Medical handpiece with detachable battery module

Abstract

The present invention provides a medical handpiece with a detachable battery module and, more specifically, to a medical handpiece having a detachable battery module, provided with a battery module that can be detachably mounted on a hand grip portion of the medical handpiece, such that the medical handpiece can be reused even after use. The medical handpiece with a detachable battery module comprises: a motor housing portion in which a motor is mounted; a chuck portion which is integrally formed at the front of the motor housing portion; and a hand grip portion extending downward from the motor housing portion, wherein the hand grip portion has formed therein a mounting space for mounting the battery module, and the battery module is detachably mounted in the mounting space formed in the hand grip portion.

Description

Medical handpiece equipped with a removable battery module

[0001] The present invention relates to a medical handpiece equipped with a detachable battery module, and more specifically, to a medical handpiece equipped with a detachable battery module that can be detachably mounted on the handgrip portion of the handpiece, thereby enabling reuse without damage to electronic components when the handpiece is sterilized.

[0002] Generally, medical handpieces have a pistol-like structure and typically use pneumatic or battery-powered motors as their driving power sources. This is because they are designed to apply the motor's rotational force to a cutting tool (drill) through a gear assembly. Looking at the structure of a typical handpiece, electronic components consisting of a sensor module and a printed circuit board are mounted inside the handgrip, which is equipped with a trigger assembly. A motor housing is provided on the upper part of the handgrip, so the motor operates when the trigger of the handgrip is pressed.

[0003] Since conventional electronic components, such as sensor modules and printed circuit boards, are fixedly mounted on the inside of the handgrip, there was a problem in that it was difficult to repair them without a professional if the components failed. In some cases, even though the failure was caused by the electronic components, the fact that the electronic components were housed inside the handpiece body made it difficult to reuse the handpiece.

[0004] To address the aforementioned problems, Patent No. 2439447 was presented. The said patent had the advantage of forming electronic components in a magazine shape, allowing for repairs to be made by replacing the magazine-shaped electronic components. However, the handpiece according to the above technology is integrated with the main body, and while it has the advantage of being easy to repair in the event of a malfunction, it has the problem that the entire handpiece containing the built-in electronic components must be sterilized, there is a high possibility of damage to the electronic components during the process of repeated sterilization and use, and reuse is impossible due to such damage. Additionally, there is a problem regarding the high likelihood of damage to the electronic components due to sterilization. Furthermore, although the battery is provided to be detachably mounted on the bottom of the handgrip, it is heavy, and there has been inconvenience caused by the protruding battery during use.

[0005] The present invention was devised to solve the above-mentioned problems and aims to provide a medical handpiece equipped with a detachable battery module that eliminates concerns about damage or malfunction of parts by sterilizing only the handpiece when sterilizing the handpiece.

[0006] In addition, the present invention aims to provide a medical handpiece equipped with a detachable battery module that can reduce parts discarded as waste by allowing the battery module to continue to be used even after the disposable handpiece is used.

[0007] In addition, the present invention aims to provide a medical handpiece equipped with a detachable battery module that eliminates the inconvenience caused by the battery protruding during use by allowing the battery to be inserted into the handgrip portion for mounting and detachment.

[0008] In addition, the present invention aims to provide a medical handpiece equipped with a detachable battery module that provides convenience of use in a compact size by inserting the battery into the handgrip portion.

[0009] To achieve the above objective, the present invention provides a medical handpiece having a detachable battery module comprising a motor housing portion in which a motor is mounted internally, a chuck portion integrally formed at the front of the motor housing portion, and a handgrip portion extending downward from the motor housing portion, wherein the handgrip portion has a mounting space formed internally for mounting the battery module, and the battery module is detachably mounted in the mounting space formed in the handgrip portion.

[0010] In the present invention, the hand grip portion comprises: a grip body having a certain space formed inside; a trigger protruding and mounted on the front of the grip body; a direction change switch that moves to both sides of the grip body to change the rotation direction of the motor; a trigger board comprising a trigger detection sensor that detects the operation of the trigger, a switch detection sensor that detects whether the direction change switch moves, a substrate on which the trigger detection sensor and the switch detection sensor are mounted, and a board connector portion formed at the bottom of the substrate; and an opening / closing opening formed at the bottom of the grip body that opens or closes for the attachment / detachment of a battery module.

[0011] The present invention is characterized in that circuit wiring is printed and formed on the substrate.

[0012] In the present invention, the board connector portion is characterized by comprising: an insulating connector body mounted on a substrate; a bar-type connector disposed on both sides of the insulating connector body and electrically connected to the wiring; and a plurality of pin-type connectors disposed in a specific size on the insulating connector body at the center of the bar-type connector and electrically connected to the wiring.

[0013] In the present invention, the battery module comprises: a module housing; a battery pack inserted and mounted in the module housing; a PCM board mounted and connected to the upper part of the battery pack to protect the battery pack; a control board mounted and connected to the upper part of the PCM board to control the operation of the PCM board and the motor; and a power connector part connected to the control board at the upper part of the control board, fixedly fastened to the upper part of the module housing, and inserted and connected to the board connector part.

[0014] In the present invention, the power connector portion comprises: an insulating socket body formed with a pin-shaped hole formed to a certain standard and connected to an insulating connector body, and a pair of bar-shaped holes formed on both sides of the pin-shaped hole; a plurality of pin-shaped sockets formed at the bottom of the pin-shaped hole to which the pin-shaped connector is inserted and electrically connected; a pair of bar-shaped sockets formed at the bottom of the bar-shaped hole to which the bar-shaped connector is inserted and electrically connected; and a connector board having circuit wiring printed thereon to which the pin-shaped socket and the bar-shaped socket are electrically connected.

[0015] In the present invention, the control board comprises a control unit, wherein the control unit is characterized by having the following functions: a handpiece driving mode that switches the rotational direction of the motor by analyzing the transmission signal of the switch detection sensor according to the operation of the direction change switch and controls the speed of the motor by analyzing the transmission signal of the trigger detection sensor according to the operation of the trigger; a battery charging mode that controls the charging of the battery pack when the battery pack is being charged; and a sleep mode that consumes a minimum amount of power when the motor is not operating and the battery pack is not being charged.

[0016] The present invention has the advantage that, since it is equipped with a detachable battery, there is no concern about damage or malfunction of parts even when sterilizing the handpiece for use in surgery.

[0017] In addition, the present invention has the advantage of allowing the handpiece to be reused because the control board and PCM board are provided in the detachable battery module, so no damage to electronic components occurs during sterilization.

[0018] In addition, the present invention has the advantage of being an eco-friendly product because the battery module can be used continuously even after the medical handpiece is used, thereby reducing the parts that are discarded as waste.

[0019] In addition, the present invention has the advantage of eliminating the inconvenience caused by the battery protruding during medical procedures, such as surgery, because the battery can be attached or detached from the handgrip portion.

[0020] In addition, the present invention has the advantage of enabling carbon reduction because the battery module can be used continuously, eliminating the need for a separate process to manufacture the battery module.

[0021] In addition, the present invention has the advantage of providing convenience during use in a compact size because the battery module is inserted into the handgrip portion.

[0022] In addition, since all electronic components are installed in the battery module, the present invention has the advantage of being easily applicable to disposable handpieces.

[0023] FIG. 1 is an overall perspective view of a medical handpiece equipped with a detachable battery module according to the present invention.

[0024] Fig. 2 is a cross-sectional view of Fig. 1.

[0025] FIG. 3 is a cross-sectional view after removing some components from FIG. 2.

[0026] FIG. 4 is an exploded view of the grip body and the opening / closing mechanism of the handgrip portion in a medical handpiece equipped with a detachable battery module according to the present invention.

[0027] FIG. 5 is a perspective view of a trigger board in a medical handpiece equipped with a detachable battery module according to the present invention.

[0028] FIG. 6 is a perspective view of the board connector portion of the trigger board of FIG. 5.

[0029] FIG. 7 is a mounting perspective view illustrating the state of mounting a battery module on a handgrip portion according to the present invention.

[0030] FIG. 8 is an exploded view of a battery module in a medical handpiece equipped with a detachable battery module according to the present invention.

[0031] FIG. 9 is an exploded perspective view of the power connector portion of FIG. 8.

[0032] FIG. 10 is a perspective view of the insulating socket body of the power connector part of FIG. 8.

[0033] FIG. 11 is a cross-sectional perspective view illustrating the coupling relationship between a trigger board and a battery module in a medical handpiece equipped with a detachable battery module according to the present invention.

[0034] Embodiments of the present invention, in which the above objectives can be specifically realized, will be described in detail below with reference to the attached drawings. In describing these embodiments, the same names and reference numerals are used for identical components, and additional explanations thereof will be omitted.

[0035] FIG. 1 is a perspective view of a medical handpiece (1) equipped with a detachable battery module according to the present invention. As shown in the drawing, the medical handpiece (1) equipped with a detachable battery module comprises a motor housing part (10) in which a motor (11) is mounted internally, a chuck part (20) formed integrally at the front of the motor housing part (10), and a hand grip part (30) extending downward from the motor housing part (10), and a detachable battery module (40) is provided inside the hand grip part (30). Since the chuck part (20) and the motor housing part (10) are of a general configuration, a detailed description thereof will be omitted. Below, the hand grip part (30) and the battery module (40) will be described in detail.

[0036] As illustrated in FIG. 1, the hand grip portion (30) is equipped with a grip body (31), a trigger (32) and a direction change switch (33) mounted on the upper front side of the grip body (31). Additionally, an opening / closing opening (35) is installed at the bottom of the hand grip portion (30) to secure the battery module (40). The opening / closing opening (35) is hinge-connected to a hinge end (313) formed at the bottom of the grip body (31) to enable opening and closing, thereby supporting the battery module (40) so that it can be attached and detached and prevents the battery module (40) from coming out of the grip body (31).

[0037] FIG. 2 is a cross-sectional view of the handpiece (1). As shown in the drawing, the hand grip portion (30) is composed of a grip body (31) having a certain space formed inside, a trigger (32) protruding and mounted on the front of the grip body (31), a direction change switch (33) that moves to both sides of the grip body (31) to change the rotation direction of the motor (11), a trigger board (34) equipped with a sensor for detecting the operation of the trigger (32) and the direction change switch (33), and an opening / closing opening (35) mounted on the bottom of the grip body (31). The trigger board (34) comprises a trigger sensor (341) that detects the operation of the trigger (32), a switch sensor (342) that detects whether the direction change switch (33) is moved, a substrate (343) on which the trigger sensor (341) and the switch sensor (342) are mounted, and a board connector part (344) formed at the bottom of the substrate (343).

[0038] FIG. 3 illustrates a drawing of a grip body (31). The grip body (31) forms a space in which a trigger board (34) and a battery module (40) can be mounted. Specifically, on the upper part of the grip body (31), a trigger mounting groove (311) is provided for mounting a trigger (311), and on the lower part of the trigger mounting groove (311), an elliptical tubular switch mounting tube (312) is provided so that a direction change switch (32) can move left and right. On the rear side of the trigger mounting groove (311) and the switch mounting tube (312), a trigger mounting guide (314) is provided on both sides to mount a trigger board (34) on which a sensor for detecting the movement of the trigger (31) and the direction change switch (32) is mounted. The trigger board (34) is inserted from the lower side through the trigger mounting guide (314), pushed up to the upper side, and fixedly mounted. A module mounting space (315) is provided at the bottom of the trigger mounting guide (314) so ​​that a battery module (40) can be mounted. A hinge end (313) is provided at the lower front side of the grip body (31), and a hinge shaft (356) is inserted into the hinge end (313). Referring to FIG. 4, the relationship between the opening / closing mechanism (35) and the grip body (31) will be explained in detail. First, a hinge coupling member (355) is connected to the hinge end (313), and a hinge shaft (356) is inserted and fixed between the hinge coupling member (355) and the hinge end (313). Accordingly, the opening / closing mechanism (35) can be rotatably mounted. The hinge coupling member (355) is connected to a support plate (353) that supports the bottom of the battery module (40). The support plate (353) is provided with a handle mounting groove (354) into which a handle (413), which is rotatably mounted on the bottom of the battery module (40), is seated. At the rear end of the support plate (353), a locking plate (351) is provided that extends upward for the attachment and detachment of the opening / closing port (35). Locking protrusions (352) are formed on both upper sides of the locking plate (351). Additionally, a support step (3511) is formed on the front of the locking plate (351) to support the load of the battery module (40) supported by the support plate (353).A pair of locking pieces (318) are formed at the lower rear of the grip body (31), and a locking groove (352) is formed on the inner side of the locking pieces (318) so that a locking projection (352) can be inserted and fixed in position. In addition, the support step (3511) is supported by a support projection (317) protruding from the center of the locking pieces (318), thereby enabling it to support the weight of the battery module (40). Furthermore, a detachable groove (316) is provided on the upper part of the support projection (317) to allow a finger to be inserted so that the locking plate (351) can be easily detached.

[0039] FIG. 5 is a perspective view of a trigger board (34). As shown in the drawing, the trigger board (34) comprises a trigger detection sensor (341) that detects the operation of a trigger (32), a switch detection sensor (342) that detects whether a direction change switch (33) is moved, a substrate (343) on which the trigger detection sensor (341) and the switch detection sensor (342) are mounted, and a board connector part (344) formed at the bottom of the substrate (343). A bolt hole (3431) for fixing the substrate (343) is formed at the top of the substrate (343). Additionally, wiring connected to the board connector part (344) is formed on the substrate (343). A feature of the present invention is that the substrate (343) is not equipped with separate components, and only wiring is simply printed and formed. The reason for forming only wiring is to prevent the possibility that the product may become defective due to damage to electronic components during the sterilization process. With reference to FIGS. 5 and FIG. 6, the board connector part (344) is described in detail. The board connector part (344) consists of an insulating connector body (3441) mounted on a substrate (343), a bar-type connector (3442) arranged on both sides of the insulating connector body (3441) and electrically connected to wiring (not shown) formed on the substrate (343), and a plurality of pin-type connectors (3443) arranged in a certain standard on the insulating connector body (3441) on the central side of the bar-type connector (3442) and electrically connected to wiring. In addition, guide holes (3444) are formed on both sides of the insulating connector body (3441) to which guide protrusions (4513) are inserted so that the battery module (40) can be inserted and coupled in the correct position. Additionally, a stepped groove (3445) is further formed on the front side of the insulating connector body (3441), and the stepped groove (3445) is a space to allow the pin-type connector (3443) to be bent from horizontal to vertical downward. Additionally, a hook-shaped projection (3446) is further formed on the back side of the insulating connector body (3441) to fix the board connector part (344) to the substrate (343). The bar-type connector (3442) is a connector to which power is connected.The bar-type connector (3442) has a bar-shaped connecting portion and is connected to the board (343) by branching with six pins. Additionally, the pin-type connector (3443) consists of a communication pin-type connector (3443a) with four pins on one side for communication, a battery charging pin-type connector (3443b) with eight pins, and a power pin-type connector (3443c) with four pins. In the case of the battery charging pin-type connector (3443b), the wiring is not connected because it is configured independently of the trigger board (34). The bar-type connector (3442) and the pin-type connector (3443) are inserted into the insulating socket body (451) of the battery module (40) and are electrically connected to the battery module (40).

[0040] FIG. 7 is a drawing illustrating the insertion of a battery module (40) into a hand grip portion (30). The opening (35) of the hand grip portion (30) is opened, and the battery module (40) is inserted into the module mounting space (315) of the grip body (31).

[0041] FIG. 8 is an exploded perspective view of a battery module (40). As shown in the drawing, the battery module (40) comprises a module housing (41), a battery pack (42) inserted and mounted in the module housing (41), a PCM board (43) mounted and connected to the upper part of the battery pack (42) to protect the battery pack (42), a control board (44) mounted and connected to the upper part of the PCM board (43) to control the operation of the PCM board (43) and the motor (11), and a power connector part (45) connected to the control board (44) at the upper part of the control board (44), fixedly fastened to the upper part of the module housing (41), and inserted and connected to the board connector part (344). The module housing (41) comprises a housing body (411), a coupling hole (414) formed on the top of the housing body (411), and a power connector part (45) that partially protrudes outward from the coupling hole (414) and is fastened and fixed to a bolt hole (415) formed on the top. A lower cover (412) is connected to the bottom of the housing body (411) to prevent the battery pack (42) from falling out. Additionally, a handle (413) is formed on the bottom surface of the lower cover (412) to assist in inserting the battery module (40) into the hand grip part (30) using a finger. Inside the module housing (41), the battery pack (42) is inserted and fixed on the upper part of the lower cover (412). A PCM board (43) is mounted on the upper part of the battery pack (42). A PCM protection circuit is provided on the PCM (Protection Circuit Module) board (43). A PCM protection circuit refers to an electronic circuit module designed to protect lithium-ion or lithium-polymer batteries. The PCM protection circuit is a component that protects the battery from overcharging, over-discharging, overcurrent, and short circuits to ensure the battery's stability and lifespan. Additionally, it is equipped with a temperature sensor to prevent the battery from overheating and its temperature from rising excessively, and it can cut off charging and discharging if the battery heats up above a certain temperature.The PCM protection circuit includes a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), a current sensing resistor (Shunt Resistor), a voltage sensing circuit (Comparator or Voltage Detector), a temperature sensor (NTC Thermistor), a protection IC (PMIC), a fuse, or a PPTC (Polymeric Positive Temperature Coefficient). The PCM board (43) cannot perform a self-protection function, and the PCM board (43) is connected to the control board (44) and operates according to a control signal from the controller of the control board (44). The control board (44) is electrically connected to the PCM board (43) and controls the PCM board (43) through the controller. A power connector (45) is mounted on the upper part of the control board (44) and is electrically connected to the control board (44).

[0042] The power connector part (45) is described in detail with reference to FIGS. 8 to 10. FIG. 9 is a perspective view of an insulating socket body (451), a pin-type socket (452), and a bar-type socket (453), and FIG. 10 is a front and rear perspective view of the insulating socket body (451). As illustrated in the drawing, the power connector part (45) comprises an insulating socket body (451) formed with a pin-shaped hole (4511) formed to a certain standard and connected to an insulating connector body (3441), a pair of bar-shaped holes (4512) formed on both sides of the pin-shaped hole (4511), a plurality of pin-shaped sockets (452) formed at the bottom of the pin-shaped hole (4511) into which a pin-shaped connector (3443) is inserted and electrically connected, a pair of bar-shaped sockets (453) formed at the bottom of the bar-shaped hole (4512) into which a bar-shaped connector (3442) is inserted and electrically connected, and a connector board (454) having circuit wiring printed thereon that electrically connects the pin-shaped sockets (452) and the bar-shaped sockets (453). A pin-shaped hole (4511) and a bar-shaped hole (4512) are formed in the insulating socket body (451), and a guide projection (4513) is further formed on the side of the bar-shaped hole (4512), and the guide projection (4513) is inserted into the guide hole (3444) of the insulating connector body (344). The guide projection (4513) and the guide hole (3444) are configured to allow the insulating connector body (344) and the insulating socket body (451) to be coupled in the correct position. A fixing bolt (4514) is further provided at the rear of each guide projection (4513) to fix the insulating socket body (451) to the connector board (454). A pin-type socket (452) is inserted and mounted in the pin-type hole (4511), and a bar-type socket (453) is inserted and mounted in the bar-type hole (4512). A pin-type connector (3443) is inserted into the pin-type socket (452) and electrically connected to each other, and a bar-type connector (3442) is inserted into the bar-type socket (453) and electrically connected to each other.The bar-type socket (453) supplies power from the battery pack (42) to the bar-type connector (3442), and the pin-type socket (452) can be divided into a power supply pin-type socket (4521) that supplies power from the battery pack (42), a charging pin-type socket (4522) that is connected to a charging power source to charge the battery pack (42), and a signal transmission pin-type socket (4523) that transmits a control signal from the control board (43) or transmits a signal transmitted from the detection sensors (341, 342) to the control board (43).

[0043] FIG. 11 illustrates that the board connector part (344) and the power connector part (45) are connected to each other. The power connector part (45) is inserted into the module mounting space (315) of the grip body (31) as the battery module (40) is inserted, and then continued to be inserted into the board connector part (344) of the trigger board (34) located on the upper side. Accordingly, the guide projection (4513) of the power connector part (45) is inserted into the guide hole (3444), thereby allowing the power connector part (45) to be connected to the board connector part (344) in the correct position.

[0044] A control unit is formed on the control board (44). The control unit may be equipped with a handpiece driving mode that switches the rotation direction of the motor (11) by analyzing the transmission signal of the switch detection sensor (342) according to the operation of the direction change switch (33) and controls the speed of the motor (11) by analyzing the transmission signal of the trigger detection sensor (341) according to the operation of the trigger (32), a battery charging mode that controls the charging of the battery pack (42) when the battery pack (42) is being charged, and a sleep mode function that consumes a minimum amount of power when the motor (11) is not operating and the battery pack (42) is not being charged.

[0045] In the medical handpiece (1) equipped with a detachable battery module according to the present invention, the handgrip portion (30) and the motor housing portion (20) may be made of a material such as PC (Poly Carbonate). Since all parts of the handpiece (1), excluding the battery module (40), must be sterilized, it is sterilized in a sterilization room for a certain period of time. During sterilization, a sterilization gas at a constant pressure is supplied, and electronic components may be damaged due to the constant pressure and the sterilizing power of the sterilization gas. The handpiece (1) according to the present invention has the advantage of being able to block the possibility of damage to sensitive components, such as chips, by the sterilization gas, because electronic components other than sensors are not embedded and are provided on the control board.

[0046] As described above, although the present invention has been explained in detail with reference to preferred embodiments, the present invention is not limited to the aforementioned embodiments. It is possible to implement the invention with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and such modifications are also considered to fall within the scope of the rights of the present invention.

[0047] The present invention relates to a medical handpiece equipped with a detachable battery module that can be detachably mounted on the handgrip portion of the handpiece, thereby enabling reuse without damage to electronic components when the handpiece is sterilized, and is an invention with high industrial applicability.

Claims

1. A medical handpiece having a detachable battery module comprising a motor housing portion in which a motor is mounted internally, a chuck portion integrally formed at the front of the motor housing portion, and a handgrip portion extending downward from the motor housing portion, A medical handpiece equipped with a detachable battery module, characterized by including a handgrip portion having a mounting space formed therein for mounting a battery module, and a battery module that is detachably mounted in the mounting space formed in the handgrip portion.

2. In Paragraph 1, The above handgrip part is, A grip body having a certain space formed inside; A trigger protruding from the front of the above-mentioned grip body; A direction change switch that switches the rotation direction of the motor while moving to both sides of the above-mentioned grip body; A trigger board comprising a trigger detection sensor for detecting the operation of the above trigger, a switch detection sensor for detecting whether the direction change switch moves, a substrate on which the trigger detection sensor and the switch detection sensor are mounted, and a board connector portion formed at the bottom of the substrate; and An opening formed at the bottom of the above-mentioned grip body, which is opened or closed for the attachment or detachment of a battery module; A medical handpiece equipped with a detachable battery module characterized by being composed of 3. In Paragraph 2, A medical handpiece equipped with a detachable battery module, characterized in that circuit wiring is printed and formed on the substrate.

4. In Paragraph 3, The above board connector part is, An insulating connector body mounted on the above substrate; A bar-shaped connector disposed on both sides of the insulating connector body and electrically connected to the wiring; and A plurality of pin-type connectors arranged in a specific standard on the insulating connector body at the central side of the bar-type connector and electrically connected to the wiring; A medical handpiece equipped with a detachable battery module characterized by being composed of 5. In Paragraph 4, The above battery module is, Module housing; A battery pack inserted and mounted in the above module housing; A PCM board mounted and connected to the upper part of the battery pack to protect the battery pack; A control board mounted and connected to the upper part of the above PCM board to control the operation of the PCM board and the motor; and A power connector part connected to the control board at the upper part of the control board and fixedly fastened to the upper part of the module housing, and inserted and connected to the board connector part; A medical handpiece equipped with a detachable battery module characterized by being composed of 6. In Paragraph 5, The above power connector part is, An insulating socket body formed by connecting the above insulating connector body, a pin-shaped hole formed to a certain standard, and a pair of bar-shaped holes formed on both sides of the pin-shaped hole; A plurality of pin-shaped sockets formed at the lower part of the pin-shaped hole, into which the pin-shaped connector is inserted and electrically connected; A pair of bar-shaped sockets formed at the lower part of the bar-shaped hole, into which the bar-shaped connector is inserted and electrically connected; and A connector board having printed circuit wiring that electrically connects the pin-type socket and the bar-type socket; A medical handpiece equipped with a detachable battery module characterized by being composed of 7. In Paragraph 6, The above control board includes a control unit, and The above control unit is, A handpiece driving mode that switches the rotation direction of the motor by analyzing the transmission signal of the switch detection sensor according to the operation of the direction change switch, and adjusts the speed of the motor by analyzing the transmission signal of the trigger detection sensor according to the operation of the trigger; A battery charging mode that controls the charging of the battery pack when charging the battery pack; and A sleep mode that consumes minimal power when the above motor is not operating and the above battery pack is not charging; A medical handpiece equipped with a detachable battery module characterized by having a function.

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