CN201744031U - Disposable retractable syringe - Google Patents
Disposable retractable syringe Download PDFInfo
- Publication number
- CN201744031U CN201744031U CN2010202850915U CN201020285091U CN201744031U CN 201744031 U CN201744031 U CN 201744031U CN 2010202850915 U CN2010202850915 U CN 2010202850915U CN 201020285091 U CN201020285091 U CN 201020285091U CN 201744031 U CN201744031 U CN 201744031U
- Authority
- CN
- China
- Prior art keywords
- seat
- push rod
- overcoat
- wall
- supporting 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.)
- Expired - Lifetime
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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
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disposable retractable syringe, which comprises an outer sleeve, a spacing collar, a needle bed, a push rod and a rubber plug, wherein a circle of draw hook is arranged at the lower part of a conical head of the push rod; the needle bed comprises a conical seat and a supporting seat; two elastic clamping lugs are arranged on the outer wall at the lower part of the conical seat; a groove is formed in an inner hole at the lower part of the conical seat; a flange with the external diameter in friction fit with the diameter of the groove of the conical seat is arranged on the outer wall at the top of the supporting seat; a convex ring with an inclined upper end surface is arranged on the lower inner wall of the outer sleeve; a spacing groove positioned below the convex ring is formed at the bottom of the outer sleeve; adaptive clamping grooves are formed on the upper inner wall of the outer sleeve at the parts corresponding to the clamping lugs of the conical seat; a plurality of elastic thorns are uniformly distributed on the push rod; the spacing collar is arranged in the spacing groove of the outer sleeve; and a convex ring with the external diameter in friction fit with the diameter of the spacing groove of the outer sleeve is arranged on the upper outer wall of the spacing collar. In the disposable retractable syringe, the needle head can be retracted into the outer sleeve after finishing the injection, and the syringe is destructed with the of break of the push rod.
Description
Technical field
This utility model relates to a kind of syringe, is specifically related to a kind of disposable use haulback type syringe.
Background technology
Since using disposable medical instrument, a large amount of depleted apparatuses bring problem of environment pollution caused, and the band pin apparatus after using is often stabbed medical personnel, cause the patient on one's body with virus or antibacterial along with used medical apparatus and instruments infects to medical personnel, thereby cause medical personnel to catch an illness even dead.At present, because the sensitivity of acquired immune deficiency syndrome (AIDS), hepatitis and other serious hematologic disease, the problem of accidental needle sticks comes into one's own day by day.This shows that the medical personnel that the syringe needle of band pin apparatus is stabbed have very big danger.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of disposable use haulback type syringe is provided, it can make syringe needle be withdrawn in the overcoat after injection finishes, and can realize the disconnection of push rod and destroy, fundamentally stopped the repeated use of syringe, the while also is convenient to the carrying of syringe rubbish and destroys.
The technical scheme that realizes above-mentioned purpose is: a kind of disposable use haulback type syringe, comprise that hollow overcoat, is installed in needle stand and that the spacing collar of jacket bottom, is installed in the overcoat head and is installed in push rod in the overcoat, top suit one plug of described push rod, described push rod has conical head, the bottom of this conical head is provided with a circle drag hook, described needle stand is made of separable awl seat and supporting seat, is provided with sealing ring between the outer wall of described awl seat and the inwall of described overcoat.Wherein:
The bottom outer wall of described awl seat is provided with several elasticity screens ears, is provided with a groove in the bottom endoporus of described awl seat;
The top of described supporting seat is the pipe of equal diameters of the bottom endoporus of an external diameter and described awl seat, and the inwall of bottom extends downwards with the conical surface, and the outer wall of bottom extends downwards with the step and the conical surface successively; The external wall of upper portion height of described supporting seat equates greater than its underpart outer wall height and with the bottom endoporus height of described awl seat; The top inner wall of described supporting seat is provided with a plurality of elastic pawls that can fasten with the drag hook on the described push rod; The top exterior walls of described supporting seat is provided with a flange, and the groove diameter of the external diameter of this flange and described awl seat is frictional fit movably;
The lower inner wall of described overcoat is provided with a bulge loop, and the upper surface of this bulge loop is the inclined-plane, and the bottom of described overcoat is provided with a stopper slot that is positioned at described bulge loop below; The upper inside wall of described overcoat is provided with adaptive screens groove at the position of the screens ear of corresponding described awl seat;
The top of described push rod is provided with upper and lower collar, and the upper surface of this time collar is laid with some Spina jujubae;
Described spacing collar is located in the stopper slot of described overcoat, and the internal diameter of spacing collar and the external diameter of described push rod be frictional fit movably, and the top exterior walls of spacing collar is provided with a protruding circle, and the diameter of the external diameter of this protruding circle and the stopper slot of described overcoat is frictional fit movably;
The height sum of the protruding circle on the height of the following collar on the described push rod and the height of Spina jujubae and the described spacing collar is smaller or equal to the height of the described outer stopper slot that puts;
Described supporting seat is installed in the bottom endoporus of described awl seat, the groove upper surface of the flange upper surface of described supporting seat and described awl seat is butt mutually, the lower surface of the outer wall step surface of described supporting seat bottom and described awl seat is butt mutually, and the lower surface of the screens ear of the outer wall conical surface of described supporting seat bottom and described awl is butt mutually; The flange lower surface of described supporting seat when described supporting seat is moved down into lower dead center and the groove lower surface of described awl seat fasten.
Above-mentioned disposable use haulback type syringe, wherein, the screens ear of described awl seat can open and shrink, when opening and the described outer screens groove engagement that puts, make described awl seat be fixed on described outer putting, break away from engagement with described overcoat during contraction, make a described awl described overcoat of disengaging.
Above-mentioned disposable use haulback type syringe, wherein, described awl seat adopts Rule circular cone or has Rule circular cone of screw socket seat.
Above-mentioned disposable use haulback type syringe, wherein, described plug is enclosed within the top of the last collar of described push rod.
Above-mentioned disposable use haulback type syringe, wherein, the middle part of described push rod is provided with one and twists off a little.
The technical scheme of disposable use haulback type syringe of the present utility model, the needle stand that employing is made of separable awl seat and supporting seat, and on the awl seat, set up elasticity screens ear, on supporting seat, set up elastic pawl, on push rod, set up drag hook, set up sealing ring between needle stand and overcoat, guaranteeing can leakage.When injection finishes, pull back behind the push rod, can be by the snap action of drag hook on the push rod and the elastic pawl on the supporting seat, needle stand and syringe needle towed back to and locked in overcoat, syringe can't be reused, really reached the self-destruction purpose, and can realize the disconnection of push rod and destroy, fundamentally stopped the repeated use of syringe, simultaneously locked syringe needle in overcoat can avoid stabbing medical personnel, also is convenient to the carrying of syringe rubbish and destroys.
Description of drawings
Fig. 1 is the profile of disposable use haulback type syringe of the present utility model;
Fig. 2 is the enlarged drawing of aminoacyl site among Fig. 1;
Fig. 3 is the structural representation of the awl seat in the disposable use haulback type syringe of the present utility model;
Fig. 4 is the structural representation of the supporting seat in the disposable use haulback type syringe of the present utility model;
Fig. 5 is the structural representation of the push rod in the disposable use haulback type syringe of the present utility model;
Fig. 6 is the structural representation of the overcoat in the disposable use haulback type syringe of the present utility model;
Fig. 7 is the state diagram after disposable use haulback type syringe drawing liquid of the present utility model finishes;
Fig. 8 is the state diagram after disposable use haulback type injector to inject of the present utility model finishes;
Fig. 9 is the state diagram after the needle stand of disposable use haulback type syringe of the present utility model bounces back.
The specific embodiment
In order to understand the technical solution of the utility model better, also be described in detail in conjunction with the accompanying drawings below by specific embodiment:
See also Fig. 1 and Fig. 2, disposable use haulback type syringe of the present utility model comprises that needle stand 3, that spacing collar 2, that hollow overcoat 1, is installed in overcoat 1 bottom is installed in overcoat 1 head is installed in push rod 4 and in the overcoat 1 and is installed in plug 5 on the push rod 4.
The top of supporting seat 32 is an external diameter and the pipe 321 of the equal diameters of the bottom endoporus of awl seat 31, and the inwall of bottom 322 extends downwards with the conical surface, and the outer wall of bottom extends (see figure 4)s downwards with the step 323 and the conical surface 324 successively; The external wall of upper portion height of supporting seat 32 equates greater than its underpart outer wall height and with the bottom endoporus height of awl seat 31; The top inner wall of supporting seat 32 is provided with a plurality of elastic pawls 325 that can fasten with the drag hook 42 on the push rod 4; The top exterior walls of supporting seat 32 is provided with a flange 326, and groove 314 diameters of the external diameter of this flange 326 and awl seat 31 are frictional fit movably.
The lower inner wall of overcoat 1 (see figure 6) is provided with a bulge loop 11, and the upper surface of this bulge loop 11 is the inclined-plane; The bottom of overcoat 1 is provided with a stopper slot 12 that is positioned at bulge loop 11 belows; The upper inside wall of this overcoat 1 is provided with adaptive screens groove 13 at the position of the screens ear 313 of corresponding awl seat 31.
The height sum of the protruding circle 21 on the height of the following collar 44 on the push rod 4 and the height of Spina jujubae 45 and the spacing collar 2 is smaller or equal to the height of the stopper slot on the overcoat 1 12;
Supporting seat 32 is installed in the bottom endoporus of awl seat 31, flange 326 upper surfaces of supporting seat 32 and bore seat 31 groove 314 upper surfaces are butt mutually, the lower surface of the upper surface of the outer wall step 323 of supporting seat 32 bottoms and awl seat 31 is butt mutually, and the lower surface of the screens ear 313 of the outer wall conical surface 324 of supporting seat 32 bottoms and awl 31 is butt mutually; Awl seat 31 is installed in the endoporus of overcoat 1, its two elasticity screens ears 313 are stuck in two screens grooves 13 of overcoat 1, the screens ear 313 that to bore seat 31 by step 323 outside wall surface of supporting seat 32 expands outwardly again, makes awl seat 31 fix up and down in overcoat 1 and can not be shifted.Screens ear 313 on the awl seat 31 can open and shrink, and screens groove 13 engagements when opening and on the overcoat 1 are fixed on the overcoat 1 awl seat 31, break away from engagement with overcoat 1 during contraction, makes to bore 31 a disengaging overcoat 1.
See also Fig. 1, Fig. 7, Fig. 8 and Fig. 9 again, the using method of disposable use haulback type syringe of the present utility model is: what Fig. 1 showed is the untapped state diagram of syringe.Fig. 7 is the state diagram that the syringe drawing liquid finishes.When syringe in when injection, the conical head 41 of push rod 4 can squeeze the endoporus of opening the elastic pawl 325 of supporting seat 32 and entering supporting seat 32 easily along with upwards promoting of push rod 4, when injection finishes, the upper surface of the plug 5 on push rod 4 tops just in time with 322 butts of lower inner wall of supporting seat 32, and the drag hook 42 on push rod 4 tops is positioned on the elastic pawl 325, can drag hook 42 is stuck during elastic pawl 325 retractions; Spur push rod 4 subsequently downwards, push rod 4 will drive supporting seat 32 and move downward, and awl seat 31 does not move, flange 326 lower surfaces up to supporting seat 32 fasten with groove 314 lower surfaces of boring seat 31, the medial surface that bore the screens ear 313 of seat 31 this moment separates with lower step 323 outside wall surface of supporting seat 32, screens ear 313 has just broken away from the screens groove 13 of overcoat to the space, pipe 321 position of supporting seat 32 youngster of rebounding, 31 of awl seats lean on the frictional resistance between " O " RunddichtringO 6 and overcoat 1 inwall to support, be not enough to the power that support operation person spurs push rod 4, awl seat 31 is moved downward under the drive of supporting seat 32, run into the bulge loop 11 of overcoat 1 bottom when the following collar 44 of push rod 4, because the upper surface of bulge loop 11 is the inclined-plane, last collar 44 can continue to move downward the below of bulge loop 11 and limited circle 2 blocks, thereby driving spacing collar 2 moves downward, blocked by the lower surface of the stopper slot on the overcoat 1 12 up to the protruding circle 21 on the spacing collar 2, Spina jujubae 45 on the push rod 4 also is positioned at bulge loop 11 belows of overcoat 1 and is blocked by the lower surface of bulge loop 11, push rod 4 can not be advanced to pull out and locked in overcoat 1, and this moment, syringe needle 7 was retracted in the overcoat 1 fully, realized the retraction self-destruction of syringe needle 7.Can slightly firmly just can twist off push rod 4 at easy breakpoint 46 places of push rod 4 at last, reach the self-destruction purpose of push rod 4.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating this utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (5)
1. disposable use haulback type syringe, comprise that hollow overcoat, is installed in needle stand and that the spacing collar of jacket bottom, is installed in the overcoat head and is installed in push rod in the overcoat, top suit one plug of described push rod, described push rod has conical head, the bottom of this conical head is provided with a circle drag hook, and described needle stand is made of separable awl seat and supporting seat, is provided with sealing ring between the outer wall of described awl seat and the inwall of described overcoat, it is characterized in that
The bottom outer wall of described awl seat is provided with several elasticity screens ears, is provided with a groove in the bottom endoporus of described awl seat;
The top of described supporting seat is the pipe of equal diameters of the bottom endoporus of an external diameter and described awl seat, and the inwall of bottom extends downwards with the conical surface, and the outer wall of bottom extends downwards with the step and the conical surface successively; The external wall of upper portion height of described supporting seat equates greater than its underpart outer wall height and with the bottom endoporus height of described awl seat; The top inner wall of described supporting seat is provided with a plurality of elastic pawls that can fasten with the drag hook on the described push rod; The top exterior walls of described supporting seat is provided with a flange, and the groove diameter of the external diameter of this flange and described awl seat is frictional fit movably;
The lower inner wall of described overcoat is provided with a bulge loop, and the upper surface of this bulge loop is the inclined-plane, and the bottom of described overcoat is provided with a stopper slot that is positioned at described bulge loop below; The upper inside wall of described overcoat is provided with adaptive screens groove at the position of the screens ear of corresponding described awl seat;
The top of described push rod is provided with upper and lower collar, and the upper surface of this time collar is laid with some Spina jujubae;
Described spacing collar is located in the stopper slot of described overcoat, and the internal diameter of spacing collar and the external diameter of described push rod be frictional fit movably, and the top exterior walls of spacing collar is provided with a protruding circle, and the diameter of the external diameter of this protruding circle and the stopper slot of described overcoat is frictional fit movably;
The height sum of the protruding circle on the height of the following collar on the described push rod and the height of Spina jujubae and the described spacing collar is smaller or equal to the height of the described outer stopper slot that puts;
Described supporting seat is installed in the bottom endoporus of described awl seat, the groove upper surface of the flange upper surface of described supporting seat and described awl seat is butt mutually, the lower surface of the outer wall step surface of described supporting seat bottom and described awl seat is butt mutually, and the lower surface of the screens ear of the outer wall conical surface of described supporting seat bottom and described awl is butt mutually; The flange lower surface of described supporting seat when described supporting seat is moved down into lower dead center and the groove lower surface of described awl seat fasten.
2. disposable use haulback type syringe according to claim 1, it is characterized in that, the screens ear of described awl seat can open and shrink, when opening and the described outer screens groove engagement that puts, make described awl seat be fixed on described outer putting, during contraction and described overcoat break away from engagement, make the described overcoat of described awl seat disengaging.
3. disposable use haulback type syringe according to claim 1 is characterized in that, described awl seat adopts Rule circular cone or has Rule circular cone of screw socket seat.
4. disposable use haulback type syringe according to claim 1 is characterized in that described plug is enclosed within the top of the last collar of described push rod.
5. disposable use haulback type syringe according to claim 1 is characterized in that the middle part of described push rod is provided with one and twists off a little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202850915U CN201744031U (en) | 2010-08-06 | 2010-08-06 | Disposable retractable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202850915U CN201744031U (en) | 2010-08-06 | 2010-08-06 | Disposable retractable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201744031U true CN201744031U (en) | 2011-02-16 |
Family
ID=43578705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202850915U Expired - Lifetime CN201744031U (en) | 2010-08-06 | 2010-08-06 | Disposable retractable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201744031U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012167604A1 (en) * | 2011-06-07 | 2012-12-13 | 倍安德普医疗科技（上海）有限公司 | Safe self-destructive syringe |
| CN102908700A (en) * | 2012-11-20 | 2013-02-06 | 玉环县正日塑机有限公司 | Safe syringe |
| CN104027874A (en) * | 2014-06-19 | 2014-09-10 | 杨育和 | Retractable type safe injection syringe with changeable needle |
| CN104174098A (en) * | 2013-05-20 | 2014-12-03 | 上海康德莱企业发展集团股份有限公司 | Safe shell type injector |
| WO2015070524A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back replaceable-needle safe self-destroying syringe |
| GB2544278A (en) * | 2015-11-10 | 2017-05-17 | Gbuk Group Ltd | Syringes and inserts for syringes |
| CN106975130A (en) * | 2012-03-14 | 2017-07-25 | 卡贝欧洲有限公司 | Medicament delivery device |
| CN109908433A (en) * | 2018-12-05 | 2019-06-21 | 王琳 | Disposable micro high-precision safety injector |
-
2010
- 2010-08-06 CN CN2010202850915U patent/CN201744031U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012167604A1 (en) * | 2011-06-07 | 2012-12-13 | 倍安德普医疗科技（上海）有限公司 | Safe self-destructive syringe |
| CN106975130A (en) * | 2012-03-14 | 2017-07-25 | 卡贝欧洲有限公司 | Medicament delivery device |
| CN106975130B (en) * | 2012-03-14 | 2019-09-17 | 艾斯曲尔医疗公司 | Medicament delivery device |
| CN102908700A (en) * | 2012-11-20 | 2013-02-06 | 玉环县正日塑机有限公司 | Safe syringe |
| CN102908700B (en) * | 2012-11-20 | 2016-08-03 | 玉环县正日塑机有限公司 | A kind of safety injector |
| CN104174098A (en) * | 2013-05-20 | 2014-12-03 | 上海康德莱企业发展集团股份有限公司 | Safe shell type injector |
| WO2015070524A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back replaceable-needle safe self-destroying syringe |
| CN104027874A (en) * | 2014-06-19 | 2014-09-10 | 杨育和 | Retractable type safe injection syringe with changeable needle |
| WO2015192485A1 (en) * | 2014-06-19 | 2015-12-23 | 杨育和 | Retractable safe syringe with changeable needle |
| GB2544278A (en) * | 2015-11-10 | 2017-05-17 | Gbuk Group Ltd | Syringes and inserts for syringes |
| GB2544278B (en) * | 2015-11-10 | 2017-11-08 | Gbuk Group Ltd | Syringes and inserts for syringes |
| CN109908433A (en) * | 2018-12-05 | 2019-06-21 | 王琳 | Disposable micro high-precision safety injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI KINDLY ENTERPRISE DEVELOPMENT GROUP Free format text: FORMER NAME: SHANGHAI KANGDELAI ENTERPRISE DEVELOPMENT GROUP CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201803, Shanghai, Jiading District high tide Road, No. 1, building 658, 2 Patentee after: Shanghai Kindly Enterprise Development Group Co., Ltd. Address before: 201803 Shanghai city Jiading District Huajiang Road 668 Lane 18 Patentee before: Shanghai Kangdelai Enterprise Development Group Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |