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A stent delivery system is a catheter-based device used to carry and place a stent inside a blood vessel, duct, or other tubular structure. The system holds the stent in a compressed form until it reaches the treatment site. Once positioned, the stent is expanded or released so it can support the passageway. Delivery systems are designed for specific stent types and body locations.
read more about stent delivery system ...A stent delivery system is used when a clinician needs to place a stent to keep a narrowed, weakened, or blocked passage open. It is used in coronary arteries, peripheral arteries, carotid arteries, bile ducts, airways, the esophagus, or other sites depending on the stent design. The system helps move the stent through the body to the target area with controlled release. The stent choice and delivery method depend on anatomy, disease type, and treatment goal.
Balloon-expandable systems use a balloon catheter to expand the stent at the target site. Self-expanding systems constrain the stent inside a sheath until it is released, allowing it to expand on its own. Some systems deliver drug-eluting stents, covered stents, vascular stents, or nonvascular stents. The delivery system must match the stent size, length, material, and intended use.
The clinician accesses the vessel or passageway and advances a guidewire to the treatment area. The stent delivery system is guided over the wire or through an endoscope, catheter, or sheath depending on the procedure. Imaging helps confirm position before the stent is deployed. After release, the delivery system is removed and the stent position, opening, and blood or fluid flow are checked.
Possible risks include bleeding, infection, vessel or tissue injury, stent movement, incomplete expansion, blockage, clotting, restenosis, perforation, or need for another procedure. Risks vary by body location and stent type. Patients may need antiplatelet medicine, imaging, endoscopy, or follow-up visits after placement. Sudden pain, shortness of breath, neurologic symptoms, bleeding, fever, or signs of blockage should be reported urgently.
No. The delivery system is removed after the stent is placed. The stent itself usually stays in the body.
A balloon-expandable stent opens when a balloon inflates inside it. A self-expanding stent opens after it is released from a restraining sheath.
No. Stent delivery systems are generally sterile, single-use devices and should be discarded after the procedure.
Yes, stent migration can happen in some cases, depending on the location and stent type. Follow-up helps check position and function.
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