CN205683354U - Safety syringe - Google Patents
Safety syringe Download PDFInfo
- Publication number
- CN205683354U CN205683354U CN201620411553.0U CN201620411553U CN205683354U CN 205683354 U CN205683354 U CN 205683354U CN 201620411553 U CN201620411553 U CN 201620411553U CN 205683354 U CN205683354 U CN 205683354U
- Authority
- CN
- China
- Prior art keywords
- syringe
- sleeve
- needle
- external screw
- screw thread
- 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.)
- Active
Links
- 210000002445 nipple Anatomy 0.000 claims abstract description 22
- 239000012780 transparent material Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 208000012266 Needlestick injury Diseases 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a safety syringe, relating to the technical field of medical equipment. The safety injector comprises a needle cylinder, a piston and a push rod, wherein a check ring is arranged at one end of the needle cylinder close to a nipple, a first external thread is arranged on the outer side of the needle cylinder at the other side of the check ring opposite to the nipple, and a second external thread is arranged on the outer side of one end of the needle cylinder close to a needle cylinder handle; the safety syringe further comprises a sleeve, the sleeve is sleeved outside the syringe, an internal thread is arranged on the inner side of one end of the sleeve, and the internal thread can be matched with the first external thread and the second external thread respectively. Before use, the internal thread is connected with the first external thread, so that the needle head is positioned in the sleeve, and the needle stick injury is avoided; when the syringe is used, the sleeve is rotated to connect the internal thread with the second external thread, so that the needle head can be completely exposed; after the injection finishes, the internal thread of the rotary sleeve is connected with the first external thread, so that the needle head is positioned in the sleeve, and then the needle head is discarded and processed, thereby avoiding the operation of back sleeving the needle sleeve and avoiding the needle stick injury. The retainer ring prevents the sleeve from sliding out of the syringe and enables the sleeve and the syringe to be screwed relatively.
Description
Technical field
This utility model relates to a kind of medical device, is specially a kind of syringe.
Background technology
Existing syringe includes syringe and piston, and piston connects push rod, realizes drawing and injection by push-and-pull push rod,
Use the problem that middle existence is the safest.For the separable syringe of nipple of syringe needle Yu syringe, unload and take syringe needle and be susceptible to
Pricking wound；Syringe needle is fixed on to the Supramammillary syringe of syringe, after syringe uses, when returning set needle guard, is susceptible to thorn
Wound.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of safety injector.
This utility model solves the technical scheme is that safety injector of its technical problem, including syringe, piston and
Push rod, described syringe one end is nipple, and the syringe other end is syringe handle, and piston is positioned at syringe and is connected with push rod；Described pin
Cylinder arranges a circle back-up ring near one end of nipple, and back-up ring is relative to arranging the first external screw thread, pin outside the syringe of the opposite side of nipple
Cylinder arranges the second external screw thread near the outside of syringe handle one end；Also including sleeve, sleeve is placed on outside syringe, the inner side of sleeve one end
Female thread is set, and described female thread can be suitable with the first external screw thread and the second external screw thread respectively.
Further, the cross section of described back-up ring presents right triangular shape, and the hypotenuse of right angled triangle is located close to
The side of nipple.
Further, described syringe includes that syringe needle, described syringe needle are fixed on described nipple.
Further, described syringe includes that syringe needle, syringe needle are positioned on nipple, the female thread of sleeve and the first of syringe
When external screw thread is threaded, syringe needle is entirely located in sleeve, and: the externally threaded distance≤sleeve of the first external screw thread to second
Length≤the second external screw thread is to the distance of back-up ring.
Further, being provided with volume markings, syringe and sleeve outside described syringe all selects transparent material to make.
The beneficial effects of the utility model are: the female thread of sleeve can respectively with the first external screw thread or the second outer spiral shell of syringe
Stricture of vagina connects, and before safety injector uses, the female thread of sleeve and the first external screw thread connect so that syringe needle is positioned at sleeve, it is to avoid
Pricking wound；When using safety injector, turnbarrel makes the female thread of sleeve be connected with the second external screw thread of syringe, can be the most sudden and the most violent
Dew syringe needle；After safety injection, turnbarrel makes the female thread of sleeve be connected with the first external screw thread of syringe so that syringe needle position
In sleeve, then discard processing, can avoid back overlapping needle guard operation, it is to avoid pricking wound.Back-up ring avoids sleeve from syringe outside slip
Go out, when also making the female thread of sleeve be connected with the first external screw thread of syringe, can relatively screw between sleeve and syringe.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model safety injector.
Parts, position and numbering in figure: syringe 10, nipple 11, syringe handle 12, back-up ring the 13, first external screw thread 14, second
External screw thread 15, push rod 21, piston 22, sleeve 30, female thread 31, syringe needle 40.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, this utility model safety injector, including syringe 10, piston 22 and push rod 21, syringe 10 one end is
Nipple 11, syringe 10 other end is syringe handle 12, and piston 22 is positioned at syringe 10 and is connected with push rod 21, is provided with outside syringe 10
Volume markings, syringe 10 selects transparent plastics to make.Syringe 10 arranges a circle back-up ring 13, back-up ring 13 near one end of nipple 11
Relatively arranging the first external screw thread 14 outside the syringe 10 of the opposite side of nipple 11, the left side of back-up ring 13 is nipple the most as shown in Figure 1
11, the right side of back-up ring 13 is the first external screw thread 14.Syringe 10 arranges the second external screw thread 15 near the outside of syringe handle 12 one end.
Safety injector also includes that sleeve 30, sleeve 30 are placed on outside syringe 10, and the inner side of sleeve 30 one end arranges female thread
31, and described female thread 31 can be suitable with the first external screw thread 14 and the second external screw thread 15 respectively.Can be by sleeve 30 by extruding
Penetrating syringe 10, back-up ring 13 is used for avoiding sleeve 30 to skid off from syringe 10, and the cross section of back-up ring 13 presents right triangular shape, and directly
Angle hypotenuse is located close to the side of nipple 11.
Syringe includes that syringe needle 40, syringe needle 40 are fixed on nipple 11.Back-up ring 13 avoids sleeve 30 outside syringe 10
Skid off.Before safety injector uses, the female thread 31 of sleeve 30 is connected with the first external screw thread 14 so that syringe needle 40 is positioned at sleeve 30
In, it is to avoid pricking wound.Now, back-up ring 13 also has the effect that can relatively screw between maintenance sleeve 30 and syringe 10.Rotary sleeve
Cylinder 30 makes the female thread 31 of sleeve 30 be connected with the second external screw thread 15 of syringe 10, and syringe needle 40, and syringe handle 12 can be completely exposed
Having the effect limiting sleeve 30 stroke, syringe handle 12 makes sleeve 30 firmly can be connected with the second external screw thread 15.Inject complete
After, turnbarrel 30 makes the female thread 31 of sleeve 30 be connected with the first external screw thread 14 of syringe 10 so that syringe needle 40 is positioned at sleeve
In 30, then discard processing, can avoid back overlapping needle guard operation, it is to avoid pricking wound.Additionally, safety injector also can be selected for separate type
Syringe needle 40.
In order to ensure the sleeve 30 protective effect to syringe needle 40, the female thread 31 of sleeve 30 and the first external screw thread of syringe 10
14 when connecting, and syringe needle 40 is entirely located in sleeve 30, be i.e. first external screw thread 14 distance to needle point less than sleeve 30 length, and
And: length≤the second external screw thread of the distance≤sleeve 30 of first external screw thread the 14 to the second external screw thread 15 15 to back-up ring 13 away from
From.
Claims (5)
1. safety injector, including syringe (10), piston (22) and push rod (21), described syringe (10) one end is nipple (11),
Syringe (10) other end is syringe handle (12), and piston (22) is positioned at syringe (10) and is connected with push rod (21)；It is characterized in that:
Described syringe (10) arranges a circle back-up ring (13) near one end of nipple (11), the opposite side of back-up ring (13) nipple (11) relatively
Syringe (10) outside arranges the first external screw thread (14), and syringe (10) arranges the second external screw thread near the outside of syringe handle (12) one end
(15)；Also including that sleeve (30), sleeve (30) are placed on syringe (10) outward, the inner side of sleeve (30) one end arranges female thread (31),
And described female thread (31) can be suitable with the first external screw thread (14) and the second external screw thread (15) respectively.
2. safety injector as claimed in claim 1, it is characterised in that: the cross section of described back-up ring (13) presents right angled triangle
Shape, and the hypotenuse of right angled triangle is located close to the side of nipple (11).
3. safety injector as claimed in claim 1, it is characterised in that: described syringe includes syringe needle (40), described syringe needle
(40) it is fixed on described nipple (11).
4. safety injector as claimed in claim 3, it is characterised in that: described syringe includes syringe needle (40), syringe needle (40)
It is positioned on nipple (11), when the female thread (31) of sleeve (30) is threadeded with first external screw thread (14) of syringe (10), syringe needle
(40) it is entirely located in sleeve (30), and: the distance≤sleeve (30) of the first external screw thread (14) to the second external screw thread (15)
Length≤the second external screw thread (15) is to the distance of back-up ring (13).
5. safety injector as claimed in claim 1, it is characterised in that: described syringe (10) outside is provided with volume markings, pin
Cylinder (10) and sleeve (30) all select transparent material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620411553.0U CN205683354U (en) | 2016-05-09 | 2016-05-09 | Safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620411553.0U CN205683354U (en) | 2016-05-09 | 2016-05-09 | Safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205683354U true CN205683354U (en) | 2016-11-16 |
Family
ID=57261597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620411553.0U Active CN205683354U (en) | 2016-05-09 | 2016-05-09 | Safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205683354U (en) |
-
2016
- 2016-05-09 CN CN201620411553.0U patent/CN205683354U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |