CN102526842A - Safety injector needle seat structure - Google Patents
Safety injector needle seat structure Download PDFInfo
- Publication number
- CN102526842A CN102526842A CN2010105852067A CN201010585206A CN102526842A CN 102526842 A CN102526842 A CN 102526842A CN 2010105852067 A CN2010105852067 A CN 2010105852067A CN 201010585206 A CN201010585206 A CN 201010585206A CN 102526842 A CN102526842 A CN 102526842A
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- China
- Prior art keywords
- safety injector
- needle stand
- pedestal
- needle seat
- injector needle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a safety injector needle seat structure. The safety injector needle seat structure is different from the prior art in that: a needle seat body consists of an upper needle tube base and a lower locking base; an annular limiting rib is formed on a joint between the upper needle tube base and the lower locking base; the inner cavity of the lower locking base is hollow; the inner wall of the hollow cavity is provided with at least two symmetrically-distributed elastic wings; and a plane is formed on the end face of each elastic wing. A clamp type elastic wing structure is adopted, so that automatic locking of a core bar and a needle seat body can be realized during use, a locking state is stable, a clamping effect is remarkable, and the overall design structure of a component is reasonable; one-time demolding and back full-automatic assembly of the component can be realized, and a product design concept is skillful; 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; and compared with the prior art, the safety injector needle seat structure has the advantages of substantial characteristic and remarkable advancement.
Description
Technical field
The present invention relates to technical field of medical, a kind of specifically safety injector needle stand structure, particularly its mechanical connecting structure.
Background technology
Documents one; 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.
Documents two; 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 three, 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.
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; The very complicacy that often locking mechanism is designed; And need carry out the multi-part assembling, effectively increase the manufacturing cost of product, and some parts can't be accomplished in a demoulding; Increased the die sinking difficulty again, and all parts can't be realized the assembling of rear portion automatization.
So still need the locking member structure of existing safety self-destructing syringe be further improved.
Summary of the invention
The object of the present invention is to provide a kind of safety injector needle stand structure; It adopts fixture type elastic fin structure, and the integral locks fixed structure is simple, stable working state; Can realize that a demoulding and rear portion automatically assemble, 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 injector needle stand structure, and it comprises the needle stand body; It is characterized in that: said needle stand body is made up of winding the needle tube pedestal and following locking pedestal; The winding the needle tube pedestal forms the annular stop convex tendon with the following joint of locking pedestal, and the height of annular stop convex tendon is 0.3mm-2.3mm, the annular stop convex tendon overall diameter be 2mm-7mm; Under lock pedestal inner chamber hollow; The inwall place of hollow cavity is provided with two elastic fins that are symmetrical distribution at least, and the end face of elastic fin forms a plane, and the distance between plane and the annular stop convex tendon is 1mm-5mm.
The invention discloses a kind of safety injector needle stand structure, it adopts fixture type elastic fin structure, in use can realize automatically locking of core bar and needle stand body; And lock-out state is stable, and the engaging effect is remarkable, and the parts global design is rational in infrastructure; These parts can realize that a demoulding and rear portion automatically assemble; 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.
The specific embodiment
With reference to the accompanying drawings, the present invention is further described
The present invention is a kind of safety injector needle stand structure; It comprises the needle stand body, it is characterized in that: said needle stand body is made up of winding the needle tube pedestal 1 and following locking pedestal 2, the joint formation annular stop convex tendon 3 of winding the needle tube pedestal 1 and following locking pedestal 2; The height of annular stop convex tendon 3 is 0.3mm-2.3mm; Annular stop convex tendon 3 overall diameter be 2mm-7mm, following locking pedestal 2 inner chamber hollows, the inwall place of hollow cavity is provided with two elastic fins 4 that are symmetrical distribution at least; The end face of elastic fin 4 forms a plane 5, and the distance between plane 5 and the annular stop convex tendon 3 is 1mm-5mm.
In the specific implementation, 2 are cylindric, and its overall diameter is 1.8mm-6.8mm.
In the specific implementation, said annular stop convex tendon 3 overall diameter more than or equal under lock pedestal 2 overall diameters, greater than maximum be 0.3mm.
In the specific implementation, said locking pedestal 2 intracavity diameters on elastic fin 4 tops down are 0.2mm-3mm.
In the specific implementation, the distance between said elastic fin 4 lower limbs and following locking pedestal 2 bottoms is 0.2mm-3mm.
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 (5)
1. safety injector needle stand structure; It comprises the needle stand body; It is characterized in that: said needle stand body is made up of winding the needle tube pedestal (1) and following locking pedestal (2); Winding the needle tube pedestal (1) and down the joint of locking pedestal (2) form annular stop convex tendon (3), the height of annular stop convex tendon (3) is 0.3mm-2.3mm, annular stop convex tendon (3) overall diameter be 2mm-7mm; Under lock pedestal (2) inner chamber hollow; The inwall place of hollow cavity is provided with two elastic fins (4) that are symmetrical distribution at least, and the end face of elastic fin (4) forms a plane (5), and the distance between plane (5) and the annular stop convex tendon (3) is 1mm-5mm.
2. a kind of safety injector needle stand structure according to claim 1 is characterized in that: said locking pedestal (2) down is cylindric, and its overall diameter is 1.8mm-6.8mm.
3. a kind of safety injector needle stand structure according to claim 1 is characterized in that: said annular stop convex tendon (3) overall diameter more than or equal under lock pedestal (2) overall diameter, greater than maximum be 0.3mm.
4. a kind of safety injector needle stand structure according to claim 1 is characterized in that: said locking pedestal (2) intracavity diameter on elastic fin (4) top down is 0.2mm-3mm.
5. a kind of safety injector needle stand structure according to claim 1 is characterized in that: said elastic fin (4) lower limb and the distance of locking down between pedestal (2) bottom are 0.2mm-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105852067A CN102526842A (en) | 2010-12-13 | 2010-12-13 | Safety injector needle seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105852067A CN102526842A (en) | 2010-12-13 | 2010-12-13 | Safety injector needle seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102526842A true CN102526842A (en) | 2012-07-04 |
Family
ID=46335644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105852067A Pending CN102526842A (en) | 2010-12-13 | 2010-12-13 | Safety injector needle seat structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102526842A (en) |
-
2010
- 2010-12-13 CN CN2010105852067A patent/CN102526842A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |