Ultrasonic-guided percutaneous interventional therapy guide system for arterial duct and usage method thereof

Abstract

The invention belongs to the field of interventional therapy and relates to an ultrasonic-guided percutaneous interventional therapy guide system for an arterial duct and a usage method thereof. The interventional therapy guide system comprises a catheter and a guide wire; the catheter has a guide wire channel and has a certain curved radian; when the guide wire is not inserted, the catheter is provided with sequentially connected arcs with different bending degrees; the guide wire is woven by winding a head-tapered steel cable with a thin steel wire, and the head of the guide wire is most flexible; the guide wire stretches out of the head of the catheter, and the bending degree of the catheter is changed gradually along with the gradually increasing of the stretched distance; after the guide wire stretches out completely, the catheter almost becomes a straight line. By adopting the interventional therapy guide system, the catheter is utilized effectively and the ultrasonic guidance and detection are realized; the interventional therapy guide system is independent of radioactive rays, does not use a contrast agent and effectively solves harms in the present operation; the arteria cruralis is free of puncturing, so that the surgical operation is simplified and better operating effect is obtained.

Description

technical field [0001] The invention belongs to the field of interventional therapy, and in particular relates to an interventional therapy guiding system for blocking an arterial catheter through the femoral vein under the guidance of ultrasound and a method for using the same. Background technique [0002] Since the emergence of percutaneous interventional therapy in the last century, there have been a number of classic surgical procedures represented by percutaneous catheter arterial occlusion and percutaneous atrial septal defect occlusion. The common characteristics of these operations are: After vascular puncture, under the guidance of radiation, insert the guide wire and catheter into the heart, and place the occluder at the lesion position through the catheter. [0003] The above-mentioned operations must use radiation to irradiate the patient during the operation, and there is a risk of radiation injury, which will not only affect the function of the patient's bone ...

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Problems solved by technology

On the other hand, conventional radiation-guided ductus arteriosus occlusion requires puncturing the femoral artery first, performing arterial angiography through the arterial side, then puncturing the femoral vein, and sending a guide wire and delivery sheath through the femoral vein for occlusion

The traditional technique not only needs to puncture the femoral artery and vein, but also requires large trauma and long operation time. It also requires the use of contrast medium during the operation, which has the risk of complications such as allergies and renal failure.

[0004] Replacing radiation with ultrasound for percutaneous interventional therapy has the advantages of real-time detection, no radiation, and no contrast agent, and has broad application prospects. However, because the working principle of ultrasound is completely different from that of radiation, ultrasound is a section-by-section scanning. Unlike radiation, which is a projection type detection, so when ultrasound is used as the only means of guidance, the biggest difficulty is that ultrasound is not easy to accurately determine the position of the catheter in the body like radiation, which makes it difficult to accurately locate the catheter during the operation.

Therefore, when occluding the ductus arteriosus under the guidance of ultrasound, it is very difficult to operate the ordinary catheter twice to pass through the tricuspid valve and the pulmonary valve.

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