Medical guide wire with blood pressure monitoring function

Abstract

The invention discloses a medical guide wire with a blood pressure monitoring function, relates to the field of medical guide wires, and adopts the technical scheme that the medical guide wire comprises a guide wire body and an optical sensor; wherein the far end part of the guide wire body is made of an X-ray developing material, an opening for measurement is formed in the side wall of the far end part of the guide wire body, and the optical sensor is arranged in the guide wire body corresponding to the opening. The guide wire has very good indication performance, wherein the position of the sensor is visually represented at the developing position; besides, the guide wire in the scheme can give consideration to the torsion flexibility performance of the far end and the pushing, supporting and controlling performance of the near end through the design of the far-end outer-layer pipe with the thinner wall thickness and the larger inner cavity, the kerfs with the variable density and the spring pieces with the variable number of strands.

Description

technical field [0001] The invention relates to the field of medical guide wires, in particular to a medical guide wire with the function of monitoring blood pressure. Background technique [0002] The 2011 ACC / AHA Coronary Intervention Guidelines clearly recommend that the invasiveness obtained based on intravascular manometry can be used to guide intervention decisions for subjects with coronary artery stenosis, which is a powerful supplement to the traditional coronary angiography assessment method and provides Coronary stents have laid a solid foundation for individualized and precise treatment. The so-called fractional coronary flow reserve (FFR) is actually the ratio of the blood pressure at the distal end and the proximal end of the stenosis in the blood vessel. [0003] Existing solutions have the following drawbacks: [0004] At present, the most distal part of most FFR guide wires is designed with spring winding, and there is no opening on the appearance of the g...

AI Technical Summary

Problems solved by technology

[0004] At present, the most distal part of most FFR guide wires is designed with spring winding, and there is no opening on the appearance of the guide wire tip for the sensor to collect blood pressure. Usually, the opening will be a certain distance from the guide wire tip, which will cause the guide wire to enter the body Finally, observe the position of the guide wire through contrast imaging. The operator needs to judge the relative position of the sensor opening in the target vessel according to the distance between the sensor opening and the tip of the guide wire in the instructions of different products.

If you want to embed a developing material near the opening, although it can improve the accuracy of the position of the guide wire sensor in blood vessel positioning, it will increase the difficulty of the guide wire processing process

The proximal and distal materials of some FFR guide wires are different (for example, the proximal end is 304 stainless steel, and the distal end is nickel-titanium alloy). The welding process of the two is difficult due to the difference in material properties and melting points.

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