Magnetic positioning cold saline radiofrequency ablation lead

Abstract

The invention discloses a magnetic-positioning cold saline radio frequency ablation electrode catheter, and aims to improve the safety of an operation. A double-hole tube is connected between a catheter body and an electrode end tube; an inner hole of the double-hole tube is a first tube cavity; a second tube cavity is formed in the first tube cavity eccentrically; a pull wire steel wire is fixed in the tube wall of the near end of the electrode end tube and outside the far end of the second tube cavity; the end part of the far end of the pull wire steel wire is connected with an end electrode and the near end of the pull wire steel wire is connected with a control handle device through the second tube cavity and the catheter body; an electromagnetic sensor and a pressure sensor are arranged in the electrode end tube; a temperature sensor is arranged in the end electrode. Compared with the prior art, the magnetic-positioning cold saline radio frequency ablation electrode catheter has the advantages that the end electrode can bend to a certain degree by adjusting bending of the double-hole tube; the electromagnetic sensor and the pressure sensor can position the electrode end tube of the catheter and measure the clinging degree; the pull wire steel wire is used for preventing the end electrode from being separated from the electrode end tube, so a protection effect is achieved and the operation is safer and more reliable.

Description

technical field [0001] The invention relates to a medical operation instrument, in particular to an instrument for electrophysiological interventional treatment and mapping of the heart. Background technique [0002] In recent years, due to its unique safety, accuracy and efficiency, the 3D mapping system has been widely used in the field of international and domestic clinical cardiac electrophysiology for the mapping of various complex arrhythmias and catheter radiofrequency ablation. Three-dimensional cardiac mapping has greatly changed the traditional cardiac electrophysiological methods. Traditional cardiac electrophysiological methods use X-ray imaging or contrast imaging to obtain structural information in the human body. On the one hand, this method increases the exposure time of patients and doctors to X-rays, and also increases the use of contrast agents. The patient causes injury, and the resulting image is a two-dimensional image, which increases the difficulty o...

AI Technical Summary

Problems solved by technology

First of all, the fixation of the ablation electrode structure is mainly to insert the ablation tube and the saline tube into the electrode shell, and stick them together through the adhesive. The connection method is easy to leave a gap between the ablation electrode and the electrode shell, and the High temperature tends to age the adhesive, lose its viscosity, and increase the risk of the ablation electrode falling off, and the ablation electrode falling off in the heart can easily cause irreversible harm to the patient

Second, it can be seen from the attached figure that the temperature sensor is close to the channel of the saline pipe and is not in contact with the inner wall of the electrode casing, so it is very easy to make the measured temperature lower than the actual temperature during the ablation process, causing risks during the ablation process

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