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Challenge Prevention of Stent Migration
Prevention of Stent Migration
STATUS: Awarded
Active Solvers: 402
Posted: Jul 19 2013
Challenge ID: 9933370
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Medical stents are usually flexible, polymer coated metal mesh devices that enlarge and hold open natural passageways that have been occluded. There are arterial, esophageal, biliary and urethral stents as well as others. Most stents are held in place by the pressure of expanding in the passageway, but a significant number of esophageal stents can migrate towards the stomach or the mouth due to the natural peristaltic motion of the esophagus. A unique, reversible, design of anchoring the stent in place is required.


Esophageal stents tend to migrate down towards the stomach or mouth due to peristaltic motion of the esophagus. Also, successful treatments of the occlusion (like tumor shrinkage) can enlarge the passageway causing more migration. A method/technique is required to hold the stent in place. It must be easily and quickly reversible for stent removal. There have been many attempts so a solution will have to be unique. 

This is a Theoretical Challenge that requires only a written proposal to be submitted.  The Challenge award will be contingent upon theoretical evaluation of the proposal by the Seeker. 

To receive an award, Solver(s) will have to transfer to Seeker all of their Intellectual Property (IP) rights to the solution. 


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InnoCentive is the global innovation marketplace where creative minds solve some of the world's most important problems for cash awards up to $1 million. Commercial, governmental and humanitarian organizations engage with InnoCentive to solve problems that can impact humankind in areas ranging from the environment to medical advancements.

What is a Theoretical IP Transfer Challenge?

An InnoCentive Theoretical Challenge builds upon an idea but is not yet a proof of concept. A solution to a Theoretical Challenge will solidify the Solver's concept with detailed descriptions, specifications and requirements necessary to bringing a good idea closer to becoming an actual product or service.

This Challenge is a Theoretical-IP Transfer Challenge, meaning that Solvers must relinquish all rights to the Intellectual Property (IP) for which they are awarded. By contrast, Theoretical-Licensing means that the Seeker is requesting non-exclusive rights to use the winning solution. For these forms of a Theoretical Challenge, Solvers that do not win retain the rights to their solution after the evaluation period is complete. The Seeker retains no rights to any IP not awarded.

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