Medical devices and methods to prevent bile reflux after bariatric procedures
First Claim
1. An endoscopic stent for implantation in portions of a patient'"'"'s esophagus, stomach, and duodenum after sleeve gastrectomy or biliopancreatic diversion with duodenal switch or biliopancreatic diversion with duodenal switch, the endoscopic stent comprising:
- a stent portion, the stent portion comprising a proximal end portion, a distal end portion, and an enlarged middle portion located between the proximal and distal end portions, wherein the proximal end portion is defined by a length of about 50 mm to about 200 mm, wherein the enlarged middle portion is defined by a length of about 20 mm to about 80 mm, and wherein the enlarged middle portion has an enlarged diameter relative to both the proximal end portion and the distal end portion; and
a polymeric cover disposed over the stent portion and extending distally beyond the distal end portion forming a polymeric sleeve portion, the polymeric sleeve portion devoid of stent material;
wherein the endoscopic stent is constructed and arranged for implantation such that the proximal end portion extends into a distal portion of the esophagus, the enlarged middle portion is disposed with a central portion of the stomach, the distal end portion terminates in the stomach, and only the polymeric sleeve portion extends into the duodenum.
1 Assignment
0 Petitions
Accused Products
Abstract
An endoscopic stent for implantation in a patient after sleeve gastrectomy or biliopancreatic diversion with duodenal switch or biliopancreatic diversion with duodenal switch comprising a stent portion, the stent portion comprising a proximal end portion, the proximal end portion defined by a length of about 50 mm to about 200 mm, an enlarged middle portion, a middle portion having an enlarged diameter relative to the proximal end portion and the distal end portion and defined by a length of about 20 mm to about 80 mm, and a distal end portion and a polymeric sleeve portion engaged to and extending distally from the distal end portion of the stent.
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Citations
16 Claims
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1. An endoscopic stent for implantation in portions of a patient'"'"'s esophagus, stomach, and duodenum after sleeve gastrectomy or biliopancreatic diversion with duodenal switch or biliopancreatic diversion with duodenal switch, the endoscopic stent comprising:
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a stent portion, the stent portion comprising a proximal end portion, a distal end portion, and an enlarged middle portion located between the proximal and distal end portions, wherein the proximal end portion is defined by a length of about 50 mm to about 200 mm, wherein the enlarged middle portion is defined by a length of about 20 mm to about 80 mm, and wherein the enlarged middle portion has an enlarged diameter relative to both the proximal end portion and the distal end portion; and a polymeric cover disposed over the stent portion and extending distally beyond the distal end portion forming a polymeric sleeve portion, the polymeric sleeve portion devoid of stent material; wherein the endoscopic stent is constructed and arranged for implantation such that the proximal end portion extends into a distal portion of the esophagus, the enlarged middle portion is disposed with a central portion of the stomach, the distal end portion terminates in the stomach, and only the polymeric sleeve portion extends into the duodenum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An endoscopic stent for implantation in a patient after sleeve gastrectomy or biliopancreatic diversion with duodenal switch, the endoscopic stent comprising:
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a stent portion, the stent portion comprising a proximal end portion, the proximal end portion defined by a length of about 100 mm to about 200 mm, an enlarged middle portion, the enlarged middle portion having an enlarged diameter and defined by a length of about 40 mm to about 80 mm, and a distal end portion, the distal end portion defined by a length of about 50 mm to about 100 mm; and wherein at least a portion of the distal end portion of the stent comprises reduced radial strength and is configured to extend across the pyloric valve and allow the pyloric valve to open and close; wherein at least a portion of the distal end portion comprises a reduced wire diameter compared to the proximal end portion and middle portion, a lower braid angle compared to the proximal end portion and middle portion, or a reduced number of wires compared to the proximal end portion and middle portion, thereby achieving the reduced radial strength. - View Dependent Claims (13, 14, 15)
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16. An endoscopic stent for implantation in a patient after sleeve gastrectomy or biliopancreatic diversion with duodenal switch, the endoscopic stent comprising:
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a stent portion, the stent portion comprising a proximal end portion, the proximal end portion defined by a length of about 100 mm to about 200 mm, an enlarged middle portion, the enlarged middle portion having an enlarged diameter and defined by a length of about 40 mm to about 80 mm, and a distal end portion, the distal end portion defined by a length of about 50 mm to about 100 mm; and an elastomeric band surrounding the distal end portion, the elastomeric band configured to apply an inward pressure to close a lumen extending through the stent porion; wherein at least a portion of the distal end portion of the stent comprises reduced radial strength and is configured to extend across the pyloric valve and allow the pyloric valve to open and close.
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Specification