CN204637180U - A kind of unidirectional self-lock formula syringe - Google Patents
A kind of unidirectional self-lock formula syringe Download PDFInfo
- Publication number
- CN204637180U CN204637180U CN201520289269.6U CN201520289269U CN204637180U CN 204637180 U CN204637180 U CN 204637180U CN 201520289269 U CN201520289269 U CN 201520289269U CN 204637180 U CN204637180 U CN 204637180U
- Authority
- CN
- China
- Prior art keywords
- injection tube
- injection rod
- injection
- lock formula
- clamping tooth
- 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
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This utility model discloses a kind of unidirectional self-lock formula syringe, comprises injection tube, plunger, snap close piece, unlock piece.Wherein, injection tube comprises again crimping set in the nipple of the engagement syringe needle set by hollow cavity, front end, tail end and front end and tail end and the formation opening with hollow cavity thereof.Plunger comprises again post handle, injection rod and is positioned at the piston of front end of injection rod, and injection rod has clamping tooth.Snap close piece comprises the inverted U being located at injection tube tail end crimping to be prevented revolving card-bit part, and when injection rod is non-rotatable when injection tube moves, and user can perform locking member, when engaging, user optionally suppresses injection rod to move to injection tube opening direction.Unlock piece comprise be arranged on the following rigid fin of crimping and with can perform locking member with the use of.This utility model adopts unidirectional pair of self-locking manner and anti-piston rod rotation technique, and injection rod is moved in injection tube.People are occupation mode conveniently, and one hand gets final product complete operation.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, is specifically related to a kind of unidirectional self-lock formula syringe.
Background technology
Syringe is generally used for liquid infusion in the multiple different medical program in patient body.Syringe can be connected with syringe needle, conduit, or simply for the treatment of the oral drugs of liquid form.
At present, the syringe that operator uses plastic material to make usually has annular hand grip on cylinder (or flange), and the plunger of thumb drives by operator.Usually, the end of plunger has ring, and the thumb by means of only operator allows it to advance and setback.What now vacuum syringe commercially had adds snap close, but self-locking manner is easy not and stable, more needs both hands to coordinate and carry out when injecting.
In general, the present invention relates to manually operable syringe, more particularly, the present invention relates to the singlehanded operatively syringe with snap close.
Utility model content
In view of this, the application provides a kind of unidirectional self-lock formula syringe, and operator can move to injection tube opening direction by the singlehanded plunger realized wherein.
For solving above technical problem, the technical scheme that this utility model provides is a kind of unidirectional self-lock formula syringe, comprising:
Injection tube, comprises set crimping and the formation opening with described hollow cavity thereof in hollow cavity, front end, the nipple of tail end and the engagement syringe needle set by described front end and described tail end;
Plunger, comprises post handle, injection rod and is positioned at the piston of front end of described injection rod; Wherein, described injection rod is formed by four plates with equal intervals radially extended, and wherein 2 symmetrical plates offers clamping tooth;
Snap close piece, comprises the inverted U being located at described injection tube tail end crimping and prevents revolving card-bit part, injection rod described in this shackle member clamping does not have one of plate of clamping tooth, and when injection rod is non-rotatable when described injection tube moves; And user can perform locking member, when engaging, described injection rod only moves to described injection tube opening direction;
Unlock piece, comprises and is arranged on the following rigid fin of described crimping, and with described perform locking member with the use of, remove the stop of the clamping tooth to described injection rod, described injection rod moved to described injection tube front end.
Preferably, the described spring cavity performing locking member and comprise the locking pipe for stopping the clamping tooth on described injection rod and be socketed in described locking pipe afterbody; Wherein, spring is socketed with outside described spring cavity and its bottom junctions is fixed;
Clamping tooth on described injection rod pushes locking pipe to spring terminal, when the horizontal level of described locking pipe is between clamping tooth between cog, is pushed between described clamping tooth by described spring.
Preferably, described locking pipe to be in described crimping and near described injection tube opening through described injection tube, and described locking tube outer surface also comprises peripheral sealing surface, described peripheral sealing surface matches to form movable seal with the inner surface of described hollow cavity slidably.
Preferably, described locking pipe is provided with the bouncing plate driving the motion of described locking pipe by described unlock piece one end, and described bouncing plate and described unlock piece user when engaging, optionally suppress the movement of described locking pipe.
Preferably, the clamping tooth far-end on described injection rod is arc-shaped.
Preferably, the distance that described rigid fin and described hollow cavity outer surface are arranged is 3.4-3.7mm.
Preferably, during described rigid flaps down and described locking pipe joint, user optionally suppresses described injection rod to move to extreme direction before described injection tube.
Preferably, described piston also comprises peripheral sealing surface, and described peripheral sealing surface matches to form movable seal with the inner surface of the described hollow cavity of described outer housing slidably.
Preferably, the lower edge of described locking pipe near described clamping tooth one end is circular arc.
Preferably, described rigid fin and described injection tube adopt elastomeric material or plastics mantle to be connected.
Compared with prior art, it is described in detail as follows the application:
A kind of unidirectional self-lock formula of the application syringe, comprises injection tube, plunger, snap close piece, unlock piece.Wherein, injection tube comprises set crimping and the formation opening with described hollow cavity thereof in hollow cavity, front end, the nipple of tail end and the engagement syringe needle set by described front end and described tail end.Plunger comprises post handle, injection rod and is positioned at the piston of front end of described injection rod; Wherein, described injection rod has clamping tooth.Snap close piece comprises the inverted U being located at described injection tube tail end crimping to be prevented revolving card-bit part, and when injection rod is non-rotatable when described injection tube moves; And user can perform locking member, when engaging, user optionally suppresses described plunger to move to described injection tube opening direction.Unlock piece comprises and is arranged on the following rigid fin of described crimping, and with described perform locking member with the use of.
A kind of unidirectional self-lock formula of the application syringe, has the advantages such as motility is strong and stability is strong, structure is simple, easy to use.It adopts unidirectional pair of self-locking manner and anti-piston rod rotation technique, ensures that injection rod movement can only have extremely strong self-locking stability backward.In addition, the clamping tooth far-end on injection rod and locking pipe proximal part face lower edge employing designed arc-shaped appearance can reduce resistance during injection rod post-tensioning.In addition, its unlocking manner is unique, and by unlock switch design under syringe crimping, utilize the conventional occupation mode of people, one hand can complete to unlock and push away and pull out.
Accompanying drawing explanation
Fig. 1 is a kind of unidirectional self-lock formula of this utility model structure syringe construction schematic diagram;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
Fig. 3 is the upward view of Fig. 1.
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, 2, 3, a kind of unidirectional self-lock formula of this utility model syringe, comprises injection tube 1, plunger 2, snap close piece 3, unlock piece and rigid fin (41,42).
Wherein, injection tube 1 is the hollow cavity 11 be made up of transparent plastic material, have crimping 14 set in front end 12, the nipple 15 of tail end 13 and the engagement syringe needle set by front end 12 and tail end 13, crimping 14 and the airtight combination of hollow cavity 11 form the opening of injection tube 1.
Plunger 2 comprises post handle 21, injection rod 22 and is positioned at the piston 23 of institute's injection rod 22 front end.Wherein, injection rod 22 is formed by four plates with equal intervals radially extended, and wherein 2 symmetrical plates offer clamping tooth 24, clamping tooth 24 far-end is arc-shaped.Plunger 2 is held slidably via the opening in injection tube 1 tail end 13, and piston 23 also comprises peripheral sealing surface, and this peripheral sealing surface matches to form movable seal with the inner surface of the hollow cavity 11 of injection tube 1 slidably.
Snap close piece 3 comprises that the inverted U being located at injection tube 1 tail end 13 crimping anti-revolves card-bit part 31, user can perform locking member (32,33).Shackle member 31 for clamping injection rod 22 does not have clamping tooth plate one of them, when injection rod 22 is mobile in injection tube 1, because injection rod 22 plate clamping is lived, so injection rod is non-rotatable in moving process by shackle member.User can perform locking member (32,33) user when engaging and optionally suppress injection rod 22 to move to injection tube 1 opening direction.
Unlock piece comprises and is arranged on the following rigid fin of injection tube 1 crimping (41,42), rigid fin (41,42) and user can perform locking member (32,33) form locking piece with the use of.
Opening in the tail end 13 of injection tube 1 has its optimum size and has round-shaped, intert into this opening to make the piston 23 of injection rod 22, after inserting the front end 12 of injection tube 1, install inverted U to prevent revolving card-bit part 31 at the crimping place of the tail end 13 of injection tube 1, prevent the rotation of injection rod 22, and then before use syringe, this syringe is assembled.
Can perform the spring cavity 322 that locking member 32 comprises locking pipe 321 and is socketed in locking pipe 321 afterbody, spring cavity 322 inside is socketed spring 323 and the two bottom junctions is fixed.In the crimping that locking pipe 321 is in injection tube 1 and near injection tube 1 opening through injection tube 1, and its outer surface also comprises peripheral sealing surface, and this peripheral sealing surface matches to form movable seal with the inner surface of hollow cavity 11 slidably.Locking pipe 321 is circular arc by the lower edge of clamping tooth 24 one end, and is provided with the bouncing plate 324 driving locking pipe 321 to move by rigid fin 41 one end, and bouncing plate 324 and rigid fin 41 user when engaging, optionally suppress the movement of locking pipe 321.
Can perform the spring cavity 332 that locking member 33 comprises locking pipe 331 and is socketed in locking pipe 331 afterbody, spring cavity 332 outside is socketed spring 333 and the two bottom junctions is fixed.In the crimping that locking pipe 331 is in injection tube 1 and near injection tube 1 opening through injection tube 1, and its outer surface also comprises peripheral sealing surface, and this peripheral sealing surface matches to form movable seal with the inner surface of hollow cavity 11 slidably.Locking pipe 331 is provided with the bouncing plate 334 driving locking pipe 331 to move by rigid fin 42 one end, and bouncing plate 334 and rigid fin 42 user when engaging, optionally suppress the movement of locking pipe 331.
In the present embodiment, can perform locking member 33 with performing locking member 32 is same way components, and distributes and can perform locking member 32 symmetry.The place that rigid fin (41,42) contacts with bouncing plate (324,334) is provided with for the gathering sill for bouncing plate (324,334) slide-and-guide.Rigid fin (41,42) its area that stretches out can bear ordinary people and points stressed.Wherein, the distance that rigid fin 41 and hollow cavity 11 outer surface are arranged is 3.57mm, and the distance that rigid fin 42 and hollow cavity 11 outer surface are arranged is 3.57mm.
In the present embodiment, rigid fin 41 and injection tube 1 adopt elastomeric material or plastics mantle to be connected.Rigid fin 41 interlinks with the locking pipe 321 on locking pipe 32, integral molded plastic.
This utility model unidirectional self-lock formula syringe, only need one to hold injection tube 1 during use, injection rod 22 draws to injection tube 1 opening direction by another hands.In the process, clamping tooth 24 on injection rod 22 pushes locking pipe (321,331) to spring (323,333) end, when the horizontal level of locking pipe (321,331) is between clamping tooth 24 between cog, under the elastic force effect of spring (323,333), locking pipe (321,331) will be pushed clamping tooth 24 between cog by spring (323,333), to ensure that injection rod 22 now can only move to injection tube 1 opening direction.
In the present embodiment, unlock piece is just just useful when injection rod 22 moves to extreme direction before injection tube 1 by needs.Its implementation procedure is: forefinger and middle finger are placed on respectively rigid fin (41,42) below, thumb is placed on note handle 21, when thumb force pushes away forward, rigid fin (41,42) can be pushed away nearly crimping 14 by forefinger and middle finger, rigid fin (41,42) can utilize bouncing plate (324,334) to push locking pipe (321,331) to injection tube 1 edge when near crimping, locking pipe (321,331) is spun off in the middle of clamping tooth 24 tooth, thus injection rod 22 just can be moved to the front end 12 of injection tube 1.Wherein, can not be out of shape in bouncing plate (324,334) loading process.
This utility model user hands holds injection tube 1, and finger controls to perform locking member (32,33) simultaneously, uses one hand just can optionally suppress plunger 2 to move to injection tube 1 opening direction.
This utility model adopts unidirectional pair of self-locking manner and anti-piston rod rotation technique, ensures that injection rod 22 can only move to injection tube 1 opening direction.Its latching device has extremely strong self-locking stability.In addition, the unlock piece of operational design under injection tube 1 crimping simultaneously, injection rod 22 is moved to direction, injection tube 1 front end 12, and operator's one hand in its conventional occupation mode completes whole operating process.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a unidirectional self-lock formula syringe, is characterized in that, comprising:
Injection tube, comprises set crimping and the formation opening with described hollow cavity thereof in hollow cavity, front end, the nipple of tail end and the engagement syringe needle set by described front end and described tail end;
Plunger, comprises post handle, injection rod and is positioned at the piston of front end of described injection rod; Wherein, described injection rod is formed by four plates with equal intervals radially extended, and wherein 2 symmetrical plates offers clamping tooth;
Snap close piece, comprises the inverted U being located at described injection tube tail end crimping and prevents revolving card-bit part, injection rod described in this shackle member clamping does not have one of plate of clamping tooth, and when injection rod is non-rotatable when described injection tube moves; And user can perform locking member, when engaging, described injection rod only moves to described injection tube opening direction;
Unlock piece, comprises and is arranged on the following rigid fin of described crimping, and with described perform locking member with the use of, remove the stop of the clamping tooth to described injection rod, described injection rod moved to described injection tube front end.
2. a kind of unidirectional self-lock formula syringe according to claim 1, is characterized in that, the described spring cavity performing locking member and comprise the locking pipe for stopping the clamping tooth on described injection rod and be socketed in described locking pipe afterbody; Wherein, spring is socketed with outside described spring cavity and its bottom junctions is fixed;
Clamping tooth on described injection rod pushes locking pipe to spring terminal, when the horizontal level of described locking pipe is between clamping tooth between cog, is pushed between described clamping tooth by described spring.
3. a kind of unidirectional self-lock formula syringe according to claim 2, it is characterized in that, described locking pipe to be in described crimping and near described injection tube opening through described injection tube, and described locking tube outer surface also comprises peripheral sealing surface, described peripheral sealing surface matches to form movable seal with the inner surface of described hollow cavity slidably.
4. a kind of unidirectional self-lock formula syringe according to claim 2, it is characterized in that, described locking pipe is provided with the bouncing plate driving the motion of described locking pipe by described unlock piece one end, and described bouncing plate and described unlock piece user when engaging, optionally suppress the movement of described locking pipe.
5. a kind of unidirectional self-lock formula syringe according to claim 1, is characterized in that, the clamping tooth far-end on described injection rod is arc-shaped.
6. a kind of unidirectional self-lock formula syringe according to claim 1, is characterized in that, the distance that described rigid fin and described hollow cavity outer surface are arranged is 3.4-3.7mm.
7. a kind of unidirectional self-lock formula syringe according to claim 2, is characterized in that, during described rigid flaps down and described locking pipe joint, user optionally suppresses described injection rod to move to extreme direction before described injection tube.
8. a kind of unidirectional self-lock formula syringe according to claim 1, it is characterized in that, described piston also comprises peripheral sealing surface, and described peripheral sealing surface matches to form movable seal with the inner surface of the described hollow cavity of described outer housing slidably.
9. a kind of unidirectional self-lock formula syringe according to claim 2, is characterized in that, the lower edge of described locking pipe near described clamping tooth one end is circular arc.
10. a kind of unidirectional self-lock formula syringe according to claim 1, is characterized in that, described rigid fin and described injection tube adopt elastomeric material or plastics mantle to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520289269.6U CN204637180U (en) | 2015-05-07 | 2015-05-07 | A kind of unidirectional self-lock formula syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520289269.6U CN204637180U (en) | 2015-05-07 | 2015-05-07 | A kind of unidirectional self-lock formula syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204637180U true CN204637180U (en) | 2015-09-16 |
Family
ID=54089963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520289269.6U Expired - Fee Related CN204637180U (en) | 2015-05-07 | 2015-05-07 | A kind of unidirectional self-lock formula syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204637180U (en) |
-
2015
- 2015-05-07 CN CN201520289269.6U patent/CN204637180U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1236829C (en) | Retractable needle assembly for cathether which uses elastomeric member to retract needle | |
| JP4988602B2 (en) | Reciprocating syringe | |
| US6245046B1 (en) | Reciprocating syringes | |
| EP1911480B8 (en) | Syringe for administering multiple doses, comprising an injection needle with sterility protection | |
| JP2014520627A (en) | Flange expansion device and assembly method for use in an injection device | |
| CN209092410U (en) | A kind of novel precharging injection syringe of one-hand operation | |
| KR20180082452A (en) | syringe | |
| CN204637180U (en) | A kind of unidirectional self-lock formula syringe | |
| US20120203183A1 (en) | Syringe | |
| CN202951058U (en) | Injector | |
| CN205073067U (en) | A continuous syringe that interpolation bacterin when is used for fry to aerify packing | |
| CN203724252U (en) | Mouth flusher | |
| CN209204319U (en) | A kind of one-hand operation Anti-stabbing type enclosed syringe structure | |
| CN205659219U (en) | Avoiding residual vaccine syringe | |
| US20140066858A1 (en) | Vacuum-operated retractable safety syringe | |
| CN205814798U (en) | A kind of intravenous syringe | |
| CN204275029U (en) | Neulized inhalation Special injector for dispensing | |
| CN201643206U (en) | Medical pollution-proof safe syringe | |
| CN208389114U (en) | A kind of needle tubing pipe cup | |
| CN108056843B (en) | The telescopic control method of syringe injection head | |
| CN203060485U (en) | Syringe | |
| CN219630335U (en) | Press type needle tube | |
| CN213031279U (en) | Infection-preventing syringe | |
| CN214910586U (en) | Sleeve type anti-splash syringe | |
| CN207768847U (en) | A kind of radiation resistance syringe |
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: 20150916 Termination date: 20180507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |