Esophageal Stent

By | May 6, 2012

Esophageal stent, it applies to esophageal stenosis, esophageal tracheal desolate, can not or do not want surgery esophageal cancer surgery in patients with eating difficulties. Advanced esophageal stent is to solve the esophageal stenosis can not eat and take a palliative treatment, that is: Esophageal cancer in the esophagus causing obstruction to install a tube to solve the problem of feeding patients. Its role is also limited to this, there is no treatment effect on the tumor itself.
1. Stent introduced esophageal stent used in the import and domestic, two kinds of silicone and metal stents, silicone stents are cheap, but less effective and more pain in patients after implantation, by eating temperature, easy to slip, there is less use. Z-shaped metal bracket and memory sub-metal stents, metal stents, but prices are still more expensive imports. z-shaped metal stents, the use of stainless steel bent into a Z-shaped steel mesh multiple, highly compressible, the lifting pressure wire may be due to elastic expansion of its restoration to its original barrel-shaped structure. Memory metal stents for the iron town of memory metal, shape memory using the function of the temperature of its woven into a tube shape, compressed into the small diameter of the inserter in the body in the body after the blast evoke the release of its shape memory, restore its original form tubular. Two metal stents are stents with outer membrane can be made into various shapes: the bell, the next bell, bell bottom, anti-reflux valve, recyclable, radiation, etc. can all stand with support.
Esophageal stent 2. How is esophageal stent placement using endoscopic meal or upper gastrointestinal Chai determine the location of the tumor, the length of the narrow, narrow mouth of the extent or the desolate location, to determine the location of stent placement, stent length, stent diameter. If necessary, placed after the first dilatation. Or upper gastrointestinal endoscopy to determine lesion length of food banks, select more than 2 cm at both ends of the stent with a membrane in the X-ray or gastroscopy under the two methods into or placed.
(1) endoscopy and X ray fluoroscopy with endoscopic insertion into law, the upper and lower edge of lesions observed and the corresponding position in the surface to mark, insert the guide wire, endoscopic removal of indwelling guide wire into the stent along the guide wire into the device, so that stand in the center of lesions, more than 2 cm at each end, and slowly release the stent, removal of implanted devices, X-ray was observed after stent position and anteroposterior X-intake, lateral view, to retain information for future reference.
(2) simple implantation under X-ray lesions identified by the location of the lock menu, and the upper and lower edge of the lesion to determine the corresponding surface marked by the mouth into the inserter, insert the esophagus in perspective, determine the location of the lesion stent Central, the slow-eluting stent, to complete the operation, removal of implanted devices.
(3) simply insert the gastroscope gastroscopic stents into the stomach by gastroscopy biopsy hole out of the guide wire, endoscopic removal of indwelling guide wire, stent along the guide wire into the device, so that stand in the center of lesions, two more than 2 cm each side, slowly release the stent, after the release of the case in the absence of resistance, together with the removal of the guide wire inserter, insert the endoscopic observation of another stent position. Adjustments when necessary.
Stent 3. Precautions and complications after esophageal stent in the common complications are: chest pain, bleeding, infection, stent migration, stent loss, stent blockage. Easily into the flow of early stent placement food, smaller meals, not eating dry food, to prevent stent obstruction and displacement: memory alloy metal stent implantation in patients can not eat cold food to prevent long-term support if the tumors shrink from the mouth off medium-and long into the mesh, can not use electric coagulation, laser recanalization, to prevent metal stents conductivity, thermal conductivity, causing esophageal burns, perforation, infection.

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