Periosteum distraction device attached to skull of patient

Abstract

The periosteum distraction device attached to the skull of the patient comprises a distraction plate, the end of the distraction plate is arranged to be an arc-shaped tip, and the surface of the distraction plate is an arc surface and can be in smooth transition with the arc-shaped tip; the distraction plate is punched and formed by a hydraulic machine and a mold matched with skull data of a patient; a threaded hole and a plurality of fixing holes are formed in the distraction plate; the device further comprises a distraction screw, a threaded needle, an adapter and a drill bit. Wherein an inner hole with two through ends is formed in the distraction screw, and one end of the threaded needle and one end of the drill bit can penetrate through the inner hole; the threaded needle is fixedly connected with a limiting block a, and the drill bit is fixedly connected with a limiting block b. The distraction plate in the periosteum distraction device is punched and formed through a mold (the combination of the male mold and the female mold) matched with data of the skull of a patient, the surface of the formed distraction plate is consistent with the surface of the skull in shape, the distraction plate can be well attached to the skull and the periosteum, and distraction and recovery of the periosteum are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of periosteal distraction, and specifically provides a periosteal distraction device that fits the patient's skull. Background Art

[0002] The principle of periosteal distraction technology is to stimulate the growth and differentiation of periosteal cells by distracting the periosteum, so as to promote bone growth and repair. Periosteal distraction technology is a non-surgical treatment method, which improves the function and structure of the skeletal system by distracting the periosteum. Periosteal distraction technology can be used to treat a variety of skeletal system diseases, such as fractures, osteoporosis, osteoarthritis, and some limb ischemic diseases.

[0003] In recent years, a method of treating central nervous system diseases by periosteal distraction has been proposed. Existing periosteal distraction devices are generally applicable to limb ischemic diseases, but their applicability is poor when used for skull periosteal distraction. Each person's skull is also different. In particular, the distraction plates in existing periosteal distraction devices cannot be customized according to each person's skull, and the general distraction plates cannot effectively fit the patient's bones and periosteum, which is not conducive to periosteal recovery.

[0004] Therefore, we propose a periosteal distraction device that fits the patient's skull. Summary of the Invention

[0005] The purpose of the present invention is to provide a periosteal distraction device that fits the patient's skull, so as to solve the problem in the above background art that the distraction plates in existing periosteal distraction devices cannot be customized according to each person's skull, and the general distraction plates cannot effectively fit the patient's bones and periosteum, which is not conducive to periosteal recovery.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A periosteal distraction device that fits the patient's skull includes a distraction plate. The end of the distraction plate is provided with an arc-shaped tip, and the surface of the distraction plate is an arc surface and can smoothly transition with the arc-shaped tip; the distraction plate is formed by stamping with a hydraulic press and a mold that matches the patient's skull data;

[0008] Threaded holes and a plurality of fixing holes are provided on the distraction plate;

[0009] It also includes a distraction screw, a threaded needle, a swivel joint, and a drill bit; wherein, the distraction screw is provided with an inner hole that penetrates through both ends, and one end of the threaded needle and one end of the drill bit can pass through the inner hole;

[0010] A limiting block a is fixedly connected to the threaded needle, and a limiting block b is fixedly connected to the drill bit;

[0011] One end of the adapter is provided with a square socket, one end of the threaded pin is set as a square part, the square socket can be sleeved on the square part, and the triangular rod part at the other end of the adapter can be installed on the electric drill.

[0012] Preferably, the above further includes a dual-purpose knob. One end of the dual-purpose knob is set as a flat head, and the flat head can be stuck on one end of the threaded pin with a square part, and the threaded pin can be twisted through the dual-purpose knob;

[0013] The other end of the dual-purpose knob is set as a hexagonal socket, and the hexagonal socket can be sleeved on the hexagonal part at one end of the tension screw, and the tension screw can be twisted through the dual-purpose knob.

[0014] The present invention also provides a method for processing a distraction plate that fits the patient's skull, which is used to process the above-mentioned distraction plate, and includes the following steps:

[0015] S1. Collect the skull information data of the patient's brain through a CT scanner;

[0016] S2. Input the collected skull information data into a 3D printer, and then, based on the skull information data of the patient and combined with the requirements of periosteal distraction, establish a three-dimensional model of the corresponding mold;

[0017] S3. Print the female mold and the male mold respectively through the 3D printer;

[0018] S4. Place the unshaped distraction plate into the female mold, and after closing the mold, perform stamping through a hydraulic press;

[0019] S5. After stamping is completed, take it out, and then the shaping of the distraction plate is completed.

[0020] Preferably, among the above, the printing material used by the 3D printer is stainless steel.

[0021] The present invention also provides a processing device for a distraction plate that fits the patient's skull, which is used to process the above-mentioned distraction plate, and includes a 3D printer, a hydraulic press, and a positioning seat. Among them, the positioning seat can be installed on the 3D printer or the hydraulic press;

[0022] The 3D printer is divided into an upper and a lower layer structure, and the upper and lower layer structures can print simultaneously;

[0023] The positioning seat is provided with a lower support structure and an upper support structure. The upper support structure can slide up and down directly above the lower support structure and can be fixed at a certain position; a male mold printing seat is installed on the upper support structure, and a female mold printing seat is installed on the lower support structure;

[0024] The 3D printer can print a male mold on the male mold printing seat and a female mold on the female mold printing seat simultaneously.

[0025] Preferably, the lower support structure includes a fixed block fixed on the positioning seat, the upper support structure includes a movable block arranged directly above the fixed block, one end of the fixed block and one end of the movable block are both fixedly connected with a baffle plate, the center of one side of the baffle plate is fixedly connected with a square rod, the center of one end face of the square rod is fixedly connected with a screw rod, a threaded compression sleeve is threadedly installed on the screw rod, and one side of the threaded compression sleeve is fixedly connected with a handle A;

[0026] Both the male mold printing seat and the female mold printing seat are connected with a sleeve block, a square opening is formed on the sleeve block, and the sleeve block can be sleeved on the square rod through the square opening, and the depth of the square opening is greater than the length of the square rod.

[0027] Preferably, a sliding column is fixedly connected to the fixed block, a sliding hole is formed on the movable block, and the sliding hole is slidably sleeved on the sliding column;

[0028] It further includes a fixed-length rod with a square cross-section. Square grooves are respectively formed on the top surface of the fixed block and the bottom surface of the movable block in an aligned manner, and both ends of the fixed-length rod can be inserted into the two square grooves respectively.

[0029] Preferably, the interior of the 3D printer is divided into an upper area and a lower area by a semi-closed plate. A positioning groove is formed on the inner bottom of the lower area, the positioning seat can be placed in the positioning groove, a handle B is fixedly connected to one side of the positioning seat. When the positioning seat is placed in the positioning groove, the male mold printing seat and the female mold printing seat are respectively in the upper area and the lower area, and the upper surfaces of the male mold printing seat and the female mold printing seat are flush with the initial printing plane of the 3D printer.

[0030] Preferably, a support seat extending outward is arranged on one side of the bottom of the 3D printer, and the punch of the hydraulic press is arranged directly above the support seat.

[0031] Preferably, a square magnet is fixedly connected to the sleeve block. The male mold printing seat and the female mold printing seat are made of iron or high-carbon steel and can be attracted by the square magnet; and square notch openings that can be sleeved on the square magnet are formed on both the male mold printing seat and the female mold printing seat.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. The distraction plate in the periosteal distraction device of the present invention is formed by stamping with a mold (a combination of a male mold and a female mold) that matches the patient's skull data. After forming, the surface of the distraction plate is consistent with the shape of the skull surface, enabling very good fitting with the skull and the periosteum, which is beneficial for periosteal distraction and recovery.

[0034] 2. The distraction plate in the periosteal distraction device of the present invention has an arc-shaped tip (a thinner design) at the end, and its shape and function are similar to those of a periosteal elevator (periosteal dissector spoon). It can directly perform periosteal dissection while inserting the distraction plate, which is very convenient.

[0035] 3. In the periosteal distraction device of the present invention, a limiting block a is fixedly connected to the threaded needle, and a limiting block b is fixedly connected to the drill bit, which can limit the depth of drilling into the skull and reduce the surgical error rate.

[0036] 4. In the processing method of the distraction plate of the present invention, the female mold and the male mold are respectively printed by a 3D printer based on the patient's skull information data, and then the distraction plate is processed. The distraction plate for each patient is customized, which can not only be applied to the periosteal distraction of different patients' skulls, but also be applied to the periosteal distraction of other limbs of the patient, with wide applicability.

[0037] 5. In the processing device of the distraction plate of the present invention, the 3D printer can print the female mold and the male mold simultaneously, with high efficiency; by using the lower support structure and the upper support structure, the position correspondence of the female mold and the male mold can be directly completed, and with the cooperation of the positioning seat, the alignment can be directly completed when the female mold and the male mold are printed and when the molds are closed, which is fast and convenient.

[0038] 6. In the processing device of the distraction plate of the present invention, with the cooperation of the positioning seat, the 3D printer and the hydraulic press, they can be assembled together. After printing the mold, it is not necessary to move the mold too much, and the mold can be directly closed and pressurized to form the distraction plate, which is very convenient.

[0039] 7. By using the personalized mold method to press the distraction plate, only one specification of the distraction plate needs to be prepared in the warehouse, and there is no need to prepare multiple specifications of the distraction plate. This can save the factory warehouse space and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic structural diagram of the periosteal distraction device that fits the patient's skull in the embodiment of the present invention.

[0041] Figure 2 It is a schematic diagram of another perspective of the periosteal distraction device that fits the patient's skull in the embodiment of the present invention.

[0042] Figure 3 It is a schematic structural diagram of the male mold and the female mold during stamping and cooperation in the embodiment of the present invention.

[0043] Figure 4 This is a schematic structural diagram of the upper support structure and the lower support structure in the embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the punch printing seat and the die printing seat in the embodiment of the present invention during 3D printing.

[0045] Figure 6 This is a schematic structural diagram of the sleeve block in the embodiment of the present invention.

[0046] Figure 7 This is a schematic structural diagram of the 3D printer in the embodiment of the present invention.

[0047] Figure 8 This is a schematic structural diagram of the distraction plate in Embodiment 5 of the present invention.

[0048] Figure 9 This is a schematic diagram of the usage process of the periosteum distraction device in Embodiment 5 of the present invention.

[0049] In the figure: 100, distraction plate; 101, threaded hole; 102, fixing hole; 200, threaded pin; 201, self-tapping thread; 202, smooth part; 203, limit block a; 204, square part; 300, dual-purpose knob; 301, "one" character opening; 302, hexagonal opening; 400, distraction screw; 401, hexagonal part; 402, marking groove; 403, inner hole; 500, adapter; 501, round rod part; 502, triangular rod part; 503, square sleeve opening; 600, drill bit; 601, drill wire part; 602, limit block b; 700, simulated skull; 701, simulated periosteum; 10, hydraulic press; 20, 3D printer; 21, upper area; 22, semi-closed plate; 23, lower area; 24, positioning groove; 25, support seat; 30, positioning seat; 31, handle B; 40, fixing block; 41, square groove; 42, fixed-length rod; 43, sliding column; 50, movable block; 51, sliding hole; 52, baffle; 53, square rod; 54, screw; 55, threaded compression sleeve; 56, handle A; 60, punch printing seat; 61, punch; 70, die printing seat; 71, die; 80, sleeve block; 81, square opening; 82, square magnet. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment 1

[0052] Please refer toFigure 1-2 , the present invention provides a technical solution:

[0053] As Figure 1 shown, a periosteum distraction device that fits the patient's skull includes a distraction plate 100. The end of the distraction plate 100 is set as an arc tip (the tip is designed to be thinner), which can be used to directly separate the periosteum; the surface of the distraction plate 100 is an arc surface and can smoothly transition with the arc tip; the distraction plate 100 is formed by stamping with a hydraulic press 10 and a mold matching the patient's skull data; it can fit the periosteum and the skull.

[0054] As Figure 1 shown, the distraction plate 100 is provided with a threaded hole 101 and a plurality of fixing holes 102; generally, at least 2 fixing holes 102 are designed. Among them, the threaded hole 101 cooperates with a distraction screw 400 to distract the periosteum by adjusting the distraction screw 400, and two fixing holes 102 can select appropriate fixing bone pins as needed to fix the distraction plate 100 during the operation to prevent it from shaking and facilitate subsequent drilling and driving in the threaded pin 200.

[0055] During implementation, as Figure 1 and Figure 2 shown, it also includes a distraction screw 400, a threaded pin 200 (multiple can also be set, and some can also act as fixing bone pins), a adapter 500, and a drill bit 600; among them, the distraction screw 400 is provided with an inner hole 403 that penetrates through both ends, and one end of the threaded pin 200 and one end of the drill bit 600 can both pass through the inner hole 403. Among them, the outer surface and the inner surface of the head of the distraction screw 400 are both designed as hexagons.

[0056] Specifically, a limit block a203 is fixedly connected to the threaded pin 200, and a limit block b602 is fixedly connected to the drill bit 600; the depth can be accurately controlled through the limit block a203 and the limit block b602. One end of the drill bit 600 is provided with a drill wire part 601, and the limit block b602 is located at one end of the drill wire part 601.

[0057] As Figure 2 shown, one end of the adapter 500 is provided with a square socket 503, one end of the threaded pin 200 is set as a square part 204, and the square socket 503 can be sleeved on the square part 204. The triangular rod part 502 at the other end of the adapter 500 can be installed on an electric drill. The function of the adapter 500 is to serve as an intermediate transmission connecting part between the electric drill and the threaded pin 200. And one end of the threaded pin 200 is provided with a sharp angle, and a self-tapping thread 201 is provided at the sharp angle part, which enables the threaded pin 200 to have self-tapping performance. The middle part of the threaded pin 200 is set as a smooth part 202. And one end of the adapter 500 is set as a round rod part 501.

[0058] The threaded pin 200 can be driven into the bone through the inner hole 403 of the distraction screw 400 and the self-tapping thread 201, and is thread-fixed to the bone mass, so that the distraction screw 400 and the distraction plate 100 are fixed on the skull. During implementation, the threaded pin 200 has a fixed length, and there is no need to cut the tail end of the Kirschner wire with scissors. There is no sharp tail end of the threaded pin 200 exposed, and the safety is high.

[0059] During implementation, it further includes a dual-purpose knob 300. One end of the dual-purpose knob 300 is set as a flat head 301. The flat head 301 can be stuck on one end of the threaded pin 200 with a square part 204, and the threaded pin 200 can be twisted through the dual-purpose knob 300. At this time, the function of the dual-purpose knob 300 is to connect the threaded pin 200 to facilitate the twisting of the threaded pin 200.

[0060] The other end of the dual-purpose knob 300 is set as a hexagon socket 302. The hexagon socket 302 can be sleeved on the hexagon part 401 at one end of the distraction screw 400, and the distraction screw 400 can be twisted through the dual-purpose knob 300. At this time, the function of the dual-purpose knob 300 is to connect the distraction screw 400 to facilitate the twisting of the distraction screw 400.

[0061] Among them, a marking groove 402 is also provided on the outer surface of the hexagon part 401 of the distraction screw 400, which is convenient for marking during use.

[0062] Embodiment 2

[0063] Different from Embodiment 1, this embodiment proposes a processing method for the distraction plate that fits the patient's skull. It is used to process the distraction plate in Embodiment 1 and includes the following steps: S1. Collect the skull information data of the patient's brain through a CT scanner; S2. Input the collected skull information data into the 3D printer 20, and then, based on the patient's skull information data and combined with the requirements of periosteal distraction, establish a three-dimensional model of the corresponding mold; S3. Through the 3D printer 20, print out the female mold 71 and the male mold 61 respectively; S4. Place the unshaped distraction plate 100 into the female mold 71. After closing the mold, perform stamping through the hydraulic press 10; S5. After stamping is completed, take it out, and then the shaping of the distraction plate 100 is completed.

[0064] It should be noted that the printing material used by the 3D printer 20 is stainless steel. By using stainless steel material, the material cost can be further reduced.

[0065] In the above processing method of the distraction plate, the concave die 71 and the convex die 61 are respectively printed by a 3D printer based on the patient's skull information data, and then the distraction plate is processed. The distraction plate for each patient is customized, which can not only be applied to the periosteal distraction of different patients' skulls, but also be applied to the periosteal distraction of other limbs of the patient, with wide applicability.

[0066] However, since the existing 3D printing technology is not yet fully mature, if 3D printing is used to directly print a distraction plate that conforms to the patient's skull, the following problems will occur: ① The threaded holes basically cannot meet the requirements through 3D printing. If further drilling of threaded holes is required after printing, the operation process in the hospital will be relatively troublesome; ② When printing, the distraction plate is connected to the printing base, and separation and processing are still required, which is also relatively troublesome.

[0067] For the above first problem, the present invention directly performs plastic shaping processing on the semi-finished distraction plate by respectively printing the concave die 71 and the convex die 61. The structures of the die and the distraction plate correspond to each other. For example, for the threaded holes on the distraction plate, the threaded holes can be processed on the semi-finished distraction plate first. There are reserved spaces corresponding to the threaded holes in the two dies. When pressing down, they are not stressed or are slightly stressed. Because this shaping is a micro-deformation operation, as long as the processing steps are accurately operated, the threaded holes are basically not affected.

[0068] For the above second problem, the concave die 71 and the convex die 61 are for one-time use (so it is more cost-effective to use stainless steel printing materials), that is, there is no problem of the distraction plate being separated from the printing base, and basically no other processing procedures are required in the hospital, which is very fast and convenient.

[0069] Embodiment 3

[0070] Different from Embodiment 1, please refer to Figures 3-7 , a processing device for a distraction plate that fits the patient's skull, which is used to process the distraction plate 100 in Embodiment 1, including a 3D printer 20, a hydraulic press 10, and a positioning seat 30. Among them, the positioning seat 30 can be installed on the 3D printer 20 or the hydraulic press 10; the 3D printer 20 is divided into an upper and a lower layer structure, and the upper and lower layer structures can print simultaneously; a lower support structure and an upper support structure are installed on the positioning seat 30. The upper support structure can slide up and down directly above the lower support structure and can be fixed at a certain position; a convex die printing seat 60 is installed on the upper support structure, and a concave die printing seat 70 is installed on the lower support structure; the 3D printer 20 can simultaneously print the convex die 61 on the convex die printing seat 60 and the concave die 71 on the concave die printing seat 70.

[0071] Specifically, as Figure 4 and Figure 5As shown in the figure, the lower support structure includes a fixed block 40 fixed on the positioning seat 30, and the upper support structure includes a movable block 50 disposed directly above the fixed block 40. One end of the fixed block 40 and one end of the movable block 50 are both fixedly connected with a baffle 52. The center of one side of the baffle 52 is fixedly connected with a square rod 53. The center of one end face of the square rod 53 is fixedly connected with a screw rod 54. A threaded compression sleeve 55 is threadedly installed on the screw rod 54. One side of the threaded compression sleeve 55 is fixedly connected with a handle A56.

[0072] As Figure 3 , Figure 4 , Figure 5 As shown in the figure, both the punch printing seat 60 and the die printing seat 70 are connected with a sleeve block 80. The sleeve block 80 is provided with a square opening 81. The sleeve block 80 can be sleeved on the square rod 53 through the square opening 81. The depth of the square opening 81 is greater than the length of the square rod 53. This length is to ensure that the threaded compression sleeve 55 can press on one side of the sleeve block 80 and tighten it. Among them, it should be noted that when performing 3D printing of the mold (punch 61 and die 71), the surface of the punch printing seat 60 is installed upward (as Figure 5 shown in the figure); when performing mold closing, the surface of the punch printing seat 60 is installed downward (as Figure 3 shown in the figure).

[0073] During implementation, a sliding column 43 is fixedly connected to the fixed block 40, and a sliding hole 51 is provided on the movable block 50. The sliding hole 51 is slidably sleeved on the sliding column 43; it also includes a fixed-length rod 42 with a square cross-section. Square grooves 41 are respectively provided on the top surface of the fixed block 40 and the bottom surface of the movable block 50 in an aligned manner. Both ends of the fixed-length rod 42 can be respectively inserted into the two square grooves 41. Among them, the function of the fixed-length rod 42 is to maintain the distance between the fixed block 40 and the movable block 50, and this distance can exactly ensure that during 3D printing, the upper surface of the punch printing seat 60 is flush with the initial printing plane of the 3D printer 20.

[0074] As Figure 7 shown in the figure, the interior of the 3D printer 20 is separated into an upper area 21 and a lower area 23 by a semi-closed plate 22. A positioning groove 24 is provided at the inner bottom of the lower area 23. The positioning seat 30 can be placed in the positioning groove 24. A handle B31 is fixedly connected to one side of the positioning seat 30. When the positioning seat 30 is placed in the positioning groove 24, the punch printing seat 60 and the die printing seat 70 are respectively located in the upper area 21 and the lower area 23, and the upper surfaces of the punch printing seat 60 and the die printing seat 70 are flush with the initial printing plane of the 3D printer 20.

[0075] In addition, a support seat 25 extending outward is provided on one side of the bottom of the 3D printer 20. The punch of the hydraulic press 10 is provided directly above the support seat 25. This design does not require excessive turnover and is convenient for rapid pressing.

[0076] This embodiment is slightly different from the method in Embodiment 2. That is, after 3D printing is completed, the punch printing seat 60 needs to be removed together with the sleeve block 80, and then the direction is reversed so that the punch 61 faces downward.

[0077] Embodiment 4

[0078] Different from Embodiment 3, as Figure 6 shown, a square magnet 82 is fixedly connected to the sleeve block 80. The punch printing seat 60 and the die printing seat 70 are made of iron or high-carbon steel and can be attracted by the square magnet 82; and square notches (not shown in the figure) that can be sleeved on the square magnet 82 are provided on both the punch printing seat 60 and the die printing seat 70.

[0079] The advantage of this embodiment is that it is not necessary to frequently replace the sleeve block 80. During use, only the punch printing seat 60 and the die printing seat 70 need to be replaced, and there is no need to use the sleeve block 80 as a disposable product, which also reduces waste.

[0080] Embodiment 5

[0081] Different from Embodiment 1, as Figure 8 shown, the threaded holes 101 and the fixing holes 102 in this embodiment are concentrated at one end of the distraction plate 100. When the end of the distraction plate 100 is being shaped, it basically will not cause deformation, that is, the situation where the threaded holes 101 and the fixing holes 102 cannot be used due to shaping will not occur. In Embodiment 1, in very few cases, it may happen that during shaping, the threaded hole 101 undergoes slight deformation, resulting in a relatively stuck situation during use.

[0082] Next, from the perspective of Embodiment 5, as Figure 9 shown, the specific use steps of a periosteal distraction device that fits the patient's skull in this application are introduced: 1. First, incise the skin of the surgical site to expose the incised periosteum. After the distraction screw 400 is locked with the threaded hole 101 on the distraction plate 100, the distraction plate 100 peels off the periosteum (simulated periosteum 701). After being placed at the predetermined position, the distraction plate 100 is fixed between the periosteum and the bone surface, and the threaded pin 200 is driven into the bone mass (simulated skull 700) through the fixing hole 102 of the distraction plate 100. Specifically, as Figure 9 shown in (a) therein; 2. Clamp the drill bit 600 with the electric drill handle and drill a hole. After drilling to the depth of the limit block b602, withdraw the electric drill handle and the drill bit 600, as Figure 9 shown in (b) therein; 3. After the drill handle is clamped to the adapter 500, insert the threaded pin 200 into the square socket 503 of the adapter 500 for fixation. After the drill drives the threaded pin 200 into the bone to a certain depth, retract the drill handle and the adapter 500, as shown in Figure 9 (c) below. At this time, the threaded pin 200 has fixed the distraction plate 100 and the distraction screw 400 to the bone; 4. Fix the dual-purpose knob 300 to the tail of the threaded pin 200 and screw the threaded pin 200 to the limit depth, as shown in Figure 9 (d) below; 5. Then fix the dual-purpose knob 300 to the tail of the distraction screw 400, as shown in Figure 9 (e) below; Continuing to screw in locks the distraction screw 400 and lifts the distraction plate 100 to start periosteal distraction, as shown in Figure 9 (f) below; 6. After distraction for a period of time, remove the periosteal distraction device from between the bone and the periosteum.

[0083] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A periosteal stretching device that fits the skull of a patient, characterized in that: include: A stretching plate, wherein the end of the stretching plate is configured as an arc-shaped tip, and the surface of the stretching plate is an arc surface and can smoothly transition with the arc-shaped tip; The distraction plate is formed by punching with a hydraulic press and a die matching the patient's skull data; The tensioning plate is provided with a threaded hole and a plurality of fixing holes; It also includes a distraction screw, a threaded needle, an adapter and a drill bit; wherein the distraction screw is provided with an inner hole with two ends passing through, and one end of the threaded needle and one end of the drill bit can both pass through the inner hole; The threaded needle is fixedly connected to a limiting block a, and the drill bit is fixedly connected to a limiting block b; One end of the adapter is provided with a square sleeve, one end of the threaded needle is provided with a square portion, the square sleeve can be sleeved on the square portion, and the triangular rod portion at the other end of the adapter can be installed on an electric drill.

2. A periosteal stretching device that fits the skull of a patient according to claim 1, characterized in that: It also includes a dual-purpose knob, one end of which is configured as an I-shaped opening, and the I-shaped opening can be clamped on an end of the threaded needle having a square portion, and the threaded needle can be twisted by the dual-purpose knob; The other end of the dual-purpose knob is arranged as a hexagonal opening, and the hexagonal opening can be sleeved on the hexagonal portion of one end of the distraction screw, and the distraction screw can be twisted by the dual-purpose knob.

3. A method for processing a distraction plate that fits a patient's skull, which is used to process the distraction plate described in any one of claims 1-2, characterized in that: The following steps are involved: S1. Collect the skull information data of the patient's brain through a CT machine; S2. Enter the collected skull information data into the 3D printer, and then build a three-dimensional model of the corresponding mold based on the skull information data of the patient and the requirements of periosteal stretching; S3, using a 3D printer to print out the concave mold and the convex mold respectively; S4, placing the unshaped stretching plate into the concave die, and after closing the die, punching it through a hydraulic press; S5. After the stamping is completed, it is taken out, and the shaping of the tension plate is completed.

4. A method for processing a distraction plate that fits a patient's skull according to claim 3, characterized in that: in, The printing material used by the 3D printer is stainless steel.

5. A processing device for a distraction plate that fits a patient's skull, used for processing the distraction plate described in any one of claims 1-2, characterized in that: include: A 3D printer, a hydraulic press and a positioning seat, wherein the positioning seat can be mounted on the 3D printer or the hydraulic press; The 3D printer is divided into an upper and lower layer structure, and the upper and lower layers can print at the same time; The positioning seat is provided with a lower supporting structure and an upper supporting structure, wherein the upper supporting structure can slide up and down directly above the lower supporting structure and can be fixed at a certain position; the upper supporting structure is provided with a convex mold printing seat, and the lower supporting structure is provided with a concave mold printing seat; The 3D printer can simultaneously print a convex mold on a convex mold printing seat and print a concave mold on a concave mold printing seat.

6. A processing device for a distraction plate that fits the patient's skull according to claim 5, characterized in that: The lower support structure includes a fixed block fixed on the positioning seat, and the upper support structure includes a movable block arranged directly above the fixed block, one end of the fixed block and one end of the movable block are fixedly connected to a baffle, a square rod is fixedly connected to the center of one side of the baffle, a screw is fixedly connected to the center of one end face of the square rod, a threaded sleeve is threadedly installed on the screw, and a handle A is fixedly connected to one side of the threaded sleeve; The male die printing seat and the female die printing seat are both connected with a sleeve block, and a square opening is opened on the sleeve block. The sleeve block can be sleeved on the square rod through the square opening, and the depth of the square opening is greater than the length of the square rod.

7. A processing device for a distraction plate that fits the patient's skull according to claim 6, characterized in that: The fixed block is fixedly connected with a sliding column, the movable block is provided with a sliding hole, and the sliding hole is slidably sleeved on the sliding column; It also includes a fixed-length rod with a square cross-section. The top surface of the fixed block and the bottom surface of the movable block are respectively provided with aligned square grooves, and the two ends of the fixed-length rod can be inserted into the two square grooves respectively.

8. A processing device for a distraction plate that fits the patient's skull according to claim 7, characterized in that: The interior of the 3D printer is divided into an upper area and a lower area by a semi-enclosed plate. A positioning groove is provided at the inner bottom of the lower area. The positioning seat can be placed in the positioning groove. A handle B is fixedly connected to one side of the positioning seat. When the positioning seat is placed in the positioning groove, the male mold printing seat and the female mold printing seat are respectively in the upper area and the lower area, and the upper surfaces of the male mold printing seat and the female mold printing seat are flush with the initial printing plane of the 3D printer.

9. A processing device for a distraction plate that fits the patient's skull according to claim 8, characterized in that: A support seat extending outward is arranged on one side of the bottom of the 3D printer, and the punch of the hydraulic press is arranged directly above the support seat.

10. A processing device for a distraction plate that fits the patient's skull according to claim 9, characterized in that: A square magnet is fixedly connected to the sleeve block. The male mold printing seat and the female mold printing seat are made of iron or high-carbon steel and can be attracted by the square magnet. Both the male mold printing seat and the female mold printing seat are provided with square slots that can be sleeved on the square magnet.

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