STOMACH PERISTALSIS DEVICE AND METHOD

• US 20110196504A1
• Filed: 04/15/2011
• Published: 08/11/2011
• Est. Priority Date: 12/23/2002
• Status: Active Grant

• Current Assignee: Python Medical, Inc.
• Original Assignee: Python Medical, Inc.
• Inventors: Imran, Mir A.
• Granted Patent: US 8,574,310 B2
• Time in Patent Office: Days
• US Class Current: 623/23.64
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2/482 Electrical means
• CPC Class Codes: A61F 2002/045 Stomach, intestines
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61F 5/003 inflatable
• CPC Class Codes: A61F 5/0033 with more than one chamber
• CPC Class Codes: A61F 5/0053 remotely adjustable
• CPC Class Codes: A61F 5/0079 Pyloric or esophageal obstructions

Abstract

The invention relates to an implantable stomach prosthesis for surgically replacing or augmenting all or part of the antrum and/or pylorus of a stomach. The prosthesis controls the passage of food from the stomach to the small intestine. The prosthesis may be configured to churn ingested material and release it from the stomach through a prosthetic pyloric valve. At least one expandable member is arranged to be expanded to control the passage of food and/or to mimic the churning action of a patient'"'"'s stomach. The prosthesis includes an outer support structure, a flexible inner member forming a conduit for the movement of material, and at least one expandable member located between the outer support structure and inner member. An implantable pump system is provided for inflating and deflating the expandable member(s).

Claims

1. An implantable prosthetic pyloric valve for moving ingested materials through a portion of the digestive tract, the prosthetic pyloric valve comprising:

an outer support structure;

at least one expandable member located within the outer support structure; and

a flexible inner member forming a conduit for the movement of the ingested material therethrough, the flexible inner member located within the outer support structure, wherein the at least one expandable member is located between the inner member and the outer support structure.

2. The implantable prosthetic pyloric valve of claim 1, wherein the at least one expandable member is inflatable and deflatable, and wherein the prosthetic pyloric valve further comprises:

an orad end portion, an aborad end portion, a sensor located at the aborad end portion arranged to sense pressure in the duodenum, and

a controller configured to receive a signal from the sensor corresponding to a sensed pressure in the duodenum and to generate a control signal responsive to the sensed pressure to control the inflation/deflation of the at least one expandable member.

3. The implantable prosthetic pyloric valve of claim 2, wherein the prosthetic pyloric valve further comprises:

an orad end portion, an aborad end portion, and a sensor located at the orad end portion arranged to sense pressure in the stomach; and

a controller configured to receive a signal from the sensor corresponding to a sensed pressure in the stomach and to generate a control signal responsive to the sensed pressure to control the inflation/deflation of the at least one expandable member.

4. The implantable prosthetic pyloric valve of claim 1, further comprising:

a pump system comprising a pump;

an input port coupled to the pump and the at least one expandable member; and

wherein the pump is configured to pump an inflation medium into the at least one expandable member through a corresponding input port to expand the at least one expandable member.

5. The implantable prosthetic pyloric valve of claim 4, wherein the pump system is implantable.

6. The implantable prosthetic pyloric valve of claim 4, further comprising a controller operatively coupled to the pump system and configured to control inflation and deflation of the at least one expandable member.

7. The implantable prosthetic pyloric valve of claim 1, wherein the pyloric valve is configured to replace a recipient'"'"'s natural pylorus.

8. The implantable prosthetic pyloric valve of claim 1, wherein the outer support structure is configured to be attached to the inner wall of the duodenum.

9. The implantable prosthetic pyloric valve of claim 1 wherein the at least one expandable member comprises a plurality of expandable members.

10. An implantable prosthetic stomach comprising:

an outer support structure;

at least one expandable member located within the outer support structure; and

a flexible inner member forming a cavity for the churning of ingested material therein, the flexible inner member located within the outer support structure, wherein the at least one expandable member is located between the inner member and the outer support structure.

11. The implantable prosthetic stomach of claim 10, wherein the implantable prosthetic stomach further comprises:

an antrum portion having an orad end portion for receiving ingested materials and an aborad end portion configured coupled to be coupled to a recipient'"'"'s pylorus, the antrum portion including a plurality of expandable members located between the outer support structure and the inner member, the expandable members configured to expand and contract in a sequence to churn the ingested material.

12. The implantable prosthetic stomach of claim 11, further comprising a controller configured to control expansion and deflation of the expandable members according to the sequence.

13. The implantable prosthetic stomach of claim 11, wherein the recipient'"'"'s pylorus comprises a prosthetic pyloric valve comprising at least one expandable member located between the outer support member and the inner member;

and wherein the at least one expandable member is configured to be inflated to tighten the pyloric valve and deflated to relax the pyloric valve.

14. The implantable prosthetic stomach of claim 11, further comprising:

an implantable pump system including a pump; and

an input port coupled to the pump and the expandable member;

wherein the implantable pump system is configured to pump an inflation medium into each of the expandable members through a corresponding input port to expand the at least one expandable member.

15. The implantable prosthetic organ of claim 14, further comprising a controller operatively coupled to the pump system and configured to control inflation and deflation of the at least one expandable member.

16. The implantable prosthetic organ of claim 13, wherein the prosthetic pyloric valve further comprises:

an orad end portion,

an aborad end portion,

a sensor located at the aborad end portion arranged to sense pressure in the duodenum; and

a controller configured to receive a signal from the sensor corresponding to a sensed pressure in the duodenum and to generate a control signal responsive to the sensed pressure to control the inflation and deflation of the at least one expandable member.

17. The implantable prosthetic organ of claim 13 wherein the prosthetic pyloric valve further comprises

an orad end portion,

an aborad end portion,

a sensor located at the orad end portion and arranged to sense pressure in the stomach;

and

a controller configured to receive a signal from the sensor corresponding to a sensed pressure in the stomach and to generate a control signal responsive to the sensed pressure to control the inflation and deflation of the at least one expandable member.

18. An implantable prosthetic digestive organ for moving materials through a portion of the digestive tract, the implantable prosthetic digestive organ comprising:

a prosthetic pyloric valve means for controlling the passage of material between a stomach and small intestine of a recipient;

an outer support means for supporting the prosthetic digestive organ;

expandable means for controlling the tightening and relaxing of the valve means; and

a flexible inner member means for providing a conduit for the movement of ingested material therethrough, the flexible inner member means located within the outer member; and

wherein the expandable means is located between the inner member means and the outer support means.

19. The implantable prosthetic digestive organ of claim 18, further comprising:

sensor means for sensing a pressure in the duodenum; and

controller means for receiving a signal from the sensor means corresponding to a sensed pressure in the duodenum and generating a control signal responsive to the sensed pressure to control the inflation/deflation of the expandable means.

20. The implantable prosthetic digestive organ of claim 18, further comprising:

sensor means for sensing a pressure in the stomach; and

controller means for receiving a signal from the sensor means corresponding to a sensed pressure in the duodenum and generating a control signal responsive to the sensed pressure to control the inflation/deflation of the expandable means.

21. The implantable prosthetic organ of claim 18 further comprising a pumping means for pumping an inflation medium into the expandable means through a to expand the expandable means.

22. The implantable prosthetic organ of claim 18, wherein the prosthetic pyloric valve means is a means for replacing a recipient'"'"'s natural pylorus.

23. The implantable prosthetic organ of claim 18, wherein the prosthetic pyloric valve means is a means for augmenting a recipient'"'"'s natural pylorus to further control the passage of food from the stomach into the small intestine of the recipient.