CN203634584U - Needleless injector - Google Patents
Needleless injector Download PDFInfo
- Publication number
- CN203634584U CN203634584U CN201320839447.9U CN201320839447U CN203634584U CN 203634584 U CN203634584 U CN 203634584U CN 201320839447 U CN201320839447 U CN 201320839447U CN 203634584 U CN203634584 U CN 203634584U
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- liquid storage
- storage chamber
- needleless injector
- locking
- pumping chamber
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Abstract
The utility model relates to a needleless injector, which comprises an injection head, a liquid storage room, a mechanical power and control system and an outer linkage device, wherein the front end of the outer linkage device is tapered to form a pressurization room; the injection head is communicated with outside by an injection hole to inject medical liquid and the injection head and the liquid storage room are communicated by the pressurization room; and the mechanical power and control system comprises a compression spring, a locking device which stores energy by locking the compression spring, a center piston push rod which can enter or go out from the liquid storage room and the pressurization room movably, a power operation rod which can be pulled to drive the center piston push rod to go out from the pressurization room and compress the spring and a release device which can push the center piston push rod to move by releasing energy of the compression spring etc. The needleless injector in the utility model is simple in operations and durable in use; liquid adding becomes convenient; multi-time injection can be realized after one-time liquid injection; and the injection head is disposable, so that cross infection is avoided and safety is ensured.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, is specifically related to a kind of for liquid preparation being delivered into the needleless injector of human epidermal inside.
Background technology
Existing Needleless injection device has plurality of advantages, comprising: not to health care personnel cause the risk of dangerous syringe needle, cross infection to reduce, eliminated the risk of broken needle, the diameter of jet is less than the diameter of hypodermic needle conventionally, has reduced pain.Due to these known advantages, so there is the deisgn product of many pneumatic or gas activated formula needle-less injection devices.But most known needle-less injection devices are by carrying out drive fluid with piston, the limitation of these devices is that they must have air source or other fluid sources with driven plunger, this make these devices use very inconvenient.And the needleless injector of other spring powered formulas, as the application number application that is 200580049989.4 etc., uses under all kinds of environment though can meet, also exist use not convenient, dosing is inconvenient, syringe needle repeatedly uses problems such as there being cross infection risk.
Utility model content
The purpose of this utility model is to provide a kind of needleless injector that can overcome above-mentioned defect.
The concrete technical scheme that this utility model adopts is as follows:
A kind of needleless injector, comprises injector head, liquid storage chamber, machine power and control system, and described liquid storage outdoor arranges an external connecting device being connected with injector head; The front end of described external connecting device is tapered to form pumping chamber; Described injector head passes to injection medicinal liquid by spray-hole mutually with the external world, between injector head and liquid storage chamber, is connected by pumping chamber; Described machine power and control system comprise at least one Compress Spring, one carrys out the locking device of power storage by locking this Compress Spring, the one removable center piston catch bar that enters or exit liquid storage chamber and pumping chamber, one can pull to drive center piston catch bar to exit the power operation bar of pumping chamber Compress Spring, and promotes center piston catch bar and move into the releasing device of pumping chamber by discharging the energy of Compress Spring.
Further, described liquid storage chamber is provided with the dosing valve for adding injecting medical liquid, and dosing valve is connected by guiding device and liquid storage chamber, and described guiding device can be a rubber tube.
Further, described injector head is selected disposable tip, avoids cross infection.
Further, described liquid storage chamber adopts glass tubing material, and described external connecting device is provided with openning in the lateral symmetry of liquid storage chamber part, so that Real Time Observation liquid expression condition.
Further, described locking device comprises latch assembly, is positioned at the locking steel ball of arranging ringwise on latch assembly top, and the locking spring of restriction and fixing steel ball; Described releasing device is the release key of retracting spring energy, and release key inside is provided with the groove that can agree with mutually with locking steel ball.
Further, described power operation bar is fixed on external connecting device by an annular fulcrum fixed mount; Liquid storage chamber is fixed on external connecting device inside by one with the steel pad of its close contact formation sealing state, and Gang Dian center is provided with the centre bore that admissible centre piston catch bar passes through.Described power operation masthead end is provided with the back-moving spring that can make its playback, the bottom that the outer handle length of power operation bar is longer than Compress Spring.
Further, described liquid storage chamber and pumping chamber are threaded connection, and its seam is provided with sealing ring.
This utility model has improved general spring powered design, and it is more convenient to use; And on the basis of spring powered principle, improve liquid filling passage, in the case of not dismantling the liquid storage chamber of having sterilized, by connection tube, liquid filling hole is connected with liquid storage chamber, directly medicinal liquid is injected to liquid storage indoor, use more convenient and quicker.A fluid injection, multiple injection, easy to use.Whole syringe main material is selected high-quality medical stainless steel material; High-temperature resistance plastice rubber seal is selected in each assembly junction; Spring is selected high-quality Compress Spring, durable in use.Injector head is selected disposable jet head simultaneously, and injector head is detachable, accomplishes disposable use, avoids the cross infection phenomenon between each individuality, guarantees the personal safety in using.
Brief description of the drawings
Fig. 1 is Product breakdown structure schematic diagram of the present utility model.
Fig. 2 is the overall diagram of product structure of the present utility model.
Reference numeral:
Injector head 1, pumping chamber 2, interface 3, the first sealing rings 4, the second sealing ring 5, liquid storage chamber 6 steel pad 7, the three sealing rings 8, hold-down screw 9, external connecting device 10, annular fulcrum fixed mount 11, center piston catch bar 12, rubber tube 13, dosing valve 14, screw 15, power operation bar 16, Compress Spring 17, fixing spring 18, assembly 19, locking steel ball 20, release key 21, nut 22, back-moving spring 23, spray-hole 24
Detailed description of the invention
The present invention replaces the needleless injector that has needle injection injectable drug.Product is made up of with control system, external connecting device injector head (1), pumping chamber (2), liquid storage chamber (6), machine power.
In the middle of injector head (1), be provided with passage, passage top communicates with pumping chamber (2), and bottom communicates with the external world by fine spray-hole (24).Under high pressure conditions, liquid ejects to reach injection object from spray-hole (24).
Pumping chamber (2) is taper, is positioned between injector head (1) and liquid storage chamber (6), and communicates with injector head (1) and liquid storage chamber (6).Center piston catch bar (12) can enter pumping chamber (2) from liquid storage chamber (6) are pushed.
Liquid storage chamber (6) communicates with pumping chamber (2), adopts glass tubing material to make, so that the indoor liquid level situation of Real Time Observation liquid storage.The first sealing ring (4), the second sealing ring (5) and the 3rd sealing ring (8) are located to be respectively arranged with the interface (3) of pumping chamber (2) in liquid storage chamber (6).Hold-down screw (9) plays the effect of fixing the 3rd sealing ring (8), and its screw center is hexagon in perforate.When screwing after this hold-down screw (9), the second sealing ring (5) is compressed to diminish, realize close contact with center piston catch bar (12).On liquid storage chamber (6), be also provided with dosing valve (14), dosing valve (14) is connected by rubber tube (13) and liquid storage chamber (6), is convenient to add injecting medical liquid.
The outside of this needleless injector is an external connecting device (10) being connected with injector head (1).External connecting device (10) stage casing internal welding is connected to a stainless steel pad (7).Steel pad (7) center is provided with centre bore, and admissible centre piston catch bar (12) passes through.Steel pad (7) and liquid storage chamber (6) are by resistant to elevated temperatures plastic mattress close contact and form sealing state.One opening is arranged at the outer external connecting device top of steel pad (7), so that lever enters Compress Spring with storage power.External connecting device (10) stage casing is welded with a stainless annular fulcrum fixed mount (11), so that power operation bar (16) work.Pumping chamber (2) is positioned at the front end of external connecting device, and front and back are connected with external connecting device with injector head (1) respectively by screw thread.External connecting device is provided with symmetrically arranged openning in the both sides of liquid storage chamber (6) part, so that the indoor liquid level situation of Real Time Observation liquid storage.
Machine power and control system are made up of power operation bar (16), Compress Spring (17), back-moving spring (23), locking device, releasing device, center piston catch bar (12) etc.It is outside and firmly fixing by support that power operation bar (16) is positioned at above-mentioned rustless steel pad (7) opening part top, action bars fulcrum is fixing by screw (15), top is provided with the back-moving spring (23) that can make its playback, and the outer handle length of action bars should be longer than the bottom of Compress Spring (17).The compression travel of Compress Spring (17) is the length of inner space, pumping chamber (2).Center catch bar (12) is used to lead in Compress Spring (17) to play the effect of fixing spring.Locking device comprises locking spring (18), latch assembly (19) and locking steel ball (20) etc.Releasing device is the release key (21) of retracting spring energy.
Be pulled upwardly power operation bar (16) by power, action bars (16) promotes center catch bar (12) by after spring-compressed, center catch bar (16) upwards exits pumping chamber, liquid in liquid storage chamber (6) enters in pumping chamber (2) automatically, and the size by pumping chamber (2) and center piston catch bar (12) enter the length of pumping chamber (2) and control the amount of spraying medicinal liquid.Compress Spring (17) store mechanical energy after locking device compresses and locks: release key is released projection by the top of center catch bar (12), masthead end annular locking steel ball (20) around agrees with mutually with release key (21) bottom internal recess, locking center catch bar (12), the fixing spring (18) of the inner fixing and locking steel ball of locking device (20) plays restriction, fixing, locking steel ball.If press release key (21), the steel ball of locking exits locking slot, Compress Spring (17) return releases energy, quick promotion of moment center catch bar (12) enters pumping chamber (2), make pumping chamber's moment produce high pressure, the injection micropore by injector head (1) is by liquid very fast the ejecting that nebulize.And, the more little motive force of more saving catch bar of diameter of pumping chamber (2).After pull-up power operation bar (16), compressed locking state the power storage of entering of Compress Spring (17), enters next circulation again.
This utility model pumping chamber piston stroke capacity is 0.1ml, each ejectable liquid 0.1ml, and fill liquid storage chamber can continuous injection 50 times, can refill liquid make continuous injection after having sprayed by special liquid feeding passage.Liquid enters rapidly subcutaneously by 0.13mm micropore to be greater than the flow velocity of 240 meter per seconds, completes rapidly injection without subjective pain in the situation that, reaches the object of painless injection.
This utility model is the improvement to painless needleless injector, and whole syringe main material is selected high-quality medical stainless steel material; Liquid storage chamber adopts glass tubing material, so that Real Time Observation liquid expression condition; High-temperature resistance plastice rubber seal is selected in each assembly junction; Injector head is selected disposable jet head, avoids cross infection, guarantees the personal safety in using; Spring is selected high-quality Compress Spring, and locker selects steel ball to coordinate with peripheral groove, durable in use.Certainly, this utility model, except being applied to human body, also can be equal to the body surface injection that applies to other animals.
Above-described embodiment is only for the inventive concept of the present utility model of explaining; but not the restriction that utility model right is protected; all utilize this design to carry out that form equivalent variations, equivalent substitute etc. to this utility model unsubstantiality is changed, all should fall into protection domain of the present utility model.
Claims (10)
1. a needleless injector, comprise injector head (1), liquid storage chamber (6), machine power and control system, it is characterized in that: the external connecting device (10) that described liquid storage chamber (6) outer setting one is connected with injector head (1), the front end of described external connecting device (10) is tapered to form pumping chamber (2), described injector head (1) passes to injection medicinal liquid by spray-hole (24) mutually with the external world, between injector head (1) and liquid storage chamber (6), is connected by pumping chamber (2), described machine power and control system comprise at least one Compress Spring (17), one carrys out the locking device of power storage by locking this Compress Spring (17), the one removable center piston catch bar (12) that enters or exit liquid storage chamber (6) and pumping chamber (2), one can pull to drive center piston catch bar (12) to exit the power operation bar (16) of pumping chamber (2) Compress Spring, and promote center piston catch bar (12) and move into the releasing device of pumping chamber (2) by discharging the energy of Compress Spring (17).
2. needleless injector according to claim 1, it is characterized in that, described liquid storage chamber (6) is provided with the dosing valve (14) for adding injecting medical liquid, and dosing valve (14) is connected by a guiding device and liquid storage chamber (6).
3. needleless injector according to claim 2, is characterized in that, described guiding device is a rubber tube (13).
4. needleless injector according to claim 2, it is characterized in that, described liquid storage chamber (6) adopts glass tubing material, described external connecting device (10) is provided with openning in the lateral symmetry of liquid storage chamber (6) part, so that Real Time Observation liquid expression condition.
5. needleless injector according to claim 4, is characterized in that, described injector head (1) is selected disposable tip, avoids cross infection.
6. needleless injector according to claim 4, it is characterized in that, described locking device comprises latch assembly (19), is positioned at the locking steel ball (20) that latch assembly (19) top is arranged ringwise, and the locking spring of restriction and fixing steel ball (18); Described releasing device is the release key (21) of retracting spring energy, and release key (21) inside is provided with the groove that can agree with mutually with locking steel ball (20).
7. needleless injector according to claim 6, is characterized in that, described power operation bar (16) is fixed on external connecting device (10) by an annular fulcrum fixed mount (11); Liquid storage chamber (6) is fixed on external connecting device (10) inside by one with the steel pad (7) of its close contact formation sealing state, and steel pad (7) center is provided with the centre bore that admissible centre piston catch bar (12) passes through.
8. needleless injector according to claim 7, it is characterized in that, described power operation bar (16) top is provided with the back-moving spring (23) that can make its playback, and the outer handle length of power operation bar is longer than the bottom of Compress Spring (17).
9. needleless injector according to claim 8, it is characterized in that, between described liquid storage chamber (6) and pumping chamber (2), described pumping chamber (2) and external connecting device rear end be all threaded connection, sealing ring is located to be provided with the interface (3) of pumping chamber (2) in described liquid storage chamber (6).
10. needleless injector according to claim 9, is characterized in that, the main material of described syringe adopts medical stainless steel material, and the sealing ring of each assembly junction all adopts resistant to elevated temperatures plastic, rubber pad sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839447.9U CN203634584U (en) | 2013-12-19 | 2013-12-19 | Needleless injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839447.9U CN203634584U (en) | 2013-12-19 | 2013-12-19 | Needleless injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203634584U true CN203634584U (en) | 2014-06-11 |
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ID=50865871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320839447.9U Expired - Fee Related CN203634584U (en) | 2013-12-19 | 2013-12-19 | Needleless injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203634584U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771080A (en) * | 2016-03-12 | 2016-07-20 | 刘颖 | Beautifying sprayer |
| CN106344205A (en) * | 2016-10-31 | 2017-01-25 | 湖北省国融商贸有限公司 | Needle-free high-speed jet flow injection syringe |
| CN112545706A (en) * | 2020-12-23 | 2021-03-26 | 牧原食品股份有限公司 | Needleless injector |
-
2013
- 2013-12-19 CN CN201320839447.9U patent/CN203634584U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771080A (en) * | 2016-03-12 | 2016-07-20 | 刘颖 | Beautifying sprayer |
| CN106344205A (en) * | 2016-10-31 | 2017-01-25 | 湖北省国融商贸有限公司 | Needle-free high-speed jet flow injection syringe |
| CN112545706A (en) * | 2020-12-23 | 2021-03-26 | 牧原食品股份有限公司 | Needleless injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20161219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |