Intrahepatic bile duct coated stent and use method thereof

A technology of covered stent and inner bile duct, which is applied in the field of medical devices, can solve problems such as difficult handling, uncertain expansion effect, and complicated disease, and achieve the effect of avoiding the right hepatic duct and simple structure

Pending Publication Date: 2018-06-29
刘建强 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hepatolithiasis combined with intrahepatic infection is mostly complicated, difficult to deal with, and poor prognosis
4. Minimally invasive liver-protecting stone extraction. On the basis of ERCP endoscopy, the duodenal papilla balloon is used to dilate the outlet of the bile duct, and the ERCP fiber endoscope is sent into the common bile duct, through the common bile duct to the intrahepatic bile duct, and through the intrahepatic The bile duct balloon dilates the intrahepatic bile duct, expands the inner diameter of the intrahepatic bile duct, and unblocks the stone removal channel. At that time, there were some problems with the abo

Method used

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  • Intrahepatic bile duct coated stent and use method thereof
  • Intrahepatic bile duct coated stent and use method thereof
  • Intrahepatic bile duct coated stent and use method thereof

Examples

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Embodiment Construction

[0028] The content of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments of the description:

[0029] Such as figure 1 , 2 Shown is a schematic diagram of an embodiment of an intrahepatic bile duct covered stent provided by the present invention.

[0030] An intrahepatic bile duct covered stent, which includes a covered stent 11; a non-coated area 13 that allows liquid substances to pass through and flow to the end opening of the covered stent 11 is provided on a local area of ​​the side wall of the covered stent 11.

[0031] When the covered stent is subjected to external force, its caliber becomes smaller; after the external force is removed, its overall caliber can return to the designed caliber.

[0032] The non-coated area 13 is arranged on the side wall of the tail end of the stent-graft 11 . Generally speaking, in order to prevent the stent graft 11 from being implanted in the body from being too long...

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PUM

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Abstract

The invention relates to an intrahepatic bile duct coated stent and a use method thereof. The stent comprises a coated stent body; a local area of the side wall of the coated stent body is provided with a non-coated area which contains liquid substances, wherein the liquid substances can penetrate through and flow into an opening of the end portion of the coated stent body. The use method of the intrahepatic bile duct coated stent comprises the following steps that a, the coated stent body 11 sleeves a stent conveying device; b, the stent is implanted; c, the coated stent body 11 is released;d, the coated stent body 11 is drawn out by drawing a traction rope 14, and then the operation of breaking stone and removing the stone is conducted immediately. The stent has the advantages of beingsimple in structure, convenient to operate and the like.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an intrahepatic bile duct covered stent and its application method. Background technique [0002] Intrahepatic bile duct stones are often combined with hepatic bile duct stenosis. The principle of treatment for primary hepatic bile duct stenosis combined with stones is to remove the lesion, remove the stones, relieve the obstruction, and unobstructed drainage. However, due to the existence of bile duct stricture, the treatment has brought great difficulties, and the treatment effect has not been satisfactory, which has also become an important reason for stone recurrence and reoperation. Hepatobiliary stricture is still the main problem in biliary surgery. The hepatic bile ducts are often combined with extrahepatic and extrahepatic bile duct stones, resulting in bile duct obstruction; inducing local infection and aggravating bile duct strictures, making it difficult to expel the s...

Claims

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Application Information

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IPC IPC(8): A61F2/07
CPCA61F2/07A61F2002/041
Inventor 刘建强王雯
Owner 刘建强
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