Mouth gag for laboratory mouse
By designing a V-shaped elastic member and a rotary fixer, the problem of difficulty in two-hand operation in the prior art was solved, and one-hand operation and long-term oral opening were achieved to adapt to the needs of experimental mice of different body types.
Patent Information
- Application Number
- CN202422102376.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The existing experimental mouse mouth opening device requires both hands to operate, and it is difficult to keep the mouth open for a long time, which leads to difficulty in operation and requires at least two people to cooperate.
A test mouse mouth opening device including a V-shaped elastic member and a fixer is designed. The connecting rod of the V-shaped elastic member is rotatable and combined with a telescopic structure, the mouth of the test mouse can be opened by one hand operation, and the oral cavity is opened through the elastic member.
One-handed operation is achieved, and the other hand can assist in fixing the experimental mice. The oral opening can be completed by a single person to avoid tooth damage, adapt to experimental mice of different sizes, and reduce costs.
Smart Images
Figure CN223111855U_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of auxiliary instruments for animal medical experiments, and particularly relates to an experimental mouse mouth opener. Background Art
[0002] Large (small) mice are commonly used experimental animals in basic oral medicine experiments. Under natural conditions, the mouth of the experimental mouse is closed, and it is necessary to continuously open its mouth to a large extent for operation. Otherwise, there will be problems with the experimental operation vision, resulting in increased operation difficulty. Auxiliary devices are often needed to increase the opening degree and improve the convenience of experimental operation.
[0003] At present, most experimental mouse mouth openers are spiral knob expanders. It is very difficult to operate with one hand, and it requires two hands of a single person to operate simultaneously to complete the expansion of the mouth of the large (small) mouse. It is inconvenient to use. At the same time, keeping the mouth of the large (small) mouse open with both hands means that at least one more person is needed to fix the experimental mouse, resulting in at least two people being required to operate simultaneously to complete the experiment. Utility Model Content
[0004] The purpose of the present utility model is to provide an experimental mouse mouth opener to solve the problems existing in the above-mentioned prior art, enabling the operator to operate the experimental mouse mouth opener with one hand. The operator's other hand can assist in fixing the experimental mouse, and one person can complete the operation of opening the mouse's mouth. Moreover, the experimental mouse mouth opener has a large self-elasticity, which can effectively prevent the laboratory mouth from closing and ensure that the laboratory mouth remains open all the time, facilitating the operator to conduct experiments.
[0005] To achieve the above purpose, the present utility model provides the following solutions:
[0006] The present utility model provides an experimental mouse mouth opener, including a V-shaped elastic member, and the V-shaped elastic member includes an elastic part and two connecting rods respectively located at both ends of the elastic part;
[0007] At one end of the two connecting rods away from the elastic part, an upper incisor fixator and a lower incisor fixator are provided. The upper incisor fixator rotates inward by 20° - 30° around the axis of the connecting rod to which it is connected, and the lower incisor fixator rotates inward by 20° - 30° around the axis of the connecting rod to which it is connected.
[0008] Preferably, the overall length of the combination of the V-shaped elastic member, the connecting rod, and the upper incisor fixator is 20 millimeters - 30 millimeters;
[0009] The overall length of the combination of the V-shaped elastic member, the connecting rod, and the lower incisor fixator is 20 millimeters - 30 millimeters.
[0010] Preferably, the upper incisor retainer has a rectangular through-hole inside, the four corners of the rectangular through-hole are rounded, the length of the rectangular through-hole is 4 mm - 7 mm, and the width of the rectangular through-hole is 3.5 mm - 5 mm.
[0011] Preferably, the lower incisor retainer has a water-drop-shaped through-hole inside, and the diameter of the water-drop-shaped through-hole is 3.5 mm - 5 mm.
[0012] Preferably, the inward rotation angle of the upper incisor retainer is 25°.
[0013] Preferably, the inward rotation angle of the lower incisor retainer is 25°.
[0014] Preferably, the elastic part is a coil spring, and the two connecting rods are respectively connected to different ends of the coil spring.
[0015] Preferably, the V-shaped elastic member, the upper incisor retainer and the lower incisor retainer are made of stainless steel wire.
[0016] Preferably, the diameter of the stainless steel wire is 0.4 mm - 1 mm.
[0017] Preferably, the connecting rod is a telescopic structure, and a telescopic part is arranged on the connecting rod.
[0018] The utility model has achieved the following technical effects compared with the prior art:
[0019] The utility model provides an experimental mouse mouth opener, which enables the operator to operate the experimental mouse mouth opener with one hand, and the operator's other hand can assist in fixing the experimental mouse, so that one person can complete the operation of opening the mouse's mouth. Moreover, the experimental mouse mouth opener has a relatively large self-elasticity, which can effectively prevent the laboratory mouth from closing, ensure that the laboratory mouth remains open all the time, and facilitate the operator to conduct experiments.
[0020] The utility model has also achieved the following technical effects compared with the prior art:
[0021] 1. In the utility model, the upper incisor retainer has a rectangular through-hole with rounded corners at the edges inside, and the lower incisor retainer has a water-drop-shaped through-hole inside, which can better fit the tooth surface of the experimental mouse during the expansion process and avoid breaking the mouse teeth;
[0022] 2. In the utility model, the connecting rod is a telescopic structure, which can conveniently match experimental mice of different body sizes, meet the requirements of using one experimental mouse mouth opener for multiple groups of experiments, and save costs. Description of the Drawings
[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0024] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;
[0025] Figure 2 Schematic diagram of the overall structure of the present invention Figure 2 ;
[0026] Figure 3 Schematic diagram of the overall structure of the present invention Figure 3 ;
[0027] Figure 4 Schematic diagram of the overall structure with a telescopic function in the present invention.
[0028] Wherein, 1, V-shaped elastic member; 11, elastic part; 12, connecting rod; 13, telescopic part; 2, upper incisor fixator; 3, lower incisor fixator. Detailed implementation manners
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0030] The present invention provides an experimental mouse mouth opener, enabling the operator to operate the experimental mouse mouth opener with one hand, and the operator's other hand can assist in fixing the experimental mouse. One person can complete the operation of opening the mouse's mouth, and the experimental mouse mouth opener has a relatively large elastic force, which can effectively prevent the laboratory mouth from closing, ensuring that the laboratory mouth remains open all the time, facilitating the operator to conduct experiments.
[0031] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.
[0032] Such as Figures 1-4As shown in the figure, the present utility model provides an experimental mouse mouth opener, which includes a V-shaped elastic member 1. The V-shaped elastic member 1 includes an elastic part 11 and two connecting rods 12 respectively located at both ends of the elastic part 11. At the ends of the two connecting rods 12 away from the elastic part 11, there are an upper incisor fixator 2 and a lower incisor fixator 3. The upper incisor fixator 2 rotates inward by 20-30° around the axis where the connecting rod 12 it is connected to is located, and the lower incisor fixator 3 rotates inward by 20-30° around the axis where the connecting rod 12 it is connected to is located. The inward rotation means that the upper incisor fixator 2 and the lower incisor fixator 3 rotate towards each other. The rotation angle range of the upper incisor fixator 2 and the lower incisor fixator 3 conforms to the shape of the mouth of the experimental mouse, enabling the upper incisor fixator 2 and the lower incisor fixator 3 to better support the upper and lower jaws of the experimental mouse.
[0033] In one embodiment, the overall length of the combination of the V-shaped elastic member 1, the connecting rod 12 and the upper incisor fixator 2 is 20 mm - 30 mm, and the overall length of the combination of the V-shaped elastic member 1, the connecting rod 12 and the lower incisor fixator 3 is 20 mm - 30 mm. When using rats for experiments, the length is 30 mm or close to 30 mm, and when using mice for experiments, the length is 20 mm or close to 20 mm.
[0034] As Figure 1 shown, the inside of the upper incisor fixator 2 is a rectangular through-hole, and the four corners of the rectangular through-hole are rounded. Such a design can prevent the upper incisors of the experimental mouse from being squeezed and broken by the upper incisor fixator 2. The length of the rectangular through-hole is 4 mm - 7 mm, and the width of the rectangular through-hole is 3.5 mm - 5 mm. The specific dimensions of the upper incisor fixator 2 can be designed as various length-width combinations matching the body size and upper incisor size of the experimental mouse.
[0035] As Figure 1 shown, the inside of the lower incisor fixator 3 is a water-drop-shaped through-hole. Such a design can prevent the lower incisors of the experimental mouse from being squeezed and broken by the lower incisor fixator 3. The area for fixing the lower incisors in the water-drop-shaped through-hole is a circular area, and the diameter of the circular area is 3.5 mm - 5 mm. The specific dimensions of the lower incisor fixator 3 can be designed as various dimensions matching the body size and lower incisor size of the experimental mouse.
[0036] In a preferred example, the inward rotation angle of the upper incisor fixator 2 is 25°, and the inward rotation of the lower incisor fixator 3 is 25°.
[0037] As Figures 1-4As shown, the elastic part 11 is a coil spring, and the two connecting rods 12 are respectively connected to different ends of the coil spring. The elastic part 11 can also be a spring horizontally arranged between the two connecting rods 12. The tops of the two connecting rods 12 are hinged, and the horizontally arranged spring can provide elastic force for the two connecting rods 12.
[0038] In a preferred embodiment, the V-shaped elastic member 1, the upper incisor fixator 2, and the lower incisor fixator 3 are made of stainless steel wire. The diameter of the stainless steel wire is 0.4 mm - 1 mm. When the experimental mouse is larger in size, the diameter of the stainless steel wire is preferably 1 mm. When the experimental mouse has a medium body size, the diameter of the stainless steel wire is preferably 0.7 mm. When the experimental mouse is smaller in size, the diameter of the stainless steel wire is preferably 0.4 mm.
[0039] As Figure 4 As shown, the connecting rod 12 is a telescopic structure, and a telescopic part 13 is arranged on the connecting rod 12. The length of the telescopic part 13 can be adjusted, so that the overall length of the connecting rod is adjusted to ensure that it can meet the use of experimental rabbits of different body sizes.
[0040] When the utility model is in use, the operator first grabs the experimental mouse with one hand and squeezes the face of the experimental mouse to separate the upper incisors and the lower incisors of the experimental mouse. The operator pinches the connecting rod 12 inward with the other hand, so that the upper incisor fixator 2 and the lower incisor fixator 3 can penetrate between the upper incisors and the lower incisors of the experimental mouse, and align the upper incisor fixator 2 with the upper incisors of the experimental mouse and the lower incisor fixator 3 with the lower incisors of the experimental mouse. Then, slowly release the connecting rod 12, so that the upper incisor fixator 2 pushes the upper incisors of the experimental mouse and the lower incisor fixator 3 pushes the lower incisors of the experimental mouse to open the mouth of the experimental mouse.
[0041] Specific examples are applied in the utility model to elaborate on the principle and implementation manner of the utility model. The description of the above embodiments is only used to help understand the method and its core idea of the utility model; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the utility model.
Claims
1. An experimental mouse mouth opener, characterized in that: It includes a V-shaped elastic member (1), and the V-shaped elastic member (1) includes an elastic part (11) and two connecting rods (12) respectively located at both ends of the elastic part (11); At one end of the two connecting rods (12) away from the elastic part (11), an upper incisor fixator (2) and a lower incisor fixator (3) are provided. The upper incisor fixator (2) rotates inwards by 20° - 30° around the axis where the connecting rod (12) it is connected to is located, and the lower incisor fixator (3) rotates inwards by 20° - 30° around the axis where the connecting rod (12) it is connected to is located.
2. The experimental mouse mouth opener according to claim 1, characterized in that: The overall length of the combination of the V-shaped elastic member (1), the connecting rod (12) and the upper incisor fixator (2) is 20 mm - 30 mm; The overall length of the combination of the V-shaped elastic member (1), the connecting rod (12) and the lower incisor fixator (3) is 20 mm - 30 mm.
3. The experimental mouse mouth opener according to claim 1, wherein: The inside of the upper incisor fixator (2) is a rectangular through-hole, the four corners of the rectangular through-hole are rounded, the length of the rectangular through-hole is 4 mm - 7 mm, and the width of the rectangular through-hole is 3.5 mm - 5 mm.
4. The experimental mouse mouth opener according to claim 1, characterized in that: The inside of the lower incisor fixator (3) is a water-drop-shaped through-hole, and the area for fixing the lower incisors in the water-drop-shaped through-hole is a circular area, and the diameter of the circular area is 3.5 mm - 5 mm.
5. The experimental mouse mouth opener according to claim 1, characterized in that: The inward rotation angle of the upper incisor fixator (2) is 25°.
6. The experimental mouse mouth opener according to claim 1, characterized in that: The inward rotation angle of the lower incisor fixator (3) is 25°.
7. The experimental mouse mouth opener according to claim 1, characterized in that: The elastic part (11) is a coil spring, and the two connecting rods (12) are respectively connected to different ends of the coil spring.
8. The experimental mouse mouth opener according to claim 1, characterized in that: The V-shaped elastic member (1), the upper incisor fixator (2) and the lower incisor fixator (3) are made of stainless steel wire.
9. The experimental mouse mouth opener according to claim 8, characterized in that: The diameter of the stainless steel wire is 0.4 mm - 1 mm.
10. The experimental mouse mouth opener according to claim 1, characterized in that: The connecting rod (12) is a telescopic structure, and a telescopic part (13) is provided on the connecting rod (12).