CN110124158A - The reset assembly of syringe - Google Patents
The reset assembly of syringe Download PDFInfo
- Publication number
- CN110124158A CN110124158A CN201910478483.9A CN201910478483A CN110124158A CN 110124158 A CN110124158 A CN 110124158A CN 201910478483 A CN201910478483 A CN 201910478483A CN 110124158 A CN110124158 A CN 110124158A
- Authority
- CN
- China
- Prior art keywords
- reset
- inner cavity
- cylinder barrel
- core bar
- piston
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 34
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000001143 conditioned effect Effects 0.000 description 3
- 239000008358 core component Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
Abstract
The present invention relates to injector technology field, especially a kind of reset assembly of syringe, which includes: reset core bar；Cylinder barrel is resetted, there is the inner cavity for accommodating fluid media (medium)；Return piston；And pedestal, return piston is fixed on the base, it is located to reset to be arranged between core bar and return piston in inner cavity and is filled with fluid media (medium), the present invention is when the piston of syringe needs to be reset, core bar will be resetted first to move down, make the fluid media (medium) in inner cavity that reset cylinder barrel be pushed to move up, then reset core bar is inserted into the inside of syringe, make itself and piston contact, and syringe is fixed with respect to the reset assembly, reset cylinder barrel then need to be only pressed downwards, piston can be jacked up upwards by reset core bar, make piston reset, piston is stepped back to keeping a fixed spacing between push rod to realize, it is injected so that piston slap push rod is formed, and then it can realize and fixed quantity injection is carried out to the medical fluid in same syringe.
Description
Technical field
The present invention relates to injector technology field, especially a kind of reset assembly of syringe.
Background technique
Existing pen type needleless injector generally includes piston component and medicine core component, and when use is pushed by fluid media (medium) lives
Piston in plug assembly is fired the medical fluid in syringe from the injection orifice of syringe by push rod to hit push rod in medicine core component
It sprays, forms high-pressure jet and injected, during syringe calibrated shot, patient is using syringe calibrated shot every time
Afterwards, it needs to reset syringe, be used when in case of calibrated shot next time, the independent work resetted currently on the market about syringe
Tool not yet occurs, present invention seek to address that this problem.
Summary of the invention
The technical problem to be solved by the present invention is in order to solve in the prior art its piston of needleless injector in one injection
It is that can not carry out stepping back for quantitative stroke afterwards, causes it that can not carry out asking for fixed quantity injection to the medical fluid in same syringe
Topic, now provides a kind of reset assembly of syringe.
The technical solution adopted by the present invention to solve the technical problems is: a kind of reset assembly of syringe, the reset group
Part includes:
Core bar is resetted, for pushing the piston of syringe to be resetted；
Cylinder barrel is resetted, there is the inner cavity for accommodating fluid media (medium), the upper end for resetting core bar and being slidably arranged in inner cavity；
Return piston, is plugged in the lower end of inner cavity, and the inner cavity is slidably connected with return piston；
And pedestal, the return piston are fixed on the base, be located in the inner cavity reset core bar and return piston it
Between setting be filled with fluid media (medium), have in the inner cavity to push for fluid media (medium) and reset cylinder barrel and moved up along return piston
Stress surface, when resetting core bar and pushing down on fluid media (medium), fluid media (medium) is pushed from the stress surface of inner cavity resets cylinder barrel along multiple
Position piston moves up；When reset cylinder barrel pushes down on fluid media (medium), fluid media (medium) is pushed from the bottom for resetting core bar to be resetted
Core bar is moved up along inner cavity.
This programme will reset core bar first and move down, make the fluid media (medium) in inner cavity when the piston of syringe needs to be reset
It pushes and resets cylinder barrel and move up, then will reset core bar and be inserted into the inside of syringe, make itself and piston contact, and by syringe phase
The reset assembly is fixed, then only reset cylinder barrel need to be pressed downwards, piston can be jacked up upwards by reset core bar, make piston
It resets；The stroke that cylinder barrel moves down wherein is resetted using control, the stroke for resetting core bar and moving up is controlled with this.
Further, the thin lower section of the upper section of the inner cavity is thick, forms step surface between the thick section and thin segment of the inner cavity, institute
Stating step surface is the stress surface, and the reset core bar is slidably arranged in the thin segment of inner cavity, the return piston sliding setting
In the thick section of inner cavity.
Further, it is provided with sealing ring between reset core bar and the inner cavity, between the return piston and inner cavity
It is provided with sealing ring.
In order to accurately control the stroke for resetting core bar and moving up, further, the reset cylinder barrel housing, which is equipped with, resets rotation set,
The reset rotation set is rotatably arranged on pedestal, and adjusting set is sequentially connected in the reset rotation set, and the adjusting set is located at multiple
The lower section of position cylinder barrel, when rotation resets rotation set, the opposite cylinder barrel that resets of adjusting set is close to or far from using changing, adjusting set is opposite
The distance between cylinder barrel is resetted, the stroke quantitative for moving down the reset cylinder barrel in stroke highest point, i.e. reset cylinder barrel is displaced downwardly to
It is conditioned reset cylinder barrel when set blocks and is in stroke minimum point, by determining that the stroke for resetting cylinder barrel is also assured that reset coil
The stroke of bar.
Further, the inner wall for resetting rotation set and the outer wall thread of adjusting set connect, and are fixed with and lead on the pedestal
To bar, the guide rod passes through adjusting set and is slidably connected with adjusting set.
Further, pilot hole is offered on the reset cylinder barrel, the guide rod is slidably connected in pilot hole.
Further, the bottom for resetting rotation set is outward extended with bottom edge, is fixed with pressure by screw on the pedestal
Plate, the pressing plate limit live to reset rotation set in the top on bottom edge, the pedestal holding.
Cylinder barrel is resetted in order to prevent to slide from return piston, further, is arranged on the outer peripheral surface for resetting cylinder barrel
There is annular protrusion, there are confined planes on the inner wall for resetting rotation set, the confined planes are located at the surface of annular protrusion.
It is clearly grasped when for ease of operation and resets the stroke that cylinder barrel can move down, further, the reset after adjusting
Length scale mark is provided on the outer wall of cylinder barrel.
The beneficial effects of the present invention are: the reset assembly of syringe of the present invention is when the piston of syringe needs to be reset, it is first
Core bar will first be resetted to move down, make the fluid media (medium) in inner cavity that reset cylinder barrel be pushed to move up, core bar then will be resetted and be inserted into injection
The inside of device makes itself and piston contact, and syringe is fixed with respect to the reset assembly, then need to only press restoring cylinder downwards
Cylinder, piston can be jacked up upwards by reset core bar, make piston reset, thus realize make after per injection piston step back to
A fixed spacing is kept between push rod, so as to piston slap push rod formed inject, and then can realize to the medical fluid in same syringe into
The injection of row fixed quantity.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the schematic three dimensional views of the reset assembly of syringe of the present invention；
Fig. 2 is that the reset assembly of syringe of the present invention resets the schematic cross-sectional view that core bar moves down；
Fig. 3 is the partial enlargement diagram of A in Fig. 2；
Fig. 4 is the partial enlargement diagram of B in Fig. 2；
Fig. 5 is that the reset assembly of syringe of the present invention resets the schematic cross-sectional view that core bar moves up.
In figure: 1, reset core bar, 2, reset cylinder barrel, 2-1, inner cavity, 2-11, thin segment, 2-12, thick section, 2-13, stress surface,
2-2, pilot hole, 2-3, annular protrusion, 3, return piston, 4, pedestal, 5, sealing ring, 6, reset rotation set, 6-1, bottom edge, 6-2, limit
Plane, 7, adjusting set, 8, guide rod, 9, screw, 10, pressing plate, 11, length scale mark.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention, direction and referring to (for example,
Upper and lower, left and right, etc.) can be only used for helping the description to the feature in attached drawing.Therefore, it is not adopted in restrictive sense
With following specific embodiments, and claimed theme is only limited by appended claims and its equivalent form
Range.
Embodiment 1
As shown in Figs. 1-5, a kind of reset assembly of syringe, the reset assembly include:
Core bar 1 is resetted, for pushing the piston of syringe to be resetted；
Cylinder barrel 2 is resetted, there is the inner cavity 2-1 for accommodating fluid media (medium), the reset core bar 1 is slidably arranged in inner cavity 2-
1 upper end；
Return piston 3, is plugged in the lower end of inner cavity 2-1, and the inner cavity 2-1 is slidably connected with return piston 3；
And pedestal 4, the return piston 3 are fixed on pedestal 4, are located in the inner cavity 2-1 and are resetted core bar 1 and reset
Setting is filled with fluid media (medium) between piston 3, has in the inner cavity 2-1 and pushes reset cylinder barrel 2 along reset for fluid media (medium)
Stress surface 2-13 that piston 3 moves up, when resetting core bar 1 and pushing down on fluid media (medium), fluid media (medium) from inner cavity 2-1 by
Power face 2-13 pushes reset cylinder barrel 2 to move up along return piston 3；When reset cylinder barrel 2 pushes down on fluid media (medium), fluid is situated between
Matter pushes reset core bar 1 to move up along inner cavity 2-1 from the bottom for resetting core bar 1.
When it is implemented, gas or hydraulic oil can be used in fluid media (medium).
It is provided with length scale mark 11 on the outer wall for resetting cylinder barrel 2, is clearly grasped when to operate after adjusting
Reset the stroke that cylinder barrel 2 can move down.
The thin lower section of upper section of the inner cavity 2-1 is thick, forms step between the thick section 2-12 and thin segment 2-11 of the inner cavity 2-1
Face, the step surface are the stress surface 2-13, and the reset core bar 1 is slidably arranged in the thin segment 2-11 of inner cavity 2-1, described
Return piston 3 is slidably arranged in the thick section 2-12 of inner cavity 2-1.
Sealing ring 5 is provided between the reset core bar 1 and inner cavity 2-1, between the return piston 3 and inner cavity 2-1
It is provided with sealing ring 5.
It is arranged with outside the reset cylinder barrel 2 and resets rotation set 6, the reset rotation set 6 is rotatably arranged on pedestal 4, described multiple
Adjusting set 7 is sequentially connected in the rotation set 6 of position, the adjusting set 7 is located at the lower section for resetting cylinder barrel 2, when rotation resets rotation set 6,
Adjusting set 7 is opposite to reset cylinder barrel 2 close to or far from adjusting set 7 is opposite to reset the distance between cylinder barrel 2 using changing, and makes to be in
The stroke quantitative that the reset cylinder barrel 2 of stroke highest point moves down, i.e. reset cylinder barrel 2, which are displaced downwardly to be conditioned when set 7 blocks, resets cylinder barrel 2
In stroke minimum point, by determining that the stroke for resetting cylinder barrel 2 is also assured that the stroke of reset core bar 1.
The inner wall for resetting rotation set 6 is connect with the outer wall thread of adjusting set 7, is fixed with guide rod 8 on the pedestal 4,
The guide rod 8 passes through adjusting set 7 and is slidably connected with adjusting set 7, offers pilot hole 2-2 on the reset cylinder barrel 2, described
Guide rod 8 is slidably connected in pilot hole 2-2.
The bottom for resetting rotation set 6 is outward extended with bottom edge 6-1, passes through screw 9 on the pedestal 4 and is fixed with pressing plate
10, the limit of pressing plate 10 lives to reset rotation set 6 in the top of bottom edge 6-1,4 holding of pedestal, is rotated with this by rotation set 6 is resetted
Setting limits on pedestal 4, and by its axial position.
It is provided with annular protrusion 2-3 on the outer peripheral surface for resetting cylinder barrel 2, there is limit on the inner wall for resetting rotation set 6
Plane 6-2, the confined planes 6-2 are located at the surface of annular protrusion 2-3, can prevent from resetting cylinder barrel 2 and return piston 3 occurs to take off
From.
The reset assembly of said syringe when in use, first with stroke needed for secondary medical fluid amount to be injected be according to
According to determining the stroke retracted needed for piston, set after resetting the stroke that moves down of cylinder barrel 2, cylinder barrel 2 will be resetted and be displaced downwardly to the trip
Reading in the mark of length scale corresponding to 6 end face of Shi Fuwei rotation set 11, then spinning reduction rotation set 6 changes 7 phase of adjusting set
To the distance between cylinder barrel 2 is resetted, 2 bottom of cylinder barrel is resetted until adjusting set 7 is against；
Then core bar 1 will be resetted to move down, the fluid media (medium) in the 2-1 of inner cavity is pushed on reset cylinder barrel 2 and move to stroke highest
Point；Then the medicine core component on syringe is removed, to reset the inside that core bar 1 is inserted into syringe, and with syringe
Piston contact；
Syringe, which can then be grasped, fixes it with respect to the reset assembly, and last need to only press downwards resets cylinder barrel 2,
It is resisted until reset 2 bottom of cylinder barrel is conditioned set 7, piston can be jacked up upwards by reset core bar 1, reset piston accurately.
Above-mentioned desirable embodiment according to the present invention is enlightenment, and through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention'.This invention it is technical
Range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (9)
1. a kind of reset assembly of syringe, it is characterised in that: the reset assembly includes:
It resets core bar (1), for pushing the piston of syringe to be resetted；
It resets cylinder barrel (2), there is the inner cavity (2-1) for accommodating fluid media (medium), the reset core bar (1) is slidably arranged in inner cavity
The upper end of (2-1)；
Return piston (3), is plugged in the lower end of inner cavity (2-1), and the inner cavity (2-1) is slidably connected with return piston (3)；
And pedestal (4), the return piston (3) are fixed on pedestal (4), are located in the inner cavity (2-1) and reset core bar (1)
Setting is filled with fluid media (medium) between return piston (3), has in the inner cavity (2-1) and pushes restoring cylinder for fluid media (medium)
The stress surface (2-13) that cylinder (2) is moved up along return piston (3), when reset core bar (1) pushes down on fluid media (medium), fluid
Medium pushes reset cylinder barrel (2) to move up along return piston (3) from the stress surface (2-13) of inner cavity (2-1)；When reset cylinder barrel
(2) when pushing down on fluid media (medium), fluid media (medium) from reset core bar (1) bottom push reset core bar (1) along inner cavity (2-1) to
Upper movement.
2. the reset assembly of syringe according to claim 1, it is characterised in that: under the upper section of the inner cavity (2-1) is thin
Section is thick, and step surface is formed between the thick section (2-12) and thin segment (2-11) of the inner cavity (2-1), and the step surface is the stress
Face (2-13), reset core bar (1) are slidably arranged in the thin segment (2-11) of inner cavity (2-1), return piston (3) sliding
It is arranged in the thick section (2-12) of inner cavity (2-1).
3. the reset assembly of syringe according to claim 1, it is characterised in that: the reset core bar (1) and inner cavity (2-
1) it is provided between sealing ring (5), is also equipped with sealing ring (5) between the return piston (3) and inner cavity (2-1).
4. the reset assembly of syringe according to claim 1, it is characterised in that: be arranged with outside the reset cylinder barrel (2)
It resets rotation set (6), the reset rotation set (6) is rotatably arranged on pedestal (4), is sequentially connected with tune in the reset rotation set (6)
Section set (7), the adjusting set (7) are located at the lower section for resetting cylinder barrel (2), and when rotation resets rotation set (6), adjusting set (7) is opposite
Reset cylinder barrel (2) close to or far from.
5. the reset assembly of syringe according to claim 4, it is characterised in that: it is described reset rotation set (6) inner wall with
The outer wall thread of adjusting set (7) connects, and is fixed with guide rod (8) on the pedestal (4), and the guide rod (8) passes through adjusting set
(7) and with adjusting set (7) it is slidably connected.
6. the reset assembly of syringe according to claim 5, it is characterised in that: offered on the reset cylinder barrel (2)
Pilot hole (2-2), the guide rod (8) are slidably connected in pilot hole (2-2).
7. the reset assembly of syringe according to claim 4, it is characterised in that: it is described reset rotation set (6) bottom to
It is extended with bottom edge (6-1), is fixed with pressing plate (10) on the pedestal (4) by screw (9) outside, pressing plate (10) limit is the bottom of at
The top on side (6-1), pedestal (4) holding live to reset rotation set (6).
8. the reset assembly of syringe according to claim 4, it is characterised in that: the outer peripheral surface for resetting cylinder barrel (2)
On be provided with annular protrusion (2-3), it is described reset rotation set (6) inner wall on have confined planes (6-2), the confined planes (6-2)
Positioned at the surface of annular protrusion (2-3).
9. the reset assembly of syringe according to claim 4, it is characterised in that: on the outer wall for resetting cylinder barrel (2)
It is provided with length scale mark (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910478483.9A CN110124158B (en) | 2019-06-03 | 2019-06-03 | Reset assembly for syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910478483.9A CN110124158B (en) | 2019-06-03 | 2019-06-03 | Reset assembly for syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110124158A true CN110124158A (en) | 2019-08-16 |
| CN110124158B CN110124158B (en) | 2024-02-20 |
Family
ID=67579996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910478483.9A Active CN110124158B (en) | 2019-06-03 | 2019-06-03 | Reset assembly for syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110124158B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09225031A (en) * | 1996-02-28 | 1997-09-02 | Terumo Corp | Quantitative dispenser |
| CN101172177A (en) * | 2006-11-02 | 2008-05-07 | 贺长军 | Continuous injector injection regulating mechanism |
| CN201375732Y (en) * | 2009-04-03 | 2010-01-06 | 王军喜 | Electromagnetic type automatic needleless injector |
| CN201469817U (en) * | 2009-08-13 | 2010-05-19 | 王喜增 | Continuous injector |
| WO2017012432A1 (en) * | 2015-07-20 | 2017-01-26 | 山东新华安得医疗用品有限公司 | Sealed syringe |
| CN210494794U (en) * | 2019-06-03 | 2020-05-12 | 江苏丞宇米特医疗科技有限公司 | Reset assembly of syringe |
-
2019
- 2019-06-03 CN CN201910478483.9A patent/CN110124158B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09225031A (en) * | 1996-02-28 | 1997-09-02 | Terumo Corp | Quantitative dispenser |
| CN101172177A (en) * | 2006-11-02 | 2008-05-07 | 贺长军 | Continuous injector injection regulating mechanism |
| CN201375732Y (en) * | 2009-04-03 | 2010-01-06 | 王军喜 | Electromagnetic type automatic needleless injector |
| CN201469817U (en) * | 2009-08-13 | 2010-05-19 | 王喜增 | Continuous injector |
| WO2017012432A1 (en) * | 2015-07-20 | 2017-01-26 | 山东新华安得医疗用品有限公司 | Sealed syringe |
| CN210494794U (en) * | 2019-06-03 | 2020-05-12 | 江苏丞宇米特医疗科技有限公司 | Reset assembly of syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110124158B (en) | 2024-02-20 |
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