EP2384820A1 - Cartridge system and application tube for such a cartridge system - Google Patents

Abstract

The system (1) has cartridges (30) arranged parallel to each other, and a mixing space (20) with an outlet opening (22). Each cartridge comprises an opening (40) in a cartridge wall (32). A feed plunger (62) is provided for expelling starting components of a mixing ware out of the cartridges through the openings. A closure (60) is arranged in the mixing space so as to close the openings of the cartridges in an initial position, where the openings are partially opened to the mixing space in an end position of the closure. The closure is shifted from the initial position to the end position.

Description

The invention relates to a cartridge system for mixing and applying a mixed material, in particular a medical cement, comprising two mutually parallel cartridges and a mixing chamber with an outlet opening, wherein the cartridges each comprise at least one opening in the cartridge walls, which connect the cartridges with the mixing chamber, and the cartridges each comprise a delivery piston for expelling output components of the mix from the cartridges through the openings, and a discharge tube for such a cartridge system.

Cartridge systems for mixing and applying a mix may consist of several components and are intended to ensure safe storage and secure closure for components in at least two cartridges prior to use. Immediately before the application of the mix, the cartridge system should be open safely and quickly, with a synchronous opening of the individual cartridges is desirable.

Reactive pasty two- or multi-component systems must be stored separately after their preparation until application in order to prevent premature, unintentional reactions of the components. Cartridge systems for the application of pasty two- or multi-component systems have been known for decades. Exemplary selenium for the documents CH 669 164 A5 . EP 0 807102 A1 . EP 0 236129 A2 . DE 3 440 893 A1 . US 4,890,308 A . US 2009/062808 A1 . EP 0 787 535 A1 . WO 20061005 206 A1 . EP 0 693 437 A1 . EP 0 294 672 A . EP 0 261 466 A1 and EP 2 008 707 A1 called. The mixing of pasty two- or multi-component systems takes place directly during application, usually with the aid of static mixers. Examples are the documents GB 1,188,516 A . US 2,125,245 A . US 5,968,018 A . US 4,068,830 A . US 2003/179648 A1 . EP 0 664 153 A1 and EP 0 289 882 A1 cited. After filling the cartridges with reactive pastes need these remain safely closed until application. Movable pistons, which also serve to discharge the cartridge, usually seal off the cartridge bottoms. For closing the cartridge system head of the cartridge system, a number of solutions have been proposed.

A simple but very effective principle is to close the cartridge head with a rotatable shutter ( EP 0 431 347 A1 , DE 2 017 292 A1 . US 3,215,298 A ). The closure is unscrewed before application. Subsequently, a discharge tube is screwed into a thread on the cartridge head or fixed with a, a thread nachbildendem pin system. The disadvantage of this is that the user has to perform twice rotational movements until the paste material can be expelled. Furthermore, it may happen that the closure is unscrewed and the discharge tube is placed later. Between the opening of the cartridges and the insertion of the dispensing tube, especially when volatile substances are contained in the pastes, components of the pastes may evaporate.

The closure currently used very frequently, especially in the adhesives and sealants industry, is based on the fact that the wall material of the cartridge is made very thin at the cartridge head, so that this wall can easily be pierced. When piercing particles are removed from the wall, which thereby enter the pasty material.

The back of the cartridges is usually closed by moving pistons designed to expel the pastes during application. For moisture and air sensitive pastes aluminum cartridges can be used, which are closed with plastic piston and are pressed over the sealing aluminum cylinder, which are closed on one side, for sealing. During the application of the pastes, the aluminum cylinder, which is closed on one side, is moved together with the piston with the help of extrusion guns to the front in the direction of the cartridge head and the paste is expelled. In medical applications, however, contact of pastes with aluminum surfaces can be problematic.
When using cartridge systems for sterile pasty medical devices, it is necessary that not only the pastes but also the cartridges and the secondary packaging are provided in sterile form to the medical user. For example, after aseptic filling of the previously sterilized cartridges, these can be transferred directly into a sterile packaging. Furthermore, it may make sense for certain products to sterilize the surfaces of the filled cartridges together with the packaging after the packaging has been completed. In addition to gamma sterilization, which can not be used with polymerizable paste systems, it is possible to sterilize ethylene oxide with the gas.

A problem with paste systems containing monomers with high vapor pressure, however, is in such a sterilization with gas, that after the actual sterilization, in the removal of the residual ethylene oxide by the action of vacuum, some of the monomers in the cartridges evaporated, while a gas phase form in the cartridges and thus can exert pressure against the pistons. This means that the pistons are undesirably moved in the direction of the cartridge bottoms and in extreme cases are expelled from the cartridges so that the pastes can flow out.

For decades, polymethyl methacrylate bone cements have been used in medicine for the permanent mechanical fixation of total joint endoprostheses. These are based on powder-liquid systems. Polymethyl methacrylate bone cements based on the use of cement pastes have also recently been proposed ( DE 10 2007 050 782 A1 . DE 10 2008 030 312A1 . DE 10 2007 052 116 A1 ). For such cements so far no suitable cartridge systems have been proposed.

When using bone cements for fixation of total joint endoprostheses, it must always be borne in mind that the surgical staff are under pressure during these operations. In medical applications of cartridge systems for the application of paste-like polymethyl methacrylate bone cements, these should therefore be designed in principle so that they are largely resistant to user error and can be operated quickly and safely even in stressful situations.

An essential constituent of pasty polymethyl methacrylate bone cements is the monomer methyl methacrylate. This monomer evaporates easily and has a fairly high vapor pressure at room temperature. When using methylmethacrylate-containing pastes, it is therefore essential to note that in the event of vacuum, as in the case of degassing in the context of ethylene oxide sterilization, the cartridge pistons in the cartridges are moved through the vaporizing methyl methacrylate and in extreme cases can be expelled from the cartridges.

A generic cartridge system is based on the packaging of pasty multi-component systems in Schlauchbeutein ( WO 2010/006455 A1 ). The sealed tubular bags are introduced into cartridges. Tubular bags have the advantage that they are suitable for packaging pastes containing volatile components. Tubular bags made of composite materials, such as aluminum composite bags, are particularly suitable for this purpose. The opening of the tubular bag is made by cutting, which rotate when the dispensing tube is screwed in. As the blades rotate, the bags are cut open to provide openings in the cartridges for dispensing the contents. The pasty bag contents are then squeezed through these openings in the cartridges in the direction of the static mixer.

The disadvantage of this is that the packaging of pasty materials in tubular bags and in addition in cartridges is very costly and reserved only for special applications. For many applications, especially in the medical field, it is also problematic that parts of the cut tubular bag can detach and then get into the pasty components and so can contaminate the mix.

The object of the invention is thus to provide a cartridge system that is simple and inexpensive to manufacture, but at the same time ensures a safe and easy opening of the cartridges. A secure storage and a secure closure for paste-like components in at least two cartridges before their use should be ensured. Immediately prior to the application of the pastes, the cartridge system should be able to be opened safely and quickly with as little effort as possible in order to enable simple application during operations and thus reduce or overcome the problems of the previous cartridge systems and their closure systems. So it should be developed a closure system, which closes cartridges for several components safely and allows a quick uncomplicated opening of the individual cartridges. When placing the dispensing tube as possible operator errors of the user should be avoided. These objects are achieved by arranging in the mixing chamber a closure displaceably arranged therein such that it closes the openings of the cartridges in a starting position and that the openings to the mixing space are at least partially opened in an end position of the displaceable closure, wherein the displaceable closure of the starting position is displaceable to the end position.

It can be provided that the mixing chamber is a hollow body, in particular a hollow cylinder, with hollow body walls, wherein the openings in the cartridges extend through the hollow body wall into the mixing space.

It is also proposed that the mixing space between the cartridges is arranged, in particular such that the cartridge walls are partially executed with the hollow body wall in one.

The invention also proposes that the mixing space is arranged parallel to the cartridges.

It can be provided that a movable rod is arranged parallel to the delivery piston in the interior of the mixing chamber, which is fixedly connected to the delivery piston via at least one web and / or a plate, wherein the rod on the outlet opening side facing a locking means and in the mixing chamber a counter-locking means is mounted, which cooperates with the locking means of the rod such that a movement of the rod out of the mixing chamber and thus the delivery piston from the cartridges out clearly difficult, in particular prevented.

It can further be provided that the cartridge walls and / or the mixing chamber walls have at least one slot starting at the bottom of the cartridge, which is arranged parallel to the cartridge axis, wherein the width of the slots or for receiving the webs or sufficient and the length of the or Slits in particular until at least half of the cartridge length ranges.

Furthermore, the invention proposes that the outlet opening is arranged in a cartridge system head, and the cartridge system head comprises a fastening means for fastening a dispensing tube, in particular on the inside of the cartridge system head, preferably a thread or a plurality of pins.

It can be provided that in the mixing chamber a stop, preferably in the form of pins or webs, is arranged, which limits the movement of the displaceable closure towards the center of the mixing chamber and thereby the end position of the displaceable closure is defined.

It is also proposed that the displaceable closure is arranged in press fit in the mixing chamber.

It can also be provided that the displaceable closure is displaceable in the longitudinal direction of the mixing space.

The invention also proposes that the delivery pistons seal the cartridges tightly.

It can also be provided according to the invention that sealing means, in particular sealing rings, are arranged at the openings of the cartridges to the mixing chamber. The sealing means are intended to improve the sealing effect of the displaceable closure with respect to the openings in the cartridges, if the sealing effect of the displaceable closure by the interference fit should not be sufficient.

It can be provided that the sealing means are arranged around the openings to the mixing space between the inner wall of the mixing chamber and the displaceable shutter in the starting position.

Advantageous embodiments of the cartridge system may be distinguished by the fact that the displaceable closure comprises an extension in the form of a hollow body, in which openings are provided in the hollow body walls bearing against the side walls of the mixing space.

It can also be provided that the displaceable closure is a compact body or a hollow body, in particular a hollow cylinder, with a closed side.

Alternatively, it may be provided that the displaceable closure is a cavity body which is open on both sides and a discharge pipe is displaceably arranged in the interior of the mixing space, wherein the discharge pipe is an open discharge pipe tip facing the outlet opening or extending out of it and an extension facing toward the cartridge bottom which extends in the direction of the Cartridge bottom is completely closed, comprises and the extension comprises openings in the side walls facing the cartridge walls, wherein in the interior of the dispensing tube, a continuous connection extends from the openings to the dispensing tube tip, in which preferably a static mixer is arranged, wherein the Outer diameter of the extension is less than or equal to the inner diameter of the mixing chamber and greater than the inner diameter of the closure, while the rest of the lying inside the mixing chamber discharge pipe has a smaller outer diameter than the inner diameter of the closure.

It can be provided that a stop in the cartridge system head is provided, in particular in the region of the outlet opening, and that the delivery piston and / or the discharge pipe can be acted upon by compressed air or compressed air.

With the invention it is also proposed that a plate and / or at least one web is firmly connected on the bottom side with the delivery piston, and a locking means is connected to the plate and / or the at least one web, wherein the locking means extends into the mixing chamber and there in a Gegenarretierungsmittel engages, so that movement of the plate and / or the at least one web and the delivery piston is blocked in the direction of the cartridge bottom and in the interior of the mixing chamber a Entarretiervorrichtung is provided which is fixedly connected to the sliding closure, so that when moving the displaceable closure into its Endpostition, a release of the locking means is carried out, so that a movement of the plate and / or the at least one web and the delivery piston in the direction of the cartridge bottom is possible.

The invention also relates to a dispensing tube for such a cartridge system, wherein the dispensing tube relative to a dispensing tube tip of the dispensing tube comprises an extension whose diameter is smaller than the inner diameter of the mixing chamber and which is adapted to the sliding closure upon insertion of the dispensing tube into the cartridge system head of the cartridge system to move, so that the openings of the cartridges are open at least partially.

It can be provided that the extension is a hollow body, in particular a hollow cylinder, with openings, wherein in the ready position of the dispensing tube in the cartridge system, the openings of the cartridges of openings in the extension are at least partially covered, so that the interiors of the cartridges with the Mixing room are connected through the openings.

It can also be provided that the discharge tube comprises a fastening means, preferably pins or a thread, in particular an external thread.

It can also be provided that the discharge pipe comprises a static mixer. Finally, it is proposed that the discharge pipe is fixedly connected to the sliding closure, so that both form a common part of the Kartsuchenssystems.
This cartridge system and the associated closure system of the cartridge system is based on the surprising finding that a reliable and easy-to-use opening of the cartridge system is made possible by means of a movable shutter, without having to destroy a component such as the cartridge wall when opening the cartridges, so that no contamination of the components to be mixed or of the mixed material with the material of the component is to be feared. This allows a secure closure of the multi-component cartridges and a fast, uncomplicated, simultaneous opening of the individual cartridges of the system, The placement of the discharge tube causes a forced, synchronous opening of the cartridges, so that the cartridges are opened only when the dispensing tube is mounted, causing potential operator error of the user be avoided.

Such a cartridge system and such a closure system can be made entirely from inexpensive plastic injection molded parts. The cartridge system makes it possible to move the pistons synchronously in the cartridges when force is applied in the direction of the cartridge system head and thus to evenly press out the pastes so that the mixing ratio of the pastes to one another is ensured.

A further simplification and ensuring the operability of such a cartridge system results from the fact that a movement of the delivery piston can be reliably prevented under the influence of vacuum.

For the purposes of the present invention, the mixing space is to be understood as meaning the area which is located between the at least two cartridges and the areas adjacent thereto. It extends from the cartridge bottom, ie the rear, bottom-side part of the cartridge system, to the outlet opening on the cartridge system head on the front side of the cartridge system, ie also includes the interior of the cartridge system head. Not everywhere in the mixing room, the mixture of the starting components of the mix must be done, but only in some areas of the same. A mixing chamber which is connected with hoses to the cartridges, and therefore the mixing chamber is not in the geometrical sense exactly between the cartridges is also according to the invention.

Under a sliding closure in the context of the present invention, a closure is to be understood, which is initially in the initial position by a fixed connection to the walls of the gap, for example, by thin bridges, if this solid compound has predetermined breaking points, which at a force Break on the closure and thus allow the movement of the closure under force. It is proposed that the fixed connection or the fixed connections with the predetermined breaking points are provided from the openings of the cartridges in the direction in which the closure, when opening moves to an entry of particles of the fractures into the mix or into the starting components of the mix. The end position in the sense of the invention is not to be understood as a final end position. For example, it would be conceivable to provide that the displaceable closure can also be moved from the end position to the starting position and then the cartridges of the cartridge system can be refilled. As a result, the cartridge system is reusable. Likewise, then, the starting position, like the end position, is to be understood as one of at least two positions into which the displaceable shutter is displaceable.

Figur 1:

eine Querschnfttansicht in Längsrichtung eines erfindungsgemäßen Kartuschensystems;

Figur 2:

eine Aufsicht auf die Vorderseite eines erfindungsgemäßen Kartuschensystems mit der Auslassöffnung nach Figur 1;

Figur 3:

eine Aufsicht auf den Kartuschenboden eines erfindungsgemäßen Kartuschensystems nach Figur 1;

Figur 4:

eine Querschnittansicht eines Kartuschensystems nach Figur 1 entlang des Schnitts A-A in Figur 1;

Figur 5:

eine Seitenansicht eines erfindungsgemäßen Kartuschensystems nach Figur 1;

Figur 6:

eine Aufsicht auf einen Kartuschenboden eines zweiten erfindungsgemäßen Kartuschensystems;

Figur 7:

ein Austragsrohr für ein erfindungsgemäßes des Kartuschensystem;

Figur 8:

eine Querschnittansicht in Längsrichtung eines erfindungsgemäßen Austragsrohrs nach Figur 7;

Figur 9:

den vorderen Teil eines dritten erfindungsgemäßen Kartuschensystems mit eingesetztem Austragsrohr in Querschnittansicht;

Figur 10:

ein viertes erfindungsgemäßes Kartuschensystem mit integriertem Austragsrohr in Querschnittansicht;

Figur 11:

ein fünftes erfindungsgemäßes Kartuschensystem in Querschnittansicht;

Figur 12:

einen verschiebbaren Verschluss für ein Kartuschensystem nach Figur 11 in perspektivische Ansicht;

Figur 13:

ein Austragsrohr für ein Kartuschensystem nach Figur 11 in Seitenansicht:

Figur 14:

ein sechstes erfindungsgemäßes Kartuschensystem mit integriertem Austragsrohr in Querschnittansicht;

Figur 15:

einen verschiebbaren Verschluss mit integriertem Austragsrohr für ein Kartuschensystem nach Figur 14 in Seitenansicht; und

Figur 16:

ein siebtes erfindungsgemäßes Kartuschensystem mit einer am Verschluss angebrachten Entarretier-Vorrichtung in Querschnittansicht.

Embodiments of the invention will be explained below with reference to sixteen diagrammatically illustrated drawings. Showing:

FIG. 1:

a Querschnftt view in the longitudinal direction of a cartridge system according to the invention;

FIG. 2:

a plan view of the front of a cartridge system according to the invention with the outlet opening after FIG. 1 ;

FIG. 3:

a plan view of the cartridge bottom of a cartridge system according to the invention FIG. 1 ;

FIG. 4:

a cross-sectional view of a cartridge system according to FIG. 1 along the section AA in FIG. 1 ;

FIG. 5:

a side view of a cartridge system according to the invention according to FIG. 1 ;

FIG. 6:

a plan view of a cartridge bottom of a second cartridge system according to the invention;

FIG. 7:

a dispensing tube for a cartridge system according to the invention;

FIG. 8:

a cross-sectional view in the longitudinal direction of a discharge pipe according to the invention after FIG. 7 ;

FIG. 9:

the front part of a third cartridge system according to the invention with inserted discharge tube in cross-sectional view;

FIG. 10:

a fourth invention cartridge system with integrated discharge tube in cross-sectional view;

FIG. 11:

a fifth cartridge system according to the invention in cross-sectional view;

FIG. 12:

a sliding closure for a cartridge system after FIG. 11 in perspective view;

FIG. 13:

a discharge pipe for a cartridge system according to FIG. 11 in side view:

FIG. 14:

a sixth cartridge system according to the invention with integrated discharge tube in cross-sectional view;

FIG. 15:

a sliding closure with integrated discharge tube for a cartridge system according to FIG. 14 in side view; and

FIG. 16:

A seventh cartridge system according to the invention with a locking device mounted on the locking device in cross-sectional view.

FIG. 1 shows a cross-sectional view of a cartridge system (1) according to the invention with a mixing chamber (20) which is bounded by mixing chamber walls (21) and in an outlet opening (22) opens. The mixing chamber (20) extends in the region between two cartridges (30) and is designed as a cylindrical hollow body. The cartridges (30) are bounded by cartridge heads (31), cartridge walls (32) and a cartridge bottom (33). Inside the cartridges (30) are the starting components (not shown) for a mix to be mixed. In the cartridge walls (32) and the mixing space walls (21) are openings (40) which connect the interior of the cartridge (30) with the interior of the mixing space (20). This cartridge system (1) is thus suitable for mixing a mixed material consisting of two components.

The outlet opening (22) is formed in a cartridge system head (50) having on the inside a Befestigungsmütel (51) in the form of a thread or in the form of pins, which can also form a thread.

A displaceable closure (60) in the form of a solid cylinder is press-fitted in the upper, that is, in the end of the mixing space (20) facing the outlet opening (22). The slidable closure (60) closes the openings (40) which connect the interior of the cartridges (30) to the interior of the mixing space (20). However, the displaceable closure (60) can also have a closed lateral surface.

The cartridges (30) are closed in the direction of the cartridge bottoms (33) with delivery pistons (62). The longitudinal direction of the cartridges (30) displaceable delivery piston (62) may be equipped with standard wiper lips and seals to ensure a tight closure of the cartridges (30).

At the bottom of the cartridge (33), the delivery pistons (62) are interconnected by a web (65) or a plate (not shown). An additional web (66) which extends through the mixing chamber walls (21) and through the cartridge walls (32) may be provided inside the cartridge system (1).

In addition, a rod (70) is fixedly connected to the webs (65, 66) and projects into the end of the mixing chamber (20) facing the cartridge bottoms (33). At the top of the rod (70) locking means (71) are mounted. On the inner walls (21) of the mixing chamber (20) counter-locking means (72) are mounted, which engage in the latching means (71). The counter-latching means (72) are made of a flexible material, such as rubber. The locking means (71) may be made of a normal plastic. When the rod (70) is inserted so deeply into the mixing space (20) that the latching means (71) engage in the counter-latching means (72), movement of the rod (70) out of the mixing space (20) is prevented. At the same time, however, it is readily possible to push the rod (70) deeper into the mixing chamber (20).

In the mixing chamber (20) is thus the rod (70) which is arranged in the longitudinal direction of the delivery piston (62) so that it is fixed to the webs (65) with one end, and a length of at least the length of the delivery piston ( 62). It is essential that the rod (70) is toothed on the side facing the cartridge head (31). The teeth are oriented so that the tips of the teeth point towards the bottom of the cartridge (33). The rod (70) has a cross section smaller than the cross section of the mixing chamber (20).

At the end of the mixing chamber (20), on the side facing the cartridge bottom (33), a flexible detent (72) is arranged, which has a cross section smaller than or equal to the toothed rod (70). This means that the toothed rod can engage in this detent (72). The detent (72) is arranged so that only a movement of the toothed rod (70) in the direction of the cartridge head (31) is possible. A backward movement in the direction of the cartridge bottom (33) is not possible.

By the toothed rod (70) and the detent (72), the position of the delivery piston (62) in the cartridges (30) is fixed, so that a backward movement of the delivery piston (62) from the cartridges (30) even under the action of vacuum safely prevented.

The slidable closure (60) may be displaced towards the cartridge bottom (33) by the application of a force through the outlet opening (22). The force may be applied by cinching a suitable discharge tube (not shown) into the outlet opening (22). A stop (74), which is mounted in the form of pins on the inner walls (21) of the mixing chamber (20), prevents the sliding closure (60) are inserted deeper than to the stop (74) in the mixing chamber (20) can. As a result, the stopper (74) defines the end position of the sliding shutter (60).

In order to allow movement of the webs (65, 66) through the mixing chamber walls (21) and the cartridge walls (32) facing the mixing space (20), they are provided with a slot (75) extending from the cartridge bottoms to the end of the slot (75). 76) in the interior of the cartridge system (1). Through this slot (75) is a movement of the webs (65, 66) readily possible.

FIG. 2 shows a plan view of such a cartridge system (1) on the cartridge system head (50). A look into the outlet opening (22) shows the mixing chamber walls (21), the fastening means (51) and in the middle the displaceable closure (60). On both sides of the cartridge system head (50) are the cartridge heads (31) of the underlying cartridges (30) (in FIG. 2 not recognizable) attached.

FIG. 3 shows a plan view of such a cartridge system (1) from the direction of the cartridge bottom (33). The mixing space (20) bounded by the mixing space walls (21) is flanked on both sides by the cartridges (30), of which only the cartridge walls (32) and the butts (62) can be seen in this direction open mixing chamber (20) is the rod (70) which projects into the interior of the mixing chamber (20). The rod (70) and the delivery piston (62) are fixedly connected to each other by the web (65). In order to allow movement of the web (65) into the interior of the cartridge system (1), a slot (75) is provided in the walls (21, 32) of the mixing chamber (20) and the cartridges (30).

FIG. 4 shows a cross-sectional view of such a cartridge system (1) along the section (AA) in FIG. 1 , Between the two cartridges (30), through the delivery piston (62) and the Cartridge walls (32) are located, there is the mixing chamber (20) which is bounded by the mixing chamber wall (21). The delivery pistons (62) are constructed as hollow cylinders closed on both sides. Inside the mixing chamber (20), the rod (70) is arranged. The rod (70) and the delivery pistons (62) are interconnected by the web (66). In which the cartridges (30) with the mixing chamber (20) connecting walls (21, 32) slots (75) are provided which allow movement of the web (66) and the web (65) inside the cartridge system (1).

FIG. 5 shows a side view of a cartridge system. Between the two cartridges (30), the mixing chamber (20) is arranged Actually, only the mixing chamber walls (21) or the cartridge walls (32) would be visible from the outside. On the head side of the cartridge system (1) of the cartridge system head (50) is arranged, while the cartridge bottom (33) of the web (65) is arranged.

FIG. 6 shows a plan view of a cartridge bottom of an alternative cartridge system for mixing a mixed material consisting of three components. For this purpose, the cartridge system comprises three cartridges, of which only the cartridge walls (132) and the delivery pistons (162) can be seen from the direction of the cartridge bottom. Between the cartridge walls (132) is the mixing chamber (120), in the middle of which a rod (not shown) is arranged. The rod and the delivery piston (162) are fixedly connected to each other with webs (165). The entire cartridge system is enclosed by an additional sheath (179).

All described embodiments can be easily transferred to a cartridge system with three, four or more cartridges for mixing a mix with three, four or even more components. When using very many components, the cartridges are expediently not to be designed with a cylindrical shape.

FIG. 7 shows a discharge tube (80) for an inventive cartridge system (1) in side view. At the upper end of the discharge tube (80) is the discharge tube tip (81), which serves to apply a mixed mixture. Underneath is an external thread (82), with which the discharge pipe (80) can be screwed into the internal thread (51) of the cartridge system (1). Openings (85) are provided in an extension (86) disposed thereunder.

The extension (86) has the same or a smaller outer diameter than the diameter of the mixing chamber (20). Thus, when the dispensing tube (80) is rotated into the cartridge system head (50), the extension (86) beyond the scalp system head (50) can penetrate into the mixing chamber (20), moving the slidable closure (60) deeper into the mixing chamber (FIG. 20). As a result, the openings (40) are opened to the mixing chamber (20). The extension (86) is formed as a hollow cylinder and the openings (85) serve to not block the starting components to be mixed which pass through the openings (40) in the cartridge walls (32). The materials to be mixed thus pass both the openings (40) and the openings (85).

FIG. 8 shows a cross-sectional view of such a discharge tube (80) after FIG. 7 , In addition to the dispensing tube tip (81), the external thread (82) and the extension (86) in the form of a hollow cylinder, a static mixer (88) is provided inside the dispensing tube (80).

However, an extension (86) could also be formed by a rod terminating in a tee formed, for example, as an extension of the central axis of the static mixer (88). Such an extension (86) would then require no additional openings (85). Also, extension of the static mixer (88) beyond the thread (82) could serve as an extension (86).

FIG. 9 shows the upper (cartridge head side) part of a second cartridge system according to the invention with built-in discharge pipe (280). The discharge tube (280) is completely installed in the cartridge system head (250), which can be seen from the fastening means (251) of the cartridge system head (250), which are formed here by pins, in the attachment means (282) of the discharge tube (280 ) to grab. In this installed state, the extension (286) designed as a hollow body with openings (285) extends into the mixing space (220) so deeply that the displaceable closure (260) moves further away from its starting position into the interior of the cartridge system along the mixing space (220). is moved.

The displaceable closure (260) is constructed here as a hollow cylinder closed on one side. Thus, neither the mix, nor the output components can get into the cartridge bottom side part of the mixing chamber (220), the displaceable closure (260) on the discharge pipe (280) facing side is closed. It would also be possible to do that End of the extension (286) to construct such that it closes the complete cross section of the mixing chamber (220).

The end position of the slidable closure (260) is defined by a stop (274) in the form of a ring inside the mixing space (220). The cartridges (230) are defined by the cartridge walls (232) and the cartridge heads (231), as well as by delivery pistons (in FIG. 9 not limited).

If pressure is exerted on the delivery pistons (not in force) when the delivery tube (280) is inserted, starting components for the mixture stored in the cartridges (230) are forced through the openings (240, 285) into the mixing space (220). In the mixing chamber (220), the starting components are mixed, thus producing the mix. Mixing of the mix can be done by a static mixer (in FIG. 9 notgt) in the discharge pipe (280) are reinforced. Finally, the mixed mix passes through the dispensing tube tip (281) from the cartridge system and can be applied wherever necessary. FIG. 10 shows a fourth embodiment of a cartridge system according to the invention in cross-sectional view. In this variant, the discharge pipe (380) is already integrated in the mixing space (320) of the cartridge system when the closure (360) is closed. For the commissioning of such a cartridge system, the discharge pipe (380) is not, as in the previous embodiments, introduced into the outlet opening (322) and fixed there, but from the direction of the cartridge bottom (333) in the direction of the outlet opening (322) pressed

For this purpose, the closure (360) is a hollow cylinder which press-tightly closes the openings (340) in the cartridge walls (332) and thus the cartridges (330) to the mixing space (320) in its initial position. The inner diameter of the shutter (360) is larger than the outer diameter of the front part of the discharge pipe (380) facing the discharge pipe tip (381). The apertured (385) extension (386) has an outer diameter greater than the inner diameter of the closure (360). In addition, a step is provided between the extension (386) and the front part of the discharge pipe (380). The extension (386) is a hollow cylinder with openings (385) open towards the discharge tube tip (381) and fully closed in the direction of the cartridge bottom (333). Inside the discharge tube (380) is a static mixer (388).

When a force is applied to the mixing chamber (320) of this cartridge system from the direction of the cartridge bottom (333), for example with compressed air, the discharge tube (380) is pushed in the direction of the cartridge system head (350). Once the leading edge of the extension (386) facing the dispensing tube tip (381) strikes the cartridge bottom end of the closure (360), the dispensing tube (380) also shifts the closure (360) into the cartridge system head (350). The movement of the closure (360) is limited by a stop (374) located at the top of the cartridge system head (350). In the end position of the closure (360), the latter completely releases the openings (340) and bears against the stop (374). At the same time, the openings (385) of the extension (386) cover the openings (340).

If now a force, for example, by application of compressed air, from the direction of the cartridge bottom (333) on two delivery pistons (362) exerted, the contents of the cartridges (330) through the openings (340) and the openings (385) in the extension (386) of the discharge pipe (380). By means of the static mixer (388), the contents of the cartridges (330) in the discharge tube (380) are mixed to form a mix. Finally, the mixed mix is pushed out of the cartridge system by the discharge tube tip (381). In this embodiment, unlike the previous embodiments, the shutter (360) is not pushed toward the cartridge bottom (333), but toward the cartridge system head (350) to expose the openings (340). The ram pistons (362) may be interconnected by a ridge (not ganged) such that movement of the delivery pistons (362) is synchronized.

It may thus be provided according to the invention that in the mixing chamber (320) in the longitudinal direction of the cartridges (330) displaceable discharge tube (380) is located, which contains a static mixer (388) and the cartridge on its side facing away from the cartridge system head (350) side of the outer diameter of the discharge tube (380) is smaller than the inner diameter of the closure (360) in the form of an open hollow cylinder, that on its side facing away from the cartridge system head (350) a hollow, perforated on the lateral surface cylinder as extension (386) is arranged on the the cartridge head (350) facing away from the cartridge is sealed gas-tight whose outer diameter is equal to the inner diameter of the mixing chamber (320), and that in the mixing chamber (320) above the openings (340) of the cartridges (330) pins and / or webs as a stop ( 374) having an inner diameter greater than or equal to the inner diameter of the sliding shutter (360). This means that the discharge pipe (380) is pressurized by pressurized gas from the direction of the cartridge bottom (333) towards the cartridge system head (350). During this movement of the discharge tube (380), the displaceable closure (360) designed as a hollow cylinder is moved in the direction of the cartridge system head (350) until it abuts against webs or pins (374) on the cartridge system head (350). This movement of the hollow cylinder (360) towards the cartridge system head (350) exposes the openings (340) of the cartridges (330). At the same time, the perforations (385) of the hollow, perforated cylinder (386) move towards the openings (340) of the cartridges (330). This will open the cartridges (330). Alternatively, the movement of the discharge tube (380) may also be by mechanical force via the movement of rods, screws or bolts.

A fifth alternative embodiment of a cartridge system according to the invention is shown as a schematic cross-sectional view in FIG FIG. 11 shown. Between two or more cartridges (430) a mixing chamber (420) is arranged. In the cartridge walls (432), which separate the cartridges (430) from the mixing space (420), openings (440) are provided which connect the interiors of the cartridges (430) and the mixing space (420). The cartridges (430) are sealed at the lower end by delivery pistons (462). A closure (460), which is press-fitted in the mixing chamber (420) and completely closes the mixing space (420) in cross-section, also completely closes the openings (440). At the same time it is arranged in the mixing chamber (420) displaceable in the longitudinal direction. The cartridge system includes a cartridge system head (450) by providing an internal thread (451) for attaching a dispensing tube.

The closure (460) is made up of two parts. A closure member (461) serves to completely close the openings (440) in the initial position of the closure (460). As a second part of the closure (460) comprises an extension (486), which is provided in all previous embodiments, not on the closure, but on the discharge pipe. The extension (486) is designed as a hollow body closed on one side, which has openings (485) in the side walls.

When a dispensing tube is mounted in the outlet opening (422) by screwing it into the thread (451), the closure (460) in the mixing space (420) is pushed away from the outlet opening (422). If the dispensing tube comprises an extension below its external thread, which corresponds approximately to the length of the extension (486) of the closure (460), the closure is pushed as far into the mixing space (420) that the openings (485) of the extension (486) over the openings (440) in the cartridge walls (432) are in the end position of the closure (460). This is because the leading edge of the closure (460) facing the outlet opening (422) is located at the lower end of the internal thread (451) of the cartridge system head (450) in the home position.

Such a closure (460) is in FIG. 12 shown in perspective view. Dergte closure (460) has a cylindrical geometry and is therefore suitable for a mixing chamber (420) with a cylindrical interior. The closure (460) consists of two parts, namely the closure part (461) and the extension (486). The extension (486) has a plurality of oval openings (485) that extend through the cylindrical wall of the extension (486).

FIG. 13 shows a dispensing tube (480) for such a cartridge system as shown in FIG FIG. 11 is shown. The dispensing tube (480) includes a dispensing tube tip (481), an external thread (482), and an extension (486). The extension (486), which, when the discharge pipe (480) is installed in the cartridge system, makes contact between the closure part (461) and the discharge pipe (480), thus shares in this embodiment a part with openings (485). on the closure (460) and a part of the discharge pipe (480). The extension (486) can thus be both part of the closure (460), as well as part of the discharge tube (480) within the meaning of the invention.

Likewise, it would of course be possible to construct the extension only as part of the closure, this would in the present case, the extension (486) of the closure (460) in the outlet opening (422) into or through or at least into the region of the internal thread (451) pass. When screwing in the dispensing tube (480), the lower edge of the external thread (482) would then hit an upper edge of the extension (486) of the closure (460) and thus move the closure (460) to the desired end position.

A sixth performance example of a cartridge system according to the invention is shown in FIG FIG. 14 as a schematic cross-sectional representationgtgt. In this embodiment, a closure (560) and the discharge tube (680) form a unit. Both parts are here firmly connected to each other via an extension (586). The portion of the dispensing tube (580) further includes an ejection tube tip (581), a fastener (582), and a static mixer (588). In the connection, that is the extension (586) openings (585) are provided.

In its initial position, the closure (560) is press-fitted into a mixing space (520) located between two cartridges (530) which are closed at the bottom by delivery pistons (562). In this position, the closure (560) closes two openings (540) connecting the interior spaces of the cartridges (530) to the interior of the mixing space (520). A cartridge system head (550) extending the mixing space (520) includes on the inside a fastener (551) which is engageable with the attachment means (582) of the discharge tube (580). The fastening means (551, 582) may be, for example, internal and external threads. The two threads can already in the initial position of the closure (560) already partially mesh. When screwing in the system closure (560) with discharge tube (580), the closure (560) is displaced to expose the openings (540), with the openings (585) overlying the openings (540) in the final position ,

FIG. 15 shows a schematic representation of the side view of such a system closure (560) with firmly connected discharge tube (580). In demgten system is provided as a fastening means an external thread (582). Instead of desgten left-hand thread can of course also always come naturally a right-hand thread used. As openings (585) oval openings are again provided, can pass through the output components of the mixed material to be mixed into the interior of the discharge pipe (580).
The discharge tube (580) is rotated with an external thread (582) in the internal thread (551), while the cylinder jacket on the perforated extension (586) is moved towards the cartridge bottom and at the same time, the hollow body (560), which acts as a sliding closure and the has a closed lateral surface also moved towards the cartridge bottom until the perforations of the perforated extension (586) are over the openings (540) of the cartridges (530).

FIG. 16 shows a seventh embodiment of a cartridge system according to the invention in a schematic cross-sectional view. In this embodiment, a rod (670) is arranged on a closure (660), which is aligned by a centering device (690) in the center of a mixing chamber (620) formed as a hollow body. On the rod (670) or on the centering device (690), a Entarretiervorrichtung (691) is provided in the form of a hollow cylinder. The closure (660) closes openings (640) connecting cartridges (630) to the mixing space (620). At the front end of the cartridge system is a cartridge system head (650) having a fastener (651) for attachment a discharge pipe. The cartridge system head (650) is constructed as a hollow cylinder which forms an outlet opening (622) in the interior.

On the bottom side, the cartridges (630) are closed by delivery pistons (662). The delivery pistons (662) are connected to one another via a plate (695). Two locking hooks (693) are connected to the plate (695) in such a way that the plate (695) can easily be pushed over the locking hooks (693) in the direction of the outlet opening (622), but not in the opposite direction via the locking hooks (693). 693) can be pushed away. For this purpose, the locking hooks (693) could for example be constructed so that they are firmly connected to each other and through a hole in the plate (695), which is larger in diameter than the width of the two locking hooks (693), pass through and the locking hooks ( 693) are fixedly connected there to a second plate (not shown) whose diameter is greater than the diameter of the hole in the plate (695). But the locking hooks (693) can also be easily removed after removing the plate. It is also conceivable that the locking hooks (693) break off by the action of the unlocking device (691) or are at least partially irreversibly compressed, so that they can not subsequently engage again. Instead of the locking hooks (693), other locking means (693) can be used.

The locking hooks (693) are constructed of a flexible material so that they can be pressed together relatively easily. In the area of the locking hooks (693), a locking step (694) is arranged in the mixing chamber (620) so that the hooks of the locking hooks (693) can engage in the locking steps (694).

In the initial state of the closure (660) this closes the openings (640). The detent hooks (693) prevent movement of the plate (695) and thus the delivery piston (662) attached to the plate (695) out of the cartridges (630).

If a discharge tube with extension is installed in the outlet opening (622), the openings (640) are exposed and the Entarretiervorrichtung (691) is pushed over the locking hooks (693) so that they are pressed together and thus movement of the plate (695) from the outlet opening (622) away and thus the delivery piston (662) from the cartridges (630) out is possible.

Simultaneously with the insertion of the discharge tube, the hollow cylinder (691) arranged on the centering device (690) is pushed over the locking hooks (693), these bending perpendicularly to the longitudinal axis of the mixing chamber (620), and the locking pins locking hooks (693) move away from the locking stage (694) and thus the locking of the plate (695) is unlocked.

A variant of the invention is that an internal thread (651) or a snap lock is arranged on the side of the mixing chamber (620) facing the cartridge system head (650), that in the mixing chamber (620) a closure displaceable in the longitudinal direction of the cartridges (630) ( 660) is press-fitted closed on the side facing the cartridge system head (650) above its surface perpendicular to the longitudinal axis of the cavity (620), the slidable closure (660) being disposed over the openings (640) of the cartridges (630) in that the displaceable closure (660) is connected via a rod (670) to a circular or star-shaped centering disc (690), on the underside of which a hollow cylinder (691) is arranged, such that the hollow cylinder (691) has a smaller diameter than the inner diameter of the Mixing space (620) has, that at one end of an insertable discharge pipe, an external thread is arranged or a hollow cylinder with a pin for a e snap and that at the end of the external thread or the cylinder with pins in the longitudinal direction perforated on a cylinder jacket, so provided with openings extension in the form of a hollow cylinder or other longitudinally open, perforated in the lateral surface hollow body is arranged, such as in the FIGS. 7 and 8 shown.
The advantage of this arrangement is that at the same time as the insertion of the dispensing tube, the opening of the cartridges (630) takes place and at the same time also the cartridge bottoms closed by the plate (695) are released. As a result, the user can only then insert the cartridge inserts filled with the starting components into the corresponding extrusion gun / cement gun with which the cartridge system is operated when both the dispensing tube is inserted and the plate (695) used to close the cartridge bottoms is unlocked and removed is. It is thus impossible to use cartridges inserts in extrusion gun or cement guns to operate the cartridge system without the dispensing tube being inserted and the cartridges (630) being opened. As a result, a faulty operation is almost impossible.

1. a) um einen inneren Hohlzylinder oder einen inneren unregelmäßig oder regelmäßig geformten Hohlkörper zwei oder mehrere Kartuschen (30, 230, 330, 430, 530, 630) angeordnet sind, deren Längsachsen parallel zur Achse des inneren Hohlzylinders (20, 120, 220, 320, 420, 520, 620) oder des unregelmäßig oder regelmäßig geformten Hohlkörpers (Mischraum (20, 120, 220, 320, 420, 520, 620)) sind,
2. b) dass unterhalb der Kartuschenköpfe (31, 231) eine oder mehrere Öffnungen (40, 240, 340, 440, 540, 640) in den Kartuschenwänden (32, 132, 232, 332, 432) angeordnet sind,
3. c) dass diese Öffnungen (40, 240, 340, 440, 540, 640) die Innenräume der Kartuschen (30, 230, 330, 430, 530, 630) mit dem Innenraum des inneren Hohlzylinders (20, 120, 220, 320, 420, 520, 620) oder des inneren unregelmäßig geformten Hohlkörpers verbinden,
4. d) dass auf dem Kartuschenkopf (31, 231) ein in Längsrichtung der Kartuschen (30, 230, 330, 430, 530, 630) hohler Körper (50, 250, 350, 450, 550, 650) als Kartuschensystemkopf mit einem Innengewinde (51, 251, 451, 551, 651) angeordnet ist, wobei das Innengewinde (51, 251, 451, 551, 651) einen größeren Innendurchmesser hat als der Innendurchmesser des inneren Hohlzylinders (20, 120, 220, 320, 420, 520, 620) oder des unregelmäßig oder regelmäßig geformten Hohlkörpers,
5. e) dass vom hohlen Körper (50, 250, 350, 450, 550, 650) mit Innengewinde (51, 251, 451, 551, 651) bis zum Kartuschenboden (33, 333) ein durchgängiger Hohlraum ausgebildet ist,
6. f) dass unterhalb des Innengewindes (51, 251, 451, 551, 651) im inneren Hohlraum ein in Längsrichtung des Hohlraums verschiebbarer Verschluss (60, 260, 360, 460, 560, 660) in Presspassung angeordnet ist,
7. g) dass die Kartuschen (30, 230, 330, 430, 530, 630) mit Förderkolben (62, 162, 262, 362, 462, 562, 662) verschlossen sind,
8. h) dass die Förderkolben (62, 162, 262, 362, 462, 562, 662) an der dem Kartuschenboden (33, 333) abgewandten Seite durch zumindest einen Steg (65, 165) oder eine Platte (695) miteinander verbunden sind,
9. i) dass sich im inneren Hohlzylinder (20, 120, 220, 320, 420, 520, 620) oder inneren unregelmäßig oder regelmäßig geformten Hohlkörper ein Stange (70) befindet, die in Längsrichtung der Förderkolben (62, 162, 262, 362, 462, 562, 662) angeordnet ist, die an den Stegen (65, 165) oder der Platte (695) mit einem Ende befestigt ist, und eine Länge von mindestens der Länge der Förderkolben (62, 162, 262, 362, 462, 562, 662) hat,
10. j) dass die Stange (70) an der dem Kartuschenkopf (31, 231) zugewandten Seite gezahnt ist, wobei die Spitzen der Zähne in Richtung Kartuschenboden (33, 333) ausgerichtet sind,
11. k) dass die Stange (70) einen Querschnitt kleiner dem Querschnitt des inneren Hohlzylinders (20, 120, 220, 320, 420, 520, 620) oder des inneren unregelmäßig oder regelmäßig geformten Hohlkörpers hat,
12. l) dass am Ende des inneren Hohlzylinders (20, 120, 220, 320, 420, 520, 620) oder des inneren unregelmäßig oder regelmäßig geformten Hohlkörpers an der dem Kartuschenboden (33, 333) zugewandten Seite eine flexible Rastung (72) angeordnet ist, die einen Querschnitt kleiner oder gleich der gezahnten Stange (70) hat und einem Austragsrohr (80, 280, 380, 480, 580) mit einem an der Auslassöffnung (81, 281, 381, 481, 581) abgewandten Seite angeordnetem Außengewinde (82, 282, 482, 582), bei dem sich ein statischer Mischer (88, 388, 588) im Innenraum des Austragsrohrs (80, 280, 380, 480, 580) befindet, dass sich an der der Auslassöffnung (81, 281, 381, 481, 581) abgewandten Seite des Außengewindes (82, 282, 482, 582) ein an der Mantelfläche perforierter Hohlzylinder (86, 286, 386, 486, 586) oder ein perforierter unregelmäßig oder regelmäßig geformter Hohlkörper befindet, aufgebaut ist.

It is for example according to the invention that the cartridge system of at least two cartridges (30, 230, 330, 430, 530, 630) is constructed such that

1. a) arranged around an inner hollow cylinder or an inner irregularly or regularly shaped hollow body two or more cartridges (30, 230, 330, 430, 530, 630) whose longitudinal axes parallel to the axis of the inner hollow cylinder (20, 120, 220, 320 , 420, 520, 620) or the irregularly or regularly shaped hollow body (mixing chamber (20, 120, 220, 320, 420, 520, 620)),
2. b) that below the cartridge heads (31, 231) one or more openings (40, 240, 340, 440, 540, 640) are arranged in the cartridge walls (32, 132, 232, 332, 432),
3. c) that these openings (40, 240, 340, 440, 540, 640) the interiors of the cartridges (30, 230, 330, 430, 530, 630) with the interior of the inner hollow cylinder (20, 120, 220, 320, 420, 520, 620) or the inner irregularly shaped hollow body,
4. d) that on the cartridge head (31, 231) a hollow body (50, 250, 350, 450, 550, 650) in the longitudinal direction of the cartridges (30, 230, 330, 430, 530, 630) as a cartridge system head with an internal thread ( 51, 251, 451, 551, 651) is arranged, wherein the internal thread (51, 251, 451, 551, 651) has a larger inner diameter than the inner diameter of the inner hollow cylinder (20, 120, 220, 320, 420, 520, 620) or the irregular or regularly shaped hollow body,
5. e) that from the hollow body (50, 250, 350, 450, 550, 650) with internal thread (51, 251, 451, 551, 651) to the cartridge bottom (33, 333) is formed a continuous cavity,
6. f) that below the internal thread (51, 251, 451, 551, 651) in the inner cavity a slidable in the longitudinal direction of the cavity closure (60, 260, 360, 460, 560, 660) is press-fitted,
7. g) that the cartridges (30, 230, 330, 430, 530, 630) are closed with delivery pistons (62, 162, 262, 362, 462, 562, 662),
8. h) that the delivery pistons (62, 162, 262, 362, 462, 562, 662) are connected to one another at the side facing away from the cartridge bottom (33, 333) by at least one web (65, 165) or a plate (695),
9. i) that in the inner hollow cylinder (20, 120, 220, 320, 420, 520, 620) or inner irregularly or regularly shaped hollow body is a rod (70) in the longitudinal direction of the delivery piston (62, 162, 262, 362, 462, 562, 662) which is fixed to the webs (65, 165) or the plate (695) with one end, and a length of at least the length of the delivery pistons (62, 162, 262, 362, 462, 562, 662),
10. j) that the rod (70) is serrated on the side facing the cartridge head (31, 231), the tips of the teeth being directed towards the cartridge bottom (33, 333),
11. k) that the rod (70) has a cross section smaller than the cross section of the inner hollow cylinder (20, 120, 220, 320, 420, 520, 620) or the inner irregular or regularly shaped hollow body,
12. l) that at the end of the inner hollow cylinder (20, 120, 220, 320, 420, 520, 620) or the inner irregularly or regularly shaped hollow body on the cartridge bottom (33, 333) facing side a flexible detent (72) is arranged which has a cross-section smaller than or equal to the toothed rod (70) and a discharge tube (80, 280, 380, 480, 580) with an external thread (82) arranged at the outlet opening (81, 281, 381, 481, 581) , 282, 482, 582), in which a static mixer (88, 388, 588) is located in the interior of the discharge tube (80, 280, 380, 480, 580), that at the outlet opening (81, 281, 381 , 481, 581) facing away from the external thread (82, 282, 482, 582) is a perforated on the lateral surface of the hollow cylinder (86, 286, 386, 486, 586) or a perforated irregularly or regularly shaped hollow body is constructed.

The term cartridge system is understood to mean cartridges which are constructed from two, three, four, five or more cartridges (30, 230, 330, 430, 530, 630), the individual cartridges (30, 230, 330, 430, 530 , 630) are arranged parallel to each other. The cartridges (30, 230, 330, 430, 530, 630) may be cylindrical hollow bodies. These are so-called side-by-side cartridges. The cartridges may already be filled with starting components for a mix to be mixed, but may also be empty, d. H. that they are still with content, such. B. cartridges inserts must be filled.

The displaceable closure (60, 260, 360, 460, 560, 660) preferably has a closed lateral surface.

The advantage of the cartridge system is that all the openings (40, 240, 340, 440, 540, 640) in the cartridges (30, 230, 330, 430, 530, 630) can only be displaced by a sliding shutter (60, 260, 360 , 460, 560, 660) are closed. This has a slightly larger cross section than the mixing chamber (20, 120, 220, 320, 420, 520, 620). This means that the lateral surface of the displaceable closure (60, 260, 360, 460, 560, 660) is pressed against the inner wall of the mixing space (20, 120, 220, 320, 420, 520, 620) or its walls (21) becomes. When the slidable closure (60, 260, 360, 460, 560, 660) overlies the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630), so these are closed. In this case, the displaceable closure (60, 260, 360, 460, 560, 660) completely overlaps the openings (40, 240, 340, 440, 540, 640) in such a way that one more seal is required, closed lateral surface on the inner wall (21) of the mixing chamber (20, 120, 220, 320, 420, 520, 620) is applied. The seal is due to the contact pressure by the close contact of the lateral surface of the sliding closure (60, 260, 360, 460, 560, 660) with the inner wall (21) of the mixing chamber (20, 120, 220, 320, 420, 520, 620 ) reached.

Many of the plastics used in medicine, such as polypropylene, have only low static friction and sliding friction coefficients. This means that in sliding pairings of such plastics by relatively small force sliding can be effected. The sliding closure (60, 260, 360, 460, 560, 660) can therefore be displaced by the use of suitable plastics by axial movement. As a result, it is possible to move the displaceable body away from the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630), thereby moving the cartridges (30, 230 330, 430, 530, 630). Thus, when the slidable closure (60, 260, 360, 460, 560, 660) moves axially, the openings (40, 240, 340, 440, 540, 640) of all the cartridges (30, 230, 330, 430, 530, 630) are opened simultaneously.

The cartridges (30, 230, 330, 430, 530, 630) are closed with delivery pistons (62, 162, 262, 362, 462, 562, 662), wherein the delivery pistons (62, 162, 262, 362, 462, 562 , 662) on the cartridge bottom (33, 333) facing away from each other by webs (65, 165,) or a plate (695) are interconnected. This means that the delivery pistons (62, 162, 262, 362, 462, 562, 662) form a unit and can not be moved individually. As a result, a uniform expulsion of the pastes from all cartridges (30, 230, 330, 430, 530, 630) of the cartridge system is possible. This feature is essential if the pistons are to be moved by direct pressurization with compressed gas.

When screwing in the discharge tube (80, 280, 380, 480, 580), the extension (86, 286, 386, 486, 586) moves in the direction of the cartridge bottom (33, 333). As a result, a force is exerted on the displaceable closure (60, 260, 360, 460, 560, 660) in the direction of the cartridge bottom (33, 333). Once the static friction between the lateral surface of the displaceable closure (60, 260, 360, 460, 560, 660) and the inner wall (21) of the mixing space (20, 120, 220, 320, 420, 520, 620) is overcome, can the sliding closure (60, 260, 360, 460, 560, 660) in the direction of the cartridge bottom (33, 333) move. In this forced movement of the sliding shutter (60, 260, 360, 460, 560, 660) caused by attaching the dispensing tube (80, 280, 380, 480, 580), the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) are exposed synchronously. there The perforations (85, 285, 385, 485, 585) of the extension (86, 286, 386, 486, 586) are located above the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630). As a result, the interior spaces of the cartridges (30, 230, 330, 430, 530, 630) are connected to the interior of the extension (86, 286, 386, 486, 586) designed as perforated hollow cylinders or perforated irregular or regularly shaped hollow bodies. When the delivery pistons (62, 162, 262, 362, 462, 562, 662) move in the direction of the cartridge system head (50, 250, 350, 450, 550, 650), in the cartridges (30, 230, 330, 430, 530, 630) pass through the exposed openings (40, 240, 340, 440, 540, 640) into the interior extension (86, 286, 386, 486, 586) and towards the outlet opening (81, 281, 381, 481 , 581) of the dispensing tube (80, 280, 380, 480, 580) through the static mixer (88, 388, 588).

According to the invention, the displaceable closure (60, 260, 360, 460, 560, 660) is preferably designed as a hollow cylinder, wherein it is particularly preferred for the hollow cylinder to cover the entire cross section only on the side facing the cartridge head (39, 231) is closed. The thus formed closure of the closure (60, 260, 360, 460, 560, 660), which may be a disk, for example, prevents the latter from being expelled in the mixing space (20, 120, 220, 320) when the pastes are expelled. 420, 520, 620) in the direction of the cartridge bottom (33, 333) can propagate.

Essential to the invention is that the discharge tube (80, 280, 380, 480, 580) with its attachment means (82, 282, 482, 582) in the attachment means (51, 251, 451, 551, 651) on the mixing space (20 , 120, 220, 320, 420, 520, 620), thereby being arranged on the discharge tube (80, 280, 380, 480, 580) or on the slidable closure (60, 260, 360, 460, 560, 660) perforated extension (86, 286, 386, 486, 586) is moved in the longitudinal direction of the mixing space (20, 120, 220, 320, 420, 520, 620) and thus the displaceable closure (60, 280, 360, 460, 560, 660) along the mixing space (20, 120, 220, 320, 420, 520, 620), the openings (85, 285, 385, 485, 585) of the perforated extension (86, 286, 386, 486, 586) being upper the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) are pushed. This means that with the attachment of the discharge tube (80, 280, 380, 480, 580) at the same time the displaceable closure (60, 260, 360, 460, 560, 660) is displaced and thus the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) and that at the same time the openings (85, 285, 385, 485, 585) of the perforated extension (86, 286, 386, 486, 586) over the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) and thus slide Open the cartridges (30, 230, 330, 430, 530, 630). There is a synchronous opening of the dispensing tube (80, 280, 380, 480, 580) opening the cartridges (30, 230, 330, 430, 530, 630). This makes it virtually impossible for volatile paste components to escape from the cartridges (30, 230, 330, 430, 530, 630).

Due to the design as a closed hollow cylinder on one side in the direction of the cartridge bottom (33) open side, the rod (70) during the movement of the delivery piston (62) in the direction of the cartridge head (31) can go a maximum way back. For this purpose, the diameter of the tip of the rod (70) including the locking means (71) attached thereto is smaller than the inner diameter of the displaceable closure (60) designed as a hollow cylinder.

It is also possible to form the displaceable closure (60, 260, 360, 460, 560, 660) as a hollow oval body in cross section or in a regular or irregular polygonal cross section. It is also possible to form the displaceable closure (60, 260, 360, 460, 560, 660) as a solid body or as a body that can be composed of several individual parts (460, 461, 486, 560, 580). The slidable closure (60, 260, 360, 460, 560, 660) may be made of one or more materials, depending on the chemical stability requirements of the pastes and the desired slip characteristics.

According to the invention, on the inner wall (21) of the mixing chamber (20, 120, 220, 320, 420, 520, 620) pins, webs or a ring can be arranged as a solvent (74, 274, 374). They limit the maximum axial displacement of the slidable closure (60, 260, 360, 460, 560, 660) toward the cartridge bottom (33) or towards the outlet (322).

According to the invention, the elongated perforated hollow body (86, 286, 386, 486, 586) has a length in the longitudinal direction of the cartridges (30, 230, 330, 430, 530, 630) greater than or at least equal to the length of the openings (40 , 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630). This ensures that the entire openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) in attaching the discharge tube (80, 280, 380, 480, 580 ) can be exposed. Thus, an exposure of the openings (40, 240, 340, 440, 540, 640) over the entire cross section is possible.
Furthermore, according to the invention, the holding means (74, 274, 374) are spaced apart from the openings (40, 240, 340, 440, 540) in the longitudinal direction of the cartridges (30, 230, 330, 430, 530, 630). 640) of the cartridges (30, 230, 330, 430, 530, 630) of at least the length of the extension (86, 286, 386, 486, 586) and the closure (60, 260, 360, 460, 560, 660 ) to have. The holding means (74, 274, 374) are necessary so that when the pastes are expelled, the displaceable closure (60, 260, 360, 460, 560, 660) can not be moved any further than was previously required when opening the cartridges (30, 30). 230, 330, 430, 530, 630) was necessary. This means that with the holding means (74, 274) and the formation of a non-usable dead volume to be prevented.

The cartridges (30, 230, 330, 430, 530, 630) may include one or more slots (75) from the cartridge bottom (33, 333) at least to half the cartridge length aligned parallel to the cartridge axis such that the mixing chamber walls (21) slits (75) aligned in the longitudinal direction of the cartridges (30, 230, 330, 430, 530, 630) and of the same length as the slots (75) of the cartridges (30, 230, 330, 430, 530, 630), wherein the number of slots (75) in the mixing space walls (21) is equal to the number of slots (75) in the cartridges (30, 230, 330, 430, 530, 630) and that the slots (75) the mixing chamber walls (21) are located above the slots (75) of the cartridges (30, 230, 330, 430, 530, 630) so that the interior spaces of the cartridges (30, 230, 330, 430, 530, 630) are in line with the Mixing chamber (20, 120, 220, 320, 420, 520, 620) are interconnected.

It is according to the invention that the webs (65, 66, 165) have a cross-section smaller than the slots (75). This means that when the cartridges (30, 230, 330, 430, 530, 630) are pressed out, the webs (65, 66, 165) pass through the slots (75) in the cartridges (30, 230, 330, 430, 530). 630) in the direction of the cartridge system head (50, 250, 350, 450, 550, 650) can be moved. The slots (75) serve as a guide for the webs (65, 66, 165) and thus for the delivery pistons (62, 162, 262, 362, 462, 562, 662) during the extrusion movement in the direction of the cartridge head (31, 231).

In the context of the invention can also be provided that instead of the internal thread (51, 251, 451, 551, 651) in the cartridge system head (50, 250, 350, 450, 550, 650) pin (251) as a fastening means (51, 251) are arranged, whose upper sides in the direction of the cartridge bottom (33, 333) are chamfered and that on the discharge tube (80, 280, 380, 480, 580) instead of the external thread (82) pins (282) are arranged, which are beveled at the bottom, so that the pins (251) of the hollow body (250) with the pins (282) of the discharge tube (280) form a snap closure. As an alternative to the threads (51, 251, 451, 551, 651) attachment system, for attachment of the discharge tube (80, 280, 380, 480, 580) on the cartridge system head (50, 250, 350, 450, 550, 650) are also bayonet or retaining clips in question.

A method for opening a cartridge system according to the invention is characterized in that the discharge tube (80, 280, 480, 580) with its attachment means (82, 282, 482, 582) on the attachment means (51, 251, 451, 551, 651) of the Cartridge system head (50, 250, 450, 550, 650) is attached, at the same time arranged on the discharge pipe (80, 280, 480, 580) extension (86, 286, 486, 586) in the direction of the cartridge bottom (33) rotates and moves in the direction of the cartridge bottom (33) in the mixing space (20, 120, 220, 420, 520, 620) so that the displaceable closure (60, 260, 460, 560, 660) is moved in the direction of the cartridge bottom (33), whereby the openings (40, 240, 440, 540, 640) in the cartridge walls (32, 132, 232, 432) are exposed and the interiors of the cartridges (30, 230, 430, 530, 630) with the interior of the mixing space ( 20, 120, 220, 420, 520, 620).

The cartridge system according to the invention becomes packaging. Storage and application of pasty bone cements, dental multi-component preparations, adhesives, sealants, cosmetics and food used. Particularly suitable is the Mehrkompanentenkartuschensystem for the storage and application of pasty polymethyl methacrylate bone cements.

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

LIST OF REFERENCE NUMBERS

1

cartridge system

20, 120, 220, 320, 420, 520, 620

mixing room

21

Mixing chamber wall

22, 322, 422, 622

outlet

30, 230, 330, 430, 530, 630

cartridge

31, 231

cartridge head

32,132,232,332,432

cartridge wall

33,333

cartridge base

40, 240, 340, 440, 540, 640

opening

50, 260, 350, 450, 550, 650

Cartridge system head

51, 251, 451, 551, 651

Fasteners on the cartridge system head

60, 260, 360, 460, 560, 660

shutter

62, 162, 262, 362, 462, 562, 662

delivery piston

65.165

web

66

web

70, 670

pole

71

latching means

72

Securing means

74, 274, 374

attack

75

slot

76

Slashing

80, 280, 380, 480, 580

discharge pipe

81, 281, 381, 481, 581

dispensing tube

82, 282, 482, 582

Fasteners on the discharge pipe

85, 285, 385, 485, 585

openings

86, 286, 386, 486, 586

renewal

88, 388, 588

mixer

179

jacket

461

closing part

690

centering

691

Entarretiervorrichtung

693

locking hooks

694

Arretierungsstufe

695

plate

Claims (20)

Cartridge system for mixing and applying a mixed material, in particular a medical cement, comprising two cartridges (30, 230, 330, 430, 530, 630) arranged parallel to one another and a mixing chamber (20, 120, 220, 320, 420, 520, 620) with an outlet opening (22, 322, 422, 622), the cartridges (30, 230, 330, 430, 530, 630) each having at least one opening (40, 240, 340, 440, 540, 640) in the cartridge walls (US Pat. 32, 132, 232, 332, 432) connecting the cartridges (30, 230, 330, 430, 530, 630) to the mixing space (20, 120, 220, 320, 420, 520, 620), and the Cartridges (30, 230, 330, 430, 530, 630) each have a delivery piston (62, 162, 262, 362, 462, 562, 662) for expelling output components of the mixture from the cartridges (30, 230, 330, 430, 530, 630) through the openings (40, 240, 340, 440, 540, 640), characterized in that
in the mixing chamber (20, 120, 220, 320, 420, 520, 620) a closure (60, 260, 360, 460, 560, 660) arranged displaceably therein is arranged such that it seals the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) in an initial position and that the openings (40, 240, 340, 440, 540, 640) to the mixing chamber (20, 120, 220 , 320, 420, 520, 620) are at least partially opened in an end position of the displaceable closure (60, 260, 360, 460, 560, 660), wherein the displaceable closure (60, 260, 360, 460, 560, 660) from the starting position to the end position is displaceable. Cartridge system according to claim 1, characterized in that the mixing space (20, 120, 220, 320, 420, 520, 620) is a hollow body, in particular a hollow cylinder, with hollow body walls (21), wherein the openings (40, 240, 340, 440, 540, 640) in the cartridges (30, 230, 330, 430, 630, 630) extend through the hollow body wall (21) into the mixing space (20, 120, 220, 320, 420, 520, 620). Cartridge system according to claim 1 or 2, characterized in that
the mixing chamber (20, 120, 220, 320, 420, 520, 620) is arranged between the cartridges (30, 230, 330, 430, 530, 630), in particular such that the cartridge walls (32, 132, 232, 332, 432 ) are carried out in regions with the hollow body wall (21) in one. Cartridge system according to one of the preceding claims, characterized in that
the mixing space (20, 120, 220, 320, 420, 520, 620) is arranged parallel to the cartridges (30, 230, 330, 430, 530, 630). Cartridge system according to claim 4, characterized in that
in the interior of the mixing chamber (20, 120, 220, 320, 420, 520, 620) a movable rod (70) is arranged parallel to the delivery pistons (62, 162, 262, 362, 462, 562, 662) connected to the delivery pistons ( 62, 162, 262, 362, 462, 562, 662) via at least one web (65, 66, 165) and / or a plate (695) is fixedly connected, wherein the rod (70) at the outlet opening (22, 322, 422, 622) comprises a latching means (71) and in the mixing chamber (20, 120, 220, 320, 420, 520, 620) a counter-latching means (72) is mounted, which is connected to the latching means (71) of the rod (70). cooperates such that a movement of the rod (70) from the mixing chamber (20,120, 220, 320, 420, 520, 620) out and thus the delivery piston (62,162, 262, 362, 462, 562, 662) from the cartridges (30 , 230, 330, 430, 530, 630) clearly impeded, in particular prevented. Cartridge system according to claim 5, characterized in that
the cartridge walls (32, 132, 232, 332, 432) and / or the mixing space walls (21) have at least one slot (75) starting at the cartridge bottom (33, 333), which is arranged parallel to the cartridge axis, wherein the width of the or Slots (75) for receiving the webs or (65, 66.165) sufficient and the length of the slots or (75) in particular to at least half of the cartridge length (76) extends Cartridge system according to one of the preceding claims, characterized in that
the outlet port (22, 422, 622) is disposed in a cartridge system head (50, 250, 450, 550, 650), and the cartridge system head (50, 250, 450, 550, 650) is a fastener (51, 251, 451, 551, 651) for attaching a dispensing tube (80, 280, 480, 580), in particular on the inside of the cartridge system head (50, 250, 450, 550, 650), preferably a thread or a plurality of pins , Cartridge system according to one of the preceding claims, characterized in that
in the mixing chamber (20, 120, 220, 320, 420, 520, 620) a stop (74, 274, 374), preferably in the form of pins or webs, is arranged, which controls the movement of the displaceable closure (60, 260, 360 , 460, 560, 660) in the mixing space (20, 120, 220, 320, 420, 520, 620) and thereby defines the end position of the sliding shutter (60, 260, 360, 460, 560, 660). Cartridge system according to one of the preceding claims, characterized in that
the displaceable closure (60, 260, 360, 460, 560, 660) is press-fitted in the mixing space (20, 120, 220, 320, 420, 520, 620) and / or in the longitudinal direction of the mixing space (20, 120, 220 , 320, 420, 520, 620) is displaceable. Cartridge system according to one of the preceding claims, characterized in that
the delivery pistons (62, 162, 262, 362, 462, 562, 662) seal the cartridges (30, 230, 330, 430, 530, 630) tightly. Cartridge system according to one of the preceding claims, characterized in that
the displaceable closure (60, 260, 360, 460, 560, 660) comprises an extension (486) in the form of a hollow body in which openings (485) in the side walls of the mixing space (20, 120, 220, 320, 420 , 520, 620) adjacent hollow body walls are provided. Cartridge system according to one of the preceding claims, characterized in that
the displaceable closure (60, 260, 460, 560, 660) is a compact body or a hollow body, in particular a hollow cylinder, with a closed side. Cartridge system according to one of claims 1 to 11, characterized in that the displaceable closure (60, 260, 360, 460, 560, 660) is a cavity body open on both sides and a discharge tube (80, 280, 380, 480, 580) in the interior the mixing chamber (20, 120, 220, 320, 420, 520, 620) is slidably disposed, wherein the discharge pipe (80, 280, 380, 480, 580) one of the discharge opening (22, 322, 422, 622) facing or out their herausreichende open dispensing tube tip (81, 281, 381, 481, 581) and the cartridge bottom (33, 333) facing extension (86, 286, 386, 486, 586), in the direction of the cartridge bottom (33, 333) completely closed , and the extension (86, 286, 386, 486, 586) includes openings (85, 285, 385, 485, 585) in the sidewalls facing the cartridge walls (32, 132, 232, 332, 432), the inside being the discharge pipe (80, 280, 380, 480, 580) provides a continuous connection from the openings (85, 285, 385, 485, 585) to the Au a stemsrohrspitze (81, 281, 381, 481, 581), in which preferably a static mixer (88, 388, 588) is arranged, wherein the outer diameter of the extension (86, 286, 386, 486, 586) is less than or equal to Inner diameter of the mixing chamber (20, 120, 220, 320, 420, 520, 620) and greater than the inner diameter of the closure (60, 260, 360, 460, 560, 660), while the rest of the inside of the mixing chamber (20 , 120, 220, 320, 420, 520, 620) having a smaller outer diameter than the inner diameter of the closure (60, 260, 360, 460, 560, 660). Cartridge system according to claim 13, characterized in that
the stop (374) is provided in the cartridge system head (50, 250, 350, 450, 550, 650), in particular in the region of the outlet opening (22, 322, 422, 622), and in that the delivery pistons (62, 162, 262, 362, 462 , 562, 662) and / or the discharge pipe (80, 280, 380, 480, 580) can be acted upon with compressed air or compressed air. Cartridge system according to one of the preceding claims, characterized in that
a plate (695) and / or at least one web (65, 165) on the bottom side with the delivery piston (62, 162, 262, 362, 462, 562, 662) is firmly connected, and a locking means (70, 71, 693) with the plate (695) and / or the at least one web (65, 165) is connected, wherein the locking means (70, 71, 693) in the mixing chamber (20,120, 220, 320, 420, 520, 620) extends and there in a counter-locking means (72, 694) engages, so that movement of the plate (695) and / or the at least one web (65, 165) and the delivery piston (62, 162, 262, 362, 462, 562, 662) is blocked in the direction of the cartridge bottom (33, 333), and an unlocking device (691) is provided in the interior of the mixing chamber (20, 120, 220, 320, 420, 520, 620) which is fixedly connected to the slidable closure (60, 260, 360, 460, 560, 660) such that upon displacement of the slidable closure (60, 260, 360, 460, 560, 660) into its final position, unlocking the locking means (70, 71, 693) takes place so that a movement of the plate (695) and / or the at least one web (65, 165) and the delivery pistons (62, 162, 262, 362, 462, 562, 662) in the direction of the cartridge bottom (33, 333) is possible. Discharge tube (80, 280, 380, 480, 580) for a cartridge system according to one of the preceding claims, characterized in that
the discharge tube (80, 280, 380, 480, 580) opposite a discharge tube tip (81, 281, 381, 481, 581) of the discharge tube (80, 280, 380, 480, 580) has an extension (86, 286, 386, 486, 586) ) whose diameter is smaller than the inner diameter of the mixing space (20, 120, 220, 320, 420, 520, 620) and which is adapted to the sliding shutter (60, 260, 360, 460, 560, 660) Inserting the dispensing tube (80, 280, 380, 480, 580) into the cartridge system head (50, 250, 350, 450, 550, 650) of the cartridge system so that the openings (40, 240, 340, 440, 540, 640) of the cartridges (30, 230, 330, 430, 530, 630) are at least partially open. Discharge tube (80, 280, 380, 480, 580) according to claim 16, characterized in that the extension (86, 286, 386, 586) is a hollow body, in particular a hollow cylinder, with openings (85, 285, 385, 585) in which, in an operative position of the dispensing tube (80, 280, 380, 580) in the cartridge system, the openings (40, 240, 340, 540, 640) of the cartridges (30, 230, 330, 530, 630) of openings (85, 285, 385, 585) in the extension (86, 286, 386, 586) are at least partially covered, so that the interiors of the cartridges (30, 230, 330, 530, 630) with the mixing chamber (20, 120, 220, 320, 520, 620) are connected through the openings (40, 240, 340, 540, 640). Discharge tube (80, 280, 380, 480, 580) according to claim 16 or 17, characterized in that
the dispensing tube (80, 280, 480, 580) comprises a fastening means (82, 282, 482, 582), preferably a pin (282) or a thread (82), in particular an external thread (82). Discharge tube (80, 280, 380, 480, 580) according to one of claims 16 to 18, characterized in that
the discharge pipe (80, 280, 380, 480, 580) comprises a static mixer (88, 388, 588). Discharge tube (80, 280, 380, 480, 580) according to one of claims 16 to 19, characterized in that
the dispensing tube (80, 280, 380, 480, 580) is fixedly connected to the slidable closure (60, 260, 360, 460, 560, 660) so that both form a common part of the cartridge system.

Images