An endoscope-assisted rib cartilage harvesting device for auricular reconstruction surgery

Abstract

The application provides an endoscope-assisted rib cartilage cutting device for auricle reconstruction surgery, and belongs to the technical field of medical instruments. The device comprises a fixing cylinder sleeved on the outer wall of an endoscope, limit columns symmetrically and fixedly connected to the outer wall near the top of the fixing cylinder, sliding plates symmetrically and fixedly connected to the outer wall near the bottom of the fixing cylinder, L-shaped sliding grooves formed in the outer wall of the sliding plates, a strutting assembly slidingly installed on the outer wall of the sliding plates, and a fixing assembly fixedly installed on the outer wall of the fixing cylinder. The fixing assembly further comprises a sliding circular plate slidingly sleeved on the outer wall of the fixing cylinder, and a third rotating cylinder rotatably connected to the sliding circular plate. The third rotating cylinder is connected with a clamping mechanism for clamping rib cartilage. In the above scheme, the endoscope-assisted rib cartilage cutting device for auricle reconstruction surgery can adjust the strutting range and expose the operation field as required through the setting of the strutting assembly and the fixing assembly, can guarantee the regularity of the cutting surface through the fixing of the cartilage, and can assist postoperative recovery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery. Background Technology

[0002] Auricular reconstruction is the mainstream surgical procedure for correcting congenital microtia, acquired ear tissue defects, and other ear deformities. The core step in the procedure is to harvest the patient's own rib cartilage and sculpt it into an auricular framework. Clinically, the 6th, 7th, and 8th rib cartilages are preferred as donor sites because these areas have good cartilage development, sufficient material, and are suitable for the shaping requirements of the auricular framework.

[0003] Currently, during the surgical procedure of harvesting the target costal cartilage, the surgeon often uses a retractor to temporarily fix the incision and expose the surgical field. However, prolonged traction on the incision makes it difficult to maintain a constant tension, which can lead to instability in the surgeon's surgical field. Furthermore, when harvesting the other end of the target costal cartilage after one end has been severed, the cartilage is prone to wobbling, resulting in an irregular cut surface and potential damage to the perichondrium of the target costal cartilage. This not only affects the patient's postoperative recovery but also damages the perichondrial tissue of the injured costal cartilage.

[0004] Traditional incisions can lead to increased trauma, longer postoperative recovery periods, and longer hospital stays. Furthermore, the cutting and separation of chest wall muscles can affect chest stability, especially for children aged 6-10, the optimal surgical age, potentially increasing the risk of chest deformities. Firstly, larger incisions tend to leave noticeable scars on the chest wall postoperatively, particularly in children. As the chest develops, these scars can further proliferate and stretch, affecting aesthetics and causing psychological distress. Secondly, surgical field exposure depends on incision size. Due to the complex layers of chest wall muscles and the deep location of the costal cartilage, traditional open incisions struggle to achieve precise surgical field exposure. Exposing the chest wall can easily create blind spots, increasing the difficulty of the operation. This can lead to insufficient costal cartilage harvest, irregular shape, and affect the subsequent auricle sculpting. It can also damage the intercostal blood vessels, nerves, and pleura around the costal cartilage, causing complications such as pneumothorax, hemothorax, and severe postoperative pain, which can even endanger the patient's life in severe cases. In addition, a larger incision will lead to increased trauma, a longer postoperative recovery period, and a longer hospital stay. Furthermore, the cutting and separation of the chest wall muscles can easily affect the stability of the chest wall, especially for children aged 6-10, the optimal age for surgery, which may increase the risk of chest wall deformities. Summary of the Invention

[0005] This invention provides an endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery, which solves the technical problems of unstable surgical field exposure and irregular cut surface caused by rib cartilage harvesting wobbling, thus affecting postoperative recovery.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery includes a fixed cylinder sleeved on the outer wall of an endoscope. The outer wall of the fixed cylinder near its bottom has external threads. Limiting posts are symmetrically fixedly connected to the outer wall of the fixed cylinder near its top. Sliding plates are symmetrically fixedly connected to the outer wall of the fixed cylinder near its bottom, and L-shaped sliding grooves are formed on the outer wall of the sliding plates. A spreading assembly is slidably mounted on the outer wall of the sliding plates, the spreading assembly including a sliding post slidably connected to the outer wall of the sliding plates. A fixing assembly is fixedly mounted on the outer wall of the fixed cylinder, the fixing assembly including a first fixing post fixedly connected to the outer wall of the fixed cylinder near its middle portion, and a second fixing post fixedly connected to the end of the fixed cylinder away from the sliding plate. The fixing assembly also includes a sliding circular plate slidably sleeved on the outer wall of the fixed cylinder, and a third rotating cylinder rotatably connected to the sliding circular plate. The third rotating cylinder is connected to a clamping mechanism for holding the rib cartilage, the clamping mechanism including a gear meshing with the third rotating cylinder.

[0008] Optionally, a third clearance groove is provided on the top outer wall of the sliding column, a third sliding groove is provided on the side wall of the sliding column near the middle, a fourth clearance groove is provided on the bottom outer wall of the sliding column, and a hook plate is slidably connected to the inner wall of the fourth clearance groove.

[0009] Optionally, a fourth sliding groove is provided on the outer wall of the middle part of the hook plate, a screw is slidably connected to the inner wall of the third clearance groove, a first rotating cylinder is screwed to the outer wall of the screw, a first movable buckle is fixedly connected to the side wall of the sliding column near the fixed cylinder, and a connecting column is rotatably connected to the first movable buckle.

[0010] Optionally, a second movable buckle is rotatably connected to the end of the connecting post away from the first movable buckle, and a connecting circular plate is fixedly connected to the end of the second movable buckle away from the connecting post. A fifth clearance groove is provided on the top of the connecting circular plate near the outer wall of the second movable buckle, and a second rotating cylinder is rotatably connected to the top of the connecting circular plate.

[0011] Optionally, a first clearance groove is provided on the end wall of the first fixed column near the fixed cylinder, and a second sliding groove is symmetrically provided on the inner wall of the first clearance groove on the side away from the central axis of the fixed cylinder.

[0012] Optionally, a second clearance groove is symmetrically provided on the inner wall of the first clearance groove near the central axis of the fixed cylinder, and an abutment block is slidably connected to the inner wall of the second clearance groove. A second inclined surface is provided on the outer wall of the abutment block away from the central axis of the fixed cylinder, and a second elastic plate is symmetrically fixedly connected to the outer walls on both sides of the abutment block.

[0013] Optionally, a first inclined surface is provided on the inner wall of the end of the second fixing post away from the fixing cylinder, and a tension spring is fixedly connected to the end wall of the second fixing post near the fixing cylinder, and the end of the tension spring away from the second fixing post is fixedly connected to the sliding circular plate.

[0014] Optionally, a sixth clearance groove is provided on the side wall of the sliding circular plate, and limit grooves are symmetrically provided on the inner wall of the sliding circular plate. A plurality of first elastic plates are fixedly connected to the bottom outer wall of the sliding circular plate, and a connecting plate is fixedly connected to the end of the first elastic plate away from the sliding circular plate.

[0015] Optionally, a snap-fit ​​block is fixedly connected to the end of the connecting plate away from the first elastic plate, and a plurality of fifth sliding grooves are provided on the bottom outer wall of the sliding circular plate;

[0016] The clamping mechanism further includes: a first round rod and a second round rod. The first round rod is rotatably connected to the inner wall of the fifth sliding groove. The second round rod is fixedly connected to the end of the first round rod away from the sliding circular plate. A gear is fixedly connected to the end of the first round rod away from the second round rod.

[0017] Optionally, the clamping mechanism further includes: a third round rod, the third round rod being connected to the end of the second round rod away from the first round rod, and a gear being fixedly connected to the end of the first round rod away from the second round rod;

[0018] The third rotating cylinder is rotatably connected to the inner wall of the sixth clearance groove.

[0019] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0020] In the above scheme, by setting up a spreading component and a fixing component, the spreading range can be adjusted according to the size of the incision and the elasticity of the skin, fully exposing the surgical field and reducing the difficulty of the operation. Furthermore, when harvesting rib cartilage, the target rib cartilage can be clamped and fixed to prevent it from shaking and causing irregular cut surfaces, which would affect the patient's postoperative recovery.

[0021] By setting up sliding columns, hook plates, screws, a first rotating cylinder, a connecting column, a second rotating cylinder, and a connecting circular plate, medical staff can open the incision according to the patient's incision size and skin elasticity, keeping the incision open to facilitate surgical operations; at the same time, the relative position of the fixation cylinder and the target costal cartilage can be adjusted to further assist subsequent surgical operations.

[0022] By setting up a first fixing post, a second fixing post, an abutment block, a tension spring, and a locking block, it is not only convenient to insert the endoscope into the fixing tube, but also to clamp and fix the endoscope during the operation, avoiding displacement of the endoscope and causing blurring of the surgical field, thus ensuring the smooth progress of subsequent operations.

[0023] By setting up a first round rod, a second round rod, a third round rod, a gear, and a third rotating cylinder, the target rib cartilage of the patient can be clamped and fixed during the operation, avoiding the cartilage shaking during cutting and causing irregular cut surfaces, thus reducing the impact on postoperative recovery. After the cutting is completed, the target rib cartilage can be directly removed from the patient's incision. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to the present invention.

[0025] Figure 2 This is an enlarged three-dimensional structural diagram of the fixed cylinder and sliding plate of the present invention.

[0026] Figure 3 This is a half-section enlarged three-dimensional structural diagram of the fixed cylinder and sliding plate of the present invention;

[0027] Figure 4 This is an enlarged three-dimensional structural diagram of the sliding column, connecting circular plate, and second rotating cylinder of the present invention.

[0028] Figure 5 This is an enlarged three-dimensional structural diagram of the sliding column and the hook plate of the present invention.

[0029] Figure 6 This is an enlarged three-dimensional structural diagram of the sliding column of the present invention;

[0030] Figure 7 This is an enlarged three-dimensional structural diagram of the tension spring, sliding circular plate, and first circular rod of the present invention.

[0031] Figure 8 This is a half-section enlarged three-dimensional structural diagram of the sliding circular plate and the first circular rod of the present invention;

[0032] Figure 9 This is an enlarged three-dimensional structural diagram of the third rotating cylinder of the present invention.

[0033] [Figure Labels]

[0034] 1. Fixed cylinder; 2. External thread; 3. Sliding plate; 4. L-shaped sliding groove; 5. First fixed post; 6. First clearance groove; 7. Second sliding groove; 8. Second clearance groove; 9. Limiting post; 10. Second fixed post; 11. First inclined surface; 12. Sliding post; 13. Third clearance groove; 14. Third sliding groove; 15. Fourth clearance groove; 16. First movable buckle; 17. Hook plate; 18. Fourth sliding groove; 19. Screw; 20. First rotating cylinder; 21. Connecting post; 22. 23. Second movable buckle; 24. Connecting round plate; 25. Fifth clearance groove; 26. Second rotating cylinder; 27. Tension spring; 28. Sliding round plate; 29. ​​Sixth clearance groove; 20. Fifth sliding groove; 31. Limiting groove; 32. Gear; 33. First round rod; 34. Second round rod; 35. Third round rod; 36. Third rotating cylinder; 37. First elastic plate; 38. Connecting plate; 39. Snap-fit ​​block; 40. Endoscope; 41. Abutment block; 42. Second inclined surface; 43. Second elastic plate. Detailed Implementation

[0035] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 9As shown, an embodiment of the present invention provides an endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery, including a fixing cylinder 1 sleeved on the outer wall of an endoscope 39. The fixing cylinder 1 is a hollow metal cylinder. External threads 2 are formed on the outer wall of the fixing cylinder 1 near the bottom. Limiting posts 9, which are square metal cylinders, are symmetrically fixedly connected to the outer wall of the fixing cylinder 1 near the top. Sliding plates 3, which are square metal plates, are symmetrically fixedly connected to the outer wall of the fixing cylinder 1 near the bottom. L-shaped sliding grooves 4 are formed on the outer wall of the sliding plates 3. A spreading component is slidably mounted on the outer wall of the sliding plates 3. The spreading component can slide to an appropriate position and lock according to the size of the patient's incision and skin elasticity, spreading the patient's incision to facilitate subsequent surgery by medical personnel. The opening component includes a sliding column 12 slidably connected to the outer wall of the sliding plate 3. The sliding column 12 is a rubber column with a certain curvature. A fixing component is fixedly installed on the outer wall of the fixing cylinder 1. The fixing component can fix the endoscope 39 and clamp the costal cartilage to be removed from the patient. The fixing component includes a first fixing column 5 fixedly connected to the outer wall of the fixing cylinder 1 near the middle, and a second fixing column 10 fixedly connected to the end of the fixing cylinder 1 away from the sliding plate 3. Both the first fixing column 5 and the second fixing column 10 are metal cylinders. In use, by setting the opening component and the fixing component, the opening range can be adjusted according to the size of the incision and the elasticity of the skin to fully expose the surgical field and reduce the difficulty of the operation. When removing costal cartilage, the target costal cartilage can also be clamped and fixed to prevent it from shaking and causing irregular cut surfaces, which would affect the patient's postoperative recovery.

[0037] The aforementioned fixing assembly also includes a sliding circular plate 27 slidably sleeved on the outer wall of the fixing cylinder 1, and a third rotating cylinder 35 rotatably connected to the sliding circular plate 27; the third rotating cylinder 35 is connected to a clamping mechanism for clamping the costal cartilage, and the clamping mechanism includes a gear 31 meshing with the third rotating cylinder 35.

[0038] The sliding column 12 slides along the L-shaped sliding groove 4 on the sliding plate 3, and its position can be adjusted and locked according to the size of the incision and the elasticity of the skin, thereby opening the patient's incision and fully exposing the surgical field. The sliding circular plate 27 in the fixation assembly is sleeved on the outer wall of the fixation cylinder 1, and a third rotating cylinder 35 is rotatably connected to it.

[0039] The third rotating cylinder 35 drives the gear 31 that meshes with it, which in turn drives other components in the clamping mechanism connected to the gear to clamp the target rib cartilage, preventing it from shaking during cutting and ensuring a neat cut surface.

[0040] This device integrates incision opening and cartilage clamping, providing stable exposure of the surgical field and fixing of the rib cartilage during auricle reconstruction surgery, reducing the difficulty of the operation and facilitating postoperative recovery.

[0041] like Figures 4 to 6As shown, a third clearance groove 13 is provided on the top outer wall of the sliding column 12. The third clearance groove 13 is a circular groove and extends through the bottom of the sliding column 12. A third sliding groove 14 is provided on the side wall of the sliding column 12 near the middle. The third sliding groove 14 is a square groove, and the inner wall contour of the third sliding groove 14 matches the outer wall contour of the sliding plate 3 mentioned above. Therefore, the sliding column 12 can slide on the outer wall of the sliding plate 3. A fourth clearance groove 15 is provided on the bottom outer wall of the sliding column 12. The fourth clearance groove 15 is a square groove. A hook plate 17 is slidably connected to the inner wall of the fourth clearance groove 15. The hook plate 17 is a hook-shaped metal plate that can hook the edge of the patient's incision to open the patient's wound. The hook plate 17 has a cut, and because its outer wall contour matches the inner wall contour of the fourth clearance groove 15, the hook plate 17 can slide on the inner wall of the fourth clearance groove 15. A fourth sliding groove 18 is provided on the middle outer wall of the hook plate 17. The fourth sliding groove 18 is a square-shaped groove. A screw 19 is slidably connected to the inner wall of the third clearance groove 13. Because the outer wall contour of the screw 19 matches the inner wall contour of the third clearance groove 13, the screw 19 can slide on the inner wall of the third clearance groove 13. Furthermore, because the outer wall contour of the screw 19 matches the inner wall contours of both the fourth sliding groove 18 and the L-shaped sliding groove 4, the tip of the screw 19 can pass through the fourth sliding groove 18, while the L-shaped sliding groove 4 allows the screw 19 to enter the third clearance groove. During the process of 13, clearance space is provided. A first rotating cylinder 20 is screwed onto the outer wall of screw 19. The first rotating cylinder 20 is a hollow metal cylinder with threads on the inner wall and anti-slip grooves on the outer wall. Since the inner wall contour of the first rotating cylinder 20 matches the outer wall contour of screw 19, the first rotating cylinder 20 can rotate and move on the outer wall of screw 19. As the bottom outer wall of the first rotating cylinder 20 abuts against the top outer wall of sliding column 12, the hook plate 17 can be locked. A first movable buckle 16 is fixedly connected to the side wall of sliding column 12 near fixed cylinder 1. A connecting column 21 is rotatably connected to the first movable buckle 16. The connecting column 21 is a square column with arcs at both ends. A second movable buckle is rotatably connected to the end of connecting column 21 away from the first movable buckle 16. The movable buckle 22 has a connecting circular plate 23 fixedly connected to its end away from the connecting post 21. The connecting circular plate 23 is a hollow metal circular plate, and its inner wall contour matches the outer wall contour of the fixed cylinder 1. Therefore, the connecting circular plate 23 can slide on the outer wall of the fixed cylinder 1. A fifth clearance groove 24 is provided on the top of the connecting circular plate 23 near the outer wall of the second movable buckle 22. The fifth clearance groove 24 is a circular groove. A second rotating cylinder 25 is rotatably connected to the top of the connecting circular plate 23. The second rotating cylinder 25 is a hollow metal cylinder with threads on its inner wall and anti-slip grooves on its outer wall. The inner wall contour of the second rotating cylinder 25 matches the outer wall contour of the external thread 2. Therefore, the second rotating cylinder 25 can rotate and move on the outer wall of the external thread 2.As the second rotating cylinder 25 moves, it causes the connecting circular plate 23 to move synchronously.

[0042] In preparation for surgery, medical staff first pass the tip of screw 19 through the fourth sliding groove 18 of hook plate 17, and then through the third clearance groove 13. Next, the first rotating cylinder 20 is threaded onto the outer wall of screw 19 near its top, and rotated until its bottom outer wall is against the top outer wall of sliding column 12, thus locking hook plate 17. Then, the two hook plates 17 are hooked onto both sides of the patient's incision. After confirming the location of the target costal cartilage, the two first rotating cylinders 20 are rotated to release the locking of hook plates 17. The two hook plates 17 are then slid along the inner wall of the fourth clearance groove 15 until the fixing cylinder 1 is directly above the target costal cartilage. The two first rotating cylinders 20 are then tightened again to relock hook plates 17. Then, the second rotating cylinder 25 is rotated, and the second rotating cylinder 25 will rotate and displace along the outer wall of the external thread 2, synchronously driving the connecting circular plate 23 to move; the second movable buckle 22 fixed on the connecting circular plate 23 then drives the connecting column 21 to move, and the connecting column 21 further drives the first movable buckle 16 to move synchronously. At the same time, the sliding column 12 slides along the outer wall of the sliding plate 3 under the drive of the first movable buckle 16, and the locked hook plate 17 moves synchronously with the sliding column 12, thereby smoothly pulling open the two sides of the incision hooked by the hook plate 17. With the above structural settings, medical staff can open the incision according to the size of the patient's incision and the elasticity of the skin, keeping the incision open, which is convenient for surgical operations; at the same time, it can adjust the relative position of the fixing cylinder 1 and the target costal cartilage, further assisting subsequent surgical operations.

[0043] like Figures 1 to 3 , Figure 7 and Figure 8 As shown, a first clearance groove 6 is provided on the end wall of the first fixed column 5 near the fixed cylinder 1. A second sliding groove 7 is symmetrically provided on the inner wall of the first clearance groove 6 on the side away from the central axis of the fixed cylinder 1. A second clearance groove 8 is symmetrically provided on the inner wall of the first clearance groove 6 on the side near the central axis of the fixed cylinder 1. An abutment block 40 is slidably connected to the inner wall of the second clearance groove 8. A second inclined surface 41 is provided on the outer wall of the abutment block 40 on the side away from the central axis of the fixed cylinder 1. Second elastic plates 42 are symmetrically fixedly connected to the outer walls on both sides of the abutment block 40. The inner wall of the second fixed post 10 away from the fixed cylinder 1 has a first inclined surface 11. A tension spring 26 is fixedly connected to the end wall of the second fixed post 10 near the fixed cylinder 1. The end of the tension spring 26 away from the second fixed post 10 is fixedly connected to the aforementioned sliding circular plate 27. Several first elastic plates 36 are fixedly connected to the bottom outer wall of the sliding circular plate 27. A connecting plate 37 is fixedly connected to the end of the first elastic plate 36 away from the sliding circular plate 27. A snap-fit ​​block 38 is fixedly connected to the end of the connecting plate 37 away from the first elastic plate 36.

[0044] Specifically, the first clearance groove 6 is formed on the end wall of the first fixed post 5 near the fixed cylinder 1. The first clearance groove 6 is an annular groove with a square cross-section. Two second sliding grooves 7 are symmetrically formed on the inner wall of the first clearance groove 6 away from the central axis of the fixed cylinder 1. The second sliding grooves 7 are square grooves that extend through the other end of the first fixed post 5. The inner wall of the second sliding grooves 7 near the top is chamfered. Two second clearance grooves 8 are symmetrically formed on the inner wall of the first clearance groove 6 on the side near the central axis of the fixed cylinder 1. The second clearance grooves 8 are square grooves and are connected to the inner wall of the fixed cylinder 1. Because the outer contour of the contact block 40 is close to the second clearance groove 8... The inner wall contours are matched, so the contact block 40 can slide on the inner wall of the second clearance groove 8. The contact block 40 is a square metal column. The second inclined surface 41 is opened on the outer wall of the contact block 40 away from the central axis of the fixed cylinder 1. One end of each of the two second elastic plates 42 is fixedly connected to the outer walls of the two sides of the contact block 40. The second elastic plates 42 are C-shaped metal plates, and the overall contour formed by the two second elastic plates 42 and the two contact blocks 40 is circular. When the contact block 40 is subjected to force and slides along the inner wall of the second clearance groove 8 toward the central axis of the fixed cylinder 1, the second elastic plates 42 will be subjected to force and deform along their bending direction. The first inclined surface 1 1. A first inclined surface 11 is set on the inner wall of the end of the second fixing post 10 away from the fixing cylinder 1. The first inclined surface 11 can provide a guiding effect when medical staff insert the endoscope 39 into the fixing cylinder 1. One end of the tension spring 26 is fixedly connected to the end wall of the second fixing post 10 near the fixing cylinder 1, and the other end of the tension spring 26 is fixedly connected to the top outer wall of the sliding circular plate 27. The tension spring 26 is sleeved on the outer wall of the fixing cylinder 1. The sliding circular plate 27 is a hollow metal circular plate. When the sliding circular plate 27 is subjected to force and moves along the outer wall of the fixing cylinder 1 towards the sliding plate 3, the tension spring 26 will be subjected to force and deform along its bending direction. One end of the first elastic plate 36 is fixedly connected to the bottom of the sliding circular plate 27. On the outer wall of the part, the first elastic plate 36 is a C-shaped metal plate. When the first elastic plate 36 is subjected to force, the first elastic plate 36 will deform along its bending direction. There are two first elastic plates 36 in total. The two first elastic plates 36 are symmetrical about the central axis of the sliding circular plate 27. The other end of the first elastic plate 36 is fixedly connected to a connecting plate 37. The connecting plate 37 is a square metal plate. The snap-fit ​​block 38 is fixedly connected to the end of the connecting plate 37 away from the first elastic plate 36. The snap-fit ​​block 38 is a triangular prism made of metal. Since the outer contour of the snap-fit ​​block 38 matches the inner contour of the second sliding groove 7, the snap-fit ​​block 38 can slide along the inner wall of the second sliding groove 7.

[0045] Guided by the first inclined plane 11, one end of the endoscope 39 is inserted into the fixed cylinder 1. To prevent the endoscope 39 from shifting during the operation, causing a blurred surgical field and affecting the surgical procedure, medical personnel can press the sliding circular plate 27, causing it to move along the outer wall of the fixed cylinder 1 towards the sliding plate 3. During this process, the tension spring 26 is stretched and deforms along its bending direction. The first elastic plate 36, the connecting plate 37, and the locking block 38 move synchronously with the sliding circular plate 27. The locking block 38 slides into the second sliding groove 7 through the chamfered guide. At this time, the connecting plate 37 will tilt, and the first elastic plate 36 will be stressed and deform along its bending direction. When the bottom outer wall of the sliding circular plate 27 abuts against the top outer wall of the L-shaped sliding groove 4, the locking block 38 slides out of the second sliding groove 7, releasing the contact and limiting effect with the second sliding groove 7. At this point, the first elastic plate 36 is relieved of force and returns to its initial shape, causing the connecting plate 37 to no longer remain tilted. Simultaneously, the connecting plate 37 pulls the locking block 38 to move, causing the outer wall of the locking block 38 to adhere to and abut against the bottom outer wall of the first fixing post 5, thus completing the structural locking. During the locking process, the bottom of the locking block 38 will abut against the second inclined surface 41, causing the abutting block 40 to slide along the inner wall of the second clearance groove 8 towards the central axis of the fixing cylinder 1. The second elastic plate 42 will be subjected to force and deform along its bending direction. At this time, the end of the abutting block 40 away from the second inclined surface 41 will press against the outer wall of the endoscope 39, achieving clamping and fixing of the endoscope 39. The above structural design not only facilitates the insertion of the endoscope 39 into the fixing cylinder 1, but also allows for clamping and fixing of the endoscope 39 during the operation, preventing displacement of the endoscope 39 and causing blurred surgical field, thus ensuring the smooth progress of subsequent surgeries.

[0046] like Figure 1 , Figure 2 and Figures 7 to 9 As shown, a sixth clearance groove 28 is provided on the side wall of the sliding circular plate 27, and limit grooves 30 are symmetrically provided on the inner wall of the sliding circular plate 27. A third rotating cylinder 35 is rotatably connected to the inner wall of the sixth clearance groove 28.

[0047] The connecting plate 37 is fixedly connected to a snap-fit ​​block 38 at one end away from the first elastic plate 36, and a plurality of fifth sliding grooves 29 are provided on the bottom outer wall of the sliding circular plate 27; the clamping mechanism further includes: a first round rod 32 and a second round rod 33, the first round rod 32 is rotatably connected to the inner wall of the fifth sliding groove 29, the second round rod 33 is fixedly connected to one end of the first round rod 32 away from the sliding circular plate 27, and a gear 31 is fixedly connected to one end of the first round rod 32 away from the second round rod 33.

[0048] Gear 31 is fixedly connected to one end of the first round rod 32. When the gear is driven, it drives the first round rod 32 to rotate within the fifth sliding groove 29 of the sliding plate 27.

[0049] The other end of the first round rod 32 is fixedly connected to the second round rod 33. Therefore, the rotation of the first round rod will drive the second round rod to rotate synchronously, thereby clamping or releasing the costal cartilage.

[0050] The bottom of the sliding circular plate 27 is connected to a connecting plate 37 via a first elastic plate 36, and a locking block 38 is fixed on the connecting plate 37. When the sliding circular plate moves, the locking block can engage or disengage from the corresponding slot through the elastic deformation of the first elastic plate, thereby positioning or locking the position of the sliding circular plate.

[0051] The first round rod 32 and the second round rod 33, driven by gear 31, rotate to directly clamp the target rib cartilage, preventing wobbling during cutting and ensuring a neat cut surface.

[0052] By engaging the snap-fit ​​block 38 with the elastic plate 36, the position of the sliding circular plate 27 is stabilized during clamping, ensuring that the clamping mechanism operates accurately and reliably.

[0053] Furthermore, the clamping mechanism also includes: a third round rod 34, which is connected to the end of the second round rod 33 away from the first round rod 32, and a gear 31 is fixedly connected to the end of the first round rod 32 away from the second round rod 33; the third rotating cylinder 35 is rotatably connected to the inner wall of the sixth clearance groove 28.

[0054] The gear 31 is fixedly connected to one end of the first round rod 32. When the gear is driven, it causes the first round rod to rotate around its axis.

[0055] The other end of the first round rod 32 is fixedly connected to the second round rod 33, and the end of the second round rod 33 away from the first round rod is fixedly connected to the third round rod 34. Therefore, the rotation of the first round rod will be transmitted to the second round rod 33 and the third round rod 34 in sequence, causing the third round rod 34 to swing or rotate, thereby achieving the clamping or loosening of the costal cartilage.

[0056] The third rotating cylinder 35 is rotatably connected to the inner wall of the sixth clearance groove 28. Specifically, the inner wall of the third rotating cylinder 35 is provided with toothed grooves. When the third rotating cylinder 35 rotates, it drives the gear 31 meshing with it to rotate, thereby providing driving force for the above-mentioned clamping action.

[0057] The third rotating cylinder 35 drives the gear 31, ultimately causing the third round rod 34 to clamp the target rib cartilage, preventing wobbling during cutting and ensuring a neat cut surface. The third rotating cylinder 35 is installed in the sixth clearance groove 28 to ensure smooth rotation and reliable transmission.

[0058] Specifically, the sixth clearance groove 28 is formed on the side wall of the sliding circular plate 27. The sixth clearance groove 28 is an annular groove with a square cross-section. The fifth sliding groove 29 is a circular groove and is connected to the sixth clearance groove 28. There are two fifth sliding grooves 29, which are symmetrical about the central axis of the sliding circular plate 27. The first round rod 32 is rotatably connected to the inner wall of the fifth sliding groove 29. The first round rod 32 is a metal round rod. Since the outer contour of the first round rod 32 matches the inner contour of the fifth sliding groove 29, the first round rod 32 can rotate on the inner wall of the fifth sliding groove 29. The two first round rods 32 are of different lengths. The second round rod 33 is fixedly connected to the first round rod 32 away from the sliding circular plate 27. At one end of 7, the second round rod 33 is a U-shaped metal tube. When the second round rod 33 is subjected to force, it will deform along its bending direction. The third round rod 34 is fixedly connected to the end of the second round rod 33 away from the first round rod 32. The gear 31 is fixedly connected to the end of the first round rod 32 away from the second round rod 33, and the gear 31 is located in the sixth clearance groove 28. The third rotating cylinder 35 is rotatably connected to the inner wall of the sixth clearance groove 28. The third rotating cylinder 35 is an annular column with a convex cross-section. The outer peripheral wall of the third rotating cylinder 35 is provided with anti-slip grooves, and the inner peripheral wall of the third rotating cylinder 35 is provided with tooth grooves. The tooth grooves on the third rotating cylinder 35 mesh with the gear 31. When medical staff rotate the third rotating cylinder 35, it will drive the gear 31 to rotate synchronously.

[0059] When medical staff press the sliding disc 27, the sliding disc 27 drives the gear 31 to move synchronously towards the sliding plate 3. The first round rod 32, the second round rod 33, and the third round rod 34 move synchronously accordingly, with the two third round rods 34 extending to both sides of the patient's target costal cartilage. Subsequently, the medical staff rotates the third rotating cylinder 35, causing the gear 31 to rotate synchronously. The gear 31 drives the first round rod 32 to rotate along the inner wall of the fifth sliding groove 29, while simultaneously driving the second round rod 33 and the third round rod 34 to rotate synchronously. Due to the difference in length between the two first round rods 32, the two third round rods 34 will form a height difference, and during rotation, they will respectively abut against the outer wall of the patient's target costal cartilage, achieving clamping and positioning of the target costal cartilage. During the clamping of the outer wall of the curved surface of the target costal cartilage, the two third round rods 34 will adaptively tilt with the curved surface of the bone, and the corresponding two second round rods 33 will bend and deform under force to adapt to the clamping posture. When the operation is over, the medical staff will remove the device from the patient's incision. The target costal cartilage clamped and fixed by the two third round rods 34 will simultaneously detach from the incision. Then, the third rotating cylinder 35 can be rotated to remove the target costal cartilage from the device. The above structure can not only clamp and fix the patient's target costal cartilage during the operation, avoiding the cartilage shaking during cutting and causing irregular cut surfaces, thus reducing the impact on postoperative recovery, but also directly remove the target costal cartilage from the patient's incision after cutting.

[0060] The working process of the endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery provided by this invention is as follows:

[0061] In the above procedure, before use, medical personnel first pass the top of the screw 19 through the fourth sliding groove 18 of the hook plate 17, and then through the third clearance groove 13. Next, the first rotating cylinder 20 is threaded onto the outer wall of the screw 19 near the top, and the first rotating cylinder 20 is rotated until its bottom outer wall is in contact with the top outer wall of the sliding column 12, thus locking the hook plate 17. Then, the two hook plates 17 are hooked onto both sides of the patient's incision. After confirming the location of the target costal cartilage, the two first rotating cylinders 20 are rotated to release the locking of the hook plates 17. The two hook plates 17 are then slid along the inner wall of the fourth clearance groove 15 until the fixing cylinder 1 is directly above the target costal cartilage. The two first rotating cylinders 20 are then tightened again to relock the hook plates 17. Then, the second rotating cylinder 25 is rotated, and the second rotating cylinder 25 will rotate and move along the outer wall of the external thread 2, synchronously driving the connecting circular plate 23 to move; the second movable buckle 22 fixed on the connecting circular plate 23 then drives the connecting column 21 to move, and the connecting column 21 further drives the first movable buckle 16 to move synchronously. At the same time, the sliding column 12 slides along the outer wall of the sliding plate 3 under the drive of the first movable buckle 16, and the locked hook plate 17 moves synchronously with the sliding column 12, thereby smoothly pulling open the two sides of the cut hooked by the hook plate 17.

[0062] Subsequently, medical staff insert one end of the endoscope 39 into the fixation tube 1. To prevent the endoscope 39 from shifting during the operation, causing a blurred surgical field and affecting the surgical procedure, the sliding disc 27 can be pressed, causing it to move along the outer wall of the fixation tube 1 towards the sliding plate 3. During this process, the tension spring 26 is stretched and deforms along its bending direction. The first elastic plate 36, the connecting plate 37, and the locking block 38 move synchronously with the sliding disc 27. The locking block 38 slides into the second sliding groove 7 through the chamfered guide. At this time, the connecting plate 37 will tilt, and the first elastic plate 36 will be stressed and deform along its bending direction. When the bottom outer wall of the sliding disc 27 abuts against the top outer wall of the L-shaped sliding groove 4, the locking block 38 slides out of the second sliding groove 7, releasing the contact limit with the second sliding groove 7. At this point, the first elastic plate 36 is relieved of force and returns to its initial shape, causing the connecting plate 37 to no longer remain tilted. Simultaneously, the connecting plate 37 pulls the locking block 38 to move, causing the outer wall of the locking block 38 to adhere to and abut against the bottom outer wall of the first fixing post 5, thus completing the structural locking. During the locking process, the bottom of the locking block 38 will abut against the second inclined surface 41, causing the abutting block 40 to slide along the inner wall of the second clearance groove 8 towards the central axis of the fixing cylinder 1. The second elastic plate 42 will be subjected to force and deform along its bending direction. At this time, the end of the abutting block 40 away from the second inclined surface 41 will press against the outer wall of the endoscope 39, achieving clamping and fixing of the endoscope 39 and preventing displacement during the operation.

[0063] During the process of medical staff pressing the sliding disc 27, the sliding disc 27 drives the gear 31 to move synchronously towards the sliding plate 3. The first round rod 32, the second round rod 33, and the third round rod 34 move synchronously accordingly, with the two third round rods 34 extending to both sides of the patient's target costal cartilage. Subsequently, the medical staff rotates the third rotating cylinder 35, driving the gear 31 to rotate synchronously. The gear 31 drives the first round rod 32 to rotate along the inner wall of the fifth sliding groove 29, while simultaneously driving the second round rod 33 and the third round rod 34 to rotate synchronously. Due to the difference in length between the two first round rods 32, the two third round rods 34 will form a height difference and, during rotation, will respectively abut against the outer wall of the patient's target costal cartilage, achieving clamping and positioning of the target costal cartilage. During the clamping of the curved outer wall of the target costal cartilage, the two third round rods 34 will adaptively tilt with the curved surface of the bone, and the corresponding two second round rods 33 will bend and deform under force to adapt to the clamping posture.

[0064] Subsequently, medical staff fitted a flexible measuring ruler to the curved surface of the target rib cartilage to measure its length, width, and thickness, ensuring the harvested material size was suitable for the ear framework sculpting requirements and avoiding the problem of harvesting too little or too much material. Then, using a sterile medical marking pen, they inserted it into the surgical area through the gaps on both sides of the fixation tube 1 to mark the harvesting area on the cartilage surface, ensuring cutting accuracy and preventing abnormal cartilage harvesting morphology that could affect subsequent framework sculpting. Finally, a dissector and cutting blade were used to complete the harvesting of the rib cartilage.

[0065] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An endoscopic-assisted rib cartilage harvesting device for auricle reconstruction surgery, characterized in that, The device includes a fixing cylinder fitted onto the outer wall of an endoscope. The outer wall of the fixing cylinder near the bottom has an external thread. Limiting posts are symmetrically fixedly connected to the outer wall of the fixing cylinder near the top. Sliding plates are symmetrically fixedly connected to the outer wall of the fixing cylinder near the bottom. The outer wall of the sliding plates has an L-shaped sliding groove. A support assembly is slidably mounted on the outer wall of the sliding plate, and the support assembly includes a sliding column slidably connected to the outer wall of the sliding plate. A fixing assembly is fixedly installed on the outer wall of the fixing cylinder. The fixing assembly includes a first fixing post fixedly connected to the outer wall of the fixing cylinder near the middle part, and a second fixing post fixedly connected to the end of the fixing cylinder away from the sliding plate. The fixing assembly further includes a sliding circular plate slidably sleeved on the outer wall of the fixing cylinder, and a third rotating cylinder is rotatably connected to the sliding circular plate; the third rotating cylinder is connected to a clamping mechanism for clamping the costal cartilage, and the clamping mechanism includes a gear meshing with the third rotating cylinder.

2. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 1, characterized in that, A third clearance groove is provided on the top outer wall of the sliding column, a third sliding groove is provided on the side wall of the sliding column near the middle, a fourth clearance groove is provided on the bottom outer wall of the sliding column, and a hook plate is slidably connected to the inner wall of the fourth clearance groove.

3. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 2, characterized in that, A fourth sliding groove is provided on the outer wall of the middle part of the hook plate. A screw is slidably connected to the inner wall of the third clearance groove. A first rotating cylinder is screwed to the outer wall of the screw. A first movable buckle is fixedly connected to the side wall of the sliding column near the fixed cylinder. A connecting column is rotatably connected to the first movable buckle.

4. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 3, characterized in that, The end of the connecting post away from the first movable buckle is rotatably connected to a second movable buckle. The end of the second movable buckle away from the connecting post is fixedly connected to a connecting circular plate. A fifth clearance groove is provided on the top of the connecting circular plate near the outer wall of the second movable buckle. A second rotating cylinder is rotatably connected to the top of the connecting circular plate.

5. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 1, characterized in that, A first clearance groove is provided on the end wall of the first fixed column near the fixed cylinder, and a second sliding groove is symmetrically provided on the inner wall of the side of the first clearance groove away from the central axis of the fixed cylinder.

6. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 5, characterized in that, A second clearance groove is symmetrically provided on the inner wall of the first clearance groove near the central axis of the fixed cylinder. An abutment block is slidably connected to the inner wall of the second clearance groove. A second inclined surface is provided on the outer wall of the abutment block away from the central axis of the fixed cylinder. A second elastic plate is symmetrically fixedly connected to the outer walls on both sides of the abutment block.

7. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 5, characterized in that, The second fixing post has a first inclined surface on the inner wall of the end away from the fixing cylinder, and a tension spring is fixedly connected to the end wall of the second fixing post near the fixing cylinder. The end of the tension spring away from the second fixing post is fixedly connected to the sliding circular plate.

8. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 7, characterized in that, The sliding circular plate has a sixth clearance groove on its side wall and symmetrical limit grooves on its inner wall. Several first elastic plates are fixedly connected to the bottom outer wall of the sliding circular plate, and a connecting plate is fixedly connected to the end of the first elastic plate away from the sliding circular plate.

9. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 8, characterized in that, A snap-fit ​​block is fixedly connected to the end of the connecting plate away from the first elastic plate, and a plurality of fifth sliding grooves are provided on the bottom outer wall of the sliding circular plate. The clamping mechanism further includes: a first round rod and a second round rod. The first round rod is rotatably connected to the inner wall of the fifth sliding groove. The second round rod is fixedly connected to the end of the first round rod away from the sliding circular plate. A gear is fixedly connected to the end of the first round rod away from the second round rod.

10. The endoscopic-assisted rib cartilage harvesting device for auricular reconstruction surgery according to claim 9, characterized in that, The clamping mechanism further includes: a third round rod, which is connected to the end of the second round rod away from the first round rod, and a gear is fixedly connected to the end of the first round rod away from the second round rod; The third rotating cylinder is rotatably connected to the inner wall of the sixth clearance groove.

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