CN206548649U - A kind of rat oral gavage device with sealing piston - Google Patents
A kind of rat oral gavage device with sealing piston Download PDFInfo
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- CN206548649U CN206548649U CN201621286340.6U CN201621286340U CN206548649U CN 206548649 U CN206548649 U CN 206548649U CN 201621286340 U CN201621286340 U CN 201621286340U CN 206548649 U CN206548649 U CN 206548649U
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- sealing piston
- main body
- oral gavage
- rat oral
- moving spring
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Abstract
The utility model discloses a kind of rat oral gavage device with sealing piston, the main body of the rat oral gavage device is hollow elongated tube, there is connector the upper end of main body, closed the lower end of main body, lower end side is provided with the excessive medicine mouthful of an ellipse, back-moving spring is equipped with inside lower end, sealing piston is arranged at back-moving spring top, the sealing piston is cylindrical shape, the diameter of sealing piston is less than the internal diameter of the hollow elongated tube of main body, sealing piston is movably placed in hollow production pipe, and the drift of back-moving spring is more than excessive medicine mouthful to the distance of main body lower end base.The back-moving spring of the utility model design can automatically reset after each gavage, design sealing piston, possess excellent sealing, the easy degree and seal degree of this operation are significantly larger than prior art.Gastric infusion can also continuously be implemented.
Description
Technical field
The utility model patent drug technical field of experiment equipment, especially a kind of experimental animal irrigation stomach device, it is adaptable to real
Test the gastric infusion device with rat.
Background technology
Oral gastric infusion is that medical animal experiment studies most commonly used method of administration.Rat oral gavage administration refers to experiment
During decoction by rat mouth is directly injected into process in rat stomach.This process needs to use rat oral gavage device.It is traditional big
Situations below easily occurs during mouse irrigation stomach device use：First, for insoluble solid drug administration, traditional gastric perfusion needle
The aperture of pipe is too small, and large-grainsize medicine is difficult to pass through, it is impossible to be administered.Second, no sealing device, during gavage easily
Leakage, leakage powder, cause dosage inaccurate.3rd, for low dose of solid drugs, liquid medicine, in order to reduce injection
Device adsorption loss, can be put into gastric perfusion needle, and using fluid pressure inject administration, traditional irrigation stomach device is without sealing device so that this
Planting operation can not be carried out.Patent office related to the present invention point solves this problem, but their problems are as follows：Without complete
The problem of solving leakage, leakage powder, automaticity difference are, it is necessary to reset manual after gastric infusion or manually again every time
Load medicine, inconvenient operation.
The content of the invention
In order to solve existing above-mentioned problem, the utility model uses following technical scheme：.
For up to this purpose, the utility model uses following technical scheme：The main body of the rat oral gavage device is hollow elongated tube, main
There is connector the upper end of body, and the lower end of main body is closed, and lower end side is provided with inside the excessive medicine mouthful of an ellipse, lower end and is equipped with again
Sealing piston is arranged at position spring, back-moving spring top, and the sealing piston is cylindrical shape, and the diameter of sealing piston is less than main body
Hollow elongated tube internal diameter, sealing piston is movably placed in hollow production pipe, and the drift of back-moving spring is more than the medicine mouthful that overflows to master
The distance of body lower end base.
It is preferred that, the main body is made of stainless steel, and the sealing piston uses quality of rubber materials.
It is preferred that, the connector internal diameter matches with syringe nipple, is also fixed close to upper-end part of driving in the main body
It is provided with tabs.
It is preferred that, the hollow elongated tube internal diameter is 1.6mm, and external diameter is 2.0mm, and length is 70mm, and back-moving spring is freely long
Spend for 27mm, sealing piston length is 5mm, the medicine mouthful major axis that overflows is 1.5mm, and short axle is 1.0mm.
The beneficial effects of the utility model are：The back-moving spring of the utility model design can be automatic after each gavage
Reset, design sealing piston, possess excellent sealing, the easy degree and seal degree of this operation are significantly larger than existing skill
Art.Gastric infusion can also continuously be implemented.
Brief description of the drawings
Fig. 1 is a kind of stereogram of rat oral gavage device with sealing piston of the utility model embodiment；
Fig. 2 is a kind of structural representation of rat oral gavage device with sealing piston of the utility model embodiment
Fig. 3 is a kind of A portions internal structure schematic diagram of rat oral gavage device with sealing piston of the utility model embodiment.
Wherein：1- main bodys, 2- connectors, the excessive medicines mouthful of 3-, 4- back-moving springs, 5- sealing pistons, 6- tabs.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
Learnt from Fig. 1 to Fig. 3, the main body 1 of the rat oral gavage device is hollow elongated tube, and hollow elongated tube internal diameter is 1.6mm, external diameter
For 2.0mm, length is 70mm.There is connector 2 upper end of main body 1, and the lower end of main body 1 is closed, and main body 1 uses stainless steel
Into lower end side is provided with the excessive medicine mouthful 3 of an ellipse, and 3 major axis of medicine mouthful that overflow are 1.5mm, and short axle is 1.0mm..It is equipped with inside lower end multiple
Position spring 4, the drift of back-moving spring 4 is 27mm, and sealing piston 5 is arranged at the top of back-moving spring 4, and the length of sealing piston 5 is 5mm,
The sealing piston 5 is the cylindrical shape of quality of rubber materials, and the diameter of sealing piston 5 is less than the internal diameter of the hollow elongated tube of main body 1,
Sealing piston 5 is movably placed in hollow production pipe, the drift of back-moving spring 5 be more than overflow medicine mouthful 3 to the lower end base of main body 1 away from
From.
The internal diameter of connector 2 matches with syringe nipple, is further fixedly arranged in the main body 1 close to upper-end part of driving
Tabs 6.
In use, regarding first in drug condition liquid medicine suction injector for medical purpose syringe, if solid drugs or small
The liquid medicine of dosage can be inputted to the hollow elongated tube of main body 1 by connector 2, because main body 1 has sealing piston 5, medicine
Will not flow down, realize sealed effect.
Irrigation stomach device is slowly inserted in the stomach of rat, reached behind appropriate location, pushing syringe piston.Medicine reaches connection
First 2, continue down to hollow elongated tube, then give the pressure of sealing piston 5, the pressure of sealing piston 5 is transmitted to back-moving spring 4, reset
Spring 4 is pressed down, and sealing piston 5 is also pressed down.When sealing piston 5 is forced into below excessive medicine mouthful 3, medicine is from 3 quilts of excessive medicine mouthful
Release, realize gastric infusion, because back-moving spring 4 loses pressure, resetted, sealing piston 5 returns to normal after administration, be
Sealing state.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
Be confined to this, it is any to be familiar with the people of the technology in the technical scope disclosed by the utility model, the change that can readily occur in or
Replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right
The protection domain asked is defined.
Claims (4)
1. a kind of rat oral gavage device with sealing piston, it is characterised in that the main body of the rat oral gavage device is hollow elongated tube, main body
Upper end have connector, the lower end of main body is closed, and lower end side is provided with inside the excessive medicine mouthful of an ellipse, lower end and is equipped with reset
Sealing piston is arranged at spring, back-moving spring top, and the sealing piston is cylindrical shape, and the diameter of sealing piston is less than main body
The internal diameter of hollow elongated tube, sealing piston is movably placed in hollow production pipe, and the drift of back-moving spring is more than excessive medicine mouthful to main body
The distance of lower end base.
2. a kind of rat oral gavage device with sealing piston as claimed in claim 1, it is characterised in that the main body is using stainless
Steel is made, and the sealing piston uses quality of rubber materials.
3. a kind of rat oral gavage device with sealing piston as claimed in claim 1, it is characterised in that the connector internal diameter with
Syringe nipple matches, and tabs are further fixedly arranged on close to upper-end part of driving in the main body.
4. a kind of rat oral gavage device with sealing piston as claimed in claim 3, it is characterised in that the hollow elongated tube internal diameter
For 1.6mm, external diameter is 2.0mm, and length is 70mm, and back-moving spring drift is 27mm, and sealing piston length is 5mm, and overflow medicine
Mouth major axis is 1.5mm, and short axle is 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621286340.6U CN206548649U (en) | 2016-11-28 | 2016-11-28 | A kind of rat oral gavage device with sealing piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621286340.6U CN206548649U (en) | 2016-11-28 | 2016-11-28 | A kind of rat oral gavage device with sealing piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206548649U true CN206548649U (en) | 2017-10-13 |
Family
ID=60369762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621286340.6U Active CN206548649U (en) | 2016-11-28 | 2016-11-28 | A kind of rat oral gavage device with sealing piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206548649U (en) |
-
2016
- 2016-11-28 CN CN201621286340.6U patent/CN206548649U/en active Active
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