Integrated RFID tag holder

Abstract

The present invention relates to a medical device having an instrument body, which is provided with an RFID tag, in particular a glass tag, wherein an underlying tag holder is arranged and configured to accommodate the RFID tag in a fixed manner, so that the RFID tag is exposed to the instrument environment through an opening formed in the surface of the instrument body, but is set back relative to the instrument body surface in the direction of the instrument body interior, preferably to avoid protruding beyond the instrument body surface, wherein the underlying tag holder with the RFID tag is at least partially surrounded by a separate metal shield having a signal-transmissive shielding opening, wherein the shielding opening forms an opening toward the instrument environment. The present invention also relates to a medical processing system and a method for installation.

Description

Technical Field

[0001] The present invention relates to a medical device for equipping a medical instrument with an RFID tag, the medical device comprising a holder or an RFID tag carrier, which is configured and adapted to receive the RFID tag. Furthermore, the present invention relates to a medical processing system and a method for mounting the same. Background Art

[0002] Medical (marking) devices with RFID tags are known. For example, EP 3 193 284 A1 discloses an RFID tagging element for assembling surgical instruments, which can then be applied to the surface of such surgical instruments. Here, the RFID tagging element consists of a metal support with a non-conductive cover, in the interior of which an RFID chip is incorporated. Furthermore, one side of the metal support is attached to the surgical element, for example, by welding.

[0003] WO 2015 / 177 538 A1 also discloses an RFID tag arrangement in which a radiofrequency-transparent cover is attached to a metal support, wherein an RFID chip is accommodated in a cavity formed jointly by the two structural elements. The metal support is subsequently attached to a surgical element on the surface side.

[0004] Although such RFID tags are relatively small components, the prior art subsequently installed RFID tag arrangements / devices create additional surfaces for contaminants to adhere to, and are also disadvantageous when handling surgical instruments. The additionally installed RFID tags can create gaps and crevices where bacteria or the like can accumulate, which is of course highly disadvantageous in medicine. Furthermore, the subsequently installed RFID tags may restrict the handling of ergonomically designed surgical instruments and, in the worst case, may create corners and edges where the surgeon's gloves could be damaged, perforated, or torn upon contact.

[0005] Of course, in principle, it is possible to place an RFID tag or a corresponding (marking) device on the corresponding medical instrument at a location where the desired negative impact on the instrument's operation is minimal. However, this greatly limits the variety of localization possibilities depending on the instrument type, and may require tolerance for, for example, degradation in data transmission capacity.

[0006] Another disadvantage of the prior art is that passive RFID tags, due to their somewhat limited transmission range, must be placed at a short distance from the reader. For this reason, in the prior art, RFID tags are often applied only to the outer surface of the surgical instrument to keep the distance between the RFID chip and the reader as short as possible. For the reasons mentioned above, it is important to ensure that the outer surface provided for this purpose is located at a position on the instrument that has only a minimal impact on instrument operation while still allowing for adequate reading quality.

[0007] Therefore, it has been found that not all medical instruments are suitable for subsequent installation of RFID tags according to current methods. Summary of the Invention

[0008] Therefore, the object of the present invention is to provide a medical device or medical / surgical instrument (of any design) with an RFID tag, a medical processing system, and a method for installation that ensures good and safe operation both with respect to the device's own characteristics and the data transmission characteristics of the RFID tag. A further object of the present invention is preferably to ensure good cleaning and / or disinfection of the device according to the present invention or a medical instrument equipped with the device. An additional object of the present invention is also preferably to ensure improved reception of an inserted / installed RFID tag.

[0009] The aforementioned object is achieved by the medical device or medical / surgical instrument according to the invention.

[0010] The core of the present invention is essentially that the medical instrument to be assembled is constructed or arranged in the form of an (instrument-integrated) receiving depression or recess, preferably in the form of a groove / slit or in the form of a preferably slit-shaped through-through, at an individually selected surface position (particularly suitable for interference-free data transmission) in an underlying instrument cavity with the aid of a holder, wherein a label carrier / holder, preferably having a receiving depression or recess in the form of a groove / slit, is inserted into this cavity.

[0011] Preferably, the depth of the receiving recess relative to the corresponding device surface and its dimensions (width and height) are selected such that a (unique) RFID tag can be inserted / placed into the receiving recess in the manner of a battery compartment, wherein the RFID tag, on its outer shell side, is closed (flush) at most on the plane of the corresponding device surface or even recessed relative to this plane, that is, retracted into the receiving recess (so-called bottom-mounted arrangement). In this way, the surface structure of the device remains essentially unaffected (without the RFID tag protruding / projecting above the device surface), while the data transmission properties are nevertheless (maximally) retained.

[0012] In a preferred embodiment, the medical device therefore has a holder which is integrated into or (additionally) can be inserted into the body of the medical instrument, which holder is or forms the aforementioned receiving recess which is open on the surface of the medical instrument and is provided and adapted to receive at least one (unique) RFID tag.

[0013] In other words, the medical device includes a holder for at least one RFID tag, which is integrated into the medical device or (additionally) inserted into the medical device. This means that the holder according to the present invention does not affect the normal (external) shape of the medical device due to the subsequently installed RFID tag. Instead, the RFID tag holder is integrated into or arranged below the outer surface of the medical device. In other words, the holder is integrated / mounted / configured / molded (hereinafter simply referred to as "integrated") into the housing / shape / structure / body (hereinafter simply referred to as "body") of the medical device or is integrated / inserted into the body of the medical device. Here, the holder can be integrated into the body of the medical device itself as a single piece of material / composed of a single component together with the medical device, i.e. as a recess / hole / groove / milled hole / cavity / depression (hereinafter also referred to as simply a receiving recess) (wherein, in this case, the receiving recess formed in the device body and the (label insertion) opening constructed on the surface of the device body are essentially adapted to the shape of the label) or the holder can be integrated / inserted into the body of the medical device (e.g., a cavity in the medical device) as itself / a separate component (label carrier) (wherein, in this case, the shape of the (signal passage) opening constructed on the surface of the device body can be essentially universal, since the separate holder is already equipped with the label and the holder has already been introduced into the cavity of the medical device (possibly via a separate channel)).

[0014] In other words, the medical device or the device body or a part of the device itself can be constructed with a label receiving recess as a holder, or a separate label carrier can be provided with a receiving recess constructed in the label receiving recess as a holder, which label carrier is inserted into a (possibly already existing) cavity in the medical device, wherein the medical device in this case has an opening / perforation leading to the cavity, the RFID tag being located in the area of ​​the opening / perforation when the holder is inserted.

[0015] In this case, the underlying tag holder with the RFID tag is at least partially surrounded by a separate metal shield with a signal-permeable shield opening, wherein the shield opening forms an opening toward the device's surroundings, in particular a radially outward opening. This improves the data transmission quality and increases the possible transmission distance.

[0016] Preferably, the RFID tag is always mounted subsurface (ie, set back relative to the surface of the device) such that the RFID tag is positioned below the opening and does not protrude beyond the opening.

[0017] Preferably, the medical instrument is a surgical instrument, a monopolar HF instrument, a bipolar HF instrument, an ultrasonic instrument, an electrosurgical instrument or a purely mechanical instrument, a surgical clamp, a surgical forceps, a container, surgical scissors, a scalpel, etc. Particularly preferably, the medical instrument is a handpiece with an integrated motor and / or a tool that can be coupled to a handpiece.

[0018] More preferably, the RFID tag is an RFID transponder for storing information pertaining to a specific object (in this case, a medical instrument). The so-called "identifier" can be personalized according to the requirements of the individual procedures. Preferably, the RFID tag comprises:

[0019] - at least one microchip, preferably with a diameter of several millimeters,

[0020] - at least one antenna, preferably in the form of a coil,

[0021] at least one carrier or housing, wherein the housing is preferably waterproof and / or gas-tight and preferably protects the transponder electronics from environmental influences,

[0022] In the case of an active RFID tag, at least one energy source is additionally included, preferably a battery / accumulator or a capacitor.

[0023] In a passive transponder, energy is supplied externally via an antenna. Preferably, the RFID tag of the present invention is a passive RFID tag. Preferably, the RFID tag also has a (rod-shaped) ferrite core with a coil wound around it. Preferably, the RFID tag can be configured as an NFC tag or NFC chip (Near Field Communication).

[0024] The RFID tag is designed and adapted to store, in particular in encrypted form, at least one of the following information or to be characterized by the following stored data:

[0025] - general condition,

[0026] - Lifespan / End of Life,

[0027] - maintenance intervals,

[0028] - performance and suitability for subsequent operations,

[0029] - Inadequate product maintenance and possible product damage,

[0030] - Excessive temperatures and possible product damage,

[0031] - Item number,

[0032] -Serial number,

[0033] -Customer number.

[0034] Preferably, in the present medical device, at least one RFID tag is incorporated into the holder or the receiving recess. Furthermore, the RFID tag preferably has a cylindrical shape with rounded ends. In other words, the RFID tag is preferably already contained / installed / introduced into the medical device. Furthermore, the RFID tag preferably has a pill-shaped shape.

[0035] More preferably, the receiving recess in the medical device or the tag carrier has the shape of an elongated slot or groove adapted to receive the preferably cylindrical / pill-shaped RFID tag "flatly", ie in the manner of a (flat) battery compartment.

[0036] Preferably, the RFID tag has an outer surface / housing made of a radio frequency-transmissive, and further preferably waterproof and / or airtight, material. In other words, the RFID tag housing is made of a radio frequency / signal-transmissive material, such as glass, ceramic, plastic, thermoplastic, thermosetting plastic, general synthetic material, and / or silicone. It is particularly preferably made of a non-metallic material, with which the ferrite core, the coil wound around the ferrite core, and the chip are cast and encapsulated.

[0037] In principle, the geometry and material of the medical device and the RFID tag or their body as well as the orientation of the receiving recess relative to the surface of the corresponding device can be freely selected. However, preferably, the receiving recess is parallel to the RFID tag, in particular the coil of the RFID tag, so that the RFID tag is oriented parallel to the external surface of the body of the medical device in its longitudinal direction (i.e. "flat"). The receiving recess can optionally remain free / open to the outside or be filled / closed with a signal-permeable material. In other words, the receiving recess or the opening constructed in the medical device for the receiving recess can be provided with or without a cover made of a signal-permeable material. Finally, the RFID tag itself can already be shaped in the form of a closure cover so that as the RFID tag is inserted into the receiving recess, the receiving recess or its opening is closed to the outside (watertight / airtight) by the RFID tag itself.

[0038] The RFID tag or the cover can be flush / flat / closed / flush with the (external) surface of the medical device. As mentioned above, the cover is preferably made of a radiofrequency-transmissive material and more preferably seals the receiving recess / holder on / with the outer surface of the medical device in a waterproof and / or airtight manner. In addition, in the case of a separate label carrier, the opening / perforation in the device that connects the device cavity to the outside and the possible associated cover can of course have any geometric shape, because the additional separate holder / label carrier is inserted into the device cavity as an adapter, wherein a receiving recess adapted to the RFID tag is constructed in the label carrier (that is, no integral receiving recess is formed in the medical device itself). In this case, the opening is no longer used to introduce the RFID tag into the receiving recess (as would necessarily happen in the case of an instrument-integrated receiving recess), but only serves as an input / output (passage) for the radiofrequency signal.

[0039] If a signal-permeable core and / or support is selected as the tag carrier / holder for the RFID tag (e.g. thermoplastic, thermosetting plastic, general synthetic material, silicone, etc.), the reading and writing distances are optimized by a metal shield / reflector which at least partially surrounds the carrier (the metal shield / reflector separates the RFID tag from the read / reader / writer device (hereinafter also referred to as simply the reader device)), wherein a geometrically defined opening is provided in the region of the receiving recess in the separate tag carrier. In other words, in one embodiment, the holder / tag carrier can be constructed as a signal-permeable core (e.g. synthetic material), which is located in the medical instrument or is inserted into the cavity of the instrument. The holder (receiving recess in the tag carrier) is provided here and is adapted to accommodate at least one RFID tag.

[0040] Furthermore, preferably, the opening of the holder, i.e., the opening of the receiving recess integrally formed in the instrument body or the opening / slit / perforation formed in the instrument, has a (slit) width corresponding to the product of the coil diameter and the ideality factor when a separate holder / tag carrier is used as a passage for the radio signal, wherein the ideality factor is in the range of 1.3 to 2.2, more preferably in the range of 1.6 to 1.9, and particularly preferably 1.75. In other words, the opening in the medical instrument parallel to the RFID tag has a width greater than the diameter of the RFID tag and / or the coil of the RFID tag.

[0041] Furthermore, preferably, the opening of the holder, in the case of an integrated receiving recess in the instrument body, or the opening / slit / perforation formed in the instrument for passage of the radio signal, in the case of a separate holder / tag carrier, has a length of -30% to +50% of the total length of the ferrite core, further preferably of 0% to +30% of the total length of the ferrite core, and particularly preferably of +15% of the total length of the ferrite core. In other words, the opening in the medical instrument parallel to the RFID tag preferably has a length greater than the length of the ferrite core and / or the RFID tag.

[0042] Furthermore, the RFID tag preferably uses a frequency band in the range of 12 to 15 MHz, advantageously in the range of 13 to 14 MHz, further preferably in the range of 13.4 to 13.7 MHz, and particularly preferably in the range of 13.56 MHz.

[0043] Furthermore, the present invention preferably relates to a system comprising a medical device having the above-described features and a reader device that can be coupled to the medical device. In other words, the medical device can be read by the reader device, which can be placed in direct proximity to the RFID tag, i.e., at a distance of less than one centimeter. In medical devices having interfaces, such as for air supply, power supply, and / or data exchange, the reader device can be installed in a plug / socket that can be coupled to a mating component on the medical device.

[0044] In addition, the present invention also relates to a method for installing a medical device according to the present invention. With regard to the method for installation, the object of the present invention is solved by the method according to the present invention. Here, a step of positioning the RFID tag, the medical device and the metal shield relative to each other is first performed. In particular, the coupling section at the end of the medical device or the device body has a longitudinal axis / axial axis, and the metal shield is preferably coaxially positioned in its extension. Thereafter, the RFID tag is placed in the underlying tag holder of the medical device provided for the RFID tag, in particular inserted in the radial direction, preferably pressed into the underlying tag holder in the radial direction. In addition, preferably, a step of rotating the metal shield around the longitudinal axis / axial axis of the medical device can be performed until the signal-permeable shielding opening and the RFID tag are in the same position in the circumferential direction. Viewed in the direction of the longitudinal axis, the shielding opening and the RFID tag are at the same angle to each other in the circumferential direction or in a radial extension. Finally, the metal shield is pushed onto the medical device in the axial direction (in the direction of the longitudinal axis of the section of the device body that accommodates the RFID tag) so that the shield opening and the RFID tag are arranged relative to each other in the radial extension and, in particular, at the same axial position, and the RFID tag is securely fixed in the medical device by the metal shield. Preferably, the method may include the step of securing the metal shield to the medical device or the device body.

[0045] According to a preferred embodiment, the method can further include the following steps, in particular before the pushing step: positioning the signal-permeable cover relative to the metal shield; inserting the cover into the signal-permeable shield opening by moving the cover axially into the metal shield until radially inside the metal shield and radially outward into the shield opening, so that the cover is inserted into the shield opening, and after the step of pushing the metal shield, the cover is captively fixed in position in the medical device. Due to the coordinated geometry of the cover, which has an undercut relative to the shield opening, the cover cannot be moved outward in the radial direction or perpendicular to the longitudinal axis and is captively held because after the pushing step, the RFID tag rests radially inwardly and the cover strikes the edge of the shield opening in the axial direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The invention will be explained in more detail below with reference to preferred exemplary embodiments and the accompanying drawings.

[0047] Figure 1 is a diagram for explaining an RFID tag that can be used according to the present invention;

[0048] Figure 2is another diagram for explaining an RFID tag that can be used according to the present invention;

[0049] Figure 3 is a diagram for explaining an example of a medical device having an RFID tag integrated into the body of the medical device;

[0050] Figure 4 is another diagram illustrating an example of a medical device having an RFID tag integrated into the body of the medical device;

[0051] Figure 5 is another diagram illustrating an example of a medical device having an RFID tag integrated into the body and an outer housing;

[0052] Figure 6 is another diagram illustrating an example of a medical device having an RFID tag integrated into the body and an outer housing;

[0053] Figure 7 is a diagram for explaining an example of a medical device having an RFID tag and a cover integrated into the body of the medical device;

[0054] Figure 8 is a diagram for explaining an example of a medical device having an RFID tag and a cover integrated into the body of the medical device;

[0055] Figure 9 is a diagram illustrating an example of a medical device having a holder integrated into the body of the medical device;

[0056] Figure 10 Has an RFID tag integrated into the holder Figure 9 Illustration of the retainer;

[0057] Figure 11 is having a cover on the retainer Figure 9 An illustration of an RFID tag in a holder;

[0058] Figure 12 is another diagram illustrating an example of a medical device having an RFID tag integrated into the body of the medical device;

[0059] Figure 13 is another diagram for explaining an example of a medical device having an RFID tag integrated into the body of the medical device, the RFID tag being loaded with a spring force;

[0060] Figure 14 is another perspective view illustrating an example of a medical device having an RFID tag integrated into the body of the medical device;

[0061] Figure 15 yes Figure 14 A side view of a medical device;

[0062] Figure 16 is a diagram for explaining an example of a system consisting of a medical device and a coupler that can be coupled to the medical device in a separated state;

[0063] Figure 17 is a diagram for explaining an example of a system consisting of a medical device and a coupler that can be coupled to the medical device in a connected state;

[0064] Figure 18 is a diagram for explaining an example of a system consisting of a medical instrument and a reading device;

[0065] Figure 19 yes Figure 18 Detailed view of

[0066] Figure 20 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0067] Figure 21 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0068] Figure 22 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0069] Figure 23 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0070] Figure 24 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0071] Figure 25 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0072] Figure 26 is a diagram for explaining an example of a medical device having an RFID tag holder;

[0073] Figures 27 to 31 A perspective partial view of a medical instrument according to a further preferred embodiment is shown in each case, wherein the step-by-step assembly of the medical instrument according to the method for mounting according to the preferred embodiment is illustrated. DETAILED DESCRIPTION

[0074] The following describes embodiments of the present disclosure based on the associated figures.

[0075] Figure 1 is a diagram for illustrating an RFID tag 2 that can be used according to the present invention. In addition to commercially available matches, RFID tags 2 of various sizes, in particular so-called glass RFID tags, are shown. The RFID tag 2 thus has a cylindrical shape similar to a rod or pill with rounded ends. Such RFID tags are essentially state-of-the-art and therefore do not require a detailed description. However, Figure 2 The RFID tag 2 ( Figure 2 , upper part) and a component in the (glass) housing of the RFID tag ( Figure 2 , lower part). Accordingly, a coil 4 is provided, which is wound centrally around a rod-shaped ferrite core 6 and is in contact with an RFID chip 8. The RFID chip 8 is currently placed on the axial ends of the ferrite core 6. The structure consisting of the ferrite core 6, the coil 4 surrounding the ferrite core in sections, and the RFID chip 8 arranged axially at the end is surrounded by a radio-wave-transmissive material (e.g., glass), which forms the housing of the RFID tag 2.

[0076] Figure 3 Now it is used to illustrate the Figure 3 1 shows a first example of a medical device according to the present invention, of a medical device (not shown in further detail), comprising a holder or label carrier 22 designed as a separate component, which is arranged and adapted to be introduced into a (pre-existing) cavity 12 in the medical device. The separate holder / label carrier 22 is configured with a (single) slot-shaped / recess-shaped receiving recess 14 for an RFID tag 2. In this example, the box-shaped separate holder / label carrier 22 comprises a (cylindrical) metal block, into whose outer surface an elongated recess / receiving recess 14 is introduced parallel to the longitudinal axis, into which the RFID tag 2 is inserted / installed axially. The elongated receiving recess / recess 14 is configured and adapted to accommodate the RFID tag 2 and therefore has a shape corresponding to that of the RFID tag 2. The receiving recess 14 is configured such that it penetrates the outer surface of the metal block and thus forms an elongated slot. Here, the slit or groove opening is narrower than the receiving recess 14 itself, so that the RFID tag 2 inserted into the receiving recess 14 cannot fall out or be pressed out of the slit-shaped opening. Therefore, at least one axial end of the elongated receiving recess / groove 14 is open on the end side of the metal block, so that the RFID tag 2 can be pushed axially into the receiving recess / groove 14. As a result, the RFID tag 2 is visible from the outside through the slit / groove opening along the outer surface of the housing side of the metal block.

[0077] Figure 4 is a further illustration for illustrating a second example of a medical instrument or medical device having a separate label carrier 22 which can be introduced into the ( Figure 4 The label carrier 22 is also configured with a groove-shaped receiving recess 14 for the RFID tag 2 according to the aforementioned embodiment. However, unlike the aforementioned embodiment, in this case, the label carrier 22 is composed of a non-metallic or signal-permeable preferably synthetic material block, and the elongated groove-shaped receiving recess 14 is introduced into the synthetic material block parallel to the longitudinal axis of the synthetic material block, and the RFID tag 2 is axially pushed into the receiving recess. Therefore, according to Figure 4 The implementation (structure) is similar to Figure 3 , the difference lies in the material of the tag carrier 22. Since the material of the tag carrier 22 is signal-transmissive, a better reception of the RFID tag 2 is achieved.

[0078] Figure 5 is a further illustration for illustrating a third example of a medical instrument or medical device having a separate label carrier 22 which can be introduced into the ( Figure 5 and Figure 6 In the body (or its cavity 12) not further shown in FIG, the label carrier is configured with a groove-shaped receiving recess 14 for the RFID tag 2 according to the second embodiment described previously. In this case, Figure 4 Compared to the second embodiment just described above, the label carrier 22 consists of a cylindrical, non-metallic, preferably synthetic material block, but has an additional outer shell or cover 16 made of a metallic material. The outer shell 16 has a slit-shaped outer shell opening 18, which extends parallel to or overlaps / covers the receiving recess 14 in the synthetic material block and therefore parallel to the RFID tag 2 arranged in the receiving recess 14. However, in this third example, the length of the outer shell opening 18 is longer than the RFID tag 2, and the width of the outer shell opening 18 corresponds (precisely) to the width of the slit-shaped opening of the receiving recess 14. Therefore, the width of the slit-shaped opening of the receiving recess 14 and therefore the width of the outer shell opening 18 is smaller than the diameter of the RFID tag 2 in order to prevent the RFID tag 2 from falling out of the label carrier (separate holder) 22 or the receiving recess 14 constructed in the label carrier, as has already been described above. However, the increased length of the outer shell opening 18 relative to the receiving recess 14 achieves a reduction in the length of the outer shell opening 18 relative to the receiving recess 14. Figure 3Furthermore, the metal cover 16 serves as a reflector or metal shield for further improving the emission / reception characteristics (directional effect) of the RFID tag 2 in the direction of the reading device (in the Figure 5 and Figure 6 not shown).

[0079] Figure 6 is a further illustration for illustrating a fourth example of a medical instrument or medical device according to the invention, which has a separate label carrier 22 which can be introduced into the body or cavity 12 of the medical instrument and which is configured with a groove-like receiving recess 14 for the RFID tag 2 according to the third exemplary embodiment just described above and which is then provided with a metallic outer cover or outer housing 16. Thus, in addition to the Figure 6 The width of the slit-shaped outer shell opening 18 is greater than the opening width of the receiving recess 14 in the synthetic material block and / or even the opening width of the RFID tag 2 itself, the structure is similar to that according to Figure 5 Since the material of the tag carrier 22 is signal-transmissive (e.g., synthetic material) and the housing opening 18 is wider than the slot width in the tag carrier 22, better reception of the RFID tag 2 is achieved while still achieving a directional effect due to the metal cover 16 acting as a reflector.

[0080] Figure 7 1 is a diagram illustrating a fifth example of a medical device having an instrument cavity 12 (in this case a handpiece (which can be equipped with a motor / equipped with a motor)), an RFID tag (not shown) integrated into the body 10 of the medical device / handpiece, and an (optional) cover 20 above the RFID tag. The cover 20 is preferably inserted flush with the outer surface of the body 10 into an opening 14' formed on the outer surface of the medical device / handpiece or its body 10.

[0081] Such handpieces are sufficiently known from the prior art and therefore do not require a detailed description. Figure 7The handpiece essentially has a preferably cylindrical / sleeve-shaped gripping section, with the tool coupling being arranged at the distal end of the gripping section and the motor coupling being arranged at the proximal end of the gripping section. The RFID tag can be integrated or used in these always identically designed connection areas / coupling areas of the handpiece and in particular in the proximal coupling area of ​​the motor. Preferably, a separate RFID tag carrier 22 according to one of the first to fourth embodiments is used for this purpose, but the RFID tag carrier is further preferably a synthetic material core with a surrounding metal shield according to the above description. As described above, a groove-shaped receiving recess 14 is worked into the synthetic material core, into which the RFID tag is inserted, and the receiving recess has a slit-shaped opening.

[0082] The handpiece is also formed with a longitudinal slot 14' in its proximal coupling section, which connects the instrument cavity 12 formed by the proximal coupling section to the surrounding environment and overlaps with the slot-shaped opening in the RFID tag carrier already inserted into the cavity 12 (see Figures 3 to 6 ) and thus expose the RFID tag to the outside. The longitudinal slot 14' formed in the handpiece or its proximal coupling section and optionally the receiving recess 14 located therebelow in the inserted tag carrier 10 are preferably closed by a plastic part / cover 20 in such a way that a substantially smooth / flat surface is formed on the outside of the handpiece in the region of the longitudinal slot 14'.

[0083] Figure 8 is another diagram for generally illustrating a fifth example of a medical device, specifically according to Figure 7 Has Figure 8 A handpiece to which a motor not shown in the drawing can be coupled, wherein Figure 8 The placement of the RFID tag on / in the handpiece can be better seen in FIG. The RFID tag is thus arranged in the handpiece or its cavity 12 such that it is located proximal to the grip section of the handpiece, in particular in the axial section of the handpiece or body 10 that is coupled to the motor housing, as will be described in greater detail below.

[0084] Figure 9 The sixth example of a medical device with a label carrier / holder 22 integrated into the body 10 of the medical device is illustrated. The label carrier 22 is a separate and independent component that is inserted / inserted into the preferably slit-shaped opening 14' of the body 10 in the manner of an adapter. In other words, according to Figure 9 The medical device corresponds to Figure 8A medical device, wherein in this case, a receiving recess in the form of the aforementioned label carrier / holder 22 is incorporated into the body of the medical device or inserted into a slot in the body itself, and wherein the inserted separate receiving recess is open on the outer surface of the device. The slot / opening 14' of the device itself or of the body itself is not individually adapted to the label to be placed in the slot / opening (is too large). Therefore, an additional label carrier 22 is inserted into the slot / opening 14' as a receiving recess, wherein the label carrier 22 forms a substantially adapted receptacle for the label.

[0085] The holder / label carrier 22 is thus designed and adapted to accommodate an RFID tag (not shown) in the manner of an adapter or intermediate piece between the (generally sized) slot 14' in the device body and the (individually configured) receptacle in the holder / label carrier 22. The holder / label carrier 22 is currently positioned below the outer surface of the body 10, i.e., recessed relative to the outer surface. The shape of the insert / opening formed by the receptacle in the holder 22 corresponds to the shape of the RFID tag, which can be easily inserted into the insert / opening of the holder / label carrier 22 and retained therein, if necessary independently of the shape of the slot 14' formed in the device body.

[0086] Figure 10 is a device having an RFID tag 2 integrated / inserted into a holder 22 Figure 9 FIG. 2 is a diagram of a holder 22 in the body 10 of a medical device 12. Figure 10 As can be seen in the figure, the receptacle in the holder / label carrier 22, which is designed as a separate component and is inserted into the slot 14' in the device body 10, is dimensioned so that the RFID tag is recessed behind the outer surface of the device body 10. This is necessary in this embodiment because it leaves a receptacle area that can be filled with covering material, which, on the one hand, ensures a flat device surface and, on the other hand, holds the RFID tag 2 in the receptacle.

[0087] Figure 11 is a device having an RFID tag integrated / inserted into the holder 22 Figure 10 The retainer 22 ( Figure 11 10). Here, the cover 22 is flush with the outer surface of the body 10.

[0088] Figure 12 is another illustration for explaining an example of a medical instrument having an RFID tag 2 integrated / inserted into the body 10 of the medical instrument. In this example, the holder 22 is arranged in accordance with Figures 3 to 6The label carrier of one example is constructed in the form of an example and is inserted especially according to Figure 8 The handpiece of the apparatus cavity 12 in the coupling section of the proximal end. Therefore, a gap 14' is machined in the apparatus body 10 to connect the cavity 12 with the surrounding environment. In addition, Figure 12 1 shows the housing or coupling section 10 ′ of the motor mounted to the coupling section of the handpiece.

[0089] The cover 20 is mounted on the retainer 22 or inserted into the gap 14'. The surface of the cover 20 is flush with the outer surface of the body 10, so that the cover 20 and the outer surface of the body 10 together form a flat or gap-free / shoulder-free surface. Figure 12 The retainer 22 or label carrier has elastic properties, which causes an elastic force to be applied to the RFID tag when the retainer 22 is installed in the cavity 12 of the device, which presses the RFID tag radially outward against the cover 20 and tensions the RFID tag between itself and the cover 20.

[0090] Figure 13 The invention is used to explain the invention having an RFID tag 2 inserted into the body 10 of a medical device through a (box-shaped) holder 22. Figure 12 The RFID tag is applied with the elastic force. Figure 12 , however, the holder 22 is deformed by applying or pressing the cover 20 into the gap 14', so that the spring force F presses the RFID tag 2 against the cover 20, thereby blocking the freedom of movement and thus preventing mechanical damage. It should be explicitly pointed out here that the spring force does not necessarily have to be generated by the elastic properties of the tag carrier 22, but a separate spring (such as an air cushion or the like) can also be arranged in the gap-shaped receiving recess 14 in the tag carrier 22. It is also possible for the tag housing to be made of an elastic material.

[0091] Figure 14 is another partially cutaway perspective view for illustrating an example of a medical instrument having a Figures 3 to 6In one of the examples in the example, a (box-shaped) tag carrier (holder) 22 is inserted into the body 10 of the medical instrument or its cavity 12, and the RFID tag 2 is already introduced into the receiving recess 14 of the tag carrier. In the outer surface of the body 10, there is a slit-shaped opening 14', which is above the RFID tag 2 in the holder / tag carrier 22 and is larger in width and length than the receiving recess 14. In this embodiment, only the opening 14' in the instrument body 10 is provided and adapted to accommodate a cover (not shown). This means that the opening 14' forms a lowered / stepped recess together with the holder / tag carrier 22 inserted into the cavity 12 of the instrument, so that the RFID tag 2 can be introduced into the receiving recess 14 in the inserted holder 22 through the opening 14', or the cover can be subsequently inserted into the opening 14' in the instrument body 10. In other words, the RFID tag 2 can also be placed into the opening / receiving recess 14 in the holder / tag carrier 22 after it has been inserted into the instrument cavity 12, wherein the holder 22 for the RFID tag 2 or the receiving recess 14 formed therein ensures that the RFID tag 2 is securely held without the need for additional clamping devices. In this case, the base material of the holder 22 or the tag carrier 22 is ideally made of a signal-transmissive material, such as Figure 4 In this embodiment, the RFID tag 2 is positioned downward relative to the inner diameter of the body 10 forming the cavity 12 .

[0092] Figure 15 yes Figure 14 A cross-sectional view of a medical device and is used to further illustrate the Figure 14 An example of a medical device with an RFID tag 2 integrated into the body 10 of the medical device or inserted into the cavity 12 of the device is shown. As can be seen, the receiving recess 14 formed in the tag carrier (holder) 22 forms a longitudinal groove with an open gap that is slightly narrower than the inserted RFID tag 2. In contrast, the gap 14' in the device body 10 is significantly wider than the receiving recess 14 and the RFID tag 2 located therein. This design makes it possible to press the RFID tag 2 through the device gap 14' into the receiving recess 14 (with a slight widening of the recess opening 14), whereby the RFID tag is then retained in the receiving recess 14 via the open cross section.

[0093] Figure 16 and Figure 17 is used to describe the medical device (such as Figure 8 shown in) and separated from each other (according to Figure 16 ) and coupled to each other (according to Figure 17) is an example of a system 24 consisting of a motor 26 that can be coupled to a medical instrument. Alternatively, instead of the couplable motor 26, a coupling plug or a coupling connection element can also be provided, via which the driving force can be operatively coupled and accordingly introduced into the medical instrument. The motor 26 or its coupling section is configured and adapted to accommodate a part of the medical instrument, i.e. according to Figures 7 to 11 Here, the motor 26 has a reading device (not shown) in the region of its coupling section, preferably on its inner side, which is positioned so that in accordance with Figure 17 In the coupled state, the reader device and the RFID tag (not shown) are in close proximity / diametrically opposite / parallel to one another. Alternatively, the reader device may not be integrated into the motor 26, in which case the RFID tag can only be read prior to the insertion process. During operation, the (motor) coupling 26 is pushed onto a portion of the motor connection / body / medical instrument, thereby simultaneously mechanically protecting the RFID tag 2 and shielding it from being read.

[0094] Figure 18 and Figure 19 The diagrams each show an exemplary instrument system consisting of a medical instrument having an instrument body 10 designed as a (motorized) handpiece and a reader 28 designed as an instrument holder. The location on the medical instrument where the RFID tag is located is brought into the closest possible proximity to the reader 28 so that the RFID tag can be read.

[0095] Figure 19 It is composed of medical instruments and reading device 28 Figure 18 Thus, according to this preferred example, the reading device 28 has a support or frame 28a, to which at least one instrument receptacle is preferably fixed in the form of a clamp or collar 28b, in which the medical instrument or its instrument body 10 can be clamped (in Figure 19 The clamping state is shown in an enlarged manner in FIG. ). In addition, Figure 19 Reading device 28 can be seen in the figure, which is located below the medical instrument when it is inserted into instrument receptacle 28b. The key point here is that, due to its arrangement according to the invention, the RFID tag can be placed (arbitrarily) on the medical instrument, i.e., below the base surface, so that when the instrument is inserted into instrument receptacle 28b, it is directly above reading device 28, thus minimizing the transmission distance between the RFID tag and reading device 28.

[0096] Figure 20The figure illustrates an example of a medical instrument having an RFID tag holder 22, wherein the medical instrument is a cordless drill. In this preferred example, the holder 22 is provided by a receiving adapter that fits into a slot in the instrument. The RFID tag is inserted into the receiving adapter and covered with a filler material. The position of the RFID tag is not arbitrary but is selected to enable the data to be read as simply and accurately as possible using a reader.

[0097] In this example, it is provided that the cordless drill is provided with a removable battery / battery that can be inserted into a receiving channel formed in the handle of the cordless drill. This allows the reader device or at least one antenna of the reader device to be arranged at the distal end / end section of the battery in such a way that, when the battery is fully inserted into the receiving channel, the reader device / antenna is in the vicinity of the RFID tag, thus allowing interference-free transmission of data.

[0098] Figure 21 The figure is used to illustrate an example of a medical instrument in the form of scissors, the two handle branches of which are suitable as the instrument body 10 for accommodating an RFID tag below a base surface. In this preferred example, the holder 22 is designed in the form of a receiving recess in one of the two handle branches, in particular in the branch area between the scissor hinge and the finger eye. Figure 18 Compared to a suitable support system of the holder, a defined position of the scissors (for example half-open) can be predetermined, whereby when the scissors are inserted into the holder, the reader is inevitably arranged below the RFID tag.

[0099] Figure 22 and Figure 23 The figures show another medical instrument in the form of a punch, which comprises a clamp handle and a punching slide, which is longitudinally guided in a slide shaft and is manipulated by means of the clamp handle. In this example, the RFID tag holder 22 is preferably designed in the form of a receiving adapter that is inserted into the instrument slot, wherein the instrument slot is located in the slide shaft. The slide shaft is particularly suitable in that it has a sufficient wall thickness to accommodate the RFID tag "below the base surface" and furthermore does not change its position when the clamp handle is moved. The instrument can thus be inserted into the corresponding Figure 18 The RFID tag is always arranged above the reading device in an instrument holder equipped with a reading device, without having to refer to the current actuation state of the forceps handle.

[0100] Figure 24The figure is a diagram for explaining an example of a medical instrument with an RFID tag holder 22 in the instrument body 10, wherein the medical instrument is an angle pliers. In the angle pliers, the RFID tag is introduced "under the base" into the surface of one of the two pliers branches in the region of the joining section of the pliers and can be read by a suitable reading device, which is connected to the above-described Figure 18 Similar to the instrument holder.

[0101] Figure 25 The figure is used to illustrate an example of a medical instrument with an RFID tag holder 22 in the instrument body 10, wherein the medical instrument is a cutting forceps or grasping forceps. In the cutting forceps or grasping forceps shown, the RFID tag is introduced "under the substrate" into the surface of the forceps branches and in particular in the handle section of the forceps branches and can be read by a suitable reading device. Figure 18 A support system or holding system in the sense of a support system or holding system can also in this case predefine a defined actuation position of the pliers, which allows the RFID tag to be arranged directly above the reading device.

[0102] Figure 26 The figure is a diagram for explaining an example of a medical instrument having an RFID tag holder 22 in the instrument body 10, wherein the medical instrument is a pair of tweezers. In the tweezers, the RFID tag is introduced "under the substrate" into the surface of the tweezers branch, in particular in the branch center section between the tweezers handle at the proximal end and the joint section at the distal end, and can be read by a suitable reading device. Figure 18 Read in the sense of .

[0103] Figures 27 to 31 A medical device according to the invention according to a further preferred embodiment and a method according to the invention for mounting a medical device according to a preferred embodiment are shown in a perspective partial view, wherein Figures 27 to 31 The sequential step-by-step assembly is shown in . In the following, the medical device is first described and then the method for assembly is described.

[0104] Specifically, the medical device comprises an instrument body 10, an RFID tag 2 in the form of a pill-shaped glass tag, a separate metal shield 16 in the form of a clampable or form-fitting metal sleeve, and a signal-permeable cover 20 made of rubber, silicone and / or synthetic material, wherein: Figure 27The exploded view shows the unmounted state, in which the aforementioned components exist separately. The instrument body 10 has a proximal, essentially cylindrical coupling section with a longitudinal axis. A slot-shaped recess or cutout is provided in the radially outer circumferential wall of the coupling section, serving as a receiving recess 14. In this embodiment, the radially outer portion of the coupling section of the instrument body 10 is made of a synthetic material and is therefore signal-permeable. The groove-shaped receiving recess 14 is adapted to (at least partially) receive a pill-shaped RFID tag 2, or the RFID tag 2 can be inserted into the receiving recess 14.

[0105] The metal shield 16 is divided in its axial direction into a proximal shielding section 30 and a distal latching section 31. The sleeve-shaped shielding section 30 has an elongated, axially extending, signal-permeable shielding opening 18 in the form of an elongated hole. Due to its metallic material, it is used for signal shielding with a defined signal-permeable shielding opening 18, thereby increasing the possible distance from a read and / or write device (not shown) and improving the data transmission quality. In contrast, the latching section 31 serves to secure the metal shield 16 to the instrument body 10 in the axial direction and, on the other hand, to fix the relative positioning in the circumferential direction.

[0106] In particular, the shielding section 30 is designed in a sleeve-like / sleeve-like manner with a closed outer cover, in which only defined openings or recesses are introduced at various locations. These openings or recesses are primarily the shielding opening 18 and a cutout 33 extending axially from the proximal end in the distal direction. The cutout 33 (which is rotated 90° about the longitudinal axis relative to the shielding opening 18) can be used, for example, to determine relative positioning in the circumferential direction, if, for example, a coupling section complementary to the coupling section is introduced into the cutout 33 with a defined radially inwardly extending projection in order to geometrically predetermine the relative rotational position of the handpiece relative to the mating piece.

[0107] The locking section 31 directly connected to the shielding section 30 at the distal end has four partially circular locking arms 32 extending in the axial direction, which are particularly evenly distributed when viewed in the circumferential direction. Each locking arm 32 has a radially outwardly protruding locking lug on its distal end for form-locking locking by means of an undercut. In the extension of the shielding opening 18, a longitudinal recess 34 is provided between two such locking arms 32, so that when the RFID tag 2 is inserted, the metal shield 16 can only be pushed onto the instrument body 10 in this position fixed in the circumferential direction. Therefore, the metal shield 16 is adapted to be pushed and fixed only at a predetermined rotational position. As Figure 31As shown, the RFID tag 2 and the shielding opening 18 are parallel to each other and extend radially. This ensures that the shielding opening 18 is positioned symmetrically and centrally relative to the RFID tag 2, wherein the shielding opening 18 forms the opening 14' toward the device's surroundings. Due to its geometric design, the latching arms 32 have a certain inherent elasticity in the radial direction, allowing them to temporarily deflect against their inherent stresses. It is also possible that only the shielding section 30 is made of metal, while the latching section 31 comprises another material, such as a synthetic material.

[0108] The rubber cover 20 has a radial step around its circumference, or two plate-like, overlapping rectangles with radially decreasing dimensions and rounded corners. The radially outer rectangle of the cover has dimensions identical to those of the shield opening 18, thereby closing the shield opening 18 with a precise fit. The larger, radially inner rectangle rests against the inner wall of the shielding section 30. This design allows the cover 20 to be inserted into the shield opening 18 within the metal shield 16 and, with only the RFID tag 2 as a mating element, to be fixed in position and securely held in the shield opening 18 in the installed state. The metal shield 16 has a rounded edge 34 at its proximal end to facilitate insertion into the mating part of the handpiece.

[0109] The method for installation according to the present invention will be described below. Figure 27 In FIG, a first step of positioning the RFID tag 2, the medical device, the metal shield 16 and the signal-permeable cover 20 relative to one another is shown. The metal shield is arranged coaxially with the longitudinal axis of the device body. Figure 28 , the step of inserting the RFID tag 2 into the underlying tag holder 22 of the medical instrument in the radial direction is shown, where it is pressed into the underlying tag holder 22 in the radial direction. Of course, the step of inserting the RFID tag 2 can also be performed first and the step of positioning can be performed thereafter. Because the metal shield 16 is already in the correct rotational position relative to the instrument body 10, the step of rotating the metal shield 16 around the axial axis / longitudinal axis of the medical instrument or the instrument body 10 can be omitted until the signal-permeable shielding opening 18 and the RFID tag 2 are in the same position in the circumferential direction. Figure 29 , the cover 20 is partially inserted into the signal-permeable shield opening 18 by moving the cover 20 in the axial direction into the metal shield 16 to the radial inside of the metal shield and moving the cover 20 in the radial direction outward into the shield opening 16. Here, the cover 20 is not completely inserted into the shield opening 18. In addition, Figure 29The metal shield 16 is shown partially pushed in the axial direction onto the handpiece or medical instrument with the inserted RFID tag 2. Finally, Figure 30 The finishing step of inserting the cover 20 into the shielding opening 18 is shown, the shielding opening being closed flush.

[0110] Figure 31 The mounted state is shown, with the final step of sliding the metal shield 16 onto the instrument body 1, so that the shield opening 18 and the RFID tag 2 are arranged parallel to each other and in radial extension, and the RFID tag 2 is thus fixed in position in the medical instrument in a manner that prevents loss. The step of securing the metal shield 16 relative to the instrument body 10 is performed by latching the latching lugs 32.

[0111] Finally, it should be pointed out that the terms "holder" and "label carrier" are synonymous and represent the same component. Furthermore, the medical device shown by way of example is not closed, but any other device and, if necessary, even orthoses or implants (e.g. pacemakers, artificial joints, etc.) can also be equipped with an RFID label placed "below the base surface". In general, the present invention relates to a medical device having an instrument body 10, which is provided with an RFID label 2. According to the invention, a label holder 22 below the base surface is arranged or constructed in the instrument body 10, which is provided and constructed to accommodate the RFID label 2 in a fixed position, so that the RFID label 2 is exposed to the instrument surroundings through an opening 14' constructed in the surface of the instrument body, but is set back relative to this instrument body surface in the direction of the interior of the instrument body, in order preferably to avoid (the RFID label 2) protruding beyond the surface of the instrument body.

Claims

1. A medical device having a device body (10), wherein the device body is provided with an RFID tag (2), characterized in that A lower tag holder (22) is arranged and constructed to accommodate the RFID tag (2) in a fixed position so that the RFID tag (2) is exposed to the instrument surroundings through an opening (14') constructed in the surface of the instrument body, but is retracted with respect to the instrument body surface in the direction toward the interior of the instrument body to avoid protruding beyond the instrument body surface, wherein the lower tag holder (22) with the RFID tag (2) is at least partially surrounded by a separate metal shield (16) with a signal-permeable shielding opening (18), wherein the shielding opening (18) forms an opening (14') toward the instrument surroundings, and wherein the opening (14') is not closed by an RF shielding cover when the medical instrument is in a fully assembled state.

2. The medical device according to claim 1, wherein The device body (10) encloses or has a cavity (12) which is accessible to the device surroundings via the opening (14'), and the underlying label holder (22) is inserted into the cavity (12) in the form of a label carrier.

3. The medical device according to claim 2, wherein The label carrier has a receiving recess (14) for the RFID tag (2), which is molded on the outer side of the label carrier and is open to the outer side of the label carrier, wherein the receiving recess (14) is positioned on the label carrier so that when the label carrier is inserted into the cavity (12), the opening of the receiving recess overlaps with the opening (14') in the device body (10).

4. The medical device according to claim 3, wherein The opening (14') in the instrument body (10) is larger than the opening of the accommodating recess (14), wherein the opening of the accommodating recess (14) is smaller than the RFID tag (2) inserted into the accommodating recess (14).

5. The medical device according to claim 4, wherein: The opening (14') formed in the device body (10) on the outside of the medical device has a width that corresponds to the product of the coil diameter of the RFID tag (2) and an ideality factor, wherein the ideality factor is in the range of 1.3 to 2.

2.

6. The medical device according to any one of the preceding claims 4 or 5, characterized in that The opening (14') formed in the device body (10) on the outside of the medical device has a length of -30% to +50% of the total length of the ferrite core (6) of the RFID tag (2) or the entire RFID tag (2).

7. The medical device according to claim 1, wherein The device body (10) is configured with a receiving recess (14) open toward the outside of the device body for directly or indirectly receiving the RFID tag (2) in a fixed position.

8. The medical device according to claim 7, characterized in that A receiving adapter is provided, which is inserted into the receiving recess (14) of the device body (10) and forms the underlying tag holder (22) for inserting the RFID tag (2) in the underlying tag holder.

9. The medical device according to claim 3, characterized in that A cover made of a signal-permeable material or a filling material (20) forming the cover is inserted or filled into the receiving recess (14) so ​​that the cover (20) covers the inserted RFID tag (2) outwardly and realizes a flush transition to the surface of the device body surrounding the opening (14') in the device body (10).

10. The medical device according to claim 1, wherein The lower label holder (22) is made of metal or a signal-transmissive material.

11. The medical device according to claim 1, wherein The metal shield (16) is designed as a sleeve or bushing having a circumferential outer surface, in which the shielding opening (18) is formed.

12. The medical device according to claim 1, wherein The metal shield is constructed in the form of an elongated washer or in the form of an annular metal sheet.

13. The medical device according to claim 1, wherein The shielding opening (18) is configured in an elongated or slot-shaped manner and has a shielding opening longitudinal axis, wherein the longitudinal axis of the RFID tag (2) is parallel to the shielding opening longitudinal axis and is arranged at a distance therefrom.

14. A medical processing system comprising a medical instrument according to any one of the preceding claims 1 to 13 and a reading and / or writing device (28) that can be coupled to the RFID tag (2) of the medical instrument in terms of signal technology, the reading and / or writing device having an instrument holder or being constructed as an instrument holder, the instrument holder being configured and adapted to hold or temporarily fix the medical instrument in a predetermined position and / or orientation relative to the reading and / or writing device (28), in which position and / or orientation a signal transmission between the RFID tag (2) and the reading and / or writing device (28) can be achieved, wherein The distance between the RFID tag (2) and the reading and / or writing device (26) is minimal.

15. A method for installing a medical device according to any one of claims 1 to 13, the method being used to install an RFID tag and a metal shield in the medical device, the method comprising the steps of: - positioning the RFID tag (2), the medical device and the metal shield (16) relative to each other; - placing the RFID tag (2) into the underlying tag holder (22) of the medical instrument; - rotating the metal shield (16) around the axial axis of the medical instrument until the signal-permeable shield opening (18) and the RFID tag (2) are in the same position in the circumferential direction; - pushing the metal shield (16) onto the medical instrument in the axial direction so that the shield opening (18) and the RFID tag (2) are arranged in radial extension of each other as viewed in the direction of the longitudinal axis, and thereby the RFID tag (2) is fixed in position in the medical instrument in a manner that prevents loss; - Fixing the metal shield (16).

16. The method for installation according to claim 15, characterized in that The method further comprises the steps of: - positioning a signal-permeable cover (20) relative to the metal shield (18); - The cover (20) is partially placed into the signal-permeable shielding opening (18) by moving the cover (20) in the axial direction toward the metal shield (16) to the radial inside of the metal shield and moving the cover (20) in the radial direction outward into the shielding opening (16), so that the cover (20) is inserted into the shielding opening (18) and, after the step of pushing the metal shield (16), the cover (20) is fixed in position in the medical instrument in a manner that prevents loss.

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