DE8901550U1 - Device for removing and storing used disposable needles from medical syringes - Google Patents

Description

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UEXKÜLL* STOLBERG PATENT ATTORNEYS

D-2000 HAMBURG 52

1. Dr. Axel Plätzer Hufnerstr. 110 2000 Hamburg 60

2. Dr. Reinhard Konig Immensee 12

2000 Norderstedt

BJROPEAN PATENT ATTORNEY

OR. J.-O. FRHR. von UEXKÜLL DR-ULRICHeRAFSTOLBERG CHPL.-1NQ. JÜRGEN SUCHANTKE DIPI—ING. ARNULF HUBER OR. ALLARD von &Kgr;&Agr;&Mgr;&Igr;&Idigr;&Kgr;&Egr; CHPL-SIOL. !NGEBORG VCrtELKER OR. PETER PRANCK

February 1989 2^042 ue/co

Device for removing and storing used ice cubes

The invention relates to a device for storing and removing used disposable cannulas provided with a bead or flange at the rear end from the front end of a medical syringe according to the preamble of the main claim.

Such devices are known, for example, from DE-PS 22 27 428 or US-PS 3 876 067. However, these devices have the disadvantage that they are only suitable for the disposal of used cannulas and can only accommodate a limited number of used cannulas, namely as many as the number of openings provided in the housing into which a single used disposable cannula is clamped.

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These devices also have the disadvantage that the operating personnel can injure and infect themselves when emptying the housing with the used needles in a foam block, which has recently become of vital importance, especially with regard to ElV infections, especially since, according to reports by J. Jagger et al in N. Engl. J. Meß. 319, pages 284 to 288 (1988), 35% of all needlestick injuries in hospitals occur with disposable syringes.

The invention has set itself the task of not only eliminating these disadvantages but also of ensuring safe disposal of a large number of cannulas immediately after use and in particular from the housing of a separator after the injections have been completed. device, but also to provide a device that is suitable for the sorted provision and transport of already filled medical syringes.

In hospitals, during the syringe round, e.g. for intravenous administration of medication or for blood sampling, the injection syringes with attached needles and needle protection caps for the various patients are currently transported on trays, although in hospitals It is usual to arrange and transport all syringes for each patient room with 4 to 6 patients on a tray. The syringes are not protected against slipping, rolling down or confusion. Since in the typical clinical situation the prescribing doctor does not is always the doctor who administers the injection, it can easily lead to confusion when applying the medication.

In order to avoid these disadvantages and to solve the above- mentioned problem, a device of the type mentioned at the outset is proposed, which is characterized according to claim 1, particular embodiments being mentioned in the subclaims.

Surprisingly, it has been shown that the patented device not only ensures safe disposal but also eliminates the last-mentioned disadvantages, whereby, Based on a known device for removing and storing cannulas, a syringe holder for the drawn-up syringes with cannula and cannula protection cap is now made possible in order to safely hold the syringes of different sizes and filling states before and after of the application and at the same time immediate visual control of the execution of the injection of the blood collection, and on the other hand also during disposal and emptying of the housing manual contact of the operating personnel with the used

Cannula to be excluded, since the used cannulas

can be disposed of from the collection container together with their protective cap.

In the following, the invention will be explained in more detail with reference to drawings, in which:

Figure 1: a perspective view of the device according to the invention,

Figure 2a - c: the working principle of the inventive

Device for (a) providing and (b) withdrawing the cannula and (c) removing the cannula with protective cap.

Figure 3a - et different embodiments of separating elements«

The device shown in Figure 1 consists of a housing 2 made of any material, preferably a material that can be sterilized, such as plastic, glass, porcelain or metal. The housing 2 has a cover plate 4 with openings 6 into which a medical syringe 10 with a cannula 12 and cannula protective cap 14 can be inserted, whereby in the present case only one syringe is shown for the sake of clarity.

The container can have fastening means on one or more of its side surfaces, such as dovetail-shaped projections 5 or cutouts 5', in order to connect several housings to one another. Velcro fasteners or other detachable connecting elements can also be provided for the same purpose. Furthermore, part of the housing can also be provided with a compartment or tray-like recess 7 for storing other objects.

The housing is preferably a fully enclosed housing which can be opened or whose one or more wall surfaces are detachable so that the cannulas remaining in the housing after the cannula has been separated from the syringe can be removed from this housing together with their reattached protective cap.

Fields for marking patient names, room or bed numbers, or syringe contents can also be provided on the surface of the cover plate 4.

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As shown in Figure 2a, the syringe 10 with cannula 12 and cannula protective cap 14 is inserted into the opening 6, whereby the locking elements 16 located on the edge of this opening are elastically deformed into the interior of the housing and form a support surface for the neck flange 15 of the cannula protective cap 14 in the upper area. The syringe 10 is held in clamping engagement with the outside of the protective cap 14 by the locking elements made of a flexible or shape-elastic material in this approximately funnel-shaped recess.

In the illustration shown in Figure 2b, shortly before the syringe is used, the neck flange 15 of the needle protection cap 14 is pressed towards the inside of the housing by pressing it down, whereby the flange 15 is in a circumferential groove 18 on the inner edge of the locking element 16 engages. The inner diameter or the clear width of the groove 18 corresponds to the outer diameter of the neck flange 15, so that the cannula protection cap 14 is held securely in the locked position in this position and the syringe 10 with

Cannula 12 can be removed without the protective cap.

In the position shown in Figure 2c, the syringe 10 is pressed with the cannula 12 into the cannula protection cap 14 which is still in the opening after use, whereby the The edge bead or flange 15 of the cannula protective cap is pressed out of the circumferential groove 18 in the direction of the housing interior and the edge bead or flange 13 of the cannula 12 is pressed under the upper lip 20 delimiting the groove, which, when the syringe 10 is pulled up, closes the cannula 12 with the pressed-on cannula protective cap 14, so that both fall into the interior of the housing. After separation, the cannulas with their protective cap are located inside the housing, from where they can be safely removed through an opening or after

can be disposed of by opening the housing.

Instead of the ring-shaped locking element 16, which can be clamped into the opening of the cover plate as shown in Figure 3a, ring sections 26', as shown in Figure 3b, or several projections 26" arranged in a star shape, as shown in Figure 3c, can also be provided. In all these cases, the locking elements 26, 26* and 26" have a corresponding circumferential groove 28 or groove sections 28* and 28". Preferably, the lower lip 30 or 30' or 30" delimiting the groove has a diameter or inner distance which is slightly larger than that of the upper lip 20 or 20' or 20".

The locking elements consist of a deformable, elastic or spring-elastic material, such as rubber or plastic. In terms of manufacturing technology, the housing 2 can, for example, have a rigid cover plate 4 into which the locking element can be squeezed or clamped, for example by means of an external, circumferential annular groove 27 (Figure 3a). In the embodiment shown in Figure 3c, the cover plate consists of a rubber plate and tapered locking elements formed uniformly from this, whereby the elasticity of the shape or bendability of the tips inwards can be influenced by the shape or thickness of the material.

Instead of flexible plastic or rubber elements, the locking elements can also be made of one or more leaf spring-like metal strips, whereby the dimensions and elasticity are such that they can both hold the protective cap in the clamping engagement and, when the used syringe is removed, can still reach behind the edge bead or flange 13 of the cannula 12 on the side facing away from the cannula tip and can enable the cannula to be pulled off the syringe 10.

Claims (11)

'I: j Addresses 1. Device for releasing used disposable cannulas provided with an edge bead or flange at the rear end from the front end of a medical syringe with a housing, the cover plate of which has at least one opening with at least one locking element for engaging behind the cannula edge bead or flange on the side facing away from the cannula tip, characterized in that the at least one locking element (16) is elastically deformable into the interior of the housing when a protective cap (14) of the cannula (12) is inserted into the opening and is in adhesive or locking engagement with the outside of the protective cap (14) of the cannula (12) with its free end or edge regions. 2. Device according to claim 1, characterized in that the locking element (26) is ring-shaped) (Fig. 3a). 3. Device according to claim 1, characterized in that the locking element consists of one or more ring sections (26') (Fig. 3b). 4. Device according to claim 1, characterized in that the blocking element is formed from one projection (26") directed into the center of the opening (6) or from several projections (26") arranged in a star shape and ending at an acute angle (Fig. 3c). i I « I 4 · f « 5. Device according to claim 4, characterized in _that the locking element consists of a metal strip designed like a leaf spring. 6. Device according to one of claims 1 to 4, characterized in that the locking element consists of a flexible plastic and is connected in one piece to the cover plate (4) of the housing (2) or is fitted into the edge of the opening (6). 7. Device according to one of claims 1 to 4, characterized in that the region of the blocking element (16) extending into the center of the opening has a radially encircling joint (18) on the inner edge, the inner diameter of which in the rest position with the blocking element not deformed into the interior of the housing corresponds to the diameter of the neck flange (15) of the cannula protection flap (14). 8. Device according to claim 7, characterized in that only the upper limiting lip (20) of the joint (18) has a slightly smaller diameter than the cannula edge bead or flange (13). 9. Device according to one of claims 1 to 8, characterized in that the housing (2) is a box which is completely enclosed and can be opened, one or more wall surfaces of which are detachable. 10. Device according to one of claims 1 to 9, characterized in that connecting means (5, 5') for connecting several housings to one another are provided on the housing (2). 11. Device according to one of claims 1 to 10, characterized in that storage compartments or trays (7) are arranged on the housing (2). Il Il Il I IiMIIII Il 'll'! S! S 'S III III I <