CN204395142U - A kind of type self-destroyed bilayer engaging syringe of pulling back safely - Google Patents
A kind of type self-destroyed bilayer engaging syringe of pulling back safely Download PDFInfo
- Publication number
- CN204395142U CN204395142U CN201420817695.8U CN201420817695U CN204395142U CN 204395142 U CN204395142 U CN 204395142U CN 201420817695 U CN201420817695 U CN 201420817695U CN 204395142 U CN204395142 U CN 204395142U
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- China
- Prior art keywords
- inner barrel
- cylinder body
- outer cylinder
- inner chamber
- bilayer
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- Expired - Fee Related
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- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 18
- 230000006378 damage Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 244000208734 Pisonia aculeata Species 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a kind of type self-destroyed bilayer engaging syringe of pulling back safely, comprise outer cylinder body and be set in the inner barrel of outer cylinder body inner chamber, clamping occlusion structure locking also by being provided with between outer cylinder body and inner barrel, when inner barrel is pulled back along outer cylinder body inner chamber, clamping occlusion structure unclamps; Inner barrel top is connected with needle holder, and needle holder top is provided with needle tubing, and simultaneously inner barrel inner chamber is also provided with core bar, and the plug that core bar is set with by top and inner barrel inner chamber form and be slidably connected; The core bar of inner barrel inner chamber is arranged in by pulling back, plug and the inner barrel inner chamber of core bar top suit form frictional force, wherein because the gmatjpdumamics between the clamping occlusion structure between inner barrel and outer cylinder body is less compared with the frictional force formed between plug and inner barrel, and then make inner barrel along the drop-down movement of outer cylinder body inner chamber, and then drive needle tubing to glide with inner barrel together with needle holder, extend in outer cylinder body inner chamber, thus avoid needle tubing and to leak outside the phenomenon of easily accidentally injuring.
Description
Technical field
This utility model relates to technical field of medical instruments, refers more particularly to a kind of type self-destroyed bilayer engaging syringe of pulling back safely.
Background technology
Because injector for medical purpose is after carrying out drug injection to patient, needle tubing on syringe and patient patient have contacting blood, especially the patient by blood-transmitted disease is suffered from for some, the syringe required with it at it has very high potentially danger, therefore the syringe after to patient's use is medically needed to carry out destruction cleaning, but because needle tubing is very sharp, health care workers is in the process of these syringes of process, be easy to be stabbed by needle tubing, thus the health care workers for process wasted syringes, its work is abnormally dangerous.
For this reason, market occurs some can the syringe of self-destruct, such as application number be 200410017938.0 Chinese invention patent disclose the patent document of " a kind of damage formula safety injector " on November 2nd, 2005, this damage formula safety injector comprises overcoat, be arranged at this outer cylinder neck put, syringe needle and the core bar be arranged in overcoat inner chamber, the needle holder that wherein chimb that is provided with by cylinder neck inner chamber top of this patent and outer wall are provided with ring-type convex tendon is fitted and is compressed, in addition, the top of core bar is also provided with the endoporus for placing barb, during work, in the process retracted along with the core bar in this syringe, the barb one end being arranged in the endoporus on core bar top is clamped in the cylindrical hole that needle holder inwall is provided with, thus needle holder is drawn in outer tube inner chamber, realize the damage of needle tubing, although the syringe of this kind of version can reach the object of effectively damage, but its complex structure, and pull back core bar and be needle tubing damage process in, operator are actual or need to pay larger pulling force, just can realize above-mentioned effect, especially for large batch of syringe destroy work, its labor intensity just seems very large.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of structure simple, easy to operate, and the safety that working stability and needle tubing pull-back pulling force needed for it is less is pulled back type self-destroyed bilayer engaging syringe.
For achieving the above object, technical scheme provided by the utility model is: a kind of type self-destroyed bilayer engaging syringe of pulling back safely, comprise outer cylinder body and be set in the inner barrel of this outer cylinder body inner chamber, also locked by the clamping occlusion structure be provided with between described outer cylinder body and inner barrel, wherein when described inner barrel is pulled back along outer cylinder body inner chamber, this clamping occlusion structure unclamps; Described inner barrel top is connected with needle holder, and this needle holder top is provided with needle tubing, and this inner barrel inner chamber is also provided with core bar simultaneously, and the plug that this core bar is set with by top and described inner barrel inner chamber form and be slidably connected.
By adopting the syringe of the double-decker form of inside and outside cylindrical shell, wherein adopt the locking of clamping occlusion structure between outer cylinder body and inner barrel, and the needle holder with needle tubing is installed on inner barrel top, can make with this kind of version syringe destroy time, the core bar of inner barrel inner chamber is arranged in by pulling back, plug and the inner barrel inner chamber of core bar top suit form frictional force, wherein because the gmatjpdumamics between the clamping occlusion structure between inner barrel and outer cylinder body is less compared with the frictional force formed between plug and inner barrel, and then make inner barrel along the drop-down movement of outer cylinder body inner chamber, and then drive needle tubing to glide with inner barrel together with needle holder, extend in outer cylinder body inner chamber, thus avoid needle tubing and to leak outside the phenomenon of easily accidentally injuring.In addition, the core bar in the syringe of this kind of version is in the process of pulling back, and its need overcome the frictional force between plug and inner barrel inwall, and thus its actual pull-back forces is less, is easy to operation.
Preferably, described clamping occlusion structure comprises the elastic ring projection that is set on inner barrel outer wall upper end and is arranged on outer cylinder body inner chamber for installing the annular groove of described elastic ring projection.Whole clamping bitelock locking structure can be made to make simply by the clamping occlusion structure adopting elastic ring projection to match with annular groove, cost is lower, and reliable and stable.
Further, described inner barrel outer wall is set with multiple described elastic ring projection spaced apart, on this outer cylinder body inner chamber, correspondence is provided with multiple described annular groove simultaneously.By adopting multiple spaced apart elastic ring projection, further can ensure that core bar is in the process of pulling back, its power of pulling back is easy to control, prevent the gmatjpdumamics between clamping occlusion structure too small, thus make core bar in the process of pulling back, occur inner barrel directly to pull out from outer cylinder body inner chamber.
Further, the longitudinal section of described elastic ring projection is " ∠ " ramp type cross section structure of resistance to sliding when pulling back along outer cylinder body inner chamber for increasing inner barrel.By the longitudinal section of elastic ring projection being arranged for " ∠ " ramp type cross section structure of the resistance to sliding increased when inner barrel is pulled back along outer cylinder body inner chamber, more further can increase the gmatjpdumamics between clamping occlusion structure, in addition inner barrel frictional force between the two in the process along the movement of outer cylinder body inner chamber also can be made to be increased, prevent it from directly being pulled out from outer cylinder body inner chamber easily.
Further, described needle holder is integrated injection mo(u)lding and makes, and this needle holder is threadedly connected on described inner barrel top simultaneously.Needle holder adopts integrated injection molding to make, and simplify making work, reduce the production cost of enterprise, adopt screw connection structure in addition, can ensure that needle holder is in the process of pulling back with inner barrel, needle holder not easily drops.
Accompanying drawing explanation
Fig. 1 is syringe assembly structure generalized section in this utility model.
Fig. 2 is this utility model China and foreign countries tube structure generalized sections.
Fig. 3 is lamp inner barrel structural profile schematic diagram in this utility model.
Fig. 4 is the partial enlargement structural representation at A place in Fig. 1.
Fig. 5 is the partial enlargement structural representation at B place in Fig. 2.
Fig. 6 is the partial enlargement structural representation at C place in Fig. 3.
In figure: 1-inner barrel, 101-elastic ring projection, 2-outer cylinder body, 201-annular groove, 3-core bar, 4-plug, 5-needle holder, 6-sealing cap, 7-seal closure, 8-annular gap, 9-needle tubing.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is described in further detail:
Shown in accompanying drawing 1, one described in the present embodiment pull back safely type self-destroyed bilayer engaging syringe, comprise outer cylinder body 2 and be set in the inner barrel 1 of this outer cylinder body 2 inner chamber, clamping occlusion structure by being provided with between outer cylinder body 2 and inner barrel 1 is locked, wherein when inner barrel 1 is pulled back along outer cylinder body 2 inner chamber, this clamping occlusion structure unclamps, and specifically namely outer cylinder body 2 realizes being separated with inner barrel 1; Inner barrel 1 top is connected with needle holder 5, and this needle holder 5 top is provided with needle tubing 9, and this inner barrel 1 inner chamber is also provided with core bar 3 simultaneously, and plug 4 and inner barrel 1 inner chamber that this core bar 3 is set with by top form and be slidably connected.In addition, the needle tubing 9 in this programme is also set with the sealing cap 6 of its protective effect, and meanwhile, the top of outer cylinder body 2 is also set with the seal closure 7 of protective action.
Shown in accompanying drawing 2 to 6, simple in order to make the clamping occlusion structure in this programme make, cost is lower, and reliable and stable, preferably adopt the elastic ring projection 101 comprising and being set on inner barrel 1 outer wall upper end and be arranged on outer cylinder body 2 inner chamber for installing the annular groove 201 of described elastic ring projection 101.Further, inner barrel 1 top outer wall is provided with annular mounting groove, and elastic ring projection 101 is set on inner barrel 1 outer wall by this annular mounting groove.In addition in order to further ensure that core bar 3 is in the process of pulling back, its power of pulling back is easy to control, be exactly prevent the gmatjpdumamics between clamping occlusion structure too small specifically, thus make core bar 3 in the process of pulling back, occur inner barrel 1 directly to pull out from outer cylinder body 2 inner chamber.This programme is also taked on inner barrel 1 outer wall, be set with multiple elastic ring projection 101 spaced apart, and on this outer cylinder body 2 inner chamber, correspondence is provided with multiple described annular groove 201 simultaneously.
Simultaneously, more further increase in this programme the gmatjpdumamics clamped between occlusion structure, in addition inner barrel 1 frictional force between the two in the process along the movement of outer cylinder body 2 inner chamber also can be made to be increased, prevent it from directly being pulled out from outer cylinder body 2 inner chamber easily, preferably the longitudinal section of elastic ring projection 101 is designed for " ∠ " ramp type cross section structure of the resistance to sliding increased when inner barrel 1 is pulled back along outer cylinder body 2 inner chamber.
In addition, in order to simplify the making work of whole syringe, reduce the production cost of enterprise, the needle holder 5 in this programme adopts integrated injection molding to make; Meanwhile, in order to ensure that needle holder 5 is in the process of pulling back with inner barrel 1, needle holder 5 not easily drops, and this needle holder 5 takes the mode be threaded to be connected with inner barrel 1 top.
Syringe in this programme uses extraction, injecting liquid drug and the needle tubing comprising medicinal liquid to damage three main process.During the extraction medicinal liquid of first-selected syringe, operator is in the process of pulling back core bar 3, need the bottom propping up inner barrel 1 with hands, inner barrel 1 and outer cylinder body 2 bottom are fitted, and then produce movement therebetween, prevent inner barrel 1 to pull back movement along with core bar 3, after medicinal liquid has extracted, medicinal liquid is stored in inner barrel 1 cavity, during injecting liquid drug, the same with the syringe of normal conventional, only need slowly to advance core bar 3, make injecting liquid drug in syringe in patient body, after having injected, needle tubing 9 is transferred to, then carry out needle tubing 9 and damage, when needle tubing 9 is damaged, operator pulls back on the other hand core bar 3, another holds outer cylinder body 2 simultaneously, along with pulling back of core bar 3, clamping occlusion structure between inner barrel 1 and outer cylinder body 2 unclamps, inner barrel 1 is along the drop-down movement of outer cylinder body 2 inner chamber, thus needle holder 5 and needle tubing 9 are moved in outer cylinder body 2 inner chamber with inner barrel, and then avoid syringe in destruction scale removal process, needle tubing 9 leaks outside the phenomenon of easily hurting sb.'s feelings, in this process, the contact area that annular gap 8 can reduce inner barrel 1 and outer cylinder body 2 is preset with between outer cylinder body 2 and inner barrel 1 circumference being nested in intracavity in it, avoid frictional force between the two excessive, user is made to be difficult to operation.
The examples of implementation of the above are only the preferred embodiment of this utility model, not limit practical range of the present utility model with this, therefore the change that all shapes according to this utility model, principle are done, all should be encompassed in protection domain of the present utility model.
Claims (6)
1. a safety is pulled back type self-destroyed bilayer engaging syringe, it is characterized in that: comprise outer cylinder body (2) and be set in the inner barrel (1) of this outer cylinder body (2) inner chamber, also locked by the clamping occlusion structure be provided with between described outer cylinder body (2) and inner barrel (1), wherein when described inner barrel (1) is pulled back along outer cylinder body (2) inner chamber, this clamping occlusion structure unclamps; Described inner barrel (1) top is connected with needle holder (5), this needle holder (5) top is provided with needle tubing (9), this inner barrel (1) inner chamber is also provided with core bar (3) simultaneously, and the plug (4) that this core bar (3) is set with by top and described inner barrel (1) inner chamber form and be slidably connected.
2. a kind of safety according to claim 1 is pulled back type self-destroyed bilayer engaging syringe, it is characterized in that: described clamping occlusion structure comprises the elastic ring projection (101) that is set on inner barrel (1) outer wall upper end and is arranged on outer cylinder body (2) inner chamber for installing the annular groove (201) of described elastic ring projection (101).
3. a kind of type self-destroyed bilayer engaging syringe of pulling back safely according to claim 2, it is characterized in that: described inner barrel (1) outer wall is set with multiple described elastic ring projection (101) spaced apart, on this outer cylinder body (2) inner chamber, correspondence is provided with multiple described annular groove (201) simultaneously.
4. the one according to Claims 2 or 3 is pulled back safely type self-destroyed bilayer engaging syringe, it is characterized in that: the longitudinal section of described elastic ring projection (101) is " ∠ " ramp type cross section structure of resistance to sliding when pulling back along outer cylinder body (2) inner chamber for increasing inner barrel (1).
5. the one according to claim 1 or 2 or 3 pull back safely type self-destroyed bilayer engaging syringe, it is characterized in that: between described outer cylinder body (2) and inner barrel (1) circumference being nested in intracavity in it, be preset with annular gap (8).
6. the one according to claim 1 or 2 or 3 pull back safely type self-destroyed bilayer engaging syringe, it is characterized in that: described needle holder (4) be integrated injection mo(u)lding make, this needle holder (4) is threadedly connected on described inner barrel (1) top simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817695.8U CN204395142U (en) | 2014-12-22 | 2014-12-22 | A kind of type self-destroyed bilayer engaging syringe of pulling back safely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817695.8U CN204395142U (en) | 2014-12-22 | 2014-12-22 | A kind of type self-destroyed bilayer engaging syringe of pulling back safely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204395142U true CN204395142U (en) | 2015-06-17 |
Family
ID=53419046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420817695.8U Expired - Fee Related CN204395142U (en) | 2014-12-22 | 2014-12-22 | A kind of type self-destroyed bilayer engaging syringe of pulling back safely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204395142U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969845A (en) * | 2018-08-08 | 2018-12-11 | 四川普瑞斯生物科技有限公司 | A kind of novel low-resistance injector |
| CN109044827A (en) * | 2018-07-25 | 2018-12-21 | 重庆莱美药业股份有限公司 | A kind of mixed medicine glass of achievable drug container replacement |
| CN109260551A (en) * | 2018-10-31 | 2019-01-25 | 苏州大学附属第医院 | A kind of medical needle with safeguard protection and self-destroying function |
-
2014
- 2014-12-22 CN CN201420817695.8U patent/CN204395142U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109044827A (en) * | 2018-07-25 | 2018-12-21 | 重庆莱美药业股份有限公司 | A kind of mixed medicine glass of achievable drug container replacement |
| CN108969845A (en) * | 2018-08-08 | 2018-12-11 | 四川普瑞斯生物科技有限公司 | A kind of novel low-resistance injector |
| CN109260551A (en) * | 2018-10-31 | 2019-01-25 | 苏州大学附属第医院 | A kind of medical needle with safeguard protection and self-destroying function |
| CN109260551B (en) * | 2018-10-31 | 2024-01-09 | 苏州大学附属第一医院 | Medical needle with safety protection and self-destruction functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Ling Inventor after: Guo Xiaoqing Inventor after: He Rulan Inventor before: Chen Xia |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN XIA TO: SUN LING GUO XIAOQING HE RULAN |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |