Negative pressure thoracic cavity closed drainage device capable of adjusting air pressure

Abstract

The utility model provides a negative pressure thoracic cavity closed drainage device capable of adjusting air pressure. The negative pressure thoracic cavity closed drainage device comprises a drainage bottle, a drainage tube, a negative pressure air tube and an adjusting tube. A first through hole and a second through hole are formed in the top surface of the drainage bottle; one end of the drainage tube is inserted into the inner cavity from the first through hole and extends below the fluid, and the other end is communicated with the thoracic cavity; one end of the negative-pressure air pipe is communicated with the inner cavity through the second through hole, and the other end is connected with a negative-pressure suction mechanism; a third through hole is formed in the top face of the drainage bottle, and the bottom end of the adjusting pipe enters the inner cavity from the third through hole and extends to the position below the fluid. The adjusting tube is additionally arranged on the drainage bottle, and the depth of the adjusting tube under the water surface is adjusted up and down, so that the effect of effectively adjusting the negative pressure in the drainage bottle is achieved, and on the basis of continuously sucking out gas in the thoracic cavity of a patient with poor lung expansion function and large lung crevasse under the negative pressure and increasing the rescue success rate, the negative pressure in the thoracic cavity of the patient is reduced. And lung injury of the patient caused by overlarge negative pressure in the bottle can be avoided.

Description

[Technical field]

[0001] The utility model relates to the technical field of medical devices, in particular to a negative pressure chest cavity closed drainage device capable of adjusting air pressure. [Background technology]

[0002] Pneumothorax is a disease in which gas enters the pleural cavity, causing the lung tissue to collapse under pressure. It is also often called a collapsed lung. Pneumothorax is generally caused by a rupture between the lung tissue and the chest cavity or an injury to the chest wall, and can be caused by a variety of causes, such as chest injury, underlying lung disease, etc. Pneumothorax is more common in young and middle-aged men with a thin and tall body. Continuous smoking, working in a high-pressure environment, and a family history of pneumothorax are all risk factors.

[0003] In clinical practice, we may encounter refractory pneumothorax. Although ordinary chest closed drainage devices can drain the gas from the chest cavity, they have defects when encountering patients with large pneumothorax, poor lung expansion function, and large lung rupture. This is because ordinary chest closed drainage devices actually have a certain positive pressure drainage, such as the attached Figure 1 The common chest closed drainage device shown includes a drainage box 200, a drainage trachea 201, and a ventilation tube 203. The drainage box 200 is connected to the chest cavity 202 through the drainage trachea 201, and the drainage box 200 is connected to the outside through the ventilation tube 203. Taking the bottom end of the drainage trachea 201 being located 3 cm below the water surface as an example, only when the pressure in the chest cavity 202 is greater than the sum of 1 atmosphere + 3 cm water column pressure, can the gas be compressed to 3 cm below the water surface and discharged to the drainage box 200; when the pressure in the chest cavity 202 is less than the sum of 1 atmosphere + 3 cm water column pressure, the chest cavity 202 cannot discharge the gas at all, which finally leads to death due to ineffective treatment.

[0004] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which led to the emergence of this case. [Contents of the utility model]

[0005] The utility model aims to solve the above technical problems and provides a negative pressure closed chest drainage device with adjustable air pressure. While the negative pressure draws the gas in the chest cavity, the negative pressure in the drainage bottle can be effectively adjusted through an adjusting tube to avoid lung damage caused by excessive negative pressure.

[0006] The present utility model is implemented as follows: A negative pressure closed thoracic drainage device with adjustable air pressure, comprising a drainage bottle, a drainage tube, and a negative pressure trachea; the drainage bottle forms an inner cavity for filling a fluid, and the top surface of the drainage bottle is provided with a first through hole and a second through hole; one end of the drainage tube is inserted into the inner cavity from the first through hole and extends below the fluid, and the other end is used for communicating with the thoracic cavity; one end of the negative pressure trachea communicates with the inner cavity through the second through hole, and the other end is used for connecting a negative pressure suction mechanism; further comprising an adjusting tube, the top surface of the drainage bottle is provided with a third through hole, and the bottom end of the adjusting tube enters the inner cavity from the third through hole and extends below the fluid.

[0007] Further, the length of the bottom end of the adjusting tube extending below the fluid is 5 - 12 cm.

[0008] Further, the top end of the adjusting tube is located outside the drainage bottle and is equipped with a filter air filter element.

[0009] Further, a sealing rubber ring is assembled at the third through hole.

[0010] Further, corresponding scale lines indicating the depth of the bottom end of the adjusting tube extending below the fluid surface are printed on the outer wall of the adjusting tube.

[0011] Further, a sealing assembly for sealing the third through hole is provided outside the drainage bottle.

[0012] Further, a water filling port is provided on the side wall of the drainage bottle, and a sealing cover is provided at the water filling port.

[0013] Further, a fixed water level line is printed outside the drainage bottle.

[0014] Further, the drainage bottle is a transparent drainage bottle made of polyvinyl chloride.

[0015] The advantages of the present utility model are as follows: The negative pressure closed thoracic drainage device with adjustable air pressure is provided with an adjusting tube on the drainage bottle, and the depth of the adjusting tube below the water surface is adjusted up and down, which effectively adjusts the negative pressure in the drainage bottle, so that on the basis of continuously sucking the gas in the patient's thoracic cavity under negative pressure for patients with poor lung inflation function and large lung rupture openings, increasing the rescue success rate, it can also avoid lung damage caused by excessive negative pressure in the bottle to the patient.

Description of the Drawings

[0016] The following further describes the present utility model with reference to the accompanying drawings in conjunction with embodiments.

[0017] Figure 1 It is a structural schematic diagram of a common negative pressure closed thoracic drainage device in the prior art.

[0018] Figure 2It is a schematic structural diagram of a negative pressure closed thoracic drainage device with adjustable air pressure in the present utility model.

[0019] Figure 3 It is a cross-sectional view of a negative pressure closed thoracic drainage device with adjustable air pressure in the present utility model.

[0020] Figure 4 It is a working schematic diagram of a negative pressure closed thoracic drainage device with adjustable air pressure in the first embodiment.

[0021] Figure 5 It is a working schematic diagram of a negative pressure closed thoracic drainage device with adjustable air pressure in the second embodiment.

[0022] Negative pressure closed thoracic drainage device 100, drainage bottle 1, drainage tube 2, negative pressure trachea 3, chest cavity 4, negative pressure suction mechanism 5, regulating tube 6, air filter element 7, sealing rubber ring 8, fixed water level line 9, sealing assembly 10, inner cavity 11, first through hole 12, second through hole 13, third through hole 14, water filling port 15, sealing cover 16.

Detailed implementation manners

[0023] In order to better understand the technical solution of the present utility model, the technical solution of the present utility model will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0024] It should be noted here that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing these implementation manners and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0025] Please refer to Figures 2 to 5As shown in the figure, the present utility model provides a negative pressure closed thoracic drainage device 100 with adjustable air pressure, which includes a drainage bottle 1, a drainage tube 2, a negative pressure trachea 3, and an adjustment tube 6; the drainage bottle 1 forms an inner cavity 11 for filling a fluid, and the top surface of the drainage bottle 1 is provided with a first through hole 12 and a second through hole 13; one end of the drainage tube 2 is inserted into the inner cavity 11 from the first through hole 12 and extends below the fluid, and the other end is used to communicate with the thoracic cavity 4; one end of the negative pressure trachea 3 communicates with the inner cavity 11 through the second through hole 13, and the other end is used to connect to a negative pressure suction mechanism 5; the top surface of the drainage bottle 1 is provided with a third through hole 14, and the bottom end of the adjustment tube 6 enters the inner cavity 11 from the third through hole 14 and extends below the fluid.

[0026] Preferably, the fluid is sterilized normal saline; the negative pressure suction mechanism 5 is an electric suction device, such as Simanfeng YX930D, or directly connected to the hospital central suction system.

[0027] In the negative pressure closed thoracic drainage device 100 with adjustable air pressure of the present utility model, an adjustment tube 6 is added to the drainage bottle 1, and the depth of the adjustment tube 6 below the water surface is adjusted up and down, which effectively adjusts the negative pressure in the drainage bottle 1. Thus, on the basis of continuously sucking the gas in the patient's thoracic cavity under negative pressure for patients with poor lung inflation function and large lung rupture openings, increasing the success rate of rescue, it can also prevent the patient from suffering from lung damage caused by excessive negative pressure in the bottle.

[0028] In the present utility model, the top end of the adjustment tube 6 is located outside the drainage bottle 1 and is equipped with a filter air filter element 7 to filter the outside air and prevent foreign impurities from entering the bottle.

[0029] In the present utility model, a sealing rubber ring 8 is assembled at the third through hole 14. The sealing rubber ring 8 can limit the adjustment tube 6 and prevent the adjustment tube 6 from sliding up and down randomly, and can also increase the sealing performance.

[0030] In the present utility model, corresponding scale lines indicating the depth of the bottom end of the adjustment tube 6 extending below the fluid surface are printed on the outer wall of the adjustment tube 6; scales are engraved on the adjustment tube 6 outside the bottle to correspond to several centimeters below the water level line, and medical staff can move the adjustment tube 6 up and down to adjust the negative pressure.

[0031] In the present utility model, a sealing assembly 10 for sealing the third through hole 14 is provided outside the drainage bottle 1. The sealing assemblies 10 are all silicone plugs. When the patient does not need negative pressure suction, the second through hole 13 is not connected to the negative pressure suction mechanism 5 and is directly communicated with the outside air. The adjustment tube 6 is blocked by the sealing assembly 10, and it can be used as an ordinary thoracic drainage bottle, achieving the effect of dual use of one bottle.

[0032] In the present utility model, a water filling port 15 is provided on the side wall of the drainage bottle 1, and a sealing cover 16 is provided at the water filling port 15. The water filling port 15 is arranged on the side wall of the drainage bottle 1 for convenient water filling, and the sealing cover 16 is used to tightly seal the water filling port 15 to ensure the stable air pressure inside the bottle.

[0033] In the present utility model, a fixed water level line 9 is printed outside the drainage bottle 1 for facilitating adding water to the fixed water level line 9 each time.

[0034] In the present utility model, the drainage bottle 1 is a transparent drainage bottle 1 made of polyvinyl chloride, which is convenient for observing the water filling situation and the gas bubbling situation inside the bottle.

[0035] Principle of use: Open the sealing cover 16, add normal saline from the water filling port 15 to the fixed water level line 9, and tighten the sealing cover 16; adjust the depth of the regulating tube 6 extending into the water to 5 - 12 cm according to the disease condition requirements, connect the drainage tube 2 and the negative pressure air tube 3, the drainage tube 2 is connected to the chest cavity 4, and the negative pressure air tube 3 is connected to the negative pressure suction mechanism 5, and start negative pressure suction. After the negative pressure closed thoracic drainage device 100 with adjustable air pressure is connected to the negative pressure suction mechanism 5, the gas in the chest cavity 4 starts to be discharged from the drainage tube 2 into the drainage bottle 1. When the negative pressure in the drainage bottle 1 exceeds 1 atmospheric pressure - water column pressure, the regulating tube 6 starts to continuously suck air from outside the drainage bottle 1, and when the pressure in the drainage bottle 1 is continuously maintained at 1 atmospheric pressure - water column pressure (the water column pressure is defined as the pressure difference of the height difference between the end of the regulating tube 6 and the water surface in the drainage bottle 1), excessive negative pressure will not be caused, thus avoiding lung injury.

[0036] Embodiment 1

[0037] As shown in the attached Figure 4 figure, taking the regulating tube 6 extending into the water by 7 cm as an example when using the negative pressure closed thoracic drainage device 100 with adjustable air pressure, at this time, the drainage tube 2 is 3 cm below the water surface. When just connected to the negative pressure suction mechanism 5, negative pressure starts to be generated in the drainage bottle 1. When the negative pressure in the drainage bottle 1 exceeds 1 atmospheric pressure - 3 cm water column, through the pressure difference, the gas in the chest cavity 4 is sucked into the drainage bottle 1 and discharged.

[0038] Embodiment 2

[0039] As shown in the attached Figure 5 figure, when the negative pressure in the drainage bottle 1 continuously increases to 1 atmospheric pressure - 7 cm water column, outside air starts to continuously enter the drainage bottle 1 through the regulating tube 6, keeping the pressure in the drainage bottle 1 constantly at 1 atmospheric pressure - 7 cm water column, so as to maintain a negative pressure suction of 1 atmospheric pressure - 7 cm water column for the chest cavity 4.

[0040] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present utility model. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present utility model should all be covered within the scope protected by the claims of the present utility model.

Claims

1. A negative pressure chest closed drainage device with adjustable air pressure, comprising a drainage bottle, a drainage tube, and a negative pressure air tube; the drainage bottle is formed with an inner cavity for filling a fluid, and a first through hole and a second through hole are opened on the top surface of the drainage bottle; one end of the drainage tube is inserted into the inner cavity from the first through hole and extends to below the fluid, and the other end is used to communicate with the chest cavity; one end of the negative pressure air tube is connected to the inner cavity through the second through hole, and the other end is used to connect to a negative pressure suction mechanism; characterized in that: It also includes an adjusting tube. A third through hole is opened on the top surface of the drainage bottle. The bottom end of the adjusting tube enters the inner cavity from the third through hole and extends to below the fluid.

2. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 1, characterized in that: The length of the bottom end of the regulating tube extending below the fluid is 5-12 cm.

3. The negative pressure closed chest drainage device with adjustable air pressure as claimed in any one of claims 1 or 2, characterized in that: The top end of the regulating tube is located outside the drainage bottle and is equipped with an air filtering element.

4. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 3, characterized in that: A sealing rubber ring is installed at the third through hole.

5. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 4, characterized in that: The outer wall of the regulating tube is printed with corresponding scale lines indicating the depth of the bottom end of the regulating tube extending below the surface of the fluid.

6. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 5, characterized in that: The drainage bottle is provided with a sealing assembly outside for sealing the third through hole.

7. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 6, characterized in that: A water inlet is provided on the side wall of the drainage bottle, and a sealing cover is provided at the water inlet.

8. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 7, characterized in that: A fixed water level line is printed on the outside of the drainage bottle.

9. The negative pressure closed chest drainage device with adjustable air pressure as claimed in claim 8, characterized in that: The drainage bottle is a transparent drainage bottle made of polyvinyl chloride.

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