Patent Application
20080195077
The present invention relates to a disposable container, in particular a disposable syringe, and a method for labeling said container.
As is known, disposable syringes are filled with the relative medicine during their assembly, in a sterile environment.
The transparent body, usually cylindrical, of each syringe normally bears graduated marks, which may be stamped and/or molded on it, to allow, for example, partial use of the medicine according to the dose required for the patient.
In many cases, in addition to the graduated marks, the syringe body must also bear a label relative to the medicine it contains. In such cases, to prevent the label from covering and hiding the graduated marks on the syringe, the width of the label is less than the outer extension of the syringe body. In this way, the label can be wrapped around the syringe body except for the longitudinal band of the body bearing the graduated marks.
However, in some cases, in particular in the case of syringes with a small cross-section, the width set for the label may be so low that the most common automatic labeling machines have difficulty applying the label.
Attempts were made to solve the problem by using labels themselves bearing the graduated marks. That allows the width of the label to be substantially equal to or even slightly greater than the outer extension of the syringe body. However, the graduated marks were not very reliable because they were affected by possible errors, although small, in the application of the label.
The aim of the present invention is to provide a container such as a disposable syringe and a method for labeling it according to which the label can easily be applied without compromising the legibility of the graduated marks on the syringe.
Accordingly, the present invention provides a disposable syringe and a method for labeling it, as described in the claims herein.
The present invention is now described, by way of example and without limiting the scope of application, with reference to the accompanying drawings, in which:
With reference to
The body 2 is cylindrical and has a central longitudinal axis A, along which the plunger 3 slides. At a longitudinal band, the body 2 bears, printed and/or molded, graduated marks 4, whose function is to allow partial use of the medicine, according to the dose required for the patient.
At the longitudinal end from which the plunger 3 comes out, the body 2 has a grip collar 5, whilst at the opposite longitudinal end the body 2 is closed down into a central through-hole by a housing 6 having the shape of a truncated cone, a needle 7 engaging coaxially in the housing 6.
Advantageously, wrapped around the body 2 but not necessarily through 360°, about the axis A, there is an adhesive label 8 describing the medicine. The special feature of this label is that it has a transparent portion 9 placed over the graduated marks 4. In particular, as
The label 8 is applied on the body 2 using the packing machine illustrated in
The machine 10 comprises a carrousel 11 which rotates with a stepping motion about a vertical central axis B, clockwise in
The carrousel has a plurality of outer cavities 12, evenly distributed about the axis B and each designed to convey a syringe 1, with its axis A vertical and with the needle 7 pointing downwards, on a circular path P.
The path P extends between a loading station S1, in which the syringes 1 are inserted in the respective cavities 12, and an unloading station S3, where each syringe 1, after being checked, is taken out of the respective cavity 12 and directed towards a rejection path or an acceptance path.
Inserted between the stations S1 and S3 there is a labeling station S2, where each syringe 1 receives its label 8 and along which each syringe 1 has the label 8 wrapped around it like a tube.
Converging at the station S2 infeed I there is a line 13 designed to feed an orderly succession of labels 8. The line 13 comprises a device 14 for unwinding a continuous web 15 carrying labels 8, a device 16 for recovering the web 15, after the web, having passed through the station S2 infeed I, no longer has labels 8 on it, a first web 15 return roller 17, positioned between the device 14 and the station S2, a second web 15 return roller 18, positioned between the station S2 and the device 16, and a plate 19, around which, at the station S2 infeed I, the web 15 is wound, being suddenly bent in an L shape, so that the labels 8 peel off one after another.
As
The upper rollers 20 and the lower rollers 20 are mounted on the plate 21 and, respectively, on the plate 22 at the edges of respective C-shaped outer grooves 23 of the plates 21 and 22.
Relative to each cavity 12, the upper bases of the upper rollers 20 support the bottom of the collar 5 of the respective syringe 1, which is suspended in the cavity 12.
The above-mentioned infeed I is more precisely the infeed of a rolling channel 24, designed to wrap the body 2 of each syringe 1 in the respective label 8 by making the syringe 1 rotate about its own longitudinal axis A after a longitudinal edge of the label 8 has been brought into contact with the body 2 by the line 13.
On one side the channel 24 is formed by the outside of the carrousel 11 with its idle rollers 20, and on the other side by a motor-driven belt 25, opposite the outside of the carrousel 11 at a constant distance, along an arc of the carrousel.
The belt 25 is looped around at least two pulleys 26 whose axes are parallel with the axis B and rotates anti-clockwise as illustrated in
At the station S2 and channel 24 infeed I, and precisely above the infeed I, there is a sensor 27 designed to detect the angular position of each syringe 1 so as to allow, as is explained below, synchronization of each syringe 1 with the respective label 8 so that the above-mentioned transparent portion 9 is placed over the graduated marks 4 on the body 2.
During machine 10 operation the syringes 1 are fed, each in its cavity 12, one after another in an orderly fashion and with a stepping motion from the station S1 towards the station S2, precisely towards the infeed I of the station S2 and the rolling channel 24. With the carrousel 11 paused, the syringe 1 at the infeed I is synchronized with the label 8 which the line 13 has, in the meantime, stopped in a predetermined position at the station S2 infeed I. Said synchronization, whose function is to ensure that subsequently the transparent portion 9 is precisely placed over the graduated marks 4, is carried out by rotating the syringe 1 at the infeed I at a constant speed about its own longitudinal axis A by means of the belt 25, using the sensor 27 to detect a marking 28 present on the syringe 1 collar 5, and calculating the time interval, from the moment of detection, for which the syringe 1 must be kept rotating, at said constant speed, for it to reach a predetermined angular position. Then, at the end of said time interval, after which the syringe 1 is in any case kept rotating, in a synchronized fashion the line 13 launches the label 8 in such a way that a longitudinal edge of the label makes contact with the syringe body 2. After the belt 25 has rotated the syringe 1 about its axis A until the label 8 is fully wrapped around the syringe, the belt 25 is stopped and the carrousel 11 moves forward one step.
Synchronization of the subsequent syringe 1 causes the syringe 1 which already received the label 8 to roll again about its axis A in the channel 24. According to alternative embodiments of this method, available to average technicians in the sector, as an alternative to the syringe 1 pause step, the syringe 1 may be kept moving and the sensor 27 can be oscillated or in any event moved over a predetermined stretch to follow syringe 1 feed, thus interacting with the latter.
Only after leaving the outfeed U of the channel 24 and the station S2, the labeled syringes 1 are taken from the carrousel 11 at the station S3.
According to an alternative embodiment, the belt 25 is continuously kept operating at a constant speed, as the carrousel 11 is gradually moved with a stepping motion, preferably so that the syringes 1 are rolled from the infeed I to the outfeed U of the channel 24 and the station S2.
According to another alternative embodiment, the sensor 27 is substituted by a camera 27. In this case, detection of the marking 28 is substituted with detection of an image of the syringe 1 coinciding with a sample image.
In this description the term graduated marks refers to a particular type of sign or indication reproduced on the particular type of disposable container represented by the syringe. However, for the purposes of this invention, the term graduated marks shall be considered non-limiting, such that it also comprises any text, logo, trade-mark or the like reproduced on the surface of a disposable container, whether it is a syringe, a vial or other type of disposable container. As already indicated, this description refers to a disposable syringe as a non-limiting example of a disposable container. In an equivalent way, the container could be a vial, an ampoule or the like, such as the cartridges for medicines used in the dental sector.
It shall be understood that equivalent to the solution in this description and claims, and therefore covered by this invention, is the application of a label which, although without any transparent portion, is wrapped around the container for an angle of less than 360°, such that it leaves uncovered the zone of the container where the graduated marks are located.
In other words, instead of using a label having a transparent portion intended to be placed over the graduated marks on the container, a label may be applied whose angular extension is less than that of the container circumference, such that the label does not cover the graduated marks and the latter are therefore legible even after application of the label. A label 8′ without a transparent window and suitable for this type of application is illustrated in
In contrast,
Obviously, the invention described above achieves the preset aims and it may be modified and adapted in several ways without thereby departing from the scope of the inventive concept indicated in the claims herein. Moreover, all details of the invention may be substituted by technically equivalent elements.
| Number | Date | Country | Kind |
|---|---|---|---|
| BO2007A000079 | Feb 2007 | IT | national |
