A sleeve fixation device for craniocerebral surgery

Abstract

This invention discloses a sleeve fixation device for craniocerebral surgery, comprising: a support body that can be placed in a bone window; a fixation member disposed in the middle of the support body, the fixation member having a locking hole in the middle for locking the sleeve; and at least three retractable support legs disposed in the support body. In a first state, all / or part of the support legs are located in guide holes of the support body; in a second state, the portions of the support legs extending out of the guide holes of the support body can overlap the edge of the bone window to support the support body. In use, with at least three support legs in the second state, the support body is placed in the bone window, the portions of the support legs extending out of the guide holes of the support body overlap the edge of the bone window, and then the sleeve is installed on the fixation member. Because the solution of this invention provides excellent support for the sleeve, it can alleviate the fatigue of the surgeon, thereby reducing the difficulty of the surgical procedure.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a sleeve fixation device for craniocerebral surgery. Background Technology

[0002] During craniocerebral surgery, a bone window is created in the skull to perform the corresponding surgical treatment. To minimize damage to brain tissue during the procedure, a balloon is typically delivered to the lesion using a trocar. The balloon then opens up the brain tissue at the lesion site, allowing for surgical intervention. However, the trocar is always operated manually during the procedure, which can easily cause fatigue and increases the difficulty of the surgery.

[0003] Therefore, how to reduce the difficulty of craniocerebral surgery has become an urgent problem to be solved by those in the field. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is how to reduce the difficulty of craniocerebral surgery. To this end, the present invention provides a sleeve fixation device for craniocerebral surgery.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A sleeve fixation device for craniocerebral surgery, comprising:

[0007] A support that can be placed in a bone window, the support having a guide hole;

[0008] A fixing member is provided in the middle of the support body, and the middle of the fixing member has a locking hole for locking the sleeve;

[0009] At least three retractable support legs are disposed in the guide hole. In a first state, all or part of the support legs are located in the guide hole; in a second state, the portion of the support legs extending out of the guide hole can overlap the edge of the bone window to support the support body.

[0010] In one embodiment of the present invention, the support body and the fixing member are either an integral structure or a separate structure.

[0011] In one embodiment of the present invention, the support body has a mounting hole in the middle, and the fastener is disposed in the mounting hole.

[0012] In one embodiment of the present invention, the support body includes a first support body and a second support body, the first support body and the second support body together forming the mounting hole and the guide hole.

[0013] In one embodiment of the present invention, the mounting hole and the fixing member are spherical pairs, and a damping member is provided between the mounting hole and the fixing member. The damping member can provide a torque to the fixing member that is opposite to the rotation direction of the fixing member.

[0014] In one embodiment of the present invention, the first support body is threaded onto the second support body, and a damping spring is further provided between the damping member and the first support body.

[0015] In one embodiment of the present invention, the side of the support body near the bone window has a curved structure.

[0016] In one embodiment of the present invention, the fixing member is rotatably disposed in the mounting hole, the outer wall of the fixing member is provided with a first tooth, and the supporting leg is provided with a second tooth near the edge of the fixing member that meshes with the first tooth. When the fixing member rotates in a first direction, the fixing member can drive the supporting leg to move in the direction of retracting the guide hole; when the fixing member rotates in a second direction, the fixing member can drive the supporting leg to move in the direction of extending out of the guide hole.

[0017] In one embodiment of the present invention, the support leg is provided with a clearance space near the edge of the fixing member, and the support leg is provided with a third tooth at the edge away from the fixing member. The support body is provided with a fine-tuning member, and the fine-tuning member is provided with a fourth tooth that can mesh with the third tooth. When the end of the second tooth slides out of the first tooth, the third tooth just matches the fourth tooth, and the first tooth corresponds to the clearance space.

[0018] In one embodiment of the present invention, the support leg includes a first support leg, a second support leg, and a locking sleeve, wherein the first support leg is sleeved outside the second support leg and is locked by the locking sleeve, and the second tooth is disposed on the edge of the first support leg near the fixing member.

[0019] In one embodiment of the present invention, the end of the support leg near the fixing member is provided with a threaded portion, and the support body is provided with an adjusting screw that cooperates with the threaded portion.

[0020] In one embodiment of the present invention, the end of the support leg away from the fixing member is provided with an overlapping claw that overlaps the bone window, and the overlapping claw is rotatable about the axis of the support leg.

[0021] In one embodiment of the present invention, a first elastic element is provided between the guide hole and the support leg to drive the support leg to move away from the fixing member, and a slot is provided on the support leg; a spring piece is provided in the guide hole at the part opposite to the slot, the first end of the spring piece is fixed on the guide hole, and the second end of the spring piece is suspended and can cooperate with the slot; a first unlocking button for pressing the spring piece is provided on the guide hole.

[0022] In one embodiment of the present invention, a second elastic member is provided between the guide hole and the support leg to drive the support leg to move away from the fixing member, and the support leg is provided with a ratchet portion; a pawl is provided in the guide hole at the part opposite to the ratchet portion, and the middle part of the pawl is hinged to the guide hole; a third elastic member is provided between the guide hole and the first end of the pawl to drive the first end of the pawl to move closer to the ratchet portion; a second unlocking button is provided on the guide hole to press the second end of the pawl.

[0023] In one embodiment of the present invention, the supporting leg has an arc-shaped structure.

[0024] As can be seen from the above technical solution, when using the sleeve fixation device for craniocerebral surgery of the present invention, at least three support legs are in the second state, the support body is placed in the bone window, and the portions of the support legs extending out of the guide holes of the support body overlap the edge of the bone window. Then, the sleeve is installed on the fixation member. Because the solution of the present invention can provide excellent support for the sleeve, it can alleviate the fatigue of the surgeon, thereby reducing the difficulty of the surgical treatment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the main sectional view of a sleeve fixation device for craniocerebral surgery provided by the present invention;

[0027] Figure 2 This is a schematic diagram of the main sectional view of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the main sectional view of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the main sectional view of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0030] Figure 5 A top sectional view of the first state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0031] Figure 6 A top sectional view of the second state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0032] Figure 7 A top sectional view of the first state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0033] Figure 8 A top sectional view of the second state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0034] Figure 9 A top sectional view of the first state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0035] Figure 10 A top sectional view of the second state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0036] Figure 11 This is a schematic diagram of the supporting leg in another type of sleeve fixation device for craniocerebral surgery provided by the present invention;

[0037] Figure 12 A top sectional view of the first state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0038] Figure 13 A top sectional view of the second state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0039] Figure 14 This is a schematic diagram of the supporting leg in another type of sleeve fixation device for craniocerebral surgery provided by the present invention;

[0040] Figure 15 A top sectional view of the first state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0041] Figure 16A top sectional view of the second state of another sleeve fixation device for craniocerebral surgery provided by the present invention;

[0042] Figure 17 A schematic diagram of the front sectional structure of another sleeve fixation device for craniocerebral surgery provided by the present invention in the first state;

[0043] Figure 18 This is a schematic diagram of the front sectional view of another sleeve fixation device for craniocerebral surgery provided by the present invention in its second state.

[0044] Figure 19 A schematic diagram of the front sectional structure of another sleeve fixation device for craniocerebral surgery provided by the present invention in the first state;

[0045] Figure 20 This is a schematic diagram of the front sectional view of another sleeve fixation device for craniocerebral surgery provided by the present invention in its second state.

[0046] In the diagram, 100 is a sleeve, 200 is a skull, 201 is a bone window, 300 is a sleeve fixing device, 301 is a support body, 302 is a fixing component, 303 is a support leg, 304 is a fine-tuning component, 305 is a lead screw, 306 is a first elastic component, 307 is a spring, 308 is a first unlocking button, 309 is a second elastic component, 310 is a pawl, 311 is a third elastic component, 312 is a second unlocking button, 3011 is a guide hole, 3012 is a first support body, 3013 is a second support body, 3031 is a second tooth, 3032 is a third tooth, 3033 is a first support leg, 3034 is a second support leg, 3035 is a locking sleeve, 3036 is a first overlapping claw, 3037 is a threaded part, 3038 is a second overlapping claw, and 3039 is a ratchet part. Detailed Implementation

[0047] The core of this invention is to provide a sleeve fixation device for craniocerebral surgery to reduce the difficulty of craniocerebral surgery.

[0048] Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations illustrated in the embodiments below are not limited to those necessary for the solution of the invention described in the claims.

[0049] Please see Figure 1The sleeve fixation device 300 for craniocerebral surgery in this embodiment of the invention includes a support body 301, a fixation member 302, and at least three support legs 303. The support body 301 can be placed in the bone window 201, and a guide hole 3011 is provided on the support body 301. The fixation member 302 is disposed in the middle of the support body 301, and the middle part of the fixation member 302 has a locking hole for locking the sleeve 100. At least three support legs 303 are retractably disposed in the guide hole 3011. When in the first state, all / or part of the support legs 303 are located in the guide hole 3011. When in the second state, the support legs 303 partially extend out of the guide hole 3011 and can overlap the edge of the bone window 201 to support the support body 301.

[0050] When using the sleeve fixation device 300 for craniocerebral surgery according to the present invention, with at least three support legs 303 in a second state, the support body 301 is placed in the bone window 201, and the portions of the support legs 303 extending out of the guide holes 3011 of the support body 301 overlap the edge of the bone window 201. Then, the sleeve 100 is installed on the fixation member. Because the solution of the present invention provides excellent support for the sleeve 100, it can alleviate the operator's fatigue, thereby reducing the difficulty of the surgical procedure.

[0051] It should be noted that the bone window 201 is a hole made in the skull 200 during surgery; the support body 301 supports the fixation member 302 and the support leg 303; the fixation member 302 supports the sleeve 100. The support body 301 and the fixation member 302 can be an integral structure or a separate structure.

[0052] When the fixing member 302 and the support body 301 are separate structures, the support body 301 has a mounting hole for mounting the fixing member 302 and a guide hole 3011 for cooperating with the support leg 303 in the middle. The fixing member 302 is fixed in the mounting hole, or the fixing member 302 is movably disposed in the mounting hole. In the movable disposal method, it is rotatably disposed in the mounting hole of the support body 301.

[0053] To facilitate adjustment of the viewing angle of the sleeve 100 on the fixing member 302, the fixing member 302 and the support 301 are in a damped spherical fit, such as... Figure 2 As shown. The so-called damped spherical fit can be understood as a spherical pair fit between the fixing member 302 and the support body 301. At the same time, there is damping between the fixing member 302 and the support body 301. Only when an external force of a preset size is used can the angle of the fixing member 302 relative to the support body 301 be adjusted, so as to achieve the purpose of adjusting the viewing angle of the sleeve 100.

[0054] Please see Figure 2When the fixation member 302 and the support body 301 are in a damped spherical fit, the sleeve fixation device 300 for craniocerebral surgery includes a support body 301, a fixation member 302, a damping member 400, and at least three support legs 303. The support body 301 can be placed in the bone window 201, and the support body 301 is provided with a mounting hole and a guide hole 3011. The mounting hole is a spherical mounting hole. The fixation member 302 is rotatably disposed in the mounting hole, and the middle of the fixation member 302 has a locking hole for locking the sleeve 100. The damping member... 400 is disposed between the mounting hole and the fixing member 302. The damping member 400 can provide a torque to the fixing member 302 opposite to the rotation direction of the fixing member 302. At least three support legs 303 are telescopically disposed in the guide hole 3011. When in the first state, all / or part of the support legs 303 are located in the guide hole 3011 of the support body 301. When in the second state, the support legs 303 partially extend out of the guide hole 3011 of the support body 301 and can overlap the edge of the bone window 201 to support the support body 301.

[0055] The sleeve 100 is placed in the mounting hole of the fixing member 302. When it is necessary to adjust the angle of the sleeve 100, an external force is applied to the sleeve 100. When the external force is sufficient to overcome the reverse torque of the damping member 400 acting on the fixing member 302, the fixing member 302 rotates relative to the support body 301. When the external force is lost, the fixing member 302 can be stably maintained in the position when the external force is lost under the action of the damping member 400.

[0056] The aforementioned support 301 includes a first support 3012 and a second support 3013. The first support 3012 and the second support 3013 together form a mounting hole and a guide hole 3011. The first support 3012 and the second support 3013 can be detachably connected or non-detachably connected.

[0057] Please see Figure 3 To facilitate adjustment of the damping force between the fixing member 302 and the support body 301, the first support body 3012 is threaded onto the second support body 3013. A damping spring 401 is also provided between the damping member 400 and the first support body 3012. When it is necessary to increase the damping force, the first support body 3012 is rotated to reduce the distance between the first support body 3012 and the second support body 3013. The pressure exerted by the damping spring 401 on the damping member 400 increases, thereby increasing the friction between the fixing member 302 and the damping member 400, which is equivalent to increasing the damping force. When it is necessary to decrease the damping force, the first support body 3012 is rotated to increase the distance between the first support body 3012 and the second support body 3013. The pressure exerted by the damping spring 401 on the damping member 400 decreases, thereby reducing the friction between the fixing member 302 and the damping member 400, which is equivalent to decreasing the damping force.

[0058] Please see Figure 5 and Figure 8 The switching between the first and second states of the aforementioned support leg 303 can be achieved by rotating the fixing member 302. For example, the fixing member 302 is rotatably mounted on the support body 301, and the outer wall of the fixing member 302 is provided with a first tooth. The support leg 303 is provided with a second tooth 3031 that meshes with the first tooth near the edge of the fixing member 302. When the fixing member 302 rotates in the first direction, the fixing member 302 can drive the support leg 303 to move in the direction of retracting the guide hole 3011. When the fixing member 302 rotates in the second direction, the fixing member 302 can drive the support leg 303 to move in the direction of extending out of the guide hole 3011.

[0059] In this embodiment of the invention, all support legs 303 are provided with second teeth 3031. When the fixing member 302 rotates in the first direction, all support legs 303 move towards the retraction guide hole 3011; when the fixing member 302 rotates in the second direction, all support legs 303 move towards the extension guide hole 3011. This achieves simultaneous retraction and extension of all support legs 303.

[0060] Furthermore, such as Figure 9 and Figure 10 The support leg 303 has a clearance space near the edge of the fixing member 302, and the support leg 303 has a third tooth 3032 away from the edge of the fixing member 302. The support body 301 is provided with a fine adjustment member 304, and the fine adjustment member 304 is provided with a fourth tooth that can mesh with the third tooth 3032. When the end of the second tooth 3031 slides out of the first tooth, the third tooth 3032 just matches the fourth tooth, and the first tooth corresponds to the clearance space.

[0061] When the fixing member 302 rotates in the second direction, all the support legs 303 move towards the direction of extending out of the guide hole 3011. When all the support legs 303 move to their limit positions, it indicates that the adjustment limit of the fixing member has been reached. If one of the support legs 303 has not yet reached the position of the bone window 201, the fine-tuning member 304 corresponding to that support leg 303 is rotated in the second direction. The fourth tooth on the fine-tuning member 304 meshes with the third tooth 3032, thereby driving the support leg 303 to continue moving towards the direction of extending out of the guide hole 3011 until it overlaps with the bone window 201. Similarly, when two support legs 303 have not reached the position of the bone window 201, the fine-tuning members 304 corresponding to these two support legs 303 are adjusted; when three support legs 303 have not reached the position of the bone window 201, the fine-tuning members 304 corresponding to these three support legs 303 are adjusted.

[0062] When it is necessary to retract the support legs 303, rotate the fine-tuning member 304 in the first direction until the second tooth 3031 begins to engage with the first tooth, and rotate the fixing member 302 in the first direction until all support legs 303 are retracted to the designated position.

[0063] In addition to controlling the extension length of the support leg 303 by adjusting the fixing member 302 as described above, in this embodiment of the invention, such as Figure 11 As shown, the support leg 303 includes a first support leg 3033, a second support leg 3034, and a locking sleeve 3035. The first support leg 3033 is sleeved on the outside of the second support leg 3034 and is locked in place by the locking sleeve 3035. A second tooth 3031 is provided on the edge of the first support leg 3033 near the fixing member 302. When the second state is required, the second support leg 3034 is moved so that the second support leg 3034 protrudes from the first support leg 3033, and then the locking sleeve 3035 is tightened, so that the support leg 303 is stably in the second state. When the first state is required, the locking sleeve 3035 is loosened, the second support leg 3034 is moved so that the second support leg 3034 retracts into the first support leg 3033, and then the locking sleeve 3035 is tightened.

[0064] This invention also discloses another method for adjusting the extension and retraction of the support leg 303, such as... Figures 14 to 16 As shown, the support leg 303 has a threaded portion 3037 at one end near the fixing member 302, and the support body 301 has an adjusting screw 305 that engages with the threaded portion 3037. Rotating the screw 305 sequentially in the second direction engages with the threaded portion 3037 on the support leg 303, causing the support leg 303 to move away from the fixing member 302 until all the support legs 303 can overlap the bone window 201; this is the first state. When it is necessary to retract the support leg 303, rotating the screw 305 sequentially in the first direction engages with the threaded portion 3037 on the support leg 303, causing the support leg 303 to move towards the fixing member 302 until all the support legs 303 retract into the guide hole 3011; this is the second state.

[0065] To facilitate the support leg 303 to be attached to the bone window 201, the end of the support leg 303 away from the fixing member 302 is provided with an lap claw that laps onto the bone window 201. The lap claw can rotate around the axis of the support leg 303.

[0066] When the supporting leg is Figure 11 In the structure shown, in order to facilitate the second support leg 3034 to overlap the bone window 201, the end of the second support leg 3034 away from the fixing member 302 is provided with a first overlapping claw 3036 that overlaps the bone window 201. The first overlapping claw 3036 can rotate around the axis of the second support leg 3034.

[0067] When the supporting leg is Figure 14 In the structure shown, the end of the support leg 303 away from the fixing member 302 is provided with a second overlapping claw 3038 that overlaps on the bone window 201. The second overlapping claw 3038 can rotate around the axis of the support leg 303.

[0068] This invention can also be adjusted in other ways, such as Figures 15 to 18 As shown, a first elastic element 306 is provided between the guide hole 3011 and the support leg 303 to drive the support leg 303 to move away from the fixing member 302. The support leg 303 is provided with a slot. A spring piece 307 is provided in the guide hole 3011 at the part opposite to the slot. The first end of the spring piece 307 is fixed on the guide hole 3011, and the second end of the spring piece 307 is suspended and can cooperate with the slot. A first unlocking button 308 for pressing the spring piece is provided on the guide hole.

[0069] In use, an external force is applied to the first unlock button 308, which pushes the second end of the spring piece 307 away from the support leg 303. When the second end of the spring piece 307 disengages from the slot, the support leg 303 loses the restraint of the spring piece 307 and moves towards the extension guide hole 3011 under the push of the first elastic element 306. When the support leg 303 extends to the required length, the first unlock button 308 is released. Under the action of its own elastic force, the second end of the spring piece 307 moves towards the support leg 303 until the first end of the spring piece 307 engages with the slot on the support leg 303, thus locking the support leg 303. The first unlock button 308 corresponding to the remaining support legs 303 is operated in sequence according to the above operation.

[0070] like Figure 19 and Figure 20 As shown, a second elastic element 309 is provided between the guide hole 3011 and the support leg 303 to drive the support leg 303 to move away from the fixing member 302. A ratchet portion 3039 is provided on the support leg 303. A pawl 310 is provided in the guide hole 3011 opposite to the ratchet portion 3039. The middle part of the pawl 310 is hinged to the guide hole 3011. A third elastic element 311 is provided between the guide hole 3011 and the first end of the pawl 310 to drive the first end of the pawl 310 to move closer to the ratchet portion 3039. A second unlock button 312 for pressing the second end of the pawl 310 is also provided on the guide hole 3011.

[0071] In use, an external force is applied to the second unlock button 312. The second unlock button 312 pushes the second end of the pawl 310 towards the support leg 303. Under the lever principle, the first end of the pawl 310 moves away from the support leg 303. When the first end of the pawl 310 disengages from the ratchet 3039, the support leg 303 is freed from the restraint of the pawl 310 and moves towards the extension guide hole 3011 under the push of the second elastic element 309. When the support leg 303 extends to the required length, the second unlock button 312 is released. Under the action of the third elastic element 311, the first end of the pawl 310 moves towards the support leg 303, and the second end moves away from the support leg 303, until the first end of the pawl 310 engages with the ratchet 3039 on the support leg 303, thus locking the support leg 303. The second unlock button 312 corresponding to the remaining support legs 303 is operated sequentially according to the above operation.

[0072] The above operation requires operating the second unlock button 312 corresponding to each support leg 303 one by one. To facilitate operation, this embodiment of the invention may also include a pressing ring connecting all the second unlock buttons 312. When an external force is applied to the pressing ring, all the second unlock buttons 312 are pressed. When the external force is removed, the spring piece 308 corresponding to each support leg 303 pushes the second end of the pawl 307 to move away from the support leg 303. At the same time, the pressing ring is reset under the action of all the pawls 307.

[0073] It should be noted that, since the bones in the skull have a certain curvature, in order to ensure that the sleeve 100 is in a suitable position, in this embodiment of the invention, the support leg 303 is an arc-shaped structure; the end face of the support body 301 near the bone window 201 is set as a curved surface structure.

[0074] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0075] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0076] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sleeve fixation device for use in cranial surgery, characterized in that The application relates to a support body which can be placed in a bone window, wherein a guide hole is arranged on the support body; a fixing member is arranged in the middle part of the support body, and the middle part of the fixing member is provided with a clamping hole for clamping a sleeve; at least three support legs are arranged in the guide hole in a telescopic mode; when in a first state, all or part of the support legs are located in the guide hole; when in a second state, part of the support legs which extends out of the guide hole can be lapped on the edge of the bone window to support the support body; a mounting hole is arranged in the middle part of the support body, and the fixing member is arranged in the mounting hole; the support body comprises a first support body and a second support body, and the first support body and the second support body jointly form the mounting hole and the guide hole; the mounting hole and the fixing member are in spherical pair cooperation, a damping member is arranged between the mounting hole and the fixing member, and the damping member can provide a torque to the fixing member which is opposite to the rotating direction of the fixing member; the first support body is screwed on the second support body, and a damping spring is further arranged between the damping member and the first support body. The fixing member is rotatably arranged in the mounting hole, the outer wall of the fixing member is provided with a first tooth part, the edge of the support leg close to the fixing member is provided with a second tooth part which is engaged with the first tooth part, when the fixing member rotates in a first direction, the fixing member can drive the support leg to move in a direction of retracting into the guide hole; when the fixing member rotates in a second direction, the fixing member can drive the support leg to move in a direction of extending out of the guide hole. The edge of the support leg away from the fixing member is provided with a third tooth part, the support body is provided with a fine adjustment member, the fine adjustment member is provided with a fourth tooth part which can be engaged with the third tooth part; when the end of the second tooth part slides out of the first tooth part, the third tooth part is just matched with the fourth tooth part, and the first tooth part corresponds to the avoiding space. The support leg comprises a first support leg, a second support leg and a locking sleeve, the first support leg is sleeved on the outside of the second support leg and is clamped by the locking sleeve, and the second tooth part is arranged on the edge of the first support leg close to the fixing member. The end of the support leg close to the fixing member is provided with a threaded part, and the support body is provided with an adjusting screw rod matched with the threaded part. The end of the support leg away from the fixing member is provided with a lapping claw which can be lapped on the bone window and can rotate around the axis of the support leg. A first elastic member is arranged between the guide hole and the support leg to drive the support leg to move away from the fixing member, a clamping groove is arranged on the support leg, a spring sheet is arranged at the part of the guide hole opposite to the clamping groove, the first end of the spring sheet is fixed on the guide hole, the second end of the spring sheet is suspended and can be matched with the clamping groove, and a first unlocking button is arranged on the guide hole to press the spring sheet.

2. The sleeve fixation device for craniocerebral surgery according to claim 1, characterized in that, ​ 3. The sleeve fixation device for craniocerebral surgery according to claim 2, characterized in that ​ 4. The sleeve fixation device for craniocerebral surgery as claimed in claim 2, wherein ​ 5. The sleeve fixation device for craniocerebral surgery as claimed in claim 1, wherein, ​ 6. The sleeve fixation device for craniocerebral surgery as claimed in claim 5, characterized in that ​ 7. The sleeve fixation device for craniocerebral surgery as claimed in claim 1, wherein ​ 8. The sleeve fixation device for craniocerebral surgery as claimed in claim 1, wherein, The guide hole is provided with a second elastic member for driving the support leg to move away from the fixing member, and the support leg is provided with a ratchet part; the part opposite to the ratchet part in the guide hole is provided with a pawl, and the middle part of the pawl is hinged on the guide hole; the first end of the pawl is provided with a third elastic member for driving the first end of the pawl to move close to the ratchet part; and the guide hole is provided with a second unlocking button for pressing the second end of the pawl.

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