CN208864886U - a syringe - Google Patents
a syringe Download PDFInfo
- Publication number
- CN208864886U CN208864886U CN201820546692.3U CN201820546692U CN208864886U CN 208864886 U CN208864886 U CN 208864886U CN 201820546692 U CN201820546692 U CN 201820546692U CN 208864886 U CN208864886 U CN 208864886U
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- CN
- China
- Prior art keywords
- syringe
- plunger rod
- threaded portion
- fixed part
- syringe according
- 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
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This application provides a kind of syringes, it include: syringe, the plunger rod being movably arranged in the syringe and the syringe needle for being set in the syringe front end, wherein, one end of the plunger rod is arranged with elastic seal ring, the leading portion of the plunger rod is provided with threaded portion, and the back segment of the syringe is arranged fixed part, has internal screw thread on the inner wall of the fixed part, the threaded portion of the plunger rod and the fixed part threaded engagement realize position of the fixed plunger rod in the syringe.Syringe provided by the present application solves existing syringe suction difficulty and maintains, and the liquid sucked in syringe is pushed back internal problem.
Description
Technical field
The utility model relates in the technical field of medical instrument, more particularly to a kind of syringe.
Background technique
Syringe is a kind of important health care tool, cannot be only used for drug aspiration injection, clinic can also be used to take out
The samples such as liquid, fester, tissue of sucking blood are used for clinical examination and analysis.In aspiration procedure, need to maintain certain negative pressure.Currently,
Most syringes used in hospital, the maintenance of suction need medical staff's left hand to hold syringe, and the right hand pulls
And fixed maintenance piston rod, to maintain negative pressure, guarantees that aspirate is smoothly extracted out in certain scale or reduced pressure.This behaviour
Make, whole process needs medical staff's right hand to be limited to the suction operation, greatly limits the possibility of other operations.Meanwhile to viscous
Thick or fine and close aspirate, it may be necessary to which more long holds time.The maintenance of human hand long period muscle, may cause
Fatigue, the discomforts such as ache, it is also possible to change the negative pressure in syringe because of slight muscle maintenance energy variation, even result in
The object of suction is retracted in vivo.
Utility model content
The purpose of the utility model is to provide a kind of syringes, solve existing syringe suction difficulty and maintain, and
The liquid sucked in syringe is pushed back into internal problem.
In order to solve the above technical problems, the utility model provides the following technical solutions:
A kind of syringe, comprising: syringe, the plunger rod being movably arranged in the syringe and be set in the syringe front end
Syringe needle, wherein one end of the plunger rod is arranged with elastic seal ring, and the leading portion of the plunger rod is provided with threaded portion, institute
The back segment setting fixed part for stating syringe, has internal screw thread on the inner wall of the fixed part, the threaded portion of the plunger rod with it is described
Fixed part threaded engagement realizes position of the fixed plunger rod in the syringe.
Further, the plunger rod includes the linkage section for being connected to the threaded portion rear end, and is connected to the screw thread
The stopper head of portion front end.
Further, the elastic seal ring is set on the stopper head.
Further, the plunger rod further includes the press section that the linkage section rear end is arranged in.
Further, the edge of the stopper head has several fins, the inside of the elastic seal ring have with
The compatible groove of the fin.
Further, the rear end sides of the syringe are provided with lug.
Further, the thread turns of the threaded portion is 3~5 circles.
Further, the outer diameter of the linkage section is less than the outer diameter of the threaded portion.
It can be seen from above-mentioned technical proposal the utility model has the following beneficial effects:
Due to having internal screw thread on the inner wall of the fixed part, the threaded portion of the plunger rod and the fixed part screw thread revolve
It closes, for fixing position of the plunger rod in the syringe, so that the negative pressure in the syringe maintains to stablize, while also keeping away
The problem of syringe releases the liquid sucked in syringe easily is exempted from.
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the whole the schematic diagram of the section structure of the utility model.
Fig. 2 is the structural schematic diagram of the plunger rod of the utility model.
Description of symbols:
Syringe -1, accommodating cavity -11, lug -12, fixed part -13, plunger rod -2, stopper head -21, fin -211, pressing
Portion -22, threaded portion -23, linkage section -24, elastic seal ring -3, syringe needle -5.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
The application is described further below with reference to Fig. 1 to Fig. 2, a kind of syringe as shown in Figure 1, comprising: syringe
1, the plunger rod 2 that is movably arranged in the syringe 1 and the syringe needle 5 for being set in 1 front end of syringe, the one of the plunger rod 2
End cap is equipped with elastic seal ring 3, and the leading portion of the plunger rod 2 is provided with threaded portion 23, and fixed part is arranged in the back segment of the syringe 1
13, there is internal screw thread, the threaded portion 23 of the plunger rod 2 and 13 screw thread of fixed part revolve on the inner wall of the fixed part 13
It closes, for realizing position of the fixation plunger rod 2 in the syringe 1, so that the negative pressure in the syringe 1 maintains to stablize.
As shown in Fig. 2, the plunger rod 2 includes the linkage section 24 for being connected to 23 rear end of threaded portion, and it is connected to institute
The stopper head 21 of 23 front end of threaded portion is stated, the elastic seal ring 3 is set on the stopper head 21, specifically, the elasticity
Sealing ring 3 is rubber material.
The plunger rod 2 further includes the press section 22 that 24 rear end of linkage section is arranged in.
The edge of the stopper head 21 has several fins 211, the inside of the elastic seal ring 3 have with it is described convex
The front end of the compatible groove of rib 211, the stopper head 21 has fixed lobe, and it is close that the fixed lobe extends to the elasticity
In fixing groove inside seal 3, so that the elastic seal ring 3 keeps the front end for being adjacent to the stopper head 21.
As shown in Figure 1, the rear end sides of the syringe 1 are provided with lug 12, the lug 12 is caught convenient for user,
Promote or pull out the plunger rod 2.
Preferably, the thread turns of the threaded portion 23 is 3~5 circles.
The outer diameter of the linkage section 24 is less than the outer diameter of the threaded portion 23, so that the plunger rod 2 is in the spiral shell
Smooth sliding is without hindrance in 23 accommodating cavity 11 of line portion
The rear end of the plunger rod 2 has press section 22,2 activity of plunger rod is pushed convenient for user, in use, pressing
Press the press section 22 that the plunger rod 2 will be pushed to move in the syringe 1.
The needle stand set of the syringe needle 5 is set in the front end of the syringe 1, so that the syringe needle 5 and the fixed company of the syringe 1
It connects.
The syringe needle 5 can configure staight needle head or No. 8 syringe needles.
Syringe needle 5 or suction syringe needle used.
There is accommodating cavity 11, the plunger rod 2 is slidably arranged in the accommodating cavity 11, described close inside the syringe 1
The outer peripheral surface of seal 3 is kept out on the inner wall of the accommodating cavity 11, and the liquid being drawn into is avoided to drain to the elastic seal ring 3
The other side.
There is scale value, convenient for reading the volume of liquid in the syringe 1, when to the needle on the outer wall of the syringe 1
After the liquid of sucking sufficient amount reaches in cylinder 1, the plunger rod 2 is hauled, meanwhile, it rotates by hand and moves the plunger rod 2, so that described
The threaded portion 23 of plunger rod 2 and the internal screw thread of the fixed part 13 mutually screw, for realizing the fixation plunger rod 2 described
Position in syringe 1 has liberated the hand of operator, has avoided the maintenance of human hand long period muscle, may cause tired
Labor, the discomforts such as ache, very easy to use, the plunger rod 2 can also be effectively prevent, which to slide back and forth, to be caused in the accommodating cavity 11
Liquid negative pressure change, thus prevent syringe by suck syringe in liquid release easily.
Specifically, the internal screw thread of the fixed part 13 is identical as the external screw thread specification on the threaded portion.
Specifically, setting internal screw thread 3-5 is enclosed after the 1 rear end maximum scale of syringe such as 10ml.
External spiral 3-5 circle, spiral shell is directly arranged in stopper head 21 described in 3 rubber seal of elastic seal ring, the plunger rod 2
Line direction should be moves back from front to back, rotates backward, mutually screws with the internal screw thread of 1 rear end of syringe.
The threaded portion 23 of plunger rod 2 described in the utility model and the elastic seal ring 3 etc. are thick, so that the plunger rod
2 can be movable in syringe.
Vacuum suction dynamics volume in the utility model is determined, this is practical by different model such as 10,20,50ml syringe
It is novel to be suitable for testis needle puncture biopsy.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820546692.3U CN208864886U (en) | 2018-04-17 | 2018-04-17 | a syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820546692.3U CN208864886U (en) | 2018-04-17 | 2018-04-17 | a syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208864886U true CN208864886U (en) | 2019-05-17 |
Family
ID=66461181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820546692.3U Expired - Fee Related CN208864886U (en) | 2018-04-17 | 2018-04-17 | a syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208864886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658848A (en) * | 2020-07-09 | 2020-09-15 | 北京大学深圳医院 | Threaded Syringe |
-
2018
- 2018-04-17 CN CN201820546692.3U patent/CN208864886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658848A (en) * | 2020-07-09 | 2020-09-15 | 北京大学深圳医院 | Threaded Syringe |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 |