CN103990209A - Needle base for pullback-type self-destroying syringe - Google Patents
Needle base for pullback-type self-destroying syringe Download PDFInfo
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- CN103990209A CN103990209A CN201410122574.6A CN201410122574A CN103990209A CN 103990209 A CN103990209 A CN 103990209A CN 201410122574 A CN201410122574 A CN 201410122574A CN 103990209 A CN103990209 A CN 103990209A
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- inner tube
- tube
- type self
- needle stand
- syringe
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Abstract
The invention discloses a needle base for a pullback-type self-destroying syringe. The need base for the pullback-type self-destroying syringe comprises an outer tube and an inner tube. The outer tube is of a hollow tube structure. The front end of a syringe tube is sleeved with the outer tube. The inner wall of the outer tube is provided with a first annular inclined plane. The first annular inclined plane is of a frustum structure. The top face of the frustum structure faces towards a syringe needle. The inner tube is of a hollow tube structure. The inner tube comprises a front section for fixing the syringe needle, a middle section and a rear section for being pulled back, wherein the middle section abuts against the first annular inclined plane, and the outer wall of the middle section of the inner tube is provided with a second annular inclined plane matched with the first annular inclined plane. In the injection process, the inner tube abuts against the first annular inclined plane through the second annular inclined plane to form a sealing and connecting structure between the inner tube and the outer tube. According to the needle base for the pullback-type self-destroying syringe, close fit between the inner tube and the outer tube in the injection process is achieved in the mode that the second annular inclined plane abuts against the first annular inclined plane, and the sealing performance between the inner tube and the outer tube is enhanced.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of syringe, particularly a kind of needle stand for haulback type self-destroyed syringe.
Background technology
Common injector for medical purpose, owing to reusing, easily causes the propagation of blood borne disease (as hepatitis B, acquired immune deficiency syndrome (AIDS) etc.) between crowd, and these blood borne diseases all exist serious social harm.The viral cross infection causing for fear of the syringe being used by secondary, syringe should be discarded after once using, but still have at present the irregular medical institutions of some regional minorities again to utilize syringe, so between patient, the probability of cross infection increases, and even directly causes the generation of malpractice.Present widely used disposable syringe belongs to managerial concept, is not " disposable ", but can repeated multiple timesly uses in serviceability, so will leave hidden danger to cross infection, and the propagation that tends to produce the disease of.Paid close attention to disposable syringe that can auto-destruct function after using in recent years, some syringes are provided with the shackle member engaging with needle stand on push rod, after injection, described shackle member can make push rod engage with needle stand, make push-rod lock in needle stand, can not reuse, thereby reach the object of self-destruction.Outside but syringe needle is still exposed to after this class syringe self-destruction, very easily stab hospitalized patients, cause new cross infection, and be unfavorable for destroying.People, by improving structure, have designed a kind of safe self-breaking syringe of needle retractable.This type of syringe need to design special needle stand structure for the syringe needle of pulling back, but existing this type of syringe exists the problems such as needle stand structure complexity, manufacturing cost is high, self-destruction effect is undesirable.
Based on the above, a kind of necessary property of exploitation of simple in structure, the needle stand for haulback type self-destroyed syringe that cost is low.
Summary of the invention
For the weak point existing in above-mentioned technology, the invention provides a kind of needle stand for haulback type self-destroyed syringe, described needle stand adopts the mode of interference fit that inner tube is nested in described outer tube, by the inner tube of pulling back, syringe needle band is back in injection tube and realizes self-destruction, the sealing while designing special fit system with realization injection between described outer tube of while and described inner tube between inner and outer pipes.
Described a kind of needle stand for haulback type self-destroyed syringe, comprises outer tube, be hollow tube structure, described outer tube sleeve is connected to injection tube front end, and described outer tube wall is provided with the first annular slope, described the first annular slope is frustum type structure, and described frustum type structure end face is towards syringe needle one end; Inner tube, is hollow tube structure, and described inner tube comprises the leading portion of fixed needle, forms the stage casing of abutting structure and the back segment for pulling back with described the first annular slope; Wherein, described inner tube stage casing outer wall is provided with the second annular slope matching with described the first annular slope, when injection described in inner tube support described the first annular slope by described the second annular slope and form the Hermetical connecting structure between described inner tube and described outer tube.
Preferably, the described needle stand for haulback type self-destroyed syringe, wherein, described inner tube leading portion top inwall is inverted cone-shaped structure, and described inner tube leading portion inwall is also provided with blistered storage glue section in order to bonding described syringe needle.
Preferably, the described needle stand for haulback type self-destroyed syringe, wherein, described outer tube top spout diameter equates with described inner tube top mouth of pipe external diameter.
Preferably, the described needle stand for haulback type self-destroyed syringe, wherein, described stage casing body external diameter is greater than described leading portion or described back segment body external diameter.
Preferably, the described needle stand for haulback type self-destroyed syringe, wherein, described back segment is resisted against resiliency supported end top in injection tube.
Preferably, the described needle stand for haulback type self-destroyed syringe, wherein, described resiliency supported end is an elasticity mesh.
Preferably, the described needle stand for haulback type self-destroyed syringe, wherein, described stage casing diameter is less than or equal to described elastic network(s) Kongzui major diameter.
The beneficial effect of the needle stand for haulback type self-destroyed syringe provided by the invention: 1) production cost is low, material is working of plastics, and on market, existing ordinary syringe needle stand cost is basic identical; 2) simple in structure, self-destruction is effective, and inner tube and outer tube structure are all comparatively simple, and inner tube is connected by the mode of interference fit with outer tube, and when self-destruction, inner and outer pipes separates realizes self-destruction; 3) good sealing effect, when injection, described inner tube is supported described the first annular slope by the second annular slope and is realized and the closely cooperating of described outer tube, and ensures that medicinal liquid is unlikely to flow out from inner and outer pipes junction.
Brief description of the drawings
Fig. 1 is the needle stand middle external tube structural representation for haulback type self-destroyed syringe of the present invention;
Fig. 2 is the needle stand inner tube structure schematic diagram for haulback type self-destroyed syringe of the present invention;
Fig. 3 is the needle stand inner tube internal structure schematic diagram for haulback type self-destroyed syringe of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to description word.
Shown in Fig. 1, Fig. 2 and Fig. 3, a kind of needle stand for haulback type self-destroyed syringe described in its explanation one embodiment of the invention, comprise, outer tube 2, be hollow tube structure, described outer tube 2 is socketed on injection tube front end, and described outer tube 2 inwalls are provided with the first annular slope, described the first annular slope is frustum type structure, and described frustum type structure end face is towards syringe needle one end; Inner tube, is hollow tube structure, and described inner tube comprises the leading portion 4 of fixed needle, forms the stage casing 3 of abutting structure and the back segment 1 for pulling back with described the first annular slope; Wherein, described inner tube stage casing 3 outer walls are provided with the second annular slope matching with described the first annular slope, when injection described in inner tube support described the first annular slope by described the second annular slope and form the Hermetical connecting structure between described inner tube and described outer tube 2.Described inner tube leading portion 4 top inwalls are inverted cone-shaped structure, and described inner tube leading portion 4 inwalls are also provided with blistered storage glue section 5 in order to bonding described syringe needle.Described outer tube 2 top spout diameters equate with described inner tube top mouth of pipe external diameter.Described stage casing 3 body external diameters are greater than described leading portion 4 or described back segment 1 body external diameter.In injection tube, be provided with resiliency supported end, described back segment 1 is resisted against described resiliency supported end place.Described resiliency supported end is an elasticity mesh.Described stage casing 3 diameters are less than or equal to described resiliency supported end maximum gauge.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in description and embodiment, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the general concept that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (7)
1. for a needle stand for haulback type self-destroyed syringe, it is characterized in that, comprise,
Outer tube, is hollow tube structure, and described outer tube sleeve is connected to injection tube front end, and described outer tube wall is provided with the first annular slope, and described the first annular slope is frustum type structure, and described frustum type structure end face is towards syringe needle one end;
Inner tube, is hollow tube structure, and described inner tube comprises the leading portion of fixed needle, forms the stage casing of abutting structure and the back segment for pulling back with described the first annular slope;
Wherein, described inner tube stage casing outer wall is provided with the second annular slope matching with described the first annular slope, when injection described in inner tube support described the first annular slope by described the second annular slope and form closely cooperating between described inner tube and described outer tube.
2. the needle stand for haulback type self-destroyed syringe according to claim 1, is characterized in that, described inner tube leading portion top inwall is inverted cone-shaped structure, and described inner tube leading portion inwall is also provided with blistered storage glue section in order to bonding described syringe needle.
3. the needle stand for haulback type self-destroyed syringe according to claim 1, is characterized in that, described outer tube top spout diameter equates with described inner tube top mouth of pipe external diameter.
4. the needle stand for haulback type self-destroyed syringe according to claim 1, is characterized in that, described stage casing body external diameter is greater than described leading portion or described back segment body external diameter.
5. the needle stand for haulback type self-destroyed syringe according to claim 4, is characterized in that, described back segment bottom is resisted against the resiliency supported end top arranging in injection tube.
6. the needle stand for haulback type self-destroyed syringe according to claim 5, is characterized in that, described resiliency supported end is an elasticity mesh.
7. the needle stand for haulback type self-destroyed syringe according to claim 6, is characterized in that, described stage casing diameter is less than or equal to described elastic network(s) Kongzui major diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122574.6A CN103990209A (en) | 2014-03-28 | 2014-03-28 | Needle base for pullback-type self-destroying syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122574.6A CN103990209A (en) | 2014-03-28 | 2014-03-28 | Needle base for pullback-type self-destroying syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103990209A true CN103990209A (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410122574.6A Pending CN103990209A (en) | 2014-03-28 | 2014-03-28 | Needle base for pullback-type self-destroying syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103990209A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555149A (en) * | 2017-09-19 | 2018-01-09 | 李奇元 | One kind is used for medicinal syringe needle and collects unloading auxiliary device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201098441Y (en) * | 2007-06-18 | 2008-08-13 | 黄灵扬 | Safety self-breaking injector capable of exchanging steel needle seat |
| CN201320335Y (en) * | 2008-12-17 | 2009-10-07 | 安卓国际(南通)医疗器械有限公司 | Self-destructing needlepoint retractile safe syringe |
| CN201353346Y (en) * | 2008-12-17 | 2009-12-02 | 安卓国际(南通)医疗器械有限公司 | Needle holder of automatically-destroyed safe syringe with retractable needle point |
| CN203971088U (en) * | 2014-03-28 | 2014-12-03 | 顶一医疗设备（昆山）有限公司 | A kind of needle stand for haulback type self-destroyed syringe |
-
2014
- 2014-03-28 CN CN201410122574.6A patent/CN103990209A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201098441Y (en) * | 2007-06-18 | 2008-08-13 | 黄灵扬 | Safety self-breaking injector capable of exchanging steel needle seat |
| CN201320335Y (en) * | 2008-12-17 | 2009-10-07 | 安卓国际(南通)医疗器械有限公司 | Self-destructing needlepoint retractile safe syringe |
| CN201353346Y (en) * | 2008-12-17 | 2009-12-02 | 安卓国际(南通)医疗器械有限公司 | Needle holder of automatically-destroyed safe syringe with retractable needle point |
| CN203971088U (en) * | 2014-03-28 | 2014-12-03 | 顶一医疗设备（昆山）有限公司 | A kind of needle stand for haulback type self-destroyed syringe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555149A (en) * | 2017-09-19 | 2018-01-09 | 李奇元 | One kind is used for medicinal syringe needle and collects unloading auxiliary device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140820 |
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| RJ01 | Rejection of invention patent application after publication |