CN102631729B - Disposable safety syringe - Google Patents
Disposable safety syringe Download PDFInfo
- Publication number
- CN102631729B CN102631729B CN201210112750.9A CN201210112750A CN102631729B CN 102631729 B CN102631729 B CN 102631729B CN 201210112750 A CN201210112750 A CN 201210112750A CN 102631729 B CN102631729 B CN 102631729B
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- China
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- core bar
- protective sleeve
- overcoat
- outer casing
- syringe
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Abstract
The invention belongs to the field of medical instruments with occupational protection functions, and particularly relates to a disposable safety syringe. The syringe comprises a core bar, an outer casing and a rubber plug, wherein the core bar is formed by connecting an upper core bar and a lower core bar through a plurality of injection molding pivots; the rubber plug is fixed at the top end of the upper core bar; a protective sleeve is sleeved at the exterior of the outer casing; the outer casing is connected with the protective sleeve through a locking mechanism; and an annular boss corresponding to the locking mechanism is arranged on the lower core bar. After the injection is finished, the upper core bar and the lower core bar can be separated by pushing the core bar; the locking mechanism of the outer casing and the protective sleeve can be unlocked; a syringe needle enters the protective sleeve completely by pulling the protective sleeve; the syringe needle is ensured to be unexposed so as to prevent puncture and cross-infection and ensure the safety performance of the syringe; a compression spring is arranged between the outer casing and the protective sleeve; the protective sleeve and a locking ring are driven to move downwards automatically by compressing the spring without pulling the protective sleeve manually, so that the syringe is convenient to operate; an annular clamping groove at the front end of the outer casing is capable of preventing the protective sleeve from completely falling off from the outer casing, so that the application effect is guaranteed.
Description
Technical field
The present invention relates to a kind of disposable use safety injector, belong to the medical instruments field of occupational protection function.
Background technology
China is as an injection big country, the behavior of middle non-security injection is very outstanding, what injection brought us is not only health, and what unsafe injection brought us is more injury, and shared disposable syringe has caused hepatitis B virus, HIV (human immunodeficiency virus) etc. in Chinese bamboo telegraph; Improper use injection needle, the injury that brings different crowd is innumerable especially.Medical worker because of the pathophorous danger of occupational infection haematogenous be general population 2-19 doubly, and 80% owing to pricking wound, as can be seen here, pricking wound is one of the most serious occupational risk factor of facing of current medical worker.China medical matters nursing staff is faced with intensive work every day, very arduous, should use safer medical supplies more easily, the chance coming to harm at work to reduce medical personnel.The harm that behavior produces for the mankind in view of unsafe injection, extensively promotes application safety injection new technique, can effectively reduce infectious disease incidence, promotes prevention of infectious disease work, reduces the heavy losses that various diseases causes to economy; Meanwhile, can reduce the non-security injection harm healthy to the public.In view of this, the application of safety injector is the inexorable trend of health care development.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: a kind of simple and reasonable, easy to use and disposable use safety injector that security performance is high is provided, can avoiding going out of use, draw point is stabbed and cross infection, the safety that guarantees to implement the medical personnel of injection operation and accept injector.
The technical solution adopted for the present invention to solve the technical problems is: described disposable use safety injector; comprise core bar, overcoat and plug; it is characterized in that: core bar is formed by connecting by several injection moulding fulcrums by upper core bar and lower core bar; plug is fixed on the top of core bar; the outer cover of overcoat has protective sleeve; overcoat is connected by locking mechanism with protective sleeve, and corresponding locking mechanism is provided with annular boss on lower core bar.
Under original state, overcoat is connected by locking mechanism with protective sleeve.While extracting medicinal liquid, pull core bar; During liquid medicine injection; promote core bar; when core bar is shifted bottom onto; liquid medicine injection shoots away; product structure resets into original state; then continue to apply certain power to core bar, the injection moulding fulcrum fracture of core bar, makes core bar separated with lower core bar two-part structure; lower core bar is taken advantage of a situation and is moved down certain distance; the annular boss of lower core bar is just by locking mechanism release, and now, overcoat and protective sleeve are no longer sealed; pull with hand protective sleeve; when the syringe needle at syringe top all enters protective sleeve, stop drag, syringe needle does not expose, and has therefore guaranteed the security performance of syringe.
Described locking mechanism is elasticity plastic retaining ring; retaining ring is elasticity plastic, and retaining ring inner side has buckle, and correspondence is buckled on overcoat and protective sleeve bayonet socket is set; the annular boss of lower core bar abuts against buckle top, and the external diameter of annular boss is identical with the external diameter of overcoat.Before syringe is used, the buckle of retaining ring blocks the bayonet socket of protective sleeve and overcoat; After injection; to core bar applied thrust; make core bar separated with lower core bar; lower core bar is taken advantage of a situation and is moved down, because the external diameter of annular boss is identical with the external diameter of overcoat, therefore; in lower core bar folding process; annular boss just ejects the buckle of retaining ring the bayonet socket of overcoat, locking mechanism release, and overcoat and protective sleeve are no longer sealed.
The front end of described overcoat is provided with annular slot.Inject completely, while pulling protective sleeve, by retaining ring, block the annular slot of overcoat, thereby prevent that protective sleeve from coming off completely.
Between the top of described overcoat and the inner top of protective sleeve, be provided with Compress Spring.After locking mechanism release; Compress Spring stretches under self elastic force effect, and automatic traction protective sleeve and retaining ring move down, and block the annular slot of overcoat in folding process by retaining ring; without manual operation, can make syringe needle include in protective sleeve, guarantee the security performance of syringe.
The hand-held baffle plate of arranged outside circular arc on described overcoat top.By this baffle plate, on the one hand, can facilitate medical personnel's hand syringes, on the other hand, can also avoid finger to encounter retaining ring, thereby guarantee the unlocking function of retaining ring.
The beneficial effect that the present invention has is:
Safety syringe is after injection, can upper core bar is separated with lower core bar by promoting core bar, and by the locking mechanism release of overcoat and protective sleeve, by pulling protective sleeve, make the syringe needle at syringe top all enter protective sleeve, guarantee that syringe needle does not expose, avoid thorn to injure cross infection, guaranteed the security performance of syringe; Between overcoat and protective sleeve, be provided with Compress Spring, by Compress Spring can automatic traction protective sleeve and retaining ring move down, without manually pulling protective sleeve, easy to operate; The annular slot of overcoat front end can prevent that protective sleeve from putting completely and coming off from outward, guarantees effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention under original state;
Fig. 2 is structural representation of the present invention while extracting medicinal liquid;
Fig. 3 is structural representation of the present invention under safe condition;
Fig. 4 is the structural representation of overcoat;
Fig. 5 is the left view of Fig. 4.
In figure: 1, lower core bar; 2, annular boss; 3, retaining ring; 4, buckle; 5, injection moulding fulcrum; 6, upper core bar; 7, protective sleeve; 8, overcoat; 9, annular slot; 10, plug; 11, Compress Spring; 12, syringe needle; 13, the hand-held baffle plate of circular arc.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described further:
As shown in Figures 1 to 3; disposable use safety injector; comprise core bar, overcoat 8 and plug 10; core bar is formed by connecting by several injection moulding fulcrums 5 by upper core bar 6 and lower core bar 1; plug 10 is fixed on the top of core bar 6; the outer cover of overcoat 8 has protective sleeve 7, and overcoat 8 is connected by locking mechanism with protective sleeve 7, and corresponding locking mechanism is provided with annular boss 2 on lower core bar 1.Wherein, locking mechanism is retaining ring 3, and retaining ring 3 is elasticity plastics; retaining ring 3 inner sides have buckle 4; corresponding buckle 4 arranges bayonet socket on overcoat 8 and protective sleeve 7, and the annular boss 2 of lower core bar 1 abuts against buckle 4 tops, and the external diameter of annular boss 2 is identical with the external diameter of overcoat 8.
Under original state, overcoat 8 is connected by locking mechanism with protective sleeve 7, and the buckle 4 of retaining ring 3 blocks the bayonet socket of protective sleeve 7 and overcoat 8, as shown in Figure 1.While extracting medicinal liquid, pull core bar, as shown in Figure 2; During liquid medicine injection; promote core bar; when core bar is shifted bottom onto; liquid medicine injection shoots away; product structure resets into original state; then continue to apply certain power to core bar; injection moulding fulcrum 5 fractures of core bar, make core bar 6 separated with lower core bar 1 two-part structure, and lower core bar 1 is taken advantage of a situation and moved down certain distance; because the external diameter of annular boss 2 is identical with the external diameter of overcoat 8; therefore,, in lower core bar 1 folding process, annular boss 2 just ejects the buckle of retaining ring 34 bayonet socket of overcoat 8; locking mechanism release, overcoat 8 is no longer sealed with protective sleeve 7.Now, pull with hand protective sleeve 7, when the syringe needle 12 at syringe top all enters protective sleeve 7, stop drag, syringe needle 12 does not expose, and has therefore guaranteed the security performance of syringe.
Wherein:
The hand-held baffle plate 13 of arranged outside circular arc on overcoat 8 tops.
In order to prevent that protective sleeve 7 comes off completely in drawing process, at the front end of overcoat 8, be provided with annular slot 9, by retaining ring 3, block the annular slot 9 of overcoat 8.
Except such scheme, can also between the top of overcoat 8 and the inner top of protective sleeve 7, be provided with Compress Spring 11.Like this; after locking mechanism release; Compress Spring 11 stretches under self elastic force effect; automatic traction protective sleeve 7 and retaining ring 3 move down; in folding process, by retaining ring 3, block the annular slot 9 of overcoat 8; without manual operation, can make syringe needle 12 include in protective sleeve 7, guarantee the security performance of syringe.
Claims (4)
1. a disposable use safety injector, comprise core bar, overcoat (8) and plug (10), it is characterized in that: core bar is formed by connecting by several injection moulding fulcrums (5) by upper core bar (6) and lower core bar (1), plug (10) is fixed on the top of core bar (6), the outer cover of overcoat (8) has protective sleeve (7), overcoat (8) is connected by locking mechanism with protective sleeve (7), and corresponding locking mechanism is provided with annular boss (2) on lower core bar (1);
Described locking mechanism is retaining ring (3); retaining ring (3) is elasticity plastic; retaining ring (3) inner side has buckle (4); corresponding buckle (4) arranges bayonet socket on overcoat (8) and protective sleeve (7); the annular boss (2) of lower core bar (1) abuts against buckle (4) top, and the external diameter of annular boss (2) is identical with the external diameter of overcoat (8).
2. disposable use safety injector according to claim 1, is characterized in that: the hand-held baffle plate of arranged outside circular arc (13) on described overcoat (8) top.
3. disposable use safety injector according to claim 1, is characterized in that: the front end of described overcoat (8) is provided with annular slot (9).
4. disposable use safety injector according to claim 3, is characterized in that: between the top of described overcoat (8) and the inner top of protective sleeve (7), be provided with Compress Spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112750.9A CN102631729B (en) | 2012-04-17 | 2012-04-17 | Disposable safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112750.9A CN102631729B (en) | 2012-04-17 | 2012-04-17 | Disposable safety syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102631729A CN102631729A (en) | 2012-08-15 |
| CN102631729B true CN102631729B (en) | 2014-03-26 |
Family
ID=46616413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210112750.9A Active CN102631729B (en) | 2012-04-17 | 2012-04-17 | Disposable safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102631729B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102961804B (en) * | 2012-11-30 | 2014-06-25 | 电白县康尔美生物科技有限公司 | Injector capable of repeatedly using boosting device and liquid storage device thereof |
| CN107773813B (en) * | 2016-08-31 | 2024-08-30 | 上海凯茂生物医药有限公司 | Prefilled preparation of erythropoietin injection with safety protection device |
| CN110893252A (en) | 2018-09-12 | 2020-03-20 | 普昂(杭州)医疗科技有限公司 | Active self-locking type injector |
| CN111790024A (en) * | 2019-04-07 | 2020-10-20 | 王剑飞 | Disposable puncture-proof syringe |
| CN113509618B (en) * | 2021-04-16 | 2024-07-26 | 山东安得医疗用品股份有限公司 | Quantitative self-destroying syringe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2678666Y (en) * | 2003-11-26 | 2005-02-16 | 吕海洋 | Disposable self-destroying safety syringe |
| CN200939281Y (en) * | 2006-08-15 | 2007-08-29 | 江西洪达医疗器械集团有限公司 | Disposable self-destroying safety syringe |
| CN202637617U (en) * | 2012-04-17 | 2013-01-02 | 山东新华安得医疗用品有限公司 | Disposable safety syringe |
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2012
- 2012-04-17 CN CN201210112750.9A patent/CN102631729B/en active Active
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| Publication number | Publication date |
|---|---|
| CN102631729A (en) | 2012-08-15 |
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Address after: 255086 No. 999, Zunxian Road, high tech Zone, Zibo City, Shandong Province Patentee after: Shandong ande medical supplies Co.,Ltd. Address before: No.77, North Road, development zone, high tech Zone, Zibo City, Shandong Province Patentee before: SHINVA ANDE HEALTHCARE APPARATUS Co.,Ltd. |
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| CP03 | Change of name, title or address |