Closed chest drainage tube

Abstract

The utility model relates to a closed thoracic drainage tube, it includes the tubulature, the outer wall of the tail end of tubulature is sequentially provided with first annular groove and second annular groove, the first annular groove is covered with first air bag, the second annular groove is covered with second air bag, the first air bag and second air bag are communicated through the air guide pipe of the lumen of tubulature, the wall thickness of first air bag is greater than the wall thickness of second air bag, the front end movable sleeve of tubulature is provided with extrusion ring, the utility model through the first air bag of surrounding tubulature carries out the compression hemostasis to the puncture wound around, avoids the phenomenon that the pipeline leaks gas or leaks liquid, reduces the discomfort of patient, through the inflation of first air bag when extruding second air bag, reduced the operation step of thoracic drainage tube setting and pulling out, improved the efficiency and convenience, through setting the fixed ring, can paste fixed tubulature part outside patient's body, convenient drainage, need not suture, the operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a closed chest drainage tube. Background Technology

[0002] Thoracic drainage is a common clinical treatment widely used for lung diseases, traumatic pleural effusion, pneumothorax, hemothorax, and other conditions. Traditional chest drainage tubes are primarily used to drain effusion, gas, and other abnormal substances from the pleural cavity to alleviate symptoms and promote lung recovery. A drainage tube generally consists of an external drainage device, a connecting tube, and the portion inserted into the chest cavity. Depending on the drainage method, thoracic drainage can be divided into open drainage and closed drainage. Closed drainage, in particular, has been widely adopted in recent years due to its ability to effectively prevent outside air from entering the pleural cavity, reducing the risk of infection, and its superior therapeutic effect.

[0003] However, current methods for fixing closed chest drainage tubes are still cumbersome. After inserting the tube, medical staff need to inflate the balloon on the tube using an air pump to fix it to the patient's internal wound. Then, they need to cut the tape using the E-cut method, wrap it, peel off the release paper, and fix it to achieve external fixation of the wound. This process is not only numerous and complex, but also inconvenient for drainage, insufficient for hemostasis, and requires suturing, demanding a high level of skill from medical staff. If the medical staff are not skilled, it not only increases the nursing time but may also cause secondary injury and pain to the patient. Utility Model Content

[0004] This invention provides a closed chest drainage tube to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A closed chest drainage tube includes a tube body, the front end of which is connected to a connecting tube, the end port of which is closed and provided with a plurality of drainage holes, the outer wall of the end of which is provided with a first annular groove and a second annular groove in sequence, the first annular groove being covered with a first air bladder, the second annular groove being covered with a second air bladder, the first air bladder and the second air bladder being connected by a duct tube passing through the inner cavity of the tube body, the wall thickness of the first air bladder being greater than the wall thickness of the second air bladder, and a compression ring being movably sleeved at the front end of the tube body.

[0007] Furthermore, the outer wall of the compression ring is connected to a fixing ring via a connector, and the fixing ring is located on the side near the end of the tube. After the intubation is completed, the second balloon rests against the skin surface on the outside of the patient's wound. By pushing the compression ring towards the second balloon, the first balloon inflates and fixes the skin on the inside of the patient's body. The compression ring can also fix the tube on the outside of the patient's body.

[0008] Furthermore, an adhesive portion is provided on the side of the fixing ring facing the end of the tube, and release paper is attached to the adhesive portion. The fixing ring secures the compression ring, thereby securing the tube. The adhesive portion is located away from the wound to avoid secondary damage caused by sticking and peeling off the wound.

[0009] Furthermore, the width of the compression ring is equal to the width of the second airbag. During the compression ring process, the gas in the second airbag is gradually squeezed into the air guide tube and then into the first airbag. After the compression ring completely covers the second airbag, the gas can be completely pushed into the first airbag, avoiding gas residue in the second airbag, which would cause the first airbag to not expand sufficiently and reduce the fixation effect.

[0010] Furthermore, the outer diameter of the inner cavity of the first airbag in the absence of gas is equal to the outer diameter of the tube. When the compression ring does not compress the second airbag, the first airbag is in a deflated state. At this time, the circumference of the outer wall of the deflated first airbag is equal to the outer diameter of the tube, which ensures that the tube can be smoothly implanted into the patient's body.

[0011] Furthermore, the distance between the end of the tube and the first annular groove is not less than 20 cm. The length of the tube inside the body, i.e., the portion of the drainage tube that enters the patient's pleural cavity, is selected based on the patient's pleural effusion and the positioning requirements. Typically, this portion is around 20-30 cm long. Therefore, by customizing tube lengths to suit different clinical conditions, it can be ensured that the drainage tube reaches the site of fluid or gas accumulation.

[0012] Furthermore, the distance between the first annular groove and the second annular groove is 2-4 cm. The part between the first annular groove and the end of the tube is the portion that enters the patient's body, and the part between the first annular groove and the second annular groove is the patient's skin layer. The length of this part of the tube is determined based on factors such as the patient's body size, chest wall thickness, and the insertion point selected during the operation, and is usually 2-4 cm.

[0013] Furthermore, the tube is also equipped with a guidewire to guide its movement, and the guidewire is movably disposed within the tube's lumen. The guidewire assists in ensuring the tube accurately enters the target area during insertion into the patient, preventing misinsertion or deviation. By movably distributing the guidewire within the tube, medical personnel can flexibly control its movement, precisely guiding it to the site of fluid or gas accumulation in the patient's pleural cavity.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses a first airbag surrounding the tube to compress and stop bleeding around the wound, avoiding air or fluid leakage from the tube. It facilitates drainage while ensuring nursing care, eliminates the need for suturing the wound, and reduces patient discomfort.

[0016] 2. This utility model, through the connection of the first and second airbags, allows the first airbag to be inflated when the second airbag is squeezed, reducing the number of steps involved in the installation and removal of the chest drainage tube and improving efficiency and convenience.

[0017] 3. By setting a fixing ring, this utility model can attach and fix the tube part outside the patient's body, reducing the need for medical staff to cut and wrap tape, making the operation convenient and further shortening the nursing time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model in its conventional state;

[0019] Figure 2 This is a schematic diagram of the present invention under the condition of the second airbag being compressed;

[0020] Figure 3 This is a planar perspective view of the present invention;

[0021] Figure labels: 1-tube body, 2-drainage hole, 3-first annular groove, 4-second annular groove, 5-first airbag, 6-second airbag, 7-air guide tube, 8-compression ring, 9-connector, 10-fixing ring. Detailed Implementation

[0022] 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 embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0023] Example 1

[0024] like Figure 1-3As shown, this utility model discloses a closed chest drainage tube, including a tube body 1. The front end of the tube body 1 is connected to a connecting tube. The end port of the tube body 1 is closed and provided with a plurality of drainage holes 2. The outer wall of the end of the tube body 1 is provided with a first annular groove 3 and a second annular groove 4 in sequence. A first air bladder 5 is covered on the first annular groove 3, and a second air bladder 6 is covered on the second annular groove 4. The first air bladder 5 and the second air bladder 6 are connected by a duct tube 7 that passes through the inner cavity of the tube body 1. The wall thickness of the first air bladder 5 is greater than the wall thickness of the second air bladder 6. A compression ring 8 is movably sleeved on the front end of the tube body 1.

[0025] Specifically, according to Laplace's law, the pressure P inside the air bladder is related to the radius of curvature R of the air bladder and the tension T of the air bladder wall as P = 2T / R. This means that a thicker air bladder wall has greater elasticity and a greater degree of stretching per unit area (corresponding to tension T). Simultaneously, a thicker air bladder has a smaller radius R under the same inflation conditions (expands more slowly). A thinner air bladder has thinner walls, less elasticity, and a smaller tension T per unit area. For the same volume of gas, the thinner air bladder has a larger radius R. Due to the higher tension, the thicker air bladder has a higher internal pressure, while the thinner air bladder has a lower internal pressure. When the two air bladders are connected, the gas in the thicker air bladder with higher pressure will flow to the thinner air bladder with lower pressure. During this gas flow, the thinner air bladder continuously expands, its radius R increases, leading to a decrease in internal pressure. The thicker air bladder continuously contracts, and its internal pressure decreases faster (due to the non-linear relationship between tension and radius). Ultimately, the thicker air bladder completely contracts, and all the gas enters the thinner air bladder.

[0026] The outer wall of the compression ring 8 is connected to a fixing ring 10 via a connector 9. The fixing ring 10 is located on the side near the end of the tube 1. Specifically, after the intubation is completed, the second airbag 6 rests against the skin surface on the outside of the patient's wound. By pushing the compression ring 8 towards the second airbag 6, the first airbag 5 inflates and fixes the skin on the inside of the patient's body. The compression ring 8 can fix the tube on the outside of the patient's body.

[0027] The fixing ring 10 has an adhesive part on the side facing the end of the tube body 1, and release paper is attached to the adhesive part. Specifically, in routine nursing care, it is necessary to fix the external tube body 1 of the wound by cutting tape, wrapping it, peeling off the release paper, and fixing it to avoid secondary damage to the wound caused by bending of the tube body 1. In the solution of this application, the compression ring 8 can be fixed by the fixing ring 10, thereby fixing the tube body 1. The adhesive part is away from the wound to avoid secondary damage caused by sticking and tearing the tape.

[0028] The width of the compression ring 8 is equal to the width of the second airbag 6. Specifically, during the pushing of the compression ring 8, the gas in the second airbag 6 is gradually squeezed into the air guide tube 7 and then into the first airbag 5. After the compression ring 8 completely covers the second airbag 6, the gas can be completely pushed into the first airbag 5, avoiding gas residue in the second airbag 6, which would cause the first airbag 5 to not expand sufficiently and reduce the fixation effect.

[0029] The outer diameter of the inner cavity of the first airbag 5 in the absence of gas is equal to the outer diameter of the tube 1. Specifically, when the compression ring 8 does not compress the second airbag 6, the first airbag 5 is in a deflated state. At this time, the circumference of the outer wall of the deflated first airbag 5 is equal to the outer diameter of the tube 1, which ensures that the tube 1 can be successfully implanted into the patient's body.

[0030] The distance between the end of the tube body 1 and the first annular groove 3 is not less than 20 cm. Specifically, the length of the tube inside the patient's chest cavity, i.e., the portion of the drainage tube that enters the patient's chest cavity, is selected based on the patient's pleural effusion and the positioning requirements of the drainage tube. Generally, this portion is about 20-30 cm long. Therefore, by customizing tube body 1 to different lengths and selecting according to different clinical situations, it can be ensured that the drainage tube can reach the site of fluid or gas accumulation.

[0031] The distance between the first annular groove 3 and the second annular groove 4 is 2-4 cm. Specifically, the part between the first annular groove 3 and the end of the tube 1 is the part that enters the patient's body, and the part between the first annular groove 3 and the second annular groove 4 is the patient's skin layer. The length of this part of the tube 1 is determined according to factors such as the patient's body size, chest wall thickness, and the insertion point selected during the operation, and is usually 2-4 cm.

[0032] The tube body 1 is also equipped with a guide wire for guiding its movement. The guide wire is movably disposed within the lumen of the tube body 1. Specifically, the guide wire assists in ensuring that the tube body 1 accurately enters the target area when inserted into the patient's body, avoiding misinsertion or deviation. By movably displacing the guide wire within the tube body 1, medical personnel can flexibly control its movement, precisely guiding it to the site of fluid or gas accumulation in the patient's pleural cavity.

[0033] Example 2

[0034] Based on Example 1, this example proposes a specific implementation process for a closed chest drainage tube.

[0035] The specific implementation principle and process are as follows:

[0036] After inserting the tube 1 into the puncture site, guide it through the guidewire to the area of ​​pleural effusion or gas accumulation until the preset position is reached. Push the compression ring 8 towards the second cuff 6, allowing gas to flow through the air inlet tube 7 into the first cuff 5, causing the second cuff 6 to inflate. The inflated first cuff 5 will fix the patient's inner skin, thus securing the tube 1 within the patient's pleural cavity. After the first cuff 5 inflates and fixes the tube 1, secure the fixing ring 10 around the puncture site, i.e., on the outer skin, using the adhesive part. After fixation, perform routine drainage procedures to ensure that the drainage tube can properly drain the pleural effusion or gas.

[0037] When performing the tube removal operation, first carefully peel off the adhesive joint between the fixing ring 10 and the skin, and slowly pull the squeezing ring 8 backward. At this time, the gas in the first airbag 5 will slowly enter the second airbag 6 until the gas in the first airbag 5 is completely expelled. Then, pull out the tube body 1 to complete the tube removal operation.

[0038] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A closed chest drainage tube, comprising a tube body (1), wherein the front end of the tube body (1) is connected to a connecting tube, and the end port of the tube body (1) is closed and provided with a plurality of drainage holes (2), characterized in that: The outer wall of the end of the tube (1) is provided with a first annular groove (3) and a second annular groove (4) in sequence. The first annular groove (3) is covered with a first airbag (5), and the second annular groove (4) is covered with a second airbag (6). The first airbag (5) and the second airbag (6) are connected by an air guide tube (7) that passes through the inner cavity of the tube (1). The wall thickness of the first airbag (5) is greater than the wall thickness of the second airbag (6). The front end of the tube (1) is movably fitted with a compression ring (8).

2. A closed chest drainage tube according to claim 1, characterized in that: The outer wall of the extrusion ring (8) is connected to a fixing ring (10) via a connector (9), and the fixing ring (10) is located on one side near the end of the tube body (1).

3. A closed chest drainage tube according to claim 2, characterized in that: The fixing ring (10) has an adhesive part on the side facing the end of the tube body (1), and release paper is attached to the adhesive part.

4. A closed chest drainage tube according to claim 1, characterized in that: The width of the compression ring (8) is equal to the width of the second airbag (6).

5. A closed chest drainage tube according to claim 1, characterized in that: The outer diameter of the inner cavity of the first airbag (5) in the absence of gas is equal to the outer diameter of the tube (1).

6. A closed chest drainage tube according to claim 1, characterized in that: The distance between the end of the tube (1) and the first annular groove (3) is not less than 20cm.

7. A closed chest drainage tube according to claim 1, characterized in that: The distance between the first annular groove (3) and the second annular groove (4) is 2-4 cm.

8. A closed chest drainage tube according to claim 1, characterized in that: The tube (1) is also equipped with a guide wire for guiding the movement direction of the tube (1), and the guide wire is movably disposed in the inner cavity of the tube (1).

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