CN215900585U - Syringe capable of preventing secondary puncture - Google Patents
Syringe capable of preventing secondary puncture Download PDFInfo
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- CN215900585U CN215900585U CN202120058211.6U CN202120058211U CN215900585U CN 215900585 U CN215900585 U CN 215900585U CN 202120058211 U CN202120058211 U CN 202120058211U CN 215900585 U CN215900585 U CN 215900585U
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- barrel
- push rod
- rubber
- end part
- far away
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Abstract
The utility model discloses an injector for preventing secondary puncture, which comprises an injector barrel, wherein a push rod is arranged in the barrel in a sliding manner, an injection needle is fixedly arranged at the end part of the barrel, which is far away from the push rod, the injection needle is positioned at the central position of the barrel, which is far away from the end part of the push rod, and an extensible structure for preventing the injector from being punctured for the second time after the injector is used is arranged at the edge of the barrel, which is far away from the end part of the push rod. The extensible structure is arranged at the end part of the syringe barrel, so that the extensible structure can be pushed to extend after use to block the needle head of the injection needle to avoid secondary injury.
Description
Technical Field
The utility model relates to a syringe capable of preventing secondary puncture.
Background
Syringes are a common medical device. As early as the 15 th century, kathler, italian, proposed the principle of the syringe. Gas or liquid is primarily drawn or injected with a needle. Syringes may also be used for injection through rubber septa in medical devices, containers, scientific instruments such as in some chromatography. At present, in order to protect the syringe from stabbing and injuring people by mistake before use, a bulge or a groove is generally arranged on a needle base, then a sheath is arranged to seal the needle tube in the sheath to play a role in protection, the inner wall of the sheath is provided with the groove or the bulge matched with the bulge or the groove, however, if the sheath is returned after use, people can be stabbed by carelessness in the process of installation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a syringe capable of preventing secondary puncture, wherein the extensible structure is arranged at the end part of the syringe barrel, so that the extensible structure can be pushed after use to extend to block the needle head of the injection needle after use so as to prevent secondary puncture.
In order to achieve the purpose, the technical scheme of the utility model is to design a syringe capable of preventing secondary puncture, which comprises a syringe barrel, wherein a push rod is arranged in the barrel in a sliding manner, the end part of the barrel, far away from the push rod, is fixedly provided with a syringe needle, the syringe needle is positioned at the central position of the barrel, far away from the end part of the push rod, and the edge of the barrel, far away from the end part of the push rod, is provided with an extensible structure for preventing the syringe from secondary puncture after being used.
The further technical scheme is that the extensible structure comprises a rubber sliding pushing piece fixedly connected to the edge of the barrel far away from the end part of the push rod, the rubber sliding pushing piece comprises a rubber folded plate at the bottom and a sliding barrel integrally arranged with the rubber folded plate, the sliding barrel is slidably sleeved on the injection needle, and the bottom end of the rubber folded plate is fixedly connected to the edge of the barrel far away from the end part of the push rod. Due to the arrangement of the rubber folding plate, the rubber folding plate is in a folded state before the injection is finished, so that the sliding barrel is far away from the needle head of the injection needle for facilitating the injection, and after the injection is finished, the rubber folding plate is pushed to enable the rubber folding plate to be stretched to be almost in a straight plate shape (a straight plate which is almost parallel to the injection needle), and secondary pricking is prevented after the injection is finished.
The further technical proposal is that a rubber film is fixedly arranged in the sliding cylinder, and the center of the rubber film is provided with a through hole matched with the injection needle; the end part of the push rod in the cylinder body is fixedly connected with a rubber piston. Because the rubber film is arranged in the sliding barrel, certain resistance is generated when the rubber folded plate is pushed, so that the rubber folded plate can be kept in a folded state before injection, and the rubber folded plate is prevented from being easily stretched to influence the injection work.
The further technical proposal is that the distance from the needle head of the injection needle to the end part of the barrel body far away from the push rod is consistent with the length of the rubber folded plate after being stretched. Or the distance from the needle head of the injection needle to the end part of the barrel body far away from the push rod is slightly less than the length of the rubber folded plate after being stretched, so that the needle head of the injection needle can be covered to prevent secondary puncture after injection.
Another kind of technical scheme does, but extendible structure is including connecting the barrel on its edge of keeping away from the push rod tip, and its tip that is close to the syringe needle of bellows is fixed to be set up the rubber membrane, and the rubber membrane center is equipped with the through-hole with the syringe needle adaptation. The extension structure can avoid the scheme of rubber folded plates from occupying more storage space, and more injectors can be transported under the condition of the same loader, so that the cost is saved.
The further technical scheme is that one surface of the rubber membrane close to the push rod is fixedly connected with a push rod, and the push rod penetrates through the cylinder body and is far away from the end part of the push rod; one end of the corrugated pipe close to the end part of the cylinder body is connected with the end part of the cylinder body far away from the push rod through a connecting hose which can be twisted. After injection, the corrugated pipe is pushed upwards and then twisted slightly, so that the ejector rod is separated from the through hole in the end part of the barrel body (the end part of the barrel body is provided with the through hole for the ejector rod to pass through, and the length of the ejector rod meets the requirement that the lower end of the ejector rod is separated from the through hole in the end part of the barrel body when the corrugated pipe extends to the longest), and the ejector rod is ejected to the upper surface of the end part of the barrel body to prevent the corrugated pipe from contracting due to dead weight or external force to further leak the needle head of the injection needle.
The utility model has the advantages and beneficial effects that: the extensible structure is arranged at the end part of the syringe barrel, so that the extensible structure can be pushed to extend after use to block the needle head of the injection needle to avoid secondary injury. Due to the arrangement of the rubber folding plate, the rubber folding plate is in a folded state before the injection is finished, so that the sliding barrel is far away from the needle head of the injection needle for facilitating the injection, and after the injection is finished, the rubber folding plate is pushed to enable the rubber folding plate to be stretched to be almost in a straight plate shape (a straight plate which is almost parallel to the injection needle), and secondary pricking is prevented after the injection is finished. Because the rubber film is arranged in the sliding barrel, certain resistance is generated when the rubber folded plate is pushed, so that the rubber folded plate can be kept in a folded state before injection, and the rubber folded plate is prevented from being easily stretched to influence the injection work. After the injection, the needle head of the injection needle can be covered to prevent secondary puncture. The scheme of rubber folded plates can be prevented from occupying more storage space, more injectors can be transported under the condition of the same loader, and cost is saved.
Drawings
FIG. 1 is a schematic view of a first embodiment of the syringe for preventing secondary puncture according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic view of the bellows of FIG. 2 after being twisted after being pushed to the uppermost end;
fig. 4 is a top view of fig. 3 with the bellows, rubber membrane and connecting hose removed.
In the figure: 1. a barrel; 2. a push rod; 3. an injection needle; 4. rubber folded plates; 5. a slide cylinder; 6. a rubber film; 7. a rubber piston; 8. a bellows; 9. a top rod; 10. a hose is connected.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in figure 1, the utility model relates to a syringe for preventing secondary puncture, which comprises a syringe barrel 1, wherein a push rod 2 is arranged in the barrel 1 in a sliding way, an injection needle 3 is fixedly arranged at the end part of the barrel 1 far away from the push rod 2, the injection needle 3 is positioned at the central position of the barrel 1 far away from the end part of the push rod 2, and an extensible structure for preventing the syringe from puncturing a person for the second time after the syringe is used is arranged at the edge of the barrel 1 far away from the end part of the push rod 2. Extensible structure includes that fixed connection slides at the rubber on barrel 1 its edge of keeping away from 2 tip of push rod, and the rubber slides and pushes away the piece and includes rubber folded plate 4 of bottom and the smooth section of thick bamboo 5 of 4 integrative settings with rubber folded plate, and smooth section of thick bamboo 5 slip cover is established on syringe needle 3, and the bottom fixed connection of rubber folded plate 4 is on barrel 1 its edge of keeping away from 2 tip of push rod. A rubber membrane 6 is fixedly arranged in the sliding barrel 5, and a through hole matched with the injection needle 3 is formed in the center of the rubber membrane 6; the end part of the push rod 2 positioned in the cylinder 1 is fixedly connected with a rubber piston 7. The distance from the needle head of the injection needle 3 to the end part of the barrel 1 far away from the push rod 2 is consistent with the length of the rubber folded plate 4 after being stretched.
Example two:
the difference from the first embodiment is that, as shown in fig. 2 to 4, the extensible structure comprises a bellows 8 connected to the edge of the barrel 1 at the end far from the push rod 2, a rubber membrane 6 is fixedly arranged at the end of the bellows 8 close to the needle of the injection needle 3, and a through hole matched with the injection needle 3 is formed in the center of the rubber membrane 6. One surface of the rubber membrane 6 close to the push rod 2 is fixedly connected with a push rod 9, and the push rod 9 penetrates through the cylinder body 1 and is far away from the end part of the push rod 2; the end of the bellows 8 close to the end of the barrel 1 is connected to the end of the barrel 1 remote from the plunger 2 by a twistable connecting hose 10.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The syringe capable of preventing secondary puncture is characterized by comprising a syringe barrel, wherein a push rod is arranged in the barrel in a sliding manner, an injection needle is fixedly arranged at the end part of the barrel, which is far away from the push rod, and is positioned at the central position of the barrel, which is far away from the end part of the push rod, and an extensible structure for preventing the syringe from puncturing a person for the second time after the syringe is used is arranged at the edge of the barrel, which is far away from the end part of the push rod;
the extensible structure comprises a rubber sliding and pushing piece fixedly connected to the edge of the end part, far away from the push rod, of the barrel body, the rubber sliding and pushing piece comprises a rubber folded plate at the bottom and a sliding barrel integrally arranged with the rubber folded plate, the sliding barrel is sleeved on the injection needle in a sliding mode, and the bottom end of the rubber folded plate is fixedly connected to the edge of the end part, far away from the push rod, of the barrel body;
the extensible structure comprises a bellows connected to the edge of the barrel far away from the end of the push rod, a rubber film is fixedly arranged at the end of the bellows close to the needle head of the injection needle, and a through hole matched with the injection needle is formed in the center of the rubber film.
2. The syringe for preventing the secondary puncture according to claim 1, wherein a rubber membrane is fixedly arranged in the sliding barrel, and a through hole matched with the injection needle is arranged in the center of the rubber membrane; the end part of the push rod in the cylinder body is fixedly connected with a rubber piston.
3. The syringe of claim 2 wherein the distance from the needle to the end of the barrel remote from the plunger is the same as the extended length of the rubber flap.
4. The syringe for preventing the secondary puncture according to claim 1, wherein the surface of the rubber membrane close to the push rod is fixedly connected with a push rod, and the push rod penetrates through the end part of the cylinder body far away from the push rod; one end of the corrugated pipe close to the end part of the cylinder body is connected with the end part of the cylinder body far away from the push rod through a connecting hose which can be twisted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120058211.6U CN215900585U (en) | 2021-01-11 | 2021-01-11 | Syringe capable of preventing secondary puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120058211.6U CN215900585U (en) | 2021-01-11 | 2021-01-11 | Syringe capable of preventing secondary puncture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215900585U true CN215900585U (en) | 2022-02-25 |
Family
ID=80285591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120058211.6U Active CN215900585U (en) | 2021-01-11 | 2021-01-11 | Syringe capable of preventing secondary puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215900585U (en) |
-
2021
- 2021-01-11 CN CN202120058211.6U patent/CN215900585U/en active Active
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