Flexible transoral endoscopic gastroesophageal flap valve restoration device and method
A transoral gastroesophageal flap valve restoration device has sufficient flexibility and dimension to be passed through the mouth, throat, and esophagus of a patient into the patient's stomach. The device includes a first member and a second member hingedly coupled to the first member. The first and second members are configured to flex in a direction to follow the esophageal path into the stomach and to be substantially rigid when forming the restored gastroesophageal flap valve.
1. A transoral gastroesophageal flap valve restoration device comprising:
a first member; and
a second member consisting of a single elongated structure being hingedly coupled to the first member, the first and second members being arranged for esophageal passage into a stomach to receive stomach tissue there between to form a flap of a gastroesophageal flap valve,
the second member having an arcuate configuration comprising a concave side and a convex side, the second member being substantially rigid with respect to forces applied against the concave side, and the second member being substantially flexible with respect to forces applied in a direction opposite the concave side; and
the first and second members being configured to flex in a direction to follow an esophageal path into the stomach and to be substantially rigid when receiving the stomach tissue there between and forming the flap of the gastroesophageal flap valve.
2. The device of claim 1 wherein the first member includes a compression assembly that selectively renders the first member substantially rigid.
3. The device of claim 1 wherein each of the first and second members has a length greater than three centimeters.
4. The device of claim 1 wherein each of the first and second members has a length between three and five centimeters.
5. The device of claim 1 wherein the first and second members are arranged to be substantially in line with each other when in the esophageal path.
6. The device of claim 1 wherein the second member has an arcuate cross section.
7. The device of claim 1 wherein one of the first and second members has a longitudinal dimension and wherein the one of the first and second members includes a plurality of slots substantially transverse to the longitudinal dimension of the one of the first and second members.
8. The device of claim 7 further comprising a flexible sheath overlying at least the one of the first and second members.
9. The device of claim 7 further comprising a flexible filler material within the slots.
10. The device of claim 9 wherein the filler material has a lower duro meter than the one of the first and second members.
11. The device of claim 7 wherein the plurality of slots comprises a first set of slots and a second set of slots, the first and second sets of slots being juxtaposed, and the slots of the first set of slots being wider than the slots of the second set of slots.