A brain surgery auxiliary treatment device for neurosurgery

Abstract

The application relates to the field of neurosurgical medical equipment and discloses a brain operation auxiliary treatment device for neurosurgery, which comprises a fixing base, a gear groove and a ratchet groove are arranged in the fixing base, a connecting block is slidably connected in the fixing base, a locking cavity is arranged in the connecting block, a clamping assembly is slidably connected to the top end of the connecting block, a locking assembly is arranged in the locking cavity, the locking assembly comprises a ratchet pawl, one end of the ratchet pawl is in sliding contact with a limiting plate, the limiting plate is in abutment with a limiting cam on one side, and the limiting cam is rotationally connected to an adjusting block. In the application, the fixing base is divided into the gear groove and the ratchet groove, the connecting block bears the clamping assembly and is internally provided with the locking cavity, the structure realizes clear function division, and the transmission and the locking mechanism are prevented from interfering. In cooperation with the ratchet pawl, the limiting plate, a return spring and a reverse ratchet, the first return spring always pushes the limiting plate to abut against the limiting cam, so that the locking can be instantly responded.

Description

Technical Field

[0001] This invention relates to the field of neurosurgical medical devices, and more particularly to a neurosurgical brain surgery auxiliary treatment device. Background Technology

[0002] As neurosurgery advances towards greater precision and minimally invasive techniques, the requirements for stability and adaptability in patient head positioning during brain surgery are constantly increasing. As a result, brain surgery auxiliary devices are gradually becoming core surgical aids. Early devices primarily relied on simple support frames, providing only basic support and failing to meet the adjustment needs of different patient head shapes and surgical positions. While later devices incorporated height adjustment and clamping functions, limitations remained in structural synergy and ease of operation. Currently, mainstream products are widely used in intracranial tumor resection and cerebrovascular surgery, requiring both long-term stable positioning during surgery and flexible adjustment during postoperative dressing changes. However, the deficiencies in locking reliability, clamping adaptability, and operational safety of existing products are becoming key issues restricting surgical efficiency and patient safety, necessitating structural optimization to overcome these technological bottlenecks.

[0003] Most current surgical devices employ a one-way locking mechanism for positioning. This design limits the device to height fixation in only one direction. In complex surgical scenarios, surgeons struggle to adjust the device flexibly according to the patient's head shape and surgical approach requirements, significantly restricting its applicability. Furthermore, manual calibration poses a significant risk. Due to the stressful surgical environment and high-intensity work conditions, surgeons are highly susceptible to operational errors that prevent the locking structure from achieving the desired fixation. If the lock loosens, surgical instruments may deviate from their intended path, damaging critical nerves and blood vessels, significantly increasing the risk of serious complications such as intraoperative hemorrhage and nerve damage, and potentially even endangering the patient's life.

[0004] Therefore, a neurosurgical brain surgery adjuvant device is proposed to address the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, the present invention provides a neurosurgical brain surgery auxiliary treatment device, which aims to improve the problems of unreliable unidirectional locking and easy displacement after high adjustment in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a neurosurgical brain surgery auxiliary treatment device, comprising a fixed base, wherein a gear groove and a ratchet groove are provided in the fixed base, and a connecting block is slidably connected in the fixed base, wherein a locking cavity is provided in the connecting block, and a clamping component is slidably connected to the top of the connecting block; a locking component is provided in the locking cavity. The locking assembly includes a pawl, one end of which slides in contact with a limit plate, one side of which abuts against a limit cam, and the limit cam is rotatably connected to an adjusting block.

[0007] Preferably, the pawl is rotatably connected to the locking cavity, and the pawl is engaged with ratchet teeth, which are fixedly connected to both sides of the ratchet groove; a first return spring is fixedly connected to the other side of the limiting plate, and the other end of the first return spring is fixedly connected to the locking cavity.

[0008] Preferably, a gear is rotatably connected inside the connecting block, a rack meshes with the gear, and one end of the gear passes through the connecting block and is coaxially and fixedly connected to a handwheel, while the rack is fixedly connected in the gear groove.

[0009] Preferably, an adjusting shaft and a first fixing block are fixedly connected to the adjusting block, a limiting cam and a rotating block are rotatably connected to the adjusting shaft, a locking groove is provided on one side of the rotating block, and the trigger end of the locking component is slidably contacted in the locking groove.

[0010] Preferably, the locking assembly includes a locking block, which is slidably connected to a first fixing block, and a third return spring is fixedly connected to one end of the locking block, while the other end of the third return spring is fixedly connected to the first fixing block.

[0011] Preferably, a second return spring is fixedly connected to one side of the pawl, and the other end of the second return spring is fixedly connected to the locking cavity.

[0012] Preferably, the two sides of the ratchet groove are oriented in opposite directions.

[0013] Preferably, the bottom of the fixed base is fixedly connected to a support foot, and a cross groove is provided inside the fixed base, with a connecting block slidably connected to the cross groove.

[0014] Preferably, the clamping assembly includes a sliding block, which is slidably connected to the top end of the connecting block, and a second fixing block is slidably connected inside the sliding block, with a clamping block hinged to the second fixing block.

[0015] Preferably, a medical sponge is fixedly connected to the end of the second fixing block and the clamping block facing the patient's brain, and a pressure detection element is fixedly connected to the second fixing block and the clamping block.

[0016] The present invention has the following beneficial effects: 1. In this invention, the fixed base is equipped with gear grooves and ratchet grooves, and the connecting block carries the clamping assembly and has a locking cavity, achieving a clear division of functions and avoiding interference between the transmission and locking mechanisms. With the design of the pawl, limiting plate, return spring, and reverse ratchet, the first return spring pushes the limiting plate to always abut against the limiting cam, ensuring immediate locking response; the second return spring pulls the pawl and ratchet into deep engagement, preventing vibration and loosening; the reverse ratchet allows the connecting block to slide and lock bidirectionally, adapting to different surgical height requirements, providing a stable and flexible foundation for surgical head positioning, and meeting the core requirement of precise positioning.

[0017] 2. In this invention, the height of the connecting block can be adjusted by medical staff with one hand via a handwheel-driven rack and pinion transmission, without the need for additional tools. The upper limit cam of the adjusting block rotates synchronously with the rotating block, and the third reset spring pushes the locking block into the locking groove of the rotating block, which can quickly fix the angle and prevent accidental displacement of the parts. The entire operation process is simplified, reducing manual calibration and adjustment steps and lowering the difficulty of operation.

[0018] 3. In this invention, the support foot and anti-slip pad increase the friction between the device and the operating table, preventing overall displacement; the clamping assembly adapts to different patient head shapes through the sliding block, the adjustable second fixing block and the hinged clamping block; from device stability and patient fit to surgical safety, it fully guarantees the stringent requirements of neurosurgery. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 2 This is a schematic diagram of the structure of the fixed base of a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 3 This is a schematic diagram of the locking cavity of a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 4 This is a schematic diagram of the gear connection relationship in a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 5 This is a schematic diagram showing the connection relationship of the locking block in a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 6 This is a schematic diagram of the positioning component of a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 7 This is a schematic diagram of the clamping assembly of a neurosurgical brain surgery auxiliary treatment device proposed in this invention; Figure 8 This is a partial structural diagram of a neurosurgical brain surgery auxiliary treatment device proposed in this invention, in its locked state.

[0020] Legend: 1-Fixed base; 2-Gear groove; 3-Ratchet groove; 4-Connecting block; 5-Locking cavity; 6-Clamping assembly; 7-Locking assembly; 8-Pawl; 9-Limiting plate; 10-Limiting cam; 11-Adjusting block; 12-First return spring; 13-Ratchet; 14-Gear; 15-Rack; 16-Handwheel; 17-Adjusting shaft; 18-First fixed block; 19-Rotating block; 20-Positioning groove; 21-Positioning assembly; 22-Positioning block; 23-Third return spring; 24-Second return spring; 25-Supporting foot; 26-Sliding block; 27-Second fixed block; 28-Clamping block; 29-Cross slide groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1 refer to Figures 1 to 3 and Figure 5 A neurosurgical brain surgery auxiliary treatment device, the basic supporting component being a fixed base 1. The fixed base 1 has independent gear grooves 2 for transmission adjustment and ratchet grooves 3 for locking and positioning. A cross-shaped slide groove 29 is also provided on the inner side of the fixed base 1, within which a connecting block 4, whose position can be adjusted vertically, is slidably connected. The independent gear grooves 2 and ratchet grooves 3 prevent interference between the transmission mechanism and the locking mechanism, ensuring stable adjustment and positioning functions. The cross-shaped slide groove 29 restricts the sliding direction of the connecting block 4, preventing it from shifting during height adjustment and ensuring the positioning accuracy of the subsequent clamping assembly 6. The bottom end face of the fixed base 1 has four support feet 25 evenly distributed along the four corners to support the overall device. The support feet 25 are fixed to the fixed base 1 by laser welding or threaded connection. Each support foot 25 has a medical-grade anti-slip pad fixedly connected to its bottom end face. The surface of the anti-slip pad has a diamond-shaped anti-slip texture, which can effectively increase the friction with the operating table surface and prevent the device from shifting during the operation. At the same time, the medical-grade material meets the surgical hygiene standards and avoids the risk of cross-infection.

[0023] The connecting block 4 has a locking cavity 5 inside to accommodate the locking component 7. At the same time, the top surface of the connecting block 4 is slidably connected to a clamping component 6 for stabilizing and fixing the patient's head via a bidirectional screw. The locking cavity 5 is equipped with the locking component 7 to limit the sliding displacement of the connecting block 4. The locking assembly 7 includes pawls 8. The bottom and top ends of both pawls 8 slide in contact with limit plates 9. A limit cam 10 for adjusting the position of the limit plate 9 is tightly abutted against the side of the limit plate 9 facing the center of the connecting block 4. The limit cam 10 is rotatably connected to an adjusting shaft 17, which is fixedly connected to an adjusting block 11. The adjusting block 11 is fixed to the inner wall of the locking cavity 5 in the connecting block 4 by bolts or other fixing methods. A first fixing block 18 is also fixedly connected to the adjusting block 11. The adjusting shaft 17 is vertically distributed on the upper and lower sides of the first fixing block 18. A limit cam 10 and a rotating block 19 are rotatably connected sequentially to its outer peripheral wall, and the two are fixedly connected along the axis of the adjusting shaft 17 to ensure that the limit cam 10 rotates synchronously when the rotating block 19 is rotated, avoiding linkage delay and achieving real-time adjustment of the limiting effect of the limit plate 9 on the pawls 8. The rotating block 19 faces the adjusting block 11. A locking groove 20 is provided on one end face. The inner wall of the locking groove 20 forms a sliding contact with the trigger end of the locking component 21, i.e., the locking block 22. It can be fixed after the angle of the rotating block 19 is adjusted, so that the limiting plate 9 abutting the limiting cam 10 maintains the limiting effect on the pawl 8, thereby ensuring that the connecting block 4 can be fixed at a certain height and avoiding accidental sliding during surgery. refer to Figure 2 , Figure 3 and Figure 8 The pawl 8 is rotatably connected to the inner wall of the locking cavity 5 via a rotating shaft, and the teeth of the pawl 8 and the ratchet 13 form a stable meshing engagement. The ratchet 13 is connected to the inner walls on both sides of the ratchet groove 3 by welding or bolting. A first reset spring 12 for driving the limit plate 9 to automatically reset is fixedly connected to the side of the limit plate 9 away from the limit cam 10. The other end of the first reset spring 12 is fixedly connected to the inner wall of the locking cavity 5. In its natural state, the first reset spring 12 can push the limit plate 9 to always keep it in close contact with the limit cam 10 through its own elastic force, ensuring the responsiveness of the locking adjustment and avoiding component linkage delay. refer to Figures 2 to 4A second return spring 24 is fixedly connected to one side of the pawl 8 to maintain the engagement stability of the pawl 8. The other end of the second return spring 24 is fixedly connected to the inner wall of the locking cavity 5. When the pawl 8 is not subject to the force of the limiting plate 9, the second return spring 24 can pull the pawl 8 with its elastic force to keep the pawl 8 engaged with the ratchet 13, avoiding loosening of the engagement due to slight vibration of the device during surgery, and ensuring that the connecting block 4 will not have a height shift after locking. The ratchet 13 on both sides of the inner wall of the ratchet groove 3 has opposite tooth tips. The tooth tip of one side of the ratchet 13 points downward along the height direction of the fixed base 1, and the other side points upward along the same direction. This design allows the pawl 8 to precisely engage with the ratchet 13 on both sides when the connecting block 4 slides bidirectionally along the fixed base 1, realizing immediate locking and fixation after the connecting block 4 is displaced, breaking the limitation of unidirectional adjustment, adapting to the height requirements under different surgical positions, and improving adjustment flexibility.

[0024] A transmission gear 14 is rotatably connected inside the connecting block 4. The teeth of the gear 14 mesh with the rack 15, and one end of the gear 14 passes through the connecting block 4 and is coaxially fixedly connected to the handwheel 16. The handwheel 16 is located outside the connecting block 4 and its surface is provided with anti-slip texture to prevent slippage due to sweaty hands during surgery, making it easier for medical staff to hold and adjust with one hand and reducing the difficulty of operation. The rack 15 is connected to the inner wall of the gear groove 2 by integral molding. The integral molding method can greatly improve the structural strength and prevent the connection between the rack 15 and the gear groove 2 from breaking. When the medical staff rotates the handwheel 16, it can drive the gear 14 to rotate around its own axis. Through the meshing transmission of the gear 14 and the rack 15, the connecting block 4 is driven to slide smoothly along the height direction of the fixed base 1, avoiding adjustment jamming and achieving the accuracy of the height adjustment of the clamping component 6. The core component of the positioning assembly 21 is the positioning block 22. The positioning block 22 is slidably connected to a sliding cavity opened within the first fixing block 18. The cross-sectional dimensions of the sliding cavity match the cross-sectional dimensions of the bottom of the positioning block 22, ensuring smooth and unobstructed sliding of the positioning block 22 and preventing the surgical process from being affected by component jamming. Furthermore, a third reset spring 23 for driving the positioning block 22 to reset is fixedly connected to one end of the positioning block 22 away from the positioning slot 20. The other end of the third reset spring 23 is fixedly connected to the side wall of the sliding cavity inside the first fixing block 18. The other end of the positioning block 22 away from the third reset spring 23... The end is divided into a wedge-shaped end and a square end. When the third reset spring 231 pushes the locking block 22, the wedge-shaped end of the locking block 22 will extend into the locking groove 20 opened in the rotating block 19, completing the locking of the rotating block 19 and preventing the rotating block 19 from rotating accidentally, further ensuring the height stability of the connecting block 4. At this time, the square end of the locking block 22 will also extend out of the first fixing block 18. By pressing the square end of the locking block 22, the locking block 22 can compress the third reset spring 23 and release the locking state of the wedge end on the rotating block 19. No additional tools are required, the operation is convenient, and the surgical adjustment time is saved. Example 2

[0025] refer to Figure 7 This second embodiment is a further supplement and explanation of the first embodiment. Specifically, the clamping assembly 6 includes a sliding block 26 for lateral position adjustment. The sliding block 26 is slidably connected to the inner groove at the top of the connecting block 4. A bidirectional screw is rotatably connected to the inner groove. The sliding block 26 is threadedly connected to the screw. One end of the bidirectional screw passes through the connecting block 4 and is fixedly connected to the adjustment knob. The distance between the two sliding blocks 26 can be adjusted by rotating the adjustment knob, which can adapt to the head size of different patients without replacing the clamping components, improving the versatility of the device and reducing preoperative preparation time. A second fixing block 27 with lateral position adjustment is slidably connected inside the sliding block 26. Both the sliding block 26 and the second fixing block 27 are provided with pin holes. After aligning the pin holes on the second fixing block 27 with the pin holes at different positions on the sliding block 26, the pins are inserted to fix and adjust the position of the second fixing block 27 to adapt to the head size of different patients.

[0026] The second fixing block 27, located near the patient's head, is hinged to an arc-shaped clamping block 28 via a hinge or similar means. The inner wall of the clamping block 28 conforms to the physiological contour of the human head, better adapting to the different curvatures of patients' heads. The clamping block 28 can rotate flexibly around the hinge and is fixed to the second fixing block 27 via pins or similar means, balancing clamping stability and patient comfort. Simultaneously, both the second fixing block 27 and the clamping block 28, facing the patient's brain, are secured with medical sponges using adhesive. These sponges are soft, breathable, and resistant to deformation, reducing friction damage to the scalp and preventing localized heat buildup, thus improving the patient's experience during surgery. Furthermore, both blocks have miniature pressure sensors bolted to their inner walls. These sensors monitor the clamping pressure in real time and transmit the data to a display terminal, allowing medical staff to adjust the clamping force promptly. This ensures that excessive clamping force during surgery or dressing changes does not cause brain compression injury, while insufficient pressure prevents the head from loosening.

[0027] Working Principle: This neurosurgical brain surgery auxiliary treatment device uses a fixed base 1 as the core support and stable foundation of the entire device. The support feet 25 at the bottom of the base provide stable placement for the device, preventing overall displacement during surgery. During the initial height adjustment, medical staff rotate the handwheel 16 on the outside of the connecting block 4, which drives the gear 14 inside the connecting block 4 to precisely mesh with the rack 15 in the gear groove 2, thereby causing the connecting block 4 to slide smoothly along the preset trajectory of the fixed base 1, ultimately achieving height adjustment of the connecting block 4 and its top clamping component 6.

[0028] After the height adjustment is completed, rotate the rotating block 19 on the adjusting block 11, which drives the limiting cam 10 to adjust the angle synchronously. At this time, the wedge-shaped end of the locking block 22 in the locking assembly 21 will be precisely locked into the locking groove 20 of the rotating block 19 under the pushing force of the third return spring 23, thereby fixing the angle of the rotating block 19. The pawl 8 in the locking cavity 5 inside the connecting block 4 will automatically mesh with the ratchet 13 in the ratchet groove 3. At the same time, under the continuous action of the first return spring 12, the limiting plate 9 will always maintain close contact with the limiting cam 10 connected to the adjusting block 11. Through the synergistic limiting effect of the two, the bidirectional locking of the connecting block 4 is achieved, thereby ensuring the long-term stability of the height of the connecting block 4.

[0029] If fine-tuning of the limiting state is required, the upper or lower locking block 22 can be pressed to release the locking state of the ratchet 13 and pawl 8 on one side, allowing the connecting block 4 to be adjusted only in height. After the height adjustment is completed, the spacing between the sliding blocks 26 on both sides of the top of the connecting block 4, the position of the second fixing block 27 within the sliding block 26, and the rotation angle of the arc-shaped clamping block 28 can be adjusted to adapt to the head shape and size of different patients, ultimately achieving a stable and close clamping of the patient's head, providing a reliable positioning basis for surgical operations.

[0030] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A neurosurgical brain surgery auxiliary treatment device, comprising a fixed base (1), characterized in that: The fixed base (1) is fixedly connected with a ratchet (13), and the fixed base (1) is slidably connected with a connecting block (4). The connecting block (4) is provided with a locking component (7) and an adjusting block (11), and a clamping component (6) is slidably connected to the top of the connecting block (4). The locking assembly (7) includes a pawl (8) that engages with a ratchet tooth (13), and one end of the pawl (8) slides in contact with a limiting plate (9). One side of the limiting plate (9) abuts against a limiting cam (10), and the limiting cam (10) is rotatably connected to an adjusting block (11).

2. The neurosurgical brain surgery auxiliary treatment device according to claim 1, characterized in that: The pawl (8) is rotatably connected to the locking cavity (5), which is located in the connecting block (4); the ratchet (13) is fixedly connected to both sides of the ratchet groove (3), which is located in both sides of the fixed base (1); a first reset spring (12) is fixedly connected to the other side of the limiting plate (9), and the other end of the first reset spring (12) is fixedly connected to the locking cavity (5).

3. The neurosurgical brain surgery auxiliary treatment device according to claim 1, characterized in that: A gear (14) is rotatably connected inside the connecting block (4). A rack (15) meshes with the gear (14). One end of the gear (14) passes through the connecting block (4) and is coaxially fixedly connected to a handwheel (16). The rack (15) is fixedly connected inside the gear groove (2). The gear groove (2) is opened inside the fixed base (1).

4. The neurosurgical brain surgery auxiliary treatment device according to claim 1, characterized in that: The adjusting block (11) is fixedly connected to the inner wall of the locking cavity (5), and the adjusting block (11) is fixedly connected to the adjusting shaft (17) and the first fixing block (18). The adjusting shaft (17) is rotatably connected to the limiting cam (10) and the rotating block (19). A slot (20) is provided on one side of the rotating block (19), and the trigger end of the slot assembly (21) is slidably contacted in the slot (20).

5. The neurosurgical brain surgery auxiliary treatment device according to claim 4, characterized in that: The locking component (21) includes a locking block (22), which is slidably connected to the first fixing block (18), and a third reset spring (23) is fixedly connected to one end of the locking block (22), and the other end of the third reset spring (23) is fixedly connected to the first fixing block (18).

6. The neurosurgical brain surgery auxiliary treatment device according to claim 1, characterized in that: A second return spring (24) is fixedly connected to one side of the pawl (8), and the other end of the second return spring (24) is fixedly connected to the locking cavity (5).

7. The neurosurgical brain surgery auxiliary treatment device according to claim 2, characterized in that: The two sides of the ratchet (13) inside the ratchet groove (3) are facing opposite directions.

8. The neurosurgical brain surgery auxiliary treatment device according to claim 1, characterized in that: The bottom of the fixed base (1) is fixedly connected to a support foot (25), and a cross groove (29) is provided inside the fixed base (1), and a connecting block (4) is slidably connected to the cross groove (29).

9. The neurosurgical brain surgery auxiliary treatment device according to claim 1, characterized in that: The clamping assembly (6) includes a sliding block (26), which is slidably connected to the top of the connecting block (4), and a second fixing block (27) is slidably connected inside the sliding block (26), and a clamping block (28) is hinged on the second fixing block (27).

10. A neurosurgical brain surgery auxiliary treatment device according to claim 9, characterized in that: Both the second fixing block (27) and the clamping block (28) have a medical sponge fixedly connected to the end facing the patient's brain, and both the second fixing block (27) and the clamping block (28) have a pressure detection device fixedly connected to them.

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