HU187907B - Opening together device for connecting single-use plastic bags and/or systems of therapeutic and other purpose having self-contained spaces - Google Patents

Abstract

A transfer device for the interconnection of multi-part, single-use, synthetic bags (9, 10) and/or systems having independent compartments for therapeutic and other purposes includes a transfer tube (4) extendingthrough the wall (11) of the synthetic bag which is sealed by a closing diaphragm (2) in the transfer tube (4). A piercing tube (1) is arranged in the interior of the synthetic bag and extends into the transfer tube (4). An internal flange (5) is formed on the wall of the transfer tube (4) at its end adjacent the interior of the synthetic bag (9). A groove (3) on the stem of the piercing tube (1) receives the internal flange (5) in the closed position of the bag (9). The piercing tube (1) terminates in a plate (6) manually engageable from the outside to push the tip of the piercing tube (1) through the diaphragm (2), whereby to allow the contents of the bag (9) to be discharged via the tubes (1) and (4).

Description

(57) EXTRAS

The present invention comprises a connecting device for connecting disposable plastic bags (9, 10) and / or systems for disposable medical and other purposes with a through hole (4) in the wall (11) of the plastic bag, a sealing membrane (2) and a tubular piercing pen ( 1) having an inner flange (5) on the wall of the through hole (4) between the diaphragm (2) and the inner end of the plastic bag (9) and a groove (3) on the stem portion of the piercing pen (1), to which the inner flange (5) fits when closed.

Figure 2

-1187,907

FIELD OF THE INVENTION The present invention relates to a snap-in device for connecting single-use plastic bags and / or systems for disposable medical and other purposes by filtering an integral membrane with a piercing pen.

It is known in medical practice to use multi-part bags made of plastic mainly for blood collection, blood processing operations and the preparation of blood products. They are autoclaved with the appropriate solutions before use. The blood sampling bag contains a blood preservative solution. transfer bags may contain a resuspending solution. The preparation of blood products in multi-part bags is made possible by the opening of suitable structures between the self-contained bags, sometimes containing different solutions, separated by membranes.

Two types of these structures are known. One is U.S. Patent No. 3,921,634. U.S. Pat. You need an aid to open these structures.

The other is a puncture needle structure, which e.g. Nos. 2,026,086 and 2,331,687. See US Patent Specifications. The piercing needles manufactured so far are labor intensive and due to the use of multiple rubber hoses, the piercing process is not visually detectable.

Our goal is to eliminate the drawbacks of known structures, reduce manufacturing costs, ease of installation, eliminate the use of auxiliary equipment during manipulation, provide easy penetration and visual perception.

The present invention is based on the fact that, with proper locking of the elements of the structure, their operation is safe and their position is always perceptible. No need for auxiliary devices with the correct design of the piercing pen.

The invention thus provides a connecting device for connecting single-use plastic bags and / or systems for disposable medical and other purposes with a hole through the wall of the plastic bag, a sealing membrane therein and a tubular piercing mandrel disposed on the inside of the plastic bag. and an inner flange between the end of the plastic bag toward the inner space and a groove on the stem portion of the piercing pen, which, when closed, fits on its inner periphery.

In a preferred embodiment of the folding device according to the invention, the piercing pen has a presser foot at the end facing the inner space of the plastic bag.

In another preferred embodiment of the stapling device according to the invention, the presser foot has an opening, preferably a slit, next to the shaft of the piercing pen.

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the invention will be described in more detail with reference to the accompanying drawings, in which:

Figure 1 shows the connection of two self-contained plastic bags, a

Fig. 2 is a longitudinal sectional view of the jointing device in the closed state;

Figure 3 is open, while

Figure 4 shows the piercing pen in the marked section.

The plastic bags 9 and 10 shown in Figure 1 are connected by a tube. The folding device is located in the wall of the plastic bag 9.

The connecting device is shown in Figure 2. The wall 11 of the plastic bag 9 has a through hole 4 in it. It is closed around its center by the diaphragm 2 and an inner flange 5 is formed at the end towards the inner space of the plastic bag.

The tubular piercing pen 1 is disposed in the plastic bag side portion of the through hole 4. The piercing pen 1 can be made of injection-molding hard plastic of sufficient strength. A puncture 3 is formed on the stem portion of the puncture pen 1, with an insertion cone 8 on the tip side of the puncture pen for easy mounting. At the opposite end of the puncture pen 1 there is a presser foot 6 which is slit at one point parallel to the longitudinal axis of the puncture pen 1 through the slit 7.

The clamping mechanism works as follows. When closed, the inner flange 5 of the through hole 4 fits into the groove 3 of the piercing pen 1. At this point, the tip of the piercing pen 1 is at a safe distance from the diaphragm 2 to keep the through hole 4 closed, pushing the piercing pen 1 against the diaphragm 2 by pressing the soft wall of the plastic bag 9 by pushing the presser foot 6. The inner flange .5 then pops out of the groove 3 and the puncture pen 1 is free to pierce the membrane 2. The piercing pen 1 can be pushed until the presser foot 6 lies at the end of the through hole 4. The slot 7 in the presser foot 6 ensures that the plastic bag 9 is thus completely emptied.

The thickness of the diaphragm 2 and the safe distance of the tip of the puncture pen 1 when closed must always be determined by the design of the snap-in structure in view of the specific purpose.

Patent claims

Claims (4)

Connecting device 1 for connecting disposable plastic bags (9, 10) and / or systems for disposable medical and other purposes to the plastic bag wall (11) by a through hole (4) with a sealing membrane (2) and an inside of the injection bag. with a tubular piercing pen (1) characterized in that an inner flange (5) is formed on the wall of the through hole (4) between the membrane (2) and the inner end of the plastic bag (9) and on the stem part of the piercing pen (1). a groove (3) in which the inner flange (5) when closed 50 fit. Embodiment according to claim 1, characterized in that the piercing pen (1) has a presser foot (6) at the end facing the inner space of the plastic bag (5). 55 Embodiment according to claim 1 or 2, characterized in that the presser foot (6) has an opening, preferably a slit (7), adjacent to the shaft of the piercing pen. 4 pieces of figure -2187 907 NR0 ₄ : A 61 M 1/02 l.ábra -3187907 ISO ₄ : A 61 M 1/02