RU148033U1 - PROTECTIVE HALF MASK (RESPIRATOR) FOR USE IN MEDICINE AND INDUSTRY WITH FIXERS OF FORM - Google Patents

Abstract

1. A protective half mask (respirator) for use in medicine and industry with shape clamps made of filter material, containing a device for attaching the half mask to the head, a nasal bead made in the form of an elastic insert sewn into the edge of the specified material, and an elastic insert sewn into half mask material, characterized in that it contains from one to three additional elastic inserts sewn into the half mask material. 2. Protective half mask (respirator) for use in medicine and industry with mold retainers according to claim 1, characterized in that all elastic inserts are arranged in parallel. Protective half mask (respirator) for use in medicine and industry with shape clamps according to claim 2, characterized in that all elastic inserts are located horizontally.

Description

The invention relates to devices designed to protect respiratory organs from various harmful impurities contained in air, such as dust, bacteria, viruses, aerosols, etc. The device is also designed to protect against infections transmitted by airborne droplets, especially in conditions of mass epidemics and can be used in medicine, in industry and in everyday life.

Filtering facial respiratory masks usually fall into one of two categories: folding flat respiratory masks and finished-form respiratory masks. Folding flat face respiratory masks are stored in a flat compact form, and they include seams, folds and / or folds that allow the base to open and take the shape of a bowl when used. Examples of folding flat face respiratory masks are presented in US patent No. 6568392 and 6484722 (Bostock et al) and No. 6394090 (author Chen).

Ready-made respiratory masks, on the contrary, are made with giving them a more or less constant shape corresponding to the shape of the face, and usually they retain this shape during storage and use. Finished face filter respiratory masks typically include a molded support frame, which is commonly referred to as the “forming layer” and is most often made from thermally bonded fibers or openwork plastic mesh. The mold layer is primarily intended to provide support for the filter layer. The forming layer may be located relative to the filter layer on the inside of the mask (next to the face of the user), on the outside of the mask or both on the outside and inside of the mask. Ready-made respiratory masks are more effective and more convenient to use compared to folding ones, but are more cumbersome during transportation and storage and more expensive to manufacture. Examples of designs of such masks are described in US patent materials No. 4536440 (author Berg), No. 4807619 (Dyrud et al.), And No. 4850347 (author Skov).

The closest in the set of essential features to the proposed technical solution, the prototype analogue is a disposable medical mask according to patent RU 110937 (12/10/2011, bull. No. 34). The essence of the prototype analogue provides for the presence of a filter element made of a woven or non-woven cloth filter material and two flexible inserts built into the filter element of the mask: the upper insert, the spacer, serves to better fit the mask to the face, taking into account the individual characteristics of the nose, the lower insert, in turn, it serves to fix the shape of the mask itself, it is located in the middle of the mask horizontally. The prototype design partially combines the beneficial qualities of the above two categories of respiratory masks. On the one hand, the device is compact when transporting and storing it, like a folding flat respiratory mask and, on the other hand, the filter element does not adhere to the mouth area, which reduces the pneumatic resistance of the mask when inhaling, and also reduces the risk of moisturizing the mask and transmission of infection airborne droplets. Despite all the advantages of the prototype, one bottom insert is still not enough to give the functional (filtering) area of the mask a completely stable shape, therefore, the contact of the filtering element with the face is not excluded, in which it may get wet with a loss of filtering properties and reduce the protective properties of the mask.

The purpose of the utility model is to increase the ergonomics of the half mask and its protective properties. When using the utility model, a technical result is achieved, which consists in increasing the stability of the shape of the filtering region and providing a related reduction in its pneumatic resistance when inhaling, as well as reducing the risk of moistening the mask and transmitting the infection by airborne droplets.

The essence of the utility model, ensuring the achievement of the specified technical result, lies in the fact that in the prior art half mask made of filter material containing a device for attaching the half mask to the head, the nasal bead is made in the form of an elastic insert sewn into the edge of the specified material and elastic the insert sewn into the half mask material has been structurally modified, namely: the half mask contains from one to three additional elastic inserts sewn into the half mask material. The essence of the utility model is related to the claimed technical results as follows: shape-forming elastic inserts that are shape retainers (all inserts except for the sprinkler) allow you to give and maintain the correct shape of the air pocket, which when opened takes the form of a "cup" for any face shape, which prevents the half mask from touching with the mouth during inspiration, which significantly reduces the pneumatic resistance of the mask, as well as the risk of moistening the filter material and transmission of infection.

Figure 1 - shows a particular embodiment of the patented protective half mask (respirator) for use in medicine and industry with form clamps. The half mask in this embodiment is made in the most common rectangular shape.

Protective half mask (respirator) for use in medicine and industry with mold fixers (Fig. 1) (1) is made of filter material, contains a nasal carrier (2) in the form of a flexible insert and mold fixers - forming flexible inserts (3), (4) , (5), (6). These inserts may be present in the design in various quantities from one (as in the prototype) to four (maximum number) and in various combinations at the place of their relative position. The different number and relative location of the flexible inserts allows you to provide the best effect of applying the mask for different sizes and types of human faces (male, female, children's, different nose shapes, facial angle, etc.). To better fit the face, the half mask material can be pleated, i.e. may have a surface in the form of folds (7). For attachment to the head, in particular, earloops (8) can be used as shown in FIG. In other embodiments, it is also possible to use ties to attach to the head with the formation of a node on the occipital region. The shape of the half mask can also be not only rectangular, but also different, for example - oval, which is not important. As the material of the half mask can be used any kind of existing filter materials. For example, such as Spanbond, SpanBel, SMS, gauze, etc. The earloops (8) are rubber threads with a textile coating (polyester + spandex), which are easily ultrasonically welded to the half-mask blank (1) or can be attached in another possible way. Flexible inserts can be made of plastic (PP tape) or twist tape (plastic with a metal core inside) or other suitable materials. Special equipment and technologies for mass production of a utility model are not required.

Claims (3)

1. Protective half mask (respirator) for use in medicine and industry with shape clamps made of filter material, containing a device for attaching the half mask to the head, a nasal bead made in the form of an elastic insert sewn into the edge of the specified material, and an elastic insert sewn into half mask material, characterized in that it contains from one to three additional elastic inserts sewn into the half mask material. 2. The protective half mask (respirator) for use in medicine and industry with shape clamps according to claim 1, characterized in that all the elastic inserts are parallel. 3. The protective half mask (respirator) for use in medicine and industry with form clamps according to claim 2, characterized in that all the elastic inserts are located horizontally.

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