Swinging saw blade, swinging saw assembly and swinging saw device

Abstract

The application discloses a swing saw blade, a swing saw assembly and a swing saw device. The swing saw blade comprises a main body part, a tool bit part and a reinforcing part. The tool bit part is located at the end of the main body part. The reinforcing part is located at the connection between the tool bit part and the main body part, and the reinforcing part, the tool bit part and the main body part are integrally formed. Thus, compared with the swing saw blade in the prior art, the swing saw blade of the application has the advantages that the reinforcing part is arranged at the connection between the tool bit part and the main body part, and the reinforcing part, the tool bit part and the main body part are integrally formed, which helps to improve the structural strength and overall rigidity of the swing saw blade, and also helps to disperse the stress concentration generated at the connection between the tool bit part and the main body part during high-frequency reciprocating swinging of the swing saw blade, thereby helping to reduce the risk of fracture of the connection between the tool bit part and the main body part due to fatigue load.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a oscillating saw blade, an oscillating saw assembly, and an oscillating saw device. Background Technology

[0002] In orthopedic surgery, a oscillating saw is typically used to cut bone tissue. An oscillating saw generally consists of an oscillating saw blade and a drive assembly. The oscillating saw blade typically includes a main body and a cutting head connected to the main body. The drive assembly is connected to the main body to drive the main body of the oscillating saw blade to oscillate at high frequency, thereby causing the cutting head to cut the bone tissue. However, in related technologies, the connection between the main body and the cutting head of the oscillating saw blade has low strength, making it prone to breakage. Utility Model Content

[0003] This application provides a oscillating saw blade, an oscillating saw assembly, and an oscillating saw device, which can solve at least one of the above-mentioned technical problems.

[0004] In a first aspect, embodiments of this application provide a oscillating saw blade, comprising:

[0005] Main body;

[0006] The blade head, located at the end of the main body; and

[0007] A reinforcing part is located at the connection between the blade head and the main body, and the reinforcing part, the blade head, and the main body are integrally formed.

[0008] In some embodiments, the reinforcing portion includes a plurality of first reinforcing portions, and the main body portion is provided with the first reinforcing portions on both sides along its width direction.

[0009] In some embodiments, the width of the first reinforcing portion gradually increases from the main body portion toward the blade head.

[0010] In some embodiments, the first reinforcing portion has an arc-shaped edge on the side opposite to the main body portion, and the center of curvature of the arc-shaped edge is located on the side of the first reinforcing portion opposite to the main body portion.

[0011] In some embodiments, the reinforcing portion further includes a plurality of second reinforcing portions, and the main body portion is provided with second reinforcing portions on both sides along its thickness direction.

[0012] In some embodiments, the thickness of the second reinforcing portion gradually increases from the main body portion toward the blade head.

[0013] In some embodiments, the thickness of the blade head is greater than the thickness of the main body.

[0014] In some embodiments, the width of the main body gradually decreases from the main body portion toward the blade head.

[0015] Secondly, embodiments of this application provide a oscillating saw assembly, including:

[0016] Sheath plate, the sheath plate having a receiving cavity and an opening, the opening communicating with the receiving cavity; and

[0017] In any of the above embodiments of the oscillating saw blade, one end of the main body is oscillatingly disposed within the receiving cavity, and the other end of the main body protrudes from the opening so that the blade head is located outside the receiving cavity.

[0018] Thirdly, embodiments of this application provide a swing saw device, including:

[0019] The oscillating saw assembly of any of the above embodiments; and

[0020] A drive assembly is connected to the oscillating saw blade to drive the oscillating saw blade to oscillate.

[0021] The oscillating saw blade, oscillating saw assembly, and oscillating saw device provided in this application include a oscillating saw blade comprising a main body, a blade head, and a reinforcing part. The blade head is located at the end of the main body. The reinforcing part is located at the connection between the blade head and the main body, and the reinforcing part, blade head, and main body are integrally formed. Thus, compared to oscillating saw blades in the related art, the oscillating saw blade of this application, by providing a reinforcing part at the connection between the blade head and the main body and integrally forming the reinforcing part, blade head, and main body, helps to improve the structural strength and overall rigidity of the oscillating saw blade. It also helps to disperse stress concentration generated at the connection between the blade head and the main body during high-frequency reciprocating oscillation, thereby helping to reduce the risk of fracture at the connection between the blade head and the main body due to fatigue load. Furthermore, since the reinforcing part, blade head, and main body are integrally formed, it helps to reduce the assembly steps of the oscillating saw blade, thereby helping to improve the assembly efficiency of the oscillating saw assembly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the oscillating saw blade provided in an embodiment of this application.

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of section II.

[0025] Figure 3 This is a schematic diagram of the structure of a oscillating saw blade provided in another embodiment of this application.

[0026] Figure 4 for Figure 3 Enlarged diagram of point IV in the middle.

[0027] Figure 5 This is a schematic diagram of the oscillating saw assembly provided in an embodiment of this application.

[0028] Explanation of icon numbers:

[0029] 10. Oscillating saw blade; 20. Sheath plate; 30. Oscillating saw assembly; 100. Main body; 200. Blade head; 300. Reinforcing part; 310. First reinforcing part; 311. Arc edge; 320. Second reinforcing part.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0032] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Please see Figure 1 and Figure 2 This application provides an oscillating saw blade 10, which includes a main body 100, a blade head 200, and a reinforcing part 300. The blade head 200 is located at the end of the main body 100. The reinforcing part 300 is located at the connection between the blade head 200 and the main body 100, and the reinforcing part 300, the blade head 200, and the main body 100 are integrally formed. Thus, compared with oscillating saw blades in the related art, the oscillating saw blade 10 of this application, by providing a reinforcing part 300 at the connection between the blade head 200 and the main body 100, and by integrally forming the reinforcing part 300, the blade head 200, and the main body 100, helps to improve the structural strength and overall rigidity of the oscillating saw blade 10, and also helps to disperse the stress concentration generated at the connection between the blade head 200 and the main body 100 during high-frequency reciprocating oscillation, thereby helping to reduce the risk of fracture at the connection between the blade head 200 and the main body 100 due to fatigue load.

[0036] Furthermore, since the reinforcing part 300, the blade head 200 and the main body 100 are integrally formed, it helps to reduce the assembly process of the oscillating saw blade 10, thereby helping to improve the assembly efficiency of the oscillating saw assembly 30.

[0037] The oscillating saw blade 10 can be made of metal materials, such as stainless steel or titanium alloy, to ensure that it maintains sufficient rigidity and fatigue strength during high-frequency reciprocating oscillation.

[0038] The overall outline of the main body 100 can be roughly plate-shaped. By selecting a reasonable thickness and designing the planar dimensions, the main body 100 can reduce the overall weight of the oscillating saw blade 10 while ensuring sufficient strength, making it easier to operate and reducing the burden during surgery.

[0039] The blade head 200 has multiple serrations at the end opposite to the main body 100. These serrations can be arranged sequentially along the edge of the blade head 200, and the spacing and height of the serrations can be adjusted according to actual application requirements. A reasonable arrangement of serrations can effectively disperse cutting force, reduce tissue damage caused by excessive local pressure, and at the same time reduce the wear rate of the serrations, extending their service life.

[0040] The reinforcing part 300 can be used to improve the mechanical strength and fatigue resistance of the connection between the cutter head 200 and the main body 100, and prevent fracture due to stress concentration during high-frequency reciprocating oscillation.

[0041] There are several types of reinforcement 300. For example, reinforcement 300 can be designed as an arc-shaped transition structure, which connects the main body 100 and the cutter head 200, forming a continuous and smooth curved transition between the two, effectively dispersing stress and avoiding stress concentration caused by sharp corners or right angles.

[0042] For example, the reinforcing part 300 can also be a locally thickened structure, that is, the material thickness is increased in the connection area between the main body 100 and the blade head 200, so that the cross-sectional dimension of the connection area between the main body 100 and the blade head 200 is larger than other parts of the main body 100 or the blade head 200, thereby improving the bending and shearing resistance.

[0043] For example, the reinforcing part 300 can also be configured as a reinforcing rib structure, including one or more raised ribs extending longitudinally or laterally. The raised ribs are integrated into the surface of the connection area, thereby improving the stability of the overall structure by increasing local stiffness. The raised reinforcing ribs can be arranged radially, in a grid pattern, or in parallel, and the arrangement can be optimized according to the direction of force.

[0044] In some embodiments, the reinforcing portion 300 includes a plurality of first reinforcing portions 310, with the main body 100 having first reinforcing portions 310 on both sides along its width direction. The number of first reinforcing portions 310 can be two, located on the left and right outer sides of the main body 100, respectively, symmetrically or asymmetrically distributed at the lateral boundaries of the connection area between the main body 100 and the cutting head 200. The first reinforcing portions 310 are implemented through structural forms such as local material thickening, edge flanging, rib forming, or arc-shaped edging. The contour of the first reinforcing portion 310 matches the connection area between the main body 100 and the cutting head 200, forming a continuous mechanical support path. Thus, the first reinforcing portions 310 can increase the moment of inertia of the cross-section of the connection area between the main body 100 and the cutting head 200, improving the bending stiffness and torsional resistance of the connection area, and effectively suppressing the initiation and propagation of cracks caused by alternating stress during high-frequency reciprocating oscillation. In addition, the first reinforcing parts 310 provided on both sides of the main body 100 work together to distribute the load evenly in the connection area between the main body 100 and the blade head 200, reduce local stress concentration, and enhance the overall stability and durability of the oscillating saw blade 10.

[0045] From the main body 100 toward the cutter head 200, the width of the first reinforcing part 310 gradually increases. Here, the increase in width means that within the connection area between the main body 100 and the cutter head 200, the lateral dimension of the first reinforcing part 310 in the width direction of the main body 100 increases progressively, forming an extended structure that transitions from a relatively narrow part of the main body 100 to a wider root of the cutter head 200.

[0046] The gradual width design of the first reinforcing section 310 gives its outer contour a fan-shaped or arc-shaped expansion, effectively increasing the material distribution area and structural stiffness of the connection region between the main body 100 and the blade head 200. It also helps optimize the stress transmission path, allowing the cutting load from the blade head 200 to be smoothly transferred to the main body 100, avoiding stress concentration caused by abrupt changes in cross-section. Furthermore, the continuous and smooth width gradient of the first reinforcing section 310, without sharp edges or abrupt changes on the surface, further enhances the fatigue resistance of the oscillating saw blade 10.

[0047] The first reinforcing part 310 has an arc-shaped edge 311 on the side opposite to the main body 100, with the center of curvature of the arc-shaped edge 311 located on the side of the first reinforcing part 310 opposite to the main body 100. That is, the arc-shaped edge 311 is concave towards the main body 100, forming a concave arc transition profile. The center of curvature of the arc-shaped edge 311 is located outside the main body 100, giving the arc-shaped edge 311 an overall inwardly converging geometric shape. Thus, the arc-shaped edge 311 smoothly connects the connection area between the blade head 200 and the main body 100, effectively alleviating stress concentration caused by abrupt changes in cross-section. During the high-frequency reciprocating oscillation of the oscillating saw blade 10, the arc-shaped edge 311 can guide stress distribution along a smooth path, avoiding the generation of localized high-stress areas at sharp corners or right-angle transitions, thereby improving the fatigue resistance of the connection area between the blade head 200 and the main body 100.

[0048] Please see Figure 3 and Figure 4 In some embodiments, the reinforcing portion 300 further includes a plurality of second reinforcing portions 320, with the main body 100 having second reinforcing portions 320 on both sides along its thickness direction. The number of second reinforcing portions 320 can be two, and the two second reinforcing portions 320 are symmetrically or asymmetrically distributed on opposite sides of the main body 100, covering the root region where the main body 100 transitions to the cutter head 200. The second reinforcing portions 320 achieve structural reinforcement through local thickening, contour strengthening, or geometric reconstruction, and their cross-sectional shape can be trapezoidal, arc-shaped, or a chamfered polygon to optimize the stress transmission path.

[0049] The second reinforcing part 320, together with the main body 100, the cutter head 200 and the first reinforcing part 310, constitutes a composite reinforcing system. The transitions between the structures are smooth, without obvious steps or sharp angles, which effectively reduces stress concentration caused by alternating loads during high-frequency reciprocating oscillation.

[0050] The thickness of the second reinforcing part 320 gradually increases from the main body 100 towards the blade head 200. Specifically, this gradual increase in thickness means that within the connection area between the blade head 200 and the main body 100, the material dimension of the second reinforcing part 320 continuously increases from the root to the tip along the thickness direction of the oscillating saw blade 10, forming a smooth transition structure from thin to thick. This gradual thickness design gives the cross-sectional profile of the second reinforcing part 320 a sloped or stepped thickening shape, effectively increasing the structural stiffness and load-bearing capacity of the root region of the blade head 200. This helps optimize the stress distribution path, allowing the dynamic load generated during cutting to be smoothly transferred from the blade head 200 to the main body 100, avoiding stress concentration caused by abrupt changes in cross-section. The continuous thickness change of the second reinforcing part 320 without obvious abrupt changes and the smooth surface transition further enhances its fatigue resistance.

[0051] In some embodiments, the thickness of the cutter head 200 is greater than the thickness of the main body 100. The cutter head 200, as the functional area directly involved in bone tissue cutting, bears the main cutting forces, frictional forces, and impact loads during high-frequency reciprocating motion. A relatively larger thickness in the cutter head 200 significantly improves local rigidity and wear resistance. The main body 100, as the part connecting the drive assembly and transmitting power, adopts a relatively smaller thickness design. This helps reduce overall weight, decrease motion inertia, and improve operational flexibility while meeting transmission strength requirements.

[0052] In addition, the relatively large thickness of the cutter head 200 makes it less prone to bending or twisting when subjected to large axial and lateral forces, ensuring the stability and accuracy of the cutting process.

[0053] In some embodiments, the width of the main body 100 gradually decreases from the main body 100 towards the blade head 200. Specifically, as the main body 100 extends along its length from the end connected to the drive assembly towards the blade head 200, its width gradually decreases, forming a tapered transition structure from wide to narrow. This tapered design with decreasing width causes the two sides of the main body 100 to taper inwards, smoothly transitioning from a wider cross-section near the drive assembly to a narrower cross-section at the blade head 200. This helps optimize the overall mechanical distribution of the oscillating saw blade 10, reducing the vibration amplitude caused by inertial forces and alternating stresses during high-frequency reciprocating oscillations, thereby improving the dynamic stability of the oscillating saw blade 10.

[0054] Please see Figure 5 This application provides a oscillating saw assembly 30, which may include a sheath plate 20 and an oscillating saw blade 10 as described in any of the above embodiments. The sheath plate 20 has a receiving cavity and an opening, with the opening communicating with the receiving cavity to form an internal space for accommodating and guiding the movement of the oscillating saw blade 10. The receiving cavity is used to accommodate a part of the main body 100 of the oscillating saw blade 10, providing structural support and motion guidance, while the opening serves as a channel for the movement of the main body 100, allowing the main body 100 to oscillate back and forth within a certain range.

[0055] The other end of the main body 100 extends through the opening so that the blade head 200 is located outside the receiving cavity. Specifically, one end of the main body 100 of the oscillating saw blade 10 is oscillatingly disposed within the receiving cavity and is movably connected to the sheath plate 20 via a pin, hinge structure, or elastic connector, allowing the main body 100 to oscillate at a high frequency around the connection point under the action of driving force. The other end of the main body 100 extends through the opening to the outside of the sheath plate 20, with the blade head 200 located outside the receiving cavity and exposed to the external environment to achieve direct cutting of bone tissue. The sheath plate 20 limits, guides, and protects the movement of the oscillating saw blade 10, preventing the blade head 200 from lateral deviation or excessive displacement during oscillation, thereby improving cutting accuracy and surgical safety.

[0056] The sheath plate 20 can be made of high-strength engineering plastics or metal materials, with good rigidity, wear resistance and biocompatibility. Its shape is adapted to the needs of surgical operation, and the surface is provided with a grip or connection interface for easy assembly with the drive device.

[0057] This application provides a swing saw device, which includes a drive assembly and a swing saw assembly 30 as described in any of the above embodiments. The drive assembly is disposed at one end of the sheath plate 20 or integrated with the sheath plate 20. The output end of the drive assembly is connected to the main body 100 of the swing saw blade 10 through a transmission mechanism, transmitting the driving force to the swing saw blade 10. The transmission mechanism can adopt an eccentric connecting rod, a flexible transmission shaft, an electromagnetic drive module, or a gear rocker structure to convert the rotational motion or reciprocating linear motion generated by the drive assembly into high-frequency reciprocating oscillation of the swing saw blade 10 around a fulcrum. The drive assembly provides a stable and controllable power output, adjusting the oscillation frequency and amplitude to adapt to the cutting requirements of bone tissues with different hardness. The sheath plate 20 constrains and guides the movement path of the swing saw blade 10, preventing the blade head 200 from lateral displacement or vibration during oscillation, thereby improving cutting accuracy and operational safety.

[0058] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A oscillating saw blade, characterized in that, include: Main body; A cutting head, the cutting head being located at the end of the main body; as well as A reinforcing part is located at the connection between the blade head and the main body, and the reinforcing part, the blade head, and the main body are integrally formed.

2. The oscillating saw blade according to claim 1, characterized in that, The reinforcing part includes a plurality of first reinforcing parts, and the main body is provided with the first reinforcing parts on both sides along its width direction.

3. The oscillating saw blade according to claim 2, characterized in that, The width of the first reinforcing portion gradually increases from the main body towards the blade head.

4. The oscillating saw blade according to claim 2, characterized in that, The first reinforcing part has an arc-shaped edge on the side away from the main body, and the center of curvature of the arc-shaped edge is located on the side of the first reinforcing part away from the main body.

5. The oscillating saw blade according to claim 1, characterized in that, The reinforcing part also includes a plurality of second reinforcing parts, and the main body is provided with second reinforcing parts on both sides along its thickness direction.

6. The oscillating saw blade according to claim 5, characterized in that, The thickness of the second reinforcing portion gradually increases from the main body towards the blade head.

7. The oscillating saw blade according to claim 1, characterized in that, The thickness of the blade head is greater than the thickness of the main body.

8. The oscillating saw blade according to claim 1, characterized in that, The width of the main body gradually decreases from the direction of the main body towards the blade head.

9. A oscillating saw assembly, characterized in that, include: A sheath plate, the sheath plate having a receiving cavity and an opening, the opening communicating with the receiving cavity; as well as According to any one of claims 1 to 8, one end of the main body is oscillatingly disposed within the receiving cavity, and the other end of the main body extends through the opening so that the blade head is located outside the receiving cavity.

10. A swing saw device, characterized in that, include: The oscillating saw assembly as described in claim 9; as well as A drive assembly is connected to the oscillating saw blade to drive the oscillating saw blade to oscillate.

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