Cobalt Chromium Stent
Cobalt Chromium Stent - Related Videos
11:46
Synthesis of an Oxygen-Carrying Cobalt(II) Complex
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2023
Source: Deepika Das, Tamara M. Powers, Department of Chemistry, Texas A&M University Bioinorganic chemistry is the field of study that investigates the role that metals play in biology. Approximately half of all proteins contain metals and it is estimated that up to one third of all proteins rely on metal-containing active sites to function. Proteins that feature metals, called metalloproteins, play a vital role in a variety of cell functions that are necessary for life. Metalloproteins...
06:55
Fabrication of Small Caliber Stent-grafts Using Electrospinning and Balloon Expandable Bare Metal Stents
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Cited by 10 •
2016
In the protocol, we present a method to manufacture a small caliber stent-graft by sandwiching a balloon expandable stent between two electrospun nanofibrous polyurethane layers.
11:48
Assay for Cell Death: Chromium Release Assay of Cytotoxic Ability
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2023
Source: Frances V. Sjaastad1,2, Whitney Swanson2,3, and Thomas S. Griffith1,2,3,4 1 Microbiology, Immunology, and Cancer Biology Graduate Program, University of Minnesota, Minneapolis, MN 55455 2 Center for Immunology, University of Minnesota, Minneapolis, MN 55455 3 Department of Urology, University of Minnesota, Minneapolis, MN 55455 4 Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 One of the main functions of the cells of the immune system is to remove target cells...
08:28
Monitoring the Wall Mechanics During Stent Deployment in a Vessel
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2012
Stent-induced arterial strain distributions are characterized using an optical surface strain measurement system. This visualization technique is used to gain insights into the impact of stent implantation on the host vessel.
10:09
Application of Simplified Stent-bridging Pancreaticogastrostomy in Open Pancreaticoduodenectomy
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2026
Here, we present the stent-bridging pancreaticogastrostomy (PG) technique, which uses a stent to bridge the remnant pancreas to the stomach during open pancreaticoduodenectomy. The stent-bridging PG aims to simplify the anastomosis, achieve complete diversion of pancreatic juice, and minimize manipulation of the pancreatic remnant.
FAQs
Cobalt-chromium alloy contributes high strength and radiopacity, allowing engineers to use thin struts while retaining resistance to vessel recoil. High strength supports mechanical scaffolding after expansion, whereas radiopacity makes the device visible during fluoroscopic positioning. These linked properties show why alloy selection affects both structural performance and the clinician’s ability to place the implant accurately.
Mesh geometry determines how expansion loads are distributed and how the device contacts the vessel wall. Strut dimensions and arrangement must work with radial strength to counter recoil without losing the benefits of a thin-strut design. In bioengineering, geometry therefore becomes a design variable alongside alloy choice, because mechanical support and vessel interaction are evaluated together.
Some designs add drug release to the mechanical support provided by the implant. The released drug is intended to limit tissue regrowth, addressing a biological response that can affect the treated artery after placement. This combination illustrates how stent engineering integrates material structure, vascular mechanics, surface or device design, and localized therapeutic delivery.
During placement, a balloon expands the stent against the vessel wall so the implant can provide continuing support. Fluoroscopy helps position the radiopaque device while it is deployed. The procedure therefore depends on coordinated mechanical expansion and imaging: the balloon establishes contact with the artery, while radiopacity supports visualization of the intended location.
Evaluation considers both immediate mechanical behavior and longer-term biological compatibility. Key concerns include successful deployment, resistance to fatigue, vessel healing, restenosis, and compatibility with surrounding tissue. Together, these measures reveal whether the device maintains support over time while allowing an appropriate vascular response, rather than judging performance solely by its initial expansion.
These devices demonstrate how several engineering decisions must operate together in a clinical implant. Alloy properties contribute strength and visibility, geometry shapes mechanical support, deployment determines placement, and drug release can address tissue regrowth. Their evaluation links device design with vascular healing, restenosis, fatigue resistance, and long-term tissue compatibility, making them a focused example of integrated bioengineering.