CN201020108Y - Steel needle retraction type safety self-destructing injector - Google Patents
Steel needle retraction type safety self-destructing injector Download PDFInfo
- Publication number
- CN201020108Y CN201020108Y CNU2007200512700U CN200720051270U CN201020108Y CN 201020108 Y CN201020108 Y CN 201020108Y CN U2007200512700 U CNU2007200512700 U CN U2007200512700U CN 200720051270 U CN200720051270 U CN 200720051270U CN 201020108 Y CN201020108 Y CN 201020108Y
- Authority
- CN
- China
- Prior art keywords
- needle stand
- ring
- needle
- injection
- plug
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 67
- 238000002347 injection Methods 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 238000012856 packing Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 241000700605 Viruses Species 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a safe self-destruction injector that can draw the steel needle back into the syringe, comprising a syringe, a needle stand, an injection pole, a gum plug at the top of the injection pole, as the top of the injection pole penetrating through the gum plug, and a steel needle drawback mechanism comprising an internal needle holder arranged between the needle stand and the top of the injection pole. The internal needle holder, the upper end of which is equipped with a steel needle, is located through the inside of the needle stand. A convex ring is positioned at the lower part of the internal needle holder; a packing ring is arranged between the convex ring edge and the inside wall of the needle stand; a grab which is buckled with a snap ring hole at the tip of the injection pole is arranged at the bottom of the internal needle holder. The needle stand is connected with the top of the syringe via thread; a retarding ring, matching with the lower end face of the stand is arranged at the upper end of the syringe. Because of the simple structure, moderate requirement for assembly process and sound pass rate of product, the utility model is applicable to massive line 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.
In addition, in existing Disposable, self-destroying syringe, owing to use common plug, cause the medicine that residues in the injection tube after the medicine injection on the high side, do not meet prescription.
The utility model content:
Task of the present 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.
Another task of the present utility model is plug is improved, and makes the medicine that residues in the injection tube after its medicine injection meet relevant prescription.
This utility model, comprise injection tube, place the vertical needle stand of injection tube, be positioned at the injection rod of injection tube inside 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 comprises interior needle stand, interior needle stand places needle stand and passes needle stand, the upper end installing draw point of interior needle stand, bottom at interior needle stand is provided with bulge loop, between bulge loop periphery and needle stand inwall, be provided with sealing ring, lower end at interior needle stand is provided with grab, grab and the vertical snap ring of injection rod hole be buckle mutually, and needle stand is by being threaded in the injection tube top, on injection tube top, be provided with stop ring, stop ring and needle stand lower surface match.
This utility model can be in described on the outer wall of needle stand, and it is protruding to be provided with a plural number card, block protruding and the needle stand inwall is a frictional fit, and is certain, blocks protruding can the replacement by bulge loop.
This utility model, described plug adopts the elasticity plug, and the elasticity plug is by descending ring, medium ring and go up ring to constitute, following ring is that disjunctor is connected with medium ring, last ring is connected with medium ring by the elastic compression ring, on the axis hole of elasticity plug, is provided with the groove that is connected with the injection rod buckle.
The good effect that the utlity model has:
1, because the injection rod top is provided with the snap ring hole, passes plug and closely cooperate, can be connected with the grab 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, reach safe effect with plug.
2, thread connecting mode is adopted on needle stand and injection tube top, and on injection tube top, stop ring is set, and stop ring and needle stand lower surface match, and play the sealing function between needle stand and the injection tube.
3, on the outer wall of interior needle stand, it is protruding or bulge loop is set that a plural number card is set, and blocks protruding or bulge loop and needle stand inwall are frictional fit, on the one hand, internally needle stand plays the pipe positive interaction, in addition the aspect, the frictional resistance of needle stand and needle stand inwall prevents steel needle retractable phenomenon in the injection process in increasing.
4,, make the medicine that residues in the injection tube after its medicine injection meet relevant prescription because plug adopts the elasticity plug.
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 is the structure principle chart of existing plug; Fig. 2-Fig. 3 is the structure principle chart of embodiment 1 elasticity plug; Fig. 4-Fig. 7 is the structure principle chart of embodiment 2 steel needle retractable safety self-destructing syringes, and wherein, Fig. 5-Fig. 6 is the work process sketch map, and Fig. 7 is the Q portion enlarged drawing of Fig. 4.
Among the figure, 1, protruding 34, the filler chamber 4 of needle guard 2, draw point 3, interior needle stand 31, bulge loop 32, grab 33, card, outer needle stand 41, screw thread 5, sealing ring 6, plug 61, encircle 62 down, medium ring 63, on encircle 64, groove 65, compression ring 7, injection tube 71, screw thread 72, stop ring 8, injection rod 81, snap ring hole 82, end mistake piece 83, mouth fractures.
The specific embodiment:
With reference to Fig. 4-Fig. 7, this steel needle retractable safety self-destructing syringe, comprise injection tube 7, place the vertical needle stand 4 of injection tube, be positioned at the injection rod 8 of injection tube inside and place the vertical plug 6 of injection rod, plug adopts embodiment 1 described elasticity plug, the top of injection rod penetrates elasticity plug 6, between needle stand and injection rod top the steel needle retractable device is set.Described steel needle retractable device comprises interior needle stand 3, interior needle stand places needle stand and passes needle stand, the upper end installing draw point 2 of interior needle stand, in described on the outer wall of needle stand, be provided with a plural number card protruding 33, block and protrudingly match with the needle stand inwall, be provided with bulge loop 31 in the bottom of interior needle stand, be provided with sealing ring 5 between bulge loop periphery and needle stand inwall, be provided with grab 32 in the lower end of interior needle stand, grab and the vertical snap ring of injection rod hole 81 be buckle mutually, needle stand is by being threaded in the injection tube top, on injection tube top, be provided with stop ring 72, stop ring and needle stand lower surface match.
Using method and the operation principle of embodiment 2 are as follows:
When clinical use, at first remove the piece 82 by mistake that ends of injection rod bottom, the using method of syringe extracts medicinal liquid routinely then, and also the using method of syringe is carried out injecting liquid drug routinely.Because on the outer wall of interior needle stand, it is protruding 33 that a plural number card is set, and block protruding and needle stand inwall is frictional fit, increases the frictional resistance of interior needle stand and needle stand inwall, prevents steel needle retractable phenomenon in the injection process.When on inject Rhizoma Belamcandae 8 when making going up ring 63 and pushing up injection tube top of elasticity plug 6, finished the injection of medicine.After extracting draw point, inject Rhizoma Belamcandae 8 in the continuation, elasticity plug 6 is compressed at this moment, and the grab 32 until interior needle stand lower end is buckled on the vertical snap ring of the injection rod hole 81 (as shown in Figure 5), then, the injection rod 8 of pulling back, interior needle stand 3 and draw point 2 are returned in the injection tube, last, at mouthful 83 places that fracture of injection rod 8, injection rod is fractureed (as shown in Figure 6), reach draw point and accidentally injure the people and prevent the purpose that syringe is utilized once more.
Claims (3)
1. steel needle retractable safety self-destructing syringe, comprise injection tube (7), place the vertical needle stand of injection tube (4), be positioned at the injection rod (8) of injection tube inside and place the vertical plug of injection rod (6), the top of injection rod penetrates described plug, between needle stand and injection rod top, the steel needle retractable device is set, it is characterized by: described steel needle retractable device comprises interior needle stand (3), interior needle stand places needle stand and passes needle stand, the upper end installing draw point (2) of interior needle stand, be provided with bulge loop (31) in the bottom of interior needle stand, sealing ring (5) is set between bulge loop periphery and needle stand inwall, be provided with grab (32) in the lower end of interior needle stand, grab and the vertical snap ring of injection rod hole (81) be buckle mutually, and needle stand is by being threaded in the injection tube top, on injection tube top, be provided with stop ring (72), stop ring and needle stand lower surface match.
2. steel needle retractable safety self-destructing syringe according to claim 1 is characterized by: in described on the outer wall of needle stand, be provided with a plural number card protruding (33), block and protrudingly match with the needle stand inwall.
3. steel needle retractable safety self-destructing syringe according to claim 1 and 2, it is characterized by: described plug (6) is the elasticity plug, the elasticity plug is by ring (61), medium ring (62) and last ring (63) constitute down, following ring is that disjunctor is connected with medium ring, last ring is connected with medium ring by elastic compression ring (65), on the axis hole of elasticity plug, be provided with the groove (64) that is connected with the injection rod buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200512700U CN201020108Y (en) | 2007-05-03 | 2007-05-03 | Steel needle retraction type safety self-destructing injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200512700U CN201020108Y (en) | 2007-05-03 | 2007-05-03 | Steel needle retraction type safety self-destructing injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201020108Y true CN201020108Y (en) | 2008-02-13 |
Family
ID=39087513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200512700U Expired - Lifetime CN201020108Y (en) | 2007-05-03 | 2007-05-03 | Steel needle retraction type safety self-destructing injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201020108Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010006499A1 (en) * | 2008-07-14 | 2010-01-21 | Luo Xingyu | Sealed self-destructive one-off injector |
| CN106620968A (en) * | 2016-11-08 | 2017-05-10 | 沈挺 | Safe self-destruction syringe |
| CN112999468A (en) * | 2021-02-09 | 2021-06-22 | 上海康德莱医疗器械股份有限公司 | Safety syringe |
-
2007
- 2007-05-03 CN CNU2007200512700U patent/CN201020108Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010006499A1 (en) * | 2008-07-14 | 2010-01-21 | Luo Xingyu | Sealed self-destructive one-off injector |
| CN106620968A (en) * | 2016-11-08 | 2017-05-10 | 沈挺 | Safe self-destruction syringe |
| CN112999468A (en) * | 2021-02-09 | 2021-06-22 | 上海康德莱医疗器械股份有限公司 | Safety syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG HAIOU MEDICAL APPARATUS STOCK CO., LTD. Free format text: FORMER OWNER: LUO SHAOJI Effective date: 20120206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120206 Address after: 515300 Guangdong city of Jieyang province Puning City quicksand South West of the old school Zhacun Patentee after: Guangdong Haiou Medical Apparatus Stock Co., Ltd. Address before: 515300 Puning City, Guangdong Province, Ma sand Horse Industrial Zone, Puning City seagull Medical Equipment Co., Ltd. Patentee before: Luo Shaoji |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080213 |
|
| CX01 | Expiry of patent term |