CN104225724B - Valve-type prefilled syringe - Google Patents
Valve-type prefilled syringe Download PDFInfo
- Publication number
- CN104225724B CN104225724B CN201410477560.6A CN201410477560A CN104225724B CN 104225724 B CN104225724 B CN 104225724B CN 201410477560 A CN201410477560 A CN 201410477560A CN 104225724 B CN104225724 B CN 104225724B
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- CN
- China
- Prior art keywords
- needle
- needle holder
- injection port
- wall
- seat
- 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.)
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- 229940071643 prefilled syringe Drugs 0.000 title abstract 4
- 238000002347 injection Methods 0.000 claims abstract description 51
- 239000007924 injection Substances 0.000 claims abstract description 51
- 230000002787 reinforcement Effects 0.000 claims description 11
- 239000011229 interlayer Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JGSARLDLIJGVTE-UHFFFAOYSA-N 3,3-dimethyl-7-oxo-6-[(2-phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Chemical compound O=C1N2C(C(O)=O)C(C)(C)SC2C1NC(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-UHFFFAOYSA-N 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a valve-type prefilled syringe which comprises a needle (1) and a needle tube (2), wherein the front end of the needle tube (2) is also provided with a clamping ring base (7) which is arranged around an injection port base (4); the root of a needle base (3) is provided with a clamping ring (8); the clamping ring (8) is clamped in the clamping ring base (7); the needle base (3) is connected with the needle tube (2) by virtue of the clamping ring (8) and the clamping ring base (7). Compared with the prior art, the valve-type prefilled syringe has the advantages that the needle base is connected with the injection port base by virtue of the clamping ring, a through hole of the needle base is easily aligned with a slot of the injection port base, so that the valve-type prefilled syringe is convenient and free to close and open, is convenient, accurate and reliable in assembly and use, is easy to manufacture and has various indexes conforming to the pharmaceutical package specifications.
Description
Technical field
The present invention relates to medical packaging field, particularly pre-encapsulated injector.
Background technology
Pre-encapsulated injector can trace back to the Europe of the eighties in last century, and the most traditional ampoule, cillin bottle occupy leading position；
Now, reach 3,000,000,000 dollars by the pre-encapsulated injector of the needle tubing packaging storage medicament total value in European market, and kept
The growth of average annual about 8%-10%.Compared with European market, pre-encapsulated injector is relatively short in the developing history of the U.S., but increases
Prospect is the most optimistic.
The packaging that pre-encapsulated injector has stores medicament function, makes it have easy and simple to handle, quick, safety and low cost factor.
It addition, compared with the manner of packing of other injection medicine preparations, pre-encapsulated injector can substantially reduce to be obscured and air between medicine
The chance of contact；Along with more biological preparation and the exploitation of expensive drugs, pre-encapsulated injector can be decreased or even eliminated fill excess
Problem.
Existing pre-encapsulated injector includes the pre-encapsulated injector of band syringe needle, in order to prevent medicine for a long time in syringe needle with metal system
The syringe needle become reacts, and people have developed as disclosed in CN1138577C " injector carrying medicine ", and it includes syringe needle and pin
Pipe, the needle holder with interior spiral shell is spun on the syringe injection port seat with outer spiral shell, during injection, rotary needle headstock so that it is inwall
On straight-through syringe needle mesopore groove alignment injection port seat wall on hole, the valve between syringe needle and needle tubing opens, and medicinal liquid enters syringe needle,
I.e. it is ready for injection.
The defect of above-mentioned injector carrying medicine is: be connected owing to being turned by internal and external screw between needle holder with injection port seat, assembling or
When preparing injection, the groove of the straight-through syringe needle mesopore on needle holder inwall is difficult to the hole being directed on injection port seat wall, causes valve to close
Unlatching is difficult to determine, relatively deep for single cavity, groove in needle holder, the demoulding is yielding, and part quality is unstable, it is impossible to realize reliable producing
Product.The injection port seat length due to injection port seat external spiral superposition, makes liquor residue amount increase, and unlatching is with direct rotating needle
Seat mode completes, and the interference fit between needle holder and injection port seat so that it is it is painstaking to rotate, and easily causes contact stain.
Summary of the invention
The technical problem to be solved is: provide a kind of valve type pre-encapsulated injector, the valve of this valve type pre-encapsulated injector
Door Guan Bi opens convenient, accurately and reliably.
The present invention solves that the used solution of problem set forth above is:
Valve type pre-encapsulated injector, it includes syringe needle and needle tubing, and the root of syringe needle is provided with needle holder, and needle tubing front end is provided with injection port
Seat；Have through hole on the sidewall of injection port seat, the inwall of needle holder has and the groove of needle central pipe UNICOM；Needle holder is enclosed within
On injection port seat；
The front end of described needle tubing is additionally provided with retaining ring seat, and retaining ring seat is arranged around injection port seat, and the root of needle holder is provided with snap ring, card
Ring is stuck in retaining ring seat, and needle holder is connected with needle tubing by snap ring, retaining ring seat.
In such scheme, described needle holder is connected with injection port seat interference seal, needle holder inwall and the tapering of injection port seat outer wall
For 1-3 °；Interference seal stroke is 0.8-1mm.
In such scheme, the through hole of described injection port seat is two, and the groove on needle holder inwall is two；Outside described through hole it is
Outwardly toroidal, bell-mouthed tapering is 47-52 °.
In such scheme, the height of described snap ring is 0.5-1mm.
In such scheme, described needle holder being overlapped protected set, described needle holder outer wall is provided with reinforcement, the inwall of protection set
It is provided with the reinforcement groove coordinated with described reinforcement；It is additionally provided with positioning bar on needle holder outer wall, the inwall of protection set is additionally provided with
The positioning bar groove coordinated with positioning bar；
It is respectively equipped with, on the lower end inner wall of described protection set and on retaining ring seat outer wall, the folding positioning strip and folding positioning strip cooperated
Groove.
In such scheme, the bottom outer wall of described protection set has anti-skidding striped.
In such scheme, described valve type pre-encapsulated injector also includes the piston being arranged in needle tubing, in the front end surface of piston
It is provided with interlayer.
In such scheme, described interlayer is made up of the material identical with needle cannula material.
In such scheme, the inclined-plane that the bottom surface, lower end of the groove on described needle holder inwall skids off for ease of mould.
In such scheme, described protection set outer wall and needle tubing outer wall are respectively equipped with telltale mark.
Compared with prior art, it is an advantage of the current invention that:
1, the mode that the needle holder of prior art uses internal and external screw to enter with injection port seat is connected, when assembling or prepare injection, and syringe needle
The groove of the straight-through syringe needle mesopore on seat inwall is difficult to the hole being directed on mouth seat wall, causes valve Guan Bi to open uncertain, assembles and make
With the most inconvenient.
The needle holder of the present invention uses the mode of snap ring to be connected with injection port seat, and the through hole of needle holder is the most right with the groove of injection port seat
Will definitely lean on, Guan Bi opens convenient, and assembling is with easy to use and reliable.
2, in prior art, the groove on processing needle head seat inwall for convenience, technological requirement needle holder inwall and injection port seat outer wall
Having bigger tapering, interference seal stroke distances is too short, it is impossible to ensure to reliably seal.
Needle holder inwall of the present invention and injection port seat outer wall have less tapering, and needle holder inwall has the biggest at injection port seat
Interference stroke, it is ensured that described needle holder and injection port seat reliably seal.
3, in prior art, needle holder is single cavity, and groove is relatively deep, and the demoulding is yielding.
Owing to needle holder inwall has less tapering, during groove on processing needle head seat inwall, groove can not be made very deep, also
Must be provided with demoulding derivation groove conveniently stripped, therefore, the groove on needle holder inwall of the present invention is two, leading to of described injection port seat
Hole is two, to improve the flow of medicinal liquid.And the needle holder of the present invention uses double shallow slot and the demoulding to derive the groove demoulding, the demoulding is suitable
Freely, it is unlikely to cause scrapping because of deformation.
It addition, the through hole of described injection port seat is two, add man-hour, just utilize at through hole two root hole inner mould core injection port
The interior mould of seat is supported, and is avoided that the swing of interior mould during injection, improves machining accuracy.Two through holes are equipped with horn mouth chamfering,
To ensure not produce burr, cloak.
4, the height of described snap ring is 0.5-1mm, and needle holder inwall and injection port seat outer wall have less tapering, it is ensured that interference
Seal stroke distances and be more than 0.5-1mm, to facilitate needle holder to be stuck in retaining ring seat by snap ring, it is ensured that reliably seal.Existing skill
In art, the injection port seat length due to mouth seat external spiral superposition, make liquor residue amount increase, the present invention uses snap method to avoid
Increase mouth seat length, make liquor residue amount reduce.
5, in prior art, unlatching is to complete in direct rotary needle headstock mode, and the interference between needle holder and injection port seat is joined
Close so that it is it is painstaking to rotate, and easily causes contact stain.Protected set, described needle holder outer wall is overlapped on syringe needle of the present invention
Upper end is provided with positioning bar, and the inwall upper end of protection set is provided with the positioning bar groove coordinated with described rib, inlays location.In protection set
Wall lower end is provided with Guan Bi and opens rib, and described retaining ring seat outer wall is correspondingly provided with Guan Bi in it and opens muscle groove, forms turn-knob switch.Protect
Have anti-skidding striped on the bottom outer wall of sheath, the outer wall of protection set and needle tubing outer wall are marked with location mark, to the left or to the right
Rotate password protection sheath to 90 degree, protection set by reinforcement groove, reinforcement rotary needle headstock, needle holder rotate to UNICOM's needle tubing with
Needle position, the most free and relaxed also ensures that quick, health.
6, the front end surface of piston is provided with interlayer, and interlayer is made up of the material identical with needle cannula material, can substantially completely cut off medicinal liquid
With the contact of rubber on piston, reduce reaction possible between rubber and medicinal liquid.
The present invention is easily fabricated, indices all meets medical packaging specification.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation of needle tubing front end.
Fig. 3 is the structural representation of needle holder.
Fig. 4 is the sectional view of needle holder.
Fig. 5 is the sectional view of protection set.
Fig. 6 is the top view of needle holder.
Fig. 7 is the sectional view of piston.
Fig. 8 is the schematic diagram of protection set.
Fig. 9 is the schematic diagram of needle tubing.
In figure: 1-syringe needle, 2-needle tubing, 3-needle holder, 4-injection port seat, 5-through hole, 6-groove, 7-retaining ring seat, 8-snap ring, 9-
Protection set, 10-reinforcement, 11-reinforcement groove, the anti-skidding striped of 12-, 13-piston, 14-interlayer, 15-positioning bar, 16-positioning bar
Groove, 17-folding positioning strip, 18-folding positioning strip groove, 19-telltale mark.
Detailed description of the invention
It is further described the present invention below by embodiment, but embodiment will not be construed as limiting the invention.
Valve type pre-encapsulated injector embodiment of the present invention as shown in Figure 1, it includes syringe needle 1 and needle tubing 2, the root of syringe needle 1
Being provided with needle holder 3, needle tubing 2 front end is provided with injection port seat 4；Through hole 5 is had, needle holder 3 interior on the sidewall of injection port seat 4
Have on wall and the groove 6 of syringe needle 1 central canal UNICOM；Needle holder 3 is enclosed within injection port seat 4；
As shown in Figure 2,3, 4, the front end of described needle tubing 2 is additionally provided with retaining ring seat 7, and retaining ring seat 7 is arranged around injection port seat 4,
The root of needle holder 3 is provided with snap ring 8, and snap ring 8 is stuck in retaining ring seat 7, and needle holder 3 is by snap ring 8, retaining ring seat 7 and needle tubing
2 connect.The height of described snap ring 8 is 0.5-1mm.
Described needle holder 3 is connected with injection port seat 4 interference seal, and needle holder 3 inwall is 1-3 with the tapering of injection port seat outer wall
°.Interference seal stroke is 0.5-1mm.The through hole 5 of described injection port seat 4 is two, and the groove 6 on needle holder 3 inwall is
Article two,；A diameter of 0.8-1mm of described through hole 5, outside is outwardly toroidal, and bell-mouthed tapering is 47-52
°.As shown in Figure 4, the inclined-plane that the bottom surface, lower end of the groove 6 on described needle holder 3 inwall skids off for ease of mould.
Overlapping protected set 9 in described needle holder 3, as shown in Fig. 3,5,6, described needle holder 3 outer wall is provided with reinforcement 10,
The inwall of protection set 9 is provided with the reinforcement groove 11 coordinated with described reinforcement 10.It is additionally provided with positioning bar on needle holder 3 outer wall
15, the inwall of protection set 9 is additionally provided with the positioning bar groove 16 coordinated with positioning bar 15；
Such as Fig. 5, shown in 9, it is respectively equipped with, on the lower end inner wall of described protection set 9 and on retaining ring seat 7 outer wall, the folding cooperated
Positioning strip 17 and folding positioning strip groove 18.
Certainly, folding positioning bar groove 18 can also be arranged on the lower end inner wall of protection set 9, and folding positioning bar 17 is arranged on card
On ring seat 7 outer wall.
As shown in Figure 8,9, the bottom outer wall of described protection set 9 has anti-skidding striped 12.Described protection set 9 outer walls and pin
It is respectively equipped with telltale mark 19 on pipe 2 outer wall.
As it is shown in fig. 7, valve type pre-encapsulated injector also includes the piston 13 being arranged in needle tubing 2, the front end surface of piston 13
It is provided with interlayer 14.Described interlayer 14 is made up of the material (such as glass material etc.) identical with needle cannula material.
Claims (10)
1. valve type pre-encapsulated injector, it includes syringe needle (1) and needle tubing (2), and the root of syringe needle (1) is provided with needle holder (3),
Needle tubing (2) front end is provided with injection port seat (4)；Through hole (5) is had, needle holder (3) interior on the sidewall of injection port seat (4)
The groove (6) with syringe needle (1) central canal UNICOM is had on wall；Needle holder (3) is enclosed within injection port seat (4)；
It is characterized in that: the front end of described needle tubing (2) is additionally provided with retaining ring seat (7), retaining ring seat (7) is around injection port seat (4)
Arranging, the root of needle holder (3) is provided with snap ring (8), and snap ring (8) is stuck in retaining ring seat (7), and needle holder (3) is passed through
Snap ring (8), retaining ring seat (7) are connected with needle tubing (2).
2. valve type pre-encapsulated injector as claimed in claim 1, it is characterised in that: described needle holder (3) and injection port seat
(4) interference seal connects, and needle holder (3) inwall is 1-3 ° with the tapering of injection port seat outer wall；Interference seal stroke is
0.5-1mm。
3. valve type pre-encapsulated injector as claimed in claim 2, it is characterised in that: the through hole (5) of described injection port seat (4)
Being two, the groove (6) on needle holder (3) inwall is two；Described through hole (5) outside is outwardly toroidal,
Bell-mouthed tapering is 47-52 °.
4. valve type pre-encapsulated injector as claimed in claim 1, it is characterised in that: the height of described snap ring (8) is 0.5-1mm.
5. valve type pre-encapsulated injector as claimed in claim 1, it is characterised in that: the upper set of described needle holder (3) is protected
Set (9), described needle holder (3) outer wall is provided with reinforcement (10), and the inwall of protection set (9) is provided with and described reinforcement
(10) the reinforcement groove (11) coordinated；Positioning bar (15), the inwall of protection set (9) it is additionally provided with on needle holder (3) outer wall
On be additionally provided with the positioning bar groove (16) coordinated with positioning bar (15)；
It is respectively equipped with, on the lower end inner wall of described protection set (9) and on retaining ring seat (7) outer wall, the folding positioning strip (17) cooperated
With folding positioning strip groove (18).
6. valve type pre-encapsulated injector as claimed in claim 5, it is characterised in that: the bottom outer wall of described protection set (9)
On have anti-skidding striped (12).
7. valve type pre-encapsulated injector as claimed in claim 1, it is characterised in that: it also includes being arranged in needle tubing (2)
Piston (13), the front end surface of piston (13) is provided with interlayer (14).
8. valve type pre-encapsulated injector as claimed in claim 7, it is characterised in that: described interlayer (14) by with needle cannula material
Identical material is made.
9. valve type pre-encapsulated injector as claimed in claim 3, it is characterised in that: the groove on described needle holder (3) inwall
(6) inclined-plane that bottom surface, lower end skids off for ease of mould.
10. valve type pre-encapsulated injector as claimed in claim 5, it is characterised in that: described protection set (9) outer wall and needle tubing
(2) telltale mark (19) it is respectively equipped with on outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410477560.6A CN104225724B (en) | 2014-09-18 | 2014-09-18 | Valve-type prefilled syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410477560.6A CN104225724B (en) | 2014-09-18 | 2014-09-18 | Valve-type prefilled syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104225724A CN104225724A (en) | 2014-12-24 |
| CN104225724B true CN104225724B (en) | 2017-01-11 |
Family
ID=52215189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410477560.6A Active CN104225724B (en) | 2014-09-18 | 2014-09-18 | Valve-type prefilled syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104225724B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138577C (en) * | 1999-12-01 | 2004-02-18 | 巫晓林 | Injector carrying medicine |
| US7553294B2 (en) * | 2002-05-30 | 2009-06-30 | Medrad, Inc. | Syringe plunger sensing mechanism for a medical injector |
| JP2005296135A (en) * | 2004-04-07 | 2005-10-27 | Jms Co Ltd | Syringe with connector, connector for use in syringe, and syringe |
| US7666168B2 (en) * | 2004-11-05 | 2010-02-23 | Don Millerd | Syringe guard with selected needle configurations |
| CN202342609U (en) * | 2011-12-13 | 2012-07-25 | 山东威高集团医用高分子制品股份有限公司 | Protective cap for prefilled syringe |
| CN202844253U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Disposable pre-filled injector |
| CN103656799B (en) * | 2013-12-02 | 2016-09-07 | 贝普医疗科技有限公司 | Precharging type syringe |
-
2014
- 2014-09-18 CN CN201410477560.6A patent/CN104225724B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104225724A (en) | 2014-12-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20180502 Address after: 430073 Hubei Wuhan Hongshan District Optics Valley road 41 design city 2 buildings 18 floors 05 rooms. Patentee after: Wuhan Promotion Technology Co., Ltd. Address before: 430060 30A, 19 people's Hospital of Wuhan University, Wuchang District, Wuhan, Hubei. Patentee before: Wu Xiaolin |
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| TR01 | Transfer of patent right |