CN219626184U - A bionic device for multi-cusp teeth - Google Patents

Abstract

The utility model relates to a bionic device of multi-cusp teeth, comprising: a lower jaw member, wherein one side of the lower jaw member is provided with a first multi-cusp tooth, the chewing side of the first multi-cusp tooth is provided with at least 5 cusps, and the cusps are in a prismatic table shape; the upper jaw component can be lifted, and one side of the upper jaw component, which is close to the lower jaw component, is provided with a second multi-cusp tooth, and the second multi-cusp tooth corresponds to the first multi-cusp tooth in position. The bionic device for the teeth with multiple tooth tips can reduce chewing time and improve chewing efficiency.

Description

A bionic device for multi-cusp teeth

technical field

The utility model relates to the technical field of tooth bionic devices, in particular to a bionic device for teeth with multiple cusps.

Background technique

The artificial oral machine in vitro is mainly used to simulate the process of chewing food in the human mouth, and to test the efficiency of teeth chewing food. At present, artificial teeth in vitro generally use bionic teeth when chewing food, and usually bionic teeth are mainly similar to human teeth. The current bionic teeth have 4 cusps. When using bionic teeth to chew food, it takes longer to chew, and the cusps of the current bionic teeth are not sharp enough, so more chewing force is needed to chew the food.

Utility model content

Therefore, the technical problem to be solved by the utility model is to provide a bionic device for multi-cusp teeth, which can reduce chewing time and improve chewing efficiency.

In order to solve the above technical problems, the utility model provides a bionic device for multi-cusp teeth, comprising: a lower jaw member, one side of the lower jaw member is provided with first multi-cusp teeth, the first multi-cusp teeth The chewing side is provided with at least 5 cusps, and the cusps are prism-shaped; the upper jaw component, the upper jaw component can be lifted, and the side of the upper jaw component close to the lower jaw component is provided with second multi-cusp teeth, so The positions of the second multi-cusp teeth correspond to the positions of the first multi-cusp teeth.

In one embodiment of the present invention, the cusps are arranged in multiple rows in parallel, and a concave arc-shaped groove is provided between the cusps of two adjacent rows.

In one embodiment of the present invention, a plurality of the cusps are provided in a single row, and the connection positions between adjacent cusps are in a concave arc shape.

In one embodiment of the present utility model, the first multi-cusp teeth are arranged longitudinally, and the centerlines of the grooves are located on the same straight line.

In one embodiment of the present invention, a base is provided on the side of the lower jaw member away from the first multi-cusp teeth, and the base includes a bottom plate, and a side wall is vertically surrounded on the bottom plate, and the inner side of the side wall is A chewing cavity is formed, a first opening is provided on the side wall, and the lower jaw member can enter into the chewing cavity through the first opening.

In one embodiment of the present utility model, a stopper is provided on the lower jaw member, the height of the first opening is higher than the top end of the stopper, and a second opening is provided on the side wall opposite to the first opening, The height of the second opening is lower than the top end of the stopper.

In an embodiment of the present utility model, a saliva injection member is provided on the side of the upper jaw member away from the second multi-cuspid teeth, and the saliva injection member includes a liquid outlet connected to the upper jaw member and a liquid outlet connected to the outlet hole. the injection hole.

In one embodiment of the present utility model, the side of the upper jaw member on which the second multi-cuspid teeth is installed is provided with a convex rib, and the end of the convex rib is provided with a first installation groove, and the first installation groove It is used for installing the second multi-cusp tooth, and the width of the first installation groove is greater than the width of the second multi-cusp tooth.

In one embodiment of the present utility model, the position of the upper jaw assembly corresponding to the liquid outlet is provided with a first through hole, the first through hole communicates with the liquid outlet, and the first through hole is connected to the first installation The bottom of the tank is connected.

In one embodiment of the present invention, there is a gap between the second multi-cusp teeth and the side wall of the first installation groove, and the first through hole is located at the bottom of the gap.

Compared with the prior art, the above-mentioned technical solution of the utility model has the following advantages:

A bionic device for multi-cusp teeth according to the utility model, through the design of the first multi-cusp teeth and the second multi-cusp teeth as six cusps, the number of cusps is more than that of the bionic teeth, and The cusps are protruding prisms, which are sharper than those of bionic teeth, so that the teeth with multiple cusps need less time to chew food, and the required chewing force is smaller, and the chewing efficiency is higher; through two adjacent rows of teeth The arc-shaped groove between the cusps and the connection position between two adjacent cusps are in a concave arc shape, so that food is not easy to remain and is easy to clean.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be described in further detail below according to specific embodiments of the utility model in conjunction with the accompanying drawings, wherein

Fig. 1 is a schematic structural diagram of a bionic device of a multi-cusp tooth of the present invention;

Fig. 2 is a schematic diagram of the structure of the lower jaw member in Fig. 1;

Fig. 3 is a schematic diagram of the structure of the first multi-cusp tooth in Fig. 1;

Fig. 4 is a schematic diagram of the structure of the base in Fig. 1;

Fig. 5 is a top structural schematic view of the upper jaw member in Fig. 1;

Fig. 6 is a schematic bottom view of the upper jaw member in Fig. 1;

Fig. 7 is a schematic structural view of the saliva injection member in Fig. 1;

Fig. 8 is the cumulative particle size distribution figure of chewing rice experiment;

Fig. 9 is the cumulative particle size distribution figure of chewing peanut experiment;

Figure 10 is a graph of the cumulative particle size distribution for the carrot chewing experiment.

Explanation of reference signs in the manual: 1. Base; 2. Lower jaw member; 3. Upper jaw member; 4. Saliva injection member; 5. First multi-cusp teeth; 6. Second multi-cusp teeth; 11. Base plate; 12. Side wall; 13. First opening; 14. Second opening; 15. Outlet; 16. Inlet; 21. Inclined surface; 22. Block; 31. First through hole; 32. Convex rib; 33 , the first installation groove; 41, the liquid injection hole; 42, the liquid outlet hole; 51, the tooth cusp; 52, the groove.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the utility model and implement it, but the examples given are not intended to limit the utility model.

Referring to Fig. 1, a bionic device of a multi-cusp tooth of the present invention comprises: a lower jaw member 2, one side of the lower jaw member 2 is provided with a first multi-cusp tooth 5, and the first multi-cusp tooth The chewing side of the tooth 5 is provided with at least 5 cusps 51, and the cusps 51 are prism-shaped; There is a second multi-cusp tooth 6 corresponding to the position of the first multi-cusp tooth 5 .

A bionic device for multi-cuspid teeth of the present utility model, through the lifting and lowering of the upper jaw member 3, the second multi-cuspid teeth 6 are lifted and lowered, simulating the chewing process. Since the chewing side of the first multi-cusp tooth 5 is provided with at least 5 cusps 51, which are more than the 4 cusps of the bionic teeth, the time required for chewing with multi-cusp teeth is shorter, and the cusps 51 are in the shape of a truss , Compared with the shape of the cusp of the bionic teeth, the shape of the cusp is sharper, so the required chewing force is smaller and the chewing efficiency is higher.

Referring to Fig. 2, the lower jaw member 2 is in the shape of a plate as a whole. The upper side of the lower jaw member 2 is longitudinally and parallelly provided with two rows of second installation grooves, and the bottom of the second installation grooves is provided with threaded holes, and the first multi-cuspid teeth 5 are fixed in the second installation grooves by screws. In one embodiment, the first multi-cusp tooth 5 can also be fixed to the second installation groove by glue. Stoppers 22 are also symmetrically arranged on the upper edge of the first lower jaw member 2 . The lower jaw member 2 is perpendicular to the bottom plate 11 and the side close to the block 22 is an outwardly protruding inclined surface 21 , so that the length of the bottom surface of the lower jaw member 2 is longer than that of the upper surface.

Referring to Fig. 3, six cusps 51 are arranged on the chewing side of the first multi-cusp tooth 5, and the cusps 51 are in the shape of a prism protruding upward, and the angle between the outer surface of the prism and the bottom surface is relatively large. Thus, the pyramid-shaped tooth cusp 51 is sharper than the bionic tooth cusp. Two rows of cusps 51 are arranged in parallel on the chewing side of the single first multi-cusp tooth 5 , and a total of three cusps 51 are arranged in a single row. A concave arc-shaped groove 52 is provided between two adjacent rows of cusps 51, and the connection position between two adjacent teeth cusps 51 in a single row is in a concave arc shape, and the arc-shaped groove 52 and the connection position are not easy to leave food residues, and Easy to clean up. The single-row second mounting grooves are arranged longitudinally, so that the first multi-cusp teeth 5 are arranged longitudinally, and the cusps 51 are arranged in two rows longitudinally, and the centerlines of the grooves 52 are located on the same longitudinal straight line.

Referring to FIG. 4 , the base 1 includes a bottom plate 11 and a side wall 12 vertically surrounding and fixed on the bottom plate 11 . A plurality of countersunk holes are provided on both sides of the upper surface of the base plate 11 for fixing the base plate 11 to the outside. A plurality of countersunk holes are provided in the middle of the lower surface of the bottom plate 11 for fixing the bottom plate 11 and the lower jaw member 2 . The bottom of the lower jaw member 2 is provided with a plurality of threaded holes, so that the installation position of the lower jaw member 2 can be adjusted. The side wall 12 includes side walls 12 in 4 directions of front, back, left and right, and the inside of the side wall 12 forms a chewing cavity. The bottom of the front side wall 12 is provided with a first opening 13, the first opening 13 is rectangular, the first opening 13 is matched with the lower jaw member 2, and the height of the first opening 13 is higher than the top of the stopper 22, so that the lower jaw member 2 can be completely moved by The first opening 13 enters into the chewing cavity. The side wall 12 on the opposite side of the first opening 13 is provided with a second opening 14, the height of the second opening 14 is lower than the top of the stopper 22, but higher than the thickness of the lower jaw member 2, so that the opposite side of the stopper 22 on the lower jaw member 2 can be The second opening 14 protrudes from the side wall 12 . The sidewalls 12 on the front and rear sides are respectively provided with a discharge port 15 and a feed port 16 , the discharge port 15 communicates with the first opening 13 , and the feed port 16 communicates with the second opening 14 . Before the experiment starts, food can be put into the chewing cavity from the feeding port 16 , and after the experiment is over, the food particles can be cleaned from the discharging port 15 to the outside of the chewing cavity and slide down through the inclined surface 21 . In one embodiment, the sidewalls 12 on the left and right sides are also provided with circular mounting holes, and a cylinder is provided at the position corresponding to the mounting holes on the outside of the base 1, and the telescopic rod of the cylinder extends into the chewing cavity through the mounting hole, and the telescopic rod A baffle is provided at the end, and the baffle can move in the chewing cavity. The motor can also be arranged outside the mounting hole, the output end of the motor is connected with a lead screw, and the movable nut on the lead screw is connected with a connecting rod protruding toward the chewing cavity, and the connecting rod passes through the mounting hole and is connected with the baffle in the chewing cavity , so that the baffle can also move in the chewing cavity. During the chewing experiment, the baffle can push the food to the side of the teeth, simulating the movement of the human tongue. The setting of the stopper 22 can prevent the lower jaw member 2 from accidentally falling from the opposite side during installation, and can prevent the lower jaw member 2 from being installed in the wrong direction. The setting of the second opening 14 enables the lower jaw member 2 to be installed at different positions on the bottom plate 11 when different teeth are installed on the lower jaw member 2, and the installation position of the lower jaw member 2 can be flexibly adjusted. The setting of the inclined surface 21 of the lower jaw member 2 leaves a gap between the lower jaw member 2 and the inner wall on the upper side of the first opening 13 , making it easier to take out the lower jaw member 2 .

With reference to Fig. 5 and shown in Fig. 6, the upper left and right edges of the upper jaw member 3 are provided with protrusions, which are used to fix the saliva injection member 4 when the protrusion is used to install the saliva injection member 4, so as to prevent the saliva injection member 4 from shaking. A counterbore is provided at a position opposite to the inner side of the protrusion, and the counterbore is used for fixing the second multi-cuspid tooth 6 . A first through hole 31 is provided at a position opposite to the inner side of the protrusion, and the first through hole 31 penetrates the upper jaw member 3 longitudinally. A threaded through hole is provided at the inner side of the first through hole 31 , and the threaded through hole is used for connecting the palate component 3 and the saliva injection component 4 . The left and right edges of the lower side of the upper jaw member 3 are provided with convex ribs 32, and the lower side of the convex ribs 32 is provided with a first installation groove 33, and the width of the first installation groove 33 is greater than the width of the second multi-cusp teeth 6. The first installation groove 33 The bottom communicates with the counterbore on the upper side of the upper jaw member 3, and the second multi-cuspid teeth 6 are installed in the first installation groove 33 by screws. The first through hole 31 communicates with the side of the bottom of the first installation groove 33 close to the central axis of the upper jaw member 3, and the second multi-cusp teeth 6 are installed in the first installation groove 33 near the outer side of the upper jaw member 3, so that the second multi-cusp There is a gap between the cusp teeth 6 and the side wall 12 of the first installation groove 33 , and the first through hole 31 communicates with the outside through the gap. The structure of the second multi-cusp tooth 6 corresponds to the installation position of the first multi-cusp tooth 5 , and the structure is the same as that of the first multi-cusp tooth 5 , which will not be repeated here.

Referring to FIG. 7 , the lower edge of the saliva injection member 4 is provided with a plurality of outlet holes 42 . A threaded hole is provided at the middle position of the lower side of the saliva injection member 4, and the threaded hole is connected with the threaded through hole of the upper jaw member 3 by screws. A liquid injection hole 41 is provided on the side wall 12 of the saliva injection member 4 , and the liquid injection hole 41 communicates with the liquid outlet hole 42 . The outside injects saliva into the liquid injection hole 41 through the pipeline, passes through the liquid outlet hole 42 and the first through hole 31 , and finally flows out from the gap between the second multi-cuspid tooth 6 and the side wall 12 of the first installation groove 33 . The upper side of the saliva injection component 4 is provided with a lifting device, and the lifting device is connected by a motor and a lead screw. The movable nut of the lead screw is fitted with a connecting plate protruding downward, and the bottom of the connecting plate is connected with the saliva injection component 4, and the motor drives the movement. The nut moves, thereby enabling the saliva injection member 4 to move up and down.

During use, at first the first multi-cusp tooth 5 is installed in the second installation groove of the lower jaw member 2, and the second multi-cusp tooth 6 is installed in the first installation groove 33 of the upper convex rib 32 of the upper jaw member 3; then The lower jaw component 2 is installed on the base plate 11, the upper jaw component 3 is installed on the lower side of the saliva injection component 4, and the position of the lower jaw component 2 is adjusted so that the first multi-cusp teeth 5 correspond to the second multi-cusp teeth 6 positions; Food is put into the chewing cavity, and the saliva injection member 4 rises and falls together with the upper jaw member 3 to chew the food, and at the same time, saliva is injected into the liquid injection hole 41 through the pipeline, and passes through the liquid outlet hole 42 and the first through hole 31, and finally from the The gap between the second multi-cusp teeth 6 and the side wall 12 of the first mounting groove 33 flows out to mix the saliva with the food; in the middle of chewing, the baffle plate pushes the food to move to both sides to make the chewing more fully.

The chewing experiment of rice, peanut and carrot was carried out by a bionic device with multi-cusp teeth, and the control experiment was carried out with bionic teeth.

How to handle food:

Rice: According to the ratio of water to rice is 1.5:1, after 30 minutes of cooking, take 10g for each experiment.

Peanuts: Peanuts are treated in a microwave oven on high heat for 3 minutes, and then the red skin of the peanuts is removed. Take 6g for each experiment.

Carrots: Fresh carrots were cut into diced carrots of 1 cubic centimeter, and 6g was taken for each experiment.

Settings for saliva flow rate:

The saliva flow rate was set at 1.85mL/min during the rice chewing experiment.

The saliva volume was set at 1.13mL/min during the peanut chewing experiment.

The amount of saliva was set at 0.2 mL/min during the experiment of chewing carrots.

Squeeze settings:

The number of extrusions for the rice is set to 16.

The number of extrusions for the peanuts is set to 44.

The number of squeezes on the carrots was set to 30.

The chewing force is set to 500N and 250N according to the difference between the young and the old.

After the chewing experiment, wet sieve the food particles collected after chewing. After sieving, the food particle diameter d is divided into four categories, namely, the food particle diameter d is greater than 5 mm, the food particle diameter d is less than 5 mm and greater than 2 mm, and the food particle diameter d is greater than 2 mm. The particle diameter d is less than 2 mm and greater than 1 mm, and the food particle diameter d is less than 1 mm. The separated samples are put into a weighing bottle, and dried in an oven at 105 degrees Celsius, and the dry weight is measured. Finally, the food particle diameter d is greater than 5 mm and The proportion of food particles whose diameter d is less than 1 mm, where the food particle diameter d is greater than 5 mm is called large particle size, and the food particle diameter d is less than 1 mm is called small particle size. Each type of tooth was repeated three times, and the average value was taken.

See Figure 8 and the following table for the results of the rice chewing experiment with bionic teeth and multi-cusp teeth:

Table of the difference in particle size ratio between bionic teeth and multi-cusp teeth chewing rice experiment:

Proportion of small particle size Large particle size ratio Bionic teeth-250N 48.74% 8.57% Bionic teeth-500N 54.11% 6.94% Multi-cusp Teeth - 250N 55.12% 4.29% Multi-cusp teeth-500N 59.80% 3.36%

It can be seen from the above that under the same parameters, the proportion of small particle size of multi-cusp teeth is higher than that of bionic teeth, and the proportion of large particle sizes is lower than that of bionic teeth. Therefore, the chewing efficiency of multi-cusp teeth is higher than that of bionic teeth.

See Figure 9 and the table below for the results of the peanut chewing experiment with bionic teeth and multi-cusp teeth:

Table of particle size ratio difference between bionic teeth and multi-cusp teeth chewing peanut experiment:

Proportion of small particle size Large particle size ratio Bionic teeth-250N 45.97% 6.28% Bionic teeth-500N 53.66% 2.24% Multi-cusp Teeth - 250N 56.90% 0% Multi-cusp teeth-500N 61.62% 0%

It can be seen from the above that under the same parameters, the proportion of small particle size of multi-cusp teeth is higher than that of bionic teeth, and the proportion of large particle sizes is lower than that of bionic teeth. Therefore, the chewing efficiency of multi-cusp teeth is higher than that of bionic teeth.

See Figure 10 and the table below for the experimental results of the bionic teeth and multi-cusp teeth chewing carrots:

Table of the particle size ratio difference between bionic teeth and multi-cusp teeth chewing carrot experiment:

It can be seen from the above that under the same parameters, the proportion of small particle size of multi-cusp teeth is higher than that of bionic teeth, and the proportion of large particle sizes is lower than that of bionic teeth. Therefore, the chewing efficiency of multi-cusp teeth is higher than that of bionic teeth.

From the above experimental results, it can be seen that the mastication efficiency of multi-cuspid teeth is generally higher than that of bionic teeth.

A bionic device for multi-cusp teeth of the present utility model, through the design of the first multi-cusp teeth 5 and the second multi-cusp teeth 6 as six cusps 51, compared with the bionic teeth, the number of cusps is more, And the cusp 51 adopts a protruding truss shape, which is sharper than the cusp of the bionic tooth, so that the multi-cusp teeth need less time to chew food, and the required chewing force is smaller, and the chewing efficiency is higher; The arc-shaped groove 52 between the row of cusps 51 and the connecting position between two adjacent cusps 51 are in a concave arc shape, so that food is not easy to remain and easy to clean; by setting the saliva injection member 44, the environment in the chewing cavity It is closer to the chewing environment of the human body; through the control experiment between multi-cusp teeth and bionic teeth, it is verified that the chewing efficiency of multi-cusp teeth is higher than that of bionic teeth.

Apparently, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in various forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (10)

1. A bionic device for multi-cusp teeth, characterized in that it comprises: A mandibular component, one side of the mandibular component is provided with a first multi-cusp tooth, the chewing side of the first multi-cusp tooth is provided with at least 5 cusps, and the cusp is in the shape of a pyramid; The upper jaw component can be lifted and lowered, and the side of the upper jaw component close to the lower jaw component is provided with second multi-cusp teeth, and the position of the second multi-cusp teeth corresponds to the position of the first multi-cusp teeth. 2. The bionic device for teeth with multiple cusps according to claim 1, wherein the cusps are arranged in multiple rows in parallel, and a concave arc-shaped groove is provided between the cusps of two adjacent rows. 3 . The bionic device for multi-cusp teeth according to claim 2 , wherein a plurality of cusps are provided in a single row, and the connecting positions between adjacent cusps are in a concave arc shape. 4 . 4. The bionic device for multi-cusp teeth according to claim 2, characterized in that: the first multi-cusp teeth are arranged longitudinally, and the centerlines of the grooves are located on the same straight line. 5. The bionic device of multi-cusp teeth according to claim 1, characterized in that: the side of the lower jaw member away from the first multi-cusp teeth is provided with a base, and the base includes a bottom plate, and the bottom plate is vertical Surrounded by side walls, a chewing cavity is formed on the inner side of the side walls, a first opening is set on the side walls, and the lower jaw member can enter the chewing cavity through the first opening. 6. The bionic device for multi-cusp teeth according to claim 5, wherein a block is provided on the lower jaw member, the height of the first opening is higher than the top of the block, and the first opening is opposite to the top of the block. A second opening is provided on the side wall of the side, and the height of the second opening is lower than the top end of the stopper. 7. The bionic device for multi-cuspid teeth according to claim 1, characterized in that: the side of the upper jaw member away from the second multi-cusp teeth is provided with a saliva injection member, and the saliva injection member includes a joint with the upper jaw member The liquid outlet hole communicated with the liquid outlet hole and the liquid injection hole communicated with the liquid outlet hole. 8. The bionic device for multi-cuspid teeth according to claim 7, characterized in that: the side of the upper jaw member on which the second multi-cuspid teeth is installed is provided with a convex rib, and the end of the convex rib is provided with A first installation groove, the first installation groove is used to install the second multi-cusp tooth, and the width of the first installation groove is greater than the width of the second multi-cusp tooth. 9. The bionic device for multi-cusp teeth according to claim 8, characterized in that: the position of the upper jaw member corresponding to the liquid outlet is provided with a first through hole, and the first through hole communicates with the liquid outlet, And the first through hole communicates with the bottom of the first installation groove. 10. The bionic device for multi-cusp teeth according to claim 9, characterized in that there is a gap between the second multi-cusp teeth and the side wall of the first installation groove, and the first through hole is located at the bottom of the gap .