Bone cutting swing saw

Abstract

The utility model relates to a bone cutting swing saw, and relates to the field of orthopedic saws, the bone cutting swing saw comprises a swing saw main body, a switching assembly and a stable handle, the swing saw main body comprises a saw body, a saw blade and a handheld part; the saw blade is a component which is arranged on the saw body and used for cutting bones, and the handheld part is a component which is fixed on the saw body and used for grasping; the switching assembly is detachably and fixedly connected to the saw body; the stable handle is a component which is fixedly connected to the switching assembly and used for being grabbed. By grabbing the holding part and the stable handle, the swing saw can be grabbed by two hands, fatigue caused by single-hand use of a user is relieved, and the moving stability of the swing saw is improved.

Description

Technical Field

[0001] This application relates to the field of orthopedic saws, and more particularly to a bone-cutting oscillating saw. Background Technology

[0002] Currently, the bone-cutting oscillating saw is a medical device that cuts bone by reciprocating the oscillation of its blades. It is mainly used in orthopedic surgeries, such as spinal surgery, joint replacement surgery, bone cutting, and fracture treatment, enabling rapid and precise cutting of bone structures or bone implants.

[0003] Medical oscillating saws typically consist of a blade, a handle, and a connecting rod. In use, medical personnel drive the blade to cut by cranking the handle. When the handle is tilted forward, the connecting rod propels the blade forward, cutting through the bone; when the handle is cranked backward, the blade moves backward to prepare for the next cut. The reciprocating oscillation of the medical oscillating saw results in clean cuts and rapid cutting speed.

[0004] When using a oscillating saw, the doctor needs to continuously apply force to the handle to maintain its stability due to the swinging of the saw blade. Existing oscillating saws are all single-handed tools, and after using them for a period of time, the doctor's arm is prone to fatigue, which reduces the stability of the handheld oscillating saw. Utility Model Content

[0005] This application provides a bone-cutting oscillating saw that is easy to grip with both hands, reduces fatigue caused by single-handed use, and improves the stability of the oscillating saw's movement.

[0006] This application provides a bone-cutting oscillating saw, including an oscillating saw body, an adapter assembly, and a stabilizing handle. The oscillating saw body includes a saw blade, a saw blade, and a hand grip. The saw blade is a component disposed on the saw body for cutting bone, and the hand grip is a component fixed to the saw body for gripping. The adapter assembly is detachably fixedly connected to the saw body. The stabilizing handle is a component fixedly connected to the adapter assembly for gripping.

[0007] In the above technical solution, the adapter is fixed to the saw body, allowing medical staff to hold the handle with one hand and the stabilizing handle with the other, and simultaneously grip the swing saw with both hands. This improves the stability of gripping the swing saw, reduces the force required for gripping with one hand, and distributes the vibration generated by the swing saw between the two hands, which helps medical staff to grip the swing saw stably for operation.

[0008] Optionally, the adapter is positioned perpendicular to the handheld part, and the stabilizing handle is positioned parallel to the handheld part.

[0009] Optionally, the stabilizing handle and the handheld part are located on the same side of the adapter assembly.

[0010] Optionally, the adapter assembly includes a connecting sleeve, a handle adapter crossbar, and a circumferential limiting clamp; wherein, the connecting sleeve is fitted onto the saw body; the circumferential limiting clamp is fixed to the connecting sleeve, the circumferential limiting clamp has a limiting opening that can accommodate the insertion of the handpiece, the circumferential limiting clamp engages with the handpiece, and restricts the rotation of the connecting sleeve on the saw body; the handle adapter crossbar is fixedly connected to the connecting sleeve; and the stabilizing handle is fixed to the handle adapter crossbar.

[0011] Optionally, the inner diameter of the connecting sleeve gradually decreases from the end facing the saw blade to the end away from the saw blade.

[0012] Optionally, the adapter assembly may also include a silicone ring disposed inside the connecting sleeve, the inner diameter of which is equal to the diameter of the saw blade.

[0013] Optionally, the circumferential limiting clamp is positioned at the end where the handle connects to the saw body.

[0014] Optionally, the adapter assembly includes a sleeve and a clamp; wherein, one end of the sleeve is a connecting end, and the connecting end is provided with at least two connecting grooves penetrating the side wall of the sleeve; the clamp is fitted onto the connecting end, and when the connecting end is fitted onto the saw body, it presses the connecting end tightly onto the saw body.

[0015] Optionally, the clamp includes a notched retaining ring and two connecting lugs; wherein the two connecting lugs are fixedly connected to the two ends of the retaining ring in a corresponding manner in the circumferential direction, the retaining ring is sleeved on the outside of the connecting end, and the two connecting lugs are connected by a bolt and nut assembly.

[0016] In the above technical solution, after aligning the limiting part and the hand-held part, the connecting sleeve can be moved along the first direction to realize the installation connection between the connecting sleeve and the saw body. The connection between the adapter and the saw body is convenient and quick.

[0017] After the connecting end is fitted onto the outside of the saw body, the clamp tightens the connecting end. Due to the presence of the connecting groove, the connecting end can undergo elastic deformation, clamping the saw body and achieving a fixed connection between the adapter and the saw body. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of one embodiment;

[0019] Figure 2 This is a schematic diagram of the connection between the connecting sleeve and the saw body in one embodiment;

[0020] Figure 3 This is a schematic diagram of the connection between the adapter component and the saw body in one embodiment.

[0021] 1. Main body of the oscillating saw; 11. Saw body; 12. Saw blade; 13. Handle; 2. Adapter assembly; 21. Connecting sleeve; 211. Silicone ring; 22. Handle adapter crossbar; 23. Circumferential limit clamp; 24. Sleeve; 241. Connecting end; 242. Connecting groove; 25. Clamp; 251. Snap ring; 252. Connecting ear; 3. Stabilizing handle. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become clearer and more apparent.

[0023] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0024] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0025] This application discloses a bone-cutting oscillating saw. The oscillating saw includes a handheld part and a saw blade. When the oscillating saw is started, the saw blade swings back and forth. Medical staff grasp the handheld part and adjust the position of the saw blade by moving the handheld part so that the saw blade can cut the target part of the bone.

[0026] The oscillating saw is equipped with a motor and transmission components. The motor and transmission components drive the saw blade to swing. When the oscillating saw is started, it will generate vibration. When medical staff grasp the handle, the vibration of the oscillating saw is transmitted to the medical staff's arm through the handle. The existing handle is only suitable for medical staff to grasp with one hand. After using it for a period of time, the medical staff will feel obvious soreness and fatigue in their arms, which reduces the stability of moving the oscillating saw.

[0027] Reference Figure 1 This application discloses a bone-cutting oscillating saw, including a saw body 1, an adapter assembly 2, and a stabilizing handle 3. The saw body 1 includes a saw blade 11, a saw blade 12, and a handle 13; the saw blade 12 is a component disposed on the saw body 11 for cutting bone, and the handle 13 is a component fixed to the saw body 11 for gripping. The adapter assembly 2 is detachably fixedly connected to the saw body 11. The stabilizing handle 3 is a component fixedly connected to the adapter assembly 2 for gripping.

[0028] For ease of explanation, a first direction, a second direction, and a third direction are defined, where the first direction is the length direction of the saw body 11, the second direction is the left-right direction of the saw body 11, and the third direction is the length direction of the handle 13. In the accompanying drawings, the first direction is represented as the X direction, the second direction as the Y direction, and the third direction as the Z direction.

[0029] Specifically, the main body 1 of the oscillating saw includes a saw body 11, a saw blade 12, and a handheld part 13. The saw body 11 is equipped with a motor, a control circuit, and a transmission mechanism. The control circuit controls the operating state of the motor, and the motor is connected to the input end of the transmission mechanism, providing power to the transmission mechanism. One end of the saw body 11 is provided with a mounting mechanism, which is connected to the output end of the transmission mechanism. The mounting mechanism is used for detachable and fixed connection of the saw blade 12. One end of the saw blade 12 can be quickly installed and fixed to the saw body 11 or removed from the saw body 11 through the mounting mechanism.

[0030] When the motor starts, it transmits power to the saw blade 12 through the transmission mechanism, driving the saw blade 12 to move back and forth. The motor, control circuit, transmission mechanism, and mounting mechanism are not shown in the attached drawings.

[0031] The handle 13 is fixedly connected to the saw body 11 at one end along a third direction. A battery is housed inside the handle 13 to provide power to the motor and control circuitry. The handle 13 is for medical personnel to grip; exemplaryly, the length direction of the handle 13 is perpendicular to the length direction of the saw body 11. In another embodiment, the angle between the length direction of the handle 13 and the length direction of the saw body 11 is 80°.

[0032] The oscillating saw also includes an adapter component 2, which is detachably and fixedly connected to the saw body 11. A stabilizing handle 3 for gripping is fixed to the adapter component 2. The adapter component 2 can be fixed to or removed from the saw body 11 as needed. The specific structural form of the adapter component 2 can adopt the structure described later, or it can use other existing connection methods that fix pipes to rods to achieve a detachable and fixed connection with the saw body 11.

[0033] When the bone to be cut by the saw blade 12 is small or the operation time is short, the adapter 2 can be removed from the saw body 11 to reduce the impact on the operator and facilitate the operation of medical staff.

[0034] When the bone being cut by the saw blade 12 is thick, or when the operation time is long, the adapter component 2 is fixed to the saw body 11. At this time, the stabilizing handle 3 is fixed relative to the saw body 11. Medical staff can hold the handle part 13 with one hand and the stabilizing handle 3 with the other hand, and hold the oscillating saw with both hands at the same time. This improves the stability of the grip, reduces the force of gripping with one hand, and the vibration generated by the oscillating saw is shared by both hands, which helps medical staff to hold the oscillating saw stably for operation.

[0035] When the grip part 13 is held firmly and the stabilizing handle 3 is rotated appropriately, the position of the saw blade 12 can be finely adjusted, which helps medical staff to operate.

[0036] Reference Figure 1As an optional solution, the adapter 2 is positioned perpendicular to the handheld part 13, and the stabilizing handle 3 is positioned parallel to the handheld part 13.

[0037] Specifically, the adapter component 2 is arranged along the second direction, the stabilizing handle 3 is arranged along the third direction, the stabilizing handle 3 and the handheld part 13 are respectively arranged at both ends of the adapter component 2, and the stabilizing handle 3 and the handheld part 13 are spaced apart along the second direction.

[0038] Furthermore, the stabilizing handle 3 and the hand-held part 13 are spaced apart along the first direction, and the stabilizing handle 3 is away from the saw blade 12 along the first direction relative to the hand-held part 13.

[0039] In another embodiment, the stabilizing handle 3 is disposed perpendicular to the hand-held portion 13 and is disposed along a second direction.

[0040] In another embodiment, the stabilizing handle 3 is tilted, and there is an angle between the stabilizing handle 3 and the second direction. For example, the angle between the length direction of the stabilizing handle 3 and the second direction is 45°.

[0041] In this embodiment, the stabilizing handle 3 is used for the user's left hand to hold, and the hand-held part 13 is used for the user's right hand to hold.

[0042] The position of the stabilizing handle 3 is parallel to the hand grip 13, making it easier for the user to grip the stabilizing handle 3 when gripping the hand grip 13, thereby further improving the stability of the user's grip on the swing saw.

[0043] Reference Figure 1 As an alternative, the stabilizing handle 3 and the handheld part 13 are located on the same side of the adapter assembly 2.

[0044] Specifically, the adapter handle and the handheld part 13 are located on the same side of the adapter assembly 2 along a third direction.

[0045] In another embodiment, the stabilizing handle 3 and the handheld part 13 are located on both sides of the adapter assembly 2 along a third direction.

[0046] Reference Figure 1 As an optional solution, the adapter assembly 2 includes a connecting sleeve 21, a handle adapter crossbar 22, and a circumferential limiting clamp 23. The connecting sleeve 21 is fitted onto the saw body 11.

[0047] The circumferential limiting clamp 23 is fixed on the connecting sleeve 21. The circumferential limiting clamp 23 has a limiting opening that can accommodate the insertion of the hand-held part 13. The circumferential limiting clamp 23 is engaged with the hand-held part 13, restricting the connecting sleeve 21 from rotating on the saw body 11.

[0048] The handle adapter bar 22 is fixedly connected to the connecting sleeve 21. The stabilizing handle 3 is fixed to the handle adapter bar 22.

[0049] Specifically, the inner side of the connecting sleeve 21 mates with the outer side of the saw body 11. The connecting sleeve 21 is fitted onto the outer side of the saw body 11, and is located at the end of the saw body 11 away from the saw blade 12 along the first direction. When the connecting sleeve 21 is located on the outer side of the saw body 11, the connecting sleeve 21 can rotate around the center line of the saw body 11 or slide along the first direction.

[0050] When the connecting sleeve 21 slides along the first direction toward the saw blade 12 to a set position, the handle 13 prevents the connecting sleeve 21 from sliding along the first direction toward the saw blade 12. In this embodiment, when the connecting sleeve 21 slides along the first direction to contact the handle 13, the handle 13 prevents the connecting sleeve 21 from sliding along the first direction toward the saw blade 12.

[0051] Since the oscillating saw is generally pushed forward when cutting, the connecting sleeve 21 contacts and presses against the handheld part 13 during the use of the oscillating saw, so it can be considered that the connecting sleeve 21 cannot slide along the first direction.

[0052] In this embodiment, the circumferential limiting clamp 23 consists of two rods fixed on the connecting sleeve 21. The two rods are located on the left and right sides of the saw body 11, respectively. The limiting opening is the space between the two rods. The distance between the opposite sidewalls of the two rods along the second direction is equal to the thickness of the handheld part 13 along the second direction.

[0053] When the connecting sleeve 21 contacts the end face of the hand-held part 13 along the first direction, the limiting opening accommodates the hand-held part 13, and the two rods respectively contact the two side walls of the hand-held part 13 along the second direction, preventing the connecting sleeve 21 from rotating around the center line of the saw body 11.

[0054] When the connecting sleeve 21 is fitted onto the saw body 11, the connecting sleeve 21 moves along the first direction. At this time, the limiting opening accommodates the hand-held part 13, and the circumferential limiting clamp 23 moves to both sides of the hand-held part 13. When the connecting sleeve 21 contacts the hand-held part 13, a stable connection between the connecting sleeve 21 and the saw body 11 is achieved.

[0055] When the limiting member is aligned with the hand-held part 13, the connecting sleeve 21 only needs to move along the first direction to realize the installation connection between the connecting sleeve 21 and the saw body 11, which is convenient and quick; when disassembling, the connecting sleeve 21 only needs to be moved along the first direction and away from the saw blade 12 to separate the adapter component 2 from the saw body 11.

[0056] Furthermore, the two rods of the circumferential limiting clamp 23 are located on opposite sidewalls along the second direction, and the ends of the rods located away from the connecting sleeve 21 along the first direction are provided with chamfers to facilitate the movement of the two rods to the sidewall of the handheld part 13.

[0057] Reference Figure 1As an optional solution, the circumferential limiting clamp 23 is engaged with the handheld part 13 at the end where the handheld part 13 is connected to the saw body 11.

[0058] Specifically, the circumferential limiting clamp 23 is located at the end where the hand-held part 13 connects to the saw body 11. The setting of the limiting part does not affect or has little effect on medical staff gripping the hand-held part 13, making it convenient for medical staff to use the swing saw.

[0059] Reference Figure 2 As an alternative, the inner diameter of the connecting sleeve 21 gradually decreases from the end facing the saw blade 12 to the end away from the saw blade 12.

[0060] Specifically, the inner diameter of the connecting sleeve 21 gradually decreases along the first direction and away from the saw blade 12. The maximum inner diameter of the connecting sleeve 21 is greater than the outer diameter of the saw body 11, and the minimum inner diameter is equal to or slightly less than the outer diameter of the saw body 11.

[0061] In this embodiment, the outer side of the saw body 11 is cylindrical, and the connecting sleeve 21 is a circular sleeve, with the inner diameter of the connecting sleeve 21 being the diameter of its inner cavity. In another embodiment, the outer side of the saw body 11 is square-column shaped, and the connecting sleeve 21 is a square sleeve, with the inner diameter of the connecting sleeve 21 representing the gap between two opposing inner sidewalls of the connecting sleeve 21.

[0062] The inner diameter of the connecting sleeve 21 is larger than the outer diameter of the saw body 11, which makes it easier for the connecting sleeve 21 to move and be fitted onto the outside of the saw body 11.

[0063] In another embodiment, the inner diameter of the connecting sleeve 21 gradually decreases from the end facing the saw blade 12 to the end away from the saw blade 12 until it is equal to the outer diameter of the saw body 11 and then remains unchanged.

[0064] Reference Figure 2 As an optional solution, a silicone ring 211 is provided on the inner side of the connecting sleeve 21, and the inner diameter of the silicone ring 211 is equal to the diameter of the saw body 11. When the connecting sleeve 21 is fitted onto the outside of the saw body 11, the silicone ring 211 is also fitted onto the outside of the saw body 11. As the connecting sleeve 21 moves along the first direction toward the saw blade 12, the connecting sleeve 21 and the silicone ring 211 are pressed together, the silicone ring 211 deforms, and the silicone ring 211 is pressed onto the saw body 11. The friction between the silicone ring 211 and the saw body 11 can improve the stability of the connection between the connecting sleeve 21 and the saw body 11.

[0065] Reference Figure 3 As an optional solution, the adapter assembly 2 includes a sleeve 24 and a clamp 25. One end of the sleeve 24 is a connecting end 241, and the connecting end 241 is provided with at least two connecting grooves 242 that penetrate the side wall of the sleeve 24.

[0066] The clamp 25 is fitted onto the connecting end 241, and when the connecting end 241 is fitted onto the saw body 11, the connecting end 241 is pressed tightly onto the saw body 11.

[0067] Specifically, the end of the sleeve 24 facing the saw blade 12 is the connecting end 241, and the connecting end 241 is provided with six connecting grooves 242. The connecting grooves 242 penetrate the side wall of the sleeve 24, and the connecting grooves 242 do not penetrate the end of the sleeve 24 away from the saw blade 12 in the first direction.

[0068] The connecting grooves 242 are spaced apart along the circumference of the sleeve 24. In this embodiment, six connecting grooves 242 are equally spaced along the circumference of the sleeve 24. The number of connecting grooves 242 is set as needed, and the number of connecting grooves 242 is not less than two. In another embodiment, the number of connecting grooves 242 is two, three, four, or seven.

[0069] The connection groove 242 is provided so that the connection end 241 undergoes elastic deformation when subjected to a force in the direction of the center line of the sleeve 24, and the inner diameter of the connection end 241 can be reduced. When the connection end 241 is sleeved on the outside of the saw body 11, the inner wall of the connection end 241 is pressed and locked against the saw body 11.

[0070] The clamp 25 includes a notched retaining ring 251 and two connecting lugs 252, which are fixedly connected to the two ends of the retaining ring 251 in a circumferential direction. The retaining ring 251 is sleeved on the outside of the connecting end 241, and the two connecting lugs 252 are connected by a bolt and nut assembly. The bolt and nut assembly applies pressure to the two connecting lugs 252 to clamp the clamp 25 to the connecting end 241. In another embodiment, the nut is a wing nut to facilitate rotation.

[0071] When the sleeve 24 is fitted onto the saw body 11, the connecting end 241 is fitted onto the saw body 11, and the clamp 25 is fitted onto the connecting end 241. The clamp 25 clamps the connecting end 241. Due to the presence of the connecting groove 242, the connecting end 241 can undergo elastic deformation. The connecting end 241 clamps the saw body 11, thereby achieving a fixed connection between the adapter component 2 and the saw body 11.

[0072] Furthermore, the connecting lug 252 is provided with a receiving groove, the shape of which is a hexagonal groove that matches the nut. The receiving groove is coaxial with the circular hole on the connecting lug 252 for the bolt to pass through. In use, the nut is placed into the receiving groove, and the connection or disconnection with the nut can be achieved simply by rotating the bolt.

[0073] Furthermore, the handgrip 13 is provided with a groove corresponding to the grip of a person's fingers, which improves the stability of the handgrip 13.

[0074] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0076] The present application has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present application based on these embodiments, all of which fall within the protection scope of the present application.

Claims

1. A bone cutting swing saw, characterized by, Including swing saw body (1), adapter assembly (2) and stable handle (3), wherein, The swing saw body (1) includes a saw body (11), a saw blade (12) and a hand-held part (13); the saw blade (12) is a component provided on the saw body (11) for cutting bone, and the hand-held part (13) is a component fixed on the saw body (11) for gripping; The adapter assembly (2) is detachably fixedly connected to the saw body (11); The stable handle (3) is a component fixedly connected to the adapter assembly (2) and used for gripping.

2. The oscillating saw according to claim 1, wherein The adapter assembly (2) is arranged perpendicular to the hand-held part (13), and the stable handle (3) is arranged parallel to the hand-held part (13).

3. The oscillating saw according to claim 1, wherein The stable handle (3) and the hand-held part (13) are located on the same side of the adapter assembly (2).

4. The oscillating saw according to claim 1, wherein The adapter assembly (2) includes a connecting sleeve (21), a handle adapter cross bar (22) and a circumferential limiting clamp (23); wherein, The connecting sleeve (21) is sleeved on the saw body (11); The circumferential limiting clamp (23) is fixed on the connecting sleeve (21), the circumferential limiting clamp (23) has a limiting opening, the limiting opening can accommodate the hand-held part (13) to be embedded, the circumferential limiting clamp (23) is clamped with the hand-held part (13), and the rotation of the connecting sleeve (21) on the saw body (11) is limited; The handle adapter cross bar (22) is fixedly connected to the connecting sleeve (21); The stable handle (3) is fixed to the handle adapter cross bar (22).

5. The oscillating saw according to claim 4, wherein The inner diameter of the connecting sleeve (21) gradually decreases from one end towards the saw blade (12) to the other end away from the saw blade (12).

6. The oscillating saw according to claim 5, wherein The adapter assembly (2) further includes a silica gel ring (211), the silica gel ring (211) is arranged on the inner side of the connecting sleeve (21), and the inner diameter of the silica gel ring (211) is equal to the diameter of the saw body (11).

7. The oscillating saw according to claim 4, wherein The clamping position of the circumferential limiting clamp (23) and the hand-held part (13) is located at one end of the hand-held part (13) connected with the saw body (11).

8. The oscillating saw of claim 1, wherein, The adapter assembly (2) includes a sleeve (24) and a clamp (25); wherein, One end of the sleeve (24) is a connecting end (241), and at least two connecting grooves (242) penetrating the side wall of the sleeve (24) are arranged on the connecting end (241); The clamp (25) is sleeved on the connecting end (241), and the connecting end (241) is pressed on the saw body (11) when the connecting end (241) is sleeved on the outside of the saw body (11).

9. The oscillating saw according to claim 8, wherein, The clamp (25) includes a clasp (251) with a notch and two connecting tabs (252); wherein, Two connecting tabs (252) are fixedly connected with two ends of the clasp (251) in the circumferential direction one by one, the clasp (251) is sleeved on the outside of the connecting end (241), and the two connecting tabs (252) are connected by a bolt and nut assembly.

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