KR20210013198A - Maternal and child quarantine - Google Patents

Abstract

The present invention relates to a single-mother and child-type isolation treatment table including a treatment table main body 1, and an air discharge groove 3 for forming a sterilization and disinfection system, a fan 2 and a doctor-patient isolation wind wall in the interior of the treatment table main body 1 ) Is installed, and the air outlet groove (3) communicates with the worktable (11) of the treatment table body (1), the wind inlet of the fan (2) inhales outside air, and the sterilization and disinfection system is connected to the wind inlet of the fan (2). The air outlet of the fan (2) communicates with the air discharge groove (3), and the air discharge groove (3) has a first groove (31) and a treatment table (1) arranged parallel to the longitudinal direction of the treatment table main body (1). Includes two second groove bodies 32, which are respectively disposed along the width direction of ), and the two second groove bodies 32 communicate with the first groove body 31, respectively, and from the first groove body 31 to the second groove body ( A damper 4 that can expand and contract up and down is installed at the connection portion with the 32), and the damper 4 controls the on-off of the connection between the first groove body 31 and the second groove body 32. This maternal and child-type isolation treatment table ensures the health of medical personnel by isolating aerosols and medical personnel emitted by patients with infectious diseases, and at the same time, it is possible to smoothly block work and save energy consumption by adjusting the duct combination mode according to changes in the environment. I can.

Description

Maternal and child quarantine

TECHNICAL FIELD The present invention relates to the field of medical device technology, and more particularly, to a single-mother and child-type isolation treatment table.

The single-mother and child-type isolation treatment table is a cabinet for placing objects on the main body of the treatment table. The transmission sources of respiratory tract infectious diseases are mainly patients with infectious pathogens, and the methods of transmission of respiratory diseases are mainly direct contact, indirect contact, (short distance) droplet transmission and (short and long distance) air transmission. Based on the contents summarized in the literature, short-range radio waves in air propagation are more threatening than long-distance radio waves, so it is important to study the propagation of pathogens within about 1.5 m of the human body. The propagation of pathogens around the patient makes it easy for medical staff who interact with the patient to become infected during the treatment process, and the design of the treatment table with the function of isolating the existing doctor-patient has a very complex structure and a relatively high manufacturing cost. The device that is installed in the main body of the treatment table and isolates the doctor-patient is effectively isolated through the method of forming a damp sheet, but the design that is installed in the treatment table and made by blowing the passage of the damp sheet is relatively single, so its smoothness is relatively low. In order to form a completely enclosed isolation space between the doctor and the patient, the treatment table device must be placed in the prescribed location of the examination room, so it is affected by the location limitation when installing the treatment table device, and the reliability of protection for the medical personnel is realized. In order to do this, after the improvement of the treatment table device, the overall energy consumption of the device is relatively high, and energy is wasted.

Based on the disadvantages of the prior art, the present invention provides a single-mother and child-type isolation treatment table, which isolates the aerosol and medical personnel emitted when a patient with an infectious disease receives treatment, thereby ensuring the health of the medical personnel. The duct combination mode can be adjusted according to environmental changes to smoothly cut off work and save energy consumption.

Based on this, the present invention provides a maternal and child-type isolation treatment table including a treatment table main body, in which an air discharge groove for forming a sterilization and disinfection system, a fan and a doctor-patient isolation wind wall is installed, and the air discharge groove Is in communication with the worktable of the treatment table main body, the wind inlet of the fan sucks in outside air, the sterilization and disinfection system communicates with the wind inlet of the fan, and the wind outlet of the fan communicates with the air outlet groove, and the air outlet groove Includes a first groove body disposed parallel to the length direction of the treatment table main body and two second groove bodies respectively disposed along the width direction of the treatment table main body, and the two second groove bodies each communicate with the first groove body A damper capable of vertically extending and contracting is installed at a portion of the first groove body connected to the second groove body, and the damper controls on-off of the connection between the first groove body and the second groove body.

Optionally, grooves are respectively installed on the two inner walls of the first groove body opposite to each other, and protrusions corresponding to the grooves are installed on both sides of the damper, and the protrusions are located in the grooves and are slidably connected to the grooves. .

Optionally, the maternal and child-type isolation treatment table further includes a controller, and a driving device for driving the damper to vertically expand and contract is installed in the treatment table main body, and the driving device is electrically connected to the controller.

Optionally, the blowing speed of the fan is 2m/s to 4m/s.

Further, an exhaust port corresponding to the air exhaust groove is installed in the worktable of the treatment table main body, and the air exhaust groove has a U-shaped structure.

Optionally, at least one drain plate is installed inside the first groove body, and the drain plate causes the doctor-patient isolation wind wall to face the patient seated direction, and a narrow angle between the drain plate and the first groove body Is between 15° and 25°.

Optionally, the drain plates are disposed parallel to each other, and the spacing between the drain plates is equal.

Optionally, a first chamber and a second chamber are provided inside the treatment table main body, the fan allows a positive pressure and negative pressure difference to be formed between the first chamber and the second chamber, and the sterilization and sterilization system comprises the first chamber The air outlet groove is installed in the second chamber, and an intake port is installed on a side wall of the treatment table main body, and the intake port communicates with the first chamber.

Further, an air storage box is installed in the second chamber, an inlet of the air storage box communicates with a wind outlet of the fan, and an outlet of the air storage box communicates with the first groove.

Optionally, the maternal and child-type isolation treatment table further comprises a main control unit, a detection unit for detecting wind speed, and a control module including a touch screen installed in the main body of the treatment table, wherein the touch screen is electrically connected to the main control unit. And the main control unit is electrically connected to the detection unit, the fan, the sterilization and disinfection system, and the controller, respectively.

If the embodiment of the present invention is implemented, it has the following advantageous effects.

The fan installed inside the maternal isolation treatment table of the present invention allows a positive pressure and negative pressure difference to be formed inside the treatment table body, and the air discharge groove in communication with the wind outlet of the fan forms an isolation damp sheet between the patient and the medical personnel. Strengthening the isolation effect of the patient's saliva and/or aerosols in the course of verbal communication between the patient and the medical personnel with the disease; The wind inlet of the fan and the sterilization and disinfection system work in combination to effectively inhale the saliva that can carry infectious agents such as pathogens and bacteria spit out by the patient, and through the sterilization and disinfection system, the sterilization and disinfection system is carried out in a timely manner, and the patient's saliva And/or preventing the aerosol from radiating and spreading in the air, thereby preventing a threat to the health of medical personnel; The purifier can complete the circulating use of air in the environment by transferring clean air that has undergone sterilization and disinfection back to the air discharge groove by a fan to support the formation of the isolation damp sheet again. The air discharge groove includes a first groove body parallel to the length direction of the treatment table main body and two second groove bodies arranged along the width direction of the treatment table main body, and both ends of the first groove body communicate with the second groove body, respectively. A damper installed to form a damp sheet with better protection between the damp sheet formed by the sieve and the damp sheet formed by the two first grooves, and to expand and contract vertically at the connecting portion between the first and second grooves. Can smoothly control the on-off of each of the two second grooves and the first groove, so when the isolation treatment table is installed in an environment where it is isolated using foreign materials, the withdrawal of the damper is Through the situation in which the communication between the groove body and the first groove body is effectively isolated, smooth control and adjustment of the duct can be realized, and energy consumption in actual work can be saved.

Furthermore, the grooves installed in the first groove body to allow the damper to vertically expand and contract provide a rail with reliability in the movement of the damper to ensure smoothness of the vertical expansion and contraction movement of the damper; The up and down motion of the damper is controlled by the controller, so the operation control process is very simple; The drainage plate that causes the isolation damp sheet installed inside the first groove to incline in the direction of the patient causes the damp sheet to form a narrow angle of 15° to 25° along the normal direction of the first groove body and exit from the first groove body. The damp sheet controls the gas exhaled by the patient within one small area behind it, so that the gas does not easily reach the breathing area of the medical personnel, thus reaching the purpose of preventing the propagation of contaminated gas best. It is possible to reduce the risk of cross-infection of aerosols in the real environment by blocking gas exchange between doctors and medical personnel. Drainage plates arranged parallel to each other and with equal spacing can make the damp sheet formed in the first groove more evenly uniform; This isolation treatment table further includes an air storage box to collect the gas discharged by the fan, secure a constant wind pressure, and evenly discharge air through the first groove to form a static pressure damping sheet with uniform strength. Effectively assuring the reliability of isolating patients and medical personnel; The operation of the entire quarantine treatment table is controlled by the control module, so the degree of automation is relatively high, and it has relatively high adaptability in the actual use process.

1 is a schematic view of a separation structure of a single-parent isolation treatment table described in this embodiment;
Figure 2 is a schematic view of the air flow direction of the maternal and child isolation treatment table described in this embodiment;
3 is a schematic view of the structure of an air discharge groove described in this embodiment;
Figure 4 is a schematic diagram of the enlarged structure of the location A in Figure 3;
Fig. 5 is a schematic view of a cross-sectional structure of a first groove body described in the present embodiment;
6 is a schematic diagram of positions of test points in a first air discharge duct and a second air discharge duct on both left and right sides;
7 is a schematic view of positions of test points in the third air discharge ducts on both left and right sides;
8 is a configuration diagram in a control group case 0 condition;
9 is a configuration diagram in Scenario 5Case 2 condition;
Figure 10 is a configuration diagram in Scenario 5Case 5 condition;
11 is a configuration diagram in Scenario 5Case 8 condition;
12 is a configuration diagram in Scenario 1Case1 condition;
13 is a configuration diagram in Scenario 1Case 2 condition;
14 is a configuration diagram in Scenario 1Case 3 condition;
15 is a line graph of the average mole fraction (×10 ^-4 ) of the trace gas around the mouth of a medical personnel at different blowing speeds and blowing angles.

Hereinafter, the technical solutions of the embodiments of the present invention will be described more clearly and completely in conjunction with the drawings in the embodiments of the present invention, but the described embodiments are only some embodiments of the present invention, not all embodiments. Obviously, in the embodiments of the present invention, all other embodiments obtained under the premise that a person of ordinary skill in the art to which the present invention pertains does not make any progressive efforts fall within the protection scope of the present invention.

It should be understood in the description of the present invention that the orientation or positional relationship indicated by "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and the present invention is easily described. This is only for simplifying the description and is not intended to indicate or imply that the indicating device or element has a specified orientation, a specified orientation structure and operation, and thus should not be understood as a limitation to the present invention.

Referring to Figures 1 to 5, the single-mother and child-type isolation treatment table described in this preferred embodiment includes a treatment table main body 1, and a sterilization and disinfection system, a fan 2 and a doctor-patient inside the treatment table main body 1 An air discharge groove (3) for forming an isolation wind wall is installed, the air discharge groove (3) communicates with the worktable (11) of the treatment table main body (1), and the wind inlet of the fan (2) provides external air. Inhalation and the sterilization and disinfection system is in communication with the wind inlet of the fan (2), the wind outlet of the fan (2) is in communication with the air outlet groove (3), and the air outlet groove (3) is the treatment table main body (1) And a first groove body 31 arranged parallel to the longitudinal direction of the treatment table body 1 and two second groove bodies 32 respectively arranged along the width direction of the treatment table main body 1, and the two second groove bodies 32 Each of the first groove body (31) and the connection portion of the first groove body (31) to the second groove body (32) is provided with a vertically expandable damper (4), the damper (4) is the first It controls the on/off of the connection between the groove body 31 and the second groove body 32.

In the case of using this single-mother and child-type isolation treatment table based on the above structure, if one side close to the patient in the treatment table body (1) is the front end, the side close to the medical personnel is the rear end, and the first groove (31) of the air discharge groove (3) ) Is arranged parallel to the longitudinal direction of the treatment table main body 1 and is close to the front end of the treatment table main body 1, and the fan 2 makes the difference between the positive and negative pressures formed inside the treatment table main body 1 so that the wind inlet The air can be sucked in the environment through the air outlet, and the air after the sterilization and disinfection system purified by the wind outlet is discharged from the air discharge groove 3 to realize the circulating use of air in the environment. In the process of exchange between the patient and the medical personnel, the positive pressure wind wall formed by the air exhaust groove (3) located between the patient and the medical personnel isolates the gas, aerosol or saliva carrying the contagious source exhaled by the patient and spreads it to the medical personnel. To ensure the safety of medical personnel by preventing them; Substances carrying germs, such as gas exhaled by the patient, are sucked into the interior of the treatment table body 1 by the action of the fan 2, first pass through the sterilization and disinfection system, and then completely effectively sterilize and disinfect them, and are then purified into clean air. Air in the environment is prevented from threatening the health of medical personnel due to propagation or dissipation of carried substances in the air, and the purified air is discharged along the air discharge groove (3) to continuously provide replenished gas to the wind wall. By using two means to block, absorb, and sterilize the gas carrying bottle venom, it can effectively prevent the phenomenon of cross-infection of aerosols in the process of exchange between doctors and patients, thereby ensuring the safety of medical personnel. have. The air discharge groove (3) includes a first groove (31) and two second grooves (32), and the two second grooves (32) communicate with both ends of the first groove (31), respectively, so that the fan (2) The gas discharged from the first groove body 31 diffuses through the second groove bodies 32 on both sides of the first groove body 31 to form a wind wall structure with relatively good airtightness, and the first groove body 31 is connected to the second groove body 32 A damper (4) is installed to expand and contract vertically in the part, and the damper (4) controls the on-off of the connection between the first groove body (31) and the second groove body (32). When using this isolation treatment table, if this isolation treatment table is When installed in the center of the room, the two second grooves 32 are simultaneously operated to form a wall surrounded by three sides of the first groove 31 and the formed wind wall, thereby separating the gas expelled by the patient. In order to ensure that air flows from the first groove body 31 to the second groove body 32 on both sides at the same time, the supply of wind speed from the first groove body 31 should be improved, thereby consuming energy. Will improve; If the wall is placed close to the wall on either side of the room, at this time, the wall is the wind wall discharged by the first groove body 31 and the wind wall discharged by the second groove body 32 on the other side as a medium for physical isolation. As the airtight structure is formed at this time, the second groove body 32 on one side close to the wall may not perform wind outflow, so that the first groove body 31 only needs to supply wind to the second groove body 32 on one side. The installation of the damper 4 can smoothly cope with this use situation, and if the second groove 32 on one side does not need to operate, the damper 4 can be directly adjusted to block it, so the operation control method is simple. It has a reliable principle and can control a certain amount of energy consumption in the process of use. The overall structure of the maternal isolation treatment table is very simple and very practical.

Here, grooves 311 are installed on the two inner walls of the first groove 31 to face each other, and protrusions 41 corresponding to the grooves 311 are installed on both sides of the damper 4, and the protrusions 41 are It is located in the groove 311 and is slidably connected with the groove 311. Using this connection type, the vertical expansion and contraction of the damper 4 is adjusted, and the vertical expansion and contraction movement of the damper 4 is driven in the treatment table main body 1 A driving device for driving is installed, and the driving device is electrically connected to the controller, and under the control of the controller, the driving device drives the damper 4 so that the protrusion 41 thereof moves up and down in the groove 311 so that the first groove body 31 ) And the second groove (32) to realize the on-off, and the process of adjusting the vertical motion of the damper (4) is very simple, but the work effect is reliable. In this embodiment, the air discharge groove 3 uses a U-shaped structure, that is, the second groove 32 and the first groove 31 are arranged perpendicular to each other, so that the wind wall discharged from the air discharge groove 3 is medical The shape of the air discharge groove 3 in other embodiments is not limited to this embodiment, and a suitable shape is selected according to actual demand as long as it can provide reliable protection to medical personnel in other embodiments. Thus, a suitable wind wall can be formed. The worktable 11 of the treatment table main body 1 is provided with an exhaust port 111 corresponding to the air discharge groove 3, and the exhaust port 111 forms a U-shaped structure in the work table 11 of the treatment table main body 1 The air in the air discharge groove 3 is discharged more evenly. Referring to FIG. 1, two third grooves 33 are further installed on the rear side of the treatment table main body 1, the third groove 33 is distributed in a vertical direction, and the end of the third groove 33 is a second groove ( The wind wall formed by mixing with each other between the first groove body 31, the second groove body 32 and the third groove body 33 in communication with the end portion of 32) can provide more comprehensive isolation protection to medical personnel. .

In addition, at least one drain plate 5 is installed inside the first groove 31. In this embodiment, the number of drain plates 5 is preferably two, and the drain plate 5 has a pseudo-patient isolation wind wall. The patient faces the seated direction, and the narrow angle between the drain plate 5 and the first groove 31 in the normal direction is 15° to 25°, and in this embodiment, this narrow angle is preferably 20°, whereby the first groove ( 31) The wind wall discharged from the patient controls the gas exhaled by the patient to one area behind the patient so that the gas exhaled by the patient does not reach the breathing area of the medical personnel, thereby reaching the purpose of suppressing the spread of germs and the airflow around the medical personnel. The hot plume is not directly affected by the damp sheet, so its hot plume develops normally, so that the airflow between the patient and the medical personnel is relatively well blocked, and at the same time, the risk of aerosol infection in the real environment can be reduced. Each drainage plate 5 is arranged parallel to each other so that the air between each drainage plate 5 is discharged along the same direction, so that the strength of the formed wind wall can be secured, and the distance between each drainage plate 5 is equal. Thus, the clean air discharged from the fan 2 is uniformly distributed between the drain plates 5, thereby ensuring the uniformity of the wind outflow in the first groove 31, thereby further enhancing the working effect of the isolation damp sheet formed therein. You can make it good. A first chamber and a second chamber are provided inside the treatment table main body 1, the fan 2 allows a positive pressure and negative pressure difference to be formed between the first chamber and the second chamber, and the sterilization and disinfection system is installed in the first chamber. The air discharge groove (3) is located in the second chamber, and an intake port (12) is installed on the side wall of the treatment table main body (1), the intake port (12) communicates with the first chamber, and the inlet port (12) is It is located on both sides of the left and right sides to make it convenient to sterilize and quickly inhale the gas expelled by the patient, thereby improving absorption efficiency, and the negative pressure provided by the fan (2) to the first chamber guarantees the reliability of inhaling the gas carrying germs. The sterilization and disinfection system is located between the intake port 12 and the fan 2 to provide efficient sterilization and disinfection work for the inhaled air and provides the efficiency of generating clean air. And clean air is transported to the second chamber through the fan 2 and is sent out at a positive pressure through the air discharge groove 3 to form an isolation wind wall. The sterilization and sterilization system includes a primary filter net, a sterilization unit and a high-efficiency filter connected in sequence, and the intake port 12 communicates with the primary filter net, and the high-efficiency filter communicates with the wind inlet of the fan 2 to be connected to the intake port 12 The gas that can carry the germs and bacteria expelled by the patient is sequentially introduced into the fan 2 through the primary filter net, the sterilization unit and the high-efficiency filter net, and the purification unit includes several sterilization and disinfection procedures. It is possible to secure the mass of purification work by performing highly efficient and reliable purification of air.

An air storage box 6 is installed in the second chamber, the inlet of the air storage box 6 communicates with the wind outlet of the fan 2, and the outlet of the air storage box 6 communicates with the first groove 31 And clean air is sent to the air storage box 6 through the fan 2 to maintain the air pressure introduced into the air storage box 6 through the air storage box 6, and the air pressure in the air storage box 6 is a constant value. After reaching the air storage box 6, it gradually flows out of the first groove body 31 and is uniformly discharged through the first groove body 31, and flows into the second groove bodies 32 on both sides of the air storage box. It forms a sheet, has uniform strength, and has good isolation effect. In the working process of the air storage box 6, the wind outflow condition of the first groove 31, the second groove 32 on both left and right sides, and the third groove 33 on both left and right sides is tested and detected, Referring to 7, these are a schematic diagram of the position of each test point detected by the first groove body 31 and the second groove body 32 on both left and right sides during the test process and the position of each test point detected by the third groove body 33 In bar, specific test data are as statistically shown in Tables 1 and 2 below.

Table 1 shows test data at each test point of the first groove 31, the left second groove 32, and the left third groove 33;

Data group Noise/dB Wind speed m/s Full extreme difference 1st groove body Left second groove Left third groove One 2 3 4 5 6 7 Extreme difference 8 9 10 11 Extreme difference 12 13 14 15 Extreme difference One 48 2.39 2.74 2.61 2.52 2.39 2.35 2.44 0.39 3.08 3.17 3.17 3.01 0.16 2.21 2.95 2.95 3.02 0.81 0.96

Table 2 shows test data at each test point of the first groove 31, the right second groove 32, and the right third groove 33;

Data group Noise/dB Wind speed m/s Full extreme difference 1st groove body Right second groove Right third groove One 2 3 4 5 6 7 Extreme difference 8* 9* 10* 11* Extreme difference 12* 13* 14* 15* Extreme difference 2 48 2.44 2.57 2.65 2.78 2.82 2.35 3.21 0.86 2.13 2.13 1.98 1.98 0.15 2.09 2.09 2.01 1.98 0.11 1.23

In general, before installing the air storage box, the extreme difference in wind speed at each air exhaust groove in the entire isolation device is between 1.5m/s and 2.0m/s. As can be seen by observing the test data, the air storage box (6) ), the difference in wind speed in each air discharge groove body in the isolator after mounting) is greatly reduced. That is, each air discharge groove body can have a good isolation effect by forming a static pressure damping sheet having a uniform strength. It should be described here that in this embodiment, the air storage box 6 selects a Y funnel-type structure, and the inlet of the air storage box 6 is located at its side, and the outlet of the air storage box 6 is located at its top. The length of the outlet of the air storage box (6) is equal to the length of the first groove (31), and the air input to the air storage box (6) by the fan (2) is automatically classified to both sides, so that clean air is relatively uniform. The design of the Y-funnel shape reduces the resistance of the air so that the air is smoothly passed to the first groove 31, thereby ensuring smooth air circulation. However, in other embodiments, the structural shape design of the air storage box 6 is not limited to this embodiment, and a suitable shape type of the air storage box 6 may be selected according to actual demand. A soundproofing device is further installed in the air storage box 6, which can reduce the noise generated during the operation of the air storage box 6, and the fan 2 is mounted inside the maternal and child-type isolation treatment table through the shock absorber. It is possible to effectively reduce the vibration generated in the operation process, and to reduce the noise of the fan (2) and to work in combination with the soundproofing device of the air storage box (6) to provide a better experience to the user and to achieve relatively good use effect. Can be reached.

Furthermore, the mother-and-child isolation treatment table further includes a control module. The control module includes a main control unit, a detection unit for detecting wind speed, and a touch screen installed on the treatment table body 1, and the touch screen is electrically connected to the main control unit. The main control unit is electrically connected to the detection unit, fan (2), sterilization and sterilization system, and the controller, respectively, and the main control unit can receive wind speed information fed back by the detection unit, and the operation performed by the user through the touch screen. The fan (2) and the purification unit can be adjusted and controlled according to the actual situation, and the size of the wind speed and the operating situation of the sterilization and disinfection system are changed according to the actual situation. It is possible to improve the wind speed by controlling the control unit to ensure the strength of the wind wall, and the wind wall discharged by the second groove body 32 by supplying wind to the two second groove bodies 32 at the same time by the first groove body 31 It can block gas, aerosol and saliva carrying bottle venom by guaranteeing the reliability of the bottle, thereby effectively ensuring the safety of medical personnel, so that the level of automation in the whole process can be high and it can be convenient to use. In addition, the user can control the control of the controller by the main control unit through the touch screen, the controller controls the driving device to control the vertical expansion and contraction state of the damper 4, and the first groove body 31 suitable according to the actual use situation. It is possible to save energy consumption by selecting ON and OFF between the and the two second grooves 32.

The best isolation effect when the damp sheet is placed at 20° toward the patient's direction is the conclusion obtained through research through the CFD simulation technology test, and the concrete argumentation process is as follows.

By studying the isolation effect using the airflow isolation protection device through the CFD simulation technology, different parameters have an influence on the isolation effect, mainly including the speed of the damp sheet ventilator and the airflow angle. In addition, proposals for improvement were submitted for the optimal design of the protective device from these two areas. Under the conditions of this simulation, the protective device is located in the center of the room, and the midpoint of the line connecting the medical personnel and the patient is the center point of the room. As for the relevant parameters in the geometric model, the size of the protective device, the size and location of the air vent and the vent are all set up according to the known parameters of the actual product, and a reasonable simplification was performed. Since the main function of the damp sheet is to isolate the aerosol of pathogenic microorganisms expelled by the patient, this simulation focuses on the patient's breathing and the doctor's breathing situation by briefly briefing the state where the patient and the doctor breathed simultaneously in real situations.

The setup of the CFD model and the installation of boundary conditions, and the geometric model determined first are shown in Table 3.

Geometric model size name Size(m) Hydraulic diameter (m) Quantity Room 4(x)×3(y)×5(z) The patient breathes by mouth (33℃) 0.012 One Doctor's mouth 0.012 One Protective device vent 0.05×0.0055 0.0099 76 (where 52 are located on the surface of the body frame body) Protective device vent 0.281×0.0946 0.14 2

Install the simulation conditions again, but refer to the contents shown in Table 4.

Install simulation conditions Scenario Case Patient's breathing situation Blowing angle of damp sheet θ(°) Blowing speed of damp sheet (m/s) 0 (control group) Respiration rate 1 m/s, trace gas mole fraction 0.04 No damp sheet Changes the two air holes on the side of the protective device into one ventilation opening and one ventilation opening, blowing 0.25 m/s One One 0 2 2 0 3 3 0 4 2 4 20 2 5 20 3 6 20 4 3 7 40 2 8 40 3 9 40 4 4 One 0 2 4 20 2 7 40 2 5 2 0 3 5 20 3 8 40 3 6 3 0 4 6 20 4 9 40 4

Note: Blowing angle θ refers to the narrow angle (°) (toward the patient's direction) between the blowing direction of the longitudinal air outlet on the upper surface of the body frame body 1 and its normal direction. In the simulation process, the gas component exhaled by the patient is represented by the tracer gas, and all calculated configuration diagrams indicate the distribution of the mole fraction of the tracer gas. Case 0 is set as the control group and the body frame body (1) is set to have no damp sheet. 8 is the configuration diagram of Case 0. If the gas component exhaled by the patient is represented by the tracking gas, these diagrams all refer to the distribution of the mole fraction of the tracking gas. The airflow exhaled by the patient is entrained by the hot plume generated above the patient's head, rising above the head, and moving towards one wall. In the ventilation system of the same room, the number of ventilation without damp sheet is less than that of ventilation with damp sheet, so the number of ventilation in Case 0 is relatively small and the time for pollutants to stay is relatively long. Since there is no blocking of the damp sheet, the patient's airflow turns around in the room, so the concentration of the tracer gas around the doctor's mouth is relatively high (multiple times of other Case 0), and the doctor's exposure time is relatively long. Therefore, the method of reducing the risk of infection for doctors by installing a damp sheet is very effective.

As can be seen from the simulation process, the effect of the ventilation angle on the isolation effect of the protective device is to study the effect of different ventilation angles on the gas expelled by the patient and the contamination trajectory, taking Scenario 5 (Case 2, 5, 8) as an example. Referring to FIGS. 9, 10 and 11, the configuration diagrams in Case 2, Case 5, and Case 8 are respectively corresponded, and the following conclusions are obtained by comparing the distribution of mole fractions of one side of the patient in each drawing.

1. On the basis of Case 2, the blowing angle is adjusted to 20°, and the cold air discharged by the first air exhaust duct 3 of the body frame body 1 controls the gas exhaled by the patient to one area behind the patient. It achieves the purpose of suppressing the spread of germs by not reaching the breathing area of medical personnel. Since the airflow around the medical personnel is not directly affected by the damp sheet, its hot plume develops normally. This situation can reduce the risk of aerosol infection in a real environment while allowing the airflow between the patient and the medical personnel to be relatively well blocked. 2. In Case 8, the ventilation direction of the damp sheet is inclined toward the patient side again, the ventilation angle is adjusted to 40°, the airflow between the patient and the doctor is freely communicated, and the concentration of tracer gas in the breathing area around the doctor's mouth is relatively high. As a result, the damp sheet becomes ineffective. At this time, the ventilation angle of the damp sheet is so low that the air flow is easily aspirated by the airflow exhaled by the patient, and even the airflow is suppressed by the airflow exhaled by the patient with a relatively high temperature. This is because the airflow exhaled can be freely moved to the doctor's area beyond the direct blower flow. However, at the same time, since the action of the air hole on the short side of the body frame body 1 interferes with and suppresses the motion of the airflow exhaled by the patient, the airflow exhaled by the patient finally leaves the direction of the doctor and moves behind the patient.

Summarizing the above, the conclusions obtained in the overall simulation process are as follows. The isolation effect of the blowing angle of 20° (Case 4, 5, 6) is better than that of 0° (Case 1, 2, 3) and 40° (Case 7, 8, 9). Compared to 0°, the blower flow at 20° has a single action surface inclined toward the patient, so that it has a better inhibitory effect on the gas exhaled by the patient, thereby discharging contaminants into the space behind the patient; At a blowing angle of 40°, the airflow becomes too inclined to almost reach the height of the patient's mouth, and the airflow exhaled directly reaches the bottom of the patient's mouth under the entrainment of the airflow that the patient exhaled. It becomes impossible.

As can be seen from the simulation process, the influence of the blowing speed on the isolation effect of the protective device is studied by taking Scenario 1 (Case 1, 2, 3) as an example to study the effect of the different blowing speed on the gas expelled by the patient and the contamination trajectory. Referring to FIGS. 12, 13, and 14, the configuration diagrams in Case 1, Case 2, and Case 3 are respectively corresponded, and the following conclusions are obtained by comparing the distribution of mole fractions on one side of the patient in each drawing.

1.Because the ventilation speed of the damp sheet is not high in the situation of Case 1, the contaminants emitted by the patient can easily cross the damp sheet and move from a high place (closer to the ceiling) to the doctor's side, so the isolation of the damp sheet can be secured. There will be no. This is because the ventilation angle of the damp sheet is vertically upward and the air flow of the damp sheet is directed slightly more toward the patient side by the entrainment action of the airflow released by the patient shortly after the relatively weak airflow is discharged due to the low speed. to be. In addition, since the density of the airflow exhaled by the patient is greater than that of the air, the contaminants can sink down, and the body frame body 1 rotates at the bottom and sides to reach the doctor's breathing area. The specific risk of infection is related to factors such as the type of contaminant, exposure time, and infection threshold. Therefore, in this situation, although the damping sheet acts on the surface close to the body frame body 1, the action is limited, so it is necessary to further block the exchange of air flow between the two people by increasing the blowing speed of the protection device.

2. In Case 2, the ventilation speed of the damp sheet is increased to 3m/s. At this time, the blower flow forms a relatively complete damp sheet so that contaminants from the left patient are basically blocked on the left side of the damp sheet so that only a few can reach the right side of the damp sheet. The exhaled airflow is directed toward the blower flow, which can cause a relatively strong entrainment effect on the airflow expelled by the patient because the speed of the blower flow is relatively large; On the other hand, the relatively cold air flow is scattered in all directions in the room and even destroys the hot plume by forming a constant temperature layer in the room (hot in the top-cold in the middle and low in the middle).

3. Case 3 is a situation where the ventilation speed of the damp sheet is increased to 3m/s. The reinforced damp sheet can completely isolate the two because the relatively cold, relatively high-velocity blower flow is directed directly to the ceiling, forming a powerful “damp sheet barrier” between the doctor and the patient. In this situation, the chances of contaminants reaching the doctor's breathing area are smaller and are generally discharged by vents on both sides of the protective device before reaching the doctor's side. However, as can be seen from the simulation process, the average concentration of the gas exhaled by the patient in the ceiling area above the doctor's head is rather higher than the situation where the blowing velocity of the damp sheet in Case 2 is 3m/s, and in the breathing area of the doctor. It increases the risk of contamination. This is because the entrainment action of the airflow, which has a relatively high velocity for the gas expelled by the patient, is stronger, and the density of the mixture gas can be more easily subsided by the doctor as the difference in density of the surrounding air increases. Therefore, the larger the blowing speed, the better.

To summarize the above, see Fig. 15, which is a line graph of the average mole fraction of the tracer gas near the mouth of the medical personnel at different blowing angles and blowing speeds.Conclusion obtained by referring to the entire simulation process and combining this line graph Is as follows.

1. The isolation effect of the blowing angle of 20° (Case 4, 5, 6) is better than that of 0° (Case 1, 2, 3) and 40° (Case 7, 8, 9). Compared to 0°, the blower flow at 20° has a single action surface inclined toward the patient, so that it has a better inhibitory effect on the gas exhaled by the patient, thereby discharging contaminants into the space behind the patient; At a blowing angle of 40°, the airflow becomes too inclined to almost reach the height of the patient's mouth, and the airflow exhaled directly reaches the bottom of the patient's mouth under the entrainment of the airflow that the patient exhaled. It becomes impossible.

2. The isolation effect of 3m/s (Cases 2, 5, 8) of blowing speed is better than that of 2m/s (Cases 1, 4, 7) and 4m/s (Cases 3, 6, 9). The reason is that the damp sheet strength formed by the blowing speed of 2 m/s is not sufficient, the aerosol discharged when the patient speaks has a constant speed, and the resistance of the damp sheet formed by a wind speed of 3 m/s is 2 m/s. Since the wind speed is greater than the resistance of the formed damp sheet, the formed damp sheet with a blowing speed of 2 m/s is destroyed by the patient's airflow at a position close to the ceiling, so that the patient's airflow flows to the doctor's side; The blowing speed of 4m/s also enhances the degree of congestion of the airflow in the room to deepen the mixing of air in the room so that the airflow exhaled by the patient fills the entire room; The blowing speed of 4m/s is discharged at a relatively high speed so that the patient can feel the wind, so it can affect the comfort and experience of the patient and the medical personnel, and the fan forming a wind speed of 4m/s is Since it generates a relatively large noise and consumes too much energy, the cost is relatively high, and the wind speed is preferably 3 m/s in this embodiment.

3. The entrainment effect of the dead flow of the damp sheet and the hot plume of the human body was implemented in the simulation. The gas exhaled by the patient at different damping sheet air velocity is affected by different entrainment actions. For example, for Case 2 and Case 3, when the ventilation speed of the damp sheet is relatively small, the entrainment effect caused by the hot plume of the human body has a leading effect on the movement of the gas expelled by the patient, and the exhaled gas is applied to the hot plume above the head. Captured by and heated up; When the ventilation speed of the damp sheet is relatively large, the entrainment effect caused by the slip flow of the damp sheet causes a leading effect.The gas exhaled by the patient is rolled up in the damp sheet and moves together along the air flow of the damp sheet, while also reducing contamination. It is surrounded and controlled by a damp sheet, reducing the risk of infection for the doctor.

The fan installed inside the maternal isolation treatment table of the present invention allows a positive pressure and negative pressure difference to be formed inside the treatment table body, and the first discharge duct in communication with the wind outlet of the fan forms an isolation damp sheet between the patient and the medical personnel. Strengthening the isolation effect of the patient's saliva and/or aerosol in the course of verbal communication between patients with respiratory diseases and medical personnel; The fan's wind inlet and the purification unit work in combination to effectively inhale saliva that can carry infectious agents such as pathogens and bacteria spit by the patient, and through the purification unit, the patient's saliva and/or Or by preventing the aerosol from radiating and spreading in the air, thereby preventing a threat to the health of medical personnel; The clean air that has been sterilized and disinfected by the purifier can be transferred back to the first air discharge duct by a fan to support the formation of the isolation damp sheet again, thereby completing the circulation and use of air in the environment. The air discharge groove includes a first groove body parallel to the length direction of the treatment table main body and two second groove bodies arranged along the width direction of the treatment table main body, and both ends of the first groove body communicate with the second groove body, respectively. A damper installed to form a damp sheet with better protection between the damp sheet formed by the sieve and the damp sheet formed by the two first grooves, and to expand and contract vertically at the connecting portion between the first and second grooves. Is able to smoothly control the on-off of each of the two second grooves and the first grooves, so if the mother-and-child isolation treatment table is installed in an environment where it is isolated using external materials, the withdrawal of the damper is Through the situation in which the communication between the second groove body and the first groove body is effectively isolated, smooth control and adjustment of the duct can be realized, and energy consumption in actual work can be saved.

It should be understood that in the present invention, the terms “first” and “second” may be used to describe various types of information. These terms are only used to distinguish information of the same type from each other, and such information is used in these terms. It should not be limited. For example, in a situation that does not depart from the scope of the present invention, “first” information may be referred to as “second” information, and similarly, “second” information may be referred to as “first” information.

The above description is a preferred embodiment of the present invention, which should be pointed out by those of ordinary skill in the technical field to which the present invention pertains, under the premise of not departing from the principles of the present invention, some changes and modifications can be made. Changes and modifications should also be regarded as belonging to the scope of the present invention.

1: treatment table main body, 11: worktable, 111: exhaust port, 12: intake port, 2: fan, 3: air exhaust groove, 31: first groove, 311: groove, 32: second groove, 33: third groove, 4: damper, 41: protrusion, 5: drain plate, 6: air storage box

Claims (10)

Including a treatment table main body, and an air discharge groove for forming a sterilization and sterilization system, a fan and a doctor-patient isolation wind wall is installed inside the treatment table main body, and the air discharge groove communicates with the work table of the treatment table main body. The wind inlet sucks in outside air, the sterilization and disinfection system communicates with the wind inlet of the fan, the wind outlet of the fan communicates with the air outlet groove, and the air outlet groove is arranged parallel to the longitudinal direction of the treatment table main body. 1 groove body and two second groove bodies respectively disposed along the width direction of the treatment table main body, and the two second groove bodies each communicate with the first groove body, and a connection portion between the first groove body and the second groove body In the maternal and child type isolation treatment table, a damper that can be stretched up and down is installed, and the damper controls on/off of a connection between the first groove body and the second groove body. The method of claim 1,
Each of the two inner walls of the first groove body is provided with grooves, and protrusions corresponding to the grooves are installed on both sides of the damper, and the protrusions are located in the grooves and are slidably connected to the grooves. Single-mother and child-type isolation treatment table. The method of claim 1,
A mother-and-child isolation treatment table further comprising a controller, wherein a driving device for driving the damper to vertically expand and contract is installed in the treatment table main body, and the driving device is electrically connected to the controller. The method of claim 1,
The blowing speed of the fan is 2m/s to 4m/s. The method of claim 1,
An exhaust port corresponding to the air exhaust groove is installed in the worktable of the treatment table main body, and the air exhaust groove has a U-shaped structure. The method according to any one of claims 1 to 5,
At least one drain plate is installed inside the first groove body, and the drain plate causes the doctor-patient isolation wind wall to face the patient's seated direction, and the narrow angle between the drain plate and the first groove body in a normal direction is 15° Single-mother and child quarantine treatment table, characterized in that ~25°. The method of claim 6,
Each of the drain plates is arranged parallel to each other, and the spacing between the drain plates is equal. The method of claim 1,
A first chamber and a second chamber are provided inside the treatment table main body, the fan allows a positive pressure and negative pressure difference to be formed between the first chamber and the second chamber, and the sterilization and sterilization system is installed in the first chamber. The air discharge groove is located in the second chamber, an intake port is installed on a side wall of the treatment table main body, and the intake port communicates with the first chamber. The method of claim 8,
An air storage box is installed in the second chamber, an inlet of the air storage box communicates with a wind outlet of the fan, and an outlet of the air storage box communicates with the first groove. The method of claim 3,
Further comprising a control module including a main control unit, a detection unit for detecting wind speed, and a touch screen installed in the main body of the treatment table, wherein the touch screen is electrically connected to the main control unit, and the main control unit detects the A single-mother and child-child isolation treatment table, characterized in that the unit, the fan, the sterilization and disinfection system, and the controller are electrically connected respectively.

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