Catheter head end contact force monitoring method and system

Abstract

The invention provides a catheter head end contact force monitoring method and system. The method is used for monitoring the contact force between a catheter and a lesion part when the lesion part isrepaired and treated through the catheter, and comprises the steps: building the corresponding relation between the contact force and indication information in advance; and obtaining the contact forcebetween the current catheter and the focus part, and presenting indication information based on the corresponding relationship so as to monitor the contact force. According to the method for monitoring the contact force of the head end of the catheter, the corresponding relation between the contact force and the indication information is established in advance, so that the indication informationcorresponding to the current contact force can be presented according to the corresponding relation when the contact force between the catheter and the focus part is obtained; and therefore, an operator can conveniently obtain the contact force condition of the head end of the catheter according to the indication information so as to guide the surgical operator in real time and adjust catheter control in time, and the problems of complications, invalid ablation and short-term and long-term recurrence are avoided.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a method and system for monitoring the contact force at the tip of a catheter. Background technique [0002] The principle of catheter radiofrequency ablation is: manipulate the catheter outside the body of the patient so that the surface of the large-head electrode at the tip of the catheter contacts the endocardial tissue at the site to be ablated as stably as possible, and then emits radiofrequency current to rapidly heat the myocardial tissue below the electrode surface until these tissues Injury and necrosis, loss of electrical conductivity. The effectiveness of ablation with a manual catheter depends primarily on: contact area, contact quality, ablation energy, ablation time, tissue impedance, and adjacent tissue temperature. Of the above factors, the least controllable is the quality of catheter-to-endocardial contact. [0003] Although the catheter currently u...

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Problems solved by technology

[0003] Although the catheter currently used clinically can obtain the contact force between the catheter and the tissue, it does not have the function of monitoring the contact force between the catheter and the tissue, so it is impossible to determine the quality of the contact between the catheter and the endocardium, which affects the effect of catheter radiofrequency ablation

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