Surgical device equipped with RFID chip and RFID antenna

Abstract

The surgical device according to the present invention comprises a surgical application section on which an RFID chip and an RFID antenna adjacent to the RFID chip are arranged, and a supply cable that can be coupled to the surgical application section. The surgical application section and the supply cable can be coupled to either an OFF state in which the first coupling contacts of the first and second coupling devices are electrically engaged and the second coupling contacts are electrically disengaged, or an ON state in which the first and second coupling contacts are electrically engaged. The first and second coupling devices each have additional coupling contacts, in the first coupling device the additional coupling contacts are connected to the first coupling contacts via the RFID antenna, and in the second coupling device the additional coupling contacts are connected in parallel with the second coupling contacts. These additional coupling contacts are configured to be electrically engaged in the OFF state and electrically disengaged in the ON state.

Description

Technical Field

[0001] The present invention relates to a surgical device comprising a surgical application part including an electric motor having motor windings, and an electrical supply cable including a plurality of lines corresponding to the number of the motor windings and being connectable to the surgical application part to supply energy to the electric motor.

Background Art

[0002] This type of surgical device is known from DE 10 2011 050 192 A1. The above document describes a surgical coupling system comprising a first coupling device and a second coupling device each including coupling contacts that are mechanically and electrically engageable with each other, wherein the first coupling device is associated with the surgical application part and the second coupling device is associated with the electrical supply cable. The first and second coupling devices are configured to take two switching states, an OFF state and an ON state. In the OFF state, the type of the surgical application part can be determined based on the encoded / detection resistance. In the ON state, the electric motor in the surgical application part is controlled by a control unit connected to the other end of the electrical supply cable based on the information. However, since the number of available resistances is limited, only general types of application parts such as milling cutters and saws can be determined, and there is a problem that the information obtainable by the control unit is limited.

[0003] In view of this problem, WO 2021 / 069662 A1 discloses a surgical device integrally provided with an RFID reading antenna as an improvement of the above surgical device.

Summary of the Invention

[0004] An object of the present invention is to further improve the surgical device. The above object is achieved by a surgical device having the features described in the independent claims.

[0005] The surgical device according to the present invention comprises a surgical application section, which includes an electric motor having motor windings and a first coupling device at one end of the surgical application section. The electric motor may be configured as an AC motor, or more preferably as a three-phase motor having three or a multiple of three motor windings.

[0006] To supply energy to the surgical application section, i.e., the electric motor, the surgical device comprises an electrical supply cable having multiple lines corresponding to the number of motor windings. Therefore, when using an AC motor, the electrical supply cable may have two lines. When using a three-phase motor, the electrical supply cable may have three lines to supply energy to three or multiples of three motor windings, such as three or six. The electrical supply cable includes a second coupling device at one end, configured to be coupled to the first coupling device. The electrical supply cable is also connected at the other end to, or can be connected to, a control unit for controlling the electric motor, for example, using a control unit coupling device provided for this purpose.

[0007] The first and second coupling devices described above are configured to be switchable between a discoupled state, an OFF state, and an ON state. In the discoupled state, the first and second coupling devices are completely disengaged mechanically and electrically. In the OFF state, the first and second coupling devices are at least partially mechanically engaged, and at least some of the coupling contacts are electrically and mechanically engaged. In the ON state, the first and second coupling devices are fully mechanically engaged, and the coupling contacts used to supply energy to the electric motor are electrically and mechanically engaged. This type of first and second coupling device is already known from DE 10 2011 050 192 A1, the disclosure of which is incorporated herein by reference.

[0008] According to the present invention, in the OFF state, the first coupling contacts of the first and second coupling devices are electrically engaged. The first coupling contact in the first coupling device is connected to the first motor winding, and the first coupling contact in the second coupling device is connected to the first line in the power supply cable. Furthermore, the second coupling contacts of the first and second coupling devices are electrically disengaged. The second coupling contact in the first coupling device is connected to the second motor winding, and the second coupling contact in the second coupling device is connected to the second line in the power supply cable. Therefore, in the OFF state, the energy supply between the second line and the second motor winding is interrupted, and the electric motor does not operate.

[0009] According to the present invention, in the ON state, the first coupling contact of the first and second coupling devices and the second coupling contact of the first and second coupling devices are electrically and mechanically engaged. Therefore, in the ON state, the second motor winding is supplied with energy via the second line, and the electric motor is driven.

[0010] The surgical device described above includes an RFID chip disposed within the first coupling device. Preferably, the RFID chip may be a glass-encapsulated passive tag. The RFID chip can store multiple data and / or information. The data may include, for example, a serial number, maintenance interval, type of maintenance work performed, manufacturing date, performance, usage counter, and / or service life. This ensures high transparency in the event of service or failure.

[0011] To read the data stored in the RFID chip, the surgical device includes an RFID antenna located within the first coupling device and configured to receive an energy supply. The RFID antenna is located adjacent to, i.e., in direct proximity to, the RFID chip and is configured to excite the RFID chip to send and receive data between the RFID chip and the control unit, preferably bidirectionally. Thus, the data stored in the RFID chip is read by the control unit, and the use of the surgical application unit may be permitted by the control unit only if, for example, the stored data satisfies predetermined conditions. In this way, the use of an unmaintained surgical application unit can be reliably prevented. Preferably, the control unit can also write data to the RFID chip so that the data is updated after use of the surgical application unit. The RFID antenna may be configured, for example, as a wire, particularly a copper wire, a printed circuit board having a conductive pattern, a flexible printed circuit board having a conductive pattern, a composite material with an activated conductive pattern formed thereon, a two-component injection molded body having a conductive pattern, or as a slot antenna.

[0012] According to the present invention, each of the first and second coupling devices includes an additional electrical coupling contact, the additional coupling contact being connected in parallel with the first coupling contact via the RFID antenna in the first coupling device, and in parallel with the second coupling contact in the second coupling device. The additional coupling contact of the first and second coupling devices is configured to be electrically engaged in the OFF state and electrically disengaged in the ON state. Therefore, in the OFF state, energy is supplied to the RFID antenna. The energy required to operate the RFID antenna is supplied via the first line, the first coupling contact in the second coupling device, the first coupling contact in the first coupling device, the RFID antenna, the additional coupling contact in the first coupling device, the additional coupling contact in the second coupling device, and the second line. In the OFF state, the operation of the electric motor is stopped because the second coupling contact of the first and second coupling devices is electrically disengaged. Furthermore, bushings comprising contact bridges and elastic elements for returning the contact bridges to their original position, as used in WO 2021 / 069 662 A2, are unnecessary. In addition, the power supply cable does not need to have more lines than the number of motor windings.

[0013] Preferably, each of the first and second coupling devices may include a third coupling contact that electrically engages in both the OFF and ON states. As a result, in the OFF state, a conductive connection is formed via the first line, the first coupling contact in the second coupling device, the first coupling contact in the first coupling device, the first motor winding, the third motor winding, the third coupling contact in the first coupling device, the third coupling contact in the second coupling device, and the third line. Therefore, the control unit can measure the first and third motor windings of the electric motor in the surgical application section, particularly their series resistance, thereby determining the type of electric motor. This can be done simultaneously with receiving / writing data from the RFID chip.

[0014] Alternatively, the first and second coupling devices may include a third coupling contact that is electrically disengaged in the OFF state and electrically engaged in the ON state. That is, the third coupling contact is electrically engaged at least in the ON state, enabling the supply of energy to the electric motor.

[0015] Furthermore, the coupling contact in the first coupling device may be pin-shaped, and the coupling contact in the second coupling device may be bush-shaped. The pin of the additional coupling contact may be formed to be longer than the pin of the second coupling contact. This allows the additional coupling contact to be electrically conductive in the OFF state, while the second coupling contact is electrically and mechanically disengaged. The pin of the additional coupling contact may include an insulating portion configured to disengage the additional coupling contact electrically in the ON state. In particular, the insulating portion can be formed by covering or coating the shaft portion of the pin-shaped coupling contact with an insulating layer. Preferably, the insulating layer is formed to be substantially flush with the conductive portion at the tip of the pin. Alternatively, or additionally, the bush of the additional coupling contact may include an insulating portion configured to disengage the third coupling contact electrically in the ON state. In particular, the insulating portion can be formed by covering the bottom portion of the bush with an insulating layer. Preferably, the insulating layer is formed to be substantially flush with the conductive portion at the entrance of the bush. In this way, a connection is obtained in which the additional coupling contact is electrically conductive when in the OFF state and electrically non-conductive when in the ON state.

[0016] Advantageously, in the first coupling device described above, the additional coupling contact and the first coupling contact can be connected in parallel via a wire jumper. This provides a simple connection between the two coupling contacts. The wire jumper can also be retrofitted to an existing 4-pole first coupling device if necessary.

[0017] Furthermore, the surgical device may include a detection resistor connected in series with the RFID antenna, at least in the OFF state. The detection resistor may be located within the first coupling device or the second coupling device. Preferably, the detection resistor is located within the first coupling device and has a resistance value corresponding to the surgical application unit or electric motor. For example, the detection resistor may have a resistance value of 10 ohms. This allows the control unit to detect the series resistance between the detection resistor and the RFID antenna via the energy supply path to the RFID antenna before and / or during excitation of the RFID antenna, and to determine that the OFF state is properly present. This method is particularly advantageous when the third coupling contacts of the first and second coupling devices are electrically disengaged in the OFF state, and the series resistance of the motor winding cannot be measured. However, even when the series resistance of the motor winding can be measured via the third coupling contacts, since the series resistance of the motor winding is in the range of a few ohms, providing the detection resistor is still advantageous.

[0018] Furthermore, the first coupling device may include a coupling plug. The RFID chip may be positioned radially outward in the coupling plug. This allows the RFID chip to be read / written from outside the coupling device by an external device (including an RFID antenna, held at the coupling plug in the area of ​​the RFID chip). Therefore, there is no need to connect the power supply cable to the second coupling device for reading / writing the RFID chip. The coupling plug may have a coupling sleeve formed radially inward into which the coupling plug of the second coupling device is inserted. The coupling sleeve may have a shape with straight sections to increase the wall thickness and define the housing space. The coupling plug and the coupling sleeve may be formed by an outer element and an inner element. An end face element may be placed between the outer element and the inner element to close the gap. This allows the RFID chip to be easily incorporated into the first coupling device.

[0019] Preferably, the RFID antenna may be positioned radially inward relative to the RFID chip in the coupling plug of the first coupling device. If a coupling sleeve is formed within the coupling plug, the RFID antenna may preferably be positioned along the straight portion of the coupling sleeve, on the coupling sleeve side. In this way, the RFID antenna is positioned near the RFID chip, and reliable reading / writing of the RFID chip is achieved.

[0020] The above-mentioned RFID antenna may be configured in the form of a slot antenna. This provides the RFID antenna with high robustness and, preferably along a straight section, allows for easy integration into the first coupling device.

[0021] Advantageously, an electrical circuit configured to synchronize the RFID antenna can be provided. This electrical circuit can be located within the second coupling device. In this case, only the RFID antenna in the area of ​​the second coupling device needs to be synchronized. Alternatively, the electrical circuit can be located within the control unit. In this case, the line supplying energy to the RFID antenna also needs to be synchronized. By synchronizing the RFID antenna with the electrical circuit, reliable data transmission between the RFID chip and the control unit via the RFID antenna is achieved.

[0022] Within the second coupling device described above, an electrical circuit can be arranged that processes data received from the RFID antenna and transmits it to a control unit, and / or processes data received from the control unit and writes it to an RFID chip. For this reason, the electrical circuit may include a microcomputer or microcontroller. The electrical circuit can convert data received from the RFID antenna or the control unit, in particular, from one format to another, and / or vice versa. Preferably, the electrical circuit can transmit data received from the RFID antenna to the control unit and / or receive data from the control unit using one-wire technology. This ensures reliable bidirectional data communication between the electrical circuit and the control unit, even when the cable length is long. Note that the two electrical circuits may be integrated into a single electrical circuit.

[0023] The surgical device according to the present invention comprises a surgical application section, which includes an electric motor having motor windings and a first coupling device at one end of the surgical application section. The electric motor may be an AC motor, or more preferably a three-phase motor having three or a multiple of three motor windings.

[0024] To supply energy to the surgical application section, i.e., the electric motor, the surgical device is equipped with an electrical supply cable having multiple lines corresponding to the number of motor windings. Therefore, when using the AC motor, the electrical supply cable may have two lines. When using the three-phase motor, the electrical supply cable may have three lines to supply energy to three motor windings or a multiple of three, for example, six motor windings. The electrical supply cable includes a second coupling device at one end, configured to be coupled to the first coupling device. The electrical supply cable is also connected at the other end to, or can be connected to, a control unit for controlling the electric motor, for example, using a control unit coupling device provided for this purpose.

[0025] The first and second coupling devices described above are configured to be switchable between a discoupled state, an OFF state, and an ON state. In the discoupled state, the first and second coupling devices are completely disengaged mechanically and electrically. In the OFF state, the first and second coupling devices are at least partially mechanically engaged, and at least some of the coupling contacts are electrically and mechanically engaged. In the ON state, the first and second coupling devices are fully mechanically engaged, and the coupling contacts used to supply energy to the electric motor are electrically and mechanically engaged. This type of first and second coupling device is already known from DE 10 2011 050 192 A1, the disclosure of which is incorporated herein by reference.

[0026] According to the present invention, in the OFF state, the first coupling contacts of the first and second coupling devices are electrically engaged. The first coupling contact in the first coupling device is connected to the first motor winding, and the first coupling contact in the second coupling device is connected to the first line in the power supply cable. Furthermore, the second coupling contacts of the first and second coupling devices are electrically disengaged. The second coupling contact in the first coupling device is connected to the second motor winding, and the second coupling contact in the second coupling device is connected to the second line in the power supply cable. Therefore, in the OFF state, the energy supply between the second line and the second motor winding is interrupted, and the electric motor does not operate.

[0027] According to the present invention, in the ON state, the first coupling contact of the first and second coupling devices and the second coupling contact of the first and second coupling devices are electrically and mechanically engaged. Therefore, in the ON state, the second motor winding is supplied with energy via the second line to drive the electric motor.

[0028] The surgical device includes an RFID chip disposed within the first coupling device. The RFID chip can preferably be a glass-encapsulated passive tag. The RFID chip can store a plurality of data and information. The data can include, for example, a serial number, maintenance intervals, types of maintenance operations performed, manufacturing date, performance, usage count counter, and / or usage period. As a result, high transparency during service or in case of failure is ensured.

[0029] To read the data stored in the RFID chip, the surgical device includes an RFID antenna disposed within the second coupling device and configured to receive energy supply. The RFID antenna is disposed adjacent to, i.e., in direct proximity to, the RFID chip, at least in the OFF state, and is configured to excite the RFID chip to transmit and receive data, preferably bidirectionally, between the RFID chip and the control unit. Thus, the data stored in the RFID chip is read by the control unit, and for example, the use of the surgical application part can be permitted by the control unit only when the stored data meets a predetermined condition. In this way, for example, the use of an unmaintained surgical application part can be reliably prevented. Preferably, the control unit can also write data to the RFID chip so that the data is updated after the use of the surgical application part. The RFID antenna can be configured, for example, in the form of a wire, particularly a copper wire, a printed circuit board having a conductor pattern, a flexible printed circuit board having a conductor pattern, a synthetic material with an activated conductor pattern formed thereon, a two-component injection molded body having a conductor pattern, or a slot antenna.

[0030] According to the present invention, each of the first and second coupling devices includes an additional electrical coupling contact, and the additional coupling contact is connected in parallel with the first coupling contact in the first coupling device and is connected in parallel with the second coupling contact via the RFID antenna in the second coupling device. The additional coupling contacts of the first and second coupling devices are configured to be electrically engaged in the OFF state and electrically disengaged in the ON state. Therefore, in the OFF state, the energy supply to the RFID antenna is achieved. The energy for operating the RFID antenna is supplied via the first line, the first coupling contact in the second coupling device, the first coupling contact in the first coupling device, the additional coupling contact in the first coupling device, the additional coupling contact in the second coupling device, the RFID antenna, and the second line. In the OFF state, since the second coupling contacts of the first and second coupling devices are electrically disengaged, the operation of the electric motor is stopped. Also, a bush having a contact bridge and an elastic element for returning the contact bridge as used in WO 2021 / 069662 A1 is unnecessary. Further, the electrical supply cable need not have a number of lines exceeding the number corresponding to the number of motor windings.

[0031] Preferably, each of the first and second coupling devices may include a third coupling contact that is electrically engaged in both the OFF state and the ON state. Therefore, in the OFF state, a conductive connection is formed via the first line, the first coupling contact in the second coupling device, the first coupling contact in the first coupling device, the first motor winding, the third motor winding, the third coupling contact in the first coupling device, the third coupling contact in the second coupling device, and the third line. Thus, the control unit can determine the type of the electric motor in the surgical application part by measuring the first and third motor windings of the electric motor in the surgical application part, particularly their series resistance. This can be performed simultaneously with the reception / writing of data from the RFID chip.

[0032] Alternatively, the first and second coupling devices may include a third coupling contact that is electrically disengaged in the OFF state and electrically engaged in the ON state. That is, the third coupling contact is electrically engaged at least in the ON state, enabling the supply of energy to the electric motor.

[0033] Furthermore, the coupling contact in the first coupling device may be pin-shaped, and the coupling contact in the second coupling device may be bush-shaped. The pin of the additional coupling contact may be formed to be longer than the pin of the second coupling contact. As a result, in the OFF state, the additional coupling contact is electrically conductive, while the second coupling contact is electrically and mechanically disengaged. The pin of the additional coupling contact may include an insulating portion configured to disengage the additional coupling contact electrically in the ON state. In particular, the insulating portion can be formed by covering or coating the shaft portion of the coupling contact, which is configured as a pin, with an insulating layer. Preferably, the insulating layer is formed to be substantially flush with the conductive portion at the tip of the pin. Alternatively, or additionally, the bush of the additional coupling contact may include an insulating portion configured to disengage the third coupling contact electrically in the ON state. In particular, the insulating portion can be formed by covering the bottom portion of the bush with an insulating layer. Preferably, the insulating layer is formed to be substantially flush with the conductive portion at the entrance of the bush. In this way, a connection is obtained in which the additional coupling contact is electrically conductive when in the OFF state and electrically non-conductive when in the ON state.

[0034] Advantageously, the additional coupling contact and the first coupling contact can be connected in parallel to each other via a wire jumper in the first coupling device. This provides a simple connection between the two coupling contacts. The wire jumper can also be retrofitted to an existing 4-pole first coupling device if necessary.

[0035] Furthermore, the surgical device may include a detection resistor connected in series with the RFID antenna, at least in the OFF state. The detection resistor may be located within the first coupling device or the second coupling device. Preferably, the detection resistor is located within the first coupling device and may have a resistance value corresponding to the surgical application unit or electric motor. For example, the detection resistor may have a resistance value of 10 ohms. Thus, via the energy supply path to the RFID antenna, the control unit can detect the series resistance between the detection resistor and the resistance of the RFID antenna before and / or during excitation of the RFID antenna, and determine that the OFF state is properly present. This method is primarily advantageous when, in the OFF state, the third coupling contacts of the first and second coupling devices are electrically disengaged, making it impossible to measure the series resistance of the motor windings. However, since the series resistance of the motor windings is in the range of a few ohms, it is still advantageous to provide the detection resistor even when the series resistance of the motor windings can be measured via the third coupling contacts.

[0036] It has been found to be beneficial when the first coupling device includes a coupling sleeve and the RFID chip is positioned radially inward of the coupling sleeve. The RFID chip and / or the molding material surrounding the RFID chip may preferably be formed substantially flush with the inner surface of the coupling sleeve. The first coupling device may also be a coupling plug, which may have a blind hole for forming the coupling sleeve. By positioning the RFID chip, particularly a glass-encapsulated tag, within the coupling sleeve, the RFID chip is reliably protected from mechanical damage. A procedure known from DE 10 2019 122 349 A1 can be used to position the RFID chip, the disclosure of which is incorporated herein by reference. Furthermore, the wall thickness of the coupling plug in which the coupling sleeve is formed may be selected to allow the RFID chip to be read and / or written by an external device (including an RFID antenna, which is held at the coupling plug in the area of ​​the RFID chip).

[0037] Advantageously, the second coupling device may include a coupling plug in which the RFID antenna is positioned radially outward. The molding material surrounding the RFID antenna and / or the RFID chip may preferably be formed substantially flush with the outer surface of the coupling plug. The second coupling device may also be a coupling sleeve, in which case the coupling plug may protrude.

[0038] The RFID antenna may preferably be molded and embedded in a groove formed on the outer surface of the coupling plug. Preferably, the RFID antenna may be made of copper wire. Thus, the shape of the RFID antenna can be defined by the guide of the groove on the outer surface of the coupling plug. The RFID antenna may be in the shape of a loop, meandering, spiral, coil, or helix. This makes it easy to define the directivity and range of the RFID antenna.

[0039] Preferably, the RFID antenna may be positioned as a loop at the distal end of the coupling plug. A portion of the loop may extend circumferentially around the coupling plug, i.e., parallel to the front end of the coupling plug. Thus, the RFID antenna can be easily formed, and it is ensured that only RFID chips in direct proximity to the RFID antenna are read / written.

[0040] The RFID antenna may be arranged as a metal coating at the distal end of the coupling plug. This allows the RFID antenna to be easily formed. The antenna formed by the metal coating may be specifically molded and embedded in the groove formed on the outer surface of the coupling plug.

[0041] Advantageously, an electrical circuit configured to tune the RFID antenna can be provided. This electrical circuit may be located within the second coupling device. Therefore, only the RFID antenna in the area of ​​the second coupling device needs to be tuned. Alternatively, the electrical circuit may be located within the control unit. In that case, the line supplying energy to the RFID antenna also needs to be tuned. By tuning the RFID antenna using the electrical circuit, reliable data transmission between the RFID chip and the control unit is achieved via the RFID antenna.

[0042] Within the second coupling device described above, an electrical circuit configured to process data received from the RFID antenna and transmit it to the control unit, and / or process data received from the control unit and write it to the RFID chip, may be arranged. For this purpose, the electrical circuit may include a microcomputer or microcontroller. The electrical circuit can convert data received from the RFID antenna or the control unit, in particular, from one format to another, and / or vice versa. Preferably, the electrical circuit can transmit data received from the RFID antenna to the control unit and / or receive data from the control unit using one-wire technology. This ensures reliable bidirectional data transmission and reception between the electrical circuit and the control unit, even when the cable length is long. The two electrical circuits described above may be integrated into a single electrical circuit. [Brief explanation of the drawing]

[0043] The present invention will be described below with reference to the drawings. Here, [Figure 1] This figure shows a surgical device including a surgical application section and an electrical supply cable, which are coupled together in the OFF state. [Figure 2] This figure shows a surgical device including a surgical application section and an electrical supply cable, which are coupled together in the ON state. [Figure 3]This is a diagram showing the surgical application section. [Figure 4] This is a diagram showing the first coupling device for the surgical application section. [Figure 5] This is a diagram showing a cross-section of the surgical application section. [Figure 6] This is a diagram showing an electrical supply cable. [Figure 7] This diagram shows the coupling plug of the second coupling device for the electrical supply cable. [Figure 8] This is a rotated view of the coupling plug of the second coupling device. [Figure 9] This diagram shows a cross-section of the first and second coupling devices coupled to each other in the OFF state. [Figure 10] This figure shows a detailed cross-section of the first and second coupling devices coupled to each other in the OFF state. [Figure 11] This figure shows a more detailed cross-section of the first and second coupling devices coupled to each other in the OFF state. [Figure 12] This figure shows another detailed cross-section of the first and second coupling devices coupled together with the coupling devices in the OFF state. [Figure 13] This figure shows a detailed cross-section of the first and second coupling devices coupled together in the ON state. [Figure 14] This figure shows a more detailed cross-section of the first and second coupling devices coupled together in the ON state. [Figure 15] This is a schematic circuit diagram in the OFF state. [Figure 16] This is a schematic circuit diagram showing the conduction path for measuring the series resistance of two motor windings when the motor is OFF. [Figure 17] This is a schematic circuit diagram showing the conductive path for supplying energy to the RFID antenna when it is in the OFF state. [Figure 18] This is a schematic circuit diagram of the ON state. [Figure 19] This is a schematic circuit diagram showing the conductive path for supplying energy to the RFID antenna when it is in the OFF state. [Figure 20]This is a schematic circuit diagram of the ON state. [Figure 21] This is a diagram showing the first coupling device for the surgical application section. [Figure 22] Figure 22 shows the first coupling device, with the internal and end face elements of the coupling device not shown. [Figure 23] This is a schematic circuit diagram showing the conductive path for supplying energy to the RFID antenna when it is in the OFF state. [Figure 24] This is a schematic circuit diagram showing the conduction path for measuring the series resistance of two motor windings when the motor is OFF. [Figure 25] This is a schematic circuit diagram of the ON state. [Modes for carrying out the invention]

[0044] Embodiments of the present invention will be described below with reference to the drawings. Note that identical or functionally corresponding parts and / or components are denoted by the same reference numerals.

[0045] Figures 1 and 2 show a surgical device 1 comprising a surgical application section 2, which may be, for example, a milling cutter or saw, and an electrical supply cable 4. At the distal end of the surgical application section 2 is a tool 6, which can be driven by an electric motor 34 (see Figure 15) located within the surgical application section 2. At its proximal end, the surgical application section 2 is connected to the electrical supply cable 4 by a coupling system 8 (known by DE 10 2011 050 192 A1). The coupling system 8 is configured to allow two switching or coupling states, namely the OFF state (Figure 1) and the ON state (Figure 2).

[0046] Figure 3 shows the surgical application section 2 in a disconnected state, i.e., when the coupling system 8 is disengaged. In this embodiment, the surgical application section 2 is configured as a hand-held and / or manipulable application section and therefore includes a handle 10. The first coupling device 12 of the coupling system 8 is located at the proximal end of the surgical application section 2. In this embodiment, the coupling device 12 is configured as a coupling plug 14 with a coupling sleeve 16 formed inside.

[0047] Figure 4 shows details of the coupling device 12. Four coupling contacts are arranged within the coupling sleeve 16: a first coupling contact 18, a second coupling contact 20, a third coupling contact 22, and a fourth or additional coupling contact 24, which in this embodiment are formed as pins. The RFID chip 26 is formed here as a glass-encapsulated passive tag and is positioned on the inner surface of the coupling sleeve 16 of the first coupling device 12, substantially flush with the inner surface of the coupling sleeve 16.

[0048] Figure 5 shows a cross-section of the first coupling device 12 in the plane of the second coupling contact 20 and the fourth coupling contact 24. It can be seen that the second coupling contact 20 is shorter than the fourth coupling contact 24. Furthermore, the fourth coupling contact 24 is composed of two parts, one having a conductive part 28 at its tip and the other an insulating part 30 at its shaft. A wire jumper 32 can also be seen.

[0049] The connections of coupling contacts 18, 20, 22, and 24 will be explained based on Figure 15. The first coupling contact 18 is connected to the first motor winding 36. The second coupling contact 20 is connected to the second motor winding 38. The third coupling contact 22 is connected to the third motor winding 40. Within the surgical application section 2, the fourth coupling contact 24 is connected in parallel with the first coupling contact 18 via a wire jumper 32.

[0050] Figure 6 shows an electrical supply cable 4 having a second coupling device 42 at its distal end. The second coupling device 42 is configured as a coupling sleeve 44 with a coupling plug 46 formed inside. This allows the second coupling device 42 to be mechanically engaged with the first coupling device 12. The second coupling device 42 is connected to a control unit coupling device 50, which can be connected to a control unit for operating the electric motor 34, via a cable section 48 on which multiple lines corresponding to the number of motor windings extend.

[0051] Figures 7 and 8 show details of the coupling plug 46 with the coupling sleeve 44 removed. Four coupling contacts are embedded or inserted within the coupling plug 46: a first coupling contact 52, a second coupling contact 54, a third coupling contact 56, and a fourth or additional coupling contact 58. In this embodiment, the coupling contacts 52, 54, 56, and 58 are bushings and are mechanically engageable with pin-shaped coupling contacts 18, 20, 22, and 24. The RFID antenna 60 is embedded in a groove on the outer surface of the coupling plug 46 provided for this purpose. In this embodiment, the RFID antenna 60 is a copper wire loop. This copper wire loop first extends axially along the outer surface of the coupling plug 46 to the end face of the coupling plug 46, and from there extends circumferentially along the coupling plug 46, i.e., parallel to the end face of the coupling plug 46, by a predetermined angle, such as 180°. It then returns to approximately the starting point via the axial and circumferential sections. In this way, the RFID antenna 60 can be easily positioned on the outer surface of the coupling plug 46. Note that this type of RFID antenna 60 is just one example, and other antenna shapes such as serpentine, spiral, coil, or helix shapes are also possible. Alternatively, other types of antennas can be used, such as printed circuit boards with conductive patterns, flexible printed circuit boards with conductive patterns, composite materials with activated conductive patterns, two-component injection molded bodies with conductive patterns, or slot antennas.

[0052] The second coupling device 42 includes an electrical circuit 62 connected to the RFID antenna 60. The electrical circuit 62 can be configured to tune the RFID antenna 60, thereby enabling reliable data transmission between the RFID chip 26 and the control unit via the RFID antenna 60. Alternatively, or additionally, the electrical circuit 62 may be configured to process data received from the RFID antenna 60 and transmit it to the control unit via lines 64, 66 of the power supply cable 4 (see Figure 15), for example using one-wire technology, and / or to process data received from the control unit, for example using one-wire technology, and write it to the RFID chip 26. As a result, the power supply cable 4 can have a longer length without hindering data transmission.

[0053] The connections of coupling contacts 52, 54, 56, and 58 will be explained based on Figure 15. The first coupling contact 52 is connected to the first line 64. The second coupling contact 54 is connected to the second line 66. The third coupling contact 56 is connected to the third line 68. As described above, lines 64, 66, and 68 extend within the cable section 48 of the power supply cable 4. The fourth coupling contact 58 is connected to the second line 66 via the RFID antenna 60 within the second coupling device 42.

[0054] The switching states of the coupling system 8 are described below. In Figure 9, the first coupling device 12 and the second coupling device 42 are partially engaged to reach the OFF state. It can be seen that the third coupling contact 22 and the fourth coupling contact 24, i.e., the conductive parts 28, partially protrude into the coupling contacts 56 and 58 provided for them within the coupling plug 46. As a result, the insulating part 30 is located outside the fourth coupling contact 58. A wire jumper 32 connecting the first coupling contact 18 and the fourth coupling contact 24 can also be seen. In the viewpoint shown in Figure 9, the antenna 60 has its loop portion circumferentially positioned behind the illustrated plane so that it is positioned adjacent to the RFID chip 26.

[0055] Figure 10 also shows the case when the coupling system 8 is in the OFF state. Since the second coupling contact 20 is shorter than the other coupling contacts 18, 22, and 24, it can be seen that in the OFF state it does not protrude into the corresponding second coupling contact 54 in the coupling plug 46. As a result the connection between the second line 66 and the second motor winding 38 is interrupted and the operation of the electric motor 34 is stopped. Furthermore, Figure 10 shows the arrangement of the RFID antenna 60 adjacent to the RFID chip 26 in the OFF state, in particular the arrangement of the portion that extends circumferentially around the coupling plug 46.

[0056] Figure 11 shows cross-sections along the plane of the third and fourth coupling contacts 22, 24, 56, and 58. It can be seen that only the conductive portion 28 of the fourth coupling contact 24 protrudes into the corresponding fourth coupling contact 58 within the coupling plug 46. The fourth coupling contact 58 within the coupling plug 46 has a conductive portion 70 on its inlet side and an insulating portion 72 on its bottom side. In the OFF state, the conductive portion 28 of the fourth coupling contact 24 and the conductive portion 70 of the fourth coupling contact 58 are engaged both mechanically and electrically.

[0057] Figure 12 shows cross-sections along the planes of the first and second coupling contacts 18, 20, 52, and 54. In the OFF state, it can be seen that the second coupling contact 20 and its corresponding second coupling contact 54 are disengaged.

[0058] Furthermore, Figures 11 and 12 show a wire jumper 32 extending between the first coupling contact 18 and the fourth coupling contact 24 to connect them in parallel. In this embodiment, the first coupling contact 18 and the fourth coupling contact 24 are arranged diagonally, but these two coupling contacts 18 and 24 may be arranged side by side.

[0059] Figure 13 shows a cross-section of the coupling system 8 in the ON state in the plane of the third and fourth coupling contacts 22, 24, 56, and 58. It can be seen that the first coupling device 12 is fully engaged with the second coupling device 42 and the coupling plug 46 is fully inserted into the coupling sleeve 16. In this configuration, the insulating portion 30 of the fourth coupling contact 24 faces the conductive portion 70 of the fourth coupling contact 58, and the conductive portion 28 of the fourth coupling contact 24 faces the insulating portion 72 of the fourth coupling contact 58. Therefore, although the fourth coupling contacts 24 and 58 are mechanically engaged, they are electrically disengaged, i.e., non-conductive, due to the aforementioned arrangement of the insulating portions 30 and 72 and the conductive portions 28 and 70. As a result, electrical conduction between the fourth coupling contacts 24 and 58 is interrupted, preventing a short circuit of the motor windings 36 and 38 of the electric motor 34 (see Figure 15).

[0060] Figure 14 shows a cross-section of the coupling system 8 in the ON state in the plane of the first and second coupling contacts 18, 20, 52, and 54. In this state, it can be seen that the second coupling contact 20 and its corresponding second coupling contact 54 are also electrically and mechanically engaged. Thus, a conductive connection is formed between the second line 66 and the second motor winding 38. As a result, in the ON state, all three motor windings 36, 38, and 40 are electrically conductively connected to the lines 64, 66, and 68 provided for them in the power supply cable 4, making it possible to operate the electric motor 34 in response to control by the control unit.

[0061] With the configuration of coupling contacts 18, 20, 22, 24 in the first coupling device 12 and coupling contacts 52, 54, 56, 58 in the second coupling device 42 described above, the following electrical connections are obtained in the OFF state and the ON state.

[0062] As shown by the arrows in Figure 16, in the OFF state, a conductive connection is formed via the first line 64, the first coupling contact 52, the first coupling contact 18, the first motor winding 36, the third motor winding 40, the third coupling contact 22, the third coupling contact 56, and the third line 68. This allows the control unit to apply a measurement signal, for example a predetermined current or voltage, to the first line 64 and the third line 68, thereby determining the series resistance of the first motor winding 36 and the third motor winding 40. As a result, the control unit can determine the type of electric motor 34 used in the surgical application unit 2 based on the measured series resistance.

[0063] Furthermore, as indicated by the arrows in Figure 17, in the OFF state, conductive connections are formed via the first line 64, the first coupling contact 52, the first coupling contact 18, the wire jumper 32, the fourth coupling contact 24, the fourth coupling contact 58, the RFID antenna 60, and the second line 66. This supplies energy to the RFID antenna 60, exciting the adjacent RFID chip 26 for reading or writing data to the RFID chip 26. As a result, data transmission becomes possible between the RFID chip 26 and the control unit. For example, before using the surgical application unit 2, data can be read from the RFID chip 26, and the control unit can determine whether the surgical application unit 2 is suitable for its intended use. After use, the data in the RFID chip 26 can be updated. This procedure can also be performed, for example, before and after maintenance.

[0064] Figure 18 shows the case where the coupling system 8 is in the ON state. In this state, the fourth coupling contacts 24 and 58 are electrically disengaged, and the coupling contacts 18, 20, and 22 of the first coupling device 12 are electrically engaged with the corresponding coupling contacts 52, 54, and 56 of the second coupling device 42. This allows the electric motor 34 to be operated in response to activation by the control unit.

[0065] One embodiment of the present invention has been described above. However, the present invention is not limited to the above embodiment, and the following modifications can be applied.

[0066] The tool 6 may include yet another RFID chip. In this case, another RFID antenna may be placed adjacent to the other RFID chip within the surgical application section 2 to read from and / or write data to the other RFID chip. The RFID antenna 60 and the other RFID antenna may be connected in series to the control unit and the electrical circuit 62. Alternatively, the RFID antenna 60 and the other RFID antenna may be connected in parallel to the control unit via separate electrical circuits 62 for synchronizing these RFID antennas. By providing another RFID chip in the tool 6 and an RFID antenna in the surgical application section 2, the control unit can also read / write additional data via the tool 6. As a result, transparency in service or failure is further improved.

[0067] The above describes an embodiment in which the third coupling contact 22 has the same length as the first and fourth coupling contacts 18 and 24. According to another embodiment, the third coupling contact 22 has the same length as the second coupling contact 20, i.e., it is shorter than the first and fourth coupling contacts 18 and 24. In this case, in the OFF state, the third coupling contact 22 does not electrically or mechanically engage with the third coupling contact 56. The corresponding circuit diagram is shown in Figure 19. It can be seen that the RFID antenna 60 is excited via the first line 64, the first coupling contact 52 of the second coupling device 42, the first coupling contact 18 of the first coupling device 12, the wire jumper 32, the fourth coupling contact 24 of the first coupling device 12, the fourth coupling contact of the second coupling device 42, the detection resistor 61, the RFID antenna 60, and the second line 66.

[0068] However, in this embodiment, since the third coupling contacts 22 and 56 are electrically disengaged, the series resistance of the motor windings 36 and 40 cannot be measured. Therefore, it is preferable to connect the detection resistor 61 in series with the RFID antenna 60, at least in the OFF state. In this case, the control unit can perform resistance measurements before and / or during excitation of the RFID antenna 60 and determine that the OFF state is properly present. For example, the detection resistor 61 may have a resistance value of 10 ohms. The series resistance across the RFID antenna 60 and the detection resistor 61 will be approximately 12.7 ohms. Alternatively, the detection resistor 60 may be located within the surgical application unit 2 and encoded according to the type of surgical application unit 2 used and / or the type of electric motor 34 used.

[0069] Furthermore, the detection resistor 61 may also be provided in the embodiments shown in Figures 15 to 19. In this case, the series resistance of the motor windings 36 and 40 can be measured, and / or the series resistance spanning the RFID antenna 60 and the detection resistor 61 can be measured.

[0070] Figure 20 shows the circuit diagram when the ON state is present. It can be seen that the first to third coupling contacts 18, 20, 22, 52, 54, and 56 are electrically engaged, while the fourth coupling contacts 24 and 58 are electrically disengaged. This allows the control unit to start the electric motor 34.

[0071] Figure 21 shows another embodiment of the first coupling device 12 of the surgical application section 2. The coupling device 12 shown in Figure 21 differs from the coupling device 12 shown in Figure 4 in that it has a housing chamber 17 in which the RFID chip 26 and the RFID antenna 60 are arranged adjacent to each other. This means that both the RFID chip 26 and the RFID antenna 60 are located within the first coupling device 12.

[0072] Similar to the embodiment shown in Figure 4, the first coupling device 12 includes a coupling plug 14 with a coupling sleeve 16 formed inside, the coupling sleeve 16 housing first to fourth coupling contacts 18, 20, 22, 24. To form the coupling plug 14 and coupling sleeve 16, the coupling device 12 includes an outer element 15A, an inner element 15B, and an end face element 15C. The outer element 15A is a cylindrical shell that defines the outer shape of the coupling plug 14. The inner element 15B extends partially parallel to the outer element 15A and has a straight section 15D along the remaining circumferential direction. Thus, the inner element 15B defines the shape of the coupling sleeve 16. By providing the straight section 15D, the wall thickness between the outer element 15A and the inner element 15B is increased, resulting in the formation of a housing chamber 17. The end face element 15C closes the opening or gap between the outer element 15A and the inner element 15B on the end face side of the first coupling device 12. It goes without saying that the shape of the coupling plug 46 of the second coupling device 42 is adapted to the shape of the coupling sleeve 16.

[0073] Figure 22 shows a first coupling device 12 with the inner element 15B and end-face element 15C omitted to illustrate the arrangement of the RFID chip 26 and RFID antenna 60 within the housing chamber 17. The RFID chip 26 is positioned radially outward in the coupling plug 16. In this manner, the RFID chip 26 can be read / written not only by the RFID antenna 60 but also by an external device configured and designed for this purpose. The external device includes an RFID antenna for this purpose and can excite the RFID chip 26. The RFID antenna 60 is positioned radially inward adjacent to the RFID chip 26, thereby reducing the distance between the RFID chip 26 and the RFID antenna 60. In the embodiment shown in Figure 22, the RFID antenna 60 is a slot antenna and is positioned along the straight section 15D. This arrangement within the first coupling device 12 ensures the relative positioning of the RFID chip 26 and the RFID antenna 60, guaranteeing reliable reading / writing of the RFID chip 26.

[0074] Figure 23 shows the corresponding circuit diagram in the OFF state, where the arrows indicate the conduction path for supplying energy to the RFID antenna 60. Thus, the RFID antenna 60 is excited via the first line 64, the first coupling contact 52 of the second coupling device 42, the first coupling contact 18 of the first coupling device 12, the detection resistor 61, the RFID antenna 60, the fourth coupling contact 24 of the first coupling device 12, the fourth coupling contact 58 of the second coupling device 42, and the second line 66.

[0075] Figure 24 shows the measurement of the series resistance of motor windings 36 and 40 in the OFF state. Figure 24 corresponds to Figure 16. Figure 25 shows the circuit diagram in the ON state and corresponds to Figure 18.

[0076] In the embodiments shown in Figures 23 to 25, a detection resistor 61 is provided. However, in this embodiment, the second coupling contacts 22 and 56 are already electrically and mechanically engaged in the OFF state, and the control unit can measure the series resistance of the motor windings 36 and 40, so the detection resistor 61 can be omitted.

[0077] Furthermore, in an embodiment in which the RFID chip 26 and RFID antenna 60 are arranged within the first coupling device 12, a configuration is also conceivable in which the third coupling contact 22 has the same length as the second coupling contact 20, and as a result, the second coupling contacts 22 and 52 are electrically and mechanically disengaged in the OFF state. [Explanation of symbols]

[0078] 1. Surgical devices 2 Surgical Application Department 4. Power supply cable 6 Tools 8 coupling systems 10 handles 12 First coupling device 14 coupling plugs 15A outer element 15B Inner elements 15C End element 15D Straight section 16 Jointing Sleeves 17 Confinement Rooms 18 1st coupling contact 20 Second coupling contact 22 Third coupling contact 24 4th coupling contact 26 RFID chips 28 Conductive part 30 Insulation part 32 Wire Jumper 34 Electric motors 36 First motor winding 38 Second motor winding 40 Third motor winding 42 Second coupling device 44 Connecting sleeves 46 coupling plugs 48 Cable section 50 Control unit coupling device 52 1st coupling contact 54 2nd coupling contact 56 Third coupling contact 58 4th coupling contact 60 RFID Antennas 61 detection resistor 62 Electrical Circuits 64 First Line 66 Second Line 68 Third Line 70 Conductive part 72 Insulation part

Claims

1. A surgical device (1), A surgical application section (2) includes an electric motor (34) having motor windings (36, 38, 40) and a first coupling device (12) at one end, An electrical supply cable (4) having multiple lines corresponding to the number of motor windings (36, 38, 40), including a second coupling device (42) at one end that is configured to be coupled to the first coupling device (12), and the other end connected to or connectable to a control unit that controls the electric motor (34), Equipped with, The first and second coupling devices (12, 42) described above are They are in a state of being uncoupled from each other, or The first coupling contacts (18, 52) of the first and second coupling devices (12, 42) are electrically engaged, and the second coupling contacts (20, 54) of the first and second coupling devices (12, 42) are electrically disengaged in an OFF state, or The first coupling contacts (18, 52) and the second coupling contacts (20, 54) of the first and second coupling devices (12, 42) described above are electrically engaged in the ON state. It is configured to be switchable, An RFID chip (26) placed inside the first coupling device (12) described above, An RFID antenna (60) is located within the first coupling device (12) described above, configured to receive energy supply, positioned adjacent to the RFID chip (26), and configured to excite the RFID chip (26) to transmit and receive data between the RFID chip (26) and the control unit, particularly bidirectionally. Equipped with, moreover, The first and second coupling devices (12, 42) each include additional coupling contacts (24, 58), In the first coupling device (12) described above, the additional coupling contact (24) is connected in parallel with the first coupling contact (18) via the RFID antenna (60), In the second coupling device (42) described above, the additional coupling contact (58) is connected in parallel with the second coupling contact (54), The additional coupling contacts (24, 58) are configured to be electrically engaged in the OFF state and electrically disengaged in the ON state. A surgical device characterized by the following features.

2. In the surgical device (1) according to claim 1, The first and second coupling devices (12, 42) described above include a third coupling contact (22, 56) that electrically engages in both the OFF and ON states. A surgical device characterized by the following features.

3. In the surgical device (1) according to claim 1, The first and second coupling devices (12, 42) described above include a third coupling contact (22, 56) that is electrically disengaged in the OFF state and electrically engaged in the ON state. A surgical device characterized by the following features.

4. In the surgical device (1) according to any one of claims 1 to 3, The coupling contacts (18, 20, 22, 24) of the first coupling device (12) described above are pin-shaped. The coupling contacts (52, 54, 56, 58) of the second coupling device (42) described above are bush-shaped. In the first coupling device (12) described above, the additional coupling contact (24) is formed to be longer than the second coupling contact (20). The above additional coupling contacts (24, 58) include insulating portions (30, 72) configured to be electrically disengaged when in the ON state. A surgical device characterized by the following features.

5. In the surgical device (1) according to any one of claims 1 to 4, The additional coupling contact (24) and the first coupling contact (18) in the first coupling device (12) are connected in parallel to each other via a wire jumper (32). A surgical device characterized by the following features.

6. In the surgical device (1) according to any one of claims 1 to 5, At least in the OFF state, the detection resistor (61) is connected in series with the RFID antenna (60). A surgical device characterized by the following features.

7. In the surgical device (1) according to any one of claims 1 to 6, The first coupling device (12) described above includes a coupling plug (14), and the RFID chip (26) is positioned radially outward on the coupling plug (14). A surgical device characterized by the following features.

8. In the surgical device (1) according to claim 7, The RFID antenna (60) is positioned radially inward from the RFID chip (26) in the coupling plug (14). A surgical device characterized by the following features.

9. In the surgical device (1) according to claim 8, The above RFID antenna (60) is a slot antenna. A surgical device characterized by the following features.

10. In a surgical device (1) according to any one of claims 1 to 9, The control unit or the second coupling device (42) is located within the above-mentioned control unit and includes an electrical circuit (62) configured to synchronize the RFID antenna (60). A surgical device characterized by the following features.

11. In the surgical device (1) according to any one of claims 1 to 10, The second coupling device (42) is located within the above-mentioned electrical circuit (62) and is configured to process data received from the RFID antenna (60) and transmit it to the control unit, particularly using one-wire technology, and / or process data received from the control unit, particularly using one-wire technology, and write it to the RFID chip (26). A surgical device characterized by the following features.

12. A surgical device (1), A surgical application section (2) includes an electric motor (34) having motor windings (36, 38, 40) and a first coupling device (12) at one end, An electrical supply cable (4) having multiple lines corresponding to the number of motor windings (36, 38, 40), including a second coupling device (42) at one end that is configured to be coupled to the first coupling device (12), and the other end connected to or connectable to a control unit that controls the electric motor (34), Equipped with, The first and second coupling devices (12, 42) described above are In a state of being unbonded to each other, or The first coupling contacts (18, 52) of the first and second coupling devices (12, 42) are electrically engaged, and the second coupling contacts (20, 54) of the first and second coupling devices (12, 42) are electrically disengaged in an OFF state, or The first coupling contacts (18, 52) and the second coupling contacts (20, 54) of the first and second coupling devices (12, 42) described above are electrically engaged in the ON state. It is configured to be switchable, An RFID chip (26) placed inside the first coupling device (12) described above, An RFID antenna (60) is located within the second coupling device (42) described above, configured to receive energy supply, and is positioned adjacent to the RFID chip (26) at least in the OFF state, and is configured to excite the RFID chip (26) and transmit and receive data between the RFID chip (26) and the control unit, particularly bidirectionally. Equipped with, moreover, The first and second coupling devices (12, 42) each include additional coupling contacts (24, 58), In the first coupling device (12) described above, the additional coupling contact (24) is connected in parallel with the first coupling contact (18). In the second coupling device (42) described above, the additional coupling contact (58) is connected in parallel with the second coupling contact (54) via the RFID antenna (60), The additional coupling contacts (24, 58) are configured to be electrically engaged in the OFF state and electrically disengaged in the ON state. A surgical device characterized by the following features.

13. In the surgical device (1) according to claim 12, The first and second coupling devices (12, 42) described above include a third coupling contact (22, 56) that electrically engages in both the OFF and ON states. A surgical device characterized by the following features.

14. In the surgical device (1) according to claim 12, The first and second coupling devices (12, 42) described above include a third coupling contact (22, 56) that is electrically disengaged in the OFF state and electrically engaged in the ON state. A surgical device characterized by the following features.

15. In the surgical device (1) according to any one of claims 12 to 14, The coupling contacts (18, 20, 22, 24) of the first coupling device (12) described above are pin-shaped. The coupling contacts (52, 54, 56, 58) of the second coupling device (42) described above are bush-shaped. In the first coupling device (12) described above, the additional coupling contact (24) is formed to be longer than the second coupling contact (20). The above additional coupling contacts (24, 58) include insulating portions (30, 72) configured to be electrically disengaged when in the ON state. A surgical device characterized by the following features.

16. In the surgical device (1) according to any one of claims 12 to 15, The additional coupling contact (24) and the first coupling contact (18) in the first coupling device (12) are connected in parallel to each other via a wire jumper (32). A surgical device characterized by the following features.

17. In the surgical device (1) according to any one of claims 12 to 16, At least in the OFF state, the detection resistor (61) is connected in series with the RFID antenna (60). A surgical device characterized by the following features.

18. In a surgical device (1) according to any one of claims 12 to 17, The first coupling device (12) described above includes a coupling sleeve (16), and the RFID chip (26) is positioned radially inward of the coupling sleeve (16), particularly so as to be flush with the inner surface of the coupling sleeve (16). A surgical device characterized by the following features.

19. In a surgical device (1) according to any one of claims 12 to 18, The second coupling device (42) described above includes a coupling plug (46), and the RFID antenna (60) is positioned radially outward of the coupling plug (46), and in particular, flush with the outer surface of the coupling plug (46). A surgical device characterized by the following features.

20. In the surgical device (1) according to claim 19, The RFID antenna (60) is specifically molded and embedded in a groove formed on the outer surface of the coupling plug (46). A surgical device characterized by the following features.

21. In the surgical device (1) according to claim 19 or 20, The RFID antenna (60) is positioned as a loop at the distal end of the coupling plug (46). A surgical device characterized by the following features.

22. In the surgical device (1) according to claim 19 or 20, The RFID antenna (60) is positioned as a metal coating at the distal end of the coupling plug (46). A surgical device characterized by the following features.

23. In a surgical device (1) according to any one of claims 12 to 22, The control unit or the second coupling device (42) is located within the above-mentioned control unit and includes an electrical circuit (62) configured to synchronize the RFID antenna (60). A surgical device characterized by the following features.

24. In a surgical device (1) according to any one of claims 12 to 23, The second coupling device (42) is located within the above-mentioned electrical circuit (62) and is configured to process data received from the RFID antenna (60) and transmit it to the control unit, particularly using one-wire technology, and / or process data received from the control unit, particularly using one-wire technology, and write it to the RFID chip (26). A surgical device characterized by the following features.

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