CN208958990U - A kind of pressure injector at the uniform velocity injection aid - Google Patents
A kind of pressure injector at the uniform velocity injection aid Download PDFInfo
- Publication number
- CN208958990U CN208958990U CN201821487535.6U CN201821487535U CN208958990U CN 208958990 U CN208958990 U CN 208958990U CN 201821487535 U CN201821487535 U CN 201821487535U CN 208958990 U CN208958990 U CN 208958990U
- Authority
- CN
- China
- Prior art keywords
- syringe
- piston
- collar flange
- needle
- syringe needle
- 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
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a kind of pressure injector at the uniform velocity injection aids, belong to injection aid field.Including syringe needle, syringe, piston rod；It further include piston and filling mechanism；The first collar flange, the second collar flange, third collar flange are successively arranged on piston and the outer circle wall of one end far from piston rod；Relative size between first collar flange, the second collar flange, the outer rim of third collar flange and the central axes of piston successively becomes larger；Filling mechanism includes liquid feeding pipeline, sealing stick harness, and liquid feeding pipeline is vertical on the lateral wall of syringe.A kind of pressure injector at the uniform velocity injection aid of the utility model has structure simple operations convenient and simple, and stability of the injection aid when pushing piston rod to enter pressurization can be improved in the good sealing performance of piston, so that fltting speed can keep stable；Can reduce patient puncture and caused by pain, for infusion provide convenience, mitigate the pressure of medical staff.
Description
Technical field
The utility model relates to injection aid fields, and auxiliary dress is at the uniform velocity injected more particularly to a kind of pressure injector
It sets.
Background technique
Pressure injector has been widely used in medical field at present, and syringe generally comprises syringe, piston and piston rod,
For convenient for injecting and aspirating, piston rod rear end pushes away cake equipped with disk-shaped.Under the action of piston rod realize by injecting liquid drug into
Enter in human body, when piston rod being pushed to move along needle cylindrical unit, due to mainly manually controlling, and piston and syringe inner wall are close
Fitting, the movement in syringe can generate abrasion to piston for a long time, once will lead to seal failure if serious wear while causing
Bad stability when piston rod pressurization, liquid feeding, so that fltting speed is inconsistent.It is, therefore, desirable to provide effective scheme solves
Certainly problem above.
Utility model content
In order to overcome the drawbacks of the prior art, the technical problem to be solved by the utility model is to propose a kind of pressure note
Emitter at the uniform velocity injection aid has structure simple operations convenient and simple, and injection can be improved in the good sealing performance of piston
Stability of the auxiliary device when pushing piston rod to enter pressurization, so that fltting speed can keep stable；It can reduce patient to wear
Thorn and caused by pain, for infusion provide convenience, mitigate the pressure of medical staff.
For this purpose, the utility model uses following technical scheme:
The utility model provides a kind of pressure injector at the uniform velocity injection aid, including syringe needle, syringe, piston rod；
It further include piston and filling mechanism；
The syringe needle and the syringe are coaxially disposed, and the outlet end of the syringe is equipped with externally threaded interconnecting piece, described
The syringe needle end that is connected with the syringe sets needle stand, internal thread hole is equipped in the needle stand, the syringe needle passes through the needle stand and institute
State interconnecting piece threaded connection；The piston is movably located in the syringe, and the lateral wall of the piston and the syringe
Inner sidewall be in contact, the piston is fixed at one end of the piston rod；
The piston is made using medical grade rubber material, the outer circle of the piston and one end far from the piston rod
The first collar flange, the second collar flange and third collar flange are successively arranged on peripheral wall；First collar flange, institute
State relative size between the outer rim of the second collar flange and the third collar flange and the central axes of the piston successively
Become larger；
The filling mechanism is set on the lateral wall of the syringe, and the filling mechanism includes liquid feeding pipeline, seals stick harness,
The liquid feeding pipeline is stated on the lateral wall of syringe described in being vertical at, and is equipped with outer spiral shell on the both ends tube wall of the liquid feeding pipeline
One end of line, the liquid feeding pipeline is threadedly coupled with the syringe, the other end of the liquid feeding pipeline and the sealing stick harness spiral shell
Line connection.
Optionally, first collar flange, second collar flange and the third collar flange are equipped with down
Angle.
Optionally, the syringe needle is equipped with sheath, and the sheath is actively socketed on the syringe needle, and the sheath is installed to
Behind position, the needle tip end and the sheath have clearance space.
Optionally, several bellmouths are offered on the periphery wall of the close needle tip of the syringe needle, the bellmouth is in circle
All array distributions, the bellmouth are connected with the needle wall.
Optionally, the larger-size open end of the pyramidal structure of the bellmouth is in the outer wall of the syringe needle, taper knot
The lesser open end of structure size is in the inner wall of the syringe needle.
The utility model has the following beneficial effects:
A kind of pressure injector at the uniform velocity injection aid of the utility model has structure simple operations convenient and simple,
Stability of the injection aid when pushing piston rod to enter pressurization can be improved in the good sealing performance of piston, so that promoting
Speed can keep stable；Can reduce patient puncture and caused by pain, for infusion provide convenience, mitigate the pressure of medical staff
Power.
Detailed description of the invention
Fig. 1 is a kind of structure for pressure injector at the uniform velocity injection aid that specific embodiment of the present invention provides
Schematic diagram；
Fig. 2 is the structural schematic diagram amplified at the A of specific embodiment of the present invention offer；
Fig. 3 is the structural schematic diagram amplified at the B of specific embodiment of the present invention offer；
Fig. 4 is the structural schematic diagram for the piston that specific embodiment of the present invention provides.
In figure:
1, syringe needle；2, syringe；3, piston rod；4, piston；5, filling mechanism；6, needle stand；7, sheath；11, bellmouth；21,
Interconnecting piece；41, the first collar flange；42, the second collar flange；43, third collar flange；51, liquid feeding pipeline；52, sealing-plug
Column.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
As shown in Figs 1-4, a kind of pressure injector at the uniform velocity injection aid, including syringe needle 1, syringe 2, piston rod 3；Also
Including piston 4 and filling mechanism 5；Syringe needle 1 and syringe 2 are coaxially disposed, and the outlet end of syringe 2 is equipped with externally threaded connection
Portion 21, the end that is connected with syringe 2 of syringe needle 1 set needle stand 6, internal thread hole are equipped in needle stand 6, syringe needle 1 passes through needle stand 6 and interconnecting piece 21
It is threadedly coupled；Piston 4 is movably located in syringe 2, and the lateral wall of piston 4 is in contact with the inner sidewall of syringe 2, piston 4
It is fixed at one end of piston rod 3；Piston 4 is made using medical grade rubber material, piston 4 and one end far from piston rod 3
Outer circle wall on be successively arranged the first collar flange 41, the second collar flange 42 and third collar flange 43；First is cyclic annular
Relative size between flange 41, the outer rim of the second collar flange 42 and third collar flange 43 and the central axes of piston 4 according to
It is secondary to become larger；Filling mechanism 5 is set on the lateral wall of syringe 2, and filling mechanism 5 includes liquid feeding pipeline 51, sealing stick harness 52, liquid-feeding tube
Road 51 is vertical on the lateral wall for stating syringe 2, and external screw thread is equipped on the both ends tube wall of liquid feeding pipeline 51, liquid feeding pipeline 51
One end is threadedly coupled with syringe 2, and the other end of liquid feeding pipeline 51 is threadedly coupled with sealing stick harness 52.
Above to implement, specifically, specially syringe needle 1 and syringe 2 are coaxially disposed, and the outlet end of syringe 2 is equipped with outer spiral shell
The interconnecting piece 21 of line, the end that is connected with syringe 2 of syringe needle 1 set needle stand 6, are equipped with internal thread hole in needle stand 6, syringe needle 1 by needle stand 6 with
Interconnecting piece 21 is threadedly coupled；Piston 4 is movably located in syringe 2, and the lateral wall of piston 4 connects with the inner sidewall of syringe 2
Touching, piston 4 are fixed at one end of piston rod 3；Piston 4 is made using medical grade rubber material, can specifically use silicon rubber
Glue is made.
For 4 structure of a more step piston, first is successively arranged on the outer circle wall of piston 4 and one end far from piston rod 3
Collar flange 41, the second collar flange 42 and third collar flange 43；First collar flange 41, the second collar flange 42, with
And third collar flange 43 outer rim and piston 4 central axes between relative size successively become larger；Since Fig. 1 and Fig. 2 is to live
The assembling schematic diagram of plug 4 and syringe 2, and the schematic diagram presented after assembling for piston 4, the structure chart of specific piston 4 can join
As shown in Figure 4, the cross sectional shape of the first collar flange 41, the second collar flange 42 and third collar flange 43 is V-arrangement；It is logical
Cross the axis by the relative size between the first collar flange 41 and the axis of piston 4 less than the second collar flange 42 and piston 4
Between relative size, i.e., the size of h1 be less than h2 size；Phase between second collar flange 42 and the axis of piston 4 simultaneously
Relative size between third collar flange 43 and the axis of piston 4, i.e. size of the size of h2 less than h3 are less than to size；One
The structure of piston 4 can be improved in the setting of aspect the first collar flange 41, the second collar flange 42 and third collar flange 43
On the other hand intensity when piston 4 and syringe 2 are in mating connection, improves the bonding strength of piston 4 and 2 junction of syringe, prevents
The seal failure that deformation after only piston 4 is used for multiple times is eventually led to, while the first collar flange 41, the second collar flange are set
42, third collar flange 43 may be implemented multi-stage sealed, the multiple sealed passages of formation and hinder layer by layer, improves the leakproofness of piston 4
Can, and then improve the service life of piston 4；It should be noted that the good sealing of piston 4 can be improved the pressurization of piston rod 3, add
Stability when liquid, so that fltting speed can keep stable；So that drug is at the uniform velocity injected into human body.In addition filling mechanism 5 is set
In on the lateral wall of syringe 2, filling mechanism 5 includes liquid feeding pipeline 51, sealing stick harness 52, and liquid feeding pipeline 51, which is vertical at, states syringe
On 2 lateral wall, external screw thread is equipped on the both ends tube wall of liquid feeding pipeline 51, one end of liquid feeding pipeline 51 and 2 screw thread of syringe connect
Connect, the other end of liquid feeding pipeline 51 is threadedly coupled with sealing stick harness 52, external medical fluid can by after unscrewing sealing stick harness 52 from
The injection of liquid feeding pipeline 51 is added, and liquid feeding pipeline 51 is all made of polytetrafluoroethylene (PTFE) with sealing stick harness 52 and is made, so that liquid-feeding tube
Road 51 and sealing stick harness 52 are nontoxic and the features such as do not cause allergy, ageing properties good.
In conclusion external medical fluid is by being added to syringe 2, cylinder from the injection of liquid feeding pipeline 51 after unscrewing sealing stick harness 52
Telescopic rod and piston rod 3 are coaxially disposed, it is ensured that push-and-pull piston rod 3 and piston 4 move in syringe 2, when piston 4 and 2 phase of syringe
When mating connection, the bonding strength of piston 4 and 2 junction of syringe is improved, the deformation after preventing piston 4 to be used for multiple times is eventually led to
Seal failure, while be arranged the first collar flange 41, the second collar flange 42, third collar flange 43, multistage may be implemented
It seals, form multiple sealed passages and hinder layer by layer, improve the sealing performance of piston 4, and then improve the service life of piston 4；It needs
It is noted that the good stability sealed when the pressurization of piston rod 3, liquid feeding can be improved of piston 4, so that fltting speed can be protected
It is fixed to keep steady；So that drug is at the uniform velocity injected into human body.
It is cyclic annular convex that the first collar flange 41, second is successively arranged on piston 4 and the outer circle wall of one end far from piston rod 3
Edge 42 and third collar flange 43
Optionally the first collar flange 41, the second collar flange 42 and third collar flange 43 are equipped with chamfering, are convenient for
Guiding role when piston 4 and piston 4 are installed.
Optionally, syringe needle 1 is equipped with sheath 7, and sheath 7 is actively socketed on syringe needle 1, after sheath 7 is installed in place, syringe needle 1
Needle tip and sheath 7 have clearance space, and specifically, sheath 7 is set on needle stand 6, and sheath 7 and 6 transition fit of needle stand, when
For sheath 7 after needle stand 6 is installed in place, 1 needle tip of syringe needle and sheath 7 have clearance space, it is ensured that syringe needle 1 is sealed completely by sheath 7
It entangles, sheath 7 can protect syringe needle 1 injury-free before syringe needle 1 punctures；Also needle can be solved after the completion of syringe needle 1 punctures indwelling
First 1 recycling is easy to make one injured problem, stabs medical staff so as to avoid syringe needle 1 is exposed.
Optionally, several bellmouths 11 are offered on the periphery wall of the close needle tip of syringe needle 1, the circumferentially battle array of bellmouth 11
It is connected inside column distribution, bellmouth 11 and syringe needle 1, the setting of bellmouth 11, so that circulation is logical when medical fluid passes through inside of human body
Road increases, and increases the diffusion of drug, reduces drug and concentrates into human body, reduces the compressing to tissue, while improving drug
Diffusion effect.
Optionally, the larger-size open end of the pyramidal structure of bellmouth 11 is in the outer wall of syringe needle 1, pyramidal structure size
Lesser open end is in the inner wall of syringe needle 1, and specifically, when drug is through at bellmouth 11, the drug under identical flow direction passes through
When flow direction is located at the larger-size open end of 1 outer wall of syringe needle behind lesser open end, the flow velocity that drug is flowed into human body is reduced,
Alleviate compressing of the medicament flow rate greatly to being pierced into around point, further relieves pain, pain when injecting greatly is reduced.
The utility model is described with reference to the preferred embodiments, and those skilled in the art know, is not departing from this reality
In the case where with novel spirit and scope, various changes or equivalence replacement can be carried out to these features and embodiment.This reality
It is not limited to the particular embodiment disclosed with novel, other embodiments fallen into claims hereof all belong to
In the range of the utility model protection.
Claims (5)
1. a kind of pressure injector at the uniform velocity injection aid, including syringe needle (1), syringe (2), piston rod (3)；Its feature exists
In:
It further include piston (4) and filling mechanism (5)；
The syringe needle (1) and the syringe (2) are coaxially disposed, and the outlet end of the syringe (2) is equipped with externally threaded interconnecting piece
(21), the syringe needle (1) end that is connected with the syringe (2) is set needle stand (6), and internal thread hole is equipped in the needle stand (6), described
Syringe needle (1) is threadedly coupled by the needle stand (6) with the interconnecting piece (21)；The piston (4) is movably located on the needle
In cylinder (2), and the lateral wall of the piston (4) is in contact with the inner sidewall of the syringe (2), and the piston (4) is fixed at
One end of the piston rod (3)；
The piston (4) is made using medical grade rubber material, the piston (4) and one end far from the piston rod (3)
Outer circle wall on be successively arranged the first collar flange (41), the second collar flange (42) and third collar flange (43)；Institute
State the outer rim of the first collar flange (41), second collar flange (42) and the third collar flange (43) with it is described
Relative size between the central axes of piston (4) successively becomes larger；
The filling mechanism (5) be set to the syringe (2) lateral wall on, the filling mechanism (5) include liquid feeding pipeline (51),
Seal stick harness (52), the liquid feeding pipeline (51) be vertical at it is described state on the lateral wall of syringe (2), the liquid feeding pipeline (51)
Both ends tube wall on be equipped with external screw thread, one end of the liquid feeding pipeline (51) is threadedly coupled with the syringe (2), the liquid feeding
The other end of pipeline (51) is threadedly coupled with the sealing stick harness (52).
2. a kind of pressure injector as described in claim 1 at the uniform velocity injection aid, it is characterised in that:
First collar flange (41), second collar flange (42) and the third collar flange (43) are equipped with
Chamfering.
3. a kind of pressure injector as described in claim 1 at the uniform velocity injection aid, it is characterised in that:
The syringe needle (1) is equipped with sheath (7), and the sheath (7) is actively socketed on the syringe needle (1), sheath (7) peace
After being attached to position, syringe needle (1) needle tip and the sheath (7) have clearance space.
4. a kind of pressure injector as described in claim 1 at the uniform velocity injection aid, it is characterised in that:
It is offered several bellmouths (11) on the periphery wall of the close needle tip of the syringe needle (1), the bellmouth (11) is in circle
It is connected inside all array distributions, the bellmouth (11) and the syringe needle (1).
5. a kind of pressure injector as claimed in claim 4 at the uniform velocity injection aid, it is characterised in that:
The larger-size open end of pyramidal structure of the bellmouth (11) is in the outer wall of the syringe needle (1), pyramidal structure ruler
Very little lesser open end is in the inner wall of the syringe needle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821487535.6U CN208958990U (en) | 2018-09-12 | 2018-09-12 | A kind of pressure injector at the uniform velocity injection aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821487535.6U CN208958990U (en) | 2018-09-12 | 2018-09-12 | A kind of pressure injector at the uniform velocity injection aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208958990U true CN208958990U (en) | 2019-06-11 |
Family
ID=66755200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821487535.6U Active CN208958990U (en) | 2018-09-12 | 2018-09-12 | A kind of pressure injector at the uniform velocity injection aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208958990U (en) |
-
2018
- 2018-09-12 CN CN201821487535.6U patent/CN208958990U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208958990U (en) | A kind of pressure injector at the uniform velocity injection aid | |
| CN105797241A (en) | A multi-cavity syringe | |
| CN205832284U (en) | A kind of positive pressure needle-free infusion connector | |
| CN204395142U (en) | A kind of type self-destroyed bilayer engaging syringe of pulling back safely | |
| CN206792742U (en) | Infusion pump elasticity device for storing liquid | |
| CN211798072U (en) | Atomizer and spray nozzle assembly | |
| CN205073415U (en) | Injector | |
| CN210145216U (en) | Syringe for viscous liquid medicine | |
| CN107029318A (en) | Disposable medical fluid injector | |
| CN206979616U (en) | Novel livestock animal doctor's continuous drencher | |
| CN203662938U (en) | Continuous injector | |
| CN209695837U (en) | A kind of medical fluid blends conveying device | |
| CN209771007U (en) | Add medicine and connect | |
| CN206577234U (en) | A kind of medical muscle fusion injection device | |
| CN207694024U (en) | Disposable medical fluid injector | |
| CN110721373A (en) | Atomizer and spray nozzle assembly | |
| CN204092689U (en) | A kind of intestine moistening gel instrument for defecation | |
| CN204106741U (en) | Double needle syringe | |
| CN105105868B (en) | Disposable breast prosthesis injector | |
| CN221671931U (en) | Bone cement injector | |
| CN109045402A (en) | A set of closed needleless connects infusion device | |
| CN103654997A (en) | Continuous injector | |
| CN208552500U (en) | A kind of syringe | |
| CN201894766U (en) | Syringe | |
| CN209361332U (en) | A kind of ampoule bottle dispensing needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |