Expansion structure of self-limiting high-pressure expansion saccule

Abstract

The invention relates to an expansion structure of a high-pressure expansion saccule, comprising an expandable saccule and an outer conduit used for fixing two ends of the expandable saccule. The expansion structure is characterized in that the outer conduit comprises an outer conduit main body and a limit pipe, wherein the outer conduit main body is divided into two sections which are mutually sleeved, a slideway is arranged on the pipe wall at the front end of the outer conduit main body, a section of limit sleeve is arranged in an inner cavity at the far end of the outer conduit main body, a hook which is penetratively sleeved in the slideway of the outer conduit main body is arranged on the outer wall of the near end of the limit pipe, and simultaneously, the front end and the rear end of the expandable saccule are respectively and fixedly connected with the outer conduit main body and the far end of the limit pipe to form the expansion structure of the self-limiting high-pressure expansion saccule. Therefore, the expansion structure is extremely beneficial to ideally-expanded compressed centrum, and simultaneously can reduce the longitudinal swelling capacity, provide effective reset function in the operation process, judge the position of the expandable saccule through observation marks and the marking position and ensure that the expandable saccule can freely reach an affected part.

Description

technical field [0001] The invention relates to a medical device, in particular to an expansion structure of a self-limiting high-pressure expansion balloon, which can be used as a pretreatment device before introducing a medium in the treatment of fractured vertebral bodies of osteoporosis patients. Background technique [0002] Vertebral fractures can lead to dysfunctional pain that lasts for several months. This pain can cause the patient to lose labor and exercise capacity, and can quickly cause loss of limb function, atelectasis and pneumonia, deep vein thrombosis and pulmonary embolism, etc. Fatal complications. In addition, vertebral body compression fractures were also the reason why many elderly people could not take care of themselves and lost the ability to live independently in the past. The use of a large amount of drug treatment often causes drug side effects and drug dependence, and most patients do not accept or cannot tolerate surgical treatment. [0003] A...

AI Technical Summary

Problems solved by technology

[0007] Show through actual use: although the above-mentioned technical scheme proposed by the applicant can play a corresponding role, the balloon structure in the original design scheme 1 is in the same direction as the inner and outer catheters due to the expansion and expansion of the balloon. Axial, so it is very easy to cause the axial expansion of the balloon to precede the lateral expansion, which is not in line with the needs of the affected area in the treatment of general patients. Excessive longitudinal expansion will reduce the lateral expansion and cannot effectively play a good role. The reset effect may cause the failure of the operation

The structure in design scheme 2, although through the several through holes provided on the outer catheter at one end of the expansion balloon area, the through holes perpendicular to the outer catheter are used to promote the expansion of the balloon to realize the expansion perpendicular to the direction of the catheter. Balloon expandable structure, but still not entirely ideal

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