EP2404864A1 - Ampoule breaker - Google Patents

Abstract

The device has a vial support (6) comprising a hollow space (3) and an opening (5) arranged on bottom of the vial support. The vial support is arranged at an open bottom in an external container (7). A vial connector (1) is provided with dimensions of a vial head (2) such that the vial head is loosely arranged in the connector. External container walls comprise a deformable region above the vial support. The deformable region allows tilting of the external container when the vial head is held in the vial connector, and allows the vial head to be broken off from a vial (4). An independent claim is also included for a cartridge system comprising a cement cartridge.

Description

The invention relates to a device for opening ampoules comprising an outer container, in which a closed ampoule is arranged with an ampoule body and an ampoule head, and comprising a cavity in the region of the ampoule head, wherein the cavity comprises at least one opening and a connection to the ampoule.

Thus, the invention provides a robust apparatus for storing and opening monomer vials of vacuum cementing systems for polymethyl methacrylate bone cements pre-filled with cement powder and monomer liquid and provided to the medical user as full-pre-pack vacuum cementing systems.

PMMA bone cements have been known for decades and are based on the fundamental work of Sir Charnley ( Charnley, J .: Anchorage of the femoral head prosthesis of the shaft of the femur. J. Bone Joint Surg. 42 (1960) 28-30 .). The basic structure of the PMMA bone cements has remained basically the same since then. PMMA bone cements consist of a liquid monomer component and a powder component. The monomer component generally contains the monomer methyl methacrylate and an activator (N, N-dimethyl-p-toluidine) dissolved therein. The powder component consists of one or more polymers prepared on the basis of methyl methacrylate and comonomers such as styrene, methyl acrylate or similar monomers by polymerization, preferably suspension polymerization, an X-ray opaque and the initiator dibenzoyl peroxide. When the powder component is mixed with the monomer component, a plastically deformable dough is formed by swelling the polymers of the powder component in the methyl methacrylate. In mixing the powder component with the monomer component, the activator reacts N, N-dimethyl-p-toluidine with dibenzoyl peroxide to form radicals. The radicals formed initiate the radical polymerization of the methyl methacrylate. As the polymerization of methyl methacrylate progresses, the viscosity of the cement paste increases until it solidifies.

Polymethyl methacrylate bone cements may be mixed in suitable mixing cups by means of spatulas by mixing the cement powder with the monomer liquid. A disadvantage of this approach that air pockets may be present in the formed cement dough, which may later cause a destabilization of the bone cement. For this reason, the mixing of bone cement powder with the monomer liquid in vacuum mixing systems is preferred because air entrainment from the cement paste is largely removed by mixing in a vacuum and thus optimum cement quality is achieved ( Breusch SJ et al .: The state of cementing technology in Germany. Z Orthop. 1999, 137: 101-07 ). Vacuum mixed bone cements have significantly reduced porosity and therefore exhibit improved mechanical properties. A variety of vacuum cementing systems have been disclosed, of which the following are by way of example: US 5,624,184 . US 4,671,263 . US 4,973,168 . US 5,100,241 . WO 99/67015 A1 . EP 1 020 167 A2 . US 5,586,821 . EP 1 016 452 A2 . DE 36 40 279 A1 . WO 94/26403 A1 . EP 0 692 229 A1 . EP 1 005 901 A2 . US 5,344,232 ,

A further development are cementing systems in which both the cement powder and the monomer liquid are already packed in separate compartments of the mixing systems and are mixed together in the cementing system just before the cement application ( US 5,997,544 . EP 0 692 229 A1 . US Pat. No. 6,709,149 B1 ). The problem with these systems is the transfer of the monomer liquid in the cement powder and the complete mixing of these two components, so that a homogeneous cement dough is obtained, in particular must not contain nests on not wetted by the monomer liquid cement powder. The Optipac ™ (Biomet Switzerland) full-prep mixing system currently on the market in Europe uses simple tubes placed laterally in the lower part of the cartridge, which pierce the cartridge wall, to apply the monomer liquid approximately in the middle of the cement powder sucked from the vacuum of aluminum composite bags in the cement powder.

Aluminum composite bags have only been known for the packaging and storage of monomer liquid for a few years. Very good experiences with respect to the storability of monomer liquid are available with glass ampoules. Glass ampoules have been used successfully for decades for conventional polymethyl methacrylate bone cements. Glass ampoules have in addition to the perfect tightness also the advantage that they in large numbers too low prices can be made. Therefore, it makes sense to use glass ampoules for packaging and storage of monomer liquid in pre-pack vacuum cementing systems.

In the DE 195 32 015 A1 An apparatus for mixing and dispensing multi-component products is described. In this case, an apparatus for opening ampoules is proposed, which is based on the fact that on the outside of the cement cartridge, a bearing bush is formed, around which can rotate an ampoule holder. The head of the ampoule is inside the bearing bush. When the ampoule holder is rotated around the bearing bush, the ampoule head is sheared off from the ampoule body. Then, the liquid from the ampule into the cartridge can be transferred through an opening in the cartridge wall.

In the WO 97/18031 A1 a device is proposed in which an ampoule is pierced at the bottom and the monomer liquid can then flow through the hollow mixing rod into the cement cartridge.

A system for opening ampoules in cementing systems is disclosed in US Pat EP 1 031 333 A1 disclosed. In this system, by moving the mixing rod against a wedge-shaped device in the cartridge head, the ampoule head is moved obliquely against the ampoule axis, shearing off the ampoule head from the ampoule body. The problem here are the relatively complex structure of the opening device and the risk of jamming of the wedge-shaped device.

In the WO 2010/012114 A1 a device for opening ampoules is described. This is analogous to DE 195 32 015 A1 a rotating mechanism for shearing the ampoule head. The only difference to DE 195 32 015 A1 is that a rotary sleeve is moved against the vial holder and not as in the DE 195 32 015 A1 the ampoule holder against the rotary sleeve.

The main disadvantage of the opening devices shown in the cited published documents is that moving mechanical parts are necessary, which can jam and whose production must meet relatively high standards in terms of manufacturing tolerances to ensure proper functioning.

From the EP 0 079 983 A1 a generic opening device is known in which a glass ampoule is mounted in a pressure-resistant outer container and the head of the glass ampoule can be sheared by the movement of a safety valve engaging in the outer container. For this purpose, the safety valve comprises an elastic sealing sleeve and a pot-like lower part, which engages in the head of the ampoule, in order to be able to shear off these reliably. In addition, the safety valve at its outlet channel handles, such as a coil spring, for actuating the safety valve.

Although the opening of the ampoule is very simple by this structure, the complex structure of the safety valve with the large number of individual components is disadvantageous. On the one hand, this leads to increased costs in the production of such an opening device, on the other hand, the ampoule can be opened accidentally in the manufacture of the opening device.

The object of the invention is the development of a robust, as simple as possible device for storage and opening of monomer vials of Vakuumztementiersystemen for polymethylmethacrylate bone cements, which are already prefilled with cement powder and monomer liquid and can be made available to the medical user as Prepac Vakuumzementiersysteme. The device should consist of a minimum number of parts and be inexpensive to manufacture. The production should also be possible reliably without the risk of destroying the ampoules. From the user without special knowledge, the device must be used quickly and safely for the opening of monomer vials. It must be possible in the device no jamming during the opening of the ampoule.

This object is achieved in that the ampoule head is at least partially disposed in the connection of the cavity to the ampoule and the walls of the outer container comprise at least one deformable region or consist entirely of a deformable material, whereby a tilting of the ampoule against the compound is enabled, and the diameter of the connection is adapted to the dimensions of the ampoule head such that the ampoule head is breakable when the ampoule is tilted against the connection or can be broken off from the ampoule body.

It can be provided that the deformable region encloses the entire circumference of the outer container.

It can also be provided that the inner diameter of the connection is the same size or larger, preferably 0.5-1.5 mm larger and in particular 1 mm larger than the outer diameter of the ampoule head.

A further advantageous embodiment of the invention results when the height 'and the cross section of the cavity are at least as large as the height of the ampoule head to the breaking edge of the ampoule.

It is also advantageous if at the bottom of the cavity above the opening a filter and / or a sieve is arranged.

Furthermore, it can be provided that the device is not visually recognizable deformable by applying vacuum to 90 mbar vacuum.

A particularly advantageous embodiment of the invention provides that the outer container is attached to a hollow body in which the cavity is formed, wherein the hollow body comprises the opening and consists of a solid non-hand deformable material.

It can be provided that the particular cylindrical hollow body is limited on the upper side by an ampoule pad in which the compound is arranged.

Furthermore, it can be provided that the outer container is positively and / or positively, in particular with a thread and / or a snap, attached to the hollow body.

For devices according to the invention it is also proposed that the ampoule has a predetermined breaking point at the connection of the ampoule body to the ampoule head.

It is also preferred that the outer container is formed of rubber-elastic plastic and / or that the outer container is formed bellows-like at least in one area.

In order to further simplify the production, it may further be provided that the outer container, the ampoule and / or the connection are rotationally symmetrical, in particular cylindrical. A further, particularly simple embodiment of the invention provides that the outer container is a cylinder jacket open on both sides, in particular a heat-shrinkable tube, which connects the ampoule and the hollow body to one another in a gastight manner.

The invention also proposes a cartridge system comprising a device according to one of the preceding claims and a cement cartridge which is connected to the opening via a conduit.

It can be provided that the device and the cement cartridge are arranged on a foot part and the device is mounted on the foot part such that liquid due to gravity and / or due to a differential pressure from the open ampoule through the cavity and the opening in the line flowing in the foot part.

The invention is therefore based on the surprising finding that a movable outer container can be used to open an ampoule stored therein when the ampoule head is fixed against the movement of the outer container. This achieves in the simplest way that the ampoule body can be moved against the ampoule head, whereby the ampoule head breaks or breaks off from the ampoule body.

In its simplest embodiment, an ampoule with the ampoule head is loosely placed in a holder with a cylindrical bore below which there is a larger cavity with a hole. A flexible outer container is placed over the ampoule and the holder and fixed gas-tight at least on the holder. The tight fixation on the bracket is sufficient if the flexible outer container is a hollow cylinder closed on one side. If the outer container is a cylinder open on both sides, such as a heat-shrinkable tube, a tight fixing of the outer container to the ampoule must also be provided.

The structure is thereby particularly simple and inexpensive to implement. At the same time, the operation is simple and safe. Even in difficult circumstances, such as surgical operations, the application is easy and even by unskilled assistants readily possible.

In order to prevent unwanted bending and thus prevent unwanted opening of the ampoule, it can be provided that a rigid sleeve is arranged over the flexible region of the outer shell.

This sleeve prevents tilting of the ampoule and must be withdrawn before use.

The fixation of the ampoule head can be firmly connected to a cartridge system, so that a user of the cartridge system, which holds this in one hand, the ampoule easily with the other hand by tilting the outer container, or the ampoule can open. This will make the entire cartridge system ready for use.

As a cavity in the context of the present invention, a simple line is to be understood, which need not necessarily be large enough to accommodate the broken ampoule head. The transition from the cavity to the opening can then no longer be distinguished. The transition from the connection to the cavity can also be stepless. It only needs to be taken to ensure that the broken ampoule head does not completely prevent the leakage of the contents of the ampoule. However, a cavity sufficiently sized to receive the ampoule head, or even capable of allowing rotation of the broken ampoule head in the cavity, is particularly advantageous because then the liquid contents of the broken ampoule head can flow out and so forth Use is usable.

The compound is mainly used to fix the ampoule head against a tilting movement of the ampoule. In addition, a fluid connection to the cavity, or to the opening and the optionally connected line to be made.

A negative pressure in the cavity and in the interior of the outer container can also be generated via the opening. As a result, the contents of the ampoule can also be sucked through the opening, or more precisely pressed through the higher pressure in the ampoule or from the outside. In addition, when the device is in a suitable position, gravity can also be used to allow the contents of the ampoule to flow through the connection, the cavity and the opening.

Figur 1:

eine schematische Querschnittansicht in Längsrichtung einer erfindungsgemäßen Vor- richtung mit verschlossener Ampulle;

Figur 2:

eine schematische Querschnittansicht in Längsrichtung einer alternativen erfindungs- gemäßen Vorrichtung mit geöffneter Ampulle;

Figur 3:

eine schematische Querschnittansicht der erfindungsgemäßen Vorrichtung nach Figur 2 mit herabgefallenem Ampullenkopf; und

Figur 4:

eine schematische Querschnittansicht einer erfindungsgemäßen Vorrichtung, in einem erfindungsgemäßen Kartuschensystem.

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

FIG. 1:

a schematic cross-sectional view in the longitudinal direction of a device according to the invention with closed ampoule;

FIG. 2:

a schematic cross-sectional view in the longitudinal direction of an alternative device according to the invention with open ampoule;

FIG. 3:

a schematic cross-sectional view of the device according to the invention FIG. 2 with dropped ampoule head; and

FIG. 4:

a schematic cross-sectional view of a device according to the invention, in a cartridge system according to the invention.

FIG. 1 shows a schematically illustrated cross-sectional view of a device according to the invention with a compound (1) in which an ampoule head (2) is arranged, wherein the compound (1) connects a cavity (3) with a region in which an ampoule (4) is arranged , The ampoule (4) may for example consist of glass, ceramic or another material. On the opposite side of the connection (1) of the cavity (3) has an opening (5) is provided. The connection (1) is for example a cylindrical bore in an ampoule pad (6). The ampoule pad (6) is part of a cylindrical hollow body, in the bottom surface of which the opening (5) is located. Around the ampoule (4) and the cylindrical hollow body around an outer container (7) is arranged. The outer container (7) is connected via a thread (8) with the cylindrical hollow body, or with the ampoule pad (6). For this purpose, an external thread (8) is provided on the cylindrical hollow body and an internal thread is provided on the outer container (7).

The outer container (7) is designed as a closed cylindrical hollow body on one side, which consists of a flexible material, such as rubber. The cylindrical hollow body with the ampoule pad (6), however, consists of a stiff, solid material, such as plastic. The ampoule (4) is placed upside down in the device, so that a liquid content of the ampoule (4) runs out of this when the ampoule head (2) is broken off.

The user of such a device can open the ampoule (4) by tilting or bending the upper portion of the outer container (7) against the ampoule support (6). Since the ampoule head (2) can not be tilted out of the connection (1), it remains in the connection (1) stuck and eventually breaks off or breaks completely. For this purpose, a predetermined breaking point can be provided at the connection from the ampoule head (2) to the ampoule body, in which, for example, the material from which the ampoule (4) is made is particularly thin or scratched. The broken ampoule head (2) falls into the cavity (3). Ideally, the vial head (2) is shaped and weighted to rotate as it descends so that the contents of the vial head (2) can run out of it.

At the same time, the contents of the ampoule (4) pours into the cavity (3), since the cavity (3) is arranged below the ampoule (4). Subsequently, the liquid from the cavity (3) passes through the opening (5) and is available to the user.

In the present case, the device serves for the liquid contained in the ampoule (4) to be subsequently miscible with a cement in a cement cartridge (not shown). For this purpose, the device can be firmly connected to a cartridge system (not shown).

FIG. 2 shows an alternative embodiment of a device according to the invention in a schematic representation. In this device, a portion (19) of an outer container (17) is flexible, while the rest of the outer container (17) is inflexible. An ampoule (14) is in the upper part of the outer container (17). The device shown has already been deformed by a force acting in the figure from the left at the upper end of the outer container (17). As a result of the deformation, an ampoule head (12) of the ampoule (14) is broken off. The ampoule head (12) could not follow the movement of the ampoule (14) because it is in a compound (11) from a cavity (13) to the upper part of the outer container (17) inserted.

The connection (11) is a recess in an ampoule pad (16), which in turn is part of a hollow body, which is arranged below the ampoule (40). The hollow body has a further opening (15). The outer container (17) is connected to the hollow body via a snap (18).

So that the ampoule head (12) does not break off during manufacture or during transport, a rigid sleeve (not shown) may be provided, which is arranged around the outer container (17). This sleeve must then be removed before opening the ampoule (14). The flexible region (19) may be made of a different material than the rest of the outer container (17). Alternatively, it can also be provided that both the flexible region (19) and the outer container (17) consist of the same material, wherein the thickness of the material in the flexible region (19) is less than in the walls of the outer container (17) and thereby better deformability in the flexible region (19) is given.

FIG. 3 shows a schematic representation of the device according to FIG. 2 after the ampoule head (12) has fallen down into the cavity (13). When falling, the ampoule head (12) has rotated due to its shape and nature, so that the contents of the ampoule head (12) run out of this into the cavity (13) and finally through the opening (15) expires from the device. Also, the contents of the ampoule (14) runs from this into the cavity (13), as indicated by the upper arrow. Subsequently, the liquid from the opened ampoule (14) also passes out of the cavity (13) through the opening (15), as indicated by the lower arrow.

The upper part of the device (outer container (17) with ampoule body) is still in an inclined position. The flexible region (19) has thus plastically deformed. Likewise, with elastic deformability of the flexible region (19) with only a short-term force, the upper part but also back to its original position (as in the embodiment according to FIG. 1 and the contents of the ampule (14) would still leak out. So that the ampoule head (12) does not get stuck in the connection (11) in the ampoule support (16), the inner diameter of the connection can be somewhat larger than the outer diameter of the ampoule head (12).

A suitable form of connection may assist in turning the broken ampule head (12) in the cavity (13) so that the contents of the ampule head (12) will drain. The void (13) must be sufficiently large relative to the vial head (12) to allow the vial head (12) to rotate in the void (13). The ampoule head (12) may be pointed and elongated, unlike the vial heads shown in the figures. Likewise it can be provided that the ampoule head (12) breaks not only at one, but at several points, so that the contents of the shards of the ampoule head (12) pours into the cavity (13).

So that no broken pieces emerge through the opening (15), a sieve or a filter (not shown) can be arranged above the opening (15) in the cavity (13).

FIG. 4 shows a schematic representation of a device according to the invention with an unopened ampoule (24), which is arranged in a cartridge system according to the invention.

The closed ampoule (24) is mounted in the upper part of an outer container (27), which is connected via a thread (28) with a hollow body which is fixedly arranged on a foot part (50) of the cartridge system. The foot part (50) and the hollow body of the device can also be constructed as a common molding, for example made of plastic.

In the hollow body, a cavity (23) is arranged. An ampoule head (22) of the ampoule (24), which is mounted upside down in the device, is arranged in a connection (21) from the cavity (23) to the ampoule (24). The connection (21) extends through an ampoule support (26) which limits the cavity (23) up to the ampoule (24). At the bottom of the cavity (23) a filter (60) is placed over an opening (25) intended to separate solid parts, such as shards, from the liquid contents of the ampoule (24). The outer container (27) has a circumferentially comprehensive flexible area (29) on which the outer container (27) is deformable. This makes it possible to cancel the ampoule head (22) by the upper portion of the outer container (27) with the body of the ampoule (24) tilted, or is rotated perpendicular to the axis of symmetry of the ampoule (24).

The opening (25) is connected to a conduit (53) in the foot part (50), which connects the device according to the invention with a cement cartridge (51). The liquid from the ampoule (24) can be conveyed by means of a negative pressure through the conduit (53) in the cement cartridge (51). There, the liquid mixes with the cement powder and the mixture can be expelled with the aid of a delivery piston (52) from the cement cartridge (51) and the cement can be applied. The movement of the delivery piston can also be forced by applying compressed air.

The flexible area (29) can also be realized by a bellows.

A device according to the invention for storing and opening monomer ampoules of vacuum cementing systems can thus be characterized in that a hollow-cylindrical ampoule support (6, 16, 26) forms a connection (1, 11, 21) whose inner diameter is equal to or greater than the ampoule head (2, 12, 22) is that below the ampoule pad (6, 16, 26) or the connection (1, 11, 21), a cavity (3, 13, 23) is present whose height is at least equal to the length of the ampoule head (2 , 12, 22) to the breaking edge of the ampoule (4, 14, 24) and whose cross section is so large that the from the ampoule (4, 14, 24) at the broken ampoule head (2, 12, 22) horizontally on the Bottom of the cavity (3, 13, 23) may be that on the underside of the cavity (3, 13, 23) an opening (5, 15, 25) is arranged is that connects the cavity (3, 13, 23) with the cement cartridge (51), and that an outer container (7, 17, 27) formed in the longitudinal direction elastically deformable as a hollow cylinder closed on one side with the ampoule support (6, 16, 26) is connected so that the ampoule head (2, 12, 22) in the connection (1, 11, 21) over the cavity (3, 13, 23) in the ampoule pad (6, 16, 26) is located. It can be provided that the device is not deformed visually recognizable by applying vacuum to 90 mbar vacuum.

The outer container (7, 17, 27) is elastically deformable in the longitudinal direction by mechanical force. This means that the ampoule pad (6, 16, 26) facing away from the closed end of the outer container (7, 17, 27) by a simple movement perpendicular to its axis by a few degrees is movable. The in the outer container (7, 17, 27) located ampoule (4, 14, 24) is thus forcibly moved with. The ampoule head (2, 12, 22) is located in the hollow cylindrical connection (1, 11, 21) of the ampoule pad (6, 16, 26). The ampoule pad (6, 16, 26) is not rubbery. This means that the ampoule body is sheared by movement of the outer container (7, 17, 27) against the non-moving ampoule head (2, 12, 22). The inner diameter of the hollow-cylindrical ampoule pad (6, 16, 26) is larger than the ampoule head (2, 12, 22). The sheared-off vial head (2, 12, 22) falls through the vial support (6, 16, 26) into the cavity (3, 13, 23) and gives the connection (1, 11, 21) to the vial support (6, 16, 26 ) free for the inflowing monomer liquid. This cavity (3, 13, 23) has a height greater than the entire length of the separated ampoule head (2, 12, 22). The cross section of the cavity (3, 13, 23) is so large that the sheared ampoule head (2, 12, 22) can lie horizontally at the bottom of the cavity (3, 13, 23). The height of the cavity (3, 13, 23) is important so that the separated ampoule head (2, 12, 22) in its fall through the connection (1, 11, 21) in the ampoule pad (6, 16, 26) so can rotate so that it can lie horizontally on the bottom of the cavity (3, 13, 23). As a result, the volume of monomer liquid present in the ampoule head (2, 12, 22) can run out. It must be noted, however, that depending on the surface tension of the respective monomer liquid, the cross-section of the break point between the ampoule head (2, 12, 22) and the ampoule body is dimensioned so that a trouble leakage of the ampoule (4, 14, 24) at Gravity is ensured on the monomer liquid. The geometry of the ampoule (4, 14, 24) must be adapted to the surface tension of the monomer liquid. The outflow of the monomer is made possible by the opening (5, 15, 25) arranged in the bottom of the cavity (3, 13, 23).

The user only has to briefly move the end of the outer container (7, 17, 27) by a few degrees perpendicular to the cylinder axis in order to open the ampoule (4, 14, 24). The breaking of the ampoule (4, 14, 24) can be easily followed by the bursting sound, but is also noticeable by the sudden overcoming of the resistance. It is not essential in which direction the outer container (7, 17, 27) is moved perpendicular to the cylinder axis. It is only essential that a relative movement of the upper end of the outer container (7, 17, 27) takes place perpendicular to the ampoule axis.

Significant advantages of the device according to the invention are that no rotatable or displaceable mechanical parts are necessary, that no jamming or jamming of the device is possible and that no high demands in terms of manufacturing tolerances for the production must be met. There is only a minimum of parts necessary. The operation is extremely simplified and can also be carried out without problems by untrained users.

The outer container (7, 17, 27) may have a ribbing on the inside parallel to the cylinder axis. As a result, an additional shock absorption of the ampoule (4, 14, 24) during transport is possible.

It is also advantageous that the ampoule pad (6, 16, 26) is not elastically deformable.

It is also advantageous that the outer container (7, 17, 27) is non-positively and / or positively connected to the ampoule pad (6, 16, 26). The outer container (7, 17, 27) can be connected by a simple thread (8, 28) with the ampoule pad (6, 16, 26). It is also possible to form a snapping (18) on the outer container (7, 17, 27), which can be snapped with a circumferential ridge on the vial support (6, 16, 26). It is also possible to put the outer container (7, 17, 27) on the ampoule support (6, 16, 26), so that a fixation by the restoring force of the rubber-elastic outer container (7, 17, 27) is effected.

The outer container (7, 17, 27) is preferably formed of rubber-elastic plastic. The outer container (7, 17, 27) may optionally be formed bellows. The outer container (7, 17, 27) may be formed of rubber-elastic material so that only in the height of the break point of the ampoule (4, 14, 24) such a thin wall (19, 29) is present that this is elastomeric and that the rest of the outer container (7, 17, 27) has a thicker wall, which is no longer elastically deformable. The deformable regions (19, 29) are then thinner than the walls of the outer container (7, 17, 27).

The invention also provides a method for opening ampoules, which is characterized in that the outer container (7, 17, 27) with the closed ampoule (4, 14, 24) from its cylinder axis by movement of the ampoule pad (6, 16, 26 ) is moved opposite the end of the outer container (7, 17, 27) so that the ampoule body is moved against the inside of the ampoule support (6, 16, 26) fixed ampoule head (2, 12, 22), whereby the ampoule head (2 , 12, 22) is broken by the ampoule body.

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, 11, 21

connection

2, 12, 22

ampoule tip

3, 13, 23

cavity

4, 14, 24

ampoule

5, 15, 25

opening

6, 16, 26

ampoules edition

7, 17, 27

outer container

8, 28

thread

18

Schnappung

19, 29

deformable area

50

footboard

51

cement cartridge

52

delivery piston

53

management

60

filter

Claims (15)

Device for opening ampoules comprising an outer container (7, 17, 27) in which a closed ampoule (4, 14, 24) with an ampoule body and an ampoule head (2, 12, 22) is arranged, and comprising a cavity (3 , 13, 23) in the region of the ampoule head (2, 12, 22), wherein the cavity (3, 13, 23) at least one opening (5, 15, 25) and a connection (1, 11, 21) to the ampoule ( 4, 14, 24), characterized in that
the ampoule head (2, 12, 22) is arranged at least in regions in the connection (1, 11, 21) of the cavity (3, 13, 23) to the ampoule (4, 14, 24) and the walls of the outer container (7, 17 , 27) comprise at least one deformable region (19, 29) or consist entirely of a deformable material, whereby a tilting of the ampoule (4, 14, 24) against the connection (1, 11, 21) is made possible, and the diameter of the Connection (1, 11, 21) is adapted to the dimensions of the ampoule head (2, 12, 22) such that the ampoule head (2, 12, 22) upon tilting the ampoule (4, 14, 24) against the connection ( 1, 11, 21) is breakable or breakable from the ampoule body. Apparatus according to claim 1, characterized in that
the deformable region (9, 19, 29) surrounds the entire circumference of the outer container (7, 17, 27). Apparatus according to claim 1 or 2, characterized in that
the inner diameter of the connection (1, 11, 21) is equal to or greater, in particular 1 mm larger than the outer diameter of the ampoule head (2, 12, 22). Device according to one of the preceding claims, characterized in that the height and the cross section of the cavity (3, 13, 23) at least as large as the height of the ampoule head (2, 12, 22) up to the breaking edge of the ampoule (4, 14, 24). Device according to one of the preceding claims, characterized in that at the bottom of the cavity (3, 13, 23) above the opening (5, 15, 25) a filter (60) and / or a sieve is arranged. Device according to one of the preceding claims, characterized in that the device is not visually recognizable deformable by applying vacuum to 90 mbar vacuum. Device according to one of the preceding claims, characterized in that the outer container (7, 17, 27) is fixed to a hollow body, in which the cavity (3, 13, 23) is formed, wherein the hollow body, the opening (5, 15, 25) and consists of a solid non-hand deformable material. Apparatus according to claim 7, characterized in that
the particular cylindrical hollow body on the upper side by an ampoule pad (6, 16, 26) is limited, in which the compound (1, 11, 21) is arranged. Device according to one of claims 7 or 8, characterized in that
the outer container (7, 17, 27) is positively and / or positively, in particular with a thread (8, 28) and / or a snap (18) attached to the hollow body. Device according to one of the preceding claims, characterized in that the ampoule (4, 14, 24) at the connection of the ampoule body to the ampoule head (2, 12, 22) has a predetermined breaking point. Device according to one of the preceding claims, characterized in that
the outer container (7, 17, 27) is formed from rubber-elastic plastic and / or that the outer container (7, 17, 27) at least in a region (19, 29) is formed bellows-shaped. Device according to one of the preceding claims, characterized in that
the outer container (7, 17, 27), the ampoule (4, 14, 24) and / or the connection (1, 11, 21) are rotationally symmetrical, in particular cylindrical. Device according to one of claims 7 to 12, characterized in that the outer container (7, 17, 27) is a cylinder jacket open on both sides, in particular a shrink tube, which connects the ampoule (4, 14, 24) and the hollow body gas-tight. A cartridge system comprising a device according to any one of the preceding claims and a cement cartridge (51) connected to the port (5, 15, 25) via a conduit (53). Cartridge system according to claim 14, characterized in that the device and the cement cartridge (51) are arranged on a foot part (50) and the device is mounted on the foot part (50) in such a way that liquid due to gravity and / or due to a differential pressure the opened ampoule (4, 14, 24) through the cavity (3, 13, 23) and the opening (5, 15, 25) in the conduit (53) in the foot part (50) flows.

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