Electrotome, therapeutic equipment comprising same and control method and device

Abstract

The invention relates to an electrotome, therapeutic equipment comprising the same and a control method and device. The electrotome comprises a catheter assembly and a balloon arranged on the catheterassembly; the catheter assembly is provided with communicating holes communicating to an inner cavity of the balloon; the catheter assembly can fill an expanding medium into the inner cavity of the balloon through the communicating holes; the outer surface of the balloon is provided with an electrode which can deform with expansion and contraction of the balloon; and the electrode is arranged onthe outer surface of the balloon, and therefore, the electrotome can enter a trachea one time under the intervention of a bronchoscope, and can perform two operations of electrotome cutting and balloon expanding, so that the operation time is saved, and the operation safety is also enhanced accordingly. Especially, the electrode can deform with the expansion and contraction of the balloon; by controlling the amount of expanding medium filled into the balloon, the expanding speed and degree of the balloon are controlled, and thus, the contact speed and depth between the electrode and the ablated tissue can be controlled, thus realizing directional cutting of narrow tissue in an airway.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an electric knife that can be used in the treatment of airway stenosis. Correspondingly, the present invention also relates to a treatment device with the electric knife, and a control method and device for the electric knife. Background technique [0002] Airway narrowing is a respiratory disease. At present, bronchoscopic interventional therapy is usually used, including stent placement, thermal ablation, balloon dilatation, and freezing. Thermal ablation generally includes laser, high-frequency electric knife, microwave and other methods, among which: high-frequency electric knife is the high-frequency high-voltage current generated by the tip of the electrode to perform thermal ablation on the block that the electrode is in contact with, so as to realize the separation and coagulation of body tissues , to achieve the purpose of cutting and hemostasis. Because the cutting e...

AI Technical Summary

Problems solved by technology

[0003] However, in the combined treatment of high-frequency electrosurgical cutting combined with balloon dilatation, it is difficult to control the depth of high-frequency electrosurgical cutting and the position of the incision formed, combined with balloon dilation, it may lead to asymmetric incision of scar tissue during balloon dilation , causing mediastinal emphysema

However, the high-frequency electric knife and the balloon need to be used alternately under the intervention of the bronchoscope, which takes a long time and reduces the safety of the operation.

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