WO2007068011A1

WO2007068011A1 - Universal closure device

Info

Publication number: WO2007068011A1
Application number: PCT/AT2006/000487
Authority: WO
Inventors: Roland Heiml
Original assignee: Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H.
Priority date: 2005-12-14
Filing date: 2006-11-28
Publication date: 2007-06-21
Also published as: EP1963193A1; EP1963193B1; AT504003A1; AT504003B1; ES2580047T3

Abstract

The invention relates to a universal closure device (1) for openings (2) of sample containers (3) each of different cross sections (4). The closure device (1) comprises a shank part (6) which extends in the direction of a longitudinal axis (5) and has end regions (7, 8) spaced apart from one another in the direction of the longitudinal axis (5), also comprises a plurality of sealing elements (12, 16) which are arranged in the region of an outer surface (9) of the shank part (6) and are intended for positioning against an inner, preferably more or less cylindrical, lateral surface (11) of the sample container (3) which is to be closed, this lateral surface being directed towards the longitudinal axis (5), and further comprises a head part (10). A plurality of first sealing elements (12), which are separate from one another, are arranged on the shank part (6), in the circumferential direction thereof, on the side which is directed away from the head part (10).

Description

Universal closure device

The invention relates to a universal closure device for openings of sample containers, each having different cross-sections, wherein the closure device a extending in the direction of a longitudinal axis shank part with spaced apart in the direction of the longitudinal axis end portions, and a plurality arranged in the region of an outer surface of the shank portion Sealing elements for applying to one of the longitudinal axis facing inner, preferably approximately cylindrically shaped, lateral surface of the sample container to be closed and a head part comprises.

The different closure devices according to GB 1 111 656 A have a shaft with a closed end and on the side facing away from a head part in order to perform the handling of the closure device can. In order to be able to close different cross-sections of sample containers, a plurality of sealing elements running over the circumference are arranged in each case in the direction of the longitudinal axis on the shank part, as well as being distanced from one another. These have mutually different outer dimensions, wherein at least one of the sealing elements causes a corresponding sealing of the opening of the sample container in its inserted state. The individual sealing elements are designed as over the circumference continuous sealing lips. It could not be achieved in all cases a sufficient closure of sample containers with different opening widths.

From DE 39 39 092 Al a closure body made of an elastic material, in particular plastic, for insertion into threads of housings has become known. In this case, this has a preferably cylindrical part, on which the circumference at least two circumferential radially directed webs are provided for cooperation with the threads. At one end of the cylindrical part is still a flange-shaped head part for the system on the end face, a threaded bore defining housing wall provided. The radially directed webs have an outer diameter that corresponds approximately to the outer diameter of the thread and are arranged at a pitch that corresponds to the single or the integer multiples of the thread pitch plus at least approximately half of the thread pitch. As a result, a mutual bias is achieved within the thread and so on achieved good tight fit of the closure body. However, the radially directed webs may also have a helical design according to the course of the thread turn and be arranged offset from one another at the ends projecting towards each other in the direction of the longitudinal axis. In this case, a single web-shaped retaining element is designed to run continuously over the circumference.

GB 943 533 A describes a closure device in the form of a spout for insertion into bottle openings, with an approximately cylindrically shaped shaft part and a head part. Disposed on the shaft part in the direction of the longitudinal axis, a plurality of sealing lips running continuously over the circumference are arranged, which have mutually different outer dimensions. It was not possible in all cases to achieve a sufficient closure of sample containers with different opening widths.

The universal closure device according to WO 1998/21109 A1 serves for closing sample containers with mutually different opening cross-sections, with a shank part which is offset in each case in the direction of the longitudinal axis, and a head part. At the remote shaft parts each round continuous annular sealing lips are arranged, each with decreasing from the head portion cross-section. Each averted from the headboard and arranged on a paragraph sealing lip is used when placed in an opening with a smaller diameter as the head part and thus conditioning on the front side of the sample container. The head has two tubular components which are distanced from one another in the radial direction and between which reinforcing ribs extend. The outer peripheral portion of the outermost tubular member has a knurled surface for improving the grip. To vent the compressed air when inserting the closure device into the sample container, the latter has an opening arranged in an end wall. A disadvantage of this closure device is the large overall length for sealing different cross-sectional openings of the sample container.

A plug according to DE 958 989 C is used for insertion into tubes, bottles or the like. And has a head part and a shaft with sealing elements arranged thereon. The individual sealing elements are arranged spaced apart from each other in the longitudinal direction of the shank and designed as a circular sealing sleeves, which are formed continuously over the circumference. The sealing collars may have a smaller material thickness at their outer periphery than in the vicinity of the shank. , It could not be achieved in all applications, a sufficient closure of sample containers with different opening widths.

Another closure device according to CH 320 255 A has a disk-shaped head part and an adjoining shaft part. Arranged on the outer surface of the shaft part, in the direction of the longitudinal axis of the shaft, annular lips running through the outer circumference are arranged, which are intended to bear against the opening of the sample container to be closed. The sealing takes place by elastic deformation of the annular lips during insertion into the opening. This insertion movement can be facilitated by, seen in axial section, inclined contact surfaces. A secure closure of openings, each with different cross sections could not be achieved in all applications.

In previously known closure devices, it was common for a subsequent reclosure of the opening, a closure device has been used, which was to be selected depending on the size of the opening to be closed. In this case, the latter has sealing elements which are distanced from each other on the shaft part in the direction of its longitudinal axis and run continuously over the circumference, which sealing elements form the sealing end when inserted into the opening to be closed. This represents a high logistic effort especially in the field of automated sample analysis.

The present invention has for its object to provide a universal Verschlussvorrich- device for openings of sample containers, each with different cross-sections, which ensure at least a liquid-tight closure of the opening in pre-definable dimensional limits.

This object of the invention is achieved in that on the shaft part on the side facing away from the head part in the circumferential direction of the shaft part in a circumferential plane in each case a plurality of successively separate and first sealing elements are arranged. The surprising advantage resulting from the features of claim 1 lies in the fact that the sealing elements are arranged circumferentially on the shaft part of the closure device one behind the other. are arranged and can be done by the separate arrangement during the insertion movement of the closure device, a mutual relative displacement between the immediately adjacent sealing elements. Thus, it is possible, on the one hand, to close a plurality of openings with mutually different cross-sectional dimensions with a single closure device and, on the other hand, to achieve a secure fit or a sufficient hold of the closure device in the closure position. As a result of the intermediate space formed thereby, even if it is formed only to a very minimal extent, a flow-through opening is created for the compressed air during the closing process and it can escape from the interior space between the sample contents in the sample container and the closure device used. This further prevents accidental pushing out of the closure device from the opening. In addition, at least one liquid-tight closure of the opening is thereby achieved in the closed position and, when the sample container falls over, an escape of the sample contents, especially if this is formed by a liquid, such as a body fluid, in particular blood or its cellular constituents , Furthermore, it is also prevented during the storage of the samples until their destruction, an entry of dirt or other particles.

Also advantageous is a further embodiment according to claim 2, as this ensures an even safer passage of air between the individual sealing elements in the course of the insertion movement.

It is also advantageous embodiment according to claim 3, as this is the possibility for the escape of the compressed air even during the insertion movement at a sealing end against the lateral surface of the sample container still created.

Due to the design according to claim 4, it is possible that thereby a simple to produce closure device is provided, which can be made in an injection molding of plastic.

According to another embodiment variant according to claim 5 or 6, the insertion movement of the closure device is facilitated in the opening and in addition favors the mutual relative displacement between the individual sealing elements. Also advantageous is a development according to claim 7 or 8, since on the one hand the inherent rigidity of the sealing elements and on the other hand, the possible overlap path of the individual, directly adjacent sealing elements in the closed position or insert position can be determined.

In the embodiment according to claim 9 is advantageous that thereby ensures a better relative positional fixation of the closure device in the opening to be closed and thus tilting and thus a possible leakage is prevented.

The development according to claim 10 ensures that a simple to produce sealing element is thus created, in which, depending on the extent or strength of the deformation in the insert or closure position nevertheless over a predominant part of the circumference a whopping contact with the lateral surface of the opening is achieved.

According to another embodiment variant according to claim 11 or 12, the insertion movement of the closure device is facilitated in the opening and in addition favors the mutual relative displacement between the individual sealing elements.

Also advantageous are embodiments according to claims 13 to 15, as characterized for the sealing element in the use or closure position on the sealing elements predeterminable deformation ranges are determined and so the relative deformation of the sealing element to the different sizes of the openings to be closed are tuned.

Also advantageous is a development according to claim 16 or 17, since on the one hand the inherent rigidity of the sealing elements and on the other hand the possible overlap path of the individual, directly juxtaposed sealing elements can be set in the closed or insertion position.

According to an embodiment as described in claim 18, on the one hand the venting path for the air displaced during the deployment process is shortened and on the other hand a better position stabilization of the closure device in the opening is achieved.

In this case, embodiments according to claims 19 to 21 prove to be advantageous because As a result, depending on the different sizes of the openings to be closed it can be easily taken into account and additionally the liquid-tight closure by the sealing elements of the closure device can be easily determined.

According to advantageous developments according to claims 22 to 26 it is achieved that the relative deformation of the sealing elements is favored by the angular mutual displacement or rotation for the insertion process and so on the one hand, a sufficient tightness against leakage from the stockpiled in the interior of the bottom container samples achieved On the other hand, the displaced by the insertion movement air can escape quickly and safely.

Of advantage, however, is also an embodiment according to claim 27 or 28, as characterized in the use or sealing position a secured liquid-tight closure of the opening can be achieved by the sealing elements.

In accordance with claim 29 or 30, a sealing closure is achieved at the end region of the closure device facing the interior, and a centering function and thus a clear position and a sufficient hold of the closure device relative to the sample container are ensured in the further section on the lateral surface.

In the embodiment according to claim 31, on the one hand, a clear alignment of the closure device and, associated therewith, a complete abutment of the base part on the sample container is achieved, and on the other hand the handleability for a manual operation of the closure device is improved.

It is also possible an embodiment according to claim 32, since thereby the closure device for an automated sample analysis and thus connected for the automated closing is used.

The embodiment according to claim 33 enables an even better positional alignment of the closure device for the automated joining process of the closure device in the opening of the sample container. Also advantageous are embodiments according to claims 34 to 38, since thereby the exact positioning of the closure device during the automated handling and joining movement is significantly improved by automatic assembly machines. On the one hand, an even more precise pre-positioning for the joining process can thereby be effected and, on the other hand, a clear positional fixing of the closure device relative to the holding devices on the assembly system, such as grippers or the like, can take place.

According to advantageous developments according to claims 39 or 40, the rigidity and thus the strength is improved with low material use in the region of the head part. This makes it possible to transfer high forces from the assembly plant on the closure device with low weight and material cost.

However, an embodiment according to claim 41 is also advantageous since in this way the head part of the closure device can be easily adapted to different assembly processes, such as a manual or automated joining movement.

Finally, embodiments according to claims 42 to 44 prove to be advantageous, because on the one hand the space requirement for the shaft part can be kept low and on the other hand, a pre-centering of the closure device at the beginning of the insertion can be done in the opening.

The invention will be explained in more detail below with reference to the embodiments illustrated in the drawings.

Show it:

1 shows a closure device according to the invention with a plurality of sealing elements, in a simplified perspective view;

2 shows the closure device according to FIG. 1, in a simplified perspective view;

3 shows the closure device according to FIGS. 1 and 2 prior to insertion into a sample container, cut in view; 4 shows the closure device according to FIGS. 1 to 3 in plan view;

5 shows a further possible embodiment of the closure device with a plurality of sealing elements, in a simplified perspective view;

6 shows another embodiment of the closure device with a plurality of sealing elements, in a simplified perspective view;

7 shows a further embodiment of the closure device with a plurality of sealing elements offset relative to one another, in a simplified diagrammatic view;

8 shows another embodiment of the closure device with a plurality of mutually offset sealing elements, in a simplified perspective view;

9 shows the closure device according to FIG. 8, in a side view and simplified illustration;

10 shows a further embodiment of the closure device with a plurality of sealing elements, in a simplified perspective view;

FIG. 11 shows the closure device according to FIG. 10 in a simplified perspective view; FIG.

12 shows another embodiment of the closure device with a plurality of sealing elements, in side view and simplified illustration;

13 shows a further possible embodiment of the closure device with a plurality of sealing elements, in a simplified perspective view;

FIG. 14 shows the closure device according to FIG. 13 in a simplified perspective view; FIG.

FIG. 15 shows another embodiment of the closure device; FIG.

FIG. 16 shows the closure device according to FIG. 15 in a simplified perspective view; FIG. Fig. 17 shows another possible embodiment of the closure device with several on

Shank part successively arranged sealing elements, in a simplified perspective view;

18 shows another embodiment of the closure device with a plurality of sealing elements arranged one behind the other on the shaft part, in a simplified perspective view;

19 shows a further embodiment of the closure device with a plurality of sealing elements arranged one behind the other on the shaft part, in a simplified diagrammatic view;

FIG. 20 shows the closure device according to FIG. 19 in a simplified perspective view; FIG.

21 shows a closure device according to FIGS. 17 to 19 in the position inserted into the sample container, in side view and in a simplified schematic representation;

FIG. 22 shows the closure device according to FIG. 21, but with a smaller size of the opening of the sample container; FIG.

23 shows another embodiment of the closure device with a plurality of sealing elements arranged on the shaft part in succession in the circumferential direction and at the end facing away from the head part, in a simplified diagrammatic view;

24 shows a further embodiment of the closure device with a plurality of sealing elements arranged on the shaft part in succession in the circumferential direction and at the end facing away from the head part, in a simplified diagrammatic view.

By way of introduction, it should be noted that in the differently described embodiments identical parts are provided with the same reference numerals or the same component designations. in which the disclosures contained in the entire description can be applied mutatis mutandis to the same parts with the same reference numerals or the same component designations. Also, the position information selected in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to a new position analogous to the new situation. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions.

All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. the indication 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10.

FIGS. 1 to 4 show a universal closure device 1 for openings 2 of sample containers 3, each having different cross-sections 4. It is provided that the universal closure device 1 can be inserted into different sample containers 3, wherein these sample containers 3 each have in their size different openings 2 with the corresponding cross-sections 4.

With circularly formed sample containers 3, as may be the case, for example, with blood collection tubes or the like, they can have an inner cross-section or a clear diameter with a lower limit of 8 mm, preferably 11 mm and an upper limit of 18 mm, preferably of 14 mm. Depending on the selected sample container 3, regardless of the selected cross-section 4, the same universal closure device 1 can always be used to close the openings 2. The universal closure devices 1 according to the invention are used when the sealing device usually comprising a sealing and at least one pierceable sealing plug is removed from the opening 2 of the sample container 3 for the sampling and then the universal closure device 1 for closing the opening 2 for further storage is used. All the closure described below Directions 1 serve to ensure at least a liquid-tight closure of the opening 2 during the storage period of the sample. Therefore, the use of only a single closure device 1 for a variety of different clear cross-sections 4 is advantageous because regardless of the size of the opening to be closed 2 of the sample container 3 always within certain limits, the same universal closure device 1 can be used.

The closure device 1 shown here has a shaft part 6 extending in the direction of a longitudinal axis 5 with end regions 7, 8 which are distanced from one another in the direction of the longitudinal axis 5. The shank part 6 further has an outer surface 9 between the two spaced-apart end regions 7, 8. In the area of the first end region 7, the closure device 1 further comprises a head part 10, which serves to handle the closure device 1.

The sample container 3 has, in the region of its interior, on the side facing the longitudinal axis 5, at least in that region in which the closure device 1 is to be inserted, a preferably approximately cylindrical lateral surface 11.

On the shaft part 6 a plurality of mutually separate first sealing elements 12 are arranged in the embodiment shown here on the side facing away from the head part 10 in the circumferential direction of the shaft part 6. The individual first sealing elements 12 are circumferentially arranged behind one another and preferably in the same plane. The first sealing elehiente 12 shown here are distributed over the circumference, preferably immediately adjacent to each other, arranged and may be formed for example by circular ring sections. In this case, as can be seen in simplified form from FIGS. 1 and 2, the first sealing elements 12 may be arranged at least partially spaced from one another in a starting position located outside the opening 2. The shaft part 6 has, as briefly described above, the two mutually distanced end portions 7, 8, wherein in this embodiment shown here, the first sealing elements 12 are arranged immediately adjacent to the end portion 8, which is averted from the head part 10.

Furthermore, the first sealing elements, starting from the shank part 6, can be arranged in the direction of the head part 10 in a common, frustoconically widened enveloping surface be. Thus, a cone angle 13 enclosed by the first sealing elements 12 can consist of a selected one with a lower limit of 70 °, preferably 90 °, in particular 100 °, preferably 120 ° and with an upper limit of 178 °, preferably 170 °, in particular 150 ° , preferably of 140 °, is selected.

At least one first gap 14 is formed between the directly adjacent first sealing elements 12, wherein the gap 14 extends in the direction of the shaft part 6, starting from an edge area 15 of the first sealing elements 12 that can be turned over from the inner circumferential surface 11 of the sample container. It is also possible that the first gap 14 extends continuously between the outer edge region 15 of the first sealing elements 12 up to the outer surface 9 of the shaft part 6, as indicated in simplified fashion in FIG. 2 by dashed lines.

Furthermore, the closure device 1 comprises, in addition to the first sealing elements 12, further sealing elements 16, which are likewise arranged on the shaft part 6. These further sealing elements 16 are arranged in the direction of the longitudinal axis 5 between the head part 10 and the first sealing elements 12 on the shaft part 6. In this case, the further sealing elements 16 kreisringformig or else are formed by circular ring sections. Likewise, the further sealing element 16, similar to the first sealing elements 12, starting from the shaft part 6 in the direction of the head part 10 can be frusto-conically widening, wherein a cone angle 17 enclosed by the further sealing element 16 or the sealing elements 16 from a selected area with a lower Limit of 70 °, preferably 90 °, in particular 100 °, preferably 120 ° and with an upper limit of 178 °, preferably 170 °, in particular 150 °, preferably 140 °, be selected.

Furthermore, it is also possible that in the further sealing element 16 at least one further gap 18 passing through it is arranged and the further gap 18 extends from the inner surface 11 of the sample container 3 zuwendbaren edge portion 19 in the direction of the shaft portion 6 out. In this case, the further gap 18 can also be designed to extend continuously between the outer edge region 19 of the further sealing element 16 as far as the outer surface 9 of the shaft part 6. Furthermore, it can prove to be advantageous if at least some of the first and second gaps 14, 18 are aligned in the direction of the longitudinal axis 5, ie one behind the other, in the region of the sealing axis. elements 12, 16 are arranged. In this case, the gap 14, 18 between the immediately adjacent sealing elements 12 and 16 have a width 20 with a lower limit of 0 mm and an upper limit of 1.5 mm. Likewise, however, it would also be possible for the width 20 of the gaps 14, 18 to have a different shape over their longitudinal extension, starting from the edge region 15 or 19, toward the shaft part 6 or the outer surface 9. Regardless of this, it would also be possible for the width 20 of the gap or gaps 14, 18 over the longitudinal extension, starting from the outer edge region 15, 19 of the sealing elements 12, 16, to be continuously decreasing in the direction of the outer surface 9 of the shaft part 6 ,

If the closure device 1 is inserted into the opening 2 of the sample container 3, mutual relative displacement of the individual sealing elements 12 and / or 16 takes place relative to each other and the at least initially separate sealing elements 12, 16 can at least partially overlap. This position is then referred to as the so-called deployment position.

As can best be seen from a comparison of FIGS. 1, 3 and 4, the head part 10 comprises a disc-shaped base member 21 which is oriented perpendicular to the longitudinal axis 5 and a tubular member projecting from the base member 6 in the direction away from the shaft part 6 Edge part 22. The tubular edge part 22 is arranged on the outer circumference of the base part 21 and preferably integrally connected to it. Furthermore, it is possible to arrange ribs and / or recesses on the outer circumference of the tubular edge part 22 in order to improve the grip of the closure device 1. Preferably, the ribs or webs or recesses extend parallel to the longitudinal axis 5.

Furthermore, a recess 23 may be arranged in the base part 21 in the region of the longitudinal axis 5 and centrically to the latter, wherein this recess 23 may extend into the shaft part 6 at least in regions in the direction of the longitudinal axis 5. Depending on the dimensioning of the shaft part 6, it may be formed from a solid material or else tubular. It is essential that this has a sufficient tightness (liquid-tight and / or gas-tight). It is further advantageous when a tubular support member 24 is arranged on the base part 21, in particular connected to this, the central axis 25 is aligned in alignment with the longitudinal axis 5 of the base part 21 and shaft part 6. As a result, a centric arrangement of the tubular support part 24 with respect to the shaft part 6 or the recess 23 arranged in the base part 21 is achieved. In this case, the rohrformige support member 24 may be formed such that it is arranged in the peripheral region of the recess 23 in the base part 21. Thus, the rohrformige support member 24 may have a clear inner cross section, which corresponds approximately or exactly that clear cross section of the recess 23 in the base part 21. If the rohrformige support member 24 for receiving in an automatic handling device used, it is advantageous if the rohrformige support member 24 at least partially on one of the longitudinal axis 5 facing inner surface is bounded by an approximately cylindrically shaped first centering surface 26 and the central axis 25 of this Centering surface 26 and the rohrformigen support member 24 is aligned parallel to and aligned with the longitudinal axis 5. In addition, however, the recess 23 may be limited by an approximately cylindrically shaped further centering surface 27, wherein the central axis 25 is also aligned parallel to and aligned with the longitudinal axis 5. In order to be able to use a centering receptacle (not shown here) or a centering pin in the tubular support part 24 or the recess 23 in the base part 21, it is advantageous if at least the centering surface 26 has an insertion surface widening on the side facing away from the longitudinal axis , such as a radius or bevel.

For stiffening the base part 21, at least one, but preferably a plurality of ribs 28 can be arranged on the side remote from the shaft part 6. In this case, the ribs 28 can be arranged continuously between the mutually facing sides of the rolirförmigen edge part 22 and the rohrformigen support member 24. Preferably, however, the ribs 28 are aligned such that they, starting from the rohrformigen edge portion 22 extend radially toward the longitudinal axis 5, whereby an approximately centric or star-shaped arrangement is achieved.

A height 29 of the rohrformigen edge portion 22 seen in the direction of the longitudinal axis 5 is with respect to an outer cross-sectional dimension 30 of the head part 10 and the base part 21 in a direction perpendicular to the longitudinal axis 5 level of a selected area with a lower limit of 8%, preferably 10% , in particular 12%, preferably 18%, and with an upper limit of 100%, preferably 50%, in particular 30%, preferably 25%.

The shank part 6 may be formed in the end region 8 facing away from the head part 10 approximately planar to the sealing elements 12 arranged on the shank part 6, but this may also have a conclusion independently of it, which seen in axial section with respect to the longitudinal axis 5 convexly curved and / or spherical and / or conical may be formed. In addition, however, the shaft part 6 may project beyond the first sealing elements 12 to the side facing away from the head part 10 side. Depending on the design of the shaft end in its end region 8, the joining operation of the closure device 1 into the opening 2 of the sample container 3 can be facilitated.

FIGS. 5 and 6 show further possible and optionally independent embodiments of the universal closure device 1, with the same reference numerals or component designations being used again for identical components as in the preceding FIGS. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs. 1 to 4 or reference.

The closing device 1 shown in FIG. 5 again comprises the head part 10, the adjoining shaft part 6 and the first sealing elements 12 arranged in the end region 8 facing away from the head part 10, which are widening in the direction of the head part 10 in the form of a truncated cone , The individual sealing elements 12 are in turn separated from one another by first gaps 14, whereby a plurality of these sealing elements 12 are again arranged or formed over the circumference.

Between the first sealing elements 12 and the head part 10, the further sealing elements 16 are in turn arranged on the outer surface 9 of the shaft part 6. The individual sealing elements 16 are in turn separated from one another by the previously described gaps 18, which extend starting from the edge region 19 in the direction of the outer surface 9 of the shaft part 6.

Furthermore, it is shown schematically schematically in the second sealing elements 16 that the inner circumferential surface 11 of the sample container 3 zuwendbare edge region 19 of the or further sealing elements 16 with respect to a plane perpendicular to the longitudinal axis 5 aligned plane and seen over the circumference, having a different direction in the vertical direction on the plane distance. In this case, the edge region 19 of the further sealing element 16 seen over the circumference with respect to the plane perpendicular to the longitudinal axis 5 aligned plane wave-shaped running. Furthermore, the undulating configuration of the further sealing element 16 extends, starting from the edge region 19 as far as the outer surface 9 of the shaft part 6.

The cone angles 13 and 17 for the sealing elements 12 and 16 can in turn be selected in the lower or upper limits already described above. In this embodiment shown here, the first cone angle 13 in the first sealing elements 12 has a size of 90 ° and the other cone angle 17 of the second sealing elements 16 has a size of 170 °.

The formation of the head part 10 may also correspond to the embodiments, as has already been described in detail previously. It would also be possible regardless, for example, to omit the support member 24 in the region of the recess 23.

In the exemplary embodiment of the closure device 1 shown in FIG. 6, the sealing element 12 arranged in the end region 8 facing away from the head part 10 is formed continuously over the circumference, whereas the second sealing elements 16 are separated from one another by the gaps 18 arranged therebetween, as in the left Part of Fig. 6 is shown. Regardless of this, it would also be possible to provide a notch or a notch as a vent opening in the edge region 19 of the second sealing element 16, as shown in simplified fashion in the right part in the region of the second sealing elements 16 arranged directly next to one another or behind one another. In this case, the sealing element 16 only a small radial extent and the remaining part is designed as a support element for the or the sealing elements 16.

However, it would also be possible to arbitrarily combine the first sealing elements 12 shown in FIG. 5 with the second elements 16 shown in FIG. 6 and between them the gap 18 and / or the notch 31 for separating or forming the sealing elements 16 to arrange or provide. FIGS. 7 to 9 show further possible and optionally independent embodiments of the universal closure device 1, with the same reference numerals or component designations being used again for the same parts, as in FIGS. 1 to 6 above. Likewise, to avoid unnecessary repetition, reference is made to the detailed description in the preceding FIGS.

In these embodiments of the closure device 1 shown here, the sealing elements 12 and / or 16 are each formed by sections of screw surfaces with circumferentially spaced apart arranged starting and end portions 32, 33. Likewise, the other sealing elements 16 may each be formed by sections of further helical surfaces with circumferentially spaced from each other arranged beginning and end portions 34, 35. Furthermore, in each case the starting region 32 or 34 of a sealing element 12 or 16 is offset relative to the circumferentially directly upstream end region 33 or 35 of a sealing element 12 or 16 in the direction of the longitudinal axis 5. By means of these staggered starting regions 32 and 34 and end regions 33 and 35, respectively, the individual sealing elements 12 and 16 are distanced or separated from one another by the gap 14 or 18. This separation is not only formed in the radial direction but also additionally in the direction of the longitudinal axis 5. The gaps 14 and 18 extend from the edge regions 15 and 19, respectively, up to the outer surface 9 of the shaft part 6.

Furthermore, the individual starting areas 32 and / or the end areas 33 of the first sealing elements 12 can each be arranged in their own common planes oriented perpendicular to the longitudinal axis 5. The same also applies to the individual initial regions 34 and / or end regions 35 of the second sealing elements 16.

However, the individual sealing elements 12 and 16 according to the description of FIGS. 7 to 9 can also be formed by sections of a screw flight, a helical surface or a helix, in which case the term "propeller blades" can also be selected.

FIGS. 10 and 11 show a further possible and optionally separate embodiment of the closure device 1, with the same reference numerals and identical component designations again being used for identical parts as in the preceding FIGS. 1 to 9. be used. Likewise, to avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs.

This closure device 1, in turn, also comprises the head part 10, the shaft part 6 arranged thereon, with the end regions 7, 8 distanced from one another. On the outer surface 9 of the shaft part 6, in turn, the sealing elements 12, 16 are arranged, in which case again a separation of the sealing elements 12, 16 takes place through the gap 14 in the end region 8 in the sealing elements 12 and through the gap 18 in the other sealing elements 16. In this embodiment shown here, the two cone angles 13 and 17 are the same and each have a size of 150 °. The shaft part 6 has in its end region 8 a planar to slightly convex cross-sectional shape in its axial section, wherein the sealing elements 12 are arranged to extend to this.

The columns 14 and 18 extend from the edge regions 15 and 19 only in regions in the radial direction towards the outer surface 9 of the shaft portion 6. As a result, the individual sealing elements 12, 16 only partially between the edge regions 15 and 19 and outer surface 9 of the Schafitteils 6.

The remaining circular ring or circular ring section between the end of the gaps 14, 18 and the outer surface 9 of the shaft part 6 then serves as a holding or supporting element for the sealing elements 12 and 16, respectively.

The head part 10 may be formed in accordance with one of the embodiments described above, wherein here again in the region of the longitudinal axis 5 of the support member 24 on the base part 21 is arranged. Between the edge portion 22 and the support member 24, in turn, the ribs 28 are formed or arranged.

Furthermore, it can be seen in this illustration that the shank part 6 has a slightly larger outer dimension or a larger outer diameter compared to the previously shown embodiments, whereby the area of use for closing the openings 2 of the sample containers 3, for example to an extent between 11 mm and can reduce 14 mm. FIG. 12 shows a further and optionally possible independent embodiment of the closure device 1, again using the same reference numerals or component designations for the same parts as in the preceding FIGS. 1 to 11. Likewise, to avoid unnecessary repetition, reference is made to the detailed description in the preceding FIGS. 1 to 11.

In this embodiment shown here, in the direction of the longitudinal axis 5 on the shaft part 6 spaced from each other arranged sealing elements 12 and 16 are in turn separated by the columns 14, 18 arranged between them. It can be seen that the position of the two columns 14, 18 offset from each other seen in the direction of the longitudinal axis 5, for example, by an extent of 90 °, is selected. In each case two of these columns 14 and 18 are peripherally provided and arranged, as described above, offset from each other.

FIGS. 13 and 14 show a further possible and, if appropriate, independent design of the dispensing device 1, again using the same reference numerals or component designations for the same parts as in the preceding FIGS. 1 to 12. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs. 1 to 12 or reference.

The closure device 1 comprises at least the head part 10 and the subsequently arranged shaft part 6. At this are in the region of its outer surface 9 Tragbzw. Holding elements 36 and 37 arranged for the arranged or formed thereon sealing elements 12 and 16 respectively. The sealing elements 12 and 16 are circumferentially formed on the supporting or holding elements 36 and 37 by notches 31 arranged or formed in the edge regions 15 and 19, respectively. These notches 31 serve, in the course of the insertion process of the closure device 1 into the opening 2 of the sample container 3, to allow the amount of residual air contained in the interior of the sample container 3 to pass between the sealing elements 12 and 16 and the inner jacket surface 11 of the sample container 3. This is therefore of great importance, since otherwise the air present in the interior would be compressed and with low holding force, the closure device 1 would be pushed out of the opening 2 of the sample container 3 by the internal pressure built up. For the storage of the sample container 3 with the closure device 1 used, there can be no risk of leakage of contained samples through the opening 2, since the air can pass through with a correspondingly selected size or the cross section of the notches 31, but leakage occurs with liquid sample contents is prevented. Preferably, the notches 31 seen between the individual sealing elements 12 and 16 in the direction of the longitudinal axis 5, circumferentially offset from one another.

The cone angles 13 and 17 of the sealing elements 12 and 16 and their supporting or holding elements 36, 37 are selected here in the order of 172 °. The shaft part 6 protrudes beyond the support or holding element 36 of the sealing element 12 with its end region 8 and is formed in the form of a cup or a dome. As a result, an insertion process of the closure device 1 into the opening 2 of the sample container 3 is safer and easier to perform.

FIGS. 15 and 16 show a further possible and optionally separate embodiment of the closure device 1, with the same reference numerals and component designations being used again for the same parts as in the preceding FIGS. 1 to 14. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs. 1 to 14, or referenced.

The closure device 1, in turn, comprises the head part 10 with the shaft part 6 arranged thereon and its outer surface 9. The sealing elements 12 and 16 are peripherally attached to the support areas at the edge regions 15 and 19, respectively, by the arrangement of notches 31. Holding elements 36 and 37 are formed. The notches 31 can also be formed by so-called passages 38, which are to be adapted in their size or their extent on the one hand to the venting process, and on the other hand to the tightness, in particular liquid tightness conclusion. The support and holding elements 36, 37 are annular, wherein the sealing elements 12 and 16 form through the arrangement of the notches 31 and enforcements 38 circular ring sections. At this point, it should be mentioned that the one or more carrying or holding elements 36, 37 are an integral part of the sealing elements 12 and 16 and the entire unit can also be referred to as sealing elements 12 and 16.

The sealing element (s) 12 or 16 as well as the support or holding elements 36, 37 can be made frustoconically starting from the shaft part 6 in the direction of the head part 10. The taper angle 13 or 17 enclosed by the sealing elements 12 and 16, respectively, is selected from a selected range having a lower limit of 70 °, preferably 90 °, in particular 100 °, preferably 120 ° and an upper limit of 178 °, preferably 170 °, in particular 150 °, preferably selected from 140 °. Furthermore, the notches 31, or penetrations 38, can extend in the direction of the shank part 6, starting from the edge region 15 or 19 of the sealing element 12 or 16 which can be turned towards the inner circumferential surface 11 of the sample container 3.

Furthermore, it is shown in this exemplary embodiment that the inner circumferential surface 11 of the sample container 3 zuwendbare edge region 15 and 19 of the sealing elements 12 and 16 with respect to the plane perpendicular to the longitudinal axis 5 aligned plane, as well as seen over the circumference in a vertical direction on the Level has different distances. Thus, the edge region 15 or 19 of the sealing element 12 and 16 seen over the circumference with respect to the aligned perpendicular to the longitudinal axis 5 plane be wavy, with the undulating formation of the sealing element 12 and 16 and optionally the support or holding elements 36 37, starting from the edge region 15 or 19, respectively, can extend to the outer surface 9 of the shaft part 6. This results in a predeterminable deformation of the sealing elements 12 or 16 or of the support or holding elements 36, 37 during the insertion process into the opening 2 of the sample container 3, whereby a circumferential sealing contact of the sealing elements 12 and 16, at least over one Main part of the outer periphery in the region of the lateral surface 11 of the opening 2 can be achieved.

FIGS. 17 to 20 show further possible and optionally independent embodiments of the closure device 1, with the same reference numerals or component designations being used again for the same parts as in the preceding FIGS. 1 to 16. Likewise, to avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs.

This universal closure device 1 in turn has the head part 10 and the shaft part 6 extending in the direction of the longitudinal axis 5 with end regions 7, 8 distanced from one another in the direction of the longitudinal axis 5. In the area of the outer surface 9 of the shaft part 6, a plurality of sealing elements 12 are provided for application on the inner axis facing the longitudinal axis 5 and not shown here in detail, preferably approximately cylindrically shaped, The lateral surface 11 of the sample container 3 to be closed is provided. In this case, the individual sealing elements 12 seen over the circumference formed continuously and have in one, located outside the opening starting position, and starting from the head part 10, respectively, an outer cross-section 39, 40, with respect to the cross section 39 of the directly in the direction of Longitudinal axis 5 seen upstream sealing element 12 is formed smaller. Furthermore, in one, inserted into the opening 2 closing position of at least one of the sealing elements 12 on the longitudinal axis 5 facing the inner circumferential surface 11 of the opening 2 of the sample container to be sealed 3 sealingly, as shown in detail and described in one of the following figures will be.

Preferably, the cross-sections 39, 40 of the sealing elements 12 are selected so that at least one further sealing element 12 is supported at the, the longitudinal axis 5 facing, inner circumferential surface 11 of the opening 2 of the sample container to be closed 3 at least partially supported or inserted in the opening position 2 inserted closure position is attached to it. As a result, a better centering function of the closure device 1 is achieved. Furthermore, it is advantageous if the outer cross-sections 39, 40 of the individual sealing elements 12 are each formed slightly larger than the respective clear cross-sections 4, or dimensions of the corresponding sealing element 12 to be closed opening 2 of the sample container 3. This is always from at least one of the sealing elements 12 a whopping investment on the inner circumferential surface 11 of the opening 2 achieved.

Since the individual sealing elements 12 are formed here continuously, they form an annular cross-section. Furthermore, it is also possible that the sealing elements 12, starting from the shaft part 6 at least partially in the direction of the head part 10 out, frustoconical widening are formed. Thus, a cone angle 13 enclosed by the sealing element 12 or by the sealing elements 12 can be selected from a selected range with a lower limit of 70 °, preferably 90 °, in particular 100 °, preferably 120 ° and with an upper limit of 178 °, preferably 170 ° °, in particular 150 °, preferably 140 ° be selected.

The construction of the head part 10 may be selected according to one of the previously described embodiments. For example, FIG. 17 shows a head part 10 whose edge part 22 has a low height 29 relative to the cross section or the dimension of the base part. sisteils 21 has. The ribs 28 extend starting from the edge part 22 in the direction of the recess 23, in which case the arrangement of the support part 24 has been dispensed with. But it would also be possible to provide the support member 24 here as well.

In the case of the sealing elements 12 shown in FIGS. 17 and 18, the cone angle 13 is formed in a size of 180 °-that is, in a planar manner-relative to the plane oriented perpendicular to the longitudinal axis 5.

19 and 20 it can be seen that here too the individual sealing elements 12, viewed in the direction of the longitudinal axis 5, are arranged at a distance from one another on the outer surface 9 of the shaft part 6 and starting from the head part 10 relative to one another have different cross sections 39, 40. Further, it is possible that the sealing member 12, particularly its edge portion 15, a taper angle 13 of, for example 178 ° and thus has nearly planar or only slightly inclined to the perpendicular to the longitudinal axis ¹ 5 oriented plane.

FIGS. 21 and 22 each show the same universal closure device 1 in its closed position, ie in the position in the sample container 3 inserted in the opening 2.

In FIG. 21, the sample container 3 has a larger cross-section 4 than the opening 2 shown in FIG. As can be seen from a combination of these two FIGS. 21 and 22, the individual sealing elements 12 in the sample container 3 with the smaller cross-section 4 are deformed more towards the head part 10 than in the case of a sample container 3 according to FIG. 21 is the case. In any case takes place in the of the

Closure device 1 cross-sectional area always a secure closure of the opening 2 for the interior of the sample container. 3

FIG. 23 shows a possible and optionally independent embodiment of the closure device 1, with the same reference numerals and component designations being used again for the same parts as in the preceding FIGS. 1 to 22. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs. 1 to 22 or referenced. This closure device 1 again comprises the head part 10 and the shaft part 6 extending in the direction of the longitudinal axis 5. In the region of its outer surface 9, a plurality of supporting or holding elements 36 are arranged thereon, which extend starting from the head part 10 facing end portion 7 extend toward the other end portion 8 and are preferably aligned parallel to the longitudinal axis 5. Subsequent to the carrying or holding elements 36, the sealing elements 12 are arranged, which are formed here by flap-shaped components 41. Seen in the vertical direction or radially on the longitudinal axis 5, these sealing elements 12 or components 41 have a curved or arcuate longitudinal course and may additionally also have an arcuate end section or end section in their edge regions. In the position shown here outside of the sample container 3, the gap 14 is formed in each case between the sealing elements 12 or flap-shaped component 41, starting from the shaft part 6, in order to allow the air compressed in the interior of the sample container 3 to escape during the insertion movement.

At the same time, however, the individual supporting and holding elements 36 can also have an arcuate course in the radial direction when viewed in the direction of the longitudinal axis 5, in which case the convexly curved section of the carrying or holding element 36 faces the opposite side with respect to the sealing element 12 or Lobe-shaped member 41 is formed. A wall thickness of the carrying or holding elements 36 and the sealing elements 12 is preferably uniformly selected.

When inserting the closure device 1 in the opening 2 of the sample container 3, the individual support or: holding elements 36 come to the outer surface 11 of the sample container 3 to the system and are seen here when viewed in the direction of the longitudinal axis 5, counterclockwise in the direction of the upstream Supporting or holding element 36 deformed out. As a result, a line-shaped contact of the individual support or holding elements 36 on the lateral surface 11 of the sample container 3 is achieved. Due to this displacement, a relative displacement of the sealing elements 12 or lobe-shaped components takes place in the counterclockwise direction, whereby the individual sealing elements 12 are brought into abutment against each other and in turn the desired closure is achieved. In this case, the end regions of the individual sealing elements 12 come to bear on the outer curvature region of the upstream sealing element 12 and / or support or holding element 36, whereby the sealing is achieved. FIG. 24 shows a further possible and optionally independent embodiment of the closure device 1, with the same reference numerals and component designations being used again for the same components as in the preceding FIGS. 1 to 23. Likewise, to avoid unnecessary repetition, reference is made to the detailed description in the preceding FIGS. 1 to 23.

In contrast to the illustration in FIG. 23, the individual support or holding elements 36, seen in the direction of the longitudinal axis 5, have a curvature opposite thereto, in which case the convexly curved section of the support or holding elements 36 points in the direction of the sealing element 12 or flap-shaped member 41 protrudes. This is done at the onset of this closure device 1, a relative displacement or deformation of the individual Tragbzw. Holding elements 36, starting from the outer surface 9 of the shaft portion 6 in a clockwise direction. As a result of this relative displacement, the individual sealing elements 12 or flap-shaped components 41 are pushed over at least in sections, whereby the gap 14 formed between them is again closed with corresponding displacement or deformation and the mutual contact and the associated sealing takes place.

Finally, it should be pointed out that the universal closure device 1 is preferably produced from a plastic part in an injection molding process. When inserting the closure device 1 in the opening to be closed 2, the shortest possible hold time for the assembly plant is to be achieved, in which the closure device lan the sample container 3 must be pressed. In this short period of time between 0.1 s and 1.0 s, preferably of 0.3 s, the air must have escaped through the gaps 14, 18 and / or notches 31 or openings 38, so that a pressure equalization can take place ,

The embodiments show possible embodiments of the universal closure device 1, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather also various combinations of the individual embodiments are possible with each other and this variation possibility due to the teaching of technical action by objective invention in the skill of working in this technical field expert. So there are all conceivable variants, by combinations of individual Details of the illustrated and described embodiment variant are possible, including the scope of protection.

For the sake of the order, it should finally be pointed out that for a better understanding of the construction of the universal closure device 1, these or their components have been shown partly unevenly and / or enlarged and / or reduced in size.

The problem underlying the independent inventive solutions can be taken from the description.

Above all, the individual in FIGS. 1, 2, 3, 4; 5; 6; 7; 8, 9; 10, 11; 12; 13, 14; 15, 16; 17; 18; 19, 20; 21, 22; 23; 24 embodiments form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures.

REFERENCE NUMBERS

1 closure device 36 supporting or holding element

2 opening 37 supporting or holding element

3 sample containers 38 enforcement

4 Cross section 39 Cross section

5 longitudinal axis 40 cross section

6 shaft part 41 component

7 end area

8 end area

9 surface

10 headboard

11 lateral surface

12 sealing element

13 cone angles

14 gap

15 border area

16 sealing element

17 cone angle

18 gap

19 border area

20 width

21 base part

22 edge part

23 recess

24 support part

25 central axis

26 centering surface

27 centering surface

28 rib

29 height

30 cross-sectional dimension

31 notch

32 start area

33 end area

34 start area

35 end area

Claims

Patent claims

1. Universal closure device (1) for openings (2) of sample containers (3) each having different cross sections (4), wherein the closure device (1) extending in the direction of a longitudinal axis (5) shank portion 6) with in the direction of the longitudinal axis ( 5) spaced-apart end regions (7, 8), and a plurality of in the region of an outer surface (9) of the shaft part (6) arranged sealing elements (12, 16) for applying to one of the longitudinal axis (5) facing inner, preferably approximately cylindrically shaped, Mantle surface (11) of the sample container (3) to be closed and a head part (10) encompassed, characterized in that the Schafitteil (6) on the side facing away from the head part (10) in the circumferential direction of the shaft part (6) in a circumferential plane in each case a plurality of successively separate and separate first sealing elements (12) are arranged.

2. Closure device (1) according to claim 1, characterized in that the circumferential direction in succession arranged first sealing elements (12) in one outside the

Opening (2) located starting position are at least partially distanced from each other.

3. Closure device (1) according to claim 1 or 2, characterized in that the first sealing elements (12) are arranged immediately adjacent to that end region (8) which is averted from the head part (10).

4. Closure device (1) according to one of the preceding claims, characterized in that the first sealing elements (12) are formed by circular ring sections.

5. Closure device (1) according to one of the preceding claims, characterized in that the first sealing elements (12) starting from the shaft part (6) in the direction of the head part (10) are arranged in a common, frusto-conically widening envelope surface.

6. Closure device (1) according to claim 5, characterized in that one of the first sealing elements (12) enclosed cone angle (13) from a selected range with a lower limit of 70 °, preferably 90 °, in particular 100 °, preferably from 120 ° and with an upper limit of 178 °, preferably 170 °, in particular 150 °, preferably selected from 140 °.

7. Closure device (1) according to one of the preceding claims, characterized in that between the circumferentially immediately adjacent each other first

Sealing elements (12) at least a first gap (14) is formed and the gap (14) starting from one of the inner circumferential surface (11) of the sample container (3) zuwendbaren edge region (15) of the first sealing elements (12) in the direction of the shaft part (6).

8. Closure device (1) according to claim 7, characterized in that the first gap (14) extends continuously between the outer edge region (15) of the first sealing elements (12) up to the outer surface (9) of the shank part (6).

9. Closure device (1) according to one of the preceding claims, characterized in that between the first sealing elements (12) and the head part (10) at least one further sealing element (16) on the shaft part (6) is arranged.

10. Closure device (1) according to claim 9, characterized in that the further sealing element (16) is annular.

11. Closure device (1) according to claim 9 or 10, characterized in that the further sealing element (16), starting from the shank part (6) in the direction of the head part (10) towards frustoconical widening is formed.

12. Closure device (1) according to claim 11, characterized in that a further sealing element (16) enclosed cone angle (17) from a selected range with a lower limit of 70 °, preferably 90 °, in particular 100 °, preferably of 120 ° and is selected with an upper limit of 178 °, preferably 170 °, in particular 150 °, preferably of 140 °.

13. Closure device (1) according to one of claims 9 to 12, characterized in that one of the inner circumferential surface (11) of the sample container (3) zuwendbarer edge region (19) of the further sealing element (16) with respect to a perpendicular to the longitudinal axis (5) aligned Plane and seen over the circumference, one, in the direction perpendicular to the plane, different distance.

14. Closure device (1) according to claim 13, characterized in that the edge region (19) of the further sealing element (16) seen in the circumferential direction with respect to the plane perpendicular to the longitudinal axis (5) aligned plane is formed wavy.

15. Closure device (1) according to claim 13 or 14, characterized in that the wave-shaped formation of the further sealing element (16) extends from the edge region (19) up to the outer surface (9) of the shaft part (6).

16. Closure device (1) according to one of claims 9 to 15, characterized in that in the further sealing element (16) at least one further enforcing this further gap (18) is arranged and the further gap (18) starting from one of the inner circumferential surface (16). 11) of the sample container (3) zuwendbaren edge region (19) in the direction of the shaft part (6) out.

17. Closure device (1) according to claim 16, characterized in that the further gap (18) extends continuously between the outer edge region (19) of the further sealing element (16) up to the outer surface (9) of the shaft part (6). extends.

18, closure device (1) according to any one of claims 7, 8, 16 or 17, characterized in that at least some of the first and second columns (14, 18) in the direction of the longitudinal axis (5) are arranged in alignment with each other.

19 closure device (1) according to any one of claims 7, 8 or 16 to 18, characterized in that the gap (14, 18) between the immediately adjacent sealing elements (12, 16) has a width (20) with a lower limit of 0 mm and an upper limit of 1.5 mm.

20. Closure device (1) according to claim 19, characterized in that the width (20) of the gap (14, 18) is formed differently over the longitudinal extent thereof.

21, closure device (1) according to claim 19 or 20, characterized in that the width (20) of the gap (14, 18) over its longitudinal extent, starting from the outer edge region (15, 19) of the sealing element (12, 16) in the direction of the outer surface (9) of the shaft part (6) is designed to decrease steadily.

22. Closure device (1) according to one of the preceding claims, characterized in that the first sealing elements (12) are each formed by sections of screw surface with circumferentially spaced apart arranged starting and end portions (32, 33).

23. Closure device (1) according to one of claims 9 to 22, characterized in that the further sealing elements (16) are each formed by sections of helical surfaces with circumferentially spaced apart arranged starting and end portions (34, 35).

24. Closing device (1) according to claim 22 or 23, characterized in that of associated sealing elements (12; 16) in each case the starting region (32; 34) of a sealing element (12; 16) opposite to the circumferentially immediately upstream end region (33; ) of a sealing element (12; 16) offset in the direction of the longitudinal axis (5) is arranged.

25. Closure device (1) according to one of claims 22 to 24, characterized in that the individual initial regions (32) of the first sealing elements (12) are each arranged in a common plane perpendicular to the longitudinal axis (5) aligned plane.

26. Closure device (1) according to one of claims 22 to 25, characterized in that the individual initial regions (34) of the second sealing elements (16) are each arranged in a common plane perpendicular to the longitudinal axis (5) aligned plane.

27. Closure device (1) according to one of the preceding claims, characterized in that the first sealing elements (12) in an inserted into the opening (2) of the sample container (3) insert position at least partially overlap.

28, closure device (1) according to one of claims 9 to 27, characterized in that overlap the other sealing elements (16) in an inserted into the opening (2) of the sample container (3) insertion position at least partially.

29. Closure device (1) according to one of the preceding claims, characterized in that the first sealing elements (12) are formed by flap-shaped components (41).

30. Closure device (1) according to claim 29, characterized in that the flap-shaped components (41) have a curved longitudinal course when viewed in the vertical direction on the longitudinal axis (5) and the longitudinal extent in the region of the head part (10). closer lying position approximately parallel to the longitudinal axis (5).

31. Closure device (1) according to one of the preceding claims, characterized in that the head part (10) has a disc-shaped and perpendicular to the longitudinal axis (5) aligned base part (21) and the base part (21) on the of the shaft part ( 6) facing away from protruding tubular edge portion (22).

32. Closure device (1) according to claim 31, characterized in that in the base part (21) in the region of the longitudinal axis (5) and centrally to this a recess (23) is arranged net.

33. Closure device (1) according to claim 32, characterized in that the recess (23), viewed in the direction of the longitudinal axis (5), extends at least in regions into the shaft part (6).

34. Closure device (1) according to one of claims 31 to 33, characterized in that on the base part (21) a tubular support member (24) is arranged, whose central axis (25) is aligned with the longitudinal axis (5) of the base part (21) ,

35. Closure device (1) according to claim 34, characterized in that the tubular support part (24) is arranged in the peripheral region of the recess (23).

36. Closure device (1) according to claim 34 or 35, characterized in that the tubular support member (24) has a clear cross section which corresponds approximately to that clear cross section of the recess (23) in the base part (21).

37. A closure device (1) according to any one of claims 34 to 36, characterized in that the tubular support member (24) at least partially on one of the longitudinal axis (5) facing inner surface is bounded by an approximately cylindrically shaped first centering surface (26) and the central axis (25) of the first centering surface (26) is aligned parallel to and aligned with the longitudinal axis (5).

38. A closure device (1) according to any one of claims 32 to 37, characterized in that the recess (23) by an approximately cylindrically shaped further centering surface (27) is limited and the central axis (25) of the further centering surface (27) parallel to the longitudinal axis (5) is aligned.

39. Closure device (1) according to one of claims 31 to 38, characterized in that ribs (28) are arranged on the base part (21) on the side facing away from the shaft part (6).

40. Closure device (1) according to claim 39, characterized in that the ribs (28) passing between the mutually facing sides of the tubular edge part

(22) and the tubular support member (24) are arranged.

41. Closure device (1) according to one of claims 31 to 40, characterized in that a height (29) of the edge part (22) in the direction of the longitudinal axis (5) from a selected area with a lower limit of 8%, preferably 10%, in particular 12%, preferably of 18% and with an upper limit of 100%, preferably 50%, in particular 30%, preferably 25% of an outer cross-sectional dimension (30) of the head part (10) in a direction perpendicular to the longitudinal axis (5 ) aligned level corresponds.

42. A closure device (1) according to one of the preceding claims, characterized in that the shaft part (6) in the end portion (8) facing away from the head part (10) is formed approximately level with the first sealing elements (12) arranged on the shaft part (6) is.

43. Closure device (1) according to one of claims 1 to 41, characterized in that the shaft part (6) has an end in the end region (8) facing away from the head part (10), which, viewed in axial section with respect to the longitudinal axis (5 ) is convexly curved or spherical or conical.

44. Closure device (1) according to one of the preceding claims, characterized in that the shaft part (6) projects beyond the first sealing elements (12) to the side facing away from the head part (10).