Renal artery sympathetic nerve ablating perfusion pipe, catheter adopting same, and ablating system

Abstract

The invention relates to a renal artery sympathetic nerve ablating perfusion pipe. A pipe body is formed by connecting a hard pipe, a flexible pipe and a bending-controlled flexible pipe, wherein a spring is arranged in the wall of the flexible pipe, gaps among the inner walls of the hard pipe and the flexible pipe, a spring pipe sheath and leads form a water channel, four cavities are arranged inside the bending-controlled flexible pipe, two of the four cavities are water pass ways, another one is a lead pass way, and the other one is a traction wire pass way. According to the renal artery sympathetic nerve ablating perfusion pipe, the elasticity is increased, moulding can not be easily carried out, the recovery capability after bending is improved, the torque conduction capability is improved, and the perfusion capability is improved. The invention further relates to a catheter adopting the renal artery sympathetic nerve ablating perfusion pipe, wherein a handle is connected with the hard pipe, a structure for controlling the bending degree of the bending-controlled flexible pipe is arranged on the handle, the operation is easy, a porous ablating electrode is connected with the front end of the bending-controlled flexible pipe, the structure is stable, and the positioning is sensitive. The invention also provides an ablating system for the ablating perfusion of the renal artery sympathetic nerve. The ablating system comprises the catheter and a sheath pipe, and with match of the bending degree control, good controllability is realized.

Description

Technical field [0001] The invention belongs to the technical field of medical devices, and particularly relates to a renal artery sympathetic nerve ablation perfusion tube, its application catheter and an ablation system. Background technique [0002] When performing renal artery sympathetic nerve ablation, a perfusion catheter needs to pass through the aorta into the branches of the renal artery, and the catheter needs to bend about 90 degrees. After entering the renal artery, because the renal sympathetic nerve is distributed in the outer layer of the renal artery and beyond, it is necessary to place the ablation electrode against the ventral, dorsal, upper, and lower sides of the renal artery, and perform precise torsion of the catheter Manipulation. [0003] Commonly used perfusion catheters now include a handle, a tube body part and a porous electrode. The porous electrode is connected to the front end of the tube body part and the handle is connected to the back end of the ...

AI Technical Summary

Problems solved by technology

[0004] At present, the perfusion catheters commonly used for ablation function are polymer material tubes, and a few are metal tubes. The tubes have strong plasticity and will maintain a certain bending shape after bending, so that the torque when twisting the catheter in the curved channel Difficult conduction, with the disadvantage of difficult operation

At the same time, there is a relatively curved catheter head, which is difficult to rotate in the narrow space inside the renal artery. When the operator needs to rotate the catheter to the dorsal or ventral position, there is a greater risk of damage to the blood vessel

Images