Self-inflating intragastric balloon for losing weight

Abstract

The utility model discloses a self-inflating intragastric balloon for losing weight, which belongs to the technical field of medical instruments and comprises a degradable capsule shell, a rubber plug arranged at one end in the capsule shell and an expandable balloon arranged in the capsule shell and tightly connected with the rubber plug, and the rubber plug is connected with the capsule shell and provided with an injection channel. And a soluble balloon filled with reaction powder is arranged in the expandable balloon. The self-inflating intragastric balloon is reasonable in structure, convenient to take, capable of avoiding pain of a user, safe and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a self-inflating gastric balloon for weight loss. Background Technique

[0002] In recent years, the gastric balloon has received extensive clinical attention as a simple volume-limiting weight loss strategy. It achieves weight loss by placing a balloon filled with liquid or gas made of special materials in the stomach to occupy the gastric space, reduce the effective gastric volume, delay gastric emptying, and increase the sense of fullness. The gastric balloon can be used for obese patients who have not successfully lost weight through diet and exercise alone, or for transitional treatment of pre-operative weight loss before bariatric surgery. Its weight loss efficacy and safety have been verified in multiple international clinical trials.

[0003] Currently reported gastric balloons are relatively cumbersome to use. They require the assistance of a gastroscope in the hospital to send the balloon into the stomach, causing pain to the patient during the process; or they require a tube to introduce gas or liquid into the gastric balloon, which also requires the operation of a professional doctor; or when the gastric balloon is not needed, a catheter needs to be inserted into the stomach for deflation, which also requires the operation of a professional doctor and is a painful process.

[0004] Therefore, there is an urgent need for a gastric balloon that is convenient to use, with convenient operation for patients and no pain during the whole process of use. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a self-inflating gastric balloon for weight loss, which is convenient to take, safe and reliable.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A self-inflating gastric balloon for weight loss, characterized in that it includes a degradable capsule shell, a rubber stopper arranged at one end inside the capsule shell, and an inflatable balloon arranged inside the capsule shell and tightly connected to the rubber stopper. The rubber stopper is connected to the capsule shell and is provided with an injection channel, and the inflatable balloon is internally provided with a soluble balloon filled with reaction powder.

[0008] A further improvement of the technical solution of the utility model is that: the reaction powder includes inorganic acid salts, and the inorganic acid salts include one or more of sodium carbonate, sodium bicarbonate, calcium carbonate, calcium bicarbonate, potassium carbonate, and potassium bicarbonate.

[0009] A further improvement of the technical solution of the utility model is that a liquid medicine channel is arranged inside the rubber stopper and is communicated with the inside of the inflatable balloon.

[0010] A further improvement of the technical solution of the present utility model lies in that: the material of the capsule shell includes gelatin, hydroxypropyl methylcellulose, sodium alginate, calcium salt and PVA.

[0011] A further improvement of the technical solution of the present utility model lies in that: the material of the soluble balloon shell includes hydroxypropyl starch, carrageenan and modified gelatin.

[0012] A further improvement of the technical solution of the present utility model lies in that: the inflatable balloon is a high molecular material resistant to acid and having ductility, and a radiopaque marker is added to the material.

[0013] A further improvement of the technical solution of the present utility model lies in that: the radiopaque marker includes one or several of bismuth subcarbonate, barium sulfate, bismuth hydroxide, bismuth trioxide and tungsten.

[0014] A further improvement of the technical solution of the present utility model lies in that: it further includes a syringe, and the syringe is filled with citric acid or acetic acid solution.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model is:

[0016] The self-inflating intragastric balloon for weight loss of the present application overcomes the problem of patient pain during the use of conventional weight loss gastric balloons, and there is no need to inflate or fill the balloon with liquid during the use process. At the same time, it also avoids the situation that if the intragastric balloon is filled with liquid, the patient will feel bloated and have a sense of sagging in the stomach, and the feeling is not good.

[0017] Before the user takes the self-inflating intragastric balloon for weight loss of the present application, an organic acid, such as citric acid, is injected into the injection channel through a syringe, and then the user takes it. The self-inflating intragastric balloon enters the stomach, the capsule shell dissolves in the stomach, and the soluble balloon also releases the reaction powder therein, such as sodium carbonate or sodium bicarbonate, under the action of the injected organic acid, and reacts with the injected organic acid to release CO2, inflating and bulging the inflatable balloon, thereby occupying a certain space in the stomach, making the user feel full, reducing food intake, and achieving the purpose of weight loss.

[0018] The material of the inflatable balloon has certain acid resistance and good ductility, and can be retained in the stomach for a period of time. When the inflatable balloon is corroded and damaged by gastric acid, the gas and liquid therein are released and discharged through the digestive tract.

[0019] At the same time, a radiopaque marker is added to the material of the inflatable balloon, which can be used for ultrasonic guidance positioning and radiation guidance positioning, and can facilitate the doctor to check the position and shape of the self-inflating intragastric balloon in the body. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the self-inflating intragastric balloon for weight loss of the present utility model;

[0021] Figure 2 It is a schematic diagram after the inflatable balloon is filled;

[0022] Among them, 1 is the capsule shell, 2 is the inflatable balloon, 3 is the soluble balloon, 4 is the rubber stopper, 5 is the liquid medicine channel, and 6 is the injection channel. Specific implementation manner

[0023] The following further describes the present utility model in detail with reference to the embodiments:

[0024] As Figure 1 shown, a self-inflating intragastric balloon for weight loss includes a degradable capsule shell 1, a rubber stopper 4 provided at one end inside the capsule shell 1, and an inflatable balloon 2 provided inside the capsule shell 1 and tightly connected to the rubber stopper 4. The rubber stopper 4 is connected to the capsule shell 1 and is provided with an injection channel 6. A soluble balloon 3 filled with reaction powder is provided inside the inflatable balloon 2. A liquid medicine channel 5 is provided inside the rubber stopper 4 and is communicated with the inside of the inflatable balloon 2. The material of the capsule shell 1 includes gelatin, hydroxypropyl methylcellulose, sodium alginate, calcium salt and PVA. The material of the outer shell of the soluble balloon 3 includes hydroxypropyl starch, carrageenan, and modified gelatin. The degradation rate of the capsule shell 1 is faster than that of the outer shell of the soluble balloon 3. The inflatable balloon 2 is made of an acid-resistant and ductile polymer material, and a radiopaque marker such as bismuth subcarbonate, barium sulfate, bismuth oxychloride, bismuth trioxide or tungsten is added to this material, which can be used as an ultrasound-guided positioning point and a radiation-guided positioning point.

[0025] The reaction powder includes inorganic acid salts, and the inorganic acid salts include one or more of sodium carbonate, sodium bicarbonate, calcium carbonate, calcium bicarbonate, potassium carbonate and potassium bicarbonate.

[0026] The self-inflating intragastric balloon further includes a syringe filled with an organic acid such as citric acid or acetic acid solution. When in use, the liquid in the syringe is injected into the inflatable balloon through the injection channel.

[0027] Usage method:

[0028] When the patient uses it, an organic acid such as citric acid or acetic acid solution is injected along the injection channel with a syringe. The solution enters the inside of the inflatable balloon 2 along the liquid medicine channel 5. After pulling out the syringe, the patient swallows the self-inflating intragastric balloon of the present application with water. After the balloon enters the stomach, the capsule shell 1 is rapidly degraded under the action of gastric acid, and the outer shell of the soluble balloon 3 is also gradually degraded under the action of the organic acid. The organic acid contacts and reacts with the reaction powder inside the soluble balloon 3, generating a large amount of gas to fill and expand the inflatable balloon 2. After expansion, the volume is about 250 - 500 mL.

[0029] The inflatable balloon 2 has a certain acid resistance, but it will still degrade after a certain period of time, the gas inside it is discharged, and the fragments of the inflatable balloon 2 and the rubber plug 4 are excreted out of the body with normal metabolism. A radiopaque marker is added to the material of the inflatable balloon 2, and the inflatable balloon 2 is covered with radiopaque markers after inflation, such as Figure 2 as shown, which can facilitate doctors to conveniently check its position in the stomach and the inflation condition with equipment such as ultrasound.

Claims

1. A self-inflating intragastric balloon for weight loss, characterized in that: The invention comprises a degradable capsule shell (1), a rubber plug (4) arranged at one end of the capsule shell (1), and an expandable balloon (2) arranged inside the capsule shell (1) and tightly connected to the rubber plug (4); the rubber plug (4) is connected to the capsule shell (1) and is provided with an injection channel (6); a soluble balloon (3) filled with reaction powder is provided inside the expandable balloon (2); the expandable balloon (2) is made of an acid-resistant and ductile polymer material, and a radiopaque marker is added to the material; and the invention also comprises a syringe, which contains a citric acid solution or an acetic acid solution.

2. A self-inflating intragastric balloon for weight loss according to claim 1, characterized in that: The reaction powder includes an inorganic acid salt, and the inorganic acid salt includes one of sodium carbonate, sodium bicarbonate, calcium carbonate, calcium bicarbonate, potassium carbonate and potassium bicarbonate.

3. A self-inflating intragastric balloon for weight loss according to claim 1, characterized in that: A liquid medicine channel (5) is provided inside the rubber stopper (4) and is communicated with the inside of the expandable balloon (2).

4. A self-inflating intragastric balloon for weight loss according to claim 1, characterized in that: The radiopaque marker includes one of bismuth subcarbonate, barium sulfate, bismuth oxychloride, bismuth trioxide, and tungsten.

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