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Gastrointestinal prostheses

  • US 9,044,300 B2
  • Filed: 04/03/2014
  • Issued: 06/02/2015
  • Est. Priority Date: 04/03/2009
  • Status: Active Grant
First Claim
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1. An implant for treating metabolic disorders such as diabetes and obesity, the implant having an unconstrained state comprising:

  • an anchoring element including a self-expandable structure having;

    a first portion that has a first diameter in the unconstrained state that is configured for engaging a first wall of the pylorus at a first location adjacent the pyloric antrum;

    a second portion that has a second diameter in the unconstrained state that is configured for engaging a second wall of the pylorus at a second location adjacent the duodenal bulb; and

    a neck portion located between the first portion and the second portion that is adapted to extend through and engage an inner surface of the pylorus in the unconstrained state, the neck portion in the unconstrained state having a third diameter that is less than the first diameter and less than the second diameter but equal to or larger than a maximum diameter of the pylorus, such that the neck portion does not restrict flow through the pylorus,wherein at least one of the first portion and the second portion in the unconstrained state defines an increasing diameter as it extends away from the neck portion; and

    a therapy implant adapted for placement within the duodenum, the therapy implant coupled to the anchoring element, such that the therapy implant does not penetrate into the duodenal bulb.

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