CN102824672B - Automatic retracting type self-destruction injecting device - Google Patents
Automatic retracting type self-destruction injecting device Download PDFInfo
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- CN102824672B CN102824672B CN201210323543.8A CN201210323543A CN102824672B CN 102824672 B CN102824672 B CN 102824672B CN 201210323543 A CN201210323543 A CN 201210323543A CN 102824672 B CN102824672 B CN 102824672B
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- needle
- piston rod
- injection tube
- type self
- plug
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Abstract
The invention discloses an automatic retracting type self-destruction injecting device which comprises a needle holder, a needle sleeve, a needle tube, an injecting barrel connected with the needle holder, a piston rod, a rubber plug subassembly, a spring sleeve and a compressing spring, wherein the compressing direction of the compressing spring is in consistent with the direction of a central shaft of the injecting barrel; a stopping contact is arranged on the internal wall of the piston rod; a channel is arranged on the needle sleeve; a through hole for the lower end of the spring sleeve to pass through is arranged on the rubber plug subassembly, and the bottom of the rubber plug subassembly is matched with the internal bottom wall of a hollow chamber of the injecting barrel; and a hook capable of being blocked at the top end of the needle sleeve is also arranged at the lower end of the spring sleeve. According to the automatic retracting type self-destruction injecting device, the piston rod can be continuously pushed after the injection is carried out and the needle pipe is drawn out of a human body, and the needle pipe can be driven to upwards move through the spring sleeve, so that the safe self-destruction effect can be achieved; in the self-destruction process, the needle sleeve can be obliquely toped through a convex point, therefore, the probability that the needle pipe is exposed outside can be reduced; and the automatic retracting type self-destruction injecting device is simply and conveniently used, is safe and reliable in performance and can be widely applied.
Description
Technical field
The present invention relates to syringe art, be specifically related to automatic retracting type self-destroyed syringe.
Background technology
Well-known, syringe is as a kind of conventional medical equipment, is usually used in liquid or gas inject in bodily tissue.And general syringe generally comprises injection tube, needle tubing and piston rod composition on the market.But because this syringe does not adopt any type self-destroyed structure, its structure is still excellent after use, is easily used for reusing by bad personnel, thereby cause the serious consequence of infectious disease cross infection.
Summary of the invention
For the deficiencies in the prior art, object of the present invention is intended to provide a kind of automatic retracting type self-destroyed syringe, to be injected completing, needle tubing is extracted after human body, promote piston rod by continuation, can make needle tubing move upward under the drive of spring housing, thereby reach the effect of safety self-destruct.
For achieving the above object, the present invention adopts following technical scheme:
Automatic retracting type self-destroyed syringe, comprises needle stand, is arranged on needle guard part on needle stand, is fixed on needle tubing, the injection tube connecting with needle stand on needle guard part, is inserted in injection tube cavity and the piston rod that can move along the central axis direction of injection tube, is arranged in piston rod under shed and the plug assembly that can relative piston rod moves upward, is arranged on the spring housing that on plug assembly, also plug assembly moves upward relatively, 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 is also provided with to push up and is pressed on spring housing and makes the stop contact of Compress Spring in compressive state; Described needle guard part is provided with the passage being communicated with between injection tube cavity and needle tubing pipeline; This plug assembly is provided with for the interspersed perforation in spring housing lower end, and the interior diapire of the bottom surface of plug assembly and injection tube cavity matches; The lower end of this spring housing is also provided with the grab that can be buckled in needle guard part 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 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 matching with the first inclined plane.
The inwall of piston rod upper end is also provided with the 3rd inclined plane matching with the first inclined plane.
Described plug assembly comprises plug and is fixed on the snap ring on plug, and the upper end of snap ring is arranged in piston rod.
The upper end of snap ring is provided with the outer shroud edge extending 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 matches.
Spring housing is provided with the extension extending outwardly, and the end face of the bottom surface of this extension and plug assembly matches.
In this spring housing, be also fixed with plunger, the bottom surface place of keeping to the side of this plunger is provided with the plunger tangent plane under being tilted to, and this plunger tangent plane is provided with can be by the salient point of needle guard part oblique top.
The top of needle guard part is provided with the draw-in groove matching with grab.
The lower end of described injection tube is provided with the plug-in opening being communicated with cavity; Intert in plug-in opening the upper end of described needle guard part, and with the upper end interference fit of plug-in opening; The outer wall of this needle guard part is provided with the first inclination tangent plane, from the lower end of the first inclination tangent plane to 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 matching with the first inclination tangent plane.
The position that needle stand and injection tube join is provided with sealing ring.
Automatic retracting type self-destroyed syringe set forth in the present invention, its beneficial effect is:
1, to be injected completing, extracts needle tubing after human body, promotes piston rod by continuation, can make needle tubing move upward under the drive of spring housing, thereby reaches the effect of safety self-destruct;
2, in self-destruction process, can utilize salient point by needle guard part 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.
Brief description of the drawings
Fig. 1 is the structural representation of automatic retracting type self-destroyed syringe of the present invention;
Fig. 2 is the schematic diagram of automatic retracting type self-destroyed syringe of the present invention in injection zero-bit state;
Fig. 3 is the schematic diagram of automatic retracting type self-destroyed syringe of the present invention in self-destruction state;
Wherein, 1, needle stand; 11, sealing ring; 2, needle guard part; 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.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, automatic retracting type self-destroyed syringe of the present invention is described further, understands the present invention's technical thought required for protection so that clearer.
As shown in Figure 1, 2, be automatic retracting type self-destroyed syringe of the present invention, comprise needle stand 1, be arranged on needle guard part 2 on needle stand 1, be fixed on the needle tubing 3 on needle guard part 2.Because needle tubing 3 is fixed on needle guard part 2, by adopting the needle guard part 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 arranged in piston rod 5 under sheds and the plug assembly that can relative piston rod 5 moves upward, be arranged on the spring housing 6 that on plug assembly, also plug assembly moves upward relatively, 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 is also provided with to push up and is pressed on spring housing 6 and makes the stop contact 51 of Compress Spring 7 in compressive state; Described needle guard part 2 is provided with the passage being communicated with between injection tube 4 cavitys and needle tubing 3 pipelines; This plug assembly is provided with for the interspersed perforation in spring housing 6 lower ends, and the interior diapire of the bottom surface of plug assembly and injection tube 4 cavitys matches; The lower end of this spring housing 6 is also provided with the grab 63 that can be buckled in needle guard part 2 tops.When use, to be injected completing, extracts needle tubing 3 after human body, promotes piston rod 5 by continuation, can make needle tubing 3 move upward under the drive of spring housing 6, thereby reaches the effect of automatic safe self-destruction.
Described plug assembly comprises plug 8 and is fixed on the snap ring 9 on plug 8, and the upper end of snap ring 9 is arranged in 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 extending outwardly, and this buckle mounted part is buckled in groove, thereby snap ring 9 and plug 8 are fixed together.In the time that plug assembly is pushed to injection zero-bit under the drive of piston rod 5, the resilience force that plug 8 is extruded generation contributes to upwards goring push spring cover 6.Spring housing 6 is provided with the extension extending outwardly, and the end face of the bottom surface of this extension and plug assembly matches.By adopting said structure, can make the relative plug assembly of spring housing 6 move upward.The upper end of snap ring 9 is provided with the outer shroud extending outwardly along 91, and the inwall of piston rod 5 is provided with the internal ring extending inwardly along 53, and this internal ring matches along 91 bottom surface along 53 end face and outer shroud.By adopting said structure, can make the relative piston rod 5 of plug assembly move 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 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 and 61 second inclined planes of mating mutually, the first inclined plane.In self-destruction process, by adopting the design on the first inclined plane 61 and the second inclined plane, can make spring housing 6 depart from swimmingly stop contact 51, prevent stuck situation.The inwall of piston rod 5 upper ends is also provided with the 3rd inclined plane 52 matching with the first inclined plane 61.In the time 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.
In this spring housing 6, be also fixed with plunger 64, the bottom surface place of keeping to the side 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 by the salient point 65 of needle guard part 2 oblique tops.When moving up to precalculated position under the elastic force effect of spring housing 6 at Compress Spring 7 and in static moment, needle guard part 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 by needle guard part 2 oblique tops, thereby reduce the probability that needle tubing 3 exposes.
The top of needle guard part 2 is provided with the draw-in groove 21 matching with grab 63.By adopting the cooperation of draw-in groove 21 and grab 63, can make the grab 63 of spring housing 6 be buckled in swimmingly on draw-in groove 21, and, also can guarantee both being connected firmly.
The lower end of described injection tube 4 is provided with the plug-in opening being communicated with cavity; Intert in plug-in opening the upper end of described needle guard part 2, and with the upper end interference fit of plug-in opening; The outer wall of this needle guard part 2 is provided with the first inclination tangent plane 22, from the lower end of the first inclination tangent plane 22 to 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 matching with the first inclination tangent plane 22.By adopting said structure, can booster injection external member 2 and being connected of injection tube 4, prevent the situation that occurs that in injection process needle guard part 2 moves.Preferably, this needle stand 1 is sleeved on 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.
When use, promote piston rod 5 downwards, start injection operation, and along with the motion of piston rod 5, plug assembly moves to injection zero-bit, namely, moves to the interior diapire of injection tube 4, thereby complete injection, because this syringe is by rationally arranging, can guarantee that its residual quantity is low.Extract after human body until needle tubing 3, as shown in Figure 3, continue to promote piston rod 5 downwards, under the effect of the upwards holding power that now spring housing 6 applies at plug assembly, depart from stop contact 51.Compress Spring 7 discharges elastic force, and because spring housing 6 has been buckled on needle guard part 2, now spring housing 6 drives needle guard part 2 and needle tubing 3 to move upward under the elastic force effect of Compress Spring 7, thereby reaches the effect of safety self-destruct.
To one skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the claims in the present invention.
Claims (7)
1. automatic retracting type self-destroyed syringe, is characterized in that: comprise needle stand, be arranged on needle guard part on needle stand, be fixed on needle tubing, the injection tube connecting with needle stand on needle guard part, be inserted in injection tube cavity and the piston rod that can move along the central axis direction of injection tube, be arranged in piston rod under shed and the plug assembly that can relative piston rod moves upward, be arranged on the spring housing that on plug assembly, also plug assembly moves upward relatively, 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 is also provided with to push up and is pressed on spring housing and makes the stop contact of Compress Spring in compressive state; Described needle guard part is provided with the passage being communicated with between injection tube cavity and needle tubing pipeline; This plug assembly is provided with for the interspersed perforation in spring housing lower end, and the interior diapire of the bottom surface of plug assembly and injection tube cavity matches; The lower end of this spring housing is also provided with the grab that can be buckled in needle guard part top;
Wherein, described plug assembly comprises plug and is fixed on the snap ring on plug, and the upper end of snap ring is arranged in piston rod; The upper end of snap ring is provided with the outer shroud edge extending 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 matches;
Spring housing is provided with the extension extending outwardly, and the end face of the bottom surface of this extension and plug assembly matches.
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, from the lower end on the first inclined plane to 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 matching with the first inclined plane.
3. automatic retracting type self-destroyed syringe as claimed in claim 2, is characterized in that: the inwall of piston rod upper end is also provided with the 3rd inclined plane matching with the first inclined plane.
4. automatic retracting type self-destroyed syringe as claimed in claim 1, is characterized in that: in this spring housing, be also fixed with plunger, the bottom surface place of keeping to the side of this plunger is provided with the plunger tangent plane under being tilted to, and this plunger tangent plane is provided with can be by the salient point of needle guard part oblique top.
5. automatic retracting type self-destroyed syringe as claimed in claim 1, is characterized in that: the top of needle guard part is provided with the draw-in groove matching with grab.
6. automatic retracting type self-destroyed syringe as claimed in claim 1, is characterized in that: the lower end of described injection tube is provided with the plug-in opening being communicated with cavity; Intert in plug-in opening the upper end of described needle guard part, and with the upper end interference fit of plug-in opening; The outer wall of this needle guard part is provided with the first inclination tangent plane, from the lower end of the first inclination tangent plane to 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 matching with the first inclination tangent plane.
7. 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 |
|---|---|---|---|
| CN201210323543.8A CN102824672B (en) | 2012-09-04 | 2012-09-04 | Automatic retracting type self-destruction injecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323543.8A CN102824672B (en) | 2012-09-04 | 2012-09-04 | Automatic retracting type self-destruction injecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102824672A CN102824672A (en) | 2012-12-19 |
| CN102824672B true CN102824672B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210323543.8A Active CN102824672B (en) | 2012-09-04 | 2012-09-04 | Automatic retracting type self-destruction injecting device |
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| Country | Link |
|---|---|
| CN (1) | CN102824672B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008850A1 (en) | 2015-07-15 | 2017-01-19 | Guangdong Intmed Medical Appliance Co., Ltd | Syringe with retractable needle |
| CN109701115A (en) * | 2018-11-30 | 2019-05-03 | 衡刚 | A kind of automatic self-destruction syringe |
| CN111012975A (en) * | 2020-01-21 | 2020-04-17 | 贝普医疗科技有限公司 | Resilience type injector with shielding needle eccentric baffle |
| CN111840712A (en) * | 2020-08-27 | 2020-10-30 | 汕头华尔怡医疗器械有限公司 | Needle head structure and syringe with same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200980874Y (en) * | 2006-12-06 | 2007-11-28 | 普宁市海鸥医疗器械有限公司 | Spring type safety self-destructing syringe |
| CN101143238A (en) * | 2007-10-25 | 2008-03-19 | 罗松能 | Spring type safety self-destruction syringe |
| CN202777327U (en) * | 2012-09-04 | 2013-03-13 | 广东顺德全能医事工业有限公司 | Automatic retracting self-destruction injector |
-
2012
- 2012-09-04 CN CN201210323543.8A patent/CN102824672B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200980874Y (en) * | 2006-12-06 | 2007-11-28 | 普宁市海鸥医疗器械有限公司 | Spring type safety self-destructing syringe |
| CN101143238A (en) * | 2007-10-25 | 2008-03-19 | 罗松能 | Spring type safety self-destruction syringe |
| CN202777327U (en) * | 2012-09-04 | 2013-03-13 | 广东顺德全能医事工业有限公司 | Automatic retracting self-destruction injector |
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| Publication number | Publication date |
|---|---|
| CN102824672A (en) | 2012-12-19 |
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Effective date of registration: 20170711 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: Guangzhou 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. |
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| TR01 | Transfer of patent right |