Drug Bag Container

Abstract

A drug bag is housed inside a container, which has two shells movable between an open position and a closed position; and a gripper fitted outside the shells and defined by two jaws movable between a grip position and a release position to grip and release at least one conduit allowing access to the content of the bag.

Description

The present invention relates to a drug bag container.

BACKGROUND OF THE INVENTION

The drug industry employs bags made of flexible material, and each normally comprising an injection conduit and a feed conduit, which project from one edge of the bag to inject a drug into the bag, and to draw the drug from the bag respectively.

Bags of this sort are normally used on automatic drug manufacturing machines comprising a pocket store with a number of pockets, each for receiving and retaining a respective bag; a metering station for producing a drug inside each bag; and a grip-and-carry device for transferring the bags between the pocket store and the metering station.

To attach the bag to the pocket store and grip it using the grip-and-carry device, the bag is associated with a gripper comprising two contoured, substantially flat jaws, which are shorter in height than the injection and feed conduits, and are hinged to each other to rotate with respect to each other between a grip position gripping the injection and feed conduits, and a release position.

The gripper being designed to only grip the bag at one end, the bag is free to swing as it is being transferred by the grip-and-carry device. As a result, the bag is subject to shock and possible damage, the grip-and-carry device is forced to operate at a relatively slow travelling speed, and the bag takes a relatively long time to stabilize for operations such as weighing, thus resulting in relatively long operating cycles and relatively low output of known automatic machines of the type described.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a straightforward, low-cost drug bag container designed to eliminate the above drawbacks.

According to the present invention, there is provided a drug bag container as claimed in the accompanying Claims.

BRIEF DESCRIPTION OF THE DRAWINGS

A non-limiting embodiment of the present invention will be described by way of example with reference to the attached drawings, in which:

FIGS. 1 and 2 show views in perspective of a preferred embodiment of the container according to the present invention in two different operating positions;

FIG. 3 shows an exploded view in perspective, with parts removed for clarity, of the FIGS. 1 and 2 container;

FIG. 4 shows a view in perspective of a detail in FIGS. 1 and 2.

DETAILED DESCRIPTION OF THE INVENTION

Number 1 in the attached drawings indicates as a whole a container for a drug bag 2.

Bag 2 is made of flexible material, is substantially rectangular, and has two access conduits 3 and 4 projecting from an end edge 5. Conduit 3 is a feed conduit for drawing the drug from bag 2; and conduit 4 is an injection conduit for injecting the drug into bag 2.

Container 1 comprises two rigid shells 6 and 7 hinged to each other to rotate, with respect to each other and about a hinge axis 8, between an open position (FIG. 4), and a closed position (FIGS. 1 and 2) in which shells 6 and 7 define a compartment 9 for housing bag 2, and which has an opening 10 formed through shells 6 and 7 to allow conduits 3 and 4 to project outwards of compartment 9.

Container 1 also comprises a gripper 11 fitted outside shells 6 and 7, at opening 10, to allow a robot arm of an automatic drug manufacturing machine (not shown) to grip and retain bag 2.

Gripper 11 comprises two flat, substantially rectangular jaws 12: one (hereinafter indicated 12a) is fixed to shell 6, is substantially L-shaped, and has an elastically deformable tab 13; and the other (hereinafter indicated 12b) is hinged to jaw 12a to rotate, with respect to jaw 12a and about a hinge axis 14 parallel to axis 8, between a grip position (FIG. 3) gripping conduits 3 and 4, and a release position (FIG. 4) releasing conduits 3 and 4.

Measured parallel to axis 8, jaws 12a and 12b are shorter in height than conduits 3 and 4, to allow conduits 3 and 4 to project outwards of gripper 11 when jaws 12a and 12b are in the grip position.

Jaws 12a and 12b are locked in the grip position by a tooth 15, formed on the free end of tab 13, engaging a recess 16 formed on the free end of jaw 12b.

Bag 2 also comprises a feed tube 17, which is connected to conduit 3, extends outside shells 6 and 7, extends substantially L-shaped about gripper 11 and a minor lateral face of each shell 6 and 7, and is protected by an elongated, substantially parallelepiped-shaped side cover 18.

Cover 18 is bounded by a flat face 19 positioned substantially contacting shells 6 and 7, and is fitted removably to shells 6 and 7 by a number of teeth 20, projecting crosswise to axis 8 from face 19, engaging corresponding cavities 21 formed through shells 6 and 7.

Cover 18 has a first opening 22 formed through face 19 to permit insertion of tube 17 inside cover 18, and which is partly closed by a rubber partition 23 with a slit 24 engaged by tube 17.

Cover 18 has a second opening 25, which is formed through a face 26, substantially opposite and parallel to face 19, of cover 18, and is closed partly by a door 27 for access to tube 17, and partly by a rubber partition 28 with a slit 29 engaged by tube 17.

Container 1 also comprises a substantially parallelepiped-shaped cover 30 fitted to shells 6 and 7, crosswise to cover 8, to cover conduits 3 and 4, gripper 11 and part of tube 17, and which is fixed removably to cover 18 by a tooth 31, projecting parallel to teeth 20 from cover 30, engaging a cavity 32 formed through face 19.

In actual use, once bag 2 is inserted between shells 6 and 7, shells 6 and 7 are closed; feed tube 17 is connected to feed conduit 3; and side cover 18 is fitted to shells 6 and 7 to cover tube 17.

At this point, the assembly formed by bag 2, shells 6 and 7, tube 17 and cover 18 is fed through said automatic machine (not shown) to inject at least one drug and/or at least one solvent into bag 2 to produce the drug.

Once the drug is produced, cover 30 is fitted onto shells 6 and 7 and fastened to cover 18 (FIG. 1), and container 1 is delivered to a hospital pharmacy.

To administer the drug, door 27 in cover 18 is opened, tube 17 is extracted from container 1 and bent through partition 28 (FIG. 2), door 27 is closed, and container 1 is hung from a known supporting rod (not shown) by a fastening device 34 on shell 6.

Claims

1. A container for a drug bag (2), the container being characterized by comprising two shells (6, 7) movable between a closed position, in which the two shells (6, 7) define a compartment (9) for housing the bag 2 and an open position; and a gripper (11) fitted outside the compartment (9) and comprising two jaws (12a, 12b) movable between a grip position and a release position to grip and release at least one access conduit (3, 4) allowing access to the content of the bag (2).

2. A container as claimed in claim 1, wherein a first said jaw (12a) is fixed to a first said shell (6), and a second said jaw (12b) is movable with respect to the first jaw (12a) and a second said shell (7).

3. A container as claimed in claim 1, and also comprising a first cover (30) fitted removably to the shells (6, 7) to cover the gripper (11) and the access conduit (3, 4).

4. A container as claimed in claim 1, wherein the bag (2) also comprises a feed tube (17) connected to the access conduit (3, 4), outside the two shells (6, 7); the container also comprising a second cover (18) fitted removably to the shells (6, 7) to cover the feed tube (17).

5. A container as claimed in claim 4, wherein the second cover (18) has a door (27) for access to the feed tube (17) housed inside the second cover (18).

6. A container as claimed in claim 4, wherein the second cover (18) is bounded by a first face (19) positioned substantially contacting at least one said shell (6, 7), has a first opening (22) formed through the first face (19), and has a first rubber partition (23) at least partly closing the first opening (22) and having a first slit (24) engaged by the feed tube (17).

7. A container as claimed in claim 4, wherein the second cover (18) is bounded by a first face (19) positioned substantially contacting at least one said shell (6, 7), and by a second face (26) opposite the first face (19), has a second opening (25) formed through the second face (26), and has a second rubber partition (28) at least partly closing the second opening (25) and having a second slit (29) engaged by the feed tube (17).

8. A container as claimed in claim 1, and also comprising a fastening device (34) formed on the shells (6, 7) and by which to attach the container.