Surgical light with replaceable functional unit

Abstract

The invention relates to a lighting device (10) comprising a base body (12), at least one lighting module (14) and at least two functional units (16) having different functions, which can be selectively connected to the base body (12), each of which can be connected to and disconnected from the base body (12) in a repeatable manner, the base body (12) has a mechanical interface (20) such that a predetermined functional unit (16) can be inserted into the base body (12) as required or can be replaced with another functional unit (16), each functional unit (16) having a mechanical interface (20) which is designed substantially similarly with respect to all functional units (16) and which is designed to engage with a mating receptacle (18) on the base body (12), therefore, the corresponding functional unit (16) is fixed on the base body (12).

Description

Technical Field

[0001] The present invention relates to a lighting device suitable for illuminating an operating area. Background Art

[0002] Illuminating devices for surgical areas are known in the prior art. Some of these devices, designed for specific surgeries, have highly specialized functions, such as lamps emitting light within a specific spectral range or lamps with adjustable lighting intensity or the resulting illuminated area. However, lamps designed specifically for a particular application may be useless for others. Consequently, hospitals, for example, need to stock a large number of different lamps to cover diverse application scenarios. Summary of the Invention

[0003] An object of the present invention is to provide a lighting device that can be adjusted according to specific applications.

[0004] The object of the present invention is achieved by a lighting device suitable for illuminating a surgical area, the lighting device comprising:

[0005] - substrate;

[0006] - at least one lighting module that emits light and is arranged on a base body; and

[0007] at least two functional units having different functions, said functional units being designed to be selectively connected to a base body of the lighting device,

[0008] wherein each functional unit is designed to be connected to and disconnected from the base body in a reproducible manner, so that a predetermined functional unit can be inserted into the base body or replaced by another functional unit as required,

[0009] Each functional unit has a mechanical interface which is constructed essentially similarly for all functional units and is designed to engage with a matching receptacle on the base body so that the respective functional unit is fixed to the base body.

[0010] In this context, the term "different functions" may particularly mean that at least two functional units differ in at least one parameter. For example, the at least two functional units are both so-called "spot lighting" units, both generating a focused illumination area, but are designed to generate illumination areas of different sizes at the same distance from the respective functional unit.

[0011] According to the present invention, a lighting device can be provided that has a basic lighting function, namely, a light-emitting unit fixedly mounted in a base body, but can be expanded with other functions depending on the application scenario. In this way, for example, the same lighting device, which is fastened to the ceiling of an operating room, can be equipped with different additional functions and thus used in different applications.

[0012] The base body may have a light exit surface for allowing light emitted by at least one light-emitting module to exit the base body, and a back surface arranged opposite the light exit surface, wherein the receptacle is arranged on the base body for connection to the functional unit on the back surface. Thus, a completely enclosed, in particular completely flat, disk may be arranged on the light exit surface. In particular, the receptacle may be closed with a flap or a cover, which may also have a sealing function. Such a cover may be constructed as a separate component separate from the corresponding functional unit. Alternatively, such a cover may be fixedly connected to the corresponding functional unit or even formed integrally therewith, so that each functional unit can be provided with its own cover to close the receptacle. The opening of the receptacle may also serve as a service access for maintaining the lighting device. Of course, it is also conceivable to arrange the receptacle or another similar receptacle on the light exit surface.

[0013] Generally speaking, for the lighting device according to the present invention, it is often desirable to construct the base body to be liquid-tight. This allows disinfection of the outside of the base body without the disinfectant entering the interior of the base body and potentially causing interference there. To ensure that the cover or flap, which is fully connected to the base body, also meets this sealing requirement, the cover or flap can be equipped with a sealing unit and / or cooperate with a sealing unit provided on the base body. This sealing unit can be, for example, a sealing cord or a sealing lip.

[0014] Advantageously, at least one functional unit can have an electrical interface, and the receptacle of the base body can have a corresponding electrical mating interface, which is designed to establish an electrical connection between the base body and the corresponding functional unit when the functional unit is arranged in the receptacle. This means that the electrical interface provided in addition to the mechanical interface of the lighting device can, for example, be designed to supply power to the corresponding functional unit accommodated in the receptacle and / or, if necessary, transmit signals generated by the functional unit via the corresponding electrical mating interface to the base body of the lighting device and, if necessary, subsequently to the associated control unit. The electrical interface and / or the electrical mating interface can also overlap with parts of the mechanical interface and / or the receptacle, which, for example, are provided in the mechanical interface and the receptacle to prevent the corresponding functional unit accommodated in the receptacle from rotating.

[0015] In particular, the functional units can have substantially the same weight relative to one another. This has the advantage that the holding device for holding the lighting device or the base body of the lighting device so that it can be displaced in space can remain in a predetermined weight-balanced configuration. In other words, the weight-balanced configuration of the holding device does not need to be recalibrated when replacing a functional unit.

[0016] Thus, at least one functional unit, in particular all functional units, can have a weight of 0.3 kg to 2 kg, in particular 0.7 kg to 1.5 kg, preferably approximately 1 kg.

[0017] Furthermore, the interface between the base body's receptacle and the at least two functional units can be designed to enable tool-free connection and / or disconnection of the functional units from the base body's receptacle. This means, in particular, that a user of the lighting device can manually remove a functional unit connected to the base body from the base body and connect another functional unit to the base body. In the aforementioned case where the cover or flap is separate from the corresponding functional unit, the cover or flap can also be opened and closed manually by the user of the lighting device. It is conceivable that the user operation for opening the cover or flap (regardless of whether the cover or flap is connected to or separate from the functional unit) can be, for example, a rotational movement and / or a press. Pressing the cover or flap can be performed against a spring force that preloads the flap or cover and / or the functional unit inserted into the receptacle in a predetermined direction (e.g., opposite the direction in which the functional unit is inserted into the receptacle). A corresponding spring element can, for example, be arranged in the base body's receptacle. For example, in the case of a bayonet-type connection, the user's pressing motion can result in a rotational movement to open the cover or flap.

[0018] For example, the functional unit may include at least two of the following:

[0019] - an optical detection unit for visible light;

[0020] - Optical detection unit for UV light;

[0021] - an optical detection unit for infrared light, in particular near-infrared light;

[0022] - a transmitting unit for transmitting laser light;

[0023] an emission unit for emitting light that substantially corresponds to the spectrum of at least one lighting module of the lighting device, wherein the emission unit is in particular designed to emit light in a focused manner, thereby generating an illuminated area having a higher brightness than the illuminated area generated by the at least one lighting module;

[0024] - an emitting unit for emitting light having a spectrum different from that of at least one luminous module of the lighting device, in particular having a blue spectrum of 460 nm to 480 nm and / or a blue spectrum of 500 nm to 550 nm

[0025] nm green spectrum, wherein the emitting unit is designed in particular to emit light in a focused manner, thereby generating an illuminated area having a higher brightness than the illuminated area generated by the at least one light-emitting module;

[0026] a power supply unit, which is designed to supply power to the lighting device so that the lighting device can operate autonomously;

[0027] - a gesture detection unit, configured to detect a user's gesture, wherein the gesture detection unit is connected to a control unit, the control unit being configured to assign a control instruction to the user's gesture and change an operating mode of the lighting device according to the control instruction;

[0028] - a microphone unit designed to detect sounds Especially the user's voice commands.

[0029] The power supply unit can be designed to supply power to the lighting device for 10 to 30 minutes, particularly 20 minutes. For example, if there is a power outage in the operating room, the lighting device can operate autonomously via the power supply unit, independent of the house power supply, allowing, for example, the ongoing surgery to continue. Alternatively, or in addition to the power supply unit, it is conceivable that the lighting device includes a battery separate from the functional unit, which is housed in the base, for example. This allows the lighting device to operate during a power outage, even if the functional unit is not the power supply unit.

[0030] The gesture detection unit may comprise a camera designed to detect hand movements of a user of the lighting device and transmit relevant signals to the control unit. Thus, the lighting device can be operated, for example to adjust its brightness and / or lighting direction and / or focus, without the user having to touch the lighting device.

[0031] The lighting device may also include a data transmission module designed to send and / or receive information about the lighting device, in particular about the at least two functional units, to and / or from a data processing unit located outside the lighting device. This data transmission can be performed wirelessly, for example, via WLAN, Bluetooth, local wireless communication, mobile internet, or similar data transmission options. It is also conceivable that the data transmission occurs in the immediate vicinity of the lighting device, wirelessly to a receiving unit located there, from which the data is then transmitted via a wired connection to the data processing unit. Of course, the data transmission from the lighting device to the data processing unit can also be performed entirely via wired connections. This is particularly true when the data processing unit is located in the immediate vicinity of the lighting device, for example, within the hospital where the lighting device is installed.

[0032] The data sent and / or received via the data transmission module are suitable, for example, for:

[0033] - display the total runtime of the corresponding functional unit; and / or

[0034] - a unique identifier showing the corresponding functional unit; and / or

[0035] - transmitting a code of the respective functional unit, in particular a code which is unique to the manufacturer of the respective functional unit; and / or

[0036] -Displays the charging status of the corresponding functional unit.

[0037] At least one, and preferably all, data sent and / or received by the data transmission module can be stored in a log file, which can be stored, for example, in a memory unit of the control unit or already there. For example, a single log file can be used for multiple, and in particular all, functional units used with the lighting device, or a separate log file can be used for each functional unit used with the lighting device. Thus, for each functional unit that can be identified by the log file, for example, by a unique code / identifier, such as a serial number, the total operating time of the functional unit in the respective lighting device can be updated in real time. Furthermore, the log file can be used to track which functional units were used in the respective lighting device at which point in time and / or for how long. Alternatively or additionally, it is also conceivable to store the log file in a memory unit located within the lighting device.

[0038] In particular, the control unit of the lighting device can be designed to receive and evaluate the code of the corresponding functional unit so that the corresponding functional unit in the base body of the lighting device is only operated based on a permitted code, in particular stored in a memory unit of the control unit. Thus, if a functional unit not from the manufacturer of the lighting device is inserted into the base body, the use of the functional unit in the base body can be prevented based on the evaluation of the transmitted data.

[0039] Furthermore, if a functional unit exceeds a specified total operating time, and the manufacturer cannot guarantee correct operation of the functional unit, use of the functional unit in the base body can be prevented. A corresponding warning regarding the total operating time of the functional unit can be issued at least one predetermined interval before the total operating time is reached. This warning can be provided on a screen operatively connected to the lighting device and / or via a colored LED and / or acoustic signal on the functional unit itself, for example.

[0040] Preferably, at least one, and in particular all, functional units can be designed to transmit information about the respective functional unit, in particular information about the weight of the respective functional unit, to the lighting device. The information transmitted from the respective functional unit to the lighting device can also be used to adjust the function of a handle connected to the lighting device. Thus, in a point-type lighting functional unit, turning the handle can adjust the focus of the focal point; in a functional unit that emits only light in a predetermined spectrum (the width of which is significantly smaller than the spectral width of visible light), a change in the spectrum can be caused. Furthermore, in particular, but not exclusively, the lighting intensity emitted by a functional unit inserted into the base can be transmitted by the functional unit, for example, to an associated control unit. Since one regulatory requirement for lighting devices is that the lighting intensity at a distance of 1 m must not exceed 160,000 lx, the control unit can vary the light intensity, in particular the luminous flux, of at least one light module of the functional unit and / or the base in order to comply with this regulatory requirement.

[0041] In this case, the lighting device may further include a retaining device designed to positionably retain the lighting device in space, wherein the retaining device is designed to automatically readjust based on information transmitted from the functional unit to the lighting device, particularly the weight of the functional unit. Thus, when the lighting device uses a functional unit with a different weight than previously used, or operates without a functional unit, the aforementioned weight balance configuration can be automatically recalibrated. This can save the user time required for readjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings, wherein:

[0043] Figure 1 A side sectional view showing an embodiment of a lighting device according to the present invention; and

[0044] Figure 2 A perspective view showing a lighting device according to the present invention is shown. DETAILED DESCRIPTION

[0045] exist Figure 1 In the drawings, the lighting device according to the present invention is generally indicated by reference numeral 10. The lighting device 10 is Figure 1 1 and 2. The illuminating device 10 is shown in a side cross-sectional view, which includes a base body 12 and a plurality of light-emitting modules 14 arranged on the base body, the light-emitting modules being designed to emit light. In addition, in the embodiment shown here, the illuminating device 10 also includes two functional units 16.

[0046] Functional unit 16 (in Figure 1Only one of them can be seen here) is designed to be selectively inserted into a receptacle 18 of the base body 12. The corresponding functional unit 16 can be mounted on the base body 12 via a mechanical interface 20 designed accordingly to the functional unit 16, wherein the mechanical interface 20 matching the receptacle 18 can be designed as a simple, essentially cylindrical component in the embodiment shown here.

[0047] The mechanical interface 20 and the receptacle 18 matched thereto also ensure that the functional unit 16 can be separated from the base body 12, for example in order to replace it with another functional unit 16. It is therefore conceivable to provide an elastic element, such as a spring, on the receptacle 18, which preloads the respective functional unit 16 in the direction of removal from the receptacle 18.

[0048] In the embodiment shown, the functional unit 16 can be connected and / or disconnected from the receptacle 18 of the base body 12 without tools, but simply by being inserted into and removed from the receptacle 18 .

[0049] In one possible embodiment, one of the two functional units 16 can be a point-type lighting device with a more focused illumination area than the illumination area of ​​the light module 14 of the base body 12. The other of the two functional units 16 can be a laser light emitting unit that projects a specific pattern onto a surface. In the simplest case, the pattern is at least one point. Thus, the lighting device can be configured or adapted for the most diverse uses with varying requirements.

[0050] In addition to the mechanical interface 20, the lighting device 10 may also have an electrical interface 22, which is designed, for example, to supply power to the corresponding functional unit 16 accommodated in the receiving portion 18. It is also conceivable to transmit the signals generated by the functional unit 16 to the base body 12 of the lighting device 10 via the electrical interface 22 and, if necessary, further transmit them to the relevant control unit (not shown). To this end, Figure 1 and Figure 2 The housing 18 shown in FIG. 1 includes a corresponding electrical mating interface 24. Of course, the electrical interface 22 or the electrical mating interface 24 may also coincide with certain parts of the mechanical interface 20 or the housing 18, which are, for example, provided in the mechanical interface 20 and the housing 18 to prevent the corresponding functional unit 16 accommodated in the housing 18 from rotating.

[0051] The lighting device 10 includes a light exit surface 26, at which light emitted by the light module 14 can exit from the base body 12. On the side opposite the light exit surface 26, the base body 12 has a back surface 28. In the embodiment shown here, the receptacle 18 is arranged on the back surface 28 of the base body 12, thereby allowing the functional unit 16 to be inserted / removed at the back surface 28.

[0052] Figure 1 , a cover 30 is also shown. The cover 30 is inserted into an opening 32 arranged in the rear surface 28. The cover 30 can thus close the receptacle 18 and thereby seal the base body 12 in particular at the receptacle 18 with fluid. The cover 30 is designed here as a component separate from the respective functional unit 16. However, the cover 30 can also be fixedly connected to the respective functional unit 16 or even formed integrally therewith. In this way, each functional unit 16 can be equipped with its own cover 30 to close the receptacle 18.

[0053] The lid 30 can be connected to the receptacle 18 via a connecting device (not shown). For example, the receptacle 18 can include a protrusion designed to engage with a corresponding recess on the lid to retain the lid in the receptacle 18. Of course, the recess and protrusion can also be arranged on the other component, the receptacle / lid, or on both. For example, the recess can be designed and the lid 30 can be spring-loaded so that a combined pressing and rotating motion is required to release the lid 30 from the receptacle 18. This prevents the lid 30 from accidentally falling out of the receptacle 18.

[0054] Figure 1 and Figure 2 Also shown is a handle 34, which is connected to the base body 12 of the lighting device 10 on the side of the light exit surface 26. The base body 12 can be positioned in space using the handle 34. Furthermore, the handle 34 can be used to control the corresponding functional unit 16, for example, to change the corresponding function. Thus, it is conceivable that in a point-type lighting functional unit 16, turning the handle 34 can adjust the focus of the light spot, while in a functional unit 16 that emits only light within a predetermined spectrum, the spectrum can be changed.

[0055] exist Figure 2 FIG. 1 shows a perspective view of an illuminating device 10 according to the present invention. Figure 2 In the figure, two functional units 16 can be seen. The individual functional units 16 can be selectively inserted into a receptacle 18 of the base body 12 (see the dashed line from the functional unit 16 to the receptacle 18).

[0056] exist Figure 2 It can also be seen in FIG. 1 that at least some of the lighting modules 14 are accessible via openings 32 on the back surface 28 of the base body 12 , so that the openings 32 can simultaneously serve as access openings for maintenance and repair of the lighting modules 14 .

Claims

1. A lighting device (10) suitable for illuminating a surgical area, comprising: substrate (12); at least one light-emitting module (14) which emits light and is arranged on the substrate (12); as well as at least two functional units (16) having different functions from each other, the functional units being designed to be selectively connected to the base body (12) of the lighting device (10); Each of the functional units (16) is designed to be connected to and separated from the base body (12) in a repeatable manner, so that a predetermined functional unit (16) can be inserted into the base body (12) or replaced with another functional unit (16) as needed; Each of the functional units (16) has a mechanical interface (20), which is constructed essentially similarly with respect to all functional units (16) and is designed to engage with an adapted receptacle (18) on the base body (12) so that the corresponding functional unit (16) is fixed to the base body (12).

2. The lighting device (10) according to claim 1, characterized in that The base body (12) has a light exit surface (26) and a back surface (28) arranged opposite to the light exit surface (24), wherein light emitted by the at least one light emitting module (14) can be emitted from the base body (12) at the light exit surface, wherein the receiving portion (18) is arranged on the base body (12) to be connected to the functional unit (16) on the back surface (28).

3. The lighting device (10) according to claim 1 or 2, characterized in that At least one of the functional units (16) has an electrical interface (22), and the receiving portion (18) of the base body (12) has a corresponding electrical matching interface, which is designed to establish an electrical connection between the base body (12) and the corresponding functional unit (16) when the functional unit (16) is arranged in the receiving portion (18).

4. The lighting device (10) according to any one of the preceding claims, characterized in that The functional units (16) have substantially the same weight compared to one another.

5. The lighting device (10) according to the preceding claim, characterized in that At least one functional unit (16), in particular all functional units (16), have a weight of 0.3 kg to 2 kg, in particular 0.7 kg to 1.5 kg, preferably approximately 1 kg.

6. The lighting device (10) according to any one of the preceding claims, characterized in that The receptacle (18) of the base body (12) and the mechanical interface (20) of the at least two functional units (16) are designed to enable the corresponding functional unit (16) to be connected to the receptacle (18) of the base body (12) without tools and / or to be separated from the receptacle (18) of the base body (12).

7. The lighting device (10) according to any one of the preceding claims, characterized in that The functional unit (16) includes at least two of the following: - an optical detection unit for visible light; - Optical detection unit for UV light; - an optical detection unit for infrared light, in particular near-infrared light; - a transmitting unit for laser light; - an emission unit for emitting light corresponding substantially to the spectrum of at least one light module (14) of the lighting device (10), wherein the emission unit is designed in particular to emit light in a focused manner, thereby generating an illuminated area having a higher brightness than the illuminated area generated by the at least one light module (14); - an emitting unit for emitting light having a spectrum different from that of at least one light-emitting module (14) of the lighting device (10), in particular having a blue spectrum in the range of 460 nm to 480 nm and / or a green spectrum in the range of 500 nm to 550 nm, wherein the emitting unit is in particular designed to emit light in a focused manner, thereby generating an illuminated area having a higher brightness than the illuminated area generated by the at least one light-emitting module (14); - a power supply unit, the power supply unit being designed to supply power to the lighting device (10) so that the lighting device (10) can operate autonomously; - a gesture detection unit for detecting a user's gesture, wherein the gesture detection unit is connected to a control unit, and the control unit is designed to assign a control instruction to the user's gesture and change the operating mode of the lighting device (10) according to the control instruction; A microphone unit is designed to detect sounds, in particular voice commands of a user.

8. The lighting device (10) according to the preceding claim, characterized in that The power supply unit is designed to supply power to the lighting device (10) for 10 minutes to 30 minutes, in particular 20 minutes.

9. The lighting device (10) according to claim 7 or 8, characterized in that The gesture detection unit comprises a camera which is designed to detect hand movements of a user of the lighting device (10) and transmit relevant signals to the control unit.

10. The lighting device (10) according to any one of the preceding claims, characterized in that The lighting device (10) comprises a data transmission module, which is designed to send information about the lighting device (10), in particular about the at least two functional units (16), to and / or receive information about the lighting device (10) from a data processing unit arranged outside the lighting device (10).

11. The lighting device (10) according to the preceding claim, characterized in that The data sent and / or received by the data transmission module is applicable to: - displaying the total operating time of the corresponding functional unit (16); and / or - displaying a unique identifier of the corresponding functional unit (16); and / or - transmitting a code of the respective functional unit (16), in particular a code which is unique to the manufacturer of the respective functional unit (16); and / or - Displaying the charging status of the corresponding functional unit (16).

12. The lighting device (10) according to the preceding claim, characterized in that The control unit of the lighting device (10) is designed to receive the coding of the corresponding functional unit (16) and evaluate it so that the corresponding functional unit (16) in the base body (12) of the lighting device (10) can only be operated based on the permitted coding, in particular stored in a memory unit of the control unit.

13. The lighting device (10) according to any one of the preceding claims, characterized in that At least one, in particular all, of the functional units (16) are designed to transmit information about the respective functional unit (16), in particular information about the weight of the respective functional unit (16), to the lighting device (10).

14. The lighting device (10) according to the preceding claim, characterized in that The lighting device (10) further comprises a holding device, which is designed to hold the lighting device (10) in a positionable manner in space, wherein the holding device is designed to automatically readjust based on information transmitted from the functional unit (16) to the lighting device (10), in particular the weight of the functional unit (16).

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