Self-inflating intragastric volume-occupying device
First Claim
1. A self-inflating intragastric medical device comprising:
- 1) an uninflated, ingestible, substantially liquid-impermeable balloon having an exterior surface and an interior surface, the interior surface bounding a lumen;
2) an emissive substance enclosed within the balloon, wherein the emissive substance is a substance that liberates gas when contacted with a reactants;
3) a vessel enclosed within the balloon and enclosing a space within the balloon separate from the lumen, wherein at least a portion of the vessel is fabricated of a gelatin that is soluble in at least one liquid selected from the group consisting of;
1. water,2. organic acids that are liquid at room temperature, and3. solutions of mineral or organic acids;
and wherein the vessel comprises a receptacle fabricated of the gelatin and having a mouth, further wherein the receptacle is attached at the mouth to a septum by a liquid-impermeable seal; and
4) a self-sealing valve providing fluid communication into the vessel from outside the balloon, wherein the self-sealing valve is the septum.
2 Assignments
0 Petitions
Accused Products
Abstract
A self-inflating, intragastric balloon device is activated by addition of an activating liquid into an acid or water soluble vessel located within the balloon. After an approximately pre-determined time period post-activation, the activating liquid breaches the vessel wall and causes contact between an acid in liquid form and an emissive substance within the balloon, causing it to inflate. The device is conveniently provided to medical personnel as part of a kit that further contains a syringe and the activating liquid. The device also can have acid or pepsin degradable portions that cause it to deflate after residing in the stomach for a prolonged period of time during which it imparts a feeling of satiety in the patient.
243 Citations
22 Claims
-
1. A self-inflating intragastric medical device comprising:
-
1) an uninflated, ingestible, substantially liquid-impermeable balloon having an exterior surface and an interior surface, the interior surface bounding a lumen; 2) an emissive substance enclosed within the balloon, wherein the emissive substance is a substance that liberates gas when contacted with a reactants; 3) a vessel enclosed within the balloon and enclosing a space within the balloon separate from the lumen, wherein at least a portion of the vessel is fabricated of a gelatin that is soluble in at least one liquid selected from the group consisting of; 1. water, 2. organic acids that are liquid at room temperature, and 3. solutions of mineral or organic acids; and wherein the vessel comprises a receptacle fabricated of the gelatin and having a mouth, further wherein the receptacle is attached at the mouth to a septum by a liquid-impermeable seal; and 4) a self-sealing valve providing fluid communication into the vessel from outside the balloon, wherein the self-sealing valve is the septum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A self-inflating intragastric medical device comprising:
-
1) an uninflated, ingestible, substantially liquid-impermeable balloon having an exterior surface and an interior surface, the interior surface bounding a lumen; 2) an emissive substance enclosed within the balloon, wherein the emissive substance is a substance that liberates gas when contacted with a reactant; 3) a vessel enclosed within the balloon and enclosing a space within the balloon separate from the lumen, wherein at least a portion of the vessel is fabricated of a gelatin that is soluble in at least one liquid selected from the group consisting of; 1. water, 2. organic acids that are liquid at room temperature, and 3. solutions of mineral or organic acids; and wherein the vessel comprises a receptacle fabricated of the gelatin and having a mouth, further wherein the receptacle is attached at the mouth to a septum by a liquid-impermeable seal; and 4) a self-sealing valve providing fluid communication into the vessel from outside the balloon, wherein the self-sealing valve is the septum, and wherein the receptacle is attached to the septum by; 1) moistening the mouth of the receptacle with water, thereby causing the gelatin proximate to the mouth to soften, 2) contacting the mouth of the receptacle with the septum, and 3) hardening the softened gelatin to form a liquid-impermeable seal between the septum and receptacle.
-
-
19. A self-inflating intragastric medical device comprising:
-
1) an uninflated, ingestible, substantially liquid-impermeable balloon having an exterior surface and an interior surface, the interior surface bounding a lumen, 2) an emissive substance enclosed within the balloon, wherein the emissive substance is a substance that liberates gas when contacted with a reactant, 3) a vessel enclosed within the balloon and enclosing a space within the balloon separate from the lumen, wherein at least a portion of the vessel is fabricated of a material that is soluble in at least one liquid selected from the group consisting of 1. water, 2. organic acids that are liquid at room temperature, and 3. solutions of mineral or organic acids, and 4) a self-sealing valve providing fluid communication into the vessel from outside the balloon, wherein the self-sealing valve is a septum, and further comprising a reactant enclosed within the vessel and separated from the emissive substance by the vessel wall. - View Dependent Claims (20, 21, 22)
-
Specification