CN109701115A - A kind of automatic self-destruction syringe - Google Patents
A kind of automatic self-destruction syringe Download PDFInfo
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- CN109701115A CN109701115A CN201811453244.XA CN201811453244A CN109701115A CN 109701115 A CN109701115 A CN 109701115A CN 201811453244 A CN201811453244 A CN 201811453244A CN 109701115 A CN109701115 A CN 109701115A
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- needle
- snap ring
- syringe
- spring base
- cavity
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- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 238000004064 recycling Methods 0.000 claims abstract description 12
- 210000000078 claw Anatomy 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 241001149930 Protura <class> Species 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000001467 acupuncture Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 235000010894 Artemisia argyi Nutrition 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 244000030166 artemisia Species 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000005252 hepatitis A Diseases 0.000 description 1
- 208000002672 hepatitis B Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of automatic self-destruction syringes, including syringe, push rod, piston and the needle point for being set to the syringe front end, the needle point is connected through a needle holder core and a needle stand with the syringe, it is characterized by: the push rod is hollow structure, the middle part of the hollow structure is equipped with limited location snap ring, narrowing mechanism is equipped with positioned at the top of limited location snap ring, the front end of the narrowing mechanism passes through the piston tip, it is movably connected on the needle holder core tail portion, its rear end is held on the limited location snap ring, the lower part of the limited location snap ring is narrowing cavity, the narrowing mechanism is accommodated after injection；The narrowing mechanism includes a spring base and a recycling spring.The syringe construction is simple, automatic retracting needle tip is extremely narrowed in cavity by narrowing mechanism, while avoiding later period needle point exposed.
Description
Technical field
The present invention relates to a kind of syringe more particularly to a kind of automatic self-destruction syringes.
Background technique
Disposable sterilized injector is a kind of new type medical equipment introduced China's the 1980s.It is avoided that intersecting
Infection, easy to use, the deep welcome by vast hospitalized patients.But prevent again since the disposable syringe of the quasi-tradition does not have
The characteristic used, some medical institutions' mismanagements or interests driving, disposable syringe, which exists, to be recovered, peddle and repeats to make
With, or needle point is exposed easy to medical worker's generation acupuncture accident after injection, if being injected object with hepatitis A, hepatitis B, Chinese mugwort
The communicable diseases such as disease are grown, there will be greatly security risk.
Currently, people have now been developed some self-destruction syringes to remedy problem above, but existing disposable injection
Device is mostly the core bar of pulling back after medical staff completes injection, until, by the core bar that fractures, damaging note in needle retractable to syringe
Emitter prevents syringe recycling and acupuncture accident.
It is damaged by pulling back with breaking mode, it is complicated for operation, the operating habit of medical staff is changed, and after breaking-up
Syringe needle point may expose syringe with syringe angle change, equally exist the possibility for causing acupuncture accident,
Therefore, it is necessary to meet the requirement of safe handling by supplying a gap to the improvement on this body structure of syringe.
Summary of the invention
It is an object of the present invention to provide a kind of automatic self-destruction syringes, and the syringe construction is simple, easy to operate, solve
In injection manipulation, needle point retract the problem of, while avoid to medical worker generate acupuncture accident.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of automatic self-destruction syringe, including syringe,
Push rod, piston and the needle point for being set to the syringe front end, the needle point are connected through a needle holder core and a needle stand with the syringe,
The push rod is hollow structure, and the middle part of the hollow structure is equipped with limited location snap ring, is equipped with narrowing positioned at the top of limited location snap ring
The front end of mechanism, the narrowing mechanism passes through the piston tip, is movably connected on the needle holder core tail portion, its rear end is held on institute
It states on limited location snap ring, the lower part of the limited location snap ring is narrowing cavity, and the narrowing mechanism is accommodated after injection；The receipts
Needle mechanism includes a spring base and a recycling spring.
In above-mentioned technical proposal, the spring base tail end is equipped with a hanging platform outwardly protruded, sets in the middle part of the spring base
There is a limited step, which is butted on the inner top surface of the hollow structure, is from the inner top surface between the hanging platform
Compression chamber, the recycling spring pocket are set on the spring base, and are located in the compression chamber.
In above-mentioned technical proposal, the spring base top is equipped with rectangular cavity, and the rectangular cavity is equipped with flange along cavity wall,
Needle holder core tail end is connected in the rectangular cavity by the flange.
In above-mentioned technical proposal, the limited location snap ring is inwardly projecting arcwall face, and hanging platform bottom outer-edge face is to lead
To inclined-plane or curved guiding surface.
In above-mentioned technical proposal, the tail end of the hollow structure is equipped with an obturating plug, and the obturating plug is bullet, the spring
Bellmouth is equipped with inside seat tail end, the obturating plug outer edge surface is provided with several convex ribs, the obturating plug and the spring along the conical surface
Seat interference fit, the obturating plug tail end outer edge surface are equipped with protrusion or groove, and the hollow structure inner wall is recessed equipped with matching
It falls into or bulge loop, the two is connected together.
In above-mentioned technical proposal, the front end center of the syringe is equipped with elastic card claw, is arranged outside the elastic card claw described
Needle stand, this described core are set in the needle stand.
In above-mentioned technical proposal, the tail end of the needle holder core is a conehead, and the conehead prolongs direction along bus and is equipped with positioning
Slot or positioning strip, the narrowing mechanism top are equipped with cavity, are equipped with the positive stop strip or limiting slot matched, the needle stand in cavity
It is corresponded on core and is equipped with annular protrusion at the elastic card claw, the annular protrusion and the needle stand inner edge surface are interference fitted, described
Elastic card claw top surface is butted on the annular protrusion.
In above-mentioned technical proposal, the elastic card claw is surrounded by several petal piece intervals, the company of being equipped between adjacent petal piece
The connection film of two sides petal piece is connect, the needle stand inner edge surface corresponds to the elastic card claw bottom end equipped with snap ring.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of automatic self-destruction syringe, including syringe,
Push rod, piston and the needle point for being set to the syringe front end, the needle point are connected through a needle holder core and a needle stand with the syringe,
The push rod is hollow structure, and the middle part of the hollow structure is equipped with limited location snap ring, is equipped with narrowing positioned at the top of limited location snap ring
The front end of mechanism, the narrowing mechanism passes through the piston tip, is movably connected on the needle holder core tail portion, its rear end is held on institute
It states on limited location snap ring, the lower part of the limited location snap ring is narrowing cavity, and the narrowing mechanism is accommodated after injection；The receipts
Needle mechanism includes a spring base and a recycling spring.
In above-mentioned technical proposal, the spring base tail end is equipped with a hanging platform outwardly protruded, sets in the middle part of the spring base
There is a limited step, which is butted on the inner top surface of the hollow structure, is from the inner top surface between the hanging platform
Compression chamber, the recycling spring pocket are set on the spring base, and are located in the compression chamber.
In above-mentioned technical proposal, the spring base top is equipped with rectangular cavity, and the rectangular cavity is equipped with flange along cavity wall,
Needle holder core tail end is connected in the rectangular cavity by the flange.
In above-mentioned technical proposal, the limited location snap ring is inwardly projecting arcwall face, and hanging platform bottom outer-edge face is to lead
To inclined-plane or curved guiding surface.
In above-mentioned technical proposal, the tail end of the hollow structure is equipped with an obturating plug, and the obturating plug is bullet, the spring
Bellmouth is equipped with inside seat tail end, the obturating plug outer edge surface is provided with several convex ribs, the obturating plug and the spring along the conical surface
Seat interference fit, the obturating plug tail end outer edge surface are equipped with protrusion or groove, and the hollow structure inner wall is recessed equipped with matching
It falls into or bulge loop, the two is connected together.
In above-mentioned technical proposal, the front end center of the syringe is equipped with elastic card claw, is arranged outside the elastic card claw described
Needle stand, this described core are set in the needle stand.
In above-mentioned technical proposal, the tail end of the needle holder core is a conehead, and the conehead prolongs direction along bus and is equipped with positioning
Slot or positioning strip, the narrowing mechanism top are equipped with cavity, are equipped with the positive stop strip or limiting slot matched, the needle stand in cavity
It is corresponded on core and is equipped with annular protrusion at the elastic card claw, the annular protrusion and the needle stand inner edge surface are interference fitted, described
Elastic card claw top surface is butted on the annular protrusion.
In above-mentioned technical proposal, the elastic card claw is surrounded by several petal piece intervals, the company of being equipped between adjacent petal piece
The connection film of two sides petal piece is connect, the needle stand inner edge surface corresponds to the elastic card claw bottom end equipped with snap ring.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
1. push rod is hollow structure in the present invention, the middle part of hollow structure is equipped with limited location snap ring, positioned at the upper of limited location snap ring
Portion is equipped with narrowing mechanism, and narrowing mechanism is movably connected on core tail portion of bestirring oneself, and the lower part of limited location snap ring is narrowing cavity, ties in injection
Receiving narrowing mechanism after beam, accommodates needle point to narrowing cavity, avoids generating acupuncture accident, prevents making again for syringe
With.
2. mechanism of narrowing is that a spring base and a recycling spring, spring base tail end are equipped with an outwardly projecting hanging platform, spring
The middle part of seat is equipped with a limited step, and limited step is butted on the inner top surface of hollow structure, from the top surface to being pressure between hanging platform
Contracting chamber pushes up push rod, spring base and piston and offsets with syringe top surface after medical worker completes injection, generates reaction
Power, while compressed spring make narrowing mechanism bounce back to narrowing cavity under reaction force acts, and structure is simple, easy to operate.
3. spring base top is equipped with rectangular cavity, rectangular cavity is equipped with flange along cavity wall, and needle holder core tail end passes through flange card
It is connected in rectangular cavity, so that medical worker upon completion of the injection, pushes up push rod, spring base and needle holder core are completed to be clamped,
Narrowing mechanism rebound when can automatic traction needle holder core bounce back together.
4. the tail end of hollow structure is equipped with obturating plug, obturating plug is bullet, is equipped with bellmouth inside spring base tail end, outside obturating plug
Edge face is provided with several convex ribs along the conical surface, and obturating plug and spring base are interference fitted, it is ensured that spring base bounces back to quilt after narrowing cavity
It is fixed on obturating plug, prevents later period needle point from leaking outside, cause sticks injuries.
5. obturating plug tail end outer edge surface is equipped with protrusion or groove, hollow structure inner wall is equipped with the recess matched or bulge loop,
The two is connected together, and guarantees sealing, prevents injection from leaking outside.
6. syringe front end is provided with elastic card claw, which is surrounded by several petal piece intervals, makes elastic card claw
There is certain chucking power to needle holder core, improve the stability of needle point, in the state that elastic card claw opens, needle tip retracts can be met
Requirement stablize needle point and in a gripping situation, while the connection film of connection two sides petal piece is equipped between adjacent petal piece,
Convenient for the molding of elastic card claw.
Detailed description of the invention
Fig. 1 is automatic self-destruction syringe structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram after needle tip retracts of the present invention；
Fig. 3 is the decomposition diagram of Fig. 1；
Fig. 4 is push rod half-section diagram of the present invention；
Fig. 5 is spring seat structure schematic diagram of the present invention；
Fig. 6 is spring base half-section diagram of the present invention；
Fig. 7 is obturating plug structural schematic diagram of the present invention；
Fig. 8 is needle holder core structural schematic diagram of the present invention；
Fig. 9 is needle stand half-section diagram of the present invention；
Figure 10 is syringe front end of the present invention partial structural diagram.
Wherein: 1, syringe；2, push rod；3, piston；4, needle point；5, needle holder core；6, needle stand；7, limited location snap ring；8, narrowing is empty
Chamber；9, spring base；10, spring is recycled；11, hanging platform；12, limited step；13, compression chamber；14, rectangular cavity；15, flange；
16, obturating plug；17, bellmouth；18, convex ribs；19, groove；20, elastic card claw；21, conehead；22, locating slot；23, annular protrusion；
24, petal piece；25, film is connected；26, snap ring.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one: referring to shown in Fig. 1~10, a kind of automatic self-destruction syringe, including syringe 1, push rod 2, piston 3 and
It is set to the needle point 4 of 1 front end of syringe, the needle point 4 is connected through a needle holder core 5 and a needle stand 6 with the syringe 1, described
Push rod 2 is hollow structure, and the middle part of the hollow structure is equipped with limited location snap ring 7, is equipped with narrowing machine positioned at the top of limited location snap ring 7
The front end of structure, the narrowing mechanism passes through 3 top of piston, is movably connected on 5 tail portion of needle holder core, its rear end is held on institute
It states on limited location snap ring 7, the lower part of the limited location snap ring 7 is narrowing cavity 8, and the narrowing mechanism is accommodated after injection；Institute
Stating narrowing mechanism includes that a spring base 9 and a recycling spring 10 are bounced back the needle holder core 5 and needle point 4 by the narrowing mechanism
To narrowing cavity 8, avoid reusing and generating acupuncture accident.
Shown in Figure 1,9 tail end of spring base is equipped with a hanging platform 11 outwardly protruded, and the middle part of the spring base 9 is set
There is a limited step 12, which is butted on the inner top surface of the hollow structure, from the inner top surface to the hanging platform 11
Between be compression chamber 13, the recycling spring 10 is sheathed on the spring base 9, and is located in the compression chamber 13, realization
4 automatic retracted of needle point, facilitates operation.
Referring to shown in Fig. 1~2,9 top of spring base is equipped with rectangular cavity 14, and the rectangular cavity 14 is set along cavity wall
There is flange 15,5 tail end of needle holder core is connected in the rectangular cavity 14 by the flange 15.
Medical worker upon completion of the injection, pushes up push rod 2, shifts spring base 9 and piston 3 onto syringe 1 top, continues
Push rod 2 is pushed, spring base 9 is limited by 1 top surface of syringe, and push rod 2 continues up compression piston 3, and 1 top surface of syringe produces spring base 9
A raw reaction force, simultaneously as the elastic force that the recycling compression of spring 10 generates, makes narrowing mechanism drive needle holder core 5 and needle point 4
It is recoiled in narrowing cavity 8.
Shown in Figure 4, the limited location snap ring 7 is inwardly projecting arcwall face, and the 11 bottom outer-edge face of hanging platform is to lead
To inclined-plane or curved guiding surface.
Referring to shown in Fig. 5~7, the tail end of the hollow structure is equipped with an obturating plug 16, and the obturating plug 16 is bullet, institute
It states and is equipped with bellmouth 17 inside 9 tail end of spring base, 16 outer edge surface of obturating plug is provided with several convex ribs 18, the plug along the conical surface
Seat 16 is interference fitted with the spring base 9, and spring base 9 is fixed on obturating plug 16, prevents later period needle point 4 from leaking outside, the obturating plug
16 tail end outer edge surfaces are equipped with groove 19, and the hollow structure inner wall is equipped with the bulge loop matched, and the two is connected together, and guarantee close
Envelope.
Shown in Figure 10, the front end center of the syringe 1 is equipped with elastic card claw 20, is arranged institute outside the elastic card claw 20
Needle stand 6 is stated, this described core is set in the needle stand 6.
Shown in Figure 8, the tail end of the needle holder core 5 is a conehead 21, and the conehead 21 prolongs direction equipped with fixed along bus
Position slot 22, the narrowing mechanism top are equipped with cavity, the positive stop strip matched are equipped in cavity, corresponds to institute on the needle holder core 5
It states and is equipped with annular protrusion 23 at elastic card claw 20, the annular protrusion 23 is interference fitted with 6 inner edge surface of needle stand, the elasticity
20 top surface of claw is butted on the annular protrusion 23, is supported to annular protrusion 23, is that needle holder core 5 returns to prevent injection from puncturing
It moves back.
Referring to shown in Fig. 9~10, the elastic card claw 20 is surrounded by several petal pieces 24 interval, between adjacent petal piece 24
Connection film 25 equipped with connection two sides petal piece 24,6 inner edge surface of needle stand correspond to 20 bottom end of elastic card claw and are equipped with card
Ring 26.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of automatic self-destruction syringe, described including syringe, push rod, piston and the needle point for being set to the syringe front end
Needle point is connected through a needle holder core and a needle stand with the syringe, it is characterised in that: the push rod is hollow structure, the hollow knot
The middle part of structure is equipped with limited location snap ring, is equipped with narrowing mechanism positioned at the top of limited location snap ring, the front end of the narrowing mechanism passes through described
Piston tip is movably connected on the needle holder core tail portion, and its rear end is held on the limited location snap ring, under the limited location snap ring
Portion is narrowing cavity, and the narrowing mechanism is accommodated after injection；The narrowing mechanism includes a spring base and a recycling bullet
Spring.
2. automatic self-destruction syringe according to claim 1, it is characterised in that: the spring base tail end is equipped with one outward
The middle part of the hanging platform of protrusion, the spring base is equipped with a limited step, which is butted on the inner top surface of the hollow structure
On, from the inner top surface to being compression chamber between the hanging platform, the recycling spring pocket is set on the spring base, and being located at should
In compression chamber.
3. automatic self-destruction syringe according to claim 1 or 2, it is characterised in that: the spring base top is equipped with side
Shape cavity, the rectangular cavity are equipped with flange along cavity wall, and needle holder core tail end is connected in the rectangular cavity by the flange.
4. automatic self-destruction syringe according to claim 1, it is characterised in that: the limited location snap ring is inwardly projecting
Arcwall face, hanging platform bottom outer-edge face are guiding surface or curved guiding surface.
5. automatic self-destruction syringe according to claim 1, it is characterised in that: the tail end of the hollow structure is equipped with one
Obturating plug, the obturating plug are bullet, are equipped with bellmouth inside the spring base tail end, the obturating plug outer edge surface is provided with along the conical surface
Several convex ribs, the obturating plug and the spring base are interference fitted, and the obturating plug tail end outer edge surface is equipped with protrusion or groove, described
Hollow structure inner wall is equipped with the recess matched or bulge loop, the two are connected together.
6. automatic self-destruction syringe according to claim 1, it is characterised in that: the front end center of the syringe is equipped with bullet
Property claw, be arranged the needle stand outside the elastic card claw, this described core is set in the needle stand.
7. automatic self-destruction syringe according to claim 6, it is characterised in that: the tail end of the needle holder core is a cone
Head, the conehead prolong direction equipped with locating slot or positioning strip along bus, and the narrowing mechanism top is equipped with cavity, is equipped in cavity
The positive stop strip or limiting slot matched corresponds on the needle holder core and is equipped with annular protrusion, the convex annular at the elastic card claw
It rises and is interference fitted with the needle stand inner edge surface, the elastic card claw top surface is butted on the annular protrusion.
8. automatic self-destruction syringe according to claim 6, it is characterised in that: the elastic card claw is by several petals
Piece interval surrounds, and the connection film of connection two sides petal piece is equipped between adjacent petal piece, and the needle stand inner edge surface corresponds to the bullet
Property claw bottom end be equipped with snap ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811453244.XA CN109701115A (en) | 2018-11-30 | 2018-11-30 | A kind of automatic self-destruction syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811453244.XA CN109701115A (en) | 2018-11-30 | 2018-11-30 | A kind of automatic self-destruction syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109701115A true CN109701115A (en) | 2019-05-03 |
Family
ID=66253949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811453244.XA Pending CN109701115A (en) | 2018-11-30 | 2018-11-30 | A kind of automatic self-destruction syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109701115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147840A1 (en) * | 2020-01-21 | 2021-07-29 | 贝普医疗科技有限公司 | Spring-back syringe having shielding needle eccentric baffle |
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| CN204655699U (en) * | 2015-05-16 | 2015-09-23 | 罗松能 | Automatic contractile safety syringe |
| CN204655681U (en) * | 2015-05-12 | 2015-09-23 | 上海聚民生物科技有限公司 | The safety injector of the mid-spring of a kind of core bar |
| CN210750654U (en) * | 2018-11-30 | 2020-06-16 | 衡刚 | Automatic self-destruction syringe |
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2018
- 2018-11-30 CN CN201811453244.XA patent/CN109701115A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356148A (en) * | 2000-08-31 | 2002-07-03 | 贝克顿迪肯森公司 | Hypodermic syringe with selectively contracted needle |
| US20110060278A1 (en) * | 2008-05-08 | 2011-03-10 | Shantou Wealy Medical Instrument Co., Ltd | disposable self-destruction safety syringe without fluid residua |
| CN201453787U (en) * | 2009-04-04 | 2010-05-12 | 李慧慧 | Disposable needle tip automatic retraction safe syringe |
| CN201505347U (en) * | 2009-09-30 | 2010-06-16 | 杨育和 | Improved self-destruction safety injector |
| CN102319470A (en) * | 2011-09-20 | 2012-01-18 | 黄灵扬 | Self-destructing type spring injector |
| CN102824672A (en) * | 2012-09-04 | 2012-12-19 | 广东顺德全能医事工业有限公司 | Automatic retracting type self-destruction injecting device |
| CN103285457A (en) * | 2013-05-28 | 2013-09-11 | 江波 | Air compression core bar structure of self-destroying syringe |
| CN203861694U (en) * | 2014-01-17 | 2014-10-08 | 罗奎 | Disposable syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147840A1 (en) * | 2020-01-21 | 2021-07-29 | 贝普医疗科技有限公司 | Spring-back syringe having shielding needle eccentric baffle |
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