Headstock pitching adjusting device for neurosurgery department
By designing a tilt adjustment device for the neurosurgical head frame, the problem of inconvenient skull angle adjustment was solved, enabling flexible angle adjustment and stable support of the head frame, thereby improving the precision and safety of neurosurgical procedures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-10
- Publication Date
- 2026-03-27
AI Technical Summary
In neurosurgery, the patient's skull needs to be in different angles to ensure surgical precision, but current technology makes it difficult to effectively adjust and fix the skull angle, affecting surgical precision.
A neurosurgical head frame pitch adjustment device was designed, which realizes the pitch angle adjustment of the head frame through a slide rail and slider structure, and is equipped with high and low angle limiting blocks and support connectors to provide stable support and angle adjustment.
The head frame allows for flexible angle adjustment, ensuring exposure of the patient's skull in different surgical areas. This avoids product damage and breathing obstruction caused by excessive angle adjustment, thus improving the stability and precision of the surgery.
Smart Images
Figure CN121731089A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and more specifically to a neurosurgical head frame pitch adjustment device. Background Technology
[0002] Neurosurgery is a branch of surgery that primarily uses surgical procedures as its main treatment method. It applies neurosurgical methods to study injuries, inflammations, tumors, and certain genetic metabolic disorders or functional disorders of the human nervous system, including the brain, spinal cord, and peripheral nervous system and their related appendages, such as cerebral hemorrhage, epilepsy, and Parkinson's disease. Most of its diagnostic and treatment methods involve operations on the brain. For example, cerebral hemorrhage requires opening the skull to clear the hematoma at the bleeding site, while epilepsy and Parkinson's disease require surgically implanting electrodes at abnormal locations in the brain to electrically stimulate the corresponding brain regions.
[0003] Because the human brain is a vital and delicate organ, brain surgery requires a high degree of precision to ensure a high success rate. During surgery, stabilizing the patient's skull is crucial to prevent movement that could affect surgical accuracy. Different brain diseases and lesion locations require the skull to be positioned at different angles; therefore, ensuring the skull is in the appropriate position is also a significant challenge. Summary of the Invention
[0004] In view of this, the present invention provides a neurosurgical head frame pitch adjustment device, which can adjust the pitch position of the head frame, thereby enabling the patient's head to be in a better position during surgery, facilitating the smooth progress of the operation.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A neurosurgical head frame pitch adjustment device includes: Fixed base plate; The slide rail consists of two slide rails that are fixed at intervals to the top of the fixed base plate. Each slide rail is slidably connected to a slider, which can be locked onto the slide rail. A pitch-adjustable base plate is located between the two slide rails. The bottom of the pitch-adjustable base plate is hinged to the top of the fixed base plate. The top two sides of the pitch-adjustable base plate are respectively connected to the two sliders through support connectors. A headframe that can rotate left and right is installed on the top surface of the pitch-adjustable base plate.
[0007] The beneficial effects of the above technical solution are as follows: by rotating the pitch adjustment base plate to swing it up and down, the slider can move on the slide rail. After rotating to a suitable angle, the slider can be locked to realize the pitch angle adjustment of the head frame. At the same time, the head frame can rotate left and right, which can change the fixed angle of the skull on the head frame according to the needs of the surgical head position. In conjunction with the pitch angle adjustment, it is easier to expose different surgical areas of the skull, making the head position angle adjustment more flexible.
[0008] Furthermore, a high-position angle limiting block and a low-position angle limiting block are respectively installed on the top surface of the fixed base plate. When the pitch adjustment base plate is in the highest position, the bottom of the bottom end surface of the pitch adjustment base plate is pressed against the high-position angle limiting block. When the pitch adjustment base plate is in the lowest position, the top of the bottom end surface of the pitch adjustment base plate is pressed against the low-position angle limiting block.
[0009] The beneficial effects of the above technical solution are as follows: By setting the high-position angle limiting block and the low-position angle limiting block, the pitch angle adjustment of the pitch adjustment base plate can be adjusted within the optimal range. First, it avoids the problem of breathing obstruction caused by the patient's head being raised too high due to excessive pitch angle adjustment. Second, the high-position angle limiting block and the low-position angle limiting block provide a certain anti-collision buffer for the pitch adjustment base plate at the lowest and highest positions, preventing the pitch adjustment base plate from being damaged by violent impact on the fixed base plate at the two extreme positions.
[0010] Furthermore, the bottom of the pitch adjustment base plate has a rotating shaft, and two spaced-apart first hinge seats are fixed on the top surface of the fixed base plate. The two ends of the rotating shaft are respectively hinged to the first hinge holes on the two first hinge seats. The rotating shaft has a receiving slot, and the high-position angle limiting block is located in the receiving slot.
[0011] The beneficial effects of the above technical solution are that the setting of the receiving slot not only facilitates the installation of the high-position angle limiting block, but also ensures that the high-position angle limiting block does not affect the operation of the rotating shaft.
[0012] Furthermore, the top surface of the high-position angle limiting block has a high-position limiting slope, the inclination angle of which is the same as the adjustable pitch angle of the pitch adjustment base plate, and the high-position limiting slope abuts against the bottom of the bottom end surface of the pitch adjustment base plate.
[0013] The beneficial effect of the above technical solution is that when the pitch adjustment base plate is in its highest liftable position, the bottom surface of its receiving slot, i.e., the bottom surface of the pitch adjustment base plate, is in contact with the high-level limiting slope. Due to the obstruction of the high-level limiting slope, the pitch adjustment base plate cannot be raised higher. The angle setting of the high-level limiting slope needs to consider two aspects: firstly, it should allow the patient's head to be raised to a certain angle to expose more of the surgical area, thus maximizing the liftable angle; secondly, it needs to consider that when the patient's head is raised, their airway will be obstructed, thus limiting the maximum liftable angle. Taking both aspects into account, the final design for the liftable angle of the high-level limiting slope is 25°.
[0014] Furthermore, both the high-angle limiting block and the low-angle limiting block are made of soft materials.
[0015] The beneficial effect of the above technical solution is that it makes flexible contact rather than rigid contact when the pitch adjustment base plate contacts the high-position angle limiting block and the low-position angle limiting block, thereby reducing the vibration of the pitch adjustment base plate when it hits the limiting block and improving the stability of the headframe.
[0016] Furthermore, a first locking knob is screwed onto one side of the slider, and the first locking knob abuts against one side of the slide rail to lock it in place.
[0017] The beneficial effects of the above technical solution are as follows: After the pitch adjustment base plate is rotated to a suitable position, the first locking knob can be tightened to fix the slider on the slide rail, so that the pitch adjustment base plate and the support connector form a stable structure, providing stable support for the head frame. Furthermore, considering that the magnitude of the force transmitted by the support connector changes when the pitch adjustment base plate is at different support angles, and that patient posture adjustments also cause changes in the force on the support connector, the first locking knob is located on the side of the slider rather than on the front (i.e., the top surface of the slider) in the same direction as gravity to ensure locking stability. In this case, the locking force is only related to the locking force of the first locking knob, resulting in better stability and safety.
[0018] Furthermore, both of the aforementioned support connectors include: The second hinge seat is fixed on the top of the slider, and a first pin is fixed in the first mounting hole of the second hinge seat; A support link, one end of which is sleeved on the first pin; The third hinge seat is fixed on a fixing groove on one side of the bottom end face of the pitch adjustment base plate. A second pin is fixed in the second mounting hole on the third hinge seat, and the other end of the support connecting rod is sleeved on the second pin.
[0019] The advantages of the above technical solution are that the supporting connector has a simple structure, is easy to disassemble and assemble, and has low manufacturing cost.
[0020] Furthermore, the slide rail is a lead screw, the top of the slider has a second hinge seat, the bottom of the slider has a groove sleeved on the lead screw, and locking nuts for locking the slider on both sides of the lead screw are screwed onto the lead screw.
[0021] The beneficial effects of the above technical solution are as follows: the present invention uses a lead screw and a locking nut for locking, which can avoid the problem of easy damage to the slide rail caused by the first locking knob being tightened against the side of the slide rail in the above solution. Moreover, the locking force of the threaded locking is more stable and secure than that of the top-tight locking.
[0022] Furthermore, the top surface of the pitch adjustment base plate has a positioning groove, and the bottom surface of the head frame has a positioning boss, which is inserted into the positioning groove.
[0023] The advantages of the above technical solution are: it facilitates the quick positioning and installation of the headframe on the pitch adjustment base plate.
[0024] Furthermore, the head frame includes a head frame base, a head support ring, multiple fixing pins for fixing the head, and a second locking knob. The bottom end face of the head frame base is fixedly connected to the top end face of the pitch adjustment base plate by screws. The bottom end face of the head frame base has the positioning boss, and the top of the head frame base has an arc-shaped groove. The head support ring can slide left and right on the arc-shaped groove. Multiple fixing pins are provided on the head support ring along its circumference. The head frame base is provided with a second locking knob for locking the head support ring on the arc-shaped groove.
[0025] The beneficial effects of the above technical solution are as follows: During surgery, the patient's head is placed in the ring hole of the head support ring and fixed by multiple fixing pins on the head support ring, thus firmly fixing the patient's head to the head frame. After fixation, if it is deemed that the patient's head position is not suitable for surgery, the second locking knob can be loosened, and the position of the head can be adjusted by adjusting the angle of the arc-shaped groove on the head frame base of the head support ring. After adjustment, the second locking knob is tightened to fix the head support ring to the head frame base. Therefore, the head support ring on the head frame of this invention can rotate left and right relative to the support base, thereby changing the fixing angle of the head on the head frame according to the needs of the surgical head position. Moreover, in conjunction with the adjustment of the pitch angle of the pitch adjustment base plate, the head frame can have multi-degree-of-freedom adjustment for left and right adjustment and pitch angle adjustment. This can expose different surgical areas of the skull, making the adjustment of the head position angle more flexible. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of a neurosurgical head frame pitch adjustment device according to the present invention.
[0028] Figure 2 This is a schematic diagram of a neurosurgical head frame used in conjunction with the present invention.
[0029] Figure 3 This is a front structural diagram of the pitch adjustment base plate of the present invention.
[0030] Figure 4 This is a schematic diagram of the back structure of the pitch adjustment base plate of the present invention.
[0031] Figure 5 This is a schematic diagram of the bottom of a neurosurgical head frame used in conjunction with the present invention.
[0032] Figure 6 This is a schematic diagram of the neurosurgical head frame pitch adjustment device of the present invention in its lowest adjustable position.
[0033] Figure 7 This is a schematic diagram of the neurosurgical head frame pitch adjustment device of the present invention at its highest adjustable position.
[0034] Figure 8 This is a structural schematic diagram of the support connector of the present invention.
[0035] Figure 9 This is a schematic diagram of the structure of the third hinge seat of the present invention, in which the second pin is fixed by a set screw.
[0036] Figure 10 This is a schematic diagram of the high-angle limiting block of the present invention.
[0037] Figure 11 This is a schematic diagram of the structure of the present invention when it is installed on a pitch adjustment device in conjunction with a neurosurgical head frame.
[0038] Figure 12 This is a schematic diagram of the structure of the slide rail and slider combination in Embodiment 2 of the present invention.
[0039] Figure 13 This is a schematic diagram of the slider structure in Embodiment 2 of the present invention.
[0040] Figure 14This is a schematic diagram of the neurosurgical head frame and pitch adjustment device of the present invention being placed into the MR scanning cavity. Detailed Implementation
[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0043] Furthermore, 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, "a plurality of" means two or more, unless otherwise explicitly specified.
[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0045] See Figures 1-14 This invention discloses a neurosurgical head frame pitch adjustment device, comprising: Fixed base plate 1; Slide rail 2, there are two slide rails 2 that are fixed at intervals to the top of the fixed base plate 1. Sliding sliders 3 are slidably connected to both slide rails 2. The sliding sliders 3 can be locked on the slide rails 2. The pitch adjustment base plate 4 is located between two slide rails 2. The bottom of the pitch adjustment base plate 4 is hinged to the top of the fixed base plate 1. The top two sides of the pitch adjustment base plate 4 are connected to two sliders 3 through support connectors 5 respectively. A headstock 6 that can rotate left and right is mounted on the top surface of the pitch-adjustable base plate 4. (See above) Figure 11 .
[0046] In some embodiments, a high-angle limiting block 7 and a low-angle limiting block 8 are respectively installed on the top surface of the fixed base plate 1. When the pitch adjustment base plate 4 is in the highest position, the bottom of the bottom surface of the pitch adjustment base plate 4 is pressed against the high-angle limiting block 7. When the pitch adjustment base plate 4 is in the lowest position, the top of the bottom surface of the pitch adjustment base plate 4 is pressed against the low-angle limiting block 8.
[0047] In some embodiments, the bottom of the pitch adjustment base plate 4 has a pivot 9, and two spaced first hinge seats 10 are fixed on the top surface of the fixed base plate 1. The two ends of the pivot 9 are respectively hinged to the first hinge holes 101 on the two first hinge seats 10, so that the pitch adjustment base plate 4 can rotate freely through the pivot 9. The pivot 9 has a receiving slot 901, and the high angle limiting block 7 is located in the receiving slot 901.
[0048] In some embodiments, the top surface of the high-angle limiting block 7 has a high-angle limiting slope 71, the tilt angle of the high-angle limiting slope 71 is the same as the adjustable pitch angle of the pitch adjustment base plate 4, and the high-angle limiting slope 71 abuts against the bottom of the bottom surface of the pitch adjustment base plate 4.
[0049] In some embodiments, both the high-position angle limiting block 7 and the low-position angle limiting block 8 are made of soft materials, such as soft plastic or rubber. When the pitch adjustment base plate is at its lowest point, it can contact the low-position angle limiting block to provide the lowest position angle limiting function; when the pitch adjustment base plate is at its highest point, it can contact the high-position angle limiting block to provide the highest position angle limiting function. At the same time, at the highest position, the slider, support connector, and pitch adjustment base plate are at the structural dead point, which can provide stable support.
[0050] In some embodiments, a first locking knob 12 is screwed to one side of the slider 3, and the first locking knob 12 abuts against one side of the slide rail 2 for locking. Two first locking knobs 12 can be used to avoid insufficient locking force when using only one, which could cause displacement of the slider and affect the surgery.
[0051] In some embodiments, both support connectors 5 include: The second hinge seat 51 is fixed on the top of the slider 3, and the first pin 512 is fixed in the first mounting hole 511 of the second hinge seat 51. Support link 52, one end of support link 52 is sleeved on first pin 512; The third hinge seat 53 is fixed on the fixing groove 401 on one side of the bottom end face of the pitch adjustment base plate 4. The second mounting hole 531 on the third hinge seat 53 has a second pin 532 fixed in it, and the other end of the support rod 52 is sleeved on the second pin 532.
[0052] In some embodiments, the first mounting hole 511 and the second mounting hole 531 are both locking screw holes, and the outer walls of the first pin 512 and the second pin 532 are provided with external threads. Therefore, the first pin 512 can be screwed and fixed in the first mounting hole 511, and the second pin 532 can be screwed and fixed in the second mounting hole 531.
[0053] In some embodiments, the second hinge seat 51 and the third hinge seat 53 may be respectively provided with set screws 54 for pressing the first pin and the second pin together, which can prevent the first pin and the second pin from coming out of the first mounting hole and the second mounting hole.
[0054] In some embodiments, the slide rail 2 is a linear guide rail with baffles 11 fixed at both ends to prevent the slider from sliding off the slide rail.
[0055] In other embodiments, a second embodiment of the slide rail and slider provided by the present invention is seen, see [link to relevant documentation]. Figure 12 and Figure 13 The slide rail 2 is a lead screw, the top of the slider 3 has a second hinge seat 51, the bottom of the slider 3 has a slide groove 301 sleeved on the lead screw, and locking nuts 13 for locking the slider 3 to the lead screw are screwed on both sides of the lead screw.
[0056] During use, the slider 3 is moved to the appropriate position, and then the locking nuts 13 at both ends of the slider 3 are locked to complete the locking of the neurosurgical head frame in a specific position.
[0057] In some embodiments, the top surface of the pitch adjustment base plate 4 has a positioning groove 402, and the bottom surface of the head frame 6 has a positioning boss 601, which is inserted into the positioning groove 402.
[0058] In some embodiments, see Figure 2 The head frame 6 includes a head frame base 61, a head support ring 62, multiple fixing pins 63 for fixing the head 100, and a second locking knob 64. The bottom end face of the head frame base 61 is fixedly connected to the top end face of the pitch adjustment base plate 4 by screws. The bottom end face of the head frame base 61 has a positioning boss 601. The top of the head frame base 61 has an arc-shaped groove 611. The head support ring 62 can slide left and right on the arc-shaped groove 611. Multiple fixing pins 63 are provided on the head support ring 62 along its circumference. The head frame base 61 is provided with a second locking knob 64 for locking the head support ring 62 on the arc-shaped groove 611.
[0059] In other embodiments, the materials used to manufacture the headrest pitch adjustment device and the headrest itself are MR-compatible materials, such as engineering plastics like ABS and PEEK, and metals like titanium alloys, brass, and aluminum alloys, thus enabling use in an MR environment. Furthermore, even when the headrest with the pitch adjustment device is in its highest position, it can still be placed inside the magnetic resonance cavity of the MR device 200. Figure 14 As shown, it can be used in existing MR scanning rooms.
[0060] Compared with existing technologies, the advantages of this invention are: First, the present invention can provide stable support for the head frame; Secondly, the present invention can quickly adjust the tilt position of the head frame and limits the adjustable range, so that doctors can achieve their goals quickly during operation without damaging the product due to excessive rotation.
[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A neurosurgical head frame pitch adjustment device, characterized in that, include: Fixed base plate (1); The slide rail (2) consists of two slide rails fixed at intervals on the top of the fixed base plate (1). Each slide rail (2) is slidably connected to a slider (3), which can be locked on the slide rail (2). The pitch adjustment base plate (4) is located between the two slide rails (2). The bottom of the pitch adjustment base plate (4) is hinged to the top of the fixed base plate (1). The top two sides of the pitch adjustment base plate (4) are connected to the two sliders (3) respectively through support connectors (5). The pitch-adjustable base plate (4) has a head frame (6) that can rotate left and right on its top surface.
2. The neurosurgical head frame pitch adjustment device according to claim 1, characterized in that, The top surface of the fixed base plate (1) is respectively equipped with a high angle limiting block (7) and a low angle limiting block (8). When the pitch adjustment base plate (4) is in the highest position, the bottom of the bottom surface of the pitch adjustment base plate (4) is pressed against the high angle limiting block (7). When the pitch adjustment base plate (4) is in the lowest position, the top of the bottom surface of the pitch adjustment base plate (4) is pressed against the low angle limiting block (8).
3. The neurosurgical head frame pitch adjustment device according to claim 2, characterized in that, The bottom of the pitch adjustment base plate (4) has a rotating shaft (9), and two first hinge seats (10) are fixed on the top surface of the fixed base plate (1) at intervals. The two ends of the rotating shaft (9) are respectively hinged to the first hinge holes (101) on the two first hinge seats (10). The rotating shaft (9) has a receiving slot (901), and the high angle limiting block (7) is located in the receiving slot (901).
4. The neurosurgical head frame pitch adjustment device according to claim 3, characterized in that, The top surface of the high-position angle limiting block (7) has a high-position limiting slope (71), the tilt angle of the high-position limiting slope (71) is the same as the adjustable pitch angle of the pitch adjustment base plate (4), and the high-position limiting slope (71) abuts against the bottom of the bottom surface of the pitch adjustment base plate (4).
5. The neurosurgical head frame pitch adjustment device according to claim 2, characterized in that, Both the high-angle limiting block (7) and the low-angle limiting block (8) are made of soft material.
6. A neurosurgical head frame pitch adjustment device according to any one of claims 1-5, characterized in that, A first locking knob (12) is screwed to one side of the slider (3), and the first locking knob (12) abuts against one side of the slide rail (2) to lock it.
7. A neurosurgical head frame pitch adjustment device according to any one of claims 1-5, characterized in that, Both of the aforementioned support connectors (5) include: The second hinge seat (51) is fixed on the top of the slider (3), and the first pin (512) is fixed in the first mounting hole (511) of the second hinge seat (51). A support link (52) is provided, one end of which is sleeved on the first pin (512); The third hinge seat (53) is fixed on the fixing groove (401) on one side of the bottom end face of the pitch adjustment base plate (4). The second mounting hole (531) on the third hinge seat (53) is fixed with a second pin (532). The other end of the support rod (52) is sleeved on the second pin (532).
8. The neurosurgical head frame pitch adjustment device according to claim 7, characterized in that, The slide rail (2) is a lead screw, the top of the slider (3) has a second hinge seat (51), the bottom of the slider (3) has a slide groove (301) sleeved on the lead screw, and locking nuts (13) for locking the slider (3) on the lead screw are screwed on both sides of the slider (3).
9. A neurosurgical head frame pitch adjustment device according to any one of claims 1-5 and 8, characterized in that, The pitch adjustment base plate (4) has a positioning groove (402) on its top surface, and the head frame (6) has a positioning boss (601) on its bottom surface. The positioning boss (601) is inserted into the positioning groove (402).
10. A neurosurgical head frame pitch adjustment device according to claim 9, characterized in that, The head frame (6) includes a head frame base (61), a head support ring (62), multiple fixing head pins (63) for fixing the head (100), and a second locking knob (64). The bottom end face of the head frame base (61) is fixedly connected to the top end face of the pitch adjustment base plate (4) by screws. The bottom end face of the head frame base (61) has the positioning boss (601). The top of the head frame base (61) has an arc-shaped groove (611). The head support ring (62) can slide left and right on the arc-shaped groove (611). Multiple fixing head pins (63) are provided on the head support ring (62) along its circumferential direction. The head frame base (61) is provided with a second locking knob (64) for locking the head support ring (62) on the arc-shaped groove (611).