CN219626184U - 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

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 multi-cusp teeth.

Background

The in vitro artificial oral cavity machine is mainly used for simulating the process of chewing food in the oral cavity of a human body and testing the efficiency of chewing food by teeth. At present, the bionic teeth are generally used when the external artificial oral machine chews food, and are mainly similar to human teeth. The current bionic tooth is 4 cusps, longer chewing time is needed when the bionic tooth is used for chewing food, and the cusps of the current bionic tooth are not sharp enough, so that larger chewing force is needed to chew the food.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to provide the bionic device for the teeth with multiple teeth tips, which can reduce the chewing time and improve the chewing efficiency.

In order to solve the technical problems, the utility model provides a bionic device for multi-cuspid 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.

In one embodiment of the present utility model, the dental cusps are arranged in parallel in a plurality of rows, and concave arc-shaped grooves are arranged between the dental cusps of two adjacent rows.

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

In one embodiment of the present utility model, the first multi-cuspid tooth is disposed longitudinally, and the centerlines of the grooves are on the same line.

In one embodiment of the utility model, a base is arranged on one side, far away from the first multi-cusp teeth, of the lower jaw component, the base comprises a bottom plate, a side wall is vertically arranged on the bottom plate in a surrounding mode, a chewing cavity is formed on the inner side of the side wall, a first opening is formed in the side wall, and the lower jaw component can enter the chewing cavity through the first opening.

In one embodiment of the present utility model, the jaw member is provided with a stopper, 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, and the second opening is lower than the top end of the stopper.

In one embodiment of the utility model, the side of the upper jaw member remote from the second multi-cuspid tooth is provided with a saliva injection member comprising a liquid outlet hole in communication with the upper jaw member and a liquid injection hole in communication with the liquid outlet hole.

In one embodiment of the utility model, a rib is arranged on one side of the upper jaw component, on which the second multi-cuspid teeth are mounted, a first mounting groove is arranged at the end of the rib, the first mounting groove is used for mounting the second multi-cuspid teeth, and the width of the first mounting groove is larger than that of the second multi-cuspid teeth.

In one embodiment of the utility model, a first through hole is arranged at a position of the upper jaw assembly corresponding to the liquid outlet hole, the first through hole is communicated with the liquid outlet hole, and the first through hole is communicated with the bottom of the first mounting groove.

In one embodiment of the present utility model, a gap exists between the second multi-cusp tooth and the sidewall of the first mounting groove, and the first through hole is located at the bottom of the gap.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the bionic device for the multi-cusp teeth, the first multi-cusp teeth and the second multi-cusp teeth are designed to be six cusps, compared with the bionic teeth, the number of the cusps is more, the cusps are in the shape of protruding pyramid, compared with the bionic teeth, the cusps are sharper, so that the time required for chewing food by the multi-cusp teeth is shorter, the required chewing force is smaller, and the chewing efficiency is higher; the arc grooves between two adjacent rows of dental tips and the connecting positions between two adjacent dental tips are in a concave arc shape, so that food is not easy to remain and easy to clean.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

FIG. 1 is a schematic diagram of a multi-cuspid tooth biomimetic device according to the present utility model;

FIG. 2 is a schematic view of the structure of the chin piece of FIG. 1;

FIG. 3 is a schematic view of the first multi-cuspid tooth configuration of FIG. 1;

FIG. 4 is a schematic view of the base structure of FIG. 1;

FIG. 5 is a schematic top view of the upper jaw member of FIG. 1;

FIG. 6 is a schematic view of the lower construction of the upper jaw member of FIG. 1;

FIG. 7 is a schematic view of the saliva injecting member of FIG. 1;

FIG. 8 is a cumulative particle size distribution plot of a chewing rice experiment;

FIG. 9 is a cumulative particle size distribution plot of a chewing peanut experiment;

fig. 10 is a cumulative particle size distribution plot of a chew carrot experiment.

Description of the specification reference numerals: 1. a base; 2. a chin member; 3. a jaw member; 4. a saliva injection member; 5. a first multi-cuspid tooth; 6. a second multi-cuspid tooth; 11. a bottom plate; 12. a sidewall; 13. a first opening; 14. a second opening; 15. a discharge port; 16. a feed inlet; 21. an inclined surface; 22. a stop block; 31. a first through hole; 32. a convex rib; 33. a first mounting groove; 41. a liquid injection hole; 42. a liquid outlet hole; 51. dental cusps; 52. a groove.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Referring to fig. 1, a bionic device for multi-cuspid teeth according to the present utility model includes: a lower jaw member 2, wherein a first multi-cusp tooth 5 is arranged on one side of the lower jaw member 2, at least 5 cusps 51 are arranged on the chewing side of the first multi-cusp tooth 5, and the cusps 51 are in a prismatic table shape; the upper jaw member 3, the upper jaw member 3 can be lifted, and a second multi-cusp tooth 6 is provided on a side of the upper jaw member 3 close to the lower jaw member 2, and the second multi-cusp tooth 6 corresponds to the first multi-cusp tooth 5 in position.

According to the bionic device for the multi-cuspid teeth, the second multi-cuspid teeth 6 are lifted and lowered through lifting and lowering of the upper jaw member 3, so that a chewing process is simulated. Because the chewing side of the first multi-cusp tooth 5 is provided with at least 5 cusps 51, and more than 4 cusps of the bionic tooth, the time required for chewing the multi-cusp tooth is shorter, the cusps 51 are in a prismatic table shape, and compared with the cusp shape of the bionic tooth, the required chewing force is smaller, and the chewing efficiency is higher.

Referring to fig. 2, the entire chin member 2 has a plate shape. Two rows of second mounting grooves are longitudinally and parallelly arranged on the upper side of the lower jaw member 2, threaded holes are formed in the bottoms of the second mounting grooves, and the first multi-cusp teeth 5 are fixed in the second mounting grooves through screws. In one embodiment, the first multi-cuspid tooth 5 may also be secured to the second mounting groove by glue. The upper side edge position of the first jaw member 2 is also symmetrically provided with a stopper 22. The lower jaw member 2 has an inclined surface 21 extending outward from a side perpendicular to the bottom plate 11 and approaching the stopper 22, so that the lower surface of the lower jaw member 2 has a longer length than the upper surface.

Referring to fig. 3, 6 cusps 51 are provided on the chewing side of the first multi-cusp tooth 5, and the cusps 51 are in a pyramid shape protruding upward, and an included angle between an outer side surface of the pyramid and a bottom surface is larger, so that the pyramid cusps 51 are sharper than the bionic cusps. The chewing side of the single first multi-cusp tooth 5 is provided with two rows of cusps 51 in parallel, and a total of 3 cusps 51 are provided in a single row. A concave arc-shaped groove 52 is arranged between two adjacent rows of dental tips 51, the connecting position between two adjacent dental tips 51 in a single row is concave arc-shaped, and the arc-shaped groove 52 and the connecting position are not easy to remain food residues and are easy to clean. The single-row second mounting grooves are longitudinally arranged, so that the first multi-cusp teeth 5 are longitudinally arranged, the cusps 51 are longitudinally arranged in two rows, and the center lines of the grooves 52 are positioned on the same longitudinal straight line.

Referring to fig. 4, the base 1 includes a bottom plate 11 and a sidewall 12 vertically surrounding and fixed to the bottom plate 11. A plurality of countersunk holes are arranged at two sides of the upper surface of the bottom plate 11 and are used for fixing the bottom plate 11 with the outside. A plurality of countersunk holes are arranged in the middle of the lower surface of the bottom plate 11 and are used for fixing the bottom plate 11 and the jaw member 2. The bottom of the lower jaw member 2 is provided with a plurality of screw holes, so that the installation position of the lower jaw member 2 can be adjusted. The side walls 12 include side walls 12 in 4 directions of front, rear, left and right, and the inside of the side walls 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 jaw member 2, and the height of the first opening 13 is higher than the top end of the stop block 22, so that the jaw member 2 can completely enter the chewing cavity from the first opening 13. The side wall 12 opposite to the first opening 13 is provided with a second opening 14, and the second opening 14 is lower than the top end of the stop block 22 but higher than the thickness of the lower jaw member 2, so that the opposite side of the stop block 22 on the lower jaw member 2 can extend out of the side wall 12 from the second opening 14. The side walls 12 on the front side and the rear side are respectively provided with a discharge hole 15 and a feed hole 16, the discharge hole 15 is communicated with the first opening 13, and the feed hole 16 is communicated with the second opening 14. Before the start of the experiment, food may be placed into the chew from the inlet 16 and after the end of the experiment, the food particles may be cleaned out of the chew from the outlet 15 and slid down through the inclined surface 21. In one embodiment, circular mounting holes are further formed in the side walls 12 on the left side and the right side, an air cylinder is arranged at the outer side of the base 1 and corresponds to the positions of the mounting holes, a telescopic rod of the air cylinder stretches into the chewing cavity through the mounting holes, a baffle is arranged at the end of the telescopic rod, and the baffle can move in the chewing cavity. The motor can be arranged outside the mounting hole, the output end of the motor is connected with a lead screw, a movable nut on the lead screw is connected with a connecting rod extending towards the direction of the chewing cavity, and the connecting rod penetrates through the mounting hole and is connected with the baffle plate in the chewing cavity, so that the baffle plate can also move in the chewing cavity. When the chewing experiment is carried out, the baffle can push food to the tooth side, and the movement of the human tongue is simulated. The stopper 22 prevents the chin piece 2 from accidentally falling off the opposite side during installation, and prevents the chin piece 2 from being installed in a wrong direction. The second opening 14 is provided to allow the jaw member 2 to be flexibly adjusted in mounting position, in which the jaw member 2 is mounted on the base plate 11 at different positions when different teeth are mounted on the jaw member 2. The inclined surface 21 of the lower jaw member 2 is arranged to leave a gap between the lower jaw member 2 and the inner wall of the upper side of the first opening 13, thereby facilitating the removal of the lower jaw member 2.

As shown in fig. 5 and 6, protrusions are provided at left and right edge positions of the upper side of the upper jaw member 3, and the protrusions are fixed to the saliva injection member 4 to prevent the saliva injection member 4 from shaking when the saliva injection member 4 is mounted. A counter-sunk hole is arranged at the position opposite to the inner side of the bulge, and is used for fixing the second multi-cusp teeth 6. A first through hole 31 is provided at a position opposite to the inner side of the projection, and the first through hole 31 penetrates the upper jaw member 3 longitudinally. A threaded through hole is provided at a position opposite to the inner side of the first through hole 31 for connecting the palate member 3 with the saliva injecting member 4. The left and right edge positions of the lower side of the upper jaw member 3 are provided with ribs 32, the lower side of the ribs 32 is provided with a first mounting groove 33, the width of the first mounting groove 33 is larger than that of the second multi-cusp teeth 6, the bottom of the first mounting groove 33 is communicated with the countersunk holes on the upper side of the upper jaw member 3, and the second multi-cusp teeth 6 are mounted in the first mounting groove 33 through screws. The first through hole 31 communicates with a side of the bottom of the first mounting groove 33 near the central axis of the upper jaw member 3, and the second multi-cusp teeth 6 are mounted on the first mounting groove 33 near the outer side of the upper jaw member 3, so that a gap exists between the second multi-cusp teeth 6 and the side wall 12 of the first mounting groove 33, and the first through hole 31 communicates with the outside through the gap. The structure of the second multi-cuspid tooth 6 corresponds to the mounting position of the first multi-cuspid tooth 5, and the structure is the same as the first multi-cuspid tooth 5, and will not be described again.

Referring to fig. 7, the saliva injecting member 4 is provided at a lower side edge thereof with a plurality of fluid outlet holes 42, and the first through holes 31 are positioned to correspond to the fluid outlet holes 42 such that the fluid outlet holes 42 communicate with the first through holes 31. A screw hole is provided in the middle of the lower side of the saliva injecting member 4, and the screw hole is screwed with the screw through hole of the upper jaw member 3. The side wall 12 of the saliva injection member 4 is provided with a liquid injection hole 41, and the liquid injection hole 41 is communicated with a liquid outlet hole 42. Saliva is injected into the liquid injection hole 41 from the outside through the pipe, 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 mounting groove 33. The saliva injection component 4 upside is equipped with elevating gear, elevating gear adopts motor and lead screw cooperation to be connected, and the connecting plate that stretches out downwards is installed to the adjustable nut cooperation of lead screw, and the connecting plate bottom is connected with saliva injection component 4, and the motor drives adjustable nut and removes to make saliva injection component 4 can reciprocate.

When in use, the first multi-cusp teeth 5 are firstly installed in the second installation grooves of the lower jaw member 2, and the second multi-cusp teeth 6 are installed in the first installation grooves 33 of the upper ribs 32 of the upper jaw member 3; then the lower jaw component 2 is arranged on the bottom plate 11, the upper jaw component 3 is arranged on the lower side of the saliva injection component 4, and the position of the lower jaw component 2 is adjusted to enable the first multi-cuspid tooth 5 to correspond to the position of the second multi-cuspid tooth 6; then, food is put into the chewing cavity, the saliva injecting member 4 and the upper jaw member 3 are lifted together to bit the food, meanwhile, saliva is injected into the liquid injecting hole 41 through the pipeline outside and flows out from the gap between the second multi-cuspid teeth 6 and the side wall 12 of the first mounting groove 33 through the liquid outlet hole 42 and the first through hole 31, and the saliva is mixed with the food; during chewing, the food is pushed to move to two sides by the baffle plate, so that the chewing is more sufficient.

The simulated teeth are used for carrying out chewing experiments on rice, peanut and carrot, and control experiments are carried out by using simulated teeth.

The food is processed by the following modes:

rice: according to the ratio of water to rice being 1.5:1, the rice is boiled for 30 minutes, and 10g is taken for each experiment.

Peanut: the peanuts are treated by a microwave oven for 3 minutes with high fire, and then the red skin of the peanuts is removed, and 6g of the peanuts are taken in each experiment.

Carrot: fresh carrots were cut into 1 cc dices and 6g were taken per experiment.

Setting of saliva outflow rate:

saliva outflow rate was set to 1.85 mL/min in chewing rice experiments.

Saliva amount was set at 1.13 mL/min in chewing peanut experiments.

Saliva amount was set at 0.2 mL/min in the chewing carrot experiment.

Setting extrusion times:

the number of times of pressing the rice was set to 16.

The number of times of extrusion of the peanuts was set to 44.

The number of pressing times of carrots was set to 30.

The masticatory force was set to 500N and 250N according to the young and old.

After the chewing experiment is finished, carrying out wet screening on food particles collected after chewing, classifying the food particle diameter d into 4 types after screening, wherein the food particle diameter d is larger than 5mm, the food particle diameter d is smaller than 5mm and larger than 2mm, the food particle diameter d is smaller than 2mm and larger than 1mm, the food particle diameter d is smaller than 1mm, putting the separated samples into a weighing bottle, drying at 105 ℃ in an oven, measuring the dry weight, and finally calculating the ratio of the food particle diameter d to the food particle diameter d which is larger than 5mm and smaller than 1mm, wherein the food particle diameter d is smaller than 5mm and is called as large particle diameter, and the food particle diameter d which is smaller than 1mm and is called as small particle diameter. Three replicates were performed for each type of tooth and the average was taken.

The experimental results of the chewing rice of the bionic teeth and the multi-cuspid teeth are shown in the following table in fig. 8:

particle size ratio difference table of simulated teeth and multi-cusp teeth chewing rice experiments:

	small particle size ratio	Large particle size ratio
			Bionic tooth-250N	48.74％	8.57％
Bionic tooth-500N	54.11％	6.94％
			Multi-cuspid tooth-250N	55.12％	4.29％
Multi-cuspid tooth-500N	59.80％	3.36％

As can be seen from the above, the small particle size ratio of the multi-cuspid teeth is higher than that of the bionic teeth and the large particle size ratio of the multi-cuspid teeth is lower than that of the bionic teeth under the same parameters, so that the chewing efficiency of the multi-cuspid teeth is higher than that of the bionic teeth.

The results of the simulated teeth and multi-cuspid teeth chewing peanuts are shown in fig. 9 and the following table:

particle size ratio difference table of simulated teeth and multi-cusp teeth chewing peanut experiments:

	small particle size ratio	Large particle size ratio
			Bionic tooth-250N	45.97％	6.28％
Bionic tooth-500N	53.66％	2.24％
			Multi-cuspid tooth-250N	56.90％	0％
Multi-cuspid tooth-500N	61.62％	0％

As can be seen from the above, the small particle size ratio of the multi-cuspid teeth is higher than that of the bionic teeth and the large particle size ratio of the multi-cuspid teeth is lower than that of the bionic teeth under the same parameters, so that the chewing efficiency of the multi-cuspid teeth is higher than that of the bionic teeth.

The experimental results of the simulated teeth and the multi-cusp teeth chewing carrots are shown in fig. 10 and the following table:

particle size ratio difference table of bionic tooth and multi-cusp tooth chewing carrot experiments:

as can be seen from the above, the small particle size ratio of the multi-cuspid teeth is higher than that of the bionic teeth and the large particle size ratio of the multi-cuspid teeth is lower than that of the bionic teeth under the same parameters, so that the chewing efficiency of the multi-cuspid teeth is higher than that of the bionic teeth.

The experimental results show that the chewing efficiency of the multi-cusp teeth is generally higher than that of the bionic teeth.

According to the bionic device for the multi-cusp teeth, the first multi-cusp teeth 5 and the second multi-cusp teeth 6 are designed to be six cusps 51, compared with the bionic cusps, the number of the cusps is more, the cusps 51 are in the shape of protruding pyramid, compared with the bionic cusps, the cusps are sharper, so that the time required for chewing food by the multi-cusp teeth is shorter, the required chewing force is smaller, and the chewing efficiency is higher; the arc grooves 52 between two adjacent rows of dental tips 51 and the connecting positions between two adjacent dental tips 51 are in a concave arc shape, so that food is not easy to remain and easy to clean; by providing the saliva injection member 44, the chew intracavity environment is brought closer to the human chew environment; the chewing efficiency of the multi-cuspid teeth is higher than that of the bionic teeth through the control experiment of the multi-cuspid teeth and the bionic teeth.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (10)

1. A multi-cuspid tooth biomimetic device, 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.

2. The multi-cuspid tooth biomimetic device according to claim 1, wherein: the tooth cusps are arranged in parallel, and concave arc-shaped grooves are arranged between every two adjacent tooth cusps.

3. The multi-cuspid tooth biomimetic device according to claim 2, wherein: the single row is provided with a plurality of dental cusps, and the connection positions between the adjacent dental cusps are in a concave arc shape.

4. The multi-cuspid tooth biomimetic device according to claim 2, wherein: the first multi-cusp teeth are longitudinally arranged, and the center lines of the grooves are positioned on the same straight line.

5. The multi-cuspid tooth biomimetic device according to claim 1, wherein: the utility model discloses a tooth, including the lower jaw component, the lower jaw component is equipped with the base in one side of keeping away from first many cusps tooth, the base includes the bottom plate, the perpendicular surrounding is equipped with the lateral wall on the bottom plate, the lateral wall inboard forms the chewing chamber, be equipped with first opening on the lateral wall, the lower jaw component can get into the chewing intracavity by first opening.

6. The multi-cuspid tooth biomimetic device according to claim 5, wherein: the jaw component is provided with a stop block, the first opening is higher than the top end of the stop block, the side wall of the opposite side of the first opening is provided with a second opening, and the second opening is lower than the top end of the stop block.

7. The multi-cuspid tooth biomimetic device according to claim 1, wherein: the side of the upper jaw component far away from the second multi-cusp teeth is provided with a saliva injection component, and the saliva injection component comprises a liquid outlet hole communicated with the upper jaw component and a liquid injection hole communicated with the liquid outlet hole.

8. The multi-cuspid tooth biomimetic device according to claim 7, wherein: the upper jaw component is installed one side of the many cusps of second is equipped with the fin, the fin tip is equipped with first mounting groove, first mounting groove is used for installing many cusps of second tooth, just first mounting groove width is greater than many cusps of second tooth width.

9. The multi-cuspid tooth biomimetic device according to claim 8, wherein: the upper jaw component is provided with a first through hole corresponding to the liquid outlet hole, the first through hole is communicated with the liquid outlet hole, and the first through hole is communicated with the bottom of the first mounting groove.

10. The multi-cuspid tooth biomimetic device according to claim 9, wherein: a gap exists between the second multi-cusp teeth and the side wall of the first mounting groove, and the first through hole is positioned at the bottom of the gap.