Multi-operating voltage electric machine

Abstract

The invention relates to an electric machine having a machine winding circuit for operating an electrosurgical instrument, having exactly one machine platform, which is designed and constructed for operating the machine in a first operating voltage and in a second operating voltage which differs from the first operating voltage, and having a circuit, preferably a delta connection or a star connection, which is formed by three phases each having one phase coil, and at least one phase coil of which is formed from N > 1 single coils which are connected to one another, wherein the N single coils of each phase coil are connected in parallel in the first operating voltage and are connected in series in the second operating voltage, and each phase coil is provided with a switch between the first and second operating voltage by means of at least one short-circuit mechanism.

Description

Technical Field

[0001] This disclosure relates to a motor having a motor winding circuit for operating electrosurgical instruments, having exactly one motor platform. Background Technology

[0002] Surgical electric motor systems can be divided into two drive levels or operating voltage levels. In one of these levels, the system operates using a battery, while in the other, the system has a power connector connected to a network to operate the motor and, consequently, the electrosurgical instruments connected to it. In this case, a voltage of 9.6 to 14 volts is provided for systems operating using a battery, and a voltage of 36 to 48 volts is provided for systems operating using a power connector or network.

[0003] It is well known that existing technologies include using a separate motor platform with approximately 12 volts for battery-powered systems and a separate motor platform with approximately 36 volts for systems powered by the power grid. Because of the use of two different motor platforms, it is not flexible to operate the same surgical instrument using a single battery or power connector.

[0004] For various reasons, it is necessary to integrate two operating voltage levels onto a single motor platform. This firstly brings advantages in terms of manufacturing technology, cost, and approvals, and secondly, it brings benefits to the user.

[0005] However, in known existing technologies, integrating two motor platforms into a single unified motor platform has several drawbacks. In the first case, where the battery-powered system is operated at 36 volts, the result is high equipment weight and large size. This is unacceptable to users, as it significantly complicates delicate and prolonged operations.

[0006] In the second scenario, where the system operating using the power connector is reduced to 12 volts, the result is a very unfavorable motor design. In particular, a high-speed drive, such as one exceeding 80,000 revolutions per minute, is also unacceptable to the user in this second scenario due to the resulting high heat dissipation.

[0007] Furthermore, in the prior art, only the star-delta conversion is known. However, this only achieves the ability to operate a motor in two different speed and power ranges under the same operating voltage.

[0008] Therefore, for example, DE 10 2013 009 036A1 relates to a drive unit for a crushing device, the drive unit having a star / delta convertible motor, a drive converter for adjusting or controlling physical quantities of the motor, and a control unit, wherein a conversion device is provided in the drive unit to enable the star / delta conversion, wherein the position of the conversion device is selected by the control unit, and the control unit takes into account at least one variable measured in the drive unit for this purpose.

[0009] EP 3 400 645A1 describes a switching device having at least one electrical switch and configured to connect motor windings in a star or delta configuration depending on the switching position.

[0010] Furthermore, the Daland motor is well-known in the prior art. Here, by switching the windings from a "delta-star" to a "double-star" configuration, a motor can operate at the same operating voltage within two different speed and power ranges. In other words, the Daland motor is a circuit variant designed for switching between different speeds.

[0011] Therefore, two independent and different motor platforms have been provided to date. Compared with a unified motor platform, this is disadvantageous due to higher manufacturing costs, development costs, approval costs, and expenses, as well as poorer applicability among users and a greater workload in motor data acquisition, motor data evaluation, and integration into the IomT ("Internet of Medical Things," that is, medical devices and tools connected to relevant IT systems via the Internet).

[0012] In addition, known variations in the prior art can only control the operating voltage ratio of 1:2 or √3, that is, the ratio of the operating power supply using a battery to the operating voltage using the grid after switching between two operating possibilities. Summary of the Invention

[0013] Therefore, the object of this invention is to eliminate or at least reduce the problems known in the prior art. In particular, the object of this invention is to provide a motor with a unified motor platform that operates stably and ideally whether powered by a battery or by the mains.

[0014] In other words, the aim is to provide a motor designed to operate equally well with both operating voltages. The motor characteristics should be identical with both operating voltages, thus allowing for a common permissible strategy for both operating voltage levels. Here, the size of the motor and the user's or operator's handling of the motor should not negatively impact its performance.

[0015] This objective is achieved by the motor winding circuit of the motor according to the invention for operating electrosurgical instruments.

[0016] A motor having a motor winding circuit for operating electrosurgical instruments has exactly one motor platform. This motor platform is configured and constructed for operating the motor at a first operating voltage and a second operating voltage different from the first operating voltage. Furthermore, a circuit, preferably a delta-connected circuit or a star-connected circuit, is provided on the motor platform, consisting of three phases, each having a phase coil, and wherein at least one phase coil is composed of N > 1 interconnected single-unit coils.

[0017] The above objective is achieved by the following method: in the motor winding circuit according to the above viewpoint, N individual coils of each phase coil are connected in parallel in the first operating voltage, while N individual coils of each phase coil are connected in series in the second operating voltage, and each phase coil is provided with switching between the two operating voltages through at least one short-circuit mechanism.

[0018] In other words, this means that by short-circuiting different potentials, the motor can operate under different operating voltages while maintaining the same motor characteristics and values. Therefore, it is proposed that the connection of N individual coils be switched from a series circuit to a parallel circuit, or vice versa, by means of at least one short-circuit mechanism, in order to obtain the corresponding necessary first or second operating voltage for battery power or grid power supply.

[0019] Its advantages are: the motor platform for both operating systems—battery-powered and grid-powered—is constructed identically, and no undesirable components such as switches or electronic parts are needed for switching between battery-powered and grid-powered systems or vice versa. Furthermore, the invention is advantageous in both star and delta-connected configurations.

[0020] An exemplary implementation can be achieved in a battery-powered system, for example, with a delta connection, preferably using a wire diameter of 0.355 mm. In this case, each phase coil consists of three parallel individual coils, each with thirteen windings (each phase coil has a total of 39 windings) and outputs a 12-volt voltage. In a corresponding grid-powered system, an exemplary implementation also uses a delta connection, preferably with a wire diameter of 0.355 mm, and each phase coil has three individual coils, each with thirteen windings (each phase coil has a total of 39 windings), which are connected in series and output a 36-volt voltage.

[0021] Preferably, each phase coil has N individual coils, and the ratio of a first operating voltage, preferably 12 volts, for operating the motor using a battery to a second operating voltage, preferably 36 volts, for operating the motor via a power connector, is 1:N. Particularly preferably, each phase coil has three individual coils, and the ratio of the first operating voltage to the second operating voltage is 1:3. Alternatively, each phase coil preferably has two individual coils, and the ratio of the first operating voltage to the second operating voltage is 1:2. Furthermore, it is preferred that each phase coil has four or more individual coils, and the ratio of the first operating voltage to the second operating voltage is 1:4, 1:5, etc.

[0022] It is advantageous if the at least one short-circuit mechanism is constructed as a passive component. This allows for the simplest form of technology transfer by assembling a single passive component. Furthermore, using such a passive component has the advantage that it is also suitable for application in medical technology and can undergo appropriate cleaning, sterilization, and processing procedures.

[0023] Furthermore, preferably, the at least one short-circuit mechanism is mounted on the first embedded plate, and the short-circuit mechanism is used to short-circuit N individual coils as follows, or to interrupt the connection between the N individual coils as follows, i.e., the N individual coils are connected in parallel to each other, for operating the motor in the first operating voltage. It is understood that several times, preferably twice, the number of individual coils with short-circuit mechanisms are mounted on the first embedded plate. In other words, this means that, according to a preferred embodiment, two short-circuit mechanisms are used for each phase, i.e., every three individual coils, when switching from the second operating voltage to the first operating voltage. In contrast, according to a preferred embodiment, only one short-circuit mechanism is used for each phase coil, i.e., every three individual coils, when (if necessary) driven using the second operating voltage.

[0024] The at least one short-circuit mechanism is mounted on the second embedded plate. It is advantageous to use this short-circuit mechanism to either interrupt the connection between N individual coils or to short-circuit the individual coils, i.e., to connect the individual coils in series, for operating the motor at the second operating voltage. It is understandable that several times, preferably twice, the number of individual coils with the short-circuit mechanism are mounted on the second embedded plate.

[0025] Furthermore, preferably, the first embedded plate is positioned and constructed between the motor and the battery. The advantage is that the user only needs to mechanically insert the first embedded plate to switch from grid power to battery power, that is, from a preferred 36-volt operating voltage to a 12-volt operating voltage. Therefore, to achieve the correspondingly lower operating voltage, the first embedded plate must be connected intermediaries. This can be done separately by the user, or the first embedded plate can be integrated into the lower power supply. A motor that has previously only been used in grid-powered applications can now operate in battery-powered applications without any additional modifications or operations by the user. Conversely, it is also possible to choose to run a grid (cable) drive using a battery.

[0026] It is advantageous if the second embedded panel is configured and constructed to be embedded between the motor and the power supply connector. The advantage is that the user only needs to mechanically insert the second embedded panel to switch from battery power to grid power, that is, from a preferred 12-volt operating voltage to a 36-volt operating voltage. Therefore, to achieve the correspondingly higher operating voltage, the second embedded panel must be connected intermediaryly. This can be done separately by the user, or the second embedded panel may be integrated into the higher power supply. A motor that has previously only been used in battery-powered situations can now operate in grid-powered situations without any additional modifications or operations by the user. Conversely, it is also possible to choose to run a battery-powered device using the grid (cable).

[0027] It is important to note that, based on the motor winding circuit, which consists of three individual coils integrated into the motor or mounted on the side of the motor platform facing the motor, an embedded plate is not used in the case of grid power supply. Without an embedded plate, the individual coils are already securely connected in series, and with the insertion of an embedded plate, the series circuit is transformed into a parallel circuit by means of a short-circuit mechanism located on it, ultimately allowing operation using a single battery.

[0028] As an alternative, the three individual coils can be mounted on the motor platform as follows: an embedded disk has been used for the series circuit, and the individual coils are connected accordingly by a short-circuit mechanism. This embedded disk is replaced when switching to battery power.

[0029] Furthermore, depending on the specific design specifications for different motor types, simply achieving the desired connection by short-circuiting the lower voltage variant may not be sufficient. In this case, it is necessary to additionally disconnect the wiring connection for the higher operating voltage. This is achieved by providing a second embedded panel for operating at the higher voltage.

[0030] Furthermore, it is advantageous if the motor platform has four protruding conductors in each phase, which point towards the battery or power connector and can be inserted into the short-circuit mechanism.

[0031] Furthermore, it is advantageous if the connection provided by the first or second embedded plate is electronically activated or deactivated by the corresponding connected motor control system. This eliminates the need for manual insertion or removal of the first or second embedded plate.

[0032] Preferably, the motor platform is configured and constructed such that the motor characteristics and characteristic values ​​are identical during operation using two different operating voltages, first and second. This means that parameters such as speed or torque are the same regardless of whether the motor is powered by a battery or by the mains.

[0033] Furthermore, the present invention relates to a motor platform supporting a complete motor winding circuit for operating electrosurgical instruments, having a circuit, preferably a delta-connected circuit or a star-connected circuit, comprising three phases, each having a phase coil, wherein at least one phase coil is composed of N > 1 interconnected individual coils, wherein in a first operating voltage, the N individual coils of each phase coil are connected in parallel, and in a second operating voltage, the N individual coils of each phase coil are connected in series, and each phase coil is provided with switching between the first and second operating voltages via at least one short-circuit mechanism. It should be noted that in this case, the motor platform can be combined with the above-described concept.

[0034] Furthermore, the present invention relates to a system having a motor and motor winding circuit according to any of the foregoing views, wherein the motor is configured and constructed to operate using two different power sources.

[0035] Preferably, the primary power source is an energy storage device, more preferably a battery. This battery consists of three battery cells with a voltage of 3 to 4 volts, providing a total voltage of 12 ± 2 volts to the motor to be driven. Such an energy storage device is primarily used for operating larger surgical instruments. The advantage of using three battery cells is that these cells are not too large or heavy for use with surgical instruments, and also provide a sufficiently high voltage to drive a motor with adequate power. Furthermore, since preparation is absolutely necessary, the time between two surgeries / uses is long enough to ensure that the energy storage device can be charged. Utilizing a higher voltage conversion would not be suitable due to size or weight constraints.

[0036] Preferably, the second power supply is a controller connected to the power grid, providing 36 to 39 volts to the motor to be driven. In this case, it is advantageous to have a power supply close to 40 volts, from which the standards for airflow and leakage current will increase. The increased airflow and leakage current, and therefore 40 volts or higher, will simultaneously mean a larger motor, thus making surgical instruments heavier and less convenient to use. This is particularly important in minor orthopedic surgeries, such as neurosurgery, where a second power supply is provided for intraoperative applications. The aforementioned first power supply is already too large and heavy for this application and will be in the operator's field of vision during use. Furthermore, it is preferable that the voltage be as high as possible, because this results in lower current, allowing the use of thinner cables. Another advantage of a second power supply close to 40 volts is that control freedom is greater below 40 volts than above 40 volts. This means that higher voltages are more dangerous for the patient, therefore voltages below the so-called "safe voltage"—especially for insulation—are advantageous / easier to achieve.

[0037] Furthermore, preferably, the above system is sterilizable. Therefore, adequate insulation is required, which is more easily achieved at voltages below 40 volts.

[0038] In summary, the present invention provides a motor winding circuit that enables the operation of a motor using two different operating voltages. However, the electromechanical characteristics and mechanical output values ​​remain unchanged under both operating voltage conditions. Therefore, the same motor can be selectively operated via the power grid or a battery in the same surgical application. Attached Figure Description

[0039] Figure 1 This is a diagram showing the delta connection between a motor winding circuit and the second operating voltage.

[0040] Figure 2 This is a diagram showing a motor winding circuit connected in a delta configuration to the first operating voltage.

[0041] Figure 3 This is a diagram showing a motor winding circuit connected in a star configuration to a second operating voltage.

[0042] Figure 4 This is a diagram showing a motor winding circuit connected in a star configuration to the first operating voltage.

[0043] Figure 5 It is based on Figure 4 The diagram shown is a simplified representation of the connection of two short-circuit mechanisms 9, used for driving with the first operating voltage;

[0044] Figure 6 It is based on Figure 3 The diagram shown is a simplified representation of the connection of two short-circuit mechanisms 9, used for driving with a second operating voltage;

[0045] Figure 7 This is an exploded view of a motor having a first operating voltage and a first embedded disk;

[0046] Figure 8 This is an exploded view of a motor with a second operating voltage and a second embedded disk;

[0047] Figure 9 It is a diagram of the motor and its motor platform; and

[0048] Figure 10 This is a diagram of a motor winding circuit with three individual coils of a phase coil in both grid power and battery power supply.

[0049] Wherein: 1: Motor winding circuit; 2: Motor; 3: Motor platform; 4: First operating voltage; 5: Second operating voltage; 6: Phase; 6a: Phase input terminal; 6b: Phase output terminal; 7: Phase coil; 8: Individual coil; 9: Short-circuit mechanism; 10: Battery; 11: Power connector; 12: First embedded plate; 13: Second embedded plate; 14: Protruding conductor; 15: Motor support side; 16: Phase hole.

[0050] In the accompanying drawings, the same reference numerals denote the same or at least equivalent parts and components. In this regard, it is appropriate to omit repetitive and redundant descriptions of such parts and components. Detailed Implementation

[0051] The invention will now be described in detail with reference to the accompanying drawings, using a preferred embodiment. For clarity, only one phase coil 7 is shown in the drawings, replaced by a corresponding single-unit coil 8.

[0052] Figure 1 This is a diagram of a motor winding circuit 1 connected in a delta configuration to the second operating voltage 5. Figure 1On the left, a triangular connection well-known in the prior art can be seen. This triangular connection consists of three phases 6, each having a phase coil 7. According to a preferred embodiment of the invention, each of the three phase coils 7 is replaced by three individual coils 8.

[0053] exist Figure 1 On the right, you can see three individual coils 8. The three individual coils 8 are connected in series between a phase input terminal 6a and a phase output terminal 6b. Figure 1 The arrow shown on the upper right indicates the direction of the current.

[0054] Such a motor winding circuit 1 is set up for grid-connected operation and has the following optimal configuration for the second operating voltage 5:

[0055] Magnetic flux φ = constant Voltage U (e.g., 36 volts) Number of turns N Coil current I Wire cross-section A impedance R

[0056] Table 1

[0057] Figure 2 This is a diagram of a motor winding circuit 1 connected in a delta configuration to the first operating voltage 4. Figure 2 On the left, a triangular connection well-known in the prior art can be seen. This triangular connection consists of three phases 6, each having a phase coil 7. According to a preferred embodiment of the invention, each of the three phase coils 7 is replaced by three individual coils 8.

[0058] Figure 2 The right side roughly corresponds to Figure 1 On the right side, the difference is that the two short-circuit mechanisms 9 short-circuit the three series-connected individual coils 8 so that the three individual coils 8 are now connected in parallel between the phase input terminal 6a and the phase output terminal 6b. Figure 2 The arrow shown on the upper right indicates the direction of the current again.

[0059] Such a motor winding circuit 1 is set up for battery power supply and has the following optimal configuration for the first operating voltage 4:

[0060] Magnetic flux φ = constant Voltage U / 3 (e.g., 12 volts) Number of turns N / 3 Coil current 3I Wire cross-section 3A impedance R / 3

[0061] Table 2

[0062] Figure 3 This is a diagram of a motor winding circuit 1 connected in a star configuration to the second operating voltage 5. Figure 3 On the left, a star connection well-known in the prior art can be seen. This star connection consists of three phases 6, each having a phase coil 7. According to a preferred embodiment of the invention, each of the three phase coils 7 is replaced by three individual coils 8, as in... Figure 1As shown in the diagram.

[0063] exist Figure 3 On the right, three individual coils 8 can be seen. The three individual coils 8 are connected in series between the phase input terminal 6a and the phase output terminal 6b. Figure 3 The arrow shown on the upper right indicates the direction of the current.

[0064] Such a motor winding circuit 1 is configured for grid power supply and has the same optimal configuration as in Table 1 above for the second operating voltage 5. Figure 1 The difference between the motor winding circuit 1 and the previous one is that, according to Figure 3 The motor winding circuit 1 already has two short-circuit mechanisms 9, which make it possible to connect the three individual coils 8 in series between the phase input terminal 6a and the phase output terminal 6b.

[0065] Figure 4 This is a diagram of a motor winding circuit 1 connected in a star configuration to the first operating voltage 4. Figure 4 On the left, a star connection well-known in the prior art can be seen. This star connection consists of three phases 6, each having a phase coil 7. According to a preferred embodiment of the invention, each of the three phase coils 7 is replaced by three individual coils 8.

[0066] Figure 4 The right side roughly corresponds to Figure 3 On the right side, the difference is that the two short-circuit mechanisms 9 short-circuit the three series-connected individual coils 8 so that the three individual coils 8 are now connected in parallel between the phase input terminal 6a and the phase output terminal 6b. Figure 4 The arrow shown on the upper right indicates the direction of the current again.

[0067] Such a motor winding circuit 1 is configured for battery power supply and has the same optimal configuration as in Table 2 above for the first operating voltage 4. Figure 2 The difference between the motor winding circuit 1 and the previous one is that, according to Figure 4 The motor winding circuit 1 has additional short-circuit mechanisms 9, which make it possible to connect the three individual coils 8 in parallel between the phase input terminal 6a and the phase output terminal 6b.

[0068] Due to the above configuration and in accordance with Figure 2 and 4 The first operating voltage 4 or according to Figure 1 and 3 Because of the motor winding circuit 1 when the motor 2 is running under the second operating voltage 5, the same power characteristics can be obtained for the first and second operating voltages 4 and 5. Therefore, according to the following formula, Figure 1 Or the series circuit shown in Figure 2 and Figure 2 The relationships between the parallel circuits shown in diagram 4 are applicable:

[0069] U Reihe =U1+U2+U3=3U

[0070] U Parallel =U1=U2=U3=U

[0071] Therefore, the ratio of the first operating voltage 4 to the second operating voltage 5 is 1 to 3.

[0072] In an alternative implementation, only two individual coils 8 can be used for each phase coil 7, resulting in a 1:2 ratio between the first operating voltage 4 and the second operating voltage 5. Therefore, N > 1 interconnected individual coils 8 can be used, with these individual coils correspondingly producing a 1:N ratio.

[0073] Figure 5 It is based on Figure 4 A simplified diagram of a circuit with two short-circuit mechanisms 9, which is used for driving with the first operating voltage 4. Figure 5 The motor platform 3 is shown, facing the battery 10 or power connector 11. Four protruding conductors 14 extend from the motor platform 3. Two of the four protruding conductors 14 are short-circuited to each other via one of the two short-circuit mechanisms 9 and connected to the phase input terminal 6a. The other two of the four protruding conductors 14 are short-circuited to each other via the other short-circuit mechanism 9 and connected to the phase output terminal 6b. All connections of the protruding conductors 14 that are not visible on the motor platform 3 are fixedly arranged on the other side, as shown below. Figure 10 As described in one of the preferred embodiments.

[0074] Figure 6 It is based on Figure 3 A simplified diagram of a circuit with two short-circuit mechanisms 9, which is used for driving using a second operating voltage 5. Figure 6 The motor platform 3 is shown, facing the battery 10 or power connector 11. Four protruding conductors 14 extend from the motor platform 3. Two of the four protruding conductors 14 are short-circuited to each other via one of the two short-circuit mechanisms 9. The other two of the four protruding conductors 14 are short-circuited to each other via the other short-circuit mechanism 9. All connections of the protruding conductors 14 that are not visible on the motor platform 3 are fixedly disposed on the other side, as shown below. Figure 10 As described in one of the preferred embodiments.

[0075] Figure 7This is an exploded view of a motor 2 having a first operating voltage and a first embedded disk 12. Figure 7 The diagram shows a motor 2, a battery 10, and a first mounting plate 12. Three phases 6 extend from the battery 10, supplying power to the motor 2. The first mounting plate 12 is embedded between the motor 2 and the battery 10. The first mounting plate 12 has three phase holes 16. Each phase hole 16 has a phase 6 protruding from the battery 10 passing through it. On the motor support side 15, i.e., the side opposite to the battery 10, a plurality of short-circuit mechanisms 9 are mounted, which short-circuit mechanisms... Figure 2 and 4 The individual coils 8 shown are short-circuited to each other.

[0076] As in Figure 9 As shown, motor 2 also has three phase holes 16 into which phase 6 of battery 10 is inserted. Each individual coil 8 integrated in motor 2 has four protruding conductors 14 extending from motor platform 3 of motor 2. When the first insert plate 12 is inserted between motor 2 and battery 10, the corresponding four protruding conductors 14 are short-circuited accordingly.

[0077] Figure 8 This is an exploded view of a motor 2 having a second operating voltage and a second embedded disk 13. Figure 8 The diagram shows a motor 2, a power connector 11, and a second insert plate 13. Three phases 6 extend from the power connector 11, supplying power to the motor 2. The second insert plate 13 is fitted between the motor 2 and the power connector 11. The second insert plate 13 has three phase holes 16. Each phase hole 16 has a phase 6 protruding from the power connector 11 passing through it. On the motor support side 15, i.e., the side opposite to the power connector 11, a plurality of short-circuit mechanisms 9 are installed, which short-circuit mechanisms... Figure 2 and 4 The individual coils 8 shown are short-circuited to each other.

[0078] As in Figure 9 As shown in the figure, motor 2 is based on Figure 7 Also having three phase holes 16, the phase 6 of the power connector 11 is inserted into these phase holes. Each individual coil 8 integrated in the motor 2 has four protruding conductors 14 extending from the motor platform 3 of the motor 2. When the second insert plate 13 is inserted between the motor 2 and the power connector 11, the corresponding four protruding conductors 14 are short-circuited accordingly.

[0079] Figure 9 This is a diagram of motor 2 and its motor platform 3. Each individual coil 8 integrated in motor 2 has four protruding conductors 14 extending from motor platform 3. These protruding conductors, according to... Figure 5 and 6The first or second embedded disk 12 or 13 is short-circuited by the short-circuit mechanism 9 (not shown). Therefore, this motor platform can be used unchanged in the first operating mode 4 and the second operating mode 5.

[0080] Figure 10 This is a diagram of the motor winding circuit 1 of one phase coil 7 and three individual coils 8 in motor 2, using the first operating voltage 4 and the second operating voltage 5. Figure 10 The motor winding circuit 1 with three individual coils 8 and its connection to the corresponding four protruding conductors 14 are shown on the left. These protruding conductors extend from the motor platform 3 to operate the motor 2 in a second operating voltage 5 via a power connector 11.

[0081] Figure 10 The right side again shows the motor winding circuit 1 and its four protruding conductors 14 according to the left side, which pass through the motor platform 3. Two of the four protruding conductors 14 are short-circuited to each other by a short-circuit mechanism 9 to run the motor 2 through a battery 10 at a first operating voltage 4.

[0082] It should be noted that the motor platform 3 can be constructed as a circuit board with a single coil 8 and a fixed connection on the side facing the motor 2, while the protruding conductors 14 extend accordingly on the other side, and these protruding conductors are short-circuited through the first or second embedded disk 12 or 13.

Claims

1. A motor (2) having a motor winding circuit (1) for operating electrosurgical instruments, having exactly one motor platform (3), the motor platform being configured and constructed for operating the motor (2) under a first operating voltage (4) and a second operating voltage (5) different from the first operating voltage (4), and having a circuit on the motor platform (3) comprising three phases (6), each having a phase coil (7), wherein at least one phase coil (7) is composed of N > 1 interconnected individual coils (8), wherein in the first operating voltage (4), the N individual coils (8) of each phase coil (7) are connected in parallel, while in the second operating voltage (5), the N individual coils (8) of each phase coil (7) are connected in series, and each phase coil (7) is provided with switching between the first operating voltage (4) and the second operating voltage (5) via at least one short-circuit mechanism (9), wherein, The at least one short-circuit mechanism (9) is constructed as a passive component, and wherein the motor platform (3) is configured and constructed such that the motor characteristics and characteristic values ​​of the motor (2) are the same during operation using two different first operating voltages (4) and second operating voltages (5), characterized in that: the at least one short-circuit mechanism (9) is mounted on the first embedded disk (12), and the short-circuit mechanism (9) is used to short-circuit the N individual coils (8) or to interrupt the connection between the N individual coils (8), so that the N individual coils (8) are connected in parallel with each other. The motor platform (3) has four protruding conductors (14) in each phase (6) for operating the motor (2) at the first operating voltage (4). The motor (2), the protruding conductors (14), and the battery (10) or power connector (11) are arranged in this order in the axial direction of the motor. The protruding conductors (14) point in the direction of the battery (10) or the direction of the power connector (11) and can be inserted into the short-circuit mechanism (9). The first embedding disk (12) is set and constructed to be embedded between the motor (2) and the battery (10).

2. A motor (2) having a motor winding circuit (1) for operating electrosurgical instruments, having exactly one motor platform (3), the motor platform being configured and constructed for operating the motor (2) under a first operating voltage (4) and a second operating voltage (5) different from the first operating voltage (4), and having a circuit on the motor platform (3) comprising three phases (6), each having one phase coil (7), wherein at least one phase coil (7) is composed of N > 1 interconnected individual coils (8), wherein in the first operating voltage (4), the N individual coils (8) of each phase coil (7) are connected in parallel, while in the second operating voltage (5), the N individual coils (8) of each phase coil (7) are connected in series, and each phase coil (7) is provided with switching between the first operating voltage (4) and the second operating voltage (5) via at least one short-circuit mechanism (9), wherein, The at least one short-circuit mechanism (9) is constructed as a passive component, and wherein the motor platform (3) is configured and constructed such that the motor characteristics and characteristic values ​​of the motor (2) are the same during operation using two different first operating voltages (4) and second operating voltages (5), characterized in that: the at least one short-circuit mechanism (9) is mounted on the second embedded disk (13), and the connection between the N individual coils (8) is interrupted or the N individual coils (8) are short-circuited by the short-circuit mechanism (9), such that the N individual coils (8) are connected in series with each other. The motor platform (3) has four protruding conductors (14) in each phase (6) for operating the motor (2) in the second operating voltage (5). The motor (2), the protruding conductors (14), and the battery (10) or power connector (11) are arranged in this order in the axial direction of the motor. The protruding conductors (14) point in the direction of the battery (10) or the power connector (11) and can be inserted into the short-circuit mechanism (9). The second embedding disk (13) is set and constructed to be embedded between the motor (2) and the power connector (11).

3. The motor (2) according to claim 1 or 2, characterized in that: Each phase coil (7) has multiple individual coils (8), and the ratio of the first operating voltage (4) for operating the motor (2) using the battery (10) to the second operating voltage (5) for operating the motor (2) via the power connector (11) is 1 / N.

4. The motor (2) according to claim 1 or 2, characterized in that: The ratio of the first operating voltage (4) to the second operating voltage (5) is 1 / 3.

5. A motor platform (3) supporting a complete motor winding circuit (1) for operating electrosurgical instruments and having a circuit consisting of three phases (6), each having a phase coil (7), wherein at least one phase coil (7) is composed of N > 1 interconnected individual coils (8), wherein in a first operating voltage (4), the N individual coils (8) of each phase coil (7) are connected in parallel, and in a second operating voltage (5), the N individual coils (8) of each phase coil (7) are connected in series, and each phase coil (7) is provided with switching between the first operating voltage (4) and the second operating voltage (5) via at least one short-circuit mechanism (9), wherein, The at least one short-circuit mechanism (9) is constructed as a passive component, and wherein the motor platform (3) is configured and constructed such that the motor characteristics and characteristic values ​​of the motor (2) are the same during operation using two different first operating voltages (4) and second operating voltages (5), characterized in that: the at least one short-circuit mechanism (9) is mounted on the first embedded disk (12), and the short-circuit mechanism (9) is used to short-circuit the N individual coils (8) or to interrupt the connection between the N individual coils (8), so that the N individual coils (8) are connected in parallel with each other. The motor platform (3) has four protruding conductors (14) in each phase (6) for operating the motor (2) at the first operating voltage (4). The motor (2), the protruding conductors (14), and the battery (10) or power connector (11) are arranged in this order in the axial direction of the motor. The protruding conductors (14) point in the direction of the battery (10) or the direction of the power connector (11) and can be inserted into the short-circuit mechanism (9). The first embedding disk (12) is set and constructed to be embedded between the motor (2) and the battery (10).

6. A motor platform (3) supporting a complete motor winding circuit (1) for operating electrosurgical instruments and having a circuit consisting of three phases (6), each having a phase coil (7), wherein at least one phase coil (7) is composed of N > 1 interconnected individual coils (8), wherein in a first operating voltage (4), the N individual coils (8) of each phase coil (7) are connected in parallel, and in a second operating voltage (5), the N individual coils (8) of each phase coil (7) are connected in series, and each phase coil (7) is provided with switching between the first operating voltage (4) and the second operating voltage (5) via at least one short-circuit mechanism (9), wherein, The at least one short-circuit mechanism (9) is constructed as a passive component, and wherein the motor platform (3) is configured and constructed such that the motor characteristics and characteristic values ​​of the motor (2) are the same during operation using two different first operating voltages (4) and second operating voltages (5), characterized in that: the at least one short-circuit mechanism (9) is mounted on the second embedded disk (13), and the connection between the N individual coils (8) is interrupted or the N individual coils (8) are short-circuited by the short-circuit mechanism (9), such that the N individual coils (8) are connected in series with each other. The motor platform (3) has four protruding conductors (14) in each phase (6) for operating the motor (2) in the second operating voltage (5). The motor (2), the protruding conductors (14), and the battery (10) or power connector (11) are arranged in this order in the axial direction of the motor. The protruding conductors (14) point in the direction of the battery (10) or the power connector (11) and can be inserted into the short-circuit mechanism (9). The second embedding disk (13) is set and constructed to be embedded between the motor (2) and the power connector (11).

7. A surgical instrument having a motor (2) and a motor winding circuit (1) according to any one of claims 1 to 4.

8. A system having a motor (2) and a motor winding circuit (1) according to any one of claims 1 to 4, wherein, The motor (2) is configured and constructed to operate using two different power sources.

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