A medical ether-proof surgical mask

Abstract

The present invention discloses a medical ether-proof surgical mask to solve the problem of anesthesiologists being exposed to anesthetic tail gas for a long time, which affects their health. Inhaled anesthetics are widely used in clinical practice and are irreplaceable. Existing inhaled anesthetics are mostly volatile liquids containing fluorine. Sevoflurane is currently the most widely used inhaled general anesthetic, which will inevitably leak into the operating room during use. Anesthesiologists are exposed to indoor environments containing anesthetic tail gas for a long time, which will affect their health. In addition to preventing the leakage of inhaled anesthetics and purifying anesthetic tail gas, the anesthesiologists' own protection is also very important. Therefore, the present invention provides a medical ether-proof surgical mask, which is achieved by adding a new ether-philic resin material to the existing N95 standard medical protective mask. After the anesthesiologist wears it, before inhaling air into the mouth and nose, the new ether-philic resin material can adsorb sevoflurane, thereby playing a protective role.

Description

Technical Field

[0001] The invention relates to the field of protection of anesthesiologists from occupational exposure, and more particularly to a medical ether-proof surgical mask. Background Art

[0002] Anesthetic tail gas (including waste gas, the same below) refers specifically to inhaled anesthetics such as sevoflurane (C4H3F7O) which will inevitably leak into the air during general anesthesia in the operating room. The main leakage pathways include the anesthesia technology itself, the delivery system and the removal system of the anesthesia machine. The removal system is the most important procedure to reduce indoor air pollution. However, even if the removal system is perfect, there will still be anesthetic waste gas pollution in the room. This is mainly caused by volatilization when the ether tank is opened, liquid splashing, abnormal opening of the ventilation pipeline, leakage during the use of double-lumen tubes for thoracic anesthesia, leakage caused by laryngeal mask ventilation during general anesthesia, spontaneous breathing during the recovery period of general anesthesia, and sevoflurane mask induction. Here, the mixed gas containing fluoroethers such as sevoflurane that flows through the patient's lung exchange without the anesthesia machine removal system and purification treatment system and is discharged from the AGSS port of the anesthesia machine is collectively referred to as pure anesthetic tail gas. The air pollution in the operating room is mixed with anesthetic tail gas and anesthetic waste gas. These polluted air, especially the anesthetic waste gas, will inevitably be inhaled into the respiratory tract by the anesthesiologist who works closest to the anesthesia machine even in a Class 100 laminar flow operating room. Long-term accumulation will inevitably lead to damage to health.

[0003] Studies have shown that female medical workers exposed to anesthetic exhaust have an increased risk of spontaneous abortion, tumors, liver disease, and kidney disease, and their offspring have an increased risk of congenital abnormalities; male physicians exposed to anesthetic exhaust have an increased risk of liver disease, and their children also have an increased risk of congenital abnormalities. On the other hand, anesthetic exhaust discharged into the air can also cause environmental pollution and trigger the greenhouse effect. In recent years, inhaled anesthetics have been increasingly criticized, and the solution widely discussed in countries around the world is mainly to reduce or not use inhaled anesthetics. However, inhaled anesthetics have been widely used in clinical practice and are an important complementary drug to intravenous anesthetics, and are irreplaceable.

[0004] In view of the fact that even if anesthesia machines are equipped with complete cleaning systems and anesthesia tail gas treatment systems, anesthesiologists will inevitably inhale leakage problems such as sevoflurane, which is unique to the subspecialty of anesthesia. In addition to purifying the air in the operating room environment through mechanical equipment, medical staff can directly reduce the inhalation of anesthesia tail gas by wearing protective equipment. Medical staff can strengthen their own protection and reduce occupational exposure by wearing special protective masks. However, there is no mask specifically used for anti-anesthesia tail gas in the prior art. Therefore, it is necessary to provide a medical anti-ether surgical mask. Summary of the invention

[0005] In view of the above problems, the present invention provides a medical ether-proof surgical mask to solve the problem of anesthesia tail gas exposure for anesthesiologists.

[0006] In order to achieve the above object, the present invention provides a medical ether-proof surgical mask, wherein an ether-philic resin layer is arranged in the mask interlayer.

[0007] The preparation of the ether-affinity resin layer comprises the following steps:

[0008] S1. Pretreatment: The macroporous resin is immersed in a 99.7% ethanol solution for 8 to 12 hours to remove surface impurities, and then vacuum dried at 50 to 100° C. for 3 to 6 hours to obtain the original resin.

[0009] S2. Functional group implantation: The original resin in step S1 is immersed in 0.1-5 mol / L fluorine-containing acid, the volume ratio of the original resin to the fluorine-containing acid is 1:3, and the immersion time is 6-12 hours. After the immersion is completed, it is washed with deionized water or acetone until it is neutral, and then the resin is vacuum dried at 50-100° C. for 3-6 hours to obtain a fluorine-containing resin.

[0010] S3, plasma modification: the fluorine-containing resin in step S2 is placed in a wire tube plasma reactor, and the modification process is excited by a nanosecond pulse power supply, the discharge treatment time is 2 to 15 minutes, the pulse peak voltage is 22 to 28 kV, the pulse repetition frequency is 100 to 200 Hz, and the working gas is one of nitrogen, oxygen, and ammonia or a mixture of two or more to obtain a new ether-philic resin material.

[0011] S4, putting the new ether-affinity resin material between the two layers of meltblown cloth 2 and 4 inside and outside the mask to obtain an ether-affinity resin layer.

[0012] In a preferred embodiment, the medical ether-proof surgical mask has a main body composed of: the first layer is a hydrophobic protective layer, the second layer is an outer melt-blown layer, the third layer is an ether-philic resin layer, the fourth layer is an inner melt-blown layer, and the fifth layer is a skin-friendly layer.

[0013] That is to say, the present invention adheres the new ether-philic resin material in a particle state to the inner layer of the N95 standard medical protective mask.

[0014] In a preferred embodiment, the mass of the new ether-philic resin material is 500-800 mg.

[0015] In addition, the fluorine-containing acid of the present invention refers to hydrofluoric acid, fluorosulfuric acid; or other fluorine-containing substances, such as one or more of trifluoromethyltrimethylsilane, perfluorooctanoic acid, ethoxycarbonyldifluoromethyl, and tridecafluorooctyltrimethoxysilane.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention adopts a newly developed ether-affinity adsorption resin material, which has a super large adsorption capacity and a high affinity for mixed gases containing fluorine groups such as sevoflurane and toxic compounds produced by sevoflurane and soda lime. The special type of medical ether-proof surgical mask obtained by adding ether-affinity adsorption resin to the medical mask of N95 standard is the last line of defense for self-protection of anesthesiologists who are in close contact with inhaled anesthetics. In an operating room equipped with a complete anesthesia tail gas removal system and a purification treatment system, the anesthesia tail gas pollution is only at the ppm level, mainly concentrated between the breathing circuit of the anesthesia machine and the patient's airway, so that the anesthesiologists who are in close contact will inevitably inhale the respiratory tract. The existing medical surgical mask (national standard YY0469--2011) is the mainstream protective equipment worn by medical staff in the operating room. It is mainly used to prevent splashing and plays a physical barrier role. It belongs to the first-level protective equipment. Since it does not require tightness, it does not have the self-priming and filtering anti-ether function. Medical protective masks with N95 standards for protection level 2 or above can filter more than 95% of non-oily particles. The carriers of bacteria and viruses are non-oily particles in nature, but they have no filtering effect on macromolecular gases. According to tests, under the specified air flow conditions, the ether-proof mask of the present invention can filter out up to 99% of macromolecular substances such as sevoflurane, achieving the best protective effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a design drawing of a special type of medical ether-proof surgical mask.

[0019] Among them, 1. hydrophobic protective layer, 2. outer melt-blown layer, 3. ether-philic resin layer, 4. inner melt-blown layer, 5. skin-friendly layer. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, the third layer of a special type of medical ether-proof surgical mask of the present invention is an ether-philic resin layer 3, and the granular resin is added between the inner and outer layers of melt-blown cloth 2 and 4.

[0021] The preparation of the ether-affinity resin layer specifically comprises the following steps:

[0022] S1. Pretreatment: The macroporous resin is immersed in a 99.7% ethanol solution for 8 to 12 hours to remove surface impurities, and then vacuum dried at 50 to 100° C. for 3 to 6 hours to obtain the original resin.

[0023] S2. Functional group implantation: The original resin in step S1 is immersed in 0.1-5 mol / L fluorosulfuric acid, the volume ratio of the original resin to the fluorine-containing acid is 1:3, and the immersion time is 6-12 hours. After the immersion is completed, it is washed with deionized water or acetone until it is neutral, and then the resin is vacuum dried at 50-100° C. for 3-6 hours to obtain a fluorine-containing resin.

[0024] S3, plasma modification: the fluorine-containing resin in step S2 is placed in a wire tube plasma reactor, and the modification process is excited by a nanosecond pulse power supply, the discharge treatment time is 2 to 15 minutes, the pulse peak voltage is 22 to 28 kV, the pulse repetition frequency is 100 to 200 Hz, and the working gas is one of nitrogen, oxygen, and ammonia or a mixture of two or more to obtain a new ether-philic resin material.

[0025] S4, placing the granular ether-affinity resin new material between the two inner and outer layers of meltblown cloth 2 and 4 of the mask to obtain an ether-affinity resin layer 3.

[0026] In a preferred embodiment, in step S1, the macroporous resin is immersed in ethanol for 10 hours, the drying temperature is 70° C., and the drying time is 4 hours.

[0027] In a preferred embodiment, the concentration of fluorosulfuric acid in step S2 is 1 mol / L, the immersion time is 10 h, the drying temperature is 80° C., and the drying time is 4 h.

[0028] In a preferred embodiment, the discharge time in step S3 is 6 min, the pulse peak voltage is 28 kV, the pulse repetition frequency is 150 Hz, and the working gas is 300 mL / min nitrogen and oxygen (the volume ratio of nitrogen to oxygen is 1:4).

[0029] In a preferred embodiment, the mass of the new ether-philic resin material is 500-800 mg.

[0030] The main body of the special type medical ether-proof surgical mask comprises: a hydrophobic protective layer 1, an outer melt-blown layer 2, an ether-philic resin layer 3, an inner melt-blown layer 4, and a skin-philic layer 5.

[0031] The special medical anti-ether surgical mask is designed according to the standard of sterile medical protective masks (implementing the national standard GB19083-2019 "Technical Requirements for Medical Protective Masks"), and an ether-philic resin particle layer 3 is added between the inner and outer layers of meltblown fabrics 2 and 4. The technical indicators of medical protective masks are non-oily fine particles with a diameter of 0.3 μm, a barrier effect of more than 95%, and a filtration efficiency of 100% for bacteria of 2 μm, and good adhesion and other indicators.

[0032] The protection principle of special medical ether-proof surgical masks:

[0033] On the basis of the protection of medical N95 masks, under good sealing conditions, the new ether-philic adsorption resin material added between the two layers of meltblown cloth has a large adsorption capacity for sevoflurane macromolecules. Each mask adds approximately 500 to 800 mg of new ether-philic adsorption resin material, which can absorb up to 99% of trace sevoflurane leaked during anesthesia, protecting the personal health of anesthesiologists and solving the problem of iatrogenic occupational exposure.

[0034] Among them, the plasma modification device in the present invention is a product of Dalian Power Technology Co., Ltd., which mainly includes a nanosecond pulse power supply, a high-voltage electrode, a working gas nitrogen, a working gas oxygen, a working gas ammonia, a wire tube reactor, and a low-voltage electrode.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medical ether-proof surgical mask, characterized in that: The mask interlayer is provided with an ether-philic resin layer (3); the preparation of the ether-philic resin layer specifically comprises the following steps: S1. Pretreatment: The macroporous resin is immersed in a 99.7% ethanol solution for 8 to 12 hours to remove surface impurities, and then vacuum dried at 50 to 100° C. for 3 to 6 hours to obtain the original resin; S2, functional group implantation: the original resin in step S1 is immersed in 0.1-5 mol / L fluorine-containing acid or fluorine-containing substance, the volume ratio of the original resin to the fluorine-containing acid or fluorine-containing substance is 1:3, the immersion time is 6-12 hours, after the immersion is completed, it is washed with deionized water or acetone until it is neutral, and then the resin is vacuum dried at 50-100° C. for 3-6 hours to obtain a fluorine-containing resin; S3, plasma modification: the fluorine-containing resin in step S2 is placed in a wire tube plasma reactor, and the modification process is excited by a nanosecond pulse power supply, the discharge treatment time is 2 to 15 minutes, the pulse peak voltage is 22 to 28 kV, the pulse repetition frequency is 100 to 200 Hz, and the working gas is one of nitrogen, oxygen, and ammonia or a mixture of two or more to obtain a new ether-philic resin material; S4. Place the new ether-affinity resin material between the inner and outer layers of the meltblown fabric (2) and (4) of the mask to obtain an ether-affinity resin layer (3).

2. The medical ether-proof surgical mask according to claim 1, characterized in that: The mask comprises: the first layer is a hydrophobic protective layer (1), the second layer is an outer melt-blown layer (2), the third layer is an ether-philic resin layer (3), the fourth layer is an inner melt-blown layer (4), and the fifth layer is a skin-friendly layer (5).

3. The medical ether-proof surgical mask according to claim 1, characterized in that: The fluorine-containing acid or fluorine-containing compound refers to one or more of hydrofluoric acid, fluorosulfuric acid, trifluoromethyltrimethylsilane, perfluorooctanoic acid, ethoxycarbonyldifluoromethyl, and tridecafluorooctyltrimethoxysilane.

4. The medical ether-proof surgical mask according to claim 1, characterized in that: The new ether-philic resin material is in the shape of particles.

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