EP3975973A1 - Transfer cannula - Google Patents

Abstract

The invention relates to a transfer cannula (1) for sterile transfer of fluids to powders or fluids to fluids from a first receptacle (2) into a second receptacle (3), having two tube sections (4, 5) running in the same direction which have different lengths in the longitudinal direction (L) of the tube sections (4, 5), the longer tube section (4, 5) terminating in an insertion tip (6). Furthermore, the tube sections (4, 5) are designed to be rigidly connected to a coupling wall (8) surrounding the tube sections (4, 5) in a cylindrical manner, the coupling wall (8) having, associated with each insertion tip (6) and being arranged in opposition on both sides with respect to the longitudinal direction (L) of the tube sections (4, 5), a cutout (15) which extends as far as an end edge (16) of the coupling wall (8) and in which, when viewed from the side, an insertion tip (6) of each tube section (4, 5) is exposed. In order to make further developments to a transfer cannula of the type in question in particular in a favourable manner in terms of handling, according to the invention the coupling wall (8) projects beyond the insertion tip (6) in the direction of the longitudinal extent (L) of the tube sections (4, 5), and the cut-out (15) widens in a corresponding V-shape at the end edge (16).

Description

description

Transfer cannula field of technology

[0001] The invention relates to a transfer cannula for the sterile transfer of fluids to powders or fluids to fluids from a first container into a second container, with two duct sections running in the same direction, which are of different lengths in the longitudinal direction of the duct sections, where the longer duct section runs out in a plug-in tip, wherein the lead sections are firmly connected to a coupling wall surrounding the lead sections in the shape of a cylinder, the coupling wall assigned to each tip and with respect to the catching direction of the lead sections on both sides having a recess reaching up to an end edge of the coupling wall, in which a tip of the Feitungsabschnit te exposed in a side view.

[0002] The invention also relates to a transfer cannula for the sterile transfer of fluids to powders or fluids to fluids from a first container into a second container, with two duct sections running in the same direction, which are of different lengths in the catching direction of the duct sections the longer lead section terminates in an insertion tip, the lead sections being surrounded by a coupling wall that runs radially outward to a mounting wall, the coupling wall being supported on the mounting wall so as to be displaceable in the catching direction of the lead sections. State of the art

[0003] Transfer cannulas are also known in practice as so-called transfer cannulas. By means of these it is possible to create a sterile transfer of, for example, fluids to powders or fluids to fluids from a first container into a second container. The line sections pass through a closure element, for example made of a rubber material, of the respective container at each end. When the transfer cannula is attached, the closure element is pierced by the piercing tip formed at each end of the line sections.

The line sections have different lengths in their longitudinal extension, in particular starting from a transverse plane viewed transversely to the longitudinal extension, in which both line sections are in a corresponding sectional view in a full cross-section, i.e. closed in the circumferential direction. Starting from this, the line section having the piercing tip generally extends over a longer extent than the other line section.

The longer line section having the piercing tip at one end can then be the shorter line section when viewed in the opposite direction starting from the transverse plane mentioned.

[0006] As a result of this configuration and arrangement of two line sections, a favorable ventilation or venting of the containers can result in the course of the transfer.

A support on or on the containers can be achieved in each case via the coupling wall. The coupling wall can thereby Contain the container wall at least partially, with respect to an extension in the direction of the longitudinal extension of the line sections.

Due to the recesses provided in the coupling wall, the container encompassed by the coupling wall can be grasped in particular for removal of the same.

Such a transfer cannula is known, for example, from US Pat. No. 6,948,522 B2.

[0010] A transfer cannula, in which the coupling wall is held displaceably on a mounting wall in the longitudinal direction of the line sections, is also known from US Pat. No. 5,879,345, for example.

Summary of the invention

With regard to the prior art described above, one object of the invention is to develop a transfer cannula of the type in question, in particular in a manner that is advantageous in terms of handling. A possible solution to the problem is given according to a first inventive idea in a transfer cannula, which is based on the fact that the coupling wall in the direction of the longitudinal extension of the line sections protrudes beyond the tip and that the recess associated with the terminal edge widens V-shaped . [0013] A possible solution can also be given in that, based on a longitudinal extension of the line sections, starting from a central area, two mounting walls extending in opposite directions are provided. can be seen on each of which a coupling wall is slidably supported tert.

The coupling wall can be seen with such an axial length that the formation of the free end edge of the coupling wall with a distance to the associated piercing tip in the longitudinal direction of the line sections be sought

Line section provides. As a result of this protrusion of the coupling wall beyond the piercing tip, which is produced in the longitudinal direction, favorable guidance of the transfer cannula as a whole, in particular in the course of the piercing process, can be achieved. The coupling wall can thus initially lead, for example, against the wall of the container to be coupled, which at the same time provides an exact alignment, for example centering, of the piercing through the closure element of this container

Line sections can be reached, further in particular before such penetration, but also in the course of penetration.

In addition, the line sections, in particular their free ends, such as the piercing tip in particular, can also be protected in a non-use or in a preparation position, surrounded by the coupling wall. The line sections, in particular their free ends with the piercing tip, are thus protected from significant soiling or contamination before the transfer cannula is used.

A V-shaped widening of the recess in the direction of the end edge can in particular offer advantages in terms of handling, further particularly when a receptacle connected to the transfer cannula is removed. In this case, the recess can extend in the direction of the coupling wall in relation to an extent in the circumferential direction on the closing edge by, for example, about 1.2 to 2.5 times, further increase by about 1.5 to 2 times. Furthermore, the V-shaped widening can begin approximately in the middle of the longitudinal extent of the recess viewed in the direction of the longitudinal extent of the line sections, moreover approximately in the region of a middle third of the longitudinal extent. The section of the recess extending in front of it can have an essentially constant extent of extension in the circumferential direction, viewed in the longitudinal extension.

[0017] The possible arrangement of two oppositely extending mounting walls with coupling walls mounted displaceably thereon provides a transfer cannula that is particularly advantageous in terms of handling compared to the known solutions. This can result in a reciprocal, independent arrangement of the receptacles. Both ends of the transfer cannula viewed in the direction of longitudinal extent of the line sections can thus be suitable for receiving the first or the second container. The respective application for coupling or also for decoupling the respective container can be formed here by the same on both sides.

The features of the above-described independent claims are both essential in themselves and in any combination with one another of importance, further features of an independent claim can be combined with the features of a further independent claim or with features of several independent claims, furthermore with only individual features of one or more of the further independent claims. Thus, according to a possible embodiment, starting from a central area, two oppositely extending holding walls can be provided, on each of which a coupling wall can be movably supported, one or both coupling walls having the respective plug-in tip in the direction of the longitudinal extension of the line sections can protrude and wherein a recess can also be provided in one or both coupling walls, which can expand in a V-shape associated with the end edge.

Further features of the invention are explained below, also in the description of the figures, often in their preferred assignment to the subject matter of claim 1 and / or the further independent claim or to features of further claims. However, they can also be assigned to only individual features of claim 1 and / or the further independent claim or the respective further claim or each be independent of importance.

According to a further possible embodiment, the transfer cannula can be designed essentially mirror-symmetrically with respect to a central plane running transversely to the longitudinal extension of the line sections. This also leads to a design that is advantageous in terms of handling. Both end regions of the transfer cannula can be used both for attaching the first and optionally the second container. There is not necessarily a fixed assignment of the first and the second container to a possibly predetermined side of the transfer cannula.

[0022] Starting at the facing piercing tip up to the end edge of the coupling wall, the recess can have an extension. have, which can correspond to a third or more of a length of a line section that is completely closed in the circumferential direction. Thus, this oversize of the recess, viewed in the longitudinal extent of the line sections, beyond the piercing tip can be approximately 0.3 to 0.7 times, further approximately 0.4 to 0.6 times the extent of extent in the longitudinal direction Corresponding to this extent in the circumferential direction completely closed line section.

In a further embodiment, the line sections can be surrounded by a first cylinder area forming a mounting wall for a closure area of a container, the recesses also being formed in a second cylinder area which is provided coaxially to the first cylinder area and forms the coupling wall can, which can run at a radial distance from the first cylinder area.

The two cylinder areas for forming the support wall and the coupling wall can be aligned coaxially with one another.

[0025] The two cylinder areas, together with the line sections, can also be designed in one piece and made of the same material, for example manufactured using the plastic injection molding process. The holding wall formed by the first cylinder area can, as also preferably, serve to hold the transfer cannula as a whole on a closing area having the closing means of the container. The line sections can be provided essentially centrally, oriented along a longitudinal center axis of the mounting wall. The central plane running transversely to the longitudinal extension of the line sections can be constructed constructively by a transverse wall correspondingly transverse to the longitudinal extension, from which the line sections and the retaining and / or coupling walls proceed on both sides, viewed in the longitudinal direction, the line sections overall enforce such a transverse wall.

A preferably transverse to the longitudinal direction of the line sections, spaced in the longitudinal direction to the center plane, the terminating edge of the first cylinder region or the mounting wall can, as also preferably, be protruded by the piercing tip of the one line section. In this regard, the piercing tip can protrude beyond the end edge of the mounting wall, which can correspond to half or less of the length of the line section that is completely closed in the circumferential direction.

In addition, an associated recess of the coupling wall with reference to a side view towards the transfer cannula can end overall at a distance from the end edge of the mounting wall viewed in the longitudinal extension of the line sections.

In one possible embodiment, the first cylinder area forming the mounting wall can be designed to be circumferentially closed. In an alternative embodiment, however, this cylinder area can also be partially open in the circumferential direction, possibly even open up to the terminating edge.

At the second cylinder area forming the coupling wall, the outer wall side can extend in the direction of the line sections extending ribs may be formed. These can serve as roll protection to ensure that the transfer cannula does not roll off the table or the like during or after use. In addition, the ribs can serve to improve the handling of the transfer cannula, in particular when the containers are coupled and / or when the container is removed, for example after a transfer has been carried out.

In the case of a displaceable mounting of the coupling wall on the mounting wall, it can also be provided that a non-rotatable guide is provided in this regard. In this case, the coupling wall can be slidably displaced relative to the retaining wall in the longitudinal direction of the pipe sections, optionally, and preferably, in the direction of the displacement. In the circumferential direction, on the other hand, in such a configuration, the coupling wall can not be movably tied to the retaining wall, so that a predetermined direction can be given in the circumferential direction in every shift position of the coupling wall.

For this purpose, the mounting wall can have, for example, at least one catching slot in which, for example, a rib of the coupling wall pointing radially inward can also engage.

[0034] The interaction between the ribs and the catching slot can, as is also preferred, provide guidance for the coupling wall in the course of the sliding displacement.

In addition, a plurality of catch slots can be provided over the circumference of the mounting wall, which are arranged distributed uniformly to one another in the circumferential direction, optionally within a group can. Thus, according to a further possible embodiment, two groups of two, three or more longitudinal slots diametrically opposite in cross section can be provided, the longitudinal slots of a group being able to be uniformly spaced from one another in the circumferential direction. Along the edge of a longitudinal slot of the mounting wall extending in the longitudinal direction of the line sections, radially outwardly protruding ribs can be formed on which the coupling wall can be supported on the inside of the wall. By arranging several such ribs over the circumference of the mounting wall, a uniform radial spacing of the coupling wall from the mounting wall can be achieved.

With regard to a longitudinal extension of the line sections, a radially extending projection can be formed in the middle area on the mounting wall, against which a displaceable coupling wall can come into contact in the retracted state. One across the

Longitudinal extension of the line sections extending central plane of this radially extending projection can form a central or symmetry plane in one possible embodiment, from which a holding and / or coupling wall can extend on both sides. The radially extending projection can also have a radial dimension, starting from a longitudinal center axis of the transfer cannula, that can exceed the largest radial dimension of the coupling wall in this regard.

Furthermore, this rib and / or each coupling wall, viewed over the circumference, can be designed non-round, so further, for example, diametr having flat sections formed opposite one another. The transfer cannula designed in this way is thus provided with a roll prevention mechanism.

The ranges or value ranges or multiple ranges specified above and below also include, with regard to the disclosure, all intermediate values, in particular in 1/10 steps of the respective dimension, possibly also dimensionless. For example, the specification 0.3 to 0.7 times also includes the disclosure of 0.31 to 0.7 times, 0.3 to 0.69 times, 0.31 to 0.69 times etc., the indication 1.2 to 2.5 times also the disclosure of 1.3 to 2.5 times, 1.2 to 2.4 times, 1.3 to 2.4 times Subject etc. This disclosure can serve on the one hand to delimit a specified range limit from below and / or above, but alternatively or additionally to disclose one or more singular values from a respective specified range.

Brief description of the drawings

[0041] The invention is explained below with reference to the attached drawing, which, however, merely represents exemplary embodiments. A part that is only explained with reference to one of the exemplary embodiments and is not replaced by another part in a further exemplary embodiment due to the special features highlighted there, is thus also described as a possible existing part for this further exemplary embodiment. The drawing shows:

1 shows a transfer cannula in a first embodiment in

Side view;

2 shows the plan view of the transfer cannula; 3 shows the transfer cannula in a perspective illustration;

4 shows the longitudinal section along the line IV-IV in FIG. 1;

5 shows a further longitudinal section through the transfer cannula with a section plane deviating from the section in FIG. 4;

Fig. 6 is a perspective exploded view of the Überleitungska tube in a second embodiment;

7 shows the side view of this;

8 shows a perspective representation of the transfer cannula of the second embodiment in an exploded basic position;

9 shows the side view of this;

10 shows the plan view of the transfer cannula;

11 shows a longitudinal section through the transfer cannula according to FIG

Line XI-XI in Figure 9;

FIG. 12 shows a further longitudinal sectional illustration through the transfer cannula with a sectional plane changed compared to FIG. 11; 13 shows a perspective representation corresponding to FIG. 8, but relating to a pushed together position of use of the transfer cannula;

14 shows the side view of this; FIG. 15 shows a longitudinal sectional illustration corresponding to FIG. 11, but relating to the position of use according to FIG. 13;

FIG. 16 shows a longitudinal sectional view corresponding to FIG. 12, but relating to the position of use according to FIG. 13;

17 shows the section along the line XVII-XVII in FIG. 16.

DESCRIPTION OF THE EMBODIMENTS A transfer cannula 1 for the sterile transfer of, for example, fluids to powders or fluids is shown and described using a first embodiment shown in FIGS. 1 to 5 and using a second embodiment, shown in FIGS. 6 to 17 for fluids from a first container 2 into a second container 3. The transfer cannula 1 has two line sections 4, 5 running in the same direction, each line section 4, 5 forming an insertion tip 6 on one end.

In the longitudinal direction L of the line sections 4 and 5 extends a longitudinal center axis x of the transfer cannula 1. Essentially concentric to this longitudinal center axis x, the line sections 4 and 5 are initially surrounded by a first cylinder area Zi with a radial distance Cylinder area Zi forms a mounting wall 7 for a closure area 9 of the container 2 or 3. A second cylinder area Z2, which forms a coupling wall 8, is provided further coaxially to the longitudinal center axis x at a radial distance from the first cylinder area Zi. With this coupling wall 8, the respective container wall 10 can be encompassed or supported in the corresponding assignment position, in particular during the transfer of, for example, a fluid from the first container 2 to the second container 3 or vice versa.

The two line sections 4 and 5 preferably extend essentially like a tube in a side-by-side arrangement, so that the longitudinal center axis x can result between the line sections 4 and 5 in the area of the line walls that are in contact with each other (compare in particular FIGS. 2 and 5 as well as 10 and 11).

Starting from a transverse plane E oriented transversely to the central longitudinal axis x, which can also represent a central plane or plane of symmetry at the same time, the line sections 4 and 5 extend in the longitudinal direction L with different lengths a and b. Thus, as also shown, the endseihg the insertion tip 6 having in this direction of extension Lei line section extend over a length a which is about 1.5 to 2.5 times, further about 2 times the length b of the other Line section corresponds. This other line section with the shorter length b ends in this longitudinal direction compared to the insertion tip 6 rather blunt arhg, accordingly has at least approximately one circumferential wall in a cross section transverse to the longitudinal center axis x in the opening plane. The insertion tip 6, on the other hand, has an opening surface 29 enclosing itself at an acute angle α of approximately 10 to 20 degrees, further approximately 15 degrees to a parallel to the longitudinal center axis x.

In a mirror-symmetrical arrangement to the transverse plane E, the line section provided with an insertion tip 6 at one end opens into a stump-like opening at the other end, while the line section provided with the stub-like opening is longer than the transverse plane E and forms an insertion tip 6 at the other end.

A transverse wall 11 can be provided along the transverse plane E or correspondingly along a plane of symmetry. This carries the cannula unit resulting from the line sections 4 and 5 or is penetrated by these essentially in the middle.

The retaining wall 7 can also be connected via this transverse wall 11. The mounting wall 7 can extend from the transverse wall 11 or the transverse plane E on both sides in the axial direction, it being possible for additional connection and stabilization via radial ribs 12 to be provided. These radial ribs 12 can preferably be arranged uniformly distributed over the circumference with respect to the longitudinal center axis x. Thus, according to the first exemplary embodiment shown in FIGS. 1 to 5, four such radial ribs 12 can be provided or, alternatively, according to the second exemplary embodiment, six thereof (see FIG. 10).

The radial ribs 12 can preferably be connected both to the transverse wall 11 and to the inner wall surface of the mounting wall 7. Also with regard to the arrangement and design of the radial ribs 12, a symmetrical arrangement with respect to the transverse plane E can be given.

According to the first embodiment shown in Figures 1 to 5, the mounting wall 7 can be designed to be closed all round, further in particular in the form of a circular cylinder.

On this first cylinder area Zi or on this retaining wall 7, the coupling wall 8 can be connected at a radial distance to the outside, this with the arrangement of spacing radial ribs 13 between the mounting wall 7 and coupling wall 8. These further radial ribs 13 can be in radial extension be provided to the vorbe written radial ribs 12 between the Feitungsabschnitte 4, 5 and the mounting wall 7.

The coupling wall 8 can, as is also preferred, have an essentially circular cylindrical shape with ribs 14, each in the catch direction F, which are arranged in the catch direction F and which extend in the catch direction F and serve as anti-roll protection before, during or after the use of the Transfer cannula 1 are intended to serve. In addition, these ribs 14 improve the handling of the transfer cannula 1 designed in this way.

Furthermore, as is also preferred, the coupling wall 8 can be provided on both sides of the transverse plane E with recesses 15 extending essentially in the longitudinal direction F. These can also initially have a slot-like shape, each opening towards the free terminating edge 16. With reference to a top view according to FIG. 2, a diametrically opposite arrangement of two recesses 15 results on both sides of the transverse plane E. As can also be seen in particular from the illustration in FIG. 1, a V-shaped widening in the direction of the terminating edge 16 can result over the length c viewed in the longitudinal direction L of each recess 15 from approximately half of the extension length. The end region of the recess 15 facing the transverse plane E can have a width d, viewed with reference to a side view according to FIG. 1, which can correspond to about 3 to 5 times a free inner diameter of a line section 4, 5, in addition, for example about 4 times.

The width e, viewed in the same side view according to FIG. 1, of the recess 15 in the outlet in the region of the terminating edge 16 can be approximately 1.5 to 2.5 times, further approximately 2 times the width d. With reference to a side view towards the transfer cannula 1, for example according to FIG. 1, starting from the end facing the transverse plane E, the recess 15 can initially extend with a constant width d and thereafter in a uniformly up to the end edge 16, approximately V - Pass over the widening section.

The above-described length c of the recess 15, starting from the end edge 16, can further be dimensioned so that, as can also be seen, for example, from FIG. 4, the insertion tip 6 of a line section 4 or 5 with reference to a side view according to FIG 1 in the recess 15 can be exposed.

Correspondingly, the insertion tip 6, as also preferred, protrude beyond the relevant end edge 17 of the mounting wall 7, while according to a preferred embodiment, the stump 18 of the other (shorter) line section 5 or 4 at an axial distance from this end edge 17 of the mounting wall 7 ends and accordingly can extend within the given by the mounting wall 7 pot-like opening Publ.

As can also be seen in particular from the sectional illustration in FIG. 5, a length f, starting from the end edge 16 of the coupling wall 8 up to a plane oriented transversely to the longitudinal center axis x and touching the insertion point 6, can be approximately 0.8 - Up to 1.2 times a length g of a line section 4, 5 which is circumferentially closed over the length g in a cross section transverse to the longitudinal center axis x.

The line sections 4, 5, the mounting wall 7 and the

Coupling wall 8 can, according to the first exemplary embodiment, together with the ribs described further, preferably be designed in one piece and materially, for example as a result of production using the plastic injection molding process.

In the second exemplary embodiment shown in FIGS. 6 to 17, on the other hand, there is only a one-piece and materially uniform design of the line sections 4, 5 and here, too, via radial ribs 12 on bound mounting walls 7, 7 '.

Essentially symmetrically to the transverse plane E, two mounting walls 7, 7 'extend in this embodiment, each of which is assigned a coupling wall 8 or 8'.

The coupling walls 8, 8 'are slidably but non-rotatably guided in the longitudinal direction L relative to the respective mounting wall 7, 7'. For this purpose, the mounting walls 7, 7 can have longitudinal slots 19 running in the longitudinal direction L, which, according to the illustrated embodiment, can completely penetrate the mounting walls 7 and 7 'in the radial direction. The longitudinal slots 19 extend in the longitudinal direction L starting in each case from the transverse wall 11 with an open edge into the end edge 17 of the holding wall 7, 7 '.

As can also be seen in particular from the sectional illustration in FIG. 17, essentially two groups of longitudinal slots 19 can be provided, which groups can lie diametrically opposite each other with reference to the longitudinal center axis se x. So three such longitudinal slots 19 can be provided per group, which are preferably evenly spaced from one another in the circumferential direction. The circumferential distance between two longitudinal slots 19 different groups following one another in the circumferential direction can be selected to be greater than the circumferential distance between two longitudinal slots 19 of the same group.

Radially inwardly facing ribs 20 of the coupling wall 8 or 8 'engage in the longitudinal slots 19 (see FIG. 17).

This rib / slot arrangement enables the coupling walls 8 and 8 'to be displaced in a rotationally fixed manner relative to the mounting wall 7, 7' or the line sections 4, 5.

Furthermore, spacing ribs 21 can be formed on the outside of the mounting wall 7, 7 ', flanking a longitudinal slot 19, which ensure the uniform radial distance between the coupling wall 8, 8 'and the mounting wall 7, 7'.

The sliding displacement of the coupling wall 8, 8 'relative to the mounting wall 7, 7 ‘is preferably limited in both directions of displacement.

Each coupling wall 8, 8 ′ can form two spring sections 27 diametrically opposite in the circumferential direction. The rib 20 assigned to each Federab 27 on the inside serves as a spreader 28, via which, when a container 2, 3 is attached, the respective spring portion 27 can experience an elastically resilient displacement radially outward. The spring sections 27 can thus have a clamping effect on the container 2, 3, for example on its container wall 10, via the spreader 28.

Pointing towards one another in one direction (retracted state), the coupling walls 8, 8 'are abutted by a radially outwardly lengthened design of the transverse wall 11. The essentially circumferential projection 22 formed by this can, as also shown , protrude in the radial direction over the coupling wall 8, 8 '(see also, for example, FIG. 15).

A safeguard against unrolling of the transfer cannula 1, for example when it is placed on a table surface or the like, can be provided by the arrangement of diametrically opposite straight sections 23 which interrupt the otherwise circular outline of the projection 22. In a pull-out direction of the coupling walls 8 and 8 'there is a limit stop due to stops on the inside of the coupling wall 8, 8' provided stop ribs 24 on the outside wall of the mounting wall 7, 7 formed counter stop ribs 25 (see Figure 12).

With reference to a top view according to FIG. 10, collar sections 26 protruding radially in front of the straight sections 23 of the projection 22 can be formed on the outside of the wall of the coupling walls 8, 8 'in the area of their end edges 16. These collar sections 26 can serve as a retraction aid.

Before it is used for the first time, regardless of its configuration, the transfer cannula 1 can preferably initially be in a sterile foil bag or the like. After removal from the foil bag, the containers 2 and 3 can be placed on both sides in such a way that the free ends of the line sections 4 and 5, with the aid of the insertion tip 6, penetrate the closure area 9, made for example of a rubber material, in such a way that the openings in the area of the insertion tip 6 and in the area of the stump 18 and thus the openings of both line sections 4,

5 can freely protrude into the interior of the container (compare Figures 5 and 15).

The coupling wall 8, 8 ′ optionally surrounds the container wall 10 in a protective manner, in each case centering the arrangement.

With a displaceable arrangement of the coupling walls 8,

8 ', the transfer cannula 1 can first be placed in the stretched, ie pulled apart position on a container 3, after which a loading container 2 from above onto the opposite end of the line sections 4 and 5 is put on. The Ankopp treatment walls 8 and 8 ', which were previously brought into a telescopic position, offer the containers 2 and 3 a guide in the course of an onerous downward movement of the upper (first) container 2 downward, whereby its closure area 9 is pierced by the insertion tip 8 which is to be turned The mounting wall 7, 7 'together with the projection 22 is also displaced downwards and as a result the insertion tip 6 pointing in the direction of the lower (second) container 3 is forced through the associated closure area 9.

As a result of the telescopic sliding into one another of the mounting wall 7, 7 'and the coupling walls 8, 8', a final transition position results in which the insertion tips 6 also extend over the planes of the end edges 16 of the coupling walls 8 and 8 'protrude (see Figure 15).

In the course of transferring, for example, liquid from the first (upper) container 2 into the second (lower) container 3, a fluid transport is achieved via one of the line sections 4 or 5, while via the other line section 5, 4 a discharge or Ventilation is achieved.

The above explanations serve to explain the inventions covered by the application as a whole, which also develop the state of the art independently by at least the following combinations of features, whereby two, more or all of these combinations of features can also be combined, namely:

A transfer cannula, which is characterized in that the coupling wall 8 in the direction of the longitudinal extension L of the line Sections 4, 5 protrudes beyond the insertion tip 6 and that the recess 15, arranged in relation to the end edge 16, widens in a V-shape.

A transfer cannula, which is characterized in that the transfer cannula 1 is designed to be mirror-symmetrical with respect to a center plane running transversely to the longitudinal extent L of the line sections 4, 5.

A transfer cannula, which is characterized in that the recess 15, starting at the respective insertion tip 6 up to the end edge 16 of the coupling wall 8, has an extension which corresponds to a third or more of a length g of a line section 4, 5 closed in the circumferential direction .

A transfer cannula, which is characterized in that the line sections 4, 5 are surrounded by a first cylinder area Zi, which forms a mounting wall 7, for a closure area 9 of a container 2, 3 and that the recesses 15 in a second , are formed coaxially to the first cylinder area Zi, the coupling wall 8 forming the cylinder area Z2, which extends at a radial distance from the first cylinder area Zi.

A transfer cannula, which is characterized in that a terminal edge 17 of the first cylinder region Zi that extends transversely to the longitudinal direction L of the line sections 4, 5 is protruded by the insertion tip 6.

A transfer cannula, which is characterized in that the first cylinder region Zi is designed to be circumferentially closed. A transfer cannula, which is characterized in that ribs 14 extending in the longitudinal direction L of the line sections 4, 5 are formed on the second cylinder region Z2 on the outer wall side.

A transfer cannula, which is characterized in that, based on a longitudinal extension L of the line sections 4, 5, starting from a central region, two mounting walls 7, 7 'extending in opposite directions are provided, on each of which a coupling wall 8, 8' is slidable is held.

A transfer cannula which is characterized in that the coupling wall 8, 8 'is guided non-rotatably on the holding wall 7, 7'.

A transfer cannula, which is characterized in that the holding wall 8, 8 'has a longitudinal slot 19 in which a radially inwardly facing rib 20 of the coupling wall 8, 8' engages.

A transfer cannula, which is characterized in that, with a view to a longitudinal extension L of the line sections 4, 5, a radially extending projection 22 is formed in the middle area on the mounting wall 7, 7 ', against which a coupling wall 8 , 8 'can come to the plant in the retracted state.

All the features disclosed are essential to the invention (individually, but also in combination with one another). The disclosure of the application hereby also includes the full content of the disclosure content of the associated / attached priority documents (copy of the previous application), also for the purpose of including features of these documents in the claims of the present application. Characterize the sub-claims, even without the features of a referenced claim, with their features independent inventive developments of the prior art, in particular special to make divisional applications on the basis of these claims. The invention specified in each claim can additionally have one or more of the features provided in the above description, in particular provided with reference numbers and / or specified in the list of reference numbers. The invention also relates to design forms in which some of the features mentioned in the preceding description are not implemented, in particular special insofar as they are recognizable for the respective purpose borrowed or can be replaced by other technically equivalent means.

List of reference symbols

1 transfer cannula 26 collar section

2 first container 27 spring section

3 second container 28 spreaders

4 line section 29 opening area

5 line section

6 tip

7 bracket wall

7 'mounting wall a length

8 Coupling wall b length

8 'coupling wall c length

9 Closure area d width

10 Container wall width

11 transverse wall f length

12 radial rib g length

13 radial rib x longitudinal center axis

14 rib

15 recess

16 final edge

17 End edge E transverse plane

18 Butt L lengthwise

19 longitudinal slot Zi first cylinder area

20 rib Z2 second cylinder area

21 spacer rib

22 advantage

23 straight section

24 stop rib a angle

25 counter stop rib

Claims

Expectations Transfer cannula (1) for the sterile transfer of fluids to powders or fluids to fluids from a first container (2) into a second Be ratio (3), with two line sections (4, 5) running in the same direction, which run in the longitudinal direction (L) of the line sections (4, 5) are of different lengths, the longer line section (4, 5) terminating in a plug-in tip (6), the line sections (4, 5) being firmly connected to a cylinder-shaped surrounding the line sections (4, 5) coupling wall (8) are formed, the coupling wall (8) assigned to each insertion tip (6) and with respect to the longitudinal direction (L) of the line sections (4, 5) on both sides opposite one up to a terminating edge (16) of the coupling wall (8) extending recess (15), in which in a side view in each case an insertion tip (6) of the line sections (4, 5) is exposed, characterized in that the coupling wall (8) in the direction of the length The length of the line (L) of the line sections (4, 5) protrudes beyond the insertion tip (6) and that the recess (15) associated with the terminating edge (16) widens in a V-shape. Transfer cannula according to Claim 1, characterized in that the transfer cannula (1) is designed to be mirror-symmetrical with respect to a center plane running transversely to the longitudinal extension (L) of the line sections (4, 5). Transfer cannula according to one of claims 1 or 2, characterized in that the recess (15), starting at the respective insertion tip (6) to the end edge (16) of the coupling wall (8), has an extension that is one third or more of one Length (g) a line section (4, 5) closed in the circumferential direction speaks accordingly. 4. Transfer cannula according to one of the preceding claims, characterized in that the line sections (4, 5) of a first, a mounting wall (7) forming cylinder area (Zi) for a Ver closing area (9) of a container (2, 3) are surrounded and that the recesses (15) are formed in a second cylinder area (Zi) which is provided coaxially to the first cylinder area (Zi) and forms the coupling wall (8) and extends at a radial distance from the first cylinder area (Zi) . 5. Transfer cannula according to claim 4, characterized in that a transverse to the longitudinal direction (L) of the line sections (4, 5) extending from the end edge (17) of the first cylinder region (Zi) is protruded by the insertion tip (6). 6. Transfer cannula according to one of claims 4 or 5, characterized in that the first cylinder region (Zi) is formed from being closed all round. 7. Transfer cannula according to one of claims 4 to 6, characterized in that on the second cylinder region (Zi) on the outer wall side in the longitudinal direction (L) of the line sections (4, 5) extending ribs (14) are formed. 8. Transfer cannula (1) for the sterile transfer of fluids to powders or fluids to fluids from a first container (2) into a second container (3), with two line sections running in the same direction (4, 5), which in the longitudinal direction (L) of the line sections (4, 5) are different Lich long, the longer line section (4, 5) expires in an insertion tip (6), the line sections (4, 5) are surrounded by a Ankopp treatment wall (8, 8 '), the radially outward to a Bracket wall (7, 7 ') runs, the coupling wall (8, 8 ') is supported displaceably in the longitudinal direction (L) of the line sections (4, 5) on the mounting wall (7, 7'), characterized in that, based on a longitudinal extension (L) of the line sections (4, 5) going from a central area two oppositely extending mounting walls (7, 7 ') are provided, on each of which a coupling wall (8, 8') is slidably mounted. 9. Transfer cannula according to claim 8, characterized in that the coupling wall (8, 8 ') is guided non-rotatably on the mounting wall (7, 7'). 10. Transfer cannula according to one of claims 8 or 9, characterized in that the mounting wall (8, 8 ') has a longitudinal slot (19) in which a radially inwardly pointing rib (20) of the coupling wall (8, 8') ) intervenes. 11. Transfer cannula according to one of claims 8 to 10, characterized in that with a view to a longitudinal extension (L) of the line sections (4, 5) in the central area on the mounting wall (7, 7 ') a radially extending projection ( 22) against which the coupling wall (8, 8 ') can come to rest in the retracted state.