DE6805649U - FLEXIBLE PLASTIC BAG FOR PARENTERAL LIQUIDS OR THE LIKE. - Google Patents

Description

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Patent attorney

Kar! A. B rο s e

Dip! -Ir.g.

D-8023 /v'.ü.idien - Pullach
Wienersir.2, T.Mun.7S30570,7931782

ν In / 1 / 'Po

Munich-Pullach, November 6, 1968

American Hospital Supply Corporation 1015 Grandview
Avenue, Glendale, California 91,201, USA

Flexible plastic bag for parenteral
Liquids or the like.

Blood is often kept in flexible bags and these bags
may have a neck or spout for withdrawing blood. To remove blood from the pouch, a sharp, cylindrical tip is inserted into the neck and pierced with a protective cover to gain access to the blood.

The! Inflation has set itself the goal of an improved
to create sterile closure for such bags. The innovation essentially consists of a combination of a rear stub-like neck that is tightly connected to the bag, a tear-off cap?
sealed outer end of the tubular neck, and one
outer clamping flange on the tubular neck below
the cap closure, but at a distance from the bag wall. In this way, one can engage one's fingers between the wall of the bag and the constraining flange when tearing off the cap to open the nozzle. This gripping one
iianöüii ^ ensures that the fingers stay well below the critical outer end of the socket and you get a
luögliciikeix to be able to come across when the point in the
Nozzle is pushed E ^ n.

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Further advantages and details of the innovation emerge from the following description of some exemplary embodiments with reference to the drawings. In this shows:

Fig. 1 is a front view of a blood bag according to Innovation;

Pig. 2 shows a sectional view along the line 2-2 of FIG. 1, a first embodiment of the The innovation with the pierceable membrane is shown, which is connected to the bag wall Part is;

3 shows a sectional illustration similar to that of FIG. 2, but rotated by 90 around the longitudinal axis to illustrate the laterally protruding tab, which is used to tear off the cap; and

FIG. 4 is a sectional illustration similar to that of FIG. 2, i ι the a second Ausfahrungsfcrm the presenter. the Innovation is shown, wherein the pierceable membrane is connected to the tubular neck Part is.

In Figure 1, a flexible blood bag is denoted by 1, the has an opening structure 2 at its upper end, and a hanger structure 3 at its bottom end, around which The pouch can be hung upside down when giving blood. On each side of the bag are circular tabs 4, 5, 6 and 7 for holding small sample tubes intended to be used for taking blood samples for the group, Serve cross match for compatibility, etc.

The closure at the top of the bag consists of a dispensing tube 8 with an attached needle assembly 9 for blood in the To collect bags, and a large number of pipe sockets 10 and 11 for discharging blood from the bag, which over-

walk.

The innovation has to do with the construction of the pipe socket, as in the first embodiment (Figures 2 and 3) and also illustrated in a second embodiment (Figure 4) are. In the first embodiment, the tubular one goes Neck contiguous into a base flange 12 at its lower part and this base flange is evenly through a Polyvinyl chloride solution or tightly connected to the bag wall 13 by heat. The bag wall itself forms a pierceable one Membrane 14, which the channel 17 and the base flange opening 15 closed. Before the membrane 14 is pierced, the blood is there completely sealed in the bag after the blood has been collected with the aid of the donor tube 8 and this tube is sealed became. When the bag is opened a cap-like closure 16 is removed and a cylindrical tip is pushed down through the channel 17 until this point the membrane 14 pierces.

When the tip enters the channel 17, a constriction seals 18 on the inner wall of the nozzle neck, the tip from liquid-tight. A first wall section 19 of the channel converges inside from its upper section on in a little Angle to the longitudinal axis of the neck canal and merges into a second wall section 20, which in turn becomes larger Converted angle to the channel longitudinal axis inward, so that the constriction 18 arises at the lower end of the second section. A third wall section 21 of the channel converges from the lower end of the nozzle towards the constriction. It was established that this wall construction of the channel makes different piercing tips usable, each of which is a different one having outer diameter. Ks were e.g. tips or needles with a diameter range from 5 mm to 6 mm used successfully in this canal construction.

As described above ", a cylindrical tip in u ^ n canal pushed until it breaks through the pierceable membrane. It is of the utmost importance to keep this channel and tip sterile so that the tip does not contain bacteria transfers into the bag. In the case of the innovation, the channel of the tubular neck is opened with the aid of a tear-off closure 16 kept sterile. The closure 1b has an upper wall 22 and a downwardly directed edge 23, the upper Includes section of the nozzle and seals evenly. Of the Edge is divided into an upper section 24 and a lower section 25, which at a section mj t a circular Groove 26 merge into one another. The rana can be between 0.13 and 0.33 mm thick at the groove, but preferably weira approx. 0.25 mm thick. This groove 26 is almost the same Height as the upper end of the nozzle, so that the forces when tearing off are exerted through the outer edge of the nozzle focus the groove.

When a nurse or a doctor wants to open a nozzle, so sets ^c r a thumb and a forefinger of one hand under the laterally projecting Anfassflansch 27, the shutter groove is zwischer 26 and base flange Deii 12th With the other hand he grips the laterally protruding tab 28 and pulls it upwards, the closure being torn open at the groove leading around it. By holding one hand further under the engagement flange, he pushes the perforation tip downward through the neck canal until the membrane 14 is pierced. In this way, the hand holding the nozzle is kept away from the upper critical end and domed section of the nozzle, the opening of which is now exposed after the upper section of the closure has been removed.

In the above description of the first embodiment the perforable membrane part of the bag wall. How to Fix ι seen from the second embodiment according to FIG. 4, dxe

perforable membrane one connected to your nozzle Wall 29 should be across the canal. In this latter embodiment, the nozzle can be placed directly between two layers of the bag material with these layers forming the walls of the bag, and no base flange is required.

Bag and closure according to the present innovation are preferably made αu.a soft polyvinyl chloride, but there may be other medical grade acceptable ⁰ thermoplastic Ma + erialien be used.

All of the details explained in the description and illustrated in the drawing are important for the innovation.

Claims (8)

Protection claims 1. Flexible plastic bag for parenteral liquids, whose flexible turn merge into a neck, in the neck channel of which a pierceable membrane is provided transversely to the channel, thereby characterized in that a removable cap (16) which is on the outer end of the type of a pipe socket (11) formed neck is seated in a sealing manner, the channel surfaces and the membrane are sealed in a sterile manner, and that a outer flange (27) is formed on the connecting piece (11), so that the nozzle (11) can be grasped with one hand while one pierce the membrane with a point. 2. Apparatus according to claim 1, characterized in that the membrane (14) is formed by part of the bag wall. 3. Apparatus according to claim 1, characterized in that the membrane (29) is arranged separately from the bag wall and is formed by a transverse edge arranged within the neck channel. 4. Apparatus according to claim 1, 2 or 3, characterized in that the inner wall of the neck channel (17) from each end of the connecting piece (11) converges inwards to form a constriction (18) that can accommodate tips or needles of different diameters. 5. Device according to claims 1, 2, 3 or 4, characterized in that the tear-off cap (22) one around the circumference has surrounding tearable groove (26). 6. Apparatus according to claim 5, characterized in that the tear-off cap has a laterally protruding tab (28) on which one can pull around the cap (22) along the circular tear off the peripheral groove (26). 7. Device according to one or more of the preceding ones Claims, characterized in that the bag (1), nozzle (11) and tear-off cap (22) are made of soft polyvinyl chloride ". 8. Provision for one or more '. ", The previous one Speech, characterized in that two or more nozzles are arranged on a bag.