CN217525111U - Animal head fixing mechanism and magnetic resonance equipment - Google Patents

Abstract

The utility model provides an animal head fixed establishment and magnetic resonance equipment, this animal head fixed establishment includes: a base; the first fixing assembly is arranged on the base and comprises a head fixing piece and cheek fixing pieces, and the cheek fixing pieces are adjustably arranged on two sides of the head fixing piece so as to clamp and fix the skull of the animal; the skull fitting piece mounting hole is formed in the head fixing piece and used for fixing the skull fitting piece, the skull of the animal is fixed through the first fixing component, and the adaptability of the animal head can be adjusted according to different animal heads, so that the skull of the animal can be stably fixed.

Description

Animal head fixing mechanism and magnetic resonance equipment

Technical Field

The application relates to the field of life science instruments, in particular to an animal head fixing mechanism and magnetic resonance equipment.

Background

Because the experimental mouse has strong reproductive capacity, short breeding cycle, complete transgenic strains with small body size and mature molecular control, the mouse is often selected as a research object in medical research and is subjected to magnetic resonance imaging to obtain physiological values of the mouse, however, in the past research process, the mouse is often subjected to magnetic resonance imaging operation after anesthesia, but the brain activity of the mouse is influenced by the anesthesia, so ideal experimental data are difficult to obtain; although the head of a mouse can be fixed by the existing head fixing device, the head fixing device cannot be adjusted adaptively for different mice, so that the head of the mouse cannot be stably fixed, and the head of the mouse may slightly swing in the scanning process to influence imaging.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for an improved animal head fixing mechanism and a magnetic resonance apparatus, wherein the animal head fixing mechanism can adapt to different mice, and can stably fix the head of the mouse, so that the magnetic resonance scanning imaging under the non-anesthesia state of the mouse can be performed, and accurate detection data can be obtained.

The utility model discloses some embodiments provide an animal head fixed establishment, this animal head fixed establishment includes: a base; the first fixing assembly is mounted on the base and comprises a head fixing piece and cheek fixing pieces, and the cheek fixing pieces are adjustably mounted on two sides of the head fixing piece to clamp and fix the animal skull; the head fixing piece is provided with a skull attaching piece mounting hole, and the skull attaching piece mounting hole is used for fixing a skull attaching piece.

It can be understood that the skull of the animal is fixed by the first fixing component, and can be adjusted adaptively for different heads of the animal, so that the skull of the animal can be stably fixed.

In some embodiments, the first fixing assembly further comprises an adjusting piece, the base is provided with a waist-shaped hole arranged along the length direction, and the adjusting piece is mounted in the waist-shaped hole and can adjust the position of the adjusting piece along the waist-shaped hole.

It will be appreciated that by providing the adjustment member, the relative position between the first fixing assembly and the base is adjusted by the adjustment member.

In some embodiments, the adjusting member includes an adjusting portion, the adjusting portion defines an adjusting groove, and the free end of the head fixing member is inserted into the adjusting groove, so that the height of the head fixing member can be adjusted by adjusting the depth of the head fixing member inserted into the adjusting groove.

It can be understood that the adjusting groove is formed in the adjusting piece, so that the head fixing piece and the adjusting piece can be enclosed into a closed ring, and the head of the animal can be fixed through the closed ring.

In some embodiments, the adjusting portion is provided with a first locking hole, and the first locking hole is communicated with the mounting groove, and the first fixing assembly further comprises a locking member, and the locking member can penetrate through the first locking hole to lock the head fixing member in the adjusting groove.

It can be understood that the adjusting piece is provided with a plurality of first locking holes so as to adjust the depth of the head fixing piece extending into the mounting piece, and therefore the size of the enclosed circular ring is adjusted.

In some embodiments, two fitting installation parts are convexly arranged on two sides of the head fixing piece, and the two cheek fixing pieces are oppositely installed on the fitting installation parts.

It will be appreciated that by providing a snug mounting to enable the cheek mount to be mounted, the animal's head can be further secured.

In some embodiments, the attachment mounting portion defines an adjustment aperture therethrough, and the cheek mount is adjustably mounted within the adjustment aperture via a threaded connection.

It can be understood that the adjusting holes are formed in the fitting installation part, so that the cheek fixing piece can be adjustably installed in the adjusting holes, and the cheek fixing piece can be adapted to heads of different animals to be adjusted.

In some embodiments, the middle of the skull fitting part is provided with an adapting groove adapted to the skull of the animal, and the skull fitting part can be pre-fixed on the skull of the animal.

It can be understood that the middle part of the skull jointing part is provided with the adapting groove, so that the contact area between the skull jointing part and the skull of the animal is increased, the fixing effect on the skull of the animal can be improved,

an embodiment of the utility model provides an animal head fixed establishment still, include: a base; and a first fixed component, first fixed component adjustable install in the base, first fixed component includes head mounting, skull rigging piece and cheek mounting, the cheek mounting adjustable install in head mounting both sides, skull rigging piece can fixed mounting in the head mounting.

In some embodiments, the middle of the skull fitting part is provided with a plurality of fitting grooves for fitting skull of animals, and the fitting grooves of each skull fitting part are different in size so as to fit animals of different sizes.

It will be appreciated that by providing a plurality of different skull abutments, the animal head securing mechanism can be made to adapt to different animals.

The utility model also provides a magnetic resonance equipment, magnetic resonance equipment includes the scanning cabin as above-mentioned arbitrary animal head fixed establishment, magnetic resonance equipment has the scanning chamber, the scanning cabin can stretch into magnetic resonance equipment's scanning chamber, animal head fixed establishment install in the scanning cabin.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an animal head fixation mechanism provided herein;

fig. 2 is a schematic structural view of an animal head fixing mechanism provided by the present application from another perspective;

FIG. 3 is a schematic structural view of a first mounting assembly of the animal head mounting mechanism provided herein;

FIG. 4 is a mechanism schematic of a second securing component of the animal head securing mechanism provided herein;

fig. 5 is a schematic structural view of the second fixing assembly provided in fig. 4 from another perspective.

Reference numerals: 100. an animal head securing mechanism; 10. a base; 11. a waist-shaped hole; 12. mounting holes; 13. a second locking hole; 14. a fixed part; 20. a first stationary component; 21. a head fixing member; 211. attaching the mounting part; 2111. an adjustment hole; 22. a skull engaging member; 221. a fixing hole; 222. an adaptation groove; 223. a clamping part; 23. a cheek mount; 24. an adjustment member; 241. an adjustment section; 2411. an adjustment groove; 242. an installation part; 243. a first locking hole; 30. a second fixed component; 31. a fixed seat; 311. a telescopic hole; 312. mounting a rod; 313. a third locking hole; 314. a fourth locking hole; 32. a fastener; 321. an engaging portion; 3211. an occlusal orifice; 322. a hinge portion; 33. a pressing member; 331. an arc-shaped notch; 34. a limiting member; 35. an elastic member; 36. a respiratory component; 361. a breathing passage; 362. a breathing groove; 40. and a locking member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, in some embodiments of the present invention, an animal head fixing mechanism 100 is provided, the animal head fixing mechanism 100 includes a base 10 and a first fixing member 20, the first fixing member 20 is installed in the middle of the base 10 for stably fixing the skull of a mouse.

Specifically, the base 10 is substantially in a long strip shape, the two ends of the base 10 are provided with fixing portions 14, the fixing portions 14 are provided with through holes, and the through holes are penetrated by screws so as to fixedly mount the animal head fixing mechanism 100 on the scanning cabin. Set up waist shape hole 11 on the base 10, waist shape hole 11 extends along the length direction of base 10, and specifically, waist shape hole 11 has two, and parallel arrangement is on base 10, and first fixed subassembly 20 is through installing in the position department in waist shape hole 11 to can be through adjusting the relative position of the length direction between first fixed subassembly 20 and the base 10 of the position regulation of first fixed subassembly 20 in waist shape hole.

So set up, through setting up waist shape hole 11 at base 10 to can adjust the position of first fixed subassembly 20 on base 10 according to the actual conditions of mouse, in order to fix the head of mouse.

Further, the first fixing assembly 20 comprises a head fixing piece 21, a cheek abutting piece and an adjusting piece 24, wherein the adjusting piece 24 is detachably mounted on the base 10 and is used for adjusting the position of the first fixing assembly 20 on the base 10 and the position of the head fixing piece 21; the head fixing piece 21 is adjustably mounted on the adjusting piece 24 and used for fixing the head of the mouse; the cheek fitting piece is adjustably mounted to the head fixing piece 21 for abutting against and fixing the cheek of the mouse.

Specifically, the adjusting member 24 is substantially "U" shaped, the adjusting member 24 includes a mounting portion 242 and an adjusting portion 241, the adjusting portion 241 is embodied as two parallel vertical lines of the "U" shape, and the mounting portion 242 is embodied as a connecting portion of the "U" shape connecting the two vertical lines; the mounting portion 242 has a through hole corresponding to the waist-shaped hole 11, and passes through the through hole and the waist-shaped hole by a screw, so that the adjusting member 24 is fixedly mounted to the waist-shaped hole 11 of the base 10 in a screw connection manner, and the adjusting member 24 can be adjusted along the extending direction of the waist-shaped hole 11, i.e. the length direction, so as to adjust the position relationship between the base 10 and the adjusting member 24. In some embodiments, the slotted holes 11 are provided in a step shape for countersunk screws to avoid interference of the exposed screws with the scanning chamber after the adjusting members are fixedly installed, thereby ensuring that the bottom of the base 10 is in flat contact with the scanning chamber.

According to the arrangement, the waist-shaped hole 11 is formed in the base 10 and fixedly connected with the adjusting piece 24 through the waist-shaped hole 11, and the position relation between the base 10 and the adjusting piece 24 is adjusted along the arrangement direction of the waist-shaped hole 11 according to the posture characteristics of the mouse.

Furthermore, the adjusting groove 2411 has been seted up along direction of height to the regulating part 241, the head mounting 21 also is "U" type approximately, two free ends of head mounting 21 can insert in the adjusting groove 2411 of regulating part 24, enclose with regulating part 24 and establish into closed ring form, and the regulating part 241 of regulating part 24 both sides has seted up a plurality of first locking holes 243 respectively, a plurality of first locking holes 243 set up along the direction of seting up of adjusting groove 2411 interval, and first locking holes 243 are linked together with adjusting groove 2411, the installation of head mounting 21 can be followed the degree of depth direction activity of adjusting groove 2411, first fixed subassembly 20 still includes the regulation retaining member, wear to establish different first locking holes 243 through the regulation retaining member, adjust the degree of depth that head mounting 21 stretches into adjusting groove 2411, with the height of adjusting head mounting 21 namely the distance of head mounting 21 with base 10, thereby the different mouse head sizes of adaptation.

So set up, to the mouse of different posture, adjust the degree of depth that head mounting 21 stretched into the mounting groove to adjust head mounting 21 and adjust 24 and enclose the annular size of the closure that establishes, with the skull size that can the different mice of adaptation, make head mounting 21 can stably fix different mouse heads.

It can be understood that the present invention is not limited to the shape of the head fixing member 21 being "U" shape, and in other embodiments, the head fixing member 21 may be a strip shape as long as the head fixing member 21 can be installed in the adjusting groove 2411 of the adjusting member 24, and enclosed with the adjusting member 24 to form a closed figure, so as to fix the mouse head.

In addition, the protruding two laminating installation departments 211 that are equipped with in side of head mounting 21, laminating installation department 211 is roughly rectangular form, laminating installation department 211 sets up towards the cheek part of mouse, and two laminating installation departments 211 set up about head mounting 21's axis plane symmetry, wherein, the adjustment hole 2111 that runs through laminating installation department 211 is seted up to the free end of laminating installation department 211, adjustable the installing in adjustment hole 2111 of cheek mounting 23, and install in the relative setting of cheek mounting 23 of head mounting 21 both sides, specifically, cheek mounting 23 passes through threaded connection fixed mounting spare in the mounting hole 12 of laminating installation department 211, and can be according to the mouse cheek condition of difference, adjust the interval between two cheek mounting 23, thereby can adapt to different mice.

So set up, through setting up adjustable cheek mounting 23 to make the adjustment of pertinence to the mouse of different head conditions, thereby can laminate fixed mouse cheek, further stably fix the mouse.

It can be understood that the present invention is not limited to the attachment mounting portion 242 being integrated with the head fixing member 21, and in other embodiments, the attachment mounting portion 242 is detachably connected with the head fixing member 21, and can be adjusted relative to the head fixing member 21 to adapt to clamp a mouse with different head conditions.

Further, the first fixing member 20 further includes a skull engaging member 22, and the skull engaging member 22 is used for fixing the skull of the mouse. Specifically, skull rigging piece 22 is roughly rectangular form, and skull rigging piece 22 has joint portion 223, and the adaptation groove 222 of adaptation mouse skull radian is seted up at the middle part of joint portion 223, adapts to the skull radian of mouse for the inner wall in adaptation groove 222 can have more contact surfaces with the skull of mouse, and in some embodiments, the inner wall in adaptation groove 222 is the arc surface. In addition, fixing holes 221 are opened at both ends of the skull engaging member 22, and skull engaging member mounting holes for fixing the skull engaging member 22 are correspondingly provided on the head fixing member 21. The skull attachment member mounting hole may be a threaded hole, and the fixing hole 221 is penetrated by a screw, so that the skull attachment member 22 can be fixed to the head fixing member 21 by means of threaded connection, and the skull position can be fixed.

In some embodiments, the skull fitting member 22 has a plurality of fitting grooves 222, and the fitting grooves 222 of each skull fitting member 22 have different sizes, so that animals with different sizes can be fitted.

In use, the skull fastener 22 with the adaptive slot 222 can be matched according to the size of the mouse, the adaptive skull fastener 22 is pre-fixed on the skull of the mouse, and then the skull fastener 22 and the mouse are fixed on the head fixing element 21 together.

In other embodiments, the animal head fixing mechanism 100 further comprises a second fixing component 30, the second fixing component 30 is fixedly installed at the end of the base 10, a fixing area for fixing the teeth of the animal is arranged on the second fixing component 30, the fixing area faces the first fixing component 20, and the position of the fixing area relative to the first fixing component 20 is adjustable.

The second fixing assembly 30 comprises a fixing seat 31, a fastening piece 32 and a pressing piece 33, wherein the fixing seat 31 is adjustably mounted on the base 10 and used for adjusting and mounting the fastening piece 32 and the pressing piece 33; the fastening piece 32 is adjustably mounted on the fixed seat 31 and used for fastening the head of a mouse; the pressing member 33 is rotatably installed to the fastening member 32 for pressing the fastening member 32.

Specifically, the end of the base 10 is provided with a circular mounting hole 12 perpendicular to the base 10, one end of the fixing seat 31 is provided with a mounting rod 312 mutually matched with the circular mounting hole 12, the fixing seat 31 is mounted on the base 10 through the mounting rod 312, the mounting rod 312 can rotate in the mounting hole 12, a second locking hole 13 is further formed in the side surface of the base 10, the second locking hole 13 is communicated with the mounting hole 12, the locking member 40 can be screwed into the second locking hole 13 to lock the fixing seat 31, the fixing seat 31 is substantially square, a through telescopic hole 311 is formed in the side wall of the fixing seat 31 along the length direction of the base 10, the fastening member 32 is provided with a telescopic rod corresponding to the telescopic hole 311, the fastening member 32 is detachably mounted on the fixing seat 31 through the telescopic rod, and the depth of the fastening member 32 inserted into the telescopic hole 311 can be adjusted along the extending direction of the telescopic hole 311, so as to adjust the relative position between the fastening member 32 and the first fixing component 20, the top of the fixing seat 31 is respectively provided with a third locking hole 313 and a fourth locking hole 314, and the third locking hole 313 and the fourth locking hole 314 are communicated with the fastening member 31, and the fastening member 31 are screwed into the fixing hole 314.

With the arrangement, the relative position of the fastener 32 and the first fixing component 20 is adjusted by the matching of the mounting hole 12 and the mounting rod 312 and the matching of the telescopic rod and the telescopic hole 311, so that the adaptability adjustment can be performed according to the actual condition adjustment of the mouse.

It can be understood that the utility model discloses do not restrict the fixed mode locking through retaining member 40 between the cooperation of mounting hole 12 and installation pole 312 and the telescopic link, in other embodiments, can also be through the mode at the inside inflation piece that sets up of installation pole 312 and telescopic link, remove to preset the position at installation pole 312 and telescopic link, through the inflation of preset inflation piece for the outer wall butt flexible hole 311 of installation pole 312 and telescopic link and the inner wall of mounting hole 12, in order to realize fixedly.

Furthermore, the fastener 32 is provided with an engaging portion 321 at an end close to the first fixing component 20, the engaging portion 321 is substantially rectangular, the end of the engaging portion 321 opposite to the first fixing component 20 is arc-shaped, and a through engaging opening 3211 is formed in the thickness direction, so that the teeth of the mouse can be engaged with the engaging opening 3211; the middle part of the fastener 32 is provided with a hinge part 322 from a position far away from the base 10, the pressing piece 33 is approximately shaped like a Chinese character '7', the free end of the vertical part of the pressing piece 33 in the shape of the Chinese character '7' is hinged to the hinge part 322, and the free end of the horizontal part of the pressing piece 33 in the shape of the Chinese character '7' presses the occlusal opening 3211, so that the jaw bone part of the mouse can be pressed.

In this way, by providing the engagement between the occlusion port 3211 and the pressing tool 33, the teeth of the mouse are occluded in the occlusion port 3211 and then the pressing tool 33 is engaged with the jaw bone of the mouse, thereby further fixing the head of the mouse.

It should be understood that the present invention is not limited to the shape of the pressing member 33, and in other embodiments, the pressing member 33 may be configured to be a long bar, so long as the pressing member 33 can press and buckle the mouse jaw bone at the occlusion 3211.

It should be noted that, in order to facilitate the fastening of the mouse, the arc-shaped notch 331 is formed in the position of the pressing part 33 corresponding to the fastening corresponding to the jaw bone of the mouse, so that when the jaw bone is pressed by the pressing part 33, the jaw bone of the mouse can be protected, and stimulation to the mouse is avoided.

In addition, in order to enable the pressing member 33 to continuously press the mouse when the mouse is subjected to the magnetic resonance operation, the second fixing assembly 30 further includes a limiting member 34, and the limiting member 34 connects the pressing member 33 and the fastening member 32 and limits a movable range of the pressing member 33.

Specifically, the pressing member 33 is provided with a through connection hole along the thickness direction, the fastening member 32 is provided with a limit hole corresponding to the connection hole, the limiting member 34 is inserted into the connection hole and mounted on the limit hole of the fastening member 32, and the limiting member 34 and the pressing member 33 are abutted against each other to limit the swing range of the pressing member 33. In some embodiments, the limiting member 34 is screwed into the limiting hole, and the contact force between the pressing member 33 and the mouse jawbone is adjusted by adjusting the height of the screw connection.

In this way, the stopper 34 is provided to limit the swing range of the pressing member 33, so that the pressing member 33 always presses the jaw bone of the mouse to fix the head of the mouse.

It should be noted that the present invention is not limited to the limitation of the swing range of the pressing member 33, and in other embodiments, the pressing member 33 and the fastening member 32 may be provided with a buckle that is engaged with each other, so that the pressing member 33 and the fastening member 32 are relatively fixed by the buckle, thereby limiting the swing of the frame pressing member 33.

Furthermore, in order to enable the pressing member 33 to actively release the pressing after the limiting member 34 is released, the utility model also provides an elastic member 35, the elastic member 35 is sleeved on the limiting member 34, one end of the elastic member 35 abuts against the pressing member 33, the other end abuts against the buckling member 32, the pressing member 33 always moves towards the direction far away from the buckling member 32 under the elastic action of the elastic member 35, so that after the elastic member 35 is contacted, the pressing member 33 is far away from the buckling member 32 under the action of the elastic member 35, thereby releasing the buckling on the mouse jaw bone; preferably, the elastic member 35 is provided as a spring.

With this arrangement, the elastic member 35 is provided, so that the pressing member 33 always tends to move away from the fastener 32 under the action of the elastic member 35.

Further, the second fixing component 30 further includes a breathing component 36, the breathing component 36 is substantially rectangular, the breathing component 36 is provided with a through breathing channel 361, the breathing component 36 is further provided with a breathing groove 362, the breathing groove 362 extends along the thickness direction of the breathing component 36, the inner wall of the breathing groove 362 is arc-shaped and is adapted to the mouth of the mouse, in addition, the breathing groove 362 is communicated with the breathing channel 361, and the mouth of the mouse can approach or extend into the breathing groove 362, so as to provide breathing gas and/or anesthetic gas for the mouse;

in some embodiments, the securing mechanism of the animal's head may be secured by:

firstly, before fixation, in order to ensure that the skull adhesive part 22 can realize good pre-fixation of the skull of the mouse, the skin part of the head of the mouse needs to be cut off, the skull is completely exposed, then muscle tissues attached to the skull are extracted, then the muscle tissues are wiped by physiological saline, then the skull adhesive part 22 is attached and installed to the skull of the mouse, the muscle tissues are coated between the skull adhesive part 22 and the skull of the mouse through dental cement (polymethyl methacrylate), and after the dental cement is hardened, the skull adhesive part 22 and the skull of the mouse are fixedly connected with each other.

Then, the through holes at both ends of the skull mount 22 are penetrated by screws to fixedly mount the skull mount 22 to the head mount 21, and the height of the head mount 21 is adjusted by adjusting the depth of the head mount 21 inserted into the adjusting groove 2411, thereby adaptively fixing the head of the mouse.

Then, by adjusting the cheek holders 23 attached to the attachment portions 211, the cheek holders 23 can clamp the cheeks of the mouse, thereby fixing the position of the head of the mouse.

Finally, in some embodiments, the head of the mouse can be further stably fixed by adjusting the position of the fastener 32 in the telescopic hole 311 to fasten the jaw bone portion of the mouse to the occlusion port 3211 and by locking the stopper 34 to allow the pressing member 33 to press the jaw bone portion of the mouse.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. An animal head fixation mechanism comprising:

a base (10); and

the first fixing assembly (20), the first fixing assembly (20) is installed on the base (10), the first fixing assembly (20) comprises a head fixing piece (21) and a cheek fixing piece (23), and the cheek fixing piece (23) is adjustably installed on two sides of the head fixing piece (21) to clamp and fix the skull of the animal; the head fixing piece (21) is provided with a skull attaching piece mounting hole which is used for fixing the skull attaching piece (22).

2. The animal head fixing mechanism according to claim 1, characterized in that the first fixing component (20) further comprises an adjusting member (24), the base (10) is provided with a waist-shaped hole (11) arranged along the length direction, the adjusting member (24) is mounted on the waist-shaped hole (11), and the position of the adjusting member (24) can be adjusted along the waist-shaped hole (11).

3. The animal head fixing mechanism according to claim 2, wherein the adjusting member (24) comprises an adjusting portion (241), the adjusting portion (241) is opened with an adjusting groove (2411), the free end of the head fixing member (21) is inserted into the adjusting groove (2411), so that the height of the head fixing member (21) can be adjusted by adjusting the depth of the head fixing member (21) inserted into the adjusting groove (2411).

4. The animal head fixing mechanism according to claim 3, wherein the adjusting portion (241) is provided with a first locking hole (243), and the first locking hole (243) is communicated with the adjusting slot (2411), the first fixing assembly (20) further comprises an adjusting locking member, and the adjusting locking member can penetrate through the first locking hole (243) to lock the head fixing member (21) in the adjusting slot (2411).

5. The animal head fixing mechanism according to claim 1, wherein two fitting installation parts (211) are convexly arranged on two sides of the head fixing member (21), and the two cheek fixing members (23) are oppositely arranged on the fitting installation parts (211).

6. The animal head fixing mechanism according to claim 5, wherein the fitting mounting portion (211) is opened with an adjusting hole (2111) therethrough, and the cheek fixing piece (23) is adjustably mounted in the adjusting hole (2111) by screw connection.

7. The animal head fixing mechanism according to claim 1, characterized in that the middle of the skull engaging member (22) defines an engaging groove (222) for engaging the skull of the animal, and the skull engaging member (22) can be pre-fixed to the skull of the animal.

8. An animal head fixation mechanism comprising:

a base (10); and

a first fixed subassembly (20), first fixed subassembly (20) adjustable install in base (10), first fixed subassembly (20) include head mounting (21), skull rigging piece (22) and cheek mounting (23), cheek mounting (23) adjustable install in head mounting (21) both sides, skull rigging piece (22) can fixed mounting in head mounting (21).

9. The animal head fixing mechanism according to claim 8, characterized in that the middle of the skull engaging member (22) defines an engaging groove (222) for engaging the skull of the animal, the skull engaging member (22) has a plurality of engaging grooves (222), and the engaging groove (222) of each skull engaging member (22) is different in size for engaging animals of different sizes.

10. A magnetic resonance apparatus, characterized in that the magnetic resonance apparatus comprises a scan bay and an animal head fixation mechanism as claimed in any one of the preceding claims 1 to 9, the magnetic resonance apparatus having a scan bore into which the scan bay is extendable, the animal head fixation mechanism being mounted to the scan bay.

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