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Temperature controllable cryoablation system

A technology of target temperature and control loop, which is applied in the direction of cooling surgical instruments, surgical instrument parts, medical science, etc., can solve the problems that cannot meet the different needs of atrial fibrillation cryoablation, and achieve the best cooling effect, stable ablation mode, The effect of low surgical risk

Active Publication Date: 2019-11-19
SYNAPTIC MEDICAL (BEIJING) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the known cryoablation systems also have certain limitations. They can only operate at a constant cooling power, which cannot meet the different requirements for the lowest temperature in the treatment of atrial fibrillation cryoablation. There is a demand for the ablation system

Method used

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  • Temperature controllable cryoablation system
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  • Temperature controllable cryoablation system

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Embodiment Construction

[0043] The technical solutions of the present invention will be further described in detail below through exemplary embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0044] figure 1 Shown is a schematic structural diagram of a temperature-controllable cryoablation system 10 according to an embodiment of the present invention. As attached figure 1 As shown, the system 10 may include a catheter 12, a fluid delivery unit 13 and a control unit 14.

[0045] The catheter 12 includes an elongated main body tube including a central chamber, and an expandable element, such as a balloon, is provided at the distal end of the main body tube. The distal end usually refers to the end close to the patient away from the operator, and the proximal end usually refers to the end close to the operator. One or more channels or pipes are provided in the central cavity of the main body tube, such as fluid conveying channel...

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Abstract

The invention provides a temperature controllable cryoablation system including a catheter, a fluid delivery unit and a control unit, wherein the catheter includes a central chamber and a balloon located at the distal end of the catheter; the central chamber is internally provided with an input channel for a frozen fluid to input into the balloon and an outflow channel for the frozen fluid to flowout of the balloon; the fluid delivery unit supplies the frozen fluid and discharges the frozen fluid; the control unit controls the fluid delivery unit to control the temperature of the balloon to approach the target temperature value according to the target temperature value. During the steady-state operation of the cryoablation system, by controlling the input pressure of the frozen fluid, theballoon temperature at the distal end of the catheter can approach the target temperature value, so that the surgical risk is relatively small, and an ablation mode is safer and more stable under thecondition reaching same ablation depth.

Description

Technical field [0001] The invention relates to a cryo-ablation system, in particular to a cryo-ablation system that can control the freezing temperature of a balloon. Background technique [0002] In view of the treatment risks of radiofrequency ablation for patients with arrhythmia, the current cryoablation interventional therapy technology has also begun to be applied in clinical practice. Cryo-ablation uses liquid nitrogen-like liquefied gas as the source of freezing fluid, and absorbs and evaporates liquid nitrogen to take away tissue heat and reduce the temperature of the target site to a certain temperature. Abnormal electrophysiological cells and tissues are destroyed and will not be frostbited. , Thereby reducing the risk of arrhythmia. [0003] However, the known cryoablation system also has certain limitations. It can only operate with a constant refrigeration power, which cannot meet the different requirements for the minimum temperature in the treatment of atrial fibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/02
CPCA61B18/02A61B2018/0262A61B2018/00714A61B2018/00577A61B2018/0094A61B2017/003A61B2018/0022A61B2018/00791A61B2090/064A61B2018/0212G16H40/63A61B2018/00642
Inventor 龚杰耿坦韩博阳刘彦宾冯骥彭博
Owner SYNAPTIC MEDICAL (BEIJING) CO LTD
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