Tree shrew CT or MRI examination body position fixing device
Technical Field
The utility model relates to a tree shrew image inspection field specifically is a body position fixing device of tree shrew CT or MRI inspection.
Background
The tree shrew is a small mammal belonging to the order Pandales, has a close relationship with the order primates, and was considered to be a low-grade primate in the past; therefore, the compound is used as an experimental animal and applied to the research in the biomedical field; in recent years, the tree shrew provides a plurality of valuable results for human beings in the researches of immunity, metabolism, tumor, virus infection and the like, and is a promising experimental animal.
Imaging (CT, MRI) can non-invasively acquire the physiological and pathological change conditions in the body of the examined object; is a common means for observing experimental animals. In the study of disease models, it is often necessary to perform multiple CT or MRI examinations on model animals in order to obtain the evolution of the disease over the course of the disease. Whether the experimental animals are compared by themselves or among the animals, if the consistent posture can be kept when CT or MRI shooting is carried out, the comparability of the result is greatly improved and the reliability of the image data is improved; otherwise, the CT or MRI image layer is dislocated, which increases the difficulty of reading the image and reduces the accuracy of the result.
The tree shrew is a novel experimental animal, and no related device for fixing the posture of the tree shrew exists at present; in addition, the reactivity of the tree shrews to the anesthetic, the anesthesia effective time, the awakening time and the like are not systematically researched, the awakening action is avoided during long-time scanning and shooting, the image is subjected to artifact and cannot be read, the secondary anesthesia in the reexamination process not only influences the examination progress, but also the body position is difficult to keep consistent with the former body position. In summary, a special posture fixing device is urgently needed to solve the problems in the CT or MRI examination process of the tree shrews.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a body position fixing device for CT or MRI examination of tree shrews, which can conveniently fix the body position of the anesthetized tree shrews comfortably, is suitable for the tree shrews with various body sizes and is convenient for the body position adjustment in the examination process; in addition, when the tree shrew is waken suddenly in the checking process, the tree shrew can be remotely controlled to be subjected to timely and convenient secondary anesthesia.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
a body position fixing device for CT or MRI examination of tree shrews comprises a cambered surface fixing plate, a four-limb body position fixing device and a head body position fixing device;
cambered surface fixed plate:
a side plate is arranged on the cambered surface fixing plate, and an inclined plane plate is arranged on the side plate; the four-limb body position fixing device and the head body position fixing device are detachably fixed on the cambered surface fixing plate;
four limbs position fixing device:
the four-limb body position fixing device comprises a first soft bottom plate and a retractable binding belt structure, wherein the first soft bottom plate is detachably connected with the top surface of the cambered surface fixing plate;
the first soft bottom plate is detachably fixed on the cambered surface fixing plate, the retractable binding belt structure comprises a separated binding belt body and a retractable binding belt buckle, one end of the binding belt body is fixed with the first soft bottom plate, the retractable binding belt buckle is arranged at the other end of the first soft bottom plate, and the other end of the binding belt body is inserted into a buckle hole of the retractable binding belt buckle to realize the matching with the retractable binding belt buckle;
head position fixing device:
the head position fixing device comprises a second soft bottom plate detachably connected with the top surface of the cambered surface fixing plate, a retractable binding belt structure and a head cover; the second soft bottom plate is detachably fixed on the cambered surface fixing plate, the front end of the head cover is provided with an air hole, the rear end of the head cover is provided with elastic cloth, the elastic cloth is provided with an elastic band, and the arrangement positions of the elastic cloth and the elastic band correspond to the positions of the necks of the tree shrews; one end of the belt body of the retractable belt structure is fixed with the elastic band, and the retractable belt buckle of the retractable belt structure is arranged on the second soft bottom plate.
One side of the cambered surface fixing plate is provided with a connecting frame, and a connecting shaft end is arranged on the connecting frame.
A plurality of positioning jacks are arranged on the cambered surface fixing plate; the bottoms of the first soft bottom plate and the second soft bottom plate are provided with press-deformable eye-splice detachably connected with the positioning jack.
The top surface of the cambered surface fixing plate is a smooth top surface, and the bottoms of the first soft bottom plate and the second soft bottom plate are provided with suckers.
The device also comprises a remote control secondary anesthesia device;
remote control secondary anesthesia device:
the remote control secondary anesthesia device comprises a micro push rod motor, a sliding plate, a remote control motor, a thread transmission mechanism, a needle seat and an injector; the miniature push rod motor is arranged on a side plate of the cambered surface fixing plate, and the sliding plate is connected to an inclined plane plate on the side plate in a sliding manner; the plastic push rod of the micro push rod motor (19) corresponds to the lower end of the sliding plate; the circuit of the micro push rod motor is controlled by a remote switch; the lower end of the sliding plate is provided with a vertical baffle plate, and the plastic push rod pushes the vertical baffle plate after the micro push rod motor is electrified so as to push the sliding plate; the remote control motor is fixed at the top of the sliding plate, the top of the sliding plate is also provided with a side bracket, and the side bracket is provided with an upper limit rotating groove; the thread transmission mechanism comprises a transmission stud and a driven nut, the transmission stud is in threaded connection with the side wall of the lower side of the driven nut, the transmission stud is connected with a spindle of a remote control motor, slide bars are arranged on two sides of the driven nut, the slide bars are in sliding connection with a rotation limiting groove, a notch is formed in one side, away from the remote control motor, of the driven nut, the tail end of the stud is arranged in the notch, a needle seat is arranged at the top of a sliding plate, the needle seat is of a soft rubber pad structure, an opening is formed in the top of the needle seat, a needle cylinder of the injector is clamped on the needle seat through the opening, and an injection hole with one; the miniature push rod motor and the remote control motor are sealed through a shielding case shell, the shielding case shell is made of a rare earth polymer matrix composite material, and an electromagnetic shielding film is arranged on the inner surface of the shielding case shell.
Control box and motor case on the curb plate of cambered surface fixed plate, set up control element such as power, integrated control circuit board in the control box, miniature push rod motor sets up in the motor case.
The middle of the bottom of the sliding plate is provided with a sliding block, the inclined plate is provided with a groove rail which is in sliding connection with the sliding block, the rear end of the groove rail is provided with a return spring, and the return spring is connected with the sliding block.
The inclined plane plate is provided with a sliding chute, and two sides of the bottom of the sliding plate are provided with sliding rails which are in sliding connection with the sliding chute.
Contrast prior art, the beneficial effects of the utility model reside in that:
the device can be used for conveniently fixing the anesthetized tree shrew in the body position through the cambered surface fixing plate, and the four-limb body position fixing device and the head body position fixing device can be detachably fixed at any position on the cambered surface fixing plate according to the body type of the tree shrew, so that the device is suitable for tree shrews of various body types. And the connecting shaft end is connected with the main shaft to rotate and adjust the position of the cambered surface fixing plate, so that the body position can be conveniently adjusted in the checking process. In addition, when the tree shrew is waken suddenly in the checking process, the secondary anesthesia device can be remotely controlled, so that the tree shrew can be secondarily anesthetized timely and conveniently.
Drawings
Figure 1 is a using state diagram of the utility model.
Fig. 2 is a schematic structural view of the middle arc surface fixing plate of the present invention.
Fig. 3 is a top view of the middle limb posture fixing device of the utility model.
Fig. 4 is a top view of the middle head position fixing device of the present invention.
Fig. 5 is a schematic view of the buckle structure of the present invention capable of deforming by pressing.
Fig. 6 is a schematic structural view of the arrangement mode of the middle sucker.
Fig. 7 is a schematic structural diagram of the remote-controlled secondary anesthesia apparatus of the present invention.
Fig. 8 is a side view and a partial enlarged view of the remote-controlled secondary anesthesia apparatus of the present invention.
Reference numerals shown in the drawings:
1. a cambered surface fixing plate; 2. a limb position fixing device; 3. a head position fixing device; 4. a side plate; 5. an inclined plane plate; 6. a first soft bottom plate; 7. tying a belt body; 8. the binding belt buckle can be removed; 9. a second soft bottom plate; 10. a head cover; 11. air holes are formed; 12. elastic cloth; 13. elastic bands; 14. a connecting frame; 15. connecting the shaft ends; 16. positioning the jack; 17. inserting and buckling; 18. a suction cup; 19. a micro push rod motor; 20. a slide plate; 21. a remote control motor; 22. a needle seat; 23. an injector; 24. a vertical baffle plate; 25. a side bracket; 26. a rotation limiting groove; 27. a drive stud; 28. a driven nut; 29. a slide bar; 30. a notch; 31. an opening; 32. an injection hole; 33. a control box; 34. a motor case; 35. a slider; 36. a groove rail; 37. a return spring; 38. a chute; 39. a slide rail.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
A position fixing device for CT or MRI examination of tree shrew, the main structure comprises a cambered surface fixing plate 1, a four limbs position fixing device 2, a head position fixing device 3 and a remote control secondary anesthesia device.
Cambered surface fixed plate 1:
the cambered surface fixing plate 1 is a toughened glass plate, one side of the cambered surface fixing plate 1 is provided with a connecting frame 14, and the connecting frame 14 is provided with a connecting shaft end 15; the other side of the cambered surface fixing plate 1 is provided with a side plate 4, and the side plate 4 is provided with an inclined plane plate 5. The four limbs position fixing device 2 and the head position fixing device 3 are detachably fixed on the cambered surface fixing plate 1.
There are two embodiments for the cambered surface fixing plate 1:
a plurality of positioning insertion holes 16 are arranged on the first cambered surface fixing plate 1 and the cambered surface fixing plate 1. Correspondingly, the bottoms of the four-limb body position fixing device 2 and the head body position fixing device 3 are provided with a push-deformable insert buckle 17 which is detachably connected with the positioning insertion hole 16, and the structure of the insert buckle is shown in the attached figure 5 of the specification. The inserting buckle 17 penetrates through the positioning insertion hole 16 after being pressed and deformed, then is restored to be clamped at the positioning insertion hole 16 after being loosened, and the fixing of the four-limb body position fixing device 2 and the head body position fixing device 3 on the cambered surface fixing plate 1 is achieved.
And secondly, the top surface of the cambered surface fixing plate 1 is a smooth top surface. Correspondingly, the four limbs position fixing device 2 and the head position fixing device 3 are provided with suction cups 18 at the bottoms, and the structures are shown in the attached figure 6 of the specification. After the positions of the four-limb body position fixing device 2 and the head body position fixing device 3 are determined, the sucker 18 is adsorbed on the top surface of the cambered surface fixing plate 1 to be fixed.
Four limbs position fixing device 2:
the four limbs position fixing device 2 comprises a first soft bottom plate 6 and a retractable bandage structure which are detachably connected with the top surface of the cambered surface fixing plate 1. The first soft bottom plate 6 is detachably connected with the cambered surface fixing plate 1 through two fixing embodiments of a plug-in buckle 17 or a suction cup 18 which can be pressed and deformed. The retractable binding belt structure comprises a separated binding belt body 7 and a retractable binding belt buckle 8, one end of the binding belt body 7 is fixed with the first soft bottom plate 6, the retractable binding belt buckle 8 is arranged at the other end of the first soft bottom plate 6, the other end of the binding belt body 7 is inserted into a buckle hole of the retractable binding belt buckle 8 to realize the matching with the retractable binding belt buckle 8, and the binding belt body 7 is pulled to tighten the limbs of the tree shrew for positioning.
Head position fixing device 3:
the head position fixing device 3 comprises a second soft bottom plate 9 detachably connected with the top surface of the cambered surface fixing plate 1, a retractable binding belt structure and a head cover 10. The second soft bottom plate 9 is detachably connected with the cambered surface fixing plate 1 through two fixing embodiments of a plug-in buckle 17 or a suction cup 18 which can be pressed and deformed. Head-shield 10 front end is equipped with bleeder vent 11, be convenient for the tree shrew to breathe, head-shield 10 rear end is equipped with elasticity cloth 12, be equipped with elastic cord 13 on the elasticity cloth 12, the position that sets up of elasticity cloth 12 and elastic cord 13 is corresponding with the neck position of tree shrew, can move back formula ribbon structure and include the ribbon body 7 of separation and can move back the ribbon and detain 8, ribbon body 7 one end is fixed with elastic cord 13, can move back the ribbon and detain 8 settings on the soft bottom plate 9 of second, the ribbon body 7 other end inserts the knot hole that can move back ribbon and detain 8 and realize and can move back the cooperation that the ribbon detained 8, thereby take up elastic cord 13 taut through dragging the ribbon body 7 of bundle, and then with the head cover of tree shrew location.
Remote control secondary anesthesia device:
the remote-control secondary anesthesia device comprises a micro push rod motor 19, a sliding plate 20, a remote-control motor 21, a thread transmission mechanism, a needle seat 22 and an injector 23.
The micro push rod motor 19 is arranged on the side plate 4 of the cambered surface fixing plate 1, and the sliding plate 20 is connected to the inclined plane plate 5 on the side plate 4 in a sliding mode.
The side plate 4 of the cambered surface fixing plate 1 is also provided with a control box 33 and a motor box 34, control elements such as a power supply, an integrated control circuit board and the like are arranged in the control box 33, the micro push rod motor 19 is arranged in the motor box 34, and a plastic push rod of the micro push rod motor 19 corresponds to the lower end of the sliding plate 20. The circuit of the micro push rod motor 19 is controlled by a remote switch.
The inclined plane board 5 is provided with a sliding chute 38, two sides of the bottom of the sliding board 20 are provided with sliding rails 39 which are connected with the sliding chute 38 in a sliding manner, and the lower end of the sliding board 20 is provided with a vertical baffle 24. When the micro push rod motor 19 is powered on, the plastic push rod pushes the vertical baffle 24 to push the sliding plate 20.
The middle of the bottom of the sliding plate 20 is provided with a sliding block 35, the inclined plate 5 is provided with a groove rail 36 which is connected with the sliding block 35 in a sliding manner, the rear end of the groove rail 36 is provided with a return spring 37, and the return spring 37 is connected with the sliding block 35.
Remote control motor 21 is fixed at slide 20 top, slide 20 top still is equipped with side support 25, limit slot 26 on the side support 25, screw drive mechanism includes drive stud 27 and driven nut 28, drive stud 27 and driven nut 28 downside lateral wall threaded connection, drive stud 27 and remote control motor 21 main shaft are connected, driven nut 28 both sides are equipped with the smooth rod 29, smooth rod 29 and limit slot 26 sliding connection, driven nut 28 keeps away from remote control motor 21 one side and is equipped with notch 30, the terminal setting of double-screw bolt is in notch 30. The needle seat 22 is arranged on the top of the sliding plate 20, the needle seat 22 is of a soft rubber pad structure, an opening 31 is arranged on the top of the needle seat 22, and a needle cylinder of the injector 23 is clamped on the needle seat 22 through the opening 31. An injection hole 32 with one side corresponding to the position of the needle head is arranged on the cambered surface fixing plate 1. When the tree shrew is fixed, the back end of the abdomen of the tree shrew is opposite to the position of the injection hole 32, so that the tree shrew can be used for secondary anesthesia after being waken suddenly. The miniature push rod motor 19 and the remote control motor 21 are sealed through a shielding case shell, the shielding case shell is made of rare earth polymer matrix composite materials, and the rare earth polymer matrix composite materials are ideal materials for shielding diagnosis X rays, so that the device can be used for CT examination; the inner surface of the shell of the shielding case is provided with an electromagnetic shielding film for electromagnetic shielding, so that the device can be used for MRI examination.
The specific use method comprises the following steps:
the first step is as follows: the four limbs and the tail of the anesthetized tree shrew are tightened by using the five four limb body position fixing devices 2, and the head of the tree shrew is not tightened in the hood 10 by using the head body position fixing device 3.
The specific tightening method comprises the following steps:
after the limbs or the tails of the tree shrews are placed on the first soft bottom plate 6, the other ends of the ribbon bodies 7 are inserted into the buckle holes of the removable ribbon buckles 8 to realize the matching with the removable ribbon buckles 8, and the limbs or the tails of the tree shrews are tightened and positioned by pulling the ribbon bodies 7.
After the tree shrew is placed in the head cover 10, the neck of the tree shrew is positioned to correspond to the elastic 12 and the elastic 13. Then the other end of the tie body 7 is inserted into a buckle hole of the removable tie buckle 8 to realize the matching with the removable tie buckle 8, the elastic band 13 is tensioned by pulling the tie body 7, and then the head of the tree shrew is sleeved in the hood 10 to be positioned. The front end of the hood 10 is provided with air holes 11, which is convenient for the tree shrews to breathe. The elastic cloth 12 and the elastic band 13 are arranged to ensure the elasticity and make the tree shrew more comfortable.
The second step is that:
then the four-limb body position fixing device 2 and the head body position fixing device 3 are detachably fixed on the top surface of the cambered surface fixing plate 1 through the insertion buckle 17 or the sucking disc 18 which can be pressed to deform, and the rear end of the abdomen of the tree shrew is opposite to the position of the injection hole 32, so that secondary anesthesia after the tree shrew is awakened suddenly is facilitated.
The third step:
during detection, the connecting shaft end 15 is connected with the main shaft, and the cambered surface fixing plate 1 is rotated and adjusted in position, so that the tree shrew can be adjusted in position.
Attached:
if the tree shrew which is just waken is still in a semi-anesthesia state when the tree shrew is waken in the checking process, the body action amplitude is not large, the detection cannot be influenced, at the moment, the circuit of the miniature push rod motor 19 needs to be remotely controlled to be switched on, the plastic push rod pushes the vertical baffle 24 after the miniature push rod motor 19 is powered on so as to push the sliding plate 20, and the sliding plate 20 overcomes the elasticity of the bottom reset spring 37 in the moving process, so that the non-metal needle of the injector 23 penetrates through the injection hole 32 and penetrates into the abdomen of the tree shrew. And then, the remote control motor 21 is controlled to rotate in a remote control mode, and the slide bar 29 is connected with the rotation limiting groove 26 in a sliding mode to limit the rotation of the driven nut 28, so that when the remote control motor 21 drives the transmission stud 27 to rotate, the driven nut 28 translates along the direction of the rotation limiting groove 26, the piston rod of the injector 23 is pushed, and the anesthetic in the injector 23 is injected into the tree shrew for secondary anesthesia. After the injection is finished, the micro push rod motor 19 rotates reversely to retract the plastic push rod, the sliding plate 20 resets under the action of the reset spring 37 and slides back, and therefore the needle head of the injector 23 is taken out of the abdominal cavity of the tree shrew. Thereby completing the effect of secondary anesthesia.
In conclusion, the device can be used for conveniently fixing the narcotized tree shrews in a comfortable position, and the four-limb position fixing device 2 and the head position fixing device 3 can be detachably fixed at any position on the cambered surface fixing plate 1 according to the body types of the tree shrews, so that the device is suitable for the tree shrews with various body types. And the connecting shaft end 15 is connected with the main shaft to rotate and adjust the position of the cambered surface fixing plate 1, so that the body position can be conveniently adjusted in the checking process. In addition, when the tree shrew is waken suddenly in the checking process, the secondary anesthesia device can be remotely controlled, so that the tree shrew can be secondarily anesthetized timely and conveniently.