Scalp positioning and scribing device for craniocerebral operation

Abstract

The invention relates to the technical field of medical instruments, and discloses a craniocerebral operation scalp positioning and scribing device which comprises a fixing frame, a fixing block is connected to one side of the fixing frame, an upper sliding groove is formed in the upper side of the fixing block, a lower sliding groove is formed in the lower side of the fixing block, and a sliding block is slidably connected to the interior of the fixing block; the upper side of the sliding block is fixedly connected with a control block, the control block is in sliding connection with the upper sliding groove, the lower side of the sliding block is provided with an installation pipe, the installation pipe is in sliding connection with the lower sliding groove, a painting brush is in sliding connection in the installation pipe, and a first spring is arranged between the installation pipe and the painting brush. Supporting columns are slidably connected to the two ends of the fixing block correspondingly, and sliding columns are fixedly connected to one sides of the two supporting columns correspondingly. According to the scalp positioning and scribing device for the craniocerebral operation, before a paintbrush passes through the supporting column, the supporting column can automatically slide into the fixing block.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a scalp positioning and marking device for cranial surgery. Background Art

[0002] Scalp positioning and marking devices for cranial surgery play a vital role in preoperative planning and intraoperative positioning. Through precise preoperative planning, doctors can determine the location, size and shape of the surgical incision, as well as the range of resection of the lesion, so as to develop a more scientific and reasonable surgical plan. During the operation, these devices can guide doctors to accurately find the lesion location, avoid damaging the surrounding normal tissue, and ensure the smooth progress of the operation. At the same time, these devices can also improve the accuracy and safety of the operation, reduce surgical risks and the incidence of complications. With the continuous advancement and innovation of medical technology, these devices will become more intelligent and convenient, providing more accurate and efficient support for neurosurgery.

[0003] In the existing scalp positioning and marking device for cranial surgery, when drawing lines on the patient's scalp, when the brush passes through the support column, the support column may affect the line of sight, which may cause the line to be distorted; therefore, it does not meet the existing needs. In this regard, we propose a scalp positioning and marking device for cranial surgery. Summary of the invention

[0004] The present invention provides a scalp positioning and marking device for cranial surgery, which has the beneficial effect that a support column can automatically slide into a fixed block before a brush passes through the support column, thereby solving the problem mentioned in the above background technology that when drawing a line on the patient's scalp, the support column may affect the line of sight when the brush passes through the support column, thereby possibly causing the line to be drawn crookedly.

[0005] The present invention provides the following technical solution: a scalp positioning and marking device for cranial brain surgery, comprising a fixing frame, a fixing block connected to one side of the fixing frame, an upper slide groove formed on the upper side of the fixing block, a lower slide groove formed on the lower side of the fixing block, a sliding block slidably connected inside the fixing block, a control block fixedly connected to the upper side of the sliding block, the control block slidably connected to the upper slide groove, a mounting tube provided on the lower side of the sliding block, the mounting tube slidably connected to the lower slide groove, a paintbrush slidably connected inside the mounting tube, and a first spring provided between the mounting tube and the paintbrush; Both ends of the fixed block are slidably connected with support columns, one side of the two support columns is fixedly connected with a sliding column, and one side of the support column close to the lower sliding groove is provided with saw teeth.

[0006] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, wherein: a fixing rod is fixedly connected to the fixing frame, a fixing stud is threadedly connected to the fixing rod, a rubber pad is provided at one end of the fixing stud, and the rubber pad is used to contact the patient.

[0007] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, wherein: a first straight slide groove, an oblique slide groove, and a second straight slide groove are provided on both sides of the sliding block, the first straight slide groove, the oblique slide groove, and the second straight slide groove are connected to each other, and a horn groove is provided at one end of the first straight slide groove and the second straight slide groove, and the first straight slide groove, the oblique slide groove, the second straight slide groove, and the horn groove are slidably connected to the sliding column; When the sliding column is located in the first straight sliding groove, the corresponding supporting column slides out from the fixing block; When the sliding column is located in the second straight sliding groove, the corresponding supporting column slides into the fixing block.

[0008] As an optional solution of the scalp positioning and marking device for cranial brain surgery described in the present invention, wherein: the interior of the fixed block is rotatably connected to a rotating tube, one end of the rotating tube is fixedly connected to a first gear, the interior of the rotating tube is slidably connected to a block, one side of the block is fixedly connected to a screw, the screw is threaded with a limiting block, and one end of the screw is used to interfere with the saw teeth.

[0009] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, wherein: a limiting groove is opened on one side of the limiting block, the limiting groove is opened in the fixed block, a control rod is slidably connected in the limiting groove, one end of the control rod is slidably connected to a sealing chamber, a second spring is arranged between the control rod and the sealing chamber, and one end of the sealing chamber is connected to a first air pipe.

[0010] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, wherein: a first rack is fixedly connected to the lower side of the sliding block, a triangular interference block is provided on one side of the first rack, a second rack is provided on one side of the triangular interference block, the first rack is used to mesh with the upper side of the first gear, the second rack is used to mesh with the lower side of the first gear, and the triangular interference block is used to interfere with the control rod.

[0011] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, wherein: the top end of the support column is fixedly connected to a first rack, one side of the first rack is meshedly connected to a second gear, the second gear is rotationally connected to the inside of the fixed block, and the other side of the second gear is meshedly connected to the second rack.

[0012] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, wherein: the upper end of the second rack is fixedly connected to a third spring, the other end of the third spring is fixedly connected to a sealing block, the sealing block is slidably connected to an air chamber, the air chamber is fixedly installed inside the fixed block, and one end of the air chamber is connected to a second air pipe.

[0013] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, one end of the second air tube is connected to a plurality of airbags, and the plurality of airbags are all arranged at the lower end of the support column, and the airbags are used to increase the contact area with the patient.

[0014] As an optional solution of the scalp positioning and marking device for cranial surgery described in the present invention, the airbag located below the saw teeth is connected to the first air tube, and a tension spring is arranged inside the airbag located below the saw teeth.

[0015] The present invention has the following beneficial effects: 1. The scalp positioning and marking device for cranial surgery can drive the sliding block and the mounting tube under the sliding block to slide together with the brush through the sliding of the control block, so that the brush can contact the patient to draw lines. At the same time, the brush is slidably connected to the mounting tube, and the first spring is set, so that during the process of drawing lines, when the brush contacts the patient's scalp, the brush can always fit the patient's scalp, thereby preventing the brush from not contacting the patient's scalp during the process of drawing lines.

[0016] 2. The scalp positioning and marking device for cranial surgery cooperates with the sliding column through the first straight sliding groove, the oblique sliding groove and the second straight sliding groove provided on the sliding block, so that the sliding column can drive the supporting column to slide up and down, so that the line of sight of the brush will not be affected by the supporting column during the process of marking the patient's scalp; Moreover, through the design of two support columns, when one of the support columns is retracted into the fixed block, the other support column will provide support, ensuring that there is always one support column supporting the fixed block. Through such a design, the position of the fixed block can be more stable, and the line of sight and the brush will not be affected during the drawing process.

[0017] 3. The scalp positioning and marking device for cranial surgery has a larger contact area between the device and the patient through the design of the airbag, which makes the position of the fixing block more stable. At the same time, a second spring is provided in one of the airbags, and the airbag is connected to the first air tube. When the brush passes through the position of the airbag, the airbag can be contracted, and the other airbags will not be affected. Through such a design, the line of sight and the brush will not be affected during the line drawing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the fixed block structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the sliding structure of the control block of the present invention.

[0021] Figure 4 It is a schematic diagram of the internal structure of the fixing block of the present invention.

[0022] Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the gas bin of the present invention.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the rotating tube of the present invention.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the sealed chamber of the present invention.

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the installation pipe of the present invention.

[0027] Fig.10 It is a schematic diagram of the sliding column structure of the present invention.

[0028] Fig.11 It is a schematic diagram of the cross-sectional structure of the airbag of the present invention.

[0029] Fig.12 It is a schematic diagram of the planar structure of the sliding block of the present invention.

[0030] In the figure: 1, fixing frame; 11, fixing rod; 12, fixing stud; 13, rubber cushion; 2, fixing block; 21, upper slide; 22, lower slide; 23, sliding block; 24, first straight slide; 25, inclined slide; 26, second straight slide; 27, speaker slot; 28, control block; 29, first matching rack; 210, second matching rack; 211, triangular interference block; 212, mounting tube; 213, paintbrush; 214, first spring; 3, Limiting block; 31. screw rod; 32. block; 33. rotating tube; 34. first gear; 35. limiting slide groove; 36. control rod; 37. sealing chamber; 38. second spring; 39. first air pipe; 4. support column; 41. sliding column; 42. first rack; 43. second gear; 44. second rack; 45. air chamber; 46. second air pipe; 47. sawtooth; 48. air bag; 49. tension spring; 410. third spring; 411. sealing block. DETAILED DESCRIPTION

[0031] 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.

[0032] For example, see Figure 1-Figure 12 The present invention discloses a scalp positioning and marking device for cranial brain surgery, comprising a fixing frame 1, a fixing block 2 is connected to one side of the fixing frame 1, an upper slide groove 21 is provided on the upper side of the fixing block 2, a lower slide groove 22 is provided on the lower side of the fixing block 2, a sliding block 23 is slidably connected inside the fixing block 2, a control block 28 is fixedly connected to the upper side of the sliding block 23, the sliding block 23 can be controlled to slide by the control block 28, and the sliding track of the control block 28 can be limited by the setting of the upper slide groove 21, the control block 28 is slidably connected to the upper slide groove 21, a mounting tube 212 is provided on the lower side of the sliding block 23, the mounting tube 212 is slidably connected to the lower slide groove 22, the lower slide groove 22 is provided, the sliding block 23 can drive the mounting tube 212 to slide together during the sliding process, a paintbrush 213 is slidably connected inside the mounting tube 212, a first spring 214 is provided between the mounting tube 212 and the paintbrush 213, see Fig. 9 The design of the first spring 214 between the brush 213 and the mounting tube 212 allows the brush 213 to more closely fit the contour of the scalp when the sliding block 23 slides to draw lines on the scalp, thereby preventing the brush 213 from failing to contact the scalp. Both ends of the fixed block 2 are slidably connected with support columns 4. Through the design of the support columns 4, the support columns 4 can directly contact the patient, thereby providing a relatively stable platform for the fixed block 2. One side of the two support columns 4 is fixedly connected with a sliding column 41, and the side of the support column 4 close to the lower sliding groove 22 is provided with serrations 47.

[0033] A fixing rod 11 is fixedly connected to the fixing frame 1, and a fixing stud 12 is threadedly connected to the fixing rod 11. A rubber pad 13 is provided at one end of the fixing stud 12. The rubber pad 13 is used to contact the patient. Through the design of the rubber pad 13, the fixing stud 12 will not hurt the patient when it contacts the patient.

[0034] First confirm the position where the line needs to be drawn, then set up the fixing frame 1 on the patient, and then rotate the fixing stud 12 so that the fixing stud 12 drives the rubber pad 13 to move toward the patient's head, so that the rubber pad 13 contacts the patient's head, and at the same time, the fixing block 2 can be stabilized under the action of the support column 4, so that the device can be fixed; after the device is fixed, slide the control block 28 by hand, so that the control block 28 can drive the sliding block 23 and the mounting tube 212 and the brush 213 to slide, so that the brush 213 can draw lines on the patient's scalp.

[0035] In this embodiment: during the line drawing process, the patient's scalp may have a certain curvature. Under the action of the first spring 214, the paintbrush 213 can always be in contact with the patient's scalp. When the curvature of the patient's head is large, the paintbrush 213 will slide into the mounting tube 212, causing the first spring 214 to deform. At the same time, when the curvature is small, under the action of the first spring 214, the paintbrush 213 can slide to the outside of the mounting tube 212, so that the paintbrush 213 can always be in contact with the patient's scalp, thereby preventing the line from being interrupted during the line drawing process and the paintbrush 213 from not being in contact with the patient's scalp.

[0036] Embodiment 2: This embodiment is intended to promote the solution of the problem that the support column 4 may affect the line of sight during the line drawing process. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 12 , a first straight slide groove 24, an oblique slide groove 25, and a second straight slide groove 26 are provided on both sides of the sliding block 23, the first straight slide groove 24, the oblique slide groove 25, and the second straight slide groove 26 are connected to each other, and a horn groove 27 is provided at one end of the first straight slide groove 24 and the second straight slide groove 26. Through the design of the horn groove 27, when the sliding block 23 slides, the sliding column 41 can slide into the first straight slide groove 24 or the second straight slide groove 26 more easily through the horn groove 27, and the first straight slide groove 24, the oblique slide groove 25, the second straight slide groove 26, and the horn groove 27 are slidably connected with the sliding column 41; When the sliding column 41 is located in the first straight slide groove 24, the corresponding support column 4 slides out from the fixed block 2; When the sliding column 41 is located in the second straight sliding groove 26 , the corresponding supporting column 4 slides into the fixing block 2 .

[0037] The fixed block 2 is internally rotatably connected with a rotating tube 33, one end of which is fixedly connected with a first gear 34, and the rotating tube 33 is internally slidably connected with a block 32, and one side of the block 32 is fixedly connected with a screw 31. Through the design of the block 32, the rotating tube 33 can drive the block 32 to rotate together during the rotation process, so that the screw 31 can rotate in the limiting block 3, so that the screw 31 slides to the right, so that the right end of the screw 31 can contact the sawtooth 47, so as to achieve the effect of fixing the support column 4. The screw 31 is threadedly connected with the limiting block 3, and one end of the screw 31 is used to contact the sawtooth 47. Figure 7 By designing that one end of the screw rod 31 abuts against the saw teeth 47, the position of the support column 4 can be fixed to prevent the support column 4 from sliding into the fixed block 2 during the line drawing process.

[0038] See Figure 2 In the process of driving the sliding block 23 to slide to the right, the control block 28 makes the horn groove 27 at one end of the second straight groove 26 contact the sliding column 41 located on the support column 4 in the fixed block 2, so that the sliding column 41 can slide in the second straight groove 26, and at the same time drive the first gear 34 to mesh with the second matching rack 210, so that the first gear 34 drives the screw rod 31 to rotate, so that the screw rod 31 releases the resistance to the saw teeth 47, so that the support column 4 can slide; see Figure 4 , then the sliding column 41 slides into the inclined slot 25, and under the guidance of the inclined slot 25, the sliding column 41 drives the support column 4 to slide to the outside of the fixed block 2. When the sliding column 41 slides into the first straight slot 24, the support column 4 is already in contact with the patient. When the sliding column 41 slides in the first straight slot 24, the first gear 34 engages with the first matching rack 29, so that the first gear 34 drives the screw rod 31 to reverse, so that the screw rod 31 again contacts the saw teeth 47, thereby fixing the support column 4, so that the support column 4 can support the fixed block 2 without sliding into the fixed block 2.

[0039] At this time, both support columns 4 are in contact with the patient. Through such a design, there will be no idle period in the support of the support column 4 to the fixed block 2, so that the fixed block 2 can always be in a stable state; as the sliding block 23 continues to slide, the horn groove 27 at one end of the first straight groove 24 on the other side of the sliding block 23 contacts the sliding column 41 on the corresponding support column 4, so that the sliding column 41 slides in the first straight groove 24, and at the same time, the screw 31 is released from the interference with the corresponding sawtooth 47, so that the support column 4 can slide, and then when the sliding column 41 slides into the corresponding inclined groove 25, the support column 4 can slide upward, so that the support column 4 can be retracted into the fixed block 2, and at the same time, when the sliding column 41 slides into the corresponding second straight groove 26, the first gear 34 on the other side will mesh with the corresponding second matching rack 210, so that the screw 31 will fix the support column 4 that slides into the fixed block 2.

[0040] In this embodiment: through the sliding of the sliding block 23, the support columns 4 on both sides can alternately support the fixed block 2, and at the same time, through the cooperation between the screw 31 and the serration 47, the position of the support column 4 can be restricted to prevent the support column 4 in the fixed block 2 from slipping and the support column 4 from sliding into the fixed block 2, so that the position of the fixed block 2 can always be in a relatively stable state, preventing the fixed block 2 from shaking during the line drawing process, so that the line drawing process will not be affected by the support column 4, and at the same time, during the alternation of the support columns 4, the two support columns 4 will support the fixed block 2 to prevent the situation where the two support columns 4 are not in contact with the patient, and further ensure that the line of sight and the brush 213 will not be affected during the line drawing process.

[0041] Embodiment 3: This embodiment is intended to promote the solution of the problem that the air bag 48 under the sawtooth 47 may affect the brush 213 and the line of sight during the line drawing process. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 12 A limiting groove 35 is provided on one side of the limiting block 3, and the limiting groove 35 is provided in the fixed block 2. A control rod 36 is slidably connected in the limiting groove 35, and one end of the control rod 36 is slidably connected to a sealing chamber 37. A second spring 38 is provided between the control rod 36 and the sealing chamber 37, and the second spring 38 is a tension spring. One end of the sealing chamber 37 is connected to a first air pipe 39.

[0042] A first rack 42 is fixedly connected to the lower side of the sliding block 23, a triangular interference block 211 is provided on one side of the first rack 42, a second rack 44 is provided on one side of the triangular interference block 211, the first rack 42 is used to mesh with the upper side of the first gear 34, the second rack 44 is used to mesh with the lower side of the first gear 34, the triangular interference block 211 is used to interfere with the control rod 36, and both sides of the triangular interference block 211 have inclined surfaces. Through such a design, both sides of the triangular interference block 211 can interfere with the control rod 36.

[0043] A first rack 42 is fixedly connected to the top of the support column 4 , one side of the first rack 42 is meshed with a second gear 43 , the second gear 43 is rotatably connected to the inside of the fixed block 2 , and the other side of the second gear 43 is meshed with a second rack 44 .

[0044] The upper end of the second rack 44 is fixedly connected to the third spring 410, the other end of the third spring 410 is fixedly connected to the sealing block 411, the sealing block 411 is slidably connected to the air chamber 45, the air chamber 45 is fixedly installed inside the fixed block 2, and one end of the air chamber 45 is connected to the second air pipe 46.

[0045] One end of the second air tube 46 is connected to a plurality of air bags 48 , which are all arranged at the lower end of the support column 4 , and the air bags 48 are used to increase the contact area with the patient.

[0046] The airbag 48 located below the sawtooth 47 is connected to the first air pipe 39. A tension spring 49 is provided inside the airbag 48 located below the sawtooth 47. Through the design of the tension spring 49, when the gas in the airbag 48 below the sawtooth 47 is subsequently sucked through the first air pipe 39, the other airbags 48 will not be affected by the action of the tension spring 49.

[0047] See Figure 6 When the support column 4 slides downward, it will drive the first rack 42 to slide downward together, so that the first rack 42 drives the second gear 43. When the second gear 43 rotates, it will drive the second rack 44 on the other side, so that the second rack 44 slides upward, so that the second rack 44 pushes the third spring 410 and the sealing block 411 to slide inside the air chamber 45, and squeezes the gas in the air chamber 45, so that the gas inside the air chamber 45 enters into each air bag 48 through the second air pipe 46. The contact area between the support column 4 and the patient is increased by the expansion of the air bag 48, so that the fixing block 2 can be more stable, so that the paintbrush 213 can be more stable during the line drawing process; At the same time, when the support column 4 slides into the fixed block 2, the first rack 42 will slide upward, so that the second rack 44 pulls the third spring 410 and the sealing block 411 to slide downward in the air chamber 45, thereby sucking the gas in each airbag 48 through the second air pipe 46, causing the airbag 48 to shrink. At the same time, through the design of the third spring 410, after each airbag 48 shrinks, as the support column 4 continues to rise, the second rack 44 will continue to slide downward. Through the design of the third spring 410, the second rack 44 will pull the third spring 410 to deform, thereby preventing jamming. It should be noted that only after the airbag 48 shrinks, the third spring 410 will be deformed as the second rack 44 continues to pull it.

[0048] See Figure 8 During the sliding process, the sliding block 23 will drive the triangular resistance block 211 to slide together. When the triangular resistance block 211 slides to the control rod 36, the guide of the control rod 36 by the inclined surface of the triangular resistance block 211 will cause the other end of the control rod 36 to slide to the left in the sealing chamber 37, so that the sealing chamber 37 is sucked through the first air pipe 39, and the air bag 48 under the sawtooth 47 is contracted. Because the air bag 48 under the sawtooth 47 is provided with a tension spring 49, the first air pipe 39 is in the process of inhaling. Under the action of the tension spring 49, the air bag 48 under the sawtooth 47 is contracted, and the gas in other air bags 48 will not be lost, so that other air bags 48 can always be in a normal expansion state; when the triangular resistance block 211 slides over the control rod 36, the control rod 36 slides to the right in the sealing chamber 37 under the pull of the second spring 38, thereby squeezing the gas in the sealing chamber 37, so that the gas in the sealing chamber 37 enters the airbag 48 below the serration 47 through the first air pipe 39, and the pulling force of the second spring 38 is greater than the pulling force of the second tension spring 49, so that the gas in the sealing chamber 37 can enter the airbag 48; it should be noted that when the airbag 48 is taking in air, under the action of the tension spring 49, the other airbags 48 are expanded first, and the airbag 48 below the serration 47 will not expand until the other airbags 48 are expanded.

[0049] In this embodiment: by contracting the airbag 48 under the sawtooth 47, the brush 213 will not be affected by the airbag 48 when passing through, and the airbag 48 can also be prevented from affecting the line of sight. At the same time, after the brush 213 passes through the support column 4, the cooperation between the second spring 38 and the first air tube 39 allows the airbag 48 to expand again, further ensuring that the line of sight and the brush 213 will not be affected during the line drawing process.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A scalp positioning and marking device for cranial surgery, comprising a fixing frame (1), one side of the fixing frame (1) is connected to a fixing block (2), characterized in that An upper slide groove (21) is provided on the upper side of the fixed block (2), a lower slide groove (22) is provided on the lower side of the fixed block (2), a sliding block (23) is slidably connected inside the fixed block (2), a control block (28) is fixedly connected on the upper side of the sliding block (23), the control block (28) is slidably connected to the upper slide groove (21), a mounting tube (212) is provided on the lower side of the sliding block (23), the mounting tube (212) is slidably connected to the lower slide groove (22), a paintbrush (213) is slidably connected inside the mounting tube (212), and a first spring (214) is provided between the mounting tube (212) and the paintbrush (213); Both ends of the fixed block (2) are slidably connected to support columns (4), one side of the two support columns (4) is fixedly connected to a sliding column (41), and one side of the support columns (4) close to the lower sliding groove (22) is provided with saw teeth (47).

2. A scalp positioning and marking device for cranial surgery according to claim 1, characterized in that: A fixing rod (11) is fixedly connected to the fixing frame (1), a fixing stud (12) is threadedly connected to the fixing rod (11), a rubber cushion (13) is provided at one end of the fixing stud (12), and the rubber cushion (13) is used for contacting a patient.

3. A scalp positioning and marking device for cranial surgery according to claim 1, characterized in that: A first straight slide groove (24), an inclined slide groove (25) and a second straight slide groove (26) are provided on both sides of the sliding block (23); the first straight slide groove (24), the inclined slide groove (25) and the second straight slide groove (26) are connected to each other; one end of the first straight slide groove (24) and the second straight slide groove (26) are provided with a trumpet groove (27); the first straight slide groove (24), the inclined slide groove (25), the second straight slide groove (26) and the trumpet groove (27) are slidably connected to the sliding column (41); When the sliding column (41) is located in the first straight sliding groove (24), the corresponding supporting column (4) slides out from the fixing block (2); When the sliding column (41) is located in the second straight sliding groove (26), the corresponding supporting column (4) slides into the fixed block (2).

4. A scalp positioning and marking device for cranial surgery according to claim 3, characterized in that: The fixed block (2) is rotatably connected to a rotating tube (33) inside, one end of the rotating tube (33) is fixedly connected to a first gear (34), the rotating tube (33) is slidably connected to a block (32) inside, one side of the block (32) is fixedly connected to a screw rod (31), the screw rod (31) is threadedly connected to a limiting block (3), and one end of the screw rod (31) is used to abut against the saw teeth (47).

5. A scalp positioning and marking device for cranial surgery according to claim 4, characterized in that: A limiting slide groove (35) is provided on one side of the limiting block (3), the limiting slide groove (35) is provided in the fixed block (2), a control rod (36) is slidably connected in the limiting slide groove (35), one end of the control rod (36) is slidably connected to a sealing chamber (37), a second spring (38) is provided between the control rod (36) and the sealing chamber (37), and one end of the sealing chamber (37) is connected to a first air pipe (39).

6. A scalp positioning and marking device for cranial surgery according to claim 5, characterized in that: A first mating rack (29) is fixedly connected to the lower side of the sliding block (23); a triangular interference block (211) is provided on one side of the first mating rack (29); a second mating rack (210) is provided on one side of the triangular interference block (211); the first mating rack (29) is used for meshing connection with the upper side of the first gear (34); the second mating rack (210) is used for meshing connection with the lower side of the first gear (34); and the triangular interference block (211) is used for interfering with the control rod (36).

7. A scalp positioning and marking device for cranial surgery according to claim 6, characterized in that: A first rack (42) is fixedly connected to the top of the support column (4), one side of the first rack (42) is meshedly connected to a second gear (43), the second gear (43) is rotationally connected to the inside of the fixed block (2), and the other side of the second gear (43) is meshedly connected to a second rack (44).

8. The scalp positioning and marking device for cranial surgery according to claim 7, characterized in that: The upper end of the second rack (44) is fixedly connected to a third spring (410), the other end of the third spring (410) is fixedly connected to a sealing block (411), the sealing block (411) is slidably connected to an air bin (45), the air bin (45) is fixedly mounted inside the fixed block (2), and one end of the air bin (45) is connected to a second air pipe (46).

9. The scalp positioning and marking device for cranial surgery according to claim 8, characterized in that: One end of the second air tube (46) is connected to a plurality of air bags (48), and the plurality of air bags (48) are all arranged at the lower end of the support column (4), and the air bags (48) are used to increase the contact area with the patient.

10. The scalp positioning and marking device for cranial surgery according to claim 9, characterized in that: The air bag (48) located below the saw teeth (47) is in communication with the first air pipe (39), and a tension spring (49) is provided inside the air bag (48) located below the saw teeth (47).

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