Wide-angle controllable direction-changing interventional guide wire

Abstract

The present invention relates to a wide-angle controllable direction-changing interventional guide wire. The wide-angle controllable direction-changing interventional guide wire comprises an operatingrod, a guide wire body and a guide wire tip, the operating rod is fixedly arranged at a rear end of the guide wire body, the guide wire tip is arranged at a front end of the guide wire body, the wide-angle controllable direction-changing interventional guide wire is characterized in that: the guide wire tip and a front end of the guide wire body are connected through a bent telescopic section capable of being bent and elastically telescopic; the operating rod is provided with a plurality of sliding grooves parallel to a long axis direction of the operating rod, and a sliding operating buttonis assembled in each sliding groove in a sliding manner; a plurality of thin linkage wires parallel to the long axis direction of the guide wire body are embedded in the guide wire body, the number ofthe thin linkage wires is the same as that of the sliding operating buttons, each thin linkage wire can axially move in the guide wire body, rear ends of the plurality of the thin linkage wires are connected with the sliding operating buttons in a one-to-one correspondence mode, and front ends of the plurality of the thin linkage wires penetrate through the bent telescopic section and are connected with the guide wire tip. The wide-angle controllable direction-changing interventional guide wire has advantages of ingenious structure, reasonable design, simple and convenient operation, lower cost and no potential harms to patients.

Description

technical field [0001] The invention relates to a wide-angle controllable direction-changing interventional guide wire, which belongs to the technical field of medical devices. Background technique [0002] At present, the guide wire body commonly used in clinical practice is mostly composed of a soft tip, a middle section (solder joint) connecting the soft tip and the core rod, and an operating rod. According to the difference of the soft tip, it is mainly divided into Core-to-tip design and Shape ribbon design. Among them, the soft tip of Core-to-tip design is harder and has better maneuverability, which is suitable for passing through lesions with greater resistance; while Shape ribbon design The designed soft tip is softer and is usually combined with NiTi alloy inside to improve its shaping durability. It is suitable for twisted and angled lesions, but its maneuverability and passability are poor. [0003] Both of the above two guide wires have their own advantages and...

AI Technical Summary

Problems solved by technology

According to the difference of the soft tip, it is mainly divided into Core-to-tip design and Shape ribbon design. Among them, the soft tip of Core-to-tip design is harder and has better maneuverability, which is suitable for passing through lesions with greater resistance; while Shape ribbon design The designed soft tip is softer, usually combined with NiTi alloy inside to improve its shaping durability, suitable for twisted and angled lesions, but poor maneuverability and passability

[0003] Both of the above two guide wires have their own advantages and disadvantages, but they also have one thing in common - they are all inseparable from the manual operation of the doctor, and all the operations of the doctor are completed through the joystick, including forward, backward, turning, and turning Wait, it can be described as "fine work". Doctors who have undergone good surgical operation training can successfully complete most of the interventional operations under the guide wire catheter, but a problem that has always plagued all doctors is to face the angle > 90 with the direction of advancement. ° blood vessels, how to smoothly bend the soft tip of the guide wire over 90° or even close to 180°, and retain a certain supporting force to push the catheter through such a large angle, is difficult for most interventional surgeons. is a difficult operation

[0004] Although some scholars also proposed to use the magnetic navigation system, that is, to add a magnetic structure to the tip of the guide wire, and use the magnetic field installed outside the DSA machine to pull the guide wire to complete the large-angle refolding, but the cost of this machine is very high, and the magnetic field Very demanding, too weak to be effective, too strong may be potentially dangerous for many patients with metal implants

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