Laminar flow purification surgical shelter

Abstract

The utility model medical equipment technical field especially points to a laminar flow purification operation shelter. Laminar flow purification operation shelter includes: cabin body, including independent first cavity and second cavity, be equipped with air conditioning unit and outer air flue in first cavity, be equipped with inner air flue in second cavity, air conditioning unit has the return air outlet that sets up towards second cavity and the fresh air outlet that connects outer air flue entrance, return air outlet is equipped with return air primary efficiency filter unit, fresh air outlet is equipped with fresh air primary efficiency filter unit, the middle section mounting of inner air flue has medium efficiency filter unit, the last section mounting of inner air flue has at least one high efficiency filter unit, wherein, high efficiency filter unit includes high efficiency filter and installs the damping net of high efficiency filter air supply face, damping net guides the air flow that new air outlet discharged into laminar flow state. The utility model realizes operation shelter's thousand level cleanliness requirement and airflow laminar flow.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a laminar flow purification surgical cabin. Background Technology

[0002] As a core mobile platform for surgery in special environments, the surgical mobile unit plays an irreplaceable role in diverse emergency scenarios thanks to its three core advantages: high mobility, strong environmental adaptability, and high cleanliness. In the military field, it can provide immediate surgical support for troops in wartime or field operations, significantly shortening the evacuation time of the wounded by deploying medical resources in advance and minimizing the risk of worsening injuries due to transport delays. In civilian emergency scenarios, whether at the scene of natural disasters such as earthquakes, floods, and fires, or in the emergency response to sudden major public health events, it can be quickly set up as a temporary surgical site to carry out emergency surgical rescue as soon as possible, filling critical gaps in on-site medical resources.

[0003] However, the application of surgical mobile units is still limited by the inherent characteristics of the field environment and their own hardware conditions. On the one hand, the field environment is highly uncertain, with large fluctuations in temperature and humidity and a lot of dust and impurities. When faced with large and complex surgeries involving deep tissues (such as the brain, thoracic cavity, and abdominal cavity) and vital organs such as the heart, liver, and kidneys, the internal space, equipment configuration, and environmental control capabilities of the mobile unit cannot meet the stringent requirements of high-precision surgery for sterility, constant temperature, and constant humidity. Such surgeries can only be performed by transferring patients to a standardized fixed hospital in the rear. On the other hand, the dynamic changes in the field environment can cause the condition of the injured or sick to deteriorate rapidly, and the timeliness of the surgery is directly related to the success rate of treatment and the prognosis of the injured or sick.

[0004] However, the current supporting surgical cabins generally only achieve a cleanliness level of 10,000 or 100,000 in the surgical area, which is far from meeting the cleanliness requirements for large and complex surgeries. At the same time, most cabins do not adopt a laminar flow purification design, which cannot achieve directional and stable airflow in the operating room. Unstable airflow may not only carry pollutants to surgical instruments and drugs, causing damage to the sterile state, but also interfere with the concentration of medical staff, indirectly increasing the surgical risk and reducing the overall surgical success rate. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses a laminar flow purification surgical cabin.

[0006] The technical solution adopted in this utility model is as follows: A laminar flow clean operating room includes: The cabin includes a separate first cavity and a second cavity; the first cavity is equipped with an air conditioning unit and an external air duct; the second cavity is equipped with an internal air duct. The air conditioning unit has a return air inlet facing the second cavity and a fresh air inlet connected to the inlet of the external air duct; the return air inlet is equipped with a return air primary filter unit; the fresh air inlet is equipped with a fresh air primary filter unit; A medium-efficiency filter unit is installed in the middle section of the internal air duct; at least one high-efficiency filter unit is installed in the end section of the internal air duct. The high-efficiency filtration unit includes a high-efficiency filter and a damping mesh installed on the air supply surface of the high-efficiency filter; the damping mesh guides the airflow discharged from the fresh air inlet into a laminar flow state.

[0007] In one embodiment of the present invention, the internal air duct is arranged at the top of the second cavity along the length direction of the second cavity.

[0008] In one embodiment of the present invention, a plurality of high-efficiency filter units are installed at the end of the inner air duct; the plurality of high-efficiency filter units are evenly distributed along the inner air duct.

[0009] In one embodiment of this utility model, the external air duct and the internal air duct are connected by a bend.

[0010] In one embodiment of this utility model, a static pressure box is provided at the bend connection between the external air duct and the internal air duct, and the static pressure box is located between the medium-efficiency filter unit and the high-efficiency filter unit.

[0011] In one embodiment of the present invention, the air conditioning unit includes a bracket fixed to a first cavity, an outdoor unit fixed to the bracket, and an indoor unit connected to the outdoor unit; the indoor unit supplies air into the second cavity.

[0012] In one embodiment of this utility model, an air valve is provided between the primary fresh air filter unit and the secondary filter unit.

[0013] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: The laminar flow purification surgical cabin of this utility model can isolate external environmental interference by dividing the cabin into independent cavities and setting up a split air duct system; it can remove particles of different sizes in stages and control the air flow direction by adopting multi-stage filtration units and airflow guiding devices. Attached Figure Description

[0014] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0015] Figure 1 This is the front view of the laminar flow purification surgical cabin of this utility model.

[0016] Figure 2 This is a side view of the laminar flow purification surgical cabin of this utility model.

[0017] Figure 3 This is a side view of the laminar flow purification surgical cabin (air conditioner outdoor unit not shown) of this utility model.

[0018] Explanation of reference numerals on the accompanying drawings: 10. Cabin; 101. External air duct; 102. Internal air duct; 20. Return air pre-filter unit; 30. Medium-efficiency filter unit; 40. High-efficiency filter unit; 401. High-efficiency filter; 402. Damping screen; 50. Static pressure box; 60. Air conditioning unit; 601. Outdoor unit; 602. Bracket; 603. Indoor unit; 70. Fresh air pre-filter unit; 80. Air valve. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0020] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present utility model. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0021] In existing technologies, surgical pods, as core mobile platforms for surgical procedures in emergency scenarios, possess high mobility and environmental adaptability. However, their internal cleanliness typically only reaches Class 10,000 or Class 100,000 standards, which is insufficient to meet the stringent sterile environment requirements of large and complex surgeries involving deep tissues and major organs. Most existing pods do not employ laminar flow purification designs, resulting in unstable airflow within the pod. This can lead to contaminants coming into contact with surgical instruments or interfering with medical staff's operations, increasing surgical risks. For example, in outdoor environments, fluctuations in temperature and humidity, along with dust and impurities, exacerbate the difficulty of air quality control, making it impossible for surgical pods to effectively maintain a constant laminar flow.

[0022] To address the aforementioned issues, a surgical cabin structure capable of achieving stable laminar flow purification is needed. Existing technologies lack a systematic design for air handling units and duct layouts, resulting in a lack of directional flow after the mixing of fresh and return air, leading to reduced filtration efficiency. By dividing the cabin into independent cavities and implementing a split duct system, external environmental interference can be isolated; employing multi-stage filtration units and airflow guiding devices can remove particles of different sizes in stages and control airflow direction. The key lies in how to optimize the structure to ensure that the air, after efficient filtration, forms a uniform laminar flow while avoiding turbulence.

[0023] Therefore, combining Figures 1 to 3 This embodiment proposes a cabin structure 10 comprising an independent first cavity and a second cavity. An air conditioning unit 60 and an external air duct 101 are housed within the first cavity, while an internal air duct 102 is housed within the second cavity. The air conditioning unit 60 is configured with a return air vent facing the second cavity and a fresh air vent connecting to the inlet of the external air duct 101. A return air pre-filter unit 20 is installed at the return air vent, and a fresh air pre-filter unit 70 is installed at the fresh air vent. A medium-efficiency filter unit 30 is installed in the middle section of the internal air duct 102, and a high-efficiency filter unit 40 is installed at the end section. The high-efficiency filter unit 40 includes a high-efficiency filter 401 and a damping mesh 402 installed on its air supply surface.

[0024] The chamber 10 refers to two independent spaces formed by a physical isolation barrier, which can be achieved by splicing a metal frame and composite panels. The chamber separation prevents external pollutants from directly entering the surgical area. The air conditioning unit 60 is a device with air temperature and humidity control functions. The external air duct 101 and internal air duct 102 are duct structures that guide airflow. The return air pre-filter unit 20 is a device that intercepts large particulate pollutants, specifically using a G3-level non-woven fabric filter, installed at the front end of the return air inlet to pre-purify the circulating air, mainly used to filter dust particles larger than 5μm. The fresh air pre-filter unit 70 is a device that pre-treats external air, specifically using an F7-level bag filter, installed at the fresh air inlet, mainly used to filter dust particles larger than 5μm. The medium-efficiency filter unit 30 is a device for removing medium-sized particles. Specifically, it can be an F9-level plate filter, mainly used to capture particulate dust and various suspended matter of 1μm-10μm. It is arranged in the middle section of the internal air duct 102 to receive the air after the pre-filter. It can serve as the front-end filter for the high-efficiency filter unit 40 to reduce the load on the high-efficiency filter and extend its service life. The high-efficiency filter 401 is a device for filtering fine particles. Specifically, it can be an H13-level HEPA filter, mainly used to capture particulate dust and various suspended matter larger than 0.3μm. A damping mesh is installed at the end to reduce the airflow velocity and evenly distribute the airflow through the mesh structure.

[0025] Specifically, after external air is pre-treated by the fresh air pre-filter unit 70, the treated air mixes with the return air purified by the return air pre-filter unit 20 in the second chamber and enters the inner air duct 102. The air flows through the medium-efficiency filter unit 30 to further remove particulate matter, and then undergoes final purification in the high-efficiency filter unit 40. The damping mesh 402 adjusts the airflow speed and direction to create a vertically downward laminar flow of air passing through the high-efficiency filter 401, covering the critical operating surfaces of the surgical area. The bent connection structure between the outer air duct 101 and the inner air duct 102 extends the air handling path.

[0026] This embodiment further proposes that the internal air duct 102 is arranged at the top of the second cavity along the length direction of the second cavity. The length direction of the second cavity refers to the direction extending along the long axis of the cabin 10 in the internal space of the cabin 10. Specifically, it can be set to a direction parallel to the long side of the cabin 10, so as to optimize the airflow path and reduce airflow resistance.

[0027] Specifically, when the internal air duct 102 is arranged along the length of the top of the second cavity, its extension direction is consistent with the long axis of the cabin 10. By fixing the internal air duct 102 to the top, the upper space of the cabin 10 can be fully utilized, avoiding the occupation of the operating space in the surgical area. The lengthwise arrangement of the internal air duct 102 allows the airflow to be evenly distributed along the longitudinal direction of the cabin 10. Combined with the cooperation of the high-efficiency filter 401 and the damping mesh 402, it further ensures that laminar air covers the entire surgical area, reducing local turbulence or dead zones.

[0028] This embodiment further proposes that multiple high-efficiency filter units 40 are installed at the end of the inner air duct 102; the multiple high-efficiency filter units 40 are evenly distributed along the inner air duct 102. Here, even distribution refers to the arrangement of the multiple high-efficiency filter units 40 at the end of the inner air duct 102, which can be achieved by an equidistant layout, ensuring the uniformity of airflow in the spatial dimension by covering different areas of the second cavity.

[0029] Specifically, after initial purification by the medium-efficiency filter unit 30, the air enters the final section of the inner air duct 102, where it undergoes secondary filtration by multiple high-efficiency filter units 40. Because the high-efficiency filter units 40 are evenly arranged along the inner air duct 102, the airflow resistance in the coverage area of ​​each unit tends to be consistent, ensuring that the air is evenly distributed to different filter units as it passes through, avoiding excessively high or low local flow velocities. The damping mesh 402 further adjusts the filtered air into a laminar flow state, forming a stable and uniform airflow field.

[0030] This embodiment further proposes a bent connection between the outer air duct 101 and the inner air duct 102. The bent connection refers to the connection between the outer air duct 101 and the inner air duct 102 via a non-linear path, which can be achieved using an arc-shaped transition section. This reduces turbulence by changing the airflow direction.

[0031] Specifically, the external air duct 101 and the internal air duct 102 are connected by a bend structure, so that after the fresh air enters the external air duct from the air conditioning unit, its flow direction changes at the bend before entering the internal air duct. The structure at the bend connection is designed to guide the airflow to change direction smoothly, avoiding sudden changes in flow velocity caused by a direct connection.

[0032] This embodiment further proposes that in the laminar flow purification surgical cabin, a static pressure box 50 is provided at the bend connection between the external air duct 101 and the internal air duct 102, and the static pressure box 50 is located between the medium-efficiency filter unit 30 and the high-efficiency filter unit 40.

[0033] Among them, the static pressure box 50 refers to the box structure used to stabilize airflow and evenly distribute air pressure. Specifically, it can be realized by using a sealed cavity made of metal or polymer materials. Its internal space is optimized to reduce airflow speed and eliminate eddies.

[0034] Specifically, when air enters the external air duct 101 from the medium-efficiency filter unit 30, the plenum chamber 50 is configured to receive and buffer the airflow as it passes through the bend connection. By increasing the flow cross-sectional area, the flow velocity is reduced, ensuring that the air is fully mixed and the pressure is evenly distributed before entering the high-efficiency filter unit 40. The installation position of the plenum chamber 50 is specifically designed to simultaneously perform the dual functions of eliminating turbulence at the bend and connecting the two-stage filter units, ensuring that the air inlet surface of the high-efficiency filter unit 40 is always in a stable pressure environment.

[0035] This embodiment further proposes that the air conditioning unit 60 includes a bracket 602 fixed to the first cavity, an outdoor unit 601 fixed to the bracket 602, and an indoor unit 603 connected to the outdoor unit 601; the indoor unit 603 supplies air to the second cavity. The bracket 602 refers to the support structure that supports the outdoor unit, which can be implemented using a metal frame. Its function is to form a rigid connection between the outdoor unit 601 and the first cavity, preventing vibration transmission during equipment operation. The outdoor unit 601 refers to the compressor and condenser module of the air conditioning system, forming a refrigerant circulation loop with the indoor unit 603 through pipes. Its design of being fixed to the bracket 602 reduces the risk of displacement during equipment operation. The indoor unit 603 refers to the evaporator and air supply module of the air conditioning system, connected to the second cavity through air ducts. Its separate structure from the outdoor unit 601 reduces the overall size of the equipment occupying space in the first cavity, while simultaneously enabling independent control of the air supply path.

[0036] This embodiment further proposes that an air valve 80 is provided between the primary fresh air filter unit 70 and the medium-efficiency filter unit 30 in the surgical cabin.

[0037] Among them, the air valve 80 refers to a device used to adjust or control the air flow. Specifically, it can be implemented by a manual regulating valve or an electric regulating valve. By adjusting the opening of the air valve 80, the mixing ratio of fresh air and return air is changed, thereby controlling the total air volume entering the inner air duct 102.

[0038] Specifically, during the operation of the air conditioning unit, external fresh air is initially purified by the fresh air pre-filter unit 70 before entering the external air duct 101, while the air inside the cabin is recycled through the return air pre-filter unit 20. When the concentration of dust in the external environment is high, the proportion of fresh air can be appropriately reduced to reduce the entry of pollutants; when the temperature and humidity inside the cabin need to be quickly adjusted, the proportion of fresh air can be increased to accelerate air replacement. The regulated mixed airflow passes sequentially through the medium-efficiency filter unit 30 and the high-efficiency filter unit 40, ultimately forming a stable laminar flow state covering the surgical area.

[0039] The working principle of this utility model is as follows: The air conditioning unit 60 is installed in the first cavity of the cabin 10 via a bracket 602. The air ducts, namely the external air duct 101 and the internal air duct 102, are used to deliver air from the air conditioning unit 60 to designated areas, ensuring that air is fully distributed to every corner of the cabin, improving indoor comfort. A multi-stage filtration unit is installed in the air ducts. A unidirectional airflow pattern is adopted. Air flows in a single direction at a uniform speed, from the air supply port to the air exhaust port, ensuring that air particles always move along a specific direction, without turbulence or loops.

[0040] The laminar flow clean operating room passed the cleanliness test and met the requirement that the number of particles larger than or equal to 0.5 μm in the ambient air be less than or equal to 35,200 particles / m³. 3 (35.2 particles / L); the number of particles greater than or equal to 5 μm is less than or equal to 293 particles / m 3 (0.3 particles / L) After micro-wind speed test, the air supply velocity on the cross section 0.1m below the air supply surface is uniformly distributed between 0.1m / s and 0.4m / s, which meets the requirements of Class 1000 flow and laminar flow.

[0041] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A laminar flow purification surgical cabin, characterized in that, include: The cabin (10) includes a separate first cavity and a second cavity; the first cavity is provided with an air conditioning unit (60) and an external air duct (101); the second cavity is provided with an internal air duct (102). The air conditioning unit (60) has a return air inlet facing the second cavity and a fresh air inlet connected to the inlet of the external air duct (101); the return air inlet is provided with a return air primary filter unit (20); the fresh air inlet is provided with a fresh air primary filter unit (70). A medium-efficiency filter unit (30) is installed in the middle section of the internal air duct (102); at least one high-efficiency filter unit (40) is installed in the end section of the internal air duct (102). The high-efficiency filtration unit (40) includes a high-efficiency filter (401) and a damping mesh (402) installed on the air supply surface of the high-efficiency filter (401); the damping mesh (402) guides the air flow discharged from the fresh air inlet into a laminar flow state.

2. The laminar flow purification operating room according to claim 1, characterized in that, The internal air duct (102) is arranged at the top of the second cavity along the length of the second cavity.

3. The laminar flow purification operating room according to claim 1, characterized in that, Multiple high-efficiency filter units (40) are installed at the end of the inner air duct (102); the multiple high-efficiency filter units (40) are evenly distributed along the inner air duct (102).

4. The laminar flow purification operating room according to claim 1, characterized in that, The external air duct (101) and the internal air duct (102) are connected by a bend.

5. The laminar flow purification operating room according to claim 4, characterized in that, A static pressure box (50) is provided at the bend connection between the external air duct (101) and the internal air duct (102), and the static pressure box (50) is located between the medium-efficiency filter unit (30) and the high-efficiency filter unit (40).

6. The laminar flow purification operating room according to claim 1, characterized in that, The air conditioning unit (60) includes a bracket (602) fixed to the first cavity, an outdoor unit (601) fixed to the bracket (602), and an indoor unit (603) connected to the outdoor unit (601); the indoor unit (603) supplies air into the second cavity.

7. The laminar flow purification operating room according to claim 1, characterized in that, An air valve (80) is provided between the primary fresh air filter unit (70) and the secondary filter unit (30).

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