KR101262564B1 - Measuring Device for Bite Force - Google Patents

Abstract

The present invention provides an occlusal force measuring device capable of measuring the occlusal force evenly and easily the occlusal force measurement due to the silicon of the elastic material mounted on the outside of the gauge instead of the conventional transparent strip.
In addition, the present invention provides a bite force measuring device that can be detached from the teeth through the silicone surrounding the outside of the gauge and can measure the bite force while ingesting food to facilitate the user.

Description

Occlusal force measuring device {Measuring Device for Bite Force}

The present invention relates to an occlusal force measuring device, and more particularly, to an occlusal force measuring device capable of measuring the occlusal force uniformly and making the occlusion force measurement easy and easy due to the silicon of an elastic material mounted on the outside of the gauge instead of the conventional transparent strip. It is about.

Conventionally, a device for measuring occlusal force, which is a force for engaging upper and lower teeth, is inserted into the oral cavity by decompression sheet, and the device for obtaining the occlusal force by reading the occlusal force stored in the pressure sheet and obtaining the occlusal force; BACKGROUND ART Devices are known which measure by means of an external load cell the pressure delivered by the liquid after insertion into the bite.

The occlusal force measuring device of the above-described method acquires a light irradiation unit for irradiating light to the muscles used for the occlusion of the subject, a light detector for detecting scattered and scattered light from the muscle when light is irradiated to the muscle, and oxidized saturated scattered light And an acquisition unit, a correlation data storage unit that stores correlation data with oxygen-saturated occlusal force in advance, and an occlusal force calculation unit that calculates the occlusal force.

However, the general occlusal force measuring device including the measuring device by the pressure-sensitive sheet described above has a problem that the value is remarkably different every time the bite is measured by the bite force.

In addition, since the occlusal force measuring device measures the occlusal force through the electronic plate, there is a problem that only relative measurements are possible without absolute values.

In addition, the conventional occlusal force measuring device was able to measure the occlusal force only in a medical institution or a predetermined environment, such as a public health center, hospital, etc. In particular, there was an inconvenience that the user can not measure the occlusal force while eating food.

An object of the present invention for solving the above problems is to provide an occlusal force measuring device that can measure the occlusal force evenly and easily the occlusal force measurement due to the silicone of the elastic material mounted on the outside of the gauge instead of the conventional transparent strip. It is.

In addition, an object of the present invention is to provide an occlusal force measuring device that can be attached to and detached from the teeth through the silicone surrounding the outside of the gauge and can measure the occlusal force while ingesting food.

Occlusal force measuring device according to the present invention for solving the above problems is a gauge plate 11 and the receiving portion 12, a plurality of wiring patterns 13 and a plurality of tabs are sequentially located from one side of the gauge plate 11 A gauge 10 comprising 14; A buffer part surrounding the gauge; And a measuring circuit 20 connected to the plurality of tabs 14, wherein the gauge 10 measures the occlusal force of the user input to the receiver 12, the plurality of wiring patterns 13, and the plurality of taps. It is characterized in that the transmission to the measuring circuit 20 through the tab (14).

The gauge 10 is characterized in that the gauge for reinforcing tensile strength test.

The measuring circuit 20 is characterized in that it comprises a voltage difference detection circuit 21 and a voltage stabilization circuit 22.

The voltage difference detection circuit 21 detects a difference e between the voltage V1 of the receiver 12 and the voltage V2 generated by the reference resistor RS. op3) and a plurality of resistors Ra, Rb, Rc, and Rd.

The voltage stabilization circuit 22 includes an operational amplifier op4, and the operational amplifier op4 includes the receiver so that the voltage V2 generated by the reference resistor RS is equal to the preset reference pressure voltage V. (12) and the current flowing through the reference resistor (RS) is controlled.

The gauge 10 is made of silicon.

The articulation force measuring device further includes a connection part 50 including a lead wire 51 connected to the measurement circuit 20, and the connection part 50 measures the input occlusion pressure in the measurement circuit 20. Characterized in that delivered to.

The bite force measuring device further includes an information processor 40 and a display unit 50 connected to the information processor 40, and the display unit 50 digitizes the bite force transmitted from the connection unit 50. It is characterized by displaying.

,

, 및

, E_silicon은 상기 실리콘의 탄성계수이고, 상기 전기저항에서의 상대적 변환비는, 상기 게이지(10)로부터 상기 측정회로(20)로 전송된 전기 신호이며, 상기 게이지 계수(gauge factor)는 상기 게이지(10)의 고유 상수인 것을 특징으로 한다.
The buffer member is made of silicon, and the bite force is calculated by the following formula as z-axis stress (σ _z ), which is the vertical movement direction of the tooth,

,

, And

, E _silicon is the elastic modulus of the silicon, the relative conversion ratio in the electrical resistance is an electrical signal transmitted from the gauge 10 to the measuring circuit 20, the gauge factor (gauge factor) is It is characterized by the intrinsic constant of (10).

The present invention as described above has the effect of uniformly measuring the occlusal force and easy to measure the occlusal force due to the silicon of the elastic material mounted on the outside of the gauge instead of the existing transparent strip.

In addition, the present invention can be detachable with the teeth through the silicone surrounding the outside of the gauge and can measure the occlusal force while ingesting food has the effect of promoting convenience for the user.

1 is a perspective view in one direction of the bite force measuring device according to an embodiment of the present invention,
Figure 2 is a side view in one direction of the bite force measuring device according to an embodiment of the present invention,
3 is a plan view of a gauge of an occlusal force measuring device according to an embodiment of the present invention, and
4 is a schematic diagram showing a gauge and a measuring circuit of an occlusal force measuring device according to an embodiment of the present invention; and
Figure 5 is a perspective view showing three degrees of freedom for the silicon, gauge of the occlusal force measuring device according to an embodiment of the present invention.

A preferred embodiment of the bite force measuring device 100 according to the present invention will be described with reference to FIGS. 1 to 5. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be described based on the contents throughout this specification.

Note that the term 'x-axis strain (ε _X )' in the present invention is the rate at which silicon is stretched on the x-axis due to the occlusal force according to the vertical movement of the teeth at three degrees of freedom (3DOF) throughout the specification.

In the present invention, the term 'z-axis strain (ε _Z )' is the rate at which silicon is stretched to the z-axis due to the occlusal force according to the vertical motion of the teeth at three degrees of freedom (3DOF) throughout the specification. _{Note that Z} ) is the numerical value of the occlusal force through a series of mathematical operations.

Hereinafter, referring to FIGS. 1 to 5, the bite force measuring device 100 according to an embodiment of the present invention will be described.

Occlusal force measuring device 100 according to an embodiment of the present invention is a gauge 10, the measuring circuit 20 connected to the gauge 10, the buffer unit 30 surrounding the gauge 10, the measuring circuit 20 It includes an information processing unit 40 for processing the occlusal force measured in the), the connecting unit 50 for connecting the gauge 10 and the information processing unit 40 and the display unit 60 connected to the connection.

The gauge 10 is connected to the receiver 12, the plurality of wiring patterns 13 and the plurality of tabs 14 in order from the upper side of the gauge plate 11, and serves to measure the occlusal force of the user. The gauge 10 includes a gauge plate 11, a receiver 12, a wiring pattern 13, and a tab 14.

The gauge plate 11 is formed of a plate having a predetermined thickness on a plane, and serves to support the receiver 12, the wiring pattern 13, and the tab 14 on one surface of the gauge plate 11. do.

The receiver 12 may be formed to have a predetermined pattern as shown in FIG. 2, and although not shown in the drawing of the present invention, the gauge 10 may be configured by increasing the quantity of the receiver 12. The prisoner 12 serves to initially measure the bite force by the user's teeth.

The wiring pattern 13 is positioned to be connected to the receiver 12 from one side of the receiver 12, and the wiring pattern 13 may be formed integrally, but may be the same resistor, and the wiring pattern 13 may be As shown in FIG. 3, one end of the receiver 12 is connected correspondingly. Here, the wiring pattern 13 may be formed in plural, and in FIG. 3, four wiring patterns 13 are illustrated, but the number of wiring patterns 13 is not limited.

The tab 14 is formed at one end of the wiring pattern 13 and formed to correspond to the wiring pattern 13. In the present invention, four tabs 14 are preferably formed so as to correspond to the four wiring patterns 13.

Note that the above-described receiver 12, the wiring pattern 13, and the tab 14 apply a conductor through which current can flow, and such a gauge 10 has a plurality of pressures of the user input to the receiver 12. Transmission to the gauge 10 and the measurement circuit 20 through the wiring pattern 13 and the plurality of tabs 14. The gauge 10 can measure the bite force by the upper and lower bite action of the molar teeth by placing on the molar portion of the teeth of the person to measure the bite force.

The measurement circuit 20 includes a voltage difference detection circuit 21, a voltage stabilization circuit 22, and a connection terminal 23.

The voltage difference detection circuit 21 detects the difference e between the voltage V1 generated at the receiver 12 and the voltage V2 generated at the reference resistor RS when a current flows, and as shown in FIG. 4. Operational amplifiers op1, op2 and op3 of high input impedance may be configured and resistors Ra to Rd.

The voltage stabilization circuit 22 maintains the voltage V2 generated in the reference resistor RS when the current flows at a constant value, and is composed of an operational amplifier op4 having a high pressure impedance. A reference input voltage V of a predetermined level is applied between the positive input of the operational amplifier op4 and the reference resistor RS. At this time, the operational amplifier op4 controls the current flowing in the receiver 12 and the reference resistor RS such that the voltage V2 generated in the reference resistor RS is equal to the reference pressure voltage V. FIG.

The connection terminal 23 may be located at one side of the measurement circuit 20, and as shown in FIG. 4, four connection terminals 23 may be formed to be connected to the lead wire 51 to be described later.

The buffer unit 30 is formed to surround the entire outer surface of the gauge 10 so that it can properly respond to the pressure caused by the user's teeth in the user's mouth. To this end, the shock absorbing portion 30 is preferably applied to select a cushioning elastic material, more preferably made of silicon. The buffer unit 30 or the silicone can be detachable to the teeth so that the gauge 10 can measure the occlusal force of the user's molars, the size of the gauge 10 is 2 ~ 2 of the molars as shown in FIG. It may be preferred to be between three, transversely (7 mm) x longitudinal (25 mm).

The information processing unit 40 serves to process information in which the pressure pressure measured by the gauge 10 is converted into an electrical signal by the measuring circuit 20, and the information processing unit 40 is connected to the connection unit 50 which will be described later. Connected and receive the relevant information.

The connecting portion 50 generally means a covering line capable of flowing current and voltage. One side of the connecting portion 50 is connected to the information processing portion 40, and the lead wire 51 on the other side of the connecting portion 50 is measured. Is connected to the circuit 20.

The lead wire 51 is connected to the gauge 10 and the measurement circuit 20. The lead wire 51 transmits the electric signal of the occlusal force converted through the gauge 10 and the measurement circuit 20 to the information processor 40. It serves to convey.

The display unit 60 allows the user to see the electrical signal applied to the information processing unit 40. Although not shown in FIG. 4, the display unit 60 is connected to the information processing unit 40 through a line (not shown). The electric signal is applied to display the display unit 60. At this time, the display unit 60 displays the occlusal force transmitted from the connecting unit 50 in numerical form.

As described above, the gauge 10 applied to the bite force measuring device 100 according to an embodiment of the present invention is a gauge for reinforcing tensile strength test.

Hereinafter, referring to FIG. 5, a method of quantifying the bite force of the bite force measuring device 100 according to an embodiment of the present invention by a formula will be described.

The gauge 10 has a unique gauge factor depending on the type, which is a constant value unique to the gauge 10. The information processor 40 receives the electrical signal (= the ratio of relative change in electrical resistance) from the gauge 10 and calculates the x-axis strain ε _X through Equation 1 below. do.

Since the x-axis strain ε _X calculated here represents a change in length in the x-axis direction, which is the axial direction of the gauge 10, the z-axis is obtained by using a Poisson's ratio, which is one of the physical properties of the attached silicon. Strain (ε _Z ) is calculated by the following equation (2). Here, the Poisson's ratio of general silicon is 0.4.

Since the z-axis strain (ε _Z ) calculated by Equation 2 is in the elastic range of _silicon , the stress applied to the z-axis direction (σ _Z ) using the elastic modulus of _silicon (E _silicon = 3.6GPa) is It can be calculated as Equation 3, where the z-axis stress is the occlusal force.

On the other hand, in one embodiment of the present invention due to the occlusal action of the user's molar through the connecting portion 50 and the lead wire 51 connecting between the gauge 10 and the information processing unit 40 as shown in FIG. Although the measured bite force is transmitted to the information processing unit 40, it may be applied by utilizing wireless communication except for the connection unit 50 and the lead wire 51.

For example, the receiver is mounted on the information processing unit 40 so as to receive the occlusal force measured by the gauge 10 to perform wireless communication. The wireless communication method here is infrared communication (IrDA), Bluetooth (Bluetooth), WiBro (WiBro), high speed downlink packet access (HSDPA), WiFi (WiFi), WiMAX (WIMA), Zigbee (UigB), ultra-wideband ) And the SWAP method can be applied.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the present invention can be changed.

10 gauge
11: gauge plate
12: prisoner
13: wiring pattern
14: tab
20: measuring circuit
21: voltage difference detection circuit
22: voltage stabilization circuit
23: connection terminal
30: buffer part
40: information processing unit
50: Connection
51: lead wire
60 display unit
100: bite force measuring device

Claims (9)

A gauge (10) comprising a gauge plate (11) and a receiver (12) sequentially located from one side of the gauge plate (11), a plurality of wiring patterns (13), and a plurality of tabs (14);
A buffer part 30 of silicon material surrounding the gauge; And
And a measuring circuit 20 connected with the plurality of tabs 14.
The gauge 10 transmits the occlusal force of the user input to the receiver 12 to the measurement circuit 20 through the plurality of wiring patterns 13 and the plurality of tabs 14, and
The bite force is calculated by the following formula as z-axis stress (σ _z ), which is the vertical movement direction of the tooth,

,

, And

E _silicon is the elastic modulus of the silicon,
The relative conversion ratio in the electrical resistance is an electrical signal transmitted from the gauge 10 to the measurement circuit 20,
The gauge factor (gauge factor) is characterized in that the intrinsic constant of the gauge 10,
Occlusal force measuring instrument.
The method of claim 1,
The gauge 10 is characterized in that the gauge for reinforcing tensile strength test,
Occlusal force measuring instrument.
The method of claim 2,
The measuring circuit 20 is characterized in that it comprises a voltage difference detection circuit 21 and a voltage stabilization circuit 22,
Occlusal force measuring instrument.
The method of claim 3, wherein
The voltage difference detection circuit 21 detects a difference e between the voltage V1 of the receiver 12 and the voltage V2 generated by the reference resistor RS. op3) and a plurality of resistors (Ra, Rb, Rc, Rd),
Occlusal force measuring instrument.
The method of claim 3, wherein
The voltage stabilization circuit 22 includes an operational amplifier op4,
The operational amplifier op4 controls the current flowing through the receiver 12 and the reference resistor RS such that the voltage V2 generated by the reference resistor RS is equal to the preset reference pressure voltage V. Characterized by
Occlusal force measuring instrument.
The method of claim 2,
Characterized in that the material of the gauge 10 is silicon,
Occlusal force measuring instrument.
The method of claim 1,
The bite force measuring device further includes a connection part 50 including a lead wire 51 connected to the measurement circuit 20.
The connection part 50 is characterized in that for transmitting the input pressure to the measuring circuit 20,
Occlusal force measuring instrument.
The method of claim 7, wherein
The bite force measuring device further includes an information processor 40 and a display unit 60 connected to the information processor 40.
The display unit 60 is characterized in that for displaying the z-axis stress (σ _z ) transmitted from the connecting portion 50,
Occlusal force measuring instrument. delete

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