Adjustable head fixing device for brain nerve operation

Abstract

The invention discloses an adjustable head fixing device for brain nerve surgery in the technical field of medical instruments. The adjustable head fixing device comprises a base, and a supporting device is arranged on one side of the upper end of the base; the mounting bracket is fixedly mounted on the other side of the upper end of the base; the first adjusting device is fixedly mounted on one side of the upper end of the mounting bracket; the fixed bracket is mounted on one side of the first adjusting device; the second adjusting devices are installed at the two ends of one side of the fixing support; the third adjusting device is mounted at one end of the second adjusting device; the clamping device is installed on one side of the third adjusting device. The multi-angle adjustable head frame has the intraoperative real-time multi-angle adjusting capacity, the step that a traditional head frame needs to loosen a bolt is avoided, the multi-angle adjustable head frame adapts to different head circumferences, intraoperative dynamic fine adjustment is supported, positioning drifting caused by traditional mechanical locking is avoided, the intraoperative clamping angle adjusting range is widened, and the operation requirements of craniotomy, stereotactic orientation and the like are met.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to an adjustable head fixing device for brain neurosurgery. Background Art

[0002] In the existing technology, neurosurgery mostly uses a wheel-shaped head frame (Mayfield head frame) to fix the patient's head, which is positioned by manually tightening the head pins and adjusting the universal joints. During brain neurosurgery, the patient's head needs to be precisely fixed by the head frame and the angle needs to be frequently adjusted to adapt to the surgical field of view. Traditional head frames rely on a threaded rod mechanical locking mechanism (such as the Mayfield head frame), and a single adjustment needs to be completed by loosening the bolts-adjusting the angle-re-locking. The operation is cumbersome and time-consuming. During the operation, the surgeon and the assistant need to repeatedly adjust the head position, and the assistant needs to constantly hold the patient's head to maintain the temporary position. Therefore, there is an urgent need for an adjustable head fixation device for brain neurosurgery that can be easily adjusted. Summary of the Invention

[0003] The purpose of the present invention is to provide an adjustable head fixation device for brain neurosurgery, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an adjustable head fixation device for brain neurosurgery, comprising a base, wherein a support device is provided on one side of the upper end of the base; A mounting bracket, the mounting bracket being fixedly mounted on the other side of the upper end of the base; a first adjusting device, the first adjusting device being fixedly mounted on one side of an upper end of the mounting bracket; a fixing bracket, the fixing bracket being mounted on one side of the first adjusting device; a second adjusting device, the second adjusting device being installed at both ends of one side of the fixing bracket; a third adjusting device, the third adjusting device being mounted on one end of the second adjusting device; The clamping device is installed on one side of the third adjusting device.

[0005] As a further optimization of the present technical solution, the supporting device includes a first electric telescopic rod and a first supporting block. The first electric telescopic rod is fixed to both sides of the upper end of the base by mounting parts and bolts. The lower end of the first supporting block is a metal structure and the upper end is a latex structure, and grooves are provided on one side of the metal structure and the latex structure.

[0006] As a further optimization of this technical solution, an operation panel is installed on one side of the mounting bracket.

[0007] As a further optimization of the present technical solution, the first adjusting device includes a turntable connected to one end thereof, and the fixed bracket can be rotated by the turntable.

[0008] As a further optimization of the present technical solution, both ends of the fixed bracket are provided with embedding grooves for installing the second adjusting device, the second adjusting device includes a rotating device provided at one end thereof, the rotating device includes a driving component and a fixing component, the driving component is used to drive the fixing component so that one end of the second adjusting device rotates at the position of the other end, and the second adjusting device is provided with an installation groove for installing the rotating device.

[0009] As a further optimization of this technical solution, the third adjusting device includes a second electric telescopic rod installed on one side thereof, the output end of the second electric telescopic rod is connected to the clamping device, and the third adjusting device is installed at one end of the second adjusting device.

[0010] As a further optimization of the present technical solution, the structure of the clamping device is the same as that of the first supporting block.

[0011] Compared with the prior art, the adjustable head fixation device for brain neurosurgery of the present invention has the following beneficial effects: It has the ability to adjust multiple angles in real time during surgery: 1. Vertical adjustment: The first adjustment device realizes stepless lifting and lowering, and the head height can be adjusted at any time during surgery, avoiding the step of loosening the bolts of the traditional head frame; 2. Horizontal deflection: The second adjustment device drives the clamping device to rotate horizontally, and the surgeon can switch the field of view of the surgical area with one hand; 3. Radial clamping: The third adjustment device controls the opening and closing of the clamping, adapts to different head circumferences and supports dynamic fine-tuning during surgery; 4. Both adjustment efficiency and safety are improved; 5. Zero displacement stability: gear-limit The plate linkage structure ensures that there is no shaking during the adjustment process, avoiding positioning drift caused by traditional mechanical locking; 6. Dynamic pressure adaptive adjustment: The built-in pressure sensor in the clamping device provides real-time feedback of the clamping force, and automatically compensates the pressure according to the slight movement of the head during surgery; 7. Assistant-free lifting: Electric adjustment saves labor costs and eliminates errors caused by human collaboration; the latex / silicone composite buffer layer continuously disperses pressure during adjustment, reducing the incidence of postoperative indentation; the number of adjustment steps is reduced compared to the Mayfield head frame (the traditional method requires three steps: loosening the bolts - adjusting - locking); the intraoperative clamping angle adjustment range is increased to meet the needs of craniotomy, stereotactic surgery, and other surgeries. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of another perspective of the present invention; Figure 3 This is a schematic diagram of the structure of the third regulating device of the present invention; Figure 4It is a schematic diagram of the enlarged structure of the rear rotating device of the second adjusting device cross section of the present invention.

[0013] In the figure: 1. Base; 11. First electric telescopic rod; 12. First support block; 2. Mounting bracket; 21. Operation panel; 3. First adjustment device; 31. Turntable; 4. Fixed bracket; 41. Second adjustment device; 42. Third adjustment device; 43. Second electric telescopic rod; 44. Clamping device. DETAILED DESCRIPTION

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] Example 1: See also Figures 1 to 4 , this embodiment provides a technical solution: an adjustable head fixation device for brain neurosurgery, comprising a base 1, a support device being provided on one side of the upper end of the base 1; Mounting bracket 2, which is fixedly mounted on the other side of the upper end of the base 1; A first adjusting device 3, the first adjusting device 3 is fixedly mounted on one side of the upper end of the mounting bracket 2; A fixed bracket 4 is installed on one side of the first adjustment device 3; The second adjusting device 41 is installed at both ends of one side of the fixing bracket 4; A third adjusting device 42, the third adjusting device 42 is installed at one end of the second adjusting device 41; The clamping device 44 is installed on one side of the third adjusting device 42 .

[0016] More specifically, during surgery, the support device is detachable, which not only supports the head at the bottom, but also can be disassembled. After disassembly, the space reserved here is used for surgery; the mounting bracket 2 is used for support and balance, so that the base 1 and the fixed bracket are stably installed; the four corners of the upper end and the four corners on both sides of the base 1 are respectively provided with bolt holes and through holes at different positions (see the appendix of the manual for details). Figure 1-2)), used to be fixed on the operating bed when in use, and the specific fixing tool can be a bolt, or it can be a sleeve that is inserted and then clamped on the operating bed with clamps at both ends; the purpose of designing as a bolt hole and a through hole is not to limit the fixing method, which expands the usage method; the first adjusting device 3 is an electric telescopic rod structure, and its output can make the fixed bracket 4 drive the second adjusting device 41 to move, and then make the clamping device 44 at one end move, which is convenient for adjusting the position during surgery; the second adjusting device 41 not only plays the role of connecting support, but also has one end as a rotation adjustment role, which can drive the third adjusting device 42 to rotate the angle, and then achieve the effect of adjusting the clamping angle of the clamping device 44, which is convenient for adjustment during surgery; the third adjusting device 42 has an extendable function that allows the clamping device 44 to move to clamp and fix the head, meeting the practical needs of fixing the head during surgery; the clamping structure of the clamping device 44 is stable and the side in contact with the head is comfortable to use, and its curvature design is ergonomic, more humane.

[0017] During specific implementation, the supporting device includes a first electric telescopic rod 11 and a first supporting block 12. The first electric telescopic rod 11 is fixed to both sides of the upper end of the base 1 through mounting parts and bolts. The lower end of the first supporting block 12 is a metal structure and the upper end is a latex structure, and grooves are provided on one side of the metal structure and the latex structure.

[0018] More specifically, the first electric telescopic rod 11 outputs and adjusts the support height of the first support block 12 to meet the practical needs of patients during surgery; grooves are provided on one side of the metal structure and the latex structure to allow the latex structure to have a certain rebound space when supporting, thereby increasing the comfort of use and avoiding support marks on the head that cause discomfort.

[0019] In a specific implementation, an operation panel 21 is installed on one side of the mounting bracket 2 .

[0020] More specifically, all adjustment functions in the device are controlled through the operation panel 21, making the operation convenient and quick.

[0021] In a specific implementation, the first adjusting device 3 includes a turntable 31 connected to one end thereof, and the turntable 31 can be used to rotate the fixing bracket 4.

[0022] More specifically, the rotation of the turntable 31 can cause the fixed bracket 4 to rotate, and finally the clamping device 44 to rotate, and then adjust to different parts to clamp different parts of the head, meeting the adjustment operation requirements during surgery.

[0023] In specific implementation, both ends of the fixed bracket 4 are provided with embedded grooves for installing the second adjusting device 41. The second adjusting device 41 includes a rotating device provided at one end thereof. The rotating device includes a driving component and a fixing component. The driving component is used to drive the fixing component so that one end of the second adjusting device 41 rotates at the position of the other end. The second adjusting device 41 is provided with an installation groove for installing the rotating device.

[0024] More specifically, the design of the embedding groove can make the second adjustment device 41 embedded in the connection fixing bracket 4 more stable and reduce the shaking rate; the second adjustment device 41 is composed of two independent rods, the first set of rods is an electric telescopic rod, one end of which is embedded in the embedding groove, and the other set of rods b (see the appendix of the manual) is connected to the embedding groove. Figure 1-2 One end of the rod body (numbered b in the figure) is connected to the third adjusting device 42, and a rotating device is installed at the connection between the two independent rod bodies, so that the rotating device can drive the rod body b to rotate when the rotating device is working, and the electric telescopic rod can also be extended and retracted. In this way, when this set of electric telescopic rods is extended, the third adjusting device 42 moves obliquely upward from low to high (this gives the operator more room for forearm movement, especially the elbow will not be blocked by the device). The driving assembly of the rotating device includes a motor 5, a driving gear 51, a driven gear 55, and a limit plate 54. The fixing assembly includes a connecting column 53 and a base plate 52; the motor 5 is a forward and reverse motor and its lower end is fixed to the inner side of the output end of the electric telescopic rod. One end of the base plate 52 is movably mounted on the electric telescopic rod below the motor 5 through a rotating shaft. On the retractable rod, the other end of the base plate 52 is fixedly connected to the rod body b and the upper end is also fixed with a connecting column 53, and the upper end of the connecting column 53 is fixedly connected to the driven gear 55; the motor 5 drives the driving gear 51 to rotate, so that the driven gear 55 rotates around the driving gear 51, thereby driving the connecting column 53 and the base plate 52 to rotate, and one side of the lower end of the base plate 52 will rotate on the rotating shaft below the motor 5, and the other end will drive the rod body b to rotate, and the rod body b drives the third adjusting device 42 to move its position, and finally changes the clamping position of the clamping device 44, and the upper and lower ends of the limit plates 54 clamp the driving gear 51 to increase the stability of the rotation process. The base plate 52 not only plays a connecting role but also plays a role in realizing rotation.

[0025] In specific implementation, the third adjusting device 42 includes a second electric telescopic rod 43 installed on one side thereof, the output end of the second electric telescopic rod 43 is connected to the clamping device 44, and the third adjusting device 42 is installed at one end of the second adjusting device.

[0026] More specifically, the output of the second electric telescopic rod 43 can move the clamping device 44 closer to the head for clamping.

[0027] In a specific implementation, the structure of the clamping device 44 is the same as that of the first supporting block 12 .

[0028] More specifically, the clamping is stable and the use comfort is high.

[0029] More specifically, during surgery, the clamping device 44 and the first support block 12 are equipped with built-in piezoelectric film pressure sensors, which form a closed-loop feedback system with the operating panel 21 to solve the problem that traditional head frames rely on the surgeon's feel and are prone to excessive pressure. The operating panel 21 sets a safety threshold (default 1.2kPa), which automatically retracts the clamping device and triggers an audible and visual alarm when overpressure occurs. All contact parts (clamping device 44 / first support block 12) are covered with a detachable medical silicone protective cover. The protective cover is connected to the metal base through a snap-fit ​​structure, supports high-temperature and high-pressure sterilization, and solves the risk of cross-infection during surgery. The operating panel 21 is equipped with a double-confirmation touch screen button: the first press selects the function, and the second press takes effect. The panel can also be installed at a 15° tilt to prevent the surgeon's arm from accidentally touching it. Working principle: Bolt the base 1 to the operating table and install a sterile protective cover. Place the patient's head on the first support block 12, with the latex groove adapted to the occipital bone. Press the operating panel 21 → activate the first adjustment device 3 to raise the head (e.g., 60-80 mm) → the clamping device 44 reaches the temporal area; rotate the turntable 31 to deflect the clamping device 44 away from the surgical incision area. Activate the third adjustment device 42 → the clamping device 44 approaches the head at a speed of 0.5 mm / s; the piezoelectric sensor provides real-time feedback on the pressure value, automatically stopping when it reaches 1.0 kPa. To change the clamping angle, the motor 5 drives the gear set (51 / 55) → the second adjustment device 41 drives the clamping device 44 to rotate 15°. This adapts to micro-movements of the head during surgery, reducing the number of manual adjustments.

[0030] The electric telescopic rod of the first adjustment device 3 drives the fixed bracket 4 vertically, adjusting the clamping height range from 0 to 150 mm with an accuracy of ±0.5 mm. The driving gear 51 and driven gear 55 of the second adjustment device 41 drive the connecting rod horizontally to adjust the horizontal angle of the clamping device 44. The second electric telescopic rod 43 of the third adjustment device 42 drives the clamping device 44 radially, with a clamping range of 20 to 100 mm. The base 1 has built-in polyurethane shock-absorbing pads, and a 3 mm thick silicone buffer layer is added between the latex layer and the metal layer of the first support block 12.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable head fixation device for brain neurosurgery, characterized by: It comprises a base (1), wherein one side of the upper end of the base (1) is provided with a supporting device; A mounting bracket (2), wherein the mounting bracket (2) is fixedly mounted on the other side of the upper end of the base (1); A first adjusting device (3), the first adjusting device (3) being fixedly mounted on one side of an upper end of the mounting bracket (2); A fixed bracket (4), the fixed bracket (4) being mounted on one side of the first adjustment device (3); A second adjusting device (41), the second adjusting device (41) being installed at both ends of one side of the fixed bracket (4); a third adjusting device (42), the third adjusting device (42) being mounted on one end of the second adjusting device (41); A clamping device (44) is installed on one side of the third adjusting device (42).

2. The adjustable head fixation device for brain neurosurgery according to claim 1, characterized in that: The supporting device comprises a first electric telescopic rod (11) and a first supporting block (12); the first electric telescopic rod (11) is fixed to both sides of the upper end of the base (1) by means of mounting members and bolts; the lower end of the first supporting block (12) is a metal structure and the upper end is a latex structure; and grooves are provided on one side of the metal structure and the latex structure.

3. The adjustable head fixation device for brain neurosurgery according to claim 2, characterized in that: An operating panel (21) is mounted on one side of the mounting bracket (2).

4. The adjustable head fixation device for brain neurosurgery according to claim 3, characterized in that: The first adjusting device (3) comprises a rotating disk (31) connected to one end thereof, and the fixed bracket (4) can be rotated by the rotating disk (31).

5. The adjustable head fixation device for brain neurosurgery according to claim 4, characterized in that: Both ends of the fixing bracket (4) are provided with embedding grooves for installing the second adjusting device (41), and the second adjusting device (41) includes a rotating device provided at one end thereof, and the rotating device includes a driving component and a fixing component, and the driving component is used to drive the fixing component so that one end of the second adjusting device (41) rotates at the position of the other end, and the second adjusting device (41) is provided with a mounting groove for installing the rotating device.

6. The adjustable head fixation device for brain neurosurgery according to claim 5, characterized in that: The third adjusting device (42) includes a second electric telescopic rod (43) installed on one side thereof, the output end of the second electric telescopic rod (43) is connected to the clamping device (44), and the third adjusting device (42) is installed at one end of the second adjusting device.

7. The adjustable head fixation device for brain neurosurgery according to claim 6, characterized in that: The structure of the clamping device (44) is the same as that of the first supporting block (12).

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