An assisted gastric emptying device

Abstract

This invention provides an auxiliary gastric emptying device, comprising: a main tube, a cardiac balloon, and a pyloric balloon; wherein, the main tube includes a pyloric balloon tube, one end of which has an inflation port, and the other end or the middle of which is connected to the pyloric balloon; the main tube also includes a cardiac balloon tube, one end of which has an inflation port, and the other end or the middle of which is connected to the cardiac balloon; the main tube further includes a gastric cavity inflation tube, one end of which has an inflation port, and the other end or the middle of which has an exhaust port, the exhaust port being positioned within the gastric cavity to inflate and pressurize the gastric cavity; the cardiac balloon is positioned at the cardiac sphincter to close the cardiac sphincter when inflated; the pyloric balloon is positioned at the pylorus and has a drainage channel to open the pylorus when inflated, allowing gastric juice in the gastric cavity to be discharged through the drainage channel under inflated and pressurized conditions; this invention can assist the gastric cavity in gastric emptying, which is beneficial for shortening recovery time.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a device for assisting gastric emptying. Background Technology

[0002] Functional delayed gastric emptying (FDGE), also known as gastroparesis syndrome, refers to a disorder of the nerve and muscle function of the stomach, preventing normal gastric emptying. FDGE is usually a functional disorder, but if not properly managed, it can severely impact a patient's cardiopulmonary function, causing hypoproteinemia and electrolyte imbalance, leading to respiratory and circulatory physiological changes, and even death.

[0003] However, there is no corresponding treatment for gastric emptying disorders. In the early 1990s, some scholars applied self-expanding metallic stents to treat pyloric obstruction. This method has advantages in reducing trauma and shortening postoperative recovery time. However, due to the high risk of stent migration and the tendency of tumors to grow along the stent, the stent re-obstruction rate remains high, leading to complications including severe infection and anastomotic leakage. Patients suffer greatly and may even require a second surgery. For the treatment of pyloric obstruction, endoscopic stent placement and surgical treatment are equally effective. The former has a more positive effect on shortening postoperative recovery time, but its late complication rate is higher, mainly stent blockage and migration, indicating room for improvement.

[0004] Domestic clinical studies have confirmed that endoscopic placement of metallic stents is a safe and effective palliative treatment for malignant gastric outlet obstruction. However, due to the high cost of metallic stent treatment and the fact that they cannot be removed after placement, they are suitable for malignant lesions that are difficult to resect and benign obstructive lesions, but not for the treatment of gastric emptying disorders. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide an auxiliary gastric emptying device to eliminate or improve one or more defects existing in the prior art.

[0006] This invention provides an auxiliary gastric emptying device, comprising: a main tube, a cardiac balloon, and a pyloric balloon; wherein, the main tube includes a pyloric balloon tube, one end of which has an inflation port, and the other end or the middle of which is connected to the pyloric balloon; the main tube further includes a cardiac balloon tube, one end of which has an inflation port, and the other end or the middle of which is connected to the cardiac balloon; the main tube further includes a gastric cavity inflation tube, one end of which has an inflation port, and the other end or the middle of which has an exhaust port, the exhaust port being positioned within the gastric cavity to inflate and pressurize the gastric cavity.

[0007] The cardia airbag is positioned at the cardia to close the cardia when inflated; the pyloric airbag is positioned at the pylorus and has a drainage channel to open the pylorus when inflated, allowing gastric juice in the stomach cavity to be discharged through the drainage channel under inflated and pressurized conditions.

[0008] In some embodiments of the present invention, the pyloric airbag tube and the cardia airbag tube are configured as the same airbag inflation tube; one end of the airbag inflation tube has an inflation port, the middle part is connected to the cardia airbag, and the other end is connected to the pyloric airbag, so that the cardia airbag and the pyloric airbag are inflated or deflated at the same time.

[0009] In some embodiments of the present invention, the length of the main tube from the pyloric airbag to the exhaust port is d, the length of the main tube from the pyloric airbag to the cardia airbag is D, and the exhaust port is configured to satisfy: 0.5*D≤d≤0.9*D.

[0010] In some embodiments of the present invention, the vent is provided with a one-way valve so that the gas in the gastric inflation tube can be unidirectionally guided into the stomach cavity.

[0011] In some embodiments of the present invention, the vent is provided with a waterproof and breathable membrane so that the gas inside the gastric cavity inflation tube can pass through the waterproof and breathable membrane into the gastric cavity, while preventing the liquid inside the gastric cavity from entering the gastric cavity inflation tube.

[0012] In some embodiments of the present invention, the drainage channel has a flared portion, which is an outwardly flared funnel shape and is disposed at the entrance of the drainage channel.

[0013] In some embodiments of the present invention, the cardia airbag and the pyloric airbag are configured as at least one of a cylindrical airbag or a spherical airbag.

[0014] In some embodiments of the present invention, the cardia airbag is configured as an annular airbag, the central part of which is used to house the main guide tube.

[0015] In some embodiments of the present invention, the pyloric airbag is configured as an annular airbag, the central part of which is used to form the drainage channel to support the drainage channel to remain open.

[0016] In some embodiments of the present invention, the pyloric airbag and / or the cardia airbag are sleeved on the outer surface of the main tube and are fixedly connected to the annular wall of the main tube.

[0017] In some embodiments of the present invention, the pyloric airbag and / or the cardia airbag are disposed on one side of the main tube and are fixedly connected to the outer wall of the main tube.

[0018] In some embodiments of the present invention, the main tube is provided with an airbag groove so that the airbag is housed inside the airbag groove in the deflated state, thereby ensuring that the outer diameter of the tube wall at each position of the main tube remains consistent.

[0019] In some embodiments of the present invention, the balloon inflation tube is disposed inside the gastric cavity inflation tube, and the side wall of the gastric cavity inflation tube has an opening so that the balloon inflation tube communicates with the balloon outside the main tube.

[0020] The internal cavity of the airbag inflation tube is separated from the internal cavity of the gastric inflation tube.

[0021] In some embodiments of the present invention, the length of the main tube is configured to be 600mm to 1200mm, and its outer diameter is configured to be 3mm to 6mm; the outer diameter of the pyloric air bladder is configured to be 8mm to 15mm, the outer diameter of the cardia air bladder is configured to be 8mm to 10mm, and the inner diameter of the drainage channel is configured to be 2mm to 4mm.

[0022] In some embodiments of the present invention, the gastric emptying assist device further includes an air pump for connecting to each inflation port to inflate or deflate the air sac or gastric cavity.

[0023] The beneficial effects that can be obtained by the assisted gastric emptying device described in the embodiments of the present invention include at least the following:

[0024] The overall structure of the gastric emptying assist device of the present invention is a main catheter connecting a pyloric balloon and a cardiac balloon. The balloons can be inflated according to the patient's condition to assist in the drainage of gastric juice from the stomach cavity. The gastric tube is equipped with an air vent, which can inflate and pressurize the stomach cavity, thus accelerating the drainage of gastric juice. The cardiac balloon is located at the cardiac sphincter and can close the cardiac sphincter when inflated. The pyloric balloon is located at the pyloric sphincter and can open the pyloric sphincter when inflated. The pyloric balloon also has a drainage channel, allowing gastric juice to drain from the stomach cavity under inflated and pressurized conditions. The gastric emptying assist device in this embodiment of the invention helps shorten the recovery time for postoperative gastroparesis syndrome, simplifies the treatment procedure, and is of great significance for patient recovery.

[0025] Additional advantages, objects, and features of the invention will be set forth in part in the description which follows, and will also become apparent in part to those skilled in the art upon studying the description, or may be learned by practice of the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0026] Those skilled in the art will understand that the objectives and advantages achievable with the present invention are not limited to those specifically described above, and that the above and other objectives achievable with the present invention will become clearer from the following detailed description. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, are not intended to limit the scope of the invention. The components in the drawings are not drawn to scale but are merely illustrative of the principles of the invention. For ease of illustration and description of certain parts of the invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the invention. In the drawings:

[0028] Figure 1 This is a schematic diagram illustrating the working principle of the gastric emptying assist device in one embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of an auxiliary gastric emptying device in one embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of the auxiliary gastric emptying device in another embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram showing the location of the exhaust port in one embodiment of the present invention.

[0032] Figure 5 This is a cross-sectional view of the pyloric air bladder in one embodiment of the present invention.

[0033] Figure 6 This is a radial cross-sectional view of the gastric emptying device in an inflated state according to an embodiment of the present invention.

[0034] Figure 7 This is a radial cross-sectional view of the gastric emptying device in the deflation state according to an embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram illustrating the technical effect of an auxiliary gastric emptying device in one embodiment of the present invention.

[0036] Figure label:

[0037] 1. Main tube; 11. Inflation tube for balloon; 11-1. Pyloric balloon tube; 11-2. Cardia balloon tube; 12. Gastric cavity inflation tube; 121. Exhaust port; 2. Cardia balloon; 3. Pyloric balloon; 31. Drainage channel; 311. Dilatation. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this invention are used to explain the invention, but are not intended to limit the invention.

[0039] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0040] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0041] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0042] In the following description, embodiments of the invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0043] To address the problems of metal stents in existing gastric emptying devices being prone to blockage and displacement leading to complications, as well as high treatment costs and the inability to remove them after placement, this invention provides an auxiliary gastric emptying device. Unlike the metal stents placed endoscopically in existing technologies, the auxiliary gastric emptying device in this embodiment features a main catheter 1 connecting a pyloric balloon 3 and a cardia balloon 2. The balloons can be inflated according to the patient's condition to assist in the drainage of gastric fluid from the stomach cavity. The pyloric balloon 3, positioned at the pylorus, can open the pylorus when inflated. Furthermore, the pyloric balloon 3 is equipped with a drainage channel 31, allowing gastric fluid to drain from the stomach cavity. This facilitates shorter recovery time for postoperative gastroparesis syndrome, simplifies treatment procedures, and is of great significance for patient rehabilitation.

[0044] Embodiments of the present invention provide an auxiliary gastric emptying device, such as... Figure 1 and Figure 2As shown, the assisted gastric emptying device includes: a main tube 1, a cardiac balloon 2, and a pyloric balloon 3; wherein, the main tube 1 includes a pyloric balloon tube 11-1, one end of which has an inflation port, and the other end or the middle of which is connected to the pyloric balloon 3; the main tube 1 also includes a cardiac balloon tube 11-2, one end of which has an inflation port, and the other end or the middle of which is connected to the cardiac balloon 2; the main tube 1 also includes a gastric cavity inflation tube 12, which... The gastric inflation tube 12 has an inflation port at one end and an exhaust port 121 at the other end or in the middle. The exhaust port 121 is used to be placed inside the gastric cavity to inflate and pressurize the gastric cavity. The cardia airbag 2 is used to be placed at the cardia so that it closes the cardia when inflated. The pyloric airbag 3 is used to be placed at the pylorus and has a drainage channel 31 so that it opens the pylorus when inflated, allowing gastric juice in the gastric cavity to be discharged from the gastric cavity through the drainage channel 31 under inflated and pressurized conditions.

[0045] The gastric emptying device achieves different functions and effects by inflating or deflating different air inlets. For example, inflating or deflating the pyloric balloon tube 11-1 controls the expansion or contraction of the pyloric balloon 3; inflating or deflating the cardia balloon tube 11-2 controls the expansion or contraction of the cardia balloon 2; and inflating or deflating the gastric cavity air inlet tube 12 can regulate the air pressure inside the gastric cavity.

[0046] A gastric emptying aid device is inserted into the patient's body via endoscopy, such as... Figure 8 As shown, the inflation port is left outside the patient's body, the main tube 1 passes through the patient's nasal cavity and esophagus to reach the inside of the patient's stomach cavity, the pyloric airbag 3 is set at the pylorus, and the cardia airbag 2 is set at the cardia. Based on the patient's gastric meridian circulation pattern, the gastric emptying device initiates the emptying process at regular intervals. First, the pyloric balloon 3 inflates and expands, opening the pylorus to promote gastric juice drainage. Simultaneously, the drainage channel 31 of the pyloric balloon 3 opens to guide the gastric juice out. Then, the cardiac balloon 2 inflates and closes the cardiac sphincter, preventing gastric juice or gas from flowing back into the esophagus and providing a closed gastric cavity space for subsequent gastric pressurization. Next, the gastric inflation tube 12 inflates, allowing gas to enter the gastric cavity through the exhaust port 121 to increase gastric pressure and accelerate gastric juice drainage. After gastric juice drainage is complete, the inflation port of the gastric inflation tube 12 deflates, returning the gastric pressure to the normal range. Then, the pyloric balloon 3 deflates and contracts, closing the pylorus to prevent gastric juice from flowing back into the duodenum. Finally, the cardiac balloon 2 contracts, allowing the cardiac sphincter to open normally.

[0047] The overall structure of the assisted gastric emptying device in the above embodiment is as follows: the main catheter 1 connects the pyloric balloon 3 and the cardia balloon 2. It can assist in the drainage of gastric juice by inflating the balloons according to the patient's condition. The gastric tube is equipped with an air vent 121, which can inflate and pressurize the gastric cavity, thus accelerating the drainage of gastric juice. The cardia balloon 2 is positioned at the cardia and can close the cardia when inflated. The pyloric balloon 3 is positioned at the pylorus and can open the pylorus when inflated. The pyloric balloon 3 is equipped with a drainage channel 31, which allows gastric juice to drain from the gastric cavity under inflated and pressurized conditions. This embodiment of the invention provides an auxiliary gastric emptying device. Gastric emptying aids can shorten the recovery time for postoperative gastroparesis syndrome and simplify treatment procedures, which is of great significance to patient recovery. In addition to this, the gastric emptying aid also has certain effects on other conditions. For example, by inflating the cardia balloon 2 to support and expand the cardia or esophagus, it can improve the symptoms of benign esophageal stenosis and cardia obstruction. By placing the pyloric balloon 3 in the duodenum, the inflated pyloric balloon 3 can improve the symptoms of benign duodenal contraction and intestinal obstruction. Therefore, the structure and position of the gastric emptying aid can be flexibly adjusted according to the actual use scenario to achieve different treatment effects.

[0048] In addition, such as Figure 8 As shown, based on the location of the auxiliary gastric emptying device and its own structural characteristics, after the patient's gastric emptying disorder is cured, the auxiliary gastric emptying device can be degassed and pulled directly out of the patient's body through the main tube 1, without the need for surgery or gastroscopy. This simplifies the treatment process and saves medical resources.

[0049] In some embodiments of the present invention, such as Figure 3 As shown, the pyloric balloon tube 11-1 and the cardia balloon tube 11-2 are configured as the same balloon inflation tube 11; one end of the balloon inflation tube 11 has an inflation port, the middle part is connected to the cardia balloon 2, and the other end is connected to the pyloric balloon 3, so that the cardia balloon 2 and the pyloric balloon 3 can be inflated or deflated at the same time. The expansion or contraction of the pyloric balloon 3 and the cardia balloon 2 can be controlled at the same time through one inflation port, which can reduce the operation steps of the auxiliary gastric emptying device, simplify the structure of the main tube 1, and thus reduce the outer diameter of the main tube 1, which is beneficial to reduce the patient's discomfort to the inserted main catheter 1 and improve the treatment experience.

[0050] In some embodiments of the present invention, such as Figure 4As shown, the length of the main tube 1 corresponding to the pyloric air sac 3 and the exhaust port 121 is d, and the length of the main tube 1 corresponding to the pyloric air sac 3 and the cardia air sac 2 is D. The exhaust port 121 is configured to satisfy: 0.5*D≤d≤0.9*D, so that the exhaust port 121 is located in the upper part of the stomach cavity, which can prevent gastric juice or food from entering the gastric inflation tube 12 through the exhaust port 121. It can also allow pressurized gas to accumulate in the upper part of the stomach cavity and then push the gastric juice out from the pylorus, avoiding violent movement of gastric juice or food in the lower part of the stomach cavity due to gas flow. This allows the gastric juice and food in the stomach cavity to be discharged quietly and smoothly from the pylorus in the lower part of the stomach cavity, which helps to reduce stomach discomfort during the gastric emptying process.

[0051] As one possible implementation, the vent 121 is equipped with a one-way valve so that the gas in the gastric inflation tube 12 can be unidirectionally guided into the stomach cavity. Since the vent 121 is set as a one-way valve, the gastric inflation tube 12 can only inflate into the stomach cavity and cannot deflate. Therefore, the decompression of the stomach cavity needs to be achieved by the deflation and contraction of the cardia bladder 2. After the cardia bladder 2 deflates, the stomach cavity is connected to the esophagus, and the gas inside the stomach cavity is directly discharged along the esophagus, so that the stomach cavity returns to the normal gas pressure range.

[0052] As another possible implementation, the vent 121 is provided with a waterproof and breathable membrane so that the gas inside the gastric cavity inflation tube 12 can pass through the waterproof and breathable membrane into the gastric cavity, while blocking the gastric cavity liquid from entering the gastric cavity inflation tube 12. Since gastric juice has a certain degree of corrosiveness, the waterproof and breathable membrane used also needs to have corrosion resistance to prevent it from being corroded and damaged during use.

[0053] In some embodiments of the present invention, such as Figure 5 As shown, the drainage channel 31 has a flared portion 311, which is in the shape of an outwardly flared funnel. It is located at the entrance of the drainage channel 31. The flared portion 311 can improve the drainage effect of the drainage channel 31 on gastric juice and prevent gastric juice or food from blocking the entrance of the drainage channel 31. At the same time, the flared portion 311 can also increase the fluid flow rate inside the drainage channel, which is conducive to accelerating the discharge of gastric juice.

[0054] In some embodiments of the present invention, the cardia airbag 2 and the pyloric airbag 3 are configured as at least one of cylindrical airbags or spherical airbags. The cardia airbag 2 and the pyloric airbag 3 are made of elastic soft material. In the contracted state, they are thin sheet structures with inner and outer layers attached to each other. After being inflated in the inner cavity, they expand into the corresponding cylindrical or spherical shape. The shape of the airbag does not have sharp parts, and the edges of the structure are all set as arc or curved structures, which helps to reduce the impact and stimulation on the gastrointestinal wall after the airbag is inflated, so as to alleviate the patient's discomfort.

[0055] In some embodiments of the present invention, the cardia airbag 2 is configured as an annular airbag, the central part of which is used to house the main tube 1. The cardia airbag 2 is configured as an annular airbag. After inflation, the cardia airbag 2 contacts the inner wall of the cardia. Due to the elasticity and variability of the airbag, the cardia airbag 2 can fully fit the irregular inner wall structure of the cardia, which is beneficial to improving the sealing effect of the cardia airbag 2. At the same time, it can avoid direct contact between the main tube 1 and the cardia, reducing the stimulation to the patient's gastrointestinal wall.

[0056] In some embodiments of the present invention, the pyloric airbag 3 is configured as an annular airbag, the middle part of which is used to form the drainage channel 31 to support the drainage channel 31 to keep it open. The annular structure has better structural stability than the flat structure. The annular structure of the pyloric airbag 3 makes the radial force of the drainage channel 31 balanced, and can provide a stable support structure for the drainage channel 31 in the middle, so that the drainage channel is not easily compressed and closed. At the same time, the drainage channel 31 in the middle of the annular airbag can have a larger opening area, which is beneficial to increase the flow rate of gastric juice.

[0057] In some embodiments of the present invention, the pyloric airbag 3 and / or the cardia airbag 2 are sleeved on the outer surface of the main tube 1 and are fixedly connected to the annular wall of the main tube 1. The airbags are evenly distributed on the annular circumferential surface of the main tube 1. When inflated, the airbags around the main tube 1 expand evenly, wrapping the main tube 1 in the middle of the airbags. The main tube 1 and the patient's gastrointestinal wall come into contact with each other through the inflated soft airbags, which can reduce the stimulation of the main tube 1 on the gastrointestinal mucosa and prevent the patient from having a rejection reaction to the main tube 1 inserted into the body.

[0058] In some embodiments of the present invention, the pyloric airbag 3 and / or the cardia airbag 2 are disposed on one side of the main tube 1 and are fixedly connected to the outer wall of the main tube 1. The airbag is disposed on the side wall of the main tube 1, which makes the structure of the main tube 1 simple and does not require additional processing of the catheter structure during manufacturing, which helps to reduce production costs.

[0059] In some embodiments of the present invention, the main tube 1 is provided with an air bladder groove so that the air bladder can be housed inside the air bladder groove in the deflated state. This ensures that the outer diameter of the main tube 1 remains consistent at all locations. Maintaining a consistent outer diameter of the main tube 1 avoids the appearance of protruding structures on the outer wall of the main tube 1, preventing irritation or damage to the gastrointestinal lining during use. The air bladder groove has a smooth, curved groove structure, which prevents gastric juice or food residue from remaining inside the air bladder groove during use, thus avoiding bacterial growth.

[0060] In some embodiments of the present invention, such as Figure 6 and Figure 7As shown, the balloon inflation tube 11 is disposed inside the gastric cavity inflation tube 12. The side wall of the gastric cavity inflation tube 12 has an opening so that the balloon inflation tube 11 is connected to the balloon outside the main tube 1. The balloon inflation tube 11 is disposed on the inner wall of the gastric cavity inflation tube 12, which can effectively utilize the internal space of the gastric tube lumen. At this time, the outer diameter of the gastric tube lumen is the outer diameter of the main catheter 1. The corresponding function of the auxiliary gastric emptying device can be realized by setting a thinner main catheter 1, which is beneficial to improving the patient's treatment comfort and reducing the difficulty of inserting the auxiliary gastric emptying device by gastroscopy.

[0061] The internal cavity of the balloon inflation tube 11 is separated from the internal cavity of the gastric inflation tube 12, so that the balloon inflation operation and the gastric cavity pressurization operation do not affect each other, ensuring the patient's life safety. Since the balloon inflation tube 11 is mainly used to inflate the balloon to open the pyloric balloon 3 and the cardia balloon 2, the gas flow rate inside it is faster and the air pressure is higher. On the other hand, the gastric inflation tube 12 is mainly used to inflate the inner wall of the stomach cavity, so the gas flow rate inside it is slower and the air pressure is lower. The separation of the balloon inflation tube 11 and the gastric inflation tube 12 can prevent the high-pressure gas inside the balloon inflation tube 11 from entering the stomach cavity through the gastric inflation tube 12, which would cause the gas pressure inside the stomach cavity to be too high and thus affect the patient's life safety.

[0062] In some embodiments of the present invention, the length of the main tube 1 is configured to be 600mm to 1200mm, and its outer diameter is configured to be 3mm to 6mm; the outer diameter of the pyloric balloon 3 is configured to be 8mm to 15mm, the outer diameter of the cardia balloon 2 is configured to be 8mm to 10mm, and the inner diameter of the drainage channel 31 is configured to be 2mm to 4mm, and so on. For patients with special physical conditions, the length and size of the auxiliary gastric emptying device can be customized according to the actual situation.

[0063] In some embodiments of the present invention, the assisted gastric emptying device further includes an air pump, which is connected to each inflation port to inflate or deflate the air bag or gastric cavity. The air pump should be able to output gas at different pressures and flow rates to meet the different operational requirements of the air bag inflation tube 11 and the gastric cavity inflation tube 12. The air pump is also equipped with a timer, which can automatically start performing the set work after the timer is set.

[0064] The beneficial effects that can be achieved by the technical solution of the assisted gastric emptying device according to the embodiments of the present invention include at least the following:

[0065] (1) The gastric emptying device in the embodiments of the present invention can assist the patient's gastric cavity in emptying gastric juice, which is beneficial to shorten the recovery time of postoperative gastroparesis syndrome, simplify the treatment procedure, and is of great significance to the patient's recovery.

[0066] (2) The gastric tube in this embodiment of the invention is provided with an air vent, which can pressurize the gastric cavity and accelerate the discharge of gastric juice.

[0067] (3) In the embodiments of the present invention, the cardia airbag is set at the cardia and can close the cardia when inflated to prevent gastric juice from flowing back into the esophagus.

[0068] (4) In the embodiments of the present invention, the pyloric airbag is set at the pylorus and can open the pylorus in the inflated state so that gastric juice can be discharged from the stomach cavity through the pylorus.

[0069] (5) The pyloric balloon in this embodiment of the invention is provided with a drainage channel, which enables the gastric juice in the gastric cavity to be discharged from the gastric cavity through the drainage channel under the condition of inflation and pressurization.

[0070] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0071] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the embodiments of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for assisting gastric emptying, characterized in that, The auxiliary gastric emptying device includes: a main tube (1), a cardia balloon (2), and a pyloric balloon (3). The main tube (1) includes a pyloric airbag tube (11-1), one end of which has an inflation port, and the other end or the middle of which is connected to the pyloric airbag (3). The main tube (1) also includes a cardia airbag tube (11-2), one end of which has an inflation port and the other end or the middle is connected to the cardia airbag (2); The main tube (1) also includes a gastric cavity inflation tube (12), one end of which has an inflation port and the other end or the middle has an exhaust hole (121). The exhaust hole (121) is used to be placed in the gastric cavity so as to inflate and pressurize the gastric cavity. The esophageal airbag (2) is used to be positioned at the esophageal opening so that it can close the esophageal opening when inflated; The pyloric airbag (3) is configured as an annular airbag, which is used to be placed at the pyloric position and to form a drainage channel (31) in the middle, so that it can open the pylorus when inflated and support the drainage channel (31) to keep it open, so that the gastric juice in the stomach cavity can be discharged from the stomach cavity through the drainage channel (31) under the inflated and pressurized state.

2. The gastric emptying assist device according to claim 1, characterized in that, The pyloric airbag tube (11-1) and the cardia airbag tube (11-2) are configured to use the same airbag inflation tube (11). One end of the airbag inflation tube (11) has an inflation port, the middle part is connected to the cardia airbag (2), and the other end is connected to the pyloric airbag (3), so that the cardia airbag (2) and the pyloric airbag (3) are inflated or deflated at the same time.

3. The gastric emptying assist device according to claim 1, characterized in that, The length of the main tube (1) corresponding to the pyloric airbag (3) to the exhaust port (121) is d, the length of the main tube (1) corresponding to the pyloric airbag (3) to the cardia airbag (2) is D, and the setting position of the exhaust port (121) is configured to satisfy: 0.5*D≤d≤0.9*D.

4. The gastric emptying assist device according to claim 1, characterized in that, The vent (121) is equipped with a one-way valve to allow gas in the gastric inflation tube (12) to flow unidirectionally into the stomach cavity; or, The vent (121) is provided with a waterproof and breathable membrane so that the gas inside the gastric cavity inflation tube (12) can pass through the waterproof and breathable membrane into the gastric cavity, and prevent the liquid inside the gastric cavity from entering the gastric cavity inflation tube (12).

5. The gastric emptying assist device according to claim 1, characterized in that, The drainage channel (31) has a flared part (311), which is an outwardly flared funnel shape and is located at the entrance of the drainage channel (31).

6. The gastric emptying assist device according to claim 1, characterized in that, The cardia airbag (2) is configured as either a cylindrical airbag or a spherical airbag; or, The central part of the cardia airbag (2) is used to house the main tube (1).

7. The gastric emptying assist device according to claim 1, characterized in that, The pyloric air bladder (3) and / or the cardia air bladder (2) are sleeved on the outer surface of the main tube (1) and are fixedly connected to the annular wall of the main tube (1); or, The pyloric airbag (3) and / or the cardia airbag (2) are disposed on one side of the main tube (1), and are fixedly connected to the outer wall of the main tube (1); or, The main tube (1) is provided with an airbag groove so that the airbag can be stored inside the airbag groove when it is deflated, so that the outer diameter of the tube wall at each position of the main tube (1) remains consistent.

8. The gastric emptying assist device according to claim 2, characterized in that, The airbag inflation tube (11) is disposed inside the gastric cavity inflation tube (12), and the side wall of the gastric cavity inflation tube (12) has an opening so that the airbag inflation tube (11) is connected to the airbag outside the main tube (1). The internal cavity of the airbag inflation tube (11) is separated from the internal cavity of the gastric inflation tube (12).

9. The gastric emptying assist device according to claim 1, characterized in that, The length of the main tube (1) is configured to be 600mm~1200mm, and its outer diameter is configured to be 3mm~6mm; The outer diameter of the pyloric airbag (3) is configured to be 8 mm to 15 mm, the outer diameter of the cardia airbag (2) is configured to be 8 mm to 10 mm, and the inner diameter of the drainage channel (31) is configured to be 2 mm to 4 mm.

10. The gastric emptying assist device according to claim 1, characterized in that, The gastric emptying aid also includes an air pump, which is connected to each inflation port to inflate or deflate the air sac or gastric cavity.

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