Multifunctional orthopedic saw special for orthopedic surgery

Abstract

The invention relates to a multifunctional orthopedic saw special for orthopedic surgery, and belongs to the technical field of orthopedic saws. Comprising a handheld shell and a saw blade, and a driving part and a drilling mechanism are arranged in the handheld shell; the driving part comprises a driving disc, a driving block and a driving gear set, a driving column is arranged on the driving disc, and the driving block and the driving gear set are connected through a driving rod and a driving gear; a clamping part is arranged on the driving gear set, and the saw blade is fixed on the driving gear set through the clamping part; a moving part is arranged on the handheld shell, the drilling mechanism comprises a moving shell and a drilling rod, the drilling rod is located in the moving shell, and the moving shell is fixedly connected with the moving part. According to the multifunctional orthopedic saw special for the orthopedic surgery, the sawing function and the drilling function are integrated, the surgery efficiency is improved, the tool replacement time is shortened, the accurate adjustment of the swing amplitude of the saw blade is achieved, the double-blade design and the chip containing groove of the saw blade are optimized, chip removal is facilitated, and the cutting efficiency is improved.

Description

Technical Field

[0001] The invention relates to a multifunctional orthopedic saw specially used for orthopedic surgery, belonging to the technical field of orthopedic saws. Background Art

[0002] Orthopedics is one of the most common departments in major hospitals. It mainly studies the anatomy, physiology and pathology of the skeletal muscle system, and uses drugs, surgery and physical methods to maintain and develop the normal form and function of this system. Surgery is the main treatment method in orthopedics, and bone saw is a commonly used medical device in orthopedic surgery.

[0003] The patent with patent number ZL202210908682.0 discloses an orthopedic medical electric swing saw, including a saw blade, a saw head system and a saw tail system. The saw head system includes a saw head frame, a power shaft is installed in the saw head frame, the saw blade is detachably installed on the power shaft, the power shaft is connected to a drive plate, the drive plate is provided with a drive hole, a transmission bevel gear is rotatably connected in the saw head frame, the transmission bevel gear is connected to the drive shaft, the drive shaft is located in the drive hole, the saw head frame is connected to an ear frame, a connecting shaft is rotatably connected in the ear frame, the connecting shaft is connected to the driving bevel gear meshing with the transmission bevel gear, a protective cover system and a saw tail system are installed on the saw head frame, and the saw head frame and the saw tail system are connected by a serpentine system.

[0004] However, other surgical operations such as drilling cannot be performed simultaneously during use, resulting in the need to frequently change tools during the operation, increasing the operation time and complexity. In addition, the saw blade swing amplitude lacks flexibility and cannot be precisely adjusted according to surgical requirements, thus affecting the accuracy and efficiency of the operation. Summary of the invention

[0005] The invention provides a multifunctional orthopedic saw specially used for orthopedic surgery, so as to solve the problems in the prior art that drilling cannot be achieved simultaneously and the swing amplitude of the saw blade cannot be adjusted.

[0006] The present invention provides a multifunctional orthopedic saw for orthopedic surgery, which comprises a handheld housing and a saw blade. The saw blade is located at one end of the handheld housing, and a driving part and a drilling mechanism corresponding to the saw blade are arranged in the handheld housing.

[0007] The driving part includes a driving disc, a driving block, and a driving gear set. The driving disc is provided with a driving column corresponding to the driving block. The driving block and the driving gear set are connected by a driving rod and a driving gear. The driving gear is located at one end of the driving rod and meshes with the driving gear set.

[0008] The driving gear set is provided with a clamping part corresponding to the saw blade, and the saw blade is fixed to the driving gear set through the clamping part;

[0009] The handheld housing is provided with a moving part corresponding to the drilling mechanism. The drilling mechanism includes a moving housing and a drill rod. The drill rod is located inside the moving housing and is connected to the moving housing through a telescopic rod. The moving housing and the moving part are fixedly connected.

[0010] Preferably, the driving rod is fixedly connected to the driving block, and the driving gear is located at an end of the driving rod away from the driving block.

[0011] Preferably, a support plate corresponding to the driving part is provided inside the handheld housing, a positioning column corresponding to the support plate is provided on the driving rod, and the positioning column is rotatably connected to the support plate.

[0012] Preferably, the driving gear set includes a first gear, a second gear, and a third gear, the first gear and the driving gear are meshed with each other, the driving gear is a large gear, the first gear is a small gear, and the first gear and the second gear are coaxially connected via a transmission shaft.

[0013] Preferably, the third gear is meshed with the second gear, and the clamping portion is located on the third gear and fixed to the saw blade.

[0014] Preferably, the moving part includes a fixed plate and a ball screw, the bottom of the moving shell is fixedly connected to the fixed plate by a snap and a magnetic attraction component, and the ball screw passes through the fixed plates and is connected by threads.

[0015] Preferably, the positioning column includes a positioning rod and a driving sleeve, the positioning rod is located inside the driving sleeve and fixedly connected to the driving disk, the driving sleeve is slidably connected to the driving disk, and a first airbag is provided between the driving sleeve and the positioning rod.

[0016] Preferably, the saw blade comprises a first blade and a second blade, wherein the first blade is located at the top of one end of the saw blade away from the handheld housing, and the second blade is located at one end of the first blade close to the handheld housing.

[0017] Preferably, the second blade is wedge-shaped, an angle is formed between the second blade and the first blade, and a chip groove is provided on the first blade.

[0018] Preferably, the saw blade is provided with an adjustment plate corresponding to the second blade, the adjustment plate and the second blade are connected by an adjustment connecting rod, both ends of the adjustment connecting rod are slidingly hinged with the adjustment plate and the second blade respectively, and a second airbag is provided between the second blade and the saw blade.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a multifunctional orthopedic saw for orthopedic surgery, which integrates sawing and drilling functions in one, significantly improves surgical efficiency, reduces the time for changing tools during surgery, and reduces the complexity of surgery. Doctors can quickly switch operating modes on the same tool, so as to focus more on the surgery itself, improve the safety and success rate of the surgery, and precisely and flexibly adjust the swing amplitude of the saw blade. Doctors can easily adjust the swing amplitude of the saw blade according to the specific needs of the surgery, so as to better adapt to the needs of bone cutting of different shapes, hardness and positions. It not only improves the accuracy of the surgery, but also helps to reduce damage to surrounding tissues. A unique double-blade design is adopted, in which the second blade is wedge-shaped and has an angle with the first blade, so that the saw blade can cut a wedge-shaped incision and achieve one-time molding without multiple sawing or adjusting the position of the saw blade. At the same time, the chip groove on the first blade helps to discharge the debris generated during the sawing process in time, reducing interference with the surgical process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a structural schematic diagram of a multifunctional orthopedic saw specially used for orthopedic surgery.

[0022] Figure 2 The present invention is a schematic diagram of the structure of a driving part of a multifunctional orthopedic saw specially used for orthopedic surgery.

[0023] Figure 3 The present invention is a schematic diagram of the structure of a driving column of a multifunctional orthopedic saw specially used for orthopedic surgery.

[0024] Figure 4 The present invention is a schematic diagram of the structure of a driving gear set of a multifunctional orthopedic saw specially used for orthopedic surgery.

[0025] Figure 5 The present invention is a schematic diagram of the saw blade structure of a multifunctional orthopedic saw specially used for orthopedic surgery.

[0026] Figure 6 The present invention is a schematic diagram of the cross-sectional structure of a saw blade of a multifunctional orthopedic saw specially used for orthopedic surgery.

[0027] In the figure: 1. handheld shell, 11. support plate, 2. saw blade, 21. first blade, 211. chip groove, 22. second blade, 23. adjustment plate, 231. adjustment connecting rod, 24. second air bag, 3. driving part, 31. driving disk, 311. driving column, 3111. positioning rod, 3112. driving sleeve, 3113. first air bag, 32. driving block, 33. driving rod, 331. positioning column, 34. driving gear, 35. driving gear set, 351. first gear, 352. second gear, 353. third gear, 4. drilling mechanism, 41. moving shell, 42. drilling rod, 43. telescopic rod, 5. moving part, 51. fixing plate, 52. ball screw. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] The present invention provides a multifunctional orthopedic saw for orthopedic surgery, which comprises a handheld housing 1 and a saw blade 2. The saw blade 2 is located at one end of the handheld housing 1. A control switch is provided on the handheld housing 1. A driving part 3 corresponding to the saw blade 2 is provided inside the handheld housing 1. The saw blade 2 swings left and right through the driving part 3. A drilling mechanism 4 corresponding to the saw blade 2 is provided on the handheld housing 1. The drilling mechanism 4 slides along the top of the handheld housing 1.

[0031] The driving part 3 includes a driving disk 31, a driving block 32, and a driving gear set 35. The driving disk 31 is connected to the motor. A driving column 311 corresponding to the driving block 32 is provided on the driving disk 31. The driving column 311 squeezes the driving block 32. The driving block 32 and the driving gear set 35 are connected by a driving rod 33 and a driving gear 34. The driving gear 34 is located at the end of the driving rod 33 away from the driving block 32. The driving rod 33 and the driving block 32 are fixedly connected. A supporting plate 11 corresponding to the driving part 3 is provided in the handheld housing 1. The driving rod 33 is rotatably connected to the supporting plate 11 by a positioning column 331. The driving gear 34 and the driving gear set 35 are meshed with each other.

[0032] The driving gear set 35 includes a first gear 351, a second gear 352, and a third gear 353. The first gear 351 meshes with the driving gear 34. The driving gear 34 is a large gear, and the first gear 351 is a small gear. The first gear 351 and the second gear 352 are coaxially connected through a transmission shaft, and the third gear 353 meshes with the second gear 352. A clamping portion corresponding to the saw blade 2 is provided in the handheld housing 1, and the saw blade 2 is fixed between the clamping portion and the third gear 353.

[0033] The handheld housing 1 is provided with a moving part 5 corresponding to the drilling mechanism 4. The drilling mechanism 4 includes a moving housing 41 and a drilling rod 42. The drilling rod 42 is located inside the moving housing 41 and moves through a telescopic rod 43.

[0034] The moving part 5 includes a fixed plate 51 and a ball screw 52. The bottom of the moving shell 41 is fixed to the fixed plate 51 by a buckle. The top of the fixed plate 51 and the bottom of the moving shell 41 are provided with corresponding magnetic components. The magnetic components and the buckle cooperate with each other. The ball screw 52 passes through the fixed plate 51 and is connected with the fixed plate 51 by a thread. The ball screw 52 is driven by a motor.

[0035] When in use, the motor is started by controlling the switch, and the motor drives the driving disk 31 and the driving column 311 to rotate. The driving column 311 squeezes the two sides of the driving block 32 during the rotation, and the driving block 32 drives the driving rod 33 to swing repeatedly around the positioning column 331 as the origin. The driving rod 33 drives the driving gear 34 to move during the swinging process. The driving gear 34 and the first gear 351 are meshed with each other, and the driving gear 34 is a large gear and the first gear 351 is a small gear. The meshing between the two increases the transmission ratio, and the first gear 351 drives the second gear 352 to rotate synchronously. The second gear 352 is meshed with the third gear 353 to drive the third gear 353 to rotate, and the third gear 353 drives the saw blade 2, so as to realize the swing of the saw blade 2, and the bone sawing operation is realized by the saw blade 2, and the ball screw 52 is driven to rotate by the motor, and the ball screw 52 is meshed with the fixed plate 51 through threads, driving 51 to move in the direction of the ball screw 52, ​​and the movable housing 41 and the fixed plate 51 are fixed by the cooperation of the magnetic suction component and the buckle. When drilling is needed, the drilling mechanism 4 is installed on the fixed plate 51, and the drilling mechanism 4 is driven to move to a suitable position by the ball screw 52, ​​and the telescopic rod 43 starts to telescope and drives the drill rod 42 to move the drill rod 42 out of the movable housing 41 to drill the bone part.

[0036] Compared with the prior art, by integrating the saw blade 2 and the drilling mechanism 4, sawing and drilling operations can be performed simultaneously on the same surgical tool, thereby improving surgical efficiency and reducing the time for changing tools during surgery. The large gear and small gear design between the driving gear 34 and the first gear 351 increases the transmission ratio, making the saw blade 2 swing more precise and powerful, and more accurately controlling the sawing speed and strength, thereby improving the accuracy and safety of the surgery. The combination of the ball screw 52 and the fixed plate 51 enables the drilling mechanism 4 to slide easily along the top of the handheld shell 1 and accurately stay at any required position, and can flexibly handle bone drilling in different parts and at different angles, thereby reducing the difficulty of operation during surgery and improving the success rate of the surgery. The drilling mechanism 4 is fixed to the fixed plate 51 through the cooperation of the magnetic suction component and the buckle, which not only ensures the stability during the drilling process, but also allows the drilling mechanism 4 to be easily disassembled when not needed, thereby improving the versatility and portability of the tool.

[0037] Example 2

[0038] In the above embodiment, the swing amplitude of the saw blade 2 may be difficult to flexibly adjust according to actual needs, and during the sawing process, the generated debris cannot be discharged in time. Therefore, the embodiment of the present application optimizes the saw blade 2 and the drive unit 3 based on the above embodiment.

[0039] In this embodiment, the positioning column 331 includes a positioning rod 3111 and a driving sleeve 3112. The positioning rod 3111 is located inside the driving sleeve 3112 and is fixedly connected to the driving disk 31. The driving sleeve 3112 is slidably connected to the driving disk 31. A first airbag 3113 is provided between the driving sleeve 3112 and the positioning rod 3111.

[0040] The saw blade 2 includes a first blade 21 and a second blade 22. The first blade 21 is located at the top of the end of the saw blade 2 away from the handheld housing 1. The second blade 22 is located at the side of the first blade 21 close to the handheld housing 1 and is wedge-shaped. There is an angle between the second blade 22 and the first blade 21.

[0041] The first cutting edge 21 is provided with a transversely arranged chip groove 211 .

[0042] When in use, the inflation and deflation of the first airbag 3113 is controlled to adjust the center offset distance between the drive sleeve 3112 and the positioning rod 3111. The first airbag 3113 is located on the outside of the positioning rod 3111. When the drive disk 31 rotates, the first airbag 3113 is inflated to squeeze the drive block 32, driving the drive rod 33 to swing. The greater the offset of the center distance between the drive sleeve 3112 and the positioning rod 3111, the greater the swing amplitude of the drive rod 33, so that the swing amplitude of the saw blade 2 is greater. Conversely, when the first airbag 3113 is deflated, the center offset distance between the drive sleeve 3112 and the positioning rod 3111 is reduced, and the swing amplitude of the saw blade 2 is reduced, thereby realizing the adjustment of the swing amplitude of the saw blade 2.

[0043] When bone is sawed by the saw blade 2, since the angle between the second blade 22 and the first blade 21 is wedge-shaped, the angle of the incision can be enlarged during use, and finally a wedge-shaped incision is cut out, which is formed in one step. The chip groove 211 on the first blade 21 can facilitate chip removal during use, and can increase the contact area between the saw blade 2 and the bone, thereby improving the cutting efficiency.

[0044] Compared with the prior art, by introducing the first airbag 3113, the inflation and deflation of the airbag is used to control the center offset distance between the drive sleeve 3112 and the positioning rod 3111, thereby achieving accurate and flexible adjustment of the swing amplitude of the saw blade 2, so that the doctor can easily adjust the swing amplitude of the saw blade according to the specific needs of the operation, thereby improving the accuracy and flexibility of the operation. A transverse chip groove 211 is set on the first blade 21, which not only provides a discharge channel for debris and reduces the interference of debris on the sawing process, but also increases the contact area between the saw blade 2 and the bone, thereby improving the cutting efficiency, ensuring the smooth progress of the operation, and reducing the interruption or delay of the operation caused by chip removal problems. By designing the first blade 21 and the second blade 22 in the saw blade 2, wherein the second blade 22 is wedge-shaped and has an angle with the first blade 21, the angle of the incision can be enlarged during use to form a wedge-shaped incision, thereby achieving one-time molding, without the need for multiple sawing or adjustment of the saw blade position, thereby greatly improving the efficiency and accuracy of the operation.

[0045] Example 3

[0046] In the above-mentioned embodiments, the angle between the first blade 21 and the second blade 22 is often fixed and cannot be flexibly adjusted according to surgical requirements, which limits the applicability of the saw blade 2 in different surgical scenarios. Therefore, the embodiment of the present application optimizes the saw blade 2 based on the above-mentioned embodiment.

[0047] In this embodiment, the saw blade 2 is provided with an adjustment plate 23 corresponding to the second blade 22. The adjustment plate 23 is located at the end of the second blade 22 away from the first blade 21 and is fixedly connected to the saw blade 2. The adjustment plate 23 and the second blade 22 are connected by an adjustment connecting rod 231. The bottom of the adjustment plate 23 and the second blade 22 are provided with sliding grooves corresponding to the adjustment connecting rod 231. The two ends of the adjustment connecting rod 231 are respectively slidably hinged with the sliding grooves on the adjustment plate 23 and the second blade 22. A second airbag 24 is provided between the bottom of the second blade 22 and the saw blade 2.

[0048] When in use, the second blade 22 is squeezed by inflating and deflating the second airbag 24. The second blade 22 is squeezed and begins to flip up and down under the action of the adjusting connecting rod 231, thereby adjusting the angle between the second blade 22 and the first blade 21, so that the doctor can easily adjust the incision angle of the saw blade according to the surgical requirements, thereby improving the accuracy and flexibility of the surgery.

[0049] Compared with the prior art, the second blade 22 is controlled to flip up and down by the inflation and deflation of the second airbag 24, and then the angle between it and the first blade 21 is adjusted, so that the doctor can flexibly adjust the incision angle of the saw blade according to the specific needs of the operation, such as the shape and hardness of the bone and the space limitation of the operation site, thereby improving the accuracy and flexibility of the operation. The flexible adjustment of the angle enables the saw blade 2 to better adapt to the operation site and reduce the risk of damage to the surrounding tissues. At the same time, the optimized incision angle helps to reduce the resistance during the sawing process, improve the sawing efficiency, and shorten the operation time.

[0050] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A multifunctional orthopedic saw for orthopedic surgery, comprising a handheld housing (1) and a saw blade (2), wherein the saw blade (2) is located at one end of the handheld housing (1), and is characterized in that: The handheld housing (1) is provided with a driving part (3) corresponding to the saw blade (2) and a drilling mechanism (4); The driving part (3) comprises a driving disk (31), a driving block (32), and a driving gear set (35); a driving column (311) corresponding to the driving block (32) is provided on the driving disk (31); the driving block (32) and the driving gear set (35) are connected via a driving rod (33) and a driving gear (34); the driving gear (34) is located at one end of the driving rod (33) and meshes with the driving gear set (35); The driving gear set (35) is provided with a clamping portion corresponding to the saw blade (2), and the saw blade (2) is fixed to the driving gear set (35) via the clamping portion; The handheld housing (1) is provided with a moving part (5) corresponding to the drilling mechanism (4); the drilling mechanism (4) comprises a moving housing (41) and a drilling rod (42); the drilling rod (42) is located inside the moving housing (41) and is connected to the moving housing (41) via a telescopic rod (43); the moving housing (41) and the moving part (5) are fixedly connected.

2. A multifunctional orthopedic saw for orthopedic surgery according to claim 1, characterized in that: The driving rod (33) is fixedly connected to the driving block (32), and the driving gear (34) is located at an end of the driving rod (33) away from the driving block (32).

3. A multifunctional orthopedic saw for orthopedic surgery according to claim 1, characterized in that: A support plate (11) corresponding to the driving part (3) is provided inside the handheld housing (1), a positioning column (331) corresponding to the support plate (11) is provided on the driving rod (33), and the positioning column (331) is rotatably connected to the support plate (11).

4. A multifunctional orthopedic saw for orthopedic surgery according to claim 1, characterized in that: The driving gear set (35) comprises a first gear (351), a second gear (352), and a third gear (353); the first gear (351) and the driving gear (34) are meshed with each other; the driving gear (34) is a large gear, the first gear (351) is a small gear, and the first gear (351) and the second gear (352) are coaxially connected via a transmission shaft.

5. A multifunctional orthopedic saw for orthopedic surgery according to claim 4, characterized in that: The third gear (353) and the second gear (352) are meshed with each other, and the clamping portion is located on the third gear (353) and is fixed to the saw blade (2).

6. A multifunctional orthopedic saw for orthopedic surgery according to claim 1, characterized in that: The moving part (5) comprises a fixing plate (51) and a ball screw (52); the bottom of the moving housing (41) and the fixing plate (51) are fixedly connected via a buckle and a magnetic attraction component; the ball screw (52) passes through the fixing plate (51) and is connected to the fixing plate (51) via a thread.

7. A multifunctional orthopedic saw for orthopedic surgery according to claim 3, characterized in that: The positioning column (331) comprises a positioning rod (3111) and a driving sleeve (3112); the positioning rod (3111) is located inside the driving sleeve (3112) and is fixedly connected to the driving disk (31); the driving sleeve (3112) and the driving disk (31) are slidably connected; and a first airbag (3113) is provided between the driving sleeve (3112) and the positioning rod (3111).

8. The multifunctional orthopedic saw for orthopedic surgery according to claim 1, characterized in that: The saw blade (2) comprises a first blade (21) and a second blade (22), wherein the first blade (21) is located at the top of an end of the saw blade (2) away from the handheld housing (1), and the second blade (22) is located at an end of the first blade (21) close to the handheld housing (1).

9. A multifunctional orthopedic saw for orthopedic surgery according to claim 8, characterized in that: The second blade (22) is designed to be wedge-shaped, an angle is present between the second blade (22) and the first blade (21), and a chip groove (211) is provided on the first blade (21).

10. The multifunctional orthopedic saw for orthopedic surgery according to claim 8, characterized in that: The saw blade (2) is provided with an adjustment plate (23) corresponding to the second blade (22); the adjustment plate (23) and the second blade (22) are connected via an adjustment connecting rod (231); both ends of the adjustment connecting rod (231) are respectively slidably hinged to the adjustment plate (23) and the second blade (22); and a second air bag (24) is provided between the second blade (22) and the saw blade (2).

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