Abdominal cavity drainage tube with inflatable air bag and use method of abdominal cavity drainage tube
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional abdominal drainage tubes are not securely fixed, are prone to displacement, and are prone to leakage from the wound. They cannot adapt to dynamic changes in intra-abdominal pressure, leading to treatment interruption and complications.
An abdominal drainage tube with an inflatable air bladder was designed. The air bladder fits against the inner wall of the abdominal cavity through an inflation component. It is equipped with a pressure sensor and an inflation device to achieve dynamic pressure regulation, ensuring tube fixation and wound leakage prevention.
It achieves stable fixation of the tube, avoids displacement and leakage, adapts to changes in intra-abdominal pressure, and improves the safety and convenience of drainage.
Smart Images
Figure CN121754743A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to an abdominal drainage tube with an inflatable balloon and its method of use. Background Technology
[0002] Abdominal drainage is one of the core diagnostic and treatment methods for conditions such as ascites due to liver cirrhosis, postoperative abdominal effusion, and abdominal infection with effusion. It involves placing a drainage tube into the peritoneal cavity, collecting fluid through the drainage side hole on the side wall of the tube, and connecting an external drainage device to achieve treatment goals such as reducing intra-abdominal pressure and controlling inflammation. Currently, the traditional abdominal drainage tubes commonly used in clinical practice only contain a single drainage tube body in their core structure.
[0003] Traditional drainage tubes rely solely on the friction between the outer wall of the tube and the abdominal wall tissue and peritoneum to maintain their position. However, the intra-abdominal environment and the patient's daily activities can create external forces that interfere with the tube. For patients with large amounts of ascites, the abdominal cavity is spacious, and the tube is prone to displacement due to changes in body position. This can cause the drainage side hole to detach from the fluid accumulation area, resulting in a sharp drop in drainage efficiency. In severe cases, the drainage tube may partially or completely slip off, which not only interrupts the treatment process but also increases the risk of trauma and infection for the patient when the tube is reinserted. Furthermore, when the intra-abdominal pressure is high, ascites can easily leak out along the gap between the tube and the wound. This not only frequently contaminates dressings and bed units, increasing the frequency of dressing changes and the workload of nursing staff, but the leaked ascites can also irritate the skin around the wound, causing complications such as contact dermatitis and skin ulceration. Summary of the Invention
[0004] This invention addresses the shortcomings of existing technologies by providing an abdominal drainage tube with an inflatable balloon and its usage method. It solves the technical problems of traditional abdominal drainage tubes, such as insecure fixation, easy wound leakage, and inability to adapt to dynamic changes in intra-abdominal pressure, thereby meeting the clinical needs of stable tube fixation, long-term wound leakage prevention, and dynamic pressure adaptation.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: An abdominal drainage tube with an inflatable bladder includes a tube body for draining intra-abdominal fluid, a bladder disposed on the tube body, an inflation assembly connected to the bladder, and an adaptation structure that can adapt to changes in intra-abdominal pressure to maintain the bladder's fit against the intra-abdominal wall. After being inflated by the inflation assembly, the bladder can fit against the intra-abdominal wall to achieve support and fixation of the tube body and prevent leakage from the abdominal wound.
[0006] Preferably, the inflation component includes an inflation tube and an inflation channel. The inflation tube is integrally formed with the tube body and extends along the side wall of the tube body. The inflation channel is opened inside the inflation tube. One end of the inflation channel is connected to the air bag and the other end extends to the external end of the inflation tube. The inflation tube is made of the same medical silicone material as the tube body and extends along the side wall of the tube body to form a dedicated inflation and deflation passage. It does not interfere with the drainage function of the tube body and is suitable for clinical aseptic operation requirements.
[0007] Preferably, the airbag is in a contracted state when it is not inflated, and has a flat structure that is wide at one end and narrow at the other when inflated. The wide end of the airbag is called End 1 and the narrow end is called End 2. The airbag is made of ultra-soft medical silicone material and coated with an anti-adhesion coating. The diameter of End 1 is larger than the diameter of the abdominal wound opening. After inflation, it forms a mechanical clamp structure.
[0008] Preferably, the upper end face of the airbag is provided with multiple anti-slip points. The anti-slip points can bulge synchronously with the airbag as it is inflated and are integrated with the airbag. The anti-slip points are integrated hemispherical protrusions that expand synchronously with inflation. The flat structure increases the contact area with the inner wall of the abdominal cavity. The anti-slip points enhance the friction. The dual effect improves the sealing and seepage prevention effect and the stability of the tube body, preventing displacement and slippage.
[0009] Preferably, the adapter structure includes a pressure sensor disposed inside the airbag, the external wiring of the sensor is inserted into the inflation channel and led out from one side of the inflation tube, the connection between the external wiring and the inflation channel is sealed, the sensor is embedded in the middle layer of the airbag wall, adopts a micro-thin film design, and the external wiring is a medical-grade shielded wire.
[0010] Preferably, the adapter structure further includes a processing device connected to the sensor and an inflation device connected to the air inlet end of the inflation tube. The inflation device is connected to the processing device and can regulate the pressure of the airbag according to the monitoring data of the sensor. The inflation device is a miniature electric air pump, which can realize micro-inflation or depressurization. Together with the pressure threshold built into the processing device, a closed-loop regulation is formed to ensure that the pressure is maintained within the optimal fit range.
[0011] A method for using an abdominal drainage tube with an inflatable balloon includes the following core steps: The tube is inserted into the abdominal cavity through the abdominal incision, and the airbag enters the abdominal cavity simultaneously. Inflation of the air bladder with an inflation component allows the air bladder to adhere to the abdominal cavity wall, thus securing the tube and preventing wound leakage.
[0012] Preferably, after the inflation step is completed, the pressure sensor inside the airbag is activated to monitor the contact pressure between the airbag and the abdominal cavity wall in real time and transmit the data to the processing device. The processing device displays the pressure data, preset thresholds and working status in real time through the display module. The sensor continuously transmits data to ensure timely capture of pressure changes.
[0013] Preferably, after receiving the pressure data, if the processing device determines that the contact pressure is lower than a preset threshold, it will trigger the inflation device to add a small amount of air to the airbag. This adjustment is adapted to the scenario of decreased intra-abdominal pressure and abdominal wall retraction during ascites drainage. By adding a small amount of air to fill the gap, the pressure is restored to the optimal fit range, ensuring the effectiveness of sealing throughout the drainage process.
[0014] Preferably, after the airbag is inflated, the anti-slip point at one end of the airbag is in close contact with the inner wall of the abdominal cavity, which improves the stability of the fit. The anti-slip point protrudes synchronously with the inflation of the airbag and fits tightly with the inner wall of the abdominal cavity, effectively resisting external forces such as changes in body position and flow of ascites, and reducing the risk of tube slippage.
[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes an integrated structure of the tube body and the inflation tube, combined with a flat inflation balloon with anti-slip points. This structure allows for uniform contact with the abdominal cavity wall, forming a mechanical clamp and friction fixation to prevent tube displacement and slippage. Simultaneously, it seals the wound gap to prevent ascites leakage, solving the problems of poor fixation and leakage associated with traditional drainage tubes. Furthermore, the pressure sensor, processing equipment, and inflation equipment work in tandem to provide support for dynamic control of the balloon pressure, adapting to changes in intra-abdominal pressure and the entire drainage process. It can also automatically replenish air when the pressure falls below a threshold, adapting to different expansion and fit requirements, effectively improving the safety, convenience, and adaptability of abdominal drainage surgery. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view at point A in the middle; Figure 3 This is a cross-sectional view of the tube body of the present invention; Figure 4 For the present invention Figure 2 Enlarged view at point B; Figure 5 This is a control flow view of the present invention.
[0018] Drawing number explanation: 1. Tube body; 2. Inflation tube; 21. Inflation channel; 3. Airbag; 31. End 1; 32. End 2; 33. Anti-slip point; 4. Sensor; 5. Processing equipment; 6. Inflation equipment. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings.
[0020] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.
[0021] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.
[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.
[0023] Example: Please see Figure 1-5 An abdominal drainage tube with an inflatable bladder includes a tube body 1 for draining intra-abdominal fluid, a bladder 3 disposed on the tube body 1, an inflation assembly connected to the bladder 3, and an adaptation structure that can adapt to changes in intra-abdominal pressure to maintain the bladder 3's fit against the intra-abdominal wall. After the bladder 3 is inflated by the inflation assembly, it can fit against the intra-abdominal wall to achieve support and fixation of the tube body 1 and prevent leakage from the abdominal wound.
[0024] The tube body 1 is used to drain intra-abdominal fluid. It is made of medical-grade high-elasticity silicone material, which has good biocompatibility and flexibility, avoiding damage to intra-abdominal organs and peritoneum. The external section of the tube body 1, located outside the patient's body, is equipped with a drainage interface for connecting an external drainage bag.
[0025] The air bladder 3 is positioned at the junction of the intra-abdominal segment and the abdominal wall penetration segment of the tube body 1. It is inserted into the abdominal cavity simultaneously with the tube body 1. The air bladder 3 is made of ultra-soft medical silicone material and coated with a medical anti-adhesion coating to reduce the risk of adhesion to the peritoneum. When the air bladder 3 is not inflated, it is in a contracted state, which makes it easy to pass through the abdominal wound with the tube body 1. When inflated, it has a flat structure that is wide at one end and narrow at the other end, which can increase the contact area with the surface of the intra-abdominal wall and improve the sealing and fixation effect. The wide end of the airbag 3 is end 1 31, and the narrow end is end 2 32. The end face of end 1 31 is provided with multiple anti-slip points 33 on the side that fits against the inner wall of the abdominal cavity. The anti-slip points 33 are hemispherical protrusions and are an integral structure with the airbag 3. They protrude synchronously with the inflation of the airbag 3, which can increase the contact friction between the airbag 3 and the inner surface of the peritoneum, prevent the airbag 3 from shifting, and further improve the fit stability.
[0026] The inflation component is connected to the airbag 3 and is used to inflate and deflate the airbag 3. It includes an inflation tube 2 and an inflation channel 21. The inflation tube 2 and the tube body 1 are integrally molded and are made of the same medical silicone material as the tube body 1. The inflation tube 2 extends along the side wall of the tube body 1. The inflation channel 21 is opened inside the inflation tube 2. One end is connected to the inside of the airbag 3, and the other end extends to the external end of the inflation tube 2, forming an independent inflation and deflation passage to avoid interference with the drainage channel.
[0027] The adapter structure includes a sensor 4, a processing device 5, and an inflation device 6. The sensor 4 is located inside the airbag 3, specifically embedded in the middle layer of the airbag 3 wall. When in use, it adopts a miniature thin-film pressure sensor 4 to monitor the contact pressure between the airbag 3 and the abdominal cavity wall in real time. The external wiring of the sensor 4 is a medical-grade shielded wire, which is run through the inflation channel 21 and led out from the air inlet end of the inflation tube 2. The connection between the external wiring and the inflation channel 21 is sealed with medical sealant to prevent gas leakage.
[0028] The processing device 5 is an external portable monitoring terminal, including a data receiving module, a data processing module, a display module, and an alarm module. The data receiving module is electrically connected to the external wiring of the pressure sensor 4 and is used to receive the pressure data transmitted by the sensor 4. The data processing module has built-in preset pressure thresholds, including the optimal pressure range for the airbag 3 to fit against the abdominal wall, the air replenishment trigger threshold, and the upper pressure limit threshold. The data processing module performs real-time analysis on the received pressure data. The display module is an LCD screen used to display the real-time pressure value, preset thresholds, and device operating status. The alarm module is an audible and visual alarm device that issues an audible and visual alert when the pressure data is abnormal.
[0029] The inflation device 6 is a miniature electric air pump that is detachably and sealed to the air inlet end of the inflation tube 2. It is used to inflate the airbag 3. The inflation device 6 is linked with the processing device 5 through a wire or wireless signal and receives the control command of the processing device 5. It can realize micro-inflation or depressurization to ensure stable pressure adjustment and avoid damage to abdominal tissue.
[0030] Based on the above-mentioned abdominal drainage tube, the present invention also provides a method of using it, including the following steps: The patient is positioned appropriately. The abdominal wound area is routinely disinfected and covered with a sterile drape. Holding the external segment of tube 1, the intraperitoneal segment of tube 1 is slowly inserted into the abdominal cavity through the abdominal wound. Ensure that the balloon 3 enters the abdominal cavity simultaneously with tube 1, and that the balloon 3 is positioned inside the abdominal cavity near the inner side of the wound to avoid the balloon 3 compressing the abdominal organs. The insertion depth of tube 1 is adjusted so that the drainage side hole of tube 1 is completely located in the fluid accumulation area of the abdominal cavity, with the drainage interface facing the lower part of the patient's body for easy connection of the drainage bag.
[0031] The processing device 5 sends an inflation command to start the inflation device 6 and inflate the airbag 3. During the inflation process, the display module of the processing device 5 is observed in real time. When the pressure data reaches the preset optimal fitting pressure range, the processing device 5 sends a stop inflation command and the inflation device 6 is turned off. After inflation, the air bladder 3 becomes flat, and the end face of the end 31 fits tightly against the inner wall of the abdominal cavity, sealing the gap between the tube body 1 and the abdominal wound to prevent wound leakage. At the same time, the diameter of the end 31 of the air bladder 3 is larger than the diameter of the abdominal wound, forming a mechanical clamping structure. Combined with the friction of the anti-slip point 33, it can stably fix the tube body 1 and prevent the tube body 1 from shifting or slipping. Confirm the fixation and anti-seepage effect of the airbag 3, observe whether there is seepage around the abdominal wound, gently pull the outer section of the tube 1, feel the fixation resistance, if there is no loosening, it indicates that the fixation is effective, connect the drainage interface of the tube 1 to the external drainage bag, turn on the drainage switch, and start the drainage of intra-abdominal fluid. During the drainage process, the pressure sensor 4 monitors the contact pressure between the airbag 3 and the abdominal wall in real time and continuously transmits data to the treatment device 5. The display module of the treatment device 5 continuously displays the real-time pressure value. As the ascites is gradually drained, the intra-abdominal pressure decreases and the abdominal wall tissue retracts. When the treatment device 5 detects that the pressure data is lower than the preset air replenishment trigger threshold, it automatically sends a micro-air replenishment command to the inflation device 6. After receiving the command, the inflation device 6 starts and replenishes a micro-air into the airbag 3. During the air replenishment process, the sensor 4 provides real-time feedback of pressure data. When the pressure returns to the optimal fitting pressure range, the treatment device 5 sends a stop air replenishment command, and the inflation device 6 shuts down, completing the adaptive air replenishment and maintaining the anti-leakage and fixation effect. If the processing device 5 detects that the pressure data is higher than the preset pressure upper limit threshold, it indicates that the pressure of the airbag 3 is too high and may compress the peritoneum or internal organs. The processing device 5 controls the inflation device 6 to open the pressure relief valve, slightly reducing the pressure to a safe range, and issues an audible and visual alert through the alarm module to remind medical staff to check the position of the airbag 3. When the intra-abdominal fluid drainage is completed, or after examination confirms that no further drainage is needed, prepare to remove the tube, close the drainage switch, disconnect the drainage interface between the drainage bag and the tube body 1, send a pressure relief command through the processing device 5, and the inflation device 6 opens the pressure relief valve to release the gas in the airbag 3. After the processing device 5 displays that the pressure data has dropped to the fully contracted state of the airbag 3, close the inflation device 6, hold the external section of the tube body 1, and slowly and evenly pull the tube body 1 out of the abdominal wound to avoid rapid traction that may cause tissue damage. After removing the tube, perform routine disinfection and bandaging of the abdominal wound, and dispose of the discarded drainage tube and related equipment.
[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.
Claims
1. An abdominal drainage tube with an inflatable balloon, characterized in that The application relates to a tube body (1) for draining liquid in an abdominal cavity, a gas bag (3) arranged on the tube body (1), a gas filling assembly connected with the gas bag (3) and an adaptive structure capable of adapting to pressure change in the abdominal cavity to maintain the effect of the gas bag (3) adhering to the inner wall of the abdominal cavity.
2. An abdominal drainage tube with an inflatable balloon according to claim 1, wherein, The gas filling assembly comprises a gas filling pipe (2) and a gas filling channel (21), the gas filling pipe (2) is integrally formed with the tube body (1) and extends along the side wall of the tube body (1), and the gas filling channel (21) is arranged in the gas filling pipe (2) and is connected with the gas bag (3) at one end and extends to the outer end of the gas filling pipe (2) at the other end.
3. The abdominal drainage tube with an inflatable balloon of claim 1, wherein, The gas bag (3) is in a contracted state when not inflated and is in a flat structure with one end wide and the other end narrow after inflation.
4. A peritoneal drainage tube with an inflatable balloon according to claim 3, wherein A plurality of anti-skid points (33) are arranged on the end face of the end one (31) of the gas bag (3), the anti-skid points (33) are capable of being protruded synchronously with inflation of the gas bag (3) and are integrated with the gas bag (3).
5. The abdominal drainage tube with an inflatable balloon of claim 1, wherein, The adaptive structure comprises a sensor (4) arranged in the gas bag (3), the external connecting line of the sensor (4) is arranged in the gas filling channel (21) and is led out from one side of the gas filling pipe (2), and the junction of the external connecting line and the gas filling channel (21) is sealed.
6. A peritoneal drainage tube with an inflatable balloon according to claim 5, wherein The adaptive structure further comprises a processing device (5) connected with the sensor (4) and a gas filling device (6) connected with the gas inlet end of the gas filling pipe (2), and the gas filling device (6) is in transmission connection with the processing device (5).
7. A method of using an abdominal drainage tube with an inflatable balloon according to any one of claims 1 to 6, characterized in that, The following core steps are included: The tube body (1) is arranged in the abdominal cavity through an abdominal wound, and the gas bag (3) is simultaneously arranged in the abdominal cavity; The gas bag (3) is inflated through the gas filling assembly, so that the gas bag (3) adheres to the inner wall of the abdominal cavity to realize fixation of the tube body (1) and anti-seepage of the wound.
8. The method of using an abdominal drainage tube with an inflatable balloon of claim 7, wherein, After the inflation step is completed, the pressure sensor (4) in the gas bag (3) is started, the contact pressure between the gas bag (3) and the inner wall of the abdominal cavity is monitored in real time, and data is transmitted to the processing device (5).
9. The method of using an abdominal drainage tube with an inflatable balloon of claim 8, wherein, After the processing device (5) receives the pressure data, if it is determined that the contact pressure is lower than a preset threshold value, the gas filling device (6) is triggered to supplement a small amount of gas to the gas bag (3).
10. The method of using an abdominal drainage tube with an inflatable balloon of claim 7, wherein, After the gas bag (3) is inflated, the anti-skid points (33) of the end one (31) of the gas bag (3) are in close contact with the inner wall of the abdominal cavity, so that the adhesion stability is improved.