CN201320332Y

CN201320332Y - Multi-chamber injector

Info

Publication number: CN201320332Y
Application number: CNU200920000074XU
Authority: CN
Inventors: 卢来春; 张蓉; 邢茂; 黄春基; 宋明宝; 黄林清; 曹健
Original assignee: Second Affiliated Hospital of TMMU
Current assignee: Third Military Medical University TMMU; Second Affiliated Hospital of TMMU
Priority date: 2009-01-05
Filing date: 2009-01-05
Publication date: 2009-10-07
Anticipated expiration: 2019-01-05

Abstract

The utility model relates to a miscible multi-chamber injector used for human body injection. The injector comprises a needle tube, an injection rod and a needle. A pharmaceutical chamber is arranged at the bottom part inside the needle tube and divided into a plurality of smaller chambers by separating plates in the axis direction. The upper end of the pharmaceutical chamber is in a sealed and flexible connection with a piston and the lower end of the pharmaceutical chamber is fixed and sealed by a bottom sealing. The injection rod is arranged at the upper part of the a needle cylinder; the front end of the injection rod is in contact with the upper surface of the piston; the lower end of the needle cylinder is provided with a medicine outlet which is provided with a seal-breaking device comprising an internal column and an external column; the external column is in sealed and flexible connection with the needle cylinder; the internal column is vacuum and screwed with the external column by external screw threads; the upper end of the internal column is provided with a serrated top edge; and the external column is sleeved by the needle. The proposal adopts a soft separating plate to separate a plurality of medicines which needs to be mixed, uses the seal-breaking device to cut the bottom end of the pharmaceutical column when in use, and then drive the injection rod for injection. The proposal is simple and easy. The fast mixing and injection can be conducted at the same time. In order to prevent the occurrence of accidentally pressing down the injection rod, the injection rod is in an inlay connection with a top cover. A groove at the middle of the piston can locate the injection rod thus the force on the piston can be evenly distributed and the leakage of medicine can be avoided. The proposal can save the use time in the battlefield to the maximum.

Description

Injection syringe with multi-cavity chamber

Technical field

This utility model relates to a kind of medical apparatus and instruments, specifically relates to the mixing of a kind of human injection of being used for, injection syringe with multi-cavity chamber

Background technology

In modernized war, the use probability maximum of chemical weapons, at present under the situation that some chemical weapons are poisoned, need several blended medicines to detoxify, but what adopt now is one bottle one bottle mixing, delayed the time like this, and wherein nerve toxicant is one of chemical warfare agent of known toxicity maximum, hazard boundary extensively, can cause a large amount of gas casualtys in extremely short time, untimely treatment then causes death very soon, according to very fast at nerve toxicant at present to the aged speed of target spot enzyme, about 2 minutes; The data record is also arranged, and the people can cause death in 1 minute after sucking the soman steam of several mouthfuls of high concentrations.Therefore, when chemical warfare takes place, need the soldier to finish in the extremely short time to save oneself and rescue mutually, the dosage form of its first aid counterpoison must be selected injection.Yan Zhi compound injection at first owing to can't solve the problem of stability, is that three or four syringes are injected successively basically, has so both caused poisoner's misery, more incured loss through delay the poisoning therapeutic time.Under high-intensity operation emergency rating, require the soldier to use many syringes such as atropine, oximes reactivator, anticonvulsant to inject successively and obviously can't satisfy the treatment needs, in order to fight for life with the Death, shorten therapeutic time as much as possible, and the difficult problem of solution compatibility of drugs stability, country of NATO takes the lead in carrying out the research of multicell syringe.Holland is the not enemy spray of development at first, interior dress 3.9ml medicament, be divided in its syringe three every, can be respectively charged into three kinds of medicaments that should not mix mutually, as atropine, obidoxime chloride and stabilize.The U.S. and country of most NATO are also in this dosage form of equipment at present.In addition, a kind of injection type that has stable tablet space is also equipped by states such as Britain, Holland, Belgium, Luxembourg, can be used to be respectively charged into liquid and tablet.But use multi-cavity chamber syringe to be mostly disposablely to use at present or chamber very little or volume is too big, the inconvenience of cause use, carrying, and the complex structure of a lot of syringes, process is used complicated, does not adapt to this special use occasion of battlefield.

Patent ZL200520052591.3 has introduced a kind of two-chamber prefilled syringe, its structure utilizes one to be divided into bilevel needle tubing, every layer has individual piston plate, and the diameter of two-layer syringe is unequal, and the upper strata syringe is moved the piston of shutoff lower floor syringe in the syringe of upper strata to during use greater than lower floor's syringe, utilize two-layer syringe diameter difference, behind the confection, it is downward to promote injection rod again, and medicament is released, though this mode has two chambers, reached blended purpose, but needed upwards pulling earlier before use, the syringe of this scheme is oversize, use and carry inconvenience, and adopt interim mixing required time long, effect is slow, can't tackle emergency.

The utility model content

For addressing the above problem, it is a kind of easy to use that this programme provides, can simultaneously various medicaments be injected the syringe of human body, concrete scheme is as follows: a kind of injection syringe with multi-cavity chamber, comprise needle tubing, injection rod, syringe needle, its improvement is, described needle tubing interior lower end has medicament chamber, described medicament chamber axially is separated into a plurality of chambers by dividing plate, described medicament chamber upper end is flexibly connected by piston seal, described medicament chamber lower end is by the underseal fixing seal, described injection rod is installed in syringe top, described injection rod front end contacts with piston upper surface, there is medicine outlet described syringe lower end, and described medicine outlet is equipped with brokenly seal apparatus, and described broken seal apparatus is by the lining, outer two cylinders are formed, described outside cylinder and syringe sealing flexibly connect, cylinder is hollow and is spun on outside cylinder by external screw thread in described, described in the cylinder upper end zigzag upper edge is arranged, described pinhead sleeve is on outside cylinder.

This programme one optimal way: described medicament chamber is for independently, and described medicament chamber outer surface is fluted, and described syringe inwall has tongue, and described groove engages with tongue, and the top cover of described syringe is for flexibly connecting, and described injection rod is inserted in the middle of the syringe top cover.

Another optimal way of this programme: be connected by annular tie rod between described injection rod and the syringe, described tie rod has indentation or contact point to be connected with injection rod with syringe top cover junction, and the described tie rod junction section of having is torn end.

This programme is an optimal way again: the circular hole side that described syringe top cover surface injection rod stretches out has a groove, and the projection of setting is arranged on described groove limit and near circular hole, described injection rod corresponding positions is equipped with the projection corresponding with groove.

The another optimal way of this programme: the circular groove of indent is arranged in the middle of the described piston, and described injection rod can insert in the circular groove.

This programme is an optimal way also: the circular groove of indent is arranged in the middle of the described piston, and described injection rod can insert in the circular groove.

This programme utilizes soft dividing plate to separate the blended medicament of several needs, utilize broken seal apparatus that the medicament cartridge bottom is cut during use, promote the injection rod injection again, simple and convenient, reached the purpose that one side rapid mixing is injected on one side, the top cover of syringe is made flexible connection, independent medicament cartridge can conveniently be installed, injection rod and top cover can adopt the form of tie rod to link together, wherein tie rod adopts indentation form or the connection of the form of contact point, when using to advance can draw back tie rod easily, prevented the unexpected situation of pressing injection rod, can more conveniently operate in the mode that adopts injection rod to engage with top cover, the piston intermediate groove can the locating injection bar, make even piston stress, avoid leakage of medicament, this programme can farthest reduce the service time on the battlefield.

Description of drawings

Fig. 1 syringe schematic perspective view

Fig. 2 syringe front view

Fig. 3 top cover groove sketch map

Fig. 4 breaks the seal apparatus sketch map

Fig. 5 tie rod sketch map

The specific embodiment

As Fig. 1, shown in 2, injection rod 2 is installed on needle tubing 1 top, syringe needle 8 is equipped with needle tubing 1 lower end, the bottom is for holding agent chamber 3 in the needle tubing, it is divided into independent several cavity volumes by dividing plate 4 along the parallel mode of needle tubing axis, hold 3 upper ends, agent chamber by piston 5 sealings, lower end underseal sealing, underseal adopts and dividing plate 4 same materials, dividing plate 4 is made by the flexible material of mineral-type, and the medicament that needs is encapsulated in the different cavity volumes of syringe 1 in advance, and then syringe top cover 14 is installed, be inserted with injection rod 2 in the middle of the top cover 14, the groove 13 that in the middle of piston 5 upper surfaces, has a size and injection rod 2 front ends to adapt to, after top cover 14 was built, injection rod 2 inserted groove 13, top cover 14 can utilize engage thread to be connected with syringe 1, and the underseal that holds 3 bottom surfaces, agent chamber contacts with the medicine outlet hole of syringe.As shown in Figure 3, on the intermediary hole of top cover limit a groove 11 is arranged, a projection 12 is arranged on injection rod 2, projection 12 positions are positioned at injection rod and insert piston upper groove top cover 14 upper end positions, projection 12 is stuck on the top cover 14 at ordinary times, have only 11 pairs of projection 12 and top cover grooves seasonable, it is descending just can to promote injection rod, this mode can prevent that injection rod 2 from being pressed by accident, the fixing correspondence position of projection 12 and groove 11 for convenience, side at groove 11 has a block 10 near the intermediate throughholes place, when injection rod 2 positive directions are rotated, block 10 blocks projection 12, thereby projection 12 just in time slides from groove 11, if to opposite spin, projection 12 is just blocked by the another side of block 10, projection is located in this position at ordinary times, as shown in Figure 4, medicine outlet at syringe 1 is installed a broken seal apparatus, broken seal apparatus is made up of inside and outside two cylinders, between two cylinders by being threaded, outside cylinder 6 adopts movable sealing to be connected with syringe 1, when rotation outside cylinder 6, interior cylinder 7 is by trend syringe internal rotation, and there is jagged upper edge 16 interior cylinder 7 upper ends, it is in the process of precession, sawtooth is cut the underseal of syringe, and interior cylinder 7 is hollow structures and can not breaks away from outside cylinder 6 that syringe needle 8 is enclosed within on the outside cylinder 6.

As shown in Figure 5, the fixed form of injection rod 2 and top cover 14 can also adopt the form of tie rod 17, an annular tie rod 17 is installed between injection rod 2 and top cover 14, tie rod 17 and injection rod 2 and top cover 14 be connected the mode that adopts contact point 18 or line of weakness, surplusly in the junction of tie rod 17 self go out one section, as tearing end 19, tear end 19 with pulling in use, along circumferentially pulling at and tie rod 17 can be pulled fully, and then press injection rod 2 and get final product, when connecting, tie rod 17 can prevent that injection rod 2 from being pressed by accident.

In use, at first rotate outside cylinder 6, cylinder 7 is cut underseal in making, and the rotary injection bar 2 then, injection rod upper protruding block 12 is fallen from top cover 14 grooves 11, because underseal cut, syringe holds 3 inside, agent chamber has not had pressure, and injection rod 2 promotes piston 5 medicament is released from medicine outlet, dividing plate 4 adopts flexible material to make, in piston 5 propulsive processes, dividing plate 4 always to pressing down, and finally is compressed the bottom that holds agent chamber 3 by piston 5.

This programme can also adopt agent chamber 3 and the syringe 1 isolating mode held, it is identical with such scheme to hold agent chamber 3 structures, opening top cover 14 during use will hold agent chamber 3 and put into, top cover 14 again closes, top cover 14 can adopt fastening with appearance agent chamber 3 or be threaded, injection rod 2 is inserted in the groove 13 of piston 5 upper surfaces, for prevent that holding agent chamber 3 rotates in needle tubing 1, at needle tubing 1 inner surface two fins are set, at the outer surface that holds agent chamber 3 two corresponding groove are set, to hold the agent chamber when putting into needle tubing, and be about to groove and fin to good, holding the agent chamber like this in operating process can passive rotation.

Claims

1, a kind of injection syringe with multi-cavity chamber, comprise needle tubing (1), injection rod (2), syringe needle (8), it is characterized in that, described needle tubing (1) interior lower end has medicament chamber (3), described medicament chamber axially is separated into a plurality of chambers by dividing plate (4), described medicament chamber (3) upper end is flexibly connected by piston (5) sealing, described medicament chamber (3) lower end is by the underseal fixing seal, described injection rod (2) is installed in syringe (1) top, described injection rod front end contacts with piston (5) upper surface, there is medicine outlet described syringe (1) lower end, described medicine outlet is equipped with brokenly seal apparatus, described broken seal apparatus is by the lining, outer two cylinders are formed, described outside cylinder (6) flexibly connects with syringe (1) sealing, cylinder in described (7) is for hollow and be spun on outside cylinder (6) by external screw thread, zigzag upper edge (16) arranged on the cylinder (7) in described, and described syringe needle (8) is enclosed within on the outside cylinder (6).

2, a kind of injection syringe with multi-cavity chamber as claimed in claim 1, it is characterized in that, described medicament chamber (3) is for independently, described medicament chamber outer surface is fluted, described syringe (1) inwall has tongue, described groove engages with tongue, and the top cover (14) of described syringe (1) is for flexibly connecting, and described injection rod (2) is inserted in the middle of the syringe top cover (14).

3, a kind of injection syringe with multi-cavity chamber as claimed in claim 1 or 2, it is characterized in that, be connected by annular tie rod (17) between described injection rod (2) and the syringe (1), described tie rod (17) has indentation or contact point (18) to be connected with injection rod (2) and syringe top cover (14) junction, and the described tie rod junction section of having is torn end (19).

4, a kind of injection syringe with multi-cavity chamber as claimed in claim 1 or 2, it is characterized in that, the circular hole side that the surperficial injection rod of described syringe top cover (14) (2) stretches out has a groove (11), the projection of setting (10) is arranged on described groove (11) limit and near circular hole, described injection rod (2) corresponding positions is equipped with the projection corresponding with groove (12).

5, a kind of injection syringe with multi-cavity chamber as claimed in claim 3 is characterized in that, the circular groove (13) of indent is arranged in the middle of the described piston (5), and described injection rod (2) can insert in the circular groove (13).

6, a kind of injection syringe with multi-cavity chamber as claimed in claim 4 is characterized in that, the circular groove (13) of indent is arranged in the middle of the described piston (5), and described injection rod (2) can insert in the circular groove (13).