CN104759003A - Safety injector - Google Patents
Safety injector Download PDFInfo
- Publication number
- CN104759003A CN104759003A CN201510192021.2A CN201510192021A CN104759003A CN 104759003 A CN104759003 A CN 104759003A CN 201510192021 A CN201510192021 A CN 201510192021A CN 104759003 A CN104759003 A CN 104759003A
- Authority
- CN
- China
- Prior art keywords
- push rod
- overcoat
- spring
- screw socket
- 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.)
- Pending
Links
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
-
- 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
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
Abstract
The invention discloses a safety injector which comprises an outer sleeve, a push rod, a rubber plug and a screw opening. The outer sleeve is perpendicularly arranged, the push rod is inserted into the outer sleeve from a lower end opening of the outer sleeve, the rubber plug is arranged on the push rod in a sleeving mode and located in the outer sleeve, a rubber plug installing opening and a breakage notch are sequentially formed in the upper portion of the outer circumferential face of the push rod from top to bottom, and a push rod boss is arranged at the top end of the push rod. The screw opening is inserted into the outer sleeve from an upper end opening of the outer sleeve. The push rod boss is inserted into the screw opening from a lower end opening of the screw opening. The safety injector is simple in structure and convenient to operate, the shape damage effect on a used injector is obvious, and repeated use of the injector can be prevented.
Description
Technical field
The present invention relates to a kind of safety injector, belong to technical field of medical instruments.
Background technology
For avoiding cross infection, syringe is all generally disposable syringe, only use once, but overcoat and the screw socket of existing syringe are generally unitary design, such design has reversibility after a procedure, i.e. used syringe, after screw socket overlaps entry needle again, namely can be reused, infringement consumer health.
Summary of the invention
The object of the invention is the defect overcoming prior art, provide a kind of safety injector, structure is simple, easy to operate, overcoat and screw socket split-type design, obvious to the type effect of ruining of used syringe, and syringe can be prevented to be reused.
The technical scheme realizing above-mentioned purpose is: a kind of safety injector, comprise overcoat, push rod, plug and screw socket, described overcoat is vertically arranged, and described push rod is inserted in described overcoat from the lower ending opening of described overcoat, described plug to be set on described push rod and to be positioned at described overcoat, wherein:
The top of the outer peripheral face of described push rod sets gradually a plug installing port and from top to bottom and to fracture breach, and described plug is set on described plug installing port;
The top of described push rod arranges a push rod boss, described push rod boss is divided into upper and lower part, the upper and lower part of described push rod boss is one-body molded, the top of described push rod boss conically, the diameter of the lower surface on the top of described push rod boss is greater than the diameter of the upper surface of the bottom of described push rod boss, and the junction of the top of described push rod boss and the bottom of described push rod boss forms flange;
The bottom of the outer peripheral face of described screw socket is disposed with limit rib, anti-avulsion muscle and clamp button of the spring from top to bottom, the outer peripheral face of described screw socket and the junction of described clamp button of the spring form an inverted v-shaped groove, described clamp button of the spring is along the radial contraction of described screw socket, and the inside of described screw socket is provided with push rod claw;
Described screw socket is inserted in described overcoat from the upper end open of described overcoat, the inner peripheral surface of described overcoat is provided with the limit rib mounting groove matched with described limit rib, the inner peripheral surface of described overcoat is provided with the anti-avulsion muscle mounting groove matched with described anti-avulsion muscle, the inner peripheral surface of described overcoat is provided with the clamp button of the spring mounting groove matched with described clamp button of the spring, and described limit rib, anti-avulsion muscle and clamp button of the spring are connected in described limit rib mounting groove, anti-avulsion muscle mounting groove and clamp button of the spring mounting groove correspondingly;
Described push rod boss inserts in described screw socket from the lower ending opening of described screw socket, and described push rod boss is connected in described push rod claw, the top of described push rod boss is positioned at the top of described push rod claw, the bottom of described push rod boss is positioned at the inside of described push rod claw, and top and the described flange noncontact of described push rod claw are arranged.
Above-mentioned a kind of safety injector, wherein, the cross section of described plug is rectangular, and the upper surface of described plug is in the globoidal structure to lower recess, the lower surface of described plug is in the globoidal structure upwards caved in, the inner surface of described plug is in the globoidal structure outwards caved in, and the outer surface of described plug is in the globoidal structure caved inward.
Above-mentioned a kind of safety injector, wherein, described push rod claw is made up of four spring leafs, and described four spring leafs surround the structure of inner hollow.
Above-mentioned a kind of safety injector, wherein, described clamp button of the spring is connected with described clamp button of the spring mounting groove interference fit.
Above-mentioned a kind of safety injector, wherein, described anti-avulsion muscle semicircular in shape bulge-structure, described anti-avulsion muscle mounting groove semicircular in shape sunk structure.
Safety injector of the present invention, beneficial effect is compared with prior art: structure is simple, easy to operate; overcoat and screw socket split-type design; obvious to the type effect of ruining of used syringe, syringe can be prevented to be reused, to used syringe; retract in the lump together with screw socket during push rod rollback; product is ineffective, plays safe object, simultaneously; time push rod return back to last position, push rod fractures from the breach that fractures, and can play the effect of second protection.
Accompanying drawing explanation
Fig. 1 is the structure chart of safety injector of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is the enlarged drawing of the part B of Fig. 2;
Fig. 4 is the structure chart of the push rod of safety injector of the present invention;
Fig. 5 is the screw socket of safety injector of the present invention and the connection diagram of overcoat;
Fig. 6 is the cross-sectional view of the plug of safety injector of the present invention.
Detailed description of the invention
In order to make those skilled in the art can understand technical scheme of the present invention better, below in conjunction with accompanying drawing, its detailed description of the invention is described in detail:
Refer to Fig. 1 to Fig. 6, most preferred embodiment of the present invention. a kind of safety injector, comprise overcoat 1, push rod 2, plug 3 and screw socket 4, overcoat 1 is vertically arranged, push rod 2 is inserted in overcoat 1 from the lower ending opening of overcoat 1, plug 3 to be set on push rod 2 and to be positioned at overcoat 1, and screw socket 4 is inserted in overcoat 1 from the upper end open of overcoat 1.
Refer to Fig. 4 again, the top of the outer peripheral face of push rod 2 sets gradually a plug installing port 21 and from top to bottom and to fracture breach 22, and plug 3 is set on plug installing port 21; The top of push rod 2 arranges a push rod boss 23, push rod boss 23 is divided into upper and lower part 231,232, the upper and lower part of push rod boss 23 is one-body molded, the top 231 of push rod boss conically, the diameter of the lower surface on the top 231 of push rod boss is greater than the diameter of the upper surface of the bottom 232 of push rod boss, and the top 231 of push rod boss forms flange 24 with the junction of the bottom 232 of push rod boss.
Refer to Fig. 5 again, the bottom of the outer peripheral face of screw socket 4 is disposed with limit rib 41, anti-avulsion muscle 42 and clamp button of the spring 43 from top to bottom, the outer peripheral face of screw socket 4 and the junction of clamp button of the spring 43 form an inverted v-shaped groove 44, clamp button of the spring 43 is along the radial contraction of screw socket 4, and the inside of screw socket 4 is provided with push rod claw 45.
Refer to Fig. 5 again, screw socket 4 and overcoat 1 split-type design; Screw socket 4 is inserted in overcoat 1 from the upper end open of overcoat 1, the inner peripheral surface of overcoat 1 is provided with the limit rib mounting groove matched with limit rib 41, the inner peripheral surface of overcoat 1 is provided with the anti-avulsion muscle mounting groove matched with anti-avulsion muscle 42, the inner peripheral surface of overcoat 1 is provided with the clamp button of the spring mounting groove matched with clamp button of the spring 43, limit rib 41, anti-avulsion muscle 42 and clamp button of the spring 43 are connected in limit rib mounting groove, anti-avulsion muscle mounting groove and clamp button of the spring mounting groove correspondingly, and clamp button of the spring 43 is connected with clamp button of the spring mounting groove interference fit;
Screw socket 4 relies on clamp button of the spring 43 tight seal with the sealing of overcoat 1; Clamp button of the spring 43 forms inverted v-shaped groove 44 with the junction of the outer peripheral face of screw socket, makes clamp button of the spring 43 can realize shrinking in radial direction.The clamp button of the spring mounting groove interference fit of rear spring buckle 43 and overcoat 1 is assembled at screw socket 4 and overcoat 1, being subject to the contraction of external force rear spring buckle 43 is stuck in the corresponding clamp button of the spring mounting groove of overcoat 1, play sealing function, and do not reveal in 300kPa malleation, negative pressure 80kPa does not reveal.
Screw socket 4 is also designed with anti-avulsion muscle 42, anti-avulsion muscle 42 semicircular in shape bulge-structure, the anti-avulsion muscle mounting groove semicircular in shape sunk structure of overcoat 1 inner peripheral surface, after anti-avulsion muscle 42 and anti-avulsion muscle mounting groove assemble, a convex and recessed structure matches and screw socket 4 is fixed in overcoat 1, prevents screw socket 4 from deviating from from overcoat 1 when negative pressure 80kPa.
Screw socket 4 is also designed with limit rib 41, and the limit rib mounting groove with outer 1 coordinates and plays the spacing effect of screw socket 4, prevent screw socket 4 in internal pressure excessive or push rod 2 deviate from from overcoat 1 when injecting.
Consult Fig. 3 again, push rod boss 23 inserts in screw socket 4 from the lower ending opening of screw socket 4, and push rod boss 23 is connected in push rod claw 45, the top 231 of push rod boss 23 is positioned at the top of push rod claw 45, the bottom 231 of push rod boss 23 is positioned at the inside of push rod claw 45, and top and flange 24 noncontact of push rod claw 45 are arranged.
Refer to Fig. 6 again, the cross section of plug 3 is rectangular, and the upper surface 31 of plug 3 is in the globoidal structure to lower recess, the lower surface 32 of plug 3 is in the globoidal structure upwards caved in, the inner surface 33 of plug 3 is in the globoidal structure outwards caved in, the outer surface 34 of plug 3 is in the globoidal structure caved inward, this kind of plug 3 design can be that plug 3 plays sealing function on the basis of the very little magnitude of interference, really realize injection with low resistance, when on plug 3, lower surface 31, 32 when having a pressure differential, this kind of structure can ensure that plug 3 is pressed tighter and tighter under pressure, realize tightlyer about sealing.
Push rod claw 45 is made up of four spring leafs, four spring leafs surround the structure of inner hollow, define the structure can only entered and can not go out, be used for coordinating with push rod boss 23, when push rod 2 is injected, when push rod 2 is inserted into the top of overcoat 1 from the lower ending opening of overcoat 1, push rod boss 23 is inserted in push rod claw 45, push rod claw 45 first flicks at clamping, and related for push rod boss push rod is locked in the lump, makes push rod 2 and screw socket 4 become one.During push rod 2 rollback, retract in the lump together with screw socket 4, if be furnished with entry needle, entry needle is contained on screw socket 4 and also retracts in the lump.Make syringe products ineffective, play safe object.Time push rod 2 forgets about it last position, push away, 2 fracture from the breach 22 that fractures, and play the effect of second protection.
Safety injector of the present invention, structure is simple, easy to operate; overcoat and screw socket split-type design; obvious to the type effect of ruining of used syringe, syringe can be prevented to be reused, to used syringe; retract in the lump together with screw socket during push rod rollback; product is ineffective, plays safe object, simultaneously; time push rod return back to last position, push rod fractures from the breach that fractures, and can play the effect of second protection.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, all will drop in Claims scope of the present invention the change of the above embodiment, modification.
Claims (5)
1. a safety injector, comprises overcoat, push rod, plug and screw socket, and described overcoat is vertically arranged, and described push rod is inserted in described overcoat from the lower ending opening of described overcoat, and described plug to be set on described push rod and to be positioned at described overcoat, it is characterized in that,
The top of the outer peripheral face of described push rod sets gradually a plug installing port and from top to bottom and to fracture breach, and described plug is set on described plug installing port;
The top of described push rod arranges a push rod boss, described push rod boss is divided into upper and lower part, the upper and lower part of described push rod boss is one-body molded, the top of described push rod boss conically, the diameter of the lower surface on the top of described push rod boss is greater than the diameter of the upper surface of the bottom of described push rod boss, and the junction of the top of described push rod boss and the bottom of described push rod boss forms flange;
The bottom of the outer peripheral face of described screw socket is disposed with limit rib, anti-avulsion muscle and clamp button of the spring from top to bottom, the outer peripheral face of described screw socket and the junction of described clamp button of the spring form an inverted v-shaped groove, described clamp button of the spring is along the radial contraction of described screw socket, and the inside of described screw socket is provided with push rod claw;
Described screw socket is inserted in described overcoat from the upper end open of described overcoat, the inner peripheral surface of described overcoat is provided with the limit rib mounting groove matched with described limit rib, the inner peripheral surface of described overcoat is provided with the anti-avulsion muscle mounting groove matched with described anti-avulsion muscle, the inner peripheral surface of described overcoat is provided with the clamp button of the spring mounting groove matched with described clamp button of the spring, and described limit rib, anti-avulsion muscle and clamp button of the spring are connected in described limit rib mounting groove, anti-avulsion muscle mounting groove and clamp button of the spring mounting groove correspondingly;
Described push rod boss inserts in described screw socket from the lower ending opening of described screw socket, and described push rod boss is connected in described push rod claw, the top of described push rod boss is positioned at the top of described push rod claw, the bottom of described push rod boss is positioned at the inside of described push rod claw, and top and the described flange noncontact of described push rod claw are arranged.
2. a kind of safety injector according to claim 1, it is characterized in that, the cross section of described plug is rectangular, and the upper surface of described plug is in the globoidal structure to lower recess, the lower surface of described plug is in the globoidal structure upwards caved in, the inner surface of described plug is in the globoidal structure outwards caved in, and the outer surface of described plug is in the globoidal structure caved inward.
3. a kind of safety injector according to claim 1, is characterized in that, described push rod claw is made up of four spring leafs, and described four spring leafs surround the structure of inner hollow.
4. a kind of safety injector according to claim 1, is characterized in that, described clamp button of the spring is connected with described clamp button of the spring mounting groove interference fit.
5. a kind of safety injector according to claim 1, is characterized in that, described anti-avulsion muscle semicircular in shape bulge-structure, described anti-avulsion muscle mounting groove semicircular in shape sunk structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192021.2A CN104759003A (en) | 2015-04-21 | 2015-04-21 | Safety injector |
| PCT/CN2015/086704 WO2016169156A1 (en) | 2015-04-21 | 2015-08-12 | Safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192021.2A CN104759003A (en) | 2015-04-21 | 2015-04-21 | Safety injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104759003A true CN104759003A (en) | 2015-07-08 |
Family
ID=53641307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510192021.2A Pending CN104759003A (en) | 2015-04-21 | 2015-04-21 | Safety injector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104759003A (en) |
| WO (1) | WO2016169156A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169156A1 (en) * | 2015-04-21 | 2016-10-27 | 上海康德莱企业发展集团医疗器械有限公司 | Safety injector |
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| US20040006315A1 (en) * | 2002-07-08 | 2004-01-08 | Pi-Chang Lo | Syringe structure |
| CN201441705U (en) * | 2009-04-01 | 2010-04-28 | 湖南平安医疗器械有限公司 | Low-resistance syringe plunger |
| CN103372250A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Back-pulling type safety self-locking self-destroying syringe |
| CN103463713A (en) * | 2012-06-06 | 2013-12-25 | 上海萌黎国际贸易有限公司 | Disposable syringe and push rod for disposable syringe |
| CN204017037U (en) * | 2014-08-28 | 2014-12-17 | 江波 | The syringe core rod of lower resistance |
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| CN204745212U (en) * | 2015-04-21 | 2015-11-11 | 上海康德莱企业发展集团医疗器械有限公司 | Safety syringe |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6752784B2 (en) * | 2002-07-30 | 2004-06-22 | Hsi-Chin Tsai | Labor efficient safety syringe |
| US20040049160A1 (en) * | 2002-09-10 | 2004-03-11 | Chung-Chieh Hsieh | Safety hypodermic syringe |
| CN2877736Y (en) * | 2005-11-30 | 2007-03-14 | 江苏康友医用器械有限公司 | Disposable self-destroyable safety syringe |
| CN2880122Y (en) * | 2006-01-26 | 2007-03-21 | 上海麦得可医疗器械销售有限公司 | Safety self-distruction type injuctor capable of changing needle |
| CN201481924U (en) * | 2009-09-10 | 2010-05-26 | 莫山仁 | Disposable self-destruction syringe |
| CN203954344U (en) * | 2013-10-25 | 2014-11-26 | 喜来驰那私人有限公司 | Retractable syringe |
| CN104759003A (en) * | 2015-04-21 | 2015-07-08 | 上海康德莱企业发展集团医疗器械有限公司 | Safety injector |
-
2015
- 2015-04-21 CN CN201510192021.2A patent/CN104759003A/en active Pending
- 2015-08-12 WO PCT/CN2015/086704 patent/WO2016169156A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040006315A1 (en) * | 2002-07-08 | 2004-01-08 | Pi-Chang Lo | Syringe structure |
| CN201441705U (en) * | 2009-04-01 | 2010-04-28 | 湖南平安医疗器械有限公司 | Low-resistance syringe plunger |
| CN103372250A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Back-pulling type safety self-locking self-destroying syringe |
| CN103463713A (en) * | 2012-06-06 | 2013-12-25 | 上海萌黎国际贸易有限公司 | Disposable syringe and push rod for disposable syringe |
| CN104519932A (en) * | 2013-03-04 | 2015-04-15 | 有限会社工机工程 | Piston member for syringe |
| CN204017037U (en) * | 2014-08-28 | 2014-12-17 | 江波 | The syringe core rod of lower resistance |
| CN204745212U (en) * | 2015-04-21 | 2015-11-11 | 上海康德莱企业发展集团医疗器械有限公司 | Safety syringe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169156A1 (en) * | 2015-04-21 | 2016-10-27 | 上海康德莱企业发展集团医疗器械有限公司 | Safety injector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016169156A1 (en) | 2016-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201812 Jinyuan Road No. 925, Jiading District, Shanghai City, 2 Applicant after: SHANGHAI KINDLY MEDICAL INSTRUMENTS Co.,Ltd. Address before: No. 658, Jiading District, Shanghai, Shanghai Applicant before: SHANGHAI KINDLY ENTERPRISE DEVELOPMENT GROUP MEDICAL INSTRUMENTS Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150708 |
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| RJ01 | Rejection of invention patent application after publication |