Intracavity stent conveying system for pre-implanting saccule at front end

Abstract

The invention relates to an intracavity stent conveying system for pre-implanting a saccule at a front end, which belongs to the field of medical apparatuses. The saccule and a stent are designed integrally in the system; the saccule is designed at the far end of the stent; the saccule is arranged on an inner core and is separated from the stent, but is connected with the stent end to end; the farend and the near end of the saccule are provided with heavy metal markers not transmitting X rays; the stent is arranged at the near end of the saccule and is positioned in a cavity gap between the inner core and an outer sleeve; and the near end of the outer sleeve is provided with a safety lock. The release of the stent depends on the withdrawal of the outer sleeve relative to the inner core; and the stent can be released by unscrewing the safety lock, fixing the inner core and withdrawing the outer sleeve. The saccule can expand target lesions before releasing the stent, can anchor the inner core during releasing the stent, and can further expand the stent after releasing the stent. The intracavity stent conveying system makes stent implantation simpler, saves medical cost, shortens operation time, and reduces complications; and the saccule can anchor the inner core of the conveying system in operation so as to release the stent accurately.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an intracavitary stent delivery system with a front-end balloon preset. Background technique [0002] Since the European scholar Gruntzig invented the double-lumen balloon catheter in 1974, percutaneous transluminal angioplasty (PTA technology: the use of catheter technology to expand or recanalize arterial stenosis or occlusive lesions caused by atherosclerosis or other reasons) Method) was soon used clinically in medical units of some technologically advanced countries, and achieved remarkable effects in the medical field, and became the first choice for the treatment of vascular stenosis-occlusive lesions. Subsequently, many scholars have carried out many studies and improvements on the materials, configurations, and structures of catheters and balloons, and extended their application from the vascular system to the non-vascular system. [0003] With the increase of cases, the ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the existing stent delivery system, and provide an intracavitary stent delivery system capable of accurate positioning and balloon-stent integration

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