Device and method for recording the use of an inserted implant

Abstract

The present invention relates to a device (1) for recording the use of one or more implants (8) inserted during surgery, the implants (8) having identifiers (10) on their implant surfaces (9). One or more implants are provided for surgery and can be used during said surgery. The device comprises a housing (2) having a housing interior (3) in which at least one light source (4) and at least one camera (5) are arranged for recording images of multiple implants (8) of a surgical set (6) before and after surgery, and an image evaluation device for evaluating images recorded before and after surgery by at least one camera (5) to identify one or more implants (8) inserted during surgery. According to the present invention, at least one light source (4) and at least one camera (5) are configured to reduce reflections on the implant surface (9) in order to adequately recognize the identifiers. The present invention further relates to a method using this type of device (1) and to the use of surface-coated implants (8).

Description

Technical Field

[0001] The present invention relates to a device for recording the use of one or more implants inserted during surgery, these implants having identifiers on the implant surface. One or more implants are provided for surgery and can be used during said surgery. The device has a housing having inside the housing at least one light source and at least one camera arranged for recording images of a plurality of implants of a surgical set before and after surgery, and an image evaluation device for evaluating the images recorded before and after surgery by at least one camera in order to identify one or more implants inserted during surgery.

[0002] The present invention further relates to a method for recording the use of one or more implants inserted during surgery, the implants having identifiers on the implant surface. One or more implants are provided for surgery and can be used during said surgery.

Background Art

[0003] In medical engineering, multiple implants have been developed for various surgeries. These implants enable the treatment of various fractures of bones or even the complete or partial replacement of joints affected by wear (specifically, knee joints or hip joints, etc.). Individual implants may have different complexities, for example, ranging from simple screws to complex multi-component implants having functions of moving and fixing individual components.

[0004] In medical surgery, efforts have already been made to optically track surgical instruments during surgery, as documented in US2013 / 0113929A1. This document discloses a system with multiple fixed cameras. These cameras cover different areas of the operating room and are connected to a data processing device, which allows for the identification of individual components of the surgical instrument set through the use of camera images. This information can then be used to provide instructions to the surgical staff as needed, depending on the situation. In this way, surgery is intended to become more efficient.

[0005] US2015 / 0250551A1 discloses a method and device for detecting the loss of individual components of a surgical instrument set. For this purpose, a tray having multiple compartments is provided for the surgical instruments to be stored. The tray is provided with an identifier for each component of the surgical instrument set to be stored, for example, in the form of a barcode. The tray may be scanned using a corresponding device having at least one camera, which allows for image evaluation to be used to determine whether one or more components of the surgical instrument set are missing.

[0006] In the case of implants, there have been attempts to make the aforementioned implants identifiable during surgery for various reasons; namely, regulatory reasons, which are addressed in DE69921864T2.

[0007] It is desirable to be able to accurately identify which one or more implants were inserted into the human body some time after surgery. This may be necessary, for example, to enable timely replacement if a particular batch is found to be defective. Another aspect is that implants inserted into or on the surface of a human or animal's body can be exposed to corrosion, even if they are only temporarily fixed in place. This can release substances into the body, and in some cases, these substances may remain even after the implant has been removed again. Despite this, there has been very little research on the effects of corrosive degradation of implants with such elements on the human or animal body. Thorough documentation can make it possible to build a suitable foundation, especially for long-term research.

[0008] Another aspect of desirable and accurate record-keeping is, for example, the legal issues that arise if an implant fails. Therefore, for liability purposes, it can be important to be able to associate the implant with a specific batch from the manufacturer of that implant. [Overview of the project]

[0009] Applicant WO2021 / 217189A1 provides a method and device for proper recording of implants. This provides a surgical set with implants, which is scanned using a camera and light source to record identifiers attached to individual implants, which can then be identified using appropriate image evaluation. This process is performed before and after the surgery. Which one or more implants were placed inside or on the body surface of the patient is determined from the corresponding difference recordings. Essentially, the device and method function reliably. The function of the camera moving with the light source essentially ensures that high-quality images can be recorded by the camera, thereby enabling accurate association in image processing. However, in the case of circular surfaces such as screw heads, recognition problems may arise in recognizing identifiers (usually containing a number of numbers and / or letters).

[0010] Starting with the prior art, the objective of the present invention is to further develop the types of devices mentioned at the beginning so that the above-mentioned devices can reliably recognize identifiers for multiple implants with a simple design.

[0011] A further object of the present invention is to specify the types of methods described above that can be carried out using simpler means without sacrificing reliability regarding the record of one or more implants that have been inserted.

[0012] The object of the present invention is achieved when, using the type of device described at the beginning, at least one light source and at least one camera are configured to reduce reflections on the implant surface in order to adequately recognize identifiers.

[0013] By using the device according to the present invention, reliable recognition of identifiers can be achieved.

[0014] As a result of the anticipated reduction in reflection, it may be possible to identify individual implant identifiers with very high reliability. Thus, at least one light source and at least one camera, preferably multiple light sources and multiple cameras, work together to reduce reflection compared to direct illumination of the implant by at least one light source. Therefore, at least one camera, preferably multiple cameras, may be arranged in a movable manner, or optionally in a fixed manner. It is also possible to combine a movable camera with a fixedly arranged camera. At least one light source, preferably multiple light sources, can be arranged so that the implant surface to be recorded by one or more cameras is not directly illuminated. As a result, the reduction in reflection can be specifically minimized. Therefore, the reduction in reflection means a situation in which the implant is illuminated from above by an equivalent light source. This is known, for example, from the prior art in reference WO2021 / 217189A1, in which the camera moves with the light source. Thus, according to the present invention, at least one light source and at least one camera are configured to reduce reflection on the implant surface. This desirable reduction occurs at the expense of illumination of the implant surface, which is undesirable for identifier recognition. According to the present invention, a suitable balance is achieved for a certain level of visibility of the identifier, such that reflection is sufficiently reduced by the reduction of reflection and the resulting decrease in illumination of the implant surface. In other words, it is also possible to consider a favorable balance between sufficient illumination and minimization of reflection.

[0015] Image evaluation is performed using methods known from the prior art. At least one camera is connected to the data processing system in a manner appropriate for this purpose, for example, via a wired or wireless connection. The recorded images are analyzed by the data processing system to identify the identifier of each implant, preferably to associate it with a specific location on the surgical set.

[0016] Image evaluation may be performed directly within or on the device, provided that the device is equipped with the corresponding means. Image evaluation may also be performed via a remotely located server. For this purpose, the device may be connected to the server wirelessly or via a fixed line. The device preferably includes a data processing device, such as a laptop or tablet computer, for on-the-spot processing of rapid identifier recognition. The data processing device may be externally integrated into the device on the housing to enable easy operation.

[0017] This device is typically designed to be hand-carried. Typical dimensions are determined by the surgical set to be examined, and for example, the length, width, and height may be 50cm x 35cm x 35cm.

[0018] Even if a single light source is sufficient, multiple light sources may be advantageously provided. These light sources may, for example, be arranged inside the housing at approximately equal intervals from one another, at least partially.

[0019] When multiple light sources are provided, these light sources may preferably be formed of LED light sources. When these light sources exist as LED light sources, they may be arranged as strips. Typically, the LED strips are arranged in a rectangular shape corresponding to the interior of the housing. Therefore, the LED strips may be positioned adjacent to the inner edges of the interior of the housing defined by the housing components. As a result, illumination can be performed from the inner wall of the housing toward the actual interior of the housing. For this reason, it is preferable that the LED strips, or possibly other light sources, be positioned in a plane below the plane into which the surgical set is inserted. In this way, indirect illumination of the implant surface is automatically achieved because the implant surface faces away from the direction of radiation from the light source.

[0020] At least one light source may be a point light source. Alternatively, at least one light source may be implemented in an elongated form. If multiple light sources are provided, these light sources may be implemented advantageously so as to be point-like, linear, or strip-shaped. This ensures the most uniform illumination possible within the housing. No specific type of light source is required; indirect illumination of the implant surface should be ensured.

[0021] In principle, one camera may suffice. However, when it is necessary to cover the entire cross-section inside the housing or the entire surgical set, it is advantageous to have multiple cameras, and it is preferable that their fields of view partially overlap. Using multiple cameras positioned or aligned with partially overlapping fields of view allows for the acquisition of high-quality output images to be processed or analyzed for subsequent image processing. Because these cameras record implants from different viewpoints in the partially overlapping area, it is possible to take into account that implants may have different heights, identifiers may be located in different positions, and / or the surfaces of individual implants may be inclined with respect to the optical camera axis. The more the individual fields of view of each camera partially overlap, the better the image evaluation results may be, and therefore the more reliable the results of this method may be. For convenience, all areas related to image acquisition for recording purposes can be covered by at least two cameras, preferably three or more. The upper limit is due to the usefulness for subsequent image processing. When three or four cameras cover a single area on the associated field of view, it is possible to obtain very good reliable results.

[0022] Preferably, in the case of a typical-sized surgical set, two or three cameras are provided and positioned at the upper end inside the housing. These cameras may be positioned to move. In this case, an actuation motor is provided to move the cameras, and the actuation motor is connected to the cameras to move them. The actuation motor is configured so that these cameras move together along the longitudinal axis of the device. Therefore, it is preferable that each of these cameras moves to record an image at a predetermined position along the longitudinal axis. For example, using a set of three cameras, the entire area inside the housing along the length and width can be captured with four recordings along the longitudinal axis at the predetermined positions mentioned above. This results in some overlap of the individual recorded images of the cameras along the longitudinal axis. In this way, it is possible to obtain a complete and clear image in the length and width directions of this area for image evaluation. Thus, the cameras move from one predetermined position to the next. However, in principle, it is also possible for the cameras to move continuously at a specific speed, thereby generating recorded images, which are then evaluated.

[0023] At least one camera can be positioned so that its optical axis is perpendicular to the surgical set. The surgical set is typically constructed to be flat to at least a considerable extent. These cameras are positioned in appropriate numbers and at appropriate distances from one another so that the area of ​​the surgical set in which the implant is placed is fully covered, and preferably, their fields of view partially overlap as described above. It is also possible to tilt the optical axes of the cameras so that they are not perpendicular to the surgical set.

[0024] For the simplest possible setup, it is preferable that the optical axes of at least one camera, or multiple cameras, are perpendicular to the plane into which the surgical set is inserted. Thus, the line of sight of the cameras is perpendicular to the surgical set. As previously mentioned, it is preferable that the light source be positioned below the surgical set and associated insertion area.

[0025] Preferably, at least one light source is fixed in place. This means that within the housing, the light source cannot be moved and its position cannot be changed in any other way. The light source may be swivelable to change or optimize its illumination settings and field of view. However, it is preferable that, once the light source is set, it cannot be moved or swiveled thereafter. In principle, at least one camera, or possibly more cameras, cannot swivel during surgery, but may be implemented to be swivelable to adjust appropriately according to the ongoing surgery.

[0026] In a particularly preferred modification, at least one light source is positioned to indirectly illuminate the implant. The at least one light source can be positioned below the insertion area of ​​the surgical set, thus illuminating the implant surface from below, which is captured by one or more cameras. As a result of this indirect illumination, the at least one light source and at least one camera are configured to reduce reflections on the implant surface in order to adequately recognize the identifier. Reflections on the implant surface can be prevented, or at least reduced, through the corresponding positioning of the at least one light source within the housing. Such reflections can be particularly detrimental and may result in the inability to identify the identifier. This is significantly reduced by indirect illumination. Therefore, advantageously, the at least one light source is positioned such that its direction of emission faces the field of view of at least one camera. Furthermore, components that generate scattered light may be positioned within the housing. The more the generated light directed toward the implant surface is diffused, the less reflection occurs. This can also be achieved, for example, by appropriately fitting the inner surface of the housing in such a way that the housing is embodied in a rough, matte surface. For this purpose, for example, a plastic lining that is as bright as possible (preferably white) is suitable, which has a suitable surface roughness or multiple bright (preferably white) fabrics. In connection with this, light-absorbing elements may be provided that are positioned in the lateral and / or rear region of at least one camera. In this way, the quality of the recorded images can be further improved, which leads to more reliable recognition of identifiers by image evaluation.

[0027] Other types of indirect lighting are also possible, for example, by generating sufficiently diffused light through a sufficiently strong light source (or possibly multiple light sources) and appropriate means (e.g., by scattering it over a rough surface).

[0028] In another variant, two polarizing filters may be arranged between at least one camera and at least one light source. By doing so, it is also possible to reduce the reflection on the implant surface in an excellent manner. Accordingly, these polarizing filters may be inclined with respect to each other at an angle of 10° to 85°, preferably 50° to 82°, particularly 60° to 80°. This setting may be selected so as to optimize the amount of light hitting the camera on the one hand and, on the other hand, to reduce, specifically minimize, the reflection on the implant surface. In this way, a balanced harmony between the light hitting the camera and the reduction or minimization of reflection is achieved.

[0029] The housing is preferably embodied with a drawer for accommodating the surgical set. Accordingly, this drawer may be embodied such that the surgical set can be inserted into the recess of the drawer. In this way, it can be ensured that the surgical set is accurately in a predetermined position. For this purpose, this recess is basically embodied to correspond to the outer diameter of the surgical set, and the surgical set is positioned in the drawer with an edge at its upper end. The implant is arranged on the surgical set so as to be loosely or removably fixed. Accordingly, an implant within the scope of the meaning of the present invention is a component that can be inserted into the body surface and / or body of a human or animal during surgery, particularly for treating fractures or the same kind of symptoms. These may be relatively small individual components, for example, bone screws, or screws for fixing bone plates. However, these may be bone plates, intramedullary nails, wires, or other usually metallic components used for treating fractures, corrective surgeries, or other purposes.

[0030] The housing is advantageously embodied using an external housing component capable of completely closing the inside of the housing. Completely closing the inside of the housing may be important for preventing reflection. If light enters from the outside, this may cause unwanted reflection on the implant surface.

[0031] Therefore, the housing may be realized to have a receiving opening for a surgical set, which can be closed by a drawer that houses the surgical set. The drawer can then be mounted on a suitable sliding rail so that it can be easily opened and closed. The interior of the housing can also be completely closed to prevent light from entering from the outside, except for the opening for the drawer. Therefore, there remains a possibility that light may enter only the area of ​​the opening. To eliminate this possibility as much as possible during surgery in progress, a suitable seal may be provided in the area of ​​the opening and / or the drawer.

[0032] Another object of the present invention is provided in which an implant is provided in which the implant surface is coated in at least a portion of the area by the type of method described at the beginning, and a device according to the present invention is used.

[0033] The method according to the present invention offers the advantage of enabling accurate recording of implants inserted during surgery using simple means. For this purpose, a device according to the present invention is used. This type of device is configured to be suitable for performing the method. Since the implant surface is also coated, the advantages of the device according to the present invention have a particular effect. In the method according to the present invention, reflections on the implant surface are thus reduced, in particular, to a minimum, in order to adequately recognize the identifier. For this reason, at least one light source and at least one camera are appropriately arranged. This also applies accordingly when multiple light sources and / or multiple cameras are provided.

[0034] In a further aspect, the present invention relates to the use of surface-coated implants for recording the use of one or more implants inserted during surgery using image recognition. With surface-coated implants, it has been shown that image recording using a camera and subsequent image recognition using appropriate image processing software can be performed with high quality, thereby enabling accurate recording of implant use.

[0035] The advantages of the concept according to the present invention are particularly applicable when a surface-coated implant is inspected in a device according to the present invention. Thus, the method according to the present invention is particularly applicable. On the one hand, through the proper positioning of at least one light source and on the other hand, at least one camera, the amount of interfering reflection from incident light can already be reduced. If a surface-coated implant is provided at the same time, this further contributes to the reduction of undesirable reflection of light. Conversely, therefore, higher intensity light can be used without producing undesirable reflections that would impede the visibility of the identifier.

[0036] Further features, advantages, and effects of the present invention are concluded from the exemplary embodiments described below. The drawings referenced therein are as follows: [Brief explanation of the drawing]

[0037] [Figure 1] This diagram shows a schematic representation of a device with a drawer extended. [Figure 2] This diagram shows a schematic representation of the device in Figure 1, with the drawer pushed in. [Figure 3] This figure shows a first modified example of the device according to the present invention. [Figure 4] This is a diagram showing the implant in the surgical set. [Figure 5] Figure 3 shows the lighting conditions during recording using the device shown. [Figure 6] This figure shows a further modified example of the device according to the present invention. [Figure 7] This figure shows the implant and lighting conditions during recording using the device shown in Figure 6. [Figure 8] This diagram shows individual implant screws being recorded using a camera. [Figure 9] This figure shows a magnified portion of the photograph in Figure 8. [Figure 10]This figure shows a schematic diagram of a further modified example of the device according to the present invention. [Figure 11] This figure shows a schematic diagram of a further modified example of the device according to the present invention. [Modes for carrying out the invention]

[0038] Figure 1 shows a highly schematic representation of the device 1 according to the present invention. The device 1 comprises an external housing 2 that is at least substantially (preferably completely) closed so that light cannot enter the housing interior 3 except for an opening for the drawer 7, which will be described below. The drawer 7 is mounted inside the housing 2 (specifically, mounted so as to be movable). For this purpose, the housing 2 has a sufficient opening through which the drawer 7 can be pulled out. The surgical set 6 in which the implant is placed is insertable into the drawer 7. The drawer 7 may then be pushed into the housing interior 3, closing the housing 2 on one side of the drawer 7. For this purpose, the drawer 7 may also be embodied with a sufficiently widened edge that stops at the outer surface of the housing 2 and prevents the drawer 7 from moving any further. Figure 2 shows the drawer 7 in the pushed-in position.

[0039] The situations shown in Figures 1 and 2 generally indicate that the drawer 7 containing the surgical set 6 and the implant 8 placed therein is entirely located inside the housing 2, and that the housing 2 is substantially closed so that light cannot enter the interior 3 from the outside. The device 1 does not necessarily have to be equipped with a drawer 7. The surgical set 6 can also be introduced into the interior 3 of the housing from above. In this case, a lid is provided to close the housing 2 at its upper end as an external housing component. Other methods of introducing the surgical set 6 into the interior 3 of the housing are also possible. The important thing is that, after the surgical set 6 with the implant 8 installed or positioned is introduced, light is basically not allowed to enter the interior 3 of the housing. These descriptions regarding the possible designs of the housing 2 are generally applicable and, in particular, to the following embodiments.

[0040] Figure 3 shows a first modification of device 1 according to the present invention. In addition to a housing 2 that closes the interior 3 of the housing with a drawer 7 located therein (the drawer 7 carries the surgical set 6 and implant 8), there are multiple cameras 5 and light sources 4. Polarizing filters 11 are positioned in front of both the light sources 4 and the cameras 5, respectively. The polarizing filters 11 are set up so that the light initially emitted from the light sources 4 and linearly polarized by the polarizing filters 11 (this light is directed toward the implant 8 and reflected therefrom) is filtered out to a considerable extent. In this way, interfering reflections in the cameras 5 are removed. Nevertheless, in order to obtain a sufficiently meaningful image, the polarizing filters 11 are not in a relatively tilted position (where these polarizing filters 11 make up a 90° position) that produces a dark image, but rather at an angle of less than 90° (e.g., 50° to 75°). The optimal conditions can be found relatively easily by changing each polarizing filter 11. The cameras 5 are connected to an image processing unit (not shown), which may be incorporated inside the housing 2 of device 1. Using an image processing unit, images recorded by the camera 5 can be processed so that they can recognize and store the identifier 10 placed on the implant surface 9. However, in principle, the image processing unit may be located outside the housing 2 as a separate unit.

[0041] Figure 4 shows the corresponding record, where two implants 8 are positioned on the base. As can be seen from the figure, a relatively small identifier 10 is clearly recognizable on the implants 8. Images recorded by camera 5 can be evaluated using image processing, which uniquely identifies each implant 8. This processing is performed before and after the surgery. By evaluating the corresponding images and identifying differences, these implants 8 inserted during the surgery are identified. It is possible that an implant 8 may be lost during surgery and subsequently mistakenly associated with a patient. However, this is not significant because the implants 8 are not implanted on or inside the patient's body surface. All implants 8 implanted on or inside the patient's body surface are recorded and can be tracked for many years.

[0042] It is particularly beneficial if the implant 8 is surface-coated. This is clearly shown in the example in Figure 5 (the various screws visible in the upper right of Figure 5). Surface-coated implants 8 or screws with a certain roughness, and their identifiers 10, can be identified without difficulty using camera recording and image recognition, whereas this is impossible, partially or entirely, for uncoated screws because they reflect light excessively under these specific conditions.

[0043] Figure 6 shows a further modification of the device 1 according to the present invention. In this case, the light source 4 and the camera 5 are again fixedly arranged inside the housing 3. However, with respect to radiation characteristics, the light source 4 is positioned with its back to the field of view of the camera 5, so there is no possibility of light emitted from the light source 4 directly hitting the camera 5. Furthermore, the inside of the housing 3 is provided with individual components (not shown in more detail) that cause the light emitted from the light source 4 to be scattered very strongly. For this purpose, the inner surface of the housing 2 may be appropriately embodied, for example, with a very rough surface. This causes the light, which is more or less directed by the light source 4, to be scattered very strongly. This prevents reflection on the implant surface 9 to at least a considerable extent. This is shown as an example in Figure 7. The identifier 10 on the implant 8 is clearly visible, and as a result, the unique identification of the implant 8 is possible before surgery and, if the implant 8 is not inserted, after surgery. Here again, evaluation is performed using an image processing unit that may be incorporated into the housing 2 and functions as described above.

[0044] In the case of device 1 shown in Figure 6, if device 1 is used in combination with a surface-coated implant 8, it is also useful. As can be seen from Figure 8, the uncoated implant 8 (in this case, in the form of a screw) still has a very strong tendency to reflect in the case of diffuse incident light. This can be avoided with a surface-coated implant 8. As shown in the enlarged portion of Figure 9, the identifier 10 is still almost invisible with an uncoated screw, but this is possible without any problems with a surface-coated implant 8 or screw.

[0045] Figures 10 and 11 show particularly preferred modifications of the device 1 according to the present invention. Unlike the embodiments described so far, the device 1 is embodied using a movable camera 5 (usually two or three cameras 5) positioned at the upper end of the device 1. These cameras 5 are connected to an actuation motor 12 that moves the cameras 5 synchronously along the longitudinal axis X of the device 1. The cameras 5 record images of the surgical set 6 and the implant 8 housed therein at predetermined positions. As can be seen from Figure 10, the individual light sources 4 are embodied in the form of LED strips, positioned below the plane into which the surgical set 6 is inserted, and emitting light upward. The surgical set 6 may be introduced into the housing interior 3 using, for example, a drawer 7, as has been described so far for other embodiments. In this way, the implant surface 9 is illuminated indirectly from below. In Figure 11, it can be seen that the central part of the housing interior 3 is shielded from the light sources 4 by a light scattering means 13 (for example, called a photo cloth). In this way, not only is indirect illumination of the implant surface 9 achieved, but the available light is further scattered before it enters the center of the housing interior 3, thereby creating diffuse illumination on the surface of the implant 8. Thus, reflections are reduced. If the implant 8 is also surface coated, reflections can be minimized to such an extent that even very complex identifiers can be recognized accurately using the images recorded by the camera 5.

Claims

1. A device (1) for recording the use of one or more implants (8) inserted during surgery, wherein the implants (8) have identifiers (10) on their implant surfaces (9), the one or more implants being provided for surgery and available for use during the surgery, and the device (1) comprising an internal housing (3) having at least one light source (4) and at least one camera (5) arranged for recording images of the multiple implants (8) of a surgical set (6) before and after the surgery, and an image evaluation device for evaluating the images recorded before and after the surgery by the at least one camera (5) to identify the one or more implants (8) inserted during the surgery, wherein the at least one light source (4) and the at least one camera (5) are configured to reduce reflections on the implant surface (9) in order to adequately recognize the identifiers.

2. The device (1) according to claim 1, characterized in that a plurality of light sources (4) are provided.

3. The device (1) according to claim 1 or 2, characterized in that the at least one light source (4) is a point light source (4).

4. A device (1) according to one of claims 1 to 3, characterized in that a plurality of cameras (5) are provided, and their fields of view preferably partially overlap.

5. The device (1) according to one of claims 1 to 4, characterized in that the at least one light source (4) and / or the at least one camera (5) are arranged in a fixed manner.

6. The device (1) according to one of claims 1 to 5, characterized in that at least one light source (4) is arranged for indirect illumination of the implant (8).

7. The device (1) according to claim 6, characterized in that the at least one light source (4) is arranged such that its radiation direction faces the field of view of the at least one camera (5).

8. The device (1) according to claim 6 or 7, characterized in that a component for generating scattered light is arranged inside the housing (3).

9. The device (1) according to one of claims 6 to 8, characterized in that a light-absorbing element is provided in the lateral and / or rear region of at least one camera (5).

10. The device (1) according to any one of claims 1 to 4, characterized in that two polarizing filters (11) are arranged between the at least one camera (5) and the at least one light source (4).

11. The device (1) according to claim 10, characterized in that the polarizing filters (11) are tilted relative to each other at an angle of 10° to 85°, preferably 50° to 82°, and particularly 60° to 80°.

12. The device (1) according to one of claims 1 to 11, characterized in that the housing (2) is embodied having a drawer (7) into which the surgical set (6) can be inserted.

13. The device (1) according to one of claims 1 to 12, characterized in that the housing (2) is embodied by having an external housing component that can completely close the inside of the housing (3).

14. A method for recording the use of one or more implants (8) inserted during surgery, wherein the implants (8) have identifiers (10) on their implant surfaces (9), wherein the one or more implants (8) are provided for surgery and are available for use during the surgery, and are covered in at least a portion of the implant surface (9), and a device (1) according to one of claims 1 to 13 is used.

15. Use of surface-coated implants (8) for recording the use of one or more implants (8) inserted during surgery using image recognition.

Images