Bone cutting device for spinal endoscopic surgery

Abstract

This invention provides a bone cutting device for spinal endoscopic surgery, relating to the field of bone cutting. It includes a cutting assembly, a vibration damping assembly, and a heat dissipation assembly. In the cutting assembly, multiple serrated blades slide circumferentially in mounting grooves on the periphery of the cutting cylinder. In the vibration damping assembly, multiple springs and retainers are equidistantly arranged circumferentially on the periphery of the cutting cylinder, with a telescopic component housed within the springs. In the heat dissipation assembly, condenser tubes are symmetrically arranged on both sides of the drive motor, and heat dissipation grooves and heat-conducting plates are symmetrically arranged on both sides of the drive motor. This invention utilizes a multi-segment composite structure of serrated blades to adjust the cutting angle according to bone tissue characteristics, rapidly breaking through bone while precisely correcting the bone cut surface. The circumferentially arranged vibration damping assembly of the cutting assembly counteracts vibrations generated during bone cutting. Furthermore, a microchannel is provided inside the cutting assembly for active heat dissipation via circulating coolant. A suction cup at the bottom of the handheld column can pick up the shredded bone, effectively improving cutting effect and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bone cutting, specifically to a bone cutting device for spinal endoscopic surgery. Background Technology

[0002] In orthopedic surgery, bone cutting devices are essential medical instruments used to precisely cut bone for repair or reconstruction. With the development of medical technology, traditional bone cutting tools such as manual bone drills and bone saws have gradually become unable to meet the requirements of modern surgery for precision, safety, and efficiency.

[0003] Traditional manual circumferential saws or bone drills rely on the surgeon's physical strength, resulting in long operation times and high labor intensity. This is especially true in minimally invasive surgery, where limited operating space increases the difficulty of the procedure. High-speed rotating electric bone saws lack over-torque protection mechanisms, making them prone to blade breakage due to uneven bone hardness or improper operation. Some electric bone cutting devices cannot adjust cutting parameters according to bone tissue characteristics (such as subchondral bone cysts), leading to poor cutting results. Vibrations generated during bone cutting affect the stability of the surgeon's operation. Traditional circular saw teeth cut at a fixed angle, resulting in low cutting efficiency and a tendency to jam bone, especially in cancellous or sclerotic bone. The rapid heat generation from friction of the metal saw blade and insufficient heat dissipation lead to localized high temperatures and can cause thermal necrosis of bone tissue. Therefore, it is necessary to propose a bone cutting device for spinal endoscopic surgery. Utility Model Content

[0004] To address the shortcomings of the existing technology, the present invention aims to provide a bone cutting device for spinal endoscopic surgery. This device utilizes a multi-segment composite serrated blade structure to adjust the cutting angle according to bone tissue characteristics, rapidly breaking through bone while precisely correcting the bone cut surface. A circumferentially arranged vibration damping component on the cutting assembly counteracts vibrations generated during bone cutting. Furthermore, a microchannel is incorporated within the cutting assembly for active heat dissipation via circulating coolant. A suction cup at the bottom of the handheld column can pick up the shredded bone, effectively improving cutting results and efficiency.

[0005] Specifically, this utility model provides a bone cutting device for spinal endoscopic surgery, comprising a cutting assembly, a vibration damping assembly, and a heat dissipation assembly. The cutting assembly includes a serrated blade, a top cover, a cutting cylinder, a drive shaft, and a drive motor. Multiple serrated blades are slidably disposed in mounting grooves on the periphery of the cutting cylinder, with the tips of the serrated blades extending from the mounting grooves of the top cover and being limited by the top cover. The bottom end of the top cover is embedded in the cutting cylinder. The first end of the drive shaft is engaged with the bottom end of the cutting cylinder, and the drive motor is connected to the second end of the drive shaft via a coupling. The vibration damping assembly includes springs, a telescopic component, a first rotating component, a second rotating component, and a retaining seat. Multiple springs and retaining seats are equidistantly disposed on the periphery of the cutting cylinder, and the telescopic component is disposed on... Inside the spring, the two ends of the telescopic member are respectively connected to the fixed ends of the first rotating member and the second rotating member. The rotating ends of the first rotating member and the second rotating member are respectively rotatably connected to the card seats on both sides. The heat dissipation assembly includes a first condenser pipe, a heat-conducting plate, a heat-conducting cylinder, a heat dissipation groove, and a second condenser pipe. The first ends of the first condenser pipe and the second condenser pipe are respectively located at the bottom end of the drive motor, and the first condenser pipe and the second condenser pipe are symmetrically arranged on both sides of the drive motor. The heat dissipation groove and the heat-conducting plate are symmetrically arranged on both sides of the drive motor. The second ends of the first condenser pipe and the second condenser pipe are connected to the heat dissipation groove. The heat-conducting plate is located above the heat dissipation groove. The heat dissipation plate is connected to the bottom end of the heat-conducting column through a cooling plate.

[0006] Preferably, the top of the serrated blade is provided with a front cutting edge at an angle of 20° to 30° to the vertical axis and a rear cutting edge at an angle of 5° to 10° to the vertical axis.

[0007] Preferably, the top cover is threadedly connected to the cutting cylinder through a central limiting groove.

[0008] Preferably, a handheld column is provided outside the drive motor.

[0009] Preferably, the surface of the handheld column is provided with anti-slip texture, and the handheld column is provided with a switch button and a heat dissipation circulation button.

[0010] Preferably, a sealing gasket is provided between the handheld column and the drive shaft.

[0011] Preferably, a suction cup is provided at the bottom of the handheld column.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention relates to a bone cutting device for spinal endoscopic surgery. Through a multi-segment composite structure of serrated blades, the cutting angle is adjusted according to the characteristics of bone tissue, which can quickly break through the bone while precisely correcting the bone cut surface. The vibration damping component set around the cutting assembly can offset the vibration generated during bone cutting. The microchannel set inside the cutting assembly can actively dissipate heat through circulating coolant. The suction cup at the bottom of the handheld column can pick up the cut bone fragments, effectively improving the cutting effect and efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the bone cutting device for spinal endoscopic surgery according to this utility model. Figure 2 This is a cross-sectional schematic diagram of the bone cutting device for spinal endoscopic surgery according to this utility model. Figure 3 This is a schematic diagram of the cutting component in this utility model; Figure 4 This is a schematic diagram of the serrated blade structure of the cutting component in this utility model; Figure 5 This is a schematic diagram of the vibration damping component in this utility model; Figure 6 This is a schematic diagram of the structure of the vibration damping component in this utility model, showing the cooperation between the spring and the rotating part. Figure 7 This is a schematic diagram of the heat dissipation component in this utility model.

[0014] Key reference numerals: 1. Cutting assembly; 11. Serrated blade; 111. Front blade; 112. Rear blade; 12. Top cover; 13. Cutting cylinder; 131. Mounting slot; 14. Drive shaft; 15. Drive motor; 16. Handheld column; 2. Vibration damping assembly; 21. Spring; 22. Telescopic component; 23. First rotating component; 24. Second rotating component; 25. Card holder; 3. Heat dissipation assembly; 31. First condenser tube; 32. Heat-conducting plate; 33. Heat-conducting cylinder; 34. Heat dissipation groove; 35. Second condenser tube; 36. Sealing gasket. Detailed Implementation

[0015] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0016] This invention relates to a bone cutting device for spinal endoscopic surgery, such as... Figure 1 and Figure 3 As shown, it includes a cutting assembly 1, a vibration damping assembly 2, and a heat dissipation assembly 3. The cutting assembly 1 includes a serrated blade 11, a top cover 12, a cutting cylinder 13, a drive shaft 14, and a drive motor 15. Multiple serrated blades 11 are slidably arranged in the mounting groove 131 on the periphery of the cutting cylinder 13, and the top of the serrated blade 11 extends out from the mounting groove of the top cover 12 and is limited by the top cover 12. The bottom end of the top cover 12 is embedded in the cutting cylinder 13, and the top cover 12 is threadedly connected to the cutting cylinder 13 through its central limiting groove. The first end of the drive shaft 14 is engaged with the bottom end of the cutting cylinder 13. The drive motor 15 is connected to the second end of the drive shaft 14 through a coupling. A handheld post 16 is provided outside the drive motor 15. The surface of the handheld post 16 is provided with anti-slip texture, and the handheld post 16 is provided with a switch button and a heat dissipation circulation button.

[0017] like Figure 4As shown, the top of the serrated blade 11 is provided with a front cutting edge 111 at an angle of 20° to 30° with the vertical axis and a rear cutting edge 112 at an angle of 5° to 10° with the vertical axis.

[0018] like Figure 5 and Figure 6 As shown, the vibration damping assembly 2 includes a spring 21, a telescopic member 22, a first rotating member 23, a second rotating member 24, and a retainer 25. Multiple springs 21 and retainers 25 are equidistantly arranged around the cutting cylinder 13. The telescopic member 22 is disposed inside the spring 21. Both ends of the telescopic member 22 are respectively connected to the fixed ends of the first rotating member 23 and the second rotating member 24. The rotating ends of the first rotating member 23 and the second rotating member 24 are respectively rotatably connected to the retainers 25 on both sides. like Figure 2 and Figure 7 As shown, the heat dissipation assembly 3 includes a first condenser pipe 31, a heat-conducting plate 32, a heat-conducting cylinder 33, a heat dissipation groove 34, and a second condenser pipe 35. The first ends of the first condenser pipe 31 and the second condenser pipe 35 are located at the bottom of the drive motor 15, and the first condenser pipe 31 and the second condenser pipe 35 are symmetrically arranged on both sides of the drive motor 15. The heat dissipation groove 34 and the heat-conducting plate 32 are symmetrically arranged on both sides of the drive motor 15. The second ends of the first condenser pipe 31 and the second condenser pipe 35 are connected to the heat dissipation groove 34. The heat-conducting plate 32 is located above the heat dissipation groove 34. The heat dissipation plate 32 is connected to the bottom end of the heat-conducting cylinder 33 through a cooling plate. A sealing gasket 36 is provided between the handheld column 16 and the drive shaft 14.

[0019] The bone cutting device for spinal endoscopic surgery according to this invention will be further described below with reference to embodiments: This device is suitable for cutting cortical bone, cancellous bone, and mixed bone. First, the operator presses the switch button on the handheld column 16. The drive motor 15 drives the transmission shaft 14 to rotate through the coupling. Then, the top cover 12 and the cutting cylinder 13 connected to the transmission shaft 14 rotate, thereby driving the serrated blade 11, which is set in the mounting groove 131 of the cutting cylinder 13, to rotate around the center of the top cover 12. During the bone cutting process, the serrated blade 11 is divided into a front section and a rear section. The front section is the area where the front edge 111 of the serrated blade 11 first contacts the bone tissue. It is located at the front end of the rotation direction of the serrated blade 11, that is, the side where the saw blade cuts into the bone. The front blade 111 uses a large angle of 20°~30° to quickly break through the cortical bone and reduce the initial cutting resistance. The rear serration is the area where the serrated blade 11 continues to cut after it has made its entry. It is located at the rear end of the rotation direction of the serrated blade 11, which is the continuation of the cutting path. The rear blade 112 uses a small angle of 5°~10° to finely trim the cut surface and reduce bone fragments and thermal damage.

[0020] Then, the vibration generated during bone cutting can be eliminated by the vibration damping component 2. The vibration generated during bone cutting is transmitted to the vibration damping component 2 through the heat conduction cylinder 33. The vibration can be actively absorbed by the cooperation between the circumferentially arranged spring 21, the telescopic rod 22 and the rotating part, so that the vibration will not be transmitted to the handheld column 16.

[0021] Finally, the cooling channels in the heat dissipation component 3 and the suction of shredded bone are utilized: microchannels are designed inside the saw blade, and active heat dissipation is achieved through circulating coolant (such as saline solution) to avoid thermal damage. Furthermore, a support column 16 is installed inside, and a circulating condenser pipe is installed in the gap between the support column and the ring saw. A suction cup is located at the bottom of the handheld column 16 to pick up the shredded bone.

[0022] This utility model relates to a bone cutting device for spinal endoscopic surgery. Through the multi-segment composite structure of the serrated blade 11, the cutting angle is adjusted according to the characteristics of bone tissue, which can quickly break the bone while precisely correcting the bone cut surface. The vibration damping component 2 arranged circumferentially on the cutting component 1 can offset the vibration generated during bone cutting. A microchannel is set inside the cutting component 1, and active heat dissipation is achieved through circulating coolant. The suction cup at the bottom of the handheld column 16 can pick up the cut bone fragments, which can effectively improve the cutting effect and efficiency.

[0023] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A bone cutting device for spinal endoscopic surgery, characterized in that: It includes cutting components, vibration damping components, and heat dissipation components; The cutting assembly includes a serrated blade, a top cover, a cutting cylinder, a drive shaft, and a drive motor. Multiple serrated blades are slidably mounted in the mounting grooves on the periphery of the cutting cylinder, and the top tips of the serrated blades extend from the mounting grooves of the top cover and are limited by the top cover. The bottom end of the top cover is embedded in the cutting cylinder. The first end of the drive shaft is engaged with the bottom end of the cutting cylinder, and the drive motor is connected to the second end of the drive shaft through a coupling. The vibration damping assembly includes a spring, a telescopic component, a first rotating component, a second rotating component, and a retaining seat. Multiple springs and retaining seats are equidistantly arranged around the periphery of the cutting cylinder. The telescopic component is located inside the spring. Both ends of the telescopic component are connected to the fixed ends of the first rotating component and the second rotating component, respectively. The rotating ends of the first rotating component and the second rotating component are rotatably connected to the retaining seats on both sides. The heat dissipation assembly includes a first condenser, a heat-conducting plate, a heat-conducting cylinder, a heat dissipation groove, and a second condenser. The first end of each of the first and second condensers is located at the bottom of the drive motor, and the first and second condensers are symmetrically arranged on both sides of the drive motor. The heat dissipation groove and the heat-conducting plate are also symmetrically arranged on both sides of the drive motor. The second end of each of the first and second condensers is connected to the heat dissipation groove. The heat-conducting plate is located above the heat dissipation groove and is connected to the bottom of the heat-conducting column through a cooling plate.

2. The bone cutting device for spinal endoscopic surgery according to claim 1, characterized in that: The top of the serrated blade is provided with a front cutting edge at an angle of 20° to 30° to the vertical axis and a rear cutting edge at an angle of 5° to 10° to the vertical axis.

3. The bone cutting device for spinal endoscopic surgery according to claim 1, characterized in that: The top cover is threadedly connected to the cutting cylinder through a central limiting groove.

4. The bone cutting device for spinal endoscopic surgery according to claim 1, characterized in that: A handheld column is installed outside the drive motor.

5. The bone cutting device for spinal endoscopic surgery according to claim 4, characterized in that: The surface of the handheld column has an anti-slip texture, and the handheld column is equipped with a switch button and a heat dissipation and circulation button.

6. The bone cutting device for spinal endoscopic surgery according to claim 4, characterized in that: A sealing gasket is provided between the handheld column and the drive shaft.

7. The bone cutting device for spinal endoscopic surgery according to claim 4, characterized in that: The bottom of the handheld column is equipped with a suction cup.

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