CN100496630C - Improved safety injection tube push rod and needle seat combined structure - Google Patents
Improved safety injection tube push rod and needle seat combined structure Download PDFInfo
- Publication number
- CN100496630C CN100496630C CNB2006100147567A CN200610014756A CN100496630C CN 100496630 C CN100496630 C CN 100496630C CN B2006100147567 A CNB2006100147567 A CN B2006100147567A CN 200610014756 A CN200610014756 A CN 200610014756A CN 100496630 C CN100496630 C CN 100496630C
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- ring
- needle stand
- push rod
- stack shell
- conjunction
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Abstract
Disclosed is an improved combination structure between a push rod and a needle seat of a safety injection syringe, which includes: a syringe body, the syringe body is like a tube shape, and the inner edge of the syringe body is the straight tube shape, the two ends of the syringe body are defined as a front end and a rear end; the needle seat is plugged in the inner edge of the syringe body, the needle seat has a fixed ring, and the outer edge is nested with a labyrinth ring, one end of the fixed ring has an internal diameter so as to form a containing space, and also has an associative ring piece extending as one body and gradually contracting along the axial direction, and the juncture of the inner edge of the associative ring piece and the fixed ring has a folding line, and a containing space is arranged between the fixed ring and the associative ring piece, the associative ring piece can be reversely folded along the folding line into the containing space, fixed ring is provided with a spile protruding out of the syringe body for being nested with a needle; the push rod has a plug part for threading the inner edge of the syringe body, the peripheral edge of the plug part is nested with the labyrinth ring, the front end of the plug part combines with the associative ring piece of the needle seat. The invention can fulfill the safety and convenience of using, and the forming structure of the needle seat associative ring piece is rather simple, which can largely reduce the making cost.
Description
Technical field
The present invention relates to a kind of push rod and needle stand combined structure of improved high-safety injection tube.
Background technology
To shown in Figure 12, existing high-safety injection tube is made up of a stack shell 5, a needle stand 6 and a push rod 7 as Figure 11, and these stack shell 5 inner edges are straight tube-like, and its inner rim has a flange 51 near the front end position, and these stack shell 5 front ends have two-phase cross-notching 52.
Above-mentioned needle stand 6 is that plug is located at stack shell 5 inner edges, and needle stand 6 has a retainer ring 61, retainer ring 61 has several grabs 62, each grab 62 has a hook portion 621, slot 52 for dogging in stack shell 5, and grab 62 outer rims have a force section 622, have spacing in hook portion 62 and 61 of retainer rings, stop that with the flange 51 by stack shell 5 retainer ring 61 cooperates with grab 62 and locatees this needle stand 6.And retainer ring 61 has an intubate 63 that protrudes out stack shell 5, and the position of intubate 63 corresponding grabs 62 has a draw-in groove 631, and grab 62 corresponding draw-in grooves 631 have a holding section 623, can locate grab 62 when being embedded in draw-in groove 631, so that hook portion 621 breaks away from stack shells 5.And needle stand 6 one ends are extended with a joint portion 64, and this joint portion 64 is made up of the lamellar body 641 of most deflections, and each lamellar body 641 has a stopper 642.And a sheathed syringe needle 65 and a protecting cover 66 on intubate 63.
And push rod 7 has a piston part 71, for being arranged in stack shell 5 inner edges, piston part 71 front ends are protruding with a joint portion 72, joint portion 72 has two alar parts 721, it extends a catch 722 again respectively and forms rhombohedral structure, and joint portion 72 stretches through joint portion 64 and makes each catch 722 be subjected to joint portion 64 stoppers 642 and stops, so that joint portion 72 can mutually combine with joint portion 64.
In sum, the present invention is owing to most lamellar bodies 641 complex structures of needle stand 6 joint portions 64, and it is made needs higher precision to combine with joint portion 72, and improves manufacturing cost greatly.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome the above-mentioned defective that prior art exists, and provide a kind of push rod and needle stand combined structure of improved high-safety injection tube, its needle stand one is extended in conjunction with ring plate, its invagination and be hook-shaped form, make the combination that stretches through of push rod piston part in conjunction with ring plate, driving needle stand in order to push rod moves backward is accommodated in the stack shell, above-mentioned push rod and needle stand integrated structure can reach safe in utilization and effect convenience, and, this needle stand is comparatively simple in conjunction with the formation structure of ring plate, can reduce manufacturing cost greatly.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of push rod of improved high-safety injection tube and the combined structure of needle stand is characterized in that, comprising: a stack shell, this stack shell in a tubular form, and this stack shell inner edge is straight tube-like, two ends of this stack shell are defined as a front end and a rear end; One needle stand, it is that plug is located at this stack shell inner edge, this needle stand has a retainer ring, its outer rim is arranged with a seal ring, this retainer ring one end has an internal diameter and constitutes an accommodation space, and have one extend and be axial convergent in conjunction with ring plate, and should have a broken line in conjunction with ring plate inner edge and retainer ring intersection, and this retainer ring combines with this and has an accommodation space between ring plate, this in conjunction with ring plate from the broken line opisthotonos in accommodation space, this retainer ring has an intubate that protrudes out stack shell for socket one syringe needle; One push rod, it has a piston part, supplies to be arranged in this stack shell inner edge, the sheathed seal ring of this piston part periphery, this piston part front end combines ring plate with needle stand and mutually combines.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein the piston part front end is protruding with a joint portion, this push rod joint portion front end has a ring projection, this ring projection circumference is less than the largest circumference of this needle stand in conjunction with the ring plate inner edge, contiguous this ring projection in this joint portion has one and is acute angle-shaped annular groove, encircles projection this needle stand that stretches through for this piston part and makes in conjunction with ring plate penetrating in conjunction with ring plate and wherein combine ring plate with needle stand and mutually combine.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein the rear end part of stack shell inner edge has a stop part, this stop part is a plurality ofly to be extended axially and the back hook portion of evagination radially by stack shell, for needle stand contact location, and the bigger anchor ring section of a circumference is extended in this stack shell rear end, has one at interval between this anchor ring section and each the hook portion outside, back.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein needle stand is a plurality of double wedges in conjunction with the end face of ring plate, and should be in conjunction with ring plate in adjacent fold line a plurality of perforation that are periphery.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein needle stand is to be made of four sections lamellar bodies in conjunction with ring plate.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein stack shell inner edge rear end is extended the bigger anchor ring section of a circumference from inside to outside, and a stop part of axial convergent is extended and be to the rear end part of the described stack shell inner edge one that makes progress.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein the end face of stop part is a plurality of outer double wedges, and this stop part and anchor ring section intersection have broken line in, each outer double wedge lower edge is provided with second perforation in abutting connection with interior broken line, make this stop part have pliability, with with the inner edge opisthotonos of this stop part, and make this stop part be hook-shaped form towards stack shell.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein needle stand is wavy lamellar body in conjunction with ring plate, and has a broken line in conjunction with ring plate outer rim and retainer ring intersection.
The push rod of aforesaid improved high-safety injection tube and needle stand combined structure, wherein push rod is the press section away from an end of piston part, and with between the piston part, from top to bottom have the ring, that fractures in the press section of this push rod respectively and only lift up ring and lift up ring, and this girth of lifting up ring is greater than the girth of only lifting up ring, makes only to lift up ring and lift up interannular and form one and fasten the space with rising.
The invention has the beneficial effects as follows that its needle stand one is extended in conjunction with ring plate, its invagination and be hook-shaped form makes the combination in conjunction with ring plate that stretches through of push rod piston part, drives needle stand in order to push rod moves backward and is accommodated in the stack shell.Above-mentioned push rod and needle stand integrated structure can reach safe in utilization and effect convenience, and this needle stand is comparatively simple in conjunction with the formation structure of ring plate, can reduce manufacturing cost greatly.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the exploded perspective sketch map of first embodiment of the invention
Fig. 2 is the combination schematic perspective view of first embodiment of the invention
Fig. 3 is the first embodiment of the invention needle stand in conjunction with the ring plate three-dimensional appearance sketch map of invagination state not
Fig. 4 is the plan cross-section structure chart of first embodiment of the invention
Fig. 5 is one of user mode sketch map of first embodiment of the invention
Fig. 6 be first embodiment of the invention the user mode sketch map two
Fig. 7 is that the needle stand of second embodiment of the invention is in conjunction with the ring plate three-dimensional appearance sketch map of invagination state not
Fig. 8 is that the needle stand of third embodiment of the invention is in conjunction with the ring plate three-dimensional appearance sketch map of invagination state not
Fig. 9 is that the needle stand of fourth embodiment of the invention is in conjunction with the ring plate three-dimensional appearance sketch map of invagination state not
Figure 10 is the user mode sketch map of fourth embodiment of the invention
Figure 11 is the push rod of existing high-safety injection tube and the exploded perspective sketch map of needle stand integrated structure
Figure 12 is the push rod of existing high-safety injection tube and the section plan of needle stand integrated structure
The specific embodiment
See also Fig. 1 to Fig. 6, be the selected example structure of the present invention shown in the figure.
Safety syringe cylinder embodiment as shown in Figure 1, comprising:
One stack shell 1, generally in a tubular form, this stack shell 1 inner edge is a straight tube-like, and two ends of this stack shell 1 are defined as a front end 11 and a rear end 12, and this inner edge has a flange 13 near the part of front end 11, and this flange 13 has an angular cut 131; Rear end 12 parts of this stack shell 1 inner edge have a stop part 14, stop part 14 is 4 equidistant back hook portions 141 that are provided with in the present embodiment, and the bigger anchor ring section 15 of a circumference is extended in this stack shell 1 rear end 12, has an interval 16 between this anchor ring section 15 and this back hook portion 141 outsides.
One needle stand 2, it is to fill in to be located in this stack shell 1 front end stopped by flange 13, this needle stand 2 has a retainer ring 21, its outer rim is arranged with a seal ring 211, these retainer ring 21 1 ends have an internal diameter and constitute an accommodation space 23, and have one extend and be axial convergent in conjunction with ring plate 22, this end face in conjunction with ring plate 22 has most double wedges 221, and should have an indent broken line 222 in conjunction with ring plate 22 inner edges and retainer ring 21 intersections, and be provided with perforation 223 in abutting connection with broken line at each double wedge 221 lower edge, make this coupling collar 22 have preferable pliability, will being somebody's turn to do, and make this be hook-shaped form in conjunction with ring plate 22 in conjunction with the interior opisthotonos of ring plate 22 to accommodation space 23.This retainer ring 21 end in addition has an intubate 24 that protrudes out stack shell 1 for socket one syringe needle 25, and this syringe needle 25 can put a protecting cover 251.
One push rod 3, has a piston part 31, for being arranged in this stack shell 1 inner edge, these piston part 31 peripheries are installed a seal ring 311, for reaching in conjunction with needle stand, piston part 31 front ends of this utility model embodiment are protruding with a joint portion 32, and these joint portion 32 front ends have a ring projection 33, this ring projection 33 has the Zhou Jing less than this needle stand 2 accommodation spaces 23, and these joint portion 32 adjacent these ring projection 33 peripheries have one and are acute angle-shaped annular groove 321.
See also Fig. 5, after syringe uses, user needs to push to push rod 3 in the stack shell again, because 33 week of ring projection, the footpath was greater than these needle stand 2 coupling collars 22 end diameters, these push rod 3 ring projections 33 need crowded and pass needle stand 2 in conjunction with ring plate 22, and go deep in these needle stand 2 accommodation spaces 23, and this needle stand 2 is restored and imbed in conjunction with ring plate 22 in this annular groove 321 and mutually combine with this push rod 3.
See also Fig. 6,, and needle stand 2 and syringe needle 25 can be accommodated in the stack shell 1 when application of force pull push rod 3 interlock needle stands 2 backward.Backward during pull, the back hook portion 141 of this stop part 14 stops needle stand 2, and can avoid needle stand 2 and syringe needle 25 etc. to detach stack shell 1 at push rod 3, and broken this push rod 3 protrudes stack shells 1, and needle stand 2 and syringe needle 25 are accommodated in the stack shell 1.
The push rod of syringe cylinder in sum and needle stand integrated structure, except that the effect that reaches safe in utilization and convenience, this needle stand 2 is comparatively simple in conjunction with the formation structure of ring plate 22, and can reduce the Mold Making cost greatly.
Certainly, still there are many examples in the present invention, and is for example shown in Figure 7, and it is the second embodiment of the present invention, and wherein, needle stand 2A is made of four sections lamellar bodies in conjunction with ring plate 22A.
See also Fig. 8, it is the third embodiment of the present invention, and wherein, needle stand 2B's is wavy lamellar body in conjunction with ring plate 22B, and has a broken line 222B in conjunction with ring plate 22B outer rim and retainer ring 21B intersection, makes this in conjunction with ring plate 22B preferable pliability be arranged.
See also Fig. 9 and Figure 10, it is the fourth embodiment of the present invention, comprise: a stack shell 1C, this stack shell 1C generally in a tubular form, and this stack shell 1C inner edge is a straight tube-like, two ends of this stack shell 1C are defined as a front end 11C and a rear end 12C, and this stack shell 1C inner edge has a flange 13C near the part of front end 11C, and this flange 13C has an angular cut 131C.This stack shell 1C inner edge rear end is extended the bigger anchor ring section 15C of a circumference from inside to outside, and the rear end 12C of this stack shell 1C inner edge partly upwards one extend and be a stop part 14C of axial convergent, the end face of this stop part 14C generally is a plurality of outer double wedge 141C, and this stop part 14C and anchor ring section 15C intersection have broken line 142C in, and double wedge 141C lower edge is provided with the second perforation 143C in abutting connection with interior broken line 142C outside each, so that this stop part 14C has preferable pliability, with with the inner edge opisthotonos of this stop part 14C, and make this stop part 14C be hook-shaped form towards stack shell 1C.
One needle stand 2C, be to fill in to be located in this stack shell 1C front end stopped by flange 13C, this needle stand 2C has a retainer ring 21C, its outer rim is arranged with seal ring 211C, this retainer ring 21C one end has an internal diameter and constitutes an accommodation space 23C, and have one extend and be axial convergent in conjunction with ring plate 22C, this end face in conjunction with ring plate 22C has most double wedge 221C, and should have an indent broken line 222C in conjunction with ring plate 22C inner edge and retainer ring 21C intersection, each double wedge 221C lower edge is provided with in abutting connection with the perforation 223C of indent broken line 222C, so that this coupling collar 22C has preferable pliability, with should be, and make this be hook-shaped form in conjunction with ring plate 22C in conjunction with ring plate 22C opisthotonos in accommodation space 23C.This retainer ring 21C end in addition has an intubate 24C who protrudes out stack shell 1C for socket one syringe needle 25C, and this syringe needle 25C can put a protecting cover 251C.
One push rod 3C, it has a press section 34C and a piston part 31C, and for being arranged in this stack shell 1C inner edge, this piston part 31C periphery is installed a seal ring 311C.For in conjunction with needle stand 2C, the piston part 31C front end of present embodiment is protruding with a joint portion 32C, this joint portion 32C front end has a ring projection 33C, this ring projection 33C has the Zhou Jing less than this needle stand 2C accommodation space 23C, and adjacent this ring projection of this joint portion 32C 33C periphery has one and is acute angle-shaped annular groove 321C, and between the press section 34C of this push rod 3C and piston part 31C, from top to bottom has the ring 35C that fractures respectively, one only lifts up ring 36C and lifts up ring 37C together, and this girth of lifting up ring 37C is greater than the girth of only lifting up ring 36C, make and only lift up ring 36C and lift up that formation one fastens space 38C between ring 37C with rising, this stop part 14C can be equipped in to fasten in the 38C of space, whereby, also can have foregoing effect.
Claims (9)
1. the combined structure of the push rod of an improved high-safety injection tube and needle stand is characterized in that, comprising:
One stack shell, this stack shell in a tubular form, and this stack shell inner edge is straight tube-like, two ends of this stack shell are defined as a front end and a rear end;
One needle stand, it is that plug is located at this stack shell inner edge, this needle stand has a retainer ring, its outer rim is arranged with a seal ring, this retainer ring one end has an internal diameter and constitutes an accommodation space, and have one extend and be axial convergent in conjunction with ring plate, and should have a broken line in conjunction with ring plate inner edge and retainer ring intersection, and this retainer ring combines with this and has an accommodation space between ring plate, this in conjunction with ring plate from the broken line opisthotonos in accommodation space, this retainer ring has an intubate that protrudes out stack shell for socket one syringe needle;
One push rod, it has a piston part, supplies to be arranged in this stack shell inner edge, the sheathed seal ring of this piston part periphery, this piston part front end combines ring plate with needle stand and mutually combines.
2. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure, it is characterized in that described piston part front end is protruding with a joint portion, this push rod joint portion front end has a ring projection, this ring projection circumference is less than the largest circumference of this needle stand in conjunction with the ring plate inner edge, contiguous this ring projection in this joint portion has one and is acute angle-shaped annular groove, encircles projection this needle stand that stretches through for this piston part and makes in conjunction with ring plate penetrating in conjunction with ring plate and wherein combine ring plate with needle stand and mutually combine.
3. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure, the rear end part that it is characterized in that described stack shell inner edge has a stop part, this stop part is a plurality ofly to be extended axially and the back hook portion of evagination radially by stack shell, for needle stand contact location, and the bigger anchor ring section of a circumference is extended in this stack shell rear end, has one at interval between this anchor ring section and each the hook portion outside, back.
4. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure is characterized in that described needle stand is a plurality of double wedges in conjunction with the end face of ring plate, and should be in conjunction with ring plate in adjacent fold line a plurality of perforation that are periphery.
5. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure is characterized in that described needle stand is to be made of four sections lamellar bodies in conjunction with ring plate.
6. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure, it is characterized in that described stack shell inner edge rear end extends the bigger anchor ring section of a circumference from inside to outside, a stop part of axial convergent is extended and be to the rear end part of the described stack shell inner edge one that makes progress.
7. the push rod of improved high-safety injection tube according to claim 6 and needle stand combined structure, the end face that it is characterized in that described stop part is a plurality of outer double wedges, and this stop part and anchor ring section intersection have broken line in, each outer double wedge lower edge is provided with second perforation in abutting connection with interior broken line, make this stop part have pliability, with with the inner edge opisthotonos of this stop part, and make this stop part be hook-shaped form towards stack shell.
8. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure, what it is characterized in that described needle stand is wavy lamellar body in conjunction with ring plate, and has a broken line in conjunction with ring plate outer rim and retainer ring intersection.
9. the push rod of improved high-safety injection tube according to claim 1 and needle stand combined structure, it is characterized in that described push rod is the press section away from an end of piston part, and with between the piston part, from top to bottom have the ring, that fractures in the press section of this push rod respectively and only lift up ring and lift up ring, and this girth of lifting up ring is greater than the girth of only lifting up ring, makes only to lift up ring and lift up interannular and form one and fasten the space with rising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100147567A CN100496630C (en) | 2006-07-11 | 2006-07-11 | Improved safety injection tube push rod and needle seat combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100147567A CN100496630C (en) | 2006-07-11 | 2006-07-11 | Improved safety injection tube push rod and needle seat combined structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101104087A CN101104087A (en) | 2008-01-16 |
| CN100496630C true CN100496630C (en) | 2009-06-10 |
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ID=38998294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100147567A Expired - Fee Related CN100496630C (en) | 2006-07-11 | 2006-07-11 | Improved safety injection tube push rod and needle seat combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100496630C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201194970Y (en) * | 2008-04-16 | 2009-02-18 | 英属维尔京群岛圣采科技投资有限公司 | Safety injector |
| TWI527602B (en) | 2011-11-07 | 2016-04-01 | Fan Xiao Yi | Ordinary safety syringes |
-
2006
- 2006-07-11 CN CNB2006100147567A patent/CN100496630C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101104087A (en) | 2008-01-16 |
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| C14 | Grant of patent or utility model | ||
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Owner name: FAN XIAOYI Free format text: FORMER OWNER: CHEN ZHUOYING Effective date: 20150506 Owner name: LI XIN Effective date: 20150506 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150506 Address after: Zhongxing Road, Taichung, Taichung, China, No. 123, Lane 36, Taiwan, China Patentee after: Fan Xiaoyi Patentee after: Li Xinchun Address before: Taiwan, China Patentee before: Chen Zhuoying |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20180711 |
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| CF01 | Termination of patent right due to non-payment of annual fee |