Anti-fogging medical protective glasses

Abstract

The present invention discloses a kind of anti-fogging medical protective glasses, which comprises: a goggles body, and a nose pad connected to the goggles; the goggles body comprises: a lens, a frame, and a baffle is arranged at the lower edge of the frame; the nose pad comprises: a first part, a second part, and a third part, wherein the first part and the second part form a first bending part opening upward, and the second part and the third part form a second bending part opening downward; wherein the outer wall of the first part is fixed to the inner wall of the lower end of the frame, and the second bending part is used to clamp the upper edge of the mask, and is fixed by the second part and the third part. The present invention increases the air tightness through the special nose pad structure design and the baffle is designed at the lower edge of the frame, prevents the gas exhaled from the mask from escaping upward and contacting the goggles to form fog, and integrates the nose pad with the goggles to simplify the wearing steps, and is particularly suitable for medical staff who prevent and treat infectious diseases whose transmission pathways are aerosols or droplets.

Description

Technical Field

[0001] The invention belongs to the field of medical devices and relates to medical protective equipment, in particular to anti-fogging medical protective glasses. Background Art

[0002] Medical staff are at high risk of occupational exposure and need to wear goggles and masks at the same time to prevent the virus from invading the human body through the conjunctiva and respiratory tract. In addition, in the fields of healthcare, biopharmaceuticals, etc., wearing goggles and masks is a routine protective measure.

[0003] However, the gas exhaled when wearing a mask escapes upwards because the mask and the nose and face cannot form a good airtightness. When it encounters the goggles with lower temperature, fog will be generated, affecting the vision and causing many inconveniences to life and work.

[0004] From the existing solutions, on the one hand, the design of anti-fog lenses is started, such as improving the lens molding process or attaching an anti-fog film to solve the problem of lens fogging. For example, CN201920547685.X achieves an anti-fog effect by building a stable electric heating power supply into the lens and attaching a zirconium oxide-sodium fluoride anti-fog film on the lens surface. However, the invention is technically cumbersome and costly.

[0005] On the other hand, starting from the accessories of goggles, for example, CN201320539726.3 discloses anti-fogging goggles for biological products, which solve the problem of goggles fogging by providing a row of air holes and an openable and closable hole cover on the cover body connected to the goggles frame. However, this solution requires opening the hole cover when in use, so that the cavity formed by the goggles and the face is connected to the external environment through the air holes, in order to eliminate the fog, which will increase the occupational exposure of medical personnel and increase the risk of infection, and it is impossible to achieve the simultaneous defogging and rescue and treatment work.

[0006] At present, the problem of goggles fogging up during operation by medical staff has not been effectively solved while ensuring the protective effect of goggles. There is still a need to design safe protective goggles suitable for the prevention and treatment of highly contagious diseases transmitted through droplets or aerosols. Summary of the invention

[0007] The purpose of the present invention is to solve the fogging problem of medical protective glasses, and to prevent the exhaled gas from entering or contacting the goggles, so as to achieve the purpose of avoiding fogging.

[0008] In order to achieve the above-mentioned object, the present invention provides an anti-fogging medical protective glasses, comprising: a goggles body, and a nose pad connected to the goggles;

[0009] The goggles body comprises: a lens, a frame, and a baffle is provided at the lower edge of the frame;

[0010] The nose pad comprises: a first part, a second part, and a third part, wherein the first part and the second part form a first bending part opening upward, and the second part and the third part form a second bending part opening downward;

[0011] Among them, the outer wall of the first part is fixed to the inner wall of the lower end of the frame, and the second bent portion is used to clamp the upper edge of the mask and is fixed to the third part through the second part.

[0012] Preferably, the baffle and the lens form an angle of 45-90°.

[0013] Preferably, the cross-section of the nose pad is Z-shaped or S-shaped.

[0014] Preferably, the first part and the frame are bonded, integrally formed or welded.

[0015] Preferably, a shaping piece is provided at the end edge of the third portion.

[0016] Preferably, the shaping member is an elastic metal wire or a plastic strip.

[0017] Preferably, the distance between the highest point of the second bending portion and the shaping piece is 0.5 mm.

[0018] Preferably, the lens and the frame form a semi-enclosed structure, and when the goggles are worn, the goggles body and the wearer's face form a closed space.

[0019] Preferably, the third portion is longer than the second portion.

[0020] Preferably, the third portion includes a nose side and a mask side, and a cross-section of the mask side is an outwardly convex arc or streamlined shape.

[0021] Beneficial effects of the present invention:

[0022] (1) The present invention realizes the integration of nose pad and goggles. Compared with separate goggles and nose pads, it simplifies the wearing steps, increases the air tightness, and prevents the gas exhaled from the mask from escaping upward and contacting the goggles.

[0023] (2) The baffle design of the present invention can prevent the water mist on the goggles from flowing down to the nose pad and the mask, and can block the upward airflow.

[0024] (3) While the present invention fixes the nose pad to the goggles, the plastic material such as metal wire / strips arranged at the nose pad 0.5 cm from the upper edge can actively match the shape of the nose and face to improve the fit and air tightness. The nose pad is designed in a "Z" shape to buffer the pressure of the goggles and clamp the upper edge of the mask.

[0025] (4) The present invention has a special design for the nose pad structure: the first bent portion opening upward is designed to relieve the pressure on the goggles body, and the second bent portion opening downward is designed to tightly clamp the upper edge of the mask. The squeezing force formed by the hot air flow exhaled by the wearer is cleverly utilized to increase the fit between the nose pad and the nose and face, providing effective airtight protection for the wearer and preventing the wearer's exhaled gas from escaping to the lens to form water mist.

[0026] (5) Compared with other anti-fog goggles designs, the defog method of the present invention is simple, convenient, low-cost and does not sacrifice the airtight protection effect of the goggles. It is particularly suitable for medical staff who are preventing and controlling infectious diseases that are transmitted through aerosols or droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a schematic structural diagram of an anti-fogging medical protective eyewear of the present invention.

[0028] Figure 2 The present invention is a schematic cross-sectional view of the anti-fogging medical protective glasses in use.

[0029] Description of reference numerals:

[0030] Goggles body 10

[0031] Lens 11

[0032] Frame 12

[0033] Baffle 13

[0034] Nose pad 20

[0035] Part 21

[0036] Part 22

[0037] Part 323

[0038] Nose side 231

[0039] Mask side 232

[0040] The first bent portion 24

[0041] Second bending portion 25

[0042] Plastic parts 26

[0043] Mask 30. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, terms related to orientation, such as upper part, lower part, bottom, upper edge, upper end, lower end, height, etc., describe the orientation in the use state and are not used to limit the structure.

[0048] The "nasofacial area" described herein refers to the nose and / or the face adjacent to the nose.

[0049] like Figure 1 , Figure 2 As shown, an anti-fogging medical protective eyewear comprises: a goggles body 10, and a nose pad 20 connected to the goggles.

[0050] The goggles body 10 comprises: a lens 11 and a frame 12. In order to effectively protect the eyes, the lens 11 and the frame 12 form a semi-enclosed structure. When worn, the goggles body 10 and the wearer's face form a closed space. In order to prevent the mist on the goggles from flowing down into the nose pad 20 and the mask 30, a baffle 13 is also provided at the lower edge of the frame 12, which forms an angle of 45-90° with the lens 11. In order not to affect the field of vision, the width of the baffle 13 can be set to 0.5cm-1.0cm, and the thickness is about 1mm-3mm. The material of the baffle can be selected from a plastic sheet, which can be integrally formed with the frame or fixed by bonding.

[0051] The nose pad 20 can be made of elastic skin-friendly materials such as silicone, and includes: a first part 21, a second part 22, and a third part 23. Figure 2 shown.

[0052] The first part 21 and the second part 22 form a first bent portion 24 opening upward, and the shape of the opening can be U-shaped or V-shaped, which can buffer the downward pressure of the goggles body due to gravity. The principle is similar to energy absorption, that is, elastic deformation absorbs impact energy.

[0053] The second part 22 and the third part 23 form a second bending portion 25 with an opening downward, and the shape of the opening can be an inverted U-shape or an inverted V-shape. The height of the opening (i.e., the length of the second part 22) can be 1.0-3.0 cm, and the width can be 0.5-3 mm. The outer wall of the first part 21 and the inner wall of the lower end of the frame 12 can be fixed by bonding or integral molding or welding. The second bending portion 25 is used to clamp the upper edge of the mask in the use state, and is fixed by the second part 22 and the third part 23.

[0054] The cross section of the nose pad 20 is a standard or non-standard Z-shape or S-shape. The nose pad 20 is unfolded to be in a sheet shape.

[0055] In order to make the nose pad 20 fit tightly against the user's face to form a seal, a shaping piece 26 is provided on the third portion 23 at a distance of about 0.5 cm from the highest point of the second bend. The shaping piece 26 can be made of elastic metal wire or plastic strip to adjust the nose pad to the nose and face curve and increase air tightness. The shaping piece 26 is in the shape of a strip or a wire, and is arranged to be wrapped inside the nose pad 20 and parallel to the upper edge of the nose pad 20 in the unfolded state.

[0056] The third portion 23 includes a nose face side 231 and a mask side 232 . The nose face side 231 is located on the inner side and is used to be attached to the nose and face of the wearer. The mask side 232 is located on the outer side and is tightly attached to the mask when in use.

[0057] The nose face side 231 preferably has the function of adsorbing the skin. It does not need to be completely in contact with the nose face, and a small gap is allowed to exist. The mist in the initial stage of wearing quickly condenses into water in the gap and is retained to achieve good adsorption and stabilization effects.

[0058] When in use, the upper edge of the mask is clamped in the opening of the second bent portion 25 and is clamped and fixed by the second part 22 and the third part 23. The principle is that the hot air flow escaping from the mask passes through the gap between the third part 23 and the mask, forming pressures toward the inside and outside respectively. The pressure toward the inside makes the nose face side 231 fit tightly against the nose face, and the pressure toward the outside makes the mask and the mask side 232 fit tightly against the mask.

[0059] In order to guide the hot air flow diffused from the mask, the cross-section of the mask side 232 is in an outwardly convex arc or streamlined shape, so that the hot air flow can turn upward along the second bending portion 25 from the gap between the third part 23 of the nose pad and the mask, and escape downward from the gap between the second part 22 and the mask, thereby avoiding the problem that the hot air flow encounters the glasses with relatively low temperature after escaping upward, forming mist on the lenses of the glasses, i.e., fogging, and affecting the wearer's vision.

[0060] In order to guide the airflow more effectively, the third portion 23 is longer than the second portion 22 .

[0061] The material of the nose pad should be non-toxic, safe, comfortable, soft and elastic. It is best to choose a low-density elastic skin-friendly material with good thermal conductivity, which can be shaped at will with the metal wire / strip and other structures on the upper end of the mask. It will be better if it has adsorption or adhesion with human tissue. Low-density materials can reduce weight, and materials with good thermal conductivity are conducive to heat dissipation, both of which can achieve better results. There are no specific requirements for the shape and size of the nose pad. It can be made into a flat plate, a groove shape that adapts to the contour of the nose, or a personalized shape prepared by molding or printing. The size should at least cover the width of the nasal dorsum.

[0062] The method of using the protective glasses of the present invention is as follows: put on the protective glasses, press the shaping piece 26 so that the nose face side 231 is in close contact with the nose face, then put on the mask, clamp the upper edge of the mask in the second bending portion 25, press the shaping strip on the upper edge of the mask so that it is in close contact with the wearer's face, and then press the second portion 22 to fix the upper edge of the mask. Then, slightly adjust the protective glasses and the mask to achieve a closed and comfortable state.

[0063] In summary, the protective glasses provided by the present invention are fixedly connected with a nose pad, which simplifies the wearing steps and increases the air tightness; through the special design of the nose pad structure, the pressure of the goggles body is relieved through the first bent portion opening upward, and the upper edge of the mask is tightly clamped through the second bent portion opening downward, and the squeezing force formed by the hot air flow exhaled by the wearer is cleverly utilized to increase the fit effect of the nose pad and the nose and face area, providing effective airtight protection for the wearer and preventing the wearer's exhaled gas from escaping to the lens to form water mist; moreover, the present invention also arranges a baffle at the lower edge of the frame to prevent water vapor on the lens from flowing into the mask or the nose pad and to block the air flow from escaping upward.

[0064] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. Anti-fogging medical protective glasses, characterized in that: It includes: a goggles body, and a nose pad connected to the goggles body; The goggles body comprises: a lens, a frame, and a baffle is provided at the lower edge of the frame; The nose pad comprises: a first part, a second part, and a third part, wherein the first part and the second part form a first bending part opening upward, and the second part and the third part form a second bending part opening downward; The outer wall of the first part is fixed to the inner wall of the lower end of the frame, the second bending part is used to clamp the upper edge of the mask, and the mask is fixed to the third part through the second part; The lens and the frame form a semi-enclosed structure. When the goggles are worn, the goggles body and the wearer's face form a closed space. The cross section of the nose pad is Z-shaped or S-shaped, and the nose pad is unfolded to be in the shape of a sheet; The first part is bonded or integrally formed or welded to the frame; The third portion is longer than the second portion.

2. The anti-fogging medical protective glasses according to claim 1, characterized in that: The baffle and the lens form an angle of 45°-90°.

3. The anti-fogging medical protective glasses according to claim 1, characterized in that: The end edge of the third part is provided with a shaping piece.

4. The anti-fogging medical protective glasses according to claim 3, characterized in that: The shaping piece is an elastic metal wire or a plastic strip.

5. The anti-fogging medical protective glasses according to claim 3, characterized in that: The distance between the highest point of the second bending portion and the shaping piece is 0.5 cm.

6. The anti-fogging medical protective glasses according to claim 1, characterized in that: The third part includes a nose face side and a mask side, and the cross section of the mask side is an arc or streamline shape convex outward.

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