Drainage bottle capable of adjusting negative pressure

Abstract

The utility model provides a drainage bottle capable of adjusting negative pressure. The drainage bottle comprises a bottle body, a connector and a negative pressure adjusting device. The negative pressure adjusting device comprises an outer pipe, an inner pipe and a flexible film. The lower end of the outer tube is fixed on the bottle body, the flexible film is arranged in the middle of the outer tube, the inner tube is concentrically arranged in the center of the flexible film, and the inner tube is a tube body with an open upper end and a closed lower end; air holes are formed in the pipe wall of the inner pipe; a fixing plate is concentrically arranged on the inner wall of the lower section, a round hole is further formed in the fixing plate, a sealing ring is arranged on the inner ring wall of the fixing plate, the thickness of the sealing ring is larger than the diameter of the air hole, and when the air pressure of the bottle body ranges from 600 mmHg to 620 mmHg, the sealing ring blocks the air hole. Air pressure in the bottle body is automatically adjusted, the risk of bleeding of a patient caused by overlarge negative pressure and suction is prevented, safety of the device is improved, whether the negative pressure leaks or not can be found in time, suction is convenient, operation is easy, and the negative pressure in the bottle body is easy to control during suction.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to an adjustable negative pressure drainage bottle. Background Technology

[0002] The thyroid gland is a pair of endocrine glands located at the front of the neck. Its main function is to synthesize and secrete thyroid hormones. When the thyroid gland is diseased and medical treatment is ineffective or unsuitable for medical treatment, surgical removal is necessary. After thyroid surgery, drainage bottles are used to drain the surgical wound in the neck. However, current negative pressure thyroid drainage bottles have the following problems:

[0003] First, the negative pressure in the drainage bottle is not easy to monitor. When the negative pressure is too high, it can sometimes be sucked onto blood vessels, causing small blood vessels to rupture and bleed, posing a risk of bleeding to the patient.

[0004] Secondly, because the drainage tube is inserted into the neck cavity, sometimes the negative pressure drainage bottle may leak air due to the patient's movement, causing the negative pressure to fail. This requires complicated operations to manually draw out the negative pressure, which causes inconvenience to the clinic. If the negative pressure leak is not detected in time, it will also reduce the drainage effect. Utility Model Content

[0005] To address the above problems, this utility model provides an adjustable negative pressure drainage bottle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable negative pressure drainage bottle includes a bottle body, an interface, and a negative pressure regulating device; the interface is connected to the inner cavity of the bottle body, and the negative pressure regulating device is disposed at the top of the bottle body;

[0008] The negative pressure regulating device includes an outer tube, an inner tube, and a flexible membrane;

[0009] The lower end of the outer tube is fixed to the bottle body. The bottle body has a through hole corresponding to the position of the outer tube. The outer tube is connected to the through hole. The flexible membrane is disposed in the middle of the outer tube and divides the outer tube into an upper section and a lower section. The inner tube is concentrically disposed at the center of the flexible membrane. The inner tube is a tube with an open upper end and a closed lower end. The inner tube has air holes on its wall.

[0010] A fixing plate is concentrically provided on the inner wall of the lower section. The fixing plate is annular and has a circular hole penetrating the upper and lower surfaces. A sealing ring is provided on the inner ring wall of the fixing plate. The thickness of the sealing ring is greater than the diameter of the air hole. When the air pressure of the bottle is 600-620 mmHg, the air hole is located inside the sealing ring, and the sealing ring blocks the air hole.

[0011] Furthermore, the outer tube has a membrane cavity in the middle, and the inner wall of the membrane cavity has an annular groove. The outer edge of the flexible membrane is embedded in the annular groove, and sealant is injected into the annular groove to fix the flexible membrane to the inner wall of the membrane cavity.

[0012] Furthermore, the outer wall of the upper end of the inner tube is provided with external threads, and two annular fixing blocks are also provided. The inner annular wall of the fixing blocks is provided with corresponding internal threads. The center of the flexible membrane is provided with a first circular hole, which is sleeved on the outside of the inner tube. The two fixing blocks are fixed to the outside of the inner tube by threaded connection. The flexible membrane is sandwiched between the fixing blocks, and the two fixing blocks press against the flexible membrane.

[0013] Furthermore, when the flexible membrane is set horizontally, the air holes are located above the fixed plate.

[0014] Furthermore, the inner ring wall of the fixing plate is provided with a first annular groove, and the outer side of the sealing ring is embedded in the first annular groove. The sealing ring is made of polytetrafluoroethylene.

[0015] Furthermore, the inner ring wall of the sealing ring is provided with annular protrusions, there are two annular protrusions, which are respectively arranged on the inner side of the upper and lower ends of the sealing ring; the cross-section of the annular protrusions is semi-circular, and the diameter of the air hole is smaller than the distance between the two annular protrusions.

[0016] Furthermore, the outer tube is transparent.

[0017] Furthermore, there are six circular holes, which are equidistantly arranged along the circumference of the fixing plate.

[0018] Furthermore, the bottle body is provided with graduations.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model uses a negative pressure regulating device, which includes an outer tube, an inner tube, and a flexible membrane, to ensure that the air pressure inside the bottle is kept within the set air pressure range during use. When the air pressure is too high, the flexible membrane deforms more, causing the inner tube to continue to move downward. After the air hole is separated from the sealing ring, the air inside the bottle is drawn in from the upper end of the outer tube, enters the bottle through the air hole via the inner tube, and increases the air pressure to 600-620 mmHg. The air hole is blocked by the sealing ring, stopping the air intake and automatically adjusting the air pressure inside the bottle to prevent excessive negative pressure and the risk of bleeding caused by suction, thus improving the safety of this device. (2) By designing a transparent outer tube, the relative position of the air hole and the sealing ring can be seen through the transparent tube, thereby judging whether the air pressure inside the bottle is within the range, ensuring that the negative pressure can be detected in time to avoid affecting the drainage effect. Furthermore, the negative pressure regulating device can be connected to a syringe, and air can be drawn from the upper end of the outer tube to create a negative pressure inside the bottle. When the set negative pressure is met, the flexible membrane deforms and moves the inner tube downward, sealing the air hole and preventing further air from being drawn from the bottle. This avoids excessive pressure during suction and ensures that the air pressure inside the bottle is always within the set range. The operation is simple and the negative pressure inside the bottle is easy to control during suction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the adjustable negative pressure drainage bottle of this utility model;

[0021] Figure 2 This is a front view of the negative pressure regulating device for the adjustable negative pressure drainage bottle of this utility model;

[0022] Figure 3 This is a cross-sectional view (AA) of the negative pressure regulating device for the adjustable negative pressure drainage bottle of this utility model.

[0023] Figure 4 This is a partial enlarged view (a) of the adjustable negative pressure drainage bottle of this utility model. Detailed Implementation

[0024] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0025] Please refer to the reference. Figure 1 , Figure 2 , Figure 3 and Figure 4An embodiment of this utility model provides an adjustable negative pressure drainage bottle, comprising a bottle body 100, an interface 200, and a negative pressure regulating device. The interface 200 connects to the inner cavity of the bottle body 100 for connecting a drainage tube, achieving liquid drainage through negative pressure suction within the bottle body 100. The negative pressure regulating device is located at the top of the bottle body 100 for easy observation during use to determine the negative pressure status within the bottle body 100.

[0026] The negative pressure regulating device includes an outer tube 300, an inner tube 400, and a flexible membrane 500;

[0027] The lower end of the outer tube 300 is fixed to the bottle body 100. The bottle body 100 has a through hole 110 corresponding to the position of the outer tube 300. The outer tube 300 is connected to the through hole 110. The flexible membrane 500 is disposed in the middle of the outer tube 300, ensuring that the gas inside the bottle is connected to the outer tube 300. Gas pressure acts on the flexible membrane 500, causing it to deform. The flexible membrane 500 divides the outer tube 300 into an upper section 301 and a lower section 302. The inner tube 400 is concentrically disposed at the center of the flexible membrane 500. The inner tube 400 is a tube with an open upper end and a closed lower end. Air holes 410 are provided on the wall of the inner tube 400 to control the airflow and regulate the gas pressure inside the bottle.

[0028] A fixing plate 310 is concentrically provided on the inner wall of the lower section 302. The fixing plate 310 is annular and has a circular hole 311 penetrating its upper and lower surfaces to ensure that the air inside the bottle is connected to the lower section 302, ensuring that the flexible membrane 500 can deform under the influence of the air pressure inside the bottle 100. A sealing ring 320 is provided on the inner ring wall of the fixing plate 310. The thickness of the sealing ring 320 is greater than the diameter of the vent 410. When the air pressure in the bottle 100 is 600-620 mmHg, the vent 410 is located inside the sealing ring 320. The sealing ring 320 seals the vent 410, ensuring that the vent is sealed and air cannot enter or exit, thus ensuring that the air pressure inside the bottle is maintained within the range of 600-620 mmHg.

[0029] In use, the outer tube 300 connects to the gas inside the bottle 100. Under the pressure of the gas inside the bottle, the flexible membrane 500 deforms. When there is a negative pressure inside the bottle 100, the flexible membrane 500 moves closer to the bottle 100, causing the inner tube 400 to move to one side of the bottle 100. When the pressure inside the bottle 100 is 600-620 mmHg, the sealing ring 320 blocks the air hole 410 to prevent air from entering, thus avoiding a situation where the negative pressure inside the bottle 100 does not meet the requirements. When the negative pressure is higher, the flexible membrane 500 will deform even more. As the inner tube 400 continues to move downwards, the air hole 410 disengages from the sealing ring, allowing air to be drawn into the bottle 100 from the upper end of the outer tube 300, through the upper opening of the inner tube 400, and into the bottle 100 through the air hole 410. This increases the air pressure to 600-620 mmHg, causing the flexible membrane to recover some deformation. The inner tube then moves upwards until the air hole 410 is blocked by the sealing ring, stopping the air intake. The system automatically adjusts the air pressure inside the bottle to prevent excessive negative pressure, which could cause bleeding in the patient and improve the safety of the device.

[0030] Furthermore, the outer tube 300 has a membrane cavity 330 in its middle. The membrane cavity 330 can be a hollow sphere or a lantern shape. The inner wall of the membrane cavity 330 has an annular groove 331. The outer edge of the flexible membrane 500 is embedded in the annular groove 331. Sealant is injected into the annular groove 331 to fix the flexible membrane 500 to the inner wall of the membrane cavity 330. This ensures a firm and airtight connection between the flexible membrane 500 and the membrane cavity 330, and the membrane cavity provides a large space to avoid hindering the deformation of the flexible membrane 500. The membrane cavity 330 is transparent, ensuring that medical staff can promptly observe the status of the flexible membrane 500. When the flexible membrane 500 does not deform, there is negative pressure leakage; when the flexible membrane is attracted by negative pressure and deforms downwards, the bottle 100 is in a negative pressure state and there is no leakage. The status of the flexible membrane allows for timely detection of negative pressure leakage, preventing negative pressure leakage from affecting the drainage effect.

[0031] Furthermore, the outer wall of the upper end of the inner tube 400 is provided with external threads, and two annular fixing blocks 420 are also provided. The inner annular wall of the fixing blocks 420 is provided with corresponding internal threads. The center of the flexible membrane 500 is provided with a first circular hole 510, which is sleeved on the outside of the inner tube 400. The two fixing blocks 420 are fixed to the outside of the inner tube 400 by threaded connection. The flexible membrane 500 is clamped between the fixing blocks 420, and the two fixing blocks 420 press against the flexible membrane 420. This ensures a detachable connection between the flexible membrane 500 and the inner tube 400, with a simple structure. By pressing the flexible membrane 500 with the two fixing blocks 420, air leakage at the fixing point is avoided, ensuring the airtightness of the flexible membrane 500 and preventing air leakage that could cause negative pressure leakage inside the bottle 100. Different diameter air holes 410 can also be designed, and inner tubes 400 with different diameter air holes 410 can be disassembled and replaced to meet different air pressure requirements and adjust the air pressure.

[0032] Furthermore, when the flexible membrane 500 is horizontally positioned, the vent 410 is located above the fixed plate 310. This ensures that during use, when there is no negative pressure inside the bottle, the flexible membrane 500 no longer deforms and returns to its original shape; the vent 410 is no longer sealed, and air can be drawn from the bottle 100 by connecting a syringe to the upper end of the outer tube 300. When the set negative pressure is met, the flexible membrane 500 deforms, causing the inner tube to move downwards, thus sealing the vent 410 and preventing further air extraction from the bottle 100. This avoids excessive suction pressure inside the bottle 100, ensuring that the air pressure inside the bottle 100 remains within the set range, facilitating suction, and making operation simple and easy to control the negative pressure inside the bottle 100. Furthermore, the outer wall of the upper end of the outer tube 300 is provided with threads 340, facilitating the connection of a connecting tube via the threads. Once the absence of negative pressure is detected, the syringe is connected via the connecting tube to draw air, ensuring a negative pressure state inside the bottle. During use, a three-way valve can be installed on the connecting tube. The outer tube and the syringe are connected to two ports of the three-way valve via the connecting tube, with the remaining port left unconnected. This allows for easy control of the on / off state via the three-way valve, facilitating air drawing and venting operations to regulate the air pressure inside the bottle and ensure that the air pressure inside the bottle remains within the set range.

[0033] Furthermore, the inner ring wall of the fixing plate 310 is provided with a first annular groove 312, and the outer side of the sealing ring 320 is embedded in the first annular groove 312 to ensure that the sealing ring 320 is firmly installed with the fixing plate 310 and to prevent it from falling off. The sealing ring 320 is made of polytetrafluoroethylene (PTFE). PTFE has a very low coefficient of friction and good self-lubricating properties, reducing the contact friction between the sealing ring 320 and the outer surface of the inner tube. This ensures that the inner tube 400 can move within the sealing ring 320 under the action of the flexible membrane 500, meeting the requirements of dynamic sealing. The sealing ring 320 has high elasticity and compressive deformation capacity, and maintains close contact with the outer surface of the inner tube, ensuring that the vent is sealed when it is inside the sealing ring, preventing gas leakage.

[0034] Furthermore, the inner ring wall of the sealing ring 320 is provided with two annular protrusions 321, respectively located on the inner sides of the upper and lower ends of the sealing ring 320. The cross-section of each annular protrusion 321 is semi-circular, reducing the contact area between the sealing ring 320 and the inner tube 400, lowering the friction between them, ensuring minimal resistance to the sliding of the inner tube 400 within the sealing ring 320, facilitating the movement of the inner tube 400 by the flexible membrane 500, and also making it easier for the annular protrusion 321 to deform and conform to the outer surface of the inner tube 400, ensuring a tight seal. The diameter of the vent 410 is smaller than the distance between the two annular protrusions 321, ensuring that when the vent is located between the two annular protrusions 321, the vent is sealed, preventing air leakage.

[0035] Furthermore, the outer tube 300 is transparent. This allows for easy viewing of the relative position of the vent 410 and the sealing ring 320, thus enabling the determination of whether the air pressure inside the bottle 100 is within the acceptable range. If the vent 410 is located above the sealing ring 320, it indicates a negative pressure leak, ensuring timely detection of any leaks and preventing any impact on the drainage effect. If the vent 410 is located below the sealing ring, the negative pressure is too high, and the air pressure inside the bottle 100 can be adjusted by releasing air.

[0036] Furthermore, there are six circular holes 311, which are equidistantly arranged along the circumference of the fixing plate. This design is aesthetically pleasing and ensures that the gas in the bottle 100 can act on the flexible membrane, allowing for its deformation.

[0037] Furthermore, the bottle body 100 is provided with a scale 120. This helps medical staff to know the drainage volume and prevent over-drainage or under-drainage.

[0038] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A drainage bottle with adjustable negative pressure, characterized in that: It includes a bottle body, an interface, and a negative pressure regulating device; the interface is connected to the inner cavity of the bottle body, and the negative pressure regulating device is located at the top of the bottle body. The negative pressure regulating device includes an outer tube, an inner tube, and a flexible membrane; The lower end of the outer tube is fixed to the bottle body. The bottle body has a through hole corresponding to the position of the outer tube. The outer tube is connected to the through hole. The flexible membrane is disposed in the middle of the outer tube and divides the outer tube into an upper section and a lower section. The inner tube is concentrically disposed at the center of the flexible membrane. The inner tube is a tube with an open upper end and a closed lower end. The inner tube has air holes on its wall. A fixing plate is concentrically provided on the inner wall of the lower section. The fixing plate is annular and has a circular hole penetrating the upper and lower surfaces. A sealing ring is provided on the inner ring wall of the fixing plate. The thickness of the sealing ring is greater than the diameter of the air hole. When the air pressure of the bottle is 600-620 mmHg, the air hole is located inside the sealing ring, and the sealing ring blocks the air hole.

2. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: The outer tube has a membrane cavity in the middle, and the inner wall of the membrane cavity has an annular groove. The outer edge of the flexible membrane is embedded in the annular groove, and sealant is injected into the annular groove to fix the flexible membrane to the inner wall of the membrane cavity.

3. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: The outer wall of the upper end of the inner tube is provided with external threads, and two annular fixing blocks are also provided. The inner annular wall of the fixing blocks is provided with corresponding internal threads. The center of the flexible membrane is provided with a first circular hole, which is sleeved on the outside of the inner tube. The two fixing blocks are fixed to the outside of the inner tube by threaded connection. The flexible membrane is sandwiched between the fixing blocks, and the two fixing blocks press against the flexible membrane.

4. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: When the flexible membrane is set horizontally, the air holes are located above the fixed plate.

5. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: The inner ring wall of the fixing plate is provided with a first annular groove, and the outer side of the sealing ring is embedded in the first annular groove. The sealing ring is made of polytetrafluoroethylene.

6. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: The inner ring wall of the sealing ring is provided with annular protrusions. There are two annular protrusions, which are respectively located on the inner sides of the upper and lower ends of the sealing ring. The cross-section of the annular protrusion is semi-circular, and the diameter of the vent is smaller than the distance between the two annular protrusions.

7. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: The outer tube is transparent.

8. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: There are six circular holes, which are equidistantly arranged along the circumference of the fixing plate.

9. The adjustable negative pressure drainage bottle as described in claim 1, characterized in that: The bottle has graduations.

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