DUAL BALLOON GASTRIC RING

• US 20100217071A1
• Filed: 10/16/2008
• Published: 08/26/2010
• Est. Priority Date: 10/16/2007
• Status: Active Grant

• Current Assignee: Compagnie Europeenne D'Etude Et De Recherche De Dispositifs Pour L'Implantation Par Laparoscopie
• Original Assignee: Compagnie Europeenne D'Etude Et De Recherche De Dispositifs Pour L'Implantation Par Laparoscopie
• Inventors: Ricol, Jean-Paul
• Granted Patent: US 8,721,522 B2
• Time in Patent Office: Days
• US Class Current: 600/37
• CPC Class Codes: A61F 5/0033 with more than one chamber
• CPC Class Codes: A61F 5/005 Gastric bands
• CPC Class Codes: A61F 5/0066 Closing devices for gastric bands

Abstract

The invention relates to an implantable surgical ring (1) designed to be closed on itself to form a closed loop (2) having an extension medium axis (XX′) for tightening a biological organ (3), wherein said ring (1) includes at least a first and a second ring tightening chamber (12, 13) attached to each other designed to contain a filling fluid for tightening said biological organ (3), said first and second tightening chambers being stepped along the extension medium axis (XX′), said ring being characterised in that the first and second tightening chambers (12, 13) include between them a material-free clearance area (20), in which the wall of the biological organ (3) may move without contacting the ring (1), in order to tighten said biological organ (3) at the level of at least two axially-separated contact areas (14A, 14B).

Claims

1. Implantable surgical ring designed to be closed on itself to form a closed loop having an extension medium axis for tightening a biological organ forming a pouch or a duct in order to change the cross section of flow into said organ, said ring comprising at least a first ring tightening chamber and a second ring tightening chamber attached to each other and designed to contain a filling fluid for tightening said biological organ by said ring, said first and second tightening chambers being stepped along the extension medium axis of the loop, wherein the first and second tightening chambers include between them a material-free clearance area in which the wall of the biological organ may move without contacting the ring, in order to tighten said biological organ at the level of at least two axially separated contact areas.

2. Surgical ring according to claim 1 wherein the clearance area approximately extends over the entire perimeter of the loop so that, once the ring is implanted, the respective contact areas between the biological organ and the first and second tightening chambers are disjoined.

3. Surgical ring according to claim 1 wherein it comprises an anti-proximity element placed between the first and second tightening chamber and designed to maintain a predetermined minimum separation between the latter.

4. Surgical ring according to claim 1, wherein it comprises a flexible band whose length roughly corresponds to the perimeter of the loop and that the first and second tightening chambers are attached to said flexible band so as to have the it protrude on the inner side of the latter.

5. Surgical ring according to claim 4 wherein the clearance area comprises a recess on the inner side of the flexible band the bottom of which is set back from the first and second tightening chambers.

6. Surgical ring according to claim 3 wherein the anti-proximity element is formed by a reinforced portion of the flexible band.

7. Surgical ring according to claim 1, wherein it is equipped with axial means of adaptation designed for the axial clearance of the tightening chambers within limits predefined by construction.

8. Surgical ring according to claim 1, wherein the first and second tightening chambers extend approximately parallel to each other.

9. Surgical ring according to claim 1, wherein the first and second tightening chambers are delimited by a joint membrane designed to be in contact with the organ to tighten.

10. Surgical ring according to claim 4 wherein the joint membrane is side by side, at least for part of its length, against the inner side of the flexible band to form the clearance area.

11. Surgical ring according to claim 1, wherein the first and second tightening chambers are either in free 2-way fluidic communication, or are approximately without the means of fluidic communication between them.

12. Surgical ring according to claim 1, wherein it is equipped with a joint admission collector providing part of the fluidic communication between the first and second tightening chambers, and the communication between said tightening chambers and a device for the transfer of external fluid to the ring, of the catheter type.

13. Surgical ring according to claim 12 wherein the joint admission collector is integrated in the ring and opens in an approximately symmetrical manner on each of the first and second tightening chambers.

14. Surgical ring according to claim 1, wherein it forms a gastroplasty ring.

15. Method for the manufacture of an implantable ring designed to be closed on itself to form a closed loop having a medium extension axis for tightening a biological organ forming a pouch or a duct in order to modify the cross section of flow of the opening into said organ, said method comprising a preparation step (a) during which at least one ring tightening chamber and a second ring tightening chamber are created, each designed to contain a filling fluid, a step (b) involving stepping during which said first and second tightening chambers are mechanically connected to each other being stepped along the extension medium axis of the loop, said method characterised in that the step (b) involving stepping comprises a delimitation sub-step during which said a material-free clearance area is made between the first and second tightening chambers clearance area in which the wall of the biological organ may move without contacting the ring, so that the first and second tightening chambers tighten the biological organ at the level of at least two axially separated contact areas.

16. Method of manufacturer according to claim 15 wherein the step (b) involving stepping comprises an assembly sub-step (b1) during which the first and second tightening chambers are attached to the inner side of the same flexible band, and in that the delimitation sub-step (b2) comprises a junction phase for the formation of a recess, during which is placed, opposite the inner side of the flexible band a membrane common to the first and second tightening chambers then the portion of said joint membrane corresponding to the clearance area is brought against said flexible band so as to have it adhere to the latter.