CN211383194U - Disposable self-destruction safety syringe - Google Patents
Disposable self-destruction safety syringe Download PDFInfo
- Publication number
- CN211383194U CN211383194U CN201922001010.8U CN201922001010U CN211383194U CN 211383194 U CN211383194 U CN 211383194U CN 201922001010 U CN201922001010 U CN 201922001010U CN 211383194 U CN211383194 U CN 211383194U
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- needle
- needle interface
- interface
- elastic hook
- spring
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Abstract
The utility model provides a disposable self-destruction safety syringe relates to the medical instrument field, include: a syringe having a fixed cap disposed at a front portion thereof, the fixed cap accommodating a movable needle hub to which an injection needle is connected; the spring is compressed between the fixing cap and the needle interface, and a first groove positioned on the needle interface is meshed with a clamping tongue arranged on the inner wall of the front end of the needle cylinder to offset the tension of the spring so as to keep the needle interface in place; at least one elastic hook is arranged on the inner wall of the hollow plunger, and the needle interface is provided with a first flange, and after the needle interface is pushed through the elastic hook, the needle interface is locked with the elastic hook by the first flange in the moving direction of the fixing cap. The utility model discloses can be in accomplishing self-destruction after once injecting to still can prevent effectively that the syringe needle from following the locking cap roll-off once more, cause accidental injury and cross infection.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the field of medical equipment, in particular to a disposable self-destruction safety syringe.
[ background of the invention ]
To avoid cross-infection when introducing or removing media from humans or animals, hypodermic syringes must be disposable and disposed of as waste after use. The most used disposable syringes at present consist of a hollow barrel, a needle and a fixed-length piston fitted in the barrel. The biggest problem of the syringe is that the needle is still outside after the injection is finished, which not only causes inconvenience for carrying and destroying the garbage of the syringe, but also may injure medical care personnel carelessly to cause secondary cross infection of germs, which becomes a medical hidden trouble which cannot be ignored, and in addition, the possibility of secondary use still exists, so that a disposable syringe which can retract the needle into a syringe barrel after use is needed.
[ Utility model ] content
The utility model provides a disposable self-destruction safety syringe, which is used for preventing the syringe from causing secondary cross infection.
The utility model discloses a disposable self-destruction safety syringe, include: a barrel having a fixed cap disposed at a front portion thereof, the fixed cap housing a movable needle hub to which an injection needle is connected; a spring is compressed between the retaining cap and the needle hub, the tension of the spring tending to push the needle hub into the barrel; before use, the first groove on the needle interface is engaged with the latch arranged on the inner wall of the front end of the needle cylinder to offset the tension of the spring, so that the needle interface is kept in place; one end of the latch is provided with an inclined surface which is inclined away from the needle interface, and the front end of the syringe is internally provided with a trigger mechanism which can move in a limited range, the front end of the trigger mechanism is an inclined surface and is tightly attached to the inclined surface at the end of the latch, when the plunger is moved along the injection direction, the trigger mechanism is pushed, so that the latch is away from the needle interface, the state that the needle interface is kept in place is released, the needle interface is released, and the spring can push the needle interface into the hollow plunger; the inner wall of the hollow plunger is provided with at least one elastic hook, the end part of the elastic hook, which is directed to one end of the fixing cap, is provided with an inclined surface which is inclined away from the needle interface, so that the spring can push the needle interface to pass through the elastic hook, and the needle interface is provided with a first flange, after the needle interface is pushed through the elastic hook, the direction of the needle interface moving to the fixing cap is locked by the first flange and the elastic hook, so that the tip end of the injection needle can not move out of the fixing cap any more.
The mechanism structure for limiting the movement of the trigger mechanism in the range is characterized in that the inner wall of the syringe is provided with a second groove, and the tail part of the trigger mechanism is provided with a second flange which is limited to move in the height of the second groove.
The inner contour of the first groove is square or rectangular, and the contour of the clamping tongue is complementary to the inner contour of the first groove. Or the inner contour of the first groove is square or rectangular, and the contact surface of the clamping tongue and the first groove is a plane.
The utility model discloses a disposable self-destruction safety syringe can be self-destruction after accomplishing an injection to still can effectively prevent that the syringe needle from following the locking cap roll-off once more, causing accidental injury and cross infection.
[ description of the drawings ]
FIG. 1 is a schematic view of the general structure of a disposable self-destruction safety syringe according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the upper structure of the disposable self-destruction safety syringe according to the embodiment of the present invention;
FIG. 3 is an enlarged view of the lower structure of the disposable self-destruction safety syringe according to the embodiment of the present invention;
FIG. 4 is a schematic view of the lower part of the plunger of the disposable self-destruction safety syringe according to the embodiment of the present invention;
FIG. 5 is a schematic view of the disposable self-destructive safety syringe according to the embodiment of the present invention, wherein the needle hub is pushed past the first flange;
FIG. 6 is a schematic view of the disposable self-destructive safety syringe according to the embodiment of the present invention, wherein the needle hub is locked after being pushed past the first flange;
fig. 7 is a partially enlarged schematic view of fig. 6.
[ detailed description ] embodiments
The disposable self-destruction safety syringe of the present embodiment, as shown in fig. 1 to 7, includes: a barrel 1 and a hollow plunger 2 movable within the barrel 1, the barrel 1 having a fixed cap 3 provided at a front portion thereof, the fixed cap 3 accommodating a movable needle hub 4, an injection needle 41 being connected to the needle hub 4. The spring 5 is compressed between the retaining cap 3 and the needle hub 4 and the tension of the spring 5 tends to push the needle hub 4 into the barrel 1.
Before use, the first groove 42 on the needle hub 4 engages with the latch 11 provided on the inner wall of the front end of the needle cylinder 1, counteracting the tension of the spring 5, and keeping the needle hub 4 in place. The inner contour of the first groove 42 is square or rectangular, the contact surface of the latch 11 and the first groove 42 is flat, or the inner contour of the first groove 42 is square or rectangular, the contour of the latch 11 is complementary to the inner contour of the first groove 42, or other structures such as a hook claw are used for keeping in place. One end of the latch 11 has an inclined surface 111 inclined away from the needle hub 4, and a trigger 12 movable within a limited range is provided inside the front end of the syringe 1, specifically, a second groove 13 is provided on the inner wall of the syringe 1, and a second flange 121 is provided at the rear of the trigger 12, and the second flange 121 is limited to move within the height of the second groove 13. The front end of the trigger mechanism 12 is an inclined surface 122, which is tightly attached to the inclined surface 111 at the end of the latch 11, when injecting, the plunger 2 is moved along the injecting direction to be combined with the trigger mechanism 12, and then the plunger 2 is further pushed forward, so that the trigger mechanism 12 is pushed, under the action of the inclined surface 122 and the inclined surface 111, the latch 11 is far away from the needle hub 4, the state of the needle hub 4 being kept in place is released, the needle hub 4 is released, and the spring 5 can push the needle hub 4 into the hollow plunger 2. So far, the injector of the embodiment is self-destructed, and secondary injection can not be carried out.
Although the syringe is self-destructed, in order to prevent the needle hub 4 and the injection needle 41 from sliding out of the fixing cap 3 again when the used syringe is turned upside down, causing accidental injury and cross infection, in the embodiment, at least one elastic hook 21 is arranged on the inner wall of the hollow plunger 2, the end of the elastic hook 21 pointing to one end of the fixing cap 3 is provided with an inclined surface 211 which is inclined away from the needle hub 4, so that the spring 5 can push the needle hub 4 through the elastic hook 21, and the needle hub 4 is also provided with a first flange 42, after the needle hub 4 is pushed through the elastic hook 21, the needle hub 4 is locked by the first flange 42 and the elastic hook 21 in the moving direction of the fixing cap 3 because the weight of the needle hub 4 and the injection needle 41 is light, so that the tip of the injection needle 41 can not move out of the fixing cap 3 any.
In addition, a stopper or a fragile part can be arranged at the fluid combination end of the plunger 2, so that the internal pressure of the fluid can be counteracted in the injection process, the fluid is injected into the subcutaneous part, and the fluid is pushed into the hollow plunger together with the needle interface and the injection needle when the needle interface is released after the fluid injection is finished.
The description and use of the invention herein are illustrative and exemplary only, and are not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are fully possible, and alternative and equivalent various components of the embodiments are well known to those skilled in the art. It will also be apparent to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, and that other modifications and variations, without departing from the spirit or essential characteristics thereof, may be made to the embodiments disclosed herein.
Claims (4)
1. A disposable self-destructing safety syringe comprising: a barrel having a fixed cap disposed at a front portion thereof, the fixed cap housing a movable needle hub to which an injection needle is connected;
a spring is compressed between the retaining cap and the needle hub, the tension of the spring tending to push the needle hub into the barrel; before use, the first groove on the needle interface is engaged with the latch arranged on the inner wall of the front end of the needle cylinder to offset the tension of the spring, so that the needle interface is kept in place;
one end of the latch is provided with an inclined surface which is inclined away from the needle interface, and the front end of the syringe is internally provided with a trigger mechanism which can move in a limited range, the front end of the trigger mechanism is an inclined surface and is tightly attached to the inclined surface at the end of the latch, when the plunger is moved along the injection direction, the trigger mechanism is pushed, so that the latch is away from the needle interface, the state that the needle interface is kept in place is released, the needle interface is released, and the spring can push the needle interface into the hollow plunger;
the inner wall of the hollow plunger is provided with at least one elastic hook, the end part of the elastic hook, which is directed to one end of the fixing cap, is provided with an inclined surface which is inclined away from the needle interface, so that the spring can push the needle interface to pass through the elastic hook, and the needle interface is provided with a first flange, after the needle interface is pushed through the elastic hook, the direction of the needle interface moving to the fixing cap is locked by the first flange and the elastic hook, so that the tip end of the injection needle can not move out of the fixing cap any more.
2. The single use self-destruction safety syringe as recited in claim 1, wherein the mechanism limiting the movement of the trigger mechanism within the range is embodied in such a way that the inner wall of the barrel has a second groove and the trigger mechanism tail has a second flange, the second flange being limited to move within the height of the second groove.
3. The disposable self-destroying safety syringe according to claim 1, wherein an inner contour of said first recess is square or rectangular, and a contour of said locking tongue is complementary to an inner contour of said first recess.
4. The disposable self-destruction safety syringe as recited in claim 1, wherein the inner contour of the first groove is square or rectangular, and the contact surface of the latch and the first groove is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922001010.8U CN211383194U (en) | 2019-11-19 | 2019-11-19 | Disposable self-destruction safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922001010.8U CN211383194U (en) | 2019-11-19 | 2019-11-19 | Disposable self-destruction safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211383194U true CN211383194U (en) | 2020-09-01 |
Family
ID=72218336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922001010.8U Active CN211383194U (en) | 2019-11-19 | 2019-11-19 | Disposable self-destruction safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211383194U (en) |
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2019
- 2019-11-19 CN CN201922001010.8U patent/CN211383194U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201013 Address after: 430200 401-312, 4th floor, office building, No. 777, Guanggu Third Road, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: Wuhan wandekang Medical Equipment Co., Ltd Address before: 9-5, District 1, Gaobeidian new village, Chaoyang District, Beijing 100124 Patentee before: BEIJING WANDEKANG MEDICAL INSTRUMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211103 Address after: 100124 9-5, zone 1, Gaobeidian new village, Chaoyang District, Beijing Patentee after: BEIJING WANDEKANG MEDICAL INSTRUMENT Co.,Ltd. Address before: 430200 401-312, 4th floor, office building a, No. 777, Guanggu Third Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee before: Wuhan wandekang Medical Equipment Co., Ltd |
|
| TR01 | Transfer of patent right |