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Cryoablation system

A refrigerant and pre-cooling technology, applied in the field of medical devices, can solve problems such as balloon contraction and balloon blockage, achieve good ablation effect, prevent balloon blockage or shrinkage, and improve the effect of target gas purity

Pending Publication Date: 2020-01-24
ACCUTARGET MEDIPHARMA (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a cryoablation system to solve the problems of easy balloon blockage and balloon deflation

Method used

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other Embodiment approach

[0109] In other implementation manners, the condensation structure 102 may also adopt a semiconductor refrigeration structure for realizing semiconductor refrigeration.

[0110] One of the implementation methods, please refer to Figure 6 , Figure 8 and Figure 10 , the system also includes a cooling device 112 and a solenoid valve 113 arranged between the condensation chamber 102 and the precooling device 104. In other examples, only the cooling device 112 or the solenoid valve can be provided. 113.

[0111] For one implementation, please refer to Figure 6 , Figure 8 , Figure 10 and Figure 13 , the system may further include: a vacuum pump 114 and a gas flow meter 115 .

[0112] After the liquid refrigerant enters the cooling device 112, it can enter the pre-cooling device 104 through the electromagnetic valve 113 for pre-cooling and then enter the balloon 105. The gas returns and can be sucked by the vacuum pump 9, and then flows through the gas flow meter 115 an...

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Abstract

The invention provides a cryoablation system. The cryoablation system comprises a gas source, a balloon, a precooling device, a condensation cavity and a condensation structure, wherein an inlet of the condensation cavity is used for accessing gas source gas provided by the gas source, a low-temperature environment formed in the condensation cavity can condense target gas in the gas source gas into a liquid refrigerant, the liquid refrigerant is collected at the bottom of the condensation cavity, an outlet of the condensation cavity is used for discharging the collected liquid refrigerant to precool the discharged liquid refrigerant by the precooling device, and the condensation structure is used for forming the low-temperature environment in the condensation cavity and catching water vapor in the condensation cavity. The cryoablation system can increase the purity of target gas such as N2O and completely eradicate or reduce balloon blockage or shrinkage to realize better cryoablationeffects.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a cryoablation system. Background technique [0002] Atrial fibrillation (AF) is a common arrhythmia, and its incidence rate will gradually increase with age, and the prevalence rate among people over 80 years old is more than 30%. Atrial fibrillation itself rarely causes death, and the main cause of death and disability is thromboembolic complications, especially stroke. The treatment of atrial fibrillation mainly relies on drug therapy, catheter ablation therapy and surgical treatment, each of which has certain limitations. Pulmonary vein isolation (PVI) is the cornerstone of atrial fibrillation ablation, and the circular cryoballoon can form a ring fit with the pulmonary vein ostium, so that PVI can be completed in a single step, which greatly reduces the difficulty and time-consuming of the operation, making the catheter The popularization and promotion of ablation therapy fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/02
CPCA61B18/02A61B2018/0022A61B2018/00285A61B2018/00357A61B2018/0212
Inventor 徐彬凯常兆华吴银龙杨迟李磊
Owner ACCUTARGET MEDIPHARMA (SHANGHAI) CO LTD
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