CN204951829U - Automatic retracting type self -destruction injecting device - Google Patents
Automatic retracting type self -destruction injecting device Download PDFInfo
- Publication number
- CN204951829U CN204951829U CN201520503852.2U CN201520503852U CN204951829U CN 204951829 U CN204951829 U CN 204951829U CN 201520503852 U CN201520503852 U CN 201520503852U CN 204951829 U CN204951829 U CN 204951829U
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- China
- Prior art keywords
- needle
- injection tube
- spring housing
- needle guard
- type self
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- Expired - Fee Related
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- 238000002347 injection Methods 0.000 claims abstract description 54
- 239000007924 injection Substances 0.000 claims abstract description 54
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses an automatic retracting type self -destruction injecting device, the injection tube, piston rod, plug subassembly, spring housing, the compression spring that are connected including needle file, needle external member, needle tubing, with the needle file, injection tube lower extreme outside is provided with the portion of cup jointing, the needle file upper end arrange in the portion of cup jointing and with the inner wall of thread cooperation of the portion of cup jointing, the inner wall of the portion of cup jointing be provided with with the locking bump of needle file cooperation in order to lock needle file and the portion of cup jointing, needle external member outer peripheral edges are equipped with the screens piece, the spring housing upper end is fixed with the rubber pad of roof pressure in the compression spring upper end. At the self -destruction in -process, the rubber pad can reduce collision between compression spring and the spring housing collision and the noise of production, the needle external member is owing to use screens piece and injection tube fixed, relative small friction, and the needle external member breaks away from the injection tube easily, its is convenient, safety, stability, noise are little, is favorable to being widely used.
Description
Technical field
This utility model relates to syringe art, is specifically related to a kind of automatic retracting type self-destroyed syringe.
Background technology
As everyone knows, syringe, as a kind of conventional medical equipment, is usually used in liquid or gas inject in bodily tissue.For health consideration and how to process the syringe after use, use self-destroyed syringe to be the mode of Portable safety.Self-destroyed syringe on the market has manual haulback type, dismountable, automatic retracting type etc., but due to manual haulback type need when manual operation control dynamics, dismountable often due to component between snapping insecure and easily get loose when in use, in the process of automatic retracting type in self-destruction because member impacts produces noise, so can not meet the demand of people.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide that a kind of stability is high, noise is little, maneuverable automatic retracting type self-destroyed syringe, is conducive to widely using.
For achieving the above object, this utility model adopts following technical scheme:
A kind of automatic retracting type self-destroyed syringe, comprises needle stand, the needle guard part be arranged on needle stand, the injection tube that is fixed on the needle tubing on needle guard part and is connected with needle stand; Have in described injection tube cavity and along the piston rod of the central axis direction movement of injection tube and can be arranged in piston rod under shed and can the plug assembly that moves upward of opposing pistons bar; Described injection tube lower end outer setting has socket part, and needle stand upper end is placed in socket part and with the inner thread of socket part and coordinates, and the inwall of socket part is provided with and coordinates with the locking salient point of needle stand and socket part being locked with needle stand; Described needle guard part is arranged on needle stand, the upper end of needle guard part is provided with draw-in groove, needle guard part is positioned at below draw-in groove and is provided with card-bit part, this two card-bit part is symmetrically distributed in the both sides of injection tube central axis, card-bit part is the rod-like structure of pars intermedia outwardly convex, and between two card-bit parts, dead slot is dodged in formation one; Described plug assembly has can the spring housing that moves upward of plug assembly relatively; Described spring housing upper end is fixed with the rubber blanket that top is pressed on Compress Spring upper end, and spring housing lower end is provided with the grab with needle guard part upper end pocket matches; The lower end of described Compress Spring is resisted against on plug assembly; The inwall of described piston rod is provided with to push up and is pressed on spring housing and makes Compress Spring be in the stop contact of compressive state.
Preferably, the position of described needle stand and injection tube interior thereof is provided with sealing ring.
Preferably, described needle stand lower end inner wall is fluted, can with the salient point phase clamping of needle guard part lower end.
Preferably, described spring housing is revolving body, and the outer peripheral edge of its upper end is provided with the first inclined plane, and from the lower end of the first inclined plane to upper end, the point in this first inclined plane and the distance of injection tube central shaft reduce gradually.
Again preferably, described stop contact is provided with the second inclined plane matched with spring housing first inclined plane.
Again preferably, the inwall of described piston rod upper end is provided with the 3rd inclined plane matched with spring housing first inclined plane.
Preferably, described spring housing is provided with the extension extended outwardly, and the bottom surface of this extension and the end face of plug assembly match.
Preferably, be also fixed with plunger in described spring housing, the plunger tangent plane under the bottom surface place of keeping to the side of this plunger is provided with and is tilted to, this plunger tangent plane is provided with can by the salient point of needle guard part oblique top.
Preferably, the lower end of described injection tube is provided with the plug-in opening with cavity connects; The upper end of described needle guard part is interted in plug-in opening, and with the upper end interference fit of plug-in opening; The first oblique cut on the card-bit part outwardly convex part of described needle guard part outer peripheral edge and the inwall of plug-in opening upper end matches.
The automatic retracting type self-destroyed syringe that this utility model is set forth, its beneficial effect is:
1, by rotating needle stand, needle stand upper end being coordinated with the inner thread of socket part, injection tube lower end and by locking salient point locking positioning needle stand, avoiding needle stand and injection tube to depart from, greatly improving the stability of needle tubing;
2, be fixed with the rubber blanket that top is pressed on Compress Spring upper end in spring housing upper end, in the process of Compress Spring resilience, lower between Compress Spring and spring housing and collide produced noise;
3, needle guard part outer peripheral edge is provided with two shaft-like card-bit parts, and be the dead slot of hollow out between card-bit part, more easily there is deformation in card-bit part, promotes piston rod gently, needle guard part more easily can depart from injection tube plug-in opening and enter into injection tube inside, thus reaches the object of safety self-destruct;
4, in self-destruction process, plunger tangent plane salient point can be utilized needle guard part oblique top, thus the probability that reduction needle tubing exposes, improve its security performance further;
5, by spring force inertia, spring housing upper end and piston rod upper end inwall are fastened, decrease because spring housing gets loose the probability making needle guard part drop;
6, its convenient, performance safety easy to use is reliable, is conducive to widely using.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model automatic retracting type self-destroyed syringe;
Fig. 2 is the zoomed-in view at A place in Fig. 1;
Fig. 3 is the schematic diagram that this utility model automatic retracting type self-destroyed syringe is in injection zero-bit state;
Fig. 4 is the schematic diagram that this utility model automatic retracting type self-destroyed syringe is in self-destruction state;
Fig. 5 is the front schematic view of this utility model automatic retracting type self-destroyed syringe needle guard part;
Fig. 6 is the side schematic view of this utility model automatic retracting type self-destroyed syringe needle guard part.
Wherein, 1, needle stand; 11, sealing ring; 12, groove; 2, needle guard part; 21, draw-in groove; 22, salient point; 23, card-bit part; 24, dead slot is dodged; 3, needle tubing; 4, injection tube; 41, the first oblique cut; 42, socket part; 43, salient point is locked; 5, piston rod; 51, stop contact; 52, the second inclined plane; 53, the 3rd inclined plane; 54, internal ring edge; 6, spring housing; 61, the first inclined plane; 62, grab; 63, rubber blanket; 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, this utility model automatic retracting type self-destroyed syringe is described further, so that more clearly understand this utility model technical thought required for protection.
See Fig. 1 and shown in composition graphs 3, be this utility model automatic retracting type self-destroyed syringe, comprise needle stand 1, the needle guard part 2 be arranged on needle stand 1, the needle tubing 3 be fixed 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, the syringe of differing needles number just can be obtained.This automatic retracting type self-destroyed syringe also comprise with the injection tube 4 that needle stand 1 connects, to be inserted in injection tube 4 cavity and can along the piston rod 5 of the central axis direction movement of injection tube 4, be arranged in piston rod 5 under shed and can opposing pistons bar 5 move upward plug assembly, to be arranged on plug assembly and can the spring housing 6 that moves upward of relative plug assembly and 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 Compress Spring 7 be in the stop contact 51 of compressive state; Described needle guard part 2 is provided with the passage be communicated with between injection tube 4 cavity and needle tubing 3 pipeline; This plug assembly is provided with the perforation interted for spring housing 6 lower end, and the interior diapire of the bottom surface of plug assembly and injection tube 4 cavity matches.During use, to be injectedly to complete, the grab 62 of spring housing 6 is interlocked with the draw-in groove 21 of needle guard part 2.After needle tubing 3 is extracted human body, by continuing to promote piston rod 5, needle guard part 2 and needle tubing 3 can be made to move upward under the drive of spring housing 6, the first oblique cut 41 that the inwall that needle guard part 2 departs from injection tube 4 plug-in opening upper end is provided with, move upward under the drive of spring housing, thus reach the effect of safety self-destruct.
See Fig. 1 and shown in composition graphs 2, described injection tube 4 lower end is provided with socket part 42 and matches with needle stand 1 upper end, socket part 42 inwall has screw thread and is provided with and coordinates with the locking salient point 43 of being locked in needle stand 1 and socket part 42 with needle stand 1; When needle stand 1 is installed, needle stand 1 upper end is coordinated with the inner thread of socket part, injection tube 4 lower end 42 by rotating needle stand 1 and passes through to lock salient point 43 locking positioning needle stand 1, avoiding needle stand 1 and injection tube 4 to depart from.
See Fig. 3 and shown in composition graphs 5, Fig. 6, the upper end of described needle guard part 2 is provided with the draw-in groove 21 matched with the grab 62 of spring housing 6.Below the draw-in groove 21 of needle guard part 2, be provided with card-bit part 23, this two card-bit part 23 is symmetrically distributed in the both sides of injection tube 4 central axis, the rod-like structure of card-bit part 23 in pars intermedia outwardly convex, and between two card-bit parts 23, dead slot 24 is dodged in formation one.When promoting piston rod 5 to injection zero-bit, the grab 62 of spring housing 6 is buckled on draw-in groove 21 swimmingly.Needle guard part 2 is fixed with injection tube 4 owing to using card-bit part 23, and dodges dead slot 24 for hollow out between card-bit part 23, and card-bit part 23 more easily deformation occurs.Promote piston rod 5 gently, needle guard part 2 more easily can depart from injection tube 4 plug-in opening and enter into injection tube 4 inside, thus reaches the object of safety self-destruct.
See Fig. 1 and shown in composition graphs 3, described needle guard part 2 lower end has along the axisymmetric salient point 22 in injection tube 4 center; Needle stand 1 lower end inner wall fluted 12, can with the salient point 22 phase clamping of needle guard part 2 lower end.
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.When 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 extended outwardly, and the bottom surface of this extension and the end face of plug assembly match.By adopting said structure, the relative plug assembly of spring housing 6 can be made to move 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 54, and the end face of this internal ring along 54 and outer shroud match along the bottom surface of 91.By adopting said structure, plug assembly opposing pistons bar 5 can be made to move upward.
Described spring housing 6 is in revolving body, and the outer peripheral edge of its upper end is provided with the first inclined plane 61, and from the lower end of the first inclined plane 61 to upper end, the distance of the point in this first inclined plane 61 and injection tube 4 central shaft reduces gradually; Piston rod 5 stop contact 51 is provided with second inclined plane 52 of mating with the first inclined plane 61.In self-destruction process, by adopting the design of the first inclined plane 61 and the second inclined plane 52, spring housing 6 can be made to depart from stop contact 51 swimmingly, prevent stuck situation.The inwall of piston rod 5 upper end is also provided with the 3rd inclined plane 53 matched 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 of the 3rd inclined plane 53, can effectively cushion its impulsive force, utilizing the elastic force inertia of Compress Spring 7 resilience, promote spring housing 6 to fasten with piston rod 5 inwall, prevent needle guard part 2 from exposing injection tube 4.
Described spring housing 6 upper end, the position that contacts with Compress Spring 7 is provided with rubber blanket 63.In the process of Compress Spring 7 resilience, play to cushion and lower spring vibration and reduce Compress Spring 7 and collide with spring housing 6 noise produced.
Also be fixed with plunger 64 in this spring housing 6, the plunger tangent plane under the bottom surface place of keeping to the side of this plunger 64 is provided with and is tilted to, this plunger tangent plane is provided with can by the salient point 65 of needle guard part 2 oblique top.When moving up to precalculated position under the elastic force effect of spring housing 6 at Compress Spring 7 and being 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 top, thus the probability that reduction needle tubing 3 exposes.
The lower end of described injection tube 4 is provided with the plug-in opening with cavity connects; The upper end of described needle guard part 2 is interted in plug-in opening, and with the upper end interference fit of plug-in opening; The inwall of plug-in opening upper end is provided with the first oblique cut 41 and matches with the card-bit part 23 of needle guard part 2 outer peripheral edge.By adopting said structure, can booster injection external member 2 and the connection of injection tube 4, prevent the situation occurring needle guard part 2 movement in injection process.Preferably, the position that needle stand 1 connects with injection tube 4 is provided with sealing ring 11, to play excellent sealing and increasing friction force effect.
During use, downwards promote piston rod 5, 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, thus complete injection, because this syringe is by rationally arranging, can guarantee that its residual quantity is low.After needle tubing 3 extracts human body, as shown in Figure 4, continue downwards to promote piston rod 5, under the effect of upwards holding power that now spring housing 6 applies at plug assembly, disengaging 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, thus reaches the effect of safety self-destruct.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of this utility model claim.
Claims (9)
1. an automatic retracting type self-destroyed syringe, comprises needle stand, the needle guard part be arranged on needle stand, the injection tube that is fixed on the needle tubing on needle guard part and is connected with needle stand; Have in described injection tube cavity and along the piston rod of the central axis direction movement of injection tube and can be arranged in piston rod under shed and can the plug assembly that moves upward of opposing pistons bar, it is characterized in that: described injection tube lower end outer setting has socket part, needle stand upper end is placed in socket part and with the inner thread of socket part and coordinates, and the inwall of socket part is provided with and coordinates with the locking salient point of needle stand and socket part being locked with needle stand; Described needle guard part is arranged on needle stand, the upper end of needle guard part is provided with draw-in groove, needle guard part is positioned at below draw-in groove and is provided with two card-bit parts, two card-bit parts are symmetrically distributed in the both sides of injection tube central axis, two card-bit parts are the rod-like structure of pars intermedia outwardly convex, and between two card-bit parts, dead slot is dodged in formation one; Described plug assembly has can the spring housing that moves upward of plug assembly relatively; Described spring housing upper end is fixed with the rubber blanket that top is pressed on Compress Spring upper end, and spring housing lower end is provided with the grab with needle guard part upper end pocket matches; The lower end of described Compress Spring is resisted against on plug assembly; The inwall of described piston rod is provided with to push up and is pressed on spring housing and makes Compress Spring be in the stop contact of compressive state.
2. automatic retracting type self-destroyed syringe as claimed in claim 1, is characterized in that: the position of described needle stand and injection tube interior thereof is provided with sealing ring.
3. automatic retracting type self-destroyed syringe as claimed in claim 1, is characterized in that: described needle stand lower end inner wall is fluted, can with the salient point phase clamping of needle guard part lower end.
4. 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 edge of its upper end is provided with the first inclined plane, from the lower end of the first inclined plane to upper end, the point in this first inclined plane and the distance of injection tube central shaft reduce gradually.
5. automatic retracting type self-destroyed syringe as claimed in claim 4, is characterized in that: described stop contact is provided with the second inclined plane matched with spring housing first inclined plane.
6. automatic retracting type self-destroyed syringe as claimed in claim 4, is characterized in that: the inwall of described piston rod upper end is provided with the 3rd inclined plane matched with spring housing first inclined plane.
7. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: described spring housing is provided with the extension extended outwardly, the bottom surface of this extension and the end face of plug assembly match.
8. automatic retracting type self-destroyed syringe as claimed in claim 1, it is characterized in that: in described spring housing, be also fixed with plunger, plunger tangent plane under the bottom surface place of keeping to the side of this plunger is provided with and is tilted to, this plunger tangent plane is provided with can by the salient point of needle guard part oblique top.
9. 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 with cavity connects; The upper end of described needle guard part is interted in plug-in opening, and with the upper end interference fit of plug-in opening; The first oblique cut on two card-bit part outwardly convex parts of described needle guard part outer peripheral edge and the inwall of plug-in opening upper end matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503852.2U CN204951829U (en) | 2015-07-13 | 2015-07-13 | Automatic retracting type self -destruction injecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503852.2U CN204951829U (en) | 2015-07-13 | 2015-07-13 | Automatic retracting type self -destruction injecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204951829U true CN204951829U (en) | 2016-01-13 |
Family
ID=55046933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520503852.2U Expired - Fee Related CN204951829U (en) | 2015-07-13 | 2015-07-13 | Automatic retracting type self -destruction injecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204951829U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823075A (en) * | 2017-01-20 | 2017-06-13 | 黄旭荣 | A kind of combined type safe self-breaking syringe |
| CN106860974A (en) * | 2017-04-14 | 2017-06-20 | 黄旭荣 | Segmented safety self-destroyed syringe |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
| GB2590515A (en) * | 2019-12-16 | 2021-06-30 | Guangdong Hongshan Medical Device Tech Co Ltd | Novel composite safety self-destructing syringe |
-
2015
- 2015-07-13 CN CN201520503852.2U patent/CN204951829U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823075A (en) * | 2017-01-20 | 2017-06-13 | 黄旭荣 | A kind of combined type safe self-breaking syringe |
| WO2018133812A1 (en) * | 2017-01-20 | 2018-07-26 | 黄旭荣 | Composite safe auto-disable syringe |
| CN106823075B (en) * | 2017-01-20 | 2019-02-26 | 广东泓山医疗器械科技有限公司 | A kind of combined type safe self-breaking syringe |
| CN106860974A (en) * | 2017-04-14 | 2017-06-20 | 黄旭荣 | Segmented safety self-destroyed syringe |
| CN106860974B (en) * | 2017-04-14 | 2019-01-25 | 黄旭荣 | Segmented safety self-destroyed syringe |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
| GB2590515A (en) * | 2019-12-16 | 2021-06-30 | Guangdong Hongshan Medical Device Tech Co Ltd | Novel composite safety self-destructing syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 |