CN1057234C - Disposable direct injection special ampule - Google Patents

Abstract

The present invention discloses a disposable special ampule for direct injection, which belongs to the inventions of an injector and an ampulla. A glue plug into which a needle can be inserted is arranged in an injection needle sheath. A screw hole of a piston in a syringe is screwed with an ampulla with a single chamber or dual chambers or a plurality of chamber whose number is more than 2. a tubular passage is formed between the top of the piston and the screw hole. When the disposable special ampule is for spare, the piston blocks the ampulla opening, and the ampulla wall or a partition plate blocks the tubular passage. When the disposable special ampule is used, the ampulla and a handle are anticlockwise rotated so that the ampulla and the syringe are communicated. After pumping and pulling operation, negative pressure sucks liquid medicine to the syringe to realize the subpackage storage of one kind of liquid medicine, or medicinal powder and liquid medicine, or many kinds of liquid medicines. When used, one kind of liquid medicine, or medicinal powder and liquid medicine, or many kinds of liquid medicines are dissolved or compounded and are pushed in the handle which is embedded in the handrail of the syringe to avoid repeated use or prevent children from playing the syringe after the syringe is lost.

Description

Disposable direct injection ampoule

The present invention relates to a kind of disposable direct injection ampoule, belong to the invention of syringe ampoule,

The domestic and international at present glass syringe that generally uses, the piston that mostly is the hollow tubular of airtight cooperation in the injection tube of being with nipple that injection needle can be installed is a pump.The syringe made of non-toxic plastic adopts the piston that connects pushing ram and handle is installed in the injection tube in recent years, injects human body after extracting medicinal liquid.

And contain the sealed glass ampoule Ampul of medicinal liquid or medicated powder, and must scratch or smash cervical region during use, the reuse syringe extracts medicinal liquid or injects solvent, draws the good medicinal liquid of dissolving again.These ampoules are easily broken, are unfavorable for keeping and transportation, and medicinal liquid is directly exposed to and easily causes pollution in the air during use.Glass fragment falls into medicinal liquid and injects health and be harmful to health when fractureing ampoule.Do one's utmost in the world in recent years to promote the use of a kind of curved neck easy breaking ampoule, but still fail fundamentally to solve the difficult problem that glass chip falls into medicinal liquid.The medical worker uses traditional method, complicated operation, and labor intensity is big, inefficiency.And glass syringe and disposable syringe often are repeated to use or the back child that scatters and disappears plays, and are harmful to health.

Chinese patent 90205143.1 discloses a kind of disposable direct injection ampoule, and piston is to help pull a cart and the eclipsed double-joint type structure of core tube, prepackage medicinal liquid in the injection tube, and in injection tube a rear end lobe of limiting, the rear end of a helping pull a cart internal lock of limiting, complex structure.Manufacture difficult the change greatly,, still need when meeting dissolving medicated powder by operated in accordance with conventional methods though can pre-install injection.

Chinese patent 90201384.X provides a kind of injection ampoule, is to adopt medical plastic ampoule body and injection needle two parts to fuse to form, and hands is pinched ampoule body and realized injecting liquid drug during use, but injection dosage is inaccurate.

Chinese patent 89201640.X has introduced a kind of " injection medicament container and instrument used for injection thereof " by the Taiwan application.The injection medicament container is the interior bottle of packing in outer blank, packing dry drug and dilute solution in the inside and outside bottle, and the two separates storage.Penetrate outer blank with syringe during use, draw the interior bottle that reinjects behind the diluent, treat, inject after extracting entry needle in the resorb syringe of dry drug dilution dissolving back.Realize that like this dilute liquid medicine and dry drug are blended in avoiding of finishing in the container and are exposed among the air.And above-mentioned instrument used for injection promptly is to have one can store the injection medicament container in push-pull bar inside, and establishes a lid in the push-pull bar tail end, prevents that its inner pressurd vessel from deviating from, and can be used as the point of application of push-pull bar.Be not exposed among the air though said vesse and instrument used for injection have solved medicament mixed, draw medicinal liquid but still need to be equipped with syringe in addition, operation inconvenience.

Chinese patent 91101123.4 discloses a kind of " a kind of method and apparatus that is used for mixing injection medicines " by Denmark's application, is used for mixing two compartment Kapps your liquid and medicine.This device is can insert a front end is used piston closes two compartment Kapps that with membrane closure, rear end shell at front end at one, one can be along the longitudinal movement and when Kapp when you insert, the piston rod that can be forced out by outer casing back, it moves forward with the back piston hybrid medicine of control card pul and liquid and injection mixture, when Kapp you by being contained in the shell front end when fix in the enclosure, the spiral retainer that has entry needle is used to puncture the diaphragm of Kapp that.

The disposable Syringe with medicine in it that compatibility used when the injection tube internal portioning layer that is presented in same syringe abroad contained several different medicinal liquids for injection, adopted and the vertical several pistons separately of injection tube major axis, injection tube is divided into several sections, the outside bulging passage of each underpiston barrel, but the piston centre bottom has the screw of spiral shell dress pushing ram.Hold out piston with pushing ram one by one during use, medicinal liquid mixes with anterior medicinal liquid through barrel passage flow direction front portion therebetween, advances last piston that medicinal liquid is injected human body thereafter.Though this syringe can be pre-installed several medicinal liquids, troublesome poeration has increased opportunities for contamination.

The objective of the invention is for provide a kind of with rubber piston seal the prepackage medicinal liquid ampoule be that piston is a pump, negative pressure after utilization is twitched is drawn to one or more medicinal liquids in the injection tube or medicinal liquid is drawn in the injection tube that contains medicated powder, realizes the disposable direct injection ampoule of injection purpose.Therefore, the present invention has any different in prior art.

The present invention is by following conceptual design.

Ampoule as thrust unit in the injection tube is flat mouthful of a cylindrical thin neck, in it single chamber or two-chamber or the multi-cavity more than 2, extension is the handle of diameter greater than the ampoule diameter at the bottom of the ampoule, the outer silk of ampoule mouth band, open on the piston of screw bottom in the injection tube, push up between screw by plug and to have tubular conduit, spiral shell dress ampoule mouth in the screw; The handrail outer of injection tube rear end is interior slightly backward receives, so that the ampoule handle is not appeared again after embedding, the glue that the interior setting of needle cap can be inserted needle point blocks up.

Disposable direct injection ampoule before using can be made the product that contains different pharmaceutical according to clinical needs, pre-installs solvent as pre-installing in the injection tube in medicated powder, the ampoule; Also can be made into single chamber, or two-chamber or 2 above multi-cavities are respectively pre-installed the injection that compatibility uses etc.

Counterclockwise backspin handle moves back ampoule after a while during use, and screw formation space makes piston not answer shutoff ampoule mouth under the piston, and ampoule wall is not stopped up the tubular conduit of piston yet, communicates with injection tube thereby make in the ampoule.Pull handle and ampoule make to form negative pressure in the injection tube backward, and ampoule inner liquid medicine nationality negative pressure space, tubular conduit under screw are attracted in the injection tube.If injection tube includes medicated powder and then it dissolving can be pulled out the needle cap on the entry needle, the stifled pin hole that no longer stops up of medicated cap hose lining, screw tight ampoule this moment more clockwise, blocks the tubular conduit of piston, driving handle, medicinal liquid to be injected can inject human body.Injecting back handle embeds in the injection tube handrail.

She Ji disposable direct injection ampoule is like this drawn or hybrid medicine is finished in device, is not exposed in the air.Realized that one or more compatibility of drugss use and the solvent appearance is separated medicated powder, and the problem of independent storage between the medicine, owing in the embedding of the handle after the using injection tube handrail, can avoid repeated use and lost back child to play.

Below in conjunction with drawings and Examples, the present invention is encyclopaedized.

Fig. 1 is the vertical profile front view of the present invention of single chamber ampoule.

Fig. 2 is the vertical profile front view of the present invention of double-chamber ampoule.

Fig. 3 is 3 chamber ampoule top views.

Fig. 4 is 4 chamber ampoule top views.

Disposable direct injection ampoule is the pintle of airtight suit entry needle 3 on the nipple that communicates with it 2 that injection tube 1 front end protrudes, and establishes the needle cap 5 of glue stifled 4 outside entry needle 3 in the suit, to prevent entry needle 3 pollutions and to avoid the gas leakage of needle point hole.Injection tube 1 rear end handrail 6 is interior slightly backward to be received, and can not appear again so that inject the ampoule handle 7 of back embedding.Rubber piston 8 in the injection tube 1 is with the tube inner wall sealing and can move up and down, piston 8 bottoms have screw 9, and push up between the screw 9 at plug and to have tubular conduit 10, spiral shell is adorned the flat mouthful ampoule of cylindrical thin neck in the screw 9, it in it ampoule 11 of single chamber or two-chamber or 2 above multi-cavities, the outer silk of ampoule mouth band: but ampoule mouth wall or dividing plate 13 shutoff tubular conduits 10,11 mouthfuls of piston energy shutoff ampoules, for strengthening the intensity of ampoule 11 cervical regions, silk is with down to being symmetrical arranged gripper shoe 12 between the ampoule body outside the ampoule mouth, and be connected as a single entity with ampoule, in order to avoid cervical region fractures.

With reference to being to be divided equally by the radial midfeather 13 parallel with major axis in Fig. 3,4,2 the above multi-cavity ampoules 11, double-chamber ampoule is then divided equally by central longitudinal dividing plate 13 '.And be opened on the ampoule mouth respectively.

The tubular conduit 10 of rubber piston 8 can be opened the center of circle partially, and the thicker wall cross section of flat mouthful of ampoule of nationality 11 is with its shutoff; Also but the center is open-minded for the tubular conduit 10 of rubber piston 8, the central shaft shutoff of nationality midfeather 13.Realize the airtight spiral shell dress of outer silk of ampoule mouth and piston screw with this, the airtight shutoff ampoule of the piston mouth that spiral shell is solid, ampoule mouth wall or midfeather 13 central shafts block tubular conduit.The outer is the handle 7 of diameter greater than ampoule at the bottom of the ampoule.

As make medicated powder 14 and solvent packing, and when using, make it the extraordinary ampoule of direct injection of mixed dissolution again, then molten medicated powder 14 is treated in prepackage in injection tube, pre-installs solvent in ampoule, adopts said method, supplies injection with preceding mixed dissolution.

The injection tube of She Ji direct injection ampoule, injection needle guard adopt medical plastic to make like this, and ampoule adopts glass or medical plastic to make.

Claims (5)

1. a disposable direct injection ampoule comprises that front end is the injection tube of nipple, rear end Armrest, and airtight Supramammillary entry needle, the needle cap of being sleeved on, and the piston of screw is opened in the bottom in the injection tube, it is characterized in that:

A. the ampoule in the injection tube is flat mouthful of a cylindrical thin neck, is single chamber or two-chamber or the multi-cavity more than 2 in it, and extension is the handle of diameter greater than the ampoule diameter at the bottom of the ampoule, the outer silk of ampoule mouth band;

B. open on the piston of screw the bottom in the injection tube, is pushed up between screw by plug and have tubular conduit, spiral shell dress ampoule mouth in the screw;

C. handrail outer in injection tube rear end is interior slightly backward receives, so that the ampoule handle is not appeared again after embedding;

D. in the needle cap setting can to insert the glue of needle point stifled.

2. ampoule according to claim 1 is characterized in that the multi-cavity more than 2 is to be divided equally by the radial dividing plate parallel with the ampoule major axis heart, and double-chamber ampoule is divided equally by the central longitudinal dividing plate, and is opened on the ampoule mouth respectively.

3. ampoule according to claim 1.It is characterized in that the outer screw socket of ampoule mouth is following exempts from gripper shoe that cervical region is fractureed to dividing equally between the ampoule body to be provided with, and makes it to fuse.

4. ampoule according to claim 1 is characterized in that the airtight spiral shell dress of outer silk of ampoule mouth and piston screw, the airtight shutoff ampoule of piston mouth, ampoule wall or dividing plate shutoff tubular conduit that spiral shell is solid.

5. extraordinary ampoule according to claim 1 is characterized in that under the counterclockwise backspin ampoule back piston that screw forms the space and makes between injection tube and ampoule and be communicated with through tubular conduit.

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