An adjustable fixed positioning component for skull defect modeling

Abstract

The present invention provides an adjustable fixed positioning assembly for skull defect modeling, which belongs to the technical field of medical instruments. It comprises a modeling support plate, four supporting protrusions are fixedly connected to the bottom outer wall of the modeling support plate, and are distributed in a circular array. A first rotating groove is provided on the top outer wall of the modeling support plate, a rotating support plate is rotatably connected to the inner wall of the first rotating groove, and a modeling limit block is fixedly connected to the top outer wall of the rotating support plate; the fixing assembly is used to fix the rat's head; the limiting assembly is used to limit the skull electric drill. By setting the fixing assembly, the present invention not only simplifies the operation process in the process of fixing the rat's head, but also saves the time of fixing the rat's head, thereby improving the efficiency of the experiment; by setting the limiting assembly, the present invention can force the skull electric drill to move away from the rat when adjusting the angle of the skull electric drill for modeling, thereby preventing the skull electric drill from scratching the rat and affecting the modeling experiment.

Description

Technical Field

[0001] The present invention relates to the technical field of medical appliances, in particular to an adjustable fixing and positioning component for skull defect modeling. Background Art

[0002] Skull defect modeling refers to the artificial creation of bone defects of a certain size and shape in the skull area of ​​rats through surgical methods to simulate human skull injury or disease state, and then used to study bone healing, bone regeneration and evaluate the effects of bone tissue engineering biomaterials.

[0003] When modeling anterior skull defects in rats, the rats were anesthetized and preoperative preparations were completed (such as head skin preparation, disinfection, and exposure of the skull area). A longitudinal surgical incision was made along the sagittal line of the skull, and the soft tissue was separated layer by layer to expose the relevant bone area. During the drilling modeling phase, holes were drilled at different locations according to the defect diameter. The periosteum was fully stripped before drilling. A hollow drill bit was connected to an electric drill and drilled at a low speed. When drilling was close to penetration, blunt separation was performed with a stripper to reduce damage. After surgery, the surgical field was flushed with normal saline. After active bleeding ceased, the incision was closed layer by layer. The rats were resuscitated and returned to the breeding cage for feeding. After surgery, the bone defect healing was analyzed by histological and radiological methods to evaluate the differences in the effects of bone tissue engineering biomaterials.

[0004] During the skull defect creation process, if the rat's head is not fixed, the rat's head will shake, thereby affecting subsequent experimental operations. Currently, the rat's head is fixed on a plane using adhesive tape. Since the skull is mostly an arc-shaped irregular plane, after fixation using the traditional method, the skull drill bit is at a certain tilt angle to the skull. During modeling, the drill bit will be offset due to uneven force, affecting the rat's postoperative healing. In addition, when using a skull electric drill for modeling, the skull electric drill needs to be held handheld, and the drill bit will become unstable during high-speed rotation. Therefore, the present invention provides an adjustable fixed positioning component for skull defect modeling to meet the needs. Summary of the Invention

[0005] The present invention provides an adjustable fixed positioning assembly for skull defect modeling. By providing the fixed assembly, the drill bit can be prevented from deflecting due to uneven force between the skull drill bit and the rat skull during modeling, thereby preventing this deflection from adversely affecting the rat's postoperative healing. By providing a limit assembly, the drill bit can be prevented from becoming unstable during high-speed rotation. Furthermore, during the process of adjusting the skull drill, the drill bit can be forced to move away from the rat, preventing the drill from scratching the rat when adjusting the modeling angle, thereby avoiding interference variables that may affect the results of the modeling experiment due to unexpected situations such as rat injuries.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A fixed positioning component for adjustable skull defect modeling includes a modeling support plate, a fixing component and a limiting component. Four supporting protrusions are fixedly connected to the bottom outer wall of the modeling support plate and are distributed in a circular array. A first rotating groove is provided on the top outer wall of the modeling support plate. A rotating support plate is rotatably connected to the inner wall of the first rotating groove. A modeling limiting block is fixedly connected to the top outer wall of the rotating support plate. A fixing component for fixing the rat's head and a limiting component for limiting the skull electric drill are provided on the modeling limiting block.

[0008] Optionally, the fixing assembly includes a support tube fixedly connected to the outer wall of the molding limit block, and a threaded through hole opened on the middle outer wall of the molding limit block, one end of the support tube is fixedly connected to a fixing clamp, and the fixing clamp is fixedly connected to the same first elastic plate on the bottom outer wall near both ends.

[0009] Optionally, a second elastic plate is fixedly connected to an inner wall of one side of the fixing clamp, a weakened groove is provided on an outer wall of one side of the second elastic plate, and clamping protrusions are symmetrically fixedly connected to the outer wall of one side of the fixing clamp near both ends.

[0010] Optionally, two third elastic plates are fixedly connected to the top outer wall of the first elastic plate, one end of the two third elastic plates is fixedly connected to the same support plate, a curved fixing plate is fixedly connected to the outer wall of one end of the support plate, and a first rotating threaded column is screwed on the inner wall of the threaded through hole.

[0011] Optionally, the limiting assembly includes a first sliding groove and a second sliding groove symmetrically opened on the outer inner wall of the top of the molding limit block, a sliding column is fixedly connected to the inner wall of the first sliding groove, a second rotating groove is opened on the inner wall of the second sliding groove, and a second rotating threaded column is rotatably connected to the inner wall of the second rotating groove.

[0012] Optionally, a sliding support plate is slidably connected to the outer wall of the sliding column, a plurality of limit grooves are provided on the outer wall of the sliding support plate, a sliding fixing seat is slidably connected to the outer wall of the sliding support plate, an avoidance groove is provided on the top outer wall of the sliding fixing seat, and a circular through hole is provided on the bottom inner wall of the sliding fixing seat.

[0013] Optionally, a fourth elastic plate is fixedly connected to the inner walls at both ends of the sliding fixing seat, a pressing handle is fixedly connected to one end of the fourth elastic plate, and a fifth elastic plate is fixedly connected to the outer wall of the pressing handle near one end of the fourth elastic plate.

[0014] Optionally, a sixth elastic plate is fixedly connected to an outer wall on one side of the pressing handle, and the sixth elastic plate is symmetrically fixedly connected to limiting columns on the outer walls near both ends.

[0015] Optionally, elastic tubes are symmetrically fixedly connected to the outer walls of both sides of the sliding fixing seat, and one end of the elastic tube is fixedly connected to an abutting column.

[0016] Optionally, one end of the fifth elastic plate is fixedly connected to a limiting sleeve, and a plurality of segmented grooves are respectively provided on the outer walls of the limiting sleeve near the top and near the bottom, and two seventh elastic plates are fixedly connected to the outer wall of the limiting sleeve.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, by setting up a fixing component, the rat's head can be fixed, which can avoid the drill bit from being offset due to uneven force between the skull drill bit and the rat's skull during modeling, thereby preventing this offset phenomenon from having an adverse effect on the rat's postoperative healing. In addition, in the entire operation process of fixing the rat's head, the operation method is simple and easy, which saves the time spent on fixing the rat's head and improves the overall efficiency of the experiment.

[0019] By setting a limit component, the skull drill can be limited. In order to prevent the drill bit from being unstable when rotating at high speed when using the skull drill for modeling, the skull drill can also be forced to move away from the rat during the corresponding adjustment of the skull drill, preventing the skull drill from scratching the rat when adjusting the modeling angle, and avoiding interference variables that affect the modeling experiment results due to unexpected situations such as rat injuries, thereby ensuring that the modeling experiment can be carried out in an orderly manner under stable and precise conditions.

[0020] By arranging a fixing clamp, a support tube, a first rotating threaded post, a second elastic plate, and a weakened groove within the fixing assembly, the fixing clamp can be easily and effectively clamped to the rat's head by rotating the first rotating threaded post. This operation is very simple and quick, significantly reducing the time spent on fixing the rat's head and effectively improving experimental efficiency.

[0021] By arranging a first elastic plate, a support plate and a curved fixing plate in the fixing assembly, the rat body can be lifted by the support plate, which can cause the rat's head and body to be on the same horizontal plane, and can effectively prevent the vibration generated during the modeling process from causing damage to the rat's spine, thereby preventing the accuracy of subsequent experimental results from being interfered with due to damage to the spine.

[0022] By arranging a first sliding groove, a second sliding groove, a sliding column, a second rotating threaded column and a sliding support plate in the limiting assembly, the position of the sliding support plate can be flexibly adjusted by rotating one end of the second rotating threaded column with the anti-slip groove so that it is in the position where the rat needs to be modeled, thereby meeting the needs of the experiment. Such an arrangement improves the convenience of the device in actual use and provides a strong guarantee for the smooth progress of the experiment.

[0023] By arranging a sliding fixing seat, a limiting column, a pressing handle, a fourth elastic plate, a fifth elastic plate, a sixth elastic plate and a limiting sleeve in the limiting assembly, it can not only adapt to the outer wall contour of the skull electric drill, thereby providing a stable and effective fixation effect for the skull electric drill, but also, according to the specific needs of the experiment, the user can push the sliding fixing seat to slide along the outer wall of the sliding support plate to adjust the modeling angle of the skull drill bit, so that it can better serve the experimental operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0025] Figure 1 A schematic diagram of the first-person perspective structure of a fixed positioning assembly for an adjustable skull defect model;

[0026] Figure 2 A schematic diagram of the second-angle stereoscopic structure of the fixed positioning component for adjustable skull defect modeling;

[0027] Figure 3 It is a schematic diagram of the enlarged three-dimensional structure of the molding support plate and the first rotating groove;

[0028] Figure 4 It is an enlarged three-dimensional structural diagram of the rotating support plate and the molding limit block;

[0029] Figure 5 This is an enlarged three-dimensional structural diagram of the rotating support plate, the fixing clamp and the molding limit block;

[0030] Figure 6 for Figure 5 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0031] Figure 7 for Figure 6 The enlarged three-dimensional structure diagram at B in the middle;

[0032] Figure 8 This is an enlarged three-dimensional structural diagram of the third elastic plate and the supporting plate;

[0033] Figure 9This is an enlarged three-dimensional structural diagram of the sliding support plate and the second rotating threaded column;

[0034] Figure 10 It is an enlarged three-dimensional structural diagram of the sliding fixing seat and the elastic tube;

[0035] Figure 11 This is an enlarged first-person perspective diagram of the three-dimensional structure of the sliding fixing seat and the limiting sleeve;

[0036] Figure 12 This is an enlarged second-view perspective diagram of the three-dimensional structure of the sliding fixing seat and the limiting sleeve;

[0037] Figure 13 This is a schematic diagram of an enlarged first-perspective three-dimensional structure of the fourth elastic plate, the fifth elastic plate, and the sixth elastic plate;

[0038] Figure 14 This is a schematic diagram of the enlarged second-viewing perspective three-dimensional structure of the fourth elastic plate, the fifth elastic plate and the sixth elastic plate.

[0039] Reference numerals:

[0040] 1. Molding support plate; 101. Support protrusion; 102. First rotating groove; 2. Rotating support plate; 201. Molding limit block; 202. First sliding groove; 203. Second sliding groove; 204. Sliding column; 205. Second rotating groove; 206. First rotating threaded column; 207. Threaded through hole; 3. Support tube; 301. Fixing clamp; 302. First elastic plate; 303. Second elastic plate; 304. Clamping protrusion; 305. Third elastic plate; 306. Support Support plate; 307, curved fixing plate; 308, weakening groove; 4, sliding support plate; 401, second rotating threaded column; 402, limiting groove; 5, sliding fixing seat; 501, avoidance groove; 502, circular through hole; 503, elastic tube; 504, abutting column; 505, limiting hole; 6, fourth elastic plate; 601, pressing handle; 602, fifth elastic plate; 603, sixth elastic plate; 604, limiting column; 605, limiting sleeve; 606, seventh elastic plate.

[0041] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0042] The following, in conjunction with the accompanying drawings and specific embodiments, describes in detail an adjustable fixed positioning assembly for skull defect modeling provided by the present invention. It is also noted that, to provide a more detailed description, the following embodiments are optimal and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are provided solely for the purpose of describing the embodiments in greater detail and are not intended to limit the present invention.

[0043] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0044] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0045] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0046] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0047] like Figures 1 to 14As shown, an embodiment of the present invention provides an adjustable fixed positioning assembly for skull defect modeling, including a modeling support plate 1, four supporting protrusions 101 are fixedly connected to the bottom outer wall of the modeling support plate 1, and are distributed in a circular array, a first rotating groove 102 is provided on the top outer wall of the modeling support plate 1, a rotating support plate 2 is rotatably connected to the inner wall of the first rotating groove 102, and a modeling limit block 201 is fixedly connected to the top outer wall of the rotating support plate 2; a fixing assembly, the fixing assembly is used to fix the rat's head, and the fixing assembly is connected to the modeling limit block 201; a limiting assembly, the limiting assembly is used to limit the skull electric drill, and the limiting assembly is connected to the modeling limit block 201. Specifically, the molding tray 1 included in the device is an acrylic circular plate. The molding tray 1 made of acrylic material has certain corrosion resistance and a long service life. One end of the four support protrusions 101 is fixedly connected to the bottom outer wall of the molding tray 1 and is distributed in a circular array. The support protrusion 101 is composed of two cylinders of different diameters and is made of acrylic material. The outer wall of the end of the support protrusion 101 away from the molding tray 1 has been anti-slip treated to avoid the support protrusion 101 slipping when using the device, affecting the experiment of skull defect modeling on rats. The first rotating groove 102 is opened at the center position of the top outer wall of the molding support plate 1. The first rotating groove 102 is a circular groove body with a "convex" shaped cross section. The rotating support plate 2 is rotatably connected to the inner wall of the first rotating groove 102. The overall contour of the rotating support plate 2 is adapted to the contour of the first rotating groove 102. It is a circular plate made of acrylic material. The molding limit block 201 is fixedly connected to the top outer wall of the rotating support plate 2. The molding limit block 201 is an inverted "concave" shaped metal block as a whole.

[0048] The fixing assembly provided by the present application can be used to fix the head of a rat, and can avoid the deviation of the drill bit due to uneven force between the skull drill bit and the rat skull during modeling, thereby preventing this deviation from having an adverse effect on the postoperative healing of the rat. In addition, in the entire operation process of fixing the rat head, the operation method is simple and easy, saving the time spent on fixing the rat head and improving the overall efficiency of the experiment. The limiting assembly provided by the present application can be used to limit the skull electric drill, in order to prevent the electric drill bit from being unstable when rotating at high speed when using the skull electric drill for modeling, and can also force the skull electric drill to move away from the rat during the corresponding adjustment of the skull electric drill, preventing the skull electric drill from scratching the rat when adjusting the modeling angle, and avoiding interference variables that affect the results of the modeling experiment due to unexpected situations such as rat injuries, thereby ensuring that the modeling experiment can be carried out in an orderly manner under stable and accurate conditions.

[0049] like Figures 5 to 8As shown, the fixing assembly includes a support tube 3 fixedly connected to the outer wall of the molding limit block 201, and a threaded through hole 207 opened on the outer wall in the middle of the molding limit block 201, one end of the support tube 3 is fixedly connected to a fixing clamp 301, and the same first elastic plate 302 is fixedly connected to the bottom outer wall of the fixing clamp 301 near both ends, and the same second elastic plate 303 is fixedly connected to the inner wall of one side of the fixing clamp 301, and a weakening groove 308 is opened on the outer wall of one side of the second elastic plate 303, and a clamping protrusion 304 is symmetrically fixedly connected to the outer wall of one side of the fixing clamp 301 near both ends, and a first rotating threaded column 206 is screwed on the inner wall of the threaded through hole 207, and two third elastic plates 305 are fixedly connected to the top outer wall of the first elastic plate 302, and one end of the two third elastic plates 305 are fixedly connected to the same support plate 306, and a curved fixing plate 307 is fixedly connected to the outer wall of one end of the support plate 306.

[0050] Specifically, if Figure 5 and Figure 6 As shown, the fixing assembly includes a support tube 3, one end of which is fixedly connected to the outer wall of one side in the middle of the mold limit block 201. The support tube 3 is a circular metal tube, and a fixing clamp 301 is fixedly connected to one end of the support tube 3. The fixing clamp 301 is a "U"-shaped metal plate. When the fixing clamp 301 is subjected to force, the two ends will deform toward the middle, forming a clamping effect. The two ends of the first elastic plate 302 are fixedly connected to the bottom outer wall of the fixing clamp 301 near the two ends. The first elastic plate 302 is a "W"-shaped metal plate. When the first elastic plate 302 is subjected to force, it will deform along its bending direction. At this time, the middle part of the first elastic plate 302 lifts the rat's head during the deformation process. The two ends of the second elastic plate 303 are fixedly connected to the outer wall of the same fixing clamp 301 on the side away from the support tube 3. The second elastic plate 303 is a curved metal plate, and a curved weakening groove 308 is opened in the middle position of the second elastic plate 303 on the outer wall of the side close to the support tube 3. The second elastic plate 303 is bent in the opposite direction to the fixing clamp 301, and two clamping protrusions 304 are symmetrically fixed to the outer wall of the fixing clamp 301 near both ends. The clamping protrusions 304 are composed of two parts: a metal cuboid and a metal cylinder. The end of the clamping protrusion 304 with the metal cylinder will move toward the rat during the deformation of the fixing clamp 301 until the rat's head is fixed. Figure 4 、 Figure 5 and Figure 8As shown, the threaded through hole 207 is opened on the outer wall of one side in the middle of the molding limit block 201, and the first rotating threaded column 206 is screwed on the inner wall of the threaded through hole 207. The first rotating threaded column 206 is composed of three parts: a metal ball, a metal cylinder with threads and a metal cylinder with anti-slip grooves. The first rotating threaded column 206 passes through the inner wall of the support tube 3, and one end of the metal ball is in contact with the outer wall of the second elastic plate 303 on the side where the weakening groove 308 is opened.

[0051] Specifically, if Figures 6 to 8 As shown, one end of two third elastic plates 305 is symmetrically fixed to either side of the top outer wall of the first elastic plate 302. The third elastic plates 305 are C-shaped metal plates, and the other ends of the two third elastic plates 305 are respectively fixedly connected to the outer walls of the support plate 306. The support plate 306 is composed of two parts: a straight metal plate with several segmented grooves and a curved metal plate. When a rat is placed on the support plate 306, the third elastic plates 305 will deform along their curved direction due to the downward pressure of the support plate 306. The segmented grooves on the support plate 306 can adapt to the contours of the rat's body, firmly supporting the rat's body. One end of the curved fixing plate 307 is fixedly connected to the outer wall of one end of the support plate 306. The curved fixing plate 307 consists of three parts: a "C"-shaped metal plate, a wavy metal plate and an arc-shaped metal plate. The outer wall of the part of the curved fixing plate 307 with the wavy metal plate abuts against the bottom outer wall of the second elastic plate 303.

[0052] The rat, which has been anesthetized and skinned, is first placed on the support plate 306. At this time, the third elastic plate 305 will deform along its curved direction when subjected to the downward pressure of the support plate 306. The segmented grooves provided on the support plate 306 can adapt to the body contour of the rat and can stably support the rat's body. When the end of the metal cylinder provided with the anti-slip groove on the first rotating threaded column 206 is rotated clockwise, the first rotating threaded column 206 will rotate and shift in the direction of the second elastic plate 303. At this time, the end of the first rotating threaded column 206 with the metal ball will abut against the outer wall of the second elastic plate 303 provided with the weakened groove 308. The middle part of the second elastic plate 303 will be subjected to the pressure of the first rotating threaded column 206, causing the two ends of the second elastic plate 303 to deform in the direction of the first rotating threaded column 206, which will drive the two ends of the fixing clamp 301 to deform in the direction of the rat's head. At this time, both ends of the first elastic plate 302 are subjected to the squeezing force generated by the deformation of the fixing clamp 301, causing the first elastic plate 302 to deform along its bending direction. During the deformation process, the first elastic plate 302 will contact the top outer wall of the rotating support plate 2, while the middle portion thereof will deform away from the rotating support plate 2, causing the support plate 306 and the rat's head to move away from the rotating support plate 2. The end of the metal cylinder fixedly connected to the clamping protrusion 304 of the fixing clamp 301 will move toward the rat during the deformation process of the fixing clamp 301 until the rat's head is fixed. At the same time, as the second elastic member deforms, its center deforms toward the curved fixing plate 307, squeezing against the outer wall of the wavy metal portion of the curved fixing plate 307. This causes the "C"-shaped portion of the curved fixing plate 307 to deform along its curvature, driving the curved end of the curved fixing plate 307 to deform toward the rotating support plate 2, until the bottom outer wall of the curved metal portion of the curved fixing plate 307 rests against the rat's nose bridge. Combined with the aforementioned straight metal plate portion of the support plate 306, which is provided with several segmented grooves, this structure allows for rapid head fixation. This not only saves time and improves experimental efficiency, but also elevates the rat's body, aligning its head with the body, preventing damage to the rat's spine from vibrations generated by the skull drill during the modeling process.

[0053] like Figure 4 and Figure 5 As shown, the limiting assembly includes a first sliding groove 202 and a second sliding groove 203 symmetrically opened on the outer and inner walls of the top of the molding limiting block 201. A sliding column 204 is fixedly connected to the inner wall of the first sliding groove 202, and a second rotating groove 205 is opened on the inner wall of the second sliding groove 203. Figure 9 As shown, the inner wall of the second rotating groove 205 is rotatably connected to the second rotating threaded column 401, the outer wall of the sliding column 204 is slidably connected to the sliding support plate 4, and the outer wall of the sliding support plate 4 is provided with a plurality of limiting grooves 402. Figures 4 to 6 As shown, the limiting assembly includes a first sliding groove 202 and a second sliding groove 203 symmetrically provided on both sides of the outer wall at the top of the molding limit block 201. The first sliding groove 202 and the second sliding groove 203 are both square straight grooves. A sliding column 204 is fixedly connected to the inner wall of one end of the first sliding groove 202. The sliding column 204 is a metal cylinder. A second rotating groove 205 is provided on the inner wall of one end of the second sliding groove 203. The second rotating groove 205 is a circular groove body with a "convex" shape in cross section. One end of the second rotating threaded column 401 is rotatably connected to the inner wall of the second rotating groove 205. The second rotating threaded column 401 consists of three parts: a "convex" shaped metal protrusion, a metal cylinder with threads, and a metal cylinder with an anti-slip groove. One end of the sliding support plate 4 is slidably connected to the outer wall of the sliding column 204, and the other end of the sliding support plate 4 is screwed to the outer wall of the second rotating threaded column 401. For example Figure 9 As shown, the sliding support plate 4 is composed of five parts: two "C"-shaped metal plates, two square metal plates and a hollow metal cylinder with threads on the inner wall, and a number of circular limiting grooves 402 are opened on the outer wall of the two "C"-shaped metal plates on the sliding support plate 4. When the end with the anti-slip groove on the second rotating threaded column 401 is rotated clockwise, one end of the sliding support plate 4 will be pushed along the inner wall of the second sliding groove 203 and displaced toward the second rotating groove 205. The other end of the sliding support plate 4 will slide on the outer wall of the sliding column 204. When the end with the anti-slip groove on the second rotating threaded column 401 is rotated counterclockwise, one end of the sliding support plate 4 will be pushed along the inner wall of the second sliding groove 203 and displaced in the direction away from the second rotating groove 205. With the above structure, the end with the anti-slip groove on the second rotating threaded column 401 can be rotated according to actual needs to adjust the sliding support plate 4 to a suitable position.

[0054] like Figures 10 to 14As shown, a sliding fixed seat 5 is slidably connected to the outer wall of the sliding support plate 4, an avoidance groove 501 is provided on the top outer wall of the sliding fixed seat 5, a circular through hole 502 is provided on the bottom inner wall of the sliding fixed seat 5, and a fourth elastic plate 6 is fixedly connected to the inner walls at both ends of the sliding fixed seat 5, a pressing handle 601 is fixedly connected to one end of the fourth elastic plate 6, a fifth elastic plate 602 is fixedly connected to the outer wall of the pressing handle 601 near one end of the fourth elastic plate 6, a sixth elastic plate 603 is fixedly connected to the outer wall on one side of the pressing handle 601, and the sixth elastic plate 603 is symmetrically fixedly connected to the limiting columns 604 near the outer walls at both ends. Elastic tubes 503 are symmetrically fixedly connected to the outer walls of both sides of the sliding fixed seat 5, one end of the elastic tube 503 is fixedly connected to the abutment column 504, one end of the fifth elastic plate 602 is fixedly connected to the limiting sleeve 605, and several segmented grooves are respectively opened on the outer walls of the limiting sleeve 605 near the top and near the bottom, and two seventh elastic plates 606 are fixedly connected to the outer wall of the limiting sleeve 605.

[0055] Specifically, if Figure 10 As shown, the sliding mount 5 is slidably connected to the outer wall of the "C"-shaped metal plate portion of the sliding support plate 4. The sliding mount 5 is a fan-shaped metal block. Two grooves are defined on the outer wall of the sliding mount 5, extending through both ends of the sliding mount 5 and matching the contour of the "C"-shaped metal plate portion of the sliding support plate 4. This facilitates sliding on the outer wall of the sliding support plate 4. A fan-shaped escape groove 501 is defined on the top outer wall of the sliding mount. A circular through-hole 502 is defined at the center of the bottom inner wall of the escape groove 501. The circular through-hole 502 provides an escape for the skull drill. One end of the two elastic tubes 503 is symmetrically fixedly connected to the inner walls on both sides of the avoidance groove 501. The elastic tube 503 is a metal tube with a curvature at one end and a "C" shape in the middle. With the cooperation between the two elastic tubes 503, a fixing effect can be provided for the skull electric drill. The abutment column 504 is fixedly connected to the outer wall of the elastic tube 503 away from the curvature. The abutment column 504 is a metal cylinder with curvature at both ends. Two limiting holes 505 are symmetrically opened on the inner wall of the sliding fixing seat 5 on both sides near the sliding column 204. The limiting hole 505 is a circular groove body.

[0056] Specifically, if Figures 11 to 14As shown, one end of the two fourth elastic plates 6 is symmetrically fixedly connected to the inner wall of the sliding fixing seat 5 near the bottom, and the fourth elastic plate 6 is an "S"-shaped metal plate. When the fourth elastic plate 6 is subjected to force, it will deform along the direction of its bending. The pressing handle 601 is fixedly connected to the other end of the fourth elastic plate 6 near the end of the rotating support plate 2. The pressing handle 601 consists of two parts: a square metal plate and a metal cylinder. A fifth elastic plate 602 is fixedly connected to the outer wall of the pressing handle 601 near the end of the fourth elastic plate 6. The fifth elastic plate 602 is an "S"-shaped metal plate. When the fifth elastic plate 602 After being subjected to force, it will deform in the direction of its bending. The pressing handle 601 of the two pressing handles 601, which is close to the sliding column 204, is fixedly connected to the sixth elastic plate 603 near the middle position of the outer wall on the side away from the fifth elastic plate 602. The sixth elastic plate 603 is a "C"-shaped metal plate. One end of the two limiting columns 604 is symmetrically fixedly connected to the outer wall near the two ends of the sixth elastic plate 603. The limiting column 604 is a metal cylinder with an arc at one end. The limiting column 604 passes through the limiting hole 505 and is inserted into the limiting groove 402 provided on the sliding plate, which can limit the sliding fixed seat 5. The outer walls of the two abutment columns 504 mentioned in the article are symmetrically abutted on both sides of the outer wall of the sixth elastic plate 603 near the fifth elastic plate 602. The ends of the two fifth elastic plates 602 away from the pressing handle 601 are symmetrically fixedly connected to the outer wall of the limiting sleeve 605. The limiting sleeve 605 is composed of three parts: an arc-shaped metal circular plate that expands outward at the top, a hollow precious metal cylinder in the middle, and an arc-shaped metal circular plate that contracts inward at the bottom. A number of segmented grooves are respectively provided on the outer walls of the limiting sleeve 605 near the bottom and near the bottom. When the skull electric drill is inserted, the top of the limiting sleeve 605 will cooperate with the segmented grooves. , it deforms along the direction of its bending, and the bottom of the limiting sleeve 605 will deform along the direction of its bending with the cooperation of the segmented groove, which can fix the skull electric drill, so that it can adapt to the outer wall contour of the skull electric drill and provide an effective fixing effect for the skull electric drill. One end of the two seventh elastic plates 606 is symmetrically fixedly connected to the outer wall of the limiting sleeve 605, and the other end of the seventh elastic plate 606 is fixedly connected to the outer wall near the middle position of the top of the sliding fixing seat 5. The seventh elastic plate 606 is an "S"-shaped metal plate. When the seventh elastic plate 606 is subjected to force, it will deform along the direction of its bending.

[0057] When the user pinches the two pressing handles 601 with his index finger and thumb, the two pressing handles 601 are displaced in directions relative to each other. At this time, the sixth elastic plate 603 will be deformed along the direction of its bending under the force. Cooperating with the two abutting forces, the two ends of the sixth elastic plate 603 are deformed in directions relative to each other, and drive the two limiting columns 604 to be displaced in directions relative to each other. At this time, the limiting columns 604 are pulled out of the limiting grooves 402, releasing the limit on the sliding fixing seat 5, and the sliding fixing seat 5 can be pushed to slide on the outer wall of the sliding support plate 4 according to experimental needs to adjust the molding angle of the skull drill bit. At the same time, when pinching the pressing handle 601, the fifth elastic plate 602 will be squeezed by the pressing handle 601, and will deform along the direction of its bending, and push the limiting sleeve 605 to move in the direction away from the sliding fixing seat 5. At this time, the skull electric drill fixed by the limiting sleeve 605 will follow the limiting sleeve 605 to move in the direction away from the sliding fixing seat 5. At the same time, the limiting sleeve 605 will give the seventh elastic plate 606 a pulling force, causing the seventh elastic plate 606 to deform along the direction of its bending. When the two pressing handles 601 are no longer pinched, the fourth elastic plate 6, the fifth elastic plate 602 and the seventh elastic plate 606 will restore their deformation under their own elastic action. The fourth elastic plate 6 will pull the pressing handle 601 to reset during the process of restoring the deformation, and the fifth elastic plate 602 and the seventh elastic plate 606 will pull the limiting sleeve 605 to reset during the process of restoring the deformation. At this time, the skull electric drill fixed by the limiting sleeve 605 will follow the limiting sleeve 605 to move toward the sliding fixing seat 5. The above structural setting can not only fix the skull drill bit, but also release the limit on the sliding fixing seat 5 by pinching the pressing handle 601.

[0058] The workflow of the technical solution provided by the present invention is as follows:

[0059] First, place the anesthetized and skinned rat on the support plate 306. At this time, the third elastic plate 305 will be deformed in the direction of its bending when it is subjected to the downward pressure of the support plate 306. The segmented grooves on the support plate 306 can adapt to the body contour of the rat and can firmly hold up the rat's body. When the end of the metal cylinder with the anti-slip groove on the first rotating threaded column 206 is rotated clockwise, the first rotating threaded column 206 will rotate and displace in the direction of the second elastic plate 303. The end of the first rotating threaded column 206 with the metal ball will be pressed against the outer wall of the second elastic plate 303 on the side with the weakened groove 308, and the middle part of the second elastic plate 303 will be pressed by the first rotating threaded column 206, so that the two ends of the second elastic plate 303 will be deformed toward the first rotating threaded column 206, which will drive the two ends of the fixing clip 301 to deform toward the head of the rat. At this time, the two ends of the first elastic plate 302 will be squeezed by the squeezing force generated by the deformation of the fixing clip 301. 302 will deform along its bending direction, and during the deformation of the first elastic plate 302, it will come into contact with the top outer wall of the rotating support plate 2, and the middle part thereof will deform in the direction away from the rotating support plate 2, which will drive the supporting support plate 306 and the rat's head to move in the direction away from the rotating support plate 2, and the end of the metal cylinder fixedly connected to the clamping protrusion 304 of the fixing clip 301 will move toward the direction of the rat during the deformation of the fixing clip 301 until the rat's head is fixed. At the same time, During the deformation process, the middle part of the second elastic member deforms toward the direction close to the curved fixing plate 307, and is squeezed onto the outer wall of the curved fixing plate 307 having the wavy metal plate portion, causing the portion of the curved fixing plate 307 having the "C"-shaped metal plate to deform along its bending direction, and driving the end of the curved fixing plate 307 having the arc-shaped metal plate portion to deform toward the rotating support plate 2, until the bottom outer wall of the curved fixing plate 307 having the arc-shaped metal plate portion fits the rat's nose bridge.

[0060] Then, when the end with the anti-slip groove on the second rotating threaded column 401 is rotated clockwise, one end of the sliding support plate 4 will be pushed along the inner wall of the second sliding groove 203 and displaced toward the second rotating groove 205, and the other end of the sliding support plate 4 will slide on the outer wall of the sliding column 204. When the end with the anti-slip groove on the second rotating threaded column 401 is rotated counterclockwise, one end of the sliding support plate 4 will be pushed along the inner wall of the second sliding groove 203 and displaced in the direction away from the second rotating groove 205. The above structure can be set to rotate the end with the anti-slip groove on the second rotating threaded column 401 according to actual needs, and adjust the sliding support plate 4 to the position on the rat skull where modeling is required.

[0061] Then insert the skull drill into the inner wall of the limiting sleeve 605. At this time, the top of the limiting sleeve 605 will be deformed along the bending direction under the cooperation of the segmented groove, and the bottom of the limiting sleeve 605 will be deformed along the bending direction under the cooperation of the segmented groove. The skull drill can be fixed, and then the skull drill can be pressed in the direction of the rotating support plate 2 to model the rat's skull. When the modeling angle of the skull drill needs to be adjusted, the two pressing handles 601 can be pinched by the user's index finger and thumb. 601 are displaced in directions relative to each other. At this time, the sixth elastic plate 603 is deformed in the direction of its bending under the force. With the two abutting forces, the two ends of the sixth elastic plate 603 are deformed in directions relative to each other, and drive the two limiting posts 604 to displace in directions relative to each other. At this time, the limiting posts 604 are pulled out of the limiting grooves 402, releasing the limit on the sliding fixing seat 5. Then, the sliding fixing seat 5 can be pushed to slide on the outer wall of the sliding support plate 4 according to the experimental needs to adjust the molding angle of the skull drill bit. At the same time, when pinching the pressing handle 601, the fifth elastic plate 602 will be squeezed by the pressing handle 601, and will be deformed along the direction of its bending, and push the limiting sleeve 605 to move in the direction away from the sliding fixing seat 5. At this time, the skull electric drill fixed by the limiting sleeve 605 will follow the limiting sleeve 605 and move in the direction away from the sliding fixing seat 5. At the same time, the limiting sleeve 605 will exert a pulling force on the seventh elastic plate 606, causing the seventh elastic plate 606 to deform along the direction of its bending. When the two are no longer pinched, When the pressing handle 601 is pressed, the fourth elastic plate 6, the fifth elastic plate 602 and the seventh elastic plate 606 will restore their deformation under their own elastic action. The fourth elastic plate 6 will pull the pressing handle 601 to reset during the process of restoring the deformation, and the fifth elastic plate 602 and the seventh elastic plate 606 will pull the limiting sleeve 605 to reset during the process of restoring the deformation. At this time, the skull electric drill fixed by the limiting sleeve 605 will follow the limiting sleeve 605 to move toward the direction of the sliding fixing seat 5, and then the skull electric drill can be pressed again to model the rat's skull again.

[0062] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. Preferred embodiments of the present invention are described in detail to provide a thorough understanding of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An adjustable fixed positioning assembly for skull defect modeling, characterized in that: The invention comprises a modeling support plate, a fixing assembly and a limiting assembly, wherein four supporting protrusions are fixedly connected to the bottom outer wall of the modeling support plate and are distributed in a circular array, a first rotating groove is opened on the top outer wall of the modeling support plate, a rotating support plate is rotatably connected to the inner wall of the first rotating groove, a modeling limiting block is fixedly connected to the top outer wall of the rotating support plate, and a fixing assembly for fixing the rat's head and a limiting assembly for limiting the skull electric drill are provided on the modeling limiting block; The limiting assembly includes a first sliding groove and a second sliding groove symmetrically opened on the outer inner wall of the top of the molding limiting block, a sliding column is fixedly connected to the inner wall of the first sliding groove, a second rotating groove is opened on the inner wall of the second sliding groove, and a second rotating threaded column is rotatably connected to the inner wall of the second rotating groove; A sliding support plate is slidably connected to the outer wall of the sliding column, a plurality of limiting grooves are opened on the outer wall of the sliding support plate, a sliding fixing seat is slidably connected to the outer wall of the sliding support plate, an avoidance groove is opened on the top outer wall of the sliding fixing seat, and a circular through hole is opened on the bottom inner wall of the sliding fixing seat; A fourth elastic plate is fixedly connected to the inner walls at both ends of the sliding fixing seat, a pressing handle is fixedly connected to one end of the fourth elastic plate, and a fifth elastic plate is fixedly connected to the outer wall of the pressing handle near one end of the fourth elastic plate; One end of the fifth elastic plate is fixedly connected to a limiting sleeve, and a plurality of segmented grooves are respectively opened on the outer wall of the limiting sleeve near the top and near the bottom, and two seventh elastic plates are fixedly connected to the outer wall of the limiting sleeve.

2. The adjustable skull defect modeling fixing and positioning assembly according to claim 1, characterized in that: The fixing assembly includes a support tube fixedly connected to the outer wall of the molding limit block, and a threaded through hole opened on the middle outer wall of the molding limit block. One end of the support tube is fixedly connected to a fixing clamp, and the same first elastic plate is fixedly connected to the bottom outer wall of the fixing clamp near both ends.

3. The adjustable skull defect modeling fixing and positioning assembly according to claim 2, characterized in that: A second elastic plate is fixedly connected to an inner wall of one side of the fixing clamp, a weakened groove is provided on an outer wall of one side of the second elastic plate, and clamping protrusions are symmetrically fixedly connected to the outer wall of one side of the fixing clamp near both ends.

4. The adjustable skull defect modeling fixing and positioning assembly according to claim 2, characterized in that: Two third elastic plates are fixedly connected to the top outer wall of the first elastic plate, one end of the two third elastic plates is fixedly connected to the same support plate, a curved fixing plate is fixedly connected to the outer wall of one end of the support plate, and a first rotating threaded column is screwed on the inner wall of the threaded through hole.

5. The adjustable skull defect modeling fixing and positioning assembly according to claim 1, characterized in that: A sixth elastic plate is fixedly connected to an outer wall of one side of the pressing handle, and the sixth elastic plate is symmetrically fixedly connected to limiting columns on outer walls near both ends.

6. The adjustable skull defect modeling fixing and positioning assembly according to claim 1, characterized in that: Elastic tubes are symmetrically and fixedly connected to the outer walls of both sides of the sliding fixing seat, and one end of the elastic tube is fixedly connected to an abutting column.

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