CN201186086Y - Amount-adjusting needleless injector - Google Patents
Amount-adjusting needleless injector Download PDFInfo
- Publication number
- CN201186086Y CN201186086Y CNU2008200052913U CN200820005291U CN201186086Y CN 201186086 Y CN201186086 Y CN 201186086Y CN U2008200052913 U CNU2008200052913 U CN U2008200052913U CN 200820005291 U CN200820005291 U CN 200820005291U CN 201186086 Y CN201186086 Y CN 201186086Y
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- CN
- China
- Prior art keywords
- injector
- bearing plate
- piston
- injection tube
- spring
- 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 discloses a needle-free buffer injector which can adjust the injector dosage, which has a rubber buffer needle-free injector head with micro-conical hole in front part of the injector cylinder. A rotary medicine feed valve and a button typed pressure switch are arranged on the injector cylinder. A piston for pushing liquid medicine is positioned in the injector cylinder. A screw rod is loaded in the middle part of the piston, which pieces a bearing board which is located by a limit block. A spring resists the bearing board and is fixed by a spring fixation base on the back of the injector cylinder. The scale mark part of the screw rod is projected from the spring fixation base and the tail is fixed with a dosage adjustment knob. The screw knob pushes the piston forwards or backwards by rotating the dosage adjustment knob, thereby the deposit space of the medicine quantity can be adjusted.
Description
Affiliated technical field
This utility model relates to and a kind ofly changes the needleless buffering syringe of injection volume by the regulating piston position, belongs to medical apparatus.
Background technology
According to change piston propulsive position in injection tube, thereby change spatial size in the injection tube, the dosage that medicinal liquid is entered in the injection tube is regulated accurately.
Summary of the invention
In order to reach the injected dose of scalable and strict control needleless buffering syringe, this utility model provides a kind of accent amount needleless injector, link to each other with injection tube by a needleless buffering injection head of making to have miniature vertebral foramen with medical rubber-plastic, rotation is housed on injection tube advances the medicine valve, key switch, the piston of band push rod is housed in the injection tube, buckle and dosage scale are arranged on the push rod, push rod passes bearing plate by buckle, bearing plate is by bearing plate limited block fixed position, the high pressure spring withstands bearing plate, spring is fixed by spring fixed seat, and the afterbody of push rod passes spring fixed seat and links to each other with the dosage adjusting knob, has dose calibration to indicate in the extending area of push rod.Can change the position of piston in injection tube by rotation dosage adjusting knob, reach the effect of regulating and controlling injection tube inner liquid medicine dosage.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is an accent amount needleless injector outline drawing.
Fig. 2 is the vertical section structural map of accent amount needleless injector embodiment.
1. needleless buffering injection head among the figure, 2. injection tube 3. rotates medicine valve, 4. piston, 5. screw putter, 6. bearing plate, 7. key switch, 8. bearing plate limited block, 9. spring, 10. spring fixed seat, 11. dose calibrations indicate, 12. dosage adjusting knobs, 13. set bolts.
The specific embodiment
In Fig. 1, needleless buffering injection head (1) is contained in injection tube (2) front portion, the top of injection tube (2) has rotation to advance medicine valve (3) and key switch (7), spring fixed seat (10) is contained in injection tube (2) rear portion, the screw putter (5) that has dose calibration sign (11) is passed by spring fixed seat (10) rear portion, links to each other with dosage adjusting knob (12).
In embodiment illustrated in fig. 2, the needleless buffering injection head (1) that has the taper microvoid is installed in the front portion of injection tube (2), the top of injection tube (2) has rotation to advance medicine valve (3) and key switch (7), piston (4) is installed in the cavity of injection tube (2), piston (4) is gone up screw putter (5) is installed, screw putter (5) passes bearing plate (6), bearing plate (6) is spacing by bearing plate limited block (8), spring (9) withstands bearing plate (6), spring fixed seat (10) is installed in the rear portion of injection tube (2), the boss fixing spring (9) of spring fixed seat (10), spring fixed seat (10) is passed at the rear portion of screw putter (5), and dosage adjusting knob (12) is fixed on the rear portion of screw putter (5) by set bolt (13).
Claims (1)
1. accent amount needleless injector, the needleless buffering injection head that has miniature vertebral foramen is installed in the front portion of injection tube, the top of injection tube is equipped with rotation and is advanced medicine valve and key switch, piston is housed in the injection tube, screw putter is equipped with at the piston middle part, the rib-loop push rod passes bearing plate, bearing plate is located by the bearing plate limited block, spring withstands bearing plate, spring fixed seat is contained in the rear portion of injection tube, the part that screw putter band scale indicates is stretched out from spring fixed seat, and the dosage adjusting knob is fixed on the afterbody of screw putter, it is characterized in that: screw putter is linked to each other by buckle with bearing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200052913U CN201186086Y (en) | 2008-04-14 | 2008-04-14 | Amount-adjusting needleless injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200052913U CN201186086Y (en) | 2008-04-14 | 2008-04-14 | Amount-adjusting needleless injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201186086Y true CN201186086Y (en) | 2009-01-28 |
Family
ID=40309099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200052913U Expired - Fee Related CN201186086Y (en) | 2008-04-14 | 2008-04-14 | Amount-adjusting needleless injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201186086Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772838A (en) * | 2012-08-06 | 2012-11-14 | 杨荣一 | Disposable extradural injector for automatic detection |
| CN107137805A (en) * | 2017-06-19 | 2017-09-08 | 钱月珍 | quantitative needleless injection pen |
| CN112312948A (en) * | 2018-04-19 | 2021-02-02 | 赛诺菲 | Buffer for an injection device |
| CN112569431A (en) * | 2020-12-10 | 2021-03-30 | 易舒康(山东)生物科技有限公司 | Safe needleless injector with external dose display function |
-
2008
- 2008-04-14 CN CNU2008200052913U patent/CN201186086Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772838A (en) * | 2012-08-06 | 2012-11-14 | 杨荣一 | Disposable extradural injector for automatic detection |
| CN102772838B (en) * | 2012-08-06 | 2014-07-02 | 杨荣一 | Disposable extradural injector for automatic detection |
| CN107137805A (en) * | 2017-06-19 | 2017-09-08 | 钱月珍 | quantitative needleless injection pen |
| CN112312948A (en) * | 2018-04-19 | 2021-02-02 | 赛诺菲 | Buffer for an injection device |
| CN112569431A (en) * | 2020-12-10 | 2021-03-30 | 易舒康(山东)生物科技有限公司 | Safe needleless injector with external dose display function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20100414 |