CN103656795A - Safety injector - Google Patents
Safety injector Download PDFInfo
- Publication number
- CN103656795A CN103656795A CN201210359757.0A CN201210359757A CN103656795A CN 103656795 A CN103656795 A CN 103656795A CN 201210359757 A CN201210359757 A CN 201210359757A CN 103656795 A CN103656795 A CN 103656795A
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- China
- Prior art keywords
- push rod
- injection tube
- syringe
- sleeve
- safety injector
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Abstract
The invention discloses a safety injector. The safety injector is provided with medicine storage space. According to the safety injector, a positioning thread is arranged inside the top end of a syringe in an annular mode, a broken edge is arranged inside the bottom end of the syringe in an annular mode, the outside of the bottom end of the syringe protrudes outwards in the radial direction to form a stopping portion allowing a finger to push, a push rod is arranged in the medicine storage space of the syringe in the mode that the push rod can vertically slide in the medicine storage space of the syringe, a pushing portion is arranged at the top end of the push rod, a pushing piece is arranged at the bottom end of the push rod, multiple ribs are connected to the bottom end of the push rod, a needle base comprises a penetrating and sleeving portion provided with a channel, a protruding ring is arranged below the penetrating and sleeving portion in a protruding mode so that leakage can be prevented, a concave circular groove and an outer spiral section are arranged next to the lower end of the protruding ring, and the outer spiral section and the positioning thread of the syringe can be tightly combined through screwing. As a result, according to the safety injector, a syringe needle is stored in the medicine storage space of the syringe, and safety of using of medical instruments is guaranteed.
Description
Technical field
The present invention relates to a kind ofly can use syringe needle later to reclaim to be placed in the safety injector in injection tube.
Background technology
" pinprick " is the modal employment injuries of medical personnel located, the Potential danger of pinprick comes from the pathogen infection of blood or body fluid, according to medical institutions, estimate, annual pinprick event is at least over 30,000, be equal to 4 the pinprick events that just occur average per hour, wherein, by tool infectious disease as hepatitis B (HepaticB), C type hepatitis (Hepatic C) and acquired immunity lack the used syringe needle of patient of virus (HIV) and stab rate, be respectively 14%, 15% and 0.7%, so the high rate of stabbing also causes healthcare givers to use the fear on entry needle.
Though the inventor has had the patent of multinomial relevant safety injector, but still for the simplifying of structure of safety injector and the frictional force and the packing effect that increase combination between each member, urgently think improvement, adhere to excelsior spirit, then continue to concentrate on studies.
Summary of the invention
Object of the present invention is to provide a kind of recoverable syringe needle and is built in injection tube, and after finishing using, the syringe of the rotatable detachable needle in injection tube can be planted or be recovered in to needle cover; The syringe of described rotatable detachable needle can utilize the cervical region of the push rod of small diameter after use, the push rod that makes the to expose separated operation that can fracture.
The safety injector that can reach foregoing invention object, comprising:
One injection tube, has a drug storage space, and described injection tube top inner loop is provided with a positioning threads, and described injection tube bottom inner loop is provided with a break-off edges, and protrudes a stop section pushing for finger in described bottom outer radial;
One push rod, can axially slide up and down the drug storage space in described injection tube, described push rod top has a pushing part, this pushing part has extended upward a convex fastening part, in described pushing part lower outer, locate, be interval with the contraposition part of a plurality of projection shapes around again, the sheathed collar of described contraposition part, the below of the described collar is provided with a block edge, the diameter of this block edge is greater than the diameter of convex fastening part, described push rod bottom has a push jack, this push jack is connected with multiple tracks rib, between described rib and block edge, with a cervical region, is connected, and the diameter of this cervical region is less than the diameter of this block edge;
One needle stand, comprise: the sleeve through part with a passage, under described sleeve through part, convex with a bulge loop, next-door neighbour bulge loop lower end is provided with a concave ring groove and an external spiral section, described external spiral section can closely screw with the positioning threads of described injection tube, and in described passage, is provided with protruding grain, and the rear termination of described passage convex grain is established an accommodation space, in the surface of described accommodation space, convex with a plurality of locating pieces, for the contraposition part embedding of described push rod.
Described safety injector, wherein, described contraposition part has the guiding face of the locating piece of a relative needle stand.
Described safety injector, wherein, more include a pinhead sleeve, described pinhead sleeve one end is provided with a syringe needle, the described pinhead sleeve other end is provided with a guide lug portion, described guide lug portion provides a needle cover more closely to cover, and described pinhead sleeve can corresponding be sheathed on the sleeve through part of described needle stand and locates.
Described safety injector, wherein, after injection tube injection, described push rod continues forward and with the convex fastening part correspondence of this push rod, is fastened in again the top of the protruding grain in needle stand sleeve through part, then counter-rotate described push rod and described in interlock needle stand along the direction of the spiral of positioning threads, step back, make its external thread section depart from positioning threads, make the whole internal coiling section that departs from described injection tube of described needle stand simultaneously.
Described safety injector, wherein, the positioning threads of described injection tube front end, is square thread shape.
According to by above structure, make described needle stand by its internal coiling section of described injection tube, can on its sleeve through part, locate with the corresponding cover group of a pinhead sleeve, provide needle stand communicated in its positioning threads of injection tube and screw behind location, can make the medicinal liquid being installed in its drug storage space of described injection tube enter in the body of wanting injector via accommodation space, passage and needle injection thereafter.
Accompanying drawing explanation
Fig. 1 is the perspective exploded view of a preferred embodiment of the present invention;
Fig. 2 is the plan cross-section decomposing schematic representation of Fig. 1;
Fig. 3 is that described push rod wears described needle stand by the action schematic diagram of the rear end forward impelling of described injection tube;
Fig. 4 is the schematic perspective view of push rod front end;
Fig. 5 is the axonometric chart of needle stand;
Fig. 6 is the plane graph of needle stand;
Fig. 7 is plane combination and the cross-sectional schematic that described push rod wears described needle stand and passes from its syringe needle of described injection tube;
Fig. 8 is for being socketed plane combination and the cross-sectional schematic that described pinhead sleeve connects syringe needle with group and covers needle cover on the described needle stand passing in syringe needle perforation place of described Fig. 7;
Fig. 9 is needle stand outward appearance and the action schematic diagram of Fig. 8;
Figure 10 is for counter-rotating described push rod with its external spiral section stereoscopic motion schematic diagram separated with the positioning threads of described injection tube down of needle stand described in interlock;
Figure 11 fractures after the cervical region of described push rod needle stand and syringe needle to be retained in injection tube, more described needle cover is oppositely injected to the floor map of its syringe needle perforation place of described injection tube;
Figure 12 is the second enforcement figure of the positioning threads of injection tube.
Description of reference numerals: 1-injection tube; 11-drug storage space; 12-positioning threads; 13-break-off edges; 14-stop section; 2-push rod; 21-pushing part; 22-convex fastening part; 23-contraposition part; 24-guiding face; 25-block edge; The 26-collar; 27-cervical region; 28-rib; 29-push jack; 3-needle stand; 31-sleeve through part; 32-passage; 33-accommodation space; 34-locating piece; 35-external spiral section; 36-concave ring groove; 37-bulge loop; The protruding grain of 38-; 4-pinhead sleeve; 41-syringe needle; 42-guide lug portion; 43-needle cover.
The specific embodiment
Refer to shown in Fig. 1 to Fig. 2, a kind of safety injector of the present invention, it includes an injection tube 1, a push rod 2, a needle stand 3, a pinhead sleeve 4 and a needle cover 43 and forms; Wherein
One injection tube 1, has a drug storage space 11, and described injection tube 1 top inner loop is provided with a positioning threads 12, and bottom inner loop is provided with a break-off edges 13, and protrudes a stop section 14 that can push for finger in described bottom outer radial.
Described push rod 2 can axially slide up and down the drug storage space 11 in described injection tube 1, described push rod 2 tops have a pushing part 21, and extend upward the convex fastening part 22 of a small diameter, in described pushing part 21 lower outer, around locate again, be interval with the contraposition part 23 of a plurality of projection shapes, and follow a sheathed collar 26, the below that is connected on the described collar 26 is provided with a larger-diameter block edge 25, described push rod 2 bottoms have a push jack 29 and are connected with multiple tracks rib 28 again, and described push jack 29 at least on one side sheet subscript is provided with the relative arrow sign of sensing, between described rib 28 and block edge 25 and with the cervical region 27 of a small diameter, be connected, in addition, described block edge 25 can be retained in the effect in injection tube 1 in more than 27 positions by its cervical region for twisting push rod 2 after injecting, separately, described contraposition part 23 has the guiding face 24 of the locating piece 34 of a relative needle stand 3,
Refer to shown in Fig. 4 to Fig. 6, described needle stand 3 comprises the sleeve through part 31 with a passage 32, described sleeve through part convexes with a bulge loop 37 for 31 times, the effect of leakproof is provided, next-door neighbour bulge loop 37 lower ends are provided with a concave ring groove 36 and an external spiral section 35, described external spiral section 35 can closely screw with the positioning threads 12 of described injection tube 1, and in described passage 32, be provided with protruding grain 38, and termination is established an accommodation space 33 thereafter, in the surface of described accommodation space 33, convex with a plurality of locating pieces 34, contraposition part 23 for described push rod 2 can embed according to this, in 34 adjacent of two locating pieces, be formed with a spacing space.
Wherein, more include a pinhead sleeve 4, described pinhead sleeve 4 one end are provided with a syringe needle 41, the other end is provided with a guide lug portion 42, it is more tight when described guide lug portion 42 can provide a needle cover 43 to cover, and described pinhead sleeve 4 is just able to correspondence and is sheathed on location on described needle stand 3 these sleeve through part 31, when needle stand 3 is by described injection tube 1 its positioning threads 12, can on this sleeve through part 31, locate with the corresponding cover group of a pinhead sleeve 4, provide needle stand 3 and syringe needle 41 are communicated in injection tube 1 its positioning threads 12 and screw behind location thereafter, can make described injection tube 1 interior the be installed in medicinal liquid in its drug storage space 11 can be via accommodation space 33, passage 32 and syringe needle 41 injections enter in the body of wanting injector.
Described needle cover 43 is one to be conical body, can cover the pinhead sleeve 4 that is piercing in described injection tube 1, has the danger of scathing body to produce to avoid syringe needle 41 directly to expose.
Refer to shown in Fig. 3 and Fig. 7 to Fig. 8, according to by above-described a kind of safety injector, when using the safety injector of invention, first described needle stand 3 is placed in the drug storage space 11 of described injection tube 1, described push rod 2 is pushed by the rear of needle stand 3, and in the spacing space of 34 of adjacent two locating pieces in the inside that makes its contraposition part 23 correspondences be embedded in needle stand 3, group has connect, continue promote described push rod 2 and drive described needle stand 3 forward, when the sleeve through part 31 of described needle stand 3 is wanted to be stretched through the positioning threads 12 of described injection tube 1, the external spiral section 35 of described needle stand 3 is threaded because of the positioning threads 12 with described injection tube 1, make the needle stand 3 can be against rotation direction forward, make bulge loop 37 on described needle stand 3 just be held in the internal face of described injection tube 1 its positioning threads 12, and the internal face of injection tube 1 in the collar 26 packings on described push rod 2, and guarantee that its drug storage space 11 is complete sealing state, then, when described needle stand 3 its sleeve through part 31, can make pinhead sleeve 4 with inclined-plane, fit in sleeve through part 31 along needle stand 3 rotation direction sleeve through part 31 the pinhead sleeve 4 cover groups that cover needle cover 43.
Action when user wish extracts medicinal liquid is identical with existing product, user is taken down described needle cover 43 and syringe needle 41 is inserted in medicine bottle (scheming not shown), directly described push rod 2 is retracted backward and medicinal liquid suction can be entered in drug storage space 11, because described needle stand 3 is by the structure of described external spiral section 35 and positioning threads 12, firmly group is established and is positioned on described injection tube 1, again as shown in Figure 9, and after injection, make described push rod 2 continue forward also multiple convex fastening part 22 correspondences with its push rod 2 and be fastened in the top of protruding 38 in needle stand 3 sleeve through part 31, as shown in figure 10, then counter-rotate described push rod 2 and described in interlock needle stand 3 along the direction of the spiral of positioning threads 12, step back, make its external spiral section depart from positioning threads 12, make after the positioning threads 12 of the described injection tube 1 of described needle stand 3 whole disengaging simultaneously, needle stand 3 is hidden in the drug storage space 11 of described injection tube 1 together with syringe needle 41, the cervical region 27 for the treatment of described push rod 2 retreats to 11 its break-off edges 13 places, described drug storage space, the left and right described push rod 2 of twisting fractures its cervical region 27, as shown in figure 11, and its syringe needle 41 can be retained in injection tube 1, again described needle cover 43 is oppositely inserted in positioning threads 12, lose again and in syringe retracting device, regain destruction.
As shown in figure 12, for second of the positioning threads 12 of injection tube 1, implement figure, the positioning threads 12 of described injection tube 1 front end, can be square thread shape, makes its joint more tight.
Safety injector provided by the present invention, mutually relatively time, has more following advantage with aforementioned case and other prior aries quoted as proof:
1. the present invention promotes the practicality of safety injector, utilize convex fastening part 22 correspondences of push rod 2 to be fastened in the top of protruding 38 in needle stand 3 sleeve through part 31, completely medicinal liquid is pushed out to drug storage space 11, medicinal liquid in injection tube 1 is injected completely and entered human body, and can reduce the pollution problem of medicinal liquid.
2. the present invention can be by syringe needle 41 income described drug storage spaces 11, avoid the danger of using syringe needle 41 later to stab human body to occur, and use injection tube 1, push rod 2, needle stand 3 and syringe needle 41 later all cannot reclaim and re-use, guarantee the safety that medical device uses.
3. 1 of needle stand 3 and described injection tube rely on the inside and outside spiral section that is square thread shape to be threaded form that group connects described in, not only engage more tight, and making injection tube 1 comparatively easy with needle stand 3 withdrawing pattern when manufacturing, mortality is less, can reduce manufacturing cost.
Above-listed detailed description is illustrating for a possible embodiments of the present invention, yet described embodiment is not in order to limit the scope of the claims of the present invention, allly do not depart from the equivalence that skill spirit of the present invention does and implement or change, all should be contained in the scope of the claims of the present invention.
In sum, the present invention not only really belongs to innovation in the kenel of space, and can promote above-mentioned multinomial effect by more existing article, should fully meet novelty and creationary legal patent of invention important document, filing an application in whence in accordance with the law, earnestly asks your office and check and approve the application for a patent for invention of this part, to encourage invention, to feeling moral just.
Claims (5)
1. a safety injector, is characterized in that, comprising:
One injection tube, has a drug storage space, and described injection tube top inner loop is provided with a positioning threads, and described injection tube bottom inner loop is provided with a break-off edges, and protrudes a stop section pushing for finger in described bottom outer radial;
One push rod, can axially slide up and down the drug storage space in described injection tube, described push rod top has a pushing part, this pushing part has extended upward a convex fastening part, in described pushing part lower outer, locate, be interval with the contraposition part of a plurality of projection shapes around again, the sheathed collar of described contraposition part, the below of the described collar is provided with a block edge, the diameter of this block edge is greater than the diameter of convex fastening part, described push rod bottom has a push jack, this push jack is connected with multiple tracks rib, between described rib and block edge, with a cervical region, is connected, and the diameter of this cervical region is less than the diameter of this block edge;
One needle stand, comprise: the sleeve through part with a passage, under described sleeve through part, convex with a bulge loop, next-door neighbour bulge loop lower end is provided with a concave ring groove and an external spiral section, described external spiral section can closely screw with the positioning threads of described injection tube, and in described passage, is provided with protruding grain, and the rear termination of the protruding grain in described passage is established an accommodation space, in the surface of described accommodation space, convex with a plurality of locating pieces, for the contraposition part embedding of described push rod.
2. safety injector as claimed in claim 1, is characterized in that, described contraposition part has the guiding face of the locating piece of a relative needle stand.
3. safety injector as claimed in claim 1, it is characterized in that, more include a pinhead sleeve, described pinhead sleeve one end is provided with a syringe needle, the described pinhead sleeve other end is provided with a guide lug portion, described guide lug portion provides a needle cover more closely to cover, and described pinhead sleeve can corresponding be sheathed on the sleeve through part of described needle stand and locates.
4. safety injector as claimed in claim 1, is characterized in that, the convex fastening part of this push rod can corresponding be fastened in the top of the protruding grain in the sleeve through part of needle stand.
5. safety injector as claimed in claim 1, is characterized in that, the positioning threads of described injection tube front end is square thread shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210359757.0A CN103656795A (en) | 2012-09-24 | 2012-09-24 | Safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210359757.0A CN103656795A (en) | 2012-09-24 | 2012-09-24 | Safety injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103656795A true CN103656795A (en) | 2014-03-26 |
Family
ID=50296345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210359757.0A Pending CN103656795A (en) | 2012-09-24 | 2012-09-24 | Safety injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103656795A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704197A (en) * | 2018-04-29 | 2018-10-26 | 东莞市联洲知识产权运营管理有限公司 | A kind of improved syringe of structure |
| CN109303954A (en) * | 2017-07-27 | 2019-02-05 | 刘期全 | Syringe construction |
| CN109310819A (en) * | 2016-06-23 | 2019-02-05 | 特克法马许可公司 | Coupling mechanism for drug delivery device |
| CN109513070A (en) * | 2017-09-18 | 2019-03-26 | 刘期全 | Automatically safe injector is inside contracted |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001187142A (en) * | 2000-01-05 | 2001-07-10 | Jms Co Ltd | Safe injector |
| CN2936285Y (en) * | 2006-08-29 | 2007-08-22 | 吴渭水 | Retractable needle safety injector |
| CN101524567A (en) * | 2008-03-04 | 2009-09-09 | 吴渭水 | Safe injector |
| CN202822342U (en) * | 2012-09-24 | 2013-03-27 | 松亿国际企业股份有限公司 | Safe injector |
-
2012
- 2012-09-24 CN CN201210359757.0A patent/CN103656795A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001187142A (en) * | 2000-01-05 | 2001-07-10 | Jms Co Ltd | Safe injector |
| CN2936285Y (en) * | 2006-08-29 | 2007-08-22 | 吴渭水 | Retractable needle safety injector |
| CN101524567A (en) * | 2008-03-04 | 2009-09-09 | 吴渭水 | Safe injector |
| CN202822342U (en) * | 2012-09-24 | 2013-03-27 | 松亿国际企业股份有限公司 | Safe injector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109310819A (en) * | 2016-06-23 | 2019-02-05 | 特克法马许可公司 | Coupling mechanism for drug delivery device |
| CN109310819B (en) * | 2016-06-23 | 2022-01-28 | 益首药物治疗股份公司 | Coupling mechanism for a drug delivery device |
| CN109303954A (en) * | 2017-07-27 | 2019-02-05 | 刘期全 | Syringe construction |
| CN109513070A (en) * | 2017-09-18 | 2019-03-26 | 刘期全 | Automatically safe injector is inside contracted |
| CN108704197A (en) * | 2018-04-29 | 2018-10-26 | 东莞市联洲知识产权运营管理有限公司 | A kind of improved syringe of structure |
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| PB01 | Publication | ||
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Application publication date: 20140326 |