Biosafety cabinet for treating cytotoxic drugs

Abstract

The utility model discloses a biological safety cabinet for treating cytotoxic drugs, which relates to the field of medical equipment and comprises a safety cabinet body and an air purification system. The safety cabinet body is provided with an air inlet communicated with the atmosphere, the safety cabinet body is provided with a plurality of working chambers, and each working chamber is provided with an air return port and an air outlet; the air purification system comprises a main air duct, a branch air duct and an exhaust duct; the first end of the main air duct is communicated to the air outlets of the working chambers through the branch air ducts, and the first end of the main air duct is communicated to the atmosphere through the exhaust duct; a main filter is arranged at the second end of the main air duct and communicated to the air return opening and the air inlet, and the main air duct is provided with a main fan. The internal circulation purification of the air in the safety cabinet body can be well realized, the air can be updated at the same time, the safety of the air in the safety cabinet can be effectively ensured, and aerosol pollution is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment field, in particular to a biological safety cabinet of processing cytotoxic drug. BACKGROUND

[0002] Cytotoxic drug preparation can cause harm to the reproductive system, urinary system, liver and kidney system, and teratogenic effect through skin contact or inhalation. Nursing staff exposed to cytotoxic waste for a long time is prone to occupational damage. Therefore, the current trend is to use automated liquid preparation equipment to assist or replace medical staff in liquid preparation.

[0003] The current common automatic drug liquid preparation equipment, such as the full-function liquid drug preparation intelligent robot and its dispensing method disclosed in the patent document with announcement number CN102151228B. There is a hidden danger when using this scheme, because the device has a large preparation capacity, different drugs have different preparation methods, and medical staff are involved. After a long time of preparation, aerosol pollution is likely to occur. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a biological safety cabinet for processing cytotoxic drugs, which can well realize internal circulation purification of the air in the safety cabinet body and complete updating, effectively ensuring the safety of the air in the safety cabinet and avoiding aerosol pollution.

[0005] The utility model solves the technical problems by adopting the following technical scheme: a biological safety cabinet for processing cytotoxic drugs, characterized by comprising a safety cabinet body and an air purification system.

[0006] The safety cabinet body is provided with an air inlet communicating with the atmosphere, and the safety cabinet body is provided with a plurality of working chambers, and the working chambers are provided with an air return port and an air outlet.

[0007] The air purification system comprises a main air duct, branch air ducts and an exhaust air duct.

[0008] The first end of the main air duct is communicated to the air outlets of the working chambers through the branch air ducts, and the first end of the main air duct is communicated to the atmosphere through the exhaust air duct.

[0009] The second end of the main air duct is provided with a main filter, the main filter is communicated to the air return port and the air inlet, and the main air duct is provided with a main fan.

[0010] The scheme adopts the main air duct and branch air duct to circulate the air in the chamber, adopts the main fan to provide power, filters the air flowing out of the chamber through the main filter, and then flows back to the chamber, so as to achieve the purpose of purifying the air in the chamber. On the one hand, only part of the air in the main air duct flows back to the chamber, and the other part flows to the atmosphere through the exhaust air duct, on the other hand, the main filter is connected with the atmosphere, and the negative pressure generated by the main fan draws the atmosphere into the chamber to mix with the air in the chamber, so as to achieve the effect of supplementing and updating the circulating air.

[0011] Preferably, each of the branch air duct and the exhaust air duct is provided with an electronic valve. The gas flow ratio of the branch air duct and the exhaust air duct can be controlled through the electronic valve.

[0012] Preferably, a static pressure tank is arranged between the branch air duct and the air outlet. The gas can be more uniformly supplemented into the chamber.

[0013] Preferably, the gas inlet end of the static pressure tank is provided with a high-efficiency filter. The air can be filtered again before entering the chamber, so as to improve the filtering effect of the air.

[0014] Preferably, the main filter is a V-shaped filter. The surface area is larger, and the filtering efficiency is improved.

[0015] Preferably, the main air duct is provided with a water-cooled heat exchanger. The heat generated by the equipment in the chamber can be cooled before the air enters the main air duct.

[0016] Preferably, the exhaust air duct is provided with an exhaust air chamber, and the exhaust air chamber is provided with a high-efficiency filter. The gas exhausted to the atmosphere can be filtered and purified.

[0017] Preferably, the exhaust air duct is provided with an exhaust fan. The power of the air flow in the exhaust air duct is improved.

[0018] Preferably, the door and window of each working chamber are provided with a sealing strip. The air exchange with the outside through the gap is avoided, and the internal hygiene condition is improved.

[0019] The beneficial effects of the utility model are as follows:

[0020] Through the scheme, the air in the safety cabinet body can be well internally circulated and purified, and the air in the safety cabinet can be effectively ensured to be safe, and aerosol pollution can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only three of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a front perspective view of an embodiment of the present utility model;

[0023] Figure 2 This is a rear perspective view of an embodiment of the present utility model;

[0024] Figure 3 A cross-sectional axonometric view of an embodiment of the present utility model;

[0025] Among them, 1. Safety cabinet body; 2. Return air outlet; 3. Air outlet; 4. Main air duct; 5. Branch air duct; 6. Exhaust duct; 7. Main filter; 8. Air inlet; 9. Main fan; 10. Electronic valve; 11. Static pressure box; 12. Water-cooled heat exchanger; 13. Exhaust chamber; 14. Exhaust fan. DETAILED DESCRIPTION

[0026] In order to deepen the understanding of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0027] Example

[0028] like Figure 1 and Figure 2 As shown, a biosafety cabinet for handling cytotoxic drugs comprises a safety cabinet body 1 and an air purification system; the safety cabinet body 1 is provided with an air inlet 8 connected to the atmosphere, combined with Figure 3 As shown, the safety cabinet body 1 is provided with several working chambers, and the working chambers are provided with return air ports 2 and air outlets 3; the air purification system includes a main air duct 4, a branch air duct 5 and an exhaust duct 6; the first end of the main air duct 4 is connected to the air outlet 3 of each working chamber through each branch air duct 5, and the first end of the main air duct 4 is connected to the atmosphere through the exhaust duct 6; the second end of the main air duct 4 is provided with a main filter 7, and the main filter 7 is connected to the return air port 2 and the air inlet 8, and the main air duct 4 is provided with a main fan 9.

[0029] The scheme adopts the main air duct 4 and branch air duct 5 to circulate the air in the chamber, adopts the main fan 9 to provide power, filters the air flowing out of the chamber through the main filter 7, and then flows back to the chamber, so as to achieve the purpose of purifying the air in the chamber. On the one hand, only part of the air in the main air duct 4 flows back to the chamber, and the other part flows to the atmosphere through the exhaust air duct 6, and on the other hand, the main filter 7 is connected to the atmosphere, and the negative pressure generated by the main fan 9 draws the atmosphere into the chamber to mix with the air in the chamber, so as to achieve the effect of supplementing and updating the circulating air.

[0030] Each of the branch air duct 5 and the exhaust air duct 6 is provided with an electronic valve 10. The gas flow ratio of the branch air duct 5 and the exhaust air duct 6 can be controlled through the electronic valve 10.

[0031] The branch air duct 5 and the exhaust air duct 6 are provided with a static pressure tank 11. The gas can be more uniformly supplemented into the chamber.

[0032] The gas inlet end of the static pressure tank 11 is provided with a high-efficiency filter. The air can be filtered again before entering the chamber, thereby improving the filtering effect of the air.

[0033] The main filter 7 is a V-shaped filter. The surface area is larger, and the filtering efficiency is improved.

[0034] The main air duct 4 is provided with a water-cooled heat exchanger 12. The heat generated by the equipment in the chamber can be cooled before the air enters the main air duct 4.

[0035] The exhaust air duct 6 is provided with an exhaust air chamber 13, and the exhaust air chamber 13 is provided with a high-efficiency filter. The gas discharged to the atmosphere can be filtered and purified.

[0036] The exhaust air duct 6 is provided with an exhaust fan 14. The power of the air flow in the exhaust air duct 6 is improved.

[0037] The door and window of each working chamber are provided with a sealing strip. The air exchange with the outside through the gap is avoided, and the internal hygiene condition is improved.

[0038] The beneficial effects of the utility model are as follows:

[0039] The scheme can well realize internal circulation and purification of the air in the safety cabinet body 1, complete updating, effectively ensure the air safety in the safety cabinet, and avoid aerosol pollution.

[0040] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0041] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A biosafety cabinet for handling cytotoxic drugs, characterized in that: It includes a safety cabinet body (1) and an air purification system; The safety cabinet body (1) is provided with an air inlet (8) communicating with the atmosphere, the safety cabinet body (1) is provided with a plurality of working chambers, and the working chambers are provided with return air ports (2) and air outlets (3); The air purification system comprises a main air duct (4), a branch air duct (5) and an exhaust duct (6); The first end of the main air duct (4) is connected to the air outlet (3) of each working chamber through each branch air duct (5), and the first end of the main air duct (4) is connected to the atmosphere through the exhaust duct (6); A main filter (7) is provided at the second end of the main air duct (4), the main filter (7) is connected to the return air port (2) and the air inlet (8), and the main air duct (4) is provided with a main fan (9).

2. A biosafety cabinet for handling cytotoxic drugs according to claim 1, characterized in that: Each of the branch air ducts (5) and exhaust ducts (6) is provided with an electronic valve (10).

3. A biosafety cabinet for handling cytotoxic drugs according to claim 1, characterized in that: A static pressure box (11) is provided between the branch air duct (5) and the air outlet (3).

4. A biosafety cabinet for handling cytotoxic drugs according to claim 3, characterized in that: The air inlet end of the static pressure box (11) is provided with a high efficiency filter.

5. A biosafety cabinet for handling cytotoxic drugs according to claim 4, characterized in that: The main filter (7) is a V-type filter.

6. A biosafety cabinet for handling cytotoxic drugs according to claim 1, characterized in that: The main air duct (4) is provided with a water-cooled heat exchanger (12).

7. A biosafety cabinet for handling cytotoxic drugs according to claim 1, characterized in that: The exhaust duct (6) is provided with an exhaust cavity (13), and the exhaust cavity (13) is provided with a high-efficiency filter.

8. A biosafety cabinet for handling cytotoxic drugs according to claim 7, characterized in that: The exhaust duct (6) is provided with an exhaust fan (14).

9. A biosafety cabinet for handling cytotoxic drugs according to claim 8, characterized in that: The doors and windows of each working chamber are provided with sealing strips.

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