Brain stereotaxic apparatus capable of adjusting U-shaped seat with multiple degrees of freedom

Abstract

The invention discloses a brain stereotaxic instrument capable of adjusting a U-shaped seat with multiple degrees of freedom, and relates to the technical field of brain stereotaxic instruments. The device specifically comprises a bottom plate, the bottom of the bottom plate is fixedly connected with a foot pad, and the top of the bottom plate is provided with a front-back movement adjusting seat; the brain stereotaxic apparatus capable of adjusting the U-shaped base in the multi-degree-of-freedom mode further comprises a rotation adjusting mechanism used for adjusting the overall Z-axis swing angle of the operation workbench through rotation, the rotation adjusting mechanism is arranged at the top of the bottom plate, a bottom swing center shaft is installed at the top of the rotation platform, a calibration block is arranged at the top of the bottom swing center shaft, and the bottom swing center shaft is connected with the calibration block. The rotating platform is arranged at the top of the bottom plate, a swing angle support is arranged at the top of the rotating adjusting mechanism, and an operating table multi-angle adjusting mechanism is arranged outside the swing angle support; according to the brain stereotaxic instrument with the U-shaped seat capable of being adjusted in multiple degrees of freedom, the purpose of improving the use efficiency of equipment is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of brain stereotaxic instruments, in particular to a brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat. Background Art

[0002] The animal brain stereotaxic apparatus is an important research device in the fields of neural circuit research, neurological diseases (Alzheimer's disease, Huntington's disease, Parkinson's disease), neuropharmacology, etc. It is used for targeted injection, stimulation, destruction, recording and other operations on neural structures.

[0003] In the current brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat, the U-shaped seat operating table is fixed during surgery. After the animal's head is clamped, the position of the head is fixed and cannot be moved; when the clamped position of the head deviates, it cannot be adjusted and needs to be readjusted, which results in cumbersome clamping operations, low surgical efficiency, and large position errors. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat, which specifically comprises:

[0005] A base plate, the bottom of which is fixedly connected with a foot pad, and the top of which is mounted with a forward and backward movable adjustment seat;

[0006] The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat also includes:

[0007] A rotation adjustment mechanism is used to adjust the overall Z-axis swing angle of the operating table by rotation. The rotation adjustment mechanism is arranged on the top of the bottom plate. The rotation adjustment mechanism includes a rotation platform. A bottom swing center axis is installed on the top of the rotation platform. A calibration block is arranged on the top of the bottom swing center axis. When initially adjusting the position of the entire operating table, the position of the operating table is calibrated by aligning the center of the calibration block and moving each axis. The rotation platform is arranged on the top of the bottom plate. A swing angle support is arranged on the top of the rotation adjustment mechanism. The operating table multi-angle adjustment mechanism is arranged on the outside of the swing angle support.

[0008] The three-axis operating mechanism is used to adjust the position of the syringe. The three-axis operating mechanism is arranged outside the forward and backward movable adjustment seat. The three-axis operating mechanism includes a Y-axis wedge seat. A Y-axis dovetail block is arranged on the top of the Y-axis wedge seat. The Y-axis wedge seat is arranged outside the forward and backward movable adjustment seat.

[0009] Preferably, a bottom swing scale is provided on the top of the rotating platform, a bottom swing locking nut is provided inside the rotating platform, a bottom swing knob is provided on the top of the rotating platform, and the overall Z-axis swing angle of the surgical workbench is adjusted by rotating the bottom swing knob, and a gear transmission mechanism is provided at the bottom of the bottom swing knob.

[0010] Preferably, the multi-angle adjustment mechanism of the operating table includes an x-axis swing locking nut and a swing movable seat, an x-axis swing knob is arranged inside the swing movable seat, the swing movable seat is arranged outside the x-axis swing locking nut, and the x-axis swing locking nut is arranged inside the swing angle support.

[0011] Preferably, a forward and backward moving member is disposed inside the swinging movable seat, a worm gear transmission mechanism is disposed outside the forward and backward moving member, and a y-axis swing knob is disposed on the top of the worm gear transmission mechanism.

[0012] Preferably, a y-axis swing scale shaft is arranged outside the worm gear transmission mechanism, a left-right moving seat is arranged outside the y-axis swing scale shaft, a first knob screw is installed outside the left-right moving seat, an up-and-down moving seat is arranged outside the first knob screw, an up-and-down moving seat is arranged inside the up-and-down moving seat, and a U-shaped seat is arranged outside the up-and-down moving knob screw.

[0013] Preferably, a fixing clamp is installed on the outside of the U-shaped seat, a clamping mechanism is provided on the outside of the U-shaped seat, and an ear rod is installed on the inside of the clamping mechanism.

[0014] Preferably, a Y-axis knob screw is arranged inside the Y-axis wedge seat, a first magnetic strip is installed on the top of the Y-axis wedge seat, a first magnetic grating sensor is installed on the top of the Y-axis wedge seat, a first angle adjustment seat is arranged on the top of the Y-axis dovetail block, and a second angle adjustment seat is installed on the top of the first angle adjustment seat.

[0015] Preferably, a Z-axis guide rod is arranged on the top of the second angle adjustment seat, an XZ-axis connecting seat is installed on the outside of the Z-axis guide rod, a second magnetic grating sensor is installed on the outside of the XZ-axis connecting seat, a second magnetic strip is installed on the outside of the XZ-axis connecting seat, and a Z-axis knob screw is arranged on the inside of the XZ-axis connecting seat.

[0016] Preferably, an X-axis guide rod is arranged inside the XZ-axis connecting seat, an X-axis knob screw is arranged inside the XZ-axis connecting seat, a connecting and fixing block is installed outside the X-axis guide rod, and an end clamping circular shaft is installed outside the connecting and fixing block.

[0017] The present invention provides a brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat. It has the following beneficial effects:

[0018] 1. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat can adjust the operating table with six degrees of freedom by setting a rotation adjustment mechanism and a multi-angle adjustment mechanism for the operating table. During surgery, the U-shaped seat operating table is fixed. After the animal's head is clamped, the position of the head has been fixed and cannot be moved; when the clamping position of the head deviates, it cannot be adjusted and the clamping needs to be readjusted, which leads to cumbersome clamping operation, low surgical efficiency, and large position error. Therefore, a rotation adjustment mechanism and a multi-angle adjustment mechanism for the operating table are set to adjust the entire operating table in the Z-axis direction of -10°-10°. At the same time, the U-shaped seat is adjusted around the center point of the x, y, and z axes, front and back, left and right, and up and down. Through gear transmission, worm gear transmission, and screw transmission, the center position can be adjusted with multiple degrees of freedom to avoid the error problem of clamping the animal's head, improve the clamping efficiency, and increase the diversity of operating positions.

[0019] 2. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat adjusts the position of the entire operating table in the Z-axis direction by setting a rotation adjustment mechanism. The adjustment angle is -10°-10°, so that the U-shaped seat can still adjust the angle after clamping the animal, avoiding the situation where the clamping position is not in the center and multiple clamping is required.

[0020] 3. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat adjusts the angle of the U-shaped seat by setting a multi-angle adjustment mechanism for the operating table. During surgery, the U-shaped operating table is fixed. After the animal's head is clamped, the position of the head has been fixed and cannot be moved. Therefore, a rotation adjustment mechanism is set, and an adjustable U-shaped seat is used to replace the traditional fixed U-shaped seat. By twisting the x-axis swing knob, the U-shaped seat can rotate around the X-axis of the ear rod center within an angle of -10°-10°; the swinging movable seat and the front-to-back moving member form a front-to-back moving mechanism, which can make the U-shaped seat move around the ear rod center within a stroke of 0-30mm; the y-axis swing knob and the worm gear transmission mechanism are combined into a rotating drive mechanism around the Y-axis of the operating table center, and by twisting the y-axis swing knob, the U-shaped seat can rotate around the Y-axis of the ear rod center within an angle of -15°-15°, and the rotation to the position has a certain self-locking function; the left-right moving seat and the first knob screw rod form a left-right moving mechanism, which can make the U-shaped seat move around the ear rod center within a stroke of 0-30mm; the up-down moving seat and the up-down moving knob screw rod form an up-down moving mechanism, which can make the U-shaped seat move around the ear rod center within a stroke of 0-30mm. In this way, the U-shaped seat can be adjusted around the x and y axes of the center point, front and back, left and right, and up and down.

[0021] 4. The stereotaxic positioner with a multi-degree-of-freedom adjustable U-shaped seat adjusts the position of the end clamping circular shaft by setting a three-axis manipulation mechanism. The Y-axis wedge seat, the Y-axis dovetail block, the Y-axis knob screw, the first magnetic grating sensor, and the first magnetic stripe form a Y-axis moving device, and the operating arm can be operated to move in the Y-axis direction through the Y-axis knob screw; the Z-axis guide rod, the second magnetic grating sensor, the second magnetic stripe, and the Z-axis knob screw form a Z-axis moving device, and the operating arm can be operated to move in the Z-axis direction through the Z-axis knob screw; the X-axis guide rod, the third magnetic grating sensor, the third magnetic stripe, and the X-axis knob screw form an X-axis moving device, and the operating arm can be operated to move in the X-axis direction through the knob screw; and then the end clamping circular shaft is adjusted in position, and at the same time, the magnetic grating sensor is set to ensure the absolute position accuracy monitoring of the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a side structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the rotary adjustment mechanism of the present invention;

[0025] Figure 4 For the present invention Figure 3 The structural diagram at A in the middle;

[0026] Figure 5 This is a schematic diagram of the structure of the multi-angle adjustment mechanism of the operating table of the present invention;

[0027] Figure 6 For the present invention Figure 5 The structural diagram at B in the middle;

[0028] Figure 7 It is a schematic diagram of the structure of the three-axis control mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of the XZ axis connecting seat structure of the present invention.

[0030] In the figure: 1, bottom plate; 2, foot pad; 3, rotation adjustment mechanism; 31, bottom swing scale; 32, bottom swing center axis; 33, calibration block; 34, rotating platform; 35, bottom swing knob; 36, bottom swing locking nut; 37, gear transmission mechanism; 4, swing angle support; 5, operating table multi-angle adjustment mechanism; 51, x-axis swing locking nut; 52, x-axis swing knob; 53, swing moving seat; 54, forward and backward moving part; 55, y-axis swing knob; 56, worm gear transmission mechanism; 57, y-axis swing scale axis; 58, left and right moving seat; 59, up and down moving seat; 510, up and down moving knob screw; 511, The first knob screw; 512, U-shaped seat; 513, fixing clamp; 514, clamping mechanism; 515, ear rod; 6, forward and backward moving adjustment seat; 7, three-axis operating mechanism; 71, Y-axis wedge seat; 72, Y-axis dovetail block; 73, Y-axis knob screw; 74, first magnetic grating sensor; 75, first magnetic strip; 76, first angle adjustment seat; 77, second angle adjustment seat; 78, Z-axis guide rod; 79, second magnetic grating sensor; 710, second magnetic strip; 711, Z-axis knob screw; 712, XZ-axis connecting seat; 713, X-axis guide rod; 714, connecting fixing block; 715, X-axis knob screw; 716, end clamping circular shaft. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0032] like Figure 1-Figure 8 As shown, the present invention provides a technical solution: specifically comprising:

[0033] A base plate 1, a foot pad 2 is fixedly connected to the bottom of the base plate 1, and a forward and backward movable adjustment seat 6 is installed on the top of the base plate 1;

[0034] The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat also includes:

[0035] The rotation adjustment mechanism 3 is used to adjust the overall Z-axis swing angle of the operating table by rotation. The rotation adjustment mechanism 3 is arranged on the top of the base plate 1. The rotation adjustment mechanism 3 includes a rotating platform 34. A bottom swing center axis 32 is installed on the top of the rotating platform 34. A calibration block 33 is arranged on the top of the bottom swing center axis 32. When the position of the entire operating table is initially adjusted, the position of the operating table is calibrated by aligning the center of the calibration block 33 and moving each axis. The rotating platform 34 is arranged on the top of the base plate 1. A swing angle support 4 is arranged on the top of the rotation adjustment mechanism 3. An operating table multi-angle adjustment mechanism 5 is arranged outside the swing angle support 4. The swing angle support 4 is installed on the top of the rotating platform 34.

[0036] The three-axis operating mechanism 7 is used to adjust the position of the syringe. The three-axis operating mechanism 7 is arranged outside the forward and backward movable adjustment seat 6. The three-axis operating mechanism 7 includes a Y-axis wedge seat 71. A Y-axis dovetail block 72 is arranged on the top of the Y-axis wedge seat 71. The Y-axis wedge seat 71 is arranged outside the forward and backward movable adjustment seat 6.

[0037] Before using the device, adjust the multi-angle adjustment mechanism 5 of the operating table to fix the position of the animal. Then adjust the multi-angle adjustment mechanism 5 or the rotation adjustment mechanism 3 of the operating table according to the position of the bottom swing center axis 32 and the calibration block 33 to make the animal in the center position. Adjust the three-axis manipulation mechanism 7 according to the position of the animal's head to perform experimental operations on the animal.

[0038] A bottom swing scale 31 is provided on the top of the rotating platform 34, and the scale range is -10°-10°. A bottom swing locking nut 36 is provided inside the rotating platform 34. After swinging to a certain angle, the bottom swing locking nut 36 is locked, and the bottom swing locking nut 36 must also be loosened before swinging. A bottom swing knob 35 is provided on the top of the rotating platform 34, and the overall Z-axis swing angle of the operating table is adjusted by rotating the bottom swing knob 35. A gear transmission mechanism 37 is provided at the bottom of the bottom swing knob 35.

[0039] When the angle of the operating table needs to be adjusted, the bottom swing locking nut 36 is manually loosened, and the bottom swing knob 35 is operated to rotate the bottom rotating platform 34 through the gear transmission mechanism 37. The rotation angle range is: -10°-10°, and the swing is driven by gear meshing transmission. After adjusting the position of the rotating platform 34, the bottom swing locking nut 36 is locked.

[0040] The multi-angle adjustment mechanism 5 of the operating table includes an x-axis swing locking nut 51 and a swing movable seat 53, and the swingable angle is -15°-15°. The x-axis swing knob 52 is arranged inside the swing movable seat 53, and the swing movable seat 53 is arranged outside the x-axis swing locking nut 51, and the x-axis swing locking nut 51 is arranged inside the swing angle support 4.

[0041] A forward and backward moving member 54 is arranged inside the swinging movable seat 53 , and the forward and backward moving member 54 is composed of a forward and backward moving knob and a lead screw. A worm gear transmission mechanism 56 is arranged outside the forward and backward moving member 54 , and a y-axis swing knob 55 is arranged on the top of the worm gear transmission mechanism 56 .

[0042] A y-axis swing scale shaft 57 is arranged on the outside of the worm gear transmission mechanism 56, a left-right moving seat 58 is arranged on the outside of the y-axis swing scale shaft 57, a first knob screw rod 511 is installed on the outside of the left-right moving seat 58, an up-and-down moving seat 59 is arranged on the outside of the first knob screw rod 511, an up-and-down moving seat 59 is arranged on the inside of the up-and-down moving seat 59, and a U-shaped seat 512 is arranged on the outside of the up-and-down moving knob screw rod 510.

[0043] A fixing clamp 513 is installed on the outside of the U-shaped seat 512 , a pressing mechanism 514 is provided on the outside of the U-shaped seat 512 , and an ear rod 515 is installed on the inside of the pressing mechanism 514 .

[0044] The swing angle support 4, the x-axis swing locking nut 51, the x-axis swing knob 52, the swing moving seat 53 and the internal gear transmission are combined to form a rotation drive mechanism around the center x-axis of the operating table. By twisting the x-axis swing knob 52, the U-shaped seat 512 can be rotated around the center X-axis of the ear rod 515 between an angle of -10° and -10°.

[0045] The swinging movable seat 53 and the forward and backward movable member 54 form a forward and backward moving mechanism, which can make the U-shaped seat 512 move forward and backward around the center of the ear rod 515 within a stroke of 0-30mm.

[0046] The y-axis swing knob 55 and the worm gear transmission mechanism 56 are combined into a rotation drive mechanism around the Y-axis at the center of the operating table. By twisting the y-axis swing knob 55, the U-shaped seat 512 can be rotated around the Y-axis at the center of the ear rod 515 within an angle between -15° and 15°, and it has a certain self-locking function when rotated to a certain position.

[0047] The left-right moving seat 58 and the first knob screw rod 511 form a left-right moving mechanism, which can make the U-shaped seat 512 move left-right around the center of the ear rod 515 within a stroke range of 0-30 mm.

[0048] The up-and-down moving seat 59 and the up-and-down moving knob screw rod 510 form an up-and-down moving mechanism, which can make the U-shaped seat 512 move up and down around the center of the ear rod 515 within a stroke range of 0-30mm.

[0049] After the animal's head is clamped by the ear rods 515 on both sides, the ear rods 515 are compressed by the compression mechanism 514 to ensure that the animal's head is fixed in position.

[0050] A Y-axis knob screw 73 is arranged inside the Y-axis wedge seat 71, a first magnetic strip 75 is installed on the top of the Y-axis wedge seat 71, a first magnetic grating sensor 74 is installed on the top of the Y-axis wedge seat 71, a first angle adjustment seat 76 is arranged on the top of the Y-axis dovetail block 72, and a second angle adjustment seat 77 is installed on the top of the first angle adjustment seat 76.

[0051] A Z-axis guide rod 78 is arranged on the top of the second angle adjustment seat 77, an XZ-axis connecting seat 712 is installed on the outside of the Z-axis guide rod 78, a second magnetic grating sensor 79 is installed on the outside of the XZ-axis connecting seat 712, a second magnetic strip 710 is installed on the outside of the XZ-axis connecting seat 712, and a Z-axis knob screw 711 is arranged on the inside of the XZ-axis connecting seat 712.

[0052] An X-axis guide rod 713 is arranged inside the XZ-axis connecting seat 712, an X-axis knob screw 715 is arranged inside the XZ-axis connecting seat 712, a connecting fixing block 714 is installed outside the X-axis guide rod 713, an end clamping circular shaft 716 is installed outside the connecting fixing block 714, and a third magnetic grating sensor and a third magnetic strip are arranged outside the connecting fixing block 714.

[0053] The Y-axis wedge seat 71, the Y-axis dovetail block 72, the Y-axis knob screw 73, the first magnetic grid sensor 74, and the first magnetic strip 75 constitute a Y-axis moving device, and the operating arm can be operated to move in the Y-axis direction through the Y-axis knob screw 73.

[0054] The Z-axis guide rod 78, the second magnetic grid sensor 79, the second magnetic strip 710, and the Z-axis knob screw 711 constitute a Z-axis moving device, and the operating arm can be operated to move in the Z-axis direction through the Z-axis knob screw 711.

[0055] The X-axis guide rod 713, the third magnetic grid sensor, the third magnetic strip, and the X-axis knob screw 715 constitute an X-axis moving device, and the operating arm can be operated to move in the X-axis direction through the knob screw.

[0056] Working principle: Before using the device, adjust the multi-angle adjustment mechanism 5 of the operating table to fix the position of the animal. Then adjust the position of the multi-angle adjustment mechanism 5 or the rotation adjustment mechanism 3 of the operating table according to the position of the bottom swing center axis 32 and the calibration block 33 to make the animal in the center position.

[0057] When the angle of the operating table needs to be adjusted, the bottom swing locking nut 36 is manually loosened, and the bottom swing knob 35 is operated to rotate the bottom rotating platform 34 through the gear transmission mechanism 37. The rotation angle range is: -10°-10°, and the swing is driven by gear meshing transmission. After adjusting the position of the rotating platform 34, the bottom swing locking nut 36 is locked.

[0058] The position of the U-shaped seat 512 is adjusted by adjusting the multi-angle adjustment mechanism 5 of the operating table.

[0059] The swing angle support 4, the x-axis swing locking nut 51, the x-axis swing knob 52, the swing moving seat 53 and the internal gear transmission are combined to form a rotation drive mechanism around the center x-axis of the operating table. By twisting the x-axis swing knob 52, the U-shaped seat 512 can be rotated around the center X-axis of the ear rod 515 between an angle of -10° and -10°.

[0060] The swinging movable seat 53 and the forward and backward movable member 54 form a forward and backward moving mechanism, which can make the U-shaped seat 512 move forward and backward around the center of the ear rod 515 within a stroke of 0-30mm.

[0061] The y-axis swing knob 55 and the worm gear transmission mechanism 56 are combined into a rotation drive mechanism around the Y-axis at the center of the operating table. By twisting the y-axis swing knob 55, the U-shaped seat 512 can be rotated around the Y-axis at the center of the ear rod 515 within an angle between -15° and 15°, and it has a certain self-locking function when rotated to a certain position.

[0062] The left-right moving seat 58 and the first knob screw rod 511 form a left-right moving mechanism, which can make the U-shaped seat 512 move left-right around the center of the ear rod 515 within a stroke range of 0-30 mm.

[0063] The up-and-down moving seat 59 and the up-and-down moving knob screw rod 510 form an up-and-down moving mechanism, which can make the U-shaped seat 512 move up and down around the center of the ear rod 515 within a stroke range of 0-30mm.

[0064] After the animal's head is clamped by the ear rods 515 on both sides, the ear rods 515 are compressed by the compression mechanism 514 to ensure that the animal's head is fixed in position.

[0065] The three-axis manipulation mechanism 7 can be adjusted according to the position of the animal's head to perform experimental operations on the animal.

[0066] The Y-axis wedge seat 71, the Y-axis dovetail block 72, the Y-axis knob screw 73, the first magnetic grid sensor 74, and the first magnetic strip 75 constitute a Y-axis moving device, and the operating arm can be operated to move in the Y-axis direction through the Y-axis knob screw 73.

[0067] The Z-axis guide rod 78, the second magnetic grid sensor 79, the second magnetic strip 710, and the Z-axis knob screw 711 constitute a Z-axis moving device, and the operating arm can be operated to move in the Z-axis direction through the Z-axis knob screw 711.

[0068] The X-axis guide rod 713, the third magnetic grid sensor, the third magnetic strip, and the X-axis knob screw 715 form an X-axis moving device, and the operating arm can be operated to move in the X-axis direction through the knob screw, thereby adjusting the position of the end clamping circular shaft 716, i.e., the syringe or other equipment.

[0069] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat, specifically comprising: The base plate (1) is characterized in that: a foot pad (2) is fixedly connected to the bottom of the base plate (1), and a forward and backward movable adjustment seat (6) is installed on the top of the base plate (1); The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat also includes: A rotation adjustment mechanism (3) is used to adjust the overall Z-axis swing angle of the operating table by rotation, the rotation adjustment mechanism (3) is arranged on the top of the base plate (1), the rotation adjustment mechanism (3) comprises a rotation platform (34), a bottom swing center axis (32) is installed on the top of the rotation platform (34), a calibration block (33) is arranged on the top of the bottom swing center axis (32), the rotation platform (34) is arranged on the top of the base plate (1), a swing angle support (4) is arranged on the top of the rotation adjustment mechanism (3), and an operating table multi-angle adjustment mechanism (5) is arranged outside the swing angle support (4); A three-axis operating mechanism (7) is used to adjust the position of the syringe. The three-axis operating mechanism (7) is arranged outside the forward and backward movable adjustment seat (6). The three-axis operating mechanism (7) comprises a Y-axis wedge seat (71). A Y-axis dovetail block (72) is arranged on the top of the Y-axis wedge seat (71). The Y-axis wedge seat (71) is arranged outside the forward and backward movable adjustment seat (6).

2. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 1, characterized in that: A bottom swing scale (31) is arranged on the top of the rotating platform (34), a bottom swing locking nut (36) is arranged inside the rotating platform (34), a bottom swing knob (35) is arranged on the top of the rotating platform (34), and a gear transmission mechanism (37) is arranged at the bottom of the bottom swing knob (35).

3. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 1, characterized in that: The multi-angle adjustment mechanism (5) of the operating table comprises an x-axis swing locking nut (51) and a swing movable seat (53), wherein an x-axis swing knob (52) is arranged inside the swing movable seat (53), the swing movable seat (53) is arranged outside the x-axis swing locking nut (51), and the x-axis swing locking nut (51) is arranged inside the swing angle support (4).

4. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 3, characterized in that: A forward and backward moving member (54) is arranged inside the swinging movable seat (53), a worm gear transmission mechanism (56) is arranged outside the forward and backward moving member (54), and a y-axis swing knob (55) is arranged on the top of the worm gear transmission mechanism (56).

5. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 4, characterized in that: The worm gear transmission mechanism (56) is provided with a y-axis swing scale shaft (57) on the outside, a left-right moving seat (58) is provided on the outside of the y-axis swing scale shaft (57), a first knob screw (511) is installed on the outside of the left-right moving seat (58), an up-and-down moving seat (59) is provided on the outside of the first knob screw (511), an up-and-down moving seat (59) is provided on the inside of the up-and-down moving seat (59), and a U-shaped seat (512) is provided on the outside of the up-and-down moving knob screw (510).

6. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 5, characterized in that: A fixing clamp (513) is installed on the outside of the U-shaped seat (512), a pressing mechanism (514) is provided on the outside of the U-shaped seat (512), and an ear rod (515) is installed on the inside of the pressing mechanism (514).

7. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 1, characterized in that: A Y-axis knob screw (73) is arranged inside the Y-axis wedge seat (71), a first magnetic strip (75) is installed on the top of the Y-axis wedge seat (71), a first magnetic grating sensor (74) is installed on the top of the Y-axis wedge seat (71), a first angle adjustment seat (76) is arranged on the top of the Y-axis dovetail block (72), and a second angle adjustment seat (77) is installed on the top of the first angle adjustment seat (76).

8. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 7, characterized in that: A Z-axis guide rod (78) is arranged on the top of the second angle adjustment seat (77), an XZ-axis connecting seat (712) is installed on the outside of the Z-axis guide rod (78), a second magnetic grating sensor (79) is installed on the outside of the XZ-axis connecting seat (712), a second magnetic strip (710) is installed on the outside of the XZ-axis connecting seat (712), and a Z-axis knob screw (711) is arranged on the inside of the XZ-axis connecting seat (712).

9. The brain stereotaxic instrument with a multi-degree-of-freedom adjustable U-shaped seat according to claim 8, characterized in that: An X-axis guide rod (713) is arranged inside the XZ-axis connection seat (712), an X-axis knob screw rod (715) is arranged inside the XZ-axis connection seat (712), a connection fixing block (714) is installed outside the X-axis guide rod (713), and an end clamping circular shaft (716) is installed outside the connection fixing block (714).

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