Rapid exchange mapping catheter and method of making and using same

A catheter and mapping technology, applied in application, diagnostic recording/measurement, medical science, etc., to achieve the effect of shortening the operation time

Active Publication Date: 2011-12-14
APT MEDICAL HUNAN INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no interventional device that can reliably and accurately perform electrophysiological mapping on

Method used

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  • Rapid exchange mapping catheter and method of making and using same
  • Rapid exchange mapping catheter and method of making and using same
  • Rapid exchange mapping catheter and method of making and using same

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0023] like figure 1 As shown, the rapid exchange mapping catheter of the present invention is provided with a tubular outer tube 1 at its distal end, and a tubular inner tube 2 is arranged in the outer tube 1, and the inner tube 2 and the outer tube 1 are welded at the distal end 5 . The outer tube 1 has a guide wire hole 6 on the proximal side, such as Figure 5 As shown, the wire guide hole 6 is welded to the proximal end port of the inner tube 2, the distal side 61 of the guide wire hole 6 is welded to the proximal port side of the inner tube 2, and the proximal side 62 of the guide wire hole 6 The tube wall opposite to the proximal end port side of the inner tube 2 is bent to the proximal side 62 of the guide wire hole 6 in the direction of the guide wire hole 6 with a circular arc transition 63 and then welded, and then from the distal...

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Abstract

The invention discloses a fast-switching and mapping catheter, and a preparation method and an application method thereof in order to realize the fast mapping of electrocardiosignals in a coronary artery. The fast-switching and mapping catheter is characterized in that an inner catheter and an outer catheter are welded and connected at the end part on the far end, the lateral side on the near end of the outer catheter is provided with a thread hole, the thread hole and the port on the near end of the inner catheter are welded and connected, and the end part on the far end of the outer catheter is provided with a ring electrode. The preparation method comprises the following steps: preparing the outer catheter, preparing the inner catheter, welding the two ends of the inner catheter and the outer catheter, assembling wires on the ring electrode, welding a stainless steel tube and the outer catheter, and assembling joints. Compared with the prior art, the invention utilizes the thread having a small diameter to transfer the catheter into the far-end mapping position, thereby greatly shortening the operation time; and electrophysiological mapping can be carried out on descending anterior branches and circumflex branches of the epicardial coronary artery and the inside of the right coronary artery, thereby providing help for the radio-frequency ablation operation on patients of which the ventricular tachycardia is focused on the epicardial myocardium, and providing a more precise basis for accurate positioning during the operation.

Description

technical field [0001] The invention relates to a medical device and its preparation method and use method, in particular to a catheter for mapping and diagnosing coronary arteries and its preparation method and use method. Background technique [0002] At present, the radiofrequency ablation treatment of idiopathic ventricular tachycardia (ventricular tachycardia) has a high success rate, but the success rate of radiofrequency ablation treatment of ventricular tachycardia in other structural heart diseases such as coronary heart disease is still limited. For patients with clinically encountered VT lesions located in the subepicardial myocardium, radiofrequency ablation methods based on endocardial mapping are often powerless. Since the coronary arteries and their branches are densely distributed in the myocardium wall in a "tree network", the internal diameter of the coronary arteries and their branches in normal people is only 3-4 mm, and the structure is complex. Conventi...

Claims

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Application Information

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IPC IPC(8): A61B5/0402A61B5/042
Inventor 成正辉
Owner APT MEDICAL HUNAN INC
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