Bone nail installation demonstration device for orthopedic surgery teaching

Abstract

The invention belongs to the technical field of teaching demonstration, and particularly discloses a bone nail installation demonstration device for orthopedic surgery teaching, which comprises a placement table and a bone nail body, a bone structure is arranged at the top of the placement table, a detachable installation block is arranged at the top of the placement table, and a shooting assembly is arranged on one side of the placement table. The mounting block is a transparent material component, and a connecting groove is formed in the bottom of the bone nail body; by arranging the bone structure, the composite mechanical environment of cortical bone-cancellous bone in the bone nail implanting process can be simulated, the inner diameter of the resistance increasing ring is smaller than that of the bone nail to simulate high-resistance cortical bone breakthrough feeling, the inner diameter of the connecting ring is larger than that of the bone nail to simulate the friction resistance feeling of the cancellous bone, and the bone nail pushes the plugging block to compress the first spring; the real dynamic resistance changing along with the implantation depth is provided, and the multi-level hand feeling simulation overcomes the defects that a traditional model is distorted in hand feeling and single in feedback.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of teaching demonstration, and particularly discloses a bone screw installation demonstration device for orthopedic surgery teaching. BACKGROUND

[0002] In orthopedic surgery teaching, bone screw implantation technology is one of the core skills that doctors must master. Traditional teaching methods mainly rely on theoretical explanation, watching surgical videos, operating practice on ex vivo bone models, and clinical practice;

[0003] However, ex vivo bone models are limited in source, difficult to preserve, cannot be reused, and are difficult to simulate the mechanical feedback and internal structure changes of real bones, so that trainees cannot obtain real and repeatable tactile training

[0004] Therefore, the technical personnel in the field propose a bone screw installation demonstration device for orthopedic surgery teaching to solve the above-mentioned problems. SUMMARY

[0005] Therefore, the technical personnel in the field propose a bone screw installation demonstration device for orthopedic surgery teaching to solve the above-mentioned problems.

[0006] To achieve the above purpose, the application provides a bone screw installation demonstration device for orthopedic surgery teaching, which comprises a placement table and a bone screw body, the top of the placement table is provided with a bone structure, the top of the placement table is provided with a detachable mounting block, one side of the placement table is provided with a shooting assembly, the mounting block is a transparent material member, and the bottom of the bone screw body is provided with a connecting groove;

[0007] The bone structure comprises a fixed half bone and a transparent half bone, the fixed half bone is embedded and mounted on the top of the placement table, the transparent half bone is embedded and mounted on the top of the mounting block and matched with the fixed half bone, the opposite sides of the transparent half bone and the fixed half bone are provided with mounting grooves, a connecting ring is fixedly connected in the mounting groove of the fixed half bone, both ends of the connecting ring are fixedly connected with resistance rings, the connecting ring and the resistance ring are both transparent material members, the inside of the resistance ring is provided with a blocking block, the top of the blocking block is provided with a groove matched with the bottom of the bone screw body, and the inner wall of the groove is fixedly connected with a plug plate matched with the connecting groove.

[0008] In the above technical solution, preferably, the resistance ring and the connecting ring are both transparent rubber material members, 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 greater than the diameter of the bone screw body.

[0009] In the above technical scheme, preferably, an insertion slot coaxial with the connecting ring is arranged in the interior of the mounting block, a limiting ring is fixedly connected to the inner wall of the insertion slot, and a push plate is slidably connected to the inner wall of the insertion slot below the limiting ring.

[0010] In the above technical scheme, preferably, a connecting rod is rotatably connected to the bottom of the blocking block, the lower end of the connecting rod penetrates through the limiting ring and is fixedly connected with a sliding plate, the bottom of the sliding plate is fixedly connected with 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 insertion slot.

[0011] In the above technical scheme, preferably, the shooting assembly comprises a guide rod fixedly connected to one side of the placing table, a sliding block is slidably connected to the surface of the guide rod, a mounting frame is fixedly connected to the top of the sliding block, a connecting frame is fixedly connected to the surface of the mounting frame, a fixing ring is 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 is arranged on the inner side of the mounting frame and the connecting frame, a rotating shaft is fixedly connected to the two ends of the fixing block, and the other end of the rotating shaft is rotatably connected with the inner wall of the adjacent fixing ring.

[0012] In the above technical scheme, preferably, a camera is arranged on the surface of the fixing block, a light supplementing lamp is arranged on the surface of the camera, a sliding groove is arranged on the surface of the rotating shaft, a protrusion is fixedly connected to the inner side of the fixing ring and in contact with the inner wall of the sliding groove, and the protrusion is a rubber material member.

[0013] In the above technical scheme, preferably, a connecting plate is fixedly connected to the two sides of the mounting block, a fixing plate matching the connecting plate is fixedly connected to the two sides of the placing table, and a connecting hole corresponding to the insertion block is arranged on the surface of the connecting plate.

[0014] In the above technical scheme, preferably, a clamping block is arranged on the top of the insertion block, the cross section of the clamping block is in the shape of a right trapezoid, a second spring is fixedly connected to the lower end of the clamping block and penetrates through the insertion block, and the other end of the second spring is fixedly connected with the inner wall of the insertion block.

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

[0016] 1. By arranging the bone structure, the complex mechanical environment of the cortical bone-cancellous bone in the process of bone nail implantation can be simulated, the inner diameter of the resistance ring is smaller than that of the bone nail to simulate the breakthrough feeling of the cortical bone with high resistance, the inner diameter of the connecting ring is larger than that of the bone nail to simulate the friction resistance feeling of the cancellous bone, and the process of the bone nail pushing the blocking block to compress the first spring provides a real dynamic resistance changing with the implantation depth. This multi-level feeling simulation overcomes the defects of distorted feeling and single feedback of the traditional model.

[0017] 2. The internal visible window composed of transparent half bone, connecting ring and resistance ring is combined with the shooting assembly with multi-angle adjustment and light supplement, forming a unique double visualization scheme. The internal structure allows direct observation of the bone nail path, while the external camera can capture and enlarge the operation details, solving the problems of poor visibility and limited teaching perspective in the background technology.

[0018] 3. The detachable mounting block facilitates direct observation of the internal structure and implantation effect after class, and the first spring can automatically push the blocking block to accurately reset after the bone nail is removed, ensuring that the device can be reused infinitely and avoiding the problem of single function and inability to cycle training of traditional models, realizing seamless connection of teaching demonstration, hand feeling training and effect verification. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural diagram of the present application;

[0020] Figure 2 is a structural diagram of the present application; Figure 1 is an enlarged view of A;

[0021] Figure 3 is a separation diagram of the placement table and the mounting block of the present application;

[0022] Figure 4 is a distribution diagram of the connecting ring, the resistance ring and the blocking block of the present application;

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

[0024] Figure 6 is a distribution diagram of the clamping block, the insertion block and the second spring of the present application;

[0025] Figure 7 is a structural diagram of the shooting assembly of the present application;

[0026] Figure 8 is a structural diagram of the shooting assembly of the present application; Figure 7 is an enlarged view of B;

[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 connection between the placing table 1 and the mounting block 3 is completed, the fixed half bone 201 and the transparent half bone 202 are attached to form a bone model, so that the bone nail body 4 can be inserted into the inside of the mounting groove, and the opening position of the mounting groove can be adjusted according to the teaching needs, the transparent half bone 202 is provided to facilitate the observation of the process of inserting the bone nail body 4 into the inside of the mounting groove, and the connecting ring 204 and the resistance increasing ring 208 are members made of transparent material and will not affect the normal demonstration effect.

[0033] As shown in Figures 1-8 , the resistance increasing ring 208 and the connecting ring 204 are both members made of transparent rubber material, the inner diameter of the resistance increasing ring 208 is smaller than the inner diameter of the connecting ring 204, and the inner diameter of the resistance increasing ring 208 is greater than the diameter of the bone nail body 4.

[0034] The inside of the mounting block 3 is provided with a plug groove 212 coaxially arranged with the connecting ring 204, the inner wall of the plug groove 212 is fixedly connected with a limiting ring 211, and the inner wall of the plug groove 212 is slidingly connected with a push plate 209 located below the limiting ring 211.

[0035] The bottom of the plugging block 203 is rotatably connected with a connecting rod 205, the lower end of the connecting rod 205 penetrates through the limiting ring 211 and is fixedly connected with a sliding plate 206, the bottom of the sliding plate 206 is fixedly connected with the top of the push plate 209, and the bottom of the push plate 209 and the inner bottom wall of the plug groove 212 are fixedly connected with a first spring 210.

[0036] The resistance increasing ring 208 can simulate the bone cortex, because the inner diameter of the resistance increasing ring 208 is smaller than the diameter of the bone nail body 4, so that there is a greater resistance during the insertion of the bone nail body 4, which can simulate the effect of a greater resistance when passing through the bone cortex, and facilitate the hand feeling exercise of the students when practicing with the device after the demonstration is completed, and the inner diameter of the connecting ring 204 is greater than the inner diameter of the resistance increasing ring 208, which can simulate the hand feeling of the cancellous bone;

[0037] And with the insertion of the bone nail body 4, the push plate 209 can be gradually pushed by the downward movement of the plugging block 203, the connecting rod 205 and the sliding plate 206 to compress the first spring 210, and the plugging block 203 can ensure that the end of the bone nail body 4 is always blocked by the plugging block 203 during the insertion process, avoiding the distortion of the hand feeling caused by directly opening the air slot, and the plugging block 203 can be reset under the action of the first spring 210 after the bone nail body 4 is taken out.

[0038] As shown in Figures 1-8As shown, the shooting assembly 5 includes a guide rod 508 fixedly connected to one side of the placement table 1, the surface of the guide rod 508 is slidingly connected with a sliding block 502, the top of the sliding block 502 is fixedly connected with a mounting frame 503, the surface of the mounting frame 503 is fixedly connected with a connecting frame 501, one end of the mounting frame 503 away from the sliding block 502 and one end of the connecting frame 501 away from the mounting frame 503 are both fixedly connected with a fixed ring 511, the inner sides of the mounting frame 503 and the connecting frame 501 are both provided with a fixed block 504, both ends of the fixed block 504 are both fixedly connected with a rotating shaft 506, the other end of the rotating shaft 506 is rotatably connected with the inner wall of the adjacent fixed ring 511.

[0039] The surface of the fixed block 504 is provided with a camera 505, the surface of the camera 505 is provided with a light supplementing lamp 507, the surface of the rotating shaft 506 is provided with a sliding groove 509, the inner side of the fixed ring 511 is fixedly connected with a protrusion 510 which is uniformly distributed and in contact with the inner wall of the sliding groove 509, and the protrusion 510 is a rubber material component.

[0040] The position of the camera 505 can be changed by rotating the fixed block 504, which is convenient for shooting the insertion image of the bone screw body 4 in different situations, so as to better demonstrate, and at the same time, a corresponding display should be matched for receiving the real-time picture shot by the rotating ring camera 505, which is convenient for teaching demonstration, the setting of the light supplementing lamp 507 is used to increase the illumination and improve the shooting effect, the setting of the protrusion 510 and the sliding groove 509 can ensure that the fixed block 504 will not shake easily after being adjusted by the rotating shaft 506, and the setting of the guide rod 508 and the sliding block 502 is used to adjust the position of the camera 505 to improve the shooting range.

[0041] As shown in Figures 1-8 The two sides of the mounting block 3 are both fixedly connected with a connecting plate 301, the two sides of the placement table 1 are both fixedly connected with a fixed plate 302 matched with the connecting plate 301, and the surface of the connecting plate 301 is provided with a connecting hole corresponding to the plug block 303.

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

[0043] The mounting block 3 can be installed on the placement table 1 through the connecting hole on the connecting plate 301 and the plug block 303, in this process, the inner wall of the connecting hole can extrude the inclined surface of the clamping block 305, so that it shrinks to the inside of the plug block 303, in this process, the second spring 304 can be compressed, and after being installed in place, the clamping block 305 can be reset under the action of the second spring 304, so as to realize the limiting of the position of the mounting block 3;

[0044] In the teaching process, the transparent half bone 202 can be separated from the fixed half bone 201 by removing the mounting block 3, and then the effect of the bone nail body 4 after insertion can be better and more convenient to display.

[0045] Working principle: The mounting block 3 can be installed on the placement table 1 through the connecting hole on the connecting plate 301 and the plug block 303, and the bone nail body 4 is inserted according to the teaching needs. In this process, the setting of the resistance increasing ring 208 can simulate the bone cortex. Since the inner diameter of the resistance increasing ring 208 is smaller than the diameter of the bone nail body 4, there will be a greater resistance during the insertion of the bone nail body 4, which can simulate the effect of a greater resistance when passing through the bone cortex, and facilitate the hand feeling exercise of the students when they use the device for practical operation after the demonstration is completed. The inner diameter of the connecting ring 204 is greater than the inner diameter of the resistance increasing ring 208, which can simulate the hand feeling of the bone cancellous tissue, and with the insertion of the bone nail body 4, the push plate 209 can be gradually pushed and compressed by the first spring 210 through the downward movement of the sealing block 203, the connecting rod 205 and the sliding plate 206. The setting of the sealing block 203 can ensure 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 the hand feeling caused by directly opening the air slot. The picture during the operation process can be photographed by the camera 505, and the position of the camera 505 can be changed by rotating the fixed block 504, which is convenient for photographing the insertion image of the bone nail body 4 in different situations, so as to better demonstrate. At the same time, a corresponding display should be matched to receive the real-time picture taken by the rotating ring camera 505, which is convenient for teaching demonstration, and the setting of the fill light 507 is used to increase the illumination and improve the shooting effect.

[0046] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

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). Both the connecting ring (204) and the resistance ring (208) are 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), and the inner wall of the groove is fixedly connected with a plate (207) that matches the connecting groove (401).

2. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 1, characterized in that, 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 that of the connecting ring (204), and the inner diameter of the resistance ring (208) is larger than that of the bone nail body (4).

3. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 2, characterized in that, 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).

4. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 3, characterized in that, 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).

5. 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).

6. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 5, 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.

7. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 1, 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).

8. The bone screw installation demonstration device for orthopedic surgical teaching according to claim 7, 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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