Low-temperature extraction device for brain tissue in specific area

Abstract

The invention discloses a specific area brain tissue low-temperature extraction device, which comprises a box body, an upper cover and a placement shell, the upper cover is fixedly connected to one side of the surface of the box body, the placement shell is fixedly connected to the inner bottom of the box body, a cooling assembly is arranged on one side of the surface of the box body, and a slicing assembly is arranged on the surface of the cooling assembly. The cooling assembly is used for reducing the temperature during brain tissue extraction, the slicing assembly is used for slicing the brain according to requirements, slicing of different thicknesses can be carried out according to the requirements so that a needed area can be dug subsequently, the cooling assembly and the slicing assembly are designed in a linkage mode, the cooling assembly can synchronously drive the slicing assembly to operate, and therefore the brain tissue extraction efficiency is improved. The cooling assembly and the slicing assembly cooperate with each other to work, the cooling assembly rotates forwards and backwards to cool the brain tissue and fill dry ice, the slicing assembly can automatically adjust the position of a blade according to requirements, the slicing efficiency is higher, and the effect of effectively improving the brain tissue extraction efficiency is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cryogenic extraction of brain tissue, and particularly relates to a cryogenic extraction device for brain tissue in a specific region. Background Technique

[0002] In the fields of neuroscience research, pathological analysis, and neurosurgery teaching, the extraction of brain tissue is a key operation. Traditional methods for extracting brain tissue usually rely on manual operations, such as using tools like scalpels and forceps for separation and extraction. However, this method has many limitations.

[0003] The problems existing in the prior art are as follows: First, manual operation requires extremely high technical skills for operators, who need to have rich experience and fine operation skills. Second, the efficiency of manually extracting brain tissue is low, and the brain tissue is prone to liquefaction and deformation at high temperatures. Third, it is difficult to standardize traditional manual operations, especially the lack of uniformity when extracting certain specific brain regions. Therefore, we propose a cryogenic extraction device for brain tissue in a specific region. Summary of the Invention

[0004] The purpose of the present invention is to provide a cryogenic extraction device for brain tissue in a specific region to solve the problems raised in the above background technique.

[0005] The present invention is implemented as follows. A cryogenic extraction device for brain tissue in a specific region includes a box body, an upper cover, and a placement shell. The upper cover is fixedly connected to one side of the surface of the box body, and the placement shell is fixedly connected to the inner bottom of the box body. A cooling component is arranged on one side of the surface of the box body, and a slicing component is arranged on the surface of the cooling component. The cooling component is used to reduce the temperature during brain tissue extraction, and the slicing component is used to slice the brain according to requirements. On both sides of the middle of the upper surface of the box body, a number of groups of mounting rods are fixedly connected. A torsion spring is sleeved on the surface of each group of mounting rods, and one end of each group of torsion springs is fixedly connected to a placement plate. One end of the lower surface of each group of placement plates is fixedly connected to a pull ring.

[0006] Preferably, the cooling component includes a motor, a limit sleeve, a first connecting rod, and a support plate. The motor is fixedly connected to one end of one side of the surface of the box body, the output end of the motor is fixedly connected to a first rotating rod, the limit sleeve is rotatably connected to the surface of the first rotating rod and is fixedly connected to one side of the surface of the box body, and the first connecting rod is fixedly connected to one side of one end of the first rotating rod body.

[0007] Preferably, a protective shell is rotatably connected to the surface of the first rotating rod. The support plate is fixedly connected to the upper surface of the box body, and two groups of movable rods are fixedly connected to one side of the upper surface of the support plate. Tooth blocks are rotatably connected to the surfaces of the two groups of movable rods, and the two groups of tooth blocks are meshed with each other.

[0008] As a preferred embodiment of the present invention, one side of the two groups of tooth blocks are fixedly connected to a baffle, the upper surface of the box body close to the baffle is fixedly connected to a bracket, the upper surface of the bracket is rotatably connected to a rotating shell, the surface of the rotating shell is fixedly connected to a spring sheet, and the upper surface of the rotating shell is fixedly connected to a fixing rod.

[0009] As a preferred embodiment of the present invention, a fan is fixedly connected inside one end of the fixing rod, a second connecting rod is fixedly connected to the upper surface of the fan, and a push plate is rotatably connected between the second connecting rod and the first connecting rod.

[0010] As a preferred embodiment of the present invention, the slicing assembly includes a first bevel gear, a rectangular plate, a second bevel gear and a lifting plate, the first bevel gear is fixedly connected to one end of the surface of the first rotating rod, the second bevel gear is meshingly connected to the surface of the first bevel gear, a vertical plate is fixedly connected to one side of the upper surface of the box body, and circular gears are provided on one side of the vertical plate and the second bevel gear.

[0011] As a preferred embodiment of the present invention, a chain is commonly connected between the two groups of circular gears, a mounting plate is fixedly connected to one side of the chain, a movable column is fixedly connected to one side of the mounting plate, and the lifting plate is fixedly connected to the inside of the movable column.

[0012] As a preferred embodiment of the present invention, both sides of the lifting plate are slidably connected to limit rods, the rectangular plate is fixedly connected to one end of the lifting plate, both sides of the rectangular plate are fixedly connected to fifth rotating rods, two groups of fifth rotating rod surfaces are rotatably connected to flip plates, and one end of one side of the two groups of flip plate surfaces is fixedly connected to a hinge.

[0013] As a preferred embodiment of the present invention, the two groups of hinge surfaces are fixedly connected to limit blocks, the two groups of limit blocks are commonly movably connected with a first cutter, the two groups of flip plates are commonly movably connected with a second electric push rod, a fourth rotating rod is fixedly connected to one side of the upper surface of the lifting plate, and the surface of the fourth rotating rod is rotatably connected to the first electric push rod.

[0014] As a preferred embodiment of the present invention, a third rotating rod is rotatably connected to one end of the first electric push rod, a bent plate is fixedly connected to the lower surface of the third rotating rod, a second rotating rod is rotatably connected to one end of the bent plate, and the second rotating rod is fixedly connected to the surface of the lifting plate, a second cutter is movably connected to the other side of the bent plate, and the second cutter is slidably connected to the inside of the first cutter.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When in use, place the brain in the middle of the upper surface of the box body. Then start the cooling component. When the cooling component rotates in the reverse direction, it is convenient to place dry ice inside the cooling component. Moreover, the inside of the placement shell is also used for placing dry ice. When the cooling component rotates in the forward direction, it will seal the dry ice placed inside the cooling component, and the cooling component will blow air on the dry ice, so that the cold air on the surface of the dry ice always drifts on the surface of the brain for cooling, keeping the brain tissue always below zero degrees Celsius. At the same time, it will also drive the slicing component to slice the brain, and different thickness slices can be made according to requirements for subsequent extraction of the required area. The cooling component and the slicing component are designed in a linkage manner. The operation of the cooling component will synchronously drive the operation of the slicing component to work together. And the forward and reverse rotations of the cooling component respectively play the roles of cooling the brain tissue and loading dry ice. The slicing component can automatically adjust the position of the blade according to requirements to make the slicing efficiency more efficient. After the brain mold is sliced, pull the pull ring. The pull ring will rotate on the surface of the mounting rod, so that the sliced brain mold will slide into a specific container for extraction. Because the temperature inside the box body is relatively low, the extraction operation is carried out inside the box body. When the required brain mold is taken out, the torsion spring will drive the placement plate to automatically reset;

[0017] In order to stably place the brain mold and provide an operating space for the extraction device with a length of 10 - 20 cm, the dimensions of the operating platform are usually as follows:

[0018] Length: at least 30 - 35 cm. It is necessary to ensure that there is enough space in front of and behind the brain mold for the extraction device to move and operate after it is placed, to avoid the device colliding with the edge of the platform;

[0019] Width: about 25 - 30 cm. Such a width can leave a certain margin on both sides of the brain mold, enabling the extraction device to flexibly enter the brain mold from different angles for cutting and extracting brain tissue;

[0020] Height: generally 70 - 90 cm. This conforms to the ergonomic design, and it is more comfortable for the operator to stand or sit during operation, which can reduce the fatigue caused by long - term operation;

[0021] It achieves the effect of effectively improving the extraction efficiency of brain tissue.

[0022] 2. When the motor runs, it drives the first rotating rod to rotate. Since the push plate is connected between the first connecting rod and the second connecting rod and is in a position deviating from the center of the circle, the rotation of the first connecting rod drives the second connecting rod to rotate through the push plate, thereby driving the fan to rotate. The fixed rod on the surface of the fan drives the rotating shell to rotate on the surface of the bracket. Since this is in the forward rotation state, the inclined surface of the elastic sheet is not blocked by the tooth block, so the fan can rotate normally. When the motor runs in reverse, the fan drives the rotating shell to rotate in reverse, so that the non-inclined surface side of the elastic sheet pushes the tooth block, and the two tooth blocks rotate on the surface of the movable rod respectively, and then drive the two baffles to rotate and open to both sides, facilitating the placement and cleaning of dry ice, achieving the effect of keeping the brain tissue below zero degrees Celsius during the extraction process and improving the extraction efficiency.

[0023] 3. When the first rotating rod rotates, it causes the first bevel gear to drive the second bevel gear to rotate, and then the two circular gears rotate by means of a chain, thereby driving the mounting plate, the movable column and the lifting plate to move up and down. Since the movable column is in a rotating state, the situation of the lifting plate being stuck will not occur, so as to drive the first cutting knife and the second cutting knife to slice the brain. When the second electric push rod runs, it pulls the two turning plates to rotate respectively around the two fifth rotating rods. During the rotation process, it uses the hinge and the limiting block to push the first cutting knife forward. The hinge drives the limiting block to move while rotating, so it will not be stuck. Since the first electric push rod can rotate on the surfaces of the fourth rotating rod and the third rotating rod, when the first electric push rod runs, the bent plate rotates around the second rotating rod, and the bent plate can push the second cutting knife to move inside the first cutting knife. The use of the first cutting knife and the second cutting knife achieves the effect of being able to slice the brain into multiple slices with different thicknesses according to requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram provided by the embodiment of the present invention;

[0025] Figure 2 is the upper cover structural schematic diagram provided by the embodiment of the present invention;

[0026] Figure 3 is the partial structural schematic diagram provided by the embodiment of the present invention;

[0027] Figure 4 is the motor structural schematic diagram provided by the embodiment of the present invention;

[0028] Figure 5 is the fan structural schematic diagram provided by the embodiment of the present invention;

[0029] Figure 6 is the second cutting knife structural schematic diagram provided by the embodiment of the present invention;

[0030] Figure 7 It is a schematic structural diagram of the second electric push rod provided by an embodiment of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the flip plate provided by an embodiment of the present invention;

[0032] Figure 9 It is a schematic structural diagram of the placement shell provided by an embodiment of the present invention;

[0033] Figure 10 It is a schematic structural diagram of the placement plate provided by an embodiment of the present invention.

[0034] In the figure: 1, box body; 2, upper cover; 3, placement shell; 4, slicing assembly; 401, first bevel gear; 402, second bevel gear; 403, circular gear; 404, vertical plate; 405, chain; 406, mounting plate; 407, movable column; 408, lifting plate; 409, limiting rod; 410, second rotating rod; 411, bent plate; 412, third rotating rod; 413, first electric push rod; 414, fourth rotating rod; 415, first cutter; 416, rectangular plate; 417, second electric push rod; 418, second cutter; 419, fifth rotating rod; 420, hinge; 421, limiting block; 422, flip plate; 5, cooling assembly; 501, motor; 502, limiting sleeve; 503, protective shell; 504, first rotating rod; 505, first connecting rod; 506, push plate; 507, second connecting rod; 508, fan; 509, support plate; 510, fixed rod; 511, bracket; 512, rotating shell; 513, elastic sheet; 514, movable rod; 515, tooth block; 516, baffle; 6, mounting rod; 7, torsion spring; 8, placement plate; 9, pull ring. Detailed implementation manners

[0035] In order to further understand the content, features and effects of the present invention, the following embodiments are cited and described in detail in conjunction with the accompanying drawings.

[0036] The structure of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] As Figures 1 to 10As shown in the figure, a low-temperature extraction device for brain tissue in a specific area provided by an embodiment of the present invention includes a box body 1, an upper cover 2, and a placement shell 3. The upper cover 2 is fixedly connected to one side of the surface of the box body 1, and the placement shell 3 is fixedly connected to the inner bottom of the box body 1. A cooling component 5 is arranged on one side of the surface of the box body 1, and a slicing component 4 is arranged on the surface of the cooling component 5. The cooling component 5 is used to reduce the temperature during brain tissue extraction, and the slicing component 4 is used to slice the brain according to requirements. On both sides of the middle of the upper surface of the box body 1, a plurality of groups of mounting rods 6 are fixedly connected, and torsion springs 7 are sleeved on the surfaces of the plurality of groups of mounting rods. One end of each of the plurality of groups of torsion springs 7 is fixedly connected to a placement plate 8, and a pull ring 9 is fixedly connected to one end of the lower surface of each of the plurality of groups of placement plates 8.

[0038] Adopting the above scheme: When in use, place the brain on the middle of the upper surface of the box body 1, and then start the cooling component 5. When the cooling component 5 rotates in the reverse direction, it is convenient to place dry ice inside the cooling component 5, and the inside of the placement shell 3 is also used for placing dry ice. When the cooling component 5 rotates in the forward direction, it will seal the dry ice placed inside the cooling component 5, and will cause the cooling component 5 to blow air on the dry ice, so that the cold air on the surface of the dry ice always drifts on the surface of the brain for cooling, keeping the brain tissue always below zero degrees Celsius. At the same time, it will also drive the slicing component 4 to slice the brain, and different thickness slices can be made according to requirements for subsequent excavation of the required area. The cooling component 5 and the slicing component 4 are designed in a linkage manner. The operation of the cooling component 5 will synchronously drive the operation of the slicing component 4 to work together. And the forward and reverse rotation operations of the cooling component 5 respectively play the roles of cooling the brain tissue and loading dry ice. The slicing component 4 can automatically adjust the position of the blade according to requirements, making the slicing efficiency higher. After the brain mold is sliced, pull the pull ring 9, and the pull ring 9 will rotate on the surface of the mounting rod 6, so that the sliced brain mold slides into a specific container for extraction. Because the temperature inside the box body 1 is relatively low, the extraction operation is carried out inside the box body 1. When the required brain mold is taken out, the torsion spring 7 will drive the placement plate 8 to automatically reset;

[0039] In order to stably place the brain mold and provide an operating space for an extraction device with a length of 10 - 20 cm, the dimensions of the operating platform are usually as follows:

[0040] Length: At least 30 - 35 cm. It is necessary to ensure that there is enough space in front of and behind the brain mold for the extraction device to move and operate after it is placed, to avoid the device colliding with the edge of the platform.

[0041] Width: Approximately 25 - 30 cm. Such a width can leave a certain margin on both sides of the brain mold, enabling the extraction device to flexibly enter the brain mold from different angles for cutting and extracting brain tissue.

[0042] Height: Generally between 70 - 90 cm, which conforms to ergonomic design. It is more comfortable for operators to stand or sit and operate, and can reduce the fatigue caused by long-term operation.

[0043] It has achieved the effect of effectively improving the efficiency of brain tissue extraction.

[0044] Reference Figure 4 and Figure 5 Refer to

[0045] Adopting the above solution: When the motor 501 operates, it will drive the first rotating rod 504 to rotate. And since the push plate 506 is connected between the first connecting rod 505 and the second connecting rod 507 and is in a position deviating from the center of the circle, the rotation of the first connecting rod 505 will drive the second connecting rod 507 to rotate by using the push plate 506, thereby driving the fan 508 to rotate. The fixed rod 510 on the surface of the fan 508 will drive the rotating shell 512 to rotate on the surface of the bracket 511. Since this is in the forward rotation state, the inclined surface of the elastic piece 513 will not be blocked by the tooth block 515, so the fan 508 can rotate normally. When the motor 501 runs in the reverse direction, the fan 508 will drive the rotating shell 512 to rotate in the reverse direction, so that the non-inclined surface side of the elastic piece 513 pushes the tooth block 515, causing the two tooth blocks 515 to rotate on the surface of the movable rod 514 respectively, and then driving the two baffle plates 516 to rotate and open to both sides, facilitating the placement and cleaning of dry ice, achieving the effect of keeping the brain tissue below zero degrees Celsius during the extraction process and improving the extraction efficiency.

[0046] Reference Figure 6 、Figure 7 and Figure 8 The slicing assembly 4 includes a first bevel gear 401, a rectangular plate 416, a second bevel gear 402 and a lifting plate 408. The first bevel gear 401 is fixedly connected to one end of the surface of the first rotating rod 504, and the second bevel gear 402 is meshed and connected to the surface of the first bevel gear 401. A vertical plate 404 is fixedly connected to one side of the upper surface of the box body 1, and a circular gear 403 is arranged on one side of the vertical plate 404 and the second bevel gear 402; a chain 405 is commonly connected to the two groups of circular gears 403, and a mounting plate 406 is fixedly connected to one side of the chain 405, and a movable column 407 is fixedly connected to one side of the mounting plate 406, and the lifting plate 408 is fixedly connected to the inside of the movable column 407; both sides of the lifting plate 408 are slidably connected to the limit rod 409, the rectangular plate 416 is fixedly connected to one end of the lifting plate 408, and the fifth rotating rod 419 is fixedly connected to both sides of the rectangular plate 416, and the surfaces of the two groups of the fifth rotating rods 419 are rotating A flip plate 422 is movably connected thereto, and one end of one side of the surface of the two groups of flip plates 422 is fixedly connected to a hinge 420; the surfaces of the two groups of hinges 420 are fixedly connected to a limit block 421, and the first cutter 415 is movably connected between the two groups of limit blocks 421; the second electric push rod 417 is movably connected between the two groups of flip plates 422; a fourth rotating rod 414 is fixedly connected to one side of the upper surface of the lifting plate 408, and the surface of the fourth rotating rod 414 is rotatably connected to the first electric push rod 413; one end of the first electric push rod 413 is rotatably connected to the third rotating rod 412 inside, and the lower surface of the third rotating rod 412 is fixedly connected to a bent plate 411, and one end of the bent plate 411 is rotatably connected to the second rotating rod 410, and the second rotating rod 410 is fixedly connected to the surface of the lifting plate 408, and the other side of the bent plate 411 is movably connected to the second cutter 418 inside, and the second cutter 418 is slidably connected to the inside of the first cutter 415.

[0047] Adopting the above solution: when the first rotating rod 504 rotates, it will cause the first bevel gear 401 to drive the second bevel gear 402 to rotate, and then cause the two sets of circular gears 403 to rotate by means of the chain 405, thereby driving the mounting plate 406, the movable column 407 and the lifting plate 408 to move up and down. Since the movable column 407 is in a rotating state, the lifting plate 408 will not get stuck, thus driving the first cutting knife 415 and the second cutting knife 418 to slice the brain. When the second electric push rod 417 operates, it will pull the two sets of turning plates 422 to rotate respectively around the two sets of fifth rotating rods 419. During the rotation process, it will use the hinge 420 and the limit block 421 to push the first cutting knife 415 forward. The hinge 420 will drive the limit block 421 to move while rotating, so it will not get stuck. Since the first electric push rod 413 can rotate on the surfaces of the fourth rotating rod 414 and the third rotating rod 412, when the first electric push rod 413 operates, it will cause the bent plate 411 to rotate around the second rotating rod 410. The bent plate 411 can push the second cutting knife 418 to move inside the first cutting knife 415. The use of the first cutting knife 415 and the second cutting knife 418 achieves the effect of being able to slice the brain into multiple slices of different thicknesses according to requirements.

[0048] The working principle of the present invention:

[0049] In use, when the motor 501 operates, it drives the first rotating rod 504 to rotate. Since the push plate 506 is connected between the first connecting rod 505 and the second connecting rod 507 and is in a position deviating from the center of the circle, the rotation of the first connecting rod 505 drives the second connecting rod 507 to rotate by using the push plate 506, thereby driving the fan 508 to rotate. The fixing rod 510 on the surface of the fan 508 drives the rotating shell 512 to rotate on the surface of the bracket 511. Since this is in the forward rotation state, the inclined surface of the elastic piece 513 is not blocked by the tooth block 515, so the fan 508 can rotate normally. When the motor 501 runs in reverse, the fan 508 drives the rotating shell 512 to rotate in reverse, so that the non-inclined surface side of the elastic piece 513 pushes the tooth block 515, and the two tooth blocks 515 rotate on the surface of the movable rod 514 respectively, and then drive the two baffles 516 to rotate and open to both sides, facilitating the placement and cleaning of dry ice. When the first rotating rod 504 rotates, it causes the first bevel gear 401 to drive the second bevel gear 402 to rotate, and then the two circular gears 403 rotate by using the chain 405, thereby driving the mounting plate 406, the movable column 407 and the lifting plate 408 to move up and down. Since the movable column 407 is in a rotating state, the lifting plate 408 will not be stuck, so as to drive the first cutting knife 415 and the second cutting knife 418 to slice the brain. When the second electric push rod 417 operates, it pulls the two turnover plates 422 to rotate respectively around the two fifth rotating rods 419. During the rotation process, it uses the hinge 420 and the limiting block 421 to push the first cutting knife 415 forward. The hinge 420 drives the limiting block 421 to move while rotating, so it will not be stuck. Since the first electric push rod 413 can rotate on the surfaces of the fourth rotating rod 414 and the third rotating rod 412, when the first electric push rod 413 operates, the bent plate 411 rotates around the second rotating rod 410. The bent plate 411 can push the second cutting knife 418 to move inside the first cutting knife 415, and the use of the first cutting knife 415 and the second cutting knife 418.

[0050] To sum up: The low-temperature extraction device for brain tissue in a specific area solves the following problems through the structures of the motor 501, the limiting sleeve 502, the protective shell 503, the first rotating rod 504, the first connecting rod 505, the push plate 506, the second connecting rod 507, the fan 508, the support plate 509, the fixing rod 510, the bracket 511, the rotating shell 512, the elastic piece 513, the movable rod 514, the tooth block 515 and the baffle 516. First, manual operation has extremely high technical requirements for operators, who need to have rich experience and fine operation skills. Second, the efficiency of manually extracting brain tissue is low, and the brain tissue is prone to liquefy and deform at higher temperatures. Third, it is difficult to achieve standardization in traditional manual operation, especially the non-uniformity when extracting certain specific brain regions.

[0051] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0052] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature extraction device for brain tissue in a specific area, comprising a box body (1), an upper cover (2) and a placement shell (3), characterized in that: The upper cover (2) is fixedly connected to one side of the surface of the box body (1), the placement shell (3) is fixedly connected to the inner bottom of the box body (1), a cooling component (5) is arranged on one side of the surface of the box body (1), a slicing component (4) is arranged on the surface of the cooling component (5), the cooling component (5) is used to reduce the temperature during brain tissue extraction, the slicing component (4) is used to slice the brain according to requirements, and a plurality of groups of mounting rods (6) are fixedly connected to both sides of the middle of the upper surface of the box body (1). A torsion spring (7) is sleeved on the surface of each group of the mounting rods, one end of each group of the torsion springs (7) is fixedly connected to a placement plate (8), and a pull ring (9) is fixedly connected to one end of the lower surface of each group of the placement plates (8).

2. The cryogenic extraction device for brain tissue in a specific area according to claim 1, wherein: The cooling component (5) includes a motor (501), a limit sleeve (502), a first connecting rod (505) and a support plate (509). The motor (501) is fixedly connected to one end of one side of the surface of the box body (1), the output end of the motor (501) is fixedly connected to a first rotating rod (504), the limit sleeve (502) is rotatably connected to the surface of the first rotating rod (504), and the limit sleeve (502) is fixedly connected to one side of the surface of the box body (1). The first connecting rod (505) is fixedly connected to one side of one end of the body of the first rotating rod (504).

3. The cryogenic extraction device for brain tissue in a specific area according to claim 2, characterized in that: A protective shell (503) is rotatably connected to the surface of the first rotating rod (504). The support plate (509) is fixedly connected to the upper surface of the box body (1). Two groups of movable rods (514) are fixedly connected to one side of the upper surface of the support plate (509). Tooth blocks (515) are rotatably connected to the surfaces of the two groups of movable rods (514), and the two groups of tooth blocks (515) are meshed with each other.

4. The cryogenic extraction device for brain tissue in a specific area according to claim 3, characterized in that: A baffle (516) is fixedly connected to one side of each of the two groups of tooth blocks (515). A support (511) is fixedly connected to the upper surface of the box body (1) near the baffle (516). A rotating shell (512) is rotatably connected to the upper surface of the support (511). A elastic piece (513) is fixedly connected to the surface of the rotating shell (512), and a fixed rod (510) is fixedly connected to the upper surface of the rotating shell (512).

5. The cryogenic extraction device for brain tissue in a specific area according to claim 4, characterized in that: A fan (508) is fixedly connected to the inside of one end of the fixed rod (510). A second connecting rod (507) is fixedly connected to the upper surface of the fan (508). A push plate (506) is rotatably connected between the second connecting rod (507) and the first connecting rod (505).

6. The cryogenic extraction device for brain tissue in a specific area according to claim 2, wherein: The slicing component (4) includes a first bevel gear (401), a rectangular plate (416), a second bevel gear (402) and a lifting plate (408). The first bevel gear (401) is fixedly connected to the surface of one end of the first rotating rod (504). The second bevel gear (402) is meshed with the surface of the first bevel gear (401). A vertical plate (404) is fixedly connected to one side of the upper surface of the box body (1). Circular gears (403) are arranged on one side of the vertical plate (404) and the second bevel gear (402).

7. The cryogenic extraction device for brain tissue in a specific area according to claim 6, characterized in that: A chain (405) is commonly connected between the two groups of circular gears (403) in a transmission manner. A mounting plate (406) is fixedly connected to one side of the chain (405). A movable column (407) is fixedly connected to one side of the mounting plate (406). The lifting plate (408) is fixedly connected to the inside of the movable column (407).

8. The cryogenic extraction device for brain tissue in a specific area according to claim 7, wherein: The lifting plate (408) is slidably connected to limit rods (409) on both sides inside, the rectangular plate (416) is fixedly connected to one end of the lifting plate (408), the rectangular plate (416) is fixedly connected to the fifth rotating rod (419) on both sides inside, the surfaces of the two groups of the fifth rotating rods (419) are rotatably connected to flip plates (422), and one end of one side of the surface of the two groups of the flip plates (422) is fixedly connected to a hinge (420).

9. The cryogenic extraction device for brain tissue in a specific area according to claim 8, characterized in that: The surfaces of the two groups of hinges (420) are fixedly connected to limit blocks (421), the two groups of limit blocks (421) are movably connected to a first cutter (415), the two groups of flip plates (422) are movably connected to a second electric push rod (417), one side of the upper surface of the lifting plate (408) is fixedly connected to a fourth rotating rod (414), and the surface of the fourth rotating rod (414) is rotatably connected to the first electric push rod (413).

10. A cryogenic extraction device for brain tissue in a specific area as described in claim 9, characterized in that: One end of the first electric push rod (413) is internally rotatably connected to a third rotating rod (412), the lower surface of the third rotating rod (412) is fixedly connected to a bent plate (411), one end of the bent plate (411) is internally rotatably connected to a second rotating rod (410), and the second rotating rod (410) is fixedly connected to the surface of the lifting plate (408), and the other side of the bent plate (411) is internally movably connected to a second cutter (418), and the second cutter (418) is slidably connected to the inside of the first cutter (415).

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