CN212165001U - Protective mask - Google Patents
Protective mask Download PDFInfo
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- CN212165001U CN212165001U CN202020440941.8U CN202020440941U CN212165001U CN 212165001 U CN212165001 U CN 212165001U CN 202020440941 U CN202020440941 U CN 202020440941U CN 212165001 U CN212165001 U CN 212165001U
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- 230000001681 protective effect Effects 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000001815 facial effect Effects 0.000 claims 5
- 239000011521 glass Substances 0.000 abstract description 24
- 239000005336 safety glass Substances 0.000 abstract description 12
- 230000035515 penetration Effects 0.000 abstract description 10
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 10
- 239000000443 aerosol Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 241000700605 Viruses Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010035664 Pneumonia Diseases 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002695 general anesthesia Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
本实用新型公开了一种防护面罩,其包括面罩、上固定件、下固定组件和透明的眼部遮盖件,所述面罩包括面部遮盖部和颈部遮盖部,所述颈部遮盖部由所述面部遮盖部的一侧向外张开而成,所述面部遮盖部上开设有可用于与防护眼镜配合的穿置孔,所述穿置孔处设有密封边缘,所述眼部遮盖件可拆卸地盖于所述穿置孔,所述上固定件设于所述面部遮盖部,借由所述上固定件将所述面部遮盖部固定于面部,所述下固定组件设于所述颈部遮盖部,借由所述下固定组件将所述颈部遮盖部固定于颈部。本实用新型的防护面罩能够选择性地配合医护眼镜使用或不配合医护眼镜使用,并避免面部和颈部暴露而降低感染的风险,还具有结构简单和使用方便等优点。
The utility model discloses a protective mask, which comprises a mask, an upper fixing part, a lower fixing component and a transparent eye covering part, the mask comprises a face covering part and a neck covering part, the neck covering part is covered by the One side of the face covering part is opened outward, the face covering part is provided with a penetration hole that can be used for matching with the safety glasses, the penetration hole is provided with a sealing edge, and the eye covering part is provided with a sealing edge. Removably cover the through hole, the upper fixing member is arranged on the face covering portion, the face covering portion is fixed on the face by the upper fixing member, and the lower fixing component is arranged on the face The neck covering part is fixed to the neck by the lower fixing component. The protective mask of the utility model can be used selectively with or without medical glasses, avoids exposure of the face and neck to reduce the risk of infection, and has the advantages of simple structure and convenient use.
Description
技术领域technical field
本实用新型涉及医疗防护护具领域,尤其涉及一种防护面罩。The utility model relates to the field of medical protective gear, in particular to a protective mask.
背景技术Background technique
NCP的主要传播途径是经呼吸道飞沫和密切接触传播,在相对封闭的环境中长时间暴露于高浓度气溶胶情况下存在经气溶胶传播的可能。“专家共识”特别强调了前一段时间被忽视的气溶胶的重要性,认同携带病毒的气溶胶与病毒的传播风险增加有关。严重创伤紧急手术多数需要采用全身麻醉,在气管插管、无创通气、吸痰、拔管,以及使用电刀、吸引器等操作过程中,均不可避免产生大量气溶胶。肺炎患者呼吸机使用感控管理专家共识中提出,呼吸机及其相关配件在使用的过程中易出现携带病原体的飞沫或气溶胶扩散,是一种高风险的传播途径。所以建议一线医务人员均应采取三级防护,即需要同时对医务人员的面部和颈部进行遮盖,从而达到防护的效果。然而,目前市场上暂时没有出现能够同时对医务人员的面部和颈部进行遮盖的防护装置,从而无法对固液体与微生物的阻隔功能,进而使一线医务人员面部和颈部暴露以致使感染风险很高,与此同时,有些医务人员需要配合防护眼镜使用,有些医务人员则不需要配合防护眼镜使用,现有的面罩一般只针对一种情况进行使用,使用不便。The main transmission route of NCP is through respiratory droplets and close contact, and there is a possibility of transmission through aerosols when exposed to high concentrations of aerosols for a long time in a relatively closed environment. The "Expert Consensus" specifically emphasized the importance of aerosols, which had been neglected for some time, and agreed that aerosols carrying viruses were associated with an increased risk of virus transmission. General anesthesia is required for most severe trauma emergency operations, and a large amount of aerosol is inevitably generated during tracheal intubation, non-invasive ventilation, sputum suction, extubation, as well as the use of electrosurgery and suction. The expert consensus on the management of the use of ventilators for patients with pneumonia suggests that the use of ventilators and their related accessories is prone to the spread of droplets or aerosols carrying pathogens, which is a high-risk route of transmission. Therefore, it is recommended that front-line medical staff should adopt three-level protection, that is, they need to cover the face and neck of medical staff at the same time, so as to achieve the effect of protection. However, there is currently no protective device on the market that can cover the face and neck of medical staff at the same time, so it cannot block the solid liquid and microorganisms, thereby exposing the face and neck of front-line medical staff, resulting in a high risk of infection. At the same time, some medical staff need to use protective glasses, and some medical staff do not need to use protective glasses. The existing masks are generally only used for one situation, which is inconvenient to use.
因此,亟需要一种防护面罩来克服上述的缺陷。Therefore, there is an urgent need for a protective face shield to overcome the above-mentioned drawbacks.
实用新型内容Utility model content
本实用新型的目的在于提供一种防护面罩,其能够选择性地配合医护眼镜使用或不配合医护眼镜使用,并避免面部和颈部暴露而降低感染的风险,还具有结构简单和使用方便等优点。The purpose of the utility model is to provide a protective mask, which can be used selectively with or without medical glasses, avoids exposure of the face and neck to reduce the risk of infection, and has the advantages of simple structure and convenient use. .
为了实现上述目的,本实用新型公开了一种防护面罩,其包括面罩、上固定件、下固定组件和透明的眼部遮盖件,所述面罩包括面部遮盖部和颈部遮盖部,所述颈部遮盖部由所述面部遮盖部的一侧向外张开而成,所述面部遮盖部上开设有可用于与防护眼镜配合的穿置孔,所述穿置孔处设有密封边缘,所述眼部遮盖件可拆卸地盖于所述穿置孔,所述上固定件设于所述面部遮盖部,借由所述上固定件将所述面部遮盖部固定于面部,所述下固定组件设于所述颈部遮盖部,借由所述下固定组件将所述颈部遮盖部固定于颈部。In order to achieve the above purpose, the utility model discloses a protective mask, which comprises a mask, an upper fixing part, a lower fixing component and a transparent eye covering part, the mask comprises a face covering part and a neck covering part, the neck covering part The face covering part is formed by opening one side of the face covering part outwards, the face covering part is provided with a penetration hole which can be used for matching with the safety glasses, and the penetration hole is provided with a sealing edge, so The eye covering part is detachably covered on the through hole, the upper fixing part is arranged on the face covering part, the face covering part is fixed on the face by the upper fixing part, and the lower fixing part is The assembly is arranged on the neck covering part, and the neck covering part is fixed on the neck by the lower fixing assembly.
较佳地,所述面部遮盖部上设有粘贴件,所述眼部遮盖件上设有与所述粘贴件配合的配粘件,借由所述粘贴件与所述配粘件的配合使得所述眼部遮盖件可拆卸地盖于所述穿置孔。Preferably, an adhesive member is provided on the face covering portion, and an adhesive member matched with the adhesive member is provided on the eye covering member. The eye cover is detachably covered on the through hole.
较佳地,所述密封边缘为位于所述穿置孔处且具有弹性的松紧带。Preferably, the sealing edge is an elastic band located at the penetration hole and having elasticity.
较佳地,所述上固定件为松紧带。Preferably, the upper fixing member is an elastic band.
较佳地,所述下固定组件包括相互配合锁紧的第一调节结构和第二调节结构,所述第一调节结构和第二调节结构中的一者设于所述颈部遮盖部的左侧,所述第一调节结构和第二调节结构中的另一者设于所述颈部遮盖部的右侧。Preferably, the lower fixing assembly includes a first adjustment structure and a second adjustment structure that are locked in cooperation with each other, and one of the first adjustment structure and the second adjustment structure is provided on the left side of the neck covering part. On the side, the other one of the first adjustment structure and the second adjustment structure is provided on the right side of the neck covering part.
具体地,所述第一调节结构和第二调节结构中的一者呈间隔的设于所述颈部遮盖部,所述第一调节结构和第二调节结构中的另一者呈间隔的设于所述颈部遮盖部。Specifically, one of the first adjustment structure and the second adjustment structure is disposed on the neck covering part at intervals, and the other of the first adjustment structure and the second adjustment structure is disposed at an interval on the neck covering part.
具体地,所述下固定组件可调节所述颈部遮盖部的左侧与所述颈部遮盖部的右侧之间的松紧程度,借由所述第一调节结构和第二调节结构之间连接位置的调节,所述颈部遮盖部的左侧与所述颈部遮盖部的右侧选择性的靠近或远离以调节捆绑空间的大小。Specifically, the lower fixing assembly can adjust the degree of tightness between the left side of the neck covering part and the right side of the neck covering part, through the adjustment between the first adjustment structure and the second adjustment structure For the adjustment of the connection position, the left side of the neck covering part and the right side of the neck covering part are selectively approached or separated to adjust the size of the binding space.
具体地,所述第一调节结构为公粘扣带,所述第二调节结构为母粘扣带。Specifically, the first adjustment structure is a male hook and loop fastener, and the second adjustment structure is a female hook and loop fastener.
具体地,所述第一调节结构为第一扣合带,所述第二调节结构为第二扣合带,所述第一扣合带上具有公扣,所述第二扣合带具有多个沿所述第二扣合带长度方向呈间隔布置的母扣,所述公扣选择性的与其中一所述母扣扣合。Specifically, the first adjustment structure is a first buckle belt, the second adjustment structure is a second buckle belt, the first buckle belt is provided with a male buckle, and the second buckle belt has multiple There are female buckles arranged at intervals along the length direction of the second fastening strip, and the male buckles are selectively fastened with one of the female buckles.
较佳地,所述面罩具有柔性。Preferably, the mask is flexible.
与现有技术相比,本实用新型的防护面罩由于将面罩、上固定件、下固定组件和透明的眼部遮盖件等结合在一起,面罩包括面部遮盖部和颈部遮盖部,颈部遮盖部由面部遮盖部的一侧向外张开而成,故颈部遮盖部可以从前部和左右两侧紧密地对颈部进行包覆,从而更好的对颈部进行遮盖以达到防护的效果,与此同时,面部遮盖部与面部防护对应,颈部遮盖部与颈部对应,从而起到针对性的防护作用;面部遮盖部上开设有可用于与防护眼镜配合的穿置孔,故能够便于配合医护眼镜使用,提高使用的便利性和佩戴的舒适度,而且,由于穿置孔处设有密封边缘,借由密封边缘勒紧防护眼镜的外壁,不仅能够辅助防护眼镜的固定,而且能够使得防护眼镜与面罩之间更好地实现贴合,当防护面罩不再配合防护眼镜使用时,可以将眼部遮盖件安装于穿置孔,从而对眼部进行保护,若需要配合防护眼镜使用时,可以将眼部遮盖件从穿置孔处拆卸下来,从而达到选择性地配合医护眼镜使用或不配合医护眼镜使用,提高使用的便利性;上固定件设于面部遮盖部,借由上固定件将面部遮盖部固定于面部,下固定组件设于颈部遮盖部,借由下固定组件将颈部遮盖部固定于颈部,上固定件和下固定组件的设置能够从面部和颈部两个位置进行固定,从而有效避免防护面罩的脱落以起到稳定的固定作用。本实用新型的防护面罩还具有结构简单和制作成本少等优点。Compared with the prior art, the protective mask of the present invention combines the mask, the upper fixing part, the lower fixing component and the transparent eye covering part, etc., the mask comprises a face covering part and a neck covering part, and the neck covering The neck cover is formed by the opening of one side of the face covering part, so the neck covering part can tightly cover the neck from the front and left and right sides, so as to better cover the neck to achieve the effect of protection , At the same time, the face covering part corresponds to the face protection, and the neck covering part corresponds to the neck, so as to play a targeted protective role; It is convenient to use with medical glasses, which improves the convenience of use and wearing comfort. Moreover, since the insertion hole is provided with a sealing edge, the outer wall of the protective glasses is tightened by the sealing edge, which can not only assist the fixing of the protective glasses, but also can Make the safety glasses and the face shield better fit. When the protective face shield is no longer used with the safety glasses, the eye cover can be installed in the through hole to protect the eyes. If it needs to be used with the safety glasses When the eye cover is removed from the insertion hole, the eye cover can be selectively used with or without medical glasses, and the convenience of use is improved; the upper fixing piece is arranged on the face cover, The fixing piece fixes the face covering part on the face, the lower fixing component is arranged on the neck covering part, and the neck covering part is fixed on the neck by the lower fixing component, the upper fixing piece and the lower fixing component can be arranged from the face and the neck. The two positions are fixed, so as to effectively avoid the falling off of the protective mask and play a stable fixing role. The protective mask of the utility model also has the advantages of simple structure and low manufacturing cost.
附图说明Description of drawings
图1为本实用新型的防护面罩且第一调节结构为第一扣合带,第二调节结构为第二扣合带时在正视方向上的平面结构示意图。FIG. 1 is a schematic plan view of the protective face shield of the present invention, when the first adjustment structure is a first buckling belt, and the second adjustment structure is a second buckling belt in the front view direction.
图2为本实用新型的防护面罩且第一调节结构为第一扣合带,第二调节结构为第二扣合带时在后视方向上的平面结构示意图。2 is a schematic plan view of the protective face shield of the present invention, when the first adjustment structure is a first buckling belt, and the second adjustment structure is a second buckling belt in the rear view direction.
图3为本实用新型的防护面罩且第一调节结构可为公粘扣带,第二调节结构为母粘扣带时在正视方向上的平面结构示意图。FIG. 3 is a schematic plan view of the protective face shield of the present invention and the first adjustment structure can be a male hook and loop fastener, and the second adjustment structure is a female hook and loop fastener in the front view direction.
图4为本实用新型的防护面罩且第一调节结构可为公粘扣带,第二调节结构为母粘扣带时在后视方向上的平面结构示意图。4 is a schematic diagram of the plane structure in the rear view direction when the protective face shield of the present invention is provided with the first adjustment structure being a male hook and loop fastener and the second adjustment structure being a female hook and loop fastener.
具体实施方式Detailed ways
为详细说明本实用新型的技术内容、构造特征、所实现目的及效果,以下结合实施方式并配合附图详予说明。In order to describe in detail the technical content, structural features, achieved objects and effects of the present invention, the following detailed description is given in conjunction with the embodiments and the accompanying drawings.
请参阅图1至图4,本实用新型提供一种防护面罩100,其包括面罩1、上固定件2、下固定组件3和透明的眼部遮盖件5,面罩1包括面部遮盖部11和颈部遮盖部12,颈部遮盖部12由面部遮盖部11的一侧向外张开而成,故颈部遮盖部12可以从颈部的前部和左右两侧紧密地对颈部进行包覆,从而更好的对颈部进行遮盖以达到防护的效果,与此同时,面部遮盖部11与面部防护对应,颈部遮盖部12与颈部对应,从而起到针对性的防护作用;面部遮盖部11上开设有可用于与防护眼镜配合的穿置孔111,故能够便于配合医护眼镜使用,使用时,医务人员先戴医护眼镜,然后再戴防护面罩100,医护眼镜通过穿置孔111 裸露在外,防护面罩100则可对医护眼镜外的皮肤进行遮盖,不仅安全性高,而且提高佩戴的舒适度和使用的便利性,为了更好的实现穿置孔111与防护眼镜之间的密封性,穿置孔111处设有密封边缘4,借由密封边缘4勒紧防护眼镜的外壁,不仅能够辅助防护眼镜的固定,而且能够使得防护眼镜与面罩1之间更好地实现贴合,较优的是,密封边缘4为位于穿置孔111处且具有弹性的松紧带,为了美观,松紧带可以内置于面部遮盖部11,但不限于此;眼部遮盖件 5可拆卸地盖于穿置孔111,当防护面罩100不再配合防护眼镜使用时,可以将眼部遮盖件5安装于穿置孔111,从而对眼部进行保护,若需要配合防护眼镜使用时,可以将眼部遮盖件5从穿置孔111处拆卸下来,从而达到选择性地配合医护眼镜使用或不配合医护眼镜使用,提高使用的便利性;上固定件2设于面部遮盖部11,借由上固定件2将面部遮盖部11固定于面部,较优的是,上固定件2为松紧带,当上固定件2为松紧带时,松紧带的一端与面部遮盖部11的左侧连接,松紧带的另一端与面部遮盖部11的的右侧连接,下固定组件3设于颈部遮盖部12,借由下固定组件3将颈部遮盖部12固定于颈部,上固定件2和下固定组件3的设置能够从面部和颈部两个位置进行固定,从而有效避免防护面罩100的脱落以起到稳定的固定作用。较优的是,面罩1具有柔性,面罩1由具有柔性的防护材料制成,但不限于此。可以理解的是,由于面罩1采用防护材料制成,这样就即使不佩戴外层的口罩也同样对起到起到防护的作用,从而达到减少佩戴外层口罩的目的以提高舒适度。更为具体地,如下:Please refer to FIGS. 1 to 4 , the present invention provides a
请参阅图1至图4,面部遮盖部11上设有粘贴件(图未示),眼部遮盖件 5上设有与粘贴件配合的配粘件(图未示),借由粘贴件与配粘件的配合使得眼部遮盖件5可拆卸地盖于穿置孔111从而实现眼部遮盖件5可拆卸地安装于穿置孔111,较优的是,粘贴件位于面部遮盖部11的边缘处,配粘件位于眼部遮盖件5的边缘处,但不限于此,可以理解的是,粘贴件和配粘件可以为魔术贴等粘附物,但不限于此。Please refer to FIG. 1 to FIG. 4 , the
请参阅图1至图4,穿置孔111的外轮廓与防护眼镜的外轮廓相对应,从而使得穿置孔111与防护眼镜更好地配合,较优的是,穿置孔111为长形孔,但不限于此。Please refer to FIGS. 1 to 4 , the outer contour of the through
请参阅图1至图4,下固定组件3包括相互配合锁紧的第一调节结构31和第二调节结构32,第一调节结构31和第二调节结构32中的一者设于颈部遮盖部12的左侧,第一调节结构31和第二调节结构32中的另一者设于颈部遮盖部 12的右侧,从而使得第一调节结构31、第二调节结构32和颈部遮盖部12共同围成捆绑空间。较优的是,第一调节结构31和第二调节结构32均设置为至少两个,第一调节结构31和第二调节结构32中的一者呈间隔的设于颈部遮盖部 12,第一调节结构31和第二调节结构32中的另一者呈间隔的设于颈部遮盖部12,从而共同形成稳定的固定,于本实施例中,第一调节结构31设于颈部遮盖部12的左侧,第二调节结构32设于颈部遮盖部12的右侧,第一调节结构31 和第二调节结构32均设置为两个。Please refer to FIG. 1 to FIG. 4 , the
请参阅图1至图4,下固定组件3可调节颈部遮盖部12的左侧与颈部遮盖部12的右侧之间的松紧程度,借由第一调节结构31和第二调节结构32之间连接位置的调节,颈部遮盖部12的左侧与颈部遮盖部12的右侧选择性的靠近或远离以调节捆绑空间的大小,故可通过调节捆绑空间的大小来适配不同身形的医务人员,调节灵活。举例而言,如图1至图2所示,第一调节结构31为第一扣合带,第二调节结构32为第二扣合带,第一扣合带上具有公扣,第二扣合带具有多个沿第二扣合带长度方向呈间隔布置的母扣,公扣选择性的与其中一母扣扣合,从而实现捆绑空间之大小的调节;可以理解的是,如图3至图4所示,第一调节结构31也可为公粘扣带,对应地,第二调节结构32为母粘扣带,利用公粘扣带与母粘扣带之间的黏接位置调节实现捆绑空间之大小的调节,第一调节结构31可以为捆绑带,对应地,第二调节结构32也可为捆绑带。Please refer to FIGS. 1 to 4 , the
结合图1至图4,对本实用新型的防护面罩100的使用过程进行详细描述,如下:1 to 4, the use process of the
若医务人员需要佩戴防护眼镜,通过粘贴件和配粘件将眼部遮盖件5从穿置孔111上拆卸下来,医务人员先佩戴好防护眼镜,将面部遮盖部11的穿置孔 111对准防护眼镜然后将面罩1的面部遮盖部11盖于面部,颈部遮盖部12盖于颈部并将颈部遮盖部12将颈部的前部和左右两侧包裹好,通过上固定件2将面部遮盖部11固定于面部,利用第一调节结构31与第二调节结构32的锁定将颈部遮盖部12固定于颈部,固定完毕,最后穿上防护服,从而实现医务人员的全身防护。若医务人员不需要佩戴防护眼镜时,则无需将眼部遮盖件5从穿置孔 111上拆卸下来。If the medical staff needs to wear protective glasses, remove the eye cover 5 from the piercing
由于将面罩1、上固定件2、下固定组件3和透明的眼部遮盖件5等结合在一起,面罩1包括面部遮盖部11和颈部遮盖部12,颈部遮盖部12由面部遮盖部11的一侧向外张开而成,故颈部遮盖部12可以从前部和左右两侧紧密地对颈部进行包覆,从而更好的对颈部进行遮盖以达到防护的效果,与此同时,面部遮盖部11与面部防护对应,颈部遮盖部12与颈部对应,从而起到针对性的防护作用;面部遮盖部11上开设有可用于与防护眼镜配合的穿置孔111,故能够便于配合医护眼镜使用,提高使用的便利性和佩戴的舒适度,而且,由于穿置孔111处设有密封边缘4,借由密封边缘4勒紧防护眼镜的外壁,不仅能够辅助防护眼镜的固定,而且能够使得防护眼镜与面罩1之间更好地实现贴合,当防护面罩100不再配合防护眼镜使用时,可以将眼部遮盖件5安装于穿置孔111,从而对眼部进行保护,若需要配合防护眼镜使用时,可以将眼部遮盖件5从穿置孔111处拆卸下来,从而达到选择性地配合医护眼镜使用或不配合医护眼镜使用,提高使用的便利性;上固定件2设于面部遮盖部11,借由上固定件2将面部遮盖部11固定于面部,下固定组件3设于颈部遮盖部12,借由下固定组件 3将颈部遮盖部12固定于颈部,上固定件2和下固定组件3的设置能够从面部和颈部两个位置进行固定,从而有效避免防护面罩100的脱落以起到稳定的固定作用。本实用新型的防护面罩100还具有结构简单和制作成本少等优点。Due to the combination of the
以上所揭露的仅为本实用新型的较佳实例而已,当然不能以此来限定本实用新型之权利范围,因此依本实用新型申请专利范围所作的等同变化,仍属于本实用新型所涵盖的范围。What has been disclosed above is only a preferred example of the present invention, of course, it cannot limit the scope of rights of the present invention. Therefore, the equivalent changes made according to the scope of the patent application of the present invention still belong to the scope covered by the present invention. .
Claims (10)
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| CN202020440941.8U CN212165001U (en) | 2020-03-30 | 2020-03-30 | Protective mask |
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| CN212165001U true CN212165001U (en) | 2020-12-18 |
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