Instrument strainer basket for medical, in particular surgical instruments and / or implants for use in the supply of sterile items

Abstract

The invention relates to an instrument strainer basket (2) for medical instruments and / or implants for use in the supply of sterile items in the medical field, comprising: a strainer basket support structure (4) having a plurality of strainer basket openings (6); an upper face (8) facing the instruments; an underside (10) of the strainer basket support structure (4) facing away from the instruments; and foot parts (12) protruding downwards from the underside (10) of the strainer basket support structure (4) for mounting the instrument strainer basket on a surface. The foot parts (12) can be detachably fastened to the strainer basket support structure (4) from the underside (10) of the strainer basket support structure (4) at different selectable points on the underside (10), by the relevant foot parts (12) each comprising a base part (16), which can be clipped into the strainer basket support structure from the underside of the strainer basket support structure (4) and is held there in the clipped-in state, and each comprising a support part (18), which is held on the base part (16) and is made of an elastomer material, and the support part (18) has at least one lateral groove (20) into which a lateral limb (22, 24) of the base part (16) form-fittingly engages so as to engage therebehind, such that the support part (18) is captively held on the base part (16) when used as intended.

Description

[0001] Title: Instrument tray for medical, particularly surgical instruments and / or implants for use in sterile supply

[0002] Description

[0003] The invention relates to an instrument tray for medical, in particular surgical instruments and / or implants for use in the supply of sterile goods in the medical field, in particular in the operating room, with a portafilter structure with a plurality of portafilter openings, with an upper side facing the instruments and a lower side of the portafilter structure facing away from the instruments, and with foot parts projecting downwards from the lower side of the portafilter structure for supporting the instrument tray on a surface

[0004] Furthermore, the invention relates to foot parts for such an instrument tray.

[0005] Such instrument trays, which are often designed as instrument tray baskets or tray inserts for sterile goods containers, play an important role in the so-called sterile goods cycle of medical and particularly surgical instruments, as they hold the instruments to be sterilized during sterilization and also afterwards during transport to the sterile goods storage area and from there to the place of use, in particular an operating room. For this purpose, organizational systems for instrument trays of the type mentioned above have already been proposed to keep the instruments in a predetermined position and arrangement on the instrument trays until they are removed by medical personnel immediately before use.

[0006] There are also instrument trays or baskets that have rigid plastic bases permanently mounted to the instrument trays by the manufacturer. Due to the hardness of the plastic, this can lead to scratches and abrasion on the surface and noise during transport in containers, both of which are considered disadvantageous.

[0007] The object of the present invention is to provide a versatile instrument tray with foot parts in which the problems described above do not arise or at least only to a much lesser extent.

[0008] This object is achieved according to the invention in an instrument tray of the type mentioned at the outset in that the foot parts can be detachably fastened to the portafilter structure from the underside of the portafilter structure at various selectable points on the underside, in that the respective foot parts each comprise a base part, in particular made of a metallic material, which can be clipped into the portafilter structure from the underside of the portafilter structure, preferably by means of spring tongues, and is held there in the clipped-in state, and in that the support part has at least one lateral groove, in which a side leg of the base part engages in a form-fitting manner, so that the support part is held captive on the base part during normal use.

[0009] The foot part is typically designed in such a way that the support part is preferably first attached to the base part and then the foot part consisting of the base part and support part is clipped into the portafilter structure from below and thereby fixed.

[0010] The fact that the base part engages with a side limb in the lateral groove of the support part, and engages in a form-fitting manner behind it, not only is a captive coupling of the support part and base part achieved, but forces that occur during operation can also be absorbed without the elastomer support part becoming detached from the base part. Such forces are sometimes considerable, since filled instrument trays can be very heavy, so that when the instrument tray is placed on a surface or lifted from a surface, forces that act in the plane of the tray and are sometimes concentrated in the area of ​​the feet can occur. These forces can be transmitted and absorbed by the side limb of the base part engaging in the lateral groove of the support part.Because the instrument tray rests on a support made of elastomeric and thus sufficiently elastic material, noise during transport is reduced and is no longer perceived as disturbing. Placing the instrument tray on a surface or any other support also feels pleasant to the touch.

[0011] It has proven advantageous if the base part, which can be clipped onto the portafilter structure from below, has a base leg facing the underside of the portafilter structure and, laterally adjoining this, two opposite side legs, and if, starting from the base leg or starting from the side legs of the base part, at least two spring tongues are formed, preferably at least two spring tongues on one or both sides, which extend in the direction of the portafilter structure and are resiliently deflectable so that they can be clipped into the portafilter structure and locked there. The two side legs of the base part serve to couple to the support part made of elastomer material, and the spring tongues serve to anchor the base part and thus the foot part to the portafilter structure.It also proves to be advantageous if the base part with the support part held thereon can be positioned with its base leg on the underside of the portafilter structure in such a way that a first spring tongue engages behind a portafilter opening, and that then merely by exerting a pressure force on the base part in the direction of the underside of the portafilter structure a second, in particular opposite spring tongue is deflected and in the process automatically penetrates into a further portafilter opening and locks there with an edge area delimiting the portafilter opening, so that the base part can be fastened to the portafilter structure without tools and captively for the intended use.

[0012] To form the foot part from the base part and the support part, it is advantageous if the support part can be pushed onto the base part in the direction of the longitudinal extension of the lateral groove.

[0013] In a further development of this idea, it proves to be advantageous if the lateral groove extends to at least one end face of the support part and opens out there, so that the support part can be pushed onto the base part from its end face in the direction of the longitudinal extent of the lateral groove.

[0014] According to an alternative embodiment, the support part can be attached to the base part orthogonally to the direction of the longitudinal extension of the lateral groove. This results in an elastic deformation of the support part and / or an elastic expansion of the lateral leg of the base part until the lateral leg engages positively in the lateral groove of the base part.

[0015] It may also prove advantageous if the lateral groove of the support part has at least one parallel offset and preferably two parallel offsets along its longitudinal extent, which form or form a longitudinal stop for the side leg of the base part engaging in the groove. In this case, it may also prove advantageous if the parallel offset of the lateral groove is designed to be so slight and / or the support part is designed to be torsionally elastic such that the support part can be pushed onto the base part with the side leg of the base part engaging in the lateral groove and overcoming the parallel offset in the direction of the longitudinal extent of the groove.

[0016] The following dimensions of the groove have proven to be advantageous: a groove width of 0.6 to 3 mm, in particular up to 2 mm, in particular up to 1.5 mm, in particular up to 1.2 mm; a groove depth of 1.0 - 3.0 mm, in particular up to 2.5 mm, in particular up to 2 mm; an amount of parallel offset of 1.0 - 3 mm.

[0017] According to a further embodiment, it is proposed that the lateral groove of the support part does not open out at the end in the direction of its longitudinal extent, but rather a length of the groove essentially corresponds to the extension of the base part in this direction, and that the support part overlaps the base part at the end and is thus held positively and captively on the base part in the direction of the longitudinal extent of the groove. This ensures that the support part made of elastomeric material can overlap the base part, preferably on both sides, with a significant portion of its extension, so that large horizontal forces can be transmitted between the support part and the base part and thus the portafilter structure.

[0018] According to a particularly advantageous embodiment, the support part has a shallow recess on its side facing the underside of the instrument tray, in which recess a base leg of the base part is received, wherein a depth of the recess is at least slightly greater than a wall thickness of the base leg of the base part. This makes it possible for the base leg to be completely received within this recess in the depth direction, so that the support part, with its elastomer material, lies directly against the underside of the instrument tray, while direct contact between the base leg of the base part and the instrument tray, which could lead to noise, is avoided.The elastomer material of the support part then acts as a damping element between the base part and the instrument tray, and due to its shape-retaining elastic property, it also exerts a force between the base part and the instrument tray during assembly, which ensures a play-free arrangement of the foot part on the instrument tray.

[0019] In a further development of this idea, it is advantageous if the flat recess is arranged in projection orthogonal to the portafilter structure along the extension of the groove between two parallel offsets of the groove. It is also advantageous if the size of the parallel offset of the groove essentially corresponds to the depth of the recess, so that no excessive torsional forces occur within the base part in the unloaded state.

[0020] With regard to economical manufacture and stability of the device, it is advantageous if the base part is a bent sheet metal part and the spring tongues are notched out of the bent sheet metal part. In this case, the base part including its spring tongues can be formed from a metallic flat material section by punching and bending processes. A bending fold between the base leg and the two laterally adjacent side legs gives the base part high torsional stability, even with small wall thicknesses of the base part of in particular 0.2 to 1.0 mm, in particular 0.25 to 0.8 mm and in particular 0.3 to 0.5 mm. Furthermore, a further fold can be provided at the upper free end of the side legs, preferably inwards, which further increases the torsional rigidity and also makes it easier to insert or engage in the groove of the support part.At the upper free end of the side legs, edge sections with different degrees of bevelling can also be formed, which can then be supported against opposing groove flanks (e.g. as shown in Figure 2).

[0021] Furthermore, it proves advantageous if the spring tongues are notched from the side leg and the base leg. In this case, the spring tongue can be designed to be sufficiently long so that it can engage with a sieve opening of the instrument tray without the need for additional holding projections and rear grip elements to be separately provided or attached to the free end of the spring tongue.

[0022] To ensure a reliable attachment of the device or its base part to the instrument tray, it is advantageous for a free end, preferably of each of the spring tongues, to be designed or formed to form a rear-engaging region or a rear-engaging bead. Thus, each spring tongue can reach a positively engaging position with an edge region of the portafilter structure that defines the respective tray opening and can remain reliably in this position under the action of a resilient force of the spring tongue.

[0023] It also proves to be advantageous if a free end of preferably each of the spring tongues is angled by more than 90°, preferably by at least 100°, preferably by at least 110° to the longitudinal extent of the spring tongue and thus forms a securely holding rear grip with an edge region delimiting a sieve opening.

[0024] In order to make the attachment of the base part to the portafilter structure simple and reliable and comfortable for the operator, it is advantageous if a free end, preferably of each of the spring tongues, forms a beveled starting point of the respective spring tongue, which, when the base part is pressed towards the top of the portafilter structure, runs against an edge area defining a portafilter opening and is deflected in the process to engage in a rear-engagement position with the edge area. The instrument tray can, in principle, have any desired design of the portafilter surface structure as long as the

[0025] Sieve openings are arranged periodically so that the arrangement and design, in particular the spacing of the retaining tongues from one another, can be designed to correspond to the spacing of the sieve openings from one another. With regard to the production of a sieve surface structure which is largely open for sterilization purposes, it proves to be advantageous if the instrument sieve has a sieve support structure with in particular rectangular and preferably square sieve openings which are delimited by webs which are narrower than the side length of the rectangular shape or than a largest dimension of the sieve openings. In particular, a web width of the webs is at most 30%, in particular at most 20% of a largest dimension of the sieve openings, whether they are rectangular or not.

[0026] It can also prove advantageous if the instrument tray is rectangular in shape when viewed from above, with a corresponding longitudinal and transverse direction, and if the webs defining the tray openings run at an incline of 45° to the longitudinal or transverse direction. In this case, the tray openings can also extend at an incline of 45° to the longitudinal or transverse direction of the instrument tray. If, on the other hand, the base parts are then aligned in the longitudinal or transverse direction, the resilient force of the spring tongues leads to a kind of self-centering of the respective spring tongue in a corner region of a respective tray opening. It can also prove advantageous if the instrument tray comprises a 3-dimensionally structured, in particular corrugated, tray support structure.In such a case, the base part can be arranged and fastened in the area of ​​high points or mountains of the portafilter structure, whereby it does not have to lie ideally on top of these high points or mountains of the portafilter structure, but it is conceivable that the portafilter structure engages with its high points or mountains in recesses of the base leg of the base part.

[0027] In further development of this idea, it proves to be advantageous if recesses are formed in the base part, into which the portafilter structure can engage with elevations, so that in this way a further stabilization of the position of the base part on the portafilter structure can be achieved.

[0028] In a preferred embodiment, the instrument tray, including its portafilter structure, can be formed from a flat metallic material, in particular from a metal sheet, and manufactured in particular by cutting, punching, and bending processes, in particular using laser cutting technology. In this way, the material thickness of the portafilter structure can be kept constant across its entire extension, in particular across the entire base area of ​​a portafilter basket. In principle, however, braided portafilter structures are also conceivable and sometimes advantageous.

[0029] With regard to the above-mentioned self-centering of the spring tongues in corner areas of the sieve openings, it proves to be advantageous if a distance between two adjacent spring tongues of a side leg of the base part corresponds to a distance between two intersection points of the webs delimiting the sieve openings or is twice or an integer multiple thereof, so that the spring tongues can be positioned automatically in the respective corner areas of the sieve openings.

[0030] The invention also relates to a base part for an instrument tray having the features of claim 21. Furthermore, protection is claimed for such base parts according to the invention which have further features of claims 2 to 20 individually or in combination.

[0031] Further features, details and advantages of the invention emerge from the appended patent claims and the drawings and subsequent description of preferred embodiments of the invention.

[0032] The drawing shows:

[0033] Figure 1 shows an instrument tray according to the invention with a base part according to the invention;

[0034] Figures 2 ae show various representations of a base part of the foot part according to Figure 1;

[0035] Figures 2 fh illustrate the detachable attachment of the base part to the instrument tray;

[0036] Figures 3 a-f show a support part of the foot part according to Figure 1; Figures 4 ad illustrate the arrangement of the support part on the base part;

[0037] Figures 5 a- f show a further embodiment of the support part; and

[0038] Figures 6 ac illustrate the arrangement of the support part according to Figure 5 on the base part.

[0039] The figures show an exemplary embodiment of an instrument tray 2 according to the invention for medical, in particular surgical, instruments, for use in the supply of sterile goods in the medical field. The instrument tray 2 comprises a portafilter structure 4 with a plurality of portafilter openings 6. The portafilter structure 4 comprises an upper side 8 facing the instruments (not shown) mounted thereon and not visible in the illustration in Figure 1, and an underside 10 facing away from the instruments. As shown in Figure 1, a base part 12 according to the invention, which will be described in more detail below, can be detachably fastened to the portafilter structure 4 from the underside 10 at basically any selectable location. Furthermore, any desired number of such base parts 12 can be fastened to the underside 10 of the portafilter structure 4.

[0040] Each foot part 12 comprises a base part 16 which can be clipped into the portafilter structure 4, preferably by means of spring tongues and is shown in detail in Figures 2 ah, and a support part 18 made of an elastomeric material which is detachably held on the base part 16 and is shown in detail in Figures 3 a-f. The support part 18 designed according to the invention has at least one and, in the example shown, two lateral grooves 20, into which a side leg 22, 24 of the base part 16 engages in a manner to be described in more detail, in order to hold the support part 18 captive on the base part 16 during intended use, so that the instrument tray 2 can be placed securely on a surface via the foot parts 12. The joining of the support part 18 to the base part 16 is illustrated in Figures 4 ad .

[0041] In the exemplary case shown here, the portafilter structure 4 is corrugated, i.e. it has a three-dimensional wave structure. The portafilter structure 4 is formed, for example, from two groups, each consisting of a large number of webs 26 running parallel to one another, the webs 26 of one group running at right angles to the webs 26 of the other group, so that they delimit the portafilter openings 6. Starting from an initially flat portafilter structure 4 made up of webs 26, the corrugated structure was then embossed. Despite the three-dimensional structure, the portafilter openings 6 in the exemplary case shown can be described as essentially square, i.e. they have a square shape when projected perpendicularly onto the base area or plane of the portafilter structure 4.

[0042] Figures 2 ah, but also the other figures, show the shape and design of the base part 16. In the case shown here as an example, it was formed from a flat metallic sheet material, which was brought into the shape shown in Figure 2 by cutting, punching or bending processes. The base part 16 comprises a

[0043] Bottom 10 of the portafilter structure 4 attachable

[0044] Base leg 28 and, adjoining it laterally, the two already mentioned and opposite side legs 22, 24. In the example shown, the base leg 28 and the two side legs 22, 24 form approximately a U-shape, which is slightly narrower towards the top. Furthermore, the side legs 22, 24 have, at their upper free end, an inwardly bent edge region 30 or 32, wherein these edge regions 30, 32 are in turn interrupted and bent inward to varying degrees into the U-shape, as shown by way of example in Figures 2 ad.

[0045] It can also be seen that, starting from the side legs 22, 24, two spring tongues 34, 36 are formed on each side. These spring tongues 34, 36 are notched out of the material of the former flat material section by a punch cut and therefore leave a recess 38 in the base leg 28 and in the side legs 22, 24 of the base part 16. They are bent outwards so that, starting from an upper region of the side legs 22, 24, they extend obliquely downwards at an acute angle in the direction of the portafilter structure 4 and can be resiliently deflected relative to the side legs 22, 24.Each spring tongue 34, 36 is bent inwards at its free end and forms a rear-engaging region 40 with which a respective spring tongue 34, 36 can engage in a sieve opening 6 and form a positive holding connection with the edge regions delimiting the sieve opening 6, that is to say with the webs 26 of the portafilter structure 4.

[0046] This is explained with reference to Figures 2 f-h: Figures 2 f-h show the exemplary three-dimensionally corrugated portafilter structure 4 and the base part 16 with its spring tongues 34, 36. It can be seen in Figure 2 f that the base part 16 is slightly inclined relative to a plane of the portafilter structure 4, so that the spring tongues 34 of the side leg 22 shown on the left in Figure 3a engage in two adjacent filter openings 6 in the region of a wave crest of the portafilter structure 4 and hook into the webs 26 with their respective engaging region 40. Starting from this assembly situation, all that is needed now is a compressive force in the direction of an arrow 42 shown in Figure 3b to be exerted on the base part 16 orthe other side leg 24 in the direction of the portafilter structure 4, so that the opposing spring tongues 36 with their engaging end regions 40 run against the webs 26 and are deflected outwards and finally reach the engaging situation shown in Figure 2h, in which the spring tongues 34, 36 spring back inwards after engaging in two filter openings and thereby assume a captive mounting position on the portafilter structure 4. In this mounting position, the base part 16 rests, so to speak, with its base leg 28 in the region of elevations of the portafilter structure 4 and is again arranged parallel to the plane of the portafilter structure 4. However, in the embodiment shown as an example, the base part 16 does not rest right at the top on the high points of the elevations of the portafilter structure 4, but rather quite high up on the webs 26 leading thereto.The high points or peaks of the elevations dip into the recesses 38 in the base leg 28 of the base part 16, which have resulted here by the notching of the spring tongues 34, 36.

[0047] Further details of the training and installation of the

[0048] Base part 16 on the portafilter structure 4 , in particular on the

[0049] The method of removing the webs 26 of a three-dimensionally corrugated portafilter structure 4, as well as the method of removing the base part 16 from the portafilter structure 4 by means of a removal tool, is described in detail in DE 10 2023 103 493 A1, so that reference is made thereto. In particular, the relevant content of DE 10 2023 103 493 A1 is incorporated by reference into the present application.

[0050] Figures 3 a-f show in detail the design of the support part 18 made of a flexibly deformable, yet dimensionally stable elastomeric material. It can be seen from Figures 3 a-f that the support part 18 has continuous lateral grooves 20 on both sides, which open into respective end faces 52 and 54 lying opposite one another in the longitudinal direction. As a result, the support part 18 can be pushed onto the base part 16 in the longitudinal direction 50, as can be seen from Figures 4 ad, or to put it the other way around, the base part 16 can be pushed onto the support part 18 by its edge regions 30, 32 engaging in the grooves 20 on both sides of the support part 18. This results in an elastic twisting of the support part 18.

[0051] According to an embodiment of the invention, which is shown in Figures 3 and 4, the respective lateral groove 20 of the support part 18 has, in the case shown as an example, two parallel offsets 56, 58 along its longitudinal extent 50, which then form, in the final assembly position of the support part 18 on the base part 16, a respective longitudinal stop 60, 62 for the base part 16 or for the edge regions 30, 32 of the side legs 22, 24 of the base part 16 engaging in the groove 20. As can be further seen from Figures 3 and 4, the

[0052] Support part 18 on its underside 10 of the

[0053] Instrument tray 2 facing side a flat recess

[0054] 68, in which the base leg 28 of the base part 16 is received in the assembled situation (cf. Figure 4d). For this purpose, it proves to be advantageous that the flat recess 68 orthogonal to the portafilter structure corresponds at least to the thickness of the base leg 28 of the base part 16, so that the latter is completely received within the recess 68. In this case, the foot part 12 rests against the underside 10 of the portafilter structure 4 by means of the elastomer material of the support part 18, so that no rattling noises occur during operation.

[0055] Figures 5 a-f and 6 ac show a further embodiment of the foot part according to the invention, wherein its support part 18 ' is designed differently. Its two-sided grooves 20 do not open out at the end, but a length of the groove 20 corresponds essentially to the extension of the base part 16 in the longitudinal direction 50. The support part 18 ' is further designed such that it engages over the base part 16 at the end and is thereby held positively and captive on the base part 16 in the longitudinal direction 50 of the groove, as is directly evident from Figure 6c. The stop surfaces 70, 72 facing the base part 16 can be seen from Figure 5a. It can also be seen from Figures 6 a, b that the support part 18 ' can be plugged onto the base part 16 orthogonally to the longitudinal extent and longitudinal direction 50 of the lateral groove 20.Depending on the dimensions of the parts, this results in elastic deformation of the support part 18 ' and / or a resilient widening of the side legs 22 , 24 of the base part 16 , so that in the final assembly position ( Figure 6c ) the edge regions 30 , 32 of the base part engage resiliently in the groove 20 .

[0056] By means of the instrument tray 2 according to the invention and the base part 12 according to the invention, the underside 10 of the instrument tray 2 can be designed with base parts 12 in accordance with individual requirements. The base parts 12 can be fixed and detached again at any point on the underside 10. The design according to the invention ensures that an instrument tray can be set up on a surface without slipping, and the contact of the support part made of elastomer material against the surface enables the instrument tray to be set down and picked up again quietly. Shear forces acting in the plane can also be absorbed without the foot part or the support part becoming detached from the base part.

Claims

Patent claims 1. Instrument tray (2) for medical, in particular surgical instruments and / or implants for use in the supply of sterile goods in the medical field, in particular in the operating room, with a portafilter structure (4) with a plurality of portafilter openings (6), with an upper side (8) facing the instruments and a lower side (10) of the portafilter structure (4) facing away from the instruments, and with foot parts (12) projecting downwards from the lower side (10) of the portafilter structure (4) for supporting the instrument tray on a surface, characterized in that the foot parts (12) can be detachably fastened to the portafilter structure (4) from the lower side (10) of the portafilter structure (4) at various selectable locations on the lower side (10) by the respective foot parts (12) each having a spring tongue (34, 36) projecting from the lower side of the portafilter structure (4) into the portafilter structure,a base part (16) which can be clipped in and is held there in the clipped-in state, in particular made of a metallic material, and a support part (18) made of an elastomeric material which is held on the base part (16), and in that the support part (18) has at least one lateral groove (20) into which a side leg (22, 24) of the base part (16) engages in a form-fitting manner, so that the support part (18) when used as intended, Use is held captive on the base part (16).

2. Instrument sieve according to claim 1, characterized in that the base part (16) has a base leg (28) facing the underside (10) of the portafilter structure (4) and laterally adjoining thereto two opposite side legs (22, 24), that starting from the base leg (28) or starting from the side legs (22, 24) of the base part (16) at least two spring tongues (34, 36), preferably at least two spring tongues (34, 36) on one or both sides, are formed, which extend in the direction of the portafilter structure (4) and are resiliently deflectable so that they can be clipped into the portafilter structure (4) and locked there.

3. Instrument sieve according to claim 2, characterized in that the base part (16) with the support part (18) held thereon can be positioned with its base leg (28) on the underside (10) of the portafilter structure (4) in such a way that a first spring tongue (34, 36) engages behind a portafilter opening (6), and that then only by exerting a pressure force on the base part (16) in the direction of the underside (10) of the portafilter structure (4) a second, in particular opposite spring tongue (34, 36) is deflected and thereby automatically penetrates into a further portafilter opening (6) and there engages with an edge region delimiting the portafilter opening (6), so that the base part (16) can be removed without tools and for the intended use, permanently attached to the Portafilter structure (4) can be attached.

4. Instrument tray according to one or more of the preceding claims, characterized in that the support part (18) can be pushed onto the base part (16) in the direction of the longitudinal extension (50) of the lateral groove (20).

5. Instrument tray according to one or more of the preceding claims, characterized in that the lateral groove (20) extends to at least one end face (52, 54) of the support part (18) and opens out there, so that the support part (18) can be pushed (16) onto the base part in the direction of the longitudinal extent (50) of the lateral groove (20).

6. Instrument tray according to one or more of the preceding claims, characterized in that the support part (18) can be plugged onto the base part (16) orthogonally to the direction of the longitudinal extension (50) of the lateral groove (20).

7. Instrument tray according to one or more of the preceding claims, characterized in that the lateral groove (20) of the support part (18) has at least one parallel offset (56, 58) and preferably two parallel offsets (56, 58) along its longitudinal extent (50), which form or form a longitudinal stop (60, 62) for the side leg (22, 24) of the base part (16) engaging in the groove (20).

8. Instrument tray according to one or more of the preceding claims 1 to 4 or 6 or 7, characterized characterized in that the lateral groove (20) of the support part (18' ) does not open out at the end in the direction of its longitudinal extension (50) but a length of the groove (20) essentially corresponds to the extension of the base part (16) in this direction and in that the support part (18' ) engages over the base part (16) at the end and is thereby held positively and captively on the base part (16) in the direction of the longitudinal extension (50) of the groove (20).

9. Instrument tray according to one or more of the preceding claims, characterized in that the support part (18) has on its side facing the underside (10) of the instrument tray (4) a flat recess (68) in which a base leg (28) of the base part (16), wherein a depth of the recess (68) is in particular greater than a wall thickness of the base leg (28) of the base part (16).

10. Instrument tray according to claim 7 and 9, characterized in that the flat recess (68) is arranged in projection orthogonal to the tray support structure (4) along the extension of the groove (20) between two parallel offsets (56, 58).

11. Instrument tray (2) according to one or more of the preceding claims, characterized in that the base part (16) is a bent sheet metal part and that the spring tongues (34, 36) are notched out of the bent sheet metal part.

12. Instrument tray (2) according to one or more of the preceding claims, characterized in that the Spring tongues (34, 36) are notched out of the side leg (22, 24) and the base leg (28).

13. Instrument tray (2) according to one or more of the preceding claims, characterized in that a free end of preferably each of the spring tongues (34, 36) is designed or formed to form a rear-engaging region (40) or a rear-engaging bead.

14. Instrument tray (2) according to one or more of the preceding claims, characterized in that a free end of preferably each of the spring tongues (34, 36) is angled by more than 90°, preferably by at least 100°, preferably by at least 110° to the longitudinal extent of the spring tongue and thus forms a rear grip with an edge region delimiting a tray opening (6).

15. Instrument sieve (2) according to one or more of the preceding claims, characterized in that a free end of preferably each of the spring tongues (34, 36) forms a run-on bevel of the respective spring tongue, which, when the base part (16) is pressed in the direction of the underside (10) of the sieve support structure (4), runs against an edge region delimiting a sieve opening (6) and is deflected in the process in order to lock into a rear engagement position with the edge region.

16. Instrument sieve (2) according to one or more of the preceding claims, characterized in that the instrument sieve (2) has a sieve support structure (4) with in particular rectangular and preferably square sieve openings (6) which are are limited by webs (18) that are narrower than the side length of the rectangular shape or than a largest dimension of the sieve openings (6).

17. Instrument sieve (2) according to claim 16, characterized in that the instrument sieve (2) is rectangular in a plan view of the underside (10) with a corresponding longitudinal direction and transverse direction and that the webs (26) delimiting the sieve openings (6) run at an inclination of 45° to the longitudinal direction or transverse direction.

18. Instrument sieve (2) according to one or more of the preceding claims, characterized in that the instrument sieve (2) comprises a 3-dimensionally structured, in particular corrugated, portafilter structure (4), in particular that the base part (16) can be arranged and fastened in the region of high points or mountains of the portafilter structure (4).

19. Instrument tray (2) according to one or more of the preceding claims 16, 17 or 18, characterized in that a distance between two adjacent spring tongues (34, 36) of a side leg (22, 24) corresponds to a distance between two intersection points of the webs (26) delimiting the tray openings (6) or is twice or an integer multiple thereof, so that the spring tongues (34, 36) can be positioned automatically in respective corner regions of the tray openings (6).

20. Instrument tray (2) according to one or more of the preceding claims, characterized by a Release instrument which can be applied from the inside through openings in the base part (16) against one or more spring tongues (34, 36) in the region of a side leg (22, 24) and as a result these spring tongues (34, 36) can be deflected from their rear grip position, so that the base part (16) can be released from a rear grip position on the instrument tray (2).

21. Foot part (12) for an instrument tray (2) for storing and preferably for holding one or more medical, in particular surgical, instruments and / or implants, in particular in a proper arrangement, according to one or more of the preceding claims, wherein the foot part (12) is arranged from the underside (10) of the portafilter structure (4) can be detachably fastened to the portafilter structure (4) at various selectable points on the underside (10), in that the respective foot part (12) comprises a base part (16), in particular made of a metallic material, which can be clipped into the portafilter structure (4) from the underside (10) of the portafilter structure (4), in particular by means of spring tongues (34, 36) and is held there in the clipped-in state, and a support part (18) made of an elastomeric material held thereon, and in that the support part (18) has at least one lateral groove (20) into which a side leg (22, 24) of the base part (16) engages in a form-fitting manner, so that the support part (18) is held captively on the base part (16) during normal use.

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