Methods allowing pyloric sphincter to normally function for bariatric stents
AssigneeBoston Scientific Scimed, Inc.
InventorsJohn A. Hingston, Claude O. Clerc, Jonathan Root, Vishal Shah
Life of this patent
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Abstract
A prosthesis that when implanted in the gastrointestinal tract does not impede the normal function of the pyloric sphincter. In some instances, the prosthesis is implanted as part of, or after, a sleeve gastrectomy procedure. The prosthesis includes a stent with an outer surface and a polymeric cover fully covering the outer surface of the stent. The stent includes a proximal stent flange; a proximal stent segment extending distally from the proximal stent flange; and an enlarged stent segment extending distally from the proximal stent segment.
Claims19
A prosthesis comprising:
- a stent with an outer surface, the stent comprising:
- a proximal stent flange;
- a proximal stent segment extending distally from the proximal stent flange;
- an enlarged stent segment extending distally from the proximal stent segment;
- a polymeric cover fully covering the outer surface of the stent, the polymeric cover forming an outer surface of the prosthesis;
- and
- a connecting segment formed by a tubular section of the polymeric cover extending distally from the enlarged stent segment, the connecting segment consisting of the polymeric cover.
A proximal bariatric prosthesis comprising a single stent layer forming an inner layer of the bariatric prosthesis and a polymeric cover forming an outer layer of the bariatric prosthesis,
- the single stent layer comprising:
- a proximal stent flange, the proximal stent flange forming a proximal end of the bariatric prosthesis;
- a distal stent flange, the distal stent flange forming a distal end of the bariatric prosthesis;
- a proximal cylindrical stent segment extending distally from the proximal stent flange;
- an enlarged stent segment extending distally from the proximal cylindrical stent segment;
- and
- a connecting segment extending distally from the enlarged stent segment to the distal stent flange, the connecting segment consisting of the polymeric cover;
- wherein the polymeric cover is attached to an outer surface of the single stent layer.
A bariatric prosthesis comprising a single stent layer and a polymeric cover,
- the single stent layer comprising:
- a proximal stent, the proximal stent consisting of:
- a proximal stent flange having a variable diameter;
- a proximal cylindrical stent segment extending distally from the proximal stent flange, the proximal cylindrical stent segment having a uniform diameter;
- and
- an enlarged stent segment extending distally from the proximal cylindrical stent segment, the enlarged stent segment having a variable diameter;
- and
- a distal stent consisting of a distal stent flange having a variable diameter, a proximal end of the distal stent spaced apart from a distal end of the proximal stent to define a gap therebetween;
- wherein the polymeric cover is attached to an outer surface of the proximal stent;
- is attached to an outer surface of the distal stent;
- and interconnects the proximal and distal stents and spans the gap between the proximal end of the distal stent and the distal end of the proximal stent.
Dependencies are inferred from the claim text.