CN201643259U - Safety self-destruction type injector - Google Patents
Safety self-destruction type injector Download PDFInfo
- Publication number
- CN201643259U CN201643259U CN2010202977009U CN201020297700U CN201643259U CN 201643259 U CN201643259 U CN 201643259U CN 2010202977009 U CN2010202977009 U CN 2010202977009U CN 201020297700 U CN201020297700 U CN 201020297700U CN 201643259 U CN201643259 U CN 201643259U
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- China
- Prior art keywords
- circular step
- safety self
- cylindrical shell
- needle stand
- interior
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- Expired - Lifetime
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Abstract
The utility model discloses a safety self-destruction type injector. Compared with the prior art, the safety self-destruction type injector is characterized in that an inner needle seat is provided with an annular convex rib, the upper part of the annular convex rib is provided with a needle tube assembling cylinder, the lower part of the annular convex rib is provided with an inner needle seat locking cylinder in which a hollow cavity is arranged, at least two symmetrically distributed elastic fins are arranged in the cavity, a conical pull-back locking member is formed at the end of a core rod, and the diameter of the conical pull-back locking member is greater than the distance between the two elastic fins. By adopting the core rod structure with the conical pull-back locking member and matching with an embedded elastic fin locking structure, the safety self-destruction type injector realizes automatic locking of the core rod and the inner needle seat and has the advantages of stable locking state, obvious clamping effect and reasonable integral design structure of components, each component can realize one-step demolding, the injector can integrally realize full-automatic back assembly and has ingenious design concept, and by adopting automatic back assembly, the safety self-destruction type injector effectively improves the production efficiency of the product, reduces the comprehensive cost of the product and improves the market competitive power of the product.
Description
Technical field
This utility model 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, 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 buckle connecting rod in the motion cavity of this body of rod, a 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 the tank of this Connection Block and this buckle connecting rod, and this Connection Block and buckle connecting rod are coupled together.
Documents two, the patent No.: ZL200810024166.1, notification number: CN101284155, patentee: Otter (China) Medical Technology Limited, this case discloses a kind of " safe self-breaking syringe with greater force for preventing needle from withdrawing ", it comprises the piped installation portion that is the internal diameter contraction that overcoat straight tube top is provided with, in the overcoat straight tube, be provided with sealing-plug, described sealing-plug lower end is connected with the core bar that stretches out the overcoat straight tube, described core bar outer surface is provided with outer lug, correspondingly, be provided with the internal projection that outer lug is stopped at the overcoat straight tube, be plugged with the active pointer seat 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 are enclosed is injection storage chamber, the entrance point of needle tubing is communicated with injection storage chamber, movable needle stand sidewall is provided with outer lug, correspondingly, be 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, the axis in described 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, the installation portion inwall of described groove is provided with the depression in the form of a ring with groove fit, is provided with the elastic sealing ring with they interference fit in groove and depression.
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 ", include syringe cylinder, barrel type push bar, needle stand, injection needle, the O RunddichtringO, the stage clip thromboembolism, the compression spring, sealed rubber ring, be used to protect the entry needle protective cap and the piston of injection needle, described injection needle is fixed in the described needle stand, it is characterized in that: the front end of described syringe cylinder is provided with the fixture that is used for fixing needle stand and stage clip thromboembolism, one end of described needle stand and fixture is by O RunddichtringO sealing and fixing, described stage clip thromboembolism is fixedlyed connected with the other end of described fixture, is provided with the compression spring that needle stand and injection needle can be pushed barrel type push bar inside between described needle stand and stage clip thromboembolism; Described barrel type push bar is plugged in the described syringe cylinder, this barrel type push bar is positioned at the described sealed rubber ring of end outside suit of described syringe cylinder inside, the inboard is fixed with the piston that can enter barrel type push bar inside under the effect of described needle stand propulsive thrust, the other end of described barrel type push bar extends described syringe cylinder, and be equipped with one at this end that extends syringe cylinder and push away end, this pushes away end and includes an end of pressing hands and being connected with barrel type push bar, one end tight fit of described 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 enters the barrel type push bar degree of depth and sealing barrel type push bar, be provided with a through hole on this plectane, described is being that easy folded structure is connected by hands with the junction of plectane.
From above-mentioned documents, be not difficult to find out, existing safety self-destructing syringe overall structure more complicated, in order to realize the lock function of its expection, often on design drawing, adopt the multi-part assembling,, in actual production and 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 existing safety self-destructing syringe structure is further improved.
Summary of the invention
The purpose of this utility model 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, whole latch-up 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, the technical solution of the utility model is: a kind of safety self-destructing syringe, it comprises cylindrical shell, be provided with core bar in the cylindrical shell, core bar is socketed with plug near the place, end, 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: described tube neck inwall forms from top to bottom successively goes up circular step and following circular step, the cylindrical shell upper shed is extremely down a tube neck between the circular step, distance between last circular step and the following circular step is 2mm-12mm, 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, interior needle stand place is provided with the ring-type convex tendon, 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 utility model discloses 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, 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, each parts can be realized a demoulding, and syringe integral body can realize that the rear portion automatically assembles, and product design is skillfully constructed, automatization's rear portion assembling has effectively improved production efficiency of products, reduce the integrated cost of product, improved the competitiveness of product in market, had outstanding substantive distinguishing features and marked improvement compared to existing technologies.
Description of drawings
Fig. 1 is this utility model structural representation.
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, this utility model further is described.
This utility model is a kind of 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, 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 place, end of interior needle stand 5 is provided with needle tubing 6, it is different from prior art and is: described tube neck 4 inwalls form from top to bottom successively goes up circular step 7 and following circular step 8, 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, last circular step 7 is 2mm-18mm with the distance of cylindrical shell upper shed place, 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, 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 described 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, described ring-type convex tendon 9 top edges to interior needle stand locks cylinder 11 lower limb length less than length 0.1mm-5mm between last circular step 7 and the following circular step 8.
In the specific implementation, the length of described needle tubing assembling cylinder 10 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 described taper is 1mm-6mm.
In the specific implementation, the distance between described elastic fin 12 lower limbs and interior needle stand locking cylinder 11 bottoms is 0.2mm-3mm.
In the specific implementation, described core bar 2 places are provided with vee 14.
Above content be in conjunction with concrete preferred implementation to further describing that this utility model is done, can not assert that concrete enforcement of the present utility model is confined to above-mentioned these explanations.For this utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from this utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
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, 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: described tube neck (4) inwall forms from top to bottom successively goes up circular step (7) and following circular step (8), 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 diameter between last circular step (7) and the following circular step (8) is 2mm-8mm, last circular step (7) is 2mm-18mm with the distance of cylindrical shell upper shed place, 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), 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 described 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: described ring-type convex tendon (9) top edge to interior needle stand locks cylinder (11) lower limb length 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 described needle tubing assembling cylinder (10) 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 described taper is 1mm-6mm.
6. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the distance between described 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: described core bar (2) locates to be provided with vee (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202977009U CN201643259U (en) | 2010-08-19 | 2010-08-19 | Safety self-destruction type injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202977009U CN201643259U (en) | 2010-08-19 | 2010-08-19 | Safety self-destruction type injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201643259U true CN201643259U (en) | 2010-11-24 |
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ID=43108453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202977009U Expired - Lifetime CN201643259U (en) | 2010-08-19 | 2010-08-19 | Safety self-destruction type injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201643259U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446646A (en) * | 2012-08-24 | 2013-12-18 | 江苏亿乐医疗用品有限公司 | Core rod locking member |
-
2010
- 2010-08-19 CN CN2010202977009U patent/CN201643259U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446646A (en) * | 2012-08-24 | 2013-12-18 | 江苏亿乐医疗用品有限公司 | Core rod locking member |
| CN103446646B (en) * | 2012-08-24 | 2015-11-18 | 江苏亿乐医疗用品有限公司 | A kind of core bar locking piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190611 Address after: 213111 Baiyangqiao 66, Huangtiandang Village Committee, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province Patentee after: Changzhou Kangfulai Medical Supplies Co., Ltd. Address before: 213115 Sanhekou Industrial Development Zone, Changzhou City, Jiangsu Province Patentee before: Jiangsu Yile Medicial Article Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |