Rat mouth gag for rat experiment

Abstract

The utility model belongs to the field of animal medicine experiment equipment, and relates to a rat mouth gag for rat experiments, which comprises an upper fixing part, a lower fixing part, two opening parts and two side supporting parts, the two ends of the lower fixing part are connected with one ends of the two opening parts respectively, the other ends of the two opening parts are connected with the side supporting parts respectively, and the other ends of the two side supporting parts are connected with the two ends of the upper fixing part respectively. An upper tooth fixing piece is arranged on the upper fixing part, a lower tooth fixing piece is arranged on the lower fixing part, and cheek supporting bows are arranged on the two side supporting parts respectively. When the upper tooth fixing piece of the upper fixing part fixes the anterior teeth of the upper jaw of the rat in a matched mode, the cheek supporting bows on the two side supporting parts are placed between molar teeth and cheek mucous membranes in a matched mode, the side supporting parts support and fix the cheeks on the two sides of the rat, the stability of the rat mouth gag for supporting the oral cavity of the rat is improved, and the rat mouth gag is convenient to use. The situation that in the experiment process, the mouth gag moves due to movement of the head of the rat, and the cheek mucosa of the rat is injured is avoided.

Description

Technical Field

[0001] The utility model relates to the field of animal medical experimental equipment, in particular to a rat mouth opener used for rat experiments. Background Art

[0002] In the study of oral diseases, rats are often needed to establish oral disease models, which requires a good field of vision for oral operations, that is, an oral opener is needed to open the upper and lower jaws of the rat and expose the intraoral structures for subsequent experimental operations.

[0003] The utility model patent with announcement number CN219516683U discloses a rodent oral opener and experimental equipment. Although the opener does not require the assistance of multiple people and can be operated by one person, the opener only has a clamping part for fixing the upper and lower front teeth of the rodent, and does not have a supporting structure for the cheek. During the experiment, the movement of the rodent's head causes the opener to move, which can easily cause damage to the rodent's buccal mucosa and affect the life of the rodent. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model proposes a rat mouth opener for rat experiments.

[0005] The utility model solves the technical problem by adopting the following technical solution: a rat mouth opening device for rat experiments, comprising an upper fixing part, a lower fixing part, two opening parts and two side supporting parts;

[0006] The two ends of the lower fixing part are respectively connected to one end of the two opening parts, the other ends of the two opening parts are respectively connected to a side supporting part, and the other ends of the two side supporting parts are respectively connected to the two ends of the upper fixing part;

[0007] An upper tooth fixing part is provided on the upper fixing part, a lower tooth fixing part is provided on the lower fixing part, and cheek support arches are respectively provided on the two side supporting parts.

[0008] In a preferred embodiment of the present invention, the upper tooth fixing member is a tooth hole.

[0009] In a preferred embodiment of the present invention, the lower tooth fixing piece is a limiting groove.

[0010] In a preferred embodiment of the present invention, the cheek support arch is a side limiting convex strip.

[0011] In a preferred embodiment of the utility model, the upper fixing part, the upper tooth fixing piece, the lower fixing part, the lower tooth fixing piece, the two opening parts and the two side supporting parts are all made of steel wire, and the outer rings of the upper tooth fixing piece and the lower tooth fixing piece are wrapped with a rubber layer.

[0012] In a preferred embodiment of the present utility model, the expansion part is a torsion spring.

[0013] In a preferred embodiment of the present utility model, both the lower tooth fixing member and the buccal support arch are of U-shaped structures.

[0014] In a preferred embodiment of the present utility model, on the upper and lower fixing parts, tongue guides are respectively provided on both sides of the lower tooth fixing member, and the two tongue guides are symmetrically arranged along the lower tooth fixing member.

[0015] In a preferred embodiment of the present utility model, the tongue guide is of a square structure and includes a U-shaped frame and a rubber strip. The two ends of the rubber strip are respectively connected to the two ends of the U-shaped frame, and the rubber strip is arranged lower than the U-shaped frame. The U-shaped frame is made of steel wire, and a rubber layer is provided on the outer circle of the U-shaped frame.

[0016] In a preferred embodiment of the present utility model, a plurality of inclined ridges are provided on the inner walls of both the U-shaped frame and the rubber strip.

[0017] The beneficial effects of the present utility model are as follows: For the rat mouth opener used in rat experiments of the present utility model, when the upper tooth fixing member on the upper fixing part fixedly matches the upper anterior teeth of the rat, the buccal support arches on the two side support parts are placed between the molar teeth and the buccal mucosa in a matching manner. Through the side support parts, the support and fixation of the two sides of the rat's cheeks are effectively realized, which is beneficial to increasing the stability of the rat mouth opener in supporting the rat's oral cavity, effectively avoiding the situation that the mouth opener moves due to the movement of the rat's head during the experiment, resulting in damage to the rat's buccal mucosa, and avoiding affecting the rat's lifespan. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0019] Figure 2 is a schematic structural view of the upper tooth fixing member, the lower tooth fixing member and the U-shaped frame wrapped with a rubber layer of the present utility model;

[0020] Figure 3 is a schematic structural view of the present utility model Figure 2 ;

[0021] Figure 4 is a distribution diagram of the working area of the tongue guide of the present utility model;

[0022] Figure 5 is a schematic structural view of the tongue guide of the present utility model.

[0023] In the figure: upper fixing part 1; upper tooth fixing piece 11; lower fixing part 2; lower tooth fixing piece 21; spreading part 3; side supporting part 4; buccal supporting arch 41; tongue guide 5; U-shaped frame 51; rubber strip 52; convex strip 53; rubber layer 6; left maxillary molar area A, right maxillary molar area B, left mandibular tongue guiding area C, right mandibular tongue guiding area D. Detailed implementation manner

[0024] The following is a detailed description of the implementation manner of the present utility model. Examples of the implementation manner are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The implementation manner described below by referring to the accompanying drawings is exemplary and is only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0026] As Figures 1 to 3 shown, a rat mouth opener for rat experiments includes an upper fixing part 1, a lower fixing part 2, two spreading parts 3 and two side supporting parts 4;

[0027] Both ends of the lower fixing part 2 are respectively connected to one end of the two spreading parts 3, the other ends of the two spreading parts 3 are respectively connected to one side supporting part 4, and the other ends of the two side supporting parts 4 are respectively connected to both ends of the upper fixing part 1;

[0028] An upper tooth fixing piece 11 is provided on the upper fixing part 1, a lower tooth fixing piece 21 is provided on the lower fixing part 2, and buccal supporting arches 41 are respectively provided on the two side supporting parts 4.

[0029] When the rat mouth opener for rat experiment of the utility model is used, the upper teeth fixing piece 11 of the upper fixing part 1 is matched and put on the maxillary front teeth of the rat, and the lower teeth fixing piece 21 of the lower fixing part 2 is fixed on the mandibular front teeth of the rat; because the two opening parts 3 are respectively connected to the upper fixing part 1 through the side support part 4, that is, when the upper teeth fixing piece 11 on the upper fixing part 1 is matched and fixed to the maxillary front teeth of the rat, the two side support parts 4 are respectively located in the cheeks of the rat's mouth, specifically, the cheek support arch 41 on the side support part 4 is matched and placed between the molars and the cheek mucosa, and the side support part 4 is used to effectively support and fix the cheeks on both sides of the rat, which is conducive to increasing the stability of the rat mouth opener supporting the rat's mouth, and effectively avoiding the movement of the mouth opener due to the movement of the rat's head during the experiment, causing the rat's buccal mucosa to be damaged, and avoiding affecting the life of the rat. The opening part 3 in the present application is a torsion spring, and the setting of the opening part 3 is convenient for the mouth opener to adapt to different oral sizes of rats and improve the adaptability of the mouth opener.

[0030] As a preferred embodiment, the upper teeth fixing part 11 in the present application is a tooth hole. That is, when the rat mouth opening device is used to support the rat's oral cavity, it is only necessary to fit the rat's maxillary front teeth into the tooth hole in a matching manner, and fix and limit the rat's maxillary front teeth through the tooth hole to avoid the situation that the rat's maxillary front teeth are separated from the upper fixing part, thereby ensuring the stability of the rat mouth opening device in supporting the rat's oral cavity. The lower teeth fixing part 21 in the present application is a limiting groove, that is, when the rat mouth opening device is used to support the rat's oral cavity, the rat's mandibular front teeth are matched and placed in the limiting groove, and the mandibular front teeth are limited through the limiting groove to avoid the situation that the mandibular front teeth are separated from the lower fixing part, thereby ensuring the stability of the rat mouth opening device in supporting the rat's oral cavity.

[0031] The cheek support arch 41 in the present application is a side limiting convex strip, which supports the rat's cheek through the cheek support arch 41, and the cheek support arch 41 is located between the molars and the mucosa, which is convenient for the side support part 4 to support the rat's oral cavity, and effectively avoids the displacement of the mouth opener caused by the movement of the rat's head, thereby ensuring the stability of the mouth opener's support for the rat's oral cavity.

[0032] As a preferred embodiment, the upper fixing part 1, the upper tooth fixing piece 11, the lower fixing part 2, the lower tooth fixing piece 21, the two opening parts 3 and the two side supporting parts 4 are all made of steel wire to ensure that the mouth opener as a whole has a certain supporting hardness; and the outer circles of the upper tooth fixing piece 11 and the lower tooth fixing piece 21 are wrapped with a rubber layer 6, and the elastic structure of the rubber layer 6 realizes soft contact between the mouth opener and the upper and lower teeth of the rat, avoiding damage to the upper and lower teeth and the tongue.

[0033] The lower tooth fixing member 21 and the buccal support arch 41 of the present application are both U-shaped structures. The U-shaped structure of the lower tooth fixing member 21 facilitates the limitation of the mandibular teeth and prevents the mandibular teeth from falling out; the U-shaped buccal support arch 41 is arranged between the molar teeth and the buccal mucosa, which facilitates the fixation of the buccal support arch 41 in the oral cavity of the rat and effectively avoids the displacement of the mouth opener in the oral cavity caused by the movement of the rat's head.

[0034] As a preferred embodiment, on the upper part of the lower fixing part 2 of the present application, tongue guides 5 are respectively arranged on both sides of the lower tooth fixing member 21, and the two tongue guides 5 are symmetrically arranged along the lower tooth fixing member 21. The arrangement of the two tongue guides 5 is conducive to fixing the rat's tongue to one side, facilitating a better operation view for rat experiments. Specifically, as Figure 4 shown, A is the left maxillary molar area, B is the right maxillary molar area, C is the left mandibular tongue guiding area, and D is the right mandibular tongue guiding area. When experimental operations need to be performed on the left maxillary molar area A of the rat, the rat's tongue is pulled to the tongue guide 5 at the right mandibular tongue guiding area D for fixation; similarly, when experimental operations need to be performed on the right maxillary molar area B of the rat, the rat's tongue is pulled to the tongue guide 5 at the left mandibular tongue guiding area C for fixation, providing a sufficient view for experimental operations.

[0035] The tongue guide 5 in the present application is a square structure, including a U-shaped frame 51 and a rubber strip 52. The two ends of the rubber strip 52 are respectively connected to the two ends of the U-shaped frame 51. The square-shaped tongue guide 5 is conducive to fixing the rat's tongue and preventing the rat's tongue from falling out of the tongue guide 5; and the rubber strip 52 is arranged lower than the U-shaped frame 51. The U-shaped frame 51 is made of steel wire, and the U-shaped frame 51 enables the tongue guide 5 to have a supporting force. A rubber layer 6 is arranged on the outer circle of the U-shaped frame 51, and the elastic structure of the rubber layer 6 realizes the soft contact between the tongue guide 5 and the rat's tongue, avoiding damage to the rat's tongue; and the arrangement of the rubber strip 52 enables the tongue guide 5 to be deformed, facilitating adaptation to rat tongues of different sizes and improving the adaptability of the tongue guide 5.

[0036] As Figure 5 shown, a plurality of inclined protrusions 53 are arranged on the inner walls of the U-shaped frame 51 and the rubber strip 52 in the present application. The arrangement of the protrusions 53 is conducive to increasing the friction force between the tongue guide 5 and the rat's tongue, improving the stability of the fixation of the tongue guide 5 to the rat's tongue, and preventing the rat's tongue from falling out of the tongue guide 5.

[0037] In the description of this specification, the description with reference to terms such as "one embodiment", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] In summary, although the present utility model has been disclosed above with the preferred embodiments, the above preferred embodiments are not intended to limit the present utility model. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model is subject to the scope defined by the claims.

Claims

1. A rat mouth opener for rat experiments, characterized in that: It comprises an upper fixing portion (1), a lower fixing portion (2), two opening portions (3) and two side supporting portions (4); The two ends of the lower fixing portion (2) are respectively connected to one end of the two opening portions (3); the other ends of the two opening portions (3) are respectively connected to a side supporting portion (4); and the other ends of the two side supporting portions (4) are respectively connected to the two ends of the upper fixing portion (1); An upper tooth fixing part (11) is provided on the upper fixing part (1), a lower tooth fixing part (21) is provided on the lower fixing part (2), and cheek support arches (41) are respectively provided on the two side support parts (4).

2. The rat mouth opener for rat experiments according to claim 1, characterized in that: The upper tooth fixing piece (11) is a tooth hole.

3. The rat mouth opener for rat experiments according to claim 2, characterized in that: The lower tooth fixing piece (21) is a limiting groove.

4. The rat mouth opener for rat experiments according to claim 3, characterized in that: The cheek support arch (41) is a side limiting convex strip.

5. The rat mouth opener for rat experiments according to claim 1, characterized in that: The upper fixing part (1), the upper tooth fixing piece (11), the lower fixing part (2), the lower tooth fixing piece (21), the two spreading parts (3) and the two side supporting parts (4) are all made of steel wire, and the outer rings of the upper tooth fixing piece (11) and the lower tooth fixing piece (21) are both wrapped with a rubber layer (6).

6. The rat mouth opener for rat experiments according to claim 1, characterized in that: The expansion portion (3) is a torsion spring.

7. The rat mouth opener for rat experiments according to claim 3, characterized in that: The lower tooth fixing member (21) and the cheek support arch (41) are both U-shaped structures.

8. The rat mouth opener for rat experiments according to claim 1, characterized in that: Tongue guides (5) are respectively provided on the lower fixing portion (2) and on both sides of the lower tooth fixing piece (21), and the two tongue guides (5) are symmetrically arranged along the lower tooth fixing piece (21).

9. The rat mouth gag for rat experiments according to claim 8, characterized in that: The tongue guide (5) is a square structure, comprising a U-shaped frame (51) and a rubber strip (52), the two ends of the rubber strip (52) being respectively connected to the two ends of the U-shaped frame (51), and the rubber strip (52) being arranged below the U-shaped frame (51), the U-shaped frame (51) being made of steel wire, and the outer ring of the U-shaped frame (51) being provided with a rubber layer (6).

10. The rat mouth opener for rat experiments according to claim 9, characterized in that: The inner wall of the U-shaped frame (51) and the inner wall of the rubber strip (52) are both provided with a plurality of inclined convex strips (53).

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