CN200987816Y - Safety self-destroying syrinde capable of changing needle - Google Patents
Safety self-destroying syrinde capable of changing needle Download PDFInfo
- Publication number
- CN200987816Y CN200987816Y CN 200620048797 CN200620048797U CN200987816Y CN 200987816 Y CN200987816 Y CN 200987816Y CN 200620048797 CN200620048797 CN 200620048797 CN 200620048797 U CN200620048797 U CN 200620048797U CN 200987816 Y CN200987816 Y CN 200987816Y
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- CN
- China
- Prior art keywords
- joint pin
- breach
- syringe
- core bar
- safety self
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Abstract
The utility model discloses a safe self-destruct injector whose needle head can be changed. The utility model is characterized in that: a connection base is provided in the neck of one side of the injection syringe, the connection base is jacketed and connected with a needle head base, a back pulling column is provided on the end of a core bar and integrated with the core bar as one body, a gap is provided on the external wall of the back pulling column, an occlusion block is provided in the gap, the upper part of one side of the occlusion block connects with the inner side of the gap at one point, the occlusion block is in the gap, gaps are existed everywhere between the external wall of the occlusion block and the inner wall of the gap except the point connection position, a spacing clasp is provided on the inner wall closed to the lower end in the intracavity of the connection base. The product has reasonable structure, the connection base has a good retreat protecting effect, and a retreat protecting force more than 20N is generated, the pulling force needed when pulling the core bar is small, and the core bar is comfortable to be pulled. The product has high work stability, good self-destruct effect, and is a full plastic piece. The full automatic assembly can be realized, and the product is easy to be popularized and applied.
Description
Technical field:
This utility model relates to the technical field of medical equipment, specifically a kind of safety self-destructing syringe of exchangeable needle, particularly its internal mechanical syndeton.
Background technology:
Documents one, the patent No.: 200420036424.5, publication number: CN2693263, patentee: Xu Haohua; Li Weiguo discloses a kind of " disposable self-destroyed syringe safe in utilization " in this case, its principal claim content is: a kind of disposable self-destroyed syringe safe in utilization, and include: one can insert the needle tubing of human body; One is used for fixing the built-in needle stand of described injection needle, and described injection needle is fixed on the small bore end of described built-in needle stand; One syringe cylinder includes the fixture that is used for fixing built-in needle stand; One can be at the inner injection core rod of passing of syringe cylinder, and this injection core rod is positioned at syringe cylinder one end and is provided with one and has hollow cavity and the mobile sealing plug with the promotion of injection core rod; It is characterized in that: described built-in needle stand closely is mounted in the fixture inside of described syringe cylinder; But the puncture screens terminal of breakseal plug be provided with the application of force in the hollow cavity of described sealing plug after, the end that this puncture screens terminal and described injection core rod are positioned at syringe cylinder inside is connected.
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, can increase the manufacturing cost of product like this, can't realize full-automatic assembling, so still need existing product is further improved.
Summary of the invention:
The purpose of this utility model is to provide a kind of safety self-destructing syringe of exchangeable needle, and 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 of exchangeable needle, it mainly comprises syringe, needle holder, center, needle holder 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 needle holder, 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.
The utility model discloses a kind of safety self-destructing syringe of exchangeable needle, 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 needle holder 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 a structural representation of the present utility model.
Local structure for amplifying sketch map when Fig. 2 is this utility model bite block and Connection Block interlock.
Fig. 3 is this utility model plug structural representation.
Fig. 4 is this utility model needle holder structural representation.
Fig. 5 is this utility model Connection Block structural representation.
Fig. 6 is this utility model syringe cylinder structure sketch map.
Fig. 7 is this utility model core bar structure sketch map.
Fig. 8 is this utility model post vertical view of pulling back.
Structural representation when Fig. 9 finishes for this utility model injection.
Figure 10 is this utility model self-destruction status architecture sketch map.
The specific embodiment:
With reference to the accompanying drawings, this utility model further is described
This utility model is a kind of safety self-destructing syringe of exchangeable needle, as Fig. 1 as shown in it, it mainly comprises syringe 1, needle holder 2, needle holder is socketed with sheath 18 outward, center, needle holder 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 needle holder 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, needle holder 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, needle holder 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 structural design can reach minimum medicinal liquid residual quantity so that inject when finishing.
When this utility model 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 needle holder slips into the syringe inner chamber, realizes safe effect.
Claims (9)
1, a kind of safety self-destructing syringe of exchangeable needle, it mainly comprises syringe (1), needle holder (2), center, needle holder 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 needle holder (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, the safety self-destructing syringe of a kind of exchangeable needle 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, the safety self-destructing syringe of a kind of exchangeable needle 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, the safety self-destructing syringe of a kind of exchangeable needle 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, needle holder (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, the safety self-destructing syringe of a kind of exchangeable needle 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, the safety self-destructing syringe of a kind of exchangeable needle 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, the safety self-destructing syringe of a kind of exchangeable needle according to claim 6 is characterized in that: the center of plug (4) is provided with sleeve joint hole (15).
8, the safety self-destructing syringe of a kind of exchangeable needle according to claim 4 is characterized in that: interior joint pin (13) surface is provided with the conical surface of 6: 100 taperings.
9, the safety self-destructing syringe of a kind of exchangeable needle 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048797 CN200987816Y (en) | 2006-12-11 | 2006-12-11 | Safety self-destroying syrinde capable of changing needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048797 CN200987816Y (en) | 2006-12-11 | 2006-12-11 | Safety self-destroying syrinde capable of changing needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200987816Y true CN200987816Y (en) | 2007-12-12 |
Family
ID=38938862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048797 Expired - Fee Related CN200987816Y (en) | 2006-12-11 | 2006-12-11 | Safety self-destroying syrinde capable of changing needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200987816Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111930A1 (en) * | 2008-03-10 | 2009-09-17 | 创维有限公司 | Safety injector |
-
2006
- 2006-12-11 CN CN 200620048797 patent/CN200987816Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111930A1 (en) * | 2008-03-10 | 2009-09-17 | 创维有限公司 | Safety injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 Termination date: 20101211 |