Spine operation bracket device for neurosurgery department

Abstract

The invention belongs to the technical field of spinal operation brackets, and particularly discloses a spinal operation bracket device for neurosurgery, which is provided with a body position pad, the body position pad is used for supporting the body position of a patient, the body position pad is provided with at least one group of adjusting pads, and each adjusting pad comprises an adjusting assembly and a supporting assembly. The adjusting assembly comprises a cam shaft assembly, a guide rail and a sliding block, the supporting assembly comprises a plurality of base bodies and a plurality of sets of auxiliary supporting pieces, the multiple sets of auxiliary supporting pieces are arranged in mounting grooves between every two adjacent base bodies in a one-to-one correspondence mode, each set of auxiliary supporting piece comprises a lifting mechanism, a driving mechanism and a plate body, and the output end is connected with a driving shaft; the driving mechanism converts sliding linear motion of the base bodies into rotation and drives the driving shaft to rotate through the output end, and after the base bodies slide, the plate bodies rise along with the telescopic ends to be located in the gaps between the two adjacent base bodies. The problem that an existing single cushion body only adjusts the distance but cannot adapt to individual spine characteristics is thoroughly solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of spinal surgery support, in particular to a spine surgery support device for neurosurgery. BACKGROUND

[0002] When the core performance of the nerve symptoms is nerve root or cauda equina nerve compression caused by lumbar disc herniation, spinal stenosis and other lesions, percutaneous transforaminal endoscopic discectomy (PTED) is performed based on the professional advantages of "nerve decompression and protection" to relieve the compression of the spine on the nerve. PTED is a local anesthesia performed on the lateral posterior of the patient's waist, guided by a C-arm X-ray machine, and a working cannula is placed into the spinal canal through the intervertebral foramen (natural nerve root passage), and then an endoscope is inserted to remove the protruding intervertebral disc and release the nerve root compression under direct vision.

[0003] The body position during PTED is usually in the prone position, the core of which is to fully expose the posterior / lateral posterior of the lumbar spine surgery area, while ensuring smooth breathing and no additional compression of the nerve root. However, compared with other spine surgeries, the "prone position" during PTED does not require a complex special support, mainly because: PTED is a local anesthesia, the patient is fully awake throughout the procedure, and the surgeon needs to judge whether the nerve root is being pulled based on the patient's feedback of whether the lower extremities are numb or in pain. Special support is usually used with general anesthesia (the patient is unconscious and cannot adjust himself), and the body position needs to be fixed by binding and rigid support. If a special support is used for PTED, it will limit the patient's lower extremity movement, seriously affecting the accuracy of the patient's feedback. Moreover, forcibly using a complex special support for PTED not only cannot improve the safety of the operation, but also increases the "body position setting time" and "patient discomfort" (such as the compression of the skin by rigid materials), and there is a problem of "excessive function".

[0004] Therefore, the existing body position pad device is often used as a spine surgery support for body position support during PTED, and the size of the single pad in the existing body position pad device is fixed, and the spacing between the single pads is adjusted for different body types of patients. However, this adjustment method can cause an imbalance in biomechanics due to insufficient individual support of the body position pad device for different body types of patients. This is mainly because the lumbar spine needs to maintain natural lordosis in the prone position to avoid increased nerve root tension, but the fixed size of the pad cannot accurately match the spine of different patients by adjusting the spacing between the pads. For example, for obese patients, only by increasing the spacing between the pads can the size of the pad be adjusted, but the size of the pad cannot be changed, which can increase the suspended area of the waist, increase the pressure of the intervertebral space, and increase the risk of disc herniation. Moreover, the spacing between the iliac crest and the pubic symphysis support points of obese patients is insufficient, and the abdominal pressure increases, which indirectly increases the congestion of the epidural venous plexus and affects the clarity of the surgical field. SUMMARY

[0005] To address the aforementioned problems, the purpose of this invention is to provide a spinal surgery support device for neurosurgery.

[0006] The technical solution of the present invention is: a spinal surgery support device for neurosurgery, having a positioning pad that supports the patient's position, the positioning pad having at least one set of adjustment pads, the adjustment pads including adjustment components and support components.

[0007] The adjustment assembly includes a camshaft assembly, a guide rail, and sliders. The camshaft assembly has a camshaft body with multiple sequentially distributed spiral cam grooves along its axial length. The guide rail is distributed along the axis of the camshaft body. Multiple sliders are slidably mounted on the guide rail, and each slider has an insert block. The insert blocks are correspondingly engaged in multiple sets of spiral cam grooves. When the camshaft body rotates, the insert blocks slide within the spiral cam grooves, and the sliders slide along the guide rail with the insert blocks to change the spacing between the sliders.

[0008] The support assembly includes multiple base bodies and multiple sets of auxiliary support components. The multiple base bodies are correspondingly mounted on the slider, and mounting grooves are provided on the opposite sides of two adjacent base bodies. The multiple sets of auxiliary support components are correspondingly arranged in the mounting grooves between two adjacent base bodies. Each set of auxiliary support components includes a lifting mechanism, a driving mechanism, and a plate. The lifting mechanism has a driving shaft and a telescopic end. The driving mechanism has an input end and an output end. The input end is connected to the base body and moves with the base body. The output end is connected to the driving shaft. The driving mechanism converts the linear motion of the base body's sliding motion into rotation and drives the driving shaft to rotate through the output end. The plate is fixed on the telescopic end. When the base body slides, the plate rises with the telescopic end to the gap between two adjacent base bodies to support the human body part located above the gap.

[0009] Furthermore, the adjustment components are in two sets, which are distributed relative to each other, with each end of the base body correspondingly set on the slider of the two adjustment components.

[0010] Furthermore, there are N sets of spiral cam grooves, where 15 ≥ N ≥ 3, and N is an integer; there are N sliders; there are N base bodies; and there are N-1 sets of auxiliary support components.

[0011] Furthermore, the lifting mechanism also includes a swing rod and a connecting rod. The swing rod is fixed on the drive shaft; one end of the connecting rod is hinged to the swing rod, and the other end is fixed to the lower end of the plate as the telescopic end.

[0012] Furthermore, the connecting rod includes a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the swing rod; one end of the second connecting rod is hinged to the other end of the first connecting rod, and the other end of the second connecting rod is fixed to the lower end of the plate as the telescopic end.

[0013] Furthermore, a telescopic plate is provided on the mounting groove, and a limit hole is provided on the telescopic plate, through which the second connecting rod passes.

[0014] Furthermore, an elastic element is fitted onto the second connecting rod, with one end of the elastic element abutting against the telescopic plate and the other end abutting against the plate body.

[0015] Furthermore, the drive mechanism includes a gear and a rack. The gear is coaxially fixed on the drive shaft. The rack is parallel to the guide rail, and one end is fixed in any mounting slot of two adjacent base bodies. The rack meshes with the gear. When the rack moves with the base body, it drives the gear to rotate, and the drive shaft rotates coaxially with the gear.

[0016] Furthermore, there are two racks, which are distributed vertically and fixed one-to-one in the mounting slots of two adjacent base bodies, with the gear located between the two racks.

[0017] Furthermore, the drive mechanism has two sets, each set corresponding to a lifting mechanism, with the gears of the two sets of drive mechanisms fixed at both ends of the drive shaft.

[0018] Compared with existing technologies, the advantages of this invention are as follows: This invention achieves individualized and precise adaptation for different patients through an adjustment assembly composed of a camshaft assembly, guide rail, and slider. Multiple sets of spiral cam grooves on the camshaft body engage with the inlaid blocks of the sliders. Rotating the camshaft drives all sliders to slide synchronously along the guide rail, thereby driving the base bodies on the sliders to adjust their spacing synchronously. Without the need to individually control each base body, it can quickly match the spinal length and curvature of different body types such as children, adults, and obese patients. This completely solves the problem that existing single-body pads, which only adjust the spacing, cannot adapt to individual spinal characteristics, avoiding situations such as unsupported lumbar regions and insufficient support points for the iliac crest and pubic symphysis in obese patients, making the postural support more closely conform to the patient's physiological structure.

[0019] A continuous, uninterrupted support system is constructed using auxiliary support components. The drive mechanism within the mounting slots of adjacent base bodies converts the linear sliding motion of the base bodies into rotation, transmitting this rotation to the drive shaft of the lifting mechanism. This causes the plate to automatically rise and fill the gaps, forming a full-area coverage of "base body support + plate filling." This design maintains the natural lumbar lordosis of the lumbar spine when the patient is in a prone position, reducing nerve root tension and intervertebral disc pressure, lowering the risk of intervertebral disc herniation, while avoiding increased intra-abdominal pressure due to abdominal compression. This effectively improves the surgical field of vision and ensures the biomechanical balance of the spine. Attached Figure Description

[0020] Figure 1 This is an exploded view of the structure of the adjusting pad of the present invention; Figure 2 This is a partial exploded view of the adjusting pad of the present invention; Figure 3 This is a schematic diagram of the structure of the support component of the present invention; Figure 4 Exploded view of the local structure of the base body before and after adjustment of the present invention; Figure 5 These are comparison diagrams of the partial structure of the seat body before and after adjustment according to the present invention; Figure 6 This is the present invention. Figure 5 Enlarged views of points A1 and B1, where A2 is an enlarged view of point A1 and B2 is an enlarged view of point B1; Figure 7 These are application comparison diagrams of the present invention.

[0021] Among them, 1-camshaft assembly, 10-camshaft body, 100-spiral cam groove, 2-guide rail, 3-slider, 4-base body, 40-mounting groove, 400-telescopic plate, 5-auxiliary support, 51-lifting mechanism, 510-drive shaft, 511-swing rod, 512-connecting rod, 5121-first connecting rod, 5122-second connecting rod, 52-drive mechanism, 521-gear, 522-rack, 53-plate body, 54-elastic element. Detailed Implementation

[0022] The following is combined Figures 1 to 7 The specific embodiments of the present invention will be described in detail below. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] Example 1 A spinal surgery support device for neurosurgery includes a positioning pad that supports the patient's position. The positioning pad has at least one set of adjustment pads; in this embodiment, there are multiple sets of adjustment pads. Figure 7As shown, the positioning pad is formed by a base material. The base material is made of high-density foam material. The interior of the pad has cavities reserved in key support areas such as the chest / thoracic cavity, abdomen / pelvis, etc. The cavities are used to place the adjustment pad.

[0025] like Figure 1 , Figure 2 As shown, the adjusting pad includes an adjusting assembly and a supporting assembly. The adjusting assembly includes a camshaft assembly 1, a guide rail 2, and sliders 3. The camshaft assembly 1 has a camshaft body 10, on which multiple spiral cam grooves 100 are arranged sequentially along the axial length direction, and the spiral lines of each spiral cam groove 100 are parallel. The guide rail 2 is distributed along the axis of the camshaft body 10. Multiple sliders 3 are slidably sleeved on the guide rail 2, and each slider 3 is provided with an insert block. Multiple insert blocks are correspondingly locked in multiple sets of spiral cam grooves 100. When the camshaft body 10 rotates, the insert blocks slide in the spiral cam grooves 100, and the sliders 3 slide on the guide rail 2 with the insert blocks to change the distance between the sliders 3.

[0026] like Figure 3 , Figure 4 As shown, the support assembly includes multiple base bodies 4 and multiple sets of auxiliary support members 5. The multiple base bodies 4 are correspondingly arranged on the slider 3, and mounting grooves 40 are provided on the opposite sides of two adjacent base bodies 4. The multiple sets of auxiliary support members 5 are correspondingly arranged in the mounting grooves 40 between two adjacent base bodies 4. Each set of auxiliary support members includes a lifting mechanism 51, a driving mechanism 52, and a plate 53. The lifting mechanism 51 has a driving shaft 510 and a telescopic end. The driving mechanism 52 has an input end and an output end. The input end is connected to the base body 4 and moves with the base body 4. The output end is connected to the driving shaft 510. The driving mechanism 52 converts the linear motion of the sliding of the base body 4 into rotation and drives the driving shaft 510 to rotate through the output end. The plate 53 is fixed on the telescopic end. When the base body 4 slides, the plate 53 rises with the telescopic end and is located in the gap between two adjacent base bodies 4 to support the human body part located above the gap.

[0027] In this embodiment, multiple sets of spiral cam grooves 100 are provided on the camshaft body 10 of the camshaft assembly 1, which cooperate with multiple sliders 3 slidably sleeved on the guide rail 2. When the camshaft body 10 rotates, the inlay block on the slider 3 slides along the spiral cam groove 100, thereby driving the slider 3 to synchronously adjust the spacing on the guide rail 2. The corresponding base bodies 4 on the slider 3 also change their distribution spacing accordingly. This linkage adjustment method does not require individual operation of each base body 4, and can quickly adapt to the spinal length and curvature of patients with different body types. It effectively solves the problem that the existing single pad can only adjust the spacing but cannot match the individual spinal characteristics, avoiding situations such as the waist being suspended in obese patients and insufficient spacing between the iliac crest and pubic symphysis support points, thus ensuring the individualized accuracy of body position support.

[0028] Meanwhile, the auxiliary support members 5 arranged in the mounting grooves 40 on the opposite sides of the two adjacent base bodies 4 convert the linear sliding motion of the base body 4 into rotation through the drive mechanism 52 and transmit it to the drive shaft 510 of the lifting mechanism 51. This drives the telescopic end of the lifting mechanism 51 to move, so that the plate 53 fixed at the telescopic end automatically rises and fills the gap formed after the base body 4 slides. This ensures that there is no break in the lumbar support when the patient is in a prone position, maintains the natural lordosis of the lumbar spine, reduces nerve root tension and intervertebral disc pressure, reduces the risk of intervertebral disc herniation, avoids the increase in intra-abdominal pressure caused by abdominal pressure, improves the surgical field of vision, and ensures the biomechanical balance of the spine.

[0029] While the camshaft assembly 1 drives the slider 3 to adjust the distance between the base body 4, the auxiliary support 5 simultaneously fills the gap. The operation is simple and efficient, shortening the positioning time. Moreover, there is no need to use rigid straps or fixation structures, so it will not restrict the patient's lower limb movement. It fully meets the needs of patients in PTED local anesthesia surgery to remain awake and promptly report numbness, pain and other sensations in the lower limbs. It avoids the patient discomfort and surgical safety risks caused by the excessive functions of existing special brackets, and takes into account both surgical efficiency and patient experience.

[0030] Preferred, such as Figure 1 As shown, there are two sets of adjustment components, which are distributed relative to each other. The two ends of the base body 4 are respectively set on the sliders 3 of the two adjustment components.

[0031] Two sets of adjustment components are distributed opposite each other, with the two ends of the base body 4 fixed to the sliders 3 of the two adjustment components respectively, forming a double-sided clamping support structure. Compared with the unilateral force of a single set of adjustment components, the double-sided fixation can effectively limit the lateral displacement and flipping of the base body 4 during sliding or support, ensuring that the spinal support point does not shift when the patient is prone, avoiding surgical field displacement or additional nerve root compression caused by support swaying, and improving the stability of the surgical position.

[0032] The two sets of adjustment components are synchronously driven by the camshaft assembly 1, which drives the sliders 3 on both sides to slide synchronously, thereby making the displacement of both ends of the base body 4 completely consistent. This synchronous adjustment ensures that all base bodies 4 always remain parallel, conforming to the symmetrical physiological structure of the human spine, avoiding asymmetrical support caused by excessively fast adjustment or offset on one side, reducing the discomfort caused by patient tilting, and ensuring the maintenance of the natural lumbar lordosis.

[0033] The dual-sided adjustment components jointly bear the pressure of the base 4 and the patient's body, distributing the support force to the guide rails 2 and sliders 3 on both sides. This prevents wear or deformation of components caused by excessive force on one side of a single adjustment component. At the same time, the balanced force transmission reduces local pressure on the patient's skin from the base 4, making it especially suitable for obese patients or patients undergoing prolonged surgery, further improving patient comfort during the procedure.

[0034] Preferably, there are N sets of spiral cam grooves 100, where 15 ≥ N ≥ 3, and N is an integer; there are N sliders 3; there are N base bodies 4; and there are N-1 sets of auxiliary support members 5.

[0035] The range of N values ​​covers the spinal length requirements of patients from children to adults, and from patients with normal to special body types. The smaller the N value, the greater the adjustable range of the spacing between the base bodies 4, which is suitable for short spines or simplified surgical scenarios; the larger the N value, the more base bodies 4 there are, and the denser the support points are, which can accurately match the different curvatures of different segments of the spine. The spiral cam grooves 100 correspond one-to-one with the sliders 3, and there are N of them, ensuring that each base body 4 can achieve independent and synchronous spacing adjustment through the drive of the camshaft assembly 1, so that the support points can be accurately positioned according to the surgical area, avoiding redundancy or insufficiency of support points.

[0036] The number of auxiliary support components 5 is set to N-1 groups, which corresponds exactly to all the gaps between the N base bodies 4. Regardless of the value of N, it can be ensured that each adjacent gap of the base body 4 is filled by a dedicated auxiliary support component 5. In conjunction with the lifting mechanism 51 and the drive mechanism 52, when the spacing of the N base bodies 4 is adjusted, the N-1 groups of plates 53 can be raised synchronously, achieving full-area coverage of "base body 4 support + plate 53 filling", completely avoiding local lumbar suspension caused by insufficient number of base bodies 4, further maintaining the natural lumbar lordosis and reducing the risk of nerve root compression.

[0037] Limiting N to ≤ 15 avoids structural complexity and cumbersome adjustments caused by an excessive number of base bodies 4, such as decreased synchronous sliding accuracy of slider 3 and excessive load on camshaft assembly 1. It also controls manufacturing costs and operational difficulty, meeting the high-efficiency requirements of clinical surgery. Limiting N to ≥ 3 ensures that at least 3 base bodies 4 form a basic support framework, avoiding insufficient support points and concentrated stress due to an insufficient number of base bodies 4, which could lead to an inability to stably maintain the prone spinal posture. This is especially beneficial for meeting the key support needs of the lumbar core region during PTED surgery.

[0038] Combining two sets of adjustment components, both ends of the N base bodies 4 are fixed to the double-sided guide rails 2 by sliders 3. The multiple sets of support points corresponding to the N value can evenly distribute the patient's weight to each base body 4 under the synchronous adjustment of both sides, avoiding excessive local support pressure. At the same time, it makes the plate 53 of the auxiliary support 5 more evenly stressed, further improving the patient's comfort during long-term surgery.

[0039] Preferably, the lifting mechanism 51 further includes a swing rod 511 and a connecting rod 512. The swing rod 511 is fixed on the drive shaft 510; one end of the connecting rod 512 is hinged to the swing rod 511, and the other end is fixed to the lower end of the plate 53 as a telescopic end.

[0040] The swing rod 511 is fixed to the drive shaft 510. One end of the connecting rod 512 is hinged to the swing rod 511, and the other end is fixed to the plate 53, forming a direct transmission path of "drive shaft 510 rotation → swing rod 511 swing → connecting rod 512 push and pull → plate 53 rise and fall". With fewer transmission parts and smaller clearances, energy loss can be reduced, and problems such as jamming and abnormal noise that are prone to occur in complex structures can be avoided. It is especially suitable for the need for rapid response of plate 53 when the spacing of the base body 4 is frequently adjusted during surgery.

[0041] The hinge structure between the connecting rod 512 and the swing rod 511 has a buffering characteristic. When the drive shaft 510 rotates, the plate 53 slowly rises and falls with the swing of the connecting rod 512, rather than suddenly being pushed up or falling. This smooth rise and fall allows the plate 53 to form a gentle transition with the support surface of the base 4, avoiding stinging or pressure on the patient's skin due to sudden force, while ensuring that the lumbar spine posture does not suddenly shift during support, thus meeting the positional stability requirements of long-term surgery.

[0042] When the spacing of the base body 4 is adjusted according to the patient's body size and surgical needs, the rotation angle of the drive shaft 510 will change synchronously with the size of the gap. The hinge structure of the swing rod 511 and the connecting rod 512 can adapt to this angle change. Regardless of the width of the gap, the swing amplitude can be adjusted to ensure that the plate 53 is raised to the same height as the support surface of the base body 4, accurately filling the gap and avoiding abnormal spinal posture caused by insufficient support or excessive lifting.

[0043] Combined with the dual-sided adjustment components, the dual-sided drive shafts 510 synchronously drive the swing rod 511 to rotate, and the connecting rod 512 synchronously drives the plate 53 to rise and fall, avoiding tilting of the plate 53 caused by unilateral lifting and ensuring that the support surface is always flat. In conjunction with N-1 sets of auxiliary support components 5, which move synchronously through this transmission structure, the filling of dense support points is more even, especially suitable for the need for synchronous filling of multiple gaps when N values ​​are large (11-15), completely avoiding localized unsupported areas at the waist.

[0044] Preferred, such as Figure 6 As shown, the connecting rod 512 includes a first connecting rod 5121 and a second connecting rod 5122. One end of the first connecting rod 5121 is hinged to the swing rod 511; one end of the second connecting rod 5122 is hinged to the other end of the first connecting rod 5121, and the other end of the second connecting rod 5122 is fixed to the lower end of the plate 53 as a telescopic end.

[0045] The first link 5121 is hinged to the swing rod 511, and the second link 5122 is hinged to the first link 5121, forming a two-stage movable joint. Compared with a single link 512, this can flexibly compensate for the angular deviation of the swing rod 511 during swing. When the adjustment range of the base body 4 is large or the spinal curvature is abnormal, the two-stage hinge can adaptively adjust the force angle of the plate 53 through joint rotation, ensuring that the plate 53 always remains flush with the support surface of the base body 4, avoiding the tilting or jamming of the support surface caused by the limited angle of a single link.

[0046] The two-stage hinge structure adds a buffer element to the force transmission. When the drive shaft 510 drives the swing rod 511 to swing, the hinge point between the first link 5121 and the second link 5122 can absorb part of the impact force, making the lifting and lowering movement of the plate 53 smoother. Combined with the advantage of smooth transmission, this "two-stage buffer" can avoid rigid contact between the plate 53 and the patient's skin, which is especially suitable for slight adjustments in patient position during long-term surgery, reducing discomfort caused by local pressure and lowering the risk of pressure sores.

[0047] The force is distributed through the path of second link 5122 → first link 5121 → swing rod 511 → drive shaft 510, avoiding bending deformation caused by concentrated force on a single link. Combined with the dual-sided adjustment components and multi-N value design, the two-stage links of the N-1 group auxiliary support 5 are stressed synchronously, and the load on each joint is smaller, effectively reducing component wear and adapting to the needs of high-frequency surgical adjustments.

[0048] To accommodate the varying gap sizes corresponding to different N values, the two-stage connecting rods can adapt to different gap widths through joint extension and retraction: when the gap is wide, the two-stage connecting rods extend at a larger angle; when the gap is narrow, the two-stage connecting rods fold and retract, ensuring that the positioning accuracy of the plate 53 is not affected by the gap size. In conjunction with the drive mechanism 52, the meshing power of the gear 521 and rack 522 is transmitted more smoothly through the two-stage connecting rods, avoiding jerky lifting and lowering of the plate 53 caused by power fluctuations, further ensuring the continuity and stability of spinal support.

[0049] Preferred, such as Figure 6 As shown, a telescopic plate 400 is provided on the mounting groove 40, and a limit hole is provided on the telescopic plate 400. The second connecting rod 5122 passes through the limit hole.

[0050] The limiting hole provides rigid constraint to the second link 5122, restricting its extension and retraction to the vertical direction only, thus preventing lateral swaying, twisting, or tilting during lifting and lowering. Combined with the two-stage linkage structure, precise guidance ensures that the hinged action of the first link 5121 and the second link 5122 does not deviate, thereby keeping the plate 53 level during lifting and lowering, preventing tilting of the support surface due to link misalignment, and ensuring the flatness of the spinal support.

[0051] The telescopic plate 400 can extend and retract synchronously with the sliding of the base body 4: when the distance between the base bodies 4 increases, the telescopic plate 400 extends; when the distance decreases, the telescopic plate 400 retracts, always matching the distance between the base bodies 4. Regardless of the value of N or the magnitude of the adjustment of the distance between the base bodies 4, the limiting hole can always provide effective guidance for the second connecting rod 5122, preventing the connecting rod from disengaging from the constraint due to changes in the distance, and ensuring the accuracy of the plate 53's positioning.

[0052] The limiting hole isolates the second connecting rod 5122 from the inner wall of the mounting groove 40, preventing direct friction and wear. It also limits the radial wobble of the connecting rod, reducing force deviation at the hinge points of the first connecting rod 5121 and the second connecting rod 5122, and between the second connecting rod 5122 and the plate 53. Combining the force distribution advantages of the two-stage connecting rods, the guiding protection ensures a more even load distribution at each hinge point, reducing component wear caused by frequent surgical adjustments and meeting the needs of long-term clinical use.

[0053] Two sets of adjustment components allow the two ends of the base body 4 to slide synchronously, and the telescopic plates 400 in the mounting slots 40 on both sides also extend and retract synchronously. The guide holes on both sides keep the second connecting rod 5122 consistent. This ensures that the two ends of the plate body 53 are completely synchronized during the lifting and lowering process, avoiding the tilting of the support surface caused by unilateral offset. It is especially suitable for the need for multiple sets of plates 53 to be synchronously filled when the N value is large (11-15), further ensuring the continuity of support.

[0054] Precise guidance makes the lifting height of the plate 53 more controllable, always flush with the support surface of the base 4, avoiding excessive lifting or insufficient support of the plate 53 due to linkage misalignment, and preventing additional nerve root compression caused by abnormal spinal posture. While constraining the second linkage 5122, the telescopic plate 400 also enhances the overall structural rigidity of the auxiliary support 5, preventing component wobbling when the patient slightly adjusts their position during surgery, and improving the reliability of positional support.

[0055] Preferably, an elastic element 54 is sleeved on the second connecting rod 5122, with one end of the elastic element 54 abutting against the telescopic plate 400 and the other end abutting against the plate body 53.

[0056] The elastic element 54 is a compression spring, which is compressible and can absorb the impact force when the plate 53 is raised and lowered, avoiding rigid contact between the plate 53 and the patient's skin. Combined with the two-stage linkage buffer, it further reduces the local pressure and is suitable for long-term surgery or patients with slight body movements.

[0057] Preferred, such as Figure 5 , Figure 6As shown, the drive mechanism 52 includes a gear 521 and a rack 522. The gear 521 is coaxially fixed on the drive shaft 510. The rack 522 is parallel to the guide rail 2, and one end is fixed in any mounting groove 40 of two adjacent base bodies 4. The rack 522 meshes with the gear 521. When the rack 522 moves with the base body 4, it drives the gear 521 to rotate, and the drive shaft 510 rotates coaxially with the gear 521.

[0058] The meshing transmission between gear 521 and rack 522 has rigid constraints, a constant transmission ratio, and no slippage or idle. When the base body 4 slides on the guide rail 2 with the slider 3, the linear displacement of rack 522 can be precisely converted into the rotation angle of drive shaft 510 through gear 521. This high-precision transmission ensures that for every 1mm movement of base body 4, the rotation angle of drive shaft 510 is fixed. This, in turn, drives plate 53 to rise precisely to match the gap size through swing rod 511, first connecting rod 5121, and second connecting rod 5122, avoiding insufficient compensation or excessive lifting due to transmission errors. It perfectly adapts to the gap accuracy requirements corresponding to different N values, especially in dense support scenarios when N≥11.

[0059] The gear and rack meshing is a surface contact transmission, which can withstand a large load and has no elastic deformation during power transmission, unlike belt and chain drives. This ensures that the lifting power of the plate 53 does not decrease when the spacing of the base body 4 is adjusted. Combined with the dual-sided adjustment components, the gears 521 and racks 522 on both sides mesh synchronously, which can transmit the driving force on both sides equally, avoiding transmission deviation caused by unilateral force, and ensuring that multiple sets of base bodies 4 and plate bodies 53 maintain stable operation under heavy loads.

[0060] The gear and rack meshing has no backlash, and the base 4 can drive the gear 521 to rotate instantly as it slides, causing the plate 53 to rise and fall synchronously without waiting for transmission lag. This advantage is suitable for the need for rapid patient positioning during surgery. Combined with the linkage adjustment of the camshaft assembly 1, the patient positioning time can be reduced by more than 30%, improving surgical efficiency.

[0061] The precise transmission between gear 521 and rack 522 provides stable power input to the two-stage connecting rod, avoiding uneven force distribution at the hinge point due to power fluctuations and enhancing the smoothness of the lifting of plate 53. Regardless of whether N is 3 or 15, the linear-rotational conversion accuracy of the gear and rack remains consistent, ensuring that the N-1 group of auxiliary support components 5 has a uniform compensation effect without local deviations.

[0062] Preferably, there are two racks 522, which are distributed vertically and fixed in the mounting slots 40 of two adjacent base bodies 4 respectively, and the gear 521 is located between the two racks 522.

[0063] The double rack 522 meshes with the gear 521 simultaneously from both the top and bottom, forming a bidirectional constraint and avoiding problems such as lateral tooth dislodgement or excessive meshing clearance that may occur when a single rack meshes. It is especially suitable for four-way adjustable base spacing or heavy-load scenarios, ensuring continuous transmission.

[0064] Two racks 522 are fixed in the mounting slots 40 of two adjacent base bodies 4 respectively. When the base body 4 slides, the racks on both sides apply force to the gear 521 simultaneously, so that the drive shaft 510 is subjected to uniform force and avoids the drive shaft 510 being misaligned due to force on one side. In conjunction with the dual-sided adjustment components, the horizontal lifting accuracy of the plate body 53 is further enhanced.

[0065] The double meshing surface increases the transmission contact area, disperses the meshing pressure, reduces the wear rate of a single tooth surface, and can withstand more frequent body position adjustments and larger support loads. Combined with elastic buffering, this extends the service life of the drive mechanism 52.

[0066] The two racks 522 move parallel to and synchronously with the guide rail 2, driving the gear 521 to rotate at a more precise angle, avoiding transmission errors caused by installation deviations of a single rack. This design is suitable for dense support scenarios with N≥11, ensuring that N-1 sets of auxiliary support components 5 are synchronously positioned to maintain the overall stability of the spinal support.

[0067] Example 2 Unlike Embodiment 1, preferably, there are two sets of drive mechanisms 52, with each set of drive mechanisms 52 corresponding to a set of lifting mechanisms 51, and the gears of the two sets of drive mechanisms 52 are respectively fixed at both ends of the drive shaft 510.

[0068] Two sets of drive mechanisms synchronously input power from both ends of the drive shaft 510, ensuring symmetrical force distribution at both ends of the shaft. This prevents bending or torsional deformation of the drive shaft 510 caused by unilateral drive, especially in heavy-load scenarios, such as when supporting obese patients or when the resistance of lifting the plate 53 is significant. This balanced force distribution maintains the straightness of the drive shaft 510, ensures consistent swing angles of the swing rod 511, prevents tilting of the plate 53 due to shaft deformation, and enhances the flatness of the support surface.

[0069] Two sets of gears 521 mesh with corresponding racks 522, synchronously driving the drive shaft 510 to rotate, ensuring that the rotation angles at both ends of the drive shaft 510 are completely consistent. This dual-end synchronous transmission eliminates the "one-end rotation lag" problem that may exist in single-set drives.

[0070] The two sets of drive mechanisms form a "double insurance": if one set experiences a decrease in transmission efficiency due to unforeseen factors, the other set can temporarily assume the main driving force, ensuring that the plate 53 can still complete basic lifting and positioning actions, avoiding interruption of body position support due to drive failure during surgery, especially suitable for the core requirement of "continuous stable body position" in neurosurgical procedures such as PTED.

[0071] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A spinal surgery support device for neurosurgery, comprising a positioning pad that supports the patient's position, characterized in that, The positioning pad has at least one set of adjustment pads, the adjustment pads including: The adjustment assembly includes: a camshaft assembly having a camshaft body with a plurality of sequentially distributed helical cam grooves along the axial length of the camshaft body; a guide rail distributed along the axis of the camshaft body; and a plurality of sliders slidably mounted on the guide rail, each slider having an insert block, the plurality of insert blocks being correspondingly engaged in the plurality of helical cam grooves; when the camshaft body rotates, the insert blocks slide within the helical cam grooves, and the sliders slide along the guide rail with the insert blocks to change the spacing between the sliders; The support assembly includes: multiple base bodies, each corresponding to a slider, with mounting grooves on opposite sides of adjacent base bodies; multiple sets of auxiliary support components, each corresponding to a mounting groove between adjacent base bodies, each set of auxiliary support components including: a lifting mechanism with a drive shaft and a telescopic end; a drive mechanism with an input end and an output end, the input end being connected to the base body and moving with the base body, and the output end being connected to the drive shaft, the drive mechanism converting the linear sliding motion of the base body into rotation, and driving the drive shaft to rotate through the output end; and a plate fixed to the telescopic end, which, when the base body slides, rises with the telescopic end to the gap between adjacent base bodies to support the human body part located above the gap.

2. The spinal surgery support device for neurosurgery as described in claim 1, characterized in that, The adjustment components are in two sets, which are distributed opposite to each other. The two ends of the base are respectively set on the sliders of the two adjustment components.

3. The spinal surgery support device for neurosurgery as described in claim 1, characterized in that, The spiral cam grooves are N sets, 15≥N≥3, N is an integer, there are N sliders, there are N base bodies, and there are (N-1) sets of auxiliary support components.

4. The spinal surgery support device for neurosurgery as described in claim 1, characterized in that, The lifting mechanism also includes: The swing arm is fixed to the drive shaft; The connecting rod is hinged at one end to the swing rod, and the other end is fixed to the lower end of the plate as the telescopic end.

5. A spinal surgery support device for neurosurgery as described in claim 4, characterized in that, The link includes: The first link is hinged at one end to the swing arm; The second link is hinged at one end to the other end of the first link, and the other end of the second link is fixed to the lower end of the plate as the telescopic end.

6. The spinal surgery support device for neurosurgery as described in claim 5, characterized in that, The mounting slot is provided with a telescopic plate, and the telescopic plate is provided with a limit hole, through which the second connecting rod passes.

7. A spinal surgery support device for neurosurgery as described in claim 6, characterized in that, An elastic element is fitted onto the second connecting rod, with one end of the elastic element abutting against the telescopic plate and the other end abutting against the plate body.

8. A spinal surgery support device for neurosurgery as described in claim 1, characterized in that, The drive mechanism includes: The gear is fixed to the drive shaft coaxially with it. The rack is parallel to the guide rail, with one end fixed in any mounting slot of two adjacent base bodies. The rack meshes with the gear. When the rack moves with the base body, it drives the gear to rotate, and the drive shaft rotates coaxially with the gear.

9. A spinal surgery support device for neurosurgery as described in claim 8, characterized in that, There are two racks, which are distributed vertically and fixed one-to-one in the mounting slots of two adjacent base bodies, with the gear located between the two racks.

10. A spinal surgery support device for neurosurgery as described in claim 9, characterized in that, The drive mechanism consists of two sets, each corresponding to a lifting mechanism. The gears of the two sets of drive mechanisms are fixed at both ends of the drive shaft.

Images