Novel intraluminal tumor cryosurgery ablation catheter and operation method thereof

Abstract

The invention relates to a novel intraluminal tumor cryosurgery ablation catheter and an operation method thereof. The novel intraluminal tumor cryosurgery ablation catheter comprises a balloon, an air inlet pipeline, an air return pipeline, a vacuum pipeline, and an air inlet connector, an air return connector and a vacuum connector, which are respectively connected with near ends of the air inlet pipeline, the air return pipeline and the vacuum pipeline in seal mode, wherein the vacuum pipeline is located on the exteriors of the air inlet pipeline and the air return pipeline. The novel intraluminal tumor cryosurgery ablation catheter further comprises a buffer unit, wherein the buffer unit is arranged at the far end of the air inlet pipeline, and arranged in the balloon, the buffer unit is provided with a buffer air outlet, the near end of the buffer unit is connected with the far end of the air inlet pipeline or the air return pipeline in seal mode, the far end face of the balloon is in a concave shape, the far end of the buffer unit is connected with the far end of the balloon in seal mode, and a connection point between the far end of the buffer unit and the balloon is arranged at the middle of the concave portion of the far end of the balloon or in the far end of the balloon. The novel intraluminal tumor cryosurgery ablation catheter cooperates with an endoscope so as to adapt to complex cavity environments, and the far end of the balloon is large in contact area, and thereby guarantees a large freezing range.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a novel intracavity tumor cryoablation catheter and an operating method thereof. Background technique [0002] Since Cooper created the liquid nitrogen cryotherapy device in 1963, it has achieved remarkable results through clinical application. For more than half a century, a novel medical method-cryogenic surgery has been widely used clinically at home and abroad. In the early 1980s, low-temperature surgical technology was introduced into China. Hospitals or medical research departments in various regions combined with local scientific research units or factories to independently design and develop a batch of experimental prototypes of various types of low-temperature surgical instruments, the most common of which are The most popular is the hand-held and hose cabinet-type liquid nitrogen cryotherapy device, which is provided to hospitals for clinical popularization of...

AI Technical Summary

Problems solved by technology

For the cystic cavity, the distal end of the catheter is more required to be attached, and the distal end of the buffer unit of the patent is not fixed to the distal end of the balloon. The balloon lacks an overall support, and the balloon part lacks strong rigidity. When this structure enters some relatively narrow lumens or encounters resistance, the balloon is easily deformed and folded, and even friction with the buffer unit causes the balloon to rupture, which increases the difficulty and risk of placement

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