Balloon type flexible microwave ablation catheter and ablation system and method adopting balloon type flexible microwave ablation catheter

A microwave ablation and flexible tube technology, applied in catheters, microwave surgical instruments, parts of surgical instruments, etc., can solve the problems of incomplete cryoablation, long operation time, increased patient pain, etc., and achieve irreversible electrical conduction, Short operation time and complete ablation effect

Active Publication Date: 2019-12-17
SINOSURGICAL HEALTHCARE TECH ZHEJIANG CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, radiofrequency ablation of the renal artery ablates the inner wall of the renal artery point by point, and cannot form a ring-shaped, continuous ablation zone to block sympathetic nerve conduction. High dependence, which can easily lead to incomplete ablation and treatment failure
In recent years, cryoablation balloon catheters have been introduced clinically to perform cryoablation of renal artery sympathetic nerves. Although this catheter can perform cryoablation of renal arteries, clinically there are still shortcomings of incomplete cryoablation and repeated illnesses
In addition, the frozen balloon blocks the renal artery for a long time to block the blood flow, which may cause ischemic necrosis of the kidney, bringing unacceptable medical accidents to the patient, and the risk is extremely high.
The existing cryoballoon catheter directly sprays the refrigerant into the balloon, which is easy to cause the balloon to burst, and the risk is extremely high
When the refrigerant is sprayed into the balloon, the wall of the balloon is gradually cooled, which makes the cooling speed of the balloon slower
At the same time, the rewarming time of the balloon wall after the treatment is also very long, which will inevitably prolong the operation time and increase the pain suffered by the patient.
[0006] When radiofrequency ablation catheters and cryoablation catheters are used to treat atrial fibrillation and pulmonary veins are isolated to treat atrial fibrillation, there are also the above shortcomings and deficiencies: incomplete ablation, recurrence of atrial fibrillation, recovery of electrical conduction, long operation time, and greater dependence on the experience of the operator high
[0007] Both radiofrequency ablation and cryoballoon ablation are physical contact ablation. It is often difficult to completely adhere to the inner wall of the renal artery and the vestibular vessel of the pulmonary vein which are not smooth. Incomplete ablation

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  • Balloon type flexible microwave ablation catheter and ablation system and method adopting balloon type flexible microwave ablation catheter
  • Balloon type flexible microwave ablation catheter and ablation system and method adopting balloon type flexible microwave ablation catheter
  • Balloon type flexible microwave ablation catheter and ablation system and method adopting balloon type flexible microwave ablation catheter

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0063] It should be noted that "flexibility" in the present invention is a well-known concept in the art, that is, relative to "rigidity", it means that the object can be bent moderately, preferably can be bent arbitrarily and can be restored; because the ball of the present invention The capsule-type flexible microwave ablation catheter can pass through the channels of human organs such as blood vessels and trachea, so the definition of "flexibility" above meets the flexibility and softness of catheters that can pass through the above-mentioned blood vessels and other organs.

[0064] In addition, because the position of the product of the present invention can be changed at will, the orientation words such as "up", "down...

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Abstract

The invention discloses a balloon type flexible microwave ablation catheter and an ablation system and a method adopting the balloon type flexible microwave ablation catheter. The balloon type flexible microwave ablation catheter comprises a flexible catheter body and a microwave radiation unit. A cooling liquid pipeline and a microwave signal transmission pipeline are arranged in the flexible catheter body; the microwave radiation unit is arranged at the distal end of the flexible catheter body and comprises a microwave radiator and a plurality of expandable balloons; the microwave radiator is connected with a microwave signal transmission line and used for transmitting microwave signals, and the microwave radiator is flexible; the microwave radiator is located in one expandable balloon or between two expandable balloons; and the expansion degree of the expandable balloons can be controlled through the hydraulic pressure of the cooling liquid pipeline. According to the balloon type flexible microwave ablation catheter, due to the fact that the catheter is flexible and bendable, the microwave radiator can pass through a natural cavity in a human body, such as a respiratory tract and a blood vessel to reach a focus position, thus preventing important organs from being punctured and injured and avoiding irreparable injuries to the human body.

Description

technical field [0001] The invention belongs to the field of microwave ablation medical devices, in particular to a balloon-type flexible microwave ablation catheter and an ablation system and method using the same. Background technique [0002] With the prolongation of life expectancy, my country has gradually entered into an aging society, and the prevalence rate of hypertension in the elderly has reached 40% to 60%. Despite the increasing number of safe and effective drugs, the current status of hypertension treatment is still poor. According to the "China Cardiovascular Disease Report 2016" data released in 2017, the prevalence of cardiovascular disease in China is currently on the rise. The number of patients with cardiovascular disease is about 290 million, of which there are about 270 million hypertensive patients. The absolute "big family" of cardiovascular disease, the mortality rate of cardiovascular disease exceeds that of tumors and other diseases, ranking first...

Claims

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Application Information

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IPC IPC(8): A61B18/18
CPCA61B18/1815A61B2018/1861A61B2018/0022A61B2018/00404A61B2018/00434A61B2018/00511A61B2018/00702A61B2018/00791
Inventor 戴春喜黄文星詹德志
Owner SINOSURGICAL HEALTHCARE TECH ZHEJIANG CO LTD
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