CN101199876A - Safety self-destruction injector - Google Patents
Safety self-destruction injector Download PDFInfo
- Publication number
- CN101199876A CN101199876A CNA2006101194368A CN200610119436A CN101199876A CN 101199876 A CN101199876 A CN 101199876A CN A2006101194368 A CNA2006101194368 A CN A2006101194368A CN 200610119436 A CN200610119436 A CN 200610119436A CN 101199876 A CN101199876 A CN 101199876A
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- breach
- joint pin
- bite block
- syringe
- core bar
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Abstract
The invention discloses a safe self-destruction-type injector, which is characterized in that a connecting seat is arranged in the neck at one end of a needle cylinder; a changeable pinhead seat is nested at the connecting seat; a back-drawing pole is arranged at the end of a core rod; the back-drawing pole and the core rod are made into an integrative structure; a gap is arranged on the outer door of the back-drawing pole; an occlusal block is arranged inside the gap; the upper part of one side of the occlusal block is in point connection with the inner side wall of the gap; the occlusal block is arranged inside the gap; clearance exists everywhere between the outer wall of the occlusal block and the inner wall of the gap except the connecting point; a stop clasp is arranged on the inner wall near the bottom of the connecting seat. The invention, with reasonable structure, good blocking effect of the connecting seat, can produce more than 20n of blocking force, so that the tensile force needed for pulling the core rod is small and the pulling process is smooth. The invention with high working stability and good self-destruction effect is completely-plastic-made, so that completely automatic assembling can be achieved. Thereby, the invention is easy to be popularized.
Description
Technical field:
The present invention relates to the technical field of medical equipment, a kind of specifically safety self-destructing syringe, particularly its internal mechanical syndeton.
Background technology:
Documents one, the patent No.: ZL200420120600.3, grant number: CN2792520, patentee: Guocai Wang, " a kind of self-destroyed syringe once safe in utilization " disclosed in this case, its principal claim content is: a kind of self-destroyed syringe once safe in utilization, by syringe, core bar, sealing ring, the needle stand assembly, needle point and needle tip shield are formed, and the needle stand assembly puts in being enclosed within by overcoat, in overlapping in needle point is fixed on, one stomidium of overcoat has a seam, core bar is connected with piston, it is characterized in that: piston has a cross contact, and the front end of cross contact is the cross connecting rod, the back of cross connecting rod is the contact axle, and the cross seam of cross contact and overcoat is complementary.
Documents two, the patent No.: ZL 200520007492.3, grant number: CN2774547, patentee: Dong Zhenglin; Wu Xuegui discloses a kind of " safe self-breaking syringe " in this case, its principal claim content is: a kind of safe self-breaking syringe, comprise helmet, it is characterized in that needle body is installed in cartridge case, needle body passes sliding sleeve, and sliding sleeve passes in the spring, spring is contained in the cartridge case front end, contact with the inner face of the front end of cartridge case, sealing ring is contained on the rear side position of needle body, contacts with drug cylinder, piston places in the cartridge case and is located on the rear end face of needle body and is installed on the front end of push rod, and push rod is installed in the cartridge case.
Documents three, the patent No.: ZL 200420009950.2, grant number: CN2798971, patentee: Xu Jianwei; Zhang Yong; Mu Songde, a kind of " self-destroyed syringe once safe in utilization " disclosed in this case, its principal claim content is: self-destroyed syringe once safe in utilization, by syringe, core bar, sealing ring, the needle stand assembly, needle point and needle tip shield are formed, it is characterized in that: the needle stand assembly puts in being enclosed within by overcoat, in overlapping in needle point is fixed on, one stomidium of overcoat has a seam, core bar is connected with piston, and piston has a contact, and the front end of contact is a conical points, the back of conical points is a bayonet socket, the seam of contact and overcoat is complementary, and after contact injected the seam of overcoat, bayonet socket blocked the seam of overcoat; Overcoat and syringe are tightly connected by sealing ring, put in needle tip shield is enclosed within, and the afterbody endoporus of syringe has a seam diameter less than piston outside diameter.
More than disclosed be three pieces of existing disclosed documents, existing safety self-destructing syringe all exists the syringe self-distruction structure unreasonable, be easy to occur error, cause self-destructor malfunctioning, and need to use metalwork in the structure of existing a lot of safe self-breaking syringes, the manufacturing cost of product can be increased like this, full-automatic assembling can't be realized, so still need existing product is further improved.
Summary of the invention:
The object of the present invention is to provide a kind of safety self-destructing syringe, the safety self-destruct success rate that it effectively improves syringe has overcome existing product safety self-destruct fault rate height, the shortcoming and defect of poor stability.
To achieve these goals, technical scheme of the present invention is: a kind of safety self-destructing syringe, it mainly comprises syringe, the exchangeable needle seat, center, exchangeable needle seat top is provided with needle tubing, be provided with core bar in the syringe, the core bar end is provided with plug, it is characterized in that: be provided with Connection Block in the end tube neck of described syringe, the Connection Block place is socketed with the exchangeable needle seat, the core bar end is provided with the post of pulling back, pull back post and core bar is into a single integrated structure, and the outer wall place of the post of pulling back is provided with breach, is provided with bite block in the breach, the top of bite block one side is connected with breach medial wall point, bite block is positioned at breach, all has the gap except a junction between bite block outer wall and the breach inwall, and the Connection Block inner chamber is provided with spacing snap ring near inwall place, bottom.
A kind of safety self-destructing syringe, it mainly comprises syringe, fixed needle base, center, fixed needle base top is provided with needle tubing, be provided with core bar in the syringe, the core bar end is provided with plug, it is characterized in that: be provided with fixed needle base in the end tube neck of described syringe, the core bar end is provided with the post of pulling back, pull back post and core bar is into a single integrated structure, and the outer wall place of the post of pulling back is provided with breach, is provided with bite block in the breach, the top of bite block one side is connected with breach medial wall point, bite block is positioned at breach, all has the gap except a junction between bite block outer wall and the breach inwall, and the fixed needle base inner chamber is provided with spacing snap ring near inwall place, bottom.
The invention discloses a kind of safety self-destructing syringe, it has added the post of pulling back in the core bar end, pull back and be provided with bite block in the post sidewall breach, bite block can be stuck fully with the spacing snap ring in the Connection Block in use, make core bar can't separate with Connection Block, realize the complete self-destruction of syringe, core bar can be withdrawn into the exchangeable needle seat of Connection Block together with front end in the syringe cavity, realize the syringe safe effect, product structure is reasonable, and it is good that effect is moved back in the Connection Block resistance, can produce greater than 20 newton's resistance and move back power, pulling during core bar required pulling force very little, spur happy, its job stability height, self-destruction is effective, product is overall plastic materials and parts, can realize full-automatic assembling, very easily applies.
Description of drawings:
Fig. 1 is the first embodiment of the invention structural representation.
Local structure for amplifying sketch map when Fig. 2 is bite block of the present invention and Connection Block interlock.
Fig. 3 is a plug structural representation of the present invention.
Fig. 4 is a first embodiment of the invention exchangeable needle holder structure sketch map.
Fig. 5 is a Connection Block structural representation of the present invention.
Fig. 6 is a syringe cylinder structure sketch map of the present invention.
Fig. 7 is a core bar structure sketch map of the present invention.
Fig. 8 is the present invention's post vertical view of pulling back.
Structural representation when Fig. 9 finishes for the injection of first embodiment of the invention.
Figure 10 is a first embodiment of the invention self-destruction status architecture sketch map.
Figure 11 is the second embodiment of the invention structural representation
Local structure for amplifying sketch map when Figure 12 is the bite block of the present invention and the second embodiment exchangeable needle seat interlock.
Figure 13 is a second embodiment of the invention fixed needle base structural representation.
Structural representation when Figure 14 is the second embodiment of the invention self-destruction.
The specific embodiment:
With reference to the accompanying drawings, the present invention further is described
The present invention is a kind of safety self-destructing syringe, as Fig. 1 as shown in it, first embodiment of the invention, it mainly comprises syringe 1, exchangeable needle seat 2, the exchangeable needle seat is socketed with sheath 18 outward, center, exchangeable needle seat top is provided with needle tubing 6, be provided with core bar 3 in the syringe, the core bar end is provided with plug 4, it is characterized in that: be provided with Connection Block 5 in the end tube neck of described syringe 1, Connection Block 5 places are socketed with exchangeable needle seat 2, core bar 3 ends are provided with the post 7 of pulling back, the post 7 of pulling back is into a single integrated structure with core bar 3, the pull back outer wall place of post 7 is provided with breach 8, be provided with bite block 9 in the breach 8, the top of bite block 9 one sides is connected with breach 8 medial wall points, bite block 9 is positioned at breach 8, all there is gap 10 except a junction between bite block 9 outer walls and breach 8 inwalls, Connection Block 5 inner chambers are provided with spacing snap ring 16 near inwall place, bottom, Connection Block 5 is cylindrical shape, its outer wall laterally is provided with spacing ring 11, the tube neck inwall place of syringe 1 laterally be provided with spacing ring 11 to the stopper slot 12 that cooperates, frictional force after spacing ring 11 and stopper slot 12 interlocks can be greater than more than 20 newton, exchangeable needle seat rebound phenomenon in the time of can effectively preventing to inject, described Connection Block 5 is socketed into integrative-structure by interior joint pin 13 and outer joint pin 14, interior joint pin 13 and outer joint pin 14 inner chamber hollows, interior joint pin 13 is positioned at the centre bit of outer joint pin 14, interior joint pin 13 is fixedlyed connected with the bottom of outer joint pin 14 and is integral, exchangeable needle seat 5 is socketed in interior joint pin 13 places, 11 of spacing rings are positioned at outer joint pin 14 outer wall places, and spacing snap ring 16 is positioned at joint pin 13 inner chambers near inwall place, bottom, the cavity wall bottom is provided with chamfering 17 in the interior joint pin 13, breach 8 medial walls are an inclined-plane, the bottom of breach also is an inclined-plane, outer low and inner high, bite block 9 is positioned at breach 8, the top of bite block 9 one sides is connected with breach medial wall point, the opposite side upper recess of bite block 9 is in breach 8 edges, the opposite side bottom of bite block 9 protrudes from breach 8 edges, the center of plug 4 is provided with sleeve joint hole 15, interior joint pin 13 surfaces are provided with the conical surface of 6: 100 taperings, tapering met international standard in 6: 100, the length of post 7 of pulling back is identical with the length of interior joint pin 13, when injection is finished, the post 7 of pulling back is positioned at joint pin 13 intracavity, such mechanism design can reach minimum medicinal liquid residual quantity so that inject when finishing.
As shown in Figure 12, be second embodiment of the invention, it mainly comprises syringe 1, fixed needle base 18, center, fixed needle base 18 top is provided with needle tubing 6, be provided with core bar 3 in the syringe, the core bar end is provided with plug 4, it is characterized in that: be provided with fixed needle base 18 in the end tube neck of described syringe 1, core bar 3 ends are provided with the post 7 of pulling back, the post 7 of pulling back is into a single integrated structure with core bar 3, the pull back outer wall place of post 7 is provided with breach 8, be provided with bite block 9 in the breach 8, the top of bite block 9 one sides is connected with breach 8 medial wall points, and bite block 9 is positioned at breach 8, all have gap 10 except a junction between bite block 9 outer walls and breach 8 inwalls, fixed needle base 18 inner chambers are provided with spacing snap ring 16 near inwall place, bottom.
When first embodiment of the invention is specifically implemented, as shown in fig. 1, this moment, syringe was initial resting state, the post front end of pulling back is positioned at the joint pin inner chamber of Connection Block, and bite block top has just touched the chamfering place of Connection Block bottom, at this constantly, the overall width of post is pulled back greater than the width at interior joint pin bottom end opening place in the bite block bottom, the bite block outside forms an inclined-plane, during start injection, after sucking medicinal liquid, promote core bar forward, medicinal liquid is injected in patient's body, when injection soon finishes, return to original state between core bar and the Connection Block again, bite block top touches the chamfering place of Connection Block bottom, at this moment, promote core bar more forward, the lateral wall of bite block is an inclined-plane, the post of pulling back becomes up-narrow and down-wide shape herein, add the effect of chamfering, bite block is easy to displacement forward, because the top of bite block, all there is the gap between bottom and medial wall and the breach inwall, the bite block bottom is easy under the external force effect to the displacement of breach internal modification being subjected to like this, original gap is filled up, bite block just is easy to enter joint pin inner chamber in the Connection Block like this, after spacing snap ring is skimmed in the bite block bottom, the active force that acts on the bite block outside disappears, under the effect of bounce, bite block returns to original state again, joint pin inner chamber in the post of pulling back this moment enters fully, injection is finished, and pulls back core bar this moment, the bottom in the bite block outside is just in time stuck at spacing snap ring place, firmly kill, make core bar be connected and can't separate again, realize the self-destruction effect, syringe can't reuse, at this moment, pull back core bar, under the drive of core bar, the spacing ring of Connection Block outer wall is thrown off with the stopper slot of tube neck inwall, Connection Block is subjected to displacement backward, knows that whole exchangeable needle seat slips into the syringe inner chamber, realizes safe effect.
When second embodiment of the invention is specifically implemented, as shown in Figure 12, this moment, syringe was initial resting state, the post front end of pulling back is positioned at the fixed needle base intracavity, and bite block top has just touched the chamfering place of fixed needle base bottom opening, at this constantly, the overall width of post is pulled back greater than the width at fixed needle base bottom end opening place in the bite block bottom, the bite block outside forms an inclined-plane, during start injection, after sucking medicinal liquid, promote core bar forward, medicinal liquid is injected in patient's body, when injection soon finishes, return to original state between core bar and the fixed needle base again, bite block top touches the chamfering place of fixed needle base bottom, at this moment, promote core bar more forward, the lateral wall of bite block is an inclined-plane, the post of pulling back becomes up-narrow and down-wide shape herein, add the effect of chamfering, bite block is easy to displacement forward, because the top of bite block, all there is the gap between bottom and medial wall and the breach inwall, the bite block bottom is easy under the external force effect to the displacement of breach internal modification being subjected to like this, original gap is filled up, bite block just is easy to enter the fixed needle base inner chamber like this, after spacing snap ring is skimmed in the bite block bottom, the active force that acts on the bite block outside disappears, under the effect of bounce, bite block returns to original state again, the post of pulling back this moment enters the fixed needle base inner chamber fully, injection is finished, and pulls back core bar this moment, and the bottom in the bite block outside is just in time stuck at spacing snap ring place, firmly kill, make core bar and fixed needle base to separate again, realize the self-destruction effect, syringe can't reuse, at this moment, pull back core bar, under the drive of core bar, the spacing ring of fixed needle base outer wall is thrown off with the stopper slot of tube neck inwall, whole fixed needle base slips into the syringe inner chamber, realizes safe effect.
Claims (10)
1. safety self-destructing syringe, it mainly comprises syringe (1), exchangeable needle seat (2), center, exchangeable needle seat top is provided with needle tubing (6), be provided with core bar (3) in the syringe, the core bar end is provided with plug (4), it is characterized in that: be provided with Connection Block (5) in the end tube neck of described syringe (1), Connection Block (5) locates to be socketed with exchangeable needle seat (2), core bar (3) end is provided with the post of pulling back (7), the post (7) of pulling back is into a single integrated structure with core bar (3), the pull back outer wall place of post (7) is provided with breach (8), be provided with bite block (9) in the breach (8), the top of bite block (9) one sides is connected with breach (8) medial wall point, bite block (9) is positioned at breach (8), all have gap (10) except a junction between bite block (9) outer wall and breach (8) inwall, Connection Block (5) inner chamber is provided with spacing snap ring (16) near inwall place, bottom.
2. a kind of safety self-destructing syringe according to claim 1 is characterized in that: Connection Block (5) is cylindrical shape, and its outer wall laterally is provided with spacing ring (11).
3. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the tube neck inwall place of syringe (1) laterally be provided with spacing ring (11) to the stopper slot that cooperates (12).
4. a kind of safety self-destructing syringe according to claim 1, it is characterized in that: described Connection Block (5) is socketed into integrative-structure by interior joint pin (13) and outer joint pin (14), interior joint pin (13) and outer joint pin (14) inner chamber hollow, interior joint pin (13) is positioned at the centre bit of outer joint pin (14), interior joint pin (13) is fixedlyed connected with the bottom of outer joint pin (14) and is integral, exchangeable needle seat (5) is socketed in interior joint pin (13) and locates, spacing ring (11) then is positioned at outer joint pin (14) outer wall place, and spacing snap ring (16) is positioned at joint pin (13) inner chamber near inwall place, bottom, and the interior cavity wall of interior joint pin (13) bottom is provided with chamfering (17).
5. a kind of safety self-destructing syringe according to claim 1 is characterized in that: breach (8) medial wall is an inclined-plane, and the bottom of breach also is an inclined-plane, and is outer low and inner high.
6. a kind of safety self-destructing syringe according to claim 1, it is characterized in that: bite block (9) is positioned at breach (8), the top of bite block (9) one sides is connected with breach medial wall point, the opposite side upper recess of bite block (9) is in breach (8) edge, and the opposite side bottom of bite block (9) protrudes from breach (8) edge.
7. a kind of safety self-destructing syringe according to claim 6 is characterized in that: the center of plug (4) is provided with sleeve joint hole (15).
8. a kind of safety self-destructing syringe according to claim 4 is characterized in that: interior joint pin (13) surface is provided with the conical surface of 6: 100 taperings.
9. a kind of safety self-destructing syringe according to claim 4 is characterized in that: the length of the post of pulling back (7) is identical with the length of interior joint pin (13).
10. safety self-destructing syringe, it mainly comprises syringe (1), fixed needle base (18), fixed needle base (18) center, top is provided with needle tubing (6), be provided with core bar (3) in the syringe, the core bar end is provided with plug (4), it is characterized in that: be provided with fixed needle base (18) in the end tube neck of described syringe (1), core bar (3) end is provided with the post of pulling back (7), the post (7) of pulling back is into a single integrated structure with core bar (3), the pull back outer wall place of post (7) is provided with breach (8), be provided with bite block (9) in the breach (8), the top of bite block (9) one sides is connected with breach (8) medial wall point, bite block (9) is positioned at breach (8), all has gap (10) except a junction between bite block (9) outer wall and breach (8) inwall, and fixed needle base (18) inner chamber is provided with spacing snap ring (16) near inwall place, bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101194368A CN101199876A (en) | 2006-12-11 | 2006-12-11 | Safety self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101194368A CN101199876A (en) | 2006-12-11 | 2006-12-11 | Safety self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101199876A true CN101199876A (en) | 2008-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101194368A Pending CN101199876A (en) | 2006-12-11 | 2006-12-11 | Safety self-destruction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101199876A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013127036A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle retractable-type safe self-destructing syringe |
| CN105435339A (en) * | 2015-10-23 | 2016-03-30 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Clamping type bottle |
-
2006
- 2006-12-11 CN CNA2006101194368A patent/CN101199876A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013127036A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle retractable-type safe self-destructing syringe |
| CN105435339A (en) * | 2015-10-23 | 2016-03-30 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Clamping type bottle |
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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 |
Open date: 20080618 |