Tool bit structure, swing saw blade, swing saw assembly and swing saw device

Abstract

The application discloses a tool bit structure, a swing saw blade, a swing saw assembly and a swing saw device. The tool bit structure comprises a cutting part and a tool bit body. The tool bit body is connected to the cutting part. The tool bit body and the cutting part cooperate to form a first chip groove. The first chip groove is located at the connection between the cutting part and the tool bit body. The first chip groove is located on one side of the tool bit body along the thickness direction. The width of the first chip groove gradually increases along the depth direction of the first chip groove and away from the connection between the cutting part and the tool bit body. Compared with the tool bit structure in the related art, the tool bit structure of the application sets the first chip groove at the connection between the cutting part and the tool bit body. The width of the first chip groove gradually increases along the depth direction. A flared chip removal channel is formed. The chip removal space is significantly increased. The bone chips generated during the cutting process can be quickly and smoothly removed. The risk of accumulation and blockage of the bone chips in the cutting area is effectively reduced. The chip removal efficiency is improved.

Description

Technical Field

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

[0002] In orthopedic surgery, bone tissue is typically cut using an oscillating saw. An oscillating saw generally consists of an oscillating saw assembly and a drive assembly. The drive assembly drives the oscillating saw blade of the oscillating saw assembly to oscillate back and forth at high frequency, thereby cutting the bone tissue. The saw blade's head structure usually has chip removal grooves for chip removal. However, in related technologies, the chip removal grooves in the saw head structure are relatively small, thus affecting chip removal efficiency. Utility Model Content

[0003] This application provides a blade head structure, 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 cutting head structure, including:

[0005] Cutting part; and

[0006] The cutter head body is connected to the cutting part. The cutter head body and the cutting part cooperate to form a first chip removal groove. The first chip removal groove is located at the connection between the cutting part and the cutter head body, and the first chip removal groove is located on one side of the cutter head body along its thickness direction. Along the depth direction of the first chip removal groove and away from the connection between the cutting part and the cutter head body, the width of the first chip removal groove gradually increases.

[0007] In some embodiments, the first chip removal groove extends along the length of the cutter head body.

[0008] In some embodiments, the cutter head body includes a first connecting portion and a second connecting portion, the first connecting portion being connected between the cutting portion and the second connecting portion, and the cutting portion, the first connecting portion and the second connecting portion cooperating to form a first chip removal groove;

[0009] The second connecting part is provided with a first chamfered bevel, which forms part of the groove wall of the first chip removal groove.

[0010] In some embodiments, the cutting part includes a plurality of first cutting teeth and a plurality of second cutting teeth arranged sequentially along the length direction of the first connecting part. The plurality of first cutting teeth and the plurality of second cutting teeth are all connected to the first connecting part. The plurality of first cutting teeth and the plurality of second cutting teeth are arranged alternately in sequence. Each first cutting tooth is inclined in one direction of the thickness direction of the cutter head body, and each second cutting tooth is inclined in another direction of the thickness direction of the cutter head body. The second cutting tooth cooperates with two adjacent first cutting teeth to form a chip guide channel. Each chip guide channel is connected to the first chip discharge groove.

[0011] In some embodiments, the end of the first cutting tooth is provided with a first cutting plane, and the end of the second cutting tooth is provided with a second cutting plane. The second cutting plane is arranged parallel to the first cutting plane and is located on opposite sides of the cutting portion.

[0012] In some embodiments, the first cutting tooth has a first inclined plane connected to the first cutting plane at one end near the cutter head body, and the first inclined plane constitutes part of the groove wall of the first chip removal groove.

[0013] In some embodiments, the end of the second cutting tooth near the end of the cutter head body is provided with a second inclined plane connected to the second cutting plane, and the second connecting part is provided with a second chamfered surface. The second inclined plane, the first connecting part and the second chamfered surface cooperate to form a second chip removal groove. The second chip removal groove and the first chip removal groove are respectively located on opposite sides of the cutter head structure.

[0014] Secondly, embodiments of this application provide a sway saw blade, comprising:

[0015] Main structure; and

[0016] The cutter head structure of any of the above embodiments is connected to one end of the main body structure.

[0017] Thirdly, embodiments of this application provide a oscillating saw assembly, including:

[0018] A sheath plate, the sheath plate having a receiving cavity and an opening communicating with the receiving cavity; and

[0019] In any of the above embodiments of the oscillating saw blade, one end of the main body structure is oscillatingly disposed within the receiving cavity, and the other end of the main body structure protrudes from the opening so that the cutting head structure is located outside the receiving cavity.

[0020] Fourthly, embodiments of this application provide a oscillating saw device, including:

[0021] The oscillating saw assembly of any of the above embodiments; and

[0022] A drive assembly is connected to the oscillating saw blade to drive the oscillating saw blade to oscillate.

[0023] The blade head structure, oscillating saw blade, oscillating saw assembly, and oscillating saw device provided in this application include a cutting section and a blade head body. The blade head body is connected to the cutting section, and the blade head body and the cutting section cooperate to form a first chip removal groove. The first chip removal groove is located at the connection between the cutting section and the blade head body, and is located on one side of the blade head body along its thickness direction. Along the depth direction of the first chip removal groove and away from the connection between the cutting section and the blade head body, the width of the first chip removal groove gradually increases. Thus, compared with the blade head structure in related technologies, the blade head structure of this application, by setting a first chip removal groove at the connection between the cutting section and the blade head body, and making the width of the first chip removal groove gradually increase along its depth direction, forms a flared chip removal channel, which significantly increases the chip removal space. This facilitates the rapid and smooth removal of bone chips generated during the cutting process, effectively reducing the risk of bone chips accumulating and clogging in the cutting area, and improving chip removal efficiency. In addition, the blade head structure has good chip removal performance, which can reduce the saw blade jamming or overheating caused by poor chip removal during surgery, ensuring the stability and safety of the oscillating saw device operation. Moreover, a larger space for chip removal helps bone chips to be removed quickly, forming a clear cutting field, which helps doctors to accurately control the surgical operation, improves surgical efficiency and precision, and reduces surgical risks. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the cutter head structure provided in an embodiment of this application.

[0026] Figure 2 for Figure 1 A schematic diagram of the cutter head structure from another perspective.

[0027] Figure 3 This is a schematic diagram of the structure of the oscillating saw blade provided in an embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the oscillating saw assembly provided in an embodiment of this application.

[0029] Explanation of icon numbers:

[0030] 10. Saw head structure; 20. Main body structure; 30. Oscillating saw blade; 40. Sheath plate; 50. Oscillating saw blade assembly; 100. Cutting part; 101. Chip guide channel; 110. First cutting tooth; 111. First cutting plane; 112. First inclined plane; 120. Second cutting tooth; 121. Second cutting plane; 122. Second inclined plane; 200. Saw head body; 201. First chip removal groove; 202. Second chip removal groove; 210. First connecting part; 220. Second connecting part; 221. First chamfered bevel; 222. Second chamfered bevel.

[0031] 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

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Please see Figure 1 and Figure 2This application provides a cutting head structure 10, which may include a cutting part 100 and a cutting head body 200. The cutting head body 200 is connected to the cutting part 100. The cutting head body 200 and the cutting part 100 cooperate to form a first chip removal groove 201. The first chip removal groove 201 is located at the connection between the cutting part 100 and the cutting head body 200, and the first chip removal groove 201 is located on one side of the cutting head body 200 along its thickness direction. Along the depth direction of the first chip removal groove 201 and away from the connection between the cutting part 100 and the cutting head body 200, the width of the first chip removal groove 201 gradually increases.

[0037] Thus, compared with the cutting head structure in related technologies, the cutting head structure 10 of this application provides a first chip removal groove 201 at the connection between the cutting part 100 and the cutting head body 200, and the width of the first chip removal groove 201 gradually increases along its depth direction to form a flared chip removal channel, which significantly increases the chip removal space, which is conducive to the rapid and smooth discharge of bone chips generated during the cutting process, effectively reduces the risk of bone chips accumulating and clogging in the cutting area, and improves chip removal efficiency.

[0038] In addition, the blade structure 10 has good chip removal performance, which can reduce saw blade jamming or overheating caused by poor chip removal during surgery, and ensure the stability and safety of the swing saw device.

[0039] Moreover, a larger space for chip removal helps bone chips to be removed quickly, forming a clear cutting field, which helps doctors to accurately control the surgical operation, improves surgical efficiency and precision, and reduces surgical risks.

[0040] The cutting section 100 is located at the front end of the cutter head and performs the actual cutting function on bone tissue. The edge of the cutting section 100 has multiple cutting teeth for efficient bone removal. The cutter head body 200 is located at the rear end of the cutting section 100 and connects to the drive assembly of the oscillating saw device, transmitting power and supporting the entire cutter head structure 10. The cutting section 100 and the cutter head body 200 together form a first chip removal groove 201 in the connection area. The first chip removal groove 201 is located at the junction of the cutting section 100 and the cutter head body 200, serving as the main channel for bone chips to be discharged outward from the cutting area.

[0041] The first chip removal groove 201 can be a streamlined chip removal channel similar to a trumpet shape. The gradually widening first chip removal groove 201 can accommodate more bone chips generated during cutting, reduce the mutual compression between bone chips, and reduce the risk of blockage.

[0042] In some embodiments, the first chip removal groove 201 extends along the length of the cutter head body 200, forming a through-type chip removal channel, so that the chip removal path is coordinated with the reciprocating motion direction of the oscillating saw blade 30. During the cutting process, the bone chips are guided into the chip removal groove as the blade swings back and forth, and are smoothly discharged from the cutting area along the length direction, avoiding local accumulation.

[0043] In addition, the first chip removal groove 201 is disposed on one side of the thickness direction of the blade body 200, and combined with the extension layout of the first chip removal groove 201 along the length direction of the blade body 200, a continuous and open chip removal channel is formed on one side of the blade structure 10, which makes the blade structure 10 easy to process and manufacture, and at the same time facilitates the introduction of liquid irrigation medium and the coordinated removal of bone chips during the operation.

[0044] In some embodiments, the cutter head body 200 includes a first connecting portion 210 and a second connecting portion 220. The first connecting portion 210 is connected between the cutting portion 100 and the second connecting portion 220. The cutting portion 100, the first connecting portion 210 and the second connecting portion 220 cooperate to form a first chip removal groove 201.

[0045] The second connecting portion 220 is provided with a first chamfered bevel 221, which is located on the side edge of the second connecting portion 220 near the first connecting portion 210. The first chamfered bevel 221 forms part of the groove wall of the first chip removal groove 201. The first chamfered bevel 221 extends obliquely from the edge of the first connecting portion 210 outwards from the chip removal groove, and smoothly connects with the groove wall formed by the first connecting portion 210 and the cutting portion 100, together constructing a chip removal channel that gradually widens from narrow to wide.

[0046] The design of the inclination direction and angle of the first chamfered bevel 221 further widens the first chip removal groove 201 in the area near the second connecting portion 220, significantly enhancing the flaring effect of the first chip removal groove 201, increasing the outlet cross-sectional area of ​​the first chip removal groove 201, and improving the chip removal capacity per unit time. At the same time, the first chamfered bevel 221 can guide the bone chips to slide smoothly out along the bevel, reducing the collision and friction between the bone chips and the first chamfered bevel 221, and avoiding jamming or accumulation caused by abrupt corner changes.

[0047] The cutting section includes multiple first cutting teeth 110 and multiple second cutting teeth 120, which are arranged sequentially along the length of the first connecting portion 210. The multiple first cutting teeth 110 and multiple second cutting teeth 120 are all fixedly connected to the front end region of the first connecting portion 210, forming the cutting working surface of the tool head structure 10. The first cutting teeth 110 and the second cutting teeth 120 are arranged in an alternating pattern in spatial layout, that is, one first cutting tooth 110 is followed by one second cutting tooth 120, and the two are arranged in a cyclical manner to form a continuous bidirectional inclined cutting tooth array.

[0048] Each of the first cutting teeth 110 is inclined to one side of the cutter head body 200 in the thickness direction of the mounting direction. Each of the second cutting teeth 120 is inclined in the opposite direction to the thickness direction of the cutter head body 200, opposite to the inclination direction of the first cutting teeth 110. This symmetrical reverse inclination structure design enables the cutting part 100 to achieve effective cutting in both the forward and reverse strokes during the reciprocating motion of the oscillating saw blade 30, improving the overall cutting efficiency and surface smoothness.

[0049] A second cutting tooth 120 is provided between two adjacent first cutting teeth 110, and the second cutting tooth 120 is located in the recessed area between the two first cutting teeth 110. The second cutting tooth 120 and the first cutting teeth 110 on both sides form a partially recessed and independent chip guide channel 101. Each chip guide channel 101 is structurally enclosed by two inclined sides of the first cutting teeth 110 and one oppositely inclined side of the second cutting tooth 120.

[0050] Each chip guide channel 101 is spatially connected to the first chip removal groove 201, with the outlet end of the chip guide channel 101 facing the inlet area of ​​the first chip removal groove 201. During the cutting process, bone chips are first stripped from the bone tissue by the first cutting teeth 110 and the second cutting teeth 120, and enter the chip guide channel 101 formed by the three teeth. Subsequently, under the high-frequency vibration and motion inertia of the oscillating saw blade 30, the bone chips are pushed from the chip guide channel 101 to the first chip removal groove 201, and discharged outward along the flared first chip removal groove 201.

[0051] The chip guide channels 101 enable local chip collection and directional guidance in the cutting area. Multiple chip guide channels 101 are evenly distributed along the cutting section 100, forming a "multi-point confluence" chip removal path with the first chip removal groove 201. This helps improve the transfer efficiency of bone chips from the cutting tip to the first chip removal groove 201, reduces the risk of bone chips being trapped between the cutting teeth, reduces the risk of frictional heat generation and local blockage, and ensures the continuity and stability of the cutting process.

[0052] Furthermore, the alternating inclined arrangement of the first cutting teeth 110 and the second cutting teeth 120 enhances the cutting balance of the cutting part 100 in bidirectional motion, reducing vibration and wobbling caused by unidirectional cutting forces. Moreover, the interconnected design of the chip guide channel 101 and the first chip removal groove 201 enables the cutter head structure 10 to achieve efficient cutting while also possessing excellent self-chip removal capabilities, which helps improve surgical safety.

[0053] The first cutting tooth 110 has a first cutting plane 111 at its end, and the second cutting tooth 120 has a second cutting plane 121 at its end. The first cutting plane 111 is located at the end of the first cutting tooth 110 away from the tooth root, forming its main cutting working surface, used to cut into bone tissue and achieve bone separation during the forward swing of the oscillating saw blade 30. The second cutting plane 121 is located at the end of the second cutting tooth 120, serving as the main cutting surface of the second cutting tooth 120, and undertakes the cutting task when the oscillating saw blade 30 swings in the reverse direction. The first cutting plane 111 and the second cutting plane 121 together constitute the functional basis for the bidirectional reciprocating cutting of the cutter head structure 10.

[0054] The first cutting plane 111 and the second cutting plane 121 are parallel to each other in space, meaning they maintain the same tilt angle or straight orientation. This ensures uniform distribution of cutting force and improves the stability of the cutting process. The first cutting plane 111 is located on one side of the cutting part 100, and the second cutting plane 121 is located on the other side of the cutting part 100. The two cutting planes are located on opposite sides of the cutting part 100 along its thickness direction. The symmetrical arrangement of the first cutting plane 111 and the second cutting plane 121 enables the tool tip to achieve efficient and stable cutting action in both forward and reverse oscillation strokes, avoiding vibration or uneven wear caused by asymmetrical cutting forces.

[0055] Since the first cutting plane 111 and the second cutting plane 121 are parallel to each other in space, the bone incision formed in the bone tissue is relatively flat during the bone tissue cutting process. This helps to reduce the step-like or wavy cut surface that may be formed during cutting, making the final bone incision straighter and smoother, reducing postoperative stress concentration at the bone ends, and facilitating subsequent fixation and healing.

[0056] After the bone chips generated during cutting are stripped off by the first cutting plane 111, they quickly enter the adjacent chip guide channel 101 and flow into the first chip removal groove 201. The entire chip removal path is seamlessly connected from the first cutting plane 111, the chip guide channel 101, and the first chip removal groove 201, or the bone chips can fall directly from the first cutting plane 111 into the first chip removal groove 201, thereby significantly improving the transfer efficiency and discharge speed of the bone chips.

[0057] The first cutting tooth 110 has a first inclined plane 112 at one end near the cutter head body 200, and the first inclined plane 112 is directly connected to the root region of the first cutting plane 111. The first inclined plane 112 is located at the transition position between the first cutting tooth 110 and the first connecting portion 210, and extends obliquely from the end of the first cutting plane 111 to the cutter head body 200, forming a continuous geometric connection. The setting of the first inclined plane 112 not only enhances the stress transition capability at the root of the cutting tooth, but also participates in constructing the front end structure of the first chip removal channel.

[0058] The first inclined plane 112 is inclined inward at a preset angle along the thickness direction of the cutter head body 200, and its inclination direction is consistent with the extension path of the first chip removal groove 201. The first inclined plane 112 forms a partial groove wall of the first chip removal groove 201, serving as the inlet guide section of the chip removal channel, directly facing the cutting area. During the reciprocating motion of the oscillating saw blade 30, after the bone chips are stripped from the first cutting plane 111, the bone chips can enter the space guided by the first inclined plane 112 and slide along the first cutting plane 111 into the main body area of ​​the first chip removal groove 201, achieving rapid discharge.

[0059] The first inclined plane 112 and the first cutting plane 111 form a continuous, smooth transition surface or fold. They are not perpendicularly connected in space, creating a flow-guiding structure that facilitates chip removal. This avoids the dead-angle areas easily formed in traditional right-angle transition structures, reducing chip retention and accumulation at the root of the cutting teeth. The first inclined planes 112 of multiple first cutting teeth 110 are arranged sequentially along the length of the cutting head, forming a continuous chip-guiding inlet band, improving the overall chip removal response speed and smoothness.

[0060] The end of the second cutting tooth 120 near the cutter head body 200 has a second inclined plane 122, which is directly connected to the root region of the second cutting plane 121. The second inclined plane 122 is located at the transition position between the second cutting tooth 120 and the first connecting portion 210, extending obliquely from the end of the second cutting plane 121 into the interior of the cutter head body 200, forming a continuous geometric connection. The second inclined plane 122 not only enhances the stress transition capability at the root of the second cutting tooth 120, but also participates in the construction of the second chip removal groove 202 located on the other side of the cutter head structure 10.

[0061] The second connecting portion 220 is provided with a second chamfered bevel 222. The second chamfered bevel 222 is located on one edge of the second connecting portion 220 near the first connecting portion 210, opposite to the aforementioned first chamfered bevel 221, but on the other side of the cutter head structure 10. The second chamfered bevel 222 extends outward from the surface of the second connecting portion 220 at a specific angle, forming the rear section of the groove wall of the second chip removal groove 202. The first connecting portion 210 forms an intermediate support surface in the corresponding area on this side, which, together with the second inclined plane 122 and the second chamfered bevel 222, encloses the second chip removal groove 202.

[0062] The second inclined plane 122, the corresponding sidewall of the first connecting part 210, and the second chamfered inclined surface 222 work together to form the second chip removal groove 202. The second chip removal groove 202 is located on the other side of the cutter head structure 10 along the thickness direction. Its starting end is located at the root of the second cutting tooth 120, and it extends towards the second connecting part 220, penetrating the connecting area from the cutting part 100 to the front end of the cutter head body 200. The second chip removal groove 202 gradually increases in width along its depth direction, forming a flared chip removal channel, which is conducive to the smooth discharge of bone chips from the cutting area to the outside.

[0063] The second chip removal groove 202 and the first chip removal groove 201 are respectively arranged on opposite sides of the cutter head structure 10, that is, symmetrically distributed along the thickness direction of the cutter head body 200. The first chip removal groove 201 is composed of the first cutting tooth 110, the first connecting part 210, and the first chamfered slope 221 of the second connecting part 220, and is located on one side of the cutter head; the second chip removal groove 202 is composed of the second cutting tooth 120, the other side of the first connecting part 210, and the second chamfered slope 222 of the second connecting part 220, and is located on the other side of the cutter head. The two chip removal grooves are structurally independent, but functionally they work together to form a dual-sided synchronous chip removal mechanism.

[0064] During the high-frequency reciprocating motion of the oscillating saw blade 30, when the first cutting tooth 110 performs a cutting action upwards, the generated bone chips are mainly discharged through the first chip removal groove 201; when the second cutting tooth 120 performs a cutting action upwards, the generated bone chips are discharged through the second chip removal groove 202. Since the cutter head structure 10 has independent and flared chip removal channels on both opposite sides, the bone chips can be discharged nearby at the first moment of cutting, avoiding accumulation during cutting and significantly improving the overall chip removal efficiency.

[0065] The dual-sided chip removal groove structure also enhances the adaptability of the blade in complex surgical environments. During inclined or deep cutting operations, regardless of which side of the blade faces upwards in the field of vision, one side of the chip removal groove is always in a favorable chip removal position, ensuring continuous removal of bone fragments. This effectively reduces problems such as increased cutting resistance, temperature rise, or obstruction of the field of vision caused by unilateral chip removal obstruction.

[0066] Please see Figure 3 This application provides a oscillating saw blade 30, which includes a main structure 20 and a cutter head structure 10 as described in any of the above embodiments. The cutter head structure 10 is connected to one end of the main structure 20. The main structure 20 constitutes the main load-bearing part of the oscillating saw blade 30, providing structural support and power transmission functions. The other end of the main structure 20 is provided with a connection interface for detachable or fixed connection with the drive component of the oscillating saw device to ensure stable power input; the other end is used to install the cutter head structure 10 to achieve integrated cutting function.

[0067] The cutter head structure 10 and the main body structure 20 can be connected by welding, integral molding, or mechanical fixing to ensure that the connection strength and rigidity meet the requirements of high-frequency reciprocating motion. In the connection area, the cutter head body 200 and the main body structure 20 transition smoothly to avoid stress concentration and improve the fatigue resistance of the overall structure. The material of the main body structure 20 can be high-strength stainless steel or titanium alloy.

[0068] Please see Figure 4 This application provides a oscillating saw assembly, which may include a sheath plate 40 and an oscillating saw blade 30 as described in any of the above embodiments. The sheath plate 40 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 30. The receiving cavity is used to accommodate a part of the main body structure 20 of the oscillating saw blade 30, providing structural support and motion guidance, while the opening serves as a channel for the movement of the main body structure 20, allowing the main body structure 20 to oscillate back and forth within a certain range.

[0069] One end of the main body structure 20 is oscillatingly disposed within the receiving cavity, while the other end extends through an opening so that the cutting head structure 10 is located outside the receiving cavity. Specifically, one end of the main body structure 20 of the oscillating saw blade 30 is oscillatingly disposed within the receiving cavity and is movably connected to the sheath plate 40 via a pin, hinge structure, or elastic connector, allowing the main body structure 20 to oscillate at a high frequency around the connection point under the action of driving force. The other end of the main body structure 20 extends through the opening to the outside of the sheath plate 40, with the cutting head structure 10 located outside the receiving cavity and exposed to the external environment to achieve direct cutting of bone tissue. The sheath plate 40 limits, guides, and protects the movement of the oscillating saw blade 30, preventing lateral deviation or excessive displacement of the cutting head structure 10 during oscillation, thereby improving cutting accuracy and surgical safety.

[0070] The sheath plate 40 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.

[0071] This application provides a swing saw device, which includes a drive assembly and a swing saw assembly according to any of the above embodiments. The drive assembly is disposed at one end of the sheath plate 40 or integrated with the sheath plate 40. The output end of the drive assembly is connected to the main body structure 20 of the swing saw blade 30 through a transmission mechanism, transmitting the driving force to the swing saw blade 30. 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 30 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 40 constrains and guides the movement path of the swing saw blade 30, preventing lateral displacement or vibration of the cutter head structure 10 during oscillation, thereby improving cutting accuracy and operational safety.

[0072] 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.

[0073] 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 blade head structure, characterized in that, include: Cutting section; as well as The cutter head body is connected to the cutting part. The cutter head body and the cutting part cooperate to form a first chip removal groove. The first chip removal groove is located at the connection between the cutting part and the cutter head body, and the first chip removal groove is located on one side of the cutter head body along its thickness direction. Along the depth direction of the first chip removal groove and away from the connection between the cutting part and the cutter head body, the width of the first chip removal groove gradually increases.

2. The cutter head structure according to claim 1, characterized in that, The first chip removal groove extends along the length of the cutter head body.

3. The cutter head structure according to claim 1, characterized in that, The cutter head body includes a first connecting part and a second connecting part. The first connecting part is connected between the cutting part and the second connecting part. The cutting part, the first connecting part, and the second connecting part cooperate to form a first chip removal groove. The second connecting part is provided with a first chamfered bevel, which forms part of the groove wall of the first chip removal groove.

4. The cutter head structure according to claim 3, characterized in that, The cutting part includes a plurality of first cutting teeth and a plurality of second cutting teeth arranged sequentially along the length direction of the first connecting part. The plurality of first cutting teeth and the plurality of second cutting teeth are all connected to the first connecting part. The plurality of first cutting teeth and the plurality of second cutting teeth are arranged alternately in sequence. Each first cutting tooth is inclined in one direction of the thickness direction of the cutter head body, and each second cutting tooth is inclined in another direction of the thickness direction of the cutter head body. The second cutting tooth cooperates with two adjacent first cutting teeth to form a chip guiding channel. Each chip guiding channel is connected to the first chip discharge groove.

5. The cutter head structure according to claim 4, characterized in that, The first cutting tooth has a first cutting plane at its end, and the second cutting tooth has a second cutting plane at its end. The second cutting plane is parallel to the first cutting plane and is located on opposite sides of the cutting part.

6. The cutter head structure according to claim 5, characterized in that, The first cutting tooth has a first inclined plane connected to the first cutting plane at one end near the cutter head body, and the first inclined plane constitutes part of the groove wall of the first chip removal groove.

7. The cutter head structure according to claim 5, characterized in that, The end of the second cutting tooth near the end of the cutter head body is provided with a second inclined plane connected to the second cutting plane, and the second connecting part is provided with a second chamfered surface. The second inclined plane, the first connecting part and the second chamfered surface cooperate to form a second chip removal groove. The second chip removal groove and the first chip removal groove are respectively located on opposite sides of the cutter head structure.

8. A oscillating saw blade, characterized in that, include: Main structure; as well as The cutting head structure as described in any one of claims 1 to 7, wherein the cutting head structure is connected to one end of the main body structure.

9. A oscillating saw assembly, characterized in that, include: A sheath plate, the sheath plate having a receiving cavity and an opening communicating with the receiving cavity; as well as As described in claim 8, one end of the main body structure is oscillatingly disposed within the receiving cavity, and the other end of the main body structure extends through the opening so that the cutting head structure 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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