A demonstration device for bone screw installation in orthopedic surgery teaching

Abstract

This invention belongs to the field of teaching demonstration technology, specifically disclosing a bone screw installation demonstration device for orthopedic surgery teaching, including a placement platform and a bone screw body. The top of the placement platform is provided with a skeletal structure, and the top of the placement platform is provided with a detachable mounting block. A camera component is provided on one side of the placement platform. The mounting block is a transparent material component, and the bottom of the bone screw body has a connecting groove. By setting up the skeletal structure, the composite mechanical environment of cortical bone and cancellous bone during bone screw implantation can be simulated. The inner diameter of the resistance ring is smaller than that of the bone screw to simulate the breakthrough feeling of high-resistance cortical bone, and the inner diameter of the connecting ring is larger than that of the bone screw to simulate the frictional feeling of cancellous bone. The process of the bone screw pushing the sealing block to compress the first spring provides a realistic dynamic resistance that changes with the implantation depth. This multi-layered tactile simulation overcomes the defects of traditional models, such as distorted tactile sensation and single feedback.

Description

Technical Field

[0001] This invention belongs to the field of teaching demonstration technology, and specifically discloses a bone screw installation demonstration device for orthopedic surgery teaching. Background Technology

[0002] In orthopedic surgical education, bone screw implantation technique is one of the core skills that surgeons must master. Traditional teaching methods mainly rely on theoretical explanations, watching surgical videos, practicing on ex vivo bone models, and clinical internships.

[0003] However, ex vivo skeletal models are limited in availability, difficult to preserve, and cannot be reused. Furthermore, they are difficult to simulate the mechanical feedback and internal structural changes of real bones, making it impossible for trainees to obtain realistic and repeatable tactile training.

[0004] Therefore, those skilled in the art have proposed a bone screw installation demonstration device for orthopedic surgical teaching to solve the problems mentioned above. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a bone screw installation demonstration device for orthopedic surgery teaching, so as to solve the problem of poor teaching demonstration effect of the prior art.

[0006] To achieve the above objectives, the present invention provides a bone screw installation demonstration device for orthopedic surgery teaching, comprising a placement platform and a bone screw body. The top of the placement platform is provided with a bone structure, and the top of the placement platform is provided with a detachable mounting block. A camera component is provided on one side of the placement platform. The mounting block is made of transparent material, and a connecting groove is provided at the bottom of the bone screw body.

[0007] The skeletal structure includes a fixed half-bone and a transparent half-bone. The fixed half-bone is embedded in the top of the placement platform, and the transparent half-bone is embedded in the top of the mounting block and matches the fixed half-bone. Mounting grooves are provided on opposite sides of the transparent half-bone and the fixed half-bone. A connecting ring is fixedly connected in the mounting groove on the fixed half-bone. Both ends of the connecting ring are fixedly connected to resistance rings. Both the connecting ring and the resistance ring are made of transparent material. A sealing block is provided inside the resistance ring. The top of the sealing block has a groove that matches the bottom of the bone screw body, and the inner wall of the groove is fixedly connected to an insert plate that matches the connecting groove.

[0008] In the above technical solution, preferably, both the resistance ring and the connecting ring are transparent rubber components, the inner diameter of the resistance ring is smaller than the inner diameter of the connecting ring, and the inner diameter of the resistance ring is larger than the diameter of the bone screw body.

[0009] In the above technical solution, preferably, the mounting block has a slot coaxially arranged with the connecting ring inside, a limit ring is fixedly connected to the inner wall of the slot, and a push plate located below the limit ring is slidably connected to the inner wall of the slot.

[0010] In the above technical solution, preferably, the bottom of the sealing block is rotatably connected to a connecting rod, the lower end of the connecting rod passes through a limiting ring and is fixedly connected to a sliding plate, the bottom of the sliding plate is fixedly connected to the top of the push plate, and a first spring is fixedly connected between the bottom of the push plate and the inner bottom wall of the slot.

[0011] In the above technical solution, preferably, the shooting component includes a guide rod fixedly connected to one side of the placement platform, a sliding block slidably connected to the surface of the guide rod, a mounting frame fixedly connected to the top of the sliding block, a connecting frame fixedly connected to the surface of the mounting frame, a fixing ring fixedly connected to the end of the mounting frame away from the sliding block and the end of the connecting frame away from the mounting frame, a fixing block provided on the inner side of the mounting frame and the connecting frame, a rotating shaft fixedly connected to both ends of the fixing block, and the other end of the rotating shaft rotatably connected to the inner wall of the adjacent fixing ring.

[0012] In the above technical solution, preferably, a camera is provided on the surface of the fixing block, a fill light is provided on the surface of the camera, a groove is provided on the surface of the rotating shaft, and a uniformly distributed protrusion is fixedly connected to the inner side of the fixing ring and in contact with the inner wall of the groove, the protrusion being a rubber material component.

[0013] In the above technical solution, preferably, both sides of the mounting block are fixedly connected to connecting plates, and both sides of the placement platform are fixedly connected to fixing plates that match the connecting plates. The surface of the connecting plates is provided with connecting holes corresponding to the insertion blocks.

[0014] In the above technical solution, preferably, the top of the insert block is provided with a locking block, the cross-sectional shape of the locking block is a right trapezoid, the lower end of the locking block passes through the insert block and is fixedly connected to a second spring, and the other end of the second spring is fixedly connected to the inner wall of the insert block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting the skeletal structure, it is possible to simulate the composite mechanical environment of cortical bone and cancellous bone during bone screw implantation. The inner diameter of the resistance ring is smaller than that of the bone screw to simulate the breakthrough feeling of cortical bone with high resistance, and the inner diameter of the connecting ring is larger than that of the bone screw to simulate the friction feeling of cancellous bone. The process of the bone screw pushing the sealing block to compress the first spring provides a realistic dynamic resistance that changes with the implantation depth. This multi-level tactile simulation overcomes the defects of traditional models in terms of distorted tactile feel and single feedback.

[0017] 2. By combining the internal viewing window, composed of a transparent semi-bone, connecting ring, and drag-increasing ring, with a multi-angle adjustable shooting component equipped with supplementary lighting, a unique dual visualization solution is formed. The internal structure allows direct observation of the bone screw path, while the external camera can capture and magnify operational details, solving the problems of poor visibility and limited teaching perspective in background technology.

[0018] 3. The detachable mounting block allows for direct observation of the internal structure and implantation effect after class. After the bone screw is removed, the first spring can automatically push the sealing block to accurately reset, ensuring that the device can be reused indefinitely. This avoids the problem of traditional models having a single function and being unable to be trained repeatedly, and achieves a seamless connection between teaching demonstration, tactile training and effect verification. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0021] Figure 3 This is a schematic diagram showing the separation of the placement platform and the mounting block of the present invention;

[0022] Figure 4 This is a schematic diagram showing the distribution of the connecting ring, resistance-increasing ring, and sealing block of the present invention;

[0023] Figure 5 This is a schematic diagram showing the distribution of the limiting ring, push plate, and first spring of the present invention;

[0024] Figure 6 This is a schematic diagram showing the distribution of the card block, the insertion block, and the second spring of the present invention;

[0025] Figure 7 This is a schematic diagram of the imaging component of the present invention;

[0026] Figure 8 for Figure 7 A magnified view of B in the middle.

[0027] In the diagram: 1. Placement platform; 2. Skeletal structure; 201. Fixed hemibone; 202. Transparent hemibone; 203. Sealing block; 204. Connecting ring; 205. Connecting rod; 206. Slide plate; 207. Insert plate; 208. Resistance ring; 209. Push plate; 210. First spring; 211. Limiting ring; 212. Slot; 3. Mounting block; 301. Connecting plate; 302. Fixing plate; 303. Inserting block; 304. Second spring; 305. Locking block; 4. Bone nail body; 401. Connecting groove; 5. Imaging assembly; 501. Connecting frame; 502. Sliding block; 503. Mounting frame; 504. Fixing block; 505. Camera; 506. Rotating shaft; 507. Fill light; 508. Guide rod; 509. Slide groove; 510. Protrusion; 511. Fixing ring. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0030] like Figures 1-8 The above-displayed bone screw installation demonstration device for orthopedic surgery teaching includes a placement platform 1 and a bone screw body 4. A bone structure 2 is provided on the top of the placement platform 1, a detachable mounting block 3 is provided on the top of the placement platform 1, a camera component 5 is provided on one side of the placement platform 1, the mounting block 3 is a transparent component, and a connecting groove 401 is provided at the bottom of the bone screw body 4.

[0031] The skeletal structure 2 includes a fixed half-bone 201 and a transparent half-bone 202. The fixed half-bone 201 is embedded in the top of the placement platform 1, and the transparent half-bone 202 is embedded in the top of the mounting block 3 and matches the fixed half-bone 201. Mounting grooves are provided on opposite sides of the transparent half-bone 202 and the fixed half-bone 201. A connecting ring 204 is fixedly connected in the mounting groove on the fixed half-bone 201. Both ends of the connecting ring 204 are fixedly connected to resistance rings 208. Both the connecting ring 204 and the resistance ring 208 are transparent components. A sealing block 203 is provided inside the upper resistance ring 208. A groove matching the bottom of the bone nail body 4 is provided on the top of the sealing block 203, and an insert plate 207 matching the connecting groove 401 is fixedly connected to the inner wall of the groove.

[0032] After the placement platform 1 and the mounting block 3 are connected, the fixed half-bone 201 and the transparent half-bone 202 are attached to form a skeletal model, which makes it easy for the bone nail body 4 to be inserted into the inside of the mounting slot. The opening position of the mounting slot can be adjusted according to the teaching needs. The transparent half-bone 202 is set to facilitate the viewing of the process of the bone nail body 4 being inserted into the mounting slot. The connecting ring 204 and the resistance ring 208 are transparent components and will not affect the normal demonstration effect.

[0033] like Figures 1-8 As shown, both the resistance ring 208 and the connecting ring 204 are transparent rubber components. The inner diameter of the resistance ring 208 is smaller than the inner diameter of the connecting ring 204, and the inner diameter of the resistance ring 208 is larger than the diameter of the bone nail body 4.

[0034] The mounting block 3 has a slot 212 coaxially arranged with the connecting ring 204 inside. The inner wall of the slot 212 is fixedly connected to a limit ring 211, and the inner wall of the slot 212 is slidably connected to a push plate 209 located below the limit ring 211.

[0035] The bottom of the blocking block 203 is rotatably connected to a connecting rod 205. The lower end of the connecting rod 205 passes through the limiting ring 211 and is fixedly connected to a sliding plate 206. The bottom of the sliding plate 206 is fixedly connected to the top of the push plate 209. The bottom of the push plate 209 is fixedly connected to the inner bottom wall of the slot 212 with a first spring 210.

[0036] The resistance ring 208 is designed to simulate the cortical bone. Since the inner diameter of the resistance ring 208 is smaller than the diameter of the bone screw body 4, there will be greater resistance during the insertion of the bone screw body 4. This can simulate the effect of generating greater resistance when passing through the cortical bone, making it convenient for students to use the device for hands-on practice after the demonstration. The inner diameter of the connecting ring 204 is larger than the inner diameter of the resistance ring 208, which can simulate the feel of cancellous bone.

[0037] Furthermore, as the bone nail body 4 is inserted, the push plate 209 can be pushed by the downward-moving sealing block 203, connecting rod 205 and sliding plate 206 to compress the first spring 210. The sealing block 203 ensures that the end of the bone nail body 4 is always blocked by the sealing block 203 during the insertion process, avoiding the distortion of feel caused by directly opening an empty slot. After the bone nail body 4 is removed, the sealing block 203 can be reset under the action of the first spring 210.

[0038] like Figures 1-8As shown, the shooting assembly 5 includes a guide rod 508 fixedly connected to one side of the placement platform 1. A sliding block 502 is slidably connected to the surface of the guide rod 508. A mounting bracket 503 is fixedly connected to the top of the sliding block 502. A connecting bracket 501 is fixedly connected to the surface of the mounting bracket 503. A fixing ring 511 is fixedly connected to the end of the mounting bracket 503 away from the sliding block 502 and the end of the connecting bracket 501 away from the mounting bracket 503. A fixing block 504 is provided on the inner side of the mounting bracket 503 and the connecting bracket 501. A rotating shaft 506 is fixedly connected to both ends of the fixing block 504. The other end of the rotating shaft 506 is rotatably connected to the inner wall of the adjacent fixing ring 511.

[0039] A camera 505 is provided on the surface of the fixing block 504, and a fill light 507 is provided on the surface of the camera 505. A groove 509 is provided on the surface of the rotating shaft 506. A uniformly distributed protrusion 510 is fixedly connected to the inner side of the fixing ring 511 and contacts the inner wall of the groove 509. The protrusion 510 is a rubber material component.

[0040] The position of the camera 505 can be changed by rotating the fixing block 504, which facilitates the capture of images of the bone nail body 4 under different conditions for better demonstration. At the same time, a corresponding display should be provided to receive the real-time images captured by the rotating camera 505 for teaching demonstration. The supplementary light 507 is set to increase the lighting and improve the shooting effect. The protrusion 510 and the slide 509 are set to ensure that the fixing block 504 will not easily shake after being rotated and adjusted by the rotating shaft 506. The guide rod 508 and the sliding block 502 are set to adjust the position of the camera 505 to increase the shooting range.

[0041] like Figures 1-8 As shown, both sides of the mounting block 3 are fixedly connected to a connecting plate 301, and both sides of the placement platform 1 are fixedly connected to a fixing plate 302 that matches the connecting plate 301. The surface of the connecting plate 301 is provided with a connecting hole corresponding to the insert block 303.

[0042] The top of the insert block 303 is provided with a locking block 305. The cross-sectional shape of the locking block 305 is a right trapezoid. The lower end of the locking block 305 passes through the insert block 303 and is fixedly connected to a second spring 304. The other end of the second spring 304 is fixedly connected to the inner wall of the insert block 303.

[0043] Mounting block 3 can be installed on the placement platform 1 through the connecting hole on the connecting plate 301 and the insertion block 303. During this process, the inner wall of the connecting hole can squeeze the inclined surface of the locking block 305, causing it to retract into the interior of the insertion block 303. During this process, the second spring 304 can be compressed until it is installed in place. Under the action of the second spring 304, the locking block 305 can be reset, thereby limiting the position of mounting block 3.

[0044] During the teaching process, removing the installation block 3 allows the transparent half-bone 202 to be separated from the fixed half-bone 201, thus making it easier to demonstrate the effect of the bone screw body 4 after insertion.

[0045] Working principle: The mounting block 3 can be installed on the placement platform 1 through the connecting hole on the connecting plate 301 and the insertion block 303. The bone screw body 4 is inserted according to teaching needs. During this process, the resistance ring 208 simulates the cortical bone. Because the inner diameter of the resistance ring 208 is smaller than the diameter of the bone screw body 4, there will be greater resistance during the insertion of the bone screw body 4, simulating the effect of greater resistance when passing through the cortical bone. This facilitates hands-on practice for students after the demonstration. The inner diameter of the connecting ring 204 is larger than the inner diameter of the resistance ring 208, simulating the feel of cancellous bone. Furthermore, as the bone screw body 4 is inserted, the lowering sealing block 203 gradually moves... The connecting rod 205 and the sliding plate 206 push the push plate 209 to compress the first spring 210. The blocking block 203 ensures that the end of the bone nail body 4 is always blocked by the blocking block 203 during the insertion process, avoiding the distortion of the feel caused by directly opening an empty slot. The operation process can be captured by the camera 505. The position of the camera 505 can be changed by rotating the fixing block 504 to facilitate the capture of the insertion image of the bone nail body 4 under different conditions, so as to better demonstrate. At the same time, a corresponding display should be provided to receive the real-time image captured by the rotating camera 505 for teaching demonstration. The supplementary light 507 is set to increase the lighting and improve the shooting effect.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A demonstration device for bone screw installation in orthopedic surgery teaching, comprising a placement platform (1) and a bone screw body (4), characterized in that, The top of the placement platform (1) is provided with a bone structure (2), the top of the placement platform (1) is provided with a detachable mounting block (3), the side of the placement platform (1) is provided with a shooting component (5), the mounting block (3) is a transparent material component, and the bottom of the bone nail body (4) is provided with a connecting groove (401). The bone structure (2) includes a fixed half-bone (201) and a transparent half-bone (202). The fixed half-bone (201) is embedded in the top of the placement platform (1), and the transparent half-bone (202) is embedded in the top of the mounting block (3) and matches the fixed half-bone (201). The transparent half-bone (202) and the fixed half-bone (201) are provided with mounting grooves on opposite sides. A connecting ring (204) is fixedly connected in the mounting groove on the fixed half-bone (201). Both ends of the connecting ring (204) are fixedly connected with resistance rings (208). The connecting ring (204) and the resistance ring (208) are both transparent components. A sealing block (203) is provided inside the resistance ring (208). The top of the sealing block (203) is provided with a groove that matches the bottom of the bone nail body (4). The inner wall of the groove is fixedly connected with a plate (207) that matches the connecting groove (401). The resistance ring (208) and the connecting ring (204) are both transparent rubber components. The inner diameter of the resistance ring (208) is smaller than the inner diameter of the connecting ring (204), and the inner diameter of the resistance ring (208) is larger than the diameter of the bone nail body (4). The mounting block (3) has a slot (212) coaxially arranged with the connecting ring (204) inside. The inner wall of the slot (212) is fixedly connected to a limiting ring (211), and the inner wall of the slot (212) is slidably connected to a push plate (209) located below the limiting ring (211). The bottom of the sealing block (203) is rotatably connected to a connecting rod (205). The lower end of the connecting rod (205) passes through a limiting ring (211) and is fixedly connected to a sliding plate (206). The bottom of the sliding plate (206) is fixedly connected to the top of the push plate (209). The bottom of the push plate (209) is fixedly connected to the inner bottom wall of the slot (212) with a first spring (210).

2. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 1, characterized in that, The shooting assembly (5) includes a guide rod (508) fixedly connected to one side of the placement platform (1). A sliding block (502) is slidably connected to the surface of the guide rod (508). A mounting bracket (503) is fixedly connected to the top of the sliding block (502). A connecting bracket (501) is fixedly connected to the surface of the mounting bracket (503). A fixing ring (511) is fixedly connected to one end of the mounting bracket (503) away from the sliding block (502) and one end of the connecting bracket (501) away from the mounting bracket (503). A fixing block (504) is provided on the inner side of the mounting bracket (503) and the connecting bracket (501). A rotating shaft (506) is fixedly connected to both ends of the fixing block (504). The other end of the rotating shaft (506) is rotatably connected to the inner wall of the adjacent fixing ring (511).

3. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 2, characterized in that, A camera (505) is provided on the surface of the fixed block (504), and a fill light (507) is provided on the surface of the camera (505). A groove (509) is provided on the surface of the rotating shaft (506). A uniformly distributed protrusion (510) is fixedly connected to the inner side of the fixed ring (511) and contacts the inner wall of the groove (509). The protrusion (510) is a rubber material component.

4. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 3, characterized in that, Both sides of the mounting block (3) are fixedly connected to a connecting plate (301), and both sides of the placement platform (1) are fixedly connected to a fixing plate (302) that matches the connecting plate (301). The surface of the connecting plate (301) is provided with a connecting hole corresponding to the insert block (303).

5. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 4, characterized in that, The top of the insert (303) is provided with a locking block (305). The cross-sectional shape of the locking block (305) is a right trapezoid. The lower end of the locking block (305) passes through the insert (303) and is fixedly connected to a second spring (304). The other end of the second spring (304) is fixedly connected to the inner wall of the insert (303).

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