Devices and methods for placement of partitions within a hollow body organ
Devices and methods for tissue acquisition and fixation, or gastroplasty, are described. Generally, the devices of the system may be advanced in a minimally invasive manner within a patient's body, e.g., transorally, endoscopically, percutaneously, etc., to create one or several divisions or plications within the hollow body organ. Such divisions or plications can form restrictive barriers within a organ, or can be placed to form a pouch, or gastric lumen, smaller than the remaining stomach volume to essentially act as the active stomach such as the pouch resulting from a surgical Roux-En-Y gastric bypass procedure. Moreover, the system is configured such that once acquisition of the tissue by the gastroplasty device is accomplished, any manipulation of the acquired tissue is unnecessary as the device is able to automatically configure the acquired tissue into a desired configuration.
1. A gastroplasty device, comprising:
a cartridge assembly having a longitudinal axis, the cartridge assembly having a first tissue acquisition member pivotable about the longitudinal axis in relation to a second tissue acquisition member, the first tissue acquisition member including a first mating surface that faces a second mating surface of the second tissue acquisition member when the cartridge assembly is in a closed configuration, each tissue acquisition member including a tissue receiving cavity including an opening disposed in the respective first and second mating surfaces, the tissue receiving cavity being coupled to a vacuum source located opposite said opening to draw a first tissue fold into the first acquisition member cavity and a second tissue fold into the second acquisition member cavity; and
a stapler disposed on the first tissue acquisition member and the second tissue acquisition member for stapling the first tissue fold and the second tissue fold together; and
a septum removably positioned between the first tissue acquisition member and the second tissue acquisition member and between the first tissue fold and the second tissue fold.
2. The gastroplasty device of claim 1 , wherein the vacuum source of the first tissue acquisition member is actuatable separately from the vacuum source of the second tissue acquisition member.
3. The gastroplasty device of claim 1 , wherein the cartridge assembly includes an expandable element selected from the group consisting of a scope, a balloon, and a wire form.
4. The gastroplasty device of claim 1 , wherein the septum comprises a bioabsorbable material.
5. The gastroplasty device of claim 4 , wherein the bioabsorbable material is selected from the group consisting of polylactic acid (PLA), poly(lactic-co-glycolic acid) (PLGA), and polyglycolic acid (PGA).
6. The gastroplasty device of claim 1 , wherein, when the cartridge assembly is in the closed configuration, the first and second mating surfaces face the longitudinal axis of the cartridge assembly.
7. The gastroplasty device of claim 1 , wherein the first mating surface is configured to mate with the first tissue fold and the second mating surface is configured to mate with the second tissue fold.
8. The gastroplasty device of claim 1 , wherein the septum includes a longitudinal barrier and first and second transverse barrier portions.
9. The gastroplasty device of claim 8 , wherein the first and second transverse barrier portions have an arcuate shape and extend from the longitudinal barrier.