Stomach simulating device
Provided are stomach simulating devices and methods for simulating a stomach. Stomach simulating devices can comprise a bag-shaped conduit, a mechanical constrictor, and a valve. The conduit can have a body portion, a first diameter at an inlet portion, and a second diameter at an outlet portion, wherein the first diameter at the inlet portion is greater than the second diameter at the outlet portion, the body portion is located between the inlet portion and the outlet portion, and at least a portion of the conduit is curved in a direction from the inlet portion the outlet portion. The mechanical constrictor can he configured to constrict at least a portion of the body portion of the conduit. The valve can be configured to at least partially close a portion of the conduit closer to the outlet portion than the inlet portion of the conduit.
1. A stomach simulating device comprising:
a conduit having a body portion, a first inner diameter, and a second inner diameter, and an outer diameter, wherein the first inner diameter is larger than the second inner diameter, and wherein the conduit comprises a plurality of circumferential channels along an exterior surface; and
a plurality of cable constrictors, wherein each cable constrictor of the plurality of cable constrictors is configured to constrict a portion of the body portion of the conduit.
2. The stomach simulating device of claim 1 , wherein an exterior surface of the conduit is cylindrical.
3. The stomach simulating device of claim 1 , wherein the conduit comprises silicone.
4. The stomach simulating device of claim 1 , wherein an opening of the conduit comprises a diameter of 30-60 mm.
5. The stomach simulating device of claim 1 , wherein the conduit comprises a minimum diameter in an unconstricted conduit of 15-30 mm.
6. The stomach simulating device of claim 1 , wherein the conduit comprises a wall thickness of 1-15 mm.
7. The stomach simulating device of claim 1 , wherein a first cable constrictor of the plurality of cable constrictors wraps around an exterior circumference of the conduit.
8. The stomach simulating device of claim 7 , wherein the first cable constrictor is positioned within a first circumferential channel.
9. The stomach simulating device of claim 1 , wherein the plurality of cable constrictors is bonded to the stomach bag conduit with silicone.
10. The stomach simulating device of claim 1 , wherein the plurality of cable constrictors comprises 10-20 cable constrictors.
11. The stomach simulating device of claim 1 , wherein the conduit comprises a first silicone of durometer 00-30 and a second silicone of durometer 18A as measured using ASTM D2240.
12. The stomach simulating device of claim 1 , wherein each cable constrictor of the plurality of cable constrictors comprises a looped steel wire wrapped with a polyester rope, and each cable constrictor is configured to concentrically constrict a portion of the body portion of the conduit when a circumference of the steel wire decreases.
13. The stomach simulating device of claim 1 , wherein each cable constrictor is configured to concentrically constrict the conduit when one or more ends of a looped steel wire are pulled to decrease a circumference of the looped steel wire.
14. The stomach simulating device of claim 1 , wherein constriction of each cable constrictor of the plurality of cable constrictors is coordinated.
15. The stomach simulating device of claim 1 , wherein the conduit is configured to rotate from a horizontal position to a vertical position, and from the vertical position to the horizontal position.
16. The stomach simulating device of claim 1 , wherein a lubricant is applied to an interior surface of the conduit.
17. A stomach simulating device comprising:
a conduit having a body portion, a first inner diameter, and a second inner diameter, and an outer diameter, wherein the first inner diameter is larger than the second inner diameter; and
a plurality of cable constrictors, wherein each cable constrictor of the plurality of cable constrictors is configured to constrict a portion of the body portion of the conduit, wherein a first cable constrictor of the plurality of cable constrictors wraps around an exterior surface of the conduit, wherein the first cable constrictor is positioned within a first circumferential channel.
18. The stomach simulating device of claim 17 , wherein the conduit comprises a plurality of circumferential channels along an exterior surface.
19. The stomach simulating device of claim 17 , wherein each cable constrictor of the plurality of cable constrictors comprises a looped steel wire wrapped with a polyester rope, and each cable constrictor is configured to concentrically constrict a portion of the body portion of the conduit when a circumference of the looped steel wire decreases.
20. The stomach simulating device of claim 17 , wherein constriction of each cable constrictor of the plurality of cable constrictors is coordinated.