The present invention concerns a process as well an apparatus/system for enabling the packaging of a powder, in particular an API, in a contained and GMP manner, without the requirement of a clean room around the filling area. Furthermore, the present invention concerns the use of an apparatus, and process, for pharmaceutical powders and/or for specific pharmaceutical packaging processes.
The aim of the invention is to set out a process and an apparatus, with which powder, preferably pharmaceutical powder, can be packaged in at least approximately clean room conditions, without the need to set up the proposed apparatus in a clean room.
With regard to the process and apparatus, these aims are achieved with the features disclosed herein. Advantageous further embodiments of the invention are set out herein as well. The framework of the invention includes all combinations of at least two of the features disclosed herein. In order to avoid repetition, features disclosed in relation to the process should also apply and be claimable in relation to the apparatus. Equally, features disclosed in relation to the apparatus should also apply and be claimable in relation to the process.
More particularly, a process is claimed which can be read in connection with the enclosed process description. While the disclosure recites a set of steps, this does not limit the scope of the invention, rather, protection is sought for each combination of two or more process steps that may become obvious from the enclosed process description.
The full disclosure (description, claims and figures) of the European patent application with the application reference number EP 0 801 793 2.8, the priority of which is being claimed, should apply as forming part of the disclosure of the present application, in particular in that at least any one feature of the present application should be combinable and claimable with any one feature of the present application and/or EP 0 801 793 2.8. Thus, EP 0 801 793 2.8 is incorporated herein by reference.
The invention is based on the concept of using a DCS (drum containment system) glove box, also claimed as an apparatus, for filling a powder with a mean particle diameter in a range between around 10 μm and around 1000 μm. This is taken to mean an apparatus which has a lower section for holding a drum comprising a first bag, and an upper section, which can be reached into manually with the aid of at least one, preferably with the aid of four, more particularly detachable sealed gloves in order, as will be explained later, to close a second bag and the first bag surrounding the second bag. Ideally the powder to be filled is exclusively in contact with the second bag and the first bag forms a second protective covering, where by the first bag and the second bag are surrounded by the apparatus, which then forms an overall protective covering and/or barrier, preferably exposed to an under pressure (negative pressure) and/or an over pressure (positive pressure).
The process and device are particularly suitable for filling powder, more particularly API powder, with a particle size of between 1 and 1000 μm. Preferably the density of the poured powder is between 0.1 and 1 kg/dm3.
It is particularly preferable if a dosing device forms part of the apparatus, as described, for example in WO 2007/088022 A1 by the applicant. The dosing device is preferably arranged in such a way that from it, emerging more particularly as a result of vibration, powder within the DCS glove box can flow into the second bag formed by the hose-like continuous liner. The content of the disclosure of WO 2007/088022 A1 is incorporated herein by reference and should, with regard to possible advantageous embodiments of the dosing device, apply as disclosed as part of the subject matter of the present application.
Preferably the dosing device operates on a low pressure basis in order to attract powder by way of suction. The unloading of the powder/filling of the second bag preferably takes place by way of vibration, which allows precise dosing of the powder. It is particularly preferable if a dryer is arranged upstream of the dosing device, from which the powder is transferred into a mill, more particularly an online conical mill, which is preferably arranged above the PTS feeder. From the mill the powder is then sucked in by the dosing device. The core of the process is that the powder is filled into a continuous liner, from which the second bag, surrounded by the first bag, is formed by the closing and separation of the remaining continuous liner. It is particularly preferable if the device comprises at least one inlet and/or at least one outlet volatile particle filter, more especially an HEPA particle filter, in order to avoid contamination of the surrounding area and/or the interior of the apparatus.
The process in accordance with the invention comprises the following steps:
Initially a first bag of flexible packaging material is provided, preferably within a drum, more particularly through insertion of the drum into the lower section of the DCS glove box. It is particularly expedient if doors corresponding to this are provided and the lower section of the DCS glove box is closed on all four sides after closing the doors. Alternatively the lower section is realized without doors, preferably with the front side open. Preferably, after opening the drum the first bag is attached on a lower outlet, which projects into the lower section of the DCS glove box starting from the upper section. For this the operating gloves of the upper section of the apparatus are used.
Thereafter, the continuous liner, closed at its lower end, is passed from the upper section of the DCS glove box through the lower outlet thereof into the first bag so that a second bag is provided within the first bag preferably located within the drum. The second bag is then filled with the powder, very particularly preferably via an upper outlet in the upper section of the DCS glove box. Placing the second bag into the first bag preferably takes place manually by way of the gloves, but alternatively can take place automatically through starting the filling procedure. Particularly preferably a dosing device, as described in said PCT application, is used for filling/dosing. After the filling procedure the second bag is closed and separated from the remaining continuous liner, which preferably has already been closed again at its lower end. The first bag, which fully surrounds the second bag, is then closed, and preferably closing of the optionally provided drum in the lower section of the DCS glove box takes place before the first bag and the second bag, preferably together with the drum, are removed from the lower section of the DCS glove box, preferably through a, preferably lateral, outlet door which differs from the inlet door. Preferably, for facilitated removal of the drum, a roller mechanism is provided.
The invention also relates to an apparatus, i.e. a DCS (drum containment system) glove box, for implementing the process described above. The apparatus is characterised by an upper section, comprising at least one pair of gloves, in which by way of the at least one pair of gloves, which is preferably permanently, but in a replaceably connected in a sealing manner with a housing, intervention can take place, and a lower section, in which a first bag, preferably arranged within a drum, can be accommodated. It is particularly expedient if the apparatus comprises a dosing device as described in the previously cited PCT application. It is particularly expedient if the lower connection, to which the first bag can be attached, is the only connection between the upper section and the lower section, with the continuous liner being passable from the upper section through the lower connection into the lower section. Preferably, the, more particularly, tubular lower connection is within a partition wall which isolates the upper section from the lower section.
In the event of a fault or damage to a continuous liner forming the second bag the DCS glove box prevents contamination of the product and allows the continuous liner to be replaced. The proposed apparatus, more particularly at least the upper section, preferably exclusively the upper section of the DCS glove box is, in a further development of the invention, connected to an air circulating system, which is designed so as to guarantee a high rate of air exchange. Preferably the air flows through volatile particle filters, more particularly HEPA filters, and particularly preferably at a volumetric flow of 100 Nm3/hour, which preferably corresponds to a gas exchange rate of 5 to 10 times per minute (depending on the volume of the upper section). The high rate of gas exchange also prevents powder remaining in and being contaminated in the upper section and thereby guarantees additional product protection.
It is particularly expedient if, at least during the filling procedure, there is a slight over pressure within the upper section of the DCS glove box, which prevents air entering the system from outside, as a result of which the product is optimally protected.
Especially in the case of filling highly toxic products, instead of bringing about a positive pressure, it can, however, be preferable to implement a negative pressure, in relation to the atmosphere, within the upper section in order to thereby rule out contamination of the surrounding area and endangering operating personnel.
It is particularly expedient if the lower section of the DCS glove box is surrounded by three side walls, more particularly arranged perpendicularly to each other, whereby in at least one side wall, preferably in the front wall, doors are provided. Alternatively the front side is open permanently. It is very particularly expedient if the rear side of a perforated plate, connected to a fan with volatile particle filters, more particularly HEPA filters, is sealed, whereby the fan is arranged and designed so that at least during removal of the drum lid and the connection of the first bag with a lower connection of the DCS glove box, an high pressure predominates. An over pressure is also preferred when dividing/separating the first bag. Particularly preferably the air flows at a maximum rate of 0.5 m/sec. Alternatively the lower section can be realized without means for providing over pressure or under pressure.
Particularly preferably the system is CIP-capable and can therefore be cleaned by means of a CIP.
Advantageous further developments of the method and apparatus are set out in the following description of preferred examples of embodiment as well as the drawings. The figures, with the accompanying descriptions, should not only form the entirety of the disclosure content, but individual figures with the accompanying description should also serve as independent disclosure sources.
The figures show in
a to 48c Various views and details of a partially incompletely illustrated DCS glove box.
In the figure the same elements and elements with the same function are marked with the same reference symbol.
In
On the front of the apparatus in the plane of the drawing there are two pivoting doors for opening and closing the lower section 3 so that a drum 8 with a first bag 9 can be inserted into the lower section 3 from the front side, using a lift mechanism 10 for lifting the drum 8 with the first bag 9. Alternatively there are no doors on the front side. Preferably then the front side is permanently open.
Passing through the partition wall 4 is a lower outlet 11 (connection) to the outer circumference of which the first bag 9 can be attached. The lower outlet 11 is the only connection between the upper and the lower section 2, 3.
At a distance from the lower outlet 11 is an upper outlet 12 (connection), which projects into the upper section 2. Via the upper connection 12 the powder to be filled can be supplied, preferably by a dosing device, which is not shown, more particularly a PTS feeder.
The free end 13 of the upper outlet 12 is surrounded by a continuous liner 14 which is closed at the bottom. To close the continuous liner 14 a clip 15 or a cable binder is provided. By closing the continuous liner 14 a second bag 16 is formed from the continuous liner 14 in a lower section into which the upper outlet 12 projects.
The upper outlet 12 is surrounded by a tubular bearing structure 17 on the outer circumference of which the folded continuous liner, which preferably when unfolded is of a length of between 10 and 50 m, preferably around 30 m, is held by means of a, more particularly elastic, clamping ring.
In order to fill the first bag 9, the drum 8 is initially inserted from the front side into the lower section 3, which is delimited by three side walls, a base and the partition wall 4. A lid 18 of the initially closed drum 8 is opened within the lower section 3, as indicated in
Thereafter, as shown in
After attaching the new first bag 9 to the outer circumference of the lower, tubular outlet 11, more specifically in an upper position 20, even more specifically in an upper circumferential groove 22 by means of the O-ring 21, the situation as shown in
In the next step of the process the drum 8 and with it the first bag 9 are moved by means of the lift mechanism 10 upwards in the plane of the drawing in the direction of the partition wall until an upper circumferential edge 27 of the drum 8 is in contact with the lower side of the partition wall 4. The previously described process is shown in both
Joint consideration of
As can be seen in
In a next step of the process, shown in
Preferably during the filling procedure there is an over pressure in the lower section of the drum 8, related to atmospheric pressure, and within the upper section 2 outside the continuous liner 14 alternatively a low pressure or high pressure related to atmospheric pressure. Preferably, within the continuous liner 14 there is a certain high pressure, also related to atmospheric pressure, during the filling procedure.
From
Once the required filling weight has been reached, the continuous liner 14 is closed with a clip 15 at each of two points 45, 46 at distance from each other, as can be seen in
In a following step of the process, the result of which can be seen in
In a following step which is illustrated in
Thereafter, as shown in
Below, with the aid of
In order to do this a (new) continuous liner 14 within a first bag 9, in which an O-ring seal 30 is also contained, is moved to the lower section 3 of the apparatus 1 through the front doors. As can be seen in
As can be seen in
The remainder 24 is then taken to the waste container 5 using the gloves so that a connection is created between the upper section 2 and the first bag 9 and so that the O-ring seal 30 and the new continuous liner 13 can be removed through the lower connection 11 and/or moved into the upper section 2. From
Then, as shown in both
In a following step, shown in
In a subsequent step shown in
In a following step shown in
The views in accordance with
b shows a section of the dosing unit 34 with a powder supply line 53, pump chamber 37, low pressure connection 35, filter element 36, oblique pipe 38, vibrator 39 and closing mechanism 40 and/or valve.
c shows the arrangement of a preferably provided roller mechanism 41 for facilitated removal of a drum 8.
c shows the position of two volatile particle filters, namely an inlet air volatile particle filter 54 and an outlet air volatile particle filter 55, preferably both HEPA filters, by means of which air circulation in the upper section 2 of the apparatus 1 is brought about.
Number | Date | Country | Kind |
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08017932.8 | Oct 2008 | EP | regional |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP09/07338 | 10/13/2009 | WO | 00 | 4/14/2011 |