Adjusting device for 3D printing bone filler

Abstract

The utility model discloses an adjusting device for 3D printing bone filler, and relates to the technical field of medical instruments. The adjusting device for the 3D printing bone filler comprises a base, and a movable sleeve is arranged on one side of the base in a sliding mode. According to the adjusting device for the 3D printing bone filler, by adjusting the positions of a movable sleeve and an adjusting head, a clamping mechanism is located over the position needing to be connected, after a bridging rod block is fixed, a toothed bar is pressed downwards, the toothed bar moves left and right under the pressure, the bridging rod block is made to approach the connecting position, and then the bridging rod block is fixed. After the positions of the movable sleeve and the adjusting head are further adjusted, the toothed bar is continuously pressed downwards, and the limiting gear is blocked by the bayonet lock, so that the bridging rod block is accurately and tightly pressed at the joint, the bridging rod block is more stable when fixed, the position of the bridging rod block is convenient to adjust, the structure is simple, the operation is convenient, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an adjustment device for 3D printed bone fillers. Background Technology

[0002] 3D-printed bone fillers are an advanced medical technology that uses 3D printing to create fillers that conform to the patient's bone defects, enabling bone repair and reconstruction. They are primarily used to repair bone defects and missing parts, such as those caused by trauma, osteoporosis, or bone tumors. Furthermore, they can be used in maxillofacial surgery, alveolar bone repair, and other fields. 3D-printed bone fillers can restore damaged bone, improve patients' physiological function and quality of life. During use, 3D-printed bone fillers are typically used in conjunction with bridging blocks to provide additional support and ensure stability after implantation.

[0003] Currently, when 3D-printed bone fillers are used to fill bone defects in the hand, the bridging rods are usually connected to the bone filler using mechanical methods such as threaded connections and pin connections. During the implantation process, the pin holes are prone to misalignment. In this case, the surgeon needs to make manual adjustments, which is inconvenient and prone to misalignment, reducing the efficiency of the surgery. Utility Model Content

[0004] The purpose of this invention is to provide an adjustment device for 3D printed bone fillers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustment device for 3D printed bone filler, comprising a base, a movable sleeve slidably disposed on one side of the base, a toothed rod slidably connected inside the movable sleeve, an adjustment box fixedly connected to one side of the movable sleeve, a gear rotatably connected inside the adjustment box, the outer surface of the gear meshing with one side of the toothed rod, a limiting gear fixedly connected to one end of the gear, a locking pin movably inserted at the top of the adjustment box and at the position of the limiting gear, the bottom end of the locking pin being inserted into the outer surface of the limiting gear, an adjustment head slidably inserted inside the toothed rod, and a clamping mechanism disposed inside the adjustment head.

[0006] Preferably, the clamping mechanism includes a bidirectional lead screw rotatably connected inside the adjusting head, and two clamping frames threadedly connected to the outer surface of the bidirectional lead screw. One end of each clamping frame is slidably connected to the inside of the adjusting head. A square through hole is provided on one side of each clamping frame. A first fixing bolt is inserted into each of the two square through holes. A stop block is threadedly connected to one end of each of the two first fixing bolts. The outer surfaces of the two stop blocks are respectively in close contact with the outer surfaces of the two clamping frames.

[0007] Preferably, one end of the bidirectional lead screw is fixedly connected to a polygonal connecting column through the inner side wall of the adjusting head, and a fixing sleeve is slidably connected to the outer surface of the polygonal connecting column. A fixing seat is inserted into one end of the fixing sleeve, and one end of the fixing seat is fixedly connected to one end of the adjusting head.

[0008] Preferably, one end of the polygonal connecting column is fixedly connected to a baffle, and one end of the fixing sleeve is interference-fitted with the inside of the fixing seat.

[0009] Preferably, a groove is provided on one side of the base, and a slider is fixedly connected to one side of the movable sleeve, with the outer surface of the slider slidably connected to the inner surface of the groove.

[0010] Preferably, a positioning block is fixedly connected to one side of the movable sleeve, and a positioning plate is fixedly connected to the top of the base near the edge. A positioning pin is inserted into the positioning block, and one end of the positioning pin is inserted into the positioning plate.

[0011] Preferably, a second fixing bolt is threaded to the top of the rack, the bottom end of the second fixing bolt passes through the top of the rack and abuts against the outer surface of the adjusting head, and a pressure spring is fixedly connected to the outer surface of the locking pin, the other end of the pressure spring abuts against the top surface inside the adjusting box.

[0012] This invention provides an adjustment device for 3D printed bone fillers, which has the following advantages:

[0013] (1) By adjusting the position of the movable sleeve and the adjusting head, the clamping mechanism is positioned directly above the required connection point. After fixing the bridging rod block, the toothed rod is pressed down. The toothed rod moves left and right under the pressure and brings the bridging rod block closer to the connection point. After further adjusting the position of the movable sleeve and the adjusting head, the toothed rod is pressed down again. Since the limiting gear is blocked by the locking pin, the bridging rod block is pressed precisely and tightly at the connection point, making the bridging rod block more stable when fixed and facilitating the adjustment of the position of the bridging rod block. The structure is simple, the operation is convenient, and the surgical efficiency is improved.

[0014] (2) This utility model drives two clamping frames to retract by rotating a bidirectional lead screw. During the retraction process, the bridging rod block is clamped and fixed. During the fixing process, the position of the stop block can be adjusted so that the bottom surface of the bridging rod block can be in close contact with the bone surface. This enables the clamping and fixing of bridging rod blocks of different sizes and improves the practicality of the device.

[0015] (3) This utility model limits the bidirectional lead screw by inserting the fixing sleeve along the polygonal connecting column into the fixing seat, making the position of the clamping frame more stable and the bridging rod block less prone to loosening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded view of the structure between the movable sleeve and the adjusting head in this practical application.

[0018] Figure 3 This is a schematic diagram of the internal structure of the regulating box in this utility model;

[0019] Figure 4 This is an exploded view of the adjustment head structure in this practical application.

[0020] In the diagram: 1. Base; 2. Movable sleeve; 3. Gear rack; 4. Adjusting head; 5. Adjusting box; 6. Gear; 7. Limiting gear; 8. Locking pin; 9. Compression spring; 10. Double-acting screw; 11. Clamping frame; 12. Square through hole; 13. Fixing bolt No. 1; 14. Stop block; 15. Slide groove; 16. Sliding block; 17. Positioning plate; 18. Positioning block; 19. Positioning pin; 20. Fixed seat; 21. Polygonal connecting column; 22. Fixing sleeve; 23. Baffle; 24. Fixing bolt No. 2. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] This utility model provides a technical solution: such as Figure 1-4As shown in this embodiment, an adjustment device for 3D printed bone filler includes a base 1, a movable sleeve 2 slidably disposed on one side of the base 1, a toothed rod 3 slidably connected inside the movable sleeve 2, an adjustment box 5 fixedly connected to one side of the movable sleeve 2, a gear 6 rotatably connected inside the adjustment box 5, the outer surface of the gear 6 meshing with one side of the toothed rod 3, a limiting gear 7 fixedly connected to one end of the gear 6, a locking pin 8 movably inserted into the top of the adjustment box 5 at the position of the limiting gear 7, the bottom end of the locking pin 8 inserted into the outer surface of the limiting gear 7, an adjustment head 4 slidably inserted inside the toothed rod 3, and a clamping mechanism provided inside the adjustment head 4. By setting the toothed rod 3, through its cooperation with the limiting gear 7 and the locking pin 8, the bridging rod block can be tightly pressed against the connection point when not adjusted, facilitating connection and fixation. By setting the gear 6, the toothed rod 3 can be limited.

[0023] like Figure 2 and Figure 4 As shown, the clamping mechanism includes a bidirectional lead screw 10 rotatably connected inside the adjusting head 4. Two clamping frames 11 are threadedly connected to the outer surface of the bidirectional lead screw 10. One end of each clamping frame 11 is slidably connected to the inside of the adjusting head 4. A square through hole 12 is provided on one side of each clamping frame 11. A first fixing bolt 13 is inserted into each of the two square through holes 12. A stop block 14 is threadedly connected to one end of each of the two first fixing bolts 13. The outer surfaces of the two stop blocks 14 are tightly fitted to the outer surfaces of the two clamping frames 11. By setting the bidirectional lead screw 10, the two clamping frames 11 can be moved simultaneously, which facilitates the fixing of the bridging rod block. By setting the stop block 14, the position of the bridging rod block between the two clamping frames 11 can be limited. By setting the first fixing bolt 13, the stop block 14 can be fixed, improving the stability of the position of the stop block 14.

[0024] like Figure 4 As shown, one end of the bidirectional lead screw 10 passes through the inner side wall of the adjusting head 4 and is fixedly connected to a polygonal connecting post 21. A fixing sleeve 22 is slidably connected to the outer surface of the polygonal connecting post 21. A fixing seat 20 is inserted into one end of the fixing sleeve 22. One end of the fixing seat 20 is fixedly connected to one end of the adjusting head 4. By setting the fixing sleeve 22, the bidirectional lead screw 10 can be easily adjusted by cooperating with the polygonal connecting post 21. The bidirectional lead screw 10 can be fixed by the fixing sleeve 22 and the fixing seat 20 to ensure the clamping force and improve the clamping stability.

[0025] like Figure 2 and Figure 4 As shown, a baffle 23 is fixedly connected to one end of the polygonal connecting column 21, and one end of the fixing sleeve 22 is interference-fitted with the inside of the fixing seat 20. By setting the baffle 23, the fixing sleeve 22 can be limited to prevent it from falling off.

[0026] like Figure 1 and Figure 2 As shown, a groove 15 is provided on one side of the base 1, and a slider 16 is fixedly connected to one side of the movable sleeve 2. The outer surface of the slider 16 is slidably connected to the inner surface of the groove 15. By setting the groove 15 and the slider 16, the movable sleeve 2 can be made more stable when moving.

[0027] like Figure 2 As shown, a positioning block 18 is fixedly connected to one side of the movable sleeve 2, and a positioning plate 17 is fixedly connected to the top of the base 1 near the edge. A positioning pin 19 is inserted into the positioning block 18, and one end of the positioning pin 19 is inserted into the positioning plate 17. This can fix the movable sleeve 2, so that the bridging rod block will not shake when connected, thus improving the stability during installation.

[0028] like Figure 1 and Figure 2 As shown, a second fixing bolt 24 is threaded to the top of the rack 3. The bottom end of the second fixing bolt 24 passes through the top of the rack 3 and abuts against the outer surface of the adjusting head 4. A pressure spring 9 is fixedly connected to the outer surface of the locking pin 8. The other end of the pressure spring 9 abuts against the top surface inside the adjusting box 5. By setting the second fixing bolt 24, the position of the adjusting head 4 can be fixed. By setting the pressure spring 9, a continuous force can be provided to the locking pin 8, so that the locking pin 8 is stably in the limiting gear 7 without the action of external force.

[0029] This invention provides an adjustment device for 3D printed bone fillers, the specific working principle of which is as follows:

[0030] When connecting the 3D-printed bone filler to the bone, medical staff place the patient's arm on the base 1, fix the arm to expose the bone, and then pull the fixing sleeve 22 out from the fixing seat 20. Then, rotating the fixing sleeve 22 drives the bidirectional lead screw 10 connected to the polygonal connecting column 21 to rotate. During the rotation of the bidirectional lead screw 10, it drives the two clamping frames 11 to retract and clamp and fix the bridging rod block. Then, the position of the bridging rod block is coarsely adjusted by moving the movable sleeve 2 and adjusting the head 4. Then, the toothed rod 3 is slowly pressed down to bring the bridging rod block closer to the bone and finely adjust it. With the cooperation of the limiting gear 7 and the locking pin 8, the bridging rod block is finally tightly attached to the bone and then connected and fixed.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustment device for 3D printed bone fillers, comprising a base (1), characterized in that: A movable sleeve (2) is slidably provided on one side of the base (1). A gear (3) is slidably connected inside the movable sleeve (2). An adjustment box (5) is fixedly connected to one side of the movable sleeve (2). A gear (6) is rotatably connected inside the adjustment box (5). The outer surface of the gear (6) meshes with one side of the gear (3). A limiting gear (7) is fixedly connected to one end of the gear (6). A locking pin (8) is movably inserted at the top of the adjustment box (5) and at the position of the limiting gear (7). The bottom end of the locking pin (8) is inserted into the outer surface of the limiting gear (7). An adjustment head (4) is slidably inserted inside the gear (3). A clamping mechanism is provided inside the adjustment head (4).

2. The adjustment device for 3D printed bone filler according to claim 1, characterized in that: The clamping mechanism includes a bidirectional lead screw (10) rotatably connected inside the adjusting head (4). Two clamping frames (11) are threadedly connected to the outer surface of the bidirectional lead screw (10). One end of the two clamping frames (11) is slidably connected to the inside of the adjusting head (4). A square through hole (12) is opened through one side of each of the two clamping frames (11). A first fixing bolt (13) is inserted into the two square through holes (12). A stop block (14) is threadedly connected to one end of each of the two first fixing bolts (13). The outer surfaces of the two stop blocks (14) are tightly fitted to the outer surfaces of the two clamping frames (11).

3. The adjustment device for 3D printed bone filler according to claim 2, characterized in that: One end of the bidirectional lead screw (10) passes through the inner side wall of the adjusting head (4) and is fixedly connected to a polygonal connecting column (21). A fixing sleeve (22) is slidably connected to the outer surface of the polygonal connecting column (21). A fixing seat (20) is inserted into one end of the fixing sleeve (22). One end of the fixing seat (20) is fixedly connected to one end of the adjusting head (4).

4. The adjustment device for 3D printed bone filler according to claim 3, characterized in that: One end of the polygonal connecting column (21) is fixedly connected to a baffle (23), and one end of the fixing sleeve (22) is interference-fitted with the inside of the fixing seat (20).

5. An adjustment device for 3D printed bone fillers according to claim 1, characterized in that: The base (1) has a groove (15) on one side, and a slider (16) is fixedly connected to one side of the movable sleeve (2). The outer surface of the slider (16) is slidably connected to the inner surface of the groove (15).

6. The adjustment device for 3D printed bone filler according to claim 1, characterized in that: A positioning block (18) is fixedly connected to one side of the movable sleeve (2), and a positioning plate (17) is fixedly connected to the top of the base (1) near the edge. A positioning pin (19) is inserted inside the positioning block (18), and one end of the positioning pin (19) is inserted into the positioning plate (17).

7. An adjustment device for 3D printed bone fillers according to claim 1, characterized in that: The top of the rack (3) is threaded with a second fixing bolt (24), the bottom end of the second fixing bolt (24) passes through the top of the rack (3) and abuts against the outer surface of the adjusting head (4), and a pressure spring (9) is fixedly connected to the outer surface of the locking pin (8), and the other end of the pressure spring (9) abuts against the top surface inside the adjusting box (5).

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