CN202777327U - Automatic retracting self-destruction injector - Google Patents
Automatic retracting self-destruction injector Download PDFInfo
- Publication number
- CN202777327U CN202777327U CN201220449721.7U CN201220449721U CN202777327U CN 202777327 U CN202777327 U CN 202777327U CN 201220449721 U CN201220449721 U CN 201220449721U CN 202777327 U CN202777327 U CN 202777327U
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- CN
- China
- Prior art keywords
- needle
- injection tube
- piston rod
- needle guard
- plug
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- 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 - Lifetime
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Abstract
The utility model discloses an automatic retracting self-destruction injector which comprises a needle stand, a needle guard, a needle tube, a syringe connected with the needle stand, a piston rod, a rubber plug assembly, a spring sleeve and a compression spring, wherein a compression direction of the compression spring is with the same as a center shaft direction of the syringe; stop contacts are arranged on an inner wall of the piston rod; a channel is formed in the needle guard; a penetrable hole allowing the lower end of the spring sleeve to penetrate through is formed in the rubber plug assembly; the bottom surface of the rubber plug assembly is matched with an inner bottom wall of a cavity of the syringe; and a clamping hook capable of being buckled at the top end of the needle guard is arranged at the lower end of the spring sleeve. After injection is finished and the needle tube is pulled out of a human body, the piston rod is pushed continuously and the needle tube can move up under the driving of the spring sleeve, so that a safe self-destruction effect can be achieved; in a self-destruction process, the needle guard can be ejected obliquely by a bump, so that the probability of exposure of the needle tube is reduced; and the injector is simple, convenient and quick to use, and safe and reliable in performance, and facilitates extensive use.
Description
Technical field
This utility model relates to syringe art, is specifically related to the automatic retracting type self-destroyed syringe.
Background technology
Well-known, syringe is as a kind of medical equipment commonly used, is usually used in liquid or gas inject in bodily tissue.And general syringe generally comprises injection tube, needle tubing and piston rod and forms on the market.But because this syringe does not adopt any type self-destroyed structure, its structure is still excellent after use, is used for reusing by bad personnel easily, thereby causes the serious consequence of infectious disease cross infection.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of automatic retracting type self-destroyed syringe, to be injected finishing, after needle tubing extracted human body, by continuing the pushing piston bar, needle tubing is moved upward under the drive of spring housing, thereby reach the effect of safety self-destruct.
For achieving the above object, this utility model adopts following technical scheme:
The automatic retracting type self-destroyed syringe, is inserted in the injection tube cavity and the piston rod that can move along the central axis direction of injection tube, is installed in the piston rod under shed and the plug assembly that can relative piston rod moves upward, is installed on the plug assembly also the spring housing that relative plug assembly moves upward, the Compress Spring between plug assembly top and spring housing at the injection tube that comprises needle stand, is installed in needle guard spare on the needle stand, is fixed on needle tubing on the needle guard spare, connects with needle stand; The compression direction of described Compress Spring is consistent with the central axis direction of injection tube; The inwall of piston rod also is provided with to push up and is pressed on the spring housing and makes Compress Spring be in the stop contact of compressive state; Described needle guard spare is provided with the passage that is communicated with between injection tube cavity and the needle tubing pipeline; This plug assembly is provided with the perforation that interts for the spring housing lower end, and the interior diapire of the bottom surface of plug assembly and injection tube cavity is complementary; The lower end of this spring housing also is provided with the grab that can be buckled in needle guard spare top.
Described spring housing is revolving body, and the outer peripheral edges on its top are provided with the first inclined plane, and from the lower end on the first inclined plane to the upper end, the point on this first inclined plane and the distance of injection tube central shaft reduce gradually; This stop contact is provided with the second inclined plane that is complementary with the first inclined plane.
The inwall of piston rod upper end also is provided with the 3rd inclined plane that is complementary with the first inclined plane.
Described plug assembly comprises plug and is fixed on snap ring on the plug that the upper end of snap ring is installed in the piston rod.
The upper end of snap ring is provided with the outer shroud edge that extends outwardly, and the inwall of piston rod is provided with the internal ring edge of extending inwardly, and the bottom surface on the end face on this internal ring edge and outer shroud edge is complementary.
Spring housing is provided with the extension that extends outwardly, and the end face of the bottom surface of this extension and plug assembly is complementary.
Also be fixed with plunger in this spring housing, the place of keeping to the side, bottom surface of this plunger is provided with the plunger tangent plane under being tilted to, and this plunger tangent plane is provided with can be with the salient point of needle guard spare oblique top.
The top of needle guard spare is provided with the draw-in groove that is complementary with grab.
The lower end of described injection tube is provided with the plug-in opening that is communicated with cavity; Intert in plug-in opening the upper end of described needle guard spare, and with the upper end interference fit of plug-in opening; The outer wall of this needle guard spare is provided with the first inclination tangent plane, from the lower end of the first inclination tangent plane to the upper end, point on this first inclination tangent plane and the distance of injection tube central shaft reduce gradually, and the inwall of plug-in opening upper end is provided with the second inclination tangent plane that is complementary with the first inclination tangent plane.
The position that needle stand and injection tube join is provided with sealing ring.
The automatic retracting type self-destroyed syringe that this utility model is set forth, its beneficial effect is:
1, to be injected finishing, needle tubing extracted human body after, by continuing the pushing piston bar, needle tubing is moved upward under the drive of spring housing, thereby reach the effect of safety self-destruct;
2, in the self-destruction process, can utilize salient point with needle guard spare oblique top, thereby reduce the probability that needle tubing exposes, further improve its security performance;
3, its easy to use convenient, performance safety is reliable, be conducive to be widely used.
Description of drawings
Fig. 1 is the structural representation of this utility model automatic retracting type self-destroyed syringe;
Fig. 2 is the sketch map that this utility model automatic retracting type self-destroyed syringe is in injection zero-bit state;
Fig. 3 is the sketch map that this utility model automatic retracting type self-destroyed syringe is in the self-destruction state;
Wherein, 1, needle stand; 11, sealing ring; 2, needle guard spare; 21, draw-in groove; 22, the first inclination tangent plane; 3, needle tubing; 4, injection tube; 41, the second inclination tangent plane; 5, piston rod; 51, stop contact; 52, the 3rd inclined plane; 53, internal ring edge; 6, spring housing; 61, the first inclined plane; 63, grab; 64, plunger; 65, salient point; 7, Compress Spring; 8, plug; 9, snap ring; 91, outer shroud edge.
The specific embodiment
Below, by reference to the accompanying drawings and the specific embodiment, this utility model automatic retracting type self-destroyed syringe is described further, so that clearerly understand this utility model technical thought required for protection.
As shown in Figure 1, 2, be this utility model automatic retracting type self-destroyed syringe, comprise needle stand 1, be installed in needle guard spare 2 on the needle stand 1, be fixed on the needle tubing 3 on the needle guard spare 2.Because needle tubing 3 is fixed on the needle guard spare 2, by adopting the needle guard spare 2 of differing needles number, just can obtain the syringe of differing needles number.This automatic retracting type self-destroyed syringe also comprises the injection tube 4 that connects with needle stand 1, be inserted in injection tube 4 cavitys and the piston rod 5 that can move along the central axis direction of injection tube 4, be installed in piston rod 5 under sheds and the plug assembly that can relative piston rod 5 moves upward, be installed on the plug assembly also the spring housing 6 that relative plug assembly moves upward, the Compress Spring 7 between plug assembly top and spring housing 6; The compression direction of described Compress Spring 7 is consistent with the central axis direction of injection tube 4; The inwall of piston rod 5 also is provided with to push up and is pressed on the spring housing 6 and makes Compress Spring 7 be in the stop contact 51 of compressive state; Described needle guard spare 2 is provided with the passage that is communicated with between injection tube 4 cavitys and needle tubing 3 pipelines; This plug assembly is provided with the perforation that interts for spring housing 6 lower ends, and the interior diapire of the bottom surface of plug assembly and injection tube 4 cavitys is complementary; The lower end of this spring housing 6 also is provided with the grab 63 that can be buckled in needle guard spare 2 tops.During use, to be injected finishing, needle tubing 3 extracted human body after, by continuing pushing piston bar 5, needle tubing 3 is moved upward under the drive of spring housing 6, thereby reach the effect of automatic safe self-destruction.
Described plug assembly comprises plug 8 and is fixed on snap ring 9 on the plug 8 that the upper end of snap ring 9 is installed in the piston rod 5.Preferably, plug 8 is provided with and the groove of boring a hole and being communicated with, and the lower end of snap ring 9 is provided with the buckle mounted part that extends outwardly, and this buckle mounted part is buckled in the groove, thereby snap ring 9 and plug 8 are fixed together.When the plug assembly was pushed to the injection zero-bit under the drive of piston rod 5, the resilience force that plug 8 is extruded generation helped upwards goring push spring cover 6.Spring housing 6 is provided with the extension that extends outwardly, and the end face of the bottom surface of this extension and plug assembly is complementary.By adopting said structure, spring housing 6 relative plug assemblies are moved upward.The upper end of snap ring 9 is provided with the outer shroud that extends outwardly along 91, and the inwall of piston rod 5 is provided with the internal ring that extends inwardly along 53, and end face and outer shroud the bottom surface along 91 of this internal ring along 53 is complementary.By adopting said structure, the relative piston rod 5 of plug assembly is moved upward.
Described spring housing 6 is revolving body, and the outer peripheral edges on its top are provided with the first inclined plane 61, and from the lower end on the first inclined plane 61 to the upper end, the distance of the point on this first inclined plane 61 and injection tube 4 central shafts reduces gradually; This stop contact 51 is provided with the second inclined planes with the first inclined plane phase 61 couplings.In the self-destruction process, by adopting the design on the first inclined plane 61 and the second inclined plane, can make spring housing 6 break away from swimmingly stop contact 51, prevent stuck situation.The inwall of piston rod 5 upper ends also is provided with the 3rd inclined plane 52 that is complementary with the first inclined plane 61.When moving upward under the elastic force effect of spring housing 6 at Compress Spring 7, by adopting the design on the 3rd inclined plane 52, can effectively cushion its impulsive force.
Also be fixed with plunger 64 in this spring housing 6, the place of keeping to the side, bottom surface of this plunger 64 is provided with the plunger tangent plane under being tilted to, and this plunger tangent plane is provided with can be with the salient point 65 of needle guard spare 2 oblique tops.Under the elastic force effect of spring housing 6 at Compress Spring 7, move up to the precalculated position and be in static moment, needle guard spare 2 still continues to move upward under the effect of inertia, and contact with salient point 65, its run-off the straight under the thrusting action of salient point 65, that is to say and utilize salient point 65 with needle guard spare 2 oblique tops, thereby reduce the probability that needle tubing 3 exposes.
The top of needle guard spare 2 is provided with the draw-in groove 21 that is complementary with grab 63.By adopting the cooperation of draw-in groove 21 and grab 63, the grab 63 of spring housing 6 is buckled on the draw-in groove 21 swimmingly, and, also can guarantee both being connected firmly.
The lower end of described injection tube 4 is provided with the plug-in opening that is communicated with cavity; Intert in plug-in opening the upper end of described needle guard spare 2, and with the upper end interference fit of plug-in opening; The outer wall of this needle guard spare 2 is provided with the first inclination tangent plane 22, from the lower end of the first inclination tangent plane 22 to the upper end, point on this first inclination tangent plane 22 and the distance of injection tube 4 central shafts reduce gradually, and the inwall of plug-in opening upper end is provided with the second inclination tangent plane 41 that is complementary with the first inclination tangent plane 22.By adopting said structure, but being connected of booster injection external member 2 and injection tube 4 prevents from occurring the situation that needle guard spare 2 moves in injection process.Preferably, this needle stand 1 is sleeved on the injection tube 4, and needle stand 1 is provided with sealing ring 11 with the position that injection tube 4 joins, to play excellent sealing and increasing friction force effect.
During use, downward pushing piston bar 5, the start injection operation, and along with the motion of piston rod 5, the plug assembly moves to the injection zero-bit, namely, moves to the interior diapire of injection tube 4, thereby finish injection, because this syringe can guarantee that by rationally arranging its residual quantity is low.After needle tubing 3 is extracted human body, as shown in Figure 3, continue downward pushing piston bar 5, spring housing 6 breaks away from stop contact 51 under the effect of the upwards holding power that the plug assembly applies at this moment.Compress Spring 7 discharges elastic force, because spring housing 6 has been buckled on the needle guard spare 2, this moment, spring housing 6 drive needle guard spares 2 and needle tubing 3 moved upward under the elastic force effect of Compress Spring 7, thereby reached the effect of safety self-destruct.
To one skilled in the art, can according to technical scheme described above and design, make other various corresponding changes and deformation, and these all changes and deformation should belong within the protection domain of this utility model claim all.
Claims (10)
1. automatic retracting type self-destroyed syringe is characterized in that: the injection tube that comprises needle stand, is installed in needle guard spare on the needle stand, is fixed on needle tubing on the needle guard spare, connects with needle stand, be inserted in the injection tube cavity and the piston rod that can move along the central axis direction of injection tube, be installed in the piston rod under shed and the plug assembly that can relative piston rod moves upward, be installed on the plug assembly also the spring housing that relative plug assembly moves upward, the Compress Spring between plug assembly top and spring housing; The compression direction of described Compress Spring is consistent with the central axis direction of injection tube; The inwall of piston rod also is provided with to push up and is pressed on the spring housing and makes Compress Spring be in the stop contact of compressive state; Described needle guard spare is provided with the passage that is communicated with between injection tube cavity and the needle tubing pipeline; This plug assembly is provided with the perforation that interts for the spring housing lower end, and the interior diapire of the bottom surface of plug assembly and injection tube cavity is complementary; The lower end of this spring housing also is provided with the grab that can be buckled in needle guard spare top.
2. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: described spring housing is revolving body, and the outer peripheral edges on its top are provided with the first inclined plane, and from the lower end on the first inclined plane to the upper end, the point on this first inclined plane and the distance of injection tube central shaft reduce gradually; This stop contact is provided with the second inclined plane that is complementary with the first inclined plane.
3. automatic retracting type self-destroyed syringe as claimed in claim 2, it is characterized in that: the inwall of piston rod upper end also is provided with the 3rd inclined plane that is complementary with the first inclined plane.
4. automatic retracting type self-destroyed syringe as claimed in claim 1 is characterized in that: described plug assembly comprises plug and is fixed on snap ring on the plug that the upper end of snap ring is installed in the piston rod.
5. automatic retracting type self-destroyed syringe as claimed in claim 4, it is characterized in that: the upper end of snap ring is provided with the outer shroud edge that extends outwardly, and the inwall of piston rod is provided with the internal ring edge of extending inwardly, and the bottom surface on the end face on this internal ring edge and outer shroud edge is complementary.
6. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: spring housing is provided with the extension that extends outwardly, and the end face of the bottom surface of this extension and plug assembly is complementary.
7. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: also be fixed with plunger in this spring housing, the place of keeping to the side, bottom surface of this plunger is provided with the plunger tangent plane under being tilted to, and this plunger tangent plane is provided with can be with the salient point of needle guard spare oblique top.
8. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: the top of needle guard spare is provided with the draw-in groove that is complementary with grab.
9. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: the lower end of described injection tube is provided with the plug-in opening that is communicated with cavity; Intert in plug-in opening the upper end of described needle guard spare, and with the upper end interference fit of plug-in opening; The outer wall of this needle guard spare is provided with the first inclination tangent plane, from the lower end of the first inclination tangent plane to the upper end, point on this first inclination tangent plane and the distance of injection tube central shaft reduce gradually, and the inwall of plug-in opening upper end is provided with the second inclination tangent plane that is complementary with the first inclination tangent plane.
10. automatic retracting type self-destroyed syringe as claimed in claim 1 is characterized in that:
The position that needle stand and injection tube join is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220449721.7U CN202777327U (en) | 2012-09-04 | 2012-09-04 | Automatic retracting self-destruction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220449721.7U CN202777327U (en) | 2012-09-04 | 2012-09-04 | Automatic retracting self-destruction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202777327U true CN202777327U (en) | 2013-03-13 |
Family
ID=47804684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220449721.7U Expired - Lifetime CN202777327U (en) | 2012-09-04 | 2012-09-04 | Automatic retracting self-destruction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202777327U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824672A (en) * | 2012-09-04 | 2012-12-19 | 广东顺德全能医事工业有限公司 | Automatic retracting type self-destruction injecting device |
| CN108136134A (en) * | 2015-07-15 | 2018-06-08 | 广东因特圣医疗器械有限公司 | Syringe with retractable needle |
| CN110325233A (en) * | 2016-11-01 | 2019-10-11 | 科利登医疗系统公司 | Safety injector |
-
2012
- 2012-09-04 CN CN201220449721.7U patent/CN202777327U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824672A (en) * | 2012-09-04 | 2012-12-19 | 广东顺德全能医事工业有限公司 | Automatic retracting type self-destruction injecting device |
| CN102824672B (en) * | 2012-09-04 | 2014-06-18 | 广东顺德全能医事工业有限公司 | Automatic retracting type self-destruction injecting device |
| CN108136134A (en) * | 2015-07-15 | 2018-06-08 | 广东因特圣医疗器械有限公司 | Syringe with retractable needle |
| CN110325233A (en) * | 2016-11-01 | 2019-10-11 | 科利登医疗系统公司 | Safety injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170719 Address after: 528325 Guangdong city of Foshan province and Shunde District Science and Technology Industrial Park A District No. 1 South European Industrial Park No. three building Patentee after: Guangdong Intmed Medical Appliance Co.,Ltd. Address before: 528325, No. two industrial zone, Nanhua village, Foshan Town, Shunde District, Guangdong 6, China Patentee before: GUANGDONG SHUNDE ALMIGHTY MEDICAL INDUSTRIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |