DE1998520U - DEVICE FOR DOSING LIQUIDS ON ABSORBENT MATERIAL. - Google Patents

Description

P.A. 391167-6.7.

Device for dosing liquids at & aaugf Mfcdge | [Material

For testing microorganisms in routine diagnostics Metabolic performance (e.g. resistance or sensitivity determinations towards antibiotic substance, cleavage of Carbohydrates, alcohols, glycosides. Amino acids et al. organic substrates) one often uses aauftfäbigos material (mostly paper) as a substrate or reaction carrier. In order to be able to measure as many achievements as possible with one test, wuiucxi Teöekömbinationsn engegebss, in dsrsrt, asS sis sue | Paper, star-like punched out carrier (test accessory) to | the ends are soaked with the various substrates can. Such test combinations are for rational reasons in bundles of 25 to 50 individual test blanks with the material charged and then gi-dried.

The problem lies in the time-saving, quantitatively precisely dosed application of the quantities of liquid. The loading this test bundle is only available in the specialist literature with a scarce value nng # gaban. These manual methods are of little use a large-scale production suitable, such as. B. ZbI. Bakt. I., Orig., 1i6 £, 328, 1956, quoted: "The loading of the" toothed wheel " with chemotherapeutic substances is advantageously done in the form of closely spaced sets of 25 or 50 Piece after ... The application of the differently colored solutions of ... with the help of a pipette over 50 ends of a Gear railed so that ζ. B. 0.2 ml of a solution of ... phased out »" This method has a number of shortcomings. So is would be labor-intensive because each of the test cutters must be loaded with different solutions by steady hands. By applying the solutions manually, it is easy to that the ends of the individual test blanks fed unevenly that is not evened out by diffusion. Due to the large number of test takers and test £ J®jgQageii exists the ^ efabr of confusion and thus faulty productiona.

üa to switch off the mentioned MMsgel, -rarde developed a device, that this partially complies with the workflow, the amount of preparation is precisely dosed and time-saving:

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Automatic dosing syringes are used in a rack the amounts of test solution applied. By throwing the test blanks through the individual gear slots, the individual ends into the grooves, which are filled with preparation solution are, pressed and so evenly charged, the liquid being absorbed by the absorbent material.

The object of the innovation is thus a device (Fig. I) for the equivalent loading of gear-shaped paper test pieces. Vf oesteht of a combination of autoffiatiacheE-Doerler npsspritsen (11) with metering strip (12), a Zahnetunpe ic ') with FUhrungs rails (3), a cylinder-like container (Fig. VI) for receiving the Testguschnitte and a base plate (9). with brackets (10) on which the device rests.

In the figures a special embodiment of a DoBing devices for "eotzuechnitte" with round teacouples shown. In principle, all forms of test-to-board can be used.

Fig. I shows the tank rack on the base plate (9), Holders (10) for the automatic dosing syringes (11) with Doflierungsleiate (12), rack (2) with grooves (1), as well as rUhrupgeechienen (3) *

Fig * II shows a calibration on the rack (2) pit Guide rails (3). (1) «inö grooves in the rack (2)» ... The guide rails (3) limit the rack (2). the The number of hats (1) is expediently equal to the number of Ends of i «

Fig. III is a section of the rack (2) with the guide rails (3) through the groove (1). The guide rails (3) are firmly connected to the rack (2).

Fig. TV represents a “. .scbnitt in the plane Str Hut ^ {1} the rack (2).

Fig. V is a plan view of a test blank (7) bit den. «, Test cuts (5).

Fig. VI is a cross-section through the cylinder-like container for the test center (7). (4) aind slits 3n the Greetings the diameter of the ends (5) of the Teatzusohnitte (7). The chutes (4) are continuous. The see often he (Fig. VI) be = consists of two congruent parts, a deodorant and a bottom part, the parts being expediently worked so that they lend but not slide on one another fit. You can see every slot on the bottom and the Beokelteii (4) Tabs (6) The size and shape of the test umbilical a (S ^. As well as adjustments (13) for the Teatzusohnitte (7).

Fig. VII shows the cross section of the cylinder-like container from Fig. VI. The height of the walls (8) is so great that the Can accommodate test blank bundle well.

Fig. VIII shows a section through the container ^ Dept. VI) with the test cutouts (7). On the sides are the test cuttings (5) supported by tabs (6).

Fig. IX shows a top view of the dosage bar. (14) is a T-slot for inserting the automatic dosing syringe plunger. The dosing syringes (11) are thus variably connected to one another.

Fig. X is a cross section of Fig. IX with the T-slot (14).

Grooves (1) are made in the rack (2). These must have the same spacing and the same radius between the grooves (1), like the test cut ends (5). the Guide rails (3) on the outside of the SauBstsnge (2) are attached to the long sides and protrude beyond them. (Fig. III). Basically, the grooves (1) can be designed differently. They usually depend on the shape of the test cut (5). The ends (5) can be different from ScheB, 2. Β »^» α, jfsshwcSklf. pointed or € [usärstisah- If it around. It is, however, necessary to round off the edges of the grooves (1) somewhat.

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199852

The width of the rack (2) depends on the thickness of the bundle of paper to be impregnated or the thickness of the container (Fig. VI). The depth of the groove (1) according to the diameter of the test cut ends (5) »and the radius of the ends (5) should correspond to the depth» The height of the guide rails (3) is advantageously based on the diameter of the ten *, to-BChnittes (7). It should be at least as high as the badius of the test blank (7). that each enclose the Teotzuechnitte (7). The diameter act of the container {Fig. VI) is as large as the diameter of the test blanks (7). The tabs (6) have the "shape and size of the test to be cut (5). The ends (5) of the test blanks (7) protrude from the container (AbO ₁ VT) as far as the radius of the ends (5) is large .

All edges of the rack (2) and the guide are advantageous rails (3) rounded for easy insertion of the test precuts (7) in the container (Fig. VI).

The new device (Fig. I) may be made of any "aterial οά ^ τ Y / erk8toffkombinationen made advertise z. B. from Kunat-Btoff or metal or wood. According to a preferred embodiment, the rack (2) and guide rails (3) made of a transparent, clear, non-flexible plastic. However, if individual parts are exposed to special influences (e.g. sterilization, acid treatment, etc.), it is advantageous to hex them out of metal (e.g. V2A steel). 10) the usual laboratory stands are preferably used. Any commercially available make can be used as the automatic dosing syringe (11).

It is of course also possible to do this in some other way solidified into a bundle or a single test blanks (7) without the can fcJ ^ tSFIl «by the one filled with liquid Kuten (I) to roll and thus to soak.

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When using the device, the automatic Syringes (11) attached by a holder (10) so that the openings of the syringes (11) come exactly over the grooves (11) of the rack (2). The distance between the end of the syringe UDd guide rails (3) should preferably be larger than the diameter the test blanks (7). The syringe barrel and the rack (2) are secured against displacement in such a way that dat, entire device adjustments (13) on the base plate (9). The rack (2) with guide rails (3) are interchangeable, as are the Dosing syringes (11) are variable in number and arrangement. The dosing syringes (11) are connected by a connecting strip (12) so that a manual or mechanical pressure the set amount of liquid into the the groove (1) underneath is dripping. The device is then ready to dispense the test blanks.

The bundle of test blanks (7) is placed in the container (Fig. VI) packed and brought between the guide rails (3) of the device. The 3nds (5) of the test blanks (7) are rolled into the corresponding grooves (1) for sucking up the Amount of liquid conveyed.

Using the specified device, precisely dosed quantities of liquids or solutions can be applied to absorbent tea cut bundles to save time.

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. »98520

Claims (1)

_ ₆ _ PA391167-6.7.68 h Protection claims 1 »Device for dosing star-shaped bundles of absorbent Material consisting of a Zabrstab (2) provided with several corresponding grooves (1), which is passed through lateral Guide rails (3) is limited. 2. Apparatus according to claim 1, characterized in that it is exchangeable on a holder provided with appropriate devices base plate (9) rests. 3. Device according to claims 1 and 2, characterized in that • There was also a rollable between the guide rails (3) box-shaped container (Fig. VI) is present, which is suitable in its shape for receiving the star-shaped bundle and the ends (5) of the Teatster blanks (7) to be soaked releases. 4. Apparatus according to claim 3, characterized in that the dosenfSrmS ^ e container (Fig. VI) designed zylinderförraig and has top and bottom parts that can be slipped onto one another, the container walls (8) contain slots (4) which, in terms of number and size, are the same as the ends (5) of the bundles to be soaked, 5. Device according to Claim 3 or 4, characterized in that the eyelet-shaped container (Fig. VI) is provided with tabs (6), the shape of the ends (5) of the bundle to be impregnated same. 6. Apparatus according to claims _{3-5 t,} characterized in that the lid and bottom part of the can-shaped container (Fig. VI) contain devices on the inner surfaces (13) which lock the 2u soaking bundle in the desired position. 7 · Device according to claim 1-6, characterized in that it with brackets (10) extending from the base plate (9) and carrying automatic dosing syringes (11). β. Device according to claims 1-7, characterized in that the Dosage syringes (11) through a dosage bar (12) are interconnected. Q52 9. Apparatus according to claim 1 - 8, ^ adurcb characterized in that the Dosing syringes (Ή) can be moved to the holding bracket (10) brought and connected to the dosage bar (12).