EP2384821A2 - Système de cartouche doté d'une cartouche de gaz comprimé - Google Patents

Système de cartouche doté d'une cartouche de gaz comprimé Download PDF

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Publication number
EP2384821A2
EP2384821A2 EP11003054A EP11003054A EP2384821A2 EP 2384821 A2 EP2384821 A2 EP 2384821A2 EP 11003054 A EP11003054 A EP 11003054A EP 11003054 A EP11003054 A EP 11003054A EP 2384821 A2 EP2384821 A2 EP 2384821A2
Authority
EP
European Patent Office
Prior art keywords
cartridge
valve
cartridges
opening
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11003054A
Other languages
German (de)
English (en)
Other versions
EP2384821A3 (fr
Inventor
Sebastian Vogt
Hubert Büchner
Tim Schnieber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heraeus Medical GmbH
Original Assignee
Heraeus Medical GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heraeus Medical GmbH filed Critical Heraeus Medical GmbH
Publication of EP2384821A2 publication Critical patent/EP2384821A2/fr
Publication of EP2384821A3 publication Critical patent/EP2384821A3/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0146—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like comprising a valve in the proximity of the nozzle that is not actuated by pressure, e.g. manually actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/015—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with pneumatically or hydraulically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026—Gate valves; Sliding valves; Cocks

Definitions

  • the present invention relates to a cartridge system for applying a flowable material, in particular a medical cement, comprising at least one cartridge, wherein the at least one cartridge cartridge walls, each comprising a cartridge head and a respective delivery piston opposite the cartridge head for expelling a cartridge contents, the cartridge or the Cartridges include or include at least one opening in the cartridge head or the cartridge wall, which are closed by a valve.
  • 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 safe and easy to open, with a synchronous opening of the individual cartridges is desirable.
  • Cartridge systems for the application of pasty two- or multi-component systems have been known for decades. Examples are the documents CH 669 164 A5 . EP 0 607 102 A1 . EP 0 236 129 A2 . DE 3 440 893 A1 . US 4,690,306 A . US 20091062808 A1 . EP 0 787 535 A1 . WO 2006/005 206 A1 . EP 0 693 437 A1 . EP 0 294 672 A . EP 0 261 466 A1 and EP 2 008 707 A1 called.
  • 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.
  • a discharge tube is screwed into a thread on the cartridge head or fixed with a, a thread nachreliendem 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 adhesive and Dichtungsmitteiindustrie based on the fact that the cartridge head, the wall material of the cartridge is made very thin, so that this wall can be easily pierced. When piercing particles are removed from the wall, which thereby enter the pasty material.
  • FIG. 20101006455 A1 Another cartridge system is based on the packaging of pasty multicomponent systems in tubular bags ( WO 20101006455 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 US 2,818,899 proposes a sealing gun that contains a gas cartridge in the handle.
  • the compressed gas of the gas cartridge pushes a piston inside a cartridge in the direction of the cartridge head after opening the cartridge.
  • the control of the flow of pasty mass is effected by a central going through the cartridge rod, which can close the outlet opening of the cartridge.
  • the EP 0169 533 A2 1985 discloses a viscous injection device. Bel this does not continue after interruption of Drucfcgaszubuch the squeezing, because at the discharge opening an injection control valve is arranged, which interrupts the flow of the viscous agent. It is interesting that the gas supply and at the same time the exit of the viscous agent can be controlled by the valve of the trigger handle. The injection control valve closes when it is not pressurized with compressed gas.
  • the EP 1 118 313 A1 discloses a gun for squeezing bone cement.
  • the drive is also done by a gas cartridge. It is essential that this very complex system has a rod which is intended to expel the amount of cement contained in the discharge pipe.
  • This elegant technical solution is very well suited for conventional polymethylmethacrylate bone cements. For cartridge systems for mixing several components with a static mixer, however, this gun is not usable. In addition, the production of this gun is very expensive.
  • the WO 2008/109439 A1 discloses a compressed gas driven discharge device that uses a hydraulic medium to which the compressed gas is forced.
  • 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 050 762 A1 . DE 10 2008 030 312 A1 . DE 10 2007 052 116 A1 ). For such cements so far no suitable cartridge systems have been proposed.
  • An essential ingredient of pasty polymethyl methacrylate bone cements is the monomer methylmethacrylate. 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 sterilization with ethylene oxide, the cartridge pistons in the cartridges are moved through the evaporating methyl methacrylate and, in extreme cases, can be expelled from the cartridges.
  • the object of the invention is therefore 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-shaped components should be additionally ensured.
  • 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. Also possible operator error of the user should be avoided.
  • a rotatable valve is rotatably mounted in a holder on the cartridge head or the cartridge heads or a displaceable valve is slidably mounted in a holder on the cartridge or the cartridges, wherein the valve at least one connected to an outlet opening passage through the Valve, the valve in a closed position at least one opening of at least one cartridge, in particular all openings of each cartridge, tightly closes, in an open position of the valve, the passage or the passages with the opening or the openings is or are connected, so that a Cartridge contents from the cartridge or the cartridges can be pressed through the outlet opening, and wherein the valve from the closed position to the open position by a rotation of the valve or by a displacement of the valve is convertible, wherein the movement of the valve to an opening in the one Cartridge system arranged or attachable gas pressure cartridge leads by the gas pressure cartridge moves relative to an opening device of the cartridge system.
  • the gas pressure cartridge is firmly connected to the cartridge wall or the cartridge walls and the opening device is movable by the movement of the valve or the opening device is firmly connected to the cartridge wall or the cartridge walls and the gas pressure cartridge is movable by the movement of the valve.
  • the gas-pressure cartridge or the opening device is firmly connected to the valve which can be displaced in the longitudinal direction of the cartridge or the cartridges.
  • the gas pressure cartridge or the opening device is slidably disposed adjacent to the cartridge or the cartridges, in particular in a space between the cartridges, and the rotatable valve comprises an extension relative to the outlet opening, the gas pressure cartridge or the opening device in one rotation of the rotatable valve from the closed to the open state in the direction of the cartridge floor moves and thereby opens the Gestikpatrone with the opening device.
  • Cartridge systems according to the invention can also be characterized in that the opening device comprises a mandrel for opening a valve of the gas pressure cartridge. It can be provided that the dome comprises a passage through which the gas from the open gas pressure cartridge can be conducted, wherein a throttle valve is preferably arranged in the passage is.
  • the opening of the open gas pressure cartridge is arranged in the open position of the valve in a pressure chamber, which is arranged next to the cartridge or the cartridges, in particular between the cartridges and preferably sealed from the environment gas-tight.
  • the pressure chamber is connected via at least one connection with a rear region of the cartridge or with the rear regions of the cartridges, so that with an increase in pressure in the pressure chamber or the delivery piston move in the direction of the cartridge head or the cartridge heads when the outlet opening is open.
  • the cartridge system comprises at least two, preferably three cartridges arranged parallel to one another for producing a mixed material.
  • the delivery pistons of the cartridges are interconnected by at least one web and the cartridge walls include slots that extend from the bottom of the cartridge up to about half of the cartridges, wherein the cartridge heads facing side of the delivery piston deeper than in its initial position the slots are arranged in the cartridges, so that the front region of the cartridges for the cartridge contents or with the cartridge adhesive is separated from the rear region of the cartridges, in particular gas-tight, and wherein the slots are so wide that they move the web or webs through allow the slots.
  • a discharge pipe is arranged on the valve or the nozzle, which starts at the outlet opening and extends the passage up to a discharge pipe spout, wherein preferably the discharge pipe comprises in its interior a static mixer.
  • a discharge pipe valve is arranged in the discharge pipe, with which the volume flow of the material to be applied can be interrupted, in particular controlled.
  • the invention further proposes a cartridge system in which at least one sealing ring is or are arranged between the cartridge wall or the cartridge head and the valve at one or more openings in the valve and / or at the opening (s), so that in the open position of the Valve at least one fluid-tight connection is provided from the at least one opening in the cartridge or to the passage or passages or are.
  • valve which is in particular cylindrical or shaped as a cylinder section, in the open and closed positions, is press-fitted over the orifices on the cartridge head or cartridges walls and seals or seals them tightly connecting the passage (s).
  • the invention is therefore based on the surprising finding that a connection of the movement of the valve with which the cartridge system is opened and thus provided for applying a material, and the opening of a compressed gas cartridge is possible to a To achieve simplification of the usability of the cartridge system.
  • the force that must be applied during the movement of the valve can be used to press a mandrel into a designated valve of the gas pressure cartridge and thereby open it.
  • the gas pressure then leads in erfndungsconceem structure of the cartridge system to a propulsion of a delivery piston in a cartridge or more delivery pistons in several cartridges of the cartridge system, through which a material stored therein can be driven.
  • throttle valves may be provided between the gas pressure cartridge and the delivery pistons and at a discharge opening / outlet opening of the cartridge system.
  • the cartridge system When the cartridge system directly incorporates the gas pressure cartridge and a dispensing tube, the cartridge system is readily deployable and operational by a single movement, namely, rotating a rotatable valve or moving a slidable valve. This can be a decisive advantage under difficult operating conditions, such as when used as a cartridge system for bone cements in the surgical area.
  • the new development is a cartridge system, which contains an integrated drive mechanism, so that an additional squeezing device, such as a squeeze gun, is no longer necessary.
  • the transfer of the dispensing tube to the dispensing position on the cartridge head or cartridges heads continues to be synchronized with the opening of the cartridges to avoid user operator error.
  • the opening of the cartridges takes place synchronously with the activation of the drive system.
  • Such a cartridge system can be made entirely from inexpensive plastic injection molded parts.
  • An optionally available compressed gas cartridge and the optionally available spring are preferably made of metal.
  • the cartridge system makes it possible, when force is applied in the direction of the cartridge system head, to move a plurality of delivery pistons synchronously in the cartridges and thus to evenly extrude the flowable materials so that the mixing ratio of the pastes to one another is ensured.
  • flowable material liquid materials, viscous materials and also highly viscous materials that flow only when pressurized understood.
  • a closure Under a sliding closure according to the present invention, a closure is to be understood, the first in the initial position by a fixed connection with the walls of the gap, for example, by thin bridges, if this solid compound has predetermined breaking points, which break when a force on the closure and thus allow the displacement of the closure under the action of force.
  • 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.
  • FIG. 1 shows a schematically illustrated cross-sectional view of a cartridge system according to the invention, which is suitable for mixing a mixed material consisting of two or more components.
  • the cartridge system comprises at least two cartridges (1) in which the starting components of the mixed material consisting of flowable materials are contained.
  • the cartridges (1) can also be provided more cartridges, which are arranged, for example, behind the two cartridges (1) shown.
  • the cartridges (1) are bounded laterally by cartridge walls (3) and by cartridge heads (5) on the front panel. From the direction of the cartridge bottom (9), the cartridges (1) are closed gas-tight by delivery pistons (10) so that flowable cartridge contents from the cartridges (1) can be pressed by pressurizing the delivery pistons (10).
  • the two cartridges (1) are firmly connected to each other via a web (11).
  • openings (12) are provided.
  • a valve (20) is arranged above the two openings (12) on the cartridge heads (5) and is mounted rotatably about the axis of rotation (A) in a holder (22) fixedly connected to the cartridge heads (5).
  • the holder (22) has an omission in this area.
  • To the holder (22) can be constructed of two parts.
  • the external thread (28) is suitable for fastening a dispensing tube (30) with a matching internal thread (32).
  • the discharge pipe (30) can also be fixedly connected to the valve (20), that is to say without internal thread (32) and external thread (28).
  • the openings (12) and thus the cartridge system can be closed by a rotation of the valve (20) about the axis of rotation (A). The cartridge system is then closed and the valve (20) is then in the closed position.
  • valve (20) Inside the valve (20) there are two passages (34) which are in the in FIG. 1 illustrated open position of the valve (20) form a continuous connection of the two openings (12) of the cartridges (1) to the outlet opening (26).
  • the flowable material (not shown) contained in the cartridges (1) is forced out of them through the openings (12) and the passages (34) into the connection (24).
  • a discharge pipe (30) On the outlet opening (26), a discharge pipe (30) is mounted, which contains a static mixer (36), so that the two output components in the discharge pipe (30) are better mixed. The mix can then be applied via a dispensing tube tip (38) of the dispensing tube (30).
  • a cock (40) is arranged above a discharge pipe valve (42) is operable.
  • the discharge pipe valve (42) can close the discharge pipe (30) and can also be opened again via the tap (40).
  • the discharge pipe valve (42) is preferably a throttle valve, with which the flow of the mixed material is adjustable from the outside. The discharge pipe valve (42) can then not only be opened and closed, but also control the cross section of the passage through the discharge pipe (30).
  • an extension (44) is arranged with a rounded shape.
  • the extension (44) presses on a piston (46) movable between the cartridges (1) in the direction of the cartridge axes and into which a pressurized gas cartridge (48) can be inserted.
  • a compressed gas cartridge (48) arranged in the movable piston (46) is pressed with the extension (44) in the direction of the cartridge bottom (9).
  • a web (50) between the cartridge bottom (9) and the movable piston (46) is arranged.
  • a hollow mandrel (52) is arranged, the tip of which is assigned to the movable piston (46).
  • a spring (54) to the compressed gas cartridge (48) is arranged.
  • the extension (44) presses on the movable piston (46) with the pressurized gas cartridge (48) positioned by the spring (54), thus pushing the pressurized gas cartridge (48) onto the hollow mandrel (52), wherein the spring (54) thereby is compressed.
  • the pressure gas cartridge is opened and the gas can escape.
  • a passage (56) through which the gas can escape from the compressed gas cartridge (48).
  • the passage also extends through the web (50) on which the mandrel (52) is arranged.
  • the cartridge walls (3) pointing in the direction of the movable piston (46) also laterally delimit an outwardly closed pressure chamber (58), into which the passage (56) and thus the opened compressed gas cartridge (48) opens.
  • a throttle valve (60) is arranged in the passage (56) with which the gas flow through the passage (56) or out of the compressed gas cartridge (48) and thus the pressure in the pressure chamber (58 ) is controllable.
  • a cock, a lever or a screw head is arranged on the throttle valve (60), with which the throttle valve (60) can be operated from the outside.
  • the cartridge walls (3) are slotted in the region of the cartridges (1) which faces the cartridge bottom (9) in such a way that the delivery pistons (10) have a front region of the cartridges (1) which are conveyed by the delivery pistons (10). extends to the cartridge heads (5), gas-tight from a slotted rear portion of the cartridges (1) separates.
  • seals are provided on the delivery pistons (10), which close tightly with the unslotted cartridge walls (3) and prevent gas from flowing from the rear area into the front area.
  • the slotted part of the cartridge walls (3) is in FIG. 1 hatched shown.
  • the slot (62) also extends through the walls of the pressure space (58) and thus connects the pressure space (58) to the rear area of the cartridges (1). However, the slot (62) has no connection to the outside.
  • the slot (62) is wide enough to receive the web (50) and allow movement of the web (50) along the slot (62).
  • the cartridge system is closed by a cover (64) gas-tight to the outside.
  • the cover (64) comprises a fastening means (66) in the form of a detent which engages in a fastening means (68) in the form of a counter-locking on the cartridge bottom (9) on the cartridge walls (3) and the walls of the pressure chamber (58) and thereby the pressure chamber (58) and the rear portion of the cartridges (1) gas-tight from the environment separates.
  • an internal thread (66) and an external thread (68) could be provided as alternative attachment means (66, 68).
  • the cover (64) can also be flat and easily flanged.
  • a seal may be provided in the region of the cover (64) for connecting the cover (64) to the rear portions of the cover (64) Seal cartridges (1) and the pressure chamber (58). It is also according to the invention that the cover (64) is firmly connected to the cartridge walls (3) and the walls of the pressure chamber (58), in particular gas-tight.
  • the discharge tube (30) is in the area between the cartridges (1), projecting at a right angle or in a position therebetween and the openings (12) are closed by the rotatable valve (20), since the passages (34) the rotatable valve (20) are not connected in this position with the openings (12).
  • a user of the cartridge system need only rotate the dispensing tube (30) to the working position by rotating the valve (20) about the axis of rotation (A) so that the dispensing tube (30) extends the symmetry axes of the cartridges (1).
  • the valve (20) By the rotation of the valve (20), the cartridges (1) are opened, since now the openings (12) via the passages (34) are connected to the discharge pipe (30).
  • the extension (44) pushes the piston (46) with the compressed gas cartridge (48) on the hollow dome (52), so that the Drtrckgaspatrone (48) is opened.
  • the gas flows out of the compressed gas cartridge (48) and thus builds up a pressure in the pressure chamber (58). Since the pressure chamber (58) via the slots (62) is connected to the rear parts of the cartridges (1), but at the same time is sealed to the outside, presses the gas on the cartridge bottom (9) facing sides of the delivery piston (10).
  • the delivery pistons (10) are driven by the pressure in the cartridges (1) in the direction of the cartridge head (5). At the same time, the web (11) connecting the delivery pistons (10) is pushed forward through the cartridges (1), slot (62) and pressure chamber (58).
  • the front portion of the cartridges (1) is filled with a cartridge contents (not shown) which, due to the movement of the delivery pistons (10), are forced through the openings (12) in the outlet port (26) and the static mixer (36) of the discharge tube (30) is mixed and finally expelled from the dispensing tube tip (38).
  • the web (11) merely ensures that the delivery pistons move at the same speed in the direction of the cartridge heads (5), even if different resistances due to different cartridge contents result for the movement of the various delivery pistons (10) in the cartridges (1). If no different resistances are to be expected for the movement of the delivery pistons, the web (11) can also be omitted, so that the isostatic pressure from the compressed gas cartridge (48) then moves both delivery pistons (10) uniformly.
  • the slots (62) can then also be replaced by smaller openings which connect the pressure chamber (58) with the rear area of the cartridges (1). These openings should be larger in cross section than the cross section of the passage (56), or the opening cross section of the fully opened throttle valve (60), so that the pressure through the openings from the pressure chamber (58) can easily spread in the rear regions of the cartridges (1).
  • the flow of the mixed material to be applied which emerges from the Austragsrnhrspitze (38) can be controlled.
  • the throttle valve (60) controls the cross-section of the passage (56) and thus the pressure on the backs of the delivery pistons (10).
  • the discharge pipe valve (42) determines the inner cross section of the discharge pipe (30) and thus controls the resistance of the flow of the mixed material through the discharge pipe (30).
  • FIG. 1 shown cartridge system with two cartridges (1) can be easily on a cartridge system with a cartridge (1) simplify or generalize to a cartridge system with three, four, five or even more cartridges (1).
  • cartridges (1) may be arranged one or two more cartridges whose delivery pistons are also connected to each other via the web (50) or via additional webs through slots in the cartridge walls.
  • the rotatable valve (20) for each cartridge then comprises a passage (34) connecting ports on the cartridge heads to the outlet port (26) and the discharge tube (30), respectively.
  • Each cartridge is connected in the rear area with the pressure chamber (58).
  • FIG. 2 shows a side view of the cartridge system according to the invention FIG. 1 , From the outside, two cartridges (1) can be seen, which are arranged parallel zuelnander. Between the two cartridges (1) the outwardly closed pressure chamber (58) is arranged. From the pressure chamber (58) protrudes out along the pressure chamber (58) movable piston (46) in which a compressed gas cartridge is arranged. On the cartridge heads bearings (22) for a rotatable valve (20) are arranged.
  • a discharge tube (30) comprising a discharge blow valve (42) with a tap (40).
  • an extension (44) is arranged, which pushes the movable piston (46) in the pressure chamber (58) in the illustrated application position.
  • the cartridge system is closed on the bottom side with a cover (64).
  • the extension (44) is rotated downwards. It presses with increasing rotational movement of the cylindrical valve (20) on the movable piston (46).
  • the movable piston (46) thus presses the gas cartridge (48) downwards in the direction of the hollow dome (52) against the spring (54).
  • the spring force of the spring (54) must be overcome in addition to friction.
  • the gas cartridge (48) moves towards the hollow mandrel (52) and is penetrated by it. This allows the compressed gas to escape.
  • the lid (64) prevents uncontrolled gas leakage from the closed cartridge system and the gas presses on the delivery piston (10). As a result, the flowable materials in the cartridges (1) are pressed in the direction of the cartridge heads (5).
  • the dispensing tube (30) is connected to the cartridges (1) via the rotatable valve (20) located in at least two yoke-shaped bearings (22).
  • the system according to the invention functions in such a way that in the closed state the discharge tube (30) is rotated in the direction of the cartridge bottom (9).
  • the discharge tube (30) is preferably parallel to the cartridges (1).
  • the discharge tube (30) folded down towards the bottom of the cartridge (9) is simply turned upwards in the direction of the cartridge head (5) or cartridge heads (5).
  • the openings are not congruent with the openings (12) of the cartridge head (5) or the cartridge heads (5).
  • the rotatable valve (20) is rotated so that the openings of the valve (20) are congruent with the openings (12).
  • the valve (20) formed as a rotatable cylinder is closed on both narrow sides and preferably tapers conically from one narrow side to the other. This makes it possible to easily mount the rotatable valve (20) in the bearings (22).
  • valve (20) is preferably press-fitted in the yoke-shaped bearings (22) or on the cartridge wall (103). Due to the interference fit a sufficient sealing effect is achieved. It is also within the scope of the invention that additionally Sealing rings can be arranged on the valve (20) if the flowable materials to be stored in the cartridges (1) should require this because of their properties.
  • the discharge pipe (30) has an outer diameter preferably equal to or less than the distance between the yoke-shaped bearings (22) immediately above the connection point between the rotatable valve (20) and the discharge pipe (30).
  • the discharge pipe (30) fixes the valve (20) between the bearings (22). As a result, the valve (20) does not slip out.
  • a first bearing (22) has a larger inner diameter than a second bearing (22) and that the connection point from the rotatable valve (20) to the discharge pipe (30) to the first bearing (22) in is located at a distance which is smaller than half the outer diameter of the discharge pipe (30) immediately above the junction of the rotary valve (20) with the discharge pipe (30).
  • the assembly of the rotatable valve (20) it is facilitated.
  • the half outer diameter of the discharge pipe (30) is slightly larger than the distance of the center of the joint of the rotary valve (20) with the discharge pipe (30)
  • the discharge pipe (30) presses the rotary valve (20) into the bearings (22 ).
  • the valve (20) is massively pressed into the bearings (22), so that a good sealing effect is achieved.
  • the openings of the rotatable valve (20) with the openings (12) of the cartridge head (5) or the cartridge heads (5) forms at least one fluid-permeable connection between the interior spaces of the cartridges (1) when the Axis of the discharge tube (30) parallel to the longitudinal axis of the cartridge (1) or the longitudinal axes of the cartridges (1) and the opening (38) of the discharge tube (30) in the cartridge head (5) or the cartridge heads (5) opposite set Direction is located.
  • the openings of the rotary valve (20) with the Publ openings (12) of the cartridge head (5) or the cartridge heads (5) form at least one non-permeable to flowable materials connection between the interiors of the cartridges (1), if the axis of the dispensing tube (30) is parallel to the longitudinal axis of the cartridge (1) or the longitudinal axes of the cartridges (1) and the opening (38) of the dispensing tube (30) in the cartridge bottom (9) or the cartridge bottoms (9) facing direction is located.
  • the extension (44) is preferably formed semicircular.
  • the extension (44) can easily on the rotational movement of the valve (20) about its axis on the movable piston (46) and thus cause the opening of the gas cartridge (48).
  • FIG. 3 shows a schematic longitudinal section of an alternative cartridge system with inserted discharge pipe (130).
  • a valve (120) positioned between two cartridges (101) displaceable in the longitudinal direction of the cartridge gap and the discharge tube (130) form one unit. Both parts are firmly connected.
  • the dispensing tube (130) further includes a dispensing tube tip (138), a fastener (128), a static mixer (136) and a dispensing tube valve (142) operable with a cock (140).
  • a cock 140
  • valve (120) In the in FIG. 3 In the initial position shown, the valve (120) is press-fitted into a space closed by a cylinder wall and located between the two cartridges (101) which are closed on the bottom side by delivery pistons (110). In this position, the valve (120) closes two openings (112) connecting the interior spaces of the cartridges (101) with the closed space. The openings (112) are located in the Zwiachcnraum facing cartridge walls (103).
  • a spigot (124) extending the closed space includes on the inside a fastener (132) engageable with the fastener means (128) of the spout (130).
  • the Befest Trentsmiftel (128, 132) may be, for example, internal and external threads.
  • the two threads can already in the initial position of the valve (120) already partially mesh.
  • the valve (120) is displaced so that the openings (112) are exposed, then in the end position, the openings (112) over the passages (134) ,
  • a closed pressure chamber 158 below the closed gap and the valve (120) is a closed pressure chamber (158).
  • the closed space and the pressure space (158) are limited in principle by the same cylinder walls and separated from each other by the bottom of the valve (120). If the discharge pipe (130) with the displaceable valve (120) removed from the cartridge system, the closed space and the pressure chamber (158) form a cylindrical cavity which is open in the direction of the cartridge heads (105) The two delivery pistons (110) are over a web (111) connected to each other.
  • the cartridge walls (103) and the cylinder wall of the pressure space are slotted toward the cartridge bottom (109) so that the web (111) can easily move through the slot (162).
  • the cartridge system In the direction of the cartridge bottom (109), the cartridge system is sealed by a cover (164). From one of the cartridge walls (103) protrudes a web (150) with a in the direction of the displaceable valve (120) aligned mandrel (152).
  • This web (150) and the web (111) for connecting the delivery pistons (110) with the slots (162) are arranged on the cartridge wall (103) such that the web (150) with the mandrel (152) movement of the web (111) for connecting the delivery pistons (110) in the slots (162) not hindered.
  • the web (111) for connecting the delivery pistons (110) and the slots (162) are preferably not arranged centrally in the pressure chamber (158).
  • the pressure chamber (158) must still be leakproof, so the slots (162) must not have any connection to the outside.
  • the web (150) is displaced so far in the direction of the nozzle (124) that the web (111) only hits the web (150) when the delivery pistons (110) have reached the cartridge heads (105).
  • a compressed gas cartridge (148) is arranged in the pressure chamber (158).
  • the compressed gas cartridge (148) is fixed with a spring (154) between the web (150) and the compressed gas cartridge (148).
  • the compressed gas cartridge can also be releasably connected to a fixing device (not shown) at the bottom of the displaceable valve (120).
  • the spring (154) can then be omitted.
  • a gas pressure cartridge (148) can then be fixed to the bottom of the displaceable valve (120).
  • fixing devices for example, bayonet locks or locking devices with pins come into question.
  • the valve (120) may also include a cavity for receiving the gas pressure cartridge (148), in which the gas pressure cartridge (148) is inserted and then with a lid, which then forms part of the valve (120), closed, for example screwed ,
  • the lid must for this purpose include an opening through which the gas pressure cartridge (148) can be opened or from which the head of the gas pressure cartridge (148) protrudes.
  • the gas pressure cartridge (148) with the valve (120) and the discharge pipe (130) form a solid component.
  • the displaceable valve (120) with the gas pressure cartridge (148) is pushed into the pressure chamber (158).
  • the openings (112) in the cartridge walls (103) through the passages (134) in the valve (120) are opened and interconnected.
  • the gas pressure cartridge (148) is pushed onto the dome (152) and thereby opened.
  • the pressure in the pressure chamber (158) then loads from the gas pressure cartridge (148) and propagates through the slots (162) into the bottom area of the cartridges (101).
  • a seal (not shown), which preferably separates the cartridge contents from the pressure chamber (158) in a gas-tight manner, is arranged on the delivery piston (110). The pressure from the pressure chamber (158) must therefore not be able to pass between the delivery pistons (110) and the cartridge walls (103) into the front part of the cartridges (101).
  • the invention thus also relates to a multicomponent cartridge system with gas cartridge (48, 148) in which the opening (12, 112) of the cartridges (1, 101) is forcibly in time synchronized with the opening of the gas cartridge (48, 148).
  • a significant advantage of the cartridge system according to the invention is that the drive means compressed gas can already be contained in the cartridge system and that synchronously with the opening of the cartridges (1, 101) and the gas cartridge (48, 148) is opened. As a result, a maximum simplification of the operation of the cartridge system is achieved.
  • the user is with the cartridge system according to the invention a device available that can be operated quickly, easily and safely.
  • the bearings (22) or the discharge tube (130) can be arranged as an advantageous embodiment in the plastic art usual latching device, for example in the form of movable in one direction pins that fix the discharge tube (30, 130) in the application position and turning back of the dispensing tube (30, 130) from the application position.
  • a further advantageous embodiment may be that on the underside of the valve (20, 120) in the plastic technology usual locking devices are mounted, which prevent turning back or pushing back of the discharge tube (30, 130) from the application position.
  • a static mixer (36, 136) is arranged inside the discharge pipe (30, 130). It can also be provided that a valve device (42) is arranged on the discharge pipe (30, 130) above the connection point to the valve (20, 120). With this valve device (42), the discharge rate of the flowable material can be regulated.
  • a handle on the cartridges (1, 101) is arranged, which is preferably folded out.
  • the cartridge system can be easily held and guided by the user.
  • the invention also provides a method for opening the cartridge system and activating the drive device, which is characterized in that the pump cartridge head (5, 105) or the cartridge heads (5, 105) opposite to a rotatable valve (20) arranged discharge tube (30, 130) in the direction of the cartridge head (5, 105) with aciner Auatragoö réelle (26, 38, 138) is bie the discharge tube (30, 130) sonkrecht or approximately perpendicular to the or the axes of the cartridge (1, 101) or the cartridges (1, 101) and the discharge opening (26, 38, 138) is oriented opposite to the cartridge head (5, 105) or the cartridge heads (5, 105), or the discharge tube (30, 130) into a nozzle (24, 124) is inserted or screwed into a displaceable valve (120), wherein the openings of the valve (20, 120) with openings (12, 112) of the cartridge head (5, 105) or the cartridge heads (5, 105) , respectively connect the cartridge wall (3, 103) or cartridge walls (3, 103) and thereby
  • the cartridge system according to the invention is used for packaging, storage and application of pasty bone cements, dental Mehrkornponentenzurened, adhesives, sealants, cosmetics and food.
  • the multicomponent cartridge system is particularly suitable for the storage and application of paste-like butyric methacrylate bone cements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Surgical Instruments (AREA)
  • Accessories For Mixers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP11003054.1A 2010-05-04 2011-04-12 Système de cartouche doté d'une cartouche de gaz comprimé Withdrawn EP2384821A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010019223A DE102010019223B4 (de) 2010-05-04 2010-05-04 Kartuschensystem mit Druckgaspatrone

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EP2384821A2 true EP2384821A2 (fr) 2011-11-09
EP2384821A3 EP2384821A3 (fr) 2018-01-10

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US (1) US8608030B2 (fr)
EP (1) EP2384821A3 (fr)
JP (1) JP5269142B2 (fr)
CN (1) CN102235572B (fr)
AU (1) AU2011202039B2 (fr)
CA (1) CA2737732C (fr)
DE (1) DE102010019223B4 (fr)

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AU2011202039A1 (en) 2011-11-24
DE102010019223B4 (de) 2012-02-16
AU2011202039B2 (en) 2013-04-04
US20110272433A1 (en) 2011-11-10
JP2011235102A (ja) 2011-11-24
US8608030B2 (en) 2013-12-17
CN102235572A (zh) 2011-11-09
CA2737732C (fr) 2014-05-27
DE102010019223A1 (de) 2011-11-10
CA2737732A1 (fr) 2011-11-04
EP2384821A3 (fr) 2018-01-10
JP5269142B2 (ja) 2013-08-21

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