Medical air treatment equipment

Abstract

The utility model discloses medical air treatment equipment, and belongs to the crossing field of medical health instruments and air purification technologies. The equipment comprises a negative pressure suction cover, a flexible telescopic adjusting pipe and an air treatment main machine. One end of the flexible telescopic adjusting pipe is provided with a negative pressure suction cover through a fixing buckle, and the other end of the flexible telescopic adjusting pipe is connected to the bottom of the air treatment host through a suction pipe fixing base. The interior of the air treatment main machine is divided into a lower-layer air inlet cavity and an upper-layer air exhaust cavity through a filtering module. The equipment provides an integrated and efficient air treatment scheme, efficient trapping of aerosol and multiple inactivation of pathogens are achieved by integrating multi-point ultraviolet disinfection and killing, HEPA filtering and local high-risk area directional disinfection and killing, the risk of secondary pollution is reduced, the air safety requirement in a high-infection-risk environment can be met, and the air quality is improved. Wide application prospects are realized in the medical field.

Description

Technical Field

[0001] This utility model provides a medical air treatment device, which belongs to the intersection of medical and health devices and air purification technology. Background Technology

[0002] With advancements in medical technology and increasing demands for medical care, air pollution in healthcare environments has garnered growing attention, particularly in high-risk departments where procedures generate substantial amounts of aerosols. These aerosols may contain viruses, bacteria, and other pathogens. If released into the air, they not only increase the risk of cross-infection between healthcare workers and patients but also severely pollute the air quality of the treatment environment. These aerosols can remain suspended in the air for extended periods, further increasing the risk of cross-infection and threatening the health of healthcare workers and other patients.

[0003] While traditional negative pressure systems can effectively capture aerosols, they typically lack real-time inactivation capabilities, potentially leading to secondary contamination. Furthermore, traditional ultraviolet (e.g., 254nm UVC) disinfection technologies require unmanned environments, failing to meet the real-time disinfection needs of medical procedures. Patient treatment areas sometimes require focused localized disinfection, which traditional equipment struggles to achieve for targeted air and surface purification. Additionally, medical equipment is space-consuming and difficult to move, hindering its flexibility to adapt to different operational scenarios. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a medical air handling device. This device combines negative pressure suction, ultraviolet disinfection, and multi-layer filtration technologies to achieve efficient capture, real-time inactivation, and deep purification of aerosols generated during medical procedures.

[0005] The technical solution adopted in this utility model is: a medical air handling device, which includes a negative pressure suction hood, a flexible and retractable adjustable tube, and an air handling unit;

[0006] One end of the flexible, extendable, and adjustable tube is fitted with a negative pressure suction hood via a fixing buckle, and the other end is connected to the bottom of the air handling unit via a suction tube fixing seat.

[0007] The flexible and retractable adjustable tube adopts a shape memory alloy skeleton and a corrugated tube, and an antibacterial coating is provided inside the flexible and retractable adjustable tube.

[0008] The air handling unit's housing is divided into a lower air intake chamber and an upper air extraction chamber by a filter module. The air intake chamber is equipped with an aerosol sensor and a 275nm ultraviolet module, while the air extraction chamber is equipped with a negative pressure exhaust fan, a 222nm far-ultraviolet module, and an ultraviolet intensity monitor.

[0009] The filtration modules, from bottom to top, consist of a large particulate matter filtration module, a HEPA filtration module, and an activated carbon filtration module.

[0010] The edge of the negative pressure suction hood is provided with a soft sealing ring, and the inner surface of the negative pressure suction hood is provided with an anti-reflective coating.

[0011] The activated carbon filter module is loaded with titanium dioxide photocatalyst.

[0012] The antibacterial coating is a nano-silver coating and a zinc oxide coating.

[0013] The negative pressure suction hood is equipped with a rotatable suction hood far-ultraviolet module at its fixing buckle.

[0014] The far-ultraviolet module of the suction hood uses 222nm far-ultraviolet light.

[0015] The air handling unit has an air outlet at the top and casters at the bottom of its housing.

[0016] The gas flow direction of the device is: negative pressure suction hood → flexible and retractable adjustable tube → air inlet chamber → filter module → air extraction chamber → outside of the air handling unit.

[0017] The beneficial effects of this invention are as follows: The air handling unit of this device integrates aerosol concentration detection, enabling real-time monitoring of air quality. The far-ultraviolet module of the suction hood installed at the negative pressure suction hood port can also perform targeted disinfection of localized high-risk areas, such as operating tables and patient beds, providing targeted air and surface purification and disinfection. This allows for more focused cleaning of high-risk areas, improving the accuracy and efficiency of air purification.

[0018] Highly efficient capture and inactivation: The negative pressure suction mask performs negative pressure suction and, combined with the far-ultraviolet module of the suction mask, can effectively remove aerosols generated during medical procedures, reducing the risk of cross-infection.

[0019] Human-machine coexistence safety design: A 222nm far-ultraviolet module is installed near the air outlet of the air handling unit, which can operate when medical staff are present to achieve real-time disinfection and avoid the limitation of traditional ultraviolet equipment that cannot be used in medical operations.

[0020] Multi-layer filtration and photocatalytic degradation: The combination of large particle filtration module, HEPA filtration module and activated carbon adsorption module ensures efficient removal of microorganisms, particulate matter and harmful gases, while avoiding secondary pollution.

[0021] Flexible modular design: Each functional unit of the equipment can be maintained and replaced independently. At the same time, the negative pressure suction mask and flexible telescopic adjustable tube can be adapted to different medical devices and the air and surface disinfection needs of local areas in different directions, enhancing the flexibility of use and making it suitable for a variety of medical operating environments.

[0022] This device integrates multi-point ultraviolet disinfection, HEPA filtration, and targeted disinfection of high-risk areas to achieve efficient aerosol capture and multiple inactivation of pathogens, reducing the risk of secondary pollution. It can meet the air safety requirements in high-infection-risk environments and has broad application prospects in the medical field. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a medical air handling unit.

[0024] In the diagram: 1. Negative pressure suction hood; 1a. Anti-reflective coating; 2. Fixing buckle; 3. Suction hood far-UV module; 4. Flexible telescopic adjustable tube; 4a. Memory alloy frame; 4b. Corrugated tube; 4c. Antibacterial coating; 5. Straw holder; 6. Air handling unit; 6a. Air handling unit housing; 7. Aerosol sensor; 8. Universal wheel; 9. 275nm UV module; 10. Large particulate matter filter module; 11. HEPA filter module; 12. Activated carbon filter module; 13. Negative pressure exhaust fan; 14. 222nm far-UV module; 15. UV intensity monitor. Detailed Implementation

[0025] The structure and function of this utility model are further described below with reference to the accompanying drawings.

[0026] The flexible and retractable adjustable tube, aerosol sensor, large particulate matter filter module, HEPA filter module, activated carbon filter module, negative pressure exhaust fan, 222nm far ultraviolet module, ultraviolet intensity monitor, etc. used in this application are all commercially available components, and the anti-reflective coating and antibacterial coating are also existing technologies.

[0027] A medical air handling unit includes a negative pressure suction hood 1, a flexible and retractable adjustable tube 4, and an air handling unit 6. One end of the flexible and retractable adjustable tube 4 is connected to the negative pressure suction hood 1 via a fixing buckle 2, and the other end is connected to the bottom of the air handling unit 6 via a suction tube fixing seat 5. A soft sealing ring is provided around the edge of the negative pressure suction hood 1, and an anti-reflective coating 1a is provided on the inner surface of the negative pressure suction hood 1. A far-ultraviolet module 3 is installed at the fixing buckle 2 of the negative pressure suction hood 1; the far-ultraviolet module 3 uses 222nm far-ultraviolet light.

[0028] The flexible and retractable adjustable tube 4 adopts a shape memory alloy skeleton 4a and a corrugated tube 4b, and an antibacterial coating 4c is set inside the flexible and retractable adjustable tube 4; the antibacterial coating 4c adopts a double coating of nano silver coating and zinc oxide coating.

[0029] The air handling unit 6 has a filter module inside its housing 6a, which is divided into a lower air intake chamber and an upper air extraction chamber. The air intake chamber is equipped with an aerosol sensor 7 and a 275nm ultraviolet module 9. The air extraction chamber is equipped with a negative pressure exhaust fan 13, a 222nm far-ultraviolet module 14 and an ultraviolet intensity monitor 15. An air outlet is provided on the top of the air handling unit 6.

[0030] The filtration modules, from bottom to top, consist of a large particulate filter module 10, a HEPA filter module 11, and an activated carbon filter module 12. The activated carbon filter module 12 is loaded with titanium dioxide photocatalyst. This multi-layer filtration system removes large particles, preventing contaminants from entering the high-efficiency filter layer. The HEPA (High Efficiency Particulate Air Filter) module effectively intercepts bacteria, viruses, and microbial debris. Finally, the activated carbon filter module, loaded with photocatalyst, adsorbs volatile organic compounds (VOCs) and odors, and catalytically degrades harmful gases under ultraviolet light.

[0031] The gas flow direction of the device is: negative pressure suction hood 1 → flexible and retractable adjustable tube 4 → air inlet chamber → filter module → air extraction chamber → outside of air handling unit 6.

[0032] Specifically:

[0033] Figure 1 A schematic diagram of a medical air handling unit is shown (a partial cross-section of the flexible, extendable, and adjustable tube 4 in the diagram reveals the antibacterial coating 4c). The unit includes a negative pressure suction hood 1, a flexible, extendable, and adjustable tube 4, and an air handling unit 6.

[0034] The negative pressure suction mask 1 is a semi-enclosed, arc-shaped, variable structure whose shape can be changed according to needs. It is used to be close to the patient's mouth near the source of infection. Its edge is equipped with a soft sealing ring and is connected to a flexible, telescopic, and adjustable tube through a fixing seat. Negative pressure suction ports are arranged on the edge to form a uniform inhalation field and create a locally sealed area with the patient's mouth or the vicinity of the source of infection, effectively capturing aerosols generated by the patient. The fixing buckles 2 inside the negative pressure suction mask integrate the far-ultraviolet module 3 (which is a 222nm far-ultraviolet disinfection module with a radiation dose of 0.5-1.5mW / cm²), which is used for preliminary inactivation of pathogens in aerosols and can also be used for targeted disinfection of air and surfaces in high-risk areas. The inner surface of the negative pressure mask is equipped with an anti-reflective coating 1a (reflectivity <5%) to prevent pathogen adhesion and residue and reduce ultraviolet scattering loss to adapt to the endoscope / bronchoscope operation area.

[0035] The flexible and retractable adjustable tube 4 is composed of a corrugated tube 4b and a shape memory alloy skeleton 4a, with a double-layer antibacterial coating 4c (antibacterial rate > 99%) on the inner wall, and connects the negative pressure suction hood 1 to the air handling unit.

[0036] The air handling unit 6 includes an aerosol sensor 7, a 275nm ultraviolet module 9 (irradiance ≥5mW / cm², residence time ≥0.5 seconds), a large particulate matter filter module 10, a HEPA filter module 11, an activated carbon filter module 12 loaded with titanium dioxide photocatalyst, a negative pressure exhaust fan 13, a 222nm far-ultraviolet module 14, and an ultraviolet intensity monitor 15. The cumulative exposure dose at 222nm during system operation is <20mJ / cm², meeting ACGIH safety standards.

[0037] The air handling unit adopts a multi-stage purification system:

[0038] Aerosol capture: The negative pressure suction hood introduces pathogen-containing aerosols into the air handling unit through flexible pipes, preventing their spread in the medical environment.

[0039] Ultraviolet inactivation: The aerosols first pass through a 275nm ultraviolet disinfection chamber, where high-intensity irradiation and high-energy ultraviolet light destroy the DNA / RNA of pathogens, achieving initial inactivation.

[0040] Multi-layer filtration and purification: The large particulate filter module removes large particles, preventing pollutants from entering the high-efficiency filter layer. The HEPA high-efficiency filter module effectively intercepts bacteria, viruses, and microbial debris. The activated carbon filter module loaded with photocatalyst adsorbs volatile organic compounds (VOCs) and odors, and catalytically degrades harmful gases under ultraviolet light.

[0041] Terminal inactivation: The airflow undergoes final inactivation in a 222nm far-ultraviolet disinfection chamber to ensure safe air discharge, avoid secondary pollution, and ensure an inactivation rate of >99.9%.

[0042] Both the negative pressure suction hood 1 and the air handling unit 6 are equipped with ultraviolet (UV) radiation detectors to monitor UV intensity and prevent excessive radiation exposure. The application of this equipment in medical treatment environments can effectively reduce the risk of pathogen transmission and provide a safe treatment environment for patients and healthcare workers.

[0043] The 222nm far-ultraviolet module 14 at the air outlet of the air handling unit 6 allows the equipment to operate continuously during medical staff use, preventing ultraviolet leakage and potential harm to human health. Installing the 222nm far-ultraviolet module at the negative pressure suction mask opening also allows for targeted disinfection of high-risk areas, such as workbenches and beds. Targeted air purification and disinfection of workbenches and patient beds using far-ultraviolet light allows for more focused cleaning of high-risk areas. The negative pressure suction mask is repositionable to accommodate different instruments such as endoscopes and bronchoscopes. The flexible, extendable, and adjustable tube can be freely adjusted in direction and height to meet different directional needs.

[0044] The above are merely specific embodiments of this utility model patent, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model patent to solve essentially the same technical problem and achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A medical air handling unit, characterized in that: It includes a negative pressure suction hood (1), a flexible and retractable adjustable tube (4), and an air handling unit (6). One end of the flexible telescopic adjustable tube (4) is connected to the negative pressure suction cover (1) via a fixing buckle (2), and the other end is connected to the bottom of the air handling unit (6) via a suction tube fixing seat (5); The flexible and retractable adjustable tube (4) is composed of a shape memory alloy skeleton (4a) and a corrugated tube (4b); The air handling unit (6) divides the internal space of the air handling unit housing (6a) into upper and lower chambers through a filter module. The lower layer of the filter module is the air intake chamber, and the upper layer of the filter module is the air extraction chamber. An aerosol sensor (7) and a 275nm ultraviolet module (9) are installed in the air intake chamber, and a negative pressure exhaust fan (13), a 222nm far ultraviolet module (14), and an ultraviolet intensity monitor (15) are installed in the air extraction chamber. The filter modules, from bottom to top, are a large particulate matter filter module (10), a HEPA filter module (11), and an activated carbon filter module (12).

2. The medical air handling equipment according to claim 1, characterized in that: The edge of the negative pressure suction hood (1) is provided with a soft sealing ring, and the inner surface of the negative pressure suction hood (1) is provided with an anti-reflective coating (1a).

3. The medical air handling equipment according to claim 1, characterized in that: The activated carbon filter module (12) is loaded with titanium dioxide photocatalyst.

4. The medical air handling equipment according to claim 1, characterized in that: The negative pressure suction hood (1) is provided with a rotatable suction hood far-ultraviolet module (3) at the fixing buckle (2).

5. The medical air handling equipment according to claim 4, characterized in that: The far-ultraviolet module (3) of the suction hood uses 222nm far-ultraviolet light.

6. The medical air handling equipment according to claim 1, characterized in that: An air outlet is provided on the top of the air handling unit (6), and casters (8) are provided on the bottom of the air handling unit housing (6a).

7. The medical air handling equipment according to claim 1, characterized in that: The gas flow direction of the device is negative pressure suction hood (1) → flexible and retractable adjustable tube (4) → air inlet chamber → filter module → air extraction chamber → outside of air handling unit (6).

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