CN201200683Y - Powder injection sterilized injection syringe for mixing and pre-encapsulating medicament - Google Patents

Abstract

The utility model provides a powder asepsis medicine mixing prefilled syringe, which comprises a solute bottle (13) and a solvent bottle (3), which are communicated by a communicating needle (11). The syringe is characterized in that a protrusion (18) on an end cap (2) is embedded in a vertical groove (17) of a plunger (1). A protrusion (20) on a clamping cap (7) is embedded in a vertical groove (5) in a middle sleeve (6). The vertical grooves (5, 17) are communicated with horizontal grooves (19, 23) thereof at right angle, respectively. The two horizontal grooves ( 19, 23), which are opposite, are provided with protrusions (21,22) inside, respectively. With the structure of vertical grooves and horizontal grooves on the plunger and the middle sleeve, the syringe has simplified medicine mixing and injection process, reliable use and convenient operation, and is particularly suitable for common injection as well emergency self-injection.

Description

Injectable powder aseptic chemical mixing pre-encapsulated injector

Technical field

This utility model relates to a kind of injector for medical purpose, the injectable powder aseptic chemical mixing pre-encapsulated injector of using when particularly can be used for emergency injection.

Background technology

To extract solvent (being water for injection) out with syringe earlier in traditional injection manipulation, again syringe needle is penetrated solute bottle (injectable powder or aqueous injection), release solvent then and mix with solute and dissolve, extract admixing medical solutions at last again out and in syringe, could inject or give dosing in the infusion bottle human body.This operational approach is the program complexity not only, and nurse's amount of labour is big, and medicinal liquid will pollute easily through shifting several times.The most important thing is the easy generation that malpractice occurs causing, until the life security that jeopardizes the patient because of wrong medicine.In order to overcome the above problems, the applicant once applied for a patent, be before syringe dispatches from the factory, just in advance solvent and solute according to dosage to be potted in respectively in solvent bottle and the solute bottle, and solvent bottle and solute bottle be put in the syringe jointly, the two realizes that by intermediary conducting pin mutual conducting enters in the solute bottle solvent and mixes medicine under external force, just implements injection then.This version has prevented that to greatest extent the phenomenon of wrong medicine from taking place, and the also corresponding injection operation link that reduced has avoided medicinal liquid to shift and pollution, conscientiously conventional syringe has been carried out bigger structure innovation.But this syringe thinks that still some is loaded down with trivial details on the structure of itself and in actual the use, the reliability of use does not also reach optimal degree.

Summary of the invention

The technical problems to be solved in the utility model is exactly for overcoming the deficiency described in the background technology, provide a kind of structure more reasonable, more convenient to operate, use injectable powder aseptic chemical mixing pre-encapsulated injector more reliably.

The technical solution that realizes above-mentioned purpose is:

Projection on the end cap embeds in the vertical channel of push rod, and during the projection on the card medicated cap embeds in the vertical channel of cover, two vertical channel at right angles are communicated with separately level trough respectively.

Its further technological improvement is:

Be respectively equipped with spacing preiection in two level troughs, the direction of two level troughs is opposite.

This utility model mainly is structurally to have carried out rational innovation, on the basis of pre-encapsulated injector, utilize push rod with in the motion of the relative projection of the vertical channel, the level trough that put, make the injection operation program more simple, reduced injection operation link and nurse's workload, the phenomenon of more difficult generation wrong medicine, avoided medicinal liquid to shift and pollution, be fit to very much normal injection and use with urgent self-injection.

Description of drawings:

Fig. 1: overall structure sketch map of the present utility model.

The axonometric chart of Fig. 2: Fig. 1.

The side view of Fig. 3: Fig. 2.

Fig. 4: the structural representation of middle cover.

The vertical view of Fig. 5: Fig. 4.

Fig. 6: the structural representation of card medicated cap.

Fig. 7: the structural representation of push rod.

Fig. 8: the structural representation of end cap.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3, this syringe mainly is by push rod 1, middle cover 6, be arranged in cover 6 solvent bottle 3, block medicated cap 7, trap 8, conducting pin 11, solute bottle 13, syringe needle 16 constitute.Wherein, it vertically is provided with a vertical channel 17 (referring to Fig. 7) that at right angles is connected with level trough 23 in push rod 1 upper edge, spin with middle cover 6 or the end cap 2 of clamping on projection 18 embed in the vertical channel 17 of push rods 1, and, on level trough 23, also have a spacing preiection 22 and cooperate with the projection 18 of end cap 2 (referring to Fig. 8) along doing relative motion (referring to Fig. 2) in vertical channel 17 and the level trough 23.Trap that 8 upper ends spin or clamping one card medicated cap 7, the internal circular surfaces of card medicated cap 7 also is provided with a projection 20 (referring to Fig. 6), and middle cover 6 stretches into traps in 8 and be slidingly matched with card medicated cap 7.On the cylindrical of middle cover 6, also has a vertical channel 5 (referring to Fig. 4, Fig. 5) that at right angles is communicated with level trough 19, block in the vertical channel 5 of cover 6 in projection 20 embeddings on the medicated cap 7, and along doing relative motion (referring to Fig. 3) in level trough 19 and the vertical channel 5, the projection 20 of card medicated cap 7 matches with spacing preiection 21 in the level trough 19 again.The direction of said level trough 19,23 is opposite.Outside solvent bottle 3, also be with a spring 4.Two vertical channel 5,17 at right angles are communicated with separately level trough 19,23 respectively.

This syringe before dispatching from the factory by special equipment and technology in solvent bottle 3 and solute bottle 13 just respectively embedding according to dosage solvent and solute (injectable powder or aqueous injection) are arranged, and in solvent bottle 3, be filled with Compressed Gas in advance.When needing injection, be positioned under the situation of level trough 19, to lower compression push rod 1, solvent bottle 3 moved downward, simultaneously pressuring spring 4 in the vertical channel 17 of the 18 aligning push rods 1 of the projection on the end cap 2 and the projection 20 on the card medicated cap 7.At this moment, the slippage frame 10 (playing fixedly conducting pin 11 simultaneously) that is socketed in solvent bottle 3 ports relatively upwards slides for 3 mouthfuls along the solvent bottle, make conducting pin 11 pierce through the plug 9 of solvent bottle 3, conducting pin 11 pierces through the piston 12 of solute bottle 13 again simultaneously downwards, solvent can the pressure effect in bottle under in conducting pin 11 enters solute bottle 13 automatically and the powder solute is dissolved or mix with the water preparation solute, realize the automatic medicine-mixing purpose.

As long as unclamp push rod 1 after mixed medicine is finished, under the effect of spring 4 resiliences, drive push rod 1, solvent bottle 3, slippage frame 10 and conducting pin 11 and together move upward, and the lower end of conducting pin 11 and piston 12 are broken away from, reach withdraw of the needle purpose.

Rotating push-rod 1 again, makes the projection 18 of end cap 2 enter level trough 23 and cooperate with the spacing preiection 22 of level trough 23 to push against.Overlap 6 in rotating then, make the vertical channel 5 of cover in projection 20 alignings on the card medicated cap 7, take out the plug that protects needle guard and syringe needle 16 is thrust human body or infusion bottle this moment.Owing in the process of thrusting, be subjected to counteracting force, the slippage frame 15 of solute bottle 13 ports will move upward, and make syringe needle 16 pierce through plug 14, at this moment promote push rod 1 again and medicinal liquid can be injected into human body or infusion bottle by syringe needle 16, thereby finish whole injection process together with middle cover 6 compressing pistons 12.

Another embodiment of this syringe is not use spring 4, and only with hand pulling push rod 1 or middle cover 6 just can realize that conducting pin 11 and piston 12 break away from after mixed medicine process is finished.

Claims (3)

1, a kind of injectable powder aseptic chemical mixing pre-encapsulated injector, it has a solute bottle (13) and a solvent bottle (3), realizes conducting by conducting pin (11) between the two, it is characterized in that the projection (18) on the end cap (2) embeds in the vertical channel (17) of push rod (1); During projection (20) on card medicated cap (7) embeds in the vertical channel (5) of cover (6), two vertical channel (5,17) at right angles are communicated with separately level trough (19,23) respectively.

2, injectable powder aseptic chemical mixing pre-encapsulated injector as claimed in claim 1 is characterized in that being respectively equipped with spacing preiection (21,22) in two level troughs (19,23).

3, injectable powder aseptic chemical mixing pre-encapsulated injector as claimed in claim 1 or 2 is characterized in that the direction of two level troughs (19,23) is opposite.

Images