Device for generating an artificial constriction in the gastrointestinal tract

• US 20050283041A1
• Filed: 06/02/2004
• Published: 12/22/2005
• Est. Priority Date: 06/04/2003
• Status: Active Grant

• Current Assignee: AMI Agency For Medical Innovations GmbH
• Original Assignee: AMI Agency For Medical Innovations GmbH
• Inventors: Egle, Walter
• Granted Patent: US 7,118,526 B2
• Time in Patent Office: Days
• US Class Current: 600/37
• CPC Class Codes: A61F 5/0056 using injection ports
• CPC Class Codes: A61F 5/0066 Closing devices for gastric bands

Abstract

A device for generating an artificial constriction in the gastrointestinal tract comprises a band (1), which can be placed annularly about a particular portion of the gastrointestinal tract, and a closure device (2) for connecting the end regions of the band (1), placed annularly about the portion of the gastrointestinal tract, which, in the closed state of the closure device (2) encompasses a throughlet opening (6), the band (1) comprising a hollow chamber (14) fillable with a filling medium and extending at least over a large portion of the length of the band (1), and upon filling the hollow chamber (14) a wall (11), delimiting the throughlet opening (6) of the band (1), extends in the direction toward the axis (7) of the throughlet opening decreasing the size of the throughlet opening. The device comprises further a foamed material body (13), connected with the band (1), which adjoins the surface (12), facing away from the throughlet opening (6), of the wall (11) delimiting the throughlet opening. The foamed material body (13) is adhered to the wall (11) at least over a large portion, preferably over the entire area, of its area in contact with the wall (11).

Claims

1. Device for generating an artificial constriction in the gastrointestinal tract with

a band (1), which can be placed annularly about a particular portion of the gastrointestinal tract,

a closure device (2) for connecting the end regions of the band (1), placed annularly about the portion of the gastrointestinal tract, which, in the closed state of the closure device (2), encompasses a throughlet opening (6), the band (1) comprising a hollow chamber (14), which can be filled with a filling medium, extending at least over a large portion of the length of the band (1), and, upon filling the hollow chamber (14), a wall, delimiting the throughlet opening (6), of band (1) extends in the direction toward the axis (7) of the throughlet opening decreasing the size of the throughlet opening, and

a foamed material body (13) adjoining the surface, facing away from the throughlet opening (6) of the wall (11) delimiting the throughlet opening, and the foamed material body (13) is adhered on the wall (11) at least over a large portion of its area in contact with the wall (11).

2. Device as claimed in claim 1, in which the foamed material body (13) is comprised of silicone foam.

3. Device as claimed in claim 1, in which the wall (11) is comprised of silicone.

4. Device as claimed in claim 1, in which the band (1) on the side remote from the throughlet opening (6) comprises a back segment (9), which has a lower extensibility than the wall (11).

5. Device as claimed in claim 4, in which the hollow chamber (14) on its side remote from the throughlet opening (6) is delimited by the back segment (9).

6. Device as claimed in claim 4, in which the wall (11) and the back segment (9) are formed integrally of one piece of material.

7. Device as claimed in claim 4, in which the wall (11) and the back segment (9) and connection segments (10), optionally provided between the back segment (9) and the wall (11), together form a tube.

8. Device as claimed in claim 4, in which the extensibility of the back segment (9) is less than that of the foamed material body (13).

9. Device as claimed in claim 1, in which the surface (29), facing away from the throughlet opening (6), of the foamed material body (13) delimits the hollow chamber.

10. Device as claimed in claim 1, in which the foamed material body (13) extends over the entire length of the wall (11) delimiting the throughlet opening (6) and is adhered to it over the entire length of this wall (11).

11. Device as claimed in claim 1, in which the device comprises a connection tubule (15) whose inner channel (16) communicates with the hollow chamber (14).

12. Device as claimed in claim 1, in which the filling medium has a higher viscosity than water and is preferably silicone gel.

13. Device as claimed in claim 11, in which the connection tubule (15) is connected to a bulb (21), which comprises a first chamber (23), filled with the filling medium, and a second chamber (24), filled with a pressure medium, both chambers (23, 24) being separated from one another by an elastically extensible or a displaceable partition (22), and the chamber (24) filled with the pressure medium is connected with an injection port (19) or with a pumping device.

14. Device as claimed in claim 1, in which the area, in contact on the wall (11), of the foamed material body (13) is adhered over the entire area on the wall (11).