Devices, systems, and methods for pyloric occlusion
According to exemplary embodiments of the present disclosure, devices, systems, and methods for pyloric occlusion in an endoscopic procedure may include a first flange and a second flange connected to the first flange by a saddle region having a lumen. The second flange may be proximal to the first flange. The pyloric occlusion device may further include a closure element. The closure element may be configured to occlude a flow of material through the lumen, including across the pylorus when deployed. The closure element may be a closure of the lumen by rotation of one of the first or second flanges about the saddle region relative to the other of the first or second flange.
1. A pyloric occlusion device for deployment in an endoscopic procedure, comprising:
a first flange configured to anchor the device with respect to a duodenum wall;
a second flange configured to anchor the device with respect to a gastric wall and connected to the first flange by a saddle region having a lumen, the second flange being proximal to the first flange; and
a closure, wherein the closure is configured to fully occlude a flow of material through the lumen upon deployment of the device.
2. The pyloric occlusion device according to claim 1 , wherein the closure is a closure of the lumen by rotation of one of the first or second flange relative to the other of the first or second flange, or by rotation of the first and second flange opposite of each other.
3. The pyloric occlusion device according to claim 1 , wherein the closure is any of the following:
a swaged pin disposed proximal to the second flange;
a fastener;
a plug to fill the lumen; or
a filter, the filter including one or more hooks extending from the saddle region.
4. The pyloric occlusion device according to claim 1 , wherein the first flange includes a bulb and the second flange includes a duodenal extension.
5. The pyloric occlusion device according to claim 1 , wherein a first diameter of the first flange is equal to a second diameter of the second flange.
6. The pyloric occlusion device according to claim 1 , wherein a first diameter of the first flange is different from a second diameter of the second flange.
7. The pyloric occlusion device according to claim 1 , further comprising one or more mechanical fasteners disposed around the second flange for anchoring the second flange to tissue.
8. The pyloric occlusion device according to claim 1 , wherein a covering is disposed on a least a portion of the first flange, second flange, or lumen, or combinations thereof, for preventing tissue ingrowth.
9. The pyloric occlusion device according to claim 8 , wherein the covering comprises a membrane, sleeve, or coating, or combinations thereof.
10. The pyloric occlusion device according to claim 1 , wherein the pyloric occlusion is deployable across a pylorus with the saddle region bridging the pylorus, the first flange anchored against a duodenum side of the pylorus, the second flange anchored against a gastric side of the pylorus, and the closure operable to fully occlude the flow of material through the pylorus.
11. The pyloric occlusion device according to claim 10 , wherein the pyloric occlusion device is removable to allow flow of material through a pylorus.
12. A system for delivering an occlusion device to a pylorus in an endoscopic procedure, the system comprising:
a delivery device including an inner member having a guidewire and a retractable outer sheath, the inner member and the outer sheath being operable to constrain the occlusion device therebetween prior to deployment;
wherein the occlusion device includes:
a first flange;
a second flange connected to the first flange by a saddle region having a lumen, the second flange being proximal to the first flange; and
a closure, wherein the closure is configured to fully occlude a flow of material through the lumen upon deployment of the device across the pylorus.
13. The system according to claim 12 , wherein the closure is a closure of the lumen by rotation of one of the first or second flange relative to the other of the first or second flange, or by rotation of the first and second flange opposite each other.
14. The system according to claim 12 , wherein the closure is any of the following:
a swaged pin disposed proximal to the second flange;
a fastener;
a plug to fill the lumen; or
a filter, the filter including one or more hooks extending from the saddle region.
15. The system according to claim 12 , wherein the pyloric occlusion is deployable across a pylorus with the saddle region bridging the pylorus, one of the first flange or the second flange being anchored against a duodenum side of the pylorus, the other of the first flange or the second flange anchored against a gastric side of the pylorus, and the closure operable to fully occlude the flow of material through the pylorus.
16. A method for delivering an occlusion device to a pylorus in an endoscopic procedure, the method comprising:
inserting an endoscope in a stomach of patient;
deploying a delivery device through the endoscope to a position proximal to the pylorus for delivering the occlusion device across the pylorus, the delivery device including a sheath for holding the occlusion device in a constrained configuration;
extending the delivery device at least partially through gastric tissue through the pylorus; and
retracting the sheath to deploy a first flange on a duodenal side of the pylorus, and retracting the sheath further to deploy a second flange on a gastric side of the pylorus, wherein the first flange and the second flange are connected by a saddle region having a lumen;
wherein the occlusion device includes a closure operable to fully occlude a flow of material through the pylorus upon deployment of the device across the pylorus.
17. The method according to claim 16 , further comprising removing the occlusion device from the pylorus.
18. The method according to claim 16 , wherein the closure is any of the following:
a closure of the lumen by rotation of one of the first or second flanges relative to the other of the first or second flange;
a swaged pin disposed proximal to the second flange;
a fastener;
a plug disposed in the lumen; or
a filter, the filter including one or more hooks extending from saddle region.
19. The method according to claim 16 , wherein the first flange includes a bulb and the second flange includes a duodenal extension.
20. The method according to claim 16 , further comprising one or more mechanical fasteners disposed around the second flange for anchoring the second flange in tissue.