Adapter for transferring components between multi-chamber cartridges

Abstract

The invention relates to an adapter (1) for transferring initial components (48, 50) from a large multi-chamber cartridge (2) into a small multi-chamber cartridge (3), wherein the multi-chamber cartridges (2, 3) have cartridge chambers (4, 5, 8, 9) and outlet openings (6, 7, 10, 11), the adapter (1) having two connecting elements (12, 14), inlet openings (16, 18) and outlet openings (20, 22), wherein the inlet openings (16, 18) are connected to the outlet openings (20, 22) within the adapter (1) liquid-transmissively by conduits (24, 26) and wherein the inlet openings (16, 18) are at a greater spatial distance from one another than the outlet openings (20, 22) and / or at least one of the inlet openings (16, 18) has a larger conduit cross-sectional area than the at least two outlet openings (20, 22) connected to it by one of the conduits (24, 26). The invention also relates to a cartridge system having such an adapter (1), a large multi-chamber cartridge (2) and a small multi-chamber cartridge (3). The invention also relates to a method for transferring at least two liquid and / or pasty initial components (48, 50) of a dental material from a large multi-chamber cartridge (2) into a small multi-chamber cartridge (3) with the aid of an adapter.

Description

[0001] .Adapter for transferring multi-chamber cartridges

[0002] Description

[0003] The invention relates to an adapter for transferring at least two liquid and / or pasty starting components from a large multi-chamber cartridge with a large volume into a small multi-chamber cartridge with a small volume. The invention also relates to a cartridge system comprising such an adapter and comprising a large multi-chamber cartridge with a large volume and a small multi-chamber cartridge with a small volume, as well as to a method for transferring at least two starting components of a dental material from a large multi-chamber cartridge with a large volume into a small multi-chamber cartridge with a small volume.

[0004] Dental impression materials, for example based on condensation-curing or addition-curing setting mechanisms, are mixed from two pasty masses as starting components. This invention relates to those impression materials that are applied from so-called automix systems. Two components (base and catalyst, or base and activator paste) are filled into cartridge chambers of a multi-chamber cartridge or two-chamber cartridge, pressed out of the multi-chamber cartridge immediately before use, passed through a mixing element and mixed. For tray materials, larger multi-chamber cartridges with a filling volume of around 380 ml are used, often in a mixing ratio of 5:1. For thin-flowing starting components, starting components from 50 ml multi-chamber cartridges are often applied, predominantly in a 1:1 mixing ratio, and are then homogeneously mixed using an attached static mixer.A so-called IOT (intraoral tip) is often attached to the attached static mixer to precisely inject the impression area. Combined with a mixing gun as an ejection device (other common names include dispenser or dispensing gun), this results in an overall system of considerable dimensions and weight, which impedes precise placement of the impression materials at the desired location in the mouth.

[0005] Modern dental materials such as dental impression materials are also predominantly offered in multi-chamber cartridges, particularly in dual-chamber cartridges, which are mechanically or electrically dispensed and mixed using a dispensing device. US Pat. No. 5,401,169 A discloses a dual-chamber cartridge with a static mixer for dispensing dental material. A static mixer for such cartridge systems is also known from EP 3 342 478 A1. Electric dispensing devices primarily mix and dispense material from larger cartridges with, for example, a total capacity of 350 ml to 400 ml and are used in stationary applications. These are primarily used to fill dental impression trays. The mixer can also be electrically driven. Such systems are known, for example, from US 2009 / 279382 A1, US 2009 / 101673 A1, US 2010 / 0143864 A1, US 2013 / 270302 A1, US 2015 / 157429 A1 and DE 20 2006 006 147 U1.Such dispensing devices can have a base or a wall mount. Dental impression materials supplied by such dispensing devices are used to fill dental impression trays, which are used to take impressions in the patient's mouth. Dispensing devices can also be equipped with a mixer, which can also be electrically driven.

[0006] For the direct application of dental impression materials in the patient's mouth, for example, in the correction and double-mixing technique, smaller dual-chamber cartridges with two cartridge chambers and a capacity of 5 ml to 100 ml have become established. A dispensing device for cartridge systems with such small volumes is known, for example, from US 2018 / 0250103 A1. The preferred size is a dual-chamber cartridge with a total volume of 50 ml. The dental impression material is placed in a dispensing device, also called a "dispensing gun," and mechanically conveyed via a rack and pinion actuator, which acts on the dispensing pistons in the cartridge. The mixer is designed to be static.

[0007] Such multi-chamber cartridges are used for low-viscosity to high-viscosity materials (types 1 to 3 according to DIN ISO 4823:2021, publication date 2021-02).

[0008] For medium-viscosity materials (Type 2 according to DIN EN SIO 4823:2021, published June 2015), there are so-called "individual syringes" that are attached to the dynamic mixer of the electric dispensing device and filled with mixed impression material toward the outlet side. The dentist then uses this to encapsulate the tooth or implant. With some limitations in handling, this individual syringe can also be filled from 50 ml cartridges. The material in this application form must be applied very quickly in the mouth, as the impression material is already mixed and filled into this syringe, and the material can only be used for a few seconds (1 to 3 minutes) without curing.

[0009] EP 3 162 716 A1 discloses a method for filling a cartridge, in which the cartridge chamber is filled through an opening in the dispensing piston. Disadvantages of this include, among other things, that the opening in the dispensing piston is not always easily accessible and the dispensing piston is movably mounted in the cartridge chamber. In addition, air or gas inclusions can form, which are pushed ahead of the components filled into the cartridge chamber. After filling such multi-chamber cartridges, the dispensing piston plus plunger must be inserted into each of the cartridge chambers against the outlet side, which can lead to contamination of the multi-chamber cartridge. In addition, this embodiment only allows for a short storage stability of the material and the small volume precludes the treatment of several teeth.

[0010] EP 3 868 685 A1 discloses a connector for filling a cartridge chamber, which is placed over an opening on the front of the respective cartridge chamber. The cartridge chambers can be filled individually via the connector. An outlet part can then be attached through which the contents can be pressed out of the cartridge chambers and mixed if necessary. One disadvantage of this is that additional injectors are required to transfer and fill the starting components into the respective cartridge chamber. These must be filled from a larger tank.

[0011] An object of the invention is to at least partially overcome one or more disadvantages of the prior art. One of the objectives can be to keep the existing starting components from multi-chamber cartridges available as completely as possible without wasting residual quantities of the starting components. At the same time, multi-chamber cartridges should be as easy to handle as possible. A further objective of the present invention can therefore be to simplify the applicability of multi-chamber cartridges for the user. In particular, the use of a multi-chamber cartridge that is as small as possible can be useful for the user if it is to be used to cover hard-to-reach areas, such as in the oral cavity of a patient, with the material to be mixed from the at least two starting components, as is the case, for example, with dental impression materials.At the same time, large multi-chamber cartridges can be useful due to the larger filling capacity and the larger amount of material produced from them.

[0012] The object of the above invention may be to provide the dentist with a more manageable system that also allows flexibility regarding the amount to be applied. Furthermore, it may be an object to achieve time savings for the user in the treatment process and to integrate the most manageable and easy-to-use systems possible directly into the impression process at any time.

[0013] The objects of the invention are at least partially achieved by an adapter according to claim 1, by a cartridge system according to claim 10 and by a method according to claim 13. Preferred embodiments and further developments are described in subclaims 2 to 9, 11 to 12 and 13 and 14. The objects of the invention are at least partially achieved by an adapter for transferring at least two liquid and / or pasty starting components from a large multi-chamber cartridge with a large volume into a small multi-chamber cartridge with a small volume, wherein the small volume of the small multi-chamber cartridge is smaller than the large volume of the large multi-chamber cartridge, wherein the large multi-chamber cartridge has at least two first cartridge chambers and at least two first outlet openings, wherein each of the at least two first cartridge chambers is assigned one of the at least two first outlet openings,wherein the small multi-chamber cartridge has at least two second cartridge chambers and at least two second outlet openings, wherein each of the at least two second cartridge chambers is assigned one of the at least two second outlet openings, wherein the at least two first outlet openings are spatially separated from one another and the contents of the at least two first cartridge chambers can be expelled separately from one another through the at least two first outlet openings, and wherein the at least two second outlet openings are spatially separated from one another and the contents of the at least two second cartridge chambers can be expelled separately from one another through the at least two second outlet openings, the adapter having a first connecting element for connection to the large multi-chamber cartridge and having a second connecting element for connection to the small multi-chamber cartridge,the adapter having at least two inlet openings for connection to the at least two first outlet openings of the large multi-chamber cartridge and having at least two outlet openings for connection to the at least two second outlet openings of the small multi-chamber cartridge, wherein the at least two inlet openings are connected to the at least two outlet openings within the adapter by separate and distinct lines in a liquid-permeable manner, and wherein the at least two inlet openings have a greater spatial distance from one another than the at least two outlet openings and / or at least one of the at least two inlet openings has a larger line cross-sectional area than the at least two outlet openings connected to it by one of the separate and distinct lines.

[0014] In summary, the present invention relates to an adapter for transferring starting components from a large multi-chamber cartridge into a small multi-chamber cartridge, wherein the multi-chamber cartridges have cartridge chambers and outlet openings, the adapter having two connecting elements, inlet openings and outlet openings, wherein the inlet openings are connected to the outlet openings within the adapter by lines in a liquid-permeable manner and wherein the inlet openings have a greater spatial distance from one another than the outlet openings and / or at least one of the inlet openings has a larger line cross-sectional area than the at least two outlet openings connected to it by one of the lines.

[0015] The at least two liquid and / or pasty starting components are preferably intended for the production of dental materials, particularly preferably for the production of a dental impression material.

[0016] According to the invention, the small multi-chamber cartridge is preferably intended and suitable for the application of a dental material.

[0017] The large multi-chamber cartridge has a plurality of first cartridge chambers, and the small multi-chamber cartridge also has a plurality of second cartridge chambers. Preferably, the number of first cartridge chambers of the large multi-chamber cartridge is equal to the number of second cartridge chambers of the small multi-chamber cartridge.

[0018] Preferably, it can be provided that the large multi-chamber cartridge is a large two-chamber cartridge with two first cartridge chambers and with a large volume of the two first cartridge chambers and that the small multi-chamber cartridge is a small two-chamber cartridge with two second cartridge chambers and a small volume of the two second cartridge chambers.

[0019] The volume of the large multi-chamber cartridge and the small multi-chamber cartridge refers to the volume of the cartridge chambers (the first and second cartridge chambers) in which starting components for producing a dental material, in particular a dental impression material, can be or are stored and can be or are discharged from the cartridge chambers.

[0020] A conduit cross-sectional area is defined as a flat, free cross-sectional area in the opening or conduit through which a liquid or paste can flow through the respective inlet or outlet opening without any obstruction impeding the flow. The conduit cross-sectional area can be arranged perpendicular to the flow direction. Additionally or alternatively, the conduit cross-sectional area can form the smallest possible flat, free cross-sectional area possible in the opening or conduit.

[0021] The inlet openings are the openings in the adapter through which the contents of the large multi-chamber cartridge flow into the adapter when transferring from the large multi-chamber cartridge to the small multi-chamber cartridge. Accordingly, the outlet openings are the openings in the adapter through which the contents of the large multi-chamber cartridge flow out of the adapter and into the small multi-chamber cartridge when transferring from the large multi-chamber cartridge to the small multi-chamber cartridge.

[0022] It can be provided that the separate and separated lines within the adapter are spaced apart by at least 0.1 mm, preferably at least 0.5 mm, particularly preferably at least 1 mm.

[0023] It may also be provided that the separate and distinct lines within the adapter have the smallest distance at the outlet openings or in an area within a maximum distance of 2 mm from the outlet openings.

[0024] The adapter can preferably have dimensions of a maximum of 50 mm, preferably dimensions of a maximum of 20 mm.

[0025] The dimensions refer to the external geometric dimensions (length, width and depth) of the adapter in every possible direction, so that the adapter is a maximum of 50 mm, preferably a maximum of 20 mm.

[0026] It can also be provided that the separate and distinct lines have a maximum length of 55 mm, preferably a maximum length of 25 mm, and most preferably a maximum length of 10 mm. The shorter the length of the separate and distinct lines, the less material is lost when transferring from the large multi-chamber cartridge to the small multi-chamber cartridge.

[0027] In adapters according to the invention, it can be provided that at least one of the separate and separated lines has a line cross-section that continuously decreases in the direction of the at least two outlet openings, preferably all of the separate and separated lines have a line cross-section that continuously decreases in the direction of the at least two outlet openings.

[0028] In contrast to a step-like or abrupt reduction of the pipe cross-section, a continuously decreasing pipe cross-section can ensure that the flow resistance when passing through the liquids and pastes to be transferred is as low as possible, thus allowing the transfer to be carried out with the least possible expenditure of force.

[0029] Furthermore, it can be provided that at least one of the separate and distinct lines has a conical cross-section that tapers conically in the direction of the at least two outlet openings, at least in some areas, and preferably all of the separate and distinct lines have a conical cross-section that tapers conically in the direction of the at least two outlet openings, at least in some areas. This also makes it possible to ensure that the flow resistance during the passage of the liquids and pastes to be transferred is as low as possible, thus allowing the transfer to be carried out with the least possible effort.

[0030] Furthermore, it can be provided that within the adapter the spatial distance of the separate and separated lines decreases in the direction of the at least two outlet openings, in particular decreases uniformly, wherein preferably the greatest spatial distance of the separate and separated lines is present at the at least two inlet openings and the smallest spatial distance of the separate and separated lines is present at the at least two outlet openings.

[0031] This also ensures that the contents of the multi-chamber cartridges can be transferred with the lowest possible flow resistance.

[0032] It can also be provided that the first connecting element has a bayonet lock or a thread for connection to the large multi-chamber cartridge and the second connecting element has a bayonet lock or a thread for connection to the small multi-chamber cartridge, wherein preferably the bayonet lock or the thread of the first connecting element is opposite to the bayonet lock or the thread of the second connecting element.

[0033] This allows the large multi-chamber cartridge and the small multi-chamber cartridge to be connected quickly and easily using the adapter element.

[0034] Preferably, it can be provided that the bayonet lock or the thread of the first connecting element has a right-hand thread and the bayonet lock or the thread of the second connecting element has a left-hand thread or that the bayonet lock or the thread of the first connecting element has a left-hand thread and the bayonet lock or the thread of the second connecting element has a right-hand thread.

[0035] The adapter can also have two individual locking sleeves. These can then also be parallel. With a single, shared locking sleeve, a counter-rotating locking mechanism is preferably provided.

[0036] According to a preferred development, the adapter can be provided with a sealing surface or a sealing ring for each of the at least two inlet openings surrounding the respective inlet opening, and the adapter can be provided with a sealing surface or a sealing ring for each of the at least two outlet openings surrounding the respective outlet opening. The sealing surfaces or sealing rings can be used to create a tight connection between the adapter and the large and small multi-chamber cartridges, preventing the liquids or pastes from entering the cartridge.

[0037] According to the invention, the separate and distinct lines each have an inner wall, wherein the inner walls have a coating made of a second material that differs from the material in which the inner wall is formed. This allows the inner walls or the component containing the inner walls or the lines to be manufactured from a cost-effective material, while a different material can be selected for the coating that has advantageous properties for conveying the starting components or in contact with the starting components, for example, with regard to chemical resistance or wettability.

[0038] It can also be provided that the separate and distinct lines each have an inner wall, wherein the inner walls consist of a material or are coated with a material that does not chemically react with the liquid or pasty starting components of the large multi-chamber cartridge that is to be conveyed through the separate and distinct lines, and / or wherein the inner walls consist of a material or are coated with a material that is not wettable or slightly wettable (wetting angle of 90° to a maximum of 115°) by the liquid or pasty starting components of the large multi-chamber cartridge that are to be conveyed through the separate and distinct lines.

[0039] This facilitates the passage of the output components through the adapter. A different material can be used for each of the lines, which matches the output component being passed through and is not wetted by it.

[0040] Non-wetting or non-wettability occurs when the contact angle of a drop of the respective liquid starting component on a flat surface of the material from which the inner coating or the lines are made, or the central body of the adapter in which the lines are formed, is greater than 90°. The liquid on the solid surface then contracts into an almost spherical drop. The extent of wetting is quantified by the contact angle. The contact angle is the angle between the solid surface and the surface of the wetting liquid directly at the solid surface, which encloses the area filled with the wetting liquid. The extent of wetting is often quantified by the macroscopic contact angle α.This contact angle can be determined experimentally in a simple manner known to those skilled in the art, for example on supported drops using the “sessile drop” method, see Jaroslaw Drelich “Guidelines to measurements of reproducible contact angles using a sessile-drop technique”, Surface Innovations, Volume 1, No. 4, December 2013, ISSN 2050-6252, pp. 248-254.

[0041] It can therefore be provided according to the invention that the output components do not wet the separate and distinct lines.

[0042] The starting components can be based in particular on condensation-curing silicones, addition-curing silicones, or cross-curing polyethers.

[0043] The adapters are also suitable for cartridge systems with other starting components, such as acrylate-based, two-component systems, e.g. cements.

[0044] It is sufficient if the inner wall of the respective line is only chemically resistant and / or repellent to the source component that is to be passed through it.

[0045] It can further be provided that the adapter consists of one or more plastics, in particular of a chemically inert plastic and / or of a monomer liquid-repellent plastic.

[0046] The adapter can preferably be manufactured as an injection-molded part, except for seals if necessary.

[0047] Furthermore, it can be provided that the adapter has at least one passage which is impermeable to liquids but at least permeable to gas under pressure, through which excess air or gas can be forced out during transfer, wherein preferably at least one pore filter is arranged in the at least one passage and / or a pressure relief valve is arranged in or on the at least one passage.

[0048] As a result, excess air or excess gas which is compressed when transferring the starting components can escape through the at least one passage in the adapter without the starting components being able to escape through the at least one passage.

[0049] A preferred development can provide for the adapter to have a central body and at least one locking sleeve that is rotatably mounted relative to the central body. The separate and distinct lines are arranged in the central body, and the first connecting element and the second connecting element are arranged on the at least one locking sleeve. This allows the large multi-chamber cartridge and the small multi-chamber cartridge to be connected to the adapter by frictional engagement by rotating the locking sleeve.

[0050] Preferably, it can be provided that the at least one locking sleeve encloses the central body partially or completely.

[0051] It can also preferably be provided that the first connecting element is arranged on a first locking sleeve and the second connecting element is arranged on a second locking sleeve.

[0052] The objects underlying the present invention can also be at least partially achieved by a cartridge system comprising a previously described adapter, the cartridge system further comprising a large multi-chamber cartridge with a large volume and a small multi-chamber cartridge with a small volume, wherein the small volume of the small multi-chamber cartridge is smaller than the large volume of the large multi-chamber cartridge, wherein the large multi-chamber cartridge has at least two first cartridge chambers and at least two first outlet openings, wherein each of the at least two first cartridge chambers is assigned one of the at least two first outlet openings, wherein the small multi-chamber cartridge has at least two second cartridge chambers and at least two second outlet openings, wherein each of the at least two second cartridge chambers is assigned one of the at least two second outlet openings,wherein the at least two first outlet openings are spatially separated from one another and the contents of the at least two first cartridge chambers can be expelled separately from one another through the at least two first outlet openings, and wherein the at least two second outlet openings are spatially separated from one another and the contents of the at least two second cartridge chambers can be expelled separately from one another through the at least two second outlet openings, wherein the large multi-chamber cartridge is connectable to the first connecting element of the adapter in such a way that the at least two inlet openings of the adapter are connectable to the at least two first outlet openings of the large multi-chamber cartridge, and wherein the small multi-chamber cartridge is connectable to the second connecting element of the adapter in such a way,that the at least two outlet openings of the adapter can be connected to the at least two second outlet openings of the small multi-chamber cartridge, wherein preferably the large multi-chamber cartridge can be connected to the first connecting element of the adapter in such a way that the at least two inlet openings of the adapter can be connected to the at least two first outlet openings of the large multi-chamber cartridge in a fluid-conducting and fluid-tight manner, and wherein the small multi-chamber cartridge can be connected to the second connecting element of the adapter in such a way that the at least two outlet openings of the adapter can be connected to the at least two second outlet openings of the small multi-chamber cartridge in a fluid-conducting and fluid-tight manner.

[0053] Preferably, the small multi-chamber cartridge can be used in conjunction with a suitable mixer for applying a dental material.

[0054] It can be provided that the at least first cartridge chambers and the at least two second cartridge chambers have cylindrical interiors. The cylindrical interiors are preferably sealed in a liquid-tight manner by discharge pistons in the direction of the sides of the cartridge chambers opposite the outlet openings.

[0055] In this context, a cylindrical geometry is understood to mean the shape of a general cylinder, including one with a non-circular base, such as an oval, square, or rectangular base. However, the cylindrical geometry with a circular base is preferred according to the invention.

[0056] The large multi-chamber cartridge has a plurality of first cartridge chambers, and the small multi-chamber cartridge has a plurality of second cartridge chambers. Preferably, the number of first cartridge chambers of the large multi-chamber cartridge is equal to the number of second cartridge chambers of the small multi-chamber cartridge.

[0057] Preferably, the large multi-chamber cartridge can be a large two-chamber cartridge with two first cartridge chambers and a large volume of the two first cartridge chambers, and the small multi-chamber cartridge can be a small two-chamber cartridge with two second cartridge chambers and a small volume of the two second cartridge chambers. The large volume refers to the second cartridge chamber of the small multi-chamber cartridge or two-chamber cartridge, which can be connected to and is associated with the respective first cartridge chamber.

[0058] The objects underlying the present invention are thus achieved in particular by a cartridge system comprising an adapter according to the invention with two inlet openings and with two outlet openings and two separate and distinct lines, the cartridge system further comprising a large two-chamber cartridge with a large volume and a small two-chamber cartridge with a small volume, wherein the small volume of the small two-chamber cartridge is smaller than the large volume of the large two-chamber cartridge, wherein the large two-chamber cartridge has two first cartridge chambers and two first outlet openings, wherein each of the two first cartridge chambers is assigned one of the two first outlet openings, wherein the small two-chamber cartridge has two second cartridge chambers and two second outlet openings, wherein each of the two second cartridge chambers is assigned one of the two second outlet openings,wherein the two first outlet openings are spatially separated from one another and the contents of the two first cartridge chambers can be expelled separately from one another through the two first outlet openings, and wherein the two second outlet openings are spatially separated from one another and the contents of the two second cartridge chambers can be expelled separately from one another through the two second outlet openings, wherein the large two-chamber cartridge is connectable to the first connecting element of the adapter in such a way that the two inlet openings of the adapter are connectable to the two first outlet openings of the large two-chamber cartridge, and wherein the small two-chamber cartridge is connectable to the second connecting element of the adapter in such a way that the two outlet openings of the adapter are connectable to the two second outlet openings of the small two-chamber cartridge,Preferably, the large two-chamber cartridge is connectable to the first connecting element of the adapter in such a way that the two inlet openings of the adapter are connectable in a fluid-conducting and fluid-tight manner to the two first outlet openings of the large multi-chamber cartridge, and the small two-chamber cartridge is connectable to the second connecting element of the adapter in such a way that the two outlet openings of the adapter are connectable in a fluid-conducting and fluid-tight manner to the two second outlet openings of the small two-chamber cartridge.

[0059] The volume of the large multi-chamber cartridge and the small multi-chamber cartridge refers to the volume of the first and second cartridge chambers in which starting components for producing a dental material, in particular a dental impression material, can be or are stored and can be or are discharged from the first and second cartridge chambers.

[0060] The at least two second cartridge chambers are preferably transparent, and preferably the at least two first cartridge chambers are also transparent.

[0061] Preferably, the at least two first cartridge chambers of the large multi-chamber cartridge contain, separately stored from one another, the starting components for producing a dental material, in particular a dental cement or a dental impression material. The dental material is produced by mixing the starting components. The mixing can preferably be carried out using a static mixer or a driven, active mixer. According to the invention, the mixing of the starting components takes place only after the starting components have been dispensed from the small multi-chamber cartridge and after the starting components have been transferred spatially separated from one another from the large multi-clamp cartridge into the small multi-chamber cartridge using the adapter. It can also be provided that the large multi-chamber cartridge has at least two first dispensing pistons and the small multi-chamber cartridge has at least two second dispensing pistons.wherein in each of the at least two first cartridge chambers, on a side of the at least two first cartridge chambers opposite the at least two first outlet openings, one of the at least two first dispensing pistons is arranged, and in each of the at least two second cartridge chambers, on a side of the at least two second cartridge chambers opposite the at least two second outlet openings, one of the at least two second dispensing pistons is arranged, wherein the at least two first dispensing pistons are mounted so as to be movable in the direction of the associated at least two first outlet openings, wherein the at least two second dispensing pistons are mounted so as to be movable in the direction of the associated at least two second outlet openings,wherein liquid or pasty starting components for producing a dental material are preferably contained between the at least two first discharge pistons and the at least two first outlet openings in the at least two first cartridge chambers of the large multi-chamber cartridge, wherein liquid or pasty starting components for producing a dental material are particularly preferably contained between the at least two second discharge pistons and the at least two second outlet openings in the at least two second cartridge chambers of the small multi-chamber cartridge.

[0062] This allows the liquid or pasty starting components contained in the large multi-chamber cartridge to be easily pumped out and pressed into the small multi-chamber cartridge.

[0063] In preferred cartridge systems according to the invention, it can be provided that the cartridge system has a closure cap for closing the at least two first outlet openings of the large multi-chamber cartridge, wherein the closure cap can be connected to a connecting element of the large multi-chamber cartridge, wherein the adapter on the large multi-chamber cartridge can also be connected to the connecting element.

[0064] This improves the durability of the starting components in the first multi-chamber cartridge and eliminates the need for additional connecting devices.

[0065] It can be provided that the cartridge system has a closure cap for closing the at least two second outlet openings of the small multi-chamber cartridge, wherein the closure cap is connectable to a connecting element of the small multi-chamber cartridge, wherein the adapter on the small multi-chamber cartridge can also be connected to the connecting element. Furthermore, it can be provided that the cartridge system has a dispensing tube containing a static mixer, wherein the dispensing tube can be connected to the connecting element of the small multi-chamber cartridge, wherein the adapter on the small multi-chamber cartridge can also be connected to the connecting element. These measures can also avoid the need for additional connecting devices.

[0066] The objects underlying the present invention can also be at least partially achieved by a method for transferring at least two liquid and / or pasty starting components of a dental material from a large multi-chamber cartridge with a large volume into a small multi-chamber cartridge with a small volume, wherein the small volume of the small multi-chamber cartridge is smaller than the large volume of the large multi-chamber cartridge, wherein the large multi-chamber cartridge has at least two first cartridge chambers and at least two first outlet openings, wherein each of the at least two first cartridge chambers is assigned one of the at least two first outlet openings, wherein the small multi-chamber cartridge has at least two second cartridge chambers and at least two second outlet openings, wherein each of the at least two second cartridge chambers is assigned one of the at least two second outlet openings,wherein the at least two first outlet openings are spatially separated from one another and the contents of the at least two first cartridge chambers can be expelled separately from one another through the at least two first outlet openings, and wherein the at least two second outlet openings are spatially separated from one another and the contents of the at least two second cartridge chambers can be expelled separately from one another through the at least two second outlet openings or through which starting components for producing a dental material can be filled into the at least two second cartridge chambers, the method comprising the steps:

[0067] A) Attaching an adapter to the large multi-chamber cartridge and to the small multi-chamber cartridge, wherein the at least two first outlet openings of the large multi-chamber cartridge are fluidly connected to at least two inlet openings of the adapter and the at least two second outlet openings of the small multi-chamber cartridge are fluidly connected to at least two outlet openings of the adapter, wherein the inlet openings are fluidly connected to the at least two outlet openings of the adapter within the adapter by separate and distinct lines;

[0068] B) pressing out at least two starting components from the at least two first cartridge chambers of the large multi-chamber cartridge through the at least two first outlet openings of the large multi-chamber cartridge and the associated at least two inlet openings of the adapter into the separate and mutually separated lines of the adapter;

[0069] C) passing the at least two output components through the separate and distinct lines of the adapter to the at least two outlet openings of the adapter; and

[0070] D) Filling the at least two starting components through the at least two outlet openings of the adapter and through the at least two second outlet openings of the small multi-chamber cartridge connected to the at least two outlet openings of the adapter into the at least two second cartridge chambers of the small multi-chamber cartridge; wherein the at least two starting components do not come into direct contact with one another during the pressing out, passing through, and filling.

[0071] Preferably, the at least two starting components contained in the large multi-chamber cartridge are extruded by advancing at least two first dispensing pistons, which are movably mounted in the interiors of the at least two first cartridge chambers, toward the at least two first outlet openings. For this purpose, the starting components are mounted separately from one another between the at least two first outlet openings and the at least two first dispensing pistons in the at least two first cartridge chambers of the large multi-chamber cartridge.

[0072] The fact that the outlet openings are assigned to the cartridge chambers means that the cartridge chambers open into the assigned outlet opening.

[0073] In methods according to the invention, it can be provided that when the at least two output components are passed through the adapter, the flows of the at least two output components are moved towards one another and / or the flow velocity of at least one of the flows of the at least two output components is accelerated in the direction of at least one of the at least two outlet openings due to a reduction in the line diameter of at least one of the separate and mutually separated lines of the adapter.

[0074] This facilitates filling the small multi-chamber cartridge. At the same time, the small multi-chamber cartridge can be constructed as usual with at least two second outlet openings of the at least two second cartridge chambers located closely together, allowing the use of conventional dispensing tubes (optionally with static mixers). Furthermore, due to the closely spaced at least two second outlet openings of the small multi-chamber cartridge, the starting components can be mixed more easily, and less of the starting component material remains in the dispensing tube, enabling resource-efficient final processing of the starting components.This also enables reverse filling from the small to the large multi-chamber cartridge, because the longer stroke of the smaller dispensing pistons in the small multi-chamber cartridge also allows the larger dispensing pistons in the large multi-chamber cartridge to be moved with a shorter stroke. The different diameters, together with the hydraulic properties of the liquid or pasty starting components, translate the necessary forces.

[0075] Furthermore, it can be provided that an adapter according to the invention is used as the adapter or that a cartridge system according to the invention is used to implement the method.

[0076] The method thus utilizes the advantages achieved by the adapter according to the invention and the cartridge system according to the invention.

[0077] The invention is based on the surprising finding that by using an adapter with at least one large inlet opening and with at least one outlet opening that is smaller in relation thereto and / or with separate and separate lines that converge on one another, it is possible to fill a smaller multi-chamber cartridge from an existing larger multi-chamber cartridge and thereby make the large storage volume of the large multi-chamber cartridge and the easier handling of the small multi-chamber cartridge usable for the user, and at the same time to prevent wasting of starting components that could otherwise remain as residual quantities in the multi-chamber cartridges.

[0078] The present invention provides the user (the dentist) with a more manageable system that they can easily fill with the desired material themselves. Even when using the smaller cartridge, the user is not limited to a single application, but can apply multiple times using interchangeable mixers (even for different patients if necessary). Furthermore, the user saves time during the treatment process because, thanks to the storage stability of the starting materials, filling the system can be prepared within a range of several hours to several days or even weeks. This makes it possible to integrate the manageable system, namely the small multi-chamber cartridge, directly into an impression process at any time.In particular, the adapter according to the invention, which connects a large multi-chamber cartridge as a storage container with a small, handy application form such as a small multi-chamber cartridge, is part of the present invention.

[0079] The separate, converging lines and / or the reduction of the free cross-section of the separate, converging lines facilitate filling the small multi-chamber cartridge. At the same time, the small multi-chamber cartridge can be constructed as usual with the cartridge chamber outlets located closely together, allowing the use of conventional dispensing tubes (optionally with static mixers). Furthermore, the closely spaced outlets of the small multi-chamber cartridge make it easier to mix the starting components, and less of the starting component material remains in the dispensing tube, enabling resource-efficient final processing of the starting components.

[0080] A two-sided adapter according to the invention can therefore be characterized in particular in that it has, as a first interface, the same dimensions as the outlet and collar ring of a large multi-chamber cartridge on the inlet side, such as preferably a dental 50 ml multi-chamber cartridge, or at least can be easily and tightly fixed there, and that it has, on the outlet side of the adapter, an interface of the same dimensions as the outlet and collar ring of a small multi-chamber cartridge, or at least has an interface there that can be easily and tightly fixed, wherein the small multi-chamber cartridge can be filled on its outlet side with the piston inserted.

[0081] Compared to self-filling syringes, the adapter solution according to the invention has the advantage that the smaller multi-chamber cartridge is filled from the "front," allowing the system to be filled without contamination and eliminating the need to insert a dispensing piston and, if necessary, a piston rod. Furthermore, the larger volume of up to 10 ml, for example, allows greater flexibility regarding the number of teeth to be coated. The replaceable mixer enables multiple applications. The higher-quality and therefore more gas-tight dispensing pistons allow the starting components to be filled into the small multi-chamber cartridges with a stable storage life of several weeks. Furthermore, the manufacturer eliminates the need for an additional filling system for small multi-chamber cartridges.

[0082] The use of the smaller multi-chamber cartridge can lead to improved precision in the application of the impression material. Pre-portioning by the user is possible for several days or even weeks. The invention thus enables easier handling than previous individual multi-chamber cartridges.

[0083] Further exemplary embodiments of the invention are explained below with reference to nine schematically illustrated figures, without, however, limiting the invention. Figure 1 shows a schematic cross-sectional view of a cartridge system according to the invention with an adapter according to the invention, a closed large multi-chamber cartridge, and a small multi-chamber cartridge in the initial state;

[0084] Figure 2: a schematic cross-sectional view of the cartridge system according to the invention and the adapter according to the invention according to Figure 1, wherein the large multi-chamber cartridge and the small multi-chamber cartridge are attached to the adapter according to the invention;

[0085] Figure 3: a schematic cross-sectional view of the large and small multi-chamber cartridge according to Figure 2, attached with the adapter according to the invention, during the pressing out and passage of two starting components;

[0086] Figure 4: a schematic cross-sectional view of the large and small multi-chamber cartridges according to Figures 2 and 3 attached with the adapter according to the invention during the pressing out, passing through and filling of the two starting components from the large multi-chamber cartridge through the adapter into the small multi-chamber cartridge;

[0087] Figure 5: a schematic plan view of one side of an alternative second adapter according to the invention with an open locking sleeve to which a small two-chamber cartridge can be connected;

[0088] Figure 6: a schematic cross-sectional view of the second adapter according to the invention according to Figure 5;

[0089] Figure 7: a schematic plan view of the side of the second adapter according to the invention shown in Figure 5 with the locking sleeve closed by rotating the locking sleeve against the central body of the adapter;

[0090] Figure 8: a schematic plan view of one side of an alternative third adapter according to the invention with three lines to which a small multi-chamber cartridge can be connected; and

[0091] Figure 9: a schematic cross-sectional view of an alternative fourth adapter according to the invention with lines converging in the direction of outlet openings.

[0092] Figures 1 to 4 show the sequence of a method according to the invention in the form of schematic cross-sectional views through an adapter 1 according to the invention and through a large multi-chamber cartridge 2 and a small multi-chamber cartridge 3. The adapter 1, the large multi-chamber cartridge 2 and the small multi-chamber cartridge 3 are shown separately from one another in Figure 1. In Figures 2 to 4, the adapter 1 is fastened to the large multi-chamber cartridge 2 and to the small multi-chamber cartridge 3 as intended. The large multi-chamber cartridge 2 can have two separate first cartridge chambers 4, 5. Each of the first cartridge chambers 4, 5 opens into a first outlet opening 6, 7 through which the contents of the first cartridge chambers 4, 5 can be expelled.The first outlet openings 6, 7 can be arranged at the end of two first tubes, which can be spatially separated from one another but arranged close to one another in order to keep the distance until the contents of the first cartridge chambers 4, 5 are mixed as short as possible. It is also possible for the large multi-chamber cartridge 2 to have more than two first cartridge chambers 4, 5, for example, three. In all cases, the first cartridge chambers 4, 5 are preferably arranged symmetrically to a central axis of the large multi-chamber cartridge 2.

[0093] The small multi-chamber cartridge 3 can have two separate second cartridge chambers 8, 9. Each of the second cartridge chambers 8, 9 opens into a second outlet opening 10, 11 through which the contents of the second cartridge chambers 8, 9 can be expelled or through which a liquid or paste can be poured. The second outlet openings 8, 9 can be arranged at the end of two second tubes, which can be spatially separated from one another but arranged close to one another in order to keep the distance until the contents of the second cartridge chambers 8, 9 mix as short as possible. It is also possible for the small multi-chamber cartridge 3 to have more than two second cartridge chambers 8, 9, for example three. In any case, the number of first cartridge chambers 4, 5 of the large multi-chamber cartridge 2 should be equal to the number of second cartridge chambers 8, 9 of the small multi-chamber cartridge 3.The second cartridge chambers 8, 9 are in all cases preferably arranged symmetrically to a central axis of the small multi-chamber cartridge 3.

[0094] The adapter 1 can be constructed in sections as a cylindrical body. The adapter 1 can be constructed in two parts and have a locking sleeve 13 and a central body 15, wherein the locking sleeve 13 can be plugged onto the central body 15. The locking sleeve 13 can be rotatably mounted relative to the central body 15. The locking sleeve 13 can be secured by injection molding techniques or suitable tongue-and-groove systems to prevent the locking sleeve 13 from being pulled off or slipping off the central body 15 of the adapter 1. The locking sleeve 13 can be used to lock and tighten the connections of the adapter 1 to the large multi-chamber cartridge 2 and the small multi-chamber cartridge 3 in order to enable a pressure-tight connection of the adapter 1 to the large multi-chamber cartridge 2 and the small multi-chamber cartridge 3.

[0095] The adapter 1 has a first connecting element 12 for connecting to the large multi-chamber cartridge 2 and a second connecting element 14 for connecting to the small multi-chamber cartridge 3. The first connecting element 12 and the second connecting element 14 can be arranged on the locking sleeve 13. The first connecting element 12 and the second connecting element 14 can be formed by an outwardly projecting circular disc segment. The first connecting element 12 and the second connecting element 14 can form part of a bayonet lock, which can be operated by rotating the locking sleeve 13 against the central body 15.

[0096] The adapter 1 has two inlet openings 16, 18 for connecting to the first outlet openings 6, 7 of the large multi-chamber cartridge 2 and two outlet openings 20, 22 for connecting to the second outlet openings 10, 11 of the small multi-chamber cartridge 3. Each of the inlet openings 16, 18 is connected to one of the outlet openings 20, 22 inside the central body 15 of the adapter 1 by a line 24, 26. The lines 24, 26 run separately from each other inside the adapter 1. The inlet openings 16, 18 can have a larger free line cross-section (a larger diameter) than the outlet openings 20, 22. Since the second outlet openings 10, 11 of the small multi-chamber cartridge 3 can be located closer together than the first outlet openings 6, 7 of the large multi-chamber cartridge 2, the outlet openings 20, 22 can also be (spatially) closer together than the inlet openings 16, 18.The two lines 24, 26 can run toward each other from the inlet openings 16, 18 toward the outlet openings 20, 22. The free cross-section (diameter) of the lines 24, 26 can also be reduced in the same direction.

[0097] The adapter 1 can be made of a plastic. Preferably, the adapter 1 can be transparent, at least in the area of ​​the lines 24, 26. Preferably, the adapter 1, at least in the area of ​​the lines 24, 26, is made of a material that is not wetted by the liquid or pasty materials to be mixed (the starting components 48, 50). It can also be provided that the lines 24, 26 are coated with a material that is not wetted by the liquid or pasty materials to be mixed (the starting components 48, 50). For a tight connection of the adapter 1 to the large multi-chamber cartridge 2, circumferential sealing surfaces 28, 30 can be provided around the inlet openings 16, 18. The large multi-chamber cartridge 2 can have suitable sealing surfaces circumferentially around the first outlet openings 6, 7.For a tight connection of the adapter 1 to the small multi-chamber cartridge 3, circumferential sealing surfaces 32, 34 can be provided around the outlet openings 20, 22. The small multi-chamber cartridge 3 can have matching sealing surfaces circumferentially around the second outlet openings 8, 9.

[0098] The large multi-chamber cartridge 2 can have a mating connecting element 36 on a front side, where the first outlet openings 6, 7 are arranged, which is to be frictionally connected to the first connecting element 12 of the adapter 1. The mating connecting element 36 and the first connecting element 12 can form a bayonet lock, which can be closed and opened by rotating the locking sleeve 13 of the adapter 1 against the large multi-chamber cartridge 2 and against the central body 15 of the adapter 1. Alternatively, the first connecting element 12 and the mating connecting element 36 can also be constructed as a thread and mating thread.

[0099] The first outlet openings 6, 7 of the large multi-chamber cartridge 2 can be closed in the initial state (see Figure 1) by a closure cap 40. The closure cap 40 can have a handle 42 for turning and manually removing the closure cap 40 from the large multi-chamber cartridge 2. The closure cap 40 can have a connecting element 44 that fits the mating connecting element 36 of the large multi-chamber cartridge 2. For this purpose, the closure cap 40 can have a connecting element with the same shape as the first connecting element 12 of the adapter 1.

[0100] Liquid or paste-like starting components 48, 50 can be located separately in the first cartridge chambers 4, 5 of the large multi-chamber cartridge 2. A material, such as, for example, and preferably, a dental impression material, can be mixed from the starting components 48, 50.

[0101] The closure cap 40 is intended to ensure that the liquid or pasty starting components 48, 50 can be stored for a long time in the first cartridge chambers 4, 5 of the large multi-chamber cartridge 2 without them hardening or in such a way that their composition and viscosity do not change adversely or not too quickly due to evaporation of a component of the starting components 48, 50.

[0102] The first cartridge chambers 4, 5 of the large multi-chamber cartridge 2 can be closed on the sides opposite the first outlet openings 6, 7 by first discharge pistons 52, 56. The first discharge pistons 52, 56 can have circumferential sealing rings 54, 58, with which the first discharge pistons 52, 56 are sealed against the inner wall of the first cartridge chambers 4, 5. The sealing rings 54, 58 can be made of rubber. Otherwise, the first discharge pistons 52, 56 are preferably made of a plastic.

[0103] On its rear side opposite the first outlet openings 6, 7, the large multi-chamber cartridge 2 can have a holder 60 with which the large multi-chamber cartridge 2 can be attached to a dispensing device (not shown) in order to press the first dispensing pistons 52, 56 toward the first outlet openings 6, 7 with the aid of tappets 76 of the dispensing device (see Figure 4). The small multi-chamber cartridge 3 can have, on a front side, on which the second outlet openings 10, 11 are arranged, a counter-connecting element 62, which is to be non-positively connected to the second connecting element 14 of the adapter 1. The counter-connecting element 62 and the second connecting element 14 can form a bayonet closure which can be closed and opened by rotating the locking sleeve 13 of the adapter 1 against the small multi-chamber cartridge 3 and against the central body 15 of the adapter 1.Alternatively, the second connecting element 14 and the counter-connecting element 62 can also be constructed as a thread and counter-thread.

[0104] Preferably, the mating connecting element 36 and the first connecting element 12 can be connected to one another by rotating in the opposite direction compared to the mating connecting element 62 and the second connecting element 14. This ensures that a rotation of the locking sleeve 13 of the adapter 1 toward the large multi-chamber cartridge 2 and toward the small multi-chamber cartridge 3 always simultaneously attaches or detaches the adapter 1 from both multi-chamber cartridges 2, 3.

[0105] The second outlet openings 10, 11 of the small multi-chamber cartridge 3 can be closed after filling (see Figure 4) by a closure cap (not shown, but analogous to the closure cap 40 for the large multi-chamber cartridge 2). For this purpose, the closure cap for the small multi-chamber cartridge 3 can have a handle for turning and manually fastening and manually releasing the closure cap from the small multi-chamber cartridge 3. The closure cap can have a connecting element that fits the mating connecting element 62 of the small multi-chamber cartridge 3. For this purpose, the closure cap can have connecting elements with the same shape as the second connecting element 14 of the adapter 1.

[0106] The liquid or pasty starting components 48, 50, which are separately filled into the second cartridge chambers 8, 9 of the small multi-chamber cartridge 3, are stored separately in the second cartridge chambers 8, 9 until application. The closure cap is intended to ensure that the liquid or pasty starting components 48, 50 can be stored in the second cartridge chambers 8, 9 of the small multi-chamber cartridge 3 for as long as possible without hardening or without adversely changing their composition and viscosity due to the evaporation of a component of the starting components 48, 50, or without changing too quickly.

[0107] A dispensing tube with a static mixer (not shown) can also be attached to the mating connecting elements 62 of the small multi-chamber cartridge 3, through which the starting components 48, 50 can be mixed and the resulting mixture applied. For this purpose, the dispensing tube can have a connecting element with the same shape as the second connecting element 14 of the adapter 1.

[0108] The second cartridge chambers 8, 9 of the small multi-chamber cartridge 3 are preferably empty in the initial state (Figure 1), but can also be filled with a residual amount of starting components 48, 50.

[0109] The second cartridge chambers 8, 9 of the small multi-chamber cartridge 3 can be closed on the sides opposite the second outlet openings 10, 11 by second discharge pistons 66, 70. The second discharge pistons 66, 70 can have circumferential sealing rings 68, 72, with which the second discharge pistons 66, 70 are sealed against the inner wall of the second cartridge chambers 8, 9. The sealing rings 68, 72 can be made of rubber. Otherwise, the second discharge pistons 66, 70 are preferably made of plastic.

[0110] On its rear side opposite the second outlet openings 10, 11, the small multi-chamber cartridge 3 can have a holder 74 with which the small multi-chamber cartridge 3 can be attached to a squeezing device (not shown) or can be operated manually in order to press the second dispensing pistons 66, 70 after filling the second cartridge chambers 8, 9 with the starting components 48, 50 with the aid of tappets of the squeezing device or with the aid of a manually operated piston in the direction of the second outlet openings 10, 11 and thereby to mix and apply the starting components 48, 50 with one another.

[0111] The sequence of a method according to the invention is shown in Figures 1 to 4.

[0112] First, if present, the closure cap 40 from the large multi-chamber cartridge 2 and the closure cap from the small multi-chamber cartridge 3 can be removed.

[0113] The adapter 1 can then be fastened with the first connecting element 12 to the mating connecting element 36 of the large multi-chamber cartridge 2, so that the first outlet openings 6, 7 of the large multi-chamber cartridge 2 are fluidly connected to the inlet openings 16, 18 of the adapter 1. For this purpose, the locking sleeve 13 can be rotated against the large multi-chamber cartridge 2 and against the central body 15 of the adapter 1. The sealing surfaces 28, 30 of the adapter 1 preferably adjoin corresponding sealing surfaces around the outlet openings 6, 7 of the large multi-chamber cartridge 2 in a flush manner. The locking sleeve 13 can be used to exert a force for pressure-tightly connecting the sealing surfaces 28, 30 of the adapter 1 to the outlet openings 6, 7 of the large multi-chamber cartridge 2.With such a closure by the first connecting element 12 of the locking sleeve 13 of the adapter 1 and the mating connecting element 36 of the large multi-chamber cartridge 2, a frictional connection can be achieved, resulting in a liquid-tight and stable connection. To achieve better sealing, additional circumferential seals can be arranged in the area of ​​the sealing surfaces 28, 30. Likewise, at the same time, or before or after, the adapter 1 can be fastened to the mating connecting element 62 of the small multi-chamber cartridge 3 with the second connecting element 14, so that the second outlet openings 10, 11 of the small multi-chamber cartridge 3 are fluidly connected to the outlet openings 20, 22 of the adapter 1. For this purpose, the locking sleeve 13 can be rotated against the small multi-chamber cartridge 3 and against the central body 15 of the adapter 1. This situation is shown in Figure 2.The sealing surfaces 32, 34 of the adapter 1 preferably adjoin flush with corresponding sealing surfaces around the outlet openings 10, 11 of the small multi-chamber cartridge 3. The locking sleeve 13 can exert a force for pressure-tight connection of the sealing surfaces 32, 34 of the adapter 1 with the outlet openings 10, 11 of the small multi-chamber cartridge 3. Such a closure by the second connecting element 14 of the locking sleeve 13 of the adapter 1 and the mating connecting element 62 of the small multi-chamber cartridge 3 can create a frictional connection that creates a liquid-tight and stable connection. To achieve better sealing, additional circumferential seals can be arranged in the area of ​​the sealing surfaces 32, 34.

[0114] Subsequently, i.e., after the adapter 1 has been connected to the large multi-chamber cartridge 2 and the small multi-chamber cartridge 3, the output components 48, 50 are pressed out of the first cartridge chambers 4, 5 of the large multi-chamber cartridge 2 through the first outlet openings 6, 7 of the large multi-chamber cartridge 2 and the associated inlet openings 16, 18 of the adapter 1 into the separate and distinct lines 24, 26 of the adapter 1. For this purpose, the output components 48, 50 can be driven by the first discharge pistons 52, 56. The output components 48, 50 then flow further and are conveyed through the lines 24, 26 of the adapter 1 to the at least two outlet openings 20, 22 of the adapter 1 (see Figure 3). The currents of the output components 48, 50 can be redirected, in particular directed towards each other.At the same time, by reducing the diameter of the lines 24, 26 in the direction of the outlet openings 20, 22, the flow velocity of the output components 48, 50 can be accelerated. By further advancing the first discharge pistons 52, 56, the output components 48, 50 are filled through the outlet openings 20, 22 of the adapter 1 and through the second outlet openings 10, 11 of the small multi-chamber cartridge 3, which are connected to the outlet openings 20, 22 of the adapter 1, into the second cartridge chambers 8, 9 of the small multi-chamber cartridge 3. The second discharge pistons 66, 70 are pushed by the output components 48, 50 in the direction of the holder 74 until the small multi-chamber cartridge 3 is filled (see Figure 4). A stop (not shown) can prevent the second discharge pistons 66, 70 from being pushed out of the second cartridge chambers 8, 9.Excess air or gases can be forced out past the discharge pistons 52, 56, 66, 70 and / or at the connection between the adapter 1 and the large multi-chamber cartridge 2 and the small multi-chamber cartridge 3. For this purpose, at least one liquid-tight, but at least under excess pressure gas-permeable passage (not visible in Figures 1 to 4) can be provided at any point on the adapter 1, leading from the lines 24, 26 outward to the environment of the adapter 1. For this purpose, a pore filter (not shown) can be arranged in the at least one passage. During the squeezing, passing, and filling processes, the starting components 48, 50 do not come into direct contact with one another and therefore cannot chemically react with one another.

[0115] The large multi-chamber cartridge 2 and the small multi-chamber cartridge 3 can then be detached from the adapter 1 by rotating the locking sleeve 13, thereby opening it. The large multi-chamber cartridge 2 can then be closed with the closure cap 40. After being detached from the adapter 1, the small multi-chamber cartridge 3 can be closed with its closure cap (not shown), or an application tip with a built-in static mixer (not shown) can be attached as described above.

[0116] Figures 5, 6, and 7 show an alternative second adapter 101 according to the invention, to which a small two-chamber cartridge (not shown) and a large two-chamber cartridge (not shown) can be connected. Figure 5 shows a schematic plan view of one side of the adapter 101 with a locking sleeve 113 in the open position, to which the small two-chamber cartridge can be connected; Figure 6 shows a schematic cross-sectional view of the adapter 101 along the cross-sectional plane AA, which is indicated in Figure 5 as a dashed line; and Figure 7 shows a schematic plan view of the side of the second adapter 101 according to the invention shown in Figure 5, with the locking sleeve 113 closed by rotating the locking sleeve 113 of the adapter 101.

[0117] The adapter 101 can be constructed in sections as a cylindrical body. The adapter 101 has a first connecting element 112 for connection to a large multi-chamber cartridge (not shown) and a second connecting element 114 for connection to a small multi-chamber cartridge (not shown). The large multi-chamber cartridge and the small multi-chamber cartridge can be constructed analogously to the embodiment according to Figures 1 to 4 and connected to the adapter 101. The adapter 101 can be constructed in two parts and have a locking sleeve 113 and a central body 115, wherein the locking sleeve 113 can be plugged onto the central body 115. The locking sleeve 113 can be rotatably mounted relative to the central body 115. The locking sleeve 113 may be secured by injection molding techniques or suitable tongue and groove systems to prevent the locking sleeve 113 from being pulled off or slipping off the central body 115 of the adapter 101.With the locking sleeve 113, the connections of the adapter 101 to the large multi-chamber cartridge and the small multi-chamber cartridge can be locked and tightened to enable a pressure-tight connection of the adapter 101 to the large multi-chamber cartridge and the small multi-chamber cartridge.

[0118] The first connecting element 112 and the second connecting element 114 can be formed by an outwardly projecting circular disk segment. The first connecting element 112 and the second connecting element 114 can be arranged on the locking sleeve 113. The first connecting element 112 and the second connecting element 114 can form part of a bayonet lock, which can be operated by rotating the locking sleeve 113 against the central body 115 (see the comparison of Figure 5 and Figure 7).

[0119] The adapter 101 has two inlet openings 116, 118 for connecting to first outlet openings of the large multi-chamber cartridge and two outlet openings 120, 122 for connecting to second outlet openings of the small multi-chamber cartridge. Each of the inlet openings 116, 118 is connected to one of the outlet openings 120, 122 inside the central body 115 of the adapter 101 by a line 124, 126. The lines 124, 126 run separately from each other inside the adapter 101. The inlet openings 116, 118 can have a larger free line cross-section (a larger diameter) than the outlet openings 120, 122. The outlet openings 120, 122 can be (spatially) closer to each other than the inlet openings 116, 118. The two lines 124, 126 can run from the inlet openings 116, 118 in the direction of the outlet openings 120, 122 in the direction of each other.In the same direction, the free cross-section (diameter) of the lines 124, 126 can also be reduced. In contrast to the adapter 1 according to Figures 1 to 4, the lines 124, 126 of the adapter 101 according to Figures 5 and 6 are straight and have a conical shape with axes inclined toward each other.

[0120] The adapter 101 can be made of a plastic. Preferably, the adapter 101 can be transparent, at least in the area of ​​the lines 124, 126. Preferably, the adapter 101, at least in the area of ​​the lines 124, 126, is made of a material that is not wetted by the liquid or pasty materials to be mixed (the starting components contained in the large multi-chamber cartridge). It can also be provided that the lines 124, 126 are coated with a material that is not wetted by the liquid or pasty materials to be mixed (the starting components). For a tight connection of the adapter 101 to the large multi-chamber cartridge, circumferential sealing surfaces 128, 130 can be provided around the inlet openings 116, 118. The large multi-chamber cartridge can have suitable sealing surfaces circumferentially around the first outlet openings.For a tight connection of the adapter 101 to the small multi-chamber cartridge, circumferential sealing surfaces 132, 134 can be provided around the outlet openings 120, 122. The small multi-chamber cartridge can have matching sealing surfaces circumferentially around the second outlet openings.

[0121] The adapter 101 can be frictionally connected to the large multi-chamber cartridge using the first connecting element 112 and matching mating connecting elements. The mating connecting element and the first connecting element 112 can form a bayonet lock, which can be closed and opened by rotating the locking sleeve 113 of the adapter 101 against the large multi-chamber cartridge and against the central body 115 of the adapter 101. Alternatively, the first connecting element 112 can also be constructed as a thread and the mating connecting element as a counter-thread.

[0122] The adapter 101 can be frictionally connected to the small multi-chamber cartridge by means of the second connecting element 114 and matching mating connecting elements. The mating connecting element and the second connecting element 114 can form a bayonet lock, which can be closed and opened by rotating the locking sleeve 113 of the adapter 101 against the small multi-chamber cartridge and against the central body 115 of the adapter 101. Alternatively, the first connecting element 114 can also be designed as a thread and the mating connecting element as a counter-thread.

[0123] Preferably, the mating connecting element of the large multi-chamber cartridge and the first connecting element 112 can be connected to each other by rotating in the opposite direction compared to the mating connecting element of the small multi-chamber cartridge and the second connecting element 114. This ensures that rotating the locking sleeve 113 of the adapter 101 toward the large multi-chamber cartridge and toward the small multi-chamber cartridge always simultaneously attaches or detaches the adapter 101 from both multi-chamber cartridges.

[0124] In the area of ​​the sealing surfaces 132, 134, a passage with a pore filter 140 can be arranged in each line 124, 126, through which excess gas can escape during transfer. A pressure relief valve 142 can be arranged on the outside of each passage 140, whereby the pressure relief valve 142 only opens when the pressure of a gas in the lines 124, 126 is higher than the ambient pressure (normal pressure) in the vicinity of the adapter 101. The pressure relief valve 142 can be implemented, for example, as a simple lip valve. However, the pressure relief valve 142 can also be omitted.

[0125] On the side for connection to the large multi-chamber cartridge (the side opposite the top views according to Figures 5 and 7), a projection 144 can be provided on the adapter 101, with which a corresponding and matching groove (not shown) on the large multi-chamber cartridge can be used to ensure that the adapter 101 can only be attached to the large multi-chamber cartridge in a specific position. On the side for connection to the small multi-chamber cartridge (the sides shown in the top views according to Figures 5 and 7), a projection 146 can be provided on the adapter 101, with which a corresponding and matching groove (not shown) on the small multi-chamber cartridge can be used to ensure that the adapter 101 can only be attached to the small multi-chamber cartridge in a specific position.This ensures that the output components do not reach the wrong cartridge chambers and that different output components are passed through the lines 124, 126 and can therefore react undesirably with the respective other output component in the lines 124, 126 and thereby close the lines 124, 126 or reduce their diameter and thereby render the adapter 101 unusable.

[0126] Analogous to the process according to Figures 1 to 4, the adapter 101 according to Figures 5 to 7 can be attached to the large multi-chamber cartridge with the first connecting element 112, so that the first outlet openings of the large multi-chamber cartridge are fluidly connected to the inlet openings 116, 118 of the adapter 101. For this purpose, the locking sleeve 113 can be rotated against the large multi-chamber cartridge and against the central body 115 of the adapter 101. The sealing surfaces 128, 130 of the adapter 101 preferably adjoin corresponding sealing surfaces around the outlet openings of the large multi-chamber cartridge in a flush manner. The locking sleeve 113 can be used to exert a force for pressure-tightly connecting the sealing surfaces 128, 130 of the adapter 101 to the outlet openings of the large multi-chamber cartridge.Such a closure by the first connecting element 112 of the locking sleeve 113 of the adapter 101 can create a frictional connection that creates a liquid-tight and stable connection. To achieve better sealing, additional circumferential seals can be arranged in the area of ​​the sealing surfaces 128, 130. Likewise, at the same time, or before or after this, the adapter 101 can be attached to the small multi-chamber cartridge with the second connecting element 114, so that the second outlet openings of the small multi-chamber cartridge are fluid-conductingly connected to the outlet openings 120, 122 of the adapter 101. For this purpose, the locking sleeve 113 can be rotated against the small multi-chamber cartridge and against the central body 115 of the adapter 101.The sealing surfaces 132, 134 of the adapter 101 preferably adjoin flush with corresponding sealing surfaces around the outlet openings of the small multi-chamber cartridge. Such a closure by the connecting element 114 of the locking sleeve 113 of the adapter 101 can create a frictional connection that creates a liquid-tight and stable connection. To achieve a better seal, additional circumferential seals can be arranged in the area of ​​the sealing surfaces 132, 134.

[0127] Subsequently, i.e., after the adapter 101 has been connected to the large multi-chamber cartridge and the small multi-chamber cartridge, the starting components are pressed out of the large multi-chamber cartridge through the first outlet openings of the large multi-chamber cartridge and the associated inlet openings 116, 118 of the adapter 101 into the separate and distinct lines 124, 126 of the adapter 101. The starting components then flow further and are guided through the lines 124, 126 of the adapter 101 to the at least two outlet openings 120, 122 of the adapter. In this process, the streams of the starting components can be redirected, in particular directed toward each other. At the same time, the flow velocity of the starting components can be accelerated by reducing the diameter of the lines 124, 126 in the direction of the outlet openings 120, 122.Due to the flows, the starting components are filled into the small multi-chamber cartridge through the outlet openings 120, 122 of the adapter 101 and through the second outlet openings of the small multi-chamber cartridge connected to the outlet openings 120, 122 of the adapter 101.

[0128] Excess air or gases can be forced out through the passages and pore filters 140 to the outside of the adapter 101. During the extrusion, passage, and filling processes, the starting components do not come into direct contact with each other and therefore cannot react chemically with each other.

[0129] The large multi-chamber cartridge and the small multi-chamber cartridge can then be detached from the adapter 101 by rotating the locking sleeve 113, thereby opening it. The large multi-chamber cartridge and the small multi-chamber cartridge can then be closed with closure caps (not shown, but analogous to the closure cap 40 in Figure 1). After being detached from the adapter 101, the small multi-chamber cartridge can be attached to an application tip with a built-in static mixer (not shown). Figure 8 shows a schematic plan view of one side of an alternative third adapter 201 according to the invention with three lines 224, to which a small multi-chamber cartridge with three cartridge chambers can be connected. A large multi-chamber cartridge with three cartridge chambers can be connected to the opposite side.In contrast to the first and second embodiments, the adapter 201 does not have a separate locking sleeve and is connected to the multi-chamber cartridges by rotating the adapter 201.

[0130] The adapter 201 can be constructed in some areas as a cylindrical body. The adapter 201 has a first connecting element 212 for connecting to a large multi-chamber cartridge (not shown) and a second connecting element 214 for connecting to a small multi-chamber cartridge (not shown) on the opposite side (in Figure 8, at the rear in the plane of the page). The large multi-chamber cartridge and the small multi-chamber cartridge can be constructed analogously to the embodiment according to Figures 1 to 4, but with three cartridge chambers, and can be connected to the adapter 201. The first connecting element 212 and the second connecting element 214 can be formed by an outwardly projecting circular disk segment. The first connecting element 212 and the second connecting element 214 can form part of a bayonet closure.

[0131] The adapter 201 has three inlet openings 216 for connecting to three first outlet openings of the large multi-chamber cartridge and three outlet openings 220 for connecting to three second outlet openings of the small multi-chamber cartridge. Each of the inlet openings 216 is connected to one of the outlet openings 220 inside the adapter 201 by a line 224. The lines 224 run separately from one another inside the adapter 201. The inlet openings 216 can have a larger free line cross-section (a larger diameter) than the outlet openings 220. The outlet openings 220 can be located (spatially) closer together than the inlet openings 216. The three lines 224 can run from the inlet openings 216 toward the outlet openings 220 in the direction of one another. In the same direction, the free cross-section (diameter) of the lines 224 can also be reduced.

[0132] The adapter 201 can be made of a plastic. Preferably, the adapter 201 can be transparent, at least in the area of ​​the lines 224. Preferably, the adapter 201, at least in the area of ​​the lines 224, is made of a material that is not wetted by the liquid or pasty materials to be mixed (the starting components contained in the large multi-chamber cartridge). It can also be provided that the lines 224 are coated with a material that is not wetted by the liquid or pasty materials to be mixed (the starting components). For a tight connection of the adapter 201 to the large multi-chamber cartridge, circumferential sealing surfaces 228 can be provided around the inlet openings 216. The large multi-chamber cartridge can have suitable sealing surfaces circumferentially around the first outlet openings.For a tight connection of the adapter 201 to the small multi-chamber cartridge, circumferential sealing surfaces (not visible in Figure 8) can be provided around the outlet openings 220. The small multi-chamber cartridge can have matching sealing surfaces circumferentially around the second outlet openings.

[0133] The adapter 201 can be frictionally connected to the first connecting element 212 and, with matching mating connecting elements, to the large multi-chamber cartridge. The mating connecting element and the first connecting element 212 can form a bayonet lock, which can be closed and opened by rotating the adapter 201 against the large multi-chamber cartridge. Alternatively, the first connecting element 212 can also be designed as a thread and the mating connecting element as a counter-thread.

[0134] The adapter 201 can be frictionally connected to the small multi-chamber cartridge using the second connecting element 214 and matching mating connecting elements. The mating connecting element and the second connecting element 214 can form a bayonet lock, which can be closed and opened by rotating the adapter 201 against the small multi-chamber cartridge. Alternatively, the second connecting element 214 can also be designed as a thread and the mating connecting element as a counter-thread.

[0135] Preferably, the mating connecting element of the large multi-chamber cartridge and the first connecting element 212 are connectable to each other by rotating in opposite directions compared to the mating connecting element of the small multi-chamber cartridge and the second connecting element 214. This ensures that rotating the adapter 201 toward the large multi-chamber cartridge and toward the small multi-chamber cartridge always simultaneously attaches or detaches the adapter 201 from both multi-chamber cartridges.

[0136] In each line 224, a passage with a pore filter (not shown) can be arranged, through which excess gas can escape during transfer. A pressure relief valve (not shown) can be arranged on the outside of each passage, wherein the pressure relief valve only opens when a gas in the lines 224 has an excess pressure compared to the ambient pressure (normal pressure) in the vicinity of the adapter 201. The pressure relief valve can be implemented, for example, by a simple lip valve. However, the pressure relief valve can also be omitted. On the side for connection to the large multi-chamber cartridge (the opposite side to the top view according to Figure 8), a projection 244 can be provided on the adapter 201, with which it can be ensured, through a corresponding and matching groove (not shown) on the large multi-chamber cartridge, that the adapter 201 can only be attached to the large multi-chamber cartridge in a specific position.On the side for connection to the small multi-chamber cartridge (the side shown in the top views according to Figure 8), a projection 246 can be provided on the adapter 201, with which a corresponding and matching groove (not shown) on the small multi-chamber cartridge can be used to ensure that the adapter 201 can only be attached to the small multi-chamber cartridge in a specific position. This ensures that the output components do not end up in the wrong cartridge chambers and that different output components are routed through the lines and can therefore react undesirably with the respective other output component in the lines and thereby close the lines or reduce their diameter and thus render the adapter 201 unusable.

[0137] Analogous to the process according to Figures 1 to 4, the adapter 201 according to Figure 8 can be attached to the large multi-chamber cartridge using the connecting element 212, so that the first outlet openings of the large multi-chamber cartridge are fluidly connected to the inlet openings 216 of the adapter 201. The sealing surfaces 228 of the adapter 201 preferably adjoin flush with corresponding sealing surfaces around the outlet openings of the large multi-chamber cartridge. Closure by the first connecting element 212 of the adapter 201 can create a frictional connection that creates a fluid-tight and stable connection. To achieve better sealing, additional circumferential seals (not shown) can be arranged in the area of ​​the sealing surfaces 228.Likewise, at the same time, or before or after, the adapter 201 can be attached to the small multi-chamber cartridge with the second connecting element 214, so that the second outlet openings of the small multi-chamber cartridge are fluidly connected to the outlet openings 220 of the adapter 201. The opposing sealing surfaces of the adapter 201, not visible in Figure 8, preferably adjoin flush with corresponding sealing surfaces around the outlet openings of the small multi-chamber cartridge. Closure by the connecting element 214 of the adapter 201 can create a frictional connection, resulting in a fluid-tight and stable connection. To achieve better sealing, additional circumferential seals can be arranged in the area of ​​the opposing sealing surfaces.

[0138] Subsequently, i.e., after the adapter 201 has been connected to the large multi-chamber cartridge and the small multi-chamber cartridge, the starting components are pressed out of the large multi-chamber cartridge through the first outlet openings of the large multi-chamber cartridge and the associated inlet openings 216 of the adapter 201 into the separate and distinct lines 224 of the adapter 201. The starting components then flow further and are guided through the lines 224 of the adapter 201 to the at least two outlet openings 220 of the adapter. In this process, the streams of the starting components can be redirected, in particular directed toward one another. At the same time, the flow velocity of the starting components can be accelerated by reducing the diameter of the lines 224 in the direction of the outlet openings 220.Due to the flows, the starting components are filled into the small multi-chamber cartridge through the outlet openings 220 of the adapter 201 and through the second outlet openings of the small multi-chamber cartridge connected to the outlet openings 220 of the adapter 201.

[0139] Excess air or gases can be expelled through the passages and pore filters to the outside of the adapter 201. During the extrusion, passage, and filling processes, the starting components do not come into direct contact with each other and therefore cannot react chemically with each other.

[0140] Figure 9 shows a schematic cross-sectional view of an alternative fourth adapter 301 according to the invention with lines 324 converging in the direction of outlet openings 320.

[0141] The adapter 301 can be constructed in sections as a cylindrical body. The adapter 301 has a first connecting element 312 for connecting to a large multi-chamber cartridge (not shown) and a second connecting element 314 for connecting to a small multi-chamber cartridge (not shown). The large multi-chamber cartridge and the small multi-chamber cartridge can be constructed analogously to the embodiment according to Figures 1 to 4 and can be connected to the adapter 301.

[0142] The adapter 301 can be constructed in two or three parts and have a first locking sleeve 313, a second locking sleeve 317, and a central body 315, wherein the first locking sleeve 313 and the second locking sleeve 317 can be plugged onto the central body 315. The first locking sleeve 313 and the second locking sleeve 317 can be rotatably mounted relative to the central body 315. The first locking sleeve 313 and the second locking sleeve 317 can be secured by injection molding techniques or suitable tongue-and-groove systems to prevent the first locking sleeve 313 and the second locking sleeve 317 from being pulled off or slipping off the central body 315 of the adapter 301.With the first locking sleeve 313 and the second locking sleeve 317, the connections of the adapter 301 to the large multi-chamber cartridge and the small multi-chamber cartridge can be locked and tightened separately from each other in order to enable a pressure-tight connection of the adapter 301 to the large multi-chamber cartridge and the small multi-chamber cartridge.

[0143] The first connecting element 312 and the second connecting element 314 can be formed by an outwardly projecting circular disk segment. The first connecting element 312 can be arranged on the first locking sleeve 313, and the second connecting element 314 can be arranged on the second locking sleeve 317. The first connecting element 312 and the second connecting element 314 can form part of two bayonet locks, each of which can be operated by rotating the first locking sleeve 313 and the second locking sleeve 317 against the central body 315 (analogous to the comparison of Figures 5 and 7 for the second embodiment).

[0144] The adapter 301 has two inlet openings 316 for connecting to first outlet openings of the large multi-chamber cartridge and two outlet openings 320 for connecting to second outlet openings of the small multi-chamber cartridge. Each of the inlet openings 316 is connected to one of the outlet openings 320 inside the adapter 301 by a line 324. The lines 324 run separately from one another inside the central body 315 of the adapter 301. In this embodiment, the inlet openings 316 have the same free line cross-section (the same diameter) as the outlet openings 320. The outlet openings 320 can be located (spatially) closer together than the inlet openings 316. The two lines 324 can run from the inlet openings 316 toward the outlet openings 320 in the direction of each other.In contrast to the adapter 1 according to Figures 1 to 4, the lines 324 of the adapter 301 according to Figure 9 are straight and do not have a converging conical shape.

[0145] The adapter 301 can be made of a plastic. Preferably, the adapter 301 can be transparent, at least in the area of ​​the lines 324. Preferably, the adapter 301, at least in the area of ​​the lines 324, is made of a material that is not wetted by the liquid or pasty materials to be mixed (the starting components contained in the large multi-chamber cartridge). It can also be provided that the lines 324 are coated with a material that is not wetted by the liquid or pasty materials to be mixed (the starting components). For a tight connection of the adapter 301 to the large multi-chamber cartridge, circumferential sealing surfaces 328 can be provided around the inlet openings 316. The large multi-chamber cartridge can have suitable sealing surfaces circumferentially around the first outlet openings.For a tight connection of the adapter 301 to the small multi-chamber cartridge, circumferential sealing surfaces 332 can be provided around the outlet openings 320. The small multi-chamber cartridge can have matching sealing surfaces circumferentially around the second outlet openings.

[0146] The adapter 301 can be frictionally connected to the large multi-chamber cartridge by means of the first connecting element 312 and matching mating connecting elements using the first locking sleeve 313. The mating connecting element and the first connecting element 312 can form a bayonet lock, which can be closed and opened by rotating the first locking sleeve 313 of the adapter 301 against the large multi-chamber cartridge and against the central body 315 of the adapter 301. Alternatively, the first connecting element 312 can also be designed as a thread and the mating connecting element as a counter-thread.

[0147] The adapter 301 can be frictionally connected to the small multi-chamber cartridge by means of the second connecting element 314 and matching mating connecting elements using the second locking sleeve 317. The mating connecting element and the second connecting element 314 can form a bayonet lock, which can be closed and opened by rotating the second locking sleeve 317 of the adapter 301 against the small multi-chamber cartridge and against the central body 315 of the adapter 301. Alternatively, the second connecting element 314 can also be designed as a thread and the mating connecting element as a counter-thread.

[0148] There is no need for counter-rotation when connecting the large multi-chamber cartridge and the small multi-chamber cartridge to the adapter 301 because the first locking sleeve 313 and the second locking sleeve 317 can be operated separately from each other.

[0149] In the area of ​​the sealing surfaces 332, a passage with a pore filter 340 can be arranged in each line 324, through which excess gas can escape during transfer. A pressure relief valve 342 can be arranged on the outside of each passage 340, whereby the pressure relief valve 342 only opens when the pressure of a gas in the lines 324 is higher than the ambient pressure (normal pressure) in the vicinity of the adapter 301. The pressure relief valve 342 can be implemented, for example, by a simple lip valve. However, the pressure relief valve 342 can also be omitted.

[0150] Analogous to the process according to Figures 1 to 4, the adapter 301 according to Figure 9 can be attached to the large multi-chamber cartridge with the first connecting element 312, so that the first outlet openings of the large multi-chamber cartridge are fluidly connected to the inlet openings 316 of the adapter 301. For this purpose, the first locking sleeve 313 can be rotated against the large multi-chamber cartridge and against the central body 315 of the adapter 301. The sealing surfaces 328 of the adapter 301 preferably adjoin corresponding sealing surfaces around the outlet openings of the large multi-chamber cartridge in a flush manner. The first locking sleeve 313 can be used to exert a force for pressure-tightly connecting the sealing surfaces 328 of the adapter 301 to the outlet openings of the large multi-chamber cartridge.By closing the adapter 301 with the first connecting element 312, a frictional connection can be created, resulting in a liquid-tight and stable connection. To achieve a better seal, additional circumferential seals can be arranged in the area of ​​the sealing surfaces 328. Likewise, at the same time, or before or after this, the adapter 301 can be attached to the small multi-chamber cartridge with the second connecting element 314, so that the second outlet openings of the small multi-chamber cartridge are fluidly connected to the outlet openings 320 of the adapter 301. For this purpose, the second locking sleeve 317 can be rotated against the small multi-chamber cartridge and against the central body 315 of the adapter 301. The sealing surfaces 332 of the adapter 301 preferably adjoin flush with corresponding sealing surfaces around the outlet openings of the small multi-chamber cartridge.The first locking sleeve 313 can exert a force to pressure-tightly connect the sealing surfaces 332 of the adapter 301 to the outlet openings of the small multi-chamber cartridge. The closure by the second connecting element 314 of the adapter 301 can create a frictional connection, creating a liquid-tight and stable connection. To achieve a better seal, additional circumferential seals can be arranged in the area of ​​the sealing surfaces 332.

[0151] Subsequently, i.e., after the adapter 301 has been connected to the large multi-chamber cartridge and the small multi-chamber cartridge, the starting components are pressed out of the large multi-chamber cartridge through the first outlet openings of the large multi-chamber cartridge and the associated inlet openings 316 of the adapter 301 into the separate and distinct lines 324 of the adapter 301. The starting components then flow further and are guided through the lines 324 of the adapter 301 to the at least two outlet openings 320 of the adapter. In this case, the flows of the starting components can be redirected, in particular directed towards one another. Due to the flows, the starting components are filled into the small multi-chamber cartridge through the outlet openings 320 of the adapter 301 and through the second outlet openings of the small multi-chamber cartridge connected to the outlet openings 320 of the adapter 301.

[0152] Excess air or gases can be expelled through the passages and the pore filters 340 to the outside of the adapter 301. During the extrusion, passage, and filling processes, the starting components do not come into direct contact with each other and therefore cannot chemically react with each other. The large multi-chamber cartridge and the small multi-chamber cartridge can then be detached from the adapter 301 by rotating the first locking sleeve 313 and the second locking sleeve 317, thereby opening them individually. Instead of two separate locking sleeves 313, 317, the adapter 301 could also be designed with a single locking sleeve, similar to the first and second embodiments, or without a locking sleeve, as in the third embodiment.The large multi-chamber cartridge and the small multi-chamber cartridge can then be sealed with closure caps (not shown, but analogous to closure cap 40 in Figure 1). The small multi-chamber cartridge can be attached to an application tip with a built-in static mixer (not shown) after being removed from the adapter 301.

[0153] The features of the invention disclosed in the foregoing description, as well as in the claims, figures and embodiments, may be essential both individually and in any combination for the realization of the invention in its various embodiments.

[0154] List of reference symbols

[0155] 1 , 101 , 201 , 301 adapters

[0156] 2 large multi-chamber cartridges

[0157] 3 small multi-chamber cartridges

[0158] 4, 5, 8, 9 cartridge chamber

[0159] 6, 7, 10, 11 outlet opening

[0160] 12, 14 connecting element

[0161] 13 Locking sleeve

[0162] 15 Central body

[0163] 16, 18 Entrance opening

[0164] 20, 22 Exit opening

[0165] 24, 26 Line

[0166] 28, 30, 32, 34 sealing surface

[0167] 36, 62 Counter-connecting element

[0168] 40 cap

[0169] 42 handle

[0170] 44 Connecting element

[0171] 48, 50 Starting components

[0172] 52, 56, 66, 70 discharge pistons

[0173] 54, 58, 68, 72 Sealing ring 60, 74 Bracket

[0174] 76 tappets

[0175] 112, 114 connecting element

[0176] 113, 313, 317 locking sleeve

[0177] 115, 315 Central body

[0178] 116, 118 entrance opening

[0179] 120, 122 outlet opening

[0180] 124, 126 line

[0181] 128, 130, 132, 134 sealing surface

[0182] 140, 340 pore filters

[0183] 142, 342 pressure relief valve

[0184] 144, 146, 244, 246 lead

[0185] 232, 328, 332 sealing surface

[0186] 212, 214, 312, 314 connecting element

[0187] 216, 316 entrance opening

[0188] 220, 320 outlet opening

[0189] 224, 324 line

[0190] 228, 328, 332 sealing surface

[0191] A cross-sectional plane

Claims

Patent claims 1. Adapter (1, 101, 201, 301) for transferring at least two liquid and / or pasty starting components (48, 50) from a large multi-chamber cartridge (2) with a large volume into a small multi-chamber cartridge (3) with a small volume, wherein the small volume of the small multi-chamber cartridge (3) is smaller than the large volume of the large multi-chamber cartridge (2), wherein the large multi-chamber cartridge (2) has at least two first cartridge chambers (4, 5) and at least two first outlet openings (6, 7), wherein each of the at least two first cartridge chambers (4, 5) is assigned one of the at least two first outlet openings (6, 7), wherein the small multi-chamber cartridge (3) has at least two second cartridge chambers (8, 9) and at least two second outlet openings (10, 11), wherein each of the at least two second cartridge chambers (8, 9) one of the at least two second outlet openings (10, 11) is assigned,wherein the at least two first outlet openings (6, 7) are spatially separated from one another and the contents of the at least two first cartridge chambers (4, 5) can be expelled separately from one another through the at least two first outlet openings (6, 7), and wherein the at least two second outlet openings (10, 11) are spatially separated from one another and the contents of the at least two second cartridge chambers (8, 9) can be expelled separately from one another through the at least two second outlet openings (10, 11), the adapter (1, 101, 201, 301) comprising a first connecting element (12, 112, 212, 312) for connecting to the large multi-chamber cartridge (2) and comprising a second connecting element (14, 114, 214, 314) for connecting to the small multi-chamber cartridge (3), the adapter (1, 101, 201, 301) having at least two inlet openings (16, 18, 116, 118, 216, 316) for connection to the at least two first outlet openings (6,7) of the large multi-chamber cartridge (2) and having at least two outlet openings (20, 22, 120, 122, 220, 320) for connection to the at least two second outlet openings (10, 11) of the small multi-chamber cartridge (3), wherein the at least two inlet openings (16, 18, 116, 118, 216, 316) are connected to the at least two outlet openings (20, 22, 120, 122, 220, 320) within the adapter (1, 101, 201, 301) by separate and separate lines (24, 26, 124, 126, 224, 324) in a liquid-permeable manner, and wherein the at least two inlet openings (16, 18, 116, 118, 216, 316) have a greater spatial distance from each other than the at least two outlet openings (20, 22, 120, 122, 220, 320) and / or at least one of the at least two inlet openings (16, 18, 116, 118, 216, 316) has a larger line cross-sectional area than the one connected to it by one of the separate and separate lines, (24, 26, 124, 126, 224, 324) connected at least two outlet openings (20, 22, 120, 122, 220, 320).

2. Adapter (1, 101, 201, 301) according to claim 1, characterized in that at least one of the separate and mutually separated lines (24, 26, 124, 126, 224, 324) has a line cross-section that continuously decreases in the direction of the at least two outlet openings (20, 22, 120, 122, 220, 320), preferably all of the separate and mutually separated lines (24, 26, 124, 126, 224, 324) have a line cross-section that continuously decreases in the direction of the at least two outlet openings (20, 22, 120, 122, 220, 320).

3. Adapter (1, 101, 201, 301) according to claim 1 or 2, characterized in that at least one of the separate and mutually separated lines (24, 26, 124, 126, 224, 324) has, at least in some regions, a line cross-section that tapers conically in the direction of the at least two outlet openings (20, 22, 120, 122, 220, 320), preferably all of the separate and mutually separated lines (24, 26, 124, 126, 224, 324) have, at least in some regions, a line cross-section that tapers conically in the direction of the at least two outlet openings (20, 22, 120, 122, 220, 320).

4. Adapter (1, 101, 201, 301) according to one of the preceding claims, characterized in that within the adapter (1, 101, 201, 301) the spatial distance of the separate and separated lines (24, 26, 124, 126, 224, 324) decreases, in particular decreases uniformly, in the direction of the at least two outlet openings (20, 22, 120, 122, 220, 320), wherein preferably the greatest spatial distance of the separate and separated lines (24, 26, 124, 126, 224, 324) is present at the at least two inlet openings (16, 18, 116, 118, 216, 316) and the smallest spatial distance of the separate and separated Lines (24, 26, 124, 126, 224, 324) are present at the at least two outlet openings (20, 22, 120, 122, 220, 320).

5. Adapter (1, 101, 201, 301) according to one of the preceding claims, characterized in that the first connecting element (12, 112, 212, 312) has a bayonet closure or a thread for connection to the large multi-chamber cartridge (2) and the second connecting element (14, 114, 214, 314) has a bayonet closure or a thread for connection to the small multi-chamber cartridge (3), wherein preferably the bayonet closure or the thread of the first connecting element (12, 112, 212, 312) is opposite to the bayonet closure or the thread of the second connecting element (14, 114, 214, 314).

6. Adapter (1, 101, 201, 301) according to one of the preceding claims, characterized in that the adapter (1, 101, 201, 301) for each of the at least two inlet openings (16, 18, 116, 118, 216, 316) has a sealing surface (28, 30, 128, 130, 328) or a sealing ring surrounding the respective inlet opening (16, 18, 116, 118, 216, 316) and the adapter (1, 101, 201, 301) for each of the at least two outlet openings (20, 22, 120, 122, 220, 320) has a sealing surface (28, 30, 128, 130, 328) surrounding the respective outlet opening (20, 22, 120, 122, 220, 320) has a circumferential sealing surface (32, 34, 132, 134, 232, 332) or a sealing ring.

7. Adapter (1, 101, 201, 301) according to one of the preceding claims, characterized in that the separate and mutually separated lines (24, 26, 124, 126, 224, 324) each have an inner wall, wherein the inner walls consist of a material or are coated with a material that does not chemically react with the liquid or pasty starting components (48, 50) of the large Multi-chamber cartridge (2) which are to be conveyed through the separate and separate lines (24, 26, 124, 126, 224, 324), and / or wherein the inner walls consist of a material or are coated with a material which is not wettable by the liquid or pasty starting components (48, 50) of the large multi-chamber cartridge (2) which are to be conveyed through the separate and separate lines (24, 26, 124, 126, 224, 324).

8. Adapter (1, 101, 201, 301) according to one of the preceding claims, characterized in that the adapter (1, 101, 201, 301) has at least one liquid-impermeable but at least gas-permeable passage under a pressure, through which excess air or gas can be forced out during transfer, wherein preferably at least one pore filter (140, 340) is arranged in the at least one passage and / or a pressure relief valve (142, 342) is arranged in or on the at least one passage.

9. Adapter (1, 101, 201, 301) according to one of the preceding claims, characterized in that the adapter (1, 101, 201, 301) has a central body (15, 115, 315) and at least one locking sleeve (13, 113, 313, 317) which is rotatably mounted against the central body and which partially or completely encloses the central body (15, 115, 315), wherein the separate and separate lines (24, 26, 124, 126, 224, 324) are arranged in the central body (15, 115, 315) and wherein the first connecting element (12, 112, 212, 312) and the second connecting element (14, 114, 214, 314) are arranged on the at least one locking sleeve (13, 113, 313, 317), wherein preferably the first connecting element (312) is arranged on a first locking sleeve (313) and the second connecting element (314) is arranged on a second locking sleeve (317).

10. Cartridge system comprising an adapter (1, 101, 201, 301) according to one of the preceding claims, the cartridge system further comprising a large multi-chamber cartridge (2) with a large volume and a small multi-chamber cartridge (3) with a small volume, wherein the small volume of the small multi-chamber cartridge (3) is smaller than the large volume of the large multi-chamber cartridge (2), wherein the large multi-chamber cartridge (2) has at least two first cartridge chambers (4, 5) and at least two first outlet openings (6, 7), wherein each of the at least two first cartridge chambers (4, 5) is assigned one of the at least two first outlet openings (6, 7), wherein the small multi-chamber cartridge (3) has at least two second cartridge chambers (8, 9) and at least two second outlet openings (10, 11), wherein each of the at least two second cartridge chambers (8, 9) one of the at least two second outlet openings (10, 11) is assigned,wherein the at least two first outlet openings (6, 7) are spatially separated from one another and the contents of the at least two first cartridge chambers (4, 5) can be expelled separately from one another through the at least two first outlet openings (6, 7), and wherein the at least two second outlet openings (10, 11) are spatially separated from one another and the contents of the at least two second cartridge chambers (8, 9) can be expelled separately from one another through the at least two second outlet openings (10, 11), wherein the large multi-chamber cartridge (2) can be connected to the first connecting element (12, 112, 212, 312) of the adapter (1, 101, 201, 301) in such a way that the at least two inlet openings (16, 18, 116, 118, 216, 316), of the adapter (1, 101, 201, 301) is connectable to the at least two first outlet openings (6, 7) of the large multi-chamber cartridge (2), and wherein the small multi-chamber cartridge (3) is connectable to the second connecting element (14, 114, 214, 314) of the adapter (1, 101, 201, 301) in such a way that the at least two outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301) are connectable to the at least two second outlet openings (10, 11) of the small multi-chamber cartridge (3), wherein preferably the large multi-chamber cartridge (2) is connected to the first connecting element (12, 112, 212, 312) of the adapter (1, 101, 201, 301) can be connected in such a way that the at least two inlet openings (16, 18, 116, 118, 216, 316) of the adapter (1, 101, 201, 301) can be connected in a liquid-conducting and liquid-tight manner to the at least two first outlet openings (6, 7) of the large multi-chamber cartridge (2),and wherein the small multi-chamber cartridge (3) is connectable to the second connecting element (14, 114, 214, 314) of the adapter (1, 101, 201, 301) in such a way that the at least two outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301) are connectable in a fluid-conducting and fluid-tight manner to the at least two second outlet openings (10, 11) of the small multi-chamber cartridge (3).

11. Cartridge system according to claim 10, characterized in that the large multi-chamber cartridge (2) has at least two first dispensing pistons (52, 56) and the small multi-chamber cartridge (3) has at least two second dispensing pistons (66, 70), wherein in each of the at least two first cartridge chambers (4, 5) on a side of the at least two first cartridge chambers (4, 5) opposite the at least two first outlet openings (6, 7), one of the at least two first dispensing pistons (52, 56) is arranged, and in each of the at least two second cartridge chambers (8, 9) on a side of the at least two second cartridge chambers (8, 9) opposite the at least two second outlet openings (10, 11), wherein the at least two first dispensing pistons (52, 56) are arranged in the direction of the associated at least two first outlet openings (6, 7) are movably mounted,wherein the at least two second discharge pistons (66, 70) are movably mounted in the direction of the associated at least two second outlet openings (10, 11), wherein preferably between the at least two first discharge pistons (52, 56) and the at least two first outlet openings (6, 7) in the at least two first cartridge chambers (4, 5) of the large multi-chamber cartridge liquid or pasty starting components (48, 50) for producing a dental material are contained, wherein particularly preferably, liquid or pasty starting components (48, 50) for producing a dental material are contained between the at least two second discharge pistons (66, 70) and the at least two second outlet openings (10, 11) in the at least two second cartridge chambers (8, 9) of the small multi-chamber cartridge.

12. Cartridge system according to claim 10 or 11, characterized in that the cartridge system has a closure cap (40) for closing the at least two first outlet openings (6, 7) of the large multi-chamber cartridge (2), wherein the closure cap (40) is connectable to a connecting element (36) of the large multi-chamber cartridge (2), wherein the adapter (1, 101, 201, 301) on the large multi-chamber cartridge (2) is also connectable to the connecting element (36), wherein preferably the cartridge system has a closure cap for closing the at least two second outlet openings (10, 11) of the small multi-chamber cartridge (3), wherein the closure cap is connectable to a connecting element (62) of the small multi-chamber cartridge (3), wherein the adapter (1, 101, 201, 301) can be connected to the small multi-chamber cartridge (3), and / or the cartridge system has a discharge pipe containing a static mixer,wherein the discharge pipe is connectable to the connecting element (62) of the small multi-chamber cartridge (3), wherein the adapter (1, 101, 201, 301) on the small multi-chamber cartridge (3) is also connectable to the connecting element (62).

13. Method for transferring at least two liquid and / or pasty Starting components (48, 50) of a dental material from a large multi-chamber cartridge (2) with a large volume into a small Multi-chamber cartridge (3) with a small volume, wherein the small volume of the small multi-chamber cartridge (3) is smaller than the large volume of the large multi-chamber cartridge (2), wherein the large multi-chamber cartridge (2) has at least two first cartridge chambers (4, 5) and at least two first outlet openings (6, 7), wherein each of the at least two first cartridge chambers (4, 5) is assigned one of the at least two first outlet openings (6, 7), wherein the small multi-chamber cartridge (3) has at least two second cartridge chambers (8, 9) and at least two second outlet openings (10, 11), wherein each of the at least two second cartridge chambers (8, 9) has one of the at least two second outlet openings (10, 11) is assigned, wherein the at least two first outlet openings (6, 7) are spatially separated from one another and the contents of the at least two first cartridge chambers (4, 5) can be expelled separately from one another through the at least two first outlet openings (6, 7), and wherein the at least two second outlet openings (10, 11) are spatially separated from one another and the contents of the at least two second cartridge chambers (8, 9) can be expelled separately from one another through the at least two second outlet openings (10, 11) or through which the starting components (48, 50) for producing a dental material can be filled into the at least two second cartridge chambers (8, 9), the method comprising the steps: Attaching an adapter (1, 101, 201, 301) to the large multi-chamber cartridge (2) and to the small multi-chamber cartridge (3), wherein the at least two first outlet openings (6, 7) of the large multi-chamber cartridge (2) are connected in a fluid-conducting manner to at least two inlet openings (16, 18, 116, 118, 216, 316) of the adapter (1, 101, 201, 301) and the at least two second outlet openings (10, 11) of the small multi-chamber cartridge (3) are connected in a fluid-conducting manner to at least two outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301), wherein the inlet openings (16, 18, 116, 118, 216, 316) are connected to the at least two outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301) within the adapter (1, 101, 201, 301) by separate and mutually separated lines (24, 26, 124, 126, 224, 324) in a liquid-permeable manner; Extruding at least two starting components (48, 50) from the at least two first cartridge chambers (4, 5) of the large multi-chamber cartridge (2) through the at least two first outlet openings (6, 7) of the large multi-chamber cartridge (2) and the associated at least two inlet openings (16, 18, 116, 118, 216, 316) of the adapter (1, 101, 201, 301) into the separate and mutually separated lines (24, 26, 124, 126, 224, 324) of the adapter (1, 101, 201, 301); Passing the at least two output components (48, 50) through the separate and mutually separated lines (24, 26, 124, 126, 224, 324) of the adapter (1, 101, 201, 301) to the at least two outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301); Filling the at least two starting components (48, 50) through the at least two outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301) and through the at least two second outlet openings (20, 22, 120, 122, 220, 320) of the adapter (1, 101, 201, 301) connected Outlet openings (10, 11) of the small multi-chamber cartridge (3) into the at least two second cartridge chambers (8, 9) of the small multi-chamber cartridge (3); wherein the at least two starting components (48, 50) do not come into direct contact with one another during the pressing out, passing through, and filling processes.

14. The method according to claim 13, characterized in that when the at least two output components (48, 50) are passed through the adapter (1, 101, 201, 301), the flows of the at least two output components (48, 50) are moved towards one another and / or the flow velocity of at least one of the flows of the at least two output components (48, 50) is accelerated in the direction of at least one of the at least two outlet openings (20, 22, 120, 122, 220, 320) due to a reduction in the line diameter of at least one of the separate and mutually separated lines (24, 26, 124, 126, 224, 324) of the adapter (1, 101, 201, 301).

15. The method according to claim 13 or 14, characterized in that an adapter (1, 101, 201, 301) according to one of claims 1 to 9 is used as the adapter (1, 101, 201, 301) or a cartridge system according to one of claims 10 to 12 is used to implement the method.

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