CN102526845A - Safety self-destruction injector - Google Patents
Safety self-destruction injector Download PDFInfo
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- CN102526845A CN102526845A CN201010585200XA CN201010585200A CN102526845A CN 102526845 A CN102526845 A CN 102526845A CN 201010585200X A CN201010585200X A CN 201010585200XA CN 201010585200 A CN201010585200 A CN 201010585200A CN 102526845 A CN102526845 A CN 102526845A
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- circular step
- cylindrical shell
- safety self
- needle stand
- core bar
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Abstract
The invention discloses a safety self-destruction injector. The safety self-destruction injector is different from the prior art in that: an inner needle seat is provided with an annular rib; the upper part of the annular rib is provided with a needle tube assembly post body; the lower part of the annular rib is provided with an inner needle seat locking post body; the inner cavity of the inner needle seat locking post body is hollow; a conical pull-back locking piece is formed on the end part of a core bar of at least two symmetrically-distributed elastic wings arranged in the cavity; and the diameter of the conical pull-back locking piece is larger than the distance between the two elastic wings. A core bar with the conical pull-back locking piece is adopted in cooperation with an embedded elastic wing locking structure, so that automatic locking of the core bar and the inner needle seat is realized, a locking state is stable, a clamping effect is remarkable, the integral design structure of a component is reasonable, one-time demolding of each component can be realized, back full-automatic assembly of the entire injector can be realized, and a product design concept is skillful; and due to the adoption of automatic back assembly, the production efficiency of a product is increased effectively, the comprehensive cost of the product is reduced, and the market competitive power of the product is enhanced.
Description
Technical field
The present invention relates to technical field of medical, a kind of specifically safety self-destructing syringe, particularly its mechanical connecting structure.
Background technology
Documents one; The patent No.: ZL200710124562.7; Notification number: CN101161304; The patentee: Shenzhen Lijunda Technology Development Co., Ltd., this case discloses a kind of " automatic whip-back needle safety self-breaking syringe ", and it comprises a syringe, a push rod tube, a push rod seal circle, a resilience rubber band; This syringe comprises the cylindrical shell of an inner hollow, and the bottom end opening place of this cylindrical shell is provided with a diapire; This push rod tube comprises that one is plugged in this intravital body of rod; It is characterized in that: offer a hook groove on the top inwall of this cylindrical shell; This push rod tube comprises that one is located at the fixed part of this body of rod bottom, the inner hollow of this body of rod and form a motion cavity; On this push rod seal circle fixed part that should the push rod tube is provided with a junction, this connecting portion is connected with fixed part and the push rod seal circle is installed in the bottom of this body of rod; This syringe also comprises a connecting seat, and this Connection Block is installed in this push rod seal circle and stretches in the motion cavity of this body of rod, and this Connection Block comprises a body, and this body middle part offers a tank; This syringe comprises that also one is installed in the top of this Connection Block and stretches into the buckle connecting rod in the motion cavity of this body of rod; The hook that can corresponding be hooked on the hook groove of this cylindrical shell is equipped with on this buckle connecting rod top, and this buckle connecting rod top is concaved with a groove downwards; This resilience rubber band is the elastic tape of a sealing, and this resilience rubber band is set between the groove of tank and this buckle connecting rod of this Connection Block, and this Connection Block and buckle connecting rod are coupled together.
Documents two, the patent No.: ZL200810024166.1, notification number: CN101284155; The patentee: Otter (China) Medical Technology Limited, this case discloses a kind of " safe self-breaking syringe with greater force for preventing needle from withdrawing ", and it comprises the piped installation portion that is the internal diameter contraction that overcoat straight tube top is provided with; Be provided with sealing-plug in its external sleeve straight tube, said sealing-plug lower end is connected with the core bar that stretches out the overcoat straight tube, and said core bar outer surface is provided with outer lug; Correspondingly, its external sleeve straight tube is provided with the internal projection that outer lug is stopped, and is plugged with movable needle stand in the installation portion; Be provided with needle tubing in the movable needle stand, the overcoat straight tube internal cavities that movable needle stand and sealing-plug enclosed is injection storage chamber, and the entrance point of needle tubing is communicated with injection storage chamber; Movable needle stand sidewall is provided with outer lug, correspondingly, is provided with the internal projection that outer lug is stopped at the installation portion inner surface; Be provided with the hook that stretches into injection storage intracavity in movable needle stand bottom; On sealing-plug, be provided with the inclined-plane that tightens up of hook, the below of tightening up the inclined-plane is provided with the deflection hole, and the axis in said deflection hole and the axis of overcoat straight tube are the deflection setting; On sealing-plug, be provided with the buckling parts that sealing-plug is connected one with hook; It is characterized in that: the outer surface of movable needle stand is provided with cyclic groove, and the installation portion inwall of said groove is provided with the depression in the form of a ring with groove fit, in groove and depression, is provided with the elastic sealing ring with they interference fit.
Documents three; The patent No.: ZL200520016075.5; Notification number: CN2748099; Patentee: Gongchuang Medical Instrument Science-Technology Co., Ltd., Danyang City; This case discloses a kind of " safety injector that syringe needle can bounce back automatically ", includes syringe cylinder, barrel type push bar, needle stand, injection needle, O RunddichtringO, stage clip thromboembolism, compression spring, sealed rubber ring, is used to protect the entry needle protective cap and the piston of injection needle, and said injection needle is fixed in the said needle stand; It is characterized in that: the front end of said syringe cylinder is provided with the fixture that is used for fixing needle stand and stage clip thromboembolism; One end of said needle stand and fixture is through O RunddichtringO sealing and fixing, and said stage clip thromboembolism is fixedly connected with the other end of said fixture, between said needle stand and stage clip thromboembolism, is provided with can needle stand and injection needle be pushed the inner compression spring of barrel type push bar; Said barrel type push bar is plugged in the said syringe cylinder; This barrel type push bar is positioned at the inner said sealed rubber ring of end outside suit of said syringe cylinder; The inboard is fixed with can get into the inner piston of barrel type push bar under the effect of said needle stand propulsive thrust; The other end of said barrel type push bar extends said syringe cylinder, and is equipped with one at this end that extends syringe cylinder and pushes away end, and this pushes away end and includes the end of pressing hands and being connected with barrel type push bar; One end tight fit of said end and barrel type push bar; And be provided with in the end to be used to control and push away the plectane that end gets into the barrel type push bar degree of depth and sealing barrel type push bar, on this plectane, be provided with a through hole, the said hands of pressing is being connected for being prone to folded structure with the junction of plectane.
Be not difficult to find out that from above-mentioned documents existing safety self-destructing syringe overall structure more complicated is in order to realize the lock function of its expection; Often on design drawing, adopt the multi-part assembling,, in actual production with in actual the use, still have problems though can realize in theory; For example; The locking stopping means of core bar is too complicated, can't realize a demoulding, and all parts can't be realized the assembling of rear portion automatization.
So still need further improve to existing safety self-destructing syringe structure.
Summary of the invention
The object of the present invention is to provide a kind of safety self-destructing syringe; It adopts the pull back core bar structure of locking piece of band taper; Cooperate embedded elastic fin latch-up structure, the integral locks fixed structure is simple, stable working state; Core bar and cylinder part can realize that a demoulding and rear portion automatically assemble, and have overcome the shortcoming and defect that exists in the prior art.
To achieve these goals, technical scheme of the present invention is: a kind of safety self-destructing syringe, and it comprises cylindrical shell; Be provided with core bar in the cylindrical shell, core bar is socketed with plug near the place, end, and the upper end of cylindrical shell is the tube neck; Be provided with interior needle stand in the tube neck, the place, end of interior needle stand is provided with needle tubing, it is characterized in that: said tube neck inwall forms from top to bottom successively goes up circular step and following circular step; The cylindrical shell upper shed is to being the tube neck between the circular step down, and the distance between last circular step and the following circular step is 2mm-12mm, and the tube neck interior diameter between last circular step and the following circular step is 2mm-8mm; The distance of last circular step and cylindrical shell upper shed place is 2mm-18mm; The cylindrical shell interior diameter of following circular step bottom is 3mm-20mm, and interior needle stand place is provided with the ring-type convex tendon, and ring-type convex tendon top is needle tubing assembling cylinder; Ring-type convex tendon bottom is interior needle stand locking cylinder; Interior needle stand locking column intracoelomic cavity hollow, the elastic fin core bar end place that is provided with at least two symmetrical distributions in the cavity forms the taper locking piece of pulling back, and taper is pulled back the diameter of locking piece greater than the distance between two elastic fins.
The invention discloses a kind of safety self-destructing syringe, it adopts the pull back core bar structure of locking piece of band taper, cooperates embedded elastic fin latch-up structure; Realize automatically locking of core bar and interior needle stand, and lock-out state is stable, the engaging effect is remarkable; The parts global design is rational in infrastructure, and each parts can be realized a demoulding, and syringe integral body can realize that the rear portion automatically assembles; Product design is skillfully constructed, and automatization's rear portion assembling has effectively improved production efficiency of products, has reduced the integrated cost of product; Improve the competitiveness of product in market, had outstanding substantive distinguishing features and marked improvement compared to existing technologies.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 1 middle cylinder body.
The specific embodiment
With reference to the accompanying drawings, the present invention is further described
The present invention is a kind of safety self-destructing syringe, and it comprises cylindrical shell 1, is provided with core bar 2 in the cylindrical shell 1; Core bar 2 is socketed with plug 3 near the place, end, and the upper end of cylindrical shell 1 is a tube neck 4, needle stand 5 in being provided with in the tube neck 4; The end of interior needle stand 5 is located to be provided with needle tubing 6, and it is different from prior art and is: said tube neck 4 inwalls form from top to bottom successively goes up circular step 7 and following circular step 8, and cylindrical shell 1 upper shed is extremely down a tube neck 4 between the circular step 8; Distance between last circular step 7 and the following circular step 8 is 2mm-12mm; Tube neck 4 interior diameters between last circular step 7 and the following circular step 8 are 2mm-8mm, and last circular step 7 is 2mm-18mm with the distance of cylindrical shell upper shed place, and cylindrical shell 1 interior diameter of following circular step 8 bottoms is 3mm-20mm; Interior needle stand 5 places are provided with ring-type convex tendon 9; Ring-type convex tendon 9 tops are needle tubing assembling cylinder 10, and ring-type convex tendon 9 bottoms are interior needle stand locking cylinder 11, interior needle stand locking cylinder 11 inner chamber hollows; The elastic fin 12 core bars 2 ends place that is provided with at least two symmetrical distributions in the cavity forms the taper locking piece 13 of pulling back, and taper is pulled back the diameter of locking piece 13 greater than the distance between two elastic fins 12.
In the specific implementation, the diameter of said ring-type convex tendon 9 is greater than last circular step 7 bottom tube necks 4 interior diameter 0.03mm-0.2mm.
In the specific implementation, said ring-type convex tendon 9 top edges to interior needle stand locking cylinder 11 lower limb length are less than length 0.1mm-5mm between last circular step 7 and the following circular step 8.
In the specific implementation, the length of said needle tubing assembling cylinder 10 is greater than last circular step 7 to cylindrical shell 1 upper shed length 1mm-12mm.
In the specific implementation, the pull back diameter of locking piece 13 of said taper is 1mm-6mm.
In the specific implementation, the distance between said elastic fin 12 lower limbs and interior needle stand locking cylinder 11 bottoms is 0.2mm-3mm.
In the specific implementation, said core bar 2 places are provided with vee 14.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to above-mentioned these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (7)
1. safety self-destructing syringe; It comprises cylindrical shell (1); Be provided with core bar (2) in the cylindrical shell (1), core bar (2) is socketed with plug (3) near the place, end, and the upper end of cylindrical shell (1) is a tube neck (4); Be provided with interior needle stand (5) in the tube neck (4); The place, end of interior needle stand (5) is provided with needle tubing (6), it is characterized in that: said tube neck (4) inwall forms from top to bottom successively goes up circular step (7) and following circular step (8), and cylindrical shell (1) upper shed is extremely down tube neck (4) between the circular step (8); Distance between last circular step (7) and the following circular step (8) is 2mm-12mm; Tube neck (4) interior diameter between last circular step (7) and the following circular step (8) is 2mm-8mm, and last circular step (7) is 2mm-18mm with the distance of cylindrical shell upper shed place, and cylindrical shell (1) interior diameter of following circular step (8) bottom is 3mm-20mm; Interior needle stand (5) locates to be provided with ring-type convex tendon (9); Ring-type convex tendon (9) top is needle tubing assembling cylinder (10), and ring-type convex tendon (9) bottom is interior needle stand locking cylinder (11), interior needle stand locking cylinder (11) inner chamber hollow; Elastic fin (12) core bar (2) the end place that is provided with at least two symmetrical distributions in the cavity forms the taper locking piece (13) of pulling back, and taper is pulled back the diameter of locking piece (13) greater than the distance between two elastic fins (12).
2. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the diameter of said ring-type convex tendon (9) is greater than last circular step (7) bottom tube neck (4) interior diameter 0.03mm-0.2mm.
3. a kind of safety self-destructing syringe according to claim 1 is characterized in that: said ring-type convex tendon (9) top edge to interior needle stand locking cylinder (11) lower limb length is less than length 0.1mm-5mm between last circular step (7) and the following circular step (8).
4. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the length of said needle tubing assembling cylinder (10) is greater than last circular step (7) to cylindrical shell (1) upper shed length 1mm-12mm.
5. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the pull back diameter of locking piece (13) of said taper is 1mm-6mm.
6. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the distance between said elastic fin (12) lower limb and interior needle stand locking cylinder (11) bottom is 0.2mm-3mm.
7. a kind of safety self-destructing syringe according to claim 1 is characterized in that: said core bar (2) locates to be provided with vee (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010585200XA CN102526845A (en) | 2010-12-13 | 2010-12-13 | Safety self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010585200XA CN102526845A (en) | 2010-12-13 | 2010-12-13 | Safety self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102526845A true CN102526845A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010585200XA Pending CN102526845A (en) | 2010-12-13 | 2010-12-13 | Safety self-destruction injector |
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|---|---|
| CN (1) | CN102526845A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446643A (en) * | 2012-08-24 | 2013-12-18 | 江苏亿乐医疗用品有限公司 | Core rod locking-type safety syringe |
| CN106310462A (en) * | 2016-03-28 | 2017-01-11 | 余利荣 | Syringe solution pushing plunger |
| CN110786984A (en) * | 2019-11-04 | 2020-02-14 | 上海康德莱企业发展集团股份有限公司 | Special silicone oil-free injector for ophthalmology |
-
2010
- 2010-12-13 CN CN201010585200XA patent/CN102526845A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446643A (en) * | 2012-08-24 | 2013-12-18 | 江苏亿乐医疗用品有限公司 | Core rod locking-type safety syringe |
| CN103446643B (en) * | 2012-08-24 | 2015-12-09 | 江苏亿乐医疗用品有限公司 | A kind of core rod locking-type safety syringe |
| CN106310462A (en) * | 2016-03-28 | 2017-01-11 | 余利荣 | Syringe solution pushing plunger |
| CN110786984A (en) * | 2019-11-04 | 2020-02-14 | 上海康德莱企业发展集团股份有限公司 | Special silicone oil-free injector for ophthalmology |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |