CN2584203Y - Disposable destroy-type syringe - Google Patents
Disposable destroy-type syringe Download PDFInfo
- Publication number
- CN2584203Y CN2584203Y CN 02286544 CN02286544U CN2584203Y CN 2584203 Y CN2584203 Y CN 2584203Y CN 02286544 CN02286544 CN 02286544 CN 02286544 U CN02286544 U CN 02286544U CN 2584203 Y CN2584203 Y CN 2584203Y
- Authority
- CN
- China
- Prior art keywords
- core bar
- lug boss
- positive stop
- stop lug
- raised line
- Prior art date
- 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 - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a disposable destroying type syringe. At least one stop boss and at least one sand grip which can be crossed are arranged on the internal wall of a plastic outer sleeve, and a distance between the sand grip which can be crossed and the adjacent stop boss is the same to the thickness a of a fin. The radial width of at least one fin in a cross core bar is shorter than the radial widths of other fins, and the length of a short fin is shorter than the heights b of the other fins protruded out of an inner wall corresponding to a first stop boss. An incomplete disc-shaped cam with a spiral groove is arranged on a core bar and positioned on the lower part of a core bar head to which a rubber piston is movably connected, a pricking needle is movably matched with a needle hole of the rubber piston, and the root of the pricking needle is inserted in the spiral groove of the incomplete disc-shaped cam. Thin-wall pits are arranged on a sealing bottom of the plastic outer sleeve and a position corresponding to the pricking needle. The occurrence of the positional displacement of the pricking needle of the rubber piston and the thin-wall pits of the plastic outer sleeve is avoided in the injection of the utility model because the core bar is guided and propelled to prevent a mis-operation. After liquid extraction is completed, the core bar is rotated to push the pricking needle to be extended by the incomplete disc-shaped cam, and the positions of the thin-wall pits on the sealing bottom of the plastic outer sleeve are penetrated by the pricking needle.
Description
Technical field
This utility model relates to a kind of disposable syringe.
Background technology
The Chinese utility model patent description that China Patent No. is 00247948.6, name is called " disposable automatic damage syringe " discloses a kind of disposable syringe, it is made up of core bar, rubber piston, plastic wrapper, syringe needle, and a little pin is installed in the rubber piston.When injection finishes, when rubber piston touches the plastic wrapper back cover, little needle tip has penetrated plastic wrapper back cover end wall, this moment, plastic wrapper back cover end formed the aperture of a perforation, when pulling back push rod and rubber piston again, air enters plastic wrapper from aperture, and medicinal liquid can not suck in the plastic wrapper from syringe needle, be that syringe is damaged automatically, can not have reused.Though above-mentioned disposable automatic damage syringe is simple in structure, but because the plastic wrapper wall thickness, normal injection power can not make little needle tip penetrate the plastic wrapper back cover, and because needle point is forthright and do not have a limiting component, maloperation easily causes and does not use the phenomenon of promptly scrapping.
The utility model content
The disposable damage type syringe that the purpose of this utility model is to propose a kind of convenient thorn needle penetration plastic wrapper back cover and can avoids maloperation.
The utlity model has plastic wrapper and cross core bar, one end of plastic wrapper has crimping, the other end is a back cover, the back cover end has conehead, one end of core bar has the hands of pressing, and the other end has pin head, for achieving the above object, the inwall of crimping one end of plastic wrapper is provided with at least one positive stop lug boss and at least one raised line of getting over, can get over raised line and contiguous positive stop lug boss on inwall at a distance of suitable fin thickness a; The radial width of at least one fin is shorter than the radial width of other fin in the cross core bar, forms the brachypterism sheet, and the brachypterism sheet is shorter than the height b that suitable first positive stop lug boss of other fin protrudes inwall; On the core bar and be in the pin head bottom and be provided with incomplete disk cam, not exclusively disk cam is provided with helicla flute; The rubber piston that has been dynamically connected on the pin head of core bar, the pin hole of pricker and rubber piston movingly, the root of pricker is plugged in the helicla flute of incomplete disk cam; Be provided with pit with thin wall on the plastic wrapper back cover and on the position of pricker correspondence.
Above-mentioned positive stop lug boss and can get over raised line and protrude the height b of inwall all between 0.10～0.35mm.
Above-mentioned cross section of getting over raised line can be a circular arc, also can be triangle.
The thickness of above-mentioned pit with thin wall is 0.2～0.35mm.
Above-mentioned pricker can be a metal needle, also can be the plastics pin.
Can be provided with first positive stop lug boss on the inwall of plastic wrapper, contiguous first positive stop lug boss is provided with first and can gets over raised line, is provided with a brachypterism sheet in the cross core bar.
First, second relative two positive stop lug boss can be set on the inwall of plastic wrapper, the first contiguous positive stop lug boss is provided with first and can gets over raised line, first more the opposite side of raised line and contiguous second liang of positive stop lug boss be provided with second raised line more, have two relative brachypterism sheets in the cross core bar.
First, second can be on the inwall of plastic wrapper relative two positive stop lug boss, the both sides of contiguous first positive stop lug boss respectively are provided with the first, the 4th all right one way or the other raised line more, the both sides of contiguous second positive stop lug boss respectively are provided with second, third all right one way or the other raised line more, have two relative brachypterism sheets in the cross core bar.
This utility model because the core bar guiding advances, avoids the pricker of rubber piston and the position of plastic wrapper pit with thin wall to be offset in injection, prevents maloperation.And after drawing liquid was finished, promoting pricker by the core bar rotation by cam stretched out, and during injection, can make the pit with thin wall position on the thorn needle penetration plastic wrapper back cover very like a cork.
Description of drawings
Fig. 1 is embodiment 1 diagrammatic sketch;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is that the C of Fig. 1 is to view;
Fig. 4 is the core bar diagrammatic sketch;
Fig. 5 is that Fig. 4 D is to view;
Fig. 6 is embodiment 2 diagrammatic sketch
Fig. 7 is Fig. 6 F-F cutaway view;
Fig. 8 is embodiment 3 diagrammatic sketch;
Fig. 9 is the E-E cutaway view of Fig. 9;
Figure 10 is the back cover diagrammatic sketch of two pit with thin wall.
The specific embodiment
See Fig. 1～Fig. 5, embodiment 1 has plastic wrapper 1 and plastic cross core bar 2, and an end of plastic wrapper 1 has crimping 4, the other end is a back cover, the back cover end has conehead 8, and an end of core bar 2 has the hands of pressing 3, and the other end is mounted on the pin head 5 and the rubber piston 9 for being dynamically connected.The inwall of crimping 4 one ends of plastic wrapper 1 is provided with the first positive stop lug boss 1-1 and first can get over raised line 1-3, the first positive stop lug boss 1-1 and first can get over raised line 1-3 and protrude the height b of inwall all between 0.10～0.35mm, generally between 0.17～0.25mm, first cross section that can get over raised line 1-3 is circular arc or triangle.The first positive stop lug boss 1-1 and first can get over raised line 1-3 distance at a distance of core bar 2 fin thickness a on inwall, the cross core bar places plastic wrapper 1, the wherein radial width of a fin of cross core bar is shorter than the radial width of all the other fin 2-1, form brachypterism sheet 2-2, this brachypterism sheet 2-2 is shorter than the height b that the suitable first positive stop lug boss 1-1 of other fin 2-1 protrudes inwall; Brachypterism sheet 2-2 can get over raised line 1-3 by the first positive stop lug boss 1-1 and first when rotating, and longer fin 2-1 can not pass through the first positive stop lug boss 1-1, makes the cross core bar can only do unidirectional rotation.Has incomplete disk cam 10 on the core bar 2 of pin head 5 bottoms, the incomplete disk cam 10 dark end 10-11 of present embodiment are in brachypterism sheet 2-2 place, a shallow end 10-12 can be a platform, is in the fin place of a brachypterism sheet 2-2 side opposite with direction of rotation; Rubber piston 9 is provided with pin hole, pricker 6 pass on the rubber piston 9 pin hole and with pin hole movingly, because of rubber piston tool elasticity slightly, this utility model prevents medicinal liquid seepage from pin hole again when guaranteeing that pricker 6 is can be upper and lower in rubber piston 9 pin holes mobile.Pricker 6 can be a metal needle, also can be the plastics pin.The root of pricker 6 is plugged among the helicla flute 10-1 of incomplete disk cam 10; When the length of pricker 6 must guarantee that pricker is in spiral fluted shallow end 10-12, the length of exsertion part was between 0.5～2.5mm, was provided with pit with thin wall 7 on plastic wrapper 1 back cover and in the position of corresponding pricker 6, and the thickness of pit with thin wall 7 is between 0.2～0.35mm.Because rubber piston 9 and pin head 5 are for being dynamically connected, and the friction between rubber piston and the plastic wrapper is bigger, rubber piston 9 is motionless during the core bar rotation.Shown in Figure 1 is the drawing liquid state, fin 2-1 is in first and can gets between the raised line 1-3 and the first positive stop lug boss 1-1, brachypterism sheet 2-2 is in the relative first positive stop lug boss 1-1 and has the other end that can get over raised line 1-3 one end, at this moment, pricker 6 is in the deep end 10-11 of helicla flute 10-1, when core bar advanced, first can get over raised line 1-3 and the first positive stop lug boss 1-1 plays position-limiting action, prevents the generation of maloperation.During injection, rotate core bar 2, brachypterism sheet 2-2 turns to first and can get between the raised line 1-3 and the first positive stop lug boss 1-1, because of rubber piston 9 is constant with the relative position of overcoat 1, promptly pricker 6 is constant with the relative position of pit with thin wall 7, and the helicla flute 10-1 of core bar 2 is relative, and pricker 6 turns to shallow end 10-12 by deep end 10-11, promotion pricker 6 moves up and exposes, carry out injection operation when pricker 6 is in the shallow end platform of helicla flute 10-1, injection finishes, and pricker 6 punctures the pit with thin wall 7 of plastic wrapper back cover.
See Fig. 6 and Fig. 7, the inwall of crimping 4 one ends of core bar plastic wrapper 1 is provided with the first positive stop lug boss 1-1 and first can get over raised line 1-3, the relative first positive stop lug boss 1-1 is provided with the second positive stop lug boss 1-2, first more raised line 1-3 opposite side and with the distance of a fin thickness a of the second positive stop lug boss 1-2 the second raised line 1-4 more is set, the second positive stop lug boss 1-2, first more raised line 1-3 with second more raised line 1-4 to protrude the height of inwall identical with the height b of first positive stop lug boss 1-1 protrusion inwall, the cross core bar has two relative brachypterism sheet 2-2, the radial width unanimity of two brachypterism sheet 2-2, all the other are identical with embodiment 1.During injection, long fin 2-1 of core bar 2 is turned to second can get between the raised line 1-4 and the second positive stop lug boss 1-2, brachypterism sheet 2-2 is in first and can gets between the raised line 1-3 and the first positive stop lug boss 1-1, and at this moment pricker 6 exposes, promote core bar 2, until puncturing plastic wrapper back cover pit with thin wall 7.Because when injection second can be got over raised line 1-4 with the second positive stop lug boss 1-2 play the guiding role to core bar 2, so compare with embodiment 1, present embodiment is at drawing liquid with when injecting, and the propelling of core bar is more stable.
See Fig. 8 and Fig. 9, the inwall of crimping 4 one ends of plastic wrapper 1 is provided with the first relative positive stop lug boss 1-1, the relative first positive stop lug boss 1-1 is provided with the second positive stop lug boss 1-2, the both sides of the contiguous first positive stop lug boss 1-1 respectively are provided with can get over raised line 1-3,1-6, the both sides of the contiguous second positive stop lug boss 1-2 respectively are provided with can get over raised line 1-4,1-5, the second positive stop lug boss 1-2 and four can get over raised line and protrude the height of inwall all the height b with first positive stop lug boss 1-1 protrusion inwall is identical, the cross core bar has two relative brachypterism sheet 2-2, the radial width unanimity of two brachypterism sheet 2-2, all the other are identical with embodiment 1.
Present embodiment can be provided with another pit with thin wall 7 (see figure 10)s on the back cover of overcoat and on the position relative with pit with thin wall 7.
Claims (8)
1, a kind of disposable damage type syringe, have plastic wrapper (1) and cross core bar (2), one end of plastic wrapper (1) has crimping (4), the other end is back cover (7), the back cover end has conehead (8), one end of core bar (2) has the hands of pressing (3), the other end has pin head (5), it is characterized in that: the inwall of crimping (4) one ends of plastic wrapper (1) is provided with at least one positive stop lug boss and at least one raised line of getting over, and can get over raised line and the positive stop lug boss that is close to fin thickness a at a distance of suitable cross core bar (2) on inwall; The radial width of at least one fin (2-2) is shorter than the radial width of other fin in the cross core bar, forms brachypterism sheet (2-2), and brachypterism sheet (2-2) is shorter than the quite height b of positive stop lug boss (1-1) protrusion inwall of other fin (2-1); Core bar (2) is gone up and is in pin head (5) bottom and is provided with incomplete disk cam (10), and not exclusively disk cam (10) is provided with helicla flute (10-1); The rubber piston (9) that has been dynamically connected on the pin head (5) of core bar (2), the pin hole of pricker (6) and rubber piston (9) movingly, the root of pricker (6) is plugged in the helicla flute (10-1) of incomplete disk cam (10); On plastic wrapper (1) back cover and on the position of corresponding pricker (6), be provided with pit with thin wall (7).
2, disposable damage type syringe according to claim 1 is characterized in that: positive stop lug boss and can get over raised line and protrude the height b of inwall between 0.10～0.35mm.
3, disposable damage type syringe according to claim 2, it is characterized in that: the cross section that can get over raised line can be a circular arc, also can be triangle.
4, disposable damage type syringe according to claim 3, it is characterized in that: the thickness of pit with thin wall (7) is 0.2～0.35mm.
5, disposable damage type syringe according to claim 4, it is characterized in that: pricker (6) can be a metal needle, also can be the plastics pin.
6, according to claim 1,2,3,4 or 5 described disposable damage type syringes, it is characterized in that: the inwall of crimping (4) one ends of plastic wrapper (1) is provided with first positive stop lug boss (1-1), contiguous first positive stop lug boss (1-1) is provided with first and can gets over raised line (1-3), is provided with a brachypterism sheet (2-2) in the cross core bar.
7, according to claim 1,2,3,4 or 5 described disposable damage type syringes, it is characterized in that: the inwall of crimping (4) one ends of plastic wrapper (1) is provided with two relative first, second two positive stop lug boss (1-1,1-2), contiguous first positive stop lug boss (1-1) is provided with first and can gets over raised line (1-3), can get over the opposite side of raised line (1-3) and contiguous second positive stop lug boss (1-2) first and be provided with second and can get over raised line (1-4), have two relative brachypterism sheets (2-2) in the cross core bar.
8, according to claim 1,2,3,4 or 5 described disposable damage type syringes, it is characterized in that: the inwall of crimping (4) one ends of plastic wrapper (1) is provided with relative first, second two positive stop lug boss (1-1,1-2), the both sides of contiguous first positive stop lug boss (1-1) respectively are provided with the first, the 4th and can get over raised line (1-3,1-6), the both sides of contiguous second positive stop lug boss (1-2) respectively are provided with second, third and can get over raised line (1-4,1-5), have two relative brachypterism sheets (2-2) in the cross core bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286544 CN2584203Y (en) | 2002-12-05 | 2002-12-05 | Disposable destroy-type syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286544 CN2584203Y (en) | 2002-12-05 | 2002-12-05 | Disposable destroy-type syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584203Y true CN2584203Y (en) | 2003-11-05 |
Family
ID=33747218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02286544 Expired - Fee Related CN2584203Y (en) | 2002-12-05 | 2002-12-05 | Disposable destroy-type syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584203Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530411A (en) * | 2010-10-21 | 2012-07-04 | 苏舍米克斯帕克有限公司 | Double discharge device |
-
2002
- 2002-12-05 CN CN 02286544 patent/CN2584203Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530411A (en) * | 2010-10-21 | 2012-07-04 | 苏舍米克斯帕克有限公司 | Double discharge device |
| CN102530411B (en) * | 2010-10-21 | 2016-07-06 | 苏舍米克斯帕克有限公司 | Double discharge device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |