Abstract:
A device for connecting to a vessel an accessory has an active portion that includes a first, second and third member and a chamber. The first member ensures rigid attachment of the device to the vessel, defines a passageway, acts as a holder for the second member and as a translation guide between a first distal state and a second proximal state, contributes as a guide for the third member and participates in defining the chamber. The second member acts as a holder for the third member rigidly attached thereon, defines a mobile member capable of sliding between the first distal state and the second proximal state. The third member includes a head, and acts as a holder for the accessory rigidly attached thereon, defines a mobile member capable of sliding between the first distal state and the second proximal state, ensures in the first distal state the tight closing of the opening using the head, ensures in the second proximal state a protection of the active proximal portion using the head, and participates in defining the chamber.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates to the connection of an accessory to a receptacle. 
     More especially, its purpose is a device for connection to a receptacle of an accessory whose active proximal part is able to be put into communication with the inside of the receptacle by means of an opening of the receptacle; whereby a first unit comprises a connecting device and an accessory; whereby a second unit comprises the first unit and a receptacle comprises an opening in which the connecting device is mounted; a process for mounting the second unit; and a process for implementing the second unit. 
     In this case, the receptacle in question is a receptacle for storage and/or for treatment of contents such as a biopharmaceutical product. In this case, such a receptacle is understood to be a reusable rigid receptacle or a disposable flexible receptacle such as a pocket. 
     2. Description of the Related Art 
     This pocket can be a so-called 2D pocket, such as the one marketed by Sartorius Stedim Biotech under the trademark Flexboy®, whose volume can typically be between 50 milliliters and 50 liters. 
     The document WO 00/04131 describes such a flexible receptacle whose volume can exceed—and generally does exceed—50 liters. Such a receptacle is commonly called a 3D pocket. It is then known that rigid means for holding the pocket from the outside, at least when it comprises its contents, are associated with this pocket. 
     In this case, a biopharmaceutical product is understood to be one (or several) product(s) that are obtained from biotechnology—culture media, cellular cultures, buffer solutions, artificial nutrition liquids, blood products and derivatives of blood products—or a pharmaceutical product or more generally a product that is designed to be used in the medical field. Such a product is in liquid, pasty, or powdery form in one or more phases that may or may not be homogeneous. The invention also applies to products other than biopharmaceutical products, according to the definition that was just given, but is subject to analogous requirements regarding their storage or their treatment. 
     In this case, the accessory is understood to be a probe for measuring parameters that are relative to the contents of the receptacle, such as pressure, pH, temperature, colorimetry, conductimetry, etc., or else a filling tube or a drainage tube. The invention also applies to other accessories but those whose purpose is to be connected to a receptacle by being put into communication with the inside of the latter. 
     In the field of biopharmacy, it is common to use receptacles as the site for carrying out chemical or biological reactions, and, if necessary, to follow and/or monitor them, or else as a storage means. So as to prevent germs from penetrating inside the receptacle, it is important that the environment be closed, sterile and aseptic, without contact with the outside environment. 
     The reactions in general should take place under determined and monitored conditions (pressure, pH, temperature, colorimetry, conductimetry, etc.) or the storage should be implemented under controlled conditions. It is therefore necessary to carry out measurements or monitoring of parameters that characterize the product that is contained in the receptacle more or less frequently. These measurements should be carried out under aseptic conditions, for the reasons indicated above. 
     The document DE 10 2004 015703 describes a device for connecting an accessory to a receptacle that comprises two elements that are provided with guide means and hooks. This device comprises neither a third element to which the accessory is intended to be attached and that comprises a protective top and a base, nor a chamber. 
     The document DE 42 07 845 describes a support device for an analytical electrode, comprising a stationary outer tube, a moving, sliding inner tube, and a unit that is mounted transversely and that includes a piston that is mounted in a casing, whereby this unit can form an airtight inlet for the inner tube so as to be able to withdraw the electrode from the receptacle in which it is intended to be placed, without losing the contents of the latter. The purpose of this device is not the composition of a functional chamber. 
     The document WO 86/07 151 describes a maintenance device for the calibration and the automatic cleaning of a probe that is part of a continuous measuring system of the chemical or biological process, consisting in analyzing parameters of the fluid that is to be investigated. 
     The document DE 25 57 542 describes a measuring device for electrical values of media that flow, with measuring detectors that are placed in passage chambers, in which the passageway of a valve body forms the passage chamber and the detector is mounted in the latter. 
     The document US2005/0239199 describes a probe according to a particular arrangement. 
     The document US2005/0239198 describes a sterile and aseptic connection by means of two elements, a first element that is attached to the receptacle and a second element that can be connected to the first element. The first element comprises, at its free end, a connecting means that is provided with a cover. The second element comprises a probe that is placed inside a flexible sleeve that is provided with a connecting means that is provided with a cover, whereby the connecting means of the second element is designed to be connected to the connecting means of the first element after their respective covers are removed. The probe is attached to the receptacle by sliding the connecting means of the second element into the connecting means of the first element. The end of the probe is then inserted inside the receptacle by compression of the sleeve, whereby the probe slides inside the first element until it reaches the inside of the receptacle. 
     There is therefore a need for ensuring an airtight connection of an accessory to a receptacle, an easy and quick insertion of the accessory into the receptacle, and, if necessary, a calibration of the accessory when the latter is a probe, and a permanent protection of the accessory. This requirement should be satisfied with a simple device and by means of a process for easy and risk-free implementation. 
     BRIEF SUMMARY OF THE INVENTION 
     For this purpose, according to a first aspect, the purpose of the invention is a device for connection to a receptacle of an accessory whose active proximal part is able to be put into communication with the inside of the receptacle by means of an opening of the receptacle, whereby the device comprises a first element, a second element, a third element, and a chamber, in which:
         The first element has the following functions:
           Ensuring the rigid attachment of the connecting device to the receptacle,   Defining a channel between the inside and the outside of the receptacle,   Serving as a support for the second element and an axial movement guide on an axial course C of which the two ends of travel correspond to a first distal state and a second proximal state,   Helping to serve as a guide for the third element,   Helping to delimit the chamber,   
           The second element has the following functions:
           Serving as a support to the third element, which is attached rigidly to it,   Forming a moving, axially sliding element on the course C whose two ends of travel correspond to the first distal state and the second proximal state,   
           The third element, to which a top belongs, has the following functions:
           Serving as a support to the accessory, which is attached rigidly to it,   Forming a moving, axially sliding element on the course C whose two ends of travel correspond to the first distal state and the second proximal state,   In the first distal state, ensuring, using the top, the airtight closing of the opening,   In the second proximal state, ensuring, using the top, a protection of the active proximal part,   Helping to delimit the chamber,   
           The chamber is closed in an airtight manner in the first distal state and is in communication with the inside in the second proximal state and has the function of housing the active proximal part inside or placing it on the periphery, and if necessary,
           Putting a storage liquid therein,   Putting a liquid for regulating, monitoring and calibrating the accessory therein or constituting a chamber that is closed in an airtight manner in which the accessory is placed on standby for use.   
               

     According to one embodiment, in the first distal state, the second element is laterally opposite the first element, without being opposite a part of the first element that is adjacent to its proximal end, a part of the second element projecting from the distal end of the first element, and, in the second proximal state, the second element is laterally completely opposite the first element toward its distal end, without being opposite an axially shorter part of the first element that is adjacent to its proximal end. 
     According to one embodiment, the third element comprises a base and a body in addition to the top,
         Whereby the top has the following functions:
           In the first distal state, closing the first element in an airtight manner,   In the second proximal state, helping to protect the active proximal part,   
           Whereby the base has the following functions:
           Serving as a support to the accessory, which is attached rigidly to it,   Ensuring the guiding of the sliding, with sealing, of the third element on and relative to the first element,   Helping to delimit the chamber,   
           Whereby the body comprises a connecting part that is provided with a bore in which the accessory is inserted and at least one carrying element, rigidly connecting the top and the base.       

     According to one embodiment, the base comprises:
         In its proximal end part, at least a first ring, capable of being able to slide axially, with sealing, by its outside surface, on and along the inside surface of the tubular wall of the first element,   At its distal end part, a second ring, able to be attached rigidly by its outside surface on and against the inside surface of the tubular wall of the second element,   Whereby inside surfaces of the rings are able to make possible the rigid attachment, with sealing, of the accessory.       

     According to a second aspect, the purpose of the invention is a first unit that comprises a connecting device and a disposable accessory, comprising an active proximal part, attached rigidly to the third element, whereby the active proximal part is housed inside or placed at the periphery of the chamber. 
     According to the embodiments, the distal part of the accessory projects in a distal manner from the distal end of the second element; and/or at least one other functional part, placed beside or close to the accessory, is functionally associated with the accessory; and/or the functional part is at least one tube and more especially at least two tubes, one for intake and the other for drainage. 
     In an embodiment such as the one that corresponds to the case where the accessory is a probe, the functional part preferably comprises at least two tubes, one for intake and calibration, and the other for drainage and rinsing. 
     According to the embodiments, the accessory is at least one probe or at least one tube. 
     According to a third aspect, the purpose of the invention is a second unit that comprises the first unit and a receptacle that comprises an opening in which the connecting device is mounted. 
     According to the embodiments, the receptacle is rigid and reusable or flexible and disposable, such as a so-called 3D pocket. 
     According to a fourth aspect, the purpose of the invention is a process for mounting the second unit, in which:
         A receptacle that is devoid of contents, the accessory, and constituent elements of the connecting device are used,   In a preliminary stage, the first element is attached rigidly to the receptacle at the location of the opening,   In another preliminary stage, the accessory is inserted into the third element, and it is attached rigidly to the latter,   In a second subsequent stage, the unit that consists of the third element+accessory is mounted on and in the second element,   In a third stage, the unit that consists of second element+third element+accessory is mounted on and in the first element until the slot(s) and lug(s) work together corresponding to the first distal state.       

     According to the embodiments, the following are provided: an additional successive stage in which the air (or the gas) that is located in the chamber is drawn in, and it is drained from the latter; an additional successive stage in which a storage liquid is injected into the chamber; an additional successive stage in which sterilization of the unit that consists of receptacle+connecting device+accessory is initiated; and an additional successive stage in which the packaging of the unit that consists of receptacle+connecting device+accessory is initiated. 
     According to a fifth aspect, in a process for implementation of the second unit, operating stages that are linked specifically to the connecting device and to the accessory that comprise the following operating states are implemented:
         With the chamber being empty, pass the unit that consists of the connecting device+accessory from the first distal state to the second proximal state.   Then, implement the accessory.       

     According to one embodiment, the process comprises an additional operation for regulating, monitoring or calibrating the accessory. 
     According to one embodiment, regarding the additional operational stage, a calibration of the accessory is involved, whereby the latter is then a probe with which is associated one (or, as disclosed above, two) tube(s), whereby this calibration is carried out by means of the chamber. 
     According to one embodiment, a single calibration or several calibrations are implemented, such as an initial calibration, a final calibration, and, if necessary, an intermediate calibration. 
     A calibration is implemented whereas the unit that consists of connecting device+probe+tube is in the first distal state and the chamber is closed in an airtight manner. 
     According to one embodiment, the process for implementation comprises a preliminary operating stage that consists in draining the chamber of the storage liquid that was put there during production, and then, if necessary, rinsing it. 
     A calibration is implemented by the following stages:
         First, a calibration solution is injected into the chamber that is closed in an airtight manner,   Then, with the calibration solution filling up the chamber that is still closed in an airtight manner and with the active proximal part being in contact with the calibration solution, the probe is calibrated if necessary and as required,   Then, with the chamber still being closed in an airtight manner, the calibration solution is drained,   Then, the chamber is rinsed, and it is drained.       

     The invention makes it possible in particular to be able to store, to calibrate, and to use a disposable probe under conditions that may or may not be sterile. 
     The invention is most particularly applicable in the biopharmaceutical field, for example for applications linked to mixing, for disposable bioreactors, and for thermoregulation. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Now, several embodiments of the invention will be described using drawings, in which: 
         FIG. 1  is an axial cutaway view of a connecting device, whereby the accessory that is shown diagrammatically is a probe here, the connecting device and the probe are in a first distal state that corresponds to a storage and/or calibration situation, a functional part that is a drainage and calibration tube here is associated with the accessory, and the connecting device is mounted on the receptacle whose peripheral wall is only shown partially; 
         FIG. 2  is a view of the connecting device of  FIG. 1  when the connecting device, the probe, and the drainage and calibration tube are in a second proximal state that corresponds to a situation for using the probe; 
         FIG. 3  is an axial cutaway view of a first element of the connecting device of  FIG. 1 ; 
         FIG. 4  is an end view of the first element of  FIG. 3 , from its distal end; 
         FIG. 5  is an axial cutaway view of a second element of the connecting device of  FIG. 1  that shows the lugs forming part of the end-of-travel locking means; 
         FIG. 6  is an elevation view of the second element of  FIG. 5  that shows an elastic foot; 
         FIG. 7  is an end view of the second element of  FIG. 5  from its distal end; 
         FIG. 8  is an axial cutaway view of a third element of the connecting device of  FIG. 1 , also showing the accessory, namely the probe, and the associated functional part, namely the drainage and calibration tube; 
         FIGS. 9 and 10  are two analogous views respectively to  FIGS. 1 and 2 , whereby the accessory here is a filling and/or drainage tube. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     A device  1  is intended for the connection to a receptacle  2  of an accessory  3  that can be put into communication with the inside  4  of the receptacle  2 . “Connecting” is defined as the fact that originally, the receptacle  2  and the accessory  3  are totally distinct and separate and that using the device  1 , the accessory  3  is attached and connected to the receptacle and that a functional link can be established between the receptacle  2  and its contents, and the accessory  3 . “First unit” refers to the unit that comprises the connecting device  1  and the accessory  3 , and “second unit” refers to the unit that comprises the first unit  1 ,  3  and the receptacle  2 . 
     Conventionally, the unit that comprises the receptacle  2 , the connecting device  1 , and the accessory  3  is referred to by the name of “functional container”  5 . This functional container  5  is intended for storage and/or treatment of a biopharmaceutical product, referred to below as contents. 
     According to the embodiments that are being considered, the receptacle  2  is rigid and can be reused, or it is flexible and disposable, such as a pocket such as a so-called 2D pocket or a so-called 3D pocket, as it was defined above. 
     In one embodiment, such a 3D pocket is generally parallelepipedic in shape, in particular cubic or essentially cubic, having a peripheral wall  6 , forming at least the bottom and the lateral part, and most often the upper part, in such a way that the receptacle  2  is of the closed type, and one or more ports that are suitable for the purpose, arranged on the wall  6 . In one embodiment that corresponds to a high volume that exceeds 50 l and can reach 3,000 l, the receptacle  2  can be folded. 
     With such a flexible receptacle  2 , it is provided that the container  5  also includes rigid means for holding from the outside. These means, whose existence is known in the art, are not shown. It may be in particular a metal tank that may or may not have solid walls. 
     The wall  6  of the receptacle  2  is provided with an opening  7  that is intended for mounting, crosswise relative to the wall  6 , the connecting device  1  and the accessory  3 , so that the latter can be put into communication with the inside  4  of the receptacle  2  and in particular can be brought into contact with the contents of the receptacle  2 , whereas the accessory  3  is located at least substantially in the outside  8  of the receptacle  2 . 
     What was just described in the case of a 3D pocket can be transposed in the case of a 2D pocket and to the case of a rigid receptacle  2 . 
     The device  1 , such as most often the accessory  3 , has a longitudinal axis  1   a  that is placed at least approximately perpendicular to the wall  6 . 
     The inside  4  of the receptacle  2  is conventionally defined as the inside zone in the receptacle  2 , delimited by the jacket of the wall  6 , located on the side where the largest part of the contents is located. The outside  8  of the receptacle  2  is defined as the zone that is located on the other side of the jacket of the wall  6 . 
     The rigid means for holding the receptacle  2  from the outside, when they are provided, comprise a passageway for the connecting device  1 , located opposite or approximately opposite the opening  7 . 
     The term “accessory” does not mean that the object  3  that it refers to would be secondary or simply optional, but that this object  3  is complementary and depends heavily on the receptacle  2  and the contents of the latter by having a function accompanying that of the receptacle  2 . 
     Within the scope of the invention, the accessory  3  is preferably disposable, just like the connecting device  1 . 
     According to a first embodiment ( FIGS. 1 ,  2  and  8 ), the accessory  3  is a probe  3   a  that comprises an active proximal part  9   a  that can measure, detect, monitor, record (subsequently measure) one or more useful parameters that relate to the contents, such as in particular pressure, pH, temperature, colorimetry, and conductimetry. 
     The active part  9   a  of the probe  3   a  is able, when necessary, to be put into communication with the inside  4  of the receptacle  2 , and more especially to be brought into contact with the contents of the receptacle  2  so as to be able to play its measuring role. In this case, it is provided, in an embodiment that is shown in  FIG. 2 , that the active proximal part  9   a  is able to be introduced into the inside  4  of the receptacle  2  by passing through the opening  7  of the wall  6  to go beyond the latter so as to be in close contact with the contents, in a zone where the latter is homogeneous, or at least homogeneous enough regarding the parameter in question, with the remainder of the contents of the receptacle  2 . The opening  7  is then preferably located on or toward the bottom of the receptacle  2 , i.e., so as to be found at a lower level than the level of the contents of the receptacle  2 , even when the content amount is low and the level is close to the bottom of the receptacle  2 . 
     In another embodiment, not shown, the active proximal part  9   a  of the probe  3   a  is not able, strictly speaking, to be introduced into the inside  4  of the receptacle  2  but to be brought below the wall  6  and close to the opening  7  without, however, passing through it, so as to be in communication with the inside  4  of the receptacle  2 . 
     In another embodiment, not shown, the active proximal part  9   a  of the probe  3   a  is able to be brought into the opening  7 , in the plane of the wall  6 , in such a way as to be in communication with the inside  4  of the receptacle  2 . 
     In these various embodiments, situations and positions, the active proximal part  9   a  of the probe  3   a  (and the probe  3   a  itself) is suited to be inserted into the receptacle  2  or into the inside  4  of the receptacle  2 . 
     In other embodiments that can be combined with the preceding ones, not one but several probes  3   a  are provided either for several parameters or at different locations, in particular in terms of height, of the receptacle  2 . 
     According to a second embodiment ( FIGS. 9 and 10 ), the accessory  3  is an intake tube  3   b  and/or a drainage tube  3   b  for the contents of the receptacle  2  or one or more components of the latter. This tube  3   b  comprises an active proximal part  9   b  toward the receptacle  2  that consists of an intake opening if the tube is, or acts like, an intake tube, or consists of a drainage opening if the tube is, or acts like, a drainage tube, whereby this opening is conventionally located at the free end of the tube  3   b.    
     The active proximal part  9   b  of the tube  3   b  is able, when necessary, to be put into communication with the inside  4  of the receptacle  2  so as to be able to play its intake and/or drainage role(s). In line with the active proximal part  9   a  of the probe  3   a , the active proximal part  9   b  of the tube  3   b  is then able either to be taken in either into the opening  7 , in the plane of the wall  6  ( FIG. 10 ), or to be introduced into the inside  4  of the receptacle  2  by passing through the opening  7  of the wall  6  (not shown), or to be taken in below the wall  6  and close to the opening  7  without, however, passing through it (not shown). These various embodiments, situations and positions correspond to what has been defined as the insertion of the active proximal part  9   b  into the receptacle  2  or into the inside  4  of the receptacle  2 . 
     When the accessory  3  is an intake tube  3   b  and/or a drainage tube  3   b , the opening  7  is located relative to the bottom of the receptacle  2  at the height that is appropriate for the purpose of the tube  3   b , either at a level that is close to the bottom of the receptacle  2  or, in contrast, at a level that is more or less removed from the bottom. 
     In line with the probe  3   a , several tubes  3   b  can be provided either for different components or at different locations, in particular in terms of height, of the receptacle  2 . In contrast, the same tube can have several functions: intake, drainage and/or several different components. 
     According to other embodiments, the accessory  3  is intended for a function other than measurement, intake or drainage. Instead of being rigid, this accessory  3  can be more or less deformable. It may optionally involve a functional accessory that is useful for the contents of the receptacle  2 , for example a mixing means. 
     In a general way, the accessory  3  comprises an outside jacket that is more or less complex in shape, elongated, and in particular for a revolution on a circular base. Its proximal end active part is referenced  9 , and its distal end part is referenced  10 . Means such as an electrical conductor, tube, . . . can be associated with this distal end part  10 . 
     In the embodiment that is shown, the accessory  3  is arranged centrally relative to the axis  1   a.    
     According to the embodiments, at least one other functional part  11 , placed beside or close to the accessory  3  and extending along axis  1   a , is functionally associated with the accessory  3  itself by being eccentric relative to it. Such a functional part  11  also comprises an outside jacket, elongated, and in particular for a revolution on a circular base. In the embodiment shown, the functional part  11  takes up a transverse space that is considerably smaller than that of the accessory  3 . 
     Such a functional part  11  is, in one embodiment, one or more intake and/or drainage tubes associated with a probe  3   a  so as to ensure in particular its calibration, as will be described below. In such a case, the tube  11  comprises an open proximal end part  12  and an open distal end part  13  that can come, in one embodiment, in the form of a Luer-type connection end fitting or a filter or the like. 
     In a specific embodiment, such as the one that corresponds to the case where the accessory  3  is a pH probe  3   a , the functional part  11  preferably comprises at least two tubes, one an intake tube, and, if necessary, a calibration tube, and the other a drainage tube, and, if necessary, a rinsing tube. 
     The term “proximal” conventionally refers to what is, in a relative way, close, or closer, to a receptacle  2 , in particular its interior  4 . Conversely, the term “distal” refers to what is, in a relative way, removed, or further removed, from the receptacle  2 , in particular from its interior  4 . These terms are used to reference the constituent parts of the connecting device  1 , the accessory  3 , and the functional part  11 . It is understood, however, that the connecting device  1  or the accessory  3  or the functional part  11  can be considered by itself, independently of the receptacle  2 , before mounting on the latter. These terms are also used to reference the location of the constituent parts of the device  1  of the accessory  3  and of the functional part  11  relative to the receptacle  2  or to reference their position relative to the latter, if this position is not stationary. Finally, these terms are conventionally used to distinguish the two states in which the connecting device  1 , the accessory  3 , and the functional part  11  can be found. 
     The connecting device  1 , the accessory  3 , and in particular its active proximal part that is generally referenced  9 , the functional part  11 , and in particular its distal end part  13 , can be found in one of two possible states described below, corresponding to two possible relative positions relative to the receptacle  2 , to two states, functions or possibilities of action. These states are understood when the connecting device  1 , the accessory  3 , and the functional part  11  are mounted on the receptacle  2 . As above, it is understood, however, that the connecting device  1  or the accessory  3  or the functional part  11  can be considered by itself, independently of the receptacle  2 , before mounting on the latter. 
     The two possible states are a first state termed distal and a second state termed proximal. The terms “first” and “second” express the idea that at the beginning, one is in the distal state. 
     In the first distal state, the active proximal part  9  of the accessory  3 , if necessary the proximal end part  12  of the functional part  11 , is totally separated, in an airtight manner, from the inside  4  of the receptacle  2  by a top  14  that forms a barrier, forming part of the connecting device  1 . 
     In the second proximal state, the active proximal part  9  of the accessory  3 , if necessary the proximal end part  12  of the functional part  11 , is in communication with the inside  4  and inserted into the receptacle  2 . The top  14  then forms a protection of the active proximal part  9 , and, if necessary, the proximal end part  12  of the functional part  11 . 
     In the case where the accessory  3  is a probe  3   a , the first distal state is typically the one that corresponds to storage or to calibration, while the second proximal state is typically the one of the measurement, for the contents of the receptacle  2 , of the parameter that corresponds to the probe  3   a  that is used. 
     In the case where the accessory  3  is a tube  3   b , the first distal state is typically the one that corresponds to the storage or to the disuse of the filling or drainage function of the tube  3   b , while the second proximal state is that of the filling or drainage function of the tube  3   b.    
     The connecting device  1  comprises a first element  15 , a second element  16 , and a third element  17 , separate, assembled together and functionally working with the accessory  3 , and, if necessary, the functional part  11 . The connecting device  1  also comprises a chamber  18 . 
     The first element  15  has several functions:
         It ensures the rigid attachment of the connecting device  1  to the receptacle  2 .   It defines a channel between the inside  4  and the outside  8  of the receptacle  2 .   For the second element  16 , it is used as a support and as an axial translation guide along the axis  1   a , over a given course C whose two ends of travel respectively correspond to the first distal state and the second proximal state.   It helps to serve as a guide for the third element  17 .   It helps to delimit the chamber  18 .       

     The second element  16  also has several functions:
         It serves as a support to the third element  17 , which is attached rigidly to it.   It forms a moving, axially sliding element along the axis  1   a  on the course C whose two ends of travel correspond respectively to the first distal state and the second proximal state.       

     The third element  17 , to which the top  14  belongs, also has several functions:
         It serves as a support to the accessory  3 , and, if necessary, to the functional part  11 , which is (are) attached rigidly to it.   It forms a moving, axially sliding element along the axis  1   a  on the course C whose two ends of travel correspond respectively to the first distal state and the second proximal state.   In the first distal state, it ensures, using the top  14 , the airtight closing of the opening  7  by forming a barrier that prevents access to the inside  4  of the receptacle  2  and the communication between the accessory  3  and, if necessary, the functional part  11 , with the inside  4  of the receptacle  2 .   In the second proximal state, it ensures, using the top  14 , protection of the active proximal part  9  of the accessory  3  and, if necessary, the proximal end part  12  of the functional part  11 , primarily when one and/or the other is introduced, strictly speaking, into the inside  4  of the receptacle  2 .   It also helps to delimit the chamber  18 .       

     The first element  15  is now described more especially with reference to  FIGS. 3 and 4 , and the second element  16  is now described more especially with reference to  FIGS. 5 ,  6  and  7 . 
     The first element  15 , rigid and one-piece, comprises a tubular wall  19 , cylindrical with a circular square base, extending over a certain axial length L 1 . This tubular wall  19  is open at its two ends, respectively proximal  20  and distal  21 , so as to allow the passage, toward the proximal end  20 , of the third element  17 , if necessary the active proximal part  9  of the accessory  3 , and the proximal end part  12  of the functional part  11 , and, toward the distal end  21 , the second element  16 , the accessory  3 , and the functional part  11 , in particular from the side of their distal parts  10 ,  13 . 
     The first element  15  and its tubular wall  19  form a channel  22  for the contents of the receptacle  2  from the inside  4 . 
     At the proximal end  20 , the first element  15  comprises a flange  23  for attachment to the receptacle  2  in the form of a transverse annular collar, directed laterally toward the outside. The outside diameter of the tubular wall  19  corresponds to the diameter of the opening  7  in such a way that the first element  15  can adjust in the opening  7 . The flange  23 , located in the extension of the wall  6  and with an adequate radial expanse, is attached to the latter around the opening  7  in a rigid and airtight manner, for example by ultrasonic welding, gluing or another analogous manner. 
     The first element  15  extends along the axis  1   a , toward the outside  8  of the receptacle  2 . 
     The second element  16 , rigid and one-piece, comprises a tubular wall  24 , cylindrical with a circular base, extending over a certain axial length L 2  that is slightly smaller than the length L 1  in the embodiment that is shown in the figures. 
     This tubular wall  24  is open at its proximal end  25  by thus being able to allow the passage of the third element  17 , the accessory  3 , and, if necessary, the functional part  11 . The tubular wall  24  is open at its distal end  26  by thus being able to allow the passage of the accessory  3  and, if necessary, of the functional part  11 , in particular toward or beside their distal parts  10 ,  13 . According to the embodiments, the distal end  26  is totally open, or it comprises a transverse wall that is provided with an opening  27   a  for the distal part  10  of the accessory  3  and, if necessary, an opening  27   b  for the distal part  13  of the functional part  11 . According to other embodiments, a larger number of openings, adapted to the number of accessories  3  and functional parts  11 , is provided. 
     The outside diameter of the tubular wall  24  of the second element  16  corresponds to the necessary play close to the inside diameter of the tubular wall  19  of the first element  15  in such a way that the first element  15  forms a support and an axial movement guide along the axis  1   a  on the course C for the second element  16 . 
     The inside surface of the tubular wall  19  and the outside surface of the tubular wall  24  comprise a combination of axial groove  28  and radial projection  29  toward the outside. The radial projection  29  can be housed adjusted in, and can slide along, the axial groove  28 , over an axial length that is at least equal to the course C. The combination of axial groove  28  and radial projection  29  forms a guide that defines and maintains the relative angular orientation between the first element  15  and the second element  16 . 
     In the embodiment shown, the groove  28  is arranged in the first element  15  and extends from its distal end  21 . The radial and axial projection  29  is arranged on the second element  16  and extends from its distal end  24 . This structural arrangement makes possible the mounting of the second element  16  on the first element  15  by relative axial sliding of the second element  16  in the first element  15  from its distal end  21  toward its proximal end  20 . 
     The inside surface of the tubular wall  19  and the outside surface of the tubular wall  24  comprise a combination of retractable slot(s)  30  and lug(s)  31 , arranged radially and able to work together. The combination of slot(s)  30  and lug(s)  31  forms removable means  30 ,  31  for locking the end of travel of axial movement along the axis  1   a  of the second element  16  on and relative to the first element  15  on the course C. 
     To make possible the slot  30 /lug  31  cooperation, it is provided that a lug  31  is arranged so as to be stressed elastically radially toward the outside and toward the bottom of an opposing slot  30  so as to be housed there. Conversely, to make possible the slot  30 /lug  31  autonomy, it is provided that a lug  31  is arranged so as to be able to be retracted from a slot with which it was working and thus to withdraw elastically radially toward the inside to be able then to slide on the surface opposite the element that carries the slot(s)  30 , once the lug  31  is located outside and away from a slot  30 . 
     These axial movement end-of-travel locking means with slot(s)  30  and lug(s)  31  can be the object of several embodiments. 
     In the simplest embodiment, two slots  30  and one lug  31 , or, conversely, one slot  30  and two lugs  31  are provided. If the first element  15  accommodates a lug  31 , the second element  16  accommodates a slot  30 . Conversely, if the first element  15  accommodates a slot  30 , the second element  16  accommodates a lug  31 . Slot(s)  30  and lug(s)  31  are positioned angularly so as to be able to cooperate, taking into account the guide  28 ,  29 . Those of the slots  30  or lugs  31  that are two in number are, on the same generatrix, separated along the axis  1   a  by a distance C that corresponds to the translational travel. In this embodiment, each of the two translational ends of travel is defined by the cooperation of a lug  31  in a slot  30 . 
     In another embodiment, it is provided that each slot  30  and each lug  31  is not single, but double, triple, quadruple . . . in the same transverse plane relative to the axis  1   a . In this case, these multiple slots  30  and lugs  31  are preferably also distributed angularly around the axis  1   a . In this embodiment, each of the two ends of travel is defined by the cooperation of several lugs  31  in several slots  30 . 
     In another embodiment, it is provided that a slot  30  and/or a lug  31  is not single but double, triple, quadruple, . . . separated judiciously along the axis  1   a . In this embodiment, each of the two ends of travel is defined by the cooperation of several lugs  31  in several slots  30 . 
     These embodiments can be combined with one another, whereby each slot  30  and each lug  31  is not single, but double, triple, quadruple, . . . in the same transverse plane relative to the axis  1   a  and whereby a slot  30  and/or a lug  31  is not single, but double, triple, quadruple, . . . along the axis  1   a . Such a combination makes it possible to reduce the risk of slot  30 /lug  31  dismantling and therefore the preservation of end-of-travel positions in the absence of ill-timed external stress. 
     Such a combination corresponds to the embodiment that is shown in  FIGS. 3 to 7 . According to this embodiment, the slots  30  are arranged on the first element  15 , and the lugs  31  are arranged on the second element  16 . On the one hand, each slot  30  and each lug  31  is triple with an angular separation of 120°. On the other hand, three such slots  30  that are judiciously separated along the axis  1   a  and two such lugs  31 , also separated along the axis  1   a , are provided. 
     According to this embodiment, more specifically, three proximal slots  30   a , three intermediate slots  30   b , and three distal slots  30   c  are first of all provided on the inside surface of the tubular wall  19  of the first element  15 . The three proximal slots  30   a  are located toward, but separated from, the proximal end  20 . The three distal slots  30   c  are located in the immediate proximity of the distal end  21 . The three intermediate slots  30   b  are also separated axially from the proximal slots  30  and distal slots  30   c . Three proximal lugs  31   a  and three distal lugs  31   b  are then provided on the outside surface of the tubular wall  24  of the second element  16 . The three proximal lugs  31   a  are located in the immediate proximity of the proximal end  22 . The three distal lugs  31   b  are essentially also separated axially from the proximal end  23  and the distal end  24 . 
     In the first distal state, the three proximal lugs  31   a  work with the three intermediate slots  30   b , and the three distal slugs  31   b  work with the three distal slots  30   c.    
     In the second proximal state, the three proximal lugs  31   a  work with the three proximal slots  30   a , and the three distal lugs  31   b  work with the three intermediate slots  30   b.    
     Consequently, in the first distal state, the second element  16  is laterally opposite the first element  15 , without being opposite a part of the first element  15  that is adjacent to its proximal end  20 , a part of the second element  16  projecting from the distal end  21  of the first element  15 . 
     In the second proximal state, the second element  16  is laterally completely opposite the first element  15  toward its distal end  21 , without being opposite a shorter part axially from the first element  15  that is adjacent to its proximal end  20 . 
     Regarding the slot/lug cooperation/autonomy, it is provided, in the embodiment shown, that two lugs  31   a ,  31   b , separated along the axis  1   a , are carried by a foot  32 , in axial direction and elastically deformable in its unit, formed by a part of the tubular wall  24  that is adjacent to one end, distal in the embodiment shown, but elsewhere separated from the rest of the tubular wall  24  by a slit  33  (with or without removal of material). In the embodiment shown, the proximal end of the foot  24  is combined with the proximal end  25  of the second element  16 . As for its distal end, it is located, along the axis  1   a , between the distal lug  31   b  and the distal end  26  of the second element  16 . By this structural arrangement, the same foot  32  can carry the two lugs  31   a ,  31   b , whereby the distal lug  31   b  is sufficiently removed from the connection between the foot  32  and the tubular wall  24  to be able to be retracted as a result of the deformation of the foot. 
     Advantageously, the first and second elements  15  and  16  are made of polyethylene or polypropylene. 
     The third element  17  is now described more especially with reference to  FIG. 8 . 
     The third element  17 , in several pieces, for a revolution around the axis  1   a , comprises the top  14 , a base  34 , and a body  35 , forming a rigid unit. 
     The top  14  has two functions:
         In the first distal state, the top  14  closes the opening  7  and the first element  15  in an airtight manner by forming a barrier that prevents access to the inside  4  of the receptacle  2  and the communication between the accessory  3 , and, if necessary, to the functional part  11 , with the inside  4  of the receptacle  2 .   In the second proximal state, the top  14  helps to protect the active proximal part  9 , and, if necessary, the proximal end part  12 , primarily when one and/or the other is introduced, strictly speaking, into the inside  4  of the receptacle  2  by having passed through the opening  7 . Actually, it is possible, for example, that there are agglomerates in the contents or that an element (tube, shaft, propeller, distributor . . . ) has been introduced into the receptacle  2 , where said element is able in some cases to damage the active proximal part  9 , if necessary the proximal end part  12 , introduced into the inside  4  of the receptacle  2 .       

     The top  14  comes in the general form of a full transverse wall  36  that forms a sort of cover or flap, which is able to work with the opening  7  to close it in an airtight way when necessary and to be separated from it by axial sliding to open it. 
     The peripheral edge of the top  14  forms an offset  37  that can work with and take up, in an airtight manner, the support and holding seat formed by the proximal end  20  and the adjacent part  38  of the flange  23 . 
     The top  14  has an overall elastic deformability that makes it possible, on the one hand, to ensure the airtight cooperation with the support and holding seat, and, on the other hand, to be deformed in the direction of a reduction of its outside diameter, so as to be able to be—for the mounting—inserted into the first element  15  by its distal end  21 . 
     In the first distal state, the top  14  rests on the seat that the first element  15  forms by closing the opening  7  in an airtight manner. It is then located if not in, at least close to, the plane of the opening  7  and the wall  6 . In the second proximal state, the top  14  is introduced into the inside  4  of the receptacle  2  by passing through the opening  7  of the wall  6  to go beyond the latter. 
     The base  34  has several functions:
         It serves as a support to the accessory  3 , and optionally to the functional part  11 , which is (are) attached rigidly to it.   In combination with the first element  15 , it ensures the sliding guide, with sealing, of the third element  17  on and relative to the first element  15 .   It helps to delimit the chamber  18 .       

     The base  34  first comprises, in its proximal end part, a first ring  39 , capable of being able to slide axially, with sealing, by its outside surface, on and along the inside surface of the tubular wall  19  of the first element  15 . For this purpose, the first guide ring  39  has an outside nominal diameter that corresponds to the inside diameter of the tubular wall  19  so that it has sliding contact and sealing between the outside surface of the first ring and the inside surface of the tubular wall  19  of the first element  15 . 
     In the embodiment that is shown, two first rings  39   a  and  39   b  are provided that are separated from one another along the axis  1   a , which makes it possible to combine good guiding by a sufficient scope, good sliding, and good sealing at the same time. 
     Secondly, the base  34  comprises, at its distal end part, a second ring  40 , able to be attached rigidly by its outside surface, on and against the inside surface of the tubular wall  24  of the second element  16 , in or in the vicinity of its median part between its proximal end  25  and its distal end  26 . Thus, the first ring  39  is located outside of the second element  16 , but in the immediate proximity of its proximal end  25 . The second ring  40  is therefore sized and positioned for the purpose of obtaining these results. 
     The inside surfaces  41  and  42 , respectively, of the first ring  39  and the second ring  40  are able to make possible the rigid attachment, with an overall sealing, of the accessory  3  by its outside surface. The axial position of the accessory  3  relative to the base  34  is such that the active proximal part  9  projects proximally from the first ring  39  or is flush with its proximal end. The first case is well suited when the accessory  3  is a probe  3   a  while the second case is well suited when the accessory  3  is an intake or drainage tube  3   b . In all of the cases, the inside surfaces  41  and  42  are sized for the purpose of making this rigid and overall airtight attachment possible. This rigid attachment is implemented by, for example, gluing. 
     If necessary, the first ring  39  and the second ring  40  comprise at least two channels in alignment  43  and  44 , able to make possible the mounting on the inside as well as the rigid attachment, with sealing, of the functional part  11  that is placed beside or close to the accessory  3  by being eccentric relative to the axis  1   a . The axial position of the functional part  11  relative to the base  34  is such that the proximal end part  12  is flush with the proximal end of the first ring  39  or projects proximally from the latter. The first case is well suited when the functional part  11  is an intake or drainage tube, while the second case is well suited when the functional part  11  is, for example, a measuring element. The rigid attachment of the functional part  11  is implemented by, for example, gluing. 
     The body  35  comprises a connecting part  46  that connects the first and the second rings  39  and  40  and that comprises an axial, through bore  45  into which the accessory  3  is inserted. If necessary, the accessory  3  is also attached to the surface of this bore  45 , and therefore to the connecting part  46 . 
     In the embodiment that is shown, this connecting part  46  has an outside diameter that is smaller than the outside diameter of the first and second rings  39  and  40 . This arrangement makes it possible for the functional part  11 , if it exists, to be placed outside of the connecting part  46 . 
     If necessary, the connecting part  46  comprises at least one channel or a slot that is aligned with the channels  43  and  44 . 
     The body  35  also comprises one or more carrying elements  47 , rigidly connecting the top  14  and the base  34 , namely the proximal end of the first ring  39 . The (or these) carrying element(s)  47  is (are) rigid enough to ensure effective holding of the top  14 . In contrast, this (or these) carrying element(s)  47  is (are) arranged to make possible a passage through the contents of the receptacle  2  and/or a fluid that is drawn in or drained through a functional part that is provided for this purpose, for example for the calibration of the probe  3   a.    
     The carrying elements  47  can come in the form of rods that extend axially, arranging passageways  48  between them, or in the form of a sleeve that is provided with such passageways  48 . 
     In the embodiment that is more especially considered, the third element  17 , with the exception of the carrying elements  47 , is carried out in a single piece by casting, in a material that ensures good sealing and that has a certain elastic deformability as already indicated for the top  14 , and a certain sliding quality, such as silicone. Regarding the carrying elements  47 , they are advantageously made of stainless steel or any other material that has the desired rigidity. In other embodiments, the third element is made of several pieces that are assembled in a different way. 
     The third element  17  extends over a certain axial length L 3 , slightly smaller than L 1 . 
     The accessory  3  extends over a certain axial length L 4 , in this case slightly greater than L 1  and L 3 . 
     The axial length of the carrying elements  47  is suitable for making possible the housing of the active proximal part  9 , when it projects from the proximal end of the first ring  39 , and, in the second proximal state, the passageway without hindrance from the contents of the receptacle  2  to the chamber  18  where a probe  3   a  is located, or fluid that comes from or goes toward the tube  3   b.    
     In the first distal state, the third element  17  is completely housed within the first element  15  with the exception of the top  14 . In the second proximal state, the top  14  and the carrying elements  47  of the third element  17  are located outside of the first element  15 , whereby the first ring  39  is located in the opening  7 . In this second proximal state, the first ring  39 , the second ring  40 , and the connecting part  46  are completely housed within the first element  15 , whereby the second ring  40  is located toward the distal end  21  of the first element  15 . 
     The relative position of the third element  17  relative to the second  16  is stationary. The second ring  40  and the connecting part  46  are completely located within the second element  16 . The first ring  39 , the carrying elements  47 , and the top  14  are completely located outside of the second element  16 . 
     In the first distal state, the chamber  18  is closed in an airtight manner, and it is delimited by the first element  15  and the third element  17 , if the active proximal part  9  of the accessory  3 —which, housed inside (the case of the active proximal part  9   a ) or placed on the periphery (the case of the active proximal part  9   b ) of the chamber  18 , helps in a certain manner to delimit it—is set aside. 
     More specifically, in the first place, the chamber  18  is limited at its two axial end parts, on the one hand, by the distal transverse surface of the wall  36  that forms the top  14 , which closes the opening  7 , and, on the other hand, by the transverse surface of the proximal end of the first ring  39 . In the second place, the chamber  18  is limited at its periphery by the inside surface of the tubular wall  19  of the first element  15 . 
     The sealing of the chamber  18 , in the first distal state, is ensured by the sealing that is provided between the top  14  and its seat that belongs to the first element  15 , between the first ring  39  and the inside surface of the tubular wall  19 , between the accessory  3  and the third element  17 , and if necessary between the first ring  39  and the functional part  11 . 
     The chamber  18  is such that the active proximal part  9  is either housed inside (the case of the active proximal part  9   a  of a probe  3   a ), or placed on the periphery (the case of the active proximal part  9   b  of a tube  3   b ), such that the active proximal part  9  is in contact or in communication with the chamber  18  or the fluid that it contains. 
     In the second proximal state, the chamber  18  is open, the top  14  is separated from the opening  17 , and then opened. Furthermore, the above-mentioned sealing is maintained. 
     According to the applications and the requirements, the chamber  18  can be sterile or non-sterile, wet or dry, based on the probe  3   a . For example, a pH probe requires a moist environment. This moist environment is obtained by the presence, in the chamber  18 , of an ad hoc liquid, injected at the time of storage and for this reason referred to as “storage liquid.” 
     In the case where, on the contrary, the probe  3   a  does not require a moist environment but a dry environment, as in the case where the accessory  3  is a tube, such a storage liquid is not provided. 
     The chamber  18  can, after mounting the connecting device  1  that is provided with the accessory  3  and drainage of air (or gas) that is located therein, fill as a function of housing the active proximal part  9  there on the inside or placing it there on the periphery, as it was described. 
     The chamber  18  can also fulfill one or more other functions, in connection with the desired usages. 
     A possible function of the chamber  18  is to put in it a storage liquid, as it was disclosed, such as potassium chloride or a potassium chloride solution. Then, it is possible to initiate sterilization, for example gamma-ray sterilization. 
     Another possible function of the chamber  18 , in the case where the accessory  3  is a probe  3   a , is to initiate a calibration of the latter. For this purpose, a calibration liquid is put into the chamber  18 . 
     Another possible function of the chamber  18 , in the case where the accessory  3  is a tube  3   b , is to constitute a chamber that is closed in an airtight way in which the tube  3   b  is placed on standby for use. 
     The mounting process of the connecting device  1  and the accessory  3 , and, if necessary, the functional part  11 , on a receptacle  2  is implemented as follows on the production site, in particular under “clean room” conditions. 
     A start is made from a situation where a receptacle  2 , devoid of contents, the accessory  3 , if necessary the functional part  11 , and finally constituent elements  15 ,  16  and  17  of the connecting device  1  are used. 
     The description of the mounting and the production is made in the case of a flexible and disposable receptacle  2  such as a so-called 2D pocket or a so-called 3D foldable pocket. 
     On the one hand, in a preliminary stage, the first element  15  is attached rigidly to the receptacle at the location of the opening  17  by thermal welding or in another analogous manner. 
     On the other hand, in another preliminary stage, the accessory  3  is inserted into the third element  17 , it is positioned axially in a suitable way, and it is attached rigidly to the latter at the location of the first and second rings  39  and  40 , if necessary in the bore  45 . If necessary, also, the functional part  11  is inserted, positioned and attached. This insertion is carried out by relative axial sliding, from the distal end of the second ring  40  and toward the top  14 . By this stage, the first step is to constitute the chamber  18 . 
     Then, in a second stage subsequent to this other preliminary stage, the unit that consists of third element  17 +accessory  3  and optionally functional part  11  is mounted on and in the second element  16 . This mounting is implemented by relative axial sliding of said unit  17 ,  3  in the second element  16  from its proximal end  25  and toward its distal end  26 . It is advisable, of course, to do this in such a way that the distal part  10  of the accessory  3  and the means such as the electrical conductor, tube, . . . that are associated therewith, and, if necessary, the distal part  13  of the functional part  11 , pass through the totally open distal end  24  of the second element  16  or the openings  27   a  and  27   b  that are provided for this purpose. 
     Then, in a third stage that is subsequent to this second stage, the unit that consists of second element  16 +third element  17 +accessory  3  and optionally functional part  11  is mounted on and in the first element  15 . This mounting is implemented by relative axial sliding of said unit  16 ,  17 ,  3  into the first element  15  starting from its distal end  21  toward its proximal end  20  into the angular position that is defined by the guide  28 ,  29 . The introduction of the top  14  into the open distal end is made possible using the elastic deformability of the top. The sliding is continued until the slot(s)  30  and lug(s)  31  work together corresponding to the first distal state. The end of travel is then reached barring specific action for the purpose of releasing the slot(s)  30  and lug(s)  31 , whereby their cooperation is ensured because of the elastic foot or feet  32 . By this stage, the composition of the chamber  18  is finished, and then the chamber is closed in an airtight manner. 
     The unit that consists of connecting device  1 +accessory  3 +optionally functional part  11  is then in place, in the first distal state, whereby the receptacle  2  is devoid of contents. The chamber  18  is then devoid of contents other than the ambient atmosphere in which the connecting device  1  was mounted on the receptacle  2 . 
     When this is desired, using a syringe that is connected either to the end fitting of the distal end part  13  of the functional part  11 , in the case where the accessory  3  is a probe  3   a , or on the distal end  10  of the accessory  3 , in the case where the accessory  3  is a tube  3   b , the air (or gas) that is located in the chamber  18  is drawn in, and it is drained from the latter. Next, the syringe is disconnected and removed. 
     Then, it is possible, using a syringe that is connected as above, to inject into the chamber  18  a storage liquid, such as potassium chloride or a potassium chloride solution. Next, the syringe is disconnected and removed. Such an embodiment is imposed when the accessory  3  is a probe  3   a  that should be kept in a moist environment, as is the case of a pH probe. If, on the contrary, the accessory  3  is a probe  3   a  that should be kept in a dry environment, as is the case of a colorimetry probe, the injection of storage liquid is not provided. 
     Then, it is possible to initiate a sterilization of the unit that consists of receptacle  2 +connecting device  1 +accessory  3 +, if necessary, the functional part  11 , for example a gamma ray sterilization. 
     The different stages of the process for mounting the connecting device  1  and the accessory  3 , and, if necessary, the functional part  11 , on a receptacle  2  that were just described are implemented most often one after the other at a site for the production of functional containers  5 . 
     The second unit that consists of folded receptacle  2 +connecting device  1 +accessory  3 +, and, if necessary, the functional part  11  forms a flat unit that can then be packaged, for example, in a first plastic pocket that is itself placed in a packaging box. 
     The second unit that consists of receptacle  2 +connecting device  1 +accessory  3 +, if necessary, the functional part  11  can then be stored and shipped until used, with the latter taking place at a site of use that is generally different from the production site of the functional containers  5  and a certain time after the production has taken place, whereby asepsis is preserved. 
     The process for implementation of the second unit that consists of receptacle  2 +connecting device  1 +accessory  3 +, if necessary, the functional part  11 +the possible rigid means for holding the receptacle  2  from the outside if the latter is flexible, on the site of use, is implemented as follows, once the packaging box and the pocket that have served as packaging are completely unpacked. 
     This process of implementation comprises operating stages that are linked to the receptacle  2 , in itself, independently of the fact that it is connected to the connecting device  1  and to the accessory  3  and, if necessary, to the functional part  11 . These operating stages comprise the following:
         Placing the receptacle  2 , if it is a flexible receptacle  2 , in the rigid means for holding from the outside, provided that it is necessary (the case of a 3D pocket).   Filling the receptacle  2  with the contents.   Implementing any suitable treatment on the contents of the receptacle  2 , such as reaction, mixing, aeration, and addition of other components, . . . .   Optionally shipping or storing the receptacle  2  and its contents in a temporary way.   Draining the receptacle  2  of its contents so as to use the latter.       

     These operating stages are within the grasp of one skilled in the art and do not have to be described. 
     The process for implementation further comprises operating stages that are linked specifically to the connecting device  1 , to the accessory  3 , and, if necessary, to the functional part  11 . 
     These operating stages are as follows:
         In a preliminary stage, draining the chamber  18  of storage liquid provided that such a storage liquid has been put there during production and, in this case, if necessary, rinsing the chamber  18 , or if not, not carrying out this preliminary stage.   First, passing the unit that consists of connecting device  1 +accessory  3 +, if necessary, the functional part  11  from the first distal state, in which it was found at the end of the production, to the second proximal state.   Then, implementing the accessory  3 .       

     In one embodiment, the process also comprises an additional operation for regulating, monitoring or calibrating the accessory  3 . 
     In a particular embodiment that corresponds to the case where the accessory  3  is a probe  3   a  that is to be stored in a moist environment (for example, a pH probe) and that requires such an additional operation for regulating, monitoring, or calibrating the accessory  3 , the sequence is as follows:
         Draining from the chamber  18  the storage liquid that was put there during production, and, if necessary, rinsing the chamber  18 .   Executing an operation for regulating, monitoring or calibrating the probe  3   a.      Placing the receptacle  2 , if it is a flexible receptacle  2 , in rigid means for holding from the outside.   Draining the receptacle  2  with the contents.   Passing the unit that consists of connecting device  1 +probe  3   a +tube  11  from the first distal state in which it was found at the end of the production to the second proximal state.   Implementing any suitable treatment on the contents of the receptacle  2 , such as reaction, mixing, aeration, and addition of other components, . . . .   Using the probe  3   a  by continuing to implement suitable treatment on the contents.   Implementing another operation of regulating, monitoring or calibrating the probe  3   a.      Optionally, shipping or storing the receptacle  2  and its contents temporarily.   Ultimately, draining the receptacle  2  of its contents so as to use the latter.       

     This sequence of stages does not rule out others, however. 
     The operating stages that are linked specifically to the connecting device  1  and to the accessory  3  are now described in the particular embodiment where the accessory  3  is a probe  3   a  that requires an additional operation for regulating, monitoring or calibrating the accessory  3  and where the functional part  11  is an intake and drainage tube. The other embodiments of these stages can be deduced from this particular embodiment. 
     Regarding the stage that consists in draining from the chamber  18  the storage liquid that was put there during the production, the procedure is as follows. 
     Using a syringe that is connected to the end fitting of the distal end part  13  of the tube  11 , the storage liquid that is found in the chamber  18  is drawn in and then drained from the latter. Next, the syringe is disconnected and removed. 
     Regarding the stage that consists in passing the unit that consists of connecting device  1 +probe  3   a +tube  11  from the first distal state, in which it was found at the end of the production, to the second proximal state, the procedure is as follows. 
     The unit that consists of second element  16 +third element  17 +accessory  3 +tube  11  is slid axially over the course C in the proximal direction, i.e., toward the receptacle  2 , until the slot(s)  30  and lug(s)  31  work together corresponding to the second proximal state. The end of travel is then reached. 
     The switching of the cooperation of the slot(s)  30  and lug(s)  31  corresponding to the first distal state to their cooperation corresponding to the second proximal state is made possible because of the flexibility of the foot or feet  32 . 
     To make possible the withdrawal movement for disengagement of a lug  31  from a slot, a tool (not shown) that can move the lug  31  against the foot  32  is used. 
     When, by the single movement that was just described, the operation moves from the first distal state to the second proximal state, the channel  22  that was until then closed in an airtight manner by the top  14  is opened, and the proximal active part  9   a  of the probe  3   a  is put into communication with the inside  4 , whereby this proximal active part  9   a  is thus inserted into the receptacle  2 , as was indicated above. The chamber  18  that was heretofore closed is opened, and if the receptacle  2  contains contents exceeding the level of the opening  7 , these contents can fill the chamber  18 . The proximal active part  9   a  is also in contact or in communication with these contents. 
     In the second proximal state, the top  14  fulfills its protective function, while the first ring  39  ensures the sealing of the receptacle  2 . 
     The connecting device  1  is reversible in that it is possible to make it go back from the second proximal state to the first distal state by a movement that is opposite to the one described above for passing from the first distal state to the second proximal state. 
     This operation makes it possible to measure the contents of the receptacle  2  in the chamber  18 , which was closed. 
     Regarding the stage itself for implementing the probe  3   a , i.e., for measuring by the latter the parameter to which it is adapted, it is within the grasp of one skilled in the art and does not have to be described. 
     Regarding the stage that consists in the additional operation for regulating, monitoring or calibrating the probe  3   a , the procedure is as follows. 
     This stage, now conventionally referred to as “calibration,” can be implemented a single time or, on the contrary, several times, and it can be implemented at different times and for several purposes. 
     In one embodiment, there are two calibrations:
         An initial calibration, before the receptacle  2  is filled with its contents. The purpose of this calibration is to ensure that the probe  3   a  is correctly regulated and, failing this, to regulate it in a suitable manner.   A final calibration, after the receptacle  2  has been drained of its contents. This calibration is done for purposes of checking that the probe  3   a  has not become out of adjustment during the process.       

     If necessary, it is possible to consider one (and even several) intermediate calibration(s) after the receptacle  2  has been filled (totally or partially) with its contents and before it has been drained of its contents. The purpose of such a calibration is to ensure, during the process, that the probe  3   a  is correctly regulated and, lacking this, regulating it in a suitable manner. 
     The calibration is implemented by means of the chamber  18 , of which it is one of the functions. 
     In all of the cases, the calibration is implemented whereas the unit that consists of connecting device  1 +probe  3   a +tube  11  is in the first distal state and whereas the chamber  18  is closed in an airtight manner. Either the unit that consists of connecting device  1 +probe  3   a +tube  11  is in the first distal state for the reason that it was there previously, for example at the end of production, or this unit is brought into the first distal state from the second proximal state in which it was found previously. This is possible because the connecting device  1  is reversible. 
     The presence of the chamber  18  allows an on-line calibration in that it can be implemented, whereas the device  1 , the probe  3   a  and the tube  11  have already been connected to the receptacle  2 . 
     Having been, as indicated, in the first distal state, first a pH solution is injected for calibration into the chamber  18  that is closed in an airtight manner, using a syringe without a needle, via the tube  11  by means of the connection end fitting of the distal part  13 . Once the injection is terminated, the syringe is withdrawn from the connection end fitting. 
     Then, with the pH solution for calibration thus filling the chamber  18  that is still closed in an airtight manner, and with the active proximal part  9   a  being in contact with the pH solution for calibration, the probe  3   a  is calibrated if necessary and as required. 
     Then, with the chamber  18  still closed in an airtight manner, the pH solution for calibration is drained using a syringe without a needle via a drainage tube  11  by means of the connection end fitting at the distal part  13 . Once the drainage has ended, the syringe is removed from the connection end fitting. 
     The rinsing syringe that contains a rinsing product such as sterile water is then connected to the tube  11  by means of the connection end fitting. The rinsing product is injected into the chamber  18 , and then it is drained off. 
     The calibration operation having been thus carried out, it is possible to open the chamber  18  by passing from the first distal state into the second proximal state. The probe  3   a  can then measure the parameter for which it is intended in the receptacle  2 , and more especially its contents.