CN201020124Y - Steel needle retraction type safety self-destructing injector - Google Patents
Steel needle retraction type safety self-destructing injector Download PDFInfo
- Publication number
- CN201020124Y CN201020124Y CNU2007200497518U CN200720049751U CN201020124Y CN 201020124 Y CN201020124 Y CN 201020124Y CN U2007200497518 U CNU2007200497518 U CN U2007200497518U CN 200720049751 U CN200720049751 U CN 200720049751U CN 201020124 Y CN201020124 Y CN 201020124Y
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- China
- Prior art keywords
- needle stand
- needle
- injection
- injection tube
- interior
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- Expired - Fee Related
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Abstract
The utility model relates to a safe self-destruction injector that a steel needle can be drawn back into a syringe, comprising a syringe, a needle stand, an injection pole and a gum plug. The top of the injection pole gets through the gum plug. The utility model is characterized in that a steel needle drawback mechanism is arranged between the needle stand and the top of the injection pole; an internal needle holder is positioned in the steel needle drawback mechanism; the internal needle holder goes beyond the middle of the needle stand; the upper end of the internal needle holder is equipped with the steel needle, while a buckle is arranged between the lower end of the internal needle holder and the top of the injection pole. The buckle consists of an inverted cone connected with the internal needle holder and an internal clasp hole arranged on the top of the injection pole. The needle stand and the top of the syringe are connected by thread. A packing ring is positioned on the end face of the socket at the top of the syringe. With simple structure, moderate requirement for assembly and high pass rate of products, the utility model is applicable to stream line massive production.
Description
Technical field:
This utility model relates to a kind of self-destroyed syringe, can make the safe self-breaking syringe of steel needle retractable to the injection tube after especially a kind of use.
Background technology:
Cause the cross infection of virus for fear of using antihygienic syringe, disposable syringe is widely used at medical field.Reuse in order to stop artificial recovery, people are provided with self-desttruction equipment on disposable syringe.But,, causes common self-destruction syringe the cross infection of virus though preventing the repeated use of syringe to a certain extent, but syringe uses the back because draw point exposes and makes depleted syringe produce many inconvenience in processes such as collection, transportation, processing, still might stab medical worker and other relevant personnel, cause the infection of virus and bacteria.
Chinese patent once disclosed a kind of draw point pumpback formula syringe, described syringe is between draw point lower end and injection rod bayonet unit to be set, behind injecting liquid drug, injection rod is evacuated to draw point in the injection tube by bayonet unit, though this syringe can reach self-destruction and prevent the purpose that the draw point thorn is hurted sb.'s feelings, but because its needle stand adopts angle-inserting type to be connected with injection tube, and do not adopt sealing device in described junction, have assembly technology requirement height, easily cause shortcomings such as medicinal liquid seepage, product percent of pass be low to cause it.
Summary of the invention:
The purpose of this utility model is to overcome the weak point of the above draw point pumpback formula syringe, and a kind of its steel needle retractable safety self-destructing syringe that assembly technology requirement is low, medicinal liquid is non-leakage, product percent of pass is high is provided.
This utility model, comprise injection tube, be placed in the vertical needle stand of injection tube, be positioned at the injection rod of injection tube and place the vertical plug of injection rod, the top of injection rod penetrates described plug, between needle stand and injection rod top, the steel needle retractable device is set, described steel needle retractable device contains interior needle stand, interior needle stand places needle stand and passes needle stand, interior needle stand be axially arranged with tube for transfusion, the upper end installing draw point of interior needle stand, between the lower end of interior needle stand and injection rod top, bayonet unit is set, described bayonet unit constitutes by boring and be arranged at the vertical interior snap ring hole of injection rod with the agnail of interior needle stand disjunctor, above agnail awl dogging shoulder is set, the non-return ring on dogging shoulder and injection tube top is buckle mutually.
This utility model, the bottom of described needle stand is provided with external screw thread, and the injection tube top is provided with sleeve and interlayer screw thread, and needle stand is connected with the injection tube top by screw thread, also can on the telescopic end face in described injection tube top sealing ring be set.
The utlity model has good effect:
1, plug is passed in snap ring hole in injection rod top has and plug closely cooperates, and can be connected with the agnail awl buckle of interior needle stand lower end again, behind liquid medicine injection, interior needle stand and draw point can be returned in the injection tube, reaches safe effect.
2, thread connecting mode is adopted on needle stand and injection tube top, and on the telescopic end face in injection tube top, is provided with sealing ring.Because the sealing circle is positioned at needle stand, injection tube and needle stand three's intersection, plays between needle stand and the injection tube sealing function between needle stand and the interior needle stand.
This utility model has characteristics such as simple in structure,, product percent of pass height less demanding to assembly technology, is applicable to the streamline large-scale production.
Description of drawings:
Fig. 1, Fig. 2 are the structure principle chart of embodiment.
Fig. 3, Fig. 4 are embodiment work process sketch map.
Fig. 5 is the Q portion enlarged drawing of Fig. 2.
Among the figure, 1, needle guard 2, draw point 3, interior needle stand 31, tube for transfusion 32, top shoulder 33, agnail awl 34, filler chamber 4, needle stand 41, screw thread 5, sealing ring 6, plug 7, injection tube 71, interlayer screw thread 72, inner sleeve 73, non-return ring 8, injection rod 81, elastic joint 82, interior snap ring hole.
The specific embodiment:
Embodiment, with reference to accompanying drawing, a kind of steel needle retractable safety self-destructing syringe comprises injection tube 7, is placed in the vertical needle stand 4 of injection tube, is positioned at the injection rod 8 of injection tube and places the vertical plug 6 of injection rod, the top of injection rod penetrates described plug; Between needle stand and injection rod top, the steel needle retractable device is set, described steel needle retractable device contains interior needle stand 3, interior needle stand places needle stand and passes needle stand, interior needle stand be axially arranged with tube for transfusion 31, the upper end installing draw point 2 of interior needle stand, and at the upper end of interior needle stand filler chamber 34 is set, behind the installing draw point at this place's filler, with fixing draw point; Between the lower end of interior needle stand and injection rod top, bayonet unit is set, described bayonet unit by with the agnail awl 33 of interior needle stand 3 disjunctors and be arranged at injection rod vertical in snap ring hole 82 constitute; Above agnail awl 33 dogging shoulder 32 is set, the non-return ring 73 on dogging shoulder and injection tube top is buckle mutually.
Present embodiment, thread connecting mode is adopted on described needle stand and injection tube top: in the bottom of needle stand 4 external screw thread 41 is set, is provided with sleeve 72 and interlayer screw thread 71 on the injection tube top, needle stand is by being threaded in the top of injection tube.Simultaneously, on the end face of described injection tube top sleeve 72, be provided with sealing ring 5.
The using method and the operation principle of present embodiment are as follows:
When clinical use, the using method of syringe extracts medicinal liquid routinely, and also the using method of syringe is carried out injecting liquid drug routinely.Because the dogging shoulder 32 of needle stand 3 lower ends withstands the non-return ring 73 in the injection tube 3 in being arranged on, prevent to contract in the draw point 2, guarantee carrying out smoothly of injection work.After injection is finished, because the agnail of interior needle stand 3 lower ends awl 33 is buckled on the interior snap ring hole 82 on injection rod top (as shown in Figure 3), because dogging shoulder 32 is cydariform and tool elasticity, when injection rod down during pull, the effective width of dogging shoulder 32 is diminished, make it can pass through non-return ring 73, interior needle stand 3 can be returned in the injection tube together with draw point 2, reach the effect of safety and self-destruction.
Claims (3)
1. steel needle retractable safety self-destructing syringe, comprise injection tube (7), be placed in the vertical needle stand of injection tube (4), be positioned at the injection rod (8) of injection tube and place the vertical plug of injection rod (6), the top of injection rod penetrates described plug, it is characterized by: between needle stand and injection rod top, the steel needle retractable device is set, described steel needle retractable device contains interior needle stand (3), interior needle stand places needle stand and passes needle stand, interior needle stand be axially arranged with tube for transfusion (31), the upper end installing draw point (2) of interior needle stand, between the lower end of interior needle stand and injection rod top, bayonet unit is set, described bayonet unit constitutes by boring (33) with the agnail of interior needle stand disjunctor and being arranged at the vertical interior snap ring hole (82) of injection rod, above agnail awl dogging shoulder (32) is set, the non-return ring (73) on dogging shoulder and injection tube top is buckle mutually.
2. steel needle retractable safety self-destructing syringe according to claim 1 is characterized by: the bottom of described needle stand is provided with external screw thread (41), and the injection tube top is provided with sleeve (72) and interlayer screw thread (71), and needle stand is connected with the injection tube top by screw thread.
3. steel needle retractable safety self-destructing syringe according to claim 2 is characterized by: on the end face of described injection tube top sleeve (72), be provided with sealing ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200497518U CN201020124Y (en) | 2007-03-29 | 2007-03-29 | Steel needle retraction type safety self-destructing injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200497518U CN201020124Y (en) | 2007-03-29 | 2007-03-29 | Steel needle retraction type safety self-destructing injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201020124Y true CN201020124Y (en) | 2008-02-13 |
Family
ID=39087529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200497518U Expired - Fee Related CN201020124Y (en) | 2007-03-29 | 2007-03-29 | Steel needle retraction type safety self-destructing injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201020124Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118308A1 (en) * | 2016-01-08 | 2017-07-13 | 吕文进 | Safe syringe |
-
2007
- 2007-03-29 CN CNU2007200497518U patent/CN201020124Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118308A1 (en) * | 2016-01-08 | 2017-07-13 | 吕文进 | Safe syringe |
| CN106955399A (en) * | 2016-01-08 | 2017-07-18 | 吕文进 | Safety injector |
| KR20180095589A (en) * | 2016-01-08 | 2018-08-27 | 원-친 뤼 | Safety syringe |
| KR102203317B1 (en) * | 2016-01-08 | 2021-01-14 | 원-친 뤼 | Safety syringe |
| EP3400980B1 (en) * | 2016-01-08 | 2021-02-10 | LU, Wen-Chin | Safe syringe |
| US10918806B2 (en) | 2016-01-08 | 2021-02-16 | Wen-Chin Lu | Safe syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 Termination date: 20100329 |