DE29513214U1 - Dosing and automatic injection system - Google Patents

Description

Franz - Heinz Adamaszek, 701^2 Sjuqgart, Klüpfelsteaße 2 ., _t< Dosing and automatic injection system

Various injections, which are carried out by patients themselves or with help, should be able to be carried out as quickly, painlessly and easily as possible on the whole body. In order to achieve this, the use of this dosing device serves to take the dosing liquid from ampoules and then automatically insert the cannula and inject the dose using a one-handed, one-handed button. A planned overstroke when the dose is raised guarantees that a cylinder is filled without air being trapped. Another side advantage is that the use of this device excludes the use as an injection device for drugs.

Figure 1: Basic setting for cylinder flushing and dosing setting

Pos. la. Position of the switching arms

Figure 2: Raising the set dosage amount including overstroke, locking the nut and tensioning the injection spring.

Pos. 2a Position of the switching arms

Figure 3: Situation after tensioning the injection spring and retracting the cannula

Pos. 3a Position of the switching arms before triggering the

automatic shot and injection

Figure 3a: Situation after triggering the automatic injection and injection of the dosage amount

Pos. 3b Intermediate position of the shift arms in canoe

lens shot

Pos. 3 c End station of the switching arms when unlocking

of the mother including injection of the dosing liquid

Figure 1 shows the initial position of the system. In an outer sleeve (3) with slots (3a,3b,3c) for a release lever (13) with locking button (13b), push button (13a) and switching lug (14), which can be moved under spring pressure (11) via slide (10) (B).

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Franz - Heinz Adamaszek, 70J92.Stu5fgart, _# Slüpfelstrasse 2.. , , . .

By turning the head (1) with scale (2), the nut (6) can be set to the desired dosage (G) via spindle (5); the nut (6) is moved in a guide (4) and rests against the pre-tensioned injection spring (12) in the guide (4), which is connected to the injection spring (7) in the outer sleeve (3). The locking lever (8) is held in the guide (4) via the switching nose (14), which can be rotated under pressure from the leaf spring (9); the switching arms (14a) of the switching nose (14) rest against 2 cams (3d) inside the outer sleeve (3) under pre-tension pressure. In this situation: guide (4) held in the outer sleeve (3). By means of the release lever (13) using the locking button (13b) in the slot (3a) and the locking lever (8), held by the switching lug (14), the head (1), with scale (2) connected to the spindle (5) can be moved back and forth as per (A) in order to remove any disinfectant or injection quantities contained in the cylinder or cannula and the desired dosage quantity can be set as per (G) by turning the head (1) using the spindle (5) and nut (6).

Pos la. shows the position of the switching nose (14) with its switching arms (14a) in relation to the cam (3d); switching curve (4a) as a fixed part of the guide (4):After cleaning the cylinder/cannula (A) and setting (G) the dosing quantity, the locking lever (8) is released by actuating (B) the switching nose (14) using the slide (10). When the head (I) ₅ , connected to the spindle (5) and carrying the nut (6), is pulled, the lever locks into the guide (4) under pressure from the leaf spring (9); at the same time the injection spring (12) is tensioned. In order to remove any air bubbles that may still be present in the cylinder, an excess stroke has been taken up between the nut (6) and the guide (4). By actuating (B), the switching arms (14a) are supported under the cam (3d) as shown in Pos 2a.

By pressing (D) the push button (13a) of the release lever (13), the fixation of the guide (4) in the outer sleeve (3) can now be released, by pulling out (E) the head (1) of the guide (4) from the outer sleeve (3) until the locking button (13b) snaps into the slot (3b) under pressure from the now tensioned insertion spring (7). The release lever (13) is pre-tensioned due to manufacturing, held by the guide (4) against the outer sleeve (3). By pulling on the head (1), the guide (4) is brought upwards out of the outer sleeve (3) according to (E); at the same time, position 3a, the switching curves (4a) of the guide (4) release the locking of the switching arms (14a) under cams (3d) and bring the switching nose (14) into the upper position, tensioning the insertion spring (7).

By pressing the push button (13a) of the release lever (13), the lock is released using the locking button (13b) in the outer sleeve (3), so that under the pressure of the tensioned injection spring (7), the guide (4) is moved back in the direction of the outer sleeve (3) according to (F) with head (1) etc. and the locking lever (8) releases the locking of the nut (6) with the help of the switching nose (14) and the injection of the preset dosage amount can take place by relaxing the injection spring (12). Pos. 3a shows the position of the switching arms (14a) when the injection spring (12) is tensioned during process (E); while Pos. 3b and Pos. 3c show this during movement (F) up to Figure 3a.

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Claims (12)

Franz - Heinz Adamaszek, 70192^tuttgart, Kltofelstraße 2 Protection claims 1. Dosing and automatic injection system characterized in that when a guide (4) is fixed by a release lever (13) using a locking button (13b) and the locking lever (8) by a switching nose (14), the spindle (5), as a carrier of the piston in the cylinder with cannula, can be moved back and forth with the nut (6) by operating the head (1) in order to remove residual media, etc. from the cylinder and the cannula and by turning the head (1) so that the nut (6) moves on the spindle (5), the desired media dose can be set (Figure 1, A, G) 2. Dosing and automatic injection system characterized in that by moving the switching nose (14) by means of a slide (10) against the spring (11), the fixation of the locking lever (8) is released and at the same time the two switching arms (14a) of the switching nose (14) are supported on two cams (3d) of the outer sleeve (3) so that the medium is sucked from the ampoule into the cylinder by pulling on the head (1) until the locking lever (8) engages behind the raised nut (6) under the pressure of the leaf spring (9) and the injection spring (12) is tensioned. (Figure 2, B, C) 3. Dosing and automatic injection system characterized in that after the medium has been drawn in, any air bubbles present in the cylinder are removed by moving the head (1) up and down during the overstroke so that the exact dose amount is present in the cylinder. (Figure 1, A) 4. Dosing and automatic injection system characterized in that the head (1) has a scale (2) with which, opposite a marking on the outer sleeve (3), the desired dose amount is preset and after changing the 1st medium ampoule for the 2nd medium ampoule, the 2nd medium dose is drawn into the cylinder and mixed with the 1st dose by further turning the head (1) with scale (2). (Figure 1, G, A) 5. Dosing and automatic injection system characterized in that by pressing the push button (13a) of the release lever (13), the fixation of the guide (4) is changed via the locking button (13b) in the slot (3a) of the outer sleeve (3) by pulling on the head (1) to the slot (3b), the insertion spring (7) is tensioned and the switching nose (14) with its switching arms (14a), supported on cams (3d) via switching curves (4a) of the guide (4), is lifted and brought into the release position of the locking of the nut (6) with the locking lever (8). (Figure 3, E, D) -3- Franz - Heinz Adamaszek, 70192 Stuttgart, Kltofelstrasse 2 6. Dosing and automatic injection system characterized in that by pressing the push button (13a) the upper fixation of the guide (4) in the slot (3b) is released by the locking button (13b), the guide (4) slides under pressure from the insertion spring (7) into the interior of the outer sleeve (3) and the locking lever (8) slides into the switching nose (14), thereby releasing the locking of the locking lever (8) with the nut (6) and thus causing the locking of the guide (4) in the slot (3a) of the outer sleeve (3) by means of the locking button (13b) while relaxing the injection spring (12). (Figure 3, 3a, A, F) 7. Dosing and automatic injection system characterized in that the locking lever (8) is mounted rotatably in the guide (4) under a pre-tensioned leaf spring (9) and the release lever (13) is firmly connected to the guide (4), while the switching curves (4a) are a fixed component of the guide (4). 8. Dosing and automatic injection system characterized in that the leaf spring (9) as an injection part is firmly connected to the locking lever (8) and is held and supported by a guide (4), 9. Dosing and automatic injection system characterized in that the switching nose (14) connected to the slide (10) has two switching arms (14a) which are supported on two cams (3d) as parts of the outer sleeve (3). (Pos. la, 2a) 10. Dosing and automatic injection system characterized in that according to claim 9 the switching arms (14a) are positioned by means of switching curves (4a), which are parts of the guide (4), during the functional sequence (pos. 3a - 3c). 11.Dosing and automatic injection system characterized in that the release lever (13) with push button (13a) and locking button (13b) is spring-connected to the guide (4) and acts as a functional means in slots (3a) and (3b) of the outer sleeve (3) and at the same time covers the slots from the inside. 12.Dosing and automatic injection system characterized in that the slide (10) with switching nose (14) is held and fixed in the slide (10) by means of a dovetail push-in connection and with a spring tongue. -4-