CN1977986B - Water powder medicine instant mixing type automatic injector - Google Patents

Abstract

An automatic injector for mixing the medicines in the form of pre-filled liquid powder features that a central axle (15) is fixed to the sleeve body (11) surrounding the solute bottle (10), the solvent bottle sleeve (2) surrounding the solvent bottle (3) is connected to the injector sleeve (19) via axle sleeve (17), and the central axle (15) is inserted in the axle sleeve (17). The solvent bottle coat and the injection device coat can be exchanged in position for automatic injection, the operation is very simple and fast, and the device is very suitable for fast injection of battlefield self-rescue and emergency rescue. The solute bottle can be used as powder injection or water injection, which enlarges the application range of the first-aid medicine and is a novel powder injection automatic injector.

Description

Water-powder medicine ready-to-mix auto-injector

technical field

The invention relates to a mixed type automatic injector for water powder medicine, which belongs to the field of medical injectors.

Background technique

In the past two or three years, the applicant has made significant improvements in the structure of the syringe to address the many shortcomings of the traditional injection procedure, and has applied for a number of domestic and foreign patents. In these patents, their structures have all reflected respective superiority and respective functions, but the injector that is used for rapid automatic injection in emergency is less, so the injector disclosed in these patents can't be applicable to such as The practical needs of self-rescue rapid injection in the field or emergency rapid injection in case of emergencies. In addition, among all the syringes, there has not been an automatic injector using powder injection, so the powder injection medicine with good curative effect cannot be used in large quantities for automatic injection of emergency rescue, so that the advantages of these medicines cannot be fully reflected. However, traditional syringes and injection operations are cumbersome and have many links, and are not suitable for emergency self-rescue injections.

Contents of the invention

The technical problem to be solved by the present invention is to provide a novel structural design and realize self-rapid injection of water powder medicine, that is, a mixed automatic injector, in order to overcome the deficiencies described in the prior art.

Technical solution of the present invention is:

A central shaft is fixedly connected to the casing surrounding the solute bottle, and the solvent bottle jacket surrounding the solvent bottle and the injection device jacket are connected by a shaft sleeve, and the central shaft penetrates into the shaft sleeve.

Further technical scheme of the present invention is:

The lower edge of the outer jacket of the solvent bottle and the limit pins in the lower edge of the outer outer jacket of the injection device alternately cooperate with the recesses on the upper edge of the sleeve body. The vertical centerlines of the solvent bottle jacket, the shaft sleeve, the central axis and the injection device jacket are all on the same plane.

The positive effects produced by the present invention are: in the technical field of syringes, the structural design of the powder injection automatic injector is firstly proposed, so that the powder injection medicine with good effect can also be used for automatic injection, and the expansion of solid injections such as powder injection and freeze-dried powder injection First aid use of the drug. Due to the novel design of the exchange position between the solvent bottle jacket and the injection device jacket, various medicines for different treatment purposes can be configured in it according to the needs, whether it is water injection or powder injection, which expands the scope of drug application and also It solves the technical problem that there is no powder injection automatic injector for a long time. The invention also has the characteristics of simple structure and repeated use, and is very suitable for self-automatic injection of field emergency rescue and other emergency rescue occasions equipped by troops.

Description of drawings

Figure 1: a schematic diagram of the overall structure of the present invention.

Figure 2: Bottom view of Figure 1.

Figure 3: Top view of Figure 1.

Figure 4: Schematic diagram of the structural state in which the conduction needle connects the solvent bottle to the solvent bottle.

Figure 5: Schematic diagram of the structural state after the solvent bottle jacket and the injection device jacket are transposed.

Figure 6: Bottom view of Figure 5.

Figure 7: Top view of Figure 5.

Figure 8: Schematic representation of the state of the structure upon injection.

Fig. 9: Schematic diagram of another embodiment of the present invention.

Figure 10: Top view of Figure 9.

Figure 11: Structural schematic diagram of another embodiment of the present invention

Figure 12: Top view of Figure 11.

Figure 13: B-B sectional view of Figure 11.

Detailed ways

Example 1:

As shown in Fig. 1, Fig. 2 and Fig. 3, the present invention is mainly composed of a solvent bottle overcoat 2, a cover body 11 connected with a central axis 15 and an injection device overcoat 19. Wherein, the solvent bottle jacket 2, the injection device jacket 19 and the shaft sleeve 17 are connected as a whole, and the central shaft 15 penetrates into the shaft sleeve 17.

Inside the solvent bottle overcoat 2, a cillin solvent bottle 3 with internal pressure is placed (it can also be a cassette bottle structure without internal pressure with a push rod), and the bottle mouth is provided with a rubber stopper 5 and a sliding frame 6, with The pointed conduction pin 7 is fixed on the sliding frame 6 . The upper end of the solvent bottle 3 is socketed with the push handle 1, and there is a spring 4 between the lower edge of the push handle 1 and the step in the solvent bottle overcoat 2 (also can adopt manual without spring). The lower edge of the solvent bottle jacket 2 is provided with a limiter 8 consisting of a spring and a sphere or a bayonet pin.

The injection device outer casing 19 connected with the solvent bottle outer casing 2 through the shaft sleeve 17 has a push rod 18 inside, and a pressing plate 20 is fixed on the pushing rod 18. The upper end of the pushing rod 18 is a pawl 23 structure with an opening in the middle, and the pressing plate 20 A spring 22 is arranged between the upper top of the injection device casing 19 . The ratchet 23 stretches out the top and blocks the push rod 18 and the pressing plate 20 outwards and will not move downwards due to the force of the spring 22 . A spring 24 is also arranged between the upper top of the solvent bottle jacket 19 and the injection button 25, and the inner sleeve of the injection button 25 and the slope of the ratchet 23 slide and cooperate with each other. A limiter 16 is also provided on the lower edge of the injection device casing 19 .

A cartridge solute bottle 10 with a sliding frame 12 and a needle 13 fixed at the mouth of the sleeve 11 is placed, the central axis 15 is integrated with the sleeve 11, and the sleeve 11 is connected with the solvent bottle jacket 2 and the injection device. Overcoat 19 is all concentric corresponding settings. A limit pit should be arranged on the upper edge of the sleeve body 11, and the stoppers 8, 16 installed on the lower edge of the solvent bottle jacket 2 and the lower edge of the injection device jacket 19 are alternately matched with this pit.

Referring to Fig. 4, the push handle 1 must be pressed down before the injection, and the solvent bottle 3 is pushed down by the push handle 1, and the conduction needle 7 pierces the rubber stopper 5 upwards and at the same time pierces the solute bottle 10 downwards. The piston 9 makes the solvent bottle 3 and the solute bottle 10 communicate with each other. Because the pressure in the solvent bottle 3 is pre-filled, the liquid solvent enters the solute bottle 10 through the conduction needle 7 to melt and mix the powder into a liquid medicine. Immediately let go after the medicinal liquid is mixed, push handle 1 is withdrawn together with solvent bottle 3 and conduction needle 7 by spring 4 force or manually, and conduction needle 7 lower ends break away from piston 9.

As shown in Fig. 5, Fig. 6, and Fig. 7, the solvent bottle overcoat 2 and the injection device overcoat 19 are rotated around the central axis 15 through the shaft sleeve 17 connected between the two, so that the injection device overcoat 19 is transferred to the sleeve body 11. The corresponding position (the solvent bottle 3 has turned to the original position of the injection device outer casing 19 at this time), and the position is realized by the cooperation of the stopper 16 and the recess on the upper edge of the sleeve body 11 .

As shown in Figure 8, when injecting, just remove the sheath 14 of the needle 13, press the injection button 25 downward, the inner sleeve of the injection button 25 pushes the slope of the ratchet 23 and the two ratchets 23 move inward and fall into the In the hole on the top of the injection device overcoat 19, at this moment, because the force of the spring 22 acts on the pressing plate 20, the push rod 18 solidly integrated with the pressing plate 20 is pushed downward to push the piston 9 in the solute bottle 10 to move. When the needle 13 is stuck into the human body, its reaction force can make the needle 13 upwardly pierce the rubber stopper of the solute bottle 10, thereby injecting the medicinal liquid into the human body from the needle 13, and completing the automatic injection of the whole emergency rescue.

Said solvent bottle 3 is pre-filled water for injection, and the solute bottle 10 can be pre-filled with powder injection, also can be pre-filled with water injection. In a word, various medicines for different rescue purposes can be configured as required.

Example 2:

As shown in Fig. 9 and Fig. 10, it is also possible to connect the semicircular bayonet 26 on the shaft sleeve 17 to snap the solvent bottle jacket 2 into the bayonet 26, and also connect the bayonet 27 on the central axis 15 to The sleeve body 11 is snapped in so that the medicine used can be replaced at any time.

Example 3:

As shown in Fig. 11, Fig. 12 and Fig. 13, a longitudinal semicircle flap 28 can also be established on the solvent bottle overcoat 2, and a longitudinal semicircle flap 29 is also established on the cover body 11 simultaneously, so that Directly replace the solvent bottle 3 and the solute bottle 10 at will, which is more convenient to use.

Claims (3)

1. water-powder medicine instant-mixed automatic syringe, it is characterized in that being enclosed on the outer body (11) of solute bottle (10) and be fixed with an axis (15), be connected by axle sleeve (17) between the solvent bottle overcoat (2) that surrounds solvent bottle (3) and the injection device overcoat (19), axis (15) penetrates in the axle sleeve (17), and the lower edge of solvent bottle overcoat (2) and injection device overcoat (19) replaces and the concentric corresponding coincidence in the upper edge of body (11) by axis (15).

2. water-powder medicine instant-mixed automatic syringe as claimed in claim 1 is characterized in that the spacer pin (8,16) in solvent bottle overcoat (2) lower edge and injection device overcoat (19) lower edge alternately cooperates with the pit of body (11) upper edge.

3. water-powder medicine instant-mixed automatic syringe as claimed in claim 1, the longitudinal centre line that it is characterized in that said solvent bottle overcoat (2), axle sleeve (17), axis (15) and injection device overcoat (19) all at grade.

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