Adjustable spinal osteotomy device

Abstract

The present invention discloses an adjustable spinal osteotomy device, comprising two power distribution boxes, the two power distribution boxes being rotatably connected at their adjacent ends. A second drive rod is rotatably mounted on the bottom of one of the power distribution boxes, a handle rod being disposed below the second drive rod. A first drive mechanism is mounted within both power distribution boxes. A mounting rod is mounted at the bottom of the handle rod, and a plurality of blades are rotatably mounted at the bottom end of the mounting rod. A second drive mechanism is disposed at the bottom end of the handle rod, and a recovery mechanism for collecting bone debris is disposed on the outer wall of the handle rod. In this invention, before the multiple blades are used, the second drive mechanism disposed at the bottom end of the handle rod can be used to gradually adjust the spread angles between the multiple blades, thereby adapting to the bone grinding needs of different patients, reducing the workload of the surgeon, and also lowering the surgical risk and time for the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an adjustable spinal osteotomy device. Background Art

[0002] Kyphosis, commonly known as hunchback or hunchback, is a common clinical condition. Causes include congenital, degenerative, ankylosing spondylitis, and chronic tuberculous kyphosis. A V-shaped cervical pedicle osteotomy (PSO) is commonly performed. This involves resection of the posterior lamina and pedicles, followed by a V-shaped resection of the anterior vertebral body. This posterior closure achieves bony contact between the anterior and middle columns, making it a closed osteotomy. PSO shortens not only the posterior column but also the anterior and middle columns. This shortening osteotomy allows for bone contact between the anterior and middle columns, improving spinal stability and increasing the rate of spinal fusion. However, if the osteotomy is performed at a higher site, excessive shortening of the posterior column can lead to spinal cord flexion and wrinkling, potentially leading to serious neurological complications. Given these characteristics, PSO is primarily suitable for angular curves located at lower locations and with significant vertebral deformity. It is best avoided for rigid, oblong curves.

[0003] In the prior art, PSO osteotomy surgery is performed clinically without suitable surgical instruments. The procedure is often performed based on a preoperative clinical assessment of the patient and the surgeon's experience during surgery, using osteotome cutters to chisel the bone. Conventional instruments are also used, which can easily cause nerve damage to the patient, making the surgery risky. Furthermore, the angle of the surgical instruments used for osteotomy cannot be adjusted based on the patient's condition, which prolongs the surgery and increases the surgeon's workload. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to provide an adjustable spinal osteotomy device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An adjustable spinal osteotomy device includes two power distribution boxes, which are rotatably connected at one end thereof. A second drive rod is rotatably installed at the bottom of one of the power distribution boxes, and a handle rod is provided below the second drive rod. A first drive mechanism for driving the handle rod to rotate is commonly installed inside the two power distribution boxes, a mounting rod is installed at the bottom of the handle rod, and a plurality of blades are rotatably installed at the bottom end of the mounting rod. A second drive mechanism for driving the plurality of blades to adjust their rotation angles is provided at the bottom end of the handle rod, and a recovery mechanism for collecting some bone fragments is provided on the outer wall of the handle rod.

[0007] Optionally, the first driving mechanism includes a first rotating shaft and a second rotating shaft rotatably installed inside two power distribution boxes, one end of the first rotating shaft is inserted inside the second rotating shaft, and one of the power distribution boxes has two internal threads installed on it for limiting the rotation between the first rotating shaft and the second rotating shaft.

[0008] Optionally, a first bevel gear and a second bevel gear are respectively installed on the outer walls of the ends away from the first rotating shaft and the second rotating shaft, a power transmission cylinder is installed on the top of one of the power distribution boxes, a first driving rod is rotatably installed inside the power transmission cylinder, a rotating handle is installed on the top of the first driving rod, and the bottom end of the first driving rod extends to the interior of one of the power distribution boxes and is installed with a third bevel gear meshing with the first bevel gear.

[0009] Optionally, a fourth bevel gear is installed at the top end of the second driving rod, and the fourth bevel gear is engaged with the second bevel gear. The top end of the tool handle rod is provided with a first threaded connection part, and the first threaded connection part is threadedly connected to the bottom end of the second driving rod.

[0010] Optionally, the second driving mechanism includes a movable sleeve slidably mounted on the outer wall of the mounting rod, and a plurality of connecting rods are rotatably mounted on the outer wall of the movable sleeve, and the ends of the plurality of connecting rods away from the movable sleeve are rotatably connected to their corresponding blades.

[0011] Optionally, the bottom end of the tool handle rod is installed with two cams through the rotation of the rotating rod, and a second threaded connection part is provided at both ends of the rotating rod. A fixing frame is installed on the outer wall of the bottom end of the tool handle rod, and the two second threaded connection parts are respectively threaded through both sides of the fixing frame and are installed with fastening nuts.

[0012] Optionally, two vertical plates are symmetrically installed at the bottom end of the handle rod, and through grooves are opened inside the two vertical plates. The outer wall of the movable sleeve is installed with two support rods that slide up and down in the through grooves.

[0013] Optionally, a transverse plate is installed on the top end of the two support rods, and the top ends of the two transverse plates are respectively located and abut against the outer walls of the two cams.

[0014] Optionally, the recovery mechanism includes a transparent sleeve, two connecting sleeves are installed on the inner wall of the transparent sleeve, the handle rod is rotatably connected to the two connecting sleeves, and a protective sleeve is slidably installed on the outer wall of the transparent sleeve.

[0015] Optionally, the outer wall of the handle rod is provided with a spiral groove, the bottom end of the transparent sleeve is installed with a conical rubber sleeve, the top end of the rubber sleeve is in contact with the outer wall of the handle rod, and two cover plates are rotatably installed on the top of the transparent sleeve.

[0016] The beneficial effects of the present invention are:

[0017] 1. In this invention, before the multiple blades are used, the second driving mechanism provided at the bottom end of the handle rod can be used to gradually adjust the deployment angles between the multiple blades, thereby adapting to the bone grinding needs of different patients, reducing the workload of doctors, and reducing the surgical risks and operation time of patients.

[0018] 2. In this invention, when the device is used to grind and remove the patient's bones, the two fastening bolts are manually screwed so that the two fastening bolts, which are close to each other, are moved and extended in a direction away from the second rotating shaft. The other power distribution box is manually rotated to drive the second drive rod and the knife handle rod below it to rotate and adjust, so that the inclination angle of multiple blades in use can be freely controlled and adjusted according to needs, which can improve the efficiency and safety of bone grinding.

[0019] 3. In this invention, the protective cover arranged on the outer wall of the transparent cover can protect multiple blades during use, making it difficult for the multiple blades to come into contact with the surrounding bones or bone nerves that do not need to be polished, thereby improving safety during surgery. The protective cover can move up and down the outer wall of the transparent cover to adapt to the use requirements of multiple blades entering different depths inside the bone during operation.

[0020] 4. In this invention, a spiral groove is provided on the outer wall of the knife handle rod. Some bone debris generated by multiple blades grinding bones can be transported upward along the groove, so that some bone debris can enter the interior of the transparent sleeve for collection, which is convenient for the subsequent unified collection of bone debris. After the operation on the patient is completed, the knife handle rod can be removed from the bottom end of the second driving rod, and the two covers can be rotated open to facilitate the bone debris collected inside the transparent sleeve to be poured out for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of an adjustable spinal osteotomy device proposed by the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the two power distribution boxes and the interior of the transparent cover;

[0024] Figure 3 Schematic diagram of the structure of the first driving mechanism in the present invention;

[0025] Figure 4 Schematic diagram of the structure of the tool handle rod in the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the present invention with two cover plates opened;

[0027] Figure 6 It is a schematic structural diagram of multiple blades in the present invention;

[0028] Figure 7 It is a structural diagram of the movable sleeve and the horizontal plate in the present invention;

[0029] Figure 8 It is a schematic diagram of the structure in which the two cams are separated from the tool handle rod in the present invention.

[0030] In the figure: 1. power distribution box; 2. power transmission cylinder; 3. first drive rod; 4. rotating handle; 5. fastening bolt; 6. second drive rod; 7. knife handle rod; 8. transparent cover; 9. protective cover; 10. blade; 11. third bevel gear; 12. first bevel gear; 13. second bevel gear; 14. fourth bevel gear; 15. first rotating shaft; 16. second rotating shaft; 17. groove; 18. first threaded connection; 19. rubber sleeve; 20. fixed frame; 21. cam; 22. movable sleeve; 23. connecting rod; 24. vertical plate; 25. support rod; 26. horizontal plate; 27. fastening nut; 28. second threaded connection; 29. ​​mounting rod; 30. through groove; 31. connecting sleeve; 32. cover plate. DETAILED DESCRIPTION

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] Reference Figures 1-8 An adjustable spinal osteotomy device includes two power distribution boxes 1, rotatably connected at their adjacent ends. A second drive rod 6 is rotatably mounted on the bottom of one of the power distribution boxes 1, and a handle rod 7 is disposed below the second drive rod 6. Both power distribution boxes 1 contain a first drive mechanism for rotating the handle rod 7. A mounting rod 29 is mounted on the bottom of the handle rod 7, and multiple blades 10 are rotatably mounted on the bottom end of the mounting rod 29. A second drive mechanism for adjusting the rotation angle of the blades 10 is disposed at the bottom end of the handle rod 7. A recovery mechanism for collecting bone debris is disposed on the outer wall of the handle rod 7. In this embodiment, the multiple blades 10 cooperate with each other to form a tapered shape. After the handle rod 7 drives the multiple blades 10 to rotate and grind and remove bone, the bone gap forms a V-shape, effectively improving the patient's spinal fusion rate and making the spine more stable.

[0033] As a technical optimization solution of the present invention, the first drive mechanism includes a first rotating shaft 15 and a second rotating shaft 16 rotatably mounted inside two power distribution boxes 1. One end of the first rotating shaft 15 is inserted into the interior of the second rotating shaft 16. Two fastening bolts 5 for limiting the rotation between the first rotating shaft 15 and the second rotating shaft 16 are threadedly mounted on the interior of one of the power distribution boxes 1. The first rotating shaft 15 is inserted into the interior of the second rotating shaft 16, allowing relative rotation between the first rotating shaft 15 and the second rotating shaft 16. Tightening the two fastening bolts 5 causes the adjacent ends of the two fastening bolts 5 to extend into the interior of the second rotating shaft 16, thereby limiting and fixing the first rotating shaft 15, allowing the first rotating shaft 15 to rotate while driving the second rotating shaft 16 to rotate together.

[0034] As a technical optimization solution of the present invention, the outer walls of the ends away from the first rotating shaft 15 and the second rotating shaft 16 are respectively installed with a first bevel gear 12 and a second bevel gear 13, a power transmission cylinder 2 is installed at the top of one of the power distribution boxes 1, a first driving rod 3 is rotatably installed inside the power transmission cylinder 2, a rotating handle 4 is installed at the top of the first driving rod 3, and the bottom end of the first driving rod 3 extends to the interior of one of the power distribution boxes 1, where a third bevel gear 11 meshing with the first bevel gear 12 is installed. By rotating the rotating handle 4, the first driving rod 3 and the third bevel gear 11 are driven to rotate, so that the first bevel gear 12 meshing with the third bevel gear 11 drives the first rotating shaft 15 and the second rotating shaft 16 to rotate together.

[0035] As a technical optimization solution of the present invention, a fourth bevel gear 14 is installed at the top of the second drive rod 6, and the fourth bevel gear 14 is meshed with the second bevel gear 13. The top of the handle rod 7 is provided with a first threaded connection portion 18, and the first threaded connection portion 18 is threadedly connected to the bottom end of the second drive rod 6. When the second rotating shaft 16 drives the second bevel gear 13 to rotate, it can also drive the fourth bevel gear 14 meshed with the second bevel gear 13 and the second drive rod 6 to rotate together, and drive the handle rod 7 below to rotate, thereby achieving the effect of controlling the rotation of the handle rod 7; and the handle rod 7 and the second drive rod 6 are threadedly connected by the first threaded connection portion 18, so that the handle rod 7 can be removed after use.

[0036] As a technical optimization solution of the present invention, the second drive mechanism includes a movable sleeve 22 slidably mounted on the outer wall of the mounting rod 29. The outer wall of the movable sleeve 22 is rotatably mounted with multiple connecting rods 23. The ends of the multiple connecting rods 23 away from the movable sleeve 22 are respectively rotatably connected to their corresponding blades 10. The movable sleeve 22 slides up and down on the outer wall of the mounting rod 29, and can use the multiple connecting rods 23 to push the multiple blades 10 to rotate toward or away from the mounting rod 29, thereby achieving the effect of controlling the deployment angle of the multiple blades 10.

[0037] As a technical optimization solution of the present invention, two cams 21 are rotatably mounted on the bottom end of the handle rod 7 via a rotating rod. A second threaded connection portion 28 is provided at each end of the rotating rod. A fixing frame 20 is mounted on the outer wall of the bottom end of the handle rod 7. The two second threaded connection portions 28 pass through the two sides of the fixing frame 20 and are threadedly mounted with fastening nuts 27. Rotating the rotating rod drives the two cams 21 to rotate together on the outside of the handle rod 7. After the cams 21 rotate to the appropriate position, the two fastening nuts 27 can be used to limit and fix the rotating rod, thereby fixing the position of the cams 21.

[0038] As a technical optimization solution of the present invention, two vertical plates 24 are symmetrically mounted on the bottom end of the handle rod 7. Both vertical plates 24 have through slots 30 formed therein. Two support rods 25 are mounted on the outer wall of the movable sleeve 22, and slide up and down within the through slots 30. The two support rods 25 move up and down within the through slots 30, providing guidance for the up and down movement of the movable sleeve 22.

[0039] As a technical optimization solution of the present invention, a cross plate 26 is installed at the top of each of the two support rods 25. The top ends of the two cross plates 26 are respectively located at the outer walls of the two cams 21 and abut against each other. By rotating the rotating rod to drive the two cams 21 downward, the two cross plates 26 below can be pushed, so that the two cross plates 26 drive the two support rods 25 and the movable sleeve 22 to move downward together. After the rotating rod is fixed with two fastening nuts 27, the two cams 21 can limit the upward movement of the cross plates 26, ensuring that the angles of the multiple blades 10 do not change during use.

[0040] As a technical optimization solution of the present invention, the recovery mechanism includes a transparent sleeve 8, the inner wall of which is mounted two connecting sleeves 31, the handle rod 7 being rotatably connected to the two connecting sleeves 31, and the outer wall of the transparent sleeve 8 being slidably mounted with a protective sleeve 9. The protective sleeve 9 surrounds the blade 10 and protects the blade 10 during use, preventing the blade 10 from contacting surrounding bones or bone nerves that do not require grinding, thereby improving safety during surgery. The protective sleeve 9 can move up and down the surface of the transparent sleeve 8 to accommodate the blade 10's need to penetrate different depths into the bone during operation.

[0041] As a technical optimization solution of the present invention, the outer wall of the handle rod 7 is provided with a spiral groove 17, and the bottom end of the transparent sleeve 8 is installed with a tapered rubber sleeve 19. The top end of the rubber sleeve 19 abuts the outer wall of the handle rod 7. Two cover plates 32 are rotatably installed on the top of the transparent sleeve 8. The handle rod 7 drives the multiple blades 10 to rotate, and the multiple blades 10 can grind and remove the vertebrae. Some bone debris generated by grinding can be transported upward along the spiral groove 17 on the outer wall of the handle rod 7, pushing the rubber sleeve 19, so that some bone debris can enter the interior of the transparent sleeve 8 for collection, facilitating the subsequent unified collection and reuse of the bone debris.

[0042] In the present invention, when the user uses the device, the first driving rod 3 and the third bevel gear 11 are driven to rotate by rotating the rotating handle 4, so that the first bevel gear 12 meshing with the third bevel gear 11 drives the first rotating shaft 15 and the second rotating shaft 16 to rotate together. When the second rotating shaft 16 drives the second bevel gear 13 to rotate, it can drive the fourth bevel gear 14 meshing with the second bevel gear 13 and the second driving rod 6 to rotate together, and drive the handle rod 7 below to rotate, so as to achieve the effect of controlling the synchronous rotation of the handle rod 7 and the multiple blades 10 at the bottom thereof, so that the rotating multiple blades 10 can grind and remove the bone to be ground, and the notches ground by the multiple blades 10 are V-shaped.

[0043] At the same time, before the multiple blades 10 are used, the two cams 21 can be driven to rotate downward by a certain angle by manually rotating the rotating rod, which can push the two horizontal plates 26 below, so that the two horizontal plates 26 drive the two support rods 25 and the movable sleeve 22 to move downward together. After the rotating rod is limited and fixed by the two fastening nuts 27, the two cams 21 can limit the upward movement of the horizontal plates 26, and limit the upward movement of the movable sleeve 22 on the outer wall of the mounting rod 29, ensuring that the multiple blades 10 will not automatically rotate toward the direction close to the mounting rod 29 when in use; and through When controlling the rotating rod to drive the cam 21 to rotate downward and controlling the downward movement distance of the horizontal plate 26 and the movable sleeve 22 below, the rotating rod can be controlled to drive the two cams 21 to rotate downward by a smaller angle, so as to drive the angle adjustment range between the multiple blades 10 to be smaller. After the multiple blades 10 grind a part of the bone, the blades 10 are taken out, and the rotating rod is continued to be controlled to drive the two cams 21 to rotate downward, so that the rotation angle of the two cams 21 increases, thereby driving the angle adjustment range between the multiple blades 10 to gradually increase. The bone is ground and adjusted multiple times to reach the final preset angle, which can adapt to the use requirements of different bone grinding.

[0044] During use, the two fastening bolts 5 are manually screwed so that the ends of the two fastening bolts 5 that are close to each other move and extend in the direction away from the second rotating shaft 16. At this time, the restriction between the first rotating shaft 15 and the second rotating shaft 16 is lost, and the other power distribution box 1 can be manually rotated to drive the second drive rod 6 and the handle rod 7 below it to rotate and adjust, so that the inclination angle of the multiple blades 10 in use can be freely controlled and adjusted according to needs, which can improve the efficiency and safety of bone grinding.

[0045] The protective cover 9 arranged on the outer wall of the transparent cover 8 can protect the multiple blades 10 during use, making it difficult for the multiple blades 10 to come into contact with the surrounding bones or bone nerves that do not need to be polished, which can improve the safety during surgery. The protective cover 9 can move up and down the outer wall of the transparent cover 8 to adapt to the use requirements of the multiple blades 10 entering different depths inside the bone during operation.

[0046] Since the outer wall of the handle rod 7 is provided with a spiral groove 17, some bone debris generated by multiple blades 10 grinding bones can be transported upward along the spiral groove 17 on the outer wall of the handle rod 7, and when transported to the position of the rubber sleeve 19, the rubber sleeve 19 can be pushed, so that some bone debris can enter the interior of the transparent sleeve 8 for collection, which is convenient for the subsequent unified collection of bone debris.

[0047] After the operation on the patient is completed, the handle rod 7 can be removed from the bottom end of the second driving rod 6, and the two cover plates 32 on the top of the transparent cover 8 can be rotated upward to open it, so that the bone debris collected inside the transparent cover 8 can be poured out for reuse.

[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable spinal osteotomy device, comprising two power distribution boxes (1), characterized in that: The two power distribution boxes (1) are rotatably connected at one end thereof, a second driving rod (6) is rotatably mounted on the bottom of one of the power distribution boxes (1), a knife handle rod (7) is provided below the second driving rod (6), a first driving mechanism for driving the knife handle rod (7) to rotate is commonly installed inside the two power distribution boxes (1), a mounting rod (29) is installed at the bottom of the knife handle rod (7), a plurality of blades (10) are rotatably mounted at the bottom end of the mounting rod (29), a second driving mechanism for driving the plurality of blades (10) to adjust their rotation angles is provided at the bottom end of the knife handle rod (7), and a recovery mechanism for collecting part of the bone debris is provided on the outer wall of the knife handle rod (7); The second driving mechanism comprises a movable sleeve (22) slidably mounted on the outer wall of the mounting rod (29), a plurality of connecting rods (23) being rotatably mounted on the outer wall of the movable sleeve (22), and the ends of the plurality of connecting rods (23) away from the movable sleeve (22) are rotatably connected to the blades (10) corresponding thereto. The bottom end of the handle rod (7) is rotatably mounted with two cams (21), and both ends of the rotating rod are provided with second threaded connection parts (28). A fixing frame (20) is mounted on the outer wall of the bottom end of the handle rod (7), and the two second threaded connection parts (28) are respectively threadedly mounted with fastening nuts (27) on both sides of the fixing frame (20). Two vertical plates (24) are symmetrically mounted on the bottom end of the handle rod (7), and a through slot (30) is provided inside the two vertical plates (24). Two support rods (25) that slide up and down in the through slot (30) are mounted on the outer wall of the movable sleeve (22); A transverse plate (26) is installed at the top end of each of the two support rods (25), and the top ends of the two transverse plates (26) respectively abut against the outer walls of the two cams (21).

2. The adjustable spinal osteotomy device according to claim 1, characterized in that: The first driving mechanism comprises a first rotating shaft (15) and a second rotating shaft (16) rotatably mounted inside two power distribution boxes (1), one end of the first rotating shaft (15) being inserted inside the second rotating shaft (16), and two fastening bolts (5) for limiting the rotation between the first rotating shaft (15) and the second rotating shaft (16) being installed on the internal thread of one of the power distribution boxes (1).

3. The adjustable spinal osteotomy device according to claim 2, characterized in that: A first bevel gear (12) and a second bevel gear (13) are respectively mounted on outer walls of ends away from the first rotating shaft (15) and the second rotating shaft (16); a power transmission cylinder (2) is mounted on the top end of one of the power distribution boxes (1); a first driving rod (3) is rotatably mounted inside the power transmission cylinder (2); a rotating handle (4) is mounted on the top end of the first driving rod (3); and a third bevel gear (11) meshing with the first bevel gear (12) is mounted on the bottom end of the first driving rod (3) extending to the inside of one of the power distribution boxes (1).

4. The adjustable spinal osteotomy device according to claim 3, characterized in that: A fourth bevel gear (14) is mounted on the top end of the second drive rod (6), and the fourth bevel gear (14) is meshed with the second bevel gear (13). A first threaded connection portion (18) is provided on the top end of the shank rod (7), and the first threaded connection portion (18) is threadedly connected to the bottom end of the second drive rod (6).

5. The adjustable spinal osteotomy device according to claim 1, characterized in that: The recovery mechanism comprises a transparent sleeve (8), the inner wall of the transparent sleeve (8) is provided with two connecting sleeves (31), the handle rod (7) is rotatably connected to the two connecting sleeves (31), and the outer wall of the transparent sleeve (8) is slidably provided with a protective sleeve (9).

6. The adjustable spinal osteotomy device according to claim 5, characterized in that: The outer wall of the handle rod (7) is provided with a spiral groove (17), the bottom end of the transparent sleeve (8) is installed with a conical rubber sleeve (19), the top end of the rubber sleeve (19) is in contact with the outer wall of the handle rod (7), and the top of the transparent sleeve (8) is rotatably installed with two cover plates (32).

Images