to a third embodiment of the present invention will be described. exist Figure 4 Among them, the right side is the distal end side inserted into the body, and the left side is the proximal end side operated by an operator such as a doctor. In addition, the same code|symbol is attached|subjected to the same component as the above-mentioned embodiment, and description is abbreviate|omitted, and it demonstrates centering on difference below.
[0056] The guide wire with a sensor of the third embodiment differs from the first and second embodiments described above with respect to the shape of the hole of the hypotube. Such as Figure 4 As shown, in the hypotube 60 of the present embodiment, the base end side of the peripheral surface forming the hole portion 62 is an inclined surface 62 a that expands the hole diameter from the inner side toward the outer side. This is because it is considered that blood fl...
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