Device for generating an artificial constriction in the gastrointestinal tract

• US 20040267377A1
• Filed: 06/02/2004
• Published: 12/30/2004
• 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 7,311,717 B2
• Time in Patent Office: Days
• US Class Current: 623/23.64
• CPC Class Codes: A61B 17/12013 for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/135 inflatable for measuring blood pressure A61B5/022; inflatable pressure pads A61F5/34
• 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 (2) of the gastrointestinal tract, and, by means of a piston-cylinder unit (8), the size of the passageway opening (19) of the portion (2) of the gastrointestinal tract encompassed by the band (1) is variable, and the band (1), in the proximity of its first end (4), is connected with the cylinder (6) of the piston-cylinder unit (8). The band (1) is connected in the proximity of its second end (5) with the piston (7) of this piston-cylinder unit (8).

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 (2) of the gastrointestinal tract, and a piston-cylinder unit (8) for varying the size of the passageway opening (19) of the portion (2) of the gastrointestinal tract encompassed by the band (1), the band (1) being connected in the proximity of its first end (4) with the cylinder (6) of a piston-cylinder unit (8) and, in the proximity of its second end (5), with the piston (7) of this piston-cylinder unit (8).

2. Device as claimed in claim 1, in which the position of the piston (7) is variable relative to the cylinder (6) of the piston-cylinder unit (8) by means of a hydraulic actuation unit (17) connected with the piston-cylinder unit.

3. Device as claimed in claim 2, the hydraulic actuation unit (17) being an injection port (17) connected via a tubule (14) with the cylinder chamber (16) of the piston-cylinder unit (8).

4. Device as claimed in claim 1, in which on the piston (7) a piston rod (9) is disposed, via which the piston (7) is connected with the band (1) in the proximity of its second end (5).

5. Device as claimed in claim 1, in which, for the connection of the band (1) with the cylinder (6) of the piston-cylinder unit (8) or for the connection of the band (1) with the piston (7) of the piston-cylinder unit, a closure is provided, which can be closed, after the band has been placed with the closure open about the particular portion (2) of the gastrointestinal tract.

6. Device as claimed in claim 5, in which, for the connection of the band (1) in the proximity of its second end (5) with the piston (7) or the piston rod (9) disposed on the piston (7), a first closure member (10) is disposed on the piston (7) or on the piston rod (9), which can be connected with a second closure member (11) disposed on the band (1) in the proximity of the second end (5) of the band (1).

7. Device as claimed in claim 6, in which the cylinder (6) of the piston-cylinder unit (8) is nondetachably connected with the band (1) in the proximity of its first end (4).

8. Device as claimed in claim 5, in which for the connection of the band (1) in the proximity of its first end (4) with the cylinder (6) a first closure member is disposed on the cylinder (6), which is connectable with a second closure member disposed on the band (1) in the proximity of the first end (4) of the band (1).

9. Device as claimed in claim 8, the piston (7) being nondetachably connected with the band (1) in the proximity of its second end (5).

10. Device as claimed in claim 1, the band (1) being comprised at least substantially of silicone.

11. Device as claimed in claim 5, in which with both closure members (10, 11) connected with one another, segments of the band (1), adjoining both ends (4, 5) of the band (1), overlap when viewed in the circumferential direction, the band (1) forming a closed ring viewed in side view.

12. Device as claimed in claim 11, in which at one end (5) of the band a recess is developed, extending starting at the end (5) of the band in the circumferential direction of the band (1), into which projects a segment of the band (1) adjoining the other end (4) of the band (1).

13. Device as claimed in claim 1, in which at least in the proximity of one of the ends (4, 5) of the band (1) a projecting segment (13, 21) is provided extending in the direction toward the corresponding end (4, 5) starting at the connection site of the cylinder (6) on the band (1) or starting at the connection site of the piston (7) on the band (1).