CN109223239B

CN109223239B - An auxiliary fixation device for taking brains from large animals

Info

Publication number: CN109223239B
Application number: CN201811243063.4A
Authority: CN
Inventors: 李翔; 杨书丽; 李梦云; 司丽芳; 李健
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2018-10-24
Filing date: 2018-10-24
Publication date: 2021-06-18
Anticipated expiration: 2038-10-24
Also published as: CN109223239A

Abstract

The invention relates to the field of biological experiment aids, in particular to an auxiliary fixation device for taking brains from large animals. It includes a chassis, a plurality of clamping mechanisms are arranged on the chassis, and a rotary table is located at the center of the plurality of holding mechanisms on the chassis; the clamping mechanism includes a first telescopic rod vertically fixed on the chassis and a first telescopic rod fixed on the first telescopic The second telescopic rod on the upper end of the rod is provided with a fixing claw at one end of the second telescopic rod close to the rotating table; the rotating table includes a rotating drum, and the rotating drum can be rotatably sleeved on the outer edge of the cylindrical boss vertically fixed on the chassis, and the rotating drum can rotate. The upper end of the cylinder is fixedly provided with a platen, the lower end of the rotating cylinder is fixedly provided with an annular pressure plate, a first pin hole is opened on the pressure plate, a pin shaft is passed through the first pin hole, and a plurality of The second pin hole is matched with the pin shaft to fix the rotating position of the drum. The invention can firmly fix the heads of large animals, thereby realizing the rapid, complete and flexible extraction of organs such as brains, eyes, optic nerves, ears and the like.

Description

Auxiliary fixing device for taking brains of large livestock

Technical Field

The invention relates to the field of auxiliary instruments for biological experiments, in particular to an auxiliary fixing device for taking brains of large livestock.

Background

In biological experiments for studying brain science, large animals, such as cows, horses, donkeys, pigs, etc., are often used as experimental animals for studying brain morphology, brain structure, eyes, optic nerves, ears, etc. Taking the brain, the eye, the optic nerve, the ear and the like required before the research is a key preparation program for researching brain science, and the operation contents comprise dissection, peeling, cutting of head and neck muscles, cutting of the skull, parietal bone, occipital bone, temporal bone, nasal bone and the like for accommodating the brain, stripping of dura mater, separation of the brain, cerebellum, brainstem, pituitary, eye, optic nerve, ear and the like. The head of the livestock needs to be firmly fixed in the experiment so as to facilitate the operation.

However, at present, no suitable fixing device is available, so that multiple persons are often required to cooperate to fix the head of the livestock in the experiment process. On one hand, because the skin of the head of the livestock has smooth hairs, even if the muscle of the head is just smooth after the skin is peeled, the fixation is difficult; on the other hand, many people participate in the operation, often difficult to expose the operation position, difficult to strip skull, difficult to take out organs such as brain, eye, optic nerve, ear, and scissors, bone saw etc. apparatus are difficult to play a role in limited space, often easily injure the experimenter who participates in fixed head, and, also easily destroy organs such as brain, eye, optic nerve, ear that need draw materials, seriously influence the experimental result.

Disclosure of Invention

The invention aims to provide an auxiliary fixing device for taking the brain of a large livestock, which can firmly fix the head of the large livestock and conveniently fix a laboratory table, thereby realizing the quick, complete and flexible taking of organs such as the brain, the eye, the optic nerve, the ear and the like.

In order to solve the technical problems, the invention adopts the technical scheme that: an auxiliary fixing device for taking the brains of the large livestock comprises a chassis, a plurality of clamping mechanisms which are distributed in an annular shape and used for clamping the heads of the large livestock are arranged on the chassis, a rotating table is arranged at the central positions of the plurality of clamping mechanisms on the chassis and used for supporting the heads of the large livestock and avoiding the interference of the clamping mechanisms on the heads of the large livestock in the brain taking operation by driving the heads of the large livestock to rotate; the clamping mechanism comprises a first telescopic rod vertically fixed on the chassis and a second telescopic rod fixed at the upper end of the first telescopic rod, the second telescopic rod is distributed towards the center direction of the rotating table, and a fixed claw is arranged at one end of the second telescopic rod close to the rotating table; the revolving stage includes the rotary drum, and the rotatable cover of rotary drum is established in the outer fringe of the cylinder boss on the vertical fixation chassis, and the fixed platen that is used for supporting the domestic animal head that is equipped with in upper end of rotary drum, the fixed annular clamp plate that is equipped with of lower extreme of rotary drum have seted up first pinhole on the clamp plate, wear to be equipped with the round pin axle in the first pinhole, set up on the chassis a plurality ofly be used for with the second pinhole of round pin axle cooperation in order to fix rotary drum rotational position.

Preferably, the first telescopic rod comprises a first sleeve, a first threaded rod and a first nut, wherein the lower end of the first sleeve is fixed on the chassis, the first threaded rod is sleeved in the first sleeve, the first nut is installed on the first threaded rod in a matched mode, one side, close to the first sleeve, of the first nut is provided with a first annular buckle protrusion, and a first annular buckle groove in rotary fit with the first annular buckle protrusion is formed in the outer wall of the upper end of the first sleeve.

Preferably, the second telescopic link includes that one end is fixed at the second sleeve of first threaded rod upper end, the cover is established at the second threaded rod of the second sleeve other end and is installed the second nut on the second threaded rod in the cooperation, and the second nut is close to telescopic one side of second and is equipped with the second annular buckle arch, be equipped with on the telescopic outer wall of second with the protruding normal running fit's of second annular buckle recess.

Preferably, a diagonal bracing rod is arranged between the first threaded rod and the second sleeve.

Preferably, the number of the clamping mechanisms is four, and the four clamping mechanisms are distributed at equal intervals.

Preferably, a bearing is arranged between the rotary drum and the cylindrical boss, the lower end of the bearing is installed on a bearing seat arranged at the bottom of the cylindrical boss in a matched mode, and a check ring used for compressing the upper end of the bearing is installed on the upper portion of the cylindrical boss in a matched mode.

Preferably, the outer edge of the annular pressure plate is provided with an ear plate, and the first pin hole is formed in the ear plate.

Preferably, the upper plate surface of the bedplate is a frosted surface.

Preferably, a plurality of suckers for fixing the chassis on the test bed are arranged on the bottom surface of the chassis at intervals.

Advantageous effects

The fixing equipment for taking the brains of the large livestock, provided by the invention, has the advantages of simple structure, firmness, durability, easiness in cleaning and maintenance, convenience in experimental operation, capability of reducing the workload of a maintainer and effectively avoiding accidental injury of the operator, and higher safety in operation.

The clamping mechanism comprises a first telescopic rod and a second telescopic rod, and the first telescopic rod and the second telescopic rod are telescopic, so that the clamping mechanism can be suitable for fixing the heads of experimental livestock with different shapes and sizes. The revolving stage can drive the domestic animal head and rotate to make the domestic animal head fully expose, avoided getting brain operating process in fixture shelter from the interference that produces the domestic animal head.

Drawings

FIG. 1 is a schematic longitudinal sectional view of the present invention;

FIG. 2 is a partially enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a partially enlarged schematic view of a portion B of FIG. 1;

FIG. 4 is a top view of a platen portion of the present invention;

the labels in the figure are: 1. the telescopic rod comprises a first telescopic rod, 101, a first threaded rod, 102, a first nut, 103, a first sleeve, 104, a first annular buckle groove, 105, a first annular buckle bulge, 2, a second telescopic rod, 201, a second threaded rod, 202, a second nut, 203, a second sleeve, 204, a second annular buckle groove, 205, a second annular buckle bulge, 3, a fixed claw, 4, a diagonal bracing rod, 5, a bedplate, 6, a check ring, 7, a pin shaft, 8, an ear plate, 9, a first pin hole, 10, a second pin hole, 11, a sucker, 12, a chassis, 13, a cylindrical boss, 14, a bearing, 15, a pressing plate, 16 and a rotary drum.

Detailed Description

As shown in fig. 1, the auxiliary fixing device for taking the brain of the large livestock comprises a circular chassis 12 which is horizontally distributed. Four clamping mechanisms for clamping the head of the livestock are arranged on the outer edge of the chassis 12, the four clamping mechanisms are distributed in an annular shape at equal intervals, and the head of the livestock is fixed and clamped in four directions through the four clamping mechanisms. Be equipped with the revolving stage in the central point of chassis 12 and put, the revolving stage is used for placing and supporting the domestic animal head, also can be rotatory in order to avoid fixture to get the interference that produces the domestic animal head in the brain operation through driving the domestic animal head, through the rotation of revolving stage, can make under the initial clamping state the domestic animal head that is sheltered from the part by fixture expose, conveniently get the brain through apparatus such as bone saw and scissors.

Any one of the clamping mechanisms comprises a first telescopic rod 1 vertically fixed on a chassis 12 and a second telescopic rod 2 fixed at the upper end of the first telescopic rod 1, the second telescopic rods 2 are distributed towards the center direction of the rotating platform, and a fixed claw 3 is arranged at one end of the second telescopic rod 2 close to the rotating platform. As the frontal plane of the skull of the animal is approximate to an irregular trapezoid with narrow front and wide back, the invention comprises four fixed claws 3, and all the four fixed claws 3 face to the center of the skull of the animal. After placing the domestic animal head on the revolving stage, at first the length of adjustment first telescopic link 1 makes the fixed mounting be located the central point of domestic animal head direction of height put, then the length of adjustment second telescopic link 2 so that four stationary dog 3 tightly push up around the domestic animal head respectively to it is fixed to carry out the omnidirectional to stabilize centre gripping to the domestic animal head, the operation of getting brain on next step of being convenient for. The experimental livestock can be cattle, horses, donkeys, pigs and the like, and the sizes of the head bones are different due to different animal species and ages, so that the clamping mechanism can adapt to the head bones of the livestock with different sizes and shapes by matching the first telescopic rod 1 and the second telescopic rod 2.

As shown in fig. 2, the first telescopic rod 1 in this embodiment includes a first sleeve 103 fixed at a lower end on the chassis 12, a first threaded rod 101 sleeved in the first sleeve 103, and a first nut 102 mounted on the first threaded rod 101 in a matching manner, a first annular fastening protrusion 105 is disposed on one side of the first nut 102 close to the first sleeve 103, and a first annular fastening groove 104 rotatably matched with the first annular fastening protrusion 105 is disposed on an outer wall of an upper end of the first sleeve 103. First nut 102 rotates through the cooperation of first annular buckle arch 105 and first annular buckle recess 104 and distributes in the upper end of first sleeve 103, and forward or first nut 102 of antiport can make first threaded rod 101 retract or stretch out first sleeve 103, has realized the flexible function of first telescopic link 1 to through the flexible adjustment stationary dog 3 of first telescopic link 1 and the relative height of placing the domestic animal head on the revolving stage.

As shown in fig. 3, the second telescopic rod 2 in this embodiment includes a second sleeve 203 with one end vertically fixed on the upper end of the first threaded rod 101, a second threaded rod 201 sleeved on the other end of the second sleeve 203, and a second nut 202 installed on the second threaded rod 201 in a matching manner, a second annular fastening protrusion 205 is disposed on one side of the second nut 202 close to the second sleeve 203, and a second annular fastening groove 204 rotatably matched with the second annular fastening protrusion 205 is disposed on the outer wall of the second sleeve 203. The second nut 202 is rotationally distributed at one end of the second sleeve 203 far away from the first telescopic rod 1 through the matching of the second annular buckle bulge 205 and the second annular buckle groove 204, the second threaded rod 201 can be retracted into or extended out of the second sleeve 203 by rotating the second nut 202 forward or reversely, and then the mutual matching of the four fixing claws 3 is realized to fix the head of the livestock. The second nut 202 is hexagonal, so that the fixing claw 3 can be rotated by a tool such as a wrench, and the like, so that the fixing stability of the four clamping mechanisms for the head of the livestock is improved. In order to further improve the stability of the present invention, a diagonal bracing rod 4 is further disposed between the first threaded rod 101 and the second sleeve 203.

The rotary table comprises a rotary drum 16, and the rotary drum 16 is rotatably sleeved on the outer edge of a cylindrical boss 13 vertically fixed at the central position of the chassis 12. A bearing 14 is arranged between the rotary drum 16 and the cylindrical boss 13 to improve the flexibility of the rotation of the rotary drum 16, the lower end of the bearing 14 is arranged on a bearing seat arranged at the bottom of the cylindrical boss 13 in a matching way, and a retaining ring 6 used for pressing the upper end of the bearing 14 is also arranged at the upper part of the cylindrical boss 13 in a matching way. The upper end of the rotary drum 16 is fixedly provided with a bedplate 5 for supporting the head of the livestock, and the upper plate surface of the bedplate 5 is a frosted surface, so that the friction force between the bedplate 5 and the head of the livestock can be increased, and the head of the livestock is prevented from sliding on the bedplate 5. An annular pressing plate 15 is fixedly arranged at the lower end of the rotary drum 16, as shown in fig. 4, a protruding ear plate 8 is arranged on the pressing plate 15, a first pin hole 9 is formed in the ear plate 8, a pin shaft 7 penetrates through the first pin hole 9, a plurality of second pin holes 10 used for being matched with the pin shaft 7 to fix the rotary position of the rotary drum 16 are formed in the base plate 12, and the plurality of second pin holes 10 are annularly distributed by taking the center of the pressing plate 15 as the circle center.

In the application process of the invention, firstly, a chassis 12 is fixed on a test bed in an absorption manner through a plurality of suckers 11 arranged on the chassis 12, the head of the livestock is placed in the middle of a bedplate 5, the length of a first telescopic rod 1 in all clamping mechanisms is adjusted to enable four fixing claws 3 to be positioned at the middle positions in the height direction of the head of the livestock, then, the four fixing claws 3 are enabled to extend towards the head bone direction of the livestock and to be tightly contacted by rotating a second nut 202, and a wrench can be adopted to rotate the second nut 202 if necessary. Then the operation of taking the brain by dissection can be carried out. When the dissecting brain-taking operation is interfered by the clamping mechanism, the clamping mechanism can be loosened, the rotary drum 16 is rotated to drive the bedplate 5 and the head of the livestock to rotate to the interference position for eliminating, and finally, the rotary position of the head of the livestock is fixed after the pin shaft 7 passes through the first pin hole 9 and the corresponding second pin hole 10, so that the dissecting brain-taking operation in the next step can be carried out.

Claims

1. An auxiliary fixing device for taking brains from large livestock, characterized in that: it comprises a chassis (12), and on the chassis (12), a plurality of clamping mechanisms that are distributed in a ring shape and used to clamp the heads of livestock are provided A rotary table is provided on the chassis (12) at the center of the plurality of holding mechanisms. The rotary table is used to support the head of the livestock and can drive the head of the livestock to rotate to prevent the clamping mechanism from rubbing the head of the livestock during the brain-taking operation. The interference generated; the clamping mechanism includes a first telescopic rod (1) vertically fixed on the chassis (12) and a second telescopic rod (2) fixed on the upper end of the first telescopic rod (1), the second telescopic rod (2) ) is distributed toward the center of the rotary table, and a fixed claw (3) is provided at one end of the second telescopic rod (2) close to the rotary table; The outer edge of the cylindrical boss (13) is fixed on the chassis (12), the upper end of the rotating drum (16) is fixedly provided with a platen (5) for supporting the head of the livestock, and the lower end of the rotating drum (16) is fixedly provided with A ring-shaped pressing plate (15) is provided with a first pin hole (9) on the pressing plate (15), a pin shaft (7) is pierced through the first pin hole (9), and a plurality of The second pin hole (10) is used for cooperating with the pin shaft (7) to fix the rotational position of the drum (16).

2. An auxiliary fixing device for taking brains from large livestock according to claim 1, characterized in that: the first telescopic rod (1) comprises a first sleeve (103) whose lower end is fixed on the chassis (12) , a first threaded rod (101) sleeved in the first sleeve (103) and a first nut (102) fitted on the first threaded rod (101), the first nut (102) being close to the first sleeve One side of the barrel (103) is provided with a first annular snap protrusion (105), and a first annular snap protrusion (105) is provided on the outer wall of the upper end of the first sleeve (103) to rotate and cooperate with the first annular snap protrusion (105). Annular snap groove (104).

3. An auxiliary fixing device for taking brains from large livestock according to claim 2, characterized in that: the second telescopic rod (2) comprises a second sleeve whose one end is fixed on the upper end of the first threaded rod (101). (203), a second threaded rod (201) sleeved on the other end of the second sleeve (203), and a second nut (202) fitted on the second threaded rod (201), the second nut (202) The side close to the second sleeve (203) is provided with a second annular snap protrusion (205), and the outer wall of the second sleeve (203) is provided with a second annular snap protrusion (205) for rotational cooperation The second annular snap groove (204).

4. An auxiliary fixing device for taking brains from large animals according to claim 3, characterized in that: an oblique-pulled support rod is provided between the first threaded rod (101) and the second sleeve (203) (4).

5 . The auxiliary fixing device for taking brains from large animals according to claim 3 , wherein the number of clamping mechanisms is four, and the four clamping mechanisms are equally spaced and evenly spaced. 6 .

6. An auxiliary fixing device for taking brains from large animals according to claim 1, characterized in that: a bearing (14) is provided between the rotating drum (16) and the cylindrical boss (13), and the bearing ( The lower end of 14) is fitted on the bearing seat opened at the bottom of the cylindrical boss (13), and a retaining ring (6) for pressing the upper end of the bearing (14) is also fitted on the upper part of the cylindrical boss (13).

7. An auxiliary fixing device for taking brains from large animals according to claim 1, characterized in that: an ear plate (8) is provided on the outer edge of the annular pressing plate (15), and the first pin hole (9) Open on the lug plate (8).

8. An auxiliary fixing device for taking brains from large livestock according to claim 1, characterized in that: the upper surface of the platen (5) is set as a frosted surface.

9 . The auxiliary fixing device for taking brains from large animals according to claim 1 , characterized in that: the bottom surface of the chassis ( 12 ) is spaced with a plurality of devices for fixing the chassis ( 12 ) on the test bench. 10 . of suction cups (11).