Body cavity plugging device with double-blocking effect and application thereof

Abstract

The invention introduces a body cavity blocking device with a double-blocking effect, which comprises a guide wire, a conduit and a blocking object, wherein one end of the guide wire passes through the conduit and the body cavity of a blocking object; the far end of the blocking object and the guide wire are fixed; and an unfolded blocking object is axially compressed by drawing the near end of the guide wire so as to form a plug-shaped blocking object. The device is characterized in that: a balloon is arranged at the front end of the blocking object; the tail end of the conduit is provided with a Y-shaped seat, and a straight pipe of the Y-shaped seat is sleeved at the tail end of the conduit; and the guide wire passes through the straight pipe of the Y-shaped seat, and the drawing end of the guide wire extends outside the Y-shaped seat. The blocking device for blocking a barrier in the body cavity, provided according to the technical scheme, can be effectively applied to blockage, fixation and pulloff of thrombus and calculus in the body cavity.

Description

technical field [0001] The invention relates to a medical device for blocking obstacles in body cavity tubular organs, in particular to a body cavity blocking device with double blocking effects and its application. Background technique [0002] Ureteral calculus is a common disease in urology, and more than 90% of ureteral calculi are formed in the kidney and then descend into the ureter. Colic occurs when a stone becomes lodged in the ureteropelvic junction and obstructs it, or when the stone moves within the ureter. At present, the common surgical method for treating ureteral calculi is ureteroscopic lithotripsy (URL). "URL" mainly uses open perfusion under TV monitoring, or inserts a guide wire or ureteral catheter for guidance, and pushes the ureteroscope into the ureter. , After seeing the stone, if the stone is large, use lithotripsy equipment to crush the stone, and use perfusion and flushing to keep the vision clear during the stone crushing. [0003] Although the...

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Problems solved by technology

[0003] Although the "URL" treatment method has many advantages, it also has disadvantages. First, due to the dilatation of the ureter above the obstruction and the flushing effect during perfusion, debris generated during the lithotripsy process and stones near the renal pelvis in the upper ureter can easily enter the renal pelvis and calyces , leading to the failure of lithotripsy or the formation of residual stones in the kidney. Second, during the lithotripsy process, the stones are always in an active state, which brings great inconvenience to the surgeon, prolongs the operation time, and increases the risk of the operation. In order to reduce the "URL "Calculus moves up during surgery. Chinese invention patent CN200910057068.2 discloses "a body cavity blocking device", which includes a guide wire, a catheter, and a blocking object. One end of the guide wire passes through the catheter and the blocking object. cavity, the distal end of the occluder is fixed to the guide wire, and the proximal end of the guide wire is pulled, the expanded occluder is axially compressed to form a plug-like occluder, which is flat and membranous Occluder, the proximal end of which is secured to the catheter

However, the process of axially compressing the occluder in this occlusion device to form a plug-like occlusion is a random process, and the shapes of the formed plug-like occluders are different, resulting in the The lumen wall is not tightly bonded, and the ureter cannot be completely and tightly sealed, and the formation of residual stones after lithotripsy cannot be completely avoided. At the same time, it cannot prevent a large amount of perfusate from flowing into the kidney, resulting in excessive intrarenal pressure.

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