Unit for the sterile filling of a final basic container with contents designed for the biopharmaceutical field

Abstract

A sterile filling unit, of a basic container with contents that can be distributed in a fluid form and that is originally located in a source container in a sterile manner, includes a sterile chamber with at least one sterile entry port and/or outlet; a sterile fluid transfer and filling line with an intake and an outlet, such that for a filling stage the line passes through the wall of the sterile chamber in a sterile manner, with the intake located outside of the sterile chamber in sterile fluid communication with the source container, with the filling element at the outlet located inside the sterile chamber and positioned to be operating; and a unit that can introduce the disposable internal elements that, in a stage prior to the filling stage, were located outside of the sterile chamber, into the interior of the sterile chamber in a sterile manner.

Claims

1. A sterile filling unit configurable to fill, in a sterile manner, a final basic container with contents that can be distributed in a fluid form, the contents being originally located in a source container, the sterile filling unit comprising: a sterile chamber that has at least one sterile entry port and/or outlet, the sterile entry port and/or outlet having a first door providing an opening, the first door being made in a wall of the sterile chamber; at least one sterile pocket having a wall that limits a sterile inner space, the wall of the at least one sterile pocket being equipped with a second door providing a wall opening, the second door of the at least one sterile pocket being complementary to the first door of the sterile chamber and being structurally mate-able to the first door of the sterile chamber; a buffer storage bag located in the sterile inner space of the at least one sterile pocket; and a sterile fluid transfer and filling line, the sterile fluid transfer and filling line having an intake that is adapted to be in sterile fluid communication with the source container, the sterile fluid transfer and filling line having at least one outlet, the sterile fluid transfer and filling line comprising an engaging communication pipe segment comprising i) a first end, located outside the at least one sterile pocket, and ii) a second end, located inside the at least one sterile pocket, the second end having a downstream end part at an outlet of the engaging communication pipe segment, wherein elements of the sterile fluid transfer and filling line located internal to the sterile inner space of the at least one sterile pocket, including the buffer storage bag and the downstream end part of the engaging communication pipe segment, have overall dimensions that allow passage through the second door of the sterile chamber when the at least one sterile pocket is structurally mated to the sterile chamber so that, with the first and second doors being in the open state, the at least one sterile pocket provides for a sterile transfer of the elements of the sterile fluid transfer and filling line located internal to the sterile inner space of the at least one sterile pocket, including the buffer storage bag and the downstream end part of the engaging communication pipe segment, between the sterile inner space of the at least one pocket and an interior of the sterile chamber, wherein, for a filling stage, the elements of the sterile fluid transfer and filling line located internal to the sterile inner space of the at least one sterile pocket, including the buffer storage bag and the downstream end part of the engaging communication pipe segment, are adapted to pass, via the first and second doors, through the wall of the sterile chamber in a sterile manner, with i) the intake of the sterile fluid transfer and filling line being located outside of the sterile chamber and adapted to be in sterile fluid communication with the source container, ii) the buffer storage bag being located inside the sterile chamber upstream of the at least one outlet of the sterile fluid transfer and filling line, and iii) the at least one outlet of the sterile fluid transfer and filling line being located inside the sterile chamber and positioned to fill the final basic container with the contents, and wherein the at least one sterile pocket and the elements of the sterile fluid transfer and filling line located internal to the sterile inner space of the at least one sterile pocket are of the disposable type for the filling in question.

2. The sterile filling unit according to claim 1, further comprising the source container, connected in a sterile manner to the intake of the sterile fluid transfer and filling line.

3. The sterile filling unit according to claim 1, further comprising the source container, the intake of the first end of the engaging communication pipe segment being in sterile fluid communication with the source container.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Several embodiments of the invention are now described using drawings, in which:

(2) FIG. 1 is a perspective view of a first embodiment of the invention in which an individual unit of external means and elements and an individual unit of different internal means and elements are used for producing a sterile fluid transfer and filling line from contents that are originally located in a source container and up to one of the final containers that are located in a sterile chamber;

(3) FIG. 2 is a perspective view of the first embodiment of the invention that is shown in FIG. 1, in which the internal means and elements that are originally located in the individual unit are arranged inside the sterile chamber, and the external means and elements are connected to the source connector;

(4) FIG. 3 is a perspective view of a second embodiment of the invention in which the individual unit of external means and elements and the individual unit of internal means and elements form a single individual unit that is used for producing a sterile fluid transfer and filling line from contents that are originally located in a source container and up to one of the final containers that are located in a sterile chamber;

(5) FIG. 4 is a perspective view of the embodiment of FIG. 3 in which the internal means and elements that are originally located in the individual unit are arranged inside the sterile chamber;

(6) FIG. 5 is a perspective view of a third embodiment of the invention in which an individual unit of external means and elements and an individual unit of internal means and elements form a single individual unit that is used for producing a sterile fluid transfer and filling line from contents that are originally located in a source container and up to one of the final containers that is located in a sterile chamber, with the internal means and elements arranged inside the sterile chamber comprising two filling elements and a container for the purposes of testing, traceability, or experimentation;

(7) FIG. 6 is a perspective view of a third embodiment of the invention in which an individual unit of external means and elements and an individual unit of internal means and elements form a single individual unit that is used for producing a sterile fluid transfer and filling line from contents that are originally located in a source container and up to one of the final containers that is located in a sterile chamber, with the final containers here being disposable pockets.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(8) The invention relates to the sterile filling of at least one—and in general a large number—of n final basic containers cf with contents that can be distributed in a fluid form and that are originally located in a source container CS in a sterile manner.

(9) The invention pertains to the biopharmaceutical field; the contents in question are a biopharmaceutical fluid, as defined.

(10) The source container CS can be a pocket that may or may not be flexible and whose volume can be larger or smaller, for example 20 liters to 500 liters or more.

(11) The final container cf can be selected from the group that comprises open or closed containers, vials, syringes, flasks and bottles, and pockets or pocket systems that may or may not be disposable.

(12) The final container cf has a capacity that is a fraction of the capacity of the source container, in particular that has a volume that can be very small.

(13) The object of the invention is the sterile filling process in question, a sterile filling unit that is especially designed for the implementation of the process, an individual unit that, in one embodiment, is used in the process and included in the unit, and, finally, a transfer and filling line that is especially designed for such a sterile filling unit, comprising such an individual unit that is formed from all or part of the means and elements of the transfer and filling line.

(14) The invention provides a sterile chamber 1, having at least one sterile entry port 2a and/or outlet 2b, mated to an opening 2c that is made in a wall 3 of the chamber 1. It involves structurally different doors or the same door that performs different functions, respectively for the introduction into the interior of the chamber 1 or for evacuation from the interior of the chamber 1.

(15) Such a chamber 1 comprises one or more walls 3 that border it. Such a chamber can be large in size and have 3 rigid walls.

(16) The source container CS is located outside of the chamber 1. For their filling, the final containers cf are located inside the chamber 1.

(17) The invention provides a transfer and filling line 4 that is produced by the assembly in sterile communication with different means and elements: communication means 5, distribution means 6, filling elements 7, and, if necessary, one or more other functional means or elements 8.

(18) The communication means 5 are typically selected from the group that comprises pipes, tubes, hoses and the like.

(19) The distribution means 6 are typically selected from the group that comprises pumps and the like.

(20) The filling elements 7 are typically selected from the group that comprises injection needles, nozzles, and the like.

(21) Another functional means or element 8 is, for example, a filtering means, a buffer storage means, or a connection means. According to the embodiments, such a functional means or element 8 is either separated from a final container cf or is at least partly integrated into a final container cf. For example, a final container cf can be a closed pocket that includes intake means of the filling contents.

(22) These different means and elements 5, 6, 7 and 8 are of the sterile fluid type.

(23) The transfer and filling line 4 comprises, once produced, an intake 9 that is designed to be mated in sterile communication with the source container CS.

(24) It comprises at least one outlet and most often a large number of outlets corresponding to a large number of p filling elements 7.

(25) During a filling stage that will be referenced again, the transfer and filling line 4 passes through the wall 3 of the chamber in a sterile manner. The intake 9 is located outside of the chamber 1. The filling elements 7 are located inside the chamber 1 and positioned to be able to be operating relative to the final containers cf.

(26) For this purpose, the chamber 1 is equipped with carrying means 10 of the means and elements 5, 6 and 7 of the transfer and filling line 4 that is located inside the chamber 4. Such carrying means 10 are, for example, hooks, brackets, and support pieces. They are of an adequate number to be able to accommodate any arrangement of the part of the transfer and filling line that is located in the chamber 1. They are positioned in the chamber 1 at any location that is suitable for their use. Such carrying means 10 are in a stationary position or are arranged to move, according to the desired flexibility requirements.

(27) In the means and elements 5, 6 and 7, a distinction is made between so-called internal means and elements OI for the reason that they are located substantially inside the chamber 1 during the filling stage. A distinction is also made between so-called external means and elements OE for the reason that they are located substantially outside of the chamber 1. These external means and elements OE include a so-called engaging communication pipe segment 11 that is able to pass through the wall 3 of the chamber in a sterile manner, either because it passes through a door such as 2a, or otherwise.

(28) In the functional means and element 8, it is possible to make the same distinction between so-called internal functional means and elements OFI and external functional means and elements OFE.

(29) The process comprises a stage or operation in which the final container(s) cf is/are introduced into the interior of the chamber 1 in a sterile manner. It also comprises a stage or operation in which for filling purposes, the final containers cf are structurally mated to the filling elements 7. This structural mating is carried out in any suitable manner to make filling possible. As indicated above, it is provided that communication means 5, distribution means 6, and the internal filling elements 7, OI, are positioned in the chamber 1 so that they can be operating, thanks to carrying means 10.

(30) The process also comprises a filling stage in which the contents of the source container CS are sampled, the contents are passed into the transfer and filling line that is then installed to be operating, and finally, the desired quantity is delivered into the final containers.

(31) According to the invention, at least the internal means and elements OI are selected in such a way that, on the one hand, they have overall dimensions allowing the passage through a door such as 2a, and, on the other hand, they are disposable for the filling in question.

(32) According to one embodiment, the external means and elements OE are also selected in such a way that they are of the disposable type for the filling in question.

(33) According to one embodiment, other internal functional means or elements OFI are also selected in such a way that they have overall dimensions allowing the passage through a door such as 2a and they are disposable for the filling in question. And, if necessary, the external functional means and elements OFE of the disposable type are also selected for the filling in question.

(34) In the process, in a stage prior to the filling stage, internal means and elements OI are used in the sterile state, which are then located outside of the chamber 1. Then, in a subsequent stage of introduction into the chamber 1 of these internal means and elements, also prior to the filling stage, these internal means and elements OI are introduced into the interior of the chamber 1, in a sterile manner.

(35) It follows that once the filling is completed, another filling can be initiated without having to sterilize the interior of the chamber, with the means and elements OI being evacuated in a sterile manner.

(36) The invention can be viewed from several angles.

(37) From a first possible angle, the purpose is to fill all of the n final containers cf, each with the same quantity of contents, in one and the same filling stage.

(38) In this case, a unit of n final containers and p filling elements is used in such a way that the transfer and filling line 4 comprises an intake 9 and p outlets, with p being an integer that is greater than or equal to n.

(39) Then, n final containers cf are introduced into the chamber 1.

(40) Then, the n final containers cf are structurally mated to n filling elements 7.

(41) And then the n final containers are filled.

(42) This embodiment is well suited to the case of a limited number of final containers cf and therefore filling elements 7.

(43) A second embodiment is well suited in the case of a larger number of final containers cf, while the number of filling elements 7 remains limited, with p being less than or equal to n.

(44) With this second embodiment, several successive phases are initiated.

(45) Thus, a number q1 of final containers cf is structurally mated to a number q1 of filling elements 7, with q1 being less than or equal to n, and, as indicated above, in a filling stage, the desired quantity of containers is delivered into each of the q1 final containers.

(46) The q1 final containers cf and the q1 filling elements 7 can then be separated, and while keeping the previously used internal means and elements OI operating, the filling stage is repeated one or more times, respectively with numbers q2, q3, qi of final containers cf. In one embodiment, the numbers q1, q2, q3, and qi are identical. In other embodiments, if appropriate and as required, they are different.

(47) The procedure is thus carried out up to filling the n final containers cf.

(48) In this embodiment, the internal means and elements OI are also of the disposable type for the successive filling stages in question.

(49) From a third angle, the process is such that, in a first phase, a first sterile filling of at least a first final basic container with first contents that are originally located in a first source container CS is initiated. Then, in a second phase, a second sterile filling of at least one second final basic container with second contents that are originally located in a second container source CS2 is initiated.

(50) In the first phase, a first transfer and filling line such as 4 is formed, and after the corresponding filling stage, the first corresponding final containers and the first corresponding filling elements 7 are separated.

(51) In the second phase, a second transfer and filling line of the same type as the first line 4 is formed, but adapted to the second filling, and, after the corresponding filling stage, the second corresponding final containers and the second corresponding filling elements 7 are separated.

(52) Each phase corresponds to the complete filling process. Between the first phase and the second phase, consequently, the internal means and elements OI and OFI of the first transfer and filling line 4 are evacuated to the exterior of the chamber 1 from the interior of the chamber 1, and then, on the spot, the internal means and elements OI and OFI of the second transfer and filling line 4 are introduced into the chamber 1 and from the exterior thereof.

(53) With such an embodiment, it is possible to pass from the first phase to the second phase without sterilizing the interior of the chamber 1 again.

(54) The process also comprises a stage subsequent to the filling stage in which the filled final containers cf are evacuated from the interior of the chamber 1 toward the exterior thereof, in a sterile manner.

(55) From another angle, the procedure for the other internal functional means or elements OFI is carried out in a manner that is analogous to the internal means and elements OI.

(56) According to a possible embodiment, the filling stage or the repetition of filling stages includes at least one operation that consists in filling a container that is different from the final containers cf. Such another container ca can be a container for the purposes of testing, traceability or experimentation. In one embodiment, the filling operation of such another container ca is carried out during the filling stage of one or more final containers cf. In this case, one or more filling elements are especially dedicated to such another container(s) ca.

(57) The sterile filling unit according to the invention comprises the sterile chamber 1, the transfer and filling line 4, and its different means and elements: communication means 5, distribution means 6, filling elements 7, other functional means or elements 8, and also means that can introduce the internal means and elements OI in a sterile manner into the interior of the chamber 1, and, if necessary, the disposable internal functional elements and means OFI that, in a stage prior to the filling stage, were located outside of the chamber 1.

(58) According to a development of the invention, it is provided that in the stage prior to the filling stage, whereas the internal means and elements in the sterile state are located outside of the chamber, a so-called sterile individual unit 12 of internal means and elements is available.

(59) Such an individual unit 12 comprises a so-called sterile pocket 13 of internal means and elements.

(60) The pocket 13 has a wall 14 that limits a sterile inner space 14a.

(61) This wall 14 is equipped with a door 15 that is mated to an opening 15a of the wall 14. The door 15 is complementary to the door 2a, 2b of the chamber 1.

(62) The door 15 includes a flange 15b for removable rigid mating with the chamber 1, itself equipped with a corresponding flange 16b that is part of the door 2a, 2b. The two flanges 15b and 16b are complementary and can be mated rigidly and removably, thanks to mating means and maneuvering means provided for this purpose. Such mating means and such maneuvering means can comprise systems with complementary lugs and grooves, cams and levers or the like, for example. Thus, the individual unit 12 can itself be mated in a rigid and removable manner with the chamber 1, toward the exterior thereof, with the respective doors 15 and 2a, 2b mating.

(63) The door 15 also includes a movable panel (not shown) between a closed state where it works in a complementary manner with the flange 15b by closing the opening 15a and an open state where it is released from the flange 15b by leaving the opening 15a open.

(64) The door 2a, 2b itself also includes a movable panel between a closed state where it works in a complementary manner with the flange 16b by closing the opening 2c and an open state where it is released from the flange 16b by leaving the opening 2c open.

(65) Means for maneuvering the panel of the door 2a, 2b, which opens toward the interior of the chamber 1, are provided. Such maneuvering means can comprise joints, levers, motors, or the like, for example.

(66) Rigid and removable mating means of the panel are also provided on the panel of the door 2a, 2b in such a way that the movement of the latter ensures the same concomitant movement of the latter. Such mating means can comprise magnetic devices or the like, for example.

(67) Thus, once the individual unit 12 is mated to the chamber 1, the panels of the doors 2a, 2b and 15 being in the closed state and their mated panels, it is possible to maneuver the panel of the door 2a, 2b to open it and to bring it into the open state, with the panel being open simultaneously and released from the flange 15b. In this situation, the inner space 14a of the pocket 13 is in communication with the interior of the chamber 1, and it is possible to operate a transfer from one to the other, either to introduce something that was located in the inner space of the pocket 13 into the interior of the chamber 1, or, conversely, to evacuate something that was located inside of the chamber 1 and to bring it into the inner space of the pocket 13.

(68) The mating of the individual unit 12 and the chamber is produced in a sterile manner, in such a way that the transfer of introduction or evacuation in question is itself also sterile.

(69) The individual unit 12 comprises, in addition to the pocket 13, the internal means and elements OI, and, if necessary, when they exist, the internal functional means and elements OFI. It is for this reason that the individual unit 12, like the pocket 13, can be so-called “internal means and elements.” The means and elements OI and OFI are in the sterile state and are placed in the inner space 14a of the pocket 13.

(70) According to one embodiment, such an individual unit 12 can be made in advance, independently of the filling process. Such an individual unit can be stored, transported and used as needed.

(71) According to another embodiment, such an individual unit 12 is produced within the very framework of the filling process. In this case, the filling process comprises a preliminary phase in which, using internal means and elements OI and, if necessary, when internal functional means or elements OFI and a pocket 13 are provided, the individual unit 12 is composed, and for this purpose, these internal means and elements OI, OFI are placed in the inner space 14a, with the door 15 then being in the open state, and then the door 15 is brought into the closed state.

(72) In one and the other of the embodiments, the individual unit 12 is brought into the sterile state, for example by a treatment with y-rays or the like.

(73) If necessary, several such individual units 12 are used for the same filling sequence, for example if the total overall dimensions of the internal means and elements OI, OFI is larger than the inner space of a single pocket 13.

(74) According to another development of the invention that can be combined with the preceding one, it is provided that in the stage prior to the filling stage, a so-called sterile individual unit 17 of external means and elements is available.

(75) Such an individual unit 17 comprises a so-called sterile pocket 18 of external means and elements.

(76) The pocket 18 has a wall 19 that limits a sterile inner space 19a.

(77) This wall 19 is equipped with a door 20 that is mated to an opening 20a of the wall 19. The door 20 is complementary to the door 2a, 2b of the chamber 1.

(78) The door 20 includes a flange 20b for removable rigid mating with the chamber 1. The two flanges 20b and 16b are complementary and can be mated in a rigid and removable manner, thanks to mating means and maneuvering means provided for this purpose, as above. Thus, the individual unit 17 can itself be mated in a rigid and removable manner to the chamber 1, toward the exterior thereof, with the respective doors 20 and 2a, 2b mating.

(79) The door 20 also includes a panel (not shown) that can move between a closed state where it works in a complementary manner with the flange 20b by closing the opening 20a and an open state where it is released from the flange 20b by leaving the opening 20a open.

(80) Means for rigid and removable mating of the panel on the panel of the door 2a, 2b are also provided in such a way that the movement of the former ensures the same concomitant movement of the latter.

(81) Thus, once the individual unit 17 is mated to the chamber 1, with the panels 2a, 2b and 20 being in the closed state and their mated panels, it is possible to maneuver the panel of the door 2a, 2b for opening it and bringing it into the open state, with the panel being opened simultaneously and released from the flange 20b. In this situation, the inner space 19a of the pocket 18 is in communication with the interior of the chamber 1, and it is possible to perform a transfer from one to the next, in a manner that is analogous to that which was seen for the individual unit 12.

(82) The mating of the individual unit 17 and the chamber is produced in a sterile manner, in such a way that the introduction or evacuation transfer in question is itself also sterile.

(83) In addition to the pocket 18, the individual unit 17 comprises the external means and elements OE, including the engaging communication pipe segment 11, and, if necessary, when they exist, the external functional means or elements OFE. It is for this reason that the individual unit 17, just like the pocket 18, can be the so-called “external means and elements.” The means and elements OE and OFE are in the sterile state and are placed in the inner space 19a of the pocket 18.

(84) According to one embodiment, such an individual unit 17 can be produced in advance, independently of the filling process. According to another embodiment, such an individual unit 17 is produced with the very framework of the filling process, in an analogous manner to what was disclosed for the individual unit 12. Also, as for the individual unit 12, the individual unit 17 is brought into the sterile state.

(85) According to the embodiments, a pocket 13, 18 comprises a flexible wall, for example a film made of plastic material, or a rigid wall, or a wall that is partially flexible and partially rigid.

(86) According to a first possible embodiment, the individual unit of the internal means and elements 12 and the individual unit of the external means and elements 17 are two structurally different units.

(87) In such a case, the individual unit of the internal means and elements 12 is mated to the chamber 1, and as disclosed above, a sterile transfer of the internal means and elements OI and OFI is produced between the inner space 14a of the pocket 13 of internal means and elements and the interior of the chamber 1.

(88) In contrast, the individual unit of the external means and elements 17 is mated to the chamber 1, and, after the doors 2a, 2b, 20 are opened, the end part 11a that is downstream from the engaging communication pipe segment 11 is introduced into the interior of the chamber 1, and it is mated in sterile communication with the end part 21 that is upstream from the internal means and elements OI.

(89) According to a first possible embodiment, before mating the door 20 of the individual unit of external means and elements 17 and the corresponding door 2a, 2b of the chamber 1, the door 15 of the individual unit of internal means and elements 12 and the corresponding door 2a, 2b of the chamber 1, which is brought into the closed state, are separated.

(90) With such an embodiment, the door 2a, 2b of the chamber 1 corresponding to the individual unit 12 and the door 2a, 2b of the chamber 1 corresponding to the individual unit 17 can be the same door.

(91) According to a second possible embodiment, when the door 20 of the individual unit 17 and the corresponding door 2a, 2b of the chamber 1 are mated, the door 15 of the individual unit 12 is kept mated to the corresponding door 2a, 2b of the chamber 1.

(92) With such an embodiment, the door 2a, 2b of the chamber corresponding to the individual unit 12 and the door 2a, 2b of the chamber 1 corresponding to the individual unit 17 can be different.

(93) According to a second possible embodiment, the individual unit of the internal means and elements 12 and the individual unit of the external means and elements 17 form one and the same common unit 12/17. In this case, this unit 12/17 comprises a single pocket 13/18, a single wall 14/19, a single inner space 14a/19a, a single door 15/20, a single opening 15a/20a, a single flange 15b/20b, and a single panel.

(94) With such an individual unit 12/17, the procedure is like this. The door 15/20 and the door 2a, 2b of the chamber 1 are mated, and then, after the doors 15/20 and 2a, 2b are opened, a sterile transfer of internal means and elements OI, and, if necessary, OFI, is performed between the inner space 14a/19a of the pocket 13/18 and the interior of the chamber. In one embodiment, the end part 11a that is downstream from the engaging communication pipe segment 11 is introduced into the interior of the chamber, and it is mated in sterile communication with the upstream end part 21 if the latter were not assembled in advance. In another embodiment, these end parts 11a and 21 are preassembled in sterile communication in such a way that it is not necessary to have to assemble them later.

(95) According to another possible embodiment, during the filling stage, the individual unit 12 and/or 17 mated to the chamber 1 and the door(s) 15, 20 are kept in the open state. Thus, the interior of the chamber 1 and the inner space 14a and/or 20a are brought into communication. By so doing, a total space that comprises the inner space 14a and/or 20a of the pocket 14 and/or 20 and the interior of the chamber 1 are produced. This inner space therefore has a larger volume than the inside threshold volume of the chamber 1. Thanks to one or to both individual units 12, 17, it is possible to increase the space of the chamber 1.

(96) The process that was just described makes it possible to implement one or more means or elements of overall dimensions that do not allow its or their passage through a door 2a, 2b of the chamber 1, but that is/are necessary for the filling. Such bulky means or elements are external and placed outside of the chamber 1, if necessary by being housed in a pocket 13, 18.

(97) According to a first possible embodiment, before the introduction of the internal means and elements OI, if necessary OFI, into the chamber 1, the different means and elements OI, OFI, designed to be part of the transfer and filling line 4 inside the chamber 1, are all assembled with one another. Assembled is defined as connected in such a way as to communicate in a sterile manner. These means and elements OI, OFI that are thus assembled are introduced into the interior of the chamber 1.

(98) According to a second possible embodiment, the different means and elements OI, OFI are all disassembled from one another. In this case, these thus disassembled means and elements OI, OFI are introduced into the interior of the chamber 1 and then are assembled with one another once located inside the chamber 1.

(99) According to a third possible embodiment, some of the different means and elements OI, OFI are assembled with one another, and others are disassembled from one another. In this case, the assembled means and elements OI, OFI are introduced into the interior of the chamber 1, thus assembled; the disassembled means and elements OI, OFI are introduced into the interior of chamber 1, thus disassembled, and then are assembled with one another and with the means and elements OI, OFI already assembled once located inside the chamber 1.

(100) According to another aspect and according to different possible embodiments, before the filling stage, the different means and elements OE, OFE that are designed to be part of the transfer and filling line 4 outside of the chamber 1 are either all assembled with one another, or all disassembled from one another, or some are assembled with one another and others are disassembled from one another.

(101) Of course, these different means and elements are to be assembled for the filling stage.

(102) According to the embodiments, the end part 11a that is downstream from the part of the transfer and filling line 4 to the exterior of the chamber, and the end part 21 that is upstream from the part of the transfer and filling line 4 to the interior of the chamber are either assembled with one another or disassembled from one another. Of course, these two end parts are to be assembled for the filling stage.

(103) The sterile filling process and the sterile filling unit are provided in such a way as to be able, on the one hand, prior to the filling stage, to introduce into the interior of the chamber 1, from the exterior thereof, the final containers cf and/or the other empty container ca, and, on the other hand, after the filling stage, to evacuate from the interior of the chamber 1 to the exterior thereof the final containers cf and/or the other filled container ca.

(104) This introduction, this evacuation can be done by means of one or more doors (or airlocks) of the chamber 1. In particular, this introduction, this evacuation can be done by means of one or more doors through which the internal means and elements OI and, if necessary, OFI, are introduced into the chamber or through which the contents from the source container CS up to the final container cf are introduced.

(105) If necessary, advantage can be taken of using an individual unit such as 12 or 17 in the filling process so that this individual unit 12, 17 is also used functionally for the introduction of the final containers cf and/or the other empty container ca. In such a case, such empty containers cf and/or ca are placed in the inner space 14a, 19a of the pocket 13, 18 to be introduced into the interior of the chamber 1 from the individual unit 12 or 17 that is mated to the chamber 1. Such an embodiment generally can be considered only for a small number of containers or containers of small overall dimensions.

(106) The sterile filling process and the sterile filling unit are provided in such a way as to be able, after the filling stage, to evacuate from the interior of the chamber 1 to the exterior thereof the internal means and elements OI and, if necessary, OFI once they have been used for the filling considered, once it is terminated, and require being replaced by others, also disposable for another filling.

(107) This evacuation can be done by means of one or more doors of the chamber 1 and in particular by means of one or more doors through which the internal means and elements OI and, if necessary, OFI, were previously introduced into the chamber or through which the contents from the source container CS up to the final containers cf were introduced.

(108) As above, it is also possible to take advantage of the implementation in the filling process of an individual unit such as 12 or 17 so that this individual unit 12, 17 is also used functionally for the evacuation of internal means and elements OI, and, if necessary, OFI.

(109) If necessary, the same individual unit 12, 17 is implemented for the introduction of the means and elements OI, OFI into the interior of the chamber 1 and the evacuation of these means and elements OI, OFI from the interior of the chamber 1.

(110) Thus, a pocket 13, 18 of an individual unit 12, 17 can be part of or constitute the means for introduction and/or the means for evacuation of the containers cf and ca and are part of or constitute the means for introduction and/or the means for evacuation of the means and elements OI, OFI.

(111) The described process makes possible the greatest flexibility, not only for allowing the filling of one or more other containers ca, but also so as to adapt the number of filling elements 8 to the requirements, either to increase it or to reduce it.

(112) For this purpose, the filling process can comprise several stages for introduction into the interior of the chamber 1 of internal means and elements OI, OFI and/or several stages for evacuation from the interior of the chamber 1 of internal means and elements OI, OFI. These stages are then combined with operations for connecting or disconnecting the means and elements that are introduced or evacuated with the internal means and elements that are kept in the chamber 1. These operations can, as needed, take place before or after one or more filling stages.

(113) The word “sterile” as it is used is to be understood to mean free of microbial germs, viruses or other bodies, objects or products that are undesirably toxic, according to the usages of the field of application in question.

(114) The invention provides disposable means and elements. Such means and elements are, for example, made of plastic.

(115) The expression “chamber” or “sterile chamber” is to be understood as including clean rooms and related controlled environments taking into account the air quality, as it is defined in the Standard ISO 14644 or the Standard USP, Chapter 16.