Method and device for acquiring head end contact force of flexible magnetic catheter
An acquisition method and catheter head technology, which is applied in the field of acquisition of contact force at the head end of a flexible magnetic catheter, can solve the problems of arrhythmia recurrence and insufficient ablation damage, and achieve the effect of simple method, effective contact force and safety
Active Publication Date: 2020-09-08
绍兴梅奥心磁医疗科技有限公司
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Problems solved by technology
If the tension at the tip of the catheter is too small, it is easy to cause insufficient ablation damage, resulting in short-term or long-term recurrence of arrhythmia
Method used
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[0046] In order to further illustrate the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0047] In related technologies, the acquisition of the contact force between the catheter and the endocardium includes the following two methods:
[0048] Method 1: By installing a three-coordinate pressure sensor at the tip of the catheter to sense the contact pressure from the positive tip of the catheter and the side edge of the tip within 360 degrees. The principle is: the degree of deformation of the piezoelectric crystal spring by the external force is proportional to its strength, and the instantaneous pressure and its change can be quickly calculated by correcting the parameters empirically.
[0049] Method 2: The light diffraction catheter is used to measure the contact force between the catheter and the...
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The invention provides a method and a device for acquiring head end contact force of a flexible magnetic catheter. The method is used for obtaining the contact force between a flexible magnetic catheter and endocardium when the flexible magnetic catheter is used for carrying out repair treatment on the heart part. The method comprises the following steps: establishing a relation comparison table of the contact force and the contact type between the head end of the flexible magnetic catheter and the endocardium in advance; obtaining the contact type between the head end of the current flexiblemagnetic catheter and the endocardium; and searching a relation comparison table according to the contact type so as to obtain the contact force between the flexible magnetic catheter and the endocardium. According to the method for obtaining the head end contact force of the flexible magnetic catheter, in the process of carrying out an operation through the flexible magnetic catheter, the contactforce between the flexible magnetic catheter and the endocardium under the corresponding contact type can be searched according to the relation comparison table only by acquiring the contact type between the head end of the flexible magnetic catheter and the endocardium, so that the instantaneous contact force of the head end of the flexible magnetic catheter can be monitored in real time, and the treatment effect is improved.
Description
technical field [0001] The invention relates to the technical field of medical equipment, in particular to a method and device for obtaining contact force at the head end of a flexible magnetic catheter. Background technique [0002] In the existing magnetic navigation technology, it only involves the measurement and calculation of the contact pressure of the head end of the hard manual catheter, but when the flexible magnetic catheter is used for surgery, the contact force between the flexible magnetic catheter and the endocardium cannot be measured and calculated . Therefore, the contact pressure between the catheter tip and the endocardial surface cannot be judged in real time. In radiofrequency catheter ablation, measuring the contact pressure at the tip of the catheter is crucial to control the safety and short-term and long-term efficacy of the operation. If the tension at the tip of the catheter is too high instantaneously, it is easy to induce complications such as...
Claims
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Patent Timeline
Login to View More IPC IPC(8): A61B18/14A61B17/00A61B34/20
CPCA61B18/1492A61B17/00A61B34/20A61B2018/00351A61B2018/00577A61B2018/00773A61B2017/00707A61B2017/00716
Inventor 卢才义陈越猛张新龙张煊浩林志嵩
Owner 绍兴梅奥心磁医疗科技有限公司