What function does medical nickel titanium guide wire have?

The different structure of the guide wire (the design of the guide wire sheath and core wire) determines the different characteristics of the guide wire. Different manufacturers of different series of guide wire have their own characteristics. So, what are the functions of medical nickel titanium guide wire?

What function does medical nickel titanium guide wire have?

1. The front end of the guide wire has the function of elasticity, does not damage the tissue, and is very smooth when wet. You can explore the bile duct or the pancreatic duct cavity, go into the bile duct or the pancreatic duct, pass through the obstruction or stenosis, guide the appendages, improve the success rate. It is the basis for successful diagnosis and treatment. In angiography, a guide wire may be used to explore the target catheter. The catheter is placed in the opening and can enter the guide wire at 11 o 'clock to guide into the bile duct. When used in combination with other instruments, care should be taken to adjust the distance between guide wire and catheter. An additional length of guide wire can also be inserted, allowing it to rebound and fold into a loop and hook into the target bile duct. Entering the target bile duct is the key to the smooth operation and the expected diagnosis and treatment effect.

2. Use guide wire to exchange various instruments, so that the operation is more accurate and safer. Flexible application of guide wire will shorten the operation time. When angiography is performed, a smart knife with a guide wire can be applied directly, and incision can be made as needed. If the guide wire needs to be cut into the bile duct, the cutter will not easily slip out of the bile duct, saving surgery time. If treatment is needed after incision, the guide wire can be penetrated into the bile duct or pancreatic duct again, the incision knife can be extracted, and the corresponding instrument can be replaced again. Remember not to remove the guide wire during the operation, because it is sometimes difficult to enter the original pipe when removing the guide wire. Double guide wire can be used when double or multiple stents are needed for hilar tumors. Flexible and successful application of guide wire can significantly improve work efficiency. This group showed an average reduction in surgical time of about 9 minutes.

3. Behind the front end of the guide wire is steel wire, so the strength of the guide wire can be used to increase the insertion force, so as to guide the basket and support to the target position. The rigidity of the guide wire can also be used to change the direction of the duodenum, thus making angiography and incision more smooth and reducing the occurrence of complications. When extracting intrahepatic bile duct stones, the guide wire should be placed into the target bile duct, and then the stone should be removed along the guide wire into the stone ball bag or stone basket. It is also critical to place the guide wire into the target bile duct before stent placement. This kind of work cannot be done without the rigidity of the guide wire.

4. The operation is difficult. When the duct repeatedly enters the pancreatic duct, the diaphragm muscle between the bile duct and the pancreatic duct can be pulled to the side of the pancreatic duct, so that the bile duct and the opening of the pancreatic duct are slightly separated, and the originally curved pancreatic duct will slightly straighten, which is conducive to the catheter going deep into the bile duct. During EST, excessive injection of contrast agent will cause high pressure in the pancreatic duct, damage the wall epithelium and the toxic effects of acinar contrast agent, and the pancreatic duct and parenchyma will be destroyed due to the activation of pancreatic enzymes by duodenal contents, resulting in self-digestion. The damage to the pancreatic duct wall was minimal and reduced the incidence of postoperative pancreatitis and hyperamylasemia. The X-ray impermeability of the guide wire can reduce the application of contrast media. Reduce the incidence of cholangitis and pancreatitis.

What is the specification of medical nickel titanium wire?

As with guide wire conduit, different manufacturers of guide wire specifications are not the same, the specification expression is also different. There are two kinds of domestic guide wire. One is long guide wire with a length of more than 1, 3m, and thicker guide wire is suitable for large catheters with a length of more than 6F. The other is a short guide wire with length less than 1,3 m, which is thinner and suitable for small catheters with length less than 5F. The guide wire is a straight fixed core with a soft section of about 5cm at the front.