Drainage tube with good drainage effect for ERCP operation

A drainage tube and a technique for surgery, applied in the field of minimally invasive medical technology and surgical instruments, can solve the problems of insufficient drainage of pancreatic juice, limited, poor excretion of pancreatic juice, etc., and achieve the effect of preventing displacement

Inactive Publication Date: 2020-08-28
SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used pancreatic duct stents have limited side holes on the wall, and the pancreatic duct has many branches, so the side holes on the wall are not enough to drain the pancreatic juice in the branched pancreatic ducts.
For some pancreatic ducts without dilatation, after the placement of pancreatic duct stents, the wall of the pancreatic duct can even block the opening of the branch pancreatic duct, resulting in poor drainage of pancreatic juice in the branch pancreatic duct, thereby inducing hyperamylaseemia and acute pancreatitis

Method used

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  • Drainage tube with good drainage effect for ERCP operation
  • Drainage tube with good drainage effect for ERCP operation
  • Drainage tube with good drainage effect for ERCP operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, in this embodiment, option 1 is selected for the bile duct stent, the total length of the bile duct stent is 5-12 cm, the outer diameter includes 7-10 Fr, and correspondingly, its inner diameter is 5-8 Fr. The anti-displacement structure of the head of the bile duct stent in this embodiment and the anti-displacement structure of the tail are both flanks, the head barb hole and the head barb are located in the same direction, the tail barb hole and the tail barb are located in the same direction, and the head barb is located in the same direction. The direction of the spines is opposite to that of the tail barbs. The specific method of use is as follows: insert a duodenoscope through the mouth, and insert the zebra guide wire into the intrahepatic bile duct after successful bile duct cannulation. Insert the device first through the guide wire, and then insert the propeller or other devices with propulsion function, such as incision knife, expa...

Embodiment 2

[0045] Such as Figure 4 As shown in (a), in this embodiment, option 1 is selected for the bile duct stent. The anti-displacement structure at the head is in the shape of a single pigtail, with drainage microholes on the pigtail, and the anti-displacement structure at the tail is spherical. The specific method of use is as follows: insert a duodenoscope through the mouth, and insert the zebra guide wire into the intrahepatic bile duct after successful bile duct cannulation. Under the guidance of the guide wire, insert the bile duct stent and the pusher successively, and then place the bile duct stent and the propeller into the overtube, and insert the assembled device into the intrahepatic bile duct under the guidance of the guide wire, when the head of the overtube After exposure, the outer cannula is pulled back, and the tail of the bile duct stent naturally forms a spherical shape. Under the guidance of the guide wire, use the pusher to continue to push the bile duct stent...

Embodiment 3

[0047] Such as Figure 4 As shown in (b), in this embodiment, the bile duct stent is selected as Option 1. This embodiment is similar to Embodiment 1. The difference is that the anti-displacement structure of the head is a single pigtail shape. In this embodiment, the pigtail is set at a position On the same side as the barbed hole at the tail, the specific usage method is the same as in Example 1.

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Abstract

The invention provides a drainage tube with good drainage effect for ERCP operation. The drainage tube comprises a head part, a drainage part and a tail part which are connected in sequence, the drainage part comprises a slit pipe section, and the head part extends into a pipeline to be drained in a working state. According to the first scheme, the slit pipe section comprises at least three arc-shaped pipe walls with the same specification, the distances between the adjacent arc-shaped pipe walls are the same, the sectional areas of a plurality of drainage slits formed between the adjacent strip-shaped pipe walls are the same, grooves are formed in the two sides of each arc-shaped pipe wall, and oval side holes are formed by the grooves in the adjacent pipe walls. According to the second scheme, the slit pipe section comprises an arc-shaped pipe wall, the arc shape of the arc-shaped pipe wall is a major arc, a minor arc side matched with the major arc is a longitudinal crack, and a plurality of oval side holes spirally walking from top to bottom are formed in the arc-shaped pipe wall. The slit pipe section of the drainage part can achieve sufficient drainage, the drainage effect iskept, and the supporting force and tension of the drainage part can also be kept.

Description

technical field [0001] The invention relates to minimally invasive medical technology and surgical instruments, in particular to a drainage tube for ERCP operation with good drainage effect. Background technique [0002] Choledocholithiasis is a common and frequently-occurring disease in my country. Blockage of the common bile duct by stones can lead to poor bile excretion, which in turn induces complications such as acute cholangitis, obstructive jaundice, liver damage, and other manifestations such as chills, fever, abdominal pain, and jaundice. Severe cases may even lead to shock, and long-term calculus stimulation has the risk of cholangiocarcinoma, which is an important disease that endangers human health. The current treatment options for choledocholithiasis include open biliary tract exploration, laparoscopic biliary exploration, endoscopic retrograde cholangiopancreatography (ERCP) stone extraction, percutaneous transhepatic bile duct puncture (PTCD) + fistula dilatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00A61M25/04A61M25/09
CPCA61M25/0043A61M25/0067A61M25/0068A61M25/0082A61M25/04A61M25/09
Inventor 张诚
Owner SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
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