CN216394894U - Syringe with sliding needle - Google Patents
Syringe with sliding needle Download PDFInfo
- Publication number
- CN216394894U CN216394894U CN202122928551.2U CN202122928551U CN216394894U CN 216394894 U CN216394894 U CN 216394894U CN 202122928551 U CN202122928551 U CN 202122928551U CN 216394894 U CN216394894 U CN 216394894U
- Authority
- CN
- China
- Prior art keywords
- needle
- base
- needle head
- cavity
- tube
- Prior art date
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 208000012266 Needlestick injury Diseases 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application provides a sliding needle injector, wherein a needle base sliding tube is fixedly formed on the upper side of a barrel, and a needle base can be slidably arranged in the needle base sliding tube; a handle is fixedly formed on the upper side of the needle head base; a cavity is formed in the needle head base, and the second end of the needle head is communicated with the cavity; a channel is formed at the first end of the connecting part of the barrel and the needle base sliding pipe, an annular rubber pipe is installed in the channel, when the channel is aligned with the opening of the cavity of the needle base, the first end of the annular rubber pipe is abutted against the needle base to form sealing, and the needle, the cavity, the annular rubber pipe and the barrel are communicated. According to the sliding needle injector, the needle base sliding tube is arranged, so that the connection between the needle and the barrel body is completed through the sliding needle base; after the injector is used, the needle head base is slid to shrink the needle head into the needle head base sliding tube, so that the occurrence of sharp injury and contact infection can be avoided.
Description
Technical Field
The present disclosure relates to syringes, and particularly to a syringe with a slidable needle.
Background
After blood or liquid is drawn by a syringe clinically, a needle head needs to be sleeved back with a needle cap, so that the purpose of preventing the needle from being injured by a needle due to the exposure of the tip is avoided, and the purpose of preventing medical workers from being infected with diseases due to the contact of the medical workers and patients through blood, body fluid, non-intact skin and mucous membrane is avoided. With this action repeated often, needle recapping slowly becomes a subconscious act for the medical practitioner. The subconscious needle back-capping often causes sharp injury.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present application aims to provide a sliding needle syringe, the needle of which can be retracted in a sliding manner by manipulating the rear end thereof, effectively preventing needle stick injuries and contact infections.
The sliding needle syringe of the present application, comprising: a cylinder, a piston, a push rod and a needle head; the first end of the cylinder body is closed, and the second end of the cylinder body is open; the piston is slidably mounted in the cylinder; the push rod is fixed on the piston and extends to the outside from the second end opening of the cylinder body;
a needle base sliding tube is fixedly formed on the upper side of the cylinder body; the tube wall of the needle head base sliding tube is provided with a long notch; the first end of the needle head base sliding tube is closed by an end plate, and a through hole is formed in the end plate; the needle head base can be slidably arranged in the needle head base sliding tube, and the lower surface of the needle head base is tightly attached to the inner surface of the needle head base sliding tube; the second end of the needle head is fixed at the first end of the needle head base; the first end of the needle head is opposite to the through hole; a handle is fixedly formed on the upper side of the needle head base; a handle extending from the incision to the exterior; a cavity is formed in the needle head base, and the second end of the needle head is communicated with the cavity; an opening is formed on one side of the cavity facing the cylinder;
a channel is formed at the first end of the connecting part of the cylinder body and the needle base sliding tube, the first end of the channel is formed on the needle base sliding tube, and the second end of the channel is formed on the cylinder body, so that the inside of the cylinder body is communicated with the inside of the needle base sliding tube; an annular rubber tube is arranged in the channel, the second end of the annular rubber tube is flush with the inner wall of the barrel, and the first end of the annular rubber tube protrudes out of the inner surface of the needle head base sliding tube;
when the channel is aligned with the opening of the cavity of the needle base, the first end of the annular rubber tube is abutted against the needle base to form sealing, and the needle, the cavity, the annular rubber tube and the barrel are communicated.
Preferably, the opening of the cavity of the needle base is formed as a trumpet-shaped opening; a guide inclined plane is formed at the first end of the annular rubber tube; when the annular rubber tube is aligned with the opening of the cavity of the needle base, the first end of the annular rubber tube abuts against the trumpet-shaped opening of the cavity of the needle base.
According to the sliding needle injector, the needle base sliding tube is arranged, so that the connection between the needle and the barrel body is completed through the sliding needle base; after the injector is used, the needle head base is slid to shrink the needle head into the needle head base sliding tube, so that the occurrence of sharp injury and contact infection can be avoided.
Drawings
FIG. 1 is a front view of the sliding needle syringe of the present application;
FIG. 2 is a schematic top view of the sliding needle syringe of the present application;
FIG. 3 is a schematic left side view of the sliding needle syringe of the present application;
FIG. 4 is a schematic cross-sectional view of the sliding needle syringe of FIG. 1;
FIG. 5 is a schematic view of the sliding needle syringe of FIG. 1 with the needle retracted;
fig. 6 is a schematic view, partially in section, showing the engagement of the needle mount channel of the sliding needle syringe of fig. 1 with the annular hose.
Detailed Description
The sliding needle syringe of the present application will be described in detail with reference to the accompanying drawings.
The sliding needle syringe of the present application, comprising: the device comprises a cylinder 3, a piston 2, a push rod 1 and a needle head 5; the first end of the cylinder 3 is closed, and the second end is open; the piston 2 is slidably mounted in the cylinder 3; the push rod 1 is fixed on the piston 2 and extends to the outside from the second end opening of the cylinder 3.
A needle base sliding tube 9 is fixedly formed on the upper side of the barrel 3; the tube wall of the needle head base sliding tube 9 is provided with a long notch 8; the first end of the needle base sliding tube 9 is closed by an end plate, and a through hole 91 is formed in the end plate; the needle base 6 can be arranged in the needle base sliding tube 9 in a sliding way, and the lower surface of the needle base 6 is tightly attached to the inner surface of the needle base sliding tube 9; the second end of the needle 5 is fixed at the first end of the needle base 6; the first end of the needle head 5 is opposite to the through hole 91; a handle 7 is fixedly formed on the upper side of the needle base 6; the handle 7 extends from the cutout 8 to the outside; a cavity 61 is formed in the needle base 6, and the second end of the needle 5 is communicated with the cavity 61; the cavity 61 is formed with an opening at a side facing the cylinder 3.
A first channel is formed at the connecting part of the barrel 3 and the needle base sliding tube 9, the first end of the channel is formed on the needle base sliding tube 9, and the second end of the channel is formed on the barrel 3, so that the inside of the barrel 3 is communicated with the inside of the needle base sliding tube 9; an annular rubber tube 4 is arranged in the channel, the second end of the annular rubber tube 4 is flush with the inner wall of the barrel 3, and the first end of the annular rubber tube 4 protrudes out of the inner surface of the needle base sliding tube 9. The annular hose 4 forms a through passage 41.
When the channel is aligned with the opening of the cavity 61 of the needle base 6, the first end of the annular rubber tube 4 abuts against the needle base 6 to form a seal, and the needle 5, the cavity 61, the annular rubber tube 4 and the interior of the barrel 3 are communicated.
The opening of the cavity 61 of the needle base 6 is formed into a horn-shaped opening; a first end of the annular rubber tube 4 forms a guide inclined plane; when the annular tube 4 is aligned with the opening of the cavity 61 of the needle mount 6, the first end of the annular tube 4 abuts against the flared opening of the cavity 61 of the needle mount 6. The first end of the annular rubber tube 4 abuts against the opening of the cavity 61 of the needle base 6, forming a seal on the one hand and facilitating the maintenance of the position of the needle base 6 on the other hand.
In use, in the ready-to-use state, the needle is retracted within the needle mount slide, as shown in figure 5. When the syringe is used, the handle is pushed, so that the needle base slides towards the first end of the needle base sliding tube until the opening of the cavity of the needle base is aligned with the annular rubber tube, as shown in figure 4, the needle is communicated with the barrel at the moment, and the operation of sucking or pushing out liquid can be carried out. After the needle is used, the operating handle slides the needle base towards the second end of the needle base sliding tube, the needle base is separated from the annular rubber tube and slides to the second end of the needle base sliding tube, and the needle is completely retracted in the needle base sliding tube.
Claims (2)
1. A sliding needle syringe, comprising: a cylinder, a piston, a push rod and a needle head; the method is characterized in that: the first end of the cylinder body is closed, and the second end of the cylinder body is open; the piston is slidably mounted in the cylinder; the push rod is fixed on the piston and extends to the outside from the second end opening of the cylinder body;
a needle base sliding tube is fixedly formed on the upper side of the cylinder body; the tube wall of the needle head base sliding tube is provided with a long notch; the first end of the needle head base sliding tube is closed by an end plate, and a through hole is formed in the end plate; the needle head base can be slidably arranged in the needle head base sliding tube, and the lower surface of the needle head base is tightly attached to the inner surface of the needle head base sliding tube; the second end of the needle head is fixed at the first end of the needle head base; the first end of the needle head is opposite to the through hole; a handle is fixedly formed on the upper side of the needle head base; a handle extending from the incision to the exterior; a cavity is formed in the needle head base, and the second end of the needle head is communicated with the cavity; an opening is formed on one side of the cavity facing the cylinder;
a channel is formed at the first end of the connecting part of the cylinder body and the needle base sliding tube, the first end of the channel is formed on the needle base sliding tube, and the second end of the channel is formed on the cylinder body, so that the inside of the cylinder body is communicated with the inside of the needle base sliding tube; an annular rubber tube is arranged in the channel, the second end of the annular rubber tube is flush with the inner wall of the barrel, and the first end of the annular rubber tube protrudes out of the inner surface of the needle head base sliding tube;
when the channel is aligned with the opening of the cavity of the needle base, the first end of the annular rubber tube is abutted against the needle base to form sealing, and the needle, the cavity, the annular rubber tube and the barrel are communicated.
2. The sliding needle syringe of claim 1, wherein:
the opening of the cavity of the needle head base is formed into a horn-shaped opening; a guide inclined plane is formed at the first end of the annular rubber tube; when the annular rubber tube is aligned with the opening of the cavity of the needle base, the first end of the annular rubber tube abuts against the trumpet-shaped opening of the cavity of the needle base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122928551.2U CN216394894U (en) | 2021-11-26 | 2021-11-26 | Syringe with sliding needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122928551.2U CN216394894U (en) | 2021-11-26 | 2021-11-26 | Syringe with sliding needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216394894U true CN216394894U (en) | 2022-04-29 |
Family
ID=81302749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122928551.2U Expired - Fee Related CN216394894U (en) | 2021-11-26 | 2021-11-26 | Syringe with sliding needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216394894U (en) |
-
2021
- 2021-11-26 CN CN202122928551.2U patent/CN216394894U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220429 |