CN2695003Y - Pneumatic automatic injector - Google Patents
Pneumatic automatic injector Download PDFInfo
- Publication number
- CN2695003Y CN2695003Y CN 200320113147 CN200320113147U CN2695003Y CN 2695003 Y CN2695003 Y CN 2695003Y CN 200320113147 CN200320113147 CN 200320113147 CN 200320113147 U CN200320113147 U CN 200320113147U CN 2695003 Y CN2695003 Y CN 2695003Y
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- CN
- China
- Prior art keywords
- needle
- needle tube
- piston
- tube
- tubing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to an injector, in particular to a pneumatic automatic injector which comprises an inner needle tube, an outer needle tube, a needle seat and a control switch. A piston and a piston rod is arranged in the outer needle tube, the front end of the inner needle tube is connected with the needle seat, and the control switch is arranged on the needle seat. The inner needle tube is sheathed and embedded in the outer needle tube though a round sealing ring, the upper end of the piston rod and the bottom of the outer needle tube are fixedly connected in a sealing way, the lower end of the piston rod is connected with the inner piston of the inner needle tube, and the upper part of the piston of the inner needle tube can be communicated or not be communicated with the outer needle tube. The utility model which can be widely use in the medical and sanitary field has low cost, easy manufacture, easy use and short injection time; moreover, the pain of the patient can be obviously relieved.
Description
One, technical field: this utility model relates to a kind of syringe, particularly relates to a kind of vapour-pressure type automatic injector.
Two, background technology: the cartridge syringe that present medical institutions or individual generally use, great majority are hand propelled syringes, after syringe needle is penetrated the injection site.Armrest promotes the injection rod piston medicinal liquid is injected human body, manipulate inconvenience, speed is wayward, inject time is long, and any action of medical personnel's body and hands portion all can make syringe needle shake or loosening, increases the weight of patient's pain, having very, the person can make syringe needle depart from selected injection site, increase the weight of the patient suffering, cause a lot of people especially the child fear the injection for curing of having an injection, increase the weight of patients ' psychological burden.In order to reduce patient suffering and easy to use, people have developed multiple medical automatic injector, and vapour-pressure type is arranged, spring or the like.But because a variety of causes, automatic injector is difficult to popularize always.A kind of vapour-pressure type automatic injector of proposing of patent documentation ZL94243353X for example, form by last, inner needle tube, in the outer needle tubing piston rod is housed, there is a piston that matches with outer needle tubing piston rod upper end, constitute delivery air chamber with outer needle tubing top, the deficiency of its existence is: needle outlet and disinfection pad are equipped with in the bottom, and syringe needle is built-in, and syringe needle is difficult to find accurately the injection site; It is equipped with medicine bottle of the inverted no end in inner needle tube must be special, and this is difficult to find in the market.ZL98236282X relates to a kind of disposable use vapour-pressure type automatic injector, comprise needle cylindrical unit, needle holder, syringe is installed piston in the chamber, hand-operated valve links to each other and the syringe chamber is a vacuum between needle holder or the syringe chamber, is filled with pressure in the pressure tank, and is easy to use, but both needed pressurising evacuation again in the processing, made troubles to processing and implementation.
Three, utility model content:
Shortcoming and defect at background technology exists the utility model proposes a kind of vapour-pressure type automatic injector easy to use simple in structure.
The technical scheme that this utility model adopted:
A kind of vapour-pressure type automatic injector, contain inner needle tube, outer needle tubing, needle holder and gauge tap are equipped with piston and piston rod in the outer needle tubing, the inner needle tube front end connects needle holder, needle holder is provided with the adjusting stopcock, and inner needle tube embeds outer needle tubing by the O-ring seal suit, and the piston rod upper end is sealedly and fixedly connected with outer needle tubing bottom surface, piston-rod lower end is connected with the inner needle tube inner carrier, and inner needle tube piston upper cavity is communicated with outer needle tubing upper cavity.
Described vapour-pressure type automatic injector, outer, inner needle tube top is provided with boss or groove, and suit O-ring seal in it is dynamically connected with outer needle tubing sealed sliding, and needle holder adjusted stopcock is a ball valve, or is needle valve, needle holder front end setting-in syringe needle.
Described vapour-pressure type automatic injector, needle holder adjusted stopcock can be the rod-pulling type cylindricality switch that is provided with two or three flow through holes, but needle holder front end setting-in syringe needle.
Described vapour-pressure type automatic injector, inner needle tube body front portion is provided with the fillet of ear ring.
A kind of vapour-pressure type automatic injector, contain inner needle tube, outer needle tubing, needle holder and gauge tap are equipped with piston and piston rod in the outer needle tubing, the inner needle tube front end connects needle holder, needle holder is provided with the adjusting stopcock, and inner needle tube embeds outer needle tubing by the O-ring seal suit, and the piston rod upper end is sealedly and fixedly connected with outer needle tubing bottom surface, piston-rod lower end is connected with the inner needle tube inner carrier, and inner needle tube piston upper cavity is not communicated with outer needle tubing upper cavity.
Aforesaid vapour-pressure type automatic injector, outer, inner needle tube top is provided with boss or groove, and suit O-ring seal in it is dynamically connected with outer needle tubing sealed sliding.
Described vapour-pressure type automatic injector, needle holder adjusted stopcock is a ball valve, or is needle valve, needle holder front end setting-in syringe needle.
Needle holder adjusted stopcock or for being provided with the rod-pulling type cylindricality switch of two or three flow through holes, needle holder front end setting-in syringe needle, inner needle tube body front portion is provided with the fillet of ear ring.
Positive beneficial effect of the present utility model:
1. this utility model is easy to use, convenient power-saving.Only need open control valve during use, spur outer needle tubing, medicinal liquid will enter inner needle tube, after closing, control valve in last, inner needle tube, forms compression air chamber automatically or/and vacuum, only need open gauge tap during use, inject time is short, can obviously alleviate patient's pain and misery.
2. this utility model is simple in structure, and cost is low, makes easy to usely, can be widely used in medical treatment and health field, has better society and economic benefit.
Four, Figure of description:
Fig. 1: one of vapour-pressure type automatic injector sectional structure sketch map
Fig. 2: vapour-pressure type automatic injector vertical view
Fig. 3: two of vapour-pressure type automatic injector sectional structure sketch map
Five, the specific embodiment:
Embodiment one: referring to Fig. 1, Fig. 2,1 is outer needle tubing among the figure, and 2 is inner needle tube, and 3 is piston rod, and 4 is piston, and 5 is needle holder, and 6 for regulating stopcock, and 7 are O-ring seal.
Outer, inner needle tube 2 top is with O-ring seal 7, embed in the outer needle tubing 1, piston rod 3 upper ends are connected with outer needle tubing 1, piston rod 3 lower ends are connected with inner needle tube 2 inner carriers 4, in the present embodiment, inner needle tube 2 pistons 4 upper spaces are not communicated with outer needle tubing 1, and sealing shroud 12 is established with the piston rod contact surface in inner needle tube upper end, and piston rod 3 and outer needle tubing 1 are for detachably fixedlying connected.Inner needle tube 2 front ends are connected with needle holder 5, needle holder 5 is provided with the adjusting stopcock, can be ball valve, certainly also can be needle valve, perhaps pull bar cylindricality switch is provided with one or two or three flow through holes, but needle holder front end setting-in or suit syringe needle, inner needle tube 2 body front portions are provided with ring-band shape projection 9, and the outside of outer needle tubing body is provided with oreilletor and plays 8, pulls out outer needle tubing when being convenient to inhale medicinal liquid.
Only need open when this utility model uses and regulate stopcock 6, spur outer needle tubing 1, medicinal liquid will enter inner needle tube 2 cavitys, automatically formation compression air chamber 10 and vacuum chamber 11 in last, inner needle tube after regulating stopcock 6 and closing, during use syringe needle (not drawing among the figure) is penetrated the injection site, open and regulate stopcock 6, externally under atmospheric pressure and the compressed air effect, medicinal liquid injects human body automatically.Easy to use, quick, laborsaving, inject time is short, can obviously alleviate patient's pain and misery.
Embodiment two: referring to Fig. 3, Fig. 2, number in the figure is identical with embodiment one, represents same meaning, does not repeat.Present embodiment is with embodiment one difference: outer needle tubing 1 is that cavity 10 and 11 is communicated with inner needle tube 2 inner carriers 4 tops, is filled with gas in it, under the user mode, cavity 10 and 11 is in high pressure conditions, during injection,, medicine is injected human body by its air pressure inside effect.Outer needle tubing is not established oreilletor and is played 8.
Claims (8)
1. vapour-pressure type automatic injector, contain inner needle tube, outer needle tubing, needle holder and gauge tap are equipped with piston and piston rod in the outer needle tubing, the inner needle tube front end connects needle holder, needle holder is provided with the adjusting stopcock, it is characterized in that: inner needle tube embeds outer needle tubing by the O-ring seal suit, and the piston rod upper end is sealedly and fixedly connected with outer needle tubing bottom surface, piston-rod lower end is connected with the inner needle tube inner carrier, and inner needle tube piston upper cavity is communicated with outer needle tubing upper cavity.
2. vapour-pressure type automatic injector according to claim 1 is characterized in that: outer, inner needle tube top is provided with boss or groove, suit O-ring seal in it, be dynamically connected with outer needle tubing sealed sliding, needle holder adjusted stopcock is a ball valve, or is needle valve, needle holder front end setting-in syringe needle.
3. vapour-pressure type automatic injector according to claim 1 is characterized in that: needle holder adjusted stopcock is the rod-pulling type cylindricality switch that is provided with two or three flow through holes, but needle holder front end setting-in syringe needle.
4. according to claim 1 or 2 or 3 described vapour-pressure type automatic injectors, it is characterized in that: inner needle tube body front portion is provided with the fillet of ear ring.
5. vapour-pressure type automatic injector, contain inner needle tube, outer needle tubing, needle holder and gauge tap are equipped with piston and piston rod in the outer needle tubing, the inner needle tube front end connects needle holder, needle holder is provided with the adjusting stopcock, it is characterized in that: inner needle tube embeds outer needle tubing by the O-ring seal suit, and the piston rod upper end is sealedly and fixedly connected with outer needle tubing bottom surface, piston-rod lower end is connected with the inner needle tube inner carrier, and inner needle tube piston upper cavity is not communicated with outer needle tubing upper cavity.
6. vapour-pressure type automatic injector according to claim 5 is characterized in that: outer, inner needle tube top is provided with boss or groove, and suit O-ring seal in it is dynamically connected with outer needle tubing sealed sliding.
7. according to claim 5 or 6 described vapour-pressure type automatic injectors, it is characterized in that: needle holder adjusted stopcock is a ball valve, or is needle valve, needle holder front end setting-in syringe needle.
8. according to claim 5 or 6 described vapour-pressure type automatic injectors, it is characterized in that: needle holder adjusted stopcock is the rod-pulling type cylindricality switch that is provided with two or three flow through holes, needle holder front end setting-in syringe needle, inner needle tube body front portion is provided with the fillet of ear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113147 CN2695003Y (en) | 2003-10-30 | 2003-10-30 | Pneumatic automatic injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113147 CN2695003Y (en) | 2003-10-30 | 2003-10-30 | Pneumatic automatic injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695003Y true CN2695003Y (en) | 2005-04-27 |
Family
ID=34762156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320113147 Expired - Fee Related CN2695003Y (en) | 2003-10-30 | 2003-10-30 | Pneumatic automatic injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695003Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137751A (en) * | 2016-08-10 | 2016-11-23 | 郝春生 | Dispenser |
| CN109464164A (en) * | 2018-10-30 | 2019-03-15 | 贵州牧林农业科技发展有限公司 | A kind of disposable sampling pipe for the acquisition of livestock pathogeny liquid |
| CN109475689A (en) * | 2017-03-15 | 2019-03-15 | 金汇和 | The semi-automatic syringe that safety is improved |
-
2003
- 2003-10-30 CN CN 200320113147 patent/CN2695003Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137751A (en) * | 2016-08-10 | 2016-11-23 | 郝春生 | Dispenser |
| CN106137751B (en) * | 2016-08-10 | 2018-09-14 | 郝腾飞 | Dispenser |
| CN109475689A (en) * | 2017-03-15 | 2019-03-15 | 金汇和 | The semi-automatic syringe that safety is improved |
| CN109464164A (en) * | 2018-10-30 | 2019-03-15 | 贵州牧林农业科技发展有限公司 | A kind of disposable sampling pipe for the acquisition of livestock pathogeny liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |