Closure for a medical drinking vessel having an enteral nutritional composition

Abstract

The invention relates to a closure (1) for a medical drinking vessel having an enteral nutritional composition, comprising a lower part (100) and an upper part (200) placed on the lower part (100). The upper part (200) comprises a flange (210) and a threaded cap (220) which is arranged on the flange (210) and is connected to the flange (210) via a break-off zone (2). The lower part (100) comprises a thread (113) for connection to the threaded cap (220), a base (110) arranged below the thread (113) and a mouthpiece (102) arranged above the thread (113). The flange (210) of the upper part (200) is latched onto the base (110) of the lower part (100).

Description

[0001] Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0002] Closure for a medical drinking container with an enteral nutrition composition

[0003] Description

[0004] Field of invention

[0005] The invention relates to a closure for a medical container with an enteral nutrition composition, i.e., a liquid nutrition product (sip feeding). The invention further relates to a medical drinking container provided with the closure.

[0006] Background of the invention

[0007] The disclosure document WO 2006 / 005391 Al (Fresenius Kabi Deutschland GmbH) shows a port for a medical container, which is used in particular for a parenteral nutrition composition for so-called tube feeding.

[0008] The port includes a snap-off cap and a threaded connection for a transfer set. The transfer set includes a spike that can be used to pierce a sealing element of the port to establish a fluid connection.

[0009] The port further comprises a lower part that can be sealed into the medical container, which is in particular designed as a foil pouch. A top part, which includes the snap-off cap, is snapped onto the lower part. The sealing element is pressed between the lower and top parts of the port. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0010] Due to a flange-like connecting section of the upper part, which includes an inner and an outer wall in sections, the upper part of the port is securely locked onto the lower part, preventing tampering. This connection can withstand high tensile forces, and it is generally impossible to separate the upper part of the port from the lower part without causing damage.

[0011] The port can only be used in conjunction with a transfer set for parenteral nutrition formulations ("tube feeding"). Besides the sealing element, which must be pierced, the snap-off cap is solely for sterile sealing and as a tamper-evident seal.

[0012] Document EP 3305685 Al shows a container equipped with a spout. A closure is attached to the spout. The closure is secured to the spout by twisting it onto the spout. The closure comprises a cap and a tear ring located on the underside of the cap. The tear ring serves only as a tamper-evident seal. When opened, the tear ring breaks to indicate that the closure has been opened.

[0013] Object of the invention

[0014] In contrast to the aforementioned prior art, the invention is based on the objective of providing a resealable connection for a medical drinking container (sip feeding) which is designed to be tamper-proof and at the same time enables convenient and safe opening and closing for enteral use.

[0015] Summary of the invention Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0016] The object of the invention is already achieved by a closure for a medical drinking container with an enteral nutrition composition according to claim 1 and by a medical drinking container equipped with the closure.

[0017] Preferred embodiments and further developments of the invention can be found in the subject matter of the dependent claims, the description and the drawings.

[0018] The invention relates to a closure for a medical drinking container with an enteral nutrition composition, comprising a lower part and an upper part placed on the lower part, wherein the upper part comprises a flange and a threaded cap arranged on the flange, which is connected to the flange via a predetermined breaking point, wherein the lower part comprises a thread for connection with the threaded cap as well as a base arranged below the thread and a mouthpiece arranged above the thread, wherein the flange of the upper part is snapped onto the base of the lower part.

[0019] The closure is therefore designed as at least two-part, preferably exactly two-part, consisting of a lower and an upper part. "Upper" and "lower" within the meaning of the invention are defined by the part of the closure containing the mouthpiece being defined as being located at the top. These classifications serve only to define the components within the meaning of the invention. It is understood that when using the medical drinking container, the mouthpiece is inserted into the mouth according to the user's preference and is not necessarily oriented upwards. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0020] As in the previously mentioned prior art, the upper part includes a flange for connection to the lower part. The flange serves to provide a mechanical connection between the upper part and the lower part.

[0021] In particular, the flange can include an upper inwardly projecting collar which partially surrounds the lower part radially inwards.

[0022] The flange has a top surface that is aligned transversely, and in particular perpendicularly, to a central axis of the closure.

[0023] In accordance with the invention, the flange can also be described or defined as a cap with a through-hole for the lower part, which is snapped onto a base of the lower part.

[0024] Due to this design of the flange, a tamper-proof and stable connection between the lower and upper parts can be provided.

[0025] The flange has a top surface and a side wall extending downwards from the top surface. In one embodiment, the side wall is formed by lateral flattening and rounded sections, which are arranged alternately. The lateral flattening forms the sides of the flange, and the rounded sections form the corners of the flange.

[0026] In one embodiment of the invention, the flange preferably serves exclusively for the mechanical connection of the upper and lower parts. In particular, the flange itself does not create a fluid-tight connection between the upper and lower parts.

[0027] Lower section provided. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0028] The flange is connected to the threaded cap via a predetermined breaking point. This breaking point serves as a tamper-evident seal. The breaking point can, in particular, consist of ridges between the flange and the threaded cap, which break off when the threaded cap is first unscrewed. These ridges preferably extend from the upper surface of the flange, which runs perpendicular to the central axis of the closure. The flange of the upper part remains firmly mounted on the lower part.

[0029] The lower part comprises a thread for connection to the threaded cap, a base arranged below the thread, and a nozzle arranged above the thread. The base is designed to lock the flange of the upper part into place.

[0030] In one embodiment, the threaded cap includes a directional marking on its upper side, which, for example, indicates the direction of rotation for opening and / or closing the closure.

[0031] The mouthpiece is preferably designed as a tubular, in particular a circular cylindrical, tubular section. Preferably, the mouthpiece has smooth walls, at least on the outer wall.

[0032] Due to the placement of the predetermined breaking point between the threaded cap and the flange, the threaded cap can be easily unscrewed. At the same time, this ensures a compact design, especially when the thread of the threaded cap is directly adjacent to the predetermined breaking point.

[0033] In one embodiment of the invention, the flange comprises an inwardly projecting collar that engages a collar of the base, wherein the predetermined breaking zone is arranged between the inwardly projecting collar of the flange and the threaded cap (according to Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO).

[0034] The predetermined breaking point extends in particular from the top of the flange, which is designed as a cap.

[0035] In one embodiment of the invention, the flange comprises a further inwardly projecting collar with which the flange is locked under the collar of the base.

[0036] In this embodiment of the invention, the radially outwardly extending collar of the base is encompassed by an upper collar and a lower collar of the flange. This provides a tamper-proof design that withstands high tensile forces.

[0037] According to one embodiment of the invention, the side wall of the flange is at least partially double-walled.

[0038] According to a preferred embodiment of the invention, the flange of the upper part is secured against rotation relative to the lower part.

[0039] Anti-rotation protection is preferably provided by corresponding positive locking elements between the flange and the base.

[0040] At least one positive locking element can extend axially upwards from a lower part of the base, with the flange being snapped onto an upper part of the base.

[0041] According to one embodiment of the invention, it is particularly provided that the flange comprises two opposing positive locking elements. The flange can be used for Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0042] The interaction with the form-fitting elements of the base includes two recesses.

[0043] The positive locking elements preferably end below the collar of the base on which the flange snaps into place.

[0044] For locking, the upper collar of the flange, which grips over the base of the lower part, the collar underneath for locking, and / or the collar of the base on which the upper part is locked, can be designed as an uninterrupted circumferential and, in particular, radially inwardly or outwardly projecting web.

[0045] In a further development of the invention, the base comprises a base lower part and a base upper part, wherein the flange of the upper part is snapped onto the base upper part.

[0046] The flange sits on the base, particularly with its lower end face.

[0047] In particular, the flange is sealed by the base, which ensures tamper protection, as any access between the flange and the base is blocked.

[0048] In one embodiment, the base comprises an upper ring surface and a lower ring surface, which are preferably arranged parallel to each other. The upper ring surface and the lower ring surface are arranged one above the other and also spaced apart from each other. This creates a gap between the upper ring surface and the lower ring surface. The arrangement thus formed can serve to grip and / or guide the base.

[0049] In one embodiment, the two opposing lateral flattenings of the flange are aligned, which run along the Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0050] The weld seam extends with the two lateral flattenings of the upper ring surface and / or the round sections of the flange align with the round sections of the upper ring surface.

[0051] In a further development of the invention, the threaded cap for forming a seal comprises a collar that engages in the mouthpiece and seals against an inner wall of the mouthpiece. In this way, the entire upper part of the closure, including the threaded cap, can be formed as a one-piece injection-molded plastic part, thus eliminating the need for an additional sealing element.

[0052] The seal provided by the collar that engages the mouthpiece may, in particular, be the only seal of the closure.

[0053] The thread of the lower part and the thread of the threaded cap are preferably double-start. In particular, the thread of the lower part and / or the thread of the threaded cap can have 0.5 to 2, preferably 0.5 to 1, thread turns. The pitch of the thread in one embodiment of the invention is between 1 and 4 mm, preferably between 1.5 and 2.5 mm.

[0054] The threaded tooth can have a height of 0.5 to 1.5 mm.

[0055] In a further development of the invention, at least the thread of the lower part comprises a sawtooth-shaped profile, wherein the threaded cap can be or is lockable onto the thread of the lower part.

[0056] In this embodiment of the invention, during the manufacture of the closure, particularly during the filling of the medical container, the upper part can be pressed onto the lower part (Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO). The flange of the upper part then locks onto the base. In particular, the thread(s) of the threaded cap can also lock due to the sawtooth profile, without the need to rotate the upper part during assembly.

[0057] According to one embodiment, the threaded cap comprises a wing handle, in particular with two radially outward extending and opposing wings. The wings preferably project downwards, at least partially. This allows for a compact design.

[0058] In a first embodiment of the invention, the threaded cap below the wing handle comprises an outwardly projecting collar. The collar is arranged, in particular, between the thread of the threaded cap and the mouthpiece.

[0059] The collar can facilitate gripping the wing handle, as it acts as a stop when grasping. Furthermore, the medical container equipped with the connection can be attached to the collar of the handle.

[0060] In a second embodiment of the invention, the threaded cap does not include an outwardly projecting collar. This reduces the stiffness. The threaded cap can be more easily engaged with its (inner) thread over the (outer) thread on the

[0061] Slide the lower part.

[0062] In one embodiment of the invention, the mouthpiece has a height of 5 to 20 mm, preferably 8 to 12 mm, and / or an outer diameter of 8 to 20 mm, preferably 10 to 15 mm. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0063] It has been shown that this dimension makes drinking the enteral nutrition composition particularly easy.

[0064] For connection to the medical container, the lower part, according to one embodiment, includes a welded-in section that connects to the base below. The welded-in section can, in particular, be boat-shaped.

[0065] In the case of a medical container, especially a foil bag, the sealing section can be located in a weld seam which, adjacent to the sealing section, also connects the two walls, especially the foils, of the medical container.

[0066] The invention further relates to a medical drinking container with an enteral nutrition composition, which includes the closure described above.

[0067] The medical container is preferably designed as a collapsible container, in particular as a foil bag.

[0068] The nutritional composition preferably includes glucose, proteins, and lipids. Furthermore, the enteral nutritional composition may include vitamins and minerals.

[0069] Brief description of the drawings

[0070] The subject matter of the invention will be explained in more detail below with reference to Figures 1 to 12 and a first exemplary embodiment. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0071] Fig. 1 is an isometric view of a first embodiment of a closure according to the invention for a medical container.

[0072] Fig. 2 is a side view of the closure from Fig. 1.

[0073] Fig. 3 is a side view of the narrow side of the closure from Fig. 1.

[0074] Fig. 4 is a top view of the closure from Fig. 1.

[0075] Fig. 5 is a central longitudinal section of the closure from Fig. 1.

[0076] Fig. 6 is a detailed view of area A of Fig. 5.

[0077] Fig. 7 is an isometric view of the lower part from Fig. 1.

[0078] Fig. 8 is a central longitudinal section of the lower part from Fig. 1.

[0079] Fig. 9 is an isometric view of the upper part from Fig. 1.

[0080] Fig. 10 is a central longitudinal section of the upper part from Fig. 1.

[0081] Fig. 11 is a perspective view of the upper part from Fig. 1.

[0082] Fig. 12 schematically shows a medical container with the closure from Fig. 1. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0083] The subject matter of the invention will be explained in more detail below with reference to the drawings Fig. 13 to Fig. 24a and also with reference to a second exemplary embodiment.

[0084] Fig. 13 is an isometric view of a second embodiment of a closure according to the invention for a medical container.

[0085] Fig. 14 is a side view of the closure from Fig. 13.

[0086] Fig. 15 is a side view of the narrow side of the closure from Fig. 13.

[0087] Fig. 16 is a top view of the closure from Fig. 13.

[0088] Fig. 17 is a central longitudinal section of the closure from Fig. 13.

[0089] Fig. 18 is a detailed view of area A of Fig. 17.

[0090] Fig. 19 is an isometric view of the lower part from Fig. 13.

[0091] Fig. 20 is a central longitudinal section of the lower part from Fig. 13.

[0092] Fig. 21 is an isometric view of the upper part from Fig. 1.

[0093] Fig. 22 is a central longitudinal section of the upper part from Fig. 13. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0094] Fig. 23 is a perspective view of the upper part made of

[0095] Fig. 13 .

[0096] Fig. 24 schematically shows a medical container with the closure from Fig. 13.

[0097] Fig. 24a shows the area of ​​the closure from Fig. 24 with a transparently shown weld seam.

[0098] Detailed description of the drawings

[0099] Fig. 1 is an isometric view of an exemplary embodiment of a closure 1 according to the invention for a medical container 10.

[0100] The closure 1 comprises a lower part 100, which includes a base 110 and a weld-in section 101 arranged below the base.

[0101] The upper part 200 of the closure 1 is snapped onto the base 110.

[0102] For mechanical connection with the lower part 100, the upper part 200 includes a flange 210 which is snapped onto the lower part 100.

[0103] A threaded cap 220 is arranged on the flange 210. The threaded cap 220 is designed as a wing cap with two opposing wings 221.

[0104] Below the wings 221, in this configuration, there is an outwardly projecting collar 222. The collar 222 serves to hold the medical container 10 and as a stop for the Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0105] Gripping and thus also facilitating the removal of the threaded cap 220 .

[0106] The threaded cap 220 is connected to the flange 210 via a predetermined breaking point 2.

[0107] The predetermined breaking zone 2 is located between the top of the flange 210 and the lower end face of the threaded cap 220.

[0108] As shown in the side view according to Fig. 2, the predetermined breaking zone 2 is formed by webs 202 extending from top to bottom, in particular axially, between the threaded cap 220 and the flange 210.

[0109] In side view, the flange 210 initially comprises an essentially cylindrical section, to which a dome-shaped section is attached upwards.

[0110] The flange 210 has a larger outer diameter than the threaded cap 220 in the area adjacent to the predetermined breaking zone 2. Therefore, in a top view, the flange 210 has a larger cross-section than the threaded cap 220 in this area.

[0111] The flange 210 sits on a lower part 111 of the base 110, which thus closes or covers the flange 210 from below and protects the connection 1 against tampering.

[0112] In this embodiment, the webs 202 are designed such that they taper towards the flange 210. Therefore, when the threaded cap 220 is unscrewed, the webs 202 preferably break off adjacent to the flange 210.

[0113] The welded-in section 101 of Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO, located under the base 110, in particular under the lower part 111 of the base 110.

[0114] The lower part 100 can include ribs that seal the

[0115] Improving sealing in a medical container.

[0116] Fig. 3 is a side view of the closure 1 on its narrow side.

[0117] In the side view, the flange 210 of the upper part 200 is approximately flush with the base lower part 111. This base lower part comprises an upper ring surface I l la, a lower ring surface 111b and connecting webs 111c arranged between them.

[0118] Fig. 4 is a top view of the closure 1 from above.

[0119] In the unopened state, the wings 221 of the threaded cap 220 are aligned according to the ship-shaped welded section 101.

[0120] The threaded cap 220 includes a directional marking 223 on its upper side, which, for example, indicates the direction of rotation for opening the closure 1.

[0121] In a top view, the flange 210 of the upper part 200 is essentially circular, but includes flattened sections 211 on its sides, particularly on four sides, which facilitate the gripping of the closure 1 on the flange 210. The flattened sections 211 are preferably straight segments. The corners of the flange 210 are formed by rounded segments 211a, preferably circular segments.

[0122] Fig. 5 is a central longitudinal section of the closure 1 along its long side, with respect to the weld-in section 101.

[0123] The base 110 of the lower part 100 comprises a base lower part 111 and a base upper part 112. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0124] This design creates a step between the base lower part 111 and the base upper part 112, on which the flange 210 sits and thus cannot be gripped from below.

[0125] The threaded cap 220 and the lower part 100 each comprise a thread 203, 113 for connecting the threaded cap 220 to or with the lower part 100, which is arranged below the mouthpiece 102 of the lower part 100, in particular below the radially outwardly projecting collar 222 of the threaded cap 220.

[0126] The threaded cap 220 comprises an axially inwardly extending annular collar 224 for sealing connection with the mouthpiece 102, which rests sealingly against the inner wall of the mouthpiece 102.

[0127] To improve the sealing effect, the collar 224 can be conical, at least in sections.

[0128] Fig. 6 is a detailed view of area A of Fig. 5.

[0129] This detailed view shows that the housing of the flange 210 is partially double-walled. In particular, the housing of the flange 210 is double-walled below the upper inwardly projecting collar 218.

[0130] The upper, inwardly projecting collar 218 of the flange 210 sits on the upper collar 115 of the lower part 100.

[0131] In this embodiment, the upper end face of the upper collar 115 runs obliquely, in particular at an angle of 30 to 60°, to the central axis of the closure 1. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0132] The upper collar 115 of the base 110 of the lower part 100 serves to lock the upper part 200. Due to the obliquely oriented upper end face of the collar 115, the upper part 200 can be locked into place. In doing so, the upper part 200, in particular the collar 213 of the upper part 200, expands until the collar 213 of the upper part 200 locks under the collar 115 of the lower part 100. The lower end face of the collar 115 preferably extends approximately perpendicular to the central axis of the fastener 1.

[0133] The upper surface 212 of the flange 210 initially runs obliquely, in particular dome-shaped, and then transitions into a section extending transversely, preferably perpendicularly, to the central axis, at the end of which the webs 202, which form the predetermined breaking zone 2, are arranged.

[0134] The flange 210 thus forms a cap with a through-hole for the lower part 100, in particular a cap for the base 210 of the lower part 200. The nozzle 102 and preferably also the thread 113 of the upper part of the base 112 extend through the through-hole in the flange 210.

[0135] In this embodiment, the top surface 118 of the base 110 is flush with the top surface 212 of the flange 210.

[0136] Below the inwardly projecting collar 218, the flange 210 encompasses the inwardly projecting collar 213, which snaps into place under the upper collar 115 of the base 110.

[0137] The upper collar 115 of the base 110 is thus enclosed by the inwardly projecting collar 218 of the flange 210 and the collar 213 of the flange 210 for locking. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0138] Sectionally, the flange 210 is formed by an inner ring 214 and an outer ring 216, whereby the side wall of the flange 210 is at least partially double-walled.

[0139] The outer ring 216, which sits on the base 111, protects the inner ring 214, which serves for locking, in particular from manipulation.

[0140] The inner ring 214 can include a bevel 215 extending from the front face, which facilitates the snapping of the upper part 200 onto the lower part 100.

[0141] Furthermore, in this embodiment, the base 110 is provided below the upper collar 115 with a lower collar 116, which projects outwards and preferably abuts the inner ring 214 of the flange 210. This improves the stability of the closure; in particular, the inner wall of the flange 210 is supported when the flange 210 is compressed, which improves tamper resistance.

[0142] The upper part of the base 112 transitions via a step 114 into the mouthpiece 102 with its thread 113. The step 114 thus reduces the diameter of the lower part 100 towards the mouthpiece 102.

[0143] The thread 113 of the lower part 100 is sawtooth shaped. The upper tooth flank is inclined, but not perpendicular to the central axis of the closure 1, in particular at an angle of 30° to 60°.

[0144] The thread 204 of the threaded cap 220 has a corresponding shape, i.e., it is provided with an inclined tooth flank on the underside. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0145] The tooth flank of the thread 204 of the threaded cap 220 is preferably oriented substantially perpendicular to the central axis of the closure 1 at the top, wherein the tooth flank of the thread 113 is oriented substantially perpendicular to the central axis of the closure 1 at the bottom.

[0146] The threaded cap 220 can be pressed into place during assembly. The thread 204 of the threaded cap 220 widens when pressed into place. In particular, it can then engage under the thread 113 of the lower part 100.

[0147] Fig. 7 is a perspective view of the lower part 100.

[0148] The lower part 100 comprises the welded-in section 101, above which the base lower part 111 is arranged.

[0149] The base section 111 comprises an upper ring surface I l la and a lower ring surface 111b. The upper ring surface I l la is a type of terrace that extends around the central fluid channel. The lower ring surface 111b is also a type of terrace that extends around the central fluid channel.

[0150] The upper ring surface I l la and the lower ring surface 111b are arranged one above the other and spaced apart from each other. The base part 111 also includes, in particular, connecting webs 111c, which are arranged between the upper ring surface I l la and the lower ring surface 111b.

[0151] A gap is formed between the upper ring surface I l la and the lower ring surface 111b. The arrangement thus formed can serve to grip and / or guide the lower part 100, e.g., in a transport system. The lower part 100 can thus be guided, for example, to the welding station. A container 10 welded to this lower part 100 can, for example, be gripped and transported over it.

[0152] The upper ring surface Illa and the lower ring surface 111b are each formed by two round, preferably circular, sections and two flattenings, preferably straight sections.

[0153] The upper base part 112, which has a smaller diameter than the lower base part 111, includes the lower collar 116 and the upper collar 115, which serves to snap the upper part 200 into place.

[0154] The thread 113 is arranged between the nozzle 102 and the upper base 112. Positive locking elements 117, extending radially from the upper base 112 and projecting axially upwards from the lower base 111, are located on the lower base 111.

[0155] Fig. 8 is a longitudinal section of the lower part 100 along its narrow side.

[0156] The positive locking elements 117 are located on the base lower part 111, interrupting the lower collar 116 of the base upper part 112. The positive locking elements 117 are located on the upper ring surface Illa.

[0157] On the inside, the base part 111 has a step 104 where the inner diameter tapers upwards.

[0158] Next comes the upper collar 115, which is preferably uninterrupted around its circumference. Above the upper collar 115, the inner diameter of the lower part 100 tapers again over the step 114. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0159] Then follows the thread 113 and the mouthpiece 102 .

[0160] At the upper end of the mouthpiece 102, the inner wall of the mouthpiece 102 is provided with a bevel extending from its end face. This forms an internal conical section 103. This improves the sealing effect of the collar 224 of the threaded cap 220, which projects into the mouthpiece 102.

[0161] Fig. 9 is an isometric view of the upper part 200. The upper part 200 comprises the flange 210 and the threaded cap 220 arranged on the flange 210, the threaded cap 220 being connected to the flange 210 via the predetermined breaking zone 2.

[0162] The flange 210 forms a kind of cap or cover for the base 210 of the lower part 200. The cap has a through hole or opening in the center through which at least the mouthpiece 102 and the thread 113 of the lower part 100 extend when assembled.

[0163] In its external view, the flange 210 has a flat, radially extending top surface 212 and a side wall extending downwards from the top surface 212, particularly axially. The side wall is formed by the lateral flattenings 211 and the rounded sections 211a. In detail, four lateral flattenings 211 and four rounded sections 211a are arranged alternately. The four lateral flattenings 211a form the (outer) sides of the flange 210. The four rounded sections 211b form the (outer) corners of the flange 210.

[0164] The two opposing lateral flattenings 211 of the flange 210, which, in the assembled state, extend along the weld seam 11, are aligned with the two lateral flattenings of the upper annular surface I l la and / or the lower Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0165] Ring surface 111b . The round sections 211a of the flange 210 are aligned with the round sections of the upper ring surface 211a and / or the lower ring surface 111b .

[0166] The flange 210 includes the lateral flattenings 211a, which serve to improve grip. These lateral flattenings 211a are only present on the outer wall of the flange 210. Inside, particularly in the area of ​​the collar 213 for locking the upper part 200, the flange 210 is preferably cylindrically shaped (see also Figure 11).

[0167] The threaded cap 220 sits on the top of the dome-shaped section of the base 210 .

[0168] Fig. 10 is a longitudinal section of the upper part 200.

[0169] The threaded cap 220 includes the collar 224, which projects inwards into the mouthpiece 102 for sealing. The collar 224 has an outer side wall that is inclined to the central axis. This improves the sealing effect.

[0170] The thread 203 is designed here as a double start with a preferably sawtooth-shaped profile.

[0171] Between the wings 221 and the thread 203 is the outwardly projecting collar 222, on which the fastener 1 can be gripped.

[0172] Below the collar 213, which serves to lock onto the lower part 100 and is arranged on the inner ring 214 of the base 210, are indentations 217, which serve as a positive locking element for interaction with the positive locking elements 117 of the lower part 100.

[0173] In particular, the indentations 217 in the upper part 200 and the positive locking elements 117 in the lower part 100 act as Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0174] Anti-rotation device between the upper part 200 and the lower part

[0175] 100. They also support a defined placement of the upper part 200 from the lower part 100.

[0176] As shown in the perspective view according to Fig. 11, the indentations 217 extend to the outer ring 216. The inner ring 214 is connected to the outer ring 216 via webs 219 that define the indentation 217. This increases the stiffness of the flange 210 when compressed and thus increases its tamper resistance.

[0177] Due to the increased stiffness of the form-locking element thus formed, the resistance to torsional forces between the upper part 200 and the lower part 100 is also increased.

[0178] Fig. 12 schematically shows a medical container which is equipped with a closure 1 according to the invention.

[0179] The medical container is designed here as a foil bag 10 with edge weld seams 11.

[0180] The weld-in section 101 of the closure 1 is welded into a weld seam 11. In this embodiment, this weld seam 11 runs diagonally opposite the other weld seams. The otherwise rectangular shape of the film bag 10 is cut out at the corner where the closure 1 is located, so that the closure 1 is positioned in this area. This allows the film bags 10 to be stacked or packaged compactly, since the closure 1 does not protrude from the rectangular contour.

[0181] In a first embodiment, the bag 10 can be manufactured in a first step. The lower part 100 (Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO) of the closure 1 is welded into the weld seam 11 of the bag 10 via its weld-in section 101. The bag 10 is then filled with an EN liquid through the opening of the lower part 100. After filling, the lower part 100 is closed by pressing the upper part 200 onto the lower part 100. The bag 10 is now fluid-tight. In a subsequent step, the now closed bag 10 can be sterilized, for example, by autoclaving.

[0182] To use the container 10, the user unscrews the threaded cap 220. The connecting tabs 202 break off. The user drinks from the container 10 via the mouthpiece 102. After drinking, the threaded cap 220 can be screwed back onto the base 100 to close the container 10. The container 10 is therefore designed to be resealable.

[0183] In the first embodiment shown above, the upper section of the threaded cap 220 extends over the collar 222 into the lower section of the threaded cap 222, in which the thread 203 is arranged (see, for example, Fig. 5).

[0184] Figures 13 to 24a illustrate a second embodiment of a closure 1 according to the invention for a medical container 10. This second embodiment differs from the first embodiment in that the collar 222 is removed from the upper part 200 of the closure 1.

[0185] The threaded cap 220 has no collar on its outer surface. The upper section of the threaded cap 220 transitions, in particular via a step 220a, into a lower section in which the thread 203 is arranged. This reduces the stiffness in the upper part 200, i.e., in the threaded cap 220. The threaded cap 220 can therefore expand when the upper part 200 is placed, in particular when it is impacted, onto the Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0186] The lower part 100 can be more easily deformed, in particular expanded. The thread of the thread 203 of the upper part 200 can slide more easily and in particular without damage over the thread of the thread 113 of the lower part.

[0187] Figures 13 to 24a show the second embodiment of the closure. These figures differ from Figures 1 to 12 only in that the outer surface of the threaded cap 220 now features not a collar 222, but merely a step 220a. Therefore, for the description of Figures 13 to 24a, reference is made to the descriptions of the preceding Figures 1 to 12.

[0188] Figures 13 to 18 correspond to Figures 1 to 6. Figures 19 and 20 are identical to Figures 7 and 8. Figures 21 to 23 correspond to Figures 9 to 11. Figure 24 is essentially the same as Figure 12, except that a narrower bag format is shown in Figure 24. Figure 24a illustrates a detailed view of the area of ​​connection 1 from Figure 24. The area is shown here with a "transparent" weld 11, so that the details of the welded section 107 with the ribs are visible.

[0189] The invention provides a simple and easy-to-use, yet very secure closure for a medical container with an enteral nutrition composition, especially for sip feeding.

[0190] Reference character list

[0191] Closure

[0192] 2 Breakaway zone

[0193] 10 medical containers / foil bags Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0194] II weld

[0195] 100 lower part

[0196] 101 Welding section

[0197] 102 Mouthpiece

[0198] 103 conical section

[0199] Level 104

[0200] 110 sockets

[0201] III Base section

[0202] Illa Upper ring surface

[0203] 111b Lower ring surface

[0204] 111c Connecting bridge

[0205] 112 Base top

[0206] 113 threads

[0207] Level 114

[0208] 115 upper collar

[0209] 116 lower collar

[0210] 117 Positive locking element

[0211] 118 Top of the base 110

[0212] 200 top

[0213] 202 Connecting bridge (weakening zone)

[0214] 203 threads

[0215] 210 flange

[0216] 211 Flattening (or side)

[0217] 211a Round section (or corner)

[0218] 212 Top

[0219] 213 Collar (for snapping onto lower part)

[0220] 214 inner ring

[0221] 215 Slopes

[0222] 216 outer ring

[0223] 217 Indentation (for positive locking element of the lower part)

[0224] 218 Inward-projecting collar (sits on the base)

[0225] 219 Steg

[0226] 220 threaded cap

[0227] 220a stage

[0228] 221 Wing Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO

[0229] 222 outwardly projecting collar of the threaded cap

[0230] 223 Directional marking

[0231] 224 Collar (seal)

Claims

1. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO Claims:

1. Closure (1) for a medical drinking container with an enteral nutrition composition, comprising a lower part (100) and a top part (200) placed on the lower part (100), wherein the top part (200) comprises a flange (210) and a threaded cap (220) arranged on the flange (210) which is connected to the flange (210) via a predetermined breaking zone (2), wherein the lower part (100) comprises a thread (113) for connection with the threaded cap (220) as well as a base (110) arranged below the thread (113) and a mouthpiece (102) arranged above the thread (113), wherein the flange (210) of the upper part (200) is snapped onto the base (110) of the lower part (100).

2. Closure (1) according to the preceding claim, characterized in that the flange (210) has an inwardly projecting collar (218) which engages over a collar (115) of the base (110), wherein the predetermined breaking zone (2) is arranged between the inwardly projecting collar (218) of the flange (210) and the threaded cap (220).

3. Closure (1) according to one of the preceding claims, characterized in that the flange (210) has a further inwardly projecting collar (213) with which the flange (210) is locked under the collar (115) of the base (110).

4. Closure (1) according to one of the preceding claims, characterized in that the flange (210) is provided as a cap with a through-hole for the lower part (100). 28 Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO 5. Closure (1) according to one of the preceding claims, characterized in that the flange (210) has a top surface (212) and a side wall (211, 211a) extending downwards from the top surface (212).

6. Closure (1) according to the preceding claim, characterized in that the side wall (211, 211a) is formed by lateral flattenings (211) and by round sections (211a) which are arranged alternately.

7. Closure (1) according to one of the preceding claims, characterized in that the flange (210) of the upper part (200) is secured against rotation relative to the lower part (100).

8. Closure according to one of the preceding claims, in that the base (110) comprises a base lower part (111) and a base upper part (112), wherein the flange (210) of the upper part (200) is snapped onto the base upper part (112).

9. Closure (1) according to the preceding claim, characterized in that the flange (210) of the upper part (200) sits on the base lower part (111).

10. Closure (1) according to one of the preceding claims, characterized in that a top surface (118) of the base (110) of the lower part (100) is aligned with the top surface (212) of the flange (210) of the upper part (200).

11. Closure (1) according to the preceding claim, characterized in that the base part (211) comprises an upper ring surface (211a) and a lower ring surface (211b), which are preferably arranged parallel to each other. Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO are .

12. Closure (1) according to the preceding claim, characterized in that two opposing lateral flattenings (211) of the flange (210) extending along the weld seam (11) are aligned with two lateral flattenings of the upper annular surface (Illa) and / or that round sections (211a) of the flange (210) are aligned with round sections of the upper annular surface (11a).

13. Closure (1) according to one of the preceding claims, characterized in that the predetermined breaking zone (2) is formed by connecting webs (202) between the flange (210) and the threaded cap (220), in particular wherein the connecting webs (202) extend directly from the top (212) of the flange (210).

14. Closure (1) according to one of the preceding claims, characterized in that the threaded cap (220) comprises a collar (224) to form a seal, which engages in the mouthpiece (102) and seals against an inner wall of the mouthpiece (102).

15. Closure (1) according to one of the preceding claims, characterized in that the thread (113) of the lower part (100) is designed as a double thread and preferably has 0.5 to 2, particularly preferably 0.5 to 1, thread turns and / or that the thread (113) of the lower part (199) comprises a sawtooth-shaped profile, wherein the threaded cap (220) can be snapped onto the thread (113).

16. Closure (1) according to one of the preceding claims, characterized in that the threaded cap (220) has a Fresenius Kabi Deutschland GmbH FK24102-04-PAT-WO has a wing handle, in particular wherein the threaded cap (220) below the wing handle includes an outwardly projecting collar (222).

17. Closure (1) according to one of the preceding claims, characterized in that the threaded cap (220) has a directional marking for opening and / or closing the closure (1), which is arranged in particular on a top side of the threaded cap (220).

18. Closure (1) according to one of the preceding claims, characterized in that the mouthpiece (102) has a height of 5 to 20 mm, preferably of 8 to 12 mm, and / or an outer diameter of 8 to 20 mm, preferably of 10 to 15 mm.

19. Closure (1) according to one of the preceding claims, characterized in that the lower part (100) comprises a weld-in section (101) which adjoins the base (110) below.

20. Closure (1) according to the preceding claim, characterized in that the flange (210) has at least one recess (217) into which a positive locking element (117) of the lower part (200) engages and / or that a side wall of the flange (210) is formed at least partially as a double wall.

21. Medical drinking container with an enteral nutrition composition, in particular designed as a foil bag (10) comprising a closure (1) according to one of the preceding claims.

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