Chest drainage device

Abstract

According to the chest drainage device, air cavities comprise the first air cavity and the second air cavity; the first air cavity is longitudinally arranged and is internally provided with an air floating ball; a first air valve communicated with the air outlet pipe is arranged at the top of the first air cavity; an electromagnetic piston is arranged in the second air cavity and comprises a piston composed of an electromagnet and a diaphragm surrounding the electromagnet, the top surface of the electromagnet is connected with a spring, and the other end of the spring is connected with the cavity top of the second air cavity; an electromagnetic coil connected with a control device is arranged in the cavity wall of the second air cavity; a second air valve communicated with the air outlet pipe is arranged at the top of the second air cavity; the air outlet pipe is provided with an air pressure adjusting device. According to the method, the fluctuation height and the fluctuation frequency of the air floating ball are recorded as lung power and respiration frequency of individual respiration as normal respiration monitoring data; the device can be used as a personalized auxiliary drainage device by combining the electromagnetic piston with the lung power and breathing frequency of an individual. In combination with a wet drainage valve, a height-adjustable movable wall can be introduced to serve as a pressure relief adjusting valve, and the device is suitable for special individuals with weak lung power.

Description

Technical Field

[0001] The present invention specifically relates to a chest drainage device, belonging to the technical field of medical devices. Background Art

[0002] Intrapleural pressure refers to the pressure inside the pleural membrane. At the end of quiet exhalation, the intrapleural pressure is about -0.665 to -0.399 kPa (-5 to -3 mmHg), and at the end of inspiration, it is about -1.33 to -0.665 kPa (-10 to -5 mmHg). The human body will produce a certain negative pressure during normal breathing, which will cause the lungs to expand, gas to enter the lungs, oxygenation to begin, and oxygen to be transported to various parts of the body.

[0003] If the pressure is too low, oxygen cannot be transported, and if the pressure is too high, there is a risk of pulmonary hemorrhage. If a closed pneumothorax occurs, the pressure in the chest cavity will increase, but it is generally still lower than atmospheric pressure. If it is an open pneumothorax, the pleural cavity is connected to the outside world, and the pressure in the pleural cavity is basically equal to the atmospheric pressure. If it is a tension pneumothorax, because a valve will be formed at the site of lung damage, gas will continue to enter the pleural cavity, and the pressure in the pleural cavity will continue to increase, even higher than atmospheric pressure. This situation may cause complete collapse of the lungs and require emergency treatment.

[0004] Closed chest drainage is to place one end of the drainage tube into the chest cavity, and connect the other end to a water-sealed bottle at a lower position, so as to discharge gas or collect fluid in the chest cavity, so that the lung tissue can reopen and restore function. As a treatment method, it is widely used in the drainage of hemothorax, pneumothorax, empyema and after thoracotomy, and plays a very important role in the treatment of diseases.

[0005] Most of the existing chest drainage devices are composed of an effusion chamber, a water seal chamber and a pressure regulating chamber which are integrally packaged and connected in series through pipelines. The structure is relatively simple, and there is no air pressure monitoring and no active pressure adjustment.

[0006] Therefore, it is necessary to provide a novel chest drainage device. Summary of the invention

[0007] In order to solve the deficiencies of the prior art, an object of the present invention is to provide a chest drainage device.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A chest drainage device comprises an air cavity provided with an air inlet pipe and an air outlet pipe;

[0010] The air cavity comprises a first air cavity and a second air cavity connected in parallel;

[0011] The first air cavity is arranged in the longitudinal direction and has an air float ball built in;

[0012] The top of the first air cavity is provided with a first air valve connected to the air outlet pipe;

[0013] The second air cavity has an electromagnetic piston built in, including a piston composed of an electromagnet and a diaphragm surrounding the electromagnet, the top surface of the electromagnet is connected to a spring, and the other end of the spring is connected to the top of the second air cavity; an electromagnetic coil connected to a control device is provided in the cavity wall of the second air cavity, for generating a magnetic field that drives the electromagnet to slide along the second air cavity;

[0014] The top of the second air cavity is provided with a second air valve connected to the air outlet pipe;

[0015] The first gas valve and the second gas valve are connected to a control device and driven by the control device;

[0016] The air outlet pipe is provided with an air pressure regulating device.

[0017] The first air cavity and the second air cavity are both provided with a height sensor connected to a control device;

[0018] The height sensor in the first air cavity is used to feed back the detected position information of the air floating ball to the control device;

[0019] The height sensor in the second air cavity is used to feed back the detected position information of the piston to the control device.

[0020] Furthermore, the height sensor comprises a photoelectric sensor.

[0021] The air pressure regulating device comprises a dry drainage valve and a wet drainage valve.

[0022] Furthermore, the wet drainage valve comprises an air outlet pipe which is led into the liquid storage tank, and the liquid storage tank is provided with an exhaust pipe;

[0023] The air outlet pipe and the exhaust pipe share a pipe wall on one side, and the height of the pipe wall can be adjusted through a height adjustment structure.

[0024] Furthermore, the height adjustment structure includes a movable wall, and the movable wall is longitudinally arranged in a slide groove arranged along the outer wall of the outlet pipe.

[0025] The movable wall is engaged with a gear through teeth on the side, and the gear is driven by the shaft of the first motor;

[0026] The first motor is connected to the control device.

[0027] Furthermore, the height adjustment structure includes a movable wall, and the movable wall is longitudinally arranged in a slide groove arranged along the outer wall of the outlet pipe;

[0028] The movable wall is a soft board, and the top is rolled up by a reel driven by a second motor;

[0029] The second motor is connected to the control device.

[0030] Along the air outlet direction, the air passage of the second air cavity after the second air valve is placed in front of the air passage of the first air cavity after the first air valve.

[0031] The present invention is beneficial in that:

[0032] A chest drainage device of the present invention can record the individual's pulmonary power and breathing frequency as normal respiratory monitoring data by introducing an air float in the first air cavity, through the height and frequency of the air float's rise and fall; and can be used as a personalized auxiliary drainage device by introducing a second air cavity with a built-in electromagnetic piston, combined with the individual's pulmonary power and breathing frequency. When the chest drainage device of the present invention is combined with a wet drainage valve, a movable wall with adjustable height can also be introduced as a pressure relief regulating valve, which is suitable for special individuals with weak pulmonary power.

[0033] The chest drainage device of the present invention has a simple structure, is easy to use, and has various usage modes. Each usage mode can be used independently, or the mode can be switched in real time in combination with data fed back by each sensor. It can be personalized and has strong practicality and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a chest drainage device using a dry drainage valve.

[0035] Figure 2 A schematic diagram of the structure of a chest drainage device using a wet drainage valve.

[0036] Figure 3 This is a schematic diagram of the structure of using a reel to reel in the movable wall.

[0037] The meanings of the marks in the accompanying drawings are as follows: 1. liquid accumulation pipe, 2. air inlet pipe, 3. air outlet pipe, 4. first air cavity, 5. second air cavity, 6. air float, 7. first air valve, 8. electromagnet, 9. diaphragm, 10. electromagnetic coil, 11. second air valve, 12. air pressure sensor, 13. dry drainage valve, 14. control device, 15. exhaust pipe, 16. movable wall, 17. gear, 18. reel. DETAILED DESCRIPTION

[0038] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] A chest drainage device consists of an air cavity, an air valve, an electromagnetic piston, an air pressure regulating device and a control device.

[0040] Example 1

[0041] The air cavity comprises a first air cavity and a second air cavity connected in parallel, one end of which is a common air inlet pipe, and the other end of which is a common air outlet pipe.

[0042] And near the air outlet side, the first air cavity and the second air cavity are respectively equipped with air valves, namely the first air valve and the second air valve. Preferably, the first air valve and the second air valve can be electromagnetic valves or other electrically driven valves.

[0043] Preferably, Figure 1 As shown, along the air outlet direction, the air passage of the second air cavity after the second air valve is placed in front of the air passage of the first air cavity after the first air valve.

[0044] The first air cavity has an air-floating ball built in. The top of the first air cavity is provided with a height sensor for detecting the height of the air-floating ball in the first air cavity.

[0045] The second air cavity has an electromagnetic piston built in. The movable part of the electromagnetic piston is a ring-shaped diaphragm with its outer edge attached to the inner wall of the second air cavity, and the diaphragm is arranged around the electromagnet. The top surface of the electromagnet is fixedly connected to one end of the spring, and the other end of the spring is connected to the cavity top of the second air cavity. The driving part of the electromagnetic piston is an electromagnetic coil arranged in the cavity wall of the second air cavity.

[0046] The top of the second air cavity is also connected to a height sensor for detecting the height of the electromagnetic piston in the second air cavity.

[0047] Preferably, the height sensor can be a photoelectric sensor.

[0048] The air inlet pipe is equipped with a pressure sensor, and the air outlet pipe is connected to an air pressure regulating device.

[0049] The photoelectric sensor, the electromagnetic coil and the pressure sensor are respectively connected to the control device.

[0050] The air pressure regulating device may use a dry drainage valve, so that the chest drainage device of the present invention constitutes a dry drainage device.

[0051] Preferably, the dry drainage valve can adopt the structure disclosed in patent CN202022581321.9, or the structure disclosed in CN201710273963.2.

[0052] When using,

[0053] The air inlet pipe is connected to the middle part of the fluid collection pipe, the top end of the fluid collection pipe extends into the chest cavity, and the bottom end of the fluid collection pipe is connected to the fluid collection bottle / fluid collection bag.

[0054] Usage method 1:

[0055] The first gas valve is opened and the second gas valve is closed.

[0056] As you breathe, the flow of gas in the chest cavity causes the air float to sink or float in the first air cavity. The height of the air float is detected by the height sensor and fed back to the control device. The height of the air float can be recorded as lung power, and the height range generated by each breath (Hmin-Hmax, Hmin is the lowest height, Hmax is the highest height) can be recorded as the normal floating value of the individual. The control device also records the change in the height of the air float as the respiratory frequency. At the same time, the corresponding chest pressure range (Pmin-Pmax, Pmin is the lowest chest pressure, Pmax is the highest chest pressure) is recorded through the pressure sensor.

[0057] As you breathe, the fluid in the chest cavity flows into the fluid collection bottle / bag through the fluid collection tube under the power of the positive and negative pressure switching of breathing.

[0058] The pressure difference generated by breathing is regulated by the deformation of the diaphragm of the dry suction valve.

[0059] Method 2:

[0060] Based on the first usage mode, when the control device detects that the height of the air float ball is lower than Hmin or the preset minimum height, it indicates that the lung power of breathing is weakened.

[0061] At this time, the control device closes the first air valve and opens the second air valve, and controls the frequency and strength of the electromagnetic coil according to the height of Hmin-Hmax and the breathing frequency, thereby generating a magnetic field in the wall of the second air cavity that drives the electromagnet to slide along the second air cavity; the electromagnetic piston moves back and forth under the action of the magnetic field and the spring force, and the frequency and height of the electromagnetic piston movement are consistent with the breathing frequency and lung power.

[0062] This method is auxiliary active drainage.

[0063] Usage three:

[0064] Based on the first usage mode, when the control device detects that the air pressure is greater than Pmax or the preset maximum chest pressure, it indicates that the air pressure in the chest cavity is too high.

[0065] At this time, the control device closes the first air valve, opens the second air valve, and drives the electromagnetic piston to move back and forth in the second air cavity according to the recorded breathing frequency to perform active exhaust to reduce chest pressure.

[0066] When the chest pressure drops to within the range of Pmin-Pmax, the first valve is opened and the second valve is closed, allowing the individual to breathe autonomously.

[0067] In the second and third use modes, due to the introduction of the reciprocating motion of the electromagnetic piston, the unidirectional movement intensity of the motion is greater than the speed of the airflow in the chest cavity during spontaneous breathing, especially in the liquid collection tube. That is, the accelerated airflow can accelerate the liquid in the liquid collection tube to flow into the liquid collection bag, effectively preventing the liquid, such as thick sputum, from accumulating in the middle of the liquid collection tube and blocking the tube.

[0068] At the same time, based on Embodiment 2 and Implementation 3, when the chest air pressure is greater than the preset maximum safety value and lower than the preset minimum safety value, or when the lung power is lower than the minimum preset safety value, an alarm can also be issued by the control device to prevent special conditions.

[0069] Example 2

[0070] Based on the structure of Example 1, the air pressure regulating device may also use a wet drainage valve.

[0071] Similar to the traditional structure, the outlet pipe goes deep into the liquid in the liquid storage tank. The exhaust pressure is adjusted by the height of the liquid column entering the outlet pipe. That is, when the pressure in the chest cavity is greater than the pressure of the liquid column, the gas is discharged. The liquid column plays the role of liquid sealing, pressure regulation and pressure relief.

[0072] The difference from the traditional structure is:

[0073] A common movable wall with adjustable height is arranged between the air outlet pipe extending deep into the liquid storage tank and the exhaust pipe of the liquid storage tank. By adjusting the height of the movable wall, the height of the liquid column in the air outlet pipe is adjusted, that is, the pressure of the pressure relief is adjusted.

[0074] Based on usage methods one, two, and three,

[0075] When an individual is weak and has insufficient lung activity, that is, when the chest pressure is low, the height of the active wall can be lowered to reduce the height of the liquid column and the pressure relief pressure, so that the individual can also exhaust gas at a lower pressure.

[0076] The height adjustment structure of the movable wall can be set in a drawer plate form.

[0077] That is, a missing portion is provided in the longitudinal direction on the common pipe wall of the air outlet pipe and the exhaust pipe.

[0078] A movable wall that can cover the missing part is arranged on any side surface, and a corresponding slide groove is arranged so that the movable wall slides up and down in the slide groove to adjust the tube length of the bottom of the air outlet pipe.

[0079] The top of the movable wall is connected to the power structure.

[0080] Power structure 1:

[0081] The movable wall is connected with the gear teeth through the tooth pattern on the side surface. The rotating shaft of the gear is fixed in the air outlet pipe or the exhaust pipe. The rotating shaft of the gear is driven by the control device through the shaft of the first motor.

[0082] Power structure 2:

[0083] The movable wall is a soft board, and the top is rolled up by a reel driven by a second motor; the second motor is connected to a control device.

[0084] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A chest drainage device, characterized in that: It includes an air cavity provided with an air inlet pipe and an air outlet pipe; The air cavity comprises a first air cavity and a second air cavity connected in parallel; The first air cavity is arranged in the longitudinal direction and has an air float ball built in; The top of the first air cavity is provided with a first air valve connected to the air outlet pipe; The second air cavity has an electromagnetic piston built in, including a piston composed of an electromagnet and a diaphragm surrounding the electromagnet, the top surface of the electromagnet is connected to a spring, and the other end of the spring is connected to the top of the second air cavity; an electromagnetic coil connected to a control device is provided in the cavity wall of the second air cavity, for generating a magnetic field that drives the electromagnet to slide along the second air cavity; The top of the second air cavity is provided with a second air valve connected to the air outlet pipe; The first gas valve and the second gas valve are connected to a control device and driven by the control device; The air outlet pipe is provided with an air pressure regulating device.

2. The chest drainage device according to claim 1, characterized in that: The first air cavity and the second air cavity are both provided with a height sensor connected to a control device; The height sensor in the first air cavity is used to feed back the detected position information of the air floating ball to the control device; The height sensor in the second air cavity is used to feed back the detected position information of the piston to the control device.

3. The chest drainage device according to claim 2, characterized in that: The height sensor includes a photoelectric sensor.

4. The chest drainage device according to claim 1, characterized in that: The air pressure regulating device comprises a dry drainage valve and a wet drainage valve.

5. The chest drainage device according to claim 4, characterized in that: The wet drainage valve includes an air outlet pipe introduced into a liquid storage tank, and the liquid storage tank is provided with an exhaust pipe; The air outlet pipe and the exhaust pipe share a pipe wall on one side, and the height of the pipe wall can be adjusted through a height adjustment structure.

6. The chest drainage device according to claim 5, characterized in that: The height adjustment structure includes a movable wall, and the movable wall is longitudinally arranged in a slide groove arranged along the outer wall of the outlet pipe. The movable wall is engaged with a gear through teeth on the side, and the gear is driven by the shaft of the first motor; The first motor is connected to the control device.

7. The chest drainage device according to claim 5, characterized in that: The height adjustment structure comprises a movable wall, and the movable wall is longitudinally arranged in a slide groove arranged along the outer wall of the air outlet pipe; The movable wall is a soft board, and the top is rolled up by a reel driven by a second motor; The second motor is connected to the control device.

8. The chest drainage device according to claim 1, characterized in that: Along the air outlet direction, the air passage of the second air cavity after the second air valve is placed in front of the air passage of the first air cavity after the first air valve.

9. The chest drainage device according to claim 1, characterized in that: The air intake pipe has a built-in pressure sensor which is connected to a control device.

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