Carbon dioxide absorption device for anesthesia machine

Abstract

The invention discloses a carbon dioxide absorption device for an anaesthesia machine, and relates to the technical field of medical instruments. The device comprises an absorber tank body, an alkaline solution box, a driving motor, a water pump, a spraying pipe, a spraying head, filtering cotton, an air inlet, an air outlet, a water vapor collecting tank, a cooling device, a temperature sensor, a control module, a water discharging opening, an alkaline solution box cover, an alkaline solution adding opening, an alkaline solution discharging opening, a pH value sensor, an alarm device, a cooling fan, a displayer, a dehumidifying device and a power source. The problem that the absorbent is not easy to judge after failure in the prior art is solved.

Description

Technical Field

[0001] The patent of this invention relates to the field of biomedical technology, specifically a carbon dioxide absorption device for an anesthesia machine. Background Art

[0002] During general anesthesia, the patient's breathing will inevitably produce carbon dioxide. Since the patient's breathing circuit is basically closed, it is necessary to find a way to remove the carbon dioxide in the circuit. However, the existing anesthesia machines absorb carbon dioxide with granular absorbents such as soda lime, calcium lime or barium lime. It is difficult to judge whether the absorbent is invalid. The current technology can only judge by color change, whether it is still hot and hardness change. Summary of the invention

[0003] The patented design of the present invention provides a carbon dioxide absorption device for an anesthesia machine, which solves the problems of absorbent failure and difficulty in judgment in the prior art.

[0004] A carbon dioxide absorption device for an anesthesia machine, the device comprising: an absorber tank 1, an alkaline solution box 2, a drive motor 3, a water pump 4, a spray pipe 5, a nozzle 6, a filter cotton 7, and a dehumidification device 23; The absorber tank body 1 comprises an air inlet 8 and an air outlet 9; the air inlet 8 is used to transport oxygen from the oxygen supply device to the absorber tank body 1; the air outlet 9 is located on the side wall of the absorber tank body (1) and is used to connect the anesthesia breathing tube; the water pump 4 is placed in the alkaline solution box 2; the drive motor 3 is connected to the water pump 4; the water pump 4 is connected to the spray pipe 5; the spray pipe 5 is connected to the nozzle 6; the filter cotton 7 is sheet-shaped and is arranged vertically on the ground; the direction of the liquid sprayed by the nozzle 6 is at right angles to the plane of the filter cotton 7; the dehumidification device (23) is located above the air outlet (9), including but not limited to using a desiccant or a dehumidifier to block excess water vapor in the gas.

[0005] Preferably, the device further comprises: a water vapor collection tank 10 ; the water vapor collection tank 10 is arranged below the lower edge of the filter cotton 7 .

[0006] Preferably, the device further comprises: A driving motor 3, which is disposed inside or outside the absorber tank 1 and is used to drive the water pump 4; A temperature sensor 12, wherein the temperature sensor 12 is arranged on the inner wall of the absorber tank 1 near the filter cotton 7; A cooling device 11, wherein the cooling device 11 is arranged on the inner wall of the absorber tank 1; The control module 13 is connected to the driving motor 3 , the control module is connected to the temperature sensor 12 , and the control module is connected to the cooling device 11 .

[0007] Preferably, the water vapor collection tank 10 includes a drain port 14 disposed on a side wall thereof.

[0008] Preferably, the alkaline solution box 2 is provided with an alkaline solution box cover 15 , the alkaline solution box cover 16 is provided with an alkaline solution adding port 16 , and the side wall of the alkaline solution box 2 is provided with an alkaline solution discharging port 17 .

[0009] Preferably, the control module 13 is used to obtain the temperature data collected by the temperature sensor 12, and control the opening or closing of the cooling device 11 according to the temperature data.

[0010] Preferably, the cooling device 11 comprises a fan or a heat dissipation copper wire 21 , and the heat dissipation fan 21 is arranged on the inner wall of the absorber tank body 1 .

[0011] Preferably, the device further includes: a pH sensor 15 and an alarm device 19. The control module 13 obtains the pH data tested by the pH sensor 15 and controls the alarm device 19 to emit an alarm sound when the pH data is greater than a first threshold.

[0012] Compared with the existing technology, the beneficial effect of the present invention is that the filter cotton 7 wetted by the alkaline solution inside the absorber tank 1 not only reduces the airway resistance that may be increased by the absorber, but also increases the area for reaction with carbon dioxide and the absorption area. The existing solid carbon dioxide absorbent has a multi-mesh structure, but the absorption area is compared with the liquid wet filter cotton 7. The wet filter cotton 7 has a larger absorption area or contact area and must pass through the integrity of the filter cotton 7.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: an alkaline solution box 2 is added. Since the pH value in the alkaline solution is very easy to measure, a pH sensor 15 is provided inside, and a display 22 is outside the tank. When the pH value approaches a specified threshold, an alarm is issued to remind the staff to replace it in time, thereby solving the problem in the existing technology that it is difficult to determine and find that the alkaline substance in the alkaline solution is insufficient.

[0014] Compared with the existing technology, the beneficial effect of the present invention is that the reaction of carbon dioxide absorption is an exothermic process, which may cause the temperature inside the segment to be too high or the gas temperature in the loop to be too high, which may affect the patient's safety or the anesthesia effect. Therefore, a temperature sensor 12 is provided. When the temperature inside the absorber tank body 1 is too high, the cooling device 11 in the tank body is started to cool the inside of the absorber tank body 1, thereby solving the problem of uncontrollable equipment temperature in the prior art.

[0015] Compared with the existing technology, the beneficial effect of the present invention is: since the inside of the absorber tank body 1 is liquid and it is an exothermic reaction, it will inevitably lead to excess water vapor. If there is excess water vapor in the circuit, the water vapor will enter the inside of the anesthesia machine with the airflow, which may cause the malfunction of devices such as the valve and the oxygen concentration probe. Therefore, a dehumidification device 23 is added inside the absorber tank body to effectively filter out excess water vapor contained in the saturated water vapor, generate water droplets that flow out of the water vapor collection tank, thereby solving the problem of excessive water vapor in the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a carbon dioxide absorption device for an anesthesia machine according to an embodiment of the present disclosure is shown.

[0017] Figure 2 A left side view of a carbon dioxide absorption device for an anesthesia machine according to an embodiment of the present disclosure is shown.

[0018] Figure 3 A front cross-sectional view of a carbon dioxide absorption device for an anesthesia machine according to an embodiment of the present disclosure is shown.

[0019] Figure 4 A side cross-sectional view of a carbon dioxide absorption device for an anesthesia machine according to an embodiment of the present disclosure is shown.

[0020] Figure 5 A block diagram of a control system for a carbon dioxide absorption device of an anesthesia machine according to an embodiment of the present disclosure is shown.

[0021] 1 absorber tank; 2 alkaline solution box; 3 drive motor; 4 water pump; 5 spray pipe; 6 nozzle; 7 filter cotton; 8 air inlet; 9 air outlet; 10 water vapor collection tank; 11 cooling device; 12 temperature sensor; 13 control module; 14 drain outlet; 15 alkaline solution box cover; 16 alkali solution addition port; 17 alkali solution discharge port; 18 pH sensor; 19 alarm device; 21 cooling fan; 22 display: 23 dehumidification device; 24 power supply. DETAILED DESCRIPTION

[0022] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0026] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0027] like Figure 1-Figure 5As shown, the absorber tank body 1 includes an air inlet 8 and an air outlet 9; the air inlet 8 extends into the absorber tank body 1 to transport oxygen from the oxygen supply device to the absorber tank body 1, and the air outlet 9 is located on the side wall of the absorber tank body 1, for example, above the filter cotton 7, and the air outlet 9 can pass through one side of the absorber tank body 1 to connect the anesthesia breathing tube, the water pump 4 is placed in the alkaline solution box 2, and the driving motor 3 drives the water pump 4 to extract the alkaline solution in the alkaline solution box 2, the driving motor 3 is connected to the water pump 4, and the water pump 4 is connected to the spray pipe 5, The spray pipe 5 is connected to the nozzle 6, and the alkaline solution is transported to the nozzle 6 through the spray pipe 5. The filter cotton 7 is in sheet form and is arranged vertically on the ground. The direction of the liquid sprayed by the nozzle 6 is at right angles to the plane of the filter cotton 7. Compared with the existing technology, the beneficial effect of the present invention is that the larger area of ​​the filter cotton 7 increases the area for reaction or absorption with carbon dioxide, and also reduces the airway resistance that may be increased by the absorber. The dehumidification device 23 is located above the air outlet 9, including but not limited to the use of desiccant or dehumidifier and other methods to block excess water vapor in the gas.

[0028] In a possible implementation, the device further includes: a water vapor collection tank 10 ; the water vapor collection tank 10 is disposed below the lower edge of the filter cotton 7 to collect the water vapor filtered by the dehumidification device 23 .

[0029] In a possible implementation, the device further includes: a driving motor 3, which is disposed inside or outside the absorber tank 1 and is used to drive the water pump 4 to pump out the liquid in the alkaline solution box 2; In a possible implementation, the device further includes: a temperature sensor 12, which is arranged on the inner wall of the absorber tank 1 near the filter cotton 7, and is used to detect the internal temperature of the absorber tank 1 and transmit the temperature data of the absorber tank 1 to the control module 13; In a possible implementation, the device also includes: a cooling device 11, which is arranged on the inner wall of the absorber tank body 1, and when the control module 13 determines that the data transmitted by the temperature sensor 12 is greater than a specified threshold, the control module 13 controls the opening of the cooling device 11; the cooling device 11 is located inside the absorber tank body 1, and includes a fan or a heat dissipation copper wire 21, and the heat dissipation fan 21 is arranged on the inner wall of the absorber tank body 1.

[0030] In a possible implementation, the device further includes: a control module 13 , the control module is connected to the drive motor 3 , the control module is connected to the temperature sensor 12 , and the control module is connected to the cooling device 11 .

[0031] The water vapor collection tank 10 includes a water drain port 14 disposed on a side wall thereof.

[0032] In a possible implementation, the device further includes: an alkaline solution box cover 15 is provided on the alkaline solution box 2 , an alkaline solution adding port 16 is provided on the alkaline solution box cover 16 , and an alkaline solution discharging port 17 is provided on the side wall of the alkaline solution box 2 .

[0033] The control module 13 is used to obtain the temperature data collected by the temperature sensor 12 and control the opening or closing of the cooling device 11 according to the temperature data.

[0034] In a possible implementation, the device further includes: a pH sensor 15 located in the alkaline solution box 2, the control module 13 obtains pH data tested by the pH sensor 15, and controls the alarm device 19 to emit an alarm sound when the pH data is greater than a first threshold.

[0035] In a possible implementation, the device also includes: a display 22 located on the outer wall or exterior of the absorber tank, and the display 22 obtains the monitoring values ​​transmitted by the pH sensor 15 and the temperature sensor 12 and displays them on the display 22 in the form of images, texts, and numbers.

[0036] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0037] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0038] In the several embodiments provided in the present disclosure, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0039] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0040] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of a software program module.

[0041] If the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., various media that can store program codes.

[0042] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable memory, which may include a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0043] The embodiments of the present disclosure are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method of the present disclosure and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present disclosure, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present disclosure.

[0044] Various aspects of the present disclosure are described herein with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of boxes in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0045] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to multiple embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a part of a module, program segment or instruction, and a part of the module, program segment or instruction includes one or more executable instructions for realizing the specified logical function. In some alternative implementations, the function marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square boxes can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of special hardware and computer instructions.

[0046] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the implementations disclosed herein.

Claims

1. A carbon dioxide absorption device for an anesthesia machine, characterized in that: The device comprises: an absorber tank (1), an alkaline solution box (2), a drive motor (3), a water pump (4), a spray pipe (5), a spray head (6), filter cotton (7), and a dehumidification device (23); The absorber tank body (1) comprises an air inlet (8) and an air outlet (9); the air inlet (8) is used to transport oxygen from the oxygen supply device to the absorber tank body (1); the air outlet (9) is located on the side wall of the absorber tank body (1) and is used to connect an anesthesia breathing tube; the water pump (4) is placed in the alkaline solution box (2); the drive motor (3) is connected to the water pump (4); the water pump (4) is connected to the spray pipe (5); the spray pipe (5) is connected to the spray head (6); the filter cotton (7) is in the form of a sheet and is arranged vertically to the ground; the direction of the liquid sprayed by the spray head (6) is at right angles to the plane of the filter cotton (7); the dehumidification device (23) is located above the air outlet (9), including but not limited to using a desiccant or a dehumidifier to block excess water vapor in the gas.

2. A carbon dioxide absorption device for an anesthesia machine according to claim 1, characterized in that: The device further comprises: a water vapor collection tank (10); the water vapor collection tank (10) is arranged below the lower edge of the filter cotton (7).

3. A carbon dioxide absorption device for an anesthesia machine according to claim 2, characterized in that: The device also includes: A driving motor (3), the driving motor (3) being disposed inside or outside the absorber tank (1) and being used to drive the water pump (4); A temperature sensor (12), the temperature sensor (12) being arranged on the inner wall of the absorber tank (1) at a position close to the filter cotton (7); A cooling device (11), the cooling device (11) being arranged on the inner wall of the absorber tank (1); A control module (13), the control module being connected to the drive motor (3), the control module being connected to the temperature sensor (12), and the control module being connected to the temperature reduction device (11).

4. A carbon dioxide absorption device for an anesthesia machine according to claim 3, characterized in that: The water vapor collection tank (10) comprises a water drain port (14) arranged on a side wall thereof.

5. A carbon dioxide absorption device for an anesthesia machine according to claim 4, characterized in that: The alkaline solution box (2) is provided with an alkaline solution box cover (15), the alkaline solution box cover (16) is provided with an alkaline solution adding port (16), and the side wall of the alkaline solution box (2) is provided with an alkaline solution discharging port (17).

6. A carbon dioxide absorption device for an anesthesia machine according to claim 5, characterized in that: The control module (13) is used to obtain temperature data collected by the temperature sensor (12), and to control the opening or closing of the temperature reduction device (11) according to the temperature data.

7. A carbon dioxide absorption device for an anesthesia machine according to claim 5, characterized in that: The cooling device (11) comprises a fan or a heat dissipation copper wire (21); the heat dissipation fan (21) is arranged on the inner wall of the absorber tank (1).

8. The carbon dioxide absorption device for an anesthesia machine according to claim 5, characterized in that: The device further comprises: a pH sensor (15) and an alarm device (19); the control module (13) acquires pH data tested by the pH sensor (15), and controls the alarm device (19) to emit an alarm sound when the pH value is greater than a first threshold value.

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