Stents are tubular device used for insertion in lumen such as esophagus, colon or blood vessel. Stents are safe and effective alternative to surgery or repetitive endoscopic procedures. Gastrointestinal stents are used to open bile ducts, esophagus, small bowel, and colon when blocked by large, cancerous tissue growth. Stents can be removable or permanently implantable based on the material used. The role of stenting is decreasing patients’ digestive tract obstruction. Moreover, advancement in technology has led to improvement in stent performance and reduced stent-induced complications to improve quality of life and this is expected to propel the gastrointestinal stent market growth.
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Gastrointestinal Stents Market – Market Dynamics
Growth of the global gastrointestinal stents market is expected to be fuelled by increasing product launches with novel technology by key players in the market. For instance, in 2013, Cook Medical Inc. received U.S. Food and Drug Administration (FDA) for biliary stent, adding to the line of controlled-release gastrointestinal tract. Moreover, Evolution biliary stent incorporates patency design, to prevent migration of stent after its insertion. Furthermore, in 2012, Boston Scientific Corporation launched WallFlex, biliary Transhepatic Stent System for the treatment of benign biliary strictures. Companies are focusing on manufacturing stents with biodegradable material to eliminate stent removal procedures. However, implantable products are subjected to stringent regulations, and this is expected to hinder growth of the gastrointestinal stent market. Moreover, complication associated with gastrointestinal stent implantation is also expected to be major factor leading to low adoption of these device.
Increasing prevalence of myopia and high myopia around the world is the major factor driving the orthokeratology market growth. Myopia is the most common cause of correctable visual impairment among adults and children and is a leading cause of preventable blindness in emerging economies. According to a 2016, study published in National Center for Biotechnology Information (NCBI), myopia affects 1.89 billion people worldwide and it is projected to affect 2.56 billion people by 2020. Furthermore, myopia and high myopia will affect 52% (4,949 million) and 10.0% (925 million), respectively, of the world’s population by 2050.
Orthokeratology has become one of the most popular choices among children for refractive correction. However, with increasing adoption of Ortho-K worldwide, potential complications associated with the treatment have become a significant concern. Potential complications associated with Ortho-K include microbial keratitis, lens binding, and corneal staining. Microbial keratitis remains as the most serious and sight-threatening complication of Ortho-K. Moreover, increasing visibility of fibrillary lines, epithelial pigment deposit, and transient changes of corneal biomechanical properties are other clinically insignificant side effects of orthokeratology lens.
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