Device for bariatric stent allowing normal function of pyloric sphincter

A prosthetic, proximal technology in the field of devices for bariatric stents that allows the normal function of the pyloric sphincter, addressing issues such as stents prone to migration, short stents, and inappropriate shape for gastric geometry

Active Publication Date: 2018-12-11
BOSTON SCI SCIMED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these stents are prone to migration because their shape is not suitable for the altered gastric geometry after sleeve gastrectomy
Often two stents are used because existing stents are too short for successful treatment

Method used

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  • Device for bariatric stent allowing normal function of pyloric sphincter
  • Device for bariatric stent allowing normal function of pyloric sphincter
  • Device for bariatric stent allowing normal function of pyloric sphincter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Figure 5A A first embodiment of a prosthesis 10 with a single scaffold layer is shown. The prosthesis 10 has a stent 12 completely covered by a polymer covering 14 . The polymer covering 14 forms the outer surface of the prosthesis 10 . like Figure 5A The prosthesis 10 shown in may be implanted after a sleeve gastrectomy.

[0116] The stent 12 has a proximal stent flange 20 , a proximal stent segment 18 , an enlarged stent segment 16 , and a distal stent flange 24 . The proximal stent flange 20 defines the proximal end of the stent and the distal stent flange 24 defines the distal end of the stent 12 .

[0117] The proximal and distal stent flanges 20, 24 flare outwardly. The proximal end of the proximal stent flange 20 has a larger diameter than its distal end. The distal end of the distal stent flange 24 has a larger diameter than its proximal end.

[0118] The proximal stent flange 20, the proximal stent segment 18, and the enlarged stent segment 16 form the...

Embodiment 2

[0124] Figure 5B A second embodiment of a prosthesis 10 with a single scaffold layer is shown. The prosthesis 10 has a stent 12 completely covered by a polymer covering 14 . The polymer covering 14 forms the outer surface of the prosthesis 10 . like Figure 5B The prosthesis 10 shown in may be implanted after a sleeve gastrectomy.

[0125] The stent 12 has a proximal stent flange 20 , a proximal stent segment 18 , an enlarged stent segment 16 , and a distal stent flange 24 . The proximal stent flange 20 defines the proximal end of the stent and the distal stent flange 24 defines the distal end of the stent 12 .

[0126] The proximal and distal stent flanges 20, 24 flare outwardly. The proximal end of the proximal stent flange 20 has a larger diameter than its distal end. The distal end of the distal stent flange 24 has a larger diameter than its proximal end.

[0127] Proximal stent flange 20, proximal stent segment 18, and enlarged stent segment 16 form the proximal s...

Embodiment 3

[0133] A third embodiment of a prosthesis 10 with a single scaffold layer is shown in Image 6 . The prosthesis 10 has a scaffold 12 and a polymeric covering 14 . The polymer covering 14 forms the outer surface of the prosthesis 10 . like Image 6 The prosthesis 10 shown in may be implanted after a sleeve gastrectomy.

[0134] The stent 12 has a proximal stent flange 20 , a proximal stent segment 18 , a large stent segment 16 , a braided link segment 22 and a distal stent flange 24 . Image 6 Braided link 22 is shown in a partially closed / contracted state.

[0135] The proximal and distal stent flanges 20, 24 are flared outward. The proximal end of the proximal stent flange 20 has a larger diameter than its distal end. The distal end of the distal stent flange 24 has a larger diameter than its proximal end.

[0136] Stent 12 has an overall longitudinal length of about 310 mm, and proximal stent flange 20 has a length of about 30 mm and a diameter of about 30 mm at its w...

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Abstract

A prosthesis that does not interfere with the normal function of the pyloric sphincter when implanted in the gastrointestinal tract. In some cases, the prosthesis is implanted as part of or after a sleeve gastrectomy. The prosthesis includes a stent having an outer surface, and a polymer covering completely 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.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application Serial No. 62 / 052,000, filed September 18, 2014, which is hereby incorporated by reference in its entirety. Background technique [0003] Obesity is a condition in which excess body fat has accumulated to such an extent that it can adversely affect health, resulting in reduced life expectancy and / or increased health problems. Body Mass Index (BMI), a measure that compares weight to height, when a person's BMI is 25kg / m 2 and 30kg / m 2 A person is defined as overweight (pre-obese) when between and when the BMI is greater than 30kg / m 2 defined as obesity. Obesity is most commonly caused by a combination of excess dietary calories, lack of physical activity, and genetic predisposition. On average, obesity reduces life expectancy by 6 to 7 years. Obesity increases the likelihood of various diseases, especially heart disease, type 2 diabetes, breathing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/04A61F2/82A61F2/844A61F2/90A61F5/00
CPCA61F2/04A61F2/82A61F2/844A61F2/90A61F5/0036A61F5/0076A61F5/0083A61F2002/045A61F2210/0076A61F2250/0018A61F2250/0029A61F2250/0039
Inventor 约翰·A·欣斯敦克劳德·O·克拉克乔纳森·鲁特维沙尔·沙赫
Owner BOSTON SCI SCIMED INC
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