An extrahepatic vascular anastomosis stent and its delivery system

Abstract

The invention discloses an extrahepatic vascular anastomosis stent and a conveying system thereof. The extrahepatic vascular anastomosis stent includes a stent body, a lead-in pipe, a soft pipe, a sleeve pipe, a metal pipe, a fixing device, a screw and a handle; the metal pipe is mounted at one end of the handle, the fixing device and the screw are mounted on the metal pipe, the screw is located between the handle and the fixing device, and the soft pipe is connected to the end, away from the handle, of the metal pipe; the lead-in pipe is mounted at the end, away from the metal pipe, of the soft pipe; the soft pipe is sleeved with the sleeve pipe, and the stent body is mounted on the lead-in pipe. By the adoption of the extrahepatic vascular anastomosis stent and the conveying system thereof, two blood vessels can be drawn close and anchored, and therefore the parallel blood vessels are subjected to anastomosis; the extrahepatic vascular anastomosis stent and the conveying system thereof are used for treating portal hypertension, history that portacaval and mesocaval shunt needs surgical laparotomy operations is changed so that the portacaval and mesocaval shunt can be conducted inan interventional and minimally invasive mode, pain of patients suffering from the portal hypertension is greatly reduced, and the therapeutic effect of the extrahepatic vascular anastomosis stent isimproved.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an extrahepatic vascular anastomosis bracket and a delivery system thereof. Background technique [0002] The traditional treatment methods for portal hypertension are surgery with portacaval shunt or interventional therapy with TI2PS. Surgical portosystemic shunts are prone to hepatic encephalopathy because the shunt diameter is difficult to control, while intrahepatic portosystemic shunt TIPS is prone to stent restenosis or occlusion because the shunt stent is located in the liver and the shunt channel is long. The cylindrical design of the stent makes it difficult to anastomose and fix two parallel blood vessels. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings in the prior art, and propose an extrahepatic vascular anastomosis stent and its delivery system. [0004] In order to achieve the above object, the present inven...

AI Technical Summary

Problems solved by technology

Surgical portosystemic shunts are prone to hepatic encephalopathy because the shunt diameter is difficult to control, while intrahepatic portosystemic shunt TIPS is prone to stent restenosis or occlusion because the shunt stent is located in the liver and the shunt channel is long. The cylindrical design of the stent makes it difficult to anastomose and fix two parallel blood vessels

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