A minimally invasive cranial drilling device for neurosurgery

Abstract

The present invention discloses a minimally invasive cranial drilling device for neurosurgery, comprising a holding portion, wherein a screw hole is symmetrically provided on the side of the holding portion, a mounting sleeve is detachably mounted on one side of the screw hole, a threaded hole aligned with the screw hole is provided on the side of the mounting sleeve, a plurality of adapter springs are evenly and equidistantly provided on the lower end of the mounting sleeve in the outer circumferential direction, a fixing sleeve is inlaid and installed on the other end of the adapter spring, and a plurality of accommodating cavities are sequentially provided in the lower part of the interior of the fixing sleeve. The present invention arranges an accommodating cavity, an annular bracket and an arc-shaped guide plate, and utilizes the mutual cooperation of the several, firstly, bone chips pass through the surface of the arc-shaped guide plate and enter into the accommodating cavity, and then are collected by the velvet structure formed by the short hair column and the long hair column, and are adsorbed and temporarily stored, thereby directly avoiding the problem of bone chips generated in the drilling being scattered and causing the surrounding environment to be polluted, and further improving the safety and aseptic requirements in the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of skull drilling devices, and more specifically, to a minimally invasive skull drilling device for neurosurgery. Background Art

[0002] Neurosurgery is a high-precision and cutting-edge operation, which mainly involves craniotomy for the treatment of complications such as brain nerves of patients. It involves minimally invasive craniotomy. The concept of minimally invasive surgery is to minimize the overall and long-term damage to patients. Any treatment strategy that can improve the safety of surgery and improve long-term prognosis of patients can be said to be in line with the concept of "minimally invasive". Among them, minimally invasive craniotomy surgery, in particular, involves a cranial drill device for neurosurgery. The cranial drill device is a medical device, mainly used for skull cutting, drilling and bone chiseling in head surgery. It is mainly composed of an electric motor, a handle, a drill bit and other parts, and is usually used by surgeons or neurosurgeons. The use of a cranial drill requires a high degree of technology and experience. The cranial drill is usually used in the operating room with local anesthesia or general anesthesia. Before the operation, the doctor will choose the appropriate drill bit and drilling position according to the patient's specific situation to ensure the safety and effectiveness of the operation. The cranial drill is one of the indispensable tools in modern neurosurgery.

[0003] In actual applications, the current drill bits (cranial drills) used for craniotomy will produce a large amount of bone chips when cutting the skull. Some of the bone chips will be guided out along the cutting groove trajectory on the drill bit surface, while the other part, under the cutting force of the drill bit, will directly show an irregular trend and scatter to the surrounding environment and the surface of the operating physician's palm, causing contamination. Bone chips splashing into the drill hole will directly affect the safety of the operation and the difficulty of subsequent treatment. On the other hand, when the physician uses the contaminated hands to continue the subsequent treatment operations, it is easy to cause synchronous contamination of the instruments used in the subsequent surgical treatment steps, thereby causing unnecessary sterility problems and cross-infection problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a minimally invasive cranial drilling device for neurosurgery. By setting a containing inner cavity, an annular bracket, an arc-shaped guide plate, and short hair columns and long hair columns, and utilizing the mutual cooperation of the several components, bone chips first pass through the surface of the arc-shaped guide plate and enter the containing inner cavity, and then are collected by the velvet structure formed by the short hair columns and the long hair columns, and are adsorbed and temporarily stored, thereby directly avoiding the bone chips generated in the drilling process from scattering and causing the surrounding environment and the doctor's gloves and surgical instruments to be contaminated, further improving the safety and sterility requirements in the craniotomy operation, and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a minimally invasive cranial drilling device for neurosurgery, comprising a holding portion, the interior of the holding portion is electrically connected to a connecting wire, a drill bit is arranged at the lower interior of the holding portion, screw holes are symmetrically provided on the side of the holding portion, a mounting sleeve is detachably mounted on one side of the screw hole, a threaded hole aligned with the screw hole is provided on the side of the mounting sleeve, a fastening bolt is threadedly connected to the interior of the threaded hole, and a plurality of adapter springs are evenly spaced and arranged at the lower end of the mounting sleeve in an outer circumferential direction;

[0006] A fixing sleeve is embedded and installed at the other end of the adapting spring, and a sliding inner cavity adapted to the holding portion is opened in the upper part of the fixing sleeve, and a plurality of accommodating inner cavities are opened in the lower part of the fixing sleeve in sequence, and the accommodating inner cavities are distributed in an annular shape inside the fixing sleeve as a whole;

[0007] The upper and lower sides of the inner wall of the accommodating inner cavity are respectively pasted with a base layer, and the surface of the base layer is provided with short hair columns and long hair columns in an annular array, and the horizontal height of the short hair columns is less than that of the long hair columns, and the short hair columns and the long hair columns meet the following distribution rule: starting from the inner circle of the accommodating inner cavity and ending at the outer circle, the short hair columns and the long hair columns are sequentially arranged in an odd number of circles of low, high, and low, and are annularly distributed on the upper and lower inner wall surfaces of the accommodating inner cavity, and the top ends of the short hair columns and the long hair columns are arranged as arc hook structures, and the arc hook structures of the short hair columns and the long hair columns are consistently pointed to the inside of the accommodating inner cavity;

[0008] A plurality of annular brackets are sequentially installed on the inner wall of the fixing sleeve and are located flush with the opening of the accommodating inner cavity. Arc guide plates are fixedly installed at the upper and lower ends of the annular brackets respectively. A conical seat is integrally formed on one side of the annular bracket close to the inner wall of the fixing sleeve.

[0009] The cone seat is trapezoidal in shape as a whole, and the oblique sides of the cone seat extend from one side of the fixing sleeve to one side of the annular bracket and are seamlessly connected to the side of the annular bracket;

[0010] A side of the annular bracket away from the conical seat is set as a V-shaped head end, and the side surface of the V-shaped head end is in contact with one end of the arc guide plate for fixation. The arc guide plate is in an arc shape as a whole, and the curvature of the arc guide plate gradually increases from the head end to the tail end, and is twisted and deformed toward the central axis of the annular bracket at the tail end. The extension line of the inclined surface of the V-shaped head end is tangent to the arc-shaped outer trajectory of the head end of the annular bracket, and the tail end of the arc guide plate is higher than the horizontal height value range of the short hair columns in the outermost circle.

[0011] In a preferred embodiment, the bottom end of the fastening bolt extends from one side of the threaded hole to the inside of the screw hole and is threadedly mounted with both.

[0012] In a preferred embodiment, the short hair columns and the long hair columns are designed with frosted surfaces throughout, and the short hair columns and the long hair columns arranged in a multi-circle array together form a velvet structure, and the vertical height formed by the multiple accommodating cavities is greater than the vertical working range of the drill bit.

[0013] In a preferred embodiment, a layer of viscose material is provided at the bottom end of the base layer, the shape of the base layer is adapted to the shape of the accommodating inner cavity, and the thickness of the base layer is in the range of 0.1 mm to 0.2 mm.

[0014] In a preferred embodiment, the spacing thickness value of the plurality of accommodating inner cavities is equal to the thickness value of the conical seat.

[0015] In a preferred embodiment, the surface roughness RA of the arc-shaped guide plate is 0.2.

[0016] In a preferred embodiment, the arc-shaped guide plates on one side of two adjacent annular supports together form a gradually opening narrow and long channel, and are connected to the interior of the accommodating cavity.

[0017] In a preferred embodiment, the cross-section of the accommodating inner cavity is rectangular, the annular bracket and the arc guide plate are distributed in a ring shape inside the fixed sleeve, and the annular bracket and the arc guide plate are hollow structures as a whole, and the volume of the hollow structure is larger than the diameter of the drill bit.

[0018] Technical effects and advantages of the present invention:

[0019] The present invention provides a containing inner cavity, an annular support, an arc-shaped guide plate, and short hair columns and long hair columns, and utilizes the mutual cooperation of the several components. The bone chips thrown out by the surface of the drill bit and the bone chips scattered by the cutting force of the drill bit will directly rush onto the inner wall surface of the fixed sleeve. At this time, the bone chips will first contact the surface of the arc-shaped guide plate, and slide along the surface of the arc-shaped guide plate while impacting the surface of the arc-shaped guide plate to cause slight deformation thereof, thereby ensuring that the bone chips can smoothly pass through the surface of the arc-shaped guide plate and enter the containing inner cavity. Then, the velvet structure formed by the short hair columns and the long hair columns will collect the bone chips and absorb and temporarily store them, thereby directly avoiding the problem of bone chips generated in the drilling being scattered and causing contamination of the surrounding environment, doctors' gloves, and surgical instruments, further improving the safety and sterility requirements of the device in craniotomy, and avoiding the problem of cross infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional assembly structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing sleeve of the present invention;

[0024] Figure 5 It is a schematic diagram of the half-section structure of the fixing sleeve, the annular bracket and the arc-shaped guide plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the overall three-dimensional assembly structure of the annular support and the arc-shaped guide plate of the present invention;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the three-dimensional assembly of the annular bracket and the arc-shaped guide plate of the present invention;

[0027] Figure 8 It is a schematic diagram of the overall cross-sectional structure of the annular support and the arc-shaped guide plate of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the distribution state of several annular supports and arc-shaped guide plates of the present invention;

[0029] Fig.10 It is a schematic diagram of the local structure of the fixing sleeve of the present invention;

[0030] Fig.11 It is a schematic diagram of the overall side structure of the annular support and the arc-shaped guide plate of the present invention;

[0031] Fig.12 It is a schematic diagram of the overall cross-sectional structure of the annular support and the arc-shaped guide plate of the present invention;

[0032] Fig.13 It is a schematic diagram of a partial cross-sectional structure of a fixing sleeve of the present invention;

[0033] Fig.14 It is a schematic diagram of the cross-sectional structure of the accommodating inner cavity, the annular support and the arc-shaped guide plate of the present invention.

[0034] The accompanying drawings are marked as follows: 1. holding part; 2. connecting wire; 3. drill bit; 4. screw hole; 51. mounting sleeve; 52. threaded hole; 53. fastening bolt; 54. adapter spring; 61. fixing sleeve; 62. sliding inner cavity; 63. containing inner cavity; 64. short hair column; 65. long hair column; 66. annular bracket; 67. arc guide plate; 68. conical seat; 69. base layer. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] As attached Figure 1 To Attachment Fig.14 A minimally invasive cranial drilling device for neurosurgery is shown, comprising a holding portion 1, wherein the inside of the holding portion 1 is electrically connected to a connecting wire 2, a drill bit 3 is arranged at the lower part of the inside of the holding portion 1, a screw hole 4 is symmetrically provided on the side of the holding portion 1, a mounting sleeve 51 is detachably sleeved on one side of the screw hole 4, a threaded hole 52 aligned with the screw hole 4 is provided on the side of the mounting sleeve 51, a fastening bolt 53 is connected to the inner thread of the threaded hole 52, and a plurality of adapting springs 54 are evenly spaced and evenly distributed at the lower end of the mounting sleeve 51 in the outer circumferential direction, and the above-mentioned adapting springs 54 are arranged to facilitate the compression of the adapting springs 54 above the fixing sleeve 61 to adapt to the vertical distance movement of the holding portion 1 and the drill bit 3 downward as a whole;

[0037] The other end of the adapting spring 54 is inlaid with a fixing sleeve 61, and the upper part of the fixing sleeve 61 is provided with a sliding inner cavity 62 adapted to the holding portion 1, and the lower part of the fixing sleeve 61 is provided with a plurality of accommodating inner cavities 63 in sequence, and the accommodating inner cavities 63 are distributed in an annular shape inside the fixing sleeve 61 as a whole. The plurality of accommodating inner cavities 63 provided above are used to conveniently block and store bone chips generated during the drilling process of the drill bit 3, thereby further improving the practicality of the device;

[0038] The upper and lower sides of the inner wall of the accommodating inner cavity 63 are respectively pasted with a base layer 69, and the surface of the base layer 69 is provided with short hair columns 64 and long hair columns 65 in an annular array, and the horizontal height of the short hair columns 64 is less than the horizontal height of the long hair columns 65, and the short hair columns 64 and the long hair columns 65 meet the following distribution rules: starting from the inner circle of the accommodating inner cavity 63 and ending at the outer circle, the short hair columns 64 and the long hair columns 65 are arranged in an odd number of circles of low, high, and low in sequence, and are annularly distributed on the upper and lower inner wall surfaces of the accommodating inner cavity 63, the The top ends of the short hair column 64 and the long hair column 65 are configured as arc-shaped hook structures, and the arc-shaped hook structures of the short hair column 64 and the long hair column 65 are uniformly directed toward the interior of the accommodation cavity 63. The top ends of the short hair column 64 and the long hair column 65 are configured as arc-shaped hook structures, so that when bone chips come into contact with and adhere to the two structures, the head ends of the short hair column 64 and the long hair column 65 will limit the bone chips from sliding out along their surface tracks and play a certain role in accommodation, thereby further improving the accommodation and adhesion effects of the short hair column 64 and the long hair column 65.

[0039] A plurality of annular brackets 66 are sequentially installed on the inner wall of the fixing sleeve 61 and flush with the opening of the accommodating inner cavity 63. Arc guide plates 67 are fixedly installed at the upper and lower ends of the annular bracket 66, respectively. A conical seat 68 is integrally formed on one side of the annular bracket 66 close to the inner wall of the fixing sleeve 61. The setting of the conical seat 68 facilitates the installation and fixation of the annular bracket 66 as a whole.

[0040] The conical seat 68 is in a trapezoidal shape as a whole, and the oblique sides of the conical seat 68 extend from one side of the fixing sleeve 61 to one side of the annular bracket 66 and are seamlessly connected to the side of the annular bracket 66;

[0041] The side of the annular bracket 66 away from the conical seat 68 is set to a V-shaped head end, and the side surface of the V-shaped head end is in contact with one end of the arc guide plate 67 for fixation. The arc guide plate 67 is generally arc-shaped, and the curvature of the arc guide plate 67 from the head end to the tail end gradually increases, and is twisted and deformed toward the central axis of the annular bracket 66 at the tail end. The extended line of the inclined surface of the V-shaped head end is tangent to the arc-shaped outer trajectory of the head end of the annular bracket 66, and the horizontal height value of the tail end of the arc guide plate 67 is higher than the horizontal height value range of the short hair column 64 of the outermost circle. The extended line of the inclined surface of the above-mentioned V-shaped head end is tangent to the arc-shaped outer trajectory of the head end of the annular bracket 66, so that the bone chips will impact the V-shaped head end of the annular bracket 66, and under the guidance of the inclined surfaces on both sides of the V-shaped head end, it immediately slides to the surface of the arc guide plate 67 on the upper and lower sides of the annular bracket 66. At the same time, the overall trajectory of the bone chips is smooth and there is no obstruction problem caused by the height difference during the process.

[0042] The short hair columns 64 and the long hair columns 65 arranged in a multi-circle array together form a velvet structure, and the vertical height formed by the multiple accommodating cavities 63 together is greater than the vertical working range of the drill bit 3.

[0043] The bottom end of the base layer 69 is provided with a layer of viscose material. The shape of the base layer 69 is adapted to the shape of the accommodating inner cavity 63, and the thickness of the base layer 69 is in the range of 0.1 mm to 0.2 mm. The spacing thickness of the plurality of accommodating inner cavities 63 is equal to the thickness of the conical seat 68. The surface roughness RA of the arc guide plate 67 is 0.2. The overall smooth effect of the arc guide plate 67 is utilized to facilitate the passage of bone chips over its surface, thereby ensuring the smoothness of the bone chips.

[0044] The arc guide plates 67 on one side of the two adjacent annular brackets 66 together form a gradually opening narrow and long channel, and are connected to the interior of the accommodating inner cavity 63. The cross-section of the accommodating inner cavity 63 is rectangular. The annular bracket 66 and the arc guide plate 67 are distributed in a ring shape inside the fixing sleeve 61, and the annular bracket 66 and the arc guide plate 67 are hollow structures as a whole. The volume of the hollow structure is larger than the diameter value of the drill bit 3. Because the volume of the above-mentioned hollow structure is larger than the diameter value of the drill bit 3, the fixing sleeve 61 and the annular bracket 66 arranged on the periphery of the drill bit 3 will not interfere with and affect the normal operation of the drill bit 3, thereby ensuring the degree of coordination between their structures.

[0045] For details, please refer to the attached manual Figure 1 To Attachment Figure 3 The bottom end of the fastening bolt 53 extends from one side of the threaded hole 52 to the inside of the screw hole 4 and is threadedly installed with both.

[0046] The specific implementation method is: the mounting sleeve 51 and the holding part 1 are formed into a whole by using the fastening bolts 53, which is convenient for medical staff to operate. The mounting sleeve 51 after use can be directly removed by unscrewing the fastening bolts 53, which is convenient for cleaning and replacement operations.

[0047] For details, please refer to the attached manual Figure 5 and attached Fig.10 The short hair column 64 and the long hair column 65 are designed to be frosted throughout.

[0048] The specific implementation method is as follows: short hair columns 64 and long hair columns 65 are designed with frosted surfaces to increase the contact area between their surfaces and bone chips, thereby improving the adhesion effect on bone chips, and short hair columns 64 and long hair columns 65 arranged in an array in a specific direction are used to form a velvet structure to perform composite contact and storage of bone chips, which is further superimposed with the above-mentioned frosted design effect to improve the storage effect of bone chips.

[0049] Working principle of the present invention:

[0050] Step 1: First, the operator assembles the various components of the device normally, and then uses the device normally.

[0051] Step 2: First, the operator holds the holding part 1 tightly, and uses existing surgical operation steps to clean and disinfect the patient's head and cut the scalp to expose the skull, etc., and then uses the drill bit 3 to make a hole in the patient's skull. Before the drill bit 3 makes a hole, the bottom end of the fixed sleeve 61 mounted on the outer periphery of the holding part 1 will contact and fit tightly to the outer circle of the skull opening range. During the drilling process of the drill bit 3, the bone chips thrown out from the surface of the drill bit 3 and the bone chips scattered by the cutting force of the drill bit 3 will directly rush to the inner wall surface of the fixed sleeve 61. At this time, the bone chips will first contact the surface of the arc guide plate 67 and slide along the surface of the arc guide plate 67. At the same time, the bone chips impact the entire arc guide plate 67, slightly deforming it toward one side of the annular bracket 66, further facilitating the bone chips to pass through the surface of the arc guide plate 67 (the bone chips are in a composite motion state of sliding along the surface of the arc guide plate 67 and impacting the surface of the arc guide plate 67). At the same time, the bone chips are extremely A small part of the bone chips will impact the V-shaped head end of the annular bracket 66, and under the guidance of the inclined surfaces on both sides of the V-shaped head end, they will immediately slide to the surface of the arc-shaped guide plates 67 on the upper and lower sides of the annular bracket 66, and then slide along the surface of the arc-shaped guide plates 67. At this time, the bone chips passing through the surface of the arc-shaped guide plates 67 will directly enter the interior of the accommodating cavity 63, and be received by the velvet structure formed by the short hair columns 64 and the long hair columns 65 on the upper and lower sides of the accommodating cavity 63, and be adsorbed and temporarily stored. At the same time, when the drill bit 3 gradually opens a hole downward, the fixing sleeve 61 will be subjected to the force of the holding part 1 gradually pressing down, thereby compressing the adapter spring 54 above the fixing sleeve 61, and at the same time, the sliding inner cavity 62 inside the fixing sleeve 61 will slide relatively along the periphery of the holding part 1 to adapt to the overall downward vertical distance movement of the holding part 1 and the drill bit 3. At this point, the work process of opening the hole in the patient's skull and preventing the splashing of bone chips is completed, and then the drill bit 3 can be directly taken out.

[0052] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aging and severely worn parts inside the device.

[0053] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0054] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0055] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A minimally invasive cranial drilling device for neurosurgery, comprising a holding portion, wherein the interior of the holding portion is electrically connected to a connecting wire, and a drill bit is arranged below the interior of the holding portion, wherein: The side of the holding portion is symmetrically provided with screw holes, one side of the screw hole is detachably provided with a mounting sleeve, the side of the mounting sleeve is provided with a threaded hole aligned with the screw hole, the inner thread of the threaded hole is connected with a fastening bolt, and the lower end of the mounting sleeve is equidistantly provided with a plurality of adapting springs in the outer circumferential direction; A fixing sleeve is embedded and installed at the other end of the adapting spring, and a sliding inner cavity adapted to the holding portion is opened in the upper part of the fixing sleeve, and a plurality of accommodating inner cavities are opened in the lower part of the fixing sleeve in sequence, and the accommodating inner cavities are distributed in an annular shape inside the fixing sleeve as a whole; The upper and lower sides of the inner wall of the accommodating inner cavity are respectively pasted with a base layer, and the surface of the base layer is provided with short hair columns and long hair columns in an annular array, and the horizontal height of the short hair columns is less than that of the long hair columns, and the short hair columns and the long hair columns meet the following distribution rule: starting from the inner circle of the accommodating inner cavity and ending at the outer circle, the short hair columns and the long hair columns are sequentially arranged in an odd number of circles of low, high, and low, and are annularly distributed on the upper and lower inner wall surfaces of the accommodating inner cavity, and the top ends of the short hair columns and the long hair columns are arranged as arc hook structures, and the arc hook structures of the short hair columns and the long hair columns are consistently pointed to the inside of the accommodating inner cavity; A plurality of annular brackets are sequentially installed on the inner wall of the fixing sleeve and are located flush with the opening of the accommodating inner cavity. Arc guide plates are fixedly installed at the upper and lower ends of the annular brackets respectively. A conical seat is integrally formed on one side of the annular bracket close to the inner wall of the fixing sleeve. The cone seat is trapezoidal in shape as a whole, and the oblique sides of the cone seat extend from one side of the fixing sleeve to one side of the annular bracket and are seamlessly connected to the side of the annular bracket; A side of the annular bracket away from the conical seat is set as a V-shaped head end, and the side surface of the V-shaped head end is in contact with one end of the arc guide plate for fixation. The arc guide plate is in an arc shape as a whole, and the curvature of the arc guide plate gradually increases from the head end to the tail end, and is twisted and deformed toward the central axis of the annular bracket at the tail end. The extension line of the inclined surface of the V-shaped head end is tangent to the arc-shaped outer trajectory of the head end of the annular bracket, and the horizontal height value of the tail end of the arc guide plate is higher than the horizontal height value range of the short hair columns in the outermost circle.

2. A minimally invasive cranial drilling device for neurosurgery according to claim 1, characterized in that: The bottom end of the fastening bolt extends from one side of the threaded hole to the inside of the screw hole and is threadedly mounted therewith.

3. A minimally invasive cranial drilling device for neurosurgery according to claim 1, characterized in that: The short hair column and the long hair column are designed with frosted surface processing throughout, and the short hair column and the long hair column arranged in a multi-circle array together form a velvet structure, and the vertical height formed by the multiple accommodating cavities is greater than the vertical working range of the drill bit.

4. A minimally invasive cranial drilling device for neurosurgery according to claim 1, characterized in that: A layer of viscose material is arranged at the bottom end of the base layer, the shape of the base layer is adapted to the shape of the accommodating inner cavity, and the thickness of the base layer is in the range of 0.1 mm to 0.2 mm.

5. A minimally invasive cranial drilling device for neurosurgery according to claim 1, characterized in that: The spacing thickness of the plurality of accommodating inner cavities is equal to the thickness of the conical seat.

6. A minimally invasive cranial drilling device for neurosurgery according to claim 1, characterized in that: The arc-shaped guide plates on one side of two adjacent annular supports together form a gradually opening narrow and long channel, and are connected with the interior of the accommodating cavity.

7. A minimally invasive cranial drilling device for neurosurgery according to claim 1, characterized in that: The cross section of the accommodating inner cavity is rectangular, the annular bracket and the arc guide plate are distributed in an annular shape inside the fixing sleeve, and the annular bracket and the arc guide plate are hollow structures as a whole, and the volume of the hollow structure is larger than the diameter of the drill bit.

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