FI64780C - MED FOERBINDNINGSPORT FOERSEDD AV PLASTFOLIE TILLVERKAD FOERPACKNING SAMT FOERFARANDE FOER TILLVERKNING AV FOERBINDNINGSPORTEN - Google Patents

Description

64780

A packaging made of plastic film with a connection port and a method of forming a connection port of a package.

The invention is more particularly directed to a package made of a plastic film provided with a splicing port 11a in the preamble of claim 1. The package is intended for use in the medical field, e.g. in the storage of blood or organic tissues, in the storage and use of medicinal products, in particular infusion solutions or the like, the plastic material of the package being chosen so as not to affect the packaged goods. Drugs can be mixed into the contents of the package, for example, in connection with the use of infusion solutions, via the connecting port in the plastic film of the package. The invention further relates to a method of forming a connection port of a package on the surface of a packaging film.

A patent 45 459 is known from the package according to the preamble of the claim, which is provided with a splicing port. The package is made of a plastic laminate consisting of a thermoplastic inner layer and a non-Tenno-plastic outer layer. The connecting port is welded to a thermoplastic cover 1 which covers the opening in the package. The cover film of the connecting port is in turn fitted inside the package and welded to the thermoplastic inner layer of the packaging material. Packaging such as that described above is complex in its manufacturing technique.

In particular, from the point of view of use, it can be stated that the gating port, due to its structure, can only be used sterile once. And the removable cover of the gate mouth flange does not guarantee sterility in all conditions.

Gil-pat en 11 i discloses a package with a splice port1, in which the cover part of the gate is provided with round trays 11a at which the cover part of the gate can be removed. to contact the tip of the cannula with the contents of the package. The outer shell of the connecting port to which the cover part is connected in said attenuation groove 2 64780

In point, it is designed so that it can only be manufactured as an injection molding machine. This method of manufacturing is very expensive and the manufacturing cost of the package is considerably increased by the fact that, according to the patent, the strength of the material at the weakening groove changes in the direction of the weakening groove. From a functional point of view, however, such a weakening groove is uncertain as to the preservation of the sterility of the lily gate. Stress on the lid part during manufacture, transportation and storage can break the groove. In addition, it is uncertain whether such a Cover Part can be removed without damaging the port itself.

It is an object of the present invention to provide a plastic film package for use in the medical field, which eliminates the above-mentioned disadvantages of the prior art packages and thus raises the state of the art.

Characteristic features of the package and method according to the invention appear from the appended claims.

A particular advantage of the package according to the invention is that the sterility of the connecting port is ensured at the same time that the removal of the connecting port cover can be carried out very quickly and simply. In addition, the sealing technique of plastic films can be advantageously used in the manufacture of the connecting nipple, whereby the series production technique can be advantageously applied in the method.

The invention, as well as the advantages achieved by it, are further illustrated in the following description, which refers to the accompanying drawings, in which

Fig. 1 shows a perspective view of an embodiment of a package made of plastic film to which a connecting port according to the invention is attached; Fig. 3 shows a section A-A of Fig. 1 on a larger scale, and Fig. 3 shows a perspective view of a connecting port forming method according to the invention.

The embodiment of the package according to the invention shown in Figure 1 is formed from a tubular blank, the package comprising a front wall 1 and a back wall 2. A front port 1 according to the invention is formed on the front wall 1, generally indicated by reference numeral 3 · Of course, there may be several port ports 1 and / or alternatively in the wall 2. The tubular blank 1, 2 is closed at its ends by transverse seams or the like 4 to 5 in order to close the packaging space between the walls 1 and 2. Between the seals, liquid-tight plastic pipes 6, 7 are arranged, the first 6 of which are used for filling the package and which are closed by sealing after filling. The second plastic tube 7, in turn, is provided with a partition wall which is opened, for example, to introduce the infusion solution contained in the bag into a patient's vein in a manner known per se. Of course, the location and number of connecting tubes 6 and 7 may vary as needed and are not actually within the scope of this invention. Likewise, the osport t i of the package 1 according to the invention can be formed by the so-called in a perforated package, wherein the walls 1 and 2 are connected to each other by a heat seal or the like circulating around the package. The wall films used are those approved for the storage of substances used in the medical field, e.g. PVC plastic age 1 butter.

Figure 2 shows in section A-A of Figure 1 the structure of the connecting gate. The wall bracket 1 or 1 e 1 with an annular seam or the like 8 is attached to the film 1 by a cover film la y, which acts as a protective part of the connecting port, e.g. made of PVC plastic. A Nest e lock is fitted on the inside of the ring-shaped seam 8 and the cover Ivopa 1 an y, which is a part 10 made of rubber suitable for medical purposes. The corner part 10 is circular in shape with a diameter of e.g. about 10 mm, the thickness of the piece being e.g. about 3 mm. Due to the flexibility of the rubber, the hole of the cannula closes if the tip of the cannula is pulled out of the connecting pores.

To open the connection port for sterile drug addition, e.g. when using a package in an infusion solution bag, a tear strip 11 acting as a cover part is attached to the cover film 9 on the top surface of the rubber part 10. In the embodiment according to Figures 1 and 2, the tear strip 11 has a circular shape.

The central part 12 of the tear strip 11 and the cover film 9 are sealed or joined together by point sealing so that the tear strip film, which can be e.g. cheaper PVC plastic film quality, and the cover film 9 are so firmly attached that and 11 from the edge 14 of the seal 12.

In this case, when the tear strip 11 is pulled from the rim 13, the tear strip is released, whereby the upper surface of the rubber part 10 under the cover film 9 is exposed and a cannula or the like can be pushed through the rubber piece 10 and the film 1 into contact with the package. Of course, the connection of the parts 1, 10, 9 »12 is carried out under sterile conditions, so that the connection of the cannula can take place sterile.

Figure 3 schematically shows the shape of the connecting port according to the invention on the surface of the package 1. The wall film on the surface of which said connecting port is formed is generally indicated by the reference number 1. The wall film-vc 1 can be either a part of a tubular film, the package being closed as a transverse seam 11a 4,5 (cf. Fig. 1), or a packing From the film, in which case the bag is formed by sealing around it. Naturally, before the seams, the bag is provided with the fractions 1 and 6, 7 according to Figure 1.

64780 5

The formation of the actual package is not covered by this application and is therefore not shown in more detail in Figure 3.

A counterpart 22 is arranged below the membrane 1 as shown in Fig. 3. In the first step, the cover film blank 15 is provided with a tear strip 11, a sealing tool 16, which performs the sealing 12 against the counterpart 18. The direction of movement of the sealing tool 1 is indicated by the arrow 19. The grooving tool 16 may be a pre-groove. circular in cross-section and about 2.5 mrn in diameter. The sealing of the buttocks 11 can at this stage be performed on a continuous strip 20, which in the next step is cut into rectangular cover film pieces 15. The size of the butt strip 11 is selected relative to the sealing tool 16 acts as a tear strip when using a connecting port 13 · In the embodiment according to Figure 3, the skirt 13 is a rim surrounding the seam 12. After the covers 15 have been cut off, they are placed at the wall distance 1 placed on the abutment 22 and a rubber part ID is placed between the membranes 1 and 15. Figure 3 shows this situation in the so-called ploided. The parts 1, 10, 15 are then joined together by means of an annular sealing tool 17 (the direction of movement is indicated by the arrow 21) against the abutment 22, whereby an annular seal 8 is formed (Figures 1 and 2). In addition, if necessary, the film blank 15 can be cut along the outer edge of the seal 8, e.g. simultaneously with the seal. The annular sealing joint 17 vpi includes an inner pusher which secures the parts 1, 10 and 15 to each other during sealing.

As described above, the cover film 9 is firmly attached to the film 1 on the one hand, and the rubber part 10 is firmly attached between itself and the film 1 on the other hand.

The above-provided package equipped with a splice port 11a and a method for forming a splice port are, in this context, 6,647,80. Naturally, embodiments of the connecting port according to the invention as well as the method of its formation may vary according to the appended claims.

Claims (6)

64780 Patent Application: A package made of plastic film with a connecting port, the connecting port (s) (3) being fixed to the wall (1, 2) of the package, the connecting port comprising a protective part (9) fixed to the film (1, 2) and provided with a removable lid part, and a liquid lock (10), e.g. a rubber part, placed between the membrane (1, 2) and the protective part (9), characterized in that a cover tear strip (11) is attached to the upper surface of the cover (9) acting as a protective part of the liquid lock (10) ), the edge (13) of which, by acting on the flange (13), detaches a part of the cover film along the edge (IA) of the attachment point (12). Packaging according to Claim 1, characterized in that the tear strip (11) and the cover strip (9) are heat-sealed to one another. A package according to claim 1, characterized in that the tear strip (11) is circular and the attachment point (12) is arranged in the middle of the tear strip (11), the flange (13) being an edge s surrounding the attachment point. A method of forming a connecting port according to claim 1, characterized in that in the first step a tear strip (11) is attached to the cover film (9) and in the second step the cover film is attached to the wall film by an annular attachment (8). 64780 5. A method according to claim 4, characterized in that the rips (11) are attached to the heat seal 11a on a continuous strip (20) at regular intervals and that the strip (20) is cut into rectangular shapes. cover film for la-blanks (15) · Method according to Claim 4, characterized in that the annular fastening (8) is a heat seal, in connection with which the excess edge part of the cover blank (15) is removed.