METHODS AND DEVICES FOR INTRAGASTRIC SUPPORT OF FUNCTIONAL OR PROSTHETIC GASTROINTESTINAL DEVICES

• US 20090012553A1
• Filed: 06/09/2008
• Published: 01/08/2009
• Est. Priority Date: 06/08/2007
• Status: Active Grant

• Current Assignee: ValenTx, Inc.
• Original Assignee: ValenTx, Inc.
• Inventors: von Hoffmann, Gerard, Wright, James, Dann, Mitchell, Fluet, Greg, Swain, Christopher Paul, Hancock, John
• Granted Patent: US 8,182,441 B2
• Time in Patent Office: Days
• US Class Current: 606/191
• CPC Class Codes: A61F 5/0076 preventing normal digestion, e.g. Bariatric or gastric sleeves
• CPC Class Codes: A61J 15/0003 Nasal or oral feeding-tubes, e.g. tube entering body through nose or mouth
• CPC Class Codes: A61J 15/003 Means for fixing the tube inside the body, e.g. balloons, retaining means holding devices holding in the body A61M25/04
• CPC Class Codes: A61J 15/0049 Inflatable Balloons balloon catheters A61M25/10
• CPC Class Codes: A61J 15/0069 Tubes feeding directly to the intestines, e.g. to the jejunum
• CPC Class Codes: A61J 15/0084 for sensing parameters related to the patient
• CPC Class Codes: A61M 31/00 Devices for introducing or retaining media, e.g. remedies, in cavities of the body A61M25/00 takes precedence ; introducing or retaining ophthalmic products into the ocular cavities A61F9/0008

Abstract

Disclosed herein are systems and methods for attaching or maintaining the position of a therapeutic or diagnostic device in a body lumen, such as the GI tract without necessarily requiring any penetrating attachments through any body walls. The system can include at least two elements: a proximal orientation element and a distal support element. The proximal orientation element can be configured to reside at least partially within the esophageal lumen and the distal support element can be configured to reside in the stomach, such as along the greater curve of the stomach. An intragastric support system can have a first configuration in which the long axis of the proximal orientation element is substantially parallel and/or substantially coaxial with the long axis of the distal support element, and a second configuration in which the long axis of the proximal orientation element is not substantially coaxial with the long axis of the distal support element. The second configuration can thus advantageously retain the intragastric support system in place and prevent unwanted proximal migration of the distal support element into the esophagus or distal migration into the intestine.

Claims

1. An intragastric support system comprising:

A proximal orientation element having a proximal end and a distal end, wherein the proximal orientation element has a diameter sized to fit within the lumen of an esophagus;

wherein the long axis of the proximal orientation element is configured to be substantially parallel with the long axis of the esophagus; and

A distal support element configured to reside against the greater curvature of the stomach;

wherein the distal support element is transformable from a first configuration where a long axis of the distal support element is configured to be substantially parallel with the long axis of the proximal orientation element during delivery to a second configuration where the long axis of the distal support element is configured to be not substantially parallel with the long axis of the proximal orientation element when implanted in the body.

2. The intragastric support system of claim 1, wherein the proximal orientation element further comprises a food-collecting ring.

3. The intragastric support system of claim 2, wherein the food-collecting ring comprises a proximal tapered portion and a distal cylindrical portion.

4. The intragastric support system of claim 3, wherein the proximal tapered portion of the food-collecting ring comprises a first shoulder and a second shoulder, wherein the second shoulder is longitudinally offset from the first shoulder.

5. The intragastric support system of claim 1, further comprising a joint configured to pivotably couple the proximal orientation element to the distal support element.

6. The intragastric support system of claim 5, wherein the joint comprises a ball-and-socket joint.

7. The intragastric support system of claim 5, wherein the joint comprises a hinged joint.

8. The intragastric support system of claim 1, further comprising a gastrointestinal bypass sleeve.

9. The intragastric support system of claim 2, wherein the gastrointestinal bypass sleeve is attached to the food-collecting ring.

10. The intragastric support system of claim 1, wherein the distal support element comprises an enlarged distal end to retain the distal support element within the stomach.

11. The intragastric support system of claim 1, wherein the distal support element comprises a drug reservoir.

12. The intragastric support system of claim 1, wherein the proximal orientation element comprises a rounded proximal head to prevent esophageal trauma.

13. The intragastric support system of claim 1, wherein the proximal orientation element has a variable-length cross section.

14. The intragastric support system of claim 1, wherein the proximal orientation element comprises a plurality of strut members.

15. The intragastric support system of claim 1, wherein the distal support element is transformable between a first reduced configuration and a second expanded configuration.

16. The intragastric support system of claim 2, further comprising a restrictive element operably connected to the food-collecting ring.

17. The intragastric support system of claim 2, further comprising an obstructive element operably connected to the food-collecting ring.

18. A method for treating a patient, comprising:

providing an intragastric support system, the system comprising a proximal orientation element having a proximal end and a distal end, and a distal support element;

inserting the proximal orientation element and the distal support element into a gastrointestinal tract lumen, wherein a long axis of the proximal orientation element is substantially parallel to a long axis of the distal support element;

positioning the system such that at least a portion of the proximal orientation element is within the esophagus of a patient and the distal support element is within the stomach of a patient; and

transforming the distal support element such that the long axis of the distal support element is not substantially parallel to the long axis of the proximal orientation element.

19. The method of claim 18, wherein transforming the distal support element is such that the long axis of the distal support element is substantially perpendicular to the long axis of the proximal orientation element.

20. The method of claim 18, wherein the intragastric support system further comprises a joint configured to pivotably couple the distal support element to the proximal orientation element, the joint having a locked state to prevent movement of the distal support element with respect to the proximal orientation element.

21. The method of claim 20, further comprising the step of:

locking the joint at a position wherein a long axis of the proximal orientation element is at least substantially coaxial with a long axis of the distal support element during delivery; and

unlocking the joint to allow the distal support element to pivot within a range of motion with respect to the proximal orientation element when the distal support element is implanted in the stomach.