Conduit system with label testing and ablation functions in blood vessels

Abstract

The invention discloses a conduit with electric label testing and radiofrequency ablation functions in blood vessels, which is divided into three parts: (1), the pointed part of the conduit can be adhered to a plurality of metal straps; (2), the body part of the conduit is composed of the conduit sheath and internal cores; and (3), the rear part of the conduit is provided with an operational handle. When the metal straps at the pointed part of the conduit are not opened, the conduit is cylindrical so as to enter blood vessels conveniently; when the sheath is fixed and the internal cores are drawn back, the metal straps at the pointed part of the conduit are opened to be adhered to the inner walls of the blood vessels; and the conduit has electric label testing and ablation functions. When renal artery sympathetic nerves are exciting, one or more metal straps at the corresponding part can be tested; and the corresponding metal straps are ablated. After finishing ablating the metal straps, the metal straps are tested so as to observe the ablation effect; and if the ablation is incomplete, the metal straps are repeatedly operated until having exact effect. The conduit system provided in the invention can improve curative effect and reduce treatment complications and operation risk.

Description

Technical field [0001] The invention is used for intravascular electrical mapping and radiofrequency ablation in the medical field. technical background [0002] Transcatheter Renal Denervation (TRenD) or Renal Sympathetic Denervation (RSD) is the latest non-drug interventional treatment for hypertension in the world. It originated from the fact that several American doctors used CT-guided lidocaine to seal the renal hilum when treating a patient with refractory renal colic at the beginning of this century, and the results were surprising. It was found that the patient not only relieved renal colic but also accompanied by a decrease in blood pressure and an increase in urine output. These scientifically minded doctors conducted a detailed study of this strange phenomenon. By searching the literature, they found that as early as 1953, American-German doctor Smithwick treated 1,226 patients with refractory hypertension by surgically cutting off the visceral nerves. After 5-1...

AI Technical Summary

Problems solved by technology

This kind of ablation catheter and method has the following disadvantages: (1) Point-like ablation cannot guarantee that the point is a point of sympathetic nerve innervation, so 6-8 points are required, similar to shooting birds with a sandblasting gun; (2) Treatment operation Therefore, it is impossible to ensure that the 8 ablation points are evenly distributed on the inner wall of the artery, and it is possible to ablate multiple times at the same point, which has the risk of vascular perforation; (3) There are many ablation points It is easy to cause too many scars on the blood vessel wall, resulting in renal artery stenosis; (4) It is impossible to map the position of the sympathetic nerve on the renal artery wall, so it is also impossible to detect whether the renal sympathetic nerve has been ablated or whether the ablation is complete during the operation

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