Drive and supply unit for implanting dental implants

Abstract

The invention relates to various embodiments of a drive and supply unit (1) for implanting dental implants, which unit can be held with one hand. According to one embodiment, the drive and supply unit (1) comprises an adjustment device (77) for adjusting different transmission ratios such that a handpiece or contra-angle handpiece (7) that can be connected to the drive and supply unit (1) can be operated at different rotational speeds. According to another embodiment, the drive and supply unit (1) comprises three connection devices (6, 8, 9) for connecting a dental handpiece or contra-angle handpiece (7), a battery (10), and a cooling-fluid container (11), wherein the three connection devices (6, 8, 9) are individual, physically separate connection devices. A further embodiment relates to a liquid container (11) which can be connected to the drive and supply unit (1) and comprises a flexible bag (53) in which the liquid (54) is accommodated, a pressurised gas (55) which is provided outside the bag volume (56), and a valve (57) with a valve tube (58).

Description

[0001] DRIVE AND SUPPLY UNIT FOR IMPLANTING DENTAL IMPLANTS

[0002] The present invention relates to a hand-held drive and supply unit for implanting dental implants. The present invention also relates to a medical, in particular dental, treatment device having a liquid container that holds a liquid, for example a cooling liquid, and makes the liquid available to the medical, in particular dental, treatment device for release to the environment. The present invention also relates to a liquid container that can be connected to such a medical, in particular dental, treatment device. The invention also relates to a hand-held drive and supply unit for implanting dental implants having such a liquid container.

[0003] Medical, particularly dental, treatment devices with a liquid container are known from the applications US 2021 / 000569 A1 and WO 02 / 26153 A1. Various delivery devices are proposed for conveying the liquid contained therein, for example, a cooling liquid: pumps, a movable piston, a movable diaphragm, and a spring. These known delivery devices have several disadvantages, for example, pumps require a lot of space and a power supply to operate the pump; there is a risk that mechanical components will break, rendering the delivery device or medical, particularly dental, treatment device unusable; and additional weight due to the delivery devices, which, particularly in the case of cordless treatment devices as disclosed in the aforementioned applications, leads to additional strain on the user's arm or hand.

[0004] According to one aspect, the object is therefore to provide an alternative supply of a preferably wireless, medical, in particular dental, treatment device with a fluid that does not have or at least reduces the disadvantages mentioned above. The supply of the fluid to the treatment device should, in particular, be as space-saving as possible and be achieved by reliable, durable, and lightweight components.

[0005] Devices for implanting dental implants are designed as tabletop devices according to the prior art, see, for example, Figure 1 of patent application US 2018 / 0153466 A1. Such a device comprises a tabletop control unit that can be placed on a work surface and typically has a substantially cuboid-shaped outer housing. A control device for controlling the tabletop control unit and / or a dental handpiece or contra-angle connected to the tabletop control unit is provided in the outer housing. The dental handpiece or contra-angle and an electric drive motor are connected to the tabletop control unit via a connection device on the outer housing and a supply hose that can be connected to it. The supply hose supplies the electric drive motor with electrical drive energy and control signals.The handpiece or contra-angle is detachably connectable to an implantation tool, which can be set in a rotating motion by the drive motor. A delivery device for delivering a treatment and / or cooling fluid is also provided in or on the outer housing. The delivery device comprises a pump, which delivers a cooling and rinsing fluid from the table control unit via a coolant hose extending outside the supply hose and the drive motor to the head of the handpiece or contra-angle. Furthermore, a human-machine interface for operating, setting, and / or selecting parameters of the table control unit and / or the handpiece or contra-angle connected to the table control unit, as well as a graphic display device, are typically provided on the table control unit. A foot control is communicatively connected to the table control unit to control the dental implantation devices during treatment.

[0006] Many users find this design of dental implantation devices, which has remained essentially unchanged for decades, to be a hindrance during practical work. In particular, the multi-part design, including the tabletop control unit, the remote handpiece or contra-angle, and the remote foot control, as well as the connection of these components to the supply hose and, if necessary, a control line between the foot control and the tabletop control unit, as well as the coolant hose, restricts users' freedom of movement and requires additional attention.

[0007] According to a further aspect, the object is therefore to create a dental device for implanting dental implants, which makes it easier for users to work with the dental implantation device and enables them to devote more attention to the treatment.

[0008] According to one embodiment, the liquid container, which holds the dispensable or to be dispensed liquid and is detachably connectable to the medical, in particular dental, treatment device, has an outer wall that separates the interior of the liquid container from the surroundings. A flexible bag with a bag volume in which the liquid, in particular a rinsing and / or cooling liquid, is accommodated, and a pressurized gas is provided in the interior of the container. However, the pressurized gas is located outside the bag volume.The liquid container further comprises a valve with a valve tube that is in fluid communication with the bag volume, wherein the valve is switchable between a closed position, in which the liquid contained in the bag volume cannot escape from the flexible bag, and an open position, in which the liquid contained in the bag volume can escape from the flexible bag through the valve tube. In the open position, the pressure exerted by the pressurized gas on the flexible bag forces the liquid from the flexible bag into the valve tube. A connector of the liquid container connects the liquid container to the medical, in particular dental, treatment device such that the liquid can be conveyed from the flexible bag and through the valve tube into a fluid or liquid line of the medical, in particular dental, treatment device.

[0009] Instead of the mechanical conveying devices known from the prior art, the conveying of the liquid, in particular rinsing and / or cooling liquid, from the liquid container is accomplished by the pressurized gas. Surprisingly, the pressure of the pressurized gas is sufficient to convey the liquid into the liquid dispensing device, which is designed to dispense the liquid from the medical, in particular dental, treatment device into the environment, and in particular into the environment. Thus, particularly preferably, no mechanical conveying devices for conveying the liquid, in particular no pumps or similar devices, are necessary in the medical, in particular dental, treatment device.The elimination of mechanical conveying devices thus advantageously reduces weight, saves space, especially within the treatment device, and eliminates the risk of failure of mechanical parts.

[0010] The flexible bag is under pressure due to the pressurized gas enclosed in the liquid container or container interior. This allows the liquid to be pumped under pressure into the valve tube or the medical, particularly dental, treatment device when the valve is open, without ambient air flowing into the liquid container or the flexible bag, as occurs, for example, with pumping devices. This advantageously prevents contamination of the flexible bag and / or the liquid contained therein by penetrating ambient air and the germs or contaminants contained therein, particularly when the flexible bag contains a sterile or germ-free liquid.

[0011] The outer wall of the liquid container is preferably made of metal, for example steel or aluminum, or plastic, which advantageously ensures safe storage of the pressurized fluids in the container interior. The outer wall of the liquid container is preferably cylindrical, but can also take on other shapes, for example cuboid. The outer wall in particular has an opening, for example on a base or top surface of a cylindrical liquid container, through which the valve tube and / or at least part of the valve and / or a tube connecting the valve to the flexible bag extends. This advantageously enables uncomplicated conveying of the liquid from the flexible bag.

[0012] The flexible bag accommodated in the container interior is preferably made from one or more interconnected and / or laminated plastic films, at least one of which may optionally have a metallic coating. Such plastic films include, for example, plastics from the group of soft polyethylene, nylon or polyester. The metallic coating comprises, for example, aluminum. The aforementioned plastic films advantageously combine high flexibility with sufficient stability so that the liquid is reliably contained despite the prevailing pressure in the container interior. In particular, due to its flexible and / or elastic outer shell, the bag volume of the flexible bag is variable; in particular, the flexible outer shell and / or the bag volume essentially adapts to the amount of liquid accommodated in the flexible bag.

[0013] The flexible bag preferably holds a liquid volume of approximately 30 ml to approximately 100 ml, in particular approximately 35 ml to approximately 70 ml, particularly preferably approximately 50 ml. This advantageously ensures that sufficient liquid, in particular rinsing and / or cooling liquid, is available for at least one (single) treatment, so that the user of the medical, in particular dental, treatment device is not forced to interrupt a treatment in order to replace the empty liquid container. When the flexible bag is completely filled, the flexible bag preferably occupies approximately 50% to approximately 80%, particularly preferably approximately 55% to approximately 70%, and in particular approximately 60% to approximately 65% ​​of the container interior. Accordingly, the volume which the pressurized gas occupies in the container interior when the flexible bag is completely filled is the difference to 100%, iefrom about 20% to about 50%, preferably from about 30% to about 45%, and particularly preferably from about 35% to about 40%. This advantageously ensures that a sufficient amount of gas and sufficient pressure are present to convey the liquid from the flexible bag, especially even when the flexible bag contains only a small amount of liquid. The stated volumes preferably also ensure that the liquid container is not too large, so as not to hinder the handling of the treatment device with the connected liquid container.

[0014] The pressurized gas, which is provided in the interior of the container but outside the bag volume, preferably comprises a non-flammable, as environmentally friendly and cost-effective as possible, for example air, nitrogen or carbon dioxide. The pressure prevailing in the interior of the container when the flexible bag is completely filled is preferably between approximately 7.0 bar and 10.0 bar, preferably 7.5 bar to 8.5 bar, in particular approximately 8.0 bar. When liquid is pumped out of the flexible bag, the internal pressure decreases; however, the specified pressure range is selected such that a sufficient pressure is still present to pump the liquid out of the flexible bag even when the flexible bag only contains a small amount of liquid, so that advantageously at least a large part of the liquid can be pumped out of the flexible bag and / or only a small amount or no residual amount of liquid remains in the flexible bag.

[0015] The valve with the valve tube, which is in fluid communication with the bag volume, preferably comprises a check valve or a check flap or similar shut-off fittings, as are known to those skilled in the art. The valve comprises in particular a movable valve body which is preloaded with a spring element and / or on which the pressure of the gas contained in the container interior acts. The valve can be switched between a closed position, in which the liquid contained in the bag volume cannot escape from the flexible bag, and an open position, in which the liquid contained in the bag volume can escape from the flexible bag through the valve tube, wherein in the open position the pressure which the pressurized gas exerts on the flexible bag drives the liquid from the flexible bag into the valve tube.Preferably, in the closed position, the valve body is pressed into a valve seat of the valve by the spring element and / or a valve opening through which the liquid can flow is sealed by a sealing element, as a result of which escape of the liquid from the flexible bag is not possible. Preferably, in the open position, the valve body is away from the valve seat of the valve against the force of the spring element and / or a valve opening through which the liquid can flow is not sealed by the sealing element, as a result of which the liquid can flow out of the flexible bag. In order to move the valve body from the closed to the open position, the force of the spring element and / or the pressure force acting on the valve body of the pressurized gas in the container interior must be overcome.These features ensure reliable storage of the liquid without unwanted loss of liquid and secure delivery of the liquid from the flexible bag.

[0016] A connector connects the liquid container to the medical, in particular dental, treatment device such that the liquid can be conveyed from the flexible bag and through the valve tube into a fluid or liquid line of the medical, in particular dental, treatment device. The connector is preferably attached to the liquid container and / or formed as part of the liquid container. The connector is thus designed for a reliable, fixed, and detachable connection of the liquid container to the medical, in particular dental, treatment device. In addition, the connector is designed to support or enable the transfer of the liquid from the liquid container into the treatment device.For example, the connector is shaped and / or configured such that it supports the process of connecting the liquid container, for example, the valve and / or valve tube, and the medical, in particular dental, treatment device, for example, a valve and / or a fluid or liquid line of the treatment device. For example, the connector is shaped and / or configured such that it supports or enables the opening of the valve of the liquid container. The connector is thus advantageously configured as a multifunctional component.

[0017] The connector preferably comprises a connector body on which a first connecting element for connecting the connector to the liquid container, in particular the outer wall of the liquid container, and a second connecting element for connecting to the medical, in particular dental, treatment device are provided. The connector or connector body is preferably made of plastic or metal. The first and second connecting elements are preferably arranged on different sides or positions of the connector body. The first connecting element for connecting the connector to the outer wall of the liquid container is preferably arranged on an inner side of the connector and / or positioned such that it extends towards the outer wall of the liquid container.Preferably, the second connecting element for connecting the connector to the medical, in particular dental, treatment device is arranged on an outer side of the connector and / or positioned such that it extends away from the connector body and / or toward the treatment device. These features guarantee a reliable, stable, and detachable connection between the liquid container and the treatment device.

[0018] Preferably, the first connecting element is designed as a mechanical, in particular form-fitting and / or force-fitting connecting element, for example as a thread, snap-in connection, bayonet connection and / or press fit. Preferably, a corresponding (first) counter-connecting element is provided on the liquid container, in particular on its outer wall, which connects with the first connecting element, so that the connector is firmly connected, preferably in a way that is difficult or impossible for the user to detach, to the liquid container, in particular to its outer wall. Particularly preferably, the connection comprises a snap-in connection with a snap-in lug, which is provided, for example, on the connector body, and a recess or a groove, which is provided, for example, on the liquid container, into which the snap-in lug engages.The recess is preferably provided at one end of the liquid container and / or near the opening in the outer wall for the valve. Preferably, a section of the connector engages over or covers at least part of the outer wall of the liquid container. Preferably, the connector comprises a recess into which part of the outer wall of the liquid container can be received. Preferably, the connector forms an apron-like extension that surrounds and / or covers and / or contacts part of the outer wall of the liquid container. Preferably, the first connecting element, for example the locking lug, is provided on the recess or on the apron-like extension. Alternatively or additionally, the first connecting element can comprise an adhesive. These features form a reliable connection between the liquid container and the connector.

[0019] Preferably, the second connecting element for connecting to the medical, in particular dental, treatment device is designed as a mechanical, in particular positive-locking and / or non-positive connecting element, for example as a thread, snap-in connection, bayonet connection, and / or press fit. Alternatively or additionally, the second connecting element can also be designed as a magnetic connecting element and, in particular, comprise a magnetic element for magnetic connection to the treatment device.Preferably, a corresponding (second) counter-connecting element is provided on the medical, in particular dental, treatment device, in particular on a connecting device for detachably connecting the liquid container, for example on a connecting device referred to below as the third connecting device or on a fluid-transmitting interface described in detail below, which connects to the second connecting element, so that the liquid container is connected to the medical, in particular dental, treatment device by means of the connector in a reliable and in particular liquid-tight manner. The (third) connecting device preferably has an opening and a, preferably cylindrical, receptacle into which the liquid container, in particular a rinsing and / or cooling liquid container, can be inserted.The (second) counter-connecting element is arranged in particular in the receptacle, preferably on an inner side of a wall of the receptacle and / or extending in the direction of a central axis of the receptacle and / or at the fluid-transmitting interface. The (second) counter-connecting element is preferably designed as a positive and / or non-positive connecting element, for example as a thread, snap-in connection, bayonet connection and / or press fit. The (second) counter-connecting element can alternatively or additionally also have a magnetic element arranged such that a magnetically attractive connection to the magnetic element of the second connecting element is formed. These features enable a reliable connection to be established between the liquid container and the treatment device.

[0020] Preferably, the connector or connector body does not include an adjusting element for adjusting the valve of the liquid container between the closed and open positions, in particular, no adjusting element operable with a finger. The connector or connector body thus does not comprise such an adjusting element, nor is such an adjusting element mounted on or connected to the connector. This advantageously makes the manufacture of the connector simpler and more cost-effective, and the dimensions of the connector are reduced.

[0021] Preferably, the liquid container, including the connector, does not include a finger-operated pushbutton or finger-operated rotary knob for adjusting the valve of the liquid container between the closed and open positions. The liquid container therefore does not comprise such an adjusting element, nor is such an adjusting element mounted on or connected to the liquid container. In particular, a targeted and / or precisely metered delivery of the liquid from the liquid container is impossible if the liquid container is not connected to the medical, particularly dental, treatment device. This advantageously prevents unintentional manual use of the liquid container and thus potentially incorrect application of the liquid contained in the liquid container.

[0022] Preferably, the connector is arranged at the end of the liquid container where the valve of the liquid container is provided. Particularly preferably, the connector is provided on the base or top surface of a cylindrical liquid container. This advantageously facilitates the connection of the liquid container to the treatment device, in particular to a (third) connection device.

[0023] Preferably, the connector body has a passage into which the valve and / or valve tube of the liquid container and / or (if the liquid container is connected to the treatment device) a valve and / or a fluid or liquid line of the medical, in particular dental, treatment device extends. Preferably, the passage has a wall surrounding the valves, the valve tube and / or the liquid line. Preferably, the wall of the passage is spaced from the valves, the valve tube and / or the liquid line. Preferably, the passage forms a guide for connecting the liquid container and the treatment device. Preferably, the passage and / or the wall is / are cylindrical.Preferably, the passage is configured such that the valve and / or valve tube of the liquid container is movable therein, so that the valve can be switched between the closed and the open position. Preferably, the connector, in particular the passage, is configured such that a part of a valve or a fluid or liquid line or a tappet of the treatment device can contact the valve tube of the liquid container to move the valve of the liquid container into the open position. These features advantageously facilitate the connection of the liquid container for the user.

[0024] The liquid contained in the liquid container, in particular in the flexible bag, preferably comprises water, preferably sterile or germ-free water, an aqueous solution, for example a saline solution, an anesthetic, a medicinal agent and / or an indicator liquid. The liquid contained in the liquid container preferably comprises a cooling liquid, for example water or a saline solution, for cooling the treatment site and / or a moving, for example rotating or vibrating, tool. The liquid contained in the liquid container preferably comprises a rinsing liquid, for example water or a saline solution, for rinsing the treatment site. This advantageously makes it possible to design medical, in particular dental, treatment devices, the use of which requires cooling and / or rinsing of the treatment site and / or the tool, to be wireless.

[0025] The medical, in particular dental, treatment device is preferably designed as a wireless treatment device without a cable connection to an energy and fluid source arranged outside the outer housing, in particular as a wireless drive and supply unit for implanting dental implants, as described in more detail below. However, it is also conceivable to connect medical, in particular dental, treatment devices that are connected via a cable connection to an external (electrical) energy and / or gas source arranged outside the outer housing, but not to an external liquid or water source, to such a liquid container in order to provide the treatment device with liquid for the treatment.Treatment devices connected to a fluid reservoir, whether with or without a cable, could also be designed for endodontic or restorative applications, for example. Dental treatment devices, whether with or without a cable, for prophylaxis, such as a powder jet device that delivers a gas stream containing an abrasive powder and a fluid, can also be equipped with such a fluid reservoir, which in particular holds a germ-free or sterile fluid, such as water.

[0026] Preferably, an actuating element is provided in the outer housing of the medical, in particular dental, treatment device or the hand-held drive and supply unit, for example at the fluid-transmitting interface, which controls the conveyance of the liquid from the liquid container, in particular the flexible bag, and / or the dispensing of the liquid, for example to the fluid or liquid line and / or the liquid dispensing device of the medical, in particular dental, treatment device and / or to the environment. The actuating element preferably comprises a valve. The actuating element is preferably designed as part of the (third) connection device of the treatment device or subsequent to the (third) connection device.By providing the adjusting element in the treatment device, it is not necessary to provide an adjusting element on the liquid container, which advantageously makes the production of the liquid container simpler and more cost-effective.

[0027] The actuating element or valve is preferably designed and / or arranged such that it can move the valve of the liquid container from the closed position to the open position. The actuating element is preferably designed and / or arranged such that it projects into the passage of the connector body. The actuating element is preferably designed and / or arranged such that it contacts the valve of the liquid container and / or the valve tube, in particular in or through the passage. The actuating element of the medical, in particular dental, treatment device comprises, for example, a fluid or liquid line or a plunger provided on the actuating element for actuating the valve of the liquid container.These features advantageously ensure that when the liquid container is connected to the treatment device, in particular to the valve of the treatment device, the valve of the liquid container is simultaneously moved into the open position. The connection of the liquid container to the treatment device, in particular to the fluid-transmitting interface, is achieved, for example, by pushing or plugging the liquid container into or onto the (third) connection device. When the valve tube of the liquid container comes into contact with the actuating element of the treatment device, the valve tube and the valve body connected to it are moved from the closed to the open position, whereby the force of the spring element and / or the pressure force of the pressurized gas in the container interior acting on the valve body must be overcome.If the liquid container is detached from the fluid-transfer interface and / or removed from the treatment device, the valve tube of the liquid container is no longer in contact with the actuating element of the treatment device, and the spring element of the valve of the liquid container moves the valve tube and the valve body into the closed position. Thus, when the liquid container is connected to the treatment device, the valve of the liquid container continuously assumes the open position, whereby the delivery of the liquid from the liquid container is advantageously controlled exclusively by the valve of the treatment device.

[0028] Preferably, the actuating element or valve of the medical, in particular dental, treatment device is controllable by the control device arranged in the outer housing of the treatment device and via a human-machine interface provided on the medical, in particular dental, treatment device or by an interface arranged remotely from the outer housing, for example by a foot control.

[0029] According to one embodiment, the use of a liquid container described in this document as a liquid source of a preferably wireless medical, in particular dental, treatment device is provided. As described above, the treatment device can be designed, for example, for dental implantation, endodontic, prophylactic, and / or restorative applications. Preferably, the treatment device comprises a (third) connection device and / or a fluid-transmitting interface for connecting the liquid container. In particular, the liquid container is the sole liquid source of the treatment device.

[0030] According to one embodiment, a method is provided for supplying a preferably wireless, medical, in particular dental, treatment device with fluid using a fluid container described in this document as the fluid source. As described above, the treatment device can be designed, for example, for dental implantation, endodontic, prophylactic, and / or restorative applications. Preferably, the treatment device comprises a (third) connection device and / or a fluid-transmitting interface for connecting the fluid container. In particular, the fluid container is the sole fluid source of the treatment device.

[0031] According to one embodiment, the medical, in particular dental, treatment device comprises a hand-held drive and supply unit for implanting dental implants. The treatment device or hand-held drive and supply unit comprises an outer housing that separates the drive and supply unit from its surroundings. An electric motor for rotating a dental tool and a control device for controlling the drive and supply unit are arranged in the outer housing. A first connection device, a second connection device, and a third connection device are provided on or in the outer housing, wherein these first, second, and third connection devices are independent, separate connection devices.The first connection device is designed for the detachable connection of a dental handpiece or contra-angle to the drive and supply unit, for the mechanical transmission of a rotating drive movement generated by the electric motor to a shaft in the handpiece or contra-angle and the dental tool connected thereto, and for conducting a liquid and / or a cooling fluid from the drive and supply unit into the handpiece or contra-angle; the second connection device is provided for the detachable connection of a battery for supplying the electric motor with electrical energy; and the third connection device is designed for the detachable connection of a liquid container or cooling fluid container. The three connection devices are arranged in particular at three different locations or positions on or in the outer housing.

[0032] The drive and supply unit for implanting dental implants (hereinafter also referred to as the drive and supply unit for short) according to the invention, which can be held with one hand, thus creates a dental implantation device in which all the components necessary for operating and carrying out a dental implantation, including the handpiece or contra-angle handpiece, battery and liquid container or container for or with cooling fluid, can be held with one, i.e. a single, hand and / or are provided in or on the outer housing. This eliminates in particular all hose and line connections to energy and fluid sources extending outside the outer housing into the environment, which advantageously makes handling of the implantation device considerably easier for the user.

[0033] The inventive, one-handed drive and supply unit for implanting dental implants additionally or alternatively creates a dental implantation device in which all necessary components of the dental implantation device, including the handpiece or contra-angle, battery, and fluid container or cooling fluid container, are movable, in particular movable together, relative to the patient receiving the implant and / or relative to the doctor performing the implantation during the implantation of a dental implant. This advantageously makes handling of the implantation device considerably easier for the user, since when the doctor's hand moves with the drive and supply unit, no torsional or tensile forces caused by hose or line connections act on the doctor's hand.

[0034] During use of the one-handed drive and supply unit or the dental implantation device, the component associated with the respective connection device (handpiece or contra-angle; battery; cooling fluid container or fluid container) is connected to all three connection devices. The arrangement or positioning of the three connection devices and thus of the respective connected components in or on the outer housing is therefore extremely important with regard to the manageability of the drive and supply unit, weight distribution, a good view of the treatment site, freedom of movement during use of the drive and supply unit, and other application-related aspects.To this end, a large number of considerations, studies, and tests were carried out with prototypes in order to achieve the best possible arrangement of the three connection devices and the respective connected components in or on the outer housing, particularly with regard to different user anatomies, for example users with a smaller and / or more delicate build versus users with longer and / or stronger limbs, particularly arms and hands. The features described throughout the document with regard to the arrangement or positioning of the three connection devices are the result of these considerations and tests, with the aim of achieving the most advantageous design possible for the drive and supply unit for implanting dental implants or the dental implantation device, which can be held with one hand, for all users, regardless of body size and build.

[0035] Preferably, the first connection device for releasably connecting a dental handpiece or contra-angle handpiece and at least the second connection device or the third connection device are arranged at different and / or opposite ends of the drive and supply unit. Particularly preferably, the first connection device is arranged at a first end of the drive and supply unit and the second connection device for releasably connecting a battery is arranged at an opposite second end of the drive and supply unit. Preferably, the different and / or opposite ends are arranged along a longitudinal axis passing through the drive and supply unit. For handling of the drive and supply unit, it is advantageous if heavier components, such as the handpiece or contra-angle handpiece and the battery, are provided at opposite ends for the purpose of distributing the mass or balancing the mass.

[0036] Preferably, the first connection device for releasably connecting a dental handpiece or contra-angle and optionally the second connection device or the third connection device, particularly preferably the second connection device for releasably connecting a battery and / or a battery connected thereto, are arranged along the longitudinal axis of the drive and supply unit. For handling of the drive and supply unit, it is advantageous if heavier components, such as the handpiece or contra-angle and the battery, are arranged along one axis and in particular close to the hand or arm of the user. The longitudinal axis is thus preferably designed as a common longitudinal axis of the aforementioned connection devices and components.The first and the further, preferably the second, connecting device, in particular also the handpiece or angle piece and the battery or the liquid container or cooling fluid container, are preferably arranged in alignment along the (common) longitudinal axis. Alternatively, the first and the further, preferably the second, connecting device, in particular also the handpiece or angle piece and the battery or the liquid container or cooling fluid container, are arranged around the (common) longitudinal axis such that the longitudinal axis extends between these components. Preferably, further, in particular heavier, components of the drive and supply unit are arranged along or around the longitudinal axis, for example the electric motor and / or a gearbox.This arrangement of the connecting devices, the electric motor and the battery, and if necessary also the handpiece or contra-angle and the gear, in relation to the longitudinal axis of the drive and supply unit also creates an essentially straight drive train, which results in design and assembly advantages.

[0037] Preferably, the first connection device for releasably connecting a dental handpiece or contra-angle and optionally the second connection device or the third connection device, preferably the second connection device for releasably connecting a battery, are arranged in a sectional plane through the drive and supply unit, which extends through the opposite ends of the drive and supply unit and through a top and bottom of the outer housing. For handling of the drive and supply unit, it is advantageous if heavier components, such as the handpiece or contra-angle and the battery, are provided in one plane, i.e., the sectional plane, and in particular close to the hand or arm of the user.The respective center axes of the first connection device and the second or third connection device and / or the center axis of the drive and supply unit are preferably arranged in the cutting plane or extend therein, thereby achieving an advantageous mass distribution, particularly when the handpiece or contra-angle and the battery or the liquid container or cooling fluid container are connected to the respective connection device. Preferably, further, particularly heavier, components of the drive and supply unit are arranged in the cutting plane, for example, the electric motor and / or a gear.By arranging the electric motor and the battery, and if necessary also the transmission, and the connection devices in the sectional plane of the drive and supply unit, a drive train or drive package is formed within the drive and supply unit, resulting in design and assembly advantages.

[0038] Preferably, the other connection device of the second or third connection device, preferably the third connection device for detachably connecting a liquid container or cooling fluid container, is arranged offset from and / or outside the cutting plane. Particularly preferably, the other connection device, in particular the third connection device and / or a liquid container or cooling fluid container connected thereto, is arranged laterally and / or laterally offset from and / or next to the cutting plane. Particularly preferably, the other connection device, in particular the third connection device and / or a liquid container or cooling fluid container connected thereto, is arranged offset and / or laterally offset from and / or next to the two remaining connection devices, preferably the first and second connection device.This offset or lateral arrangement of one of the connecting devices relative to the other two connecting devices advantageously makes it possible to create a compact, in particular not too long, drive and supply unit and / or dental implantation device.

[0039] Preferably, the other connection device of the second or third connection device, in particular the third connection device for detachably connecting a liquid container or cooling fluid container and / or a liquid container or cooling fluid container connected thereto, is arranged offset from the longitudinal axis of the drive and supply unit. Particularly preferably, the other connection device, in particular the third connection device and / or a liquid container or cooling fluid container connected thereto, is arranged laterally and / or laterally offset from and / or next to the longitudinal axis. This offset or lateral arrangement of one of the connection devices relative to the other two connection devices advantageously makes it possible to create a compact, in particular not too long, drive and supply unit and / or dental implantation device.

[0040] Preferably, the second or third connection device, in particular the third connection device for detachably connecting a liquid container or cooling fluid container and / or a liquid container or cooling fluid container connected thereto, is provided between the two connection devices arranged in the cutting plane. Additionally or alternatively, the second or third connection device, in particular the third connection device for detachably connecting a liquid container or cooling fluid container, arranged offset or laterally to the cutting plane, is provided between the two connection devices arranged in the cutting plane with respect to the longitudinal axis.Particularly preferably, the second or third connection device, in particular the third connection device, is set back in relation to the first connection device for the detachable connection of a dental handpiece or angle piece, or is offset in the direction of the other, preferably the second, connection device. These features, among others, form a free space, preferably on an end surface of the outer sleeve, which is delimited on a first side by the protruding, and preferably laterally offset, first connection device and on a further, second side by the second or third connection device, in particular the third connection device. During proper use of the drive and supply unit, part of the user's hand can fit in this free space; preferably, the drive and supply unit orthe dental implantation device can be supported on a part of the hand accommodated in the free space, for example the back of the hand and / or the wrist, whereby the handling and ergonomics of the drive and supply unit are advantageously further improved.

[0041] Preferably, a central plane extends through the drive and supply unit, with the first connection device being arranged on a first side of the central plane and the second and third connection devices being arranged on another, second side of the central plane. The central plane is preferably arranged at a right angle or substantially at a right angle to the cutting plane. These features advantageously ensure an unobstructed view of the user of the first connection device and a connected handpiece or contra-angle, as well as the treatment site.

[0042] Preferably, the electric motor and, if applicable, a gearbox are arranged adjacent to the first connection device and / or in alignment with the first connection device. The gearbox is provided in particular for changing the speed and / or torque of the rotational movement generated by the electric motor. Preferably, the first connection device and the electric motor and, if applicable, the gearbox have a common central axis around and / or along which they are arranged. These features provide design advantages, for example, space-saving, and assembly-related advantages. Preferably, the electric motor with the first connection device and, if applicable, the gearbox are arranged on the first side of the central plane.In particular, the electric motor and optionally the transmission are arranged with respect to the second connection device and / or a battery connected to the second connection device and / or the third connection device and / or a liquid container or cooling fluid container connected to the third connection device in such a way that the center plane extends between the electric motor on the first side of the center plane and the second connection device and / or the battery connected to the second connection device and / or the third connection device and / or a liquid container or cooling fluid container connected to the third connection device on the second side of the center plane. The second and third connection devices are thus located in particular on the second side of the center plane.These features advantageously ensure that the user has an unobstructed view of the first connecting device and a connected handpiece or contra-angle and the treatment site.

[0043] The control device for controlling the drive and supply unit preferably comprises a circuit board which is arranged between the electric motor and the second connection device, in particular a receptacle for the second connection device, and / or a battery connected to the second connection device. The circuit board preferably has a plurality of sections which are arranged at an angle other than 0° to one another, with at least one section being arranged between the electric motor and the second connection device and / or a battery connected to the second connection device. Particularly preferably, the circuit board or at least a section thereof is arranged parallel to the central plane and / or extends in the central plane. These features bring about a space-saving arrangement of the control device, in particular the circuit board, in the outer housing of the drive and supply unit.

[0044] The second connection device preferably has an opening and a, preferably cylindrical, receptacle into which the battery can be inserted. The opening is preferably arranged at the second end or a second end face of the outer housing. The opening and / or receptacle is preferably arranged in the cutting plane and / or the cutting plane passes through the opening and / or receptacle. The receptacle is preferably dimensioned such that it encloses at least part of the battery or the entire battery. A closure, for example a lid, which closes the opening is preferably provided at the end of the opening. Electrical contacts are preferably provided in the receptacle, in particular opposite the opening, for the electrical connection to and / or transmission of electrical energy from the battery to the drive and supply unit, in particular the electric motor.These features advantageously guarantee a reliable and safe energy supply to the drive and supply unit.

[0045] The third connection device preferably has an opening and a, preferably cylindrical, receptacle into which the liquid container or cooling fluid container can be inserted. The opening can be arranged at the second end or the second end surface of the outer housing. Alternatively, the opening of the third connection device, as described above for the third connection device, is arranged between the first and second connection devices and / or laterally offset from the longitudinal axis or sectional plane and / or outside the sectional plane. The receptacle is preferably dimensioned such that it encloses at least part of the liquid container or cooling fluid container or the entire liquid container or cooling fluid container.Preferably, the third connection device comprises a fluid-transmitting interface for connection to a liquid container or cooling fluid container, via which liquid from the liquid container or cooling fluid from the cooling fluid container can be transferred to the drive and supply unit. Particularly preferably, the fluid-transmitting interface is provided opposite the opening of the third connection device. These features advantageously guarantee a reliable and safe transfer of the liquid or cooling fluid to the drive and supply unit.

[0046] Particularly preferably, the fluid-transmitting interface comprises at least one liquid or fluid line extending from the third connection device, in particular from the fluid-transmitting interface, to the first connection device, and via which the liquid or cooling fluid can be transferred from the liquid container or cooling fluid container connected to the third connection device to the handpiece or contra-angle connected to the first connection device. The liquid or fluid line preferably extends completely and / or over its entire length within the drive and supply unit and / or the outer housing.These features, in particular the provision of the liquid or fluid line in the outer housing, advantageously facilitate the handling of the drive and supply unit and / or the dental implantation device, since the user does not have to pay attention to liquid or fluid lines running outside the drive and supply unit.

[0047] The first connection device preferably has a coupling pin or a coupling tube onto which the handpiece or contra-angle handpiece can be plugged to transmit fluid and drive force. The coupling pin or coupling tube is preferably arranged at the first end or the first end surface of the outer housing. The coupling pin or coupling tube is preferably arranged in the cutting plane and / or the cutting plane passes through the coupling pin or coupling tube. The coupling pin or coupling tube is preferably hollow so that a shaft of the handpiece or contra-angle handpiece and / or the electric motor extends into the coupling pin or coupling tube in order to transmit a rotary movement and / or torque generated by the electric motor to the handpiece or contra-angle handpiece and a dental tool connectable thereto.Preferably, a further fluid-transmitting interface is provided on the coupling pin or coupling tube for transferring the liquid or cooling fluid from the drive and supply unit to the handpiece or contra-angle handpiece. The fluid-transmitting interface is, in particular, connected to the liquid or fluid line in a fluid-transmitting manner. The fluid-transmitting interface comprises, for example, a bore in the coupling pin or coupling tube. These features advantageously enable a reliable connection of the handpiece or contra-angle handpiece to the drive and supply unit and a reliable transmission of the liquid or cooling fluid and the rotational movement and / or torque. The battery can be designed either as a non-rechargeable primary battery or, with regard to environmental impact, advantageously as a repeatedly rechargeable accumulator.To charge the accumulator, it is preferably detachable from the drive and supply unit, in particular the second connection device, and connectable to a separate, independent charger. Alternatively, the drive and supply unit may also have charging contacts that can be connected to a charger and / or to an electrical power supply network, so that the accumulator advantageously does not have to be detachable from the drive and supply unit for charging.

[0048] All three connection devices are preferably designed as detachable connection devices, so that the component associated with the respective connection device (handpiece or contra-angle; battery; fluid container or cooling fluid container) can be detached from the connection device and / or replaced. At least one of the connection devices is designed, for example, as a plug connection, screw connection, bayonet connection, or similar detachable connection, which advantageously allows the user to easily and quickly connect, disconnect, and / or replace the respective component.

[0049] From the above, it can be seen that all three connection devices are combined in or on the outer housing. The outer housing is preferably designed as a common outer housing for all three connection devices. In particular, the outer housing connects and / or encompasses and / or integrates the three connection devices, so that the drive and supply unit for implanting dental implants forms a compact unit that fits comfortably in the hand and is easy to handle.

[0050] A dental implantation device comprises a hand-held drive and supply unit as described above and throughout the document, as well as a handpiece or contra-angle, a battery, and a fluid container or cooling fluid container. Preferably, the handpiece or contra-angle, the battery, and the fluid container are detachably connectable to the second connection device, and the fluid container or cooling fluid container is detachably connectable to the third connection device.

[0051] According to one embodiment, a drive and supply unit for implanting dental implants that can be held with one hand comprises an outer housing that separates the drive and supply unit from the surroundings, an electric motor arranged in the outer housing for rotatingly driving a dental tool, and a control device arranged in the outer housing for controlling the drive and supply unit. Furthermore, a first connection device is provided on the outer housing for detachably connecting a dental handpiece or contra-angle piece to the drive and supply unit, for mechanically transmitting a rotating drive movement generated by the electric motor to a shaft in the handpiece or contra-angle piece, and for conducting a cooling fluid from the drive and supply unit into the handpiece or contra-angle piece.A second connection device provided on or in the outer housing enables the detachable connection of a battery for supplying the electric motor with electrical energy, and a third connection device provided on or in the outer housing serves for the detachable connection of a cooling fluid container. Furthermore, a gearbox is arranged in the outer housing and is operatively connected to the electric motor in order to receive the rotating drive movement generated by the electric motor and to change the speed and / or torque of the received rotating drive movement. A shaft arranged in the outer housing or a shaft section of a shaft train is operatively connected to the electric motor in order to transmit the rotating drive movement generated by the electric motor to the dental handpiece or contra-angle handpiece via the first connection device.Furthermore, an adjusting device is provided in the outer housing for setting different gear ratios. The adjusting device is designed such that it (i) optionally couples the shaft to the gear to set a (first) gear ratio, so that a rotating drive movement at the speed changed by the gear can be transmitted to the dental handpiece or contra-angle via the shaft and the first connecting device, or (ii) decouples the shaft and the gear to set a further (second, different) gear ratio, so that the rotating drive movement at the speed generated by the electric motor can be transmitted (directly) via the shaft and the first connecting device to the dental handpiece or contra-angle.

[0052] Preferably, the different embodiments of drive and supply units that can be held with one hand and are described in this document also comprise an adjusting device for setting different gear ratios and, if appropriate, also the gear mechanism described below, in particular a planetary gear mechanism.

[0053] The provision of such an adjustment device for setting different gear ratios makes it considerably easier for users to work with the drive and supply unit or the dental implantation device. Implanting a dental implant involves several steps. With regard to the dental implantation device, in particular the one-handed drive and supply unit and the handpiece or contra-angle, two steps with different requirements are essential: first, drilling into the jawbone to create a hole to accommodate the implant, and second, the subsequent insertion or implantation of the implant into this hole. Different speeds and torques are required for these two steps, forcing users to use different handpieces or contra-angles with different gear ratios.This means that the user must interrupt their workflow to disconnect the contra-angle handpiece required for drilling from the drive motor and to connect the contra-angle handpiece to the drive motor for inserting the implant. By arranging the adjusting device in a drive and supply unit that can be held with one hand, the need to change the contra-angle handpiece is now advantageously eliminated. Due to the different transmission ratios that can be achieved with the aid of the adjusting device, the user can thus use a single contra-angle handpiece to both drill the hole in the jawbone and insert the implant. In contrast to the prior art, the adjusting device and in particular the gearing are therefore advantageously not located in the handpiece or contra-angle handpiece.

[0054] To set the different gear ratios, a shaft or a shaft section, which is operatively connected to the electric motor in order to transmit the rotating drive movement generated by the electric motor to the dental handpiece or contra-angle handpiece via the first connection device, is movable, in particular displaceable, relative to the gear mechanism or a gear element. The shaft or the shaft section is particularly preferably axially displaceable relative to the gear mechanism - with respect to a central axis of the gear mechanism or the coupling pin or the electric motor. The shaft or the shaft section is preferably (axially) displaceable by the adjusting device. The shaft or the shaft section is preferably (axially) displaceable within and / or relative to the outer housing. The shaft or the shaft section can be designed as a solid shaft or hollow shaft or can have a blind bore.Advantageously, according to this exemplary embodiment, it is therefore not necessary to move the transmission or individual transmission elements axially and / or radially to set the different transmission ratios. The transmission or individual transmission elements are thus advantageously designed to be immobile for selecting the different transmission ratios.

[0055] Preferably, the shaft is part of a shaft train that connects the electric motor to the dental handpiece or contra-angle via the first connection device for transmitting the rotating drive movement generated by the electric motor. The movable shaft can thus also be designed as a shaft section of the shaft train, whereby the terms "shaft" and "shaft section" are used synonymously in this document. It is essential that the shaft or shaft section is (axially) displaceable relative to the gearbox in order to be able to set the different gear ratios.

[0056] The shaft or shaft section preferably comprises a first driver element and a second driver element, wherein the shaft and the first and second driver elements are jointly, and in particular simultaneously, movable or displaceable by the adjusting device. The first and second driver elements comprise, for example, a pin, a bolt or a receptacle for a pin or bolt, for example a recess. The pin or bolt preferably passes through the shaft and / or projects above the (cylindrical) outer circumference of the shaft or shaft section. In particular, the first and second driver elements are arranged at a distance from one another on the shaft. In particular, the first and second driver elements are arranged axially offset on the shaft with respect to a central axis of the transmission or the coupling pin or the electric motor.The shaft and the first and second driver elements thus advantageously form a robust and simple assembly that enables reliable setting of the different gear ratios.

[0057] Preferably, the joint movement of the shaft, first and second driver elements selectively couples the first driver element with a first counter-driver element or the second driver element with a second counter-driver element, whereby the different transmission ratios can be set. The first and second counter-driver elements comprise, for example, a pin, a bolt or a receptacle for a pin or bolt, for example a recess. Preferably, the first and second counter-driver elements are arranged on different components of the drive and supply unit. Preferably, the first and second counter-driver elements are arranged at a distance from one another, in particular - with respect to a central axis of the transmission or the coupling pin or the electric motor - axially spaced.Preferably, a counter-driver element is provided on a shaft which is directly connected to the electric motor (i.e. without the interposition of the gearbox) for transmitting the rotating drive movement. Preferably, a counter-driver element is provided on a component of the gearbox or on a component connected to the gearbox, for example a shaft or a bushing. Preferably, the pin or bolt passes through the shaft or component and / or projects beyond the (cylindrical) outer circumference of the shaft or component. Preferably, the first and second counter-driver elements are axially immovable or fixed with respect to a central axis of the gearbox or the coupling pin or the electric motor. Preferably, the first and second counter-driver elements are designed to be rotatable about the central axis of the gearbox or the coupling pin or the electric motor.Particularly preferably, the joint movement or joint (axial) displacement of the shaft, first, and second driver elements selectively engages a pin or bolt in a receptacle for a pin or bolt, thereby enabling the different gear ratios to be set. These features advantageously enable a reliable and robust connection of the driver elements and counter-driver elements for setting the different gear ratios.

[0058] Preferably, the first driver element and the first counter-driver element connect the shaft or the shaft section directly, without the interposition of the gearbox, to the electric motor, so that the speed and / or torque of the rotating drive movement generated by the electric motor or of the rotor shaft of the electric motor and the speed and / or torque of the shaft have the same value. The transmission ratio is therefore 1:1. Particularly preferably, the first counter-driver element comprises a pin and the first driver element a receptacle for the pin. Particularly preferably, the first counter-driver element is arranged on the rotor shaft of the electric motor or on a shaft operatively connected to the electric motor or the rotor shaft. This advantageously creates a transmission ratio for drilling the hole in the jawbone to accommodate the implant.

[0059] The second driver element and the second counter-driver element preferably connect the shaft or the shaft section to the gearbox, such that the speed and / or the torque of the rotating drive movement generated by the electric motor or of the rotor shaft of the electric motor and the speed of the shaft have different values. The rotating drive movement generated by the electric motor is thus transmitted to the shaft via the rotor shaft of the electric motor and optionally a further shaft connected to the rotor shaft, the gearbox, the second driver element and the second counter-driver element. Particularly preferably, the second driver element comprises a pin and the second counter-driver element comprises a receptacle for the pin. Particularly preferably, the second counter-driver element is provided on a bushing which is connected to the gearbox, in particular to the rotary shaft. Preferably, the shaft extends through a bore in the bushing.The gear unit is preferably designed as a reduction gear unit, for example, with an increase or decrease ratio of 5:1 or 10:1. The gear unit preferably comprises a planetary gear unit. This advantageously provides a gear ratio, in particular a reduction ratio, for inserting the implant into the bore in the jawbone with a reduced speed and increased torque value compared to the speed and torque values ​​generated by the electric motor. Alternatively, the gear unit can also be designed as a step-up gear unit, in which the speed value output by the gear unit is increased and the torque value is lower than the speed and torque values ​​generated by the electric motor.

[0060] The pin receptacle of a driver element or a counter-driver element preferably has a recess or a milling provided in an end face of the (cylindrical) shaft or the (cylindrical) shaft section or the (cylindrical) bushing connected to the transmission. The end face preferably comprises an apex or vertex which projects beyond the recess, in particular axially - relative to a longitudinal axis of the shaft / bush or the central axis of the transmission or the coupling pin or the electric motor. An inclined plane extends from the apex in the direction of the pin receptacle, in particular the recess, such that the pin slides into the recess on the inclined plane for coupling into the recess if the pin is not directly received in the pin receptacle when connecting the driver element to the counter-driver element.Preferably, the inclined plane connects the apex or vertex with the pin receptacle. This advantageously ensures a reliable connection or coupling of a driver element or a counter-driver element.

[0061] As already mentioned above, the transmission is preferably designed as a planetary transmission. Due to the movable, displaceable shaft or the movable, displaceable shaft section, it is advantageously not necessary to arrange the planetary transmission or individual components thereof, for example the sun gear, the planetary gear carrier with the planetary gears, or the ring gear, axially movable in the outer housing relative to the center axis of the transmission and / or the coupling pin and / or the electric motor, in order to set the different gear ratios. The planetary transmission and / or its components are thus not displaceable, neither axially nor radially, in particular relative to the outer housing.This advantageously simplifies switching between the different gear ratios, as the separation and subsequent joining of components of the planetary gear, in particular gears, is avoided.

[0062] The adjusting device for setting the different transmission ratios preferably comprises a link device which has a link groove, a link block, in particular in the form of a rotating body, for example a ball, and a control disc with a control track provided on the circumference of the control disc. The provision of such a link device enables smooth and reliable setting of the different transmission ratios.

[0063] The link groove is preferably provided in a rotationally fixed inner sleeve. The rotationally fixed inner sleeve preferably encloses the coupling pin. The link groove is preferably arranged at a distance from the coupling pin. The link groove is preferably covered by the outer housing. The link groove preferably extends radially around the center axis of the transmission and / or the coupling pin and / or the electric motor and in particular is offset obliquely along the center axis. The link groove preferably surrounds the center axis in such a way that one end of the link groove is closer to the transmission and another end is closer to the coupling pin. The link groove preferably surrounds the center axis in such a way that one end of the link groove is further away from the transmission and another end is further away from the coupling pin. These features ensure reliable setting of the different gear ratios.

[0064] The control disc is preferably operatively connected to the shaft or the shaft section. The control disc is preferably arranged within the rotationally fixed inner sleeve, in particular rotationally fixed with respect to the outer housing. The control disc is preferably connected to the shaft in such a way that the control disc, the shaft, and the first and second driver elements are jointly (and in particular simultaneously) movable, in particular axially displaceable. The control disc preferably extends in a plane that is arranged orthogonal to the center axis, wherein this plane in particular intersects the link groove and / or the link groove is also arranged in this plane. These features enable reliable setting of the different transmission ratios.

[0065] The control track preferably extends only over a part of the circumference or shell of the control disc, in particular the ends of the control track enclose an angle between approximately 45° and 90". The control track is preferably recessed, for example milled, into the outer circumference or shell of the control disc.

[0066] The sliding block preferably extends from an operating element of the adjusting device, in particular one provided on the outer housing, through the sliding block groove into the control track. By actuating the operating element, the sliding block can be guided along the central axis of the gearbox and / or the coupling pin and / or the electric motor due to the oblique arrangement of the sliding block groove, whereby the control disk and the associated shaft with the driver element and the counter-driver element can be or are displaced axially along the central axis to set the different gear ratios. This design and the described mode of operation of the adjusting device and / or sliding block device advantageously provide a space-saving option for setting the different gear ratios in an axial manner - with respect to the central axis.

[0067] The control disc preferably comprises a bore, in particular a central bore, in which the shaft or the shaft section and a rolling bearing, in particular a ball bearing, are accommodated. The rolling bearing, in particular, rotatably mounts the shaft in the control disc. The provision of the rolling bearing thus advantageously effects a decoupling between the shaft and the control disc with respect to the rotational movement of the shaft, while simultaneously maintaining a coupling with respect to the axial displaceability of the control disc with the shaft.

[0068] The actuating device is preferably adjustable via an operating element operable by a user. The operating element is preferably operatively connected to the actuating device and / or formed as part of the actuating device. The operating element operable by the user is preferably movable on and / or relative to the outer housing. The operating element is in particular formed as part of the drive and supply unit. The operating element preferably comprises a rotating ring, a rotating sleeve, or a slider, which can be rotated about the central axis of the transmission and / or the coupling pin and / or the electric motor.The inside of the control element preferably features a recess or milled groove in which the sliding block is received and / or guided. When the control element is moved or rotated, the sliding block is entrained and guided in the sliding groove, thereby activating the adjusting device as described above. These features allow the user to conveniently set and select the various gear ratios.

[0069] Preferably, a locking device is provided between the user-operable operating element and the non-rotatable inner sleeve, which locking device is designed to fix the operating element in a position in which one of the different transmission ratios is set, in particular relative to the inner sleeve and / or the outer housing. The locking device preferably comprises a locking body preloaded with a spring element and a locking recess into which the locking body engages. For example, the spring element and the locking body are provided in the movable operating element, and the locking recess is provided in the non-rotatable inner sleeve. For example, the spring element and the locking body are provided in the non-rotatable inner sleeve, and the locking recess is provided in the movable operating element.Such a locking device advantageously fixes the position of the movable control element and thus the set gear ratio and gives the user haptic feedback that a gear ratio has been set.

[0070] The invention will be explained below using preferred embodiments and with reference to the accompanying drawings.

[0071] Figure 1 shows an embodiment of a drive and supply unit for implanting dental implants that can be held with one hand, with a view of a front side or first end surface of the drive and supply unit, on which the first connection device for detachably connecting a dental handpiece or angle piece is provided;

[0072] Figure 2 shows the rear or second end face of the drive and supply unit of Figure 1, the second connection device for releasably connecting a battery and the third connection device for releasably connecting a liquid or cooling fluid container;

[0073] Figure 3 shows the drive and supply unit of Figure 1 with connected handpiece or angle piece and liquid or cooling fluid container;

[0074] Figure 4 shows the drive and supply unit of Figure 1 with connected battery and connected liquid or cooling fluid container;

[0075] Figure 5 is a sectional view of the drive and supply unit of Figure 1;

[0076] Figure 6 shows the drive and supply unit of Figure 1 in a partially transparent representation;

[0077] Figure 7 shows an embodiment of a drive and supply unit for implanting dental implants that can be held with one hand, with a second connection device that can be closed by a closure for detachably connecting a battery and a third connection device for detachably connecting a liquid or cooling fluid container;

[0078] Figure 8 shows a sectional view of an embodiment of a liquid container which can be connected to a medical, in particular dental, treatment device, with an unfilled flexible bag; Figure 9 shows a sectional view of the liquid container of Figure 8 with filled flexible

[0079] Bag;

[0080] Figure 10 shows a sectional view of an embodiment of a valve of a liquid container which can be connected to a medical, in particular dental, treatment device;

[0081] Figure 11 shows a first embodiment of a liquid container with a connector that connects the liquid container to a medical, in particular dental, treatment device in such a way that liquid can be conveyed from the flexible bag;

[0082] Figure 12 shows a second embodiment of a liquid container with a connector that connects the liquid container to a medical, in particular dental, treatment device in such a way that liquid can be conveyed from the flexible bag;

[0083] Figure 13 shows a sectional view of a third embodiment of a liquid container with a connector that connects the liquid container to a medical, in particular dental, treatment device in such a way that liquid can be conveyed from the flexible bag;

[0084] Figure 14 shows a sectional view of a liquid container with a connector which is received in a (third) connection device of a medical, in particular dental, treatment device and is connected to a valve and a liquid line of the medical, in particular dental, treatment device;

[0085] Figure 15 shows the liquid container, the connector, the valve and the liquid line of Figure 14 in plan view;

[0086] Figure 16 shows an embodiment of a medical, in particular dental, treatment device in which the liquid is conveyed from the liquid container to the liquid dispensing device via a liquid line which is arranged at least partially outside the outer housing;

[0087] Figure 17 shows an embodiment of a medical, in particular dental, treatment device in which the liquid is conveyed from the liquid container to the liquid dispensing device via a liquid line arranged within the outer housing;

[0088] Figure 18 shows an embodiment of a medical endodontic treatment device which can be supplied with liquid from a liquid container with a flexible bag;

[0089] Figure 19 shows an embodiment of a drive and supply unit for implanting dental implants that can be held with one hand, with an operating element with which a user can select different gear ratios;

[0090] Figure 20 is a sectional view through the first connecting device provided on the outer housing, the operating element for setting the adjusting device, the adjusting device for setting different transmission ratios and the gear comprising a planetary gear, wherein the drive train, which transmits the rotating drive movement generated by the electric motor to a handpiece or angle piece, is directly (ienot via the gearing) is connected to the electric motor (gear ratio 1:1); Figure 21 is a sectional view through the first connection device provided on the outer housing, the operating element for setting the adjusting device, the adjusting device for setting different gear ratios and the gearing comprising a planetary gear, wherein the drive train, which transmits the rotating drive movement generated by the electric motor to a handpiece or contra-angle, is connected to the electric motor via the gearing (gear ratio not equal to 1:1);.

[0091] Figure 22 shows a further sectional view of the operating element for setting the adjusting device, the adjusting device for setting different gear ratios and the planetary gear;

[0092] Figure 23 is a spatial representation of the adjusting device for setting different gear ratios and the planetary gear;

[0093] Figure 24 the movable shaft of the adjusting device;

[0094] Figure 25 shows the bushing which is rotatably connected to the gearbox in order to selectively connect the gearbox to the drive train which transmits the rotating drive movement generated by the electric motor to a handpiece or contra-angle.

[0095] The medical, particularly dental, treatment device 100, 25 shown in Figures 1-7, which comprises, for example, a drive and supply unit 1 for implanting dental implants that can be held with one hand, has an outer housing 2 that separates the drive and supply unit 1 from its surroundings. The outer housing 2 has several sides or surfaces: a top side 2A, which, when the drive and supply unit 1 is held correctly, for example, during implantation of an implant, forms the upper end of the drive and supply unit 1. A human-machine interface 26, for example, a control element, an adjusting element, or a display, can preferably be provided on the top side 2A. A bottom side 2B is arranged opposite the top side 2A. The bottom side 2B forms the lower end of the drive and supply unit 1 when the drive and supply unit 1 is held correctly, for example, during implantation.A first end face or first end 2C forms a side wall of the outer housing 2 and thus connects the top side 2A to the bottom side 2B. At the first end 2C, in particular, a first connection device 6 is provided. A second end face or second end 2D forms a further side wall of the outer housing 2 and thus also connects the top side 2A to the bottom side 2B. At least one further connection device, for example a second connection device 8 or third connection device 9, is preferably provided on the second end face 2D. The first end face 2C and the second end face 2D are preferably opposite one another. On the other sides of the drive and supply unit 1, in particular of the outer sleeve 2, further side faces 2E are provided, which connect both the top side 2A to the bottom side 2B and the first end face 2C and the second end face 2D to one another.

[0096] The first connection device 6 arranged on the outer housing 2, in particular on the first end surface 2C, is provided for the detachable connection of a dental handpiece or contra-angle 7 (see Figure 3) to the drive and supply unit 1, for the mechanical transmission of a rotating drive movement generated by an electric motor 3 (see Figures 5 and 6) to a shaft in the handpiece or contra-angle 7, and for the transmission of a liquid or cooling fluid from the drive and supply unit 1 into the handpiece or contra-angle 7. The first connection device 6 has a coupling pin 24 onto which the handpiece or contra-angle 7 can be plugged, transmitting fluid and drive force.

[0097] The coupling pin 24 is rotationally symmetrical and / or cylindrically shaped. Preferably, the handpiece or contra-angle piece 7 is rotatably mounted on the coupling pin 24, so that the handpiece or contra-angle piece 7 can be rotated relative to the drive and supply unit 1 for improved handling during dental treatment.

[0098] The coupling pin 24 is hollow to accommodate a shaft connecting the electric motor to a shaft in the handpiece or contra-angle 7 and a dental tool 4. The coupling pin 24 includes at least one bore through which a liquid or cooling fluid can be transferred from the drive and supply unit 1 to the handpiece or contra-angle 7.

[0099] The coupling pin 24 extends, in particular in a straight line, from the first end surface 2C, preferably from a coupling surface 27, along a coupling pin center axis 28. The coupling surface 27 is preferably circular. The coupling pin 24 and in particular the coupling surface 27 are arranged near a side surface 2E. The coupling pin 24 and the coupling surface 27 are thus not arranged centrally, but offset from the center of the end surface 2C. The coupling surface 27, in particular its peripheral edge, preferably directly borders a side surface 2E, see Figures 2 and 4. This lateral arrangement of the coupling pin 24 and / or the coupling surface 27, among other things, forms a free space 29. Part of the user's hand can fit into this free space 29 during proper use and / or correct posture during an implantation treatment of the drive and supply unit 1.

[0100] A battery 10, in particular a repeatedly rechargeable accumulator, for supplying the electric motor 3 with electrical energy can be detachably connected to the second connection device 8 provided on or in the outer housing 2, in particular on the second end surface 2D. The second connection device 8 comprises an opening 19 and a cylindrical receptacle 20 into which the battery 10 can be inserted and stored. The cylindrical receptacle 20 can be dimensioned such that it accommodates only a portion of the battery 10, so that a section of the battery 10 protrudes from the receptacle 20 and / or the outer housing 2, so that the battery 10 can be easily removed from the receptacle 20 or inserted into the receptacle 20, see Figures 3 and 4.Alternatively, see Figure 7, the receptacle 20 is dimensioned to accommodate and / or enclose the entire battery 10 and is preferably closable by a closure 34, for example, a lid, so that the penetration of dirt into the receptacle 20 is reduced. The closure 34 is movable relative to the opening 19, for example, rotatable, screwable, removable, or foldable, so that the battery 10 can be inserted into and removed from the receptacle 20 without hindrance.

[0101] The third connection device 9 provided on or in the outer housing 2 is designed for the detachable connection of a liquid container or cooling fluid container 11. The third connection device 9 has an opening 21 and a preferably cylindrical receptacle 22 into which the liquid container or cooling fluid container 11 can be inserted. On a wall of the third connection device 9 opposite the opening 21, a fluid-transmitting interface 23 is provided for connection to the liquid container or cooling fluid container 11, via which fluid from the liquid container or cooling fluid from the cooling fluid container 11 can be transferred to the drive and supply unit 1.The cylindrical receptacle 22 can be dimensioned such that it only receives a part of the liquid container or cooling fluid container 11, so that a section of the liquid container or cooling fluid container 11 protrudes from the receptacle 22 and / or the outer housing 2, so that the liquid container or cooling fluid container 11 can be easily removed from the receptacle 22 or inserted into the receptacle 22, see Figures 3 and 4. Alternatively, see Figure 7, the receptacle 22 is dimensioned such that it receives and / or encloses the entire liquid container or cooling fluid container 11, and can preferably be closed by a closure 35, for example a lid, so that the penetration of contaminants into the receptacle 22 is reduced.The closure 35 is movable relative to the opening 21, for example rotatable, screwable, removable or foldable, so that the liquid container or cooling fluid container 11 can be inserted into the receptacle 22 and removed therefrom without hindrance.

[0102] The first, second and third connecting devices 6, 8, 9 are independent, separate connecting devices which are arranged at different positions of the one-handed drive and supply unit 1 and / or the outer housing 2.

[0103] The first connection device 6 for releasably connecting a dental handpiece or contra-angle 7 and the second connection device 8 for releasably connecting a battery 10 are arranged at the opposite ends or end surfaces 2C, 2D. The ends 2C, 2D and / or the first and second connection devices 6, 8 are arranged along a longitudinal axis 30 passing through the drive and supply unit 1. The first and second connection devices 6, 8, preferably also the handpiece or contra-angle 7 and the battery 10, are arranged around the longitudinal axis 30 such that the longitudinal axis 30 extends between these components 6, 8, 7, 10.

[0104] As can be seen from Figures 5 and 6, further components of the drive and supply unit 1 are arranged along or around the longitudinal axis 30, for example the electric motor 3 and / or a gearbox 31. The electric motor 3, the gearbox 31, and the first connection device 6 are arranged along a coupling pin electric motor center axis 28, which in particular also forms the axis of rotation of the electric motor 3, thereby forming a compact drive unit. The battery 10 is arranged below the electric motor 3 and / or the gearbox 31 and / or the first connection device 6, see Figure 5. The electric motor 3 and / or the gearbox 31 and / or the first connection device 6 are arranged above the battery 10. The electric motor 3 and / or the gearbox 31 and / or the first connection device 6, on the one hand, and the battery 10, on the other, are arranged at different levels within the outer housing 2.The receptacle 20 and / or the battery 10 have a battery receptacle center axis 32, which is arranged parallel or substantially parallel to the coupling pin electric motor center axis 28. Due to this arrangement of the electric motor 3, the gear 31, and the first and second connecting devices 6, 8, optionally with the battery 10 and the handpiece or contra-angle 7, the entire drive train is arranged compactly and linearly in a partial volume of the drive and supply unit 1 or the outer housing 2. The first connecting device 6 for detachably connecting a dental handpiece or contra-angle 7 and the second connecting device 8 for detachably connecting a battery 10 are further arranged in a sectional plane 14 through the drive and supply unit 1.The section plane 14 extends through the opposite ends 2C, 2D of the drive and supply unit 1 and through the top 2A and bottom 2B of the outer housing 2, see Figure 5. The respective axes 28, 30, 32 are arranged in the section plane 14 or extend therein. The electric motor 3 and / or the transmission 31 are also arranged in the section plane 14 and / or are intersected by it.

[0105] The third connection device 9 for detachably connecting a liquid container or cooling fluid container 11 and / or the liquid container or cooling fluid container 11 accommodated therein is / are arranged offset from and / or outside the cutting plane 14. The third connection device 9 is arranged offset from the first and second connection devices 6, 8. A fluid center axis 33 of the third connection device 9 and / or the liquid container or cooling fluid container 11 is arranged parallel or substantially parallel to the axes 28, 30, 32. The third connection device 9 is provided (with respect to the longitudinal axis 30) between the two connection devices 6, 8 arranged in the cutting plane 14. The third connection device 9 is set back with respect to the first connection device 6 for detachably connecting a dental handpiece or contra-angle piece 7 and / or offset in the direction of the second connection device 8.The free space 29 described above is also formed by this setting back of the third connection device 9.

[0106] Figure 6 shows that a central plane 15 extends through the drive and supply unit 1, with the first connection device 6 for connecting the handpiece or angle piece 7 being arranged on a first side 16 of the central plane 15 and the second and third connection devices 8, 9 being arranged on another, second side 17 of the central plane 15. The central plane 15 is arranged at a right angle or substantially at a right angle to the cutting plane 14. The two receptacles 20, 22 are thus arranged below the central plane 15 and / or substantially next to one another and / or at the end 2D of the drive and supply unit 1. The joint provision of the receptacles 20, 22 at the rear end 2D enables unhindered access to the receptacles 20, 22 and thus uncomplicated replacement of the battery 10 and the liquid container or cooling fluid container 11.

[0107] The electric motor 3 and the transmission 31 are arranged on the first side 16 of the center plane 15. The electric motor 3 and the transmission 31 are further arranged with respect to the second connection device 8 and / or a battery 10 connected to the second connection device 8 and the third connection device 9 and / or a liquid container or cooling fluid container 11 connected to the third connection device 9 such that the center plane 15 extends between the electric motor 3 and the transmission 31 on the first side 16 of the center plane 15 and the second connection device 8 and the third connection device 9 on the second side 17 of the center plane 15. The second and third connection devices 8, 9 and / or the respective receptacles 20, 22 are thus located on the second side 17 of the center plane 15.Furthermore, a control device 5 is arranged in the outer housing 2, which is intended to control the drive and supply unit 1 and / or the handpiece or angle piece 7 connected thereto (see Figures 5 and 6). The control device 5 has a circuit board 18 arranged between the electric motor 3 and the second connection device 8, in particular the receptacle 20. The circuit board 18 has several sections arranged at an angle other than 0' to one another, with at least one section being arranged between the electric motor 3 and the second connection device 8. At least one section of the circuit board 18 is arranged parallel to the center plane 15 and / or extends in the center plane 15.

[0108] Figure 3 shows a dental implantation device 25 comprising a hand-held drive and supply unit 1 and, connected thereto, a handpiece or angle piece 7, a battery 10, and a fluid container or cooling fluid container 11. It can be seen that the dental implantation device 25 forms a compact, stable unit defined or delimited by the outer housing 2 and on which the three connection devices 6, 8, 9 are arranged together in ergonomically optimized positions.

[0109] The following describes the structure of the liquid container or cooling fluid container 11 shown in Figures 7-15, which can be connected to a medical, in particular dental, treatment device 100, preferably to a wireless treatment device 100, 25, 1 without a line connection to an energy and fluid source arranged outside the outer housing 2, in order to dispense a liquid 54 contained in the liquid or cooling fluid container 11 to the medical, in particular dental, treatment device 100, 25, 1. The liquid or cooling fluid container 11 is referred to below as liquid container 11 for the sake of simplicity.

[0110] The liquid container 11 is intended to hold a liquid 54, which can be dispensed by the liquid dispensing device 36, 37 (see Figures 16, 17) of the treatment device 100. The liquid container 11 can be detachably connected to a connection device 9 provided on or in the outer housing 2 of the treatment device 100. The liquid container 11 has a preferably cylindrical outer wall 51, which separates a container interior 52 of the liquid container 11 from the surroundings. A flexible bag 53 is arranged in the container interior 52, which has a bag volume 56 in which the liquid 54 is received (see in particular Figure 13).Due to its flexible and / or elastic outer shell, the bag volume 56 of the flexible bag 53 is variable. In particular, the flexible outer shell and / or the bag volume 56 essentially adapts to the amount of liquid held in the flexible bag 53 and / or the bag volume 56 changes according to a change in the amount of liquid contained in the flexible bag 53. For example, the bag volume 56 decreases when liquid 54 is conveyed from the flexible bag 53, and the bag volume 56 increases when liquid 54 is held in the flexible bag 53.

[0111] The liquid container 11 also contains a pressurized gas 55 (see Figure 13), which is located in the container interior 52 but outside the bag volume 56. The pressurized gas 55 thus surrounds the flexible bag 53 and any liquid 54 provided therein. The pressurized gas 55 is provided in particular between the flexible bag 53 and the inside of the outer wall 51. Depending on the amount of liquid 54 located in the flexible bag 53 or the liquid container 11, the pressurized gas 55 occupies different volumes within the liquid container 11. For example, the pressurized gas 55 occupies a larger volume in the liquid container 11 if a smaller amount of liquid 54 is accommodated in the flexible bag 53.For example, the pressurized gas 55 occupies a smaller volume in the liquid container 11 when a larger amount of liquid 54 is contained in the flexible bag 53. Accordingly, the pressure of the pressurized gas 55 decreases when the gas 55 occupies a larger volume in the liquid container 11 and / or a smaller amount of liquid 54 is contained in the flexible bag 53. The pressure of the pressurized gas 55 increases when the gas 55 occupies a smaller volume in the liquid container 11 and / or a larger amount of liquid is contained in the flexible bag 53.

[0112] 54 is recorded.

[0113] The liquid container 11 further comprises a valve 57 with a valve tube 58, which is in fluid communication with the flexible bag 53, in particular the bag volume 56. The valve 57 is adjustable between a closed position (see Figure 10), in which the liquid contained in the bag volume

[0114] 56, in which the liquid 54 held in the bag volume 56 cannot escape from the flexible bag 53, and an open position (see Figures 13, 14), in which the liquid 54 held in the bag volume 56 can escape from the flexible bag 53 through the valve tube 58. In the open position, the pressure exerted by the pressurized gas 55 on the flexible bag 53, in particular the liquid 54 held therein, drives the liquid 54 from the flexible bag 53 into the valve tube 58, and in particular further into the medical, in particular dental, treatment device 100, preferably into the liquid dispensing device 36, 37 and beyond into the environment.

[0115] The valve shown in Figures 10, 13 and 14 and described below shows a possible embodiment of a valve of the liquid container 11. Of course, there are various other valves or actuating elements that are also suitable for permitting a reliable, directed conveyance of the liquid 54 from the liquid container 11 only when the liquid container 11 is connected to the treatment device 100, 25, 1. The valve

[0116] 57 comprises a movable valve body 59, which is pre-tensioned by a spring element 69 and / or to which the pressure of the pressurized gas contained in the container interior 52

[0117] 55 acts. In the closed position (see Figure 10), the valve body 59 is pressed by the spring element 69 and / or the gas pressure into a valve seat of the valve 57 and / or in the direction of a sealing element 68 of the liquid container 11. The valve body 59 is connected to the valve tube 58, so that with the movement of the valve body 59, the valve tube 58 and at least one valve opening 67 arranged in the valve tube 58, through which the liquid 54 can flow from the valve 57 and / or the flexible bag 53 into the medical, in particular dental, treatment device 100, 25, 1, are also moved.

[0118] The sealing element 68 is arranged immovably relative to the valve 57, the valve tube 58 and / or the valve opening 67. The sealing element 68 surrounds the valve tube 58 and / or the at least one valve opening 67. The sealing element 68 is designed, for example, as a sealing ring or annular sealing element, wherein the valve tube 58 extends through a central opening of the annular sealing element 68. In the closed position of the valve 57, the valve tube 58, in particular the at least one valve opening 67, is arranged such that the sealing element 68 closes the conveying path of the liquid 54 out of the valve 57 and / or through the valve 57 and / or the valve opening 67, so that the liquid 54 cannot be conveyed out of the liquid container 11 or escape (see Figure 10).

[0119] In the open position, the valve body 59 is moved away from the valve seat of the valve 57 against the force of the spring element 69 and / or the gas pressure of the gas 55 and / or the valve opening 67 is moved into a position in which the sealing element 68 does not close or seal the conveying path of the liquid 54 through the valve 57 and / or the valve opening 67, so that the liquid 54 can flow out of the flexible bag 53 (see Figures 13, 14). The movement of the valve body 59 and the valve tube 58 from the closed to the open position against the force of the spring element 69 and / or the pressure force of the pressurized gas 55 acting on the valve body 59 is preferably effected during and / or by the connection of the liquid container 11 to the connection device 9.A connector 60 is provided on the liquid container 11, which detachably connects the liquid container 11 to the medical, in particular dental, treatment device 100, 25, 1 such that the liquid 54 can be conveyed from the flexible bag 53 and through the valve tube 58 into a liquid line 70 of the medical, in particular dental, treatment device 100, 25, 1. The connector 60 has a connector body 61, on which a first connecting element 62 for connecting the connector 60 to the outer wall 51 of the liquid container 11 (see Figures 13, 14) and a second connecting element 63 for connecting to the medical, in particular dental, treatment device 100, 25, 1 are provided (see Figures 11, 12, 13).

[0120] The first connecting element 62 is arranged on an inner side of the connector 60 so that it extends toward the outer wall 51 of the liquid container 11. The connector 60 comprises a circular skirt or a circular, skirt-like extension 66, on which, in particular on the inner side thereof, the first connecting element 62 is provided or formed as part thereof. The first connecting element 62 is designed in particular as a mechanical connecting element: it comprises at least one locking lug 65 that engages in a first mating connecting element 65A on the outer wall 51, in particular a recess or a groove, of the liquid container 11. The first connecting element 62 and mating connecting element 65A thus form a positive connection 65, 65A between the connector 60 and the liquid container 11; however, other types of connection are clearly also possible, in particular a force-fitting connection.

[0121] The second connecting element 63 for connecting the connector 60 to the medical, in particular dental, treatment device 100, 25, 1 is arranged on an outer side of the connector 60 and / or positioned such that it extends away from the connector body 61 and / or in the direction of the treatment device 100, 25, 1. The second connecting element 63 comprises a mechanical, in particular positive-locking and / or non-positive-locking connecting element, for example a bayonet connection with extensions 73 on the connector 60 for engaging in a groove on the treatment device 100, 25, 1 (see Figure 11), a thread (see Figure 12) and / or a locking device (see Figure 13), in which a movable locking element 75 of the treatment device 100, 25, 1 engages in a receptacle 74 on the connector 60.On the medical, in particular dental, treatment device 100, 25, 1, in particular on the (third) connection device 9 for detachably connecting the liquid container 11, a corresponding (second) counter-connecting element 63A (see Figures 13, 14), for example the groove of the bayonet connection mentioned above, a thread or the aforementioned movable locking element 75, is provided, which connects to the second connecting element 63, so that the liquid container 11 is connected to the medical, in particular dental, treatment device 100, 25, 1 by and through the connector 60 in a reliable and in particular liquid-tight manner.

[0122] The connector 60 is arranged at the end of the liquid container 11 where the valve 57 is provided. The connector body 61 has a passage 64 into which the valve tube 58 and / or a liquid line 70 of the medical, in particular dental, treatment device 100, 25, 1 extends when the liquid container 11 is connected to the treatment device 100, 25, 1, in particular to the (third) connection device 9. The passage 64 is delimited by a preferably cylindrical wall 64A. The wall 64A surrounds the valve tube 58 and / or the liquid line 70. Preferably, the free end of the wall 64A remote from the valve 57 projects beyond the free end of the valve tube 58 remote from the valve 57 and / or the free end of the valve tube 58 remote from the valve 57 extends into the passage 64, but not beyond its free end (see Figures 13, 14).This advantageously makes it difficult or even impossible for the valve tube 58 to move against the spring force of the spring element 69 and / or the gas pressure of the gas 55, and thus the (unintentional) discharge of the liquid 54 from the liquid container 11 when the latter is not connected to the treatment device 100, 25, 1.

[0123] Figure 14 shows schematically in a sectional view the liquid container 11 with the connector 60, which is received in the (third) connection device 9 of the medical, in particular dental, treatment device 100, 25, 1 and is connected to an actuating element 71, in particular a valve, and a liquid line 70 of the treatment device 100, 25, 1. The liquid container 11 is connected at the fluid-transmitting interface 23 via the connector 60, in particular the second connecting element 63, to the treatment device 100, 25, 1, in particular the second counter-connecting element 63A, such that the liquid 54 can be conveyed from the flexible bag 53 through the valve 57, the valve tube 58 to the valve 71 and, if the valve 71 is open, through the liquid line 70 to the liquid dispensing device 36, 37 and into the environment, see also Figures 15 and 17.

[0124] As can be seen from Figure 14, by connecting the liquid container 11 to the treatment device 100, 25, 1, the valve 57 of the liquid container 11 is moved into the open position. This movement is caused by the contact of the actuating element or valve 71 and / or the liquid line 70 of the treatment device 100, 25, 1 with the valve tube 58, whereby the valve tube 58 and the valve body 59 of the liquid container 11 are moved toward the flexible bag 53 against the spring force of the spring element 69 and / or the gas pressure of the gas 55. Due to the pressure exerted by the pressurized gas 55 on the flexible bag 53 and the liquid 54 contained therein, with the valve 57 open, liquid now flows into the valve 57, through the valve tube 58, and at least as far as the valve 71.As long as the liquid container 11 is connected to the treatment device 100, 25, 1, the valve 57 remains in the open position. If the liquid container 11 is separated from the treatment device 100, 25, 1, the valve tube 58 and the valve body 59 move toward the connector 60 due to the spring force of the spring element 69 and / or the gas pressure of the gas 55, whereby, as described above, the sealing element 68 closes the conveying path of the liquid 54 from or through the valve 57 and / or the valve opening 67, so that the valve 57 assumes the closed position and no liquid 54 can escape from the liquid container.

[0125] The actuating element 71 provided in the outer housing 2 of the medical, in particular dental, treatment device 100, 25, 1, which in particular comprises a valve, controls the conveyance of the liquid 54 from the liquid container 11 and / or the dispensing of the liquid 54 via the liquid dispensing device 36, 37. As described above, the liquid 54 flows at least as far as the valve 71 when the liquid container 11 is connected to the treatment device 100, 25, 1 and thus when the valve 57 of the liquid container 11 is open. If the valve

[0126] If the valve 71 assumes an open position, then the conveyance of the liquid 54 via the liquid line 70 and the liquid dispensing device 36, 37 and discharge to the environment is possible. If the valve 71 assumes a closed position, then the conveyance and discharge of the liquid 54 via the liquid line 70 and the liquid dispensing device 36, 37 is prevented. The actuating element or valve 71 is preferably arranged near the fluid-transmitting interface 23 and / or (third) connection device 9.

[0127] For actuating the actuating element 71 between the open and closed positions, a control device is provided which can be operated by the user of the medical, in particular dental, treatment device 100, 25, 1. Preferably, the control device 5 arranged in the outer housing 2 (see Figures 5, 6) controls the valve 71. According to one embodiment, the control device 5 is operatively connected to the human-machine interface 26 (see Figures 1-3) so that a user of the treatment device 100, 25, 1 can operate the valve 71 via the interface 26. Alternatively, a human-machine interface arranged outside and / or remote from the outer housing 2 can be used to control the valve 71.

[0128] 72 (see Figure 3) is provided. Preferably, the interface 72 comprises a foot control, preferably a radio foot control.

[0129] Figures 16 and 17 show two variants of the line for the liquid 54 to the liquid dispensing device 36, 37. According to Figure 16, the liquid 54 conveyed from the liquid container 11 flows at least partially or largely outside the outer housing 2 of the medical, in particular dental, treatment device 100, 25, 1. The liquid line 70 comprises a connecting pipe 70A that passes through the outer housing 2 downstream of the valve 71. The section of the liquid line 70 from the valve 71 to the connecting pipe 70A runs inside the outer housing 2. A hose (not shown) can be connected, for example plugged, to this connecting pipe 70A, which runs outside the outer housing 2 and via which the liquid 54 flows to the liquid dispensing device 36.The hose can also be connected, for example plugged, to the fluid dispensing device 36, in particular an end section 70B of the fluid line 70, which is formed as part of the fluid dispensing device 36, so that the fluid 54 can flow from the hose into the fluid dispensing device 36. The fluid dispensing device 36 comprises a clamp 36A with which the end section 70B can be fastened to the treatment device 100, 25, 1, in particular to a handpiece or angle piece 7. According to this exemplary embodiment, the fluid 54 is thus also dispensed from outside the outer housing 2 and / or the handpiece or angle piece 7 to the environment, the tool 4 and / or a treatment site.

[0130] According to Figure 17, the liquid 54 conveyed from the liquid container 11 flows through the liquid dispensing device 37 within the outer housing 2 of the medical, in particular dental, treatment device 100, 25, 1 until it is released into the environment. For this purpose, the liquid line 70 extends within the outer housing 2 and in particular also within the outer sleeve 7A of the handpiece or angle piece 7 up to a bore in the outer sleeve 7A, which is part of the liquid dispensing device 37. From this bore, the liquid 54 is released into the environment, the tool 4, and / or a treatment site. The liquid line 70 extends in particular from the valve 71 through the outer housing 2, via the first connection device 6 for detachably connecting a dental handpiece or angle piece 7, through the handpiece or angle piece 7 up to the bore of the liquid dispensing device 37.At the first connection device 6, the fluid line 70 according to this embodiment is divided into two separable sections, one of which is arranged in the handpiece or angle piece 7 and the other section in the drive and supply unit 1 of the medical, in particular dental, treatment device 100. The separability of these two sections of the fluid line 70 in the region of the first connection device 6 thus enables the handpiece or angle piece 7 to be detached from the drive and supply unit 1.

[0131] Figure 18 shows an alternative embodiment of a medical, in particular dental, treatment device 100, which can be supplied with fluid from a fluid container 11 having a flexible bag 53. This treatment device 100 is designed as a wireless, dental, endodontic treatment device. It comprises essentially the same or similar components as the above treatment devices 100, 25, 1, which are provided with the same reference numerals, so that reference is made to the above description to avoid repetition.

[0132] The handpiece or contra-angle 7 of the endodontic treatment device 100 of Figure 18 is in turn detachably connected to the drive and supply unit 1 via a first connection device 6. The first connection device 6 is provided for mechanically transmitting a rotating drive movement, which is generated by the electric motor 3 arranged in the drive and supply unit 1, to a shaft in the handpiece or contra-angle 7 and for conducting a liquid or a cooling fluid from the drive and supply unit 1 into the handpiece or contra-angle 7. To supply the components provided in the handpiece or contra-angle 7, for example the electric motor 3 and a display device 80, with electrical energy, a preferably rechargeable battery O is provided in the drive and supply unit 1.At one end of the endodontic treatment device 100 of Figure 18, a (third) connection device 9 can be seen, which can be closed by a closure 35, for example, a lid. As described above, a liquid container 11 with a flexible bag 53 can be detachably connected to this (third) connection device 9 to supply the endodontic treatment device 100 of Figure 18 with a liquid. The structure of the liquid container 11, the liquid conveyance by the pressurized gas 55 and via the liquid line 70 to the liquid discharge device 36, 37, the functioning of the valves 57, 71, and all other features of the liquid conveyance and discharge mentioned and described above can be implemented correspondingly in the endodontic treatment device 100 of Figure 18, so that to avoid repetition, reference is made to the above description.

[0133] Figure 19 shows another embodiment of a one-handed drive and supply unit 1 for implanting dental implants. The structure of the drive and supply unit 1 of Figure 19 corresponds fundamentally to that of the drive and supply units 1 of Figures 1-7, 16, and 17 and the associated descriptions, so that, to avoid repetition, reference is made to the features and functions disclosed therein. Accordingly, identical components and features in Figures 1-7, 16, 17, and 19 are provided with the same reference numerals.

[0134] As can be seen from Figure 19, the drive and supply unit 1, which can be held with one hand, has an operating element 98 that can be actuated by a user. The operating element 98 is arranged movably, in particular rotatably, on the outer housing 2 of the drive and supply unit 1. The operating element 98 is formed as part of the outer housing 2: when the handpiece or contra-angle piece 7 is separated from the drive and supply unit 1, in particular from the first connecting device 6, the operating element 98 remains on the drive and supply unit 1. The operating element 98 comprises, in particular, a rotating ring 98A that is rotatable about the central axis 28 of the coupling pin 24 and / or the gear 31, 76.As will be described in more detail below, an adjusting device 77 provided in the outer housing 2 can be actuated or adjusted by a user with the aid of the operating element 98 in order to be able to select different transmission ratios, so that the handpiece or contra-angle piece 7 connected to the first connecting device 6 can be operated at different speeds and / or torques.

[0135] Figures 20 and 21 show a sectional view through the first connection device 6 provided on the outer housing 2, the operating element 98, 98A, the adjusting device 77 for setting different gear ratios and a planetary gear 76 comprising gear 31, wherein the adjusting device 77 takes up different positions in the two figures, so that in Figure 20 the rotating drive movement generated by the electric motor 3 (see Figures 5, 6) is transmitted directly (i.e. not via the gear 31, 76) to the handpiece or contra-angle piece 7 (gear ratio 1:1), while in Figure 21 the rotating drive movement generated by the electric motor 3 is transmitted via the gear 31, 76 to the handpiece or contra-angle piece. In Figure 21 the gear ratio is therefore not equal to 1:1, in particular a reduction is effected by the planetary gear 76.Figures 20 and 21 show a drive train or shaft train 79 arranged in the outer housing 2, which connects the electric motor 3 to the first connection device 6 or extends between the electric motor 3 and the first connection device 6 in order to transmit the rotating drive movement of the electric motor 3 to the handpiece or angle piece 7. The shaft train 79 comprises at least one shaft, preferably several shafts or shaft sections 78, 78A, 78B, which are coupled to one another in a force-transmitting manner and / or can be coupled. One end of the shaft train 79 or of a shaft 78B extends into the coupling pin 24 in order to be connectable to a shaft arranged in the handpiece or angle piece 7. As can be seen from Figures 20 and 21, the shaft 78 is movable, preferably displaceable, in particular axially displaceable with respect to the central axis 28.The shaft 78 is axially displaceable relative to the gear 31, 76 and to the other shafts 78A, 78B of the shaft train 79.

[0136] The transmission 31 has a planetary gear 76 or is designed as a planetary gear 76. According to Figures 20-23, the planetary gear 76 is designed as a gear planetary gear, but it can alternatively also have a ball planetary gear. Since the structure and function of a planetary gear 76 are familiar to a person skilled in the art, this will not be discussed in detail. As can be seen in particular from Figures 20, 21, the central rolling element or sun gear 90 is arranged on the shaft train 79, in particular the shaft 78A. The shaft 78A and the sun gear 90 are set in rotation by the electric motor 3. The central rolling element 90 engages with several, for example two, rotating rolling elements or planetary gears 91B. The planetary gears 91B are rotatably arranged on a rotating carrier 91, which in particular comprises a hollow shaft 91A. The planetary gears 91 B mesh with a ring gear 92.The ring gear 92 (see Figure 23) is fixedly connected to the outer housing 2. The planetary gear 76 is designed as a reduction gear, ie, as a gear that reduces the speed of the rotating drive movement received from the electric motor 3 and, in particular, increases the torque of the rotating drive movement received from the electric motor 3.

[0137] The shaft train 79, in particular the displaceable shaft 78, extends through the hollow support 91, 91A. The displaceable shaft 78 is displaceably arranged inside the hollow shaft 91A and / or relative to the hollow support 91, 91A. Inside the rotating, hollow support 91, in particular in the hollow shaft 91A, a bushing 87 is further provided (see Figures 21, 22, 25), which is connected in a rotationally fixed manner to the hollow shaft 91A and rotates with the hollow support 91, 91A at the speed changed by the gear 31, 76. The bushing 87 has a substantially cylindrical or hollow-cylindrical shape. The shaft assembly 79, in particular the displaceable shaft 78, extends through the hollow cylindrical bushing 87. The displaceable shaft 78 is arranged displaceably inside the bushing 87 and / or relative to the bushing 87.

[0138] The adjusting device 77 is designed in such a way that it optionally couples the shaft 78 to the gear 31, 76 to set a (first) gear ratio, so that a rotating drive movement with the speed changed by the gear 31, 76 can be transmitted via the shafts 78, 78B and the first connecting device 6 to the dental handpiece or contra-angle piece 7 (reduction, see Figure 21), or decouples the shaft 78 and the gear 31, 76 to set a further (second) gear ratio, so that the rotating drive movement with the speed generated by the electric motor 3 can be transmitted via the shafts 78, 78B and the first connecting device 6 to the dental handpiece or contra-angle piece 7 (gear ratio 1:1, see Figure 20).

[0139] To selectively set the different gear ratios, the movable, displaceable shaft 78 can be moved by the adjusting device 77. To set the reducing gear ratio (reduction) according to Figure 21, the movable shaft 78 and thus also the shaft 78B are connected to the gear 31, 76 via the bushing 87 in a torque-transmitting manner, and the direct, immediate coupling and / or the direct, immediate contact between the shaft 78 and the shaft 78A is released. The rotating drive movement and / or the torque is / are thus transmitted from the shaft 78A via the gear 31, 76, the bushing 87 and the shafts 78, 78B to the handpiece or contra-angle piece 7.

[0140] To set the transmission ratio 1:1 according to Figure 20, the shaft 78 and the gear 31, 76 can be decoupled from one another by means of the adjusting device 77, in that the contact between the bushing 87 and the shaft 78 is released by moving the shaft 78 and the shaft 78 and the shaft 78A are directly coupled to one another and / or direct contact is established between the shaft 78 and the shaft 78A. The rotating drive movement and / or the torque is / are thus transmitted from the shaft train 79, bypassing the gear 31, 76 and / or from the shaft 78A, directly to the shafts 78, 78B and further to the handpiece or contra-angle piece 7.As can be seen from Figure 20, even with a gear ratio of 1:1, the sun gear 90 and the entire gear unit 31, 76 are driven. However, since the coupling between the bushing 87 and the shaft 78 is removed, the gear unit 31, 76 or the bushing 87 does not transmit any rotational movement to the shaft 78. This creates the possibility of setting different gear ratios without the planetary gear unit 76, in particular its components, such as the sun gear unit 90, the planetary gear carrier 91 with the planetary gear units 91B and / or the ring gear unit 92, having to be displaced axially - with respect to the central axis 28. The planetary gear unit 76 is thus arranged immovably in the outer housing 2.

[0141] The optional coupling between the shaft 78 and the bushing 87 or the shafts 78, 78A is effected by driver elements 81, 83 and counter-driver elements 82, 84. The shaft 78 comprises a first driver element 81, which according to the embodiment of Figures 20, 21 is designed as a recess or pin receptacle 81A (see in particular Figure 21), and a second driver element 83, which according to the embodiment of Figures 20, 21 is designed as a pin 83A. The shaft 78 and the first and second driver elements 81, 83 are fixedly connected to one another and / or can be moved together by the adjusting device 77. The pin 83A is, for example, pressed into openings 103 in the shaft 78 (see Figure 24).

[0142] The first counter-driver element 82 is provided on the shaft 78A and, according to the embodiment of Figures 20, 21, is designed as a pin 82A. The shaft 78A and the counter-driver element 82 are firmly connected to one another and / or can be set in rotation together. The pin 82A is, for example, pressed into openings in the shaft 78A. The second counter-driver element 84 is provided on the bushing 87 and, according to the embodiment of Figures 20, 21, is designed as a recess or pin receptacle 84A (see in particular Figure 20).By moving the shaft 78 and the joint movement of shaft 78, first and second driver element 81, 83, either the elements 81, 82 are coupled by the pin 82A of the shaft 78A engaging in the pin receptacle 81A of the shaft 78 (see Figure 20) or the elements 83, 84 are coupled by the pin 83A of the shaft 78 engaging in the pin receptacle 84A of the bushing 87 (see Figure 21), whereby the different transmission ratios can be set as described above.

[0143] Figure 24 shows an enlarged view of the shaft 78 and the first driver element 81 with the pin receptacle 81A. Figure 25 shows the bushing 87 and the second counter-driver element 84 with the pin receptacle 84A. Both pin receptacles 81A, 84A each have a recess 85 provided in an end face 86 of the shaft 78 or the cylindrical bushing 87. The recess 85 extends over the entire diameter of the shaft 78 or bushing 87 orthogonal to a central axis of the shaft 78 or bushing 87 and preferably intersects the central axis. The end face 86 is divided into two halves by the recess 85, each half of the end face 86 having an apex 88 from which inclined planes 89 extend in the direction of the pin receptacles 81A, 84A.If the shaft 78 is coupled to the bushing 87 or the shaft 78A without the pin 82A, 83A directly engaging the pin receptacles 81A, 84A, the pins 82A, 83A hit the inclined planes 89 and then slide on the inclined plane 89 into the recess 85, whereby a smooth engagement of the pins 82A, 83A into the recess 85 is achieved.

[0144] The adjusting device 77 comprises a link device 93 which has a link groove 94, a link block 95 and a control disc 96 with a control track 96A provided on the circumference of the control disc 96.

[0145] The link groove 94 is provided in a rotationally fixed inner sleeve 97. As can be seen particularly from Figures 22 and 23, the rotationally fixed inner sleeve 97 is formed integrally with the (cylindrical) coupling pin 24. Via a step or shoulder 104, the coupling pin 24 is connected to a central sleeve portion 97A, the outer diameter of which is larger than that of the coupling pin 24. Adjoining the end of the central sleeve portion 97A remote from the coupling pin 24 is an annular flange 97B, the outer diameter of which is larger than that of the central sleeve portion 97A. While the coupling pin 24 projects beyond the outer housing 2, in particular the operating element 98, 98A of the drive and supply unit 1, at least a part of the central sleeve section 97A and the flange 97B are covered by the outer housing 2, in particular the operating element 98, and / or received in the outer housing 2.

[0146] The link groove 94 is arranged in the central sleeve section 97A and / or at a distance from the coupling pin 24. The link groove 94 extends radially around the central axis 28 of the gear 31, 76 and / or the coupling pin 24. The link groove 94 extends obliquely offset along the central axis 28, such that one end of the link groove 94 is closer to the flange 97B or gear 31, 76 and another end of the link groove 94 is closer to the coupling pin 24. From Figure 22, it can be seen that preferably two spaced-apart, in particular opposite, link grooves 94 are provided on the rotationally fixed inner sleeve 97. In a corresponding manner, two sliding blocks 95 and two control tracks 96A provided on the circumference of the control disc 96 are provided, whereby the operability of the sliding device 93 becomes more stable and reliable.

[0147] The control disk 96 is operatively connected to the shaft 78 (see Figures 20, 21). For this purpose, the control disk 96 has a bore 99 in which the shaft 78 is received. A rolling bearing 101, in particular a ball bearing, is also arranged in the bore 99 and rotatably mounts the shaft 78 in the control disk 96. The control disk 96, the shaft 78 and the rolling bearing 101 are connected to one another in such a way that they are jointly movable, in particular displaceable, axially along the central axis 28. By providing the rolling bearing, the shaft 78 is rotatably mounted in the bore 99 of the control disk 96 and / or rotatable relative to the control disk 96. The control disk 96 is arranged in a rotationally fixed manner in the outer housing 2 and / or relative to the outer housing. On the outer circumference of the control disc 96, a control track 96A, preferably two control tracks 96A, is provided (see Figure 23).The two control tracks 96A are spaced apart from each other, in particular opposite each other. A sliding block 95 is slidably received in each control track 96A.

[0148] According to the exemplary embodiments of Figures 20-23, the at least one sliding block 95 is designed as a rotationally symmetrical body, in particular as a sphere. The sliding blocks 95 extend from the operating element 98, 98A through the sliding block groove 94 into the respective control track 96A. By actuating the operating element 98, in particular by rotating the rotating ring 98A, the at least one sliding block 95 can be guided in the sliding block groove 94 along the central axis 28. To ensure that the at least one sliding block 95 is carried along by the operating element 98 upon actuation of the operating element 98, an elongated groove or notch 105 extending along the central axis 28 is provided on the inside of the operating element 98 (see Figure 22), in which a part of the at least one sliding block 95 is received and / or guided.During its movement along the center axis 28, the at least one sliding block 95 carries the control disc 96 and the shaft 78 connected thereto with the pin 83A and the pin receptacle 81A, whereby these are also axially displaced and the respective driver elements 81, 83 and counter-driver elements 82, 84 engage with one another to set the different transmission ratios, as described above.

[0149] In order to fix a transmission ratio set by the user via the adjusting device 77 and / or the position of the adjusting device and / or the shaft 78, a locking device 102 is provided (see Figures 22 and 23). The locking device 102 is provided between the operating element 98, 98A and the rotationally fixed inner sleeve 97. The locking device 102 comprises a locking body 102A, for example a ball, preloaded with a spring element and a locking recess 102B into which the locking body 102A engages. According to Figures 22, 23, the spring element and the locking body 102A are arranged in the movable operating element 98, in particular the rotating ring 98A, in a bore in a wall of the operating element 98, 98A. The locking recess 102B is accordingly provided on the rotationally fixed inner sleeve 97, for example in the flange 97B. The locking recess 102B comprises in particular a groove 106 in the flange 97B, wherein recesses are provided at the two ends of the groove 106.As can be seen from Figures 20, 21, the operating element 98, 98A and the flange 97B are adjacent to one another and / or the operating element 98, 98A moves along the flange 97B in such a way that the locking body 102A engages in the groove 106 and that when one of the different gear ratios is set, the locking body 102A clicks into one of the recesses at the end of the groove 106. This clicking also provides the user with haptic and / or acoustic feedback that one of the gear ratios has been set. The described or illustrated embodiments serve in particular to.

[0150] Illustration of the invention. The features disclosed in one embodiment are therefore not limited to this embodiment, but can be combined individually or jointly with one or more features of one of the other embodiments.

Claims

Patent claims 1. A hand-held drive and supply unit (1) for implanting dental implants, comprising an outer housing (2) that separates the drive and supply unit (1) from the surroundings, comprising: an electric motor (3) arranged in the outer housing (2) for rotatingly driving a dental tool (4); a control device (5) arranged in the outer housing (2) for controlling the drive and supply unit (1); a first connection device (6) provided on the outer housing (2) for detachably connecting a dental handpiece or contra-angle piece (7) to the drive and supply unit (1), for mechanically transmitting a rotating drive movement generated by the electric motor (3) to a shaft in the handpiece or contra-angle piece (7), and for conducting a cooling fluid from the drive and supply unit (1) into the handpiece or contra-angle piece (7);a second connection device (8) provided on or in the outer housing (2) for detachably connecting a battery (10) for supplying the electric motor (3) with electrical energy, a third connection device (9) provided on or in the outer housing (2) for detachably connecting a cooling fluid container (11), characterized by a gear (31, 76) arranged in the outer housing (2) which is operatively connected to the electric motor (3) in order to receive the rotating drive movement generated by the electric motor (3) and to change the speed and / or the torque of the received rotating drive movement, a shaft (78) arranged in the outer housing (2) which is operatively connected to the electric motor (3) in order to transmit the rotating drive movement generated by the electric motor (3) to the dental handpiece or contra-angle piece (7) via the first connection device (6),and an adjusting device (77) arranged in the outer housing (2) for setting different transmission ratios, wherein the adjusting device (77) is designed such that it selectively couples the shaft (78) to the gear (31, 76) to set a transmission ratio, so that a rotating drive movement at the speed changed by the gear (31, 76) can be transmitted via the shaft (78) and the first connecting device (6) to the dental handpiece or contra-angle piece (7), or decouples the shaft (78) and the gear (31, 76) to set a further transmission ratio, so that the rotating drive movement at the speed generated by the electric motor (3) can be transmitted via the shaft (78) and the first connecting device (6) to the dental handpiece or contra-angle piece (7).

2. A one-handed drive and supply unit (1) according to claim 1, characterized in that the shaft (78) is displaceable relative to the gear (31, 76).

3. A drive and supply unit (1) which can be held with one hand according to claim 1 or 2, characterized in that the shaft (78) is part of a shaft train (79) which connects the electric motor (3) to the dental handpiece or contra-angle piece (7) via the first connecting device (6) for transmitting the rotating drive movement generated by the electric motor (3).

4. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims, characterized in that the shaft (78) comprises a first driver element (81) and a second driver element (83), wherein the shaft (78) and the first and second driver elements (81, 83) are jointly movable by the adjusting device (77).

5. Drive and supply unit (1) which can be held with one hand according to claim 4, characterized in that by the joint movement of the shaft (78), the first and second driver elements (81, 83) optionally the first driver element (81) is coupled to a first counter-driver element (82) or the second driver element (83) is coupled to a second counter-driver element (84), whereby the different transmission ratios can be set.

6. A one-handed drive and supply unit (1) according to claim 5, characterized in that the first driver element (81) and first counter-driver element (82) and / or the second driver element (83) and second counter-driver element (84) each have a pin (82A, 83A) and a pin receptacle (81A, 84A).

7. A hand-held drive and supply unit (1) according to claim 6, characterized in that the pin receptacle (81A, 84A) has a recess (85) which is provided in an end face (86) of the shaft (78) or a cylindrical bushing (87) connected to the gear (31, 76), the end face (86) having an apex (88) from which an inclined plane (89) extends in the direction of the pin receptacle (81A, 84A), so that the pin (82A, 83A) slides into the recess (85) on the inclined plane (89) for engagement into the recess (85).

8. A hand-held drive and supply unit (1) according to any one of the preceding claims, characterized in that the gear (31, 76) comprises a planetary gear (76).

9. Drive and supply unit (1) which can be held with one hand according to claim 8, characterized in that the planetary gear (76), in particular the components of the planetary gear (76), for example the sun gear (90), the planet gear carrier (91) with the planet gears (91 B) and the ring gear (92), is / are arranged axially immovably in the outer housing (2) with respect to the central axis (28) of the coupling pin (24) and / or the electric motor (3).

10. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims, characterized in that the adjusting device (77) comprises a link device (93) which has a link groove (94), a link block (95) and a control disc (96) with a control track (96A) provided on the circumference of the control disc (96).

11. A drive and supply unit (1) which can be held with one hand according to claim 10, characterized in that the link groove (94) is provided in a rotationally fixed inner sleeve (97), wherein the link groove (94) extends radially around the central axis (28) and obliquely offset along the central axis (28).

12. A drive and supply unit (1) which can be held with one hand according to claim 10 or 11, characterized in that the control disc (96) is operatively connected to the shaft (78), and the sliding block (95) extends from an operating element through the sliding block groove into the control track (96A), so that by actuating the operating element (98) the sliding block (95) can be guided in the sliding block groove (94) along the central axis (28), whereby the control disc (96) and the shaft (78) connected thereto can be displaced axially along the central axis (28) to set the different transmission ratios.

13. A hand-held drive and supply unit (1) according to any one of claims 10 to 12, characterized in that the control disc (96) has a bore (99) in which the shaft (78) and a rolling bearing (101) are received, such that the rolling bearing (101) rotatably supports the shaft (78) in the control disc (96).

14. A drive and supply unit (1) that can be held with one hand according to one of the preceding claims, characterized in that the adjusting device (77) can be adjusted via an operating element (98) that can be actuated by a user, wherein the operating element (98) is movably arranged on the outer housing (2) of the drive and supply unit (1), and wherein the operating element (98) preferably comprises a rotary ring (98A) or a slide, which are rotatable about the central axis (28) of the coupling pin (24) and / or of the electric motor (3).

15. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 12 - 14, characterized by a locking device (102) provided between the operating element (98) which can be actuated by the user and the rotationally fixed inner sleeve (97), which locking device is designed to fix the operating element (98) in a position in which one of the different transmission ratios is set.

16. Medical, in particular dental, treatment device (100, 25, 1), comprising: an outer housing (2) which separates the medical, in particular dental, treatment device (1) from the environment, a drive device (3) arranged in the outer housing (2) for driving a tool (4) connectable to the medical, in particular dental, treatment device, a control device (5) arranged in the outer housing (2) for controlling the medical, in particular dental, treatment device (1), a liquid dispensing device (36, 37) designed to dispense a liquid (54) from the medical, in particular dental, treatment device (100, 25, 1) into the environment, and a liquid container (11) which holds the liquid dispensable by the liquid dispensing device (36, 37) and is detachably connectable to a connection device (9) provided on or in the outer housing (2), wherein the liquid container (11) has an outer wall (51) which delimits a container interior (52) of the liquid container (11) from the environment, characterized in that the liquid container (11) further comprises: a flexible bag (53) accommodated in the container interior (52) with a bag volume (56) in which the liquid (54) is accommodated, a pressurized gas (55),which is provided in the container interior (52) but outside the bag volume (56), and a valve (57) with a valve tube (58) which is in fluid communication with the bag volume (56), wherein the valve (57) is switchable between a closed position in which the liquid (54) held in the bag volume (56) cannot escape from the flexible bag (53), and an open position in which the liquid (54) held in the bag volume (56) can escape from the flexible bag (53) through the valve tube (58), wherein in the open position the pressure exerted by the pressurized gas (55) on the flexible bag (53) forces the liquid (54) out of the flexible bag (53) into the valve tube (58), and a connector (60) which connects the liquid container (11) to the medical, in particular dental, treatment device (100, 25, 1) connects in such a waythat the liquid (54) can be conveyed from the flexible bag (53) and through the valve tube (58) into a liquid line (70) of the medical, in particular dental, treatment device (100, 25, 1).

17. Medical, in particular dental, treatment device (100, 25, 1) according to claim 16, characterized by an actuating element (71) provided in the outer housing (2) of the medical, in particular dental, treatment device (100, 25, 1) which controls the release of the liquid (54).

18. Medical, in particular dental, treatment device (100, 25, 1) according to claim 17, characterized in that the actuating element (71) can be controlled by the control device (5) arranged in the outer housing (2) and via a human-machine interface (26) provided on the medical, in particular dental, treatment device (100, 25, 1) or by an interface (72) arranged remotely from the outer housing (2), for example by a foot control.

19. Medical, in particular dental, treatment device (100, 25, 1) according to one of the preceding claims 16 - 18, characterized in that the connector (60) has a connector body (61) on which a first connecting element (62) for connecting the connector (60) to the outer wall (51) of the liquid container (11) and a second connecting element (63) for connecting to the medical, in particular dental, treatment device (100, 25, 1) are provided.

20. Medical, in particular dental, treatment device (100, 25, 1) according to claim 19, characterized in that no adjusting element for adjusting the valve (57) of the liquid container (11) between the closed and the open position is provided on the connector body (61).

21. Medical, in particular dental, treatment device (100, 25, 1) according to one of the preceding claims 16 - 20, characterized in that the liquid container (11) does not comprise a finger push button or finger rotary knob for setting the valve (57) of the liquid container (11) between the closed and the open position.

22. Medical, in particular dental, treatment device (100, 25, 1) according to one of the preceding claims 16 - 21, characterized in that the connector (60) is arranged at an end of the liquid container (11) at which the valve (57) of the liquid container (11) is provided, wherein in particular the connector body (61) has a passage (64) into which the valve tube (58) and / or a liquid line (70) of the medical, in particular dental, treatment device (100, 25, 1) extends.

23. Medical, in particular dental, treatment device (100, 25, 1) according to one of the preceding claims 16 - 22, characterized in that the medical, in particular dental, treatment device (100, 25, 1) is designed as a wireless treatment device without a line connection to an energy and fluid source arranged outside the outer housing (2), in particular as a wireless drive and supply unit (1) for implanting dental implants.

24. A liquid container (11) which can be connected to a medical, in particular dental, treatment device (100, 25, 1) in order to dispense a liquid (54) contained in the liquid container (11) to the medical, in particular dental, treatment device (100, 25, 1), wherein the liquid container (11) comprises: an outer wall (51) which delimits a container interior (52) of the liquid container (11) from the environment, and is characterized by a flexible bag (53) accommodated in the container interior (52) with a bag volume (56) in which the liquid (54) to be dispensed to the medical, in particular dental, treatment device (100, 25, 1) can be accommodated, a pressurized gas (55) which is provided in the container interior (52) but outside the bag volume (56), and a valve (57) with a valve tube (58) which is in fluid communication with the bag volume (56),wherein the valve (57) is adjustable between a closed position in which the liquid (54) held in the bag volume (56) does not flow out of the flexible bag (53), can escape, and an open position in which the liquid (54) held in the bag volume (56) can escape from the flexible bag (53) through the valve tube (58), wherein in the open position the pressure exerted by the pressurized gas (55) on the flexible bag (53) drives the liquid (54) from the flexible bag (53) into the valve tube (58), a connector (60) which connects the liquid container (11) to the medical, in particular dental, treatment device (100, 25, 1) in such a way that the liquid (54) can be conveyed from the flexible bag (53) and through the valve tube (58) into a liquid line (70) of the medical, in particular dental, treatment device (100, 25, 1), wherein the connector (60) has a connector body (61),on which a first connecting element (62) for connecting the connector (60) to the outer wall (51) of the liquid container (11) and a second connecting element (63) for connecting to the medical, in particular dental, treatment device (100, 25, 1) are provided, wherein no adjusting element for adjusting the valve (57) between the closed and the open position is provided on the connector body (61).

25. Liquid container (11) according to claim 24, characterized by a mechanical and / or magnetic second connecting element (63).

26. Liquid container (11) according to claim 24 or 25, characterized in that the liquid container (11) does not comprise a finger push button or finger rotary knob for setting the valve (57) between the closed and the open position.

27. Liquid container (11) according to one of the preceding claims 24 - 26, characterized in that the connector (60) is arranged at an end of the liquid container (11) at which the valve (57) of the liquid container (11) is provided.

28. Liquid container (11) according to claim 27, characterized in that the connector body (61) has a passage (64) into which the valve tube (58) and / or a liquid line (70) of the medical, in particular dental, treatment device (100, 25, 1) extends.

29. Liquid container (11) according to one of the preceding claims 24 - 28, characterized in that the liquid (54) comprises water, an aqueous solution, for example a saline solution, an anesthetic, a medicinal agent and / or an indicator liquid.

30. Use of a liquid container (11) comprising: an outer wall (51) which separates a container interior (52) of the liquid container (11) from the environment, a flexible bag (53) arranged in the container interior (52) with a bag volume (56) in which a liquid (54) is accommodated, a pressurized gas (55) which is provided in the container interior (52) but outside the bag volume (56), and a valve (57) with a valve tube (58) which is in fluid communication with the bag volume (56), wherein the valve (57) can be switched between a closed position in which the Bag volume (56) held liquid (55) cannot escape from the flexible bag (53), and an open position in which the liquid (54) held in the bag volume (56) can escape from the flexible bag (53) through the valve tube (58), wherein in the open position the pressure exerted by the pressurized gas (55) on the flexible bag (53) forces the liquid (54) out of the flexible bag (53) into the valve tube (58), and a connector (60) connecting the liquid container (11) to a medical, in particular dental, treatment device (100, 25, 1) in such a way that the liquid (54) can be conveyed from the flexible bag (53) and through the valve tube (58) into a liquid line (70) of the medical, in particular dental, treatment device (100, 25, 1), in particular using a Liquid container (11) according to one of the preceding claims 24 - 29,as a liquid source of a medical, in particular dental, treatment device (100, 25, 1)., 31. A hand-held drive and supply unit (1) for implanting dental implants, comprising an outer housing (2) which separates the drive and supply unit (1) from the surroundings, characterized by: an electric motor (3) arranged in the outer housing (2) for rotatingly driving a dental tool (4), a control device (5) arranged in the outer housing (2) for controlling the drive and supply unit (1), a first connection device (6) provided on the outer housing (2) for detachably connecting a dental handpiece or angle piece (7) to the drive and supply unit (1), for mechanically transmitting a rotating drive movement generated by the electric motor (3) to a shaft in the handpiece or angle piece (7), and for conducting a liquid or cooling fluid from the drive and supply unit (1) into the handpiece or angle piece (7),a second connection device (8) provided on or in the outer housing (2) for detachably connecting a battery (10) for supplying the electric motor (3) with electrical energy, and a third connection device (9) provided on or in the outer housing (2) for detachably connecting a liquid container or cooling fluid container (11), wherein the first, second and third connection devices (6, 8, 9) are independent, separate connection devices, and wherein a liquid container (11) is connectable or connected to the third connection device (9), said liquid container comprising: an outer wall (51) which delimits a container interior (52) of the liquid container (11) from the environment, a flexible bag (53) arranged in the container interior (52) with a bag volume (56) in which a liquid (54) is received, a pressurized gas (55) provided in the container interior (52) but outside the bag volume (56), and a valve (57) with a valve tube (58) that is in fluid communication with the bag volume (56), wherein the valve (57) is switchable between a closed position, in which the liquid (54) held in the bag volume (56) cannot escape from the flexible bag (53), and an open position, in which the liquid (54) held in the bag volume (56) can escape from the flexible bag (53) through the valve tube (58), wherein in the open position, the pressure exerted by the pressurized gas (55) on the flexible bag (53) drives the liquid (54) from the flexible bag (53) into the valve tube (58), and a connector (60) that connects the liquid container (11) to the drive and supply unit (1) connects in such a waythat the liquid (54) can be conveyed from the flexible bag (53) and through the valve tube (58) into a liquid line (70) of the drive and supply unit (1).

32. A drive and supply unit (1) which can be held in one hand according to claim 31, characterized in that the first connecting device (6) for the detachable connection of a dental handpiece or angle piece (7) and at least the second connecting device (8) or the third connecting device (9), preferably the second connecting device (8) for the detachable connection of a battery (10), are arranged at opposite ends (2C, 2D) of the drive and supply unit (1).

33. A drive and supply unit (1) which can be held with one hand according to claim 32, characterized in that the first connecting device (6) for the detachable connection of a dental handpiece or angle piece (7) and optionally the second connecting device (8) or the third connecting device (9), preferably the second connecting device (8) for the detachable connection of a battery (10), are arranged in a sectional plane (14) through the drive and supply unit (1) which extends through the opposite ends (2C, 2D) of the drive and supply unit (1).

34. Drive and supply unit (1) which can be held with one hand according to claim 33, characterized in that the other connection device of the second or third connection device (8, 9), preferably the third connection device (9) for detachably connecting a liquid container or cooling fluid container (11), is arranged offset from and / or outside the cutting plane (14).

35. Drive and supply unit (1) which can be held with one hand according to claim 34, characterized in that the second or third connecting device (8, 9) arranged offset to and / or outside the cutting plane (14) is provided between the two connecting devices (6, 9; 6, 8) arranged in the cutting plane (14).

36. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 31 - 35, characterized by a central plane (15) extending through the drive and supply unit (1), wherein the first connecting device (6) is arranged on a first side (16) of the central plane (15) and the second and third connecting devices (8, 9) are arranged on another, second side (17) of the central plane (15).

37. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 31 - 36, characterized in that the electric motor (3) is arranged adjacent to the first connection device (6) and / or in alignment with the first connection device (6).

38. A drive and supply unit (1) which can be held with one hand according to claim 36 or 37, characterized in that the electric motor (3) with the first connection device (6) is arranged on the first side (16) of the central plane (15).

39. A hand-held drive and supply unit (1) according to claim 36, 37 or 38, characterized in that the electric motor (3) is arranged with respect to the second connection device (8) and / or a battery (10) connected to the second connection device (8) in such a way that the center plane (15) extends between the electric motor (3) and the second connection device (8) and / or the battery (10) connected to the second connection device (8).

40. A hand-held drive and supply unit (1) according to any one of the preceding claims 31 - 39, characterized in that the control device (5) for controlling the drive and supply unit (1) has a circuit board (18) which is arranged between the electric motor (3) and the second connection device (8) and / or a battery (10) connected to the second connection device (8).

41. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 31 - 40, characterized in that the second connection device (8) has an opening (19) and a, preferably cylindrical, receptacle (20) into which the battery (10) can be inserted.

42. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 31 - 41, characterized in that the third connection device (9) has an opening (21) and a, preferably cylindrical, receptacle (22) into which the liquid container or cooling fluid container (11) can be inserted.

43. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 31 - 42, characterized in that the third connecting device (9) has a fluid-transmitting interface (23) for connection to a liquid container or cooling fluid container (11), via which liquid (54) from the liquid container (11) or cooling fluid from the cooling fluid container (11) can be transferred into the drive and supply unit (1).

44. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 31 - 43, characterized in that the first connecting device (6) has a coupling pin (24) onto which the handpiece or angle piece (7) can be plugged in such a way as to transmit fluid and drive force.

45. Dental implantation device (25), characterized by a drive and supply unit (1) according to one of the preceding claims 31 - 44, which can be held with one hand, a handpiece or angle piece (7), a battery (10) and a liquid container or cooling fluid container (11).

46. ​​A hand-held drive and supply unit (1) for implanting dental implants, comprising an outer housing (2) which separates the drive and supply unit (1) from the surroundings, characterized by: an electric motor (3) arranged in the outer housing (2) for rotatingly driving a dental tool (4); a control device (5) arranged in the outer housing (2) for controlling the drive and supply unit (1); a first connection device (6) provided on the outer housing (2) for detachably connecting a dental handpiece or contra-angle piece (7) to the drive and supply unit (1), for mechanically transmitting a rotating drive movement generated by the electric motor (3) to a shaft in the handpiece or contra-angle piece (7), and for conducting a cooling fluid from the drive and supply unit (1) into the handpiece or contra-angle piece (7);a second connection device (8) provided on or in the outer housing (2) for detachably connecting a battery (10) for supplying the electric motor (3) with electrical energy, and a third connection device (9) provided on or in the outer housing (2) for detachably connecting a cooling fluid container (11), wherein the first, second and third connection devices (6, 8, 9) are independent, separate connection devices.

47. A hand-held drive and supply unit (1) according to claim 46, characterized in that the first connecting device (6) for releasably connecting a dental handpiece or angle piece (7) and at least the second connecting device (8) or the third connecting device (9), preferably the second connecting device (8) for releasably connecting a battery (10), are arranged at opposite ends (2C, 2D) of the drive and supply unit (1).

48. Drive and supply unit (1) which can be held with one hand according to claim 47, characterized in that the first connecting device (6) for the detachable connection of a dental handpiece or angle piece (7) and optionally the second connecting device (8) or the third connecting device (9), preferably the second connecting device (8) for the detachable connection of a battery (10), in a sectional plane (14) through the drive and supply unit (1) which extends through the opposite ends (2C, 2D) of the drive and supply unit (1).

49. Drive and supply unit (1) which can be held with one hand according to claim 48, characterized in that the other connection device of the second or third connection device (8, 9), preferably the third connection device (9) for detachably connecting a cooling fluid container (11), is arranged offset from and / or outside the cutting plane (14).

50. Drive and supply unit (1) which can be held with one hand according to claim 49, characterized in that the second or third connecting device (8, 9) arranged offset to and / or outside the cutting plane (14) is provided between the two connecting devices (6, 9; 6, 8) arranged in the cutting plane (14).

51. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 46 - 50, characterized by a central plane (15) extending through the drive and supply unit (1), wherein the first connecting device (6) is arranged on a first side (16) of the central plane (15) and the second and third connecting devices (8, 9) are arranged on another, second side (17) of the central plane (15).

52. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 46 - 51, characterized in that the electric motor (3) is arranged adjacent to the first connection device (6) and / or in alignment with the first connection device (6).

53. A drive and supply unit (1) which can be held with one hand according to claim 51 or 52, characterized in that the electric motor (3) with the first connection device (6) is arranged on the first side (16) of the central plane (15).

54. A hand-held drive and supply unit (1) according to claim 51, 52 or 53, characterized in that the electric motor (3) is arranged in relation to the second connection device (8) and / or a battery (10) connected to the second connection device (8) in such a way that the center plane (15) extends between the electric motor (3) and the second connection device (8) and / or the battery (10) connected to the second connection device (8).

55. A hand-held drive and supply unit (1) according to any one of the preceding claims 46 - 54, characterized in that the control device (5) for controlling the drive and supply unit (1) has a circuit board (18) which is arranged between the electric motor (3) and the second connection device (8) and / or a battery (10) connected to the second connection device (8).

56. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 46 - 55, characterized in that the second connection device (8) has an opening (19) and a preferably cylindrical receptacle (20) into which the battery (10) can be inserted.

57. A drive and supply unit (1) which can be held with one hand according to one of the preceding claims 46 - 56, characterized in that the third connection device (9) has an opening (21) and a, preferably cylindrical, receptacle (22) into which the cooling fluid container (11) can be inserted.

58. A hand-held drive and supply unit (1) according to any one of the preceding claims 46 - 57, characterized in that the third connecting device (9) has a fluid-transmitting interface (23) for connection to a cooling fluid container (11), via which cooling fluid can be transferred from the cooling fluid container (11) into the drive and supply unit (1).

59. Drive and supply unit (1) which can be held with one hand according to one of the preceding claims 46 - 58, characterized in that the first connecting device (6) has a coupling pin (24) onto which the handpiece or angle piece (7) can be plugged in a way that transmits fluid and drive force.

60. Dental implantation device (25), characterized by a drive and supply unit (1) according to one of the preceding claims 46 - 59, which can be held with one hand, a handpiece or angle piece (7), a battery (10) and a cooling fluid container (11).

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