CN210228379U - Shock tube experimental device for simulating craniocerebral impact injury of animals - Google Patents
Shock tube experimental device for simulating craniocerebral impact injury of animals Download PDFInfo
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- CN210228379U CN210228379U CN201920428363.3U CN201920428363U CN210228379U CN 210228379 U CN210228379 U CN 210228379U CN 201920428363 U CN201920428363 U CN 201920428363U CN 210228379 U CN210228379 U CN 210228379U
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Abstract
The utility model relates to a shock tube experimental apparatus for simulating animal cranium brain impact injury. The shock tube experimental device comprises a high-pressure gas cylinder, a high-pressure connecting pipe, a driving section, an electromagnetic valve, a driven section, an outlet sliding device and an animal chest and abdomen protection fixing device. The high-pressure gas cylinder is connected with one end of the driving section through a high-pressure connecting pipe, the other section of the driving section is connected with one end of the driven section through an electromagnetic valve, the outlet sliding device is fixed at the other end of the driven section, and the animal chest and abdomen protection fixing device is installed on the outlet sliding device. The shock tube experimental device of the utility model has simple manufacture, convenient operation, low cost, safety and stability; the established animal craniocerebral impact injury experimental model has strong controllability and good repeatability.
Description
Technical Field
The utility model relates to medical research experimental facilities technical field especially relates to a shock tube experimental apparatus for simulating animal cranium brain impact injury.
Background
With the development of technology, weaponry is continuously updated, and highly explosive weapons in modern war are widely applied. Impact injury has become one of the main forms of war injury based on the explosive power of ammunition, and is also the focus of current military medical research. For animal experiment research of craniocerebral impact injury, an animal impact injury model is established by simulating a battlefield impact environment by using shock waves generated by electric detonator explosion or shock tubes. Due to the complexity and high danger of transportation, storage and installation of the electric detonator, the shock tube experimental device becomes the main choice for simulating the craniocerebral impact injury of animals at present.
The shock tube device for animal experiments in China is mainly a BST type biological shock tube designed and developed by the research of the field operations of third military medical science, and the shock tube device obtains shock waves by rapidly releasing shock waves in the air after the shock waves are transmitted to a tube opening, and the pressure at different distances and different positions from the outlet is changed along with the rapid attenuation of the pressure at the outlet of the shock tube. At present, domestic and overseas researches find that the craniocerebral injury is aggravated by the thoracic and abdominal injuries in the impact process, so that the device is not suitable for simulating the simple craniocerebral impact injury. Moreover, the shock tube diaphragm fixing device is complex, and the operation of replacing the diaphragm is complex; the membrane breaking device has strict requirements on the membrane; because the relative position of the small BST biological shock tube outlet and the animal is not fixed, the impact pressure born by the animal in each experimental process can be different, and the experimental repeatability is poor.
Disclosure of Invention
An object of the utility model is to the problem that exists of the above-mentioned shock tube experimental apparatus of current, a novel shock tube experimental apparatus for simulating animal cranium brain impact injury is provided.
The purpose of the utility model can be realized by the following technical scheme:
a shock tube experimental device for simulating craniocerebral impact injury of animals comprises a high-pressure gas cylinder, a high-pressure connecting pipe, a driving section, an electromagnetic valve, a driven section, an outlet sliding device and an animal chest and abdomen protection fixing device. The high-pressure gas cylinder is connected with one end of the driving section through a high-pressure connecting pipe, the other section of the driving section is connected with one end of the driven section through an electromagnetic valve, the outlet sliding device is fixed at the other end of the driven section, and the animal chest and abdomen protection fixing device is installed on the outlet sliding device.
Preferably, the length of the driving section is 0.2-0.5 m, and a pressure gauge is arranged on the driving section.
Preferably, the length of the driven segment is 1.0-1.5 m, and a first pressure sensor is arranged at an outlet.
The outlet sliding device comprises three screw rods, a matched nut and a triangular support, the triangular support comprises three support fixing rings, a connecting rod and a second pressure sensor, and the three support fixing rings are connected with the three screw rods.
Preferably, the bracket fixing ring and the connecting rod as well as the pressure sensor threaded interface and the connecting rod are welded.
Animal chest belly protection fixing device include chest abdomen protection casing, animal head fixed platform and two protection solid fixed rings, chest abdomen protection casing upper end have the semicircle closed plate that circles, chest abdomen protection casing welding the animal head fixed platform lower extreme, animal head fixed platform on be provided with the tooth dead lever, two protection solid fixed rings with the screw rod link to each other.
The utility model discloses the beneficial technological effect who has:
the utility model discloses a shock tube experimental apparatus forms stable and repeatable shock wave with the help of the pressure ratio between the control drive section that the solenoid valve can be accurate and the driven section. The position of the experimental animal away from the outlet of the shock tube can be adjusted through the outlet sliding device, and the pressure born by the animal in each experimental process is ensured to be the same. Utilize animal chest abdomen protector can protect the chest abdomen of impact in-process experimental animals, avoid chest abdomen damage to cause the influence to cranium brain impact injury model. Compared with the prior art, the experimental device is simple to manufacture, convenient to operate, low in cost, safe and stable; the established animal craniocerebral impact injury experimental model has strong controllability and good repeatability.
Drawings
Fig. 1 is a front view of the shock tube experimental apparatus of the present invention.
Fig. 2 is a schematic structural view of the outlet sliding device of the present invention.
Fig. 3 is a schematic view of the triangular bracket structure of the present invention.
Fig. 4 (a) is the structural schematic diagram of the animal chest and abdomen protecting and fixing device of the present invention, fig. 4 (b) is the main view of the animal chest and abdomen protecting and fixing device of the present invention, and fig. 4 (c) is the right view of the animal chest and abdomen protecting and fixing device of the present invention.
Fig. 5 is a schematic view of the connection between the exit slide device and the animal chest and abdomen protection fixing device of the present invention.
Description of reference numerals: 1. a high pressure gas cylinder; 2. a high-pressure connecting pipe; 3. a pressure gauge; 4. a drive section; 5. an electromagnetic valve; 6. a driven segment; 7. a first pressure sensor; 8 an outlet slide; 8-1, screw; 8-2, a nut; 8-3, a bracket fixing ring; 8-4, a second pressure sensor; 8-5, connecting rod; 8-6, triangular bracket; 9. an animal chest and abdomen protection fixing device; 9-1, a chest and abdomen protective cover; 9-2, a closing plate; 9-3, an animal head fixing platform; 9-4, a tooth fixing rod; 9-5, and a protective fixing ring.
Detailed Description
The invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, a shock tube experimental apparatus for simulating animal craniocerebral impact injury, it is including the high-pressure gas cylinder 1 that connects gradually, drive section 4, driven section 6, export slider 8 and animal chest belly protection fixing device 9, high-pressure gas cylinder 1 is connected with the one end of drive section 4 through high-pressure connecting pipe 2, driven section 6 passes through solenoid valve 5 and is connected with the other end of drive section 4, manometer 3 is installed on drive section 4, first pressure sensor 7 is installed in 6 exits of driven section, export slider 8 welds in driven section exit, animal chest belly protection fixing device 9 is installed on export slider 8.
As shown in fig. 2 and 3, the outlet sliding device 8 comprises a screw 8-1, a nut 8-2, a bracket fixing ring 8-3, a second pressure sensor 8-4 and a connecting rod 8-5, the connecting rod 8-5 and the bracket fixing ring 8-3 are welded into a triangular bracket 8-6, the second pressure sensor 8-4 is installed on the triangular bracket 8-6, the triangular bracket 8-6 is installed on the screw 8-1 through the bracket fixing ring 8-3, and the nut 8-2 is used for adjusting the distance between the triangular bracket 8-6 and the outlet of the driven section 6.
As shown in fig. 4, the animal thorax and abdomen protection fixing device 9 comprises a thorax and abdomen protection cover 9-1, a closing plate 9-2, an animal head fixing platform 9-3, a tooth fixing rod 9-4 and a protection fixing ring 9-5, wherein the closing plate 9-2 is fixed at the upper end of the thorax and abdomen protection cover 9-1, the animal head ancient fixing platform 9-3 is welded at the upper end of the thorax and abdomen protection cover 9-1, the tooth fixing rod 9-4 is welded on the animal head fixing platform 9-3, and the protection fixing ring 9-5 is welded on the animal head fixing platform 9-3;
as shown in fig. 5, the outlet slide device 8 fixes the protection fixing ring 9-5 of the animal chest and abdomen protection fixing device 9 on the screw 8-1 through the nut 8-2, so as to complete the connection of the outlet slide device 8 and the animal chest and abdomen protection fixing device 9.
The working principle of the utility model is as follows:
specifically, before the experiment, as shown in fig. 1, a high-pressure gas cylinder 1, a high-pressure connecting pipe 2, a pressure gauge 3, a driving section 4, an electromagnetic valve 5, a driven section 6, a first pressure sensor 7 and an outlet fixing device 8 are sequentially connected, a sealing plate 9-2 is opened, the anesthetized experimental animal is vertically placed into a chest and abdomen protecting cover 9-1, the sealing plate is closed, the neck of the experimental animal is clamped, and the teeth of the experimental animal are hung on a tooth fixing rod 9-4 to finish the protection and fixation of the experimental animal. As shown in fig. 5, the animal chest and abdomen protection fixing device 9 with the experimental animal is arranged on the outlet sliding device 8, and the distance between the animal chest and abdomen protection fixing device 9 and the outlet of the driven section 6 is adjusted through the nut 8-2. In the experimental process, a high-pressure gas cylinder 1 is opened, high-pressure gas enters a driving section 4 through a high-pressure connecting rod 2, when a pressure gauge 3 displays proper pressure, the high-pressure gas cylinder 1 is closed, an electromagnetic valve 5 is opened, the high-pressure gas enters a driven section 6 to form shock waves, the heads of experimental animals on an animal chest and abdomen protection fixing device 9 are impacted, and an animal craniocerebral impact injury model is established. The first pressure sensor 7 records the shock wave pressure at the outlet of the driven section, and the second pressure sensor 8-4 records the shock wave pressure borne by the head of the experimental animal.
The above is a detailed introduction of the shock tube experimental apparatus for simulating craniocerebral impact injury of animals of the present invention, it should be pointed out that the present invention is not limited to the above specific embodiments. Various modifications and changes may be made by those skilled in the art without departing from the principles of the invention, which is intended to be within the scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a shock tube experimental apparatus for simulating animal cranium brain impact injury which characterized in that: it is including the high-pressure gas cylinder (1) that connects gradually, drive section (4), by drive section (6), export slider (8) and animal chest belly protection fixing device (9), high-pressure gas cylinder (1) is connected with the one end of drive section (4) through high pressure connecting pipe (2), the other end that passes through solenoid valve (5) and drive section (4) by drive section (6) is connected, install on drive section (4) manometer (3), first pressure sensor (7) are installed in by drive section (6) exit, export slider (8) welding is in by drive section exit, animal chest belly protection fixing device (9) are installed on export slider (8).
2. The shock tube experimental apparatus of claim 1, wherein: the length of the driving section (4) is 0.2-0.5 m, and the driving section is provided with a pressure gauge (3).
3. The shock tube experimental apparatus of claim 1, wherein: the length of the driven section (6) is 1.0-1.5 m, and a first pressure sensor (7) is arranged at an outlet.
4. The shock tube experimental apparatus of claim 1, wherein: the outlet sliding device (8) comprises three screw rods (8-1), a matched nut (8-2) and a triangular support (8-6), the triangular support (8-6) comprises three support fixing rings (8-3), a connecting rod (8-5) and a second pressure sensor (8-4), and the three support fixing rings (8-3) are connected with the three screw rods (8-1).
5. The shock tube experimental apparatus of claim 1, wherein: animal chest belly protection fixing device (9) including chest belly protection casing (9-1), animal head fixed platform (9-3) and two protection solid fixed rings (9-5), chest belly protection casing (9-1) upper end have semicircle enclosed plate (9-2) that circles, chest belly protection casing (9-1) welding animal head fixed platform (9-3) lower extreme, animal head fixed platform (9-3) on be provided with tooth dead lever (9-4), two protection solid fixed rings (9-5) link to each other with screw rod (8-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428363.3U CN210228379U (en) | 2019-04-01 | 2019-04-01 | Shock tube experimental device for simulating craniocerebral impact injury of animals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428363.3U CN210228379U (en) | 2019-04-01 | 2019-04-01 | Shock tube experimental device for simulating craniocerebral impact injury of animals |
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| CN210228379U true CN210228379U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920428363.3U Expired - Fee Related CN210228379U (en) | 2019-04-01 | 2019-04-01 | Shock tube experimental device for simulating craniocerebral impact injury of animals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110063809A (en) * | 2019-04-01 | 2019-07-30 | 王春晖 | A kind of shock tube experiment device hurt for simulating animal skull brain pact |
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2019
- 2019-04-01 CN CN201920428363.3U patent/CN210228379U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110063809A (en) * | 2019-04-01 | 2019-07-30 | 王春晖 | A kind of shock tube experiment device hurt for simulating animal skull brain pact |
| CN110063809B (en) * | 2019-04-01 | 2023-11-24 | 王春晖 | Shock tube experimental device for simulating animal craniocerebral impact injury |
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| 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: 20200403 Termination date: 20210401 |