CN2798967Y - Needle-fixing pedestal for safety injection syringe - Google Patents
Needle-fixing pedestal for safety injection syringe Download PDFInfo
- Publication number
- CN2798967Y CN2798967Y CN 200520050241 CN200520050241U CN2798967Y CN 2798967 Y CN2798967 Y CN 2798967Y CN 200520050241 CN200520050241 CN 200520050241 CN 200520050241 U CN200520050241 U CN 200520050241U CN 2798967 Y CN2798967 Y CN 2798967Y
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- CN
- China
- Prior art keywords
- ring
- fixing base
- needle
- discount
- push rod
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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.)
- Expired - Lifetime
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a needle head fixing seat for a safety injection needle cylinder, which comprises a needle head seat, wherein a step ring is arranged below the needle head seat, a block ring made of rubber is annularly surrounded and formed by the step ring, and the middle position of the needle head seat is provided with a penetrating hole. The bottom part of the penetrating hole is provided with a bevel. The end edge of an opening of the bevel is provided with a buckle ring which is buckled with a buckle head, wherein the block ring with high deformation coefficient, which is made of rubber, is designed to cause the block ring to tightly press a ring groove at the front end of an injection cylinder. The error range which is permitted can be increased, the fraction defective can be reduced. In addition, the inner part of the fixing seat forms a buckle ring. When the injection is completed, the buckle head of a push rod is embedded with a buckle groove, the push rod is pulled back to cause the fixing seat and a needle head to pull back in an injection needle cylinder, and the needle head is no longer exposed outside.
Description
Technical field:
This utility model relates to syringe cylinder, refers to a kind of syringe needle fixing base of high-safety injection tube especially.
Background technology:
Traditional safety injector is provided with the hook part in the push rod front end, can hook the syringe needle fixing base with the hook part when utilizing push rod to be pushed forward to the end, fixing base and syringe needle can be recycled in the injection tube in the lump when push rod is pulled back backward, can not stab other people and pollute.
And in the manufacture of existing relevant syringe needle fixing base and injection tube all with the plastics jetting mold ejection formation of multi-point mould, because the ejaculation environmental condition of each die cavity is not identical completely, ubiquity diversity between a plurality of moulds when adding mass production, therefore the size between each syringe needle fixing base and injection tube is difficult to control accurately behind the ejection formation, and often causing the cooperation of the two to be difficult for, fraction defective is higher.
Therefore, the applicant uses previous application Taiwan patent as preceding case background, it is the structural principle of No. the 194836th, patent of invention " the syringe needle fixing base of high-safety injection tube ", research is single type with the improvement of two-piece type syringe needle holder in addition, and the fixing base after the improvement still may be implemented in original modular construction, need not to design in addition injection tube or other component die.
The utility model content:
Technical problem to be solved in the utility model is: at the deficiencies in the prior art, provide a kind of syringe needle fixing base that can reduce the high-safety injection tube of fraction defective greatly.
In order to solve the problems of the technologies described above, the technical scheme that this utility model adopted is: this syringe needle fixing base comprises a needle holder, the below of described needle holder is provided with drop and forms the single order ring, and enclose in rank ring ring and to be formed with the shelves ring that a rubber is made, and be provided with a perforation in the needle holder middle position, and be provided with an inclined-plane in this perforated bottom, and this inclined-plane opening ora terminalis is provided with a button system ring that engages with the discount button system of the push rod of syringe cylinder.
The discount of described push rod can be tapered or circular.The middle position of the discount of described push rod offers the gap of the button system elastic force between an increase discount and fixing base.Described button system ring is made by rubber.
Compared with prior art, the utility model has the advantages that: fixing base is provided with the shelves ring that utilizes the higher rubber of deformation coefficient to make, make the annular groove that is packed in the injection tube front end that it can be suitable, the scope of allowable error must be bigger, thereby can reduce the problem of fraction defective greatly, be provided with the button system ring of rubber system simultaneously on the fixing base in addition, its injection is finished, syringe needle can be retracted in syringe cylinder, outside no longer being exposed to.
Description of drawings:
Fig. 1 is the three-dimensional exploded view of this utility model place syringe cylinder;
Fig. 2 is 90 degree sectional stereograms of the present utility model;
Fig. 3 is a longitudinal profile sketch map of the present utility model;
Fig. 4 promotes to do sketch map before the push rod among Fig. 3;
Fig. 5 is that fixing base and syringe needle place the sketch map in injection tube;
Fig. 6 is another embodiment sketch map of the discount of the system of interlocking of the button system ring with fixing base.
The figure number explanation:
Syringe needle 1 pin lid 11
22 times inwalls 23 of last inwall
Fixing base 3 perforation 30
Inclined-plane 300 needle holder 31
32 grades of rings 33 of rank ring
The specific embodiment:
At first, please consult Fig. 1 and Fig. 2 simultaneously, as seen from the figure, so-called high-safety injection tube is by pin lid 11, one syringe needle 1, one injection tube 2 is formed with a fixing base 3 and push rod 4, wherein this injection tube 2 is that a hollow tube is formed with a storage tank 21, so the last inwall 22 in the injection tube 2 front end bores of storage tank 21 is provided with the bigger drop annular groove 24 of a bore, and be formed with one in annular groove 24 and support ring 25 and connect again and place down inwall 23, yet the bore of following inwall 23 is greater than last inwall 22 and less than the bore of annular groove 24, and the design of annular groove 24 mainly is the shelves ring 33 packing button systems for fixing base 3;
Central fixing base 3 is formed with a needle holder 31 and plants affixed for syringe needle 1, and being provided with a perforation 30 in middle position flows among the syringe needle 1 for medicaments, and in the perforation 30 bottoms be provided with an inclined-plane 300 to cater to the conical surface of discount 41, these inclined-plane 300 opening ora terminalis are provided with a button system ring 34, this button system ring 34 and discount 41 buckles;
Yet, be provided with drop in addition in needle holder 31 belows and form single order ring 32, the ring of this rank ring 32 encloses and is formed with one grade of ring 33, this shelves ring 33 is the rubber material, but and in these fixing base 3 one ejection formations, therefore and the annular groove 24 of injection tube 2 and to support the acceptable range of error of 25 on ring also just higher because the deformation coefficient of rubber material is bigger,, therefore just can significantly reduce the problem of fraction defective.
In addition, the end that sees push rod 4 again in addition is provided with a tapered discount 41 and a glue head 42 that coats, wherein this discount 41 can fall into the button system ring 34 on inclined-plane 300, only form the structural design that can unidirectional pushing and can't deviate from, so when being pushed into before the push rod 4 when most, in case discount 41 with can't be again after button system ring 34 combine and fixing base 3 disengagings.
Please consult Fig. 3 and Fig. 4 more simultaneously, when injection, push rod 4 pushes away before in the storage tank 21 of injection tube 2, in case falling into behind the button system ring 34, discount 41 finishes the joint that can not break away from, at this moment, discount 41 is finished with the inclined-plane 300 of perforation 30 and is pasted, and this design one is to wish that medicament can be injected completely, the 2nd, allow the acceptable error amount of taper discount 41 and contacting of inclined-plane 300 increase, and firm engaging with fixing base 3;
Otherwise, push rod 4 is pulled back, this moment is because button system ring 34 is the rubber material, its deformable coefficient is also just bigger, so when the button system strength of button system ring 34 and discount 41 greater than the packing of baffle ring 33 in annular groove 24, and push rod 4 is pulled back, make that baffle ring 33 can compulsory disengaging annular groove 24 and support and encircle 25 resistance, allow whole fixing base 3 and syringe needle 1 retraction put in the storage tank 21 of injection tube 1 to finish the operation that safe injection needle places, as shown in Figure 5.
Other sees also Fig. 6, yet in order to consider that the discount 41 and the button system strength of button system ring 34 must be greater than the packing of baffle ring 33 in annular groove 24, ability is pulling back holder 3 and syringe needle 1 safety firmly, so the part in discount 41 needs to implement with tapered structure, also because of like this, the maximum gauge of tapered discount 41 must be more than or equal to the maximum distortion coefficient of button system ring 34, therefore the size of discount 41 just must be very exquisite, so this embodiment is provided with a gap 410 in discount 41, just can increase the numerical value of tapered discount 41 maximum gauges thus greater than button system ring 34.
Fraction defective when producing in order to reduce, wherein fixing base 3 is the key component of general safety syringe, because fixing base 3 is positioned the yield problem that syntagmatic among the injection tube 2 affects the general safety syringe greatly, so complex technique by rubber and plastic material, and make the fixing base 3 can be in the suitable packing of injection tube 2 front ends, because the deformation coefficient of rubber material is bigger, so be implemented on fixing base 3 baffle rings 33, acceptable range of error is also just higher, the relative problem that also just can significantly reduce yield.
Comprehensive the above, the syringe needle fixing base of this utility model high-safety injection tube is real in considering yield and the practicality and the safety of integral production.
Claims (4)
1, a kind of syringe needle fixing base of high-safety injection tube, this fixing base comprises a needle holder, it is characterized in that: the below of described needle holder is provided with drop and forms the single order ring, and enclose in rank ring ring and to be formed with the shelves ring that a rubber is made, and be provided with a perforation in the needle holder middle position, and be provided with an inclined-plane in this perforated bottom, and this inclined-plane opening ora terminalis is provided with a button system ring that engages with the discount button system of the push rod of syringe cylinder.
2, the syringe needle fixing base of high-safety injection tube as claimed in claim 1, it is characterized in that: the discount of described push rod can be tapered or circular.
3, the syringe needle fixing base of high-safety injection tube as claimed in claim 1 is characterized in that: the middle position of the discount of described push rod offers the gap of the button system elastic force between an increase discount and fixing base.
4, the syringe needle fixing base of high-safety injection tube as claimed in claim 1 is characterized in that: described button system ring is made by rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050241 CN2798967Y (en) | 2005-02-02 | 2005-02-02 | Needle-fixing pedestal for safety injection syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050241 CN2798967Y (en) | 2005-02-02 | 2005-02-02 | Needle-fixing pedestal for safety injection syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798967Y true CN2798967Y (en) | 2006-07-26 |
Family
ID=36841466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520050241 Expired - Lifetime CN2798967Y (en) | 2005-02-02 | 2005-02-02 | Needle-fixing pedestal for safety injection syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798967Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA010544B1 (en) * | 2006-12-25 | 2008-10-30 | Хунг-Чи Хуанг | Safety syringe device |
| WO2013127037A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle retractable-type replaceable-needle safe self-destructing syringe |
-
2005
- 2005-02-02 CN CN 200520050241 patent/CN2798967Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA010544B1 (en) * | 2006-12-25 | 2008-10-30 | Хунг-Чи Хуанг | Safety syringe device |
| WO2013127037A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle retractable-type replaceable-needle safe self-destructing syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: VANTE BIOCHEMICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LUO ZHENGYI Effective date: 20060714 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060714 Address after: The British Virgin Islands Teshilalu city building post box No. 3321 silicon Wright Patentee after: Vantex Biotechnology Co., Ltd. Address before: Taiwan city of Taipei province Daan District Guangfu Road 33 Lane 1-1 Patentee before: Luo Zhengyi |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150202 Granted publication date: 20060726 |