A drainage tube for closed chest drainage

Abstract

This utility model discloses a drainage tube for closed thoracic drainage, including a drainage assembly for draining cavity fluid. The drainage assembly includes a drainage tube, and a balloon fixation assembly for fixing the drainage tube is installed in the middle of the drainage tube. The balloon fixation assembly includes an annular balloon sleeve with an annular sealing ring. An inflation line is installed inside the drainage tube, and the outlet end of the inflation line is connected to the annular balloon sleeve. The outlet end of the inflation line is also connected to one end of an indicator balloon. A one-way inflation valve is fixedly installed at the other end of the indicator balloon. A suture fixation ring is provided on the outside of the drainage tube for installation. A clamping fixation assembly for fixing the drainage assembly is detachably installed on one side of the balloon fixation assembly. The distal annular balloon sleeve is inflated by connecting a syringe to the one-way inflation valve, ensuring that the annular balloon sleeve can remain inflated to fix the drainage tube. An external suture fixation device prevents the drainage tube from shifting due to patient movement or other reasons.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of medical device technology, and more specifically, relate to a drainage tube for closed thoracic drainage. Background Technology

[0002] The pleural cavity is a closed, potential space formed by the transition of the visceral and parietal pleura at the root of the lung. It consists of the visceral pleura adhering to the lung surface and the parietal pleura adhering to the inner wall of the thoracic cavity. There are two pleural cavities, one on each side, which are not interconnected. The cavity contains no gas, only a small amount of serous fluid, which reduces friction during respiration. The cavity is under negative pressure, which is conducive to lung expansion and the return of venous blood and lymph. Pneumothorax is caused by air in the pleural cavity; hemothorax is caused by blood in the pleural cavity; and effusion is caused by fluid in the pleural cavity. Pneumothorax, hemothorax, or effusion caused by any reason will seriously affect the patient's respiratory function to a certain extent. Depending on the cause of the pleural effusion, hemothorax, or effusion, the selective application of closed thoracic drainage has become an important way to treat the disease.

[0003] Traditional suture fixation relies on the friction between the suture and the chest wall tissue, but the elasticity of the chest wall skin, the thickness of subcutaneous fat, and the patient's coughing, turning over, and other activities may weaken the fixation effect.

[0004] Existing chest drainage tubes are prone to blockage at the insertion port of the silicone tube during drainage. When the drainage tube shifts, the depth cannot be directly and dynamically adjusted, which may delay the drainage of pleural effusion and lead to complications such as atelectasis and infection. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a drainage tube for closed thoracic drainage, comprising a drainage assembly for draining cavity fluid. The drainage assembly includes a drainage tube with a blunt groove at its front end. A cuff fixing assembly for securing the drainage tube is installed in the middle of the drainage tube. The cuff fixing assembly includes an annular cuff sleeve, an inflation tubing, an indicator balloon, and a one-way inflation valve. The annular cuff sleeve forms an annular sealing ring and covers the outer wall of the drainage tube. The inflation tubing is installed through the interior of the drainage tube, with its outlet end connected to the annular cuff sleeve. The outlet end of the inflation tubing is also connected to one end of the indicator balloon. The one-way inflation valve is fixedly installed at the other end of the indicator balloon. A suture fixing ring is provided on the outside of the drainage tube for fitting and installation. A clamping fixing assembly for securing the drainage assembly is detachably installed on one side of the cuff fixing assembly.

[0006] Preferably, the front part of the drainage tube has several sets of drainage side holes on both sides, and the outer wall of the front surface of the drainage tube is provided with scale lines.

[0007] Preferably, the clamping and fixing assembly includes a lower clamping seat, an upper clamping seat, a rotating shaft, a spring, and a suction cup. The lower clamping seat and the upper clamping seat are symmetrically installed. The inner wall of the lower clamping seat is provided with a lower semi-circular washer, and the inner wall of the upper clamping seat is provided with an upper semi-circular washer. The lower semi-circular washer and the anti-slip protrusion are clamped and installed on the outer wall of the drainage tube. The rotating shaft is movably installed between the lower clamping seat and the upper clamping seat. The spring is sleeved and installed in the middle of the rotating shaft. The suction cup is fixedly installed at the bottom of the lower clamping seat.

[0008] Preferably, the surface of the suture fixing ring is provided with a plurality of suture holes.

[0009] Preferably, the top surface of the upper clamping seat is fixedly equipped with anti-slip protrusions.

[0010] Preferably, the diameter of the annular airbag sleeve is 1.5 cm.

[0011] Preferably, the scale lines are in units of one centimeter, and the scale size is twenty centimeters.

[0012] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0013] (1) This utility model completes the inflation of the distal annular balloon by connecting the syringe to the one-way inflation valve. The operation is simple and convenient. The one-way pressure valve design on the guide annular balloon ensures that the air will not leak and that the annular balloon can be kept in an inflated state to effectively fix the drainage tube. The indicator balloon is connected to the annular balloon through the inflation line, which can inflate the annular balloon and monitor the pressure of the annular balloon. Medical staff can intuitively understand the pressure state inside the balloon by observing the shape changes of the indicator balloon or using a special pressure monitoring device. The drainage tube has an external suture fixation ring that can be put in and taken out at any time. The ring shape has multiple holes, which makes the suture fixation device flexible and adjustable, making it convenient for medical staff to operate according to the actual situation. If it is necessary to fix it again after the tube is placed, the external suture fixation device can be passed through the drainage tube and sutured to the skin at the puncture site for fixation. This provides secondary fixation for the drainage tube, which can further improve the stability of the drainage tube and prevent the drainage tube from shifting due to patient movement, thus ensuring smooth drainage.

[0014] (2) This utility model uses a multi-point contact design between the lower semi-circular washer, the upper semi-circular washer, and the anti-slip protrusion and the drainage tube to make the clamping force distribution more uniform, which can effectively fix the drainage tube and prevent it from shifting or falling off during the drainage process, thus ensuring the smooth progress of the drainage work. By using a drainage tube with scale lines, the problem of the drainage tube being inserted too deep or too shallow can be avoided. The suture hole is opened around the surface of the suture fixation ring. This circumferential distribution method allows the suture fixation ring to be operated from multiple directions when suturing and fixing with the skin and surrounding tissues. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present utility model;

[0016] Figure 2 This is a structural diagram of the drainage component of this utility model;

[0017] Figure 3 This is a structural diagram of the airbag fixing component of this utility model;

[0018] Figure 4 This is a structural diagram of the suture fixing ring of this utility model;

[0019] Figure 5 This is a structural diagram of the clamping and fixing component of this utility model.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Drainage assembly; 11. Drainage tube; 111. Blunt groove; 112. Drainage side hole; 113. Scale line; 2. Airbag fixing assembly; 21. Annular airbag sleeve; 22. Inflation tubing; 23. Indicator balloon; 24. One-way inflation valve; 3. Suture fixing ring; 31. Suture hole; 4. Clamping fixing assembly; 41. Lower clamping seat; 411. Lower semi-circular washer; 42. Upper clamping seat; 421. Upper semi-circular washer; 422. Anti-slip protrusion; 43. Rotating shaft; 44. Spring; 45. Suction cup. Detailed Implementation

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figures 1-5 As shown in this embodiment of the present invention, a drainage tube for closed thoracic drainage includes a drainage assembly 1 for draining cavity fluid. The drainage assembly 1 includes a drainage tube 11, the front end of which has a blunt groove 111. The front opening is blunt, which can reduce the resistance during tube insertion and reduce damage to lung tissue during insertion. A cuff fixation assembly 2 for fixing the drainage tube 11 is installed in the middle of the drainage tube 11. The cuff fixation assembly 2 includes a ring-shaped cuff sleeve 21, an inflation line 22, an indicator balloon 23, and a one-way inflation mechanism. The valve 24 and the annular airbag sleeve 21 form an annular sealing ring and cover the outer wall of the drainage tube 11. The inflation line 22 is installed inside the drainage tube 11. The air outlet of the inflation line 22 is connected to the annular airbag sleeve 21. The air outlet of the inflation line 22 is installed through one end of the indicator balloon 23. The one-way inflation valve 24 is fixedly installed at the other end of the indicator balloon 23. A suture fixing ring 3 is provided on the outside of the drainage tube 11 for sleeve installation. A clamping fixing component 4 for fixing the drainage component 1 is detachably installed on one side of the airbag fixing component 2.

[0026] In this implementation plan, the operator holds the drainage tube 11, aligns one end of the blunt groove 111 at the puncture point, and slowly inserts it into the pleural cavity. Once the drainage tube 11 has reached a certain depth in the pleural cavity, a small amount of pleural effusion can be aspirated for examination to confirm the correct positioning of the drainage tube 11. The drainage tube 11 is made of medical-grade silicone. Afterwards, inflation is performed by connecting a syringe to the one-way inflation valve 24 and slowly inflating the annular balloon sleeve 21. During inflation, the degree of inflation of the indicator balloon 23 is observed, and adjustments are made according to the patient's specific condition. The inflation volume is controlled to ensure that the air bag fits tightly against the inner wall of the chest cavity, and the drainage tube 11 is fixed. The suture fixing ring 3 is fixed to the patient's chest wall by sutures. The clamping fixing component 4 is installed on one side of the air bag fixing component 2 to clamp and fix the drainage tube 11 in a suitable position, further enhancing the stability of the drainage tube 11. The body of the drainage tube 11 is made of medical silicone material. Medical silicone has good biocompatibility, flexibility and corrosion resistance, which can reduce irritation and damage to the patient's tissues, while ensuring the service life of the drainage tube 11.

[0027] The drainage tube 11 has a 1.5cm diameter annular balloon cuff 21 in the middle. After successful puncture of the drainage tube 11, it is placed into the chest wall to fix the drainage tube 11 and prevent displacement. The annular balloon cuff 21 is made of a thin layer of silicone, which is soft and has good extensibility. It forms a ring-shaped sealing ring covering the outer wall of the drainage tube 11. This design ensures that the annular balloon cuff 21 fits tightly with the drainage tube 11 while reducing pressure and discomfort on the patient's chest wall. The main function of the annular balloon cuff 21 is to fix the drainage tube 11 and prevent it from shifting within the pleural cavity. After successful puncture, the circular balloon cuff 21 is placed into the chest wall. Inflation causes the cuff 21 to expand and fit tightly against the chest cavity wall, thus fixing the position of the drainage tube 11 and ensuring its stable drainage function. The distal circular balloon cuff 21 is inflated by connecting a syringe to the one-way inflation valve 24. The operation is simple and convenient. The one-way pressure valve design on the circular balloon cuff 21 prevents air leakage, ensuring the cuff 21 remains continuously inflated, effectively fixing the drainage tube 11. The balloon 23 is inflated... The tubing 22 is connected to the annular balloon sleeve 21, allowing for inflation of the annular balloon sleeve 21 and monitoring of its pressure. Medical staff can visually understand the pressure state inside the balloon by observing the morphological changes of the indicator balloon 23 or using specialized pressure monitoring equipment. The drainage tube 11 has an external suture fixation ring 3 that can be easily inserted and removed. The ring shape has multiple holes, giving the suture fixation device a degree of flexibility and adjustability, facilitating operation by medical staff according to the actual situation. If re-fixation is required after tube placement, the external suture fixation device can be removed... The drainage tube 11 is passed through and sutured to the skin at the puncture site for fixation. This secondary fixation of the drainage tube 11 further improves its stability and prevents it from shifting due to patient activity, ensuring smooth drainage. The exposed portion of the drainage tube 11 needs to be fixed to the body surface with adhesive tape or bandage. Medical staff can choose to add a pad under the drainage tube 11 as needed to distribute pressure and reduce local pressure. The pad can increase the contact area between the fixation material and the skin, preventing the drainage tube 11 from shifting or dislodging due to patient activity.

[0028] Specifically, several sets of drainage side holes 112 are opened on both sides of the front part of the drainage tube 11, and scale lines 113 are provided on the outer wall of the front surface of the drainage tube 11.

[0029] like Figure 2In this embodiment, the several sets of drainage side holes 112 opened on both sides of the front part of the drainage tube 11 change the traditional single-opening drainage method. Multiple drainage side holes 112 drain effusion, gas, etc. in the pleural cavity from different angles, which is equivalent to increasing the drainage "entry". In practical applications, this multi-directional drainage design can make the effusion in the pleural cavity drain more quickly and fully. For example, when there are multiple accumulation areas in the pleural cavity, the drainage side holes 112 at different positions can play a role at the same time, gathering the effusion into the drainage tube 11, which greatly shortens the drainage time and improves the drainage efficiency. Efficiency is ensured by the graduation lines 113 on the outer wall of the front surface of the drainage tube 11, which provide medical staff with an intuitive reference standard. During the insertion process, medical staff can accurately determine the insertion depth of the drainage tube 11 based on the graduation lines 113. By using the drainage tube 11 with graduation lines 113, the problem of inserting the drainage tube 11 too deep or too shallow can be avoided. Insertion that is too deep may damage important organs in the chest cavity, such as the heart and major blood vessels; insertion that is too shallow may not be able to reach an effective drainage position. Precise control of the insertion depth greatly improves the safety of the operation and reduces the occurrence of complications.

[0030] Specifically, the clamping and fixing assembly 4 includes a lower clamping seat 41, an upper clamping seat 42, a rotating shaft 43, a spring 44, and a suction cup 45. The lower clamping seat 41 and the upper clamping seat 42 are symmetrically installed. The inner wall of the lower clamping seat 41 is provided with a lower semi-circular washer 411, and the inner wall of the upper clamping seat 42 is provided with an upper semi-circular washer 421. The lower semi-circular washer 411 and the anti-slip protrusion 422 are clamped and installed on the outer wall of the drainage tube 11. The rotating shaft 43 is movably installed between the lower clamping seat 41 and the upper clamping seat 42. The spring 44 is sleeved and installed in the middle of the rotating shaft 43. The suction cup 45 is fixedly installed at the bottom of the lower clamping seat 41.

[0031] In this embodiment, the lower clamping seat 41 and the upper clamping seat 42 are symmetrically installed. This design allows them to form a relatively uniform clamping space when closed, resulting in more stable clamping of the drainage tube 11. A lower semi-circular washer 411 is provided on the inner wall of the lower clamping seat 41, and an upper semi-circular washer 421 is provided on the inner wall of the upper clamping seat 42. When the clamping seats are closed, the lower semi-circular washer 411 and the upper semi-circular washer 421 work together to tightly fit against the outer wall of the drainage tube 11, increasing the clamping stability. The increased contact area of ​​the drainage tube 11 improves clamping stability. Anti-slip protrusions 422 are provided on the upper semi-circular washer 421, further increasing the friction between the anti-slip protrusions 422 and the drainage tube 11, preventing the drainage tube 11 from sliding or falling off during clamping and ensuring its fixed position. The rotating shaft 43 is movably mounted between the lower clamping seat 41 and the upper clamping seat 42, allowing the upper clamping seat 42 to rotate relative to the lower clamping seat 41 around the rotating shaft 43, facilitating... The clamping assembly opens and closes via a spring 44, which is fitted onto the center of the rotating shaft 43. The spring 44 has an elastic restoring force. When the upper clamping seat 42 rotates around the shaft 43 to open, the spring 44 is stretched. After releasing the upper clamping seat 42, the elastic restoring force of the spring 44 causes the upper clamping seat 42 to automatically close, tightly engaging with the lower clamping seat 41 to clamp and fix the drainage tube 11. A suction cup 45 is fixedly installed at the bottom of the lower clamping seat 41. The suction cup 45 can adhere to the patient's skin, providing a stable support point for the clamping and fixing assembly 4, preventing movement or shaking during drainage, and further ensuring the stability of the drainage tube 11. The multi-point contact design of the lower semi-circular washer 411, upper semi-circular washer 421, and anti-slip protrusion 422 with the drainage tube 11 makes the clamping force distribution more uniform, effectively fixing the drainage tube 11 and preventing displacement or detachment during drainage, ensuring smooth drainage.

[0032] Specifically, the surface of the suture fixing ring 3 is provided with a number of suture holes 31.

[0033] like Figure 4 In this embodiment, suture holes 31 are arranged around the surface of the suture fixation ring 3. This circumferential distribution allows the suture fixation ring 3 to be operated from multiple directions when suturing and fixing with the skin and surrounding tissues. When the suture fixation ring 3 is used to fix the drainage tube 11, the surrounding suture holes 31 allow the doctor to select the appropriate suturing direction and angle according to the patient's specific condition, in order to adapt to the anatomical structure of different parts and the position requirements of the drainage tube 11. The presence of several sets of suture holes 31 increases the number of suture points. Four suture points can provide stronger fixation force, making the connection between the suture fixation ring 3 and the surrounding tissue more secure.

[0034] Specifically, anti-slip protrusions 422 are fixedly installed on the top surface of the upper clamping seat 42.

[0035] In this embodiment, when the upper clamping seat 42 and the lower clamping seat 41 are closed, the anti-slip protrusion 422 and the protrusion on the outer wall of the drainage tube 11 can adjust the pressure distribution and avoid local stress concentration that could cause the drainage tube 11 to deform.

[0036] Specifically, the diameter of the annular airbag sleeve 21 is 1.5cm.

[0037] In this embodiment, the 1.5cm diameter airbag sleeve is suitable for drainage tubes 11 with an inner diameter ≤1.2cm. This size is in line with the outer diameter range of adult chest drainage tubes 11 (10-14Fr) and some abdominal drainage tubes 11 (12-16Fr). The ring structure makes the pressure evenly distributed and avoids local tissue compression necrosis.

[0038] Specifically, scale line 113 is in units of one centimeter, and the scale size is twenty centimeters.

[0039] In this embodiment, the scale line 113 serves as a visual reference, which can standardize the operating techniques of medical staff and reduce human error. The total length of the scale is 20 centimeters, covering the commonly used measurement range in clinical practice, such as the chest drainage depth of 10-18cm, which meets the needs of most surgeries.

[0040] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A drainage tube for closed thoracic drainage, characterized in that: The system includes a drainage assembly (1) for draining fluid from a cavity. The drainage assembly (1) includes a drainage tube (11), the front end of which has a blunt groove (111). An airbag fixing assembly (2) for fixing the drainage tube (11) is installed in the middle of the drainage tube (11). The airbag fixing assembly (2) includes an annular airbag sleeve (21), an inflation line (22), an indicator balloon (23), and a one-way inflation valve (24). The annular airbag sleeve (21) has an annular sealing ring and covers the outer wall of the drainage tube (11). An inflation tube (22) is installed inside the drainage tube (11). The air outlet of the inflation tube (22) is connected to the annular airbag sleeve (21). The air outlet of the inflation tube (22) is installed through one end of the indicator balloon (23). The one-way inflation valve (24) is fixedly installed at the other end of the indicator balloon (23). A suture fixing ring (3) is provided on the outside of the drainage tube (11) for sleeve installation. A clamping fixing component (4) for fixing the drainage component (1) is detachably installed on one side of the airbag fixing component (2).

2. The drainage tube for closed thoracic drainage according to claim 1, characterized in that: The drainage tube (11) has several sets of drainage side holes (112) on both sides of its front part, and the outer wall of the front surface of the drainage tube (11) is provided with scale lines (113).

3. The drainage tube for closed thoracic drainage according to claim 1, characterized in that: The clamping and fixing assembly (4) includes a lower clamping seat (41), an upper clamping seat (42), a rotating shaft (43), a spring (44), and a suction cup (45). The lower clamping seat (41) and the upper clamping seat (42) are symmetrically installed. The inner wall of the lower clamping seat (41) is provided with a lower semi-circular washer (411), and the inner wall of the upper clamping seat (42) is provided with an upper semi-circular washer (421). The lower semi-circular washer (411) and the anti-slip protrusion (422) are clamped and installed on the outer wall of the drainage tube (11). The rotating shaft (43) is movably installed between the lower clamping seat (41) and the upper clamping seat (42). The spring (44) is sleeved and installed in the middle of the rotating shaft (43). The suction cup (45) is fixedly installed at the bottom of the lower clamping seat (41).

4. The drainage tube for closed thoracic drainage according to claim 1, characterized in that: The surface of the suture fixing ring (3) is provided with a number of suture holes (31).

5. A drainage tube for closed thoracic drainage according to claim 3, characterized in that: The top surface of the upper clamping seat (42) is fixedly equipped with anti-slip protrusions (422).

6. The drainage tube for closed thoracic drainage according to claim 1, characterized in that: The diameter of the annular airbag sleeve (21) is 1.5cm.

7. A drainage tube for closed thoracic drainage according to claim 2, characterized in that: The scale line (113) is in units of one centimeter, and the scale size is twenty centimeters.

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