CN204158515U - Rat fixator - Google Patents
Rat fixator Download PDFInfo
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- CN204158515U CN204158515U CN201420264063.3U CN201420264063U CN204158515U CN 204158515 U CN204158515 U CN 204158515U CN 201420264063 U CN201420264063 U CN 201420264063U CN 204158515 U CN204158515 U CN 204158515U
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- rat fixator
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Abstract
This utility model provides a kind of rat fixator, comprises the airtight piston barrel and piston with the first opening and the second opening; Described piston barrel has head container cavity and health container cavity; Described first opening is positioned on the end face with one end of described head container cavity of described piston barrel; Described second opening is positioned on the end face with one end of described health container cavity of described piston barrel.Especially, described rat fixator also comprises sealing device, and it is arranged on described second opening part.Because rat fixator is not communicated with the air in the external world, reduce ambient atmosphere to the impact of the aerocolloidal concentration at rat mouth and nose place, the aerosol concentration at mouth and nose place is stablized, and easy to control.
Description
Technical field
This utility model relates to laboratory animal technique for fixing field, particularly relates to a kind of rat fixator; Especially be applicable to suck toxicological experiment.
Background technology
Inhalation toxicology be research can inhalation (inhalatio) body toxic action is occurred, development and the various conditions eliminated, rule and mechanism and to carrying out a science of hazard assessment by inhalation (inhalatio).Its professional research contents mainly contains: the physicochemical property of various material in air; The fundamental biological knowledge of respiratory tract; Inhalation (inhalatio) deposition in vivo and delay and and body in important system, interaction between organ; These interactions how to cause disease to produce.Animal subject in current all kinds of experiment mostly is muroid.
But, existing rat fixator all has through hole, thus causes carrying out in the experiment of rat mouth and nose, ensureing the stable of the aerocolloidal concentration that rat mouth and nose place sucks.
In addition, the volume carrying out the rat of each test is inconsistent and the volume of holder unanimously causes partial rat to be fixed, the dress inadequate aspect of Mus is quick, and rat comfortable not and feces inside holder such as not easily to collect at the problem, is all existing rat fixator Problems existing.
Summary of the invention
an object of the present utility model to provide a kind of airtight rat fixator.
a further object of the present utility model to provide a kind of rat can be quickly mounted fixing rat fixator.
another further object of the present utility model to provide a kind of rat fixator ensureing rat comfortableness.
another further object of the present utility model be to provide a kind of can the rat fixator of rapid collection rat feces.
this utility model provides a kind of rat fixator, it airtight piston barrel comprising piston and have the first opening and the second opening; Described piston barrel has head container cavity and health container cavity; Described first opening is positioned on the end face with one end of described head container cavity of described piston barrel; Described second opening is positioned on the end face with one end of described health container cavity of described piston barrel; Wherein, described rat fixator also comprises: sealing device, and it is arranged on described second opening part.
alternatively, described sealing device comprises end cover and sealing gasket; Described sealing gasket is arranged between described end cover and described piston barrel.
alternatively, described piston is provided with piston push rod; The central position of described end cover has the through hole by described piston push rod; Sealing ring is provided with between the hole wall of described piston push rod and described through hole.
alternatively, outwardly have for the axle sleeve with bar v notch v by piston push rod from the central position of the outer surface of described end cover, it is coaxial with described through hole; The outer surface of described axle sleeve is tapered thread face; Described sealing device also has the wing nut matched with described axle sleeve.
alternatively, the sidewall of described end cover have to its inner outstanding projection; The outer wall of described piston barrel has to its outside outstanding guide block, described guide block has the guiding face guiding described projection movement; Or, the outer wall of described piston barrel has the chute guiding the movement therein of described projection.
alternatively, the sidewall of described end cover is provided with female thread, the outer wall of described piston barrel has the external screw thread with described screw-internal thread fit.
alternatively, in described health container cavity, there is diaphragm plate, entreat position to offer bar hole wherein.
alternatively, have in described health container cavity and be symmetrical arranged the first dividing plate and second partition; Between first dividing plate and two relative edges of second partition, there is spacing.
alternatively, described head container cavity is the tapered shape to described first opening part convergent adapted with the head of rat; Described health container cavity is cylindric.
alternatively, described piston is provided with the curved surface adapted with described rat buttocks and the breach by described rat tail.
rat fixator of the present utility model, owing to adopting the airtight piston barrel of both ends open, is provided with sealing device at the second opening part, to seal rat fixator and ambient atmosphere.Because rat fixator is not communicated with the air in the external world, ensure the seal of rat fixator.
further, rat fixator of the present utility model coordinates due to the tapered thread face of wing nut with the axle sleeve with bar v notch v, with latching ram push rod, thus prevents rat retrogressing.
further, rat fixator of the present utility model, owing to having dividing plate and being positioned at the collecting dung district under dividing plate, is convenient to the collection of rat feces.
further, the piston of rat fixator of the present utility model, owing to having special structure, can ensure the comfortableness of rat.
Accompanying drawing explanation
hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
fig. 1 is the sectional view of the rat fixator according to this utility model embodiment;
fig. 2 is a visual angle schematic diagram of the piston barrel of the rat fixator shown in Fig. 1;
fig. 3 is the schematic diagram at another visual angle of the piston barrel of the rat fixator shown in Fig. 1;
fig. 4 is the schematic diagram at a visual angle of the end cover of the rat fixator shown in Fig. 1;
fig. 5 is the schematic diagram at another visual angle of the end cover of the rat fixator shown in Fig. 1;
fig. 6 is the partial structurtes schematic diagram of the rat fixator according to this utility model embodiment.
Detailed description of the invention
according to hereafter by reference to the accompanying drawings to the detailed description of this utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
fig. 1 is the sectional view of the rat fixator according to this utility model embodiment.As shown in Figure 1, and referring to figs. 2 and 3.Embodiments provide a kind of rat fixator, it comprises the airtight piston barrel 10 and piston 20 with the first opening 11 and the second opening 12.Piston barrel 10 has head container cavity and health container cavity.First opening 11 is positioned on the end face with one end of head container cavity of piston barrel 10, the connection tube be communicated with rat container cavity for the inhalant mouth and nose exposure chamber of insert port nose or aerosol inlet pipe.Second opening 12 is positioned on the end face with one end of health container cavity of piston barrel 10, so that load rat fast and place piston 20.
especially, rat fixator also comprises sealing device, and it is arranged on the second opening 12 place.Sealing device is provided with, to seal rat fixator and ambient atmosphere at the second opening 12 place.Because rat fixator is not communicated with the air in the external world, ensure the air-tightness of rat fixator.Such as, can be applicable to animal mouth and nose and expose experiment, to reduce the impact of ambient atmosphere on the aerocolloidal concentration at rat mouth and nose place, the aerosol concentration at mouth and nose place is stablized, and easy to control.
particularly, sealing device can comprise end cover 30 and sealing gasket 40; Sealing gasket 40 is arranged between end cover 30 and piston barrel 10.As shown in Figure 4 and Figure 5, the sidewall of end cover 30 has to its inner outstanding projection 31.The quantity of projection 31 can be multiple, such as 3 etc.The outer wall of piston barrel 10 has to its outside outstanding guide block 13, the quantity of guide block 13 is consistent with the quantity of projection 31, and guide block 13 has the guiding face 131 guiding projection 31 movement.During installation, rotatory sealing end cap 30, the guiding face 131 that projection 31 againsts guide block 13 moves, gradually press seal pad 40, with fixing and sealing; During dismounting, contrary rotatory sealing end cap 30.By well-known to those skilled in the art, the chute of also bootable projection 31 movement therein on the outer wall of piston barrel 10.Certainly, the sidewall of also salable end cap 30 arranges female thread, the outer wall of piston barrel 10 arranges the external screw thread with screw-internal thread fit.
fig. 6 is the partial structurtes schematic diagram of the rat fixator according to this utility model embodiment.Piston 20 can be provided with the piston push rod 21 for push-and-pull piston 20, be convenient to the movement of piston 20.The central position of end cover 30 has the through hole 32 by piston push rod 21; Sealing ring is provided with between the hole wall of piston push rod 21 and through hole 32.In order to fixed piston push rod is mobile after preventing its location better, outwardly have for the axle sleeve 33 by piston push rod 21 from the central position of the outer surface of end cover 30, it is coaxial with through hole 32; Axle sleeve 33 has bar v notch v, so that the contraction of axle sleeve 33; Sealing device also has the wing nut 50 matched with axle sleeve 33.When rotating wing nut gradually, tapered thread face is tightened up with fixed piston push rod gradually, and it is convenient especially to fix and dismantle, and is also convenient to the movable of piston push rod.
in order to fix rat better, head container cavity is the tapered shape to the first opening 11 place convergent adapted with the head of rat; Health container cavity is cylindric.Piston 20 is provided with the curved surface that adapts with rat buttocks and the breach 22 by rat tail, to improve the comfortableness of rat.
in another one embodiment of the present utility model, in order to prevent rat feces on the impact of rat or experiment, diaphragm plate can be set in health container cavity, bar hole is offered in the central position of diaphragm plate, so that rat accumbency is on diaphragm plate, feces enters the collecting dung district of bottom from bar hole.In a preferred embodiment of the present utility model, have in health container cavity and be symmetrical arranged the first dividing plate 11 and second partition 15; Between first dividing plate 14 and two relative edges of second partition 15, there is spacing; Feces enters the collecting dung district of bottom from the spacing between two edges.Being placed with the waste gas absorption material of rat release in collecting dung district, as active carbon, for preventing the foreign gas such as ammonia, sulfur dioxide, aerocolloidal concentration being affected.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art, under the prerequisite not departing from this utility model principle, any improvements and modifications made also should be considered as protection domain of the present utility model.
Claims (10)
1. a rat fixator, comprises piston and the airtight piston barrel with the first opening and the second opening; Described piston barrel has head container cavity and health container cavity; Described first opening is positioned on the end face with one end of described head container cavity of described piston barrel; Described second opening is positioned on the end face with one end of described health container cavity of described piston barrel; It is characterized in that, described rat fixator also comprises:
Sealing device, it is arranged on described second opening part.
2. rat fixator according to claim 1, is characterized in that, described sealing device comprises end cover and sealing gasket;
Described sealing gasket is arranged between described end cover and described piston barrel.
3. rat fixator according to claim 2, is characterized in that, described piston is provided with piston push rod;
The central position of described end cover has the through hole by described piston push rod;
Sealing ring is provided with between the hole wall of described piston push rod and described through hole.
4. rat fixator according to claim 3, is characterized in that, outwardly have for the axle sleeve with bar v notch v by piston push rod from the central position of the outer surface of described end cover, it is coaxial with described through hole;
The outer surface of described axle sleeve is tapered thread face;
Described sealing device also has the wing nut matched with described axle sleeve.
5. rat fixator according to claim 2, is characterized in that, the sidewall of described end cover has to its inner outstanding projection;
The outer wall of described piston barrel has to its outside outstanding guide block, described guide block has the guiding face guiding described projection movement;
Or, the outer wall of described piston barrel has the chute guiding the movement therein of described projection.
6. rat fixator according to claim 2, is characterized in that, the sidewall of described end cover is provided with female thread, the outer wall of described piston barrel has the external screw thread with described screw-internal thread fit.
7. rat fixator according to claim 1, is characterized in that, has diaphragm plate in described health container cavity, entreats position to offer bar hole wherein.
8. rat fixator according to claim 1, is characterized in that, has and be symmetrical arranged the first dividing plate and second partition in described health container cavity; Between described first dividing plate and two relative edges of described second partition, there is spacing.
9. the rat fixator according to any one of claim 2 to 8, is characterized in that, described head container cavity is the tapered shape to described first opening part convergent adapted with the head of rat; Described health container cavity is cylindric.
10. the rat fixator according to any one of claim 2 to 8, is characterized in that, described piston is provided with the curved surface that adapts with described rat buttocks and the breach by described rat tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264063.3U CN204158515U (en) | 2014-05-22 | 2014-05-22 | Rat fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264063.3U CN204158515U (en) | 2014-05-22 | 2014-05-22 | Rat fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204158515U true CN204158515U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264063.3U Active CN204158515U (en) | 2014-05-22 | 2014-05-22 | Rat fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204158515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725983A (en) * | 2017-03-02 | 2017-05-31 | 中国人民解放军第三军医大学第二附属医院 | Experimental animal fixing device |
-
2014
- 2014-05-22 CN CN201420264063.3U patent/CN204158515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725983A (en) * | 2017-03-02 | 2017-05-31 | 中国人民解放军第三军医大学第二附属医院 | Experimental animal fixing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |