KR20180043608A - Dental centrifugal separator and control method thereof - Google Patents

Abstract

Disclosed are a dental centrifugal separator and a control method thereof. According to an embodiment of the present invention, the dental centrifugal separator includes: a housing dividing an inner space and having an open upper part; a cover combined with the upper part of the housing to be rotatable, and selectively opening or closing the inner space; a motor placed in the inner space; a power supply part supplying power to the motor; a control part controlling the motor; a rotor connected with a motor shaft of the motor to be rotated depending on the operation of the motor, and storing a tube having a specimen; and a sensor part measuring at least one among vibration and temperature of the inner space. The control part is able to reduce the speed of the motor when at least one among the vibration and temperature of the inner space exceeds a preset value.

Description

TECHNICAL FIELD [0001] The present invention relates to a dental centrifuge and a method of controlling the same. [0002] DENTAL CENTRIFUGAL SEPARATOR AND CONTROL METHOD THEREOF [

The following description relates to a dental centrifuge and its control method.

Platelets are one of the blood constituents of the blood, mainly involved in the coagulation or hemostasis of blood. In addition to these hemostatic functions, platelets secrete a variety of cytokines to entice cells necessary for tissue healing, promote growth and regeneration by directly activating related cells by secretion of growth factors .

Attempts have been made to extract and utilize PRP (Platelet Rich Plasma) from the blood to utilize the tissue healing and regenerating functions of the platelets described above. PRP is called platelet-rich plasma or high-density platelet plasma, induces osteogenesis, and can play a role as a space maintainer due to close particles. PRP is extracted from the patient's blood and then injected into the patient to induce natural tissue healing and regeneration. This method can be used in various medical fields such as skin regeneration, wound healing, cell proliferation promotion, collagen production, .

On the other hand, the demand for implants is greatly increasing due to various factors such as entry into the aging society and improvement of income level. In fact, the domestic and overseas dental implant market is continuously growing. PRP can be used to treat these dental implants. Specifically, implant treatment with PRP provides a better environment for soft tissue regeneration, which is advantageous in that the implants can be implanted even in areas with severe inflammation. In addition, it is effective in the regeneration of bone and gums, which can prevent secondary infection, reduce bone grafting, and shorten treatment period.

PRP extracts blood by centrifugation method. Since dentist centrifuge is not yet available, PRP is extracted from dentistry using general medical centrifuge. However, in the dentistry, there is not enough professional manpower to operate the general medical centrifuge. In general, the medical centrifuge has a lot of unnecessary functions in the treatment of the implant, and its structure is complicated and huge, and its utilization in the dentistry is low.

Therefore, it is necessary to develop a dental centrifuge that can effectively extract PRP but is suitable for dental implant treatment.

Japanese Patent Application Laid-Open No. 10-1991-0021579

The embodiments described herein are intended to provide a compact, inexpensive and easy to use dental centrifuge and its control method.

Further, the present invention is to provide a dental centrifuge and its control method capable of improving PRP extraction amount.

The present invention also provides a dental centrifuge having improved stability against overvoltage and overheating, and a control method thereof.

The present invention also provides a dental centrifuge having reduced noise and vibration and a control method thereof.

A dental centrifuge according to one embodiment includes a housing defining an inner space and having an open top; A cover rotatably coupled to the upper side of the housing and selectively opening and closing the inner space; A motor disposed in the internal space; A power supply unit for supplying power to the motor; A controller for controlling the motor; A rotor connected to the motor shaft of the motor and rotated according to the operation of the motor and having a tube containing the sample; And a sensor unit for measuring at least one of vibration and temperature of the internal space, and the control unit may control the deceleration of the motor when at least one of the vibration and the temperature of the internal space exceeds a predetermined value.

The sensor unit may include at least one of a vibration sensor for measuring the vibration of the inner space and a temperature sensor for measuring the temperature of the inner space.

The vibration sensor and the temperature sensor may be disposed at a central portion of the inner space.

The controller may further include a switch for electrically connecting the power source to the motor only when the cover is closed.

In addition, the switch includes a main body in which both ends of the switch are connected to the power supply unit and the motor, respectively; A pressing piece which is pressed by the one end of the cover between closing operations of the cover; And an on / off button which is pressed by the pressing piece to electrically activate the circuit between the operation in which the pressing piece is pressed by the one end of the cover.

A first plate spaced upwardly from a bottom surface of the housing; And a second plate spaced upwardly from the first plate, wherein the motor is disposed between the first plate and the second plate, the rotor is disposed on the second plate, And the second plate can be vertically penetrated.

A flange surrounding the outer circumferential surface of the motor; An elastic material grommet provided on one side of the motor; A first vibration-proof shaft having one end engaged with the flange and the other end fixed to the grommet; And a second vibration-proof shaft, one end of which is fastened to the first plate and the other end of which is fixed to the grommet.

The first vibration-proof shaft and the second vibration-proof shaft both extend vertically and are vertically spaced from each other. The grommet is disposed between the first vibration-shield shaft and the second vibration-shield shaft at a position laterally spaced from the motor Can be intervened.

A first plate spaced upward from a bottom surface of the housing in which the inflow hole is formed and having a first through hole; And a second plate spaced upward from the first plate and having a second through-hole formed therein, wherein the cover has a discharge hole formed therein, and between the rotations of the rotor, the outside air flows into the internal space through the inflow hole And may be discharged to the outside through the first through-hole, the second through-hole, and the discharge hole.

A method of controlling a dental centrifuge according to an embodiment includes: placing a tube containing a sample on a rotor; Inputting at least one of a rotation speed and a rotation time of the rotor; Closing the cover; Inputting a start command relating to the rotation of the rotor; And sensing at least one of over vibration and overheating of the centrifuge; And reducing the rotational speed of the rotor when at least one of the overvoltage and the overheating of the centrifuge is sensed.

The sensing of at least one of the overvoltage and the overheating of the centrifugal separator may include sensing a vibration of the internal space using a motor in the internal space of the centrifugal separator or a vibration sensor and a temperature sensor disposed around the rotor, And measuring a temperature; And determining whether the vibration and the temperature exceed a predetermined value.

The method may further include a step of electrically connecting a motor for rotating the rotor and a power source for supplying power to the motor by closing the cover.

The method may further include opening the cover when at least one of the overvoltage and the overheating of the centrifuge is sensed.

According to the embodiments described herein, it is possible to provide a small-sized, inexpensive and easy-to-use dental centrifuge and its control method.

Further, it is possible to provide a dental centrifuge and its control method capable of improving the extraction amount of PRP.

In addition, it is possible to provide a dental centrifuge having improved stability against overvoltage and overheating and a control method thereof.

In addition, a dental centrifuge having reduced noise and vibration and a control method thereof can be provided.

1 is a schematic side cross-sectional view of a dental centrifuge according to one embodiment.
Fig. 2 is a perspective view of the rotor of the dental centrifuge of Fig. 1;
Figure 3 is a block diagram of the control system of the dental centrifuge of Figure 1;
4 is an enlarged view of a portion A in Fig.
5 is a flowchart of a dental centrifuge control method according to an embodiment.

Hereinafter, specific embodiments will be described in detail with reference to the accompanying drawings. In addition, if it is determined that a detailed description of a related known configuration or a known function can obscure the gist of the embodiments, a detailed description thereof will be omitted.

On the other hand, the singular expressions include plural expressions unless the context clearly indicates singular value. And, when a particular section is referred to as "comprising ", it means that the particular section may include other configurations other than the specific configuration, as long as there is no specially contradictory description.

1 is a schematic side cross-sectional view of a dental centrifuge 100 (hereinafter referred to as "centrifuge") according to an embodiment, and FIG. 2 is a perspective view of a rotor 130 of a centrifuge 100. For clarity and convenience, some of the configurations of the support 10, the rotor 130, and the like in FIG. Hereinafter, the centrifugal separator 100 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG.

The centrifuge 100 may include a housing 110. The housing 100 may form an outer wall of the centrifugal separator 100 and may divide an inner space of the centrifugal separator 100 so that the inner space of the centrifugal separator 100 may include the following components such as a rotor 130 and a motor 140. The housing 110 may include sidewalls and a bottom surface 111 as shown, and the top side may be open. A support member 10 may be provided under the housing 110.

The overall dimensions of the housing 110 may be less than 280 mm x 320 mm x 240 mm and less than 5 kg in weight and may be of a size and weight suitable for use in dentistry.

An inflow hole 114 may be formed in the bottom surface 111 of the housing 110. The outside air outside the centrifugal separator 100 may be introduced into the inner space of the centrifugal separator 100 through the inflow hole 114. This will be described later.

A first plate 112 and a second plate 113 may be provided in the inner space of the housing 110. The first plate 112 may be provided at a position spaced a predetermined distance from the bottom surface 111 of the housing 110 and the end thereof may be engaged with the inner wall of the housing 110. The second plate 113 may be provided at a position spaced apart from the first plate 112 by a predetermined distance, and the end of the second plate 113 may be engaged with the inner wall of the housing 110. The inner space of the housing 110 is divided into a first space 117 from the bottom surface 111 to the first plate 112 in the vertical direction and a second space 117 extending from the first plate 112 to the second plate 113. [ 2 space 118. In this case, The second plate 113 may define a third space 119 between the second plate 113 and the cover 120 in relation to the cover 120 to be described later.

A first through hole 115 may be formed in the first plate 112 and a second through hole 116 may be formed in the second plate 113. The first through holes 115 and the second through holes 116 may be related to the flow of the ambient air mentioned above inside the housing 110. In addition, when the first through hole 115 is formed at the center of the first plate 112, a part of the lower end of the motor 140 may pass through the first through hole 115. Likewise, when the second through hole 116 is formed at the center of the second plate 113, the motor shaft 145 can penetrate through the second through hole 116.

The cover 120 may be rotatably coupled to the upper side of the housing 110. In this embodiment, the cover 120 is hinged 125 to the housing 110 as an example. The cover 120 can selectively open and close the inner space of the housing 110. For example, when the tube containing the sample such as blood is inserted into the centrifuge 100 or removed from the centrifuge 100, The inner space of the housing 110 can be opened and the cover 120 can close the inner space of the housing 110 between the operations of the centrifuge 100. [ The cover 120 may be formed of a transparent material so that the user can visually confirm the inner space of the housing 110.

Meanwhile, in the centrifugal separator 100 according to the present embodiment, power can be supplied to the motor 140 only when the cover 120 is closed, which will be described later. A discharge hole 127 may be formed on one side of the cover 120 in connection with discharge of the outside air flowing into the inside space of the housing 110, which will be described in detail later.

The rotor 130 may be disposed in a third space 119 which is a space defined between the inner space of the housing 110, for example, between the second plate 113 and the cover 120, And may be connected to the motor shaft 145 and rotated according to the operation of the motor 140. In addition, the rotor 130 may be provided with an insertion groove 135 in which a tube containing a sample such as blood is placed. The tube containing the sample is placed in the catch groove 135 and centrifugal separation of the sample may occur as the rotor 130 rotates.

The motor 140 may be exemplified by a BLDC motor and may include a second space 118 that is a space defined between the first plate 112 and the second plate 113 in the interior space of the housing 110 1, a portion of the lower end of the motor 140 may be separated from the first space 112, which is a space defined between the bottom surface 111 of the housing 110 and the first plate 112 117). In this case, a part of the lower end of the motor 140 may pass through the first through hole 115 formed in the first plate 112.

The motor shaft 145 penetrates the second plate 113 up and down and both ends of the motor shaft 145 can be connected to the motor 140 and the rotor 130, respectively. The motor shaft 145 rotates in accordance with the operation of the motor 140 and the rotor 130 also rotates in accordance with the rotation of the motor shaft 145. 1, when the second through hole 116 is formed at the center of the second plate 113, the motor shaft 145 may pass through the second through hole 116 vertically.

Meanwhile, the centrifugal separator 100 according to the present embodiment may include the dust-proof structure 150 of the motor 140. For example, the anti-vibration structure 150 may include a flange 151, a grommet 157, dust-proof shafts 153 and 154, and the like.

The flange 151 may cover the outer circumferential surface of the motor 140. The first vibration-absorbing shaft 153 can be coupled to the flange 151 vertically. 1, the first dustproof shaft 153 extends vertically and can be fastened to the flange 151 by fastening members 158 such as bolts passing through the flange 151 up and down.

The second vibration-proof shaft 154 can be vertically fastened to the first plate 112. As shown in FIG. 1, the second vibration-proof shaft 154 extends vertically and is connected to the first plate 112 by fastening members 159 such as bolts passing through the first plate 112 up and down .

The grommet 157 may be interposed between the first vibration-absorbing shaft 153 and the second vibration-absorbing shaft 154, which are spaced apart from each other by a predetermined distance from the motor 140, One end portion of the grommets 153, 154 may be fixed to the grommet 157. For example, grooves having a predetermined depth may be formed on and under the grommet 157, and one end of each of the shafts 153 and 154 may be inserted into the groove. The grommet 157 can effectively suppress the vibration generated by the operation of the bar motor 140 formed of an elastic material such as rubber and thus the noise can also be reduced.

In addition, the centrifugal separator 100 according to the present embodiment may be equipped with an air cooling type cooling system. For example, an inlet hole 114 may be formed in the bottom surface 111 of the housing 110, a first through hole 115 may be formed in the first plate 112, The second through hole 116 may be formed. As the rotor 130 rotates, the outside air outside the centrifugal separator 100 can be introduced into the inner space of the housing 110 through the inflow hole 114, and then the first through holes 115 and the second through holes 116). ≪ / RTI > The outside air reaching the third space 119 can be discharged to the outside of the centrifuge 100 through the discharge hole 127 formed at one side of the cover 120. Thus, the heat generated between the operation of the motor 140 and the rotor 130 can be effectively discharged to the outside. For the sake of more effective cooling, the inlet hole 114, the first through hole 115, the second through hole 116, and the exhaust hole 127 may be provided in two or more, respectively.

3 is a block diagram of a control system of the centrifugal separator 100 according to the present embodiment. A memory 160, a control unit 170, a power supply unit 180, and a switch 190, in addition to the motor 140 described above.

The sensor unit 150 may measure at least one of the vibration and the temperature of the internal space of the housing 110. At least one of the vibration sensor and the temperature sensor is disposed in the inner space of the housing 110, for example, in the center of the centrifuge 100, that is, in the periphery of the rotor 130 or the motor 140, Can be provided. Hereinafter, the vibration sensor and the temperature sensor are both provided for convenience, so that the sensor unit 150 measures both the vibration and the temperature of the internal space of the housing 110. The sensor unit 150 may transmit the measured vibration and temperature to the control unit 170. [

The memory 160 may store a specific vibration value as a reference for over vibration and a specific temperature value as a reference for overheating. The memory 160 may provide the control unit 170 with information about the reference value. The control unit 170 may compare the reference value and the vibration and temperature of the internal space of the housing 110 received from the sensor unit 150 to determine whether overvoltage or overheating occurs. If it is determined that excessive vibration or overheating has occurred, the control unit 170 may decelerate the rotation speed of the motor 140 and may stop the operation of the motor 140 in some cases.

The power supply unit 180 is electrically connected to the motor 140 to supply power to the motor 140. A switch 190 is interposed between the motor 140 and the power supply unit 180 to connect the motor 140 and the power supply unit 180 ) Can be selectively electrically connected. In this embodiment, for safety of the user, the switch 190 can connect the motor 140 and the power supply unit 180 only when the cover 120 is closed. The operation of the motor 140 can be stopped if the cover 120 is opened and the switch 190 electrically short-circuits the motor 140 and the power supply unit 180 . Hereinafter, this will be described in detail with reference to FIG. 4, which is an enlarged view of a portion A in FIG.

The switch 190 may be provided in the interior space of the housing 110 and may include a body 191, an on-off butt 192 and a push piece 193. The main body 191 may have a circuit in which both ends thereof are connected to the motor 140 and the power supply unit 180, respectively. 4, when one end of the cover 120 presses down the pressing piece 193, which is exemplified as an elastic material, between the closing operation of the cover 120, the pressing piece 193 is moved to the on- The button 192 can be pressed successively. The on / off button 192 can provide the electrical contact of the circuit by moving down a predetermined distance as it is being pressed by the pressing piece 193, so that the circuit can be electrically activated. The motor 140 and the power supply unit 180 can be electrically connected to each other by the electrical activation of the circuit and the motor 140 can receive power from the power supply unit 180. [

Conversely, when the cover 120 is opened, the pressing force of the cover 120 against the pressing piece 193 is lost, and the pressing force of the pressing piece 193 on the on / off button 192 is lost successively, The on-off button 192 returns to the home position, and the circuit can again become inactive. In this case, since the motor 140 and the power supply unit 180 are electrically short-circuited, the motor 140 can not receive power and can be stopped.

5 is a flowchart of a centrifugal separator control method according to an embodiment. Hereinafter, a centrifugal separator control method according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG.

First, in a state in which the cover 120 is opened, a tube containing a sample such as blood can be placed in the tube positioning groove 135 of the rotor 130 (S10).

Next, at least one of the rotation speed (RPM) and the rotation time of the rotor 130 may be input through an input unit (not shown) provided outside the housing 110 and interlocked with the control unit 170 (S20). For convenience, here, it is exemplified that both rotational speed and rotational time are input. For reference, the input unit can be variously implemented by known means such as a button type, a dial type, a touch screen type, or the like.

When the setting operation for the operation of the centrifuge 100 is completed, the cover 120 can be closed (S30). At this time, the power supply unit 180 and the motor 140 are electrically connected by the switch 190 during the closing operation of the cover 120 as described above. In the above description, the cover 120 is closed after the input of the rotational speed and the rotational time, but conversely, the rotational speed and the rotational time after the closing of the cover 120 may be input (that is, The order of steps S30 and S30 may be reversed).

Since the preparations for centrifugation of the sample are completed through the above process, the start command regarding the rotation of the rotor 130 can be input through the input unit (S40).

When the start command is input, the motor 140 starts to operate, and the rotor 130 may start to rotate accordingly. The rotor 130 may be accelerated until it reaches the set rotational speed in step S20 (S50).

At least one of over vibration and overheating of the centrifugal separator 100 may be detected during the acceleration of the rotor 130 (S60). Here, it is described that it detects both vibration and overheating. Vibration and overheating can be detected by the cooperation of the sensor unit 150, the memory 160 and the control unit 170, as described above. In other words, the sensor unit 150 transmits the vibration and temperature measurement values of the centrifugal separator 100 to the control unit 170 using the vibration sensor and the temperature sensor. The control unit 170 stores the measured values in the memory 160, It is possible to determine whether overheating or overvoltage has occurred by comparing the reference value with the reference value relating to the overheating and overvoltage received from the overheat and overvoltage.

If overvoltage and overheating have not occurred, the rotor 130 may operate as previously set (S70). The controller 170 can reduce the rotational speed of the rotor 130 and further stop the rotor 130 by controlling the motor 140 to be decelerated if at least one of the vibration and the overheating occurs (S80).

In addition to the deceleration control of the motor 140 by the control unit 170, it may further be considered to cut off the power supplied to the motor 140 more aggressively. For example, when overvoltage or overheat is detected, the controller 170 releases the cover 120 from the closed state, that is, opens the cover 120 so that the motor 140 and the power supply unit 180 are electrically short-circuited The motor 140 can be prevented from receiving further power. The process of cutting off the power supply to the motor 140 by opening the cover 120 is as described above.

In the meantime, although it has been described that overvoltage and overheat are detected in the process of accelerating the rotor 130 from above, it is also possible to continuously detect overvoltage and overheat even after the rotor 130 reaches the target rotational speed .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments, There may be various changes, modifications or substitutions in the drawings. For example, the configurations or features described together in the specific embodiments may be implemented in a distributed manner, and the configurations or features described in each of the different embodiments may be implemented in a combined manner. Likewise, the configurations or features described in each claim can also be implemented in a dispersed manner or in combination. And all such embodiments are to be regarded as falling within the scope of the present invention.

100: dental centrifuge 110: housing
111: bottom surface 112: first plate
113: second plate 114: inflow hole
115: first through hole 116: second through hole
120: Cover 127: Exhaust hole
130: rotor 135: tube seat groove
140: motor 145: motor shaft
150: sensor unit 160: memory
170: control unit 180:
190: switch 191:
192: ON / OFF button 193:

Claims (13)

A housing defining an inner space and having an open top;
A cover rotatably coupled to the upper side of the housing and selectively opening and closing the inner space;
A motor disposed in the internal space;
A power supply unit for supplying power to the motor;
A controller for controlling the motor;
A rotor connected to the motor shaft of the motor and rotated according to the operation of the motor and having a tube containing the sample; And
And a sensor unit for measuring at least one of vibration and temperature of the internal space,
Wherein the control unit decelerates and controls the motor when at least one value of vibration and temperature of the internal space exceeds a predetermined value. The method according to claim 1,
Wherein the sensor unit includes at least one of a vibration sensor that measures vibration of the inner space and a temperature sensor that measures a temperature of the inner space. 3. The method of claim 2,
Wherein the vibration sensor and the temperature sensor are disposed at a central portion of the inner space. The method according to claim 1,
Further comprising a switch for electrically connecting the power source unit and the motor only when the cover is closed. 5. The method of claim 4,
Wherein the switch comprises:
A main body having both ends connected to the power supply unit and the motor, respectively;
A pressing piece which is pressed by the one end of the cover between closing operations of the cover; And
And an on / off button which is pressed by the pressing piece to electrically activate the circuit between operations in which the pressing piece is pressed by the one end of the cover. The method according to claim 1,
A first plate spaced upwardly from a bottom surface of the housing; And
Further comprising a second plate spaced upwardly from the first plate,
Wherein the motor is disposed between the first plate and the second plate, the rotor is disposed on the second plate, and the motor shaft passes through the second plate vertically. The method according to claim 6,
A flange surrounding an outer circumferential surface of the motor;
An elastic material grommet provided on one side of the motor;
A first vibration-proof shaft having one end engaged with the flange and the other end fixed to the grommet; And
And a second vibration-proof shaft, one end of which is fastened to the first plate and the other end of which is fixed to the grommet. 8. The method of claim 7,
Wherein the first vibration-absorbing shaft and the second vibration-absorbing shaft are both vertically extended and spaced apart from each other,
Wherein the grommet is interposed between the first vibration-proof shaft and the second vibration-proof shaft at a position laterally spaced from the motor. The method according to claim 1,
A first plate spaced upward from a bottom surface of the housing in which the inflow hole is formed and having a first through hole;
Further comprising a second plate spaced upwardly from the first plate and having a second through-hole,
A discharge hole is formed in the cover,
Wherein the outer air flows into the inner space through the inflow hole and then is discharged to the outside through the first through-hole, the second through-hole, and the discharge hole between the rotations of the rotor. A method for controlling a dental centrifuge,
Placing a tube containing a sample on a rotor;
Inputting at least one of a rotation speed and a rotation time of the rotor;
Closing the cover;
Inputting a start command relating to the rotation of the rotor; And
Sensing at least one of over vibration and overheating of the dental centrifuge; And
And reducing the rotational speed of the rotor when at least one of the overvoltage and the overheating of the centrifuge is sensed. 11. The method of claim 10,
Wherein the step of sensing at least one of the overvoltage and the overheating of the dental centrifuge includes:
Measuring a vibration and a temperature of the internal space using a motor in an internal space of the dental centrifuge or a vibration sensor and a temperature sensor disposed around the rotor; And
And determining whether the vibration and the temperature exceed a predetermined value. 11. The method of claim 10,
Further comprising electrically connecting a motor for rotating the rotor by closing the cover and a power source for supplying power to the motor. 13. The method of claim 12,
Further comprising the step of opening the cover when at least one of the overvoltage and the overheating of the dental centrifuge is sensed.

Images