CN208372239U - A kind of dispensing injector with pin - Google Patents
A kind of dispensing injector with pin Download PDFInfo
- Publication number
- CN208372239U CN208372239U CN201820426866.2U CN201820426866U CN208372239U CN 208372239 U CN208372239 U CN 208372239U CN 201820426866 U CN201820426866 U CN 201820426866U CN 208372239 U CN208372239 U CN 208372239U
- Authority
- CN
- China
- Prior art keywords
- pintle
- syringe
- piston
- hole
- retaining ring
- 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
The utility model belongs to technical field of medical instrument, specifically disclose a kind of dispensing injector with pin, including syringe, syringe inner sealing is slidably connected the piston with pintle, and pintle is connected with pressure handle far from one end of piston, syringe is equipped with syringe needle far from one end of pintle, syringe is equipped with trunnion far from one end of syringe needle, and a through-hole is at least offered in the piston, and through-hole is equipped with waterproof ventilated membrane close to one end of syringe, check valve is equipped in through-hole, check valve can unidirectionally be opened by syringe needle to pintle direction；The pintle section is in ellipticity, offers several bayonets on pintle, and the retaining ring that can cooperate with bayonet is rotatably connected on trunnion, offers the elliptical aperture passed through for pintle in the middle part of retaining ring.This programme solves the problem of drug dissolution generates air pressure, is pushed outwardly piston by air pressure in syringe.
Description
Technical field
The utility model belongs to technical field of medical instrument more particularly to a kind of dispensing injector with pin.
Background technique
Currently, clinically making up a prescription is the most important thing in medical worker's routine work, medical worker makes up a prescription to patient
When use common syringe mostly, not only structure is simple and crude and has a single function for common syringe, when nurse takes out out of air-tight bottle
When taking liquid, biggish negative pressure can be generated in air-tight bottle, so that the process for extracting medical fluid is become time-consuming and laborious, at this time if by air
When being directly injected into air-tight bottle, though the negative pressure in air-tight bottle can be relieved, the sundries in air can be injected into air-tight bottle together
It is interior, it is contaminated to may cause sterile liquid medicine in air-tight bottle when serious.Then syringe aspiration medicinal liquid makes medical fluid mixed in syringe
It closes uniformly, however some drugs can release more gas after mixed dissolution, make to generate biggish pressure in syringe.Pressure
Reaction force is applied to piston by force, making medical worker, the operation is very troublesome, time-consuming and laborious, increases greatly to medical worker
Work difficulty.
Utility model content
The purpose of this utility model is to provide a kind of dispensing injector with pin, generate air pressure to solve drug dissolution in syringe,
The problem of being pushed outwardly piston by air pressure.
In order to achieve the above object, the base case of the utility model are as follows: a kind of dispensing injector with pin, including syringe, syringe
Inner sealing is slidably connected the piston with pintle, and pintle is connected with pressure handle far from one end of piston, syringe far from pintle one
End is equipped with syringe needle, and syringe is equipped with trunnion far from one end of syringe needle, at least offers a through-hole in the piston, through-hole is close to needle
One end of cylinder is equipped with waterproof ventilated membrane, is equipped with check valve in through-hole, check valve can unidirectionally be opened by syringe needle to pintle direction；It is described
The section of pintle is in ellipticity, offers several bayonets on pintle, and the retaining ring that can cooperate with bayonet is rotatably connected on trunnion,
The elliptical aperture passed through for pintle is offered in the middle part of retaining ring.
The working principle and beneficial effect of this base case are: since retaining ring is rotatably connected on trunnion, and retaining
Ring is equipped with the elliptical aperture passed through for pintle, so rotation retaining ring makes elliptical aperture and elliptoid pintle face before use,
That is the long axis of elliptical aperture and the long axis of pintle is located along the same line, and pintle is enabled to pass through elliptical aperture.
In use, inserting the needle into flask for medicinal preparations, it is located at syringe needle in medical fluid, then pulls out pressure handle, and in syringe
Stable pressure range is maintained between portion and medical fluid, when piston moves out, negative pressure can be generated in syringe, medical fluid is in negative pressure
Under the action of enter syringe in.After medical fluid fully enters in syringe, retaining ring is rotated by 90 °, makes the long axis and needle of elliptical aperture
The short axle of bolt is located along the same line.Due to offering several bayonets on pintle, so retaining ring can block after retaining ring rotation
It closes in bayonet, so that retaining ring and pintle is connected as an entirety, so pintle is in stationary state at this time.
Gas is generated when medical fluid dissolves in syringe, makes to generate larger pressure in syringe, pressure applies piston larger
Thrust, and since pintle is in stationary state, so pintle will not move by biggish power.Simultaneously because piston
Through-hole is inside offered, through-hole is equipped with waterproof ventilated membrane close to one end of syringe, so gas can be discharged by waterproof ventilated membrane,
And liquid can not pass through waterproof ventilated membrane.And due to being equipped with check valve in through-hole, check valve can be by syringe needle to pintle direction list
To opening, so gas can only be flowed from syringe needle to pintle direction, therefore in syringe or negative pressure, energy can be generated when pulling pintle
Enough draw medical fluid.
This programme structure is simple, and it is convenient to operate, at low cost, and practicability is high, by the way that retaining ring is arranged, so that pintle will not be by
The influence of pressure, avoids the problem of pintle falls off in syringe.Simultaneously by setting waterproof ventilated membrane, so that medical fluid dissolution produces
Raw gas can discharge, and keep the pressure in syringe not too big, ensure that and draw the logical of liquid dose and infusion process
Freely, time saving and energy saving, reduce the operation difficulty of medical worker.
Further, it is opened up in piston there are two through-hole, two through-holes are symmetrical relative to the axial line of piston.Setting two logical
Hole can guarantee that gas can smoothly be discharged in syringe, avoid the excessive damage piston of the pressure in syringe or syringe.
Further, sliding slot is offered on trunnion, retaining ring is equipped with the sliding block cooperated with sliding slot.Just by simple structure
The rotation of retaining ring is realized, cost performance is high.
Further, the material on pintle positioned at bayonet two sides is rubber.Bayonet made of rubber has biggish elasticity, makes
Obtaining retaining ring can easily be fastened in bayonet.
Further, pistons end is in coniform setting, and close syringe needle one end is leakage compatible with pistons end in syringe
It is bucket-shaped.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of dispensing injector with pin embodiment of the utility model；
Fig. 2 is the cross-sectional view in Fig. 1 at A.
Specific embodiment
The utility model is described in further detail below by specific embodiment:
Description of symbols: syringe needle 1, injection nipple 2, syringe 3, piston 4, waterproof ventilated membrane 5, check valve 6, pintle 7, card
Mouth 8, retaining ring 9, trunnion 10, pressure handle 11.
As shown in Figure 1 and Figure 2, a kind of dispensing injector with pin, including syringe 3, syringe needle 1 and piston 4.The left end of syringe 3 is equipped with note
Nipple 2 is penetrated, injects and is connected to inside nipple 2 and syringe 3, syringe needle 1 is set to the left end of injection nipple 2.The sealing of piston 4 is slidably connected at
In syringe 3, pintle 7 is fixedly connected on the right side of piston 4, the right end of pintle 7 is fixedly connected with pressure handle 11.A left side for piston 4
End is in coniform setting, and close 1 one end of syringe needle is funnel-form compatible with 4 end of piston in syringe 3.It is offered in piston 4
Two through-holes, two through-holes are symmetrical relative to the axial line of piston 4, and the left end of two through-holes is equipped with waterproof ventilated membrane 5, through-hole
Interior to be equipped with check valve 6, check valve 6 can be opened unidirectionally in direction from left to right.The section of pintle 7 is in ellipticity, if pintle 7 is equipped with
The material of dry bayonet 8,8 two sides of bayonet is rubber, and bayonet 8 is set on the long axis of pintle 7.The right end of syringe 3 is equipped with circle
Trunnion 10, offer cricoid sliding slot on trunnion 10, retaining ring 9 slidably connected in sliding slot.It is set on the left side of retaining ring 9
There is the sliding block with the annular of sliding slot cooperation.The middle part of retaining ring 9 offers the elliptical aperture passed through for pintle 7, the short axle of elliptical aperture
It is slightly less than the long axis of pintle 7, retaining ring 9 is enable to be fastened in mouth.
Since retaining ring 9 is rotatably connected on trunnion 10, and retaining ring 9 is equipped with the elliptical aperture passed through for pintle 7, so
Before use, rotation retaining ring 9 makes elliptical aperture and elliptoid 7 face of pintle, the i.e. long axis view of the long axis of elliptical aperture and pintle 7
In on same straight line, pintle 7 is enabled to pass through elliptical aperture.
In use, syringe needle 1 is inserted into flask for medicinal preparations, it is located at syringe needle 1 in medical fluid, then pulls out pressure handle 11, and needle
Stable pressure range is maintained between 3 inside of cylinder and medical fluid, when piston 4 moves out, negative pressure, medicine can be generated in syringe 3
Liquid enters in syringe 3 under the action of negative pressure.After medical fluid fully enters in syringe 3, retaining ring 9 is rotated by 90 °, ellipse is made
The long axis in hole and the short axle of pintle 7 are located along the same line.Due to offering several bayonets 8 on pintle 7, so working as retaining ring 9
After rotation, retaining ring 9 can be fastened in bayonet 8, so that retaining ring 9 and pintle 7 is connected as an entirety, so at this time at pintle 7
In stationary state.
Generate gas when medical fluid dissolves in syringe 3, make to generate larger pressure in syringe 3, pressure to piston 4 apply compared with
Big thrust, and since pintle 7 is in stationary state, so pintle 7 will not move by biggish power.Simultaneously because
Through-hole is offered in piston 4, through-hole is equipped with waterproof ventilated membrane 5 close to one end of syringe 3, so gas can pass through waterproof and breathable
Film 5 is discharged, and liquid can not pass through waterproof ventilated membrane 5.And due to being equipped with check valve 6 in through-hole, check valve 6 can be by syringe needle 1
It is unidirectionally opened to 7 direction of pintle, so gas can only be flowed from syringe needle 1 to 7 direction of pintle, therefore when pulling pintle 7 in syringe 3
Or negative pressure can be generated, syringe needle can draw medical fluid.
Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence
The effect and patent practicability that the utility model is implemented.This application claims protection scope should be with the content of its claim
Subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (5)
1. a kind of dispensing injector with pin, including syringe, syringe inner sealing is slidably connected the piston with pintle, and pintle is far from living
One end of plug is connected with pressure handle, and syringe is equipped with syringe needle far from one end of pintle, and syringe is equipped with trunnion, feature far from one end of syringe needle
It is: at least offers a through-hole in the piston, through-hole is equipped with waterproof ventilated membrane close to one end of syringe, is equipped in through-hole
Check valve, check valve can unidirectionally be opened by syringe needle to pintle direction；The section of the pintle is in ellipticity, if offering on pintle
Dry bayonet is rotatably connected to the retaining ring that can cooperate with bayonet on trunnion, offer the ellipse passed through for pintle in the middle part of retaining ring
Hole.
2. dispensing injector with pin according to claim 1, it is characterised in that: through-hole there are two being opened up in piston, two through-holes
Axial line relative to piston is symmetrical.
3. dispensing injector with pin according to claim 2, it is characterised in that: offer sliding slot on trunnion, retaining ring is equipped with
With the sliding block of sliding slot cooperation.
4. dispensing injector with pin according to claim 2, it is characterised in that: the material on pintle positioned at bayonet two sides is rubber
Glue.
5. dispensing injector with pin according to claim 2, it is characterised in that: pistons end is in coniform setting, is leaned in syringe
Nearly syringe needle one end is funnel-form compatible with pistons end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820426866.2U CN208372239U (en) | 2018-03-26 | 2018-03-26 | A kind of dispensing injector with pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820426866.2U CN208372239U (en) | 2018-03-26 | 2018-03-26 | A kind of dispensing injector with pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208372239U true CN208372239U (en) | 2019-01-15 |
Family
ID=64975350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820426866.2U Expired - Fee Related CN208372239U (en) | 2018-03-26 | 2018-03-26 | A kind of dispensing injector with pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208372239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112603308A (en) * | 2020-12-17 | 2021-04-06 | 重庆市公共卫生医疗救治中心 | Blood drawing device for preventing AIDS cross infection |
-
2018
- 2018-03-26 CN CN201820426866.2U patent/CN208372239U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112603308A (en) * | 2020-12-17 | 2021-04-06 | 重庆市公共卫生医疗救治中心 | Blood drawing device for preventing AIDS cross infection |
| CN112603308B (en) * | 2020-12-17 | 2022-10-04 | 重庆市公共卫生医疗救治中心 | Blood drawing device for preventing AIDS cross infection |
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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: 20190115 |