A medical oscillating saw

Abstract

The present invention belongs to the technical field of medical devices, and discloses a medical oscillating saw instrument. The medical oscillating saw instrument of the present invention comprises: an oscillating saw body, the oscillating saw body comprises an oscillating saw housing and a saw blade connected to the driving end of the oscillating saw housing; a guide assembly, the guide assembly is located below the saw blade and is slidably connected to the driving end, the first end of the guide assembly is arranged in the oscillating saw housing, and the second end of the guide assembly is used to abut against the surface of the bone; and a driving device, the driving device is fixed in the oscillating saw housing, and the driving end of the driving device is arranged to be controllably connected to and disengaged from the first end. In the initial state of the medical oscillating saw instrument, the distance between the second end of the guide assembly and the driving end is greater than the distance between the sawtooth end of the saw blade and the driving end. The medical oscillating saw instrument of the present invention can improve the stability during osteotomy.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical oscillating saw device. Background Art

[0002] As a medical device used for surgical operations in hospitals, the medical oscillating saw has the advantages of beautiful appearance, small size, light weight, easy to carry, safe operation and shortened operation time. The medical oscillating saw usually includes: an oscillating saw housing; and a motor arranged inside the oscillating saw housing; an eccentric shaft eccentrically arranged on the rotor part of the motor; a swing shaft arranged with the axis perpendicular to the eccentric shaft; a fork connected to the eccentric shaft at one end and the swing shaft at the other end; and a saw blade fixedly arranged on the swing shaft. During operation, the motor drives the eccentric shaft to rotate, the eccentric shaft drives the fork to swing, and the fork drives the saw blade to swing at the same time, so that the saw blade can swing at high speed within a smaller stroke range relative to the oscillating saw housing to realize the cutting function of the oscillating saw.

[0003] Medical oscillating saws in the prior art usually encounter the following problems during osteotomy: 1) Due to the high-speed swinging of the saw blade, when the saw blade contacts the surface to be osteotomized, it often slips, which can easily cause inaccurate initial positioning of the osteotomy; 2) During the osteotomy process, the saw blade is prone to vibrate due to its own length, which can easily cause the problem of osteotomy position deviation, resulting in an uneven osteotomy surface; 3) When the saw blade vibrates and causes the osteotomy direction to deviate, the doctor needs to make necessary pauses or adjustments, which also prolongs the operation time and increases the patient's pain. Summary of the invention

[0004] In order to solve all or part of the above problems, the present invention aims to provide a medical oscillating saw instrument to improve the stability during osteotomy.

[0005] The medical oscillating saw device of the present invention comprises: an oscillating saw body, the oscillating saw body comprises an oscillating saw housing and a saw blade connected to the driving end of the oscillating saw housing; a guide assembly, the guide assembly is located below the saw blade and is slidably connected to the driving end, the first end of the guide assembly is arranged in the oscillating saw housing, and the second end of the guide assembly is used to abut against the surface of the bone; and a driving device, the driving device is fixed in the oscillating saw housing, and the driving end of the driving device is arranged to be controllably connected to and disengaged from the first end. In the initial state of the medical oscillating saw device, the distance between the second end of the guide assembly and the driving end is greater than the distance between the sawtooth end of the saw blade and the driving end, and in the use state of the medical oscillating saw device, the driving end of the driving device is controlled to be connected to the first end, and the guide assembly can be driven by the driving device to move parallel to the length direction of the saw blade and close to the driving end.

[0006] Furthermore, the driving device includes: a driving guide rail fixedly connected to the oscillating saw housing, the driving end of the driving guide rail being controllably connected to and disconnected from the first end; and a first elastic component having one end fixedly connected to the side wall of the oscillating saw housing and the other end fixedly connected to the guide assembly; wherein the first elastic component is constructed such that when the driving end of the driving guide rail is disconnected from the first end, the guide assembly can be reset to its initial position by its own elasticity.

[0007] Furthermore, the driving end of the driving guide rail is controllably connected to and disconnected from the first end portion by means of mechanical connection or electromagnetic attraction.

[0008] Furthermore, the guide assembly includes: a shell body that is slidably arranged in the outer shell of the oscillating saw along a length direction parallel to the saw blade, and the driving device and the first elastic component are both connected to the shell body; and a plurality of guide slide bars, one end of which is connected to the shell body and the other end passes through the driving end portion and is used to abut against the surface of the bone, each guide slide bar is slidably connected to the driving end portion and is parallel to the saw blade; wherein the abutting ends of each guide slide bar are on a straight line, or the connecting line of the abutting ends of each guide slide bar is constructed as a curve that matches the surface shape of the bone.

[0009] Furthermore, the guide assembly also includes: a plurality of second elastic components arranged in the shell for connecting each guide slide bar and the shell, each second elastic component corresponding to each guide slide bar one by one; and a locking component arranged in the shell for fixing the position of the guide slide bar; wherein each second elastic component is constructed to be compressible by the corresponding guide slide bar so as to adaptively change the position of the abutting end of the guide slide bar, and the locking component is configured to fix each guide slide bar after the abutting end of each guide slide bar changes position.

[0010] Furthermore, the sum of the elastic forces of the second elastic components is smaller than the elastic force of the first elastic component.

[0011] Furthermore, the locking assembly includes a support seat arranged in the shell and used to support each guide slide rod, and a locking portion arranged above each guide slide rod opposite to the support seat, wherein the locking portion is configured to be connected to the support seat by mechanical connection or electromagnetic attraction to clamp and fix the guide slide rod.

[0012] Furthermore, a rough surface is formed on the outer peripheral wall of the guide slide rod.

[0013] Furthermore, the abutting end of the guide slide rod is constructed as a tip structure or a suction cup structure.

[0014] Furthermore, the guide slide rod is constructed as a solid structure with a circular or rectangular cross-section.

[0015] Compared with the prior art, the medical oscillating saw device of the embodiment of the present invention has the guide assembly connected to and abutting against the bone before the saw blade swings at high speed to achieve osteotomy, thereby achieving good positioning of the medical oscillating saw device and the bone surface. In this way, the saw blade will not slip when it contacts the surface of the bone and starts osteotomy, thereby effectively avoiding the problem of inaccurate initial positioning of the osteotomy and the problem of osteotomy position deviation, thereby effectively ensuring the flatness of the osteotomy surface. In addition, the doctor does not need to make necessary pauses or adjustments due to the deviation of the osteotomy direction caused by the saw blade, which not only shortens the operation time, but also alleviates the pain of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a medical oscillating saw apparatus according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 The structural schematic diagram of the first embodiment of the medical oscillating saw instrument is shown;

[0018] Figure 3 for Figure 1 The schematic structural diagram of the second embodiment of the medical oscillating saw instrument is shown. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the present invention, a medical oscillating saw device of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] Figures 1 to 3 FIG. 2 shows the structure of a medical oscillating saw apparatus 100 according to an embodiment of the present invention. Figures 1 to 3 As shown, the medical oscillating saw instrument 100 includes: an oscillating saw body 10, the oscillating saw body 10 includes an oscillating saw housing 1 and a saw blade 4 connected to a driving end 11 of the oscillating saw housing 1; a guide assembly 20, the guide assembly 20 is located below the saw blade 4 and is slidably connected to the driving end 11, the first end 201 of the guide assembly 20 is arranged in the oscillating saw housing 1, and the second end 202 of the guide assembly 4 is used to abut against the surface of the bone; and a driving device 30, the driving device 30 is fixed in the oscillating saw housing 1, and the driving end of the driving device 30 is arranged to be controllably connected to and disconnected from the first end 201. Among them, in the initial state of the medical oscillating saw instrument 100, the distance between the second end 202 of the guide assembly 20 and the driving end 11 is greater than the distance between the saw tooth end of the saw blade 4 and the driving end 11. In the use state of the medical oscillating saw instrument 100, the driving end of the control drive device 30 is connected to the first end 201, and the guide assembly 20 can be driven by the drive device 30 to move parallel to the length direction of the saw blade 4 and close to the driving end 11.

[0021] When the medical oscillating saw device 100 of the embodiment of the present invention is used, first, before the medical oscillating saw device 100 is started, that is, in the initial state of the medical oscillating saw device 100, the sawtooth end of the saw blade 4 is directed toward and aligned with the surface of the bone to be cut, and the second end 202 of the guide assembly 20 is pressed against the surface of the bone. Since the distance between the second end 202 of the guide assembly 20 and the driving end 11 is greater than the distance between the sawtooth end of the saw blade 4 and the driving end 11, when the second end 202 of the guide assembly 20 is pressed against the surface of the bone, the saw blade 4 is not in contact with the bone temporarily. The second end 202 of the guide assembly 20 is pressed against the surface of the bone with force continuously, and the medical oscillating saw device 100 is turned on (that is, the operation button 5 of the medical oscillating saw device 100 is pressed), so that the saw blade 4 starts to swing. The medical oscillating saw instrument 100 of the embodiment of the present invention is configured to control the driving end of the driving device 30 to be connected to the guide assembly 20 when the medical oscillating saw instrument 100 is in use. The guide assembly 20 is driven by the driving device 30 to move parallel to the length direction of the saw blade 4 along the driving end 11, so that when the saw blade 4 swings, the guide assembly 20 can move along the driving end 11 along the feed of the saw blade 4. The relative movement of the two causes the saw tooth end of the saw blade 4 to gradually contact the surface of the bone under the continuous abutment of the guide assembly 20, and osteotomy begins to be achieved.

[0022] Through the above arrangement, compared with the prior art, the medical oscillating saw instrument 100 of the embodiment of the present invention has the guide assembly 20 connected to and abutting against the bone before the saw blade 4 swings at high speed to achieve osteotomy, thereby achieving good positioning of the medical oscillating saw instrument 100 and the bone surface. In this way, the saw blade 4 will not slip when it contacts the surface of the bone and starts osteotomy, thereby effectively avoiding the problem of inaccurate initial positioning of the osteotomy and the problem of osteotomy position deviation, thereby effectively ensuring the flatness of the osteotomy surface. In addition, the doctor does not need to make necessary pauses or adjustments due to the deviation of the osteotomy direction caused by the saw blade 4, which not only shortens the operation time, but also alleviates the pain of the patient.

[0023] It should be noted that the oscillating saw body 10 of the medical oscillating saw apparatus 100 of the embodiment of the present invention should also include an oscillating shaft 12 (combined with the oscillating saw body 100) disposed at the driving end 11 of the oscillating saw housing 1. Figure 2 and Figure 3As shown in the figure, the saw blade 4 is connected to the swing shaft parallel to the axis of the swing shaft 12. In addition, the swing saw body 10 should also include: a motor (not shown in the figure) arranged in the swing saw housing 1; an eccentric shaft (not shown in the figure) eccentrically arranged on the rotor part of the motor, and the axis of the swing shaft 12 is arranged perpendicular to the eccentric shaft; a fork (not shown in the figure) connected to the eccentric shaft at one end and the swing shaft 12 at the other end, and other structural components; a power module (not shown in the figure) arranged in the swing saw housing 1 and an electric control module such as an operation button 5 arranged on the swing saw housing 1 for controlling the power on and off of the motor.

[0024] exist Figure 2 and Figure 3 In the preferred embodiment shown, the driving device 30 may include: a driving rail 31 fixedly connected to the oscillating saw housing 1, the driving end of the driving rail 31 being controllably connected to and disconnected from the first end 201; and a first elastic component 32 (e.g., a spring) having one end fixedly connected to the side wall of the oscillating saw housing 1 and the other end fixedly connected to the guide assembly 20. The first elastic component 32 is configured to reset the guide assembly 20 to its initial position by its own elasticity when the driving end of the driving rail 31 is disconnected from the first end 201. The driving device 30 of the embodiment of the present invention can be controlled by an electric control system so that the driving end of the driving device 30 is connected to and disconnected from the first end 201. When used, the driving end of the driving device 30 is first located at the first position. When the medical oscillating saw instrument 100 is used, the driving device 30 is extended to the second position, i.e., the position of the guide assembly 20, by the control of the electric control system, and the driving device 30 is controlled to be connected to the first end 201 of the guide assembly 20. The guide assembly 20 is driven by the driving device 30 to move to the first position along the vicinity of the driving end 11. After the osteotomy is completed, the driving end of the control drive device 30 is disengaged from the first end 201 of the guide assembly 20, and the guide assembly 20 can be reset to the second position, that is, the initial position, under the compression state of the first elastic component 32, so as to enable the next use of the medical oscillating saw instrument 100 of the embodiment of the present invention.

[0025] In a preferred embodiment, the driving end of the driving rail 31 can be controllably connected to and disconnected from the first end 201 by mechanical connection or electromagnetic attraction.

[0026] In the first preferred embodiment, the driving end of the driving rail 31 can be controllably connected and disconnected with the first end 201 by means of mechanical connection. Specifically: a first strip-shaped slideway (not shown in the figure) can be formed on the surface of the oscillating saw housing 1. When the driving rail 31 is extended to the second position by the control of the electric control system, the operator can use a fixing bolt to fix the driving end of the driving rail 31 with the first end 201 of the guide assembly 20 through the first strip-shaped slideway. In the process of the driving rail 31 driving the guide assembly 20 to move, the fixing bolt can move along the first strip-shaped slideway. When the osteotomy is completed, the fixing bolt is removed through the first strip-shaped slideway to achieve the separation of the driving rail 31 from the first end 201 of the guide assembly 20.

[0027] In a second preferred embodiment, the driving end of the driving guide rail 31 can be controllably connected and disconnected with the first end 201 by electromagnetic attraction. Specifically: the driving end of the driving guide rail 31 can be switched on and off to form an electrical connection with the power module. When the driving guide rail 31 is extended to the second position by the control of the electric control system, the driving end of the driving guide rail 31 is energized so that the driving end generates an electromagnetic field. The material of the position area of ​​the first end 201 of the guide assembly 20 connected to the driving end of the driving guide rail 31 is selected as a ferromagnetic material, so that the driving end can be fixed by attraction with the guide assembly 20, thereby realizing the connection between the two. When the osteotomy is completed, the driving end of the driving guide rail 31 is controlled to be powered off so that the electromagnetic field disappears, thereby realizing the separation of the driving guide rail 31 from the first end 201 of the guide assembly 20.

[0028] It should be noted that in the embodiment where the driving end of the driving guide rail 31 is controllably connected and disconnected with the first end 201 by electromagnetic attraction, the extension of the driving guide rail 31 to the second position, the control of the power on and off of the driving end of the driving guide rail 31, the swinging of the saw blade 4, and the driving guide rail 31 driving the guide assembly 20 to move can be controlled by different operation buttons, or by the same operation button 5. The specific control logic when controlled by the same operation button 5 is: it can be controlled separately by the number of times the operation button 5 is pressed; or when the operation button 5 is continuously pressed, the driving guide rail 31 is first extended to the first end 201 of the guide assembly 20, and then the driving end generates an electromagnetic field so that the driving guide rail 31 is attracted and connected with the first end 201 of the guide assembly 20, and then the saw blade 4 starts to swing while the driving guide rail 31 drives the guide assembly 20 to move.

[0029] exist Figure 2 and Figure 3In the preferred embodiment shown, the guide assembly 20 may include: a housing 21 slidably disposed in the oscillating saw housing 1 along a length direction parallel to the saw blade 4, the driving device 30 and the first elastic component 32 are both connected to the housing 21; and a plurality of guide slide bars 22, one end of which is connected to the housing 21, and the other end passes through the driving end 11 and is used to abut against the surface of the bone, each guide slide bar 22 being slidably connected to the driving end 11 and parallel to the saw blade 4. The abutting ends of each guide slide bar 22 may be in a straight line, or the connecting line of the abutting ends of each guide slide bar 22 may be constructed as a curve that matches the surface shape of the bone. Through this arrangement, when the abutting ends of each guide slide bar 22 are in a straight line, the guide slide bar 22 can quickly abut against the surface of the bone, thereby effectively improving the efficiency of osteotomy. When the connecting line of the abutting ends of each guide slide bar 22 is constructed as a curve that matches the surface shape of the bone, the abutting end of the guide slide bar 22 can form a better fit with the bone surface, thereby avoiding the problem of poor abutment stability caused by the uneven surface of the bone. In other words, the matching curve can effectively improve the abutment stability, thereby improving the guiding stability effect of the medical oscillating saw instrument 100 during osteotomy according to the embodiment of the present invention.

[0030] Preferably, a slide groove structure (not shown in the figure) can be formed at the position of the driving end 11 below the saw blade 4, and each guide slide bar 22 forms a sliding fit with the slide groove structure. Of course, the guide slide bar 22 can also be replaced by a guide slide plate that slides with the slide groove structure, which will not be repeated here.

[0031] Preferably, if Figure 2 and Figure 3 As shown, the guide assembly 20 may also include: a plurality of second elastic components 23 arranged in the shell 21 for connecting each guide slide 22 and the shell 21, each second elastic component 23 corresponding to each guide slide 22 one by one; and a locking component 24 arranged in the shell 21 for fixing the position of the guide slide 22; wherein each second elastic component 23 may be constructed to be capable of being compressed by the corresponding guide slide 22 so as to adaptively change the position of the abutting end of the guide slide 22, and the locking component 24 may be configured to be capable of fixing each guide slide 22 after the abutting end of each guide slide 22 changes position.

[0032] Before the medical oscillating saw instrument 100 is started, that is, in the initial state of the medical oscillating saw instrument 100, the sawtooth end of the saw blade 4 is directed toward and aligned with the surface of the bone to be cut, and the abutting end of each guide slide bar 22 is abutted against the surface of the bone. By abutting the guide slide bar 22 with force, each guide slide bar 22 can compress the corresponding second elastic component 23 (such as a spring), so that the abutting end of each guide slide bar 22 can be formed into a curve that is more in line with and matches the surface of the bone. Then, the locking assembly 24 is fixed to fix each guide slide bar 22 so that the position of the abutting end is no longer changed. Through this setting, the abutting end of each guide slide bar 22 can be easily and quickly adapted to the surface of the bone, thereby effectively improving the stability of the abutment between the guide slide bar 22 and the bone surface.

[0033] It should be noted that when the guide assembly 20 changes the position of each abutting end through the second elastic component 23, it can be done after the drive rail 31 is connected to the housing 21, so that the housing 21 does not move when the guide assembly 20 compresses each second elastic component 23, thereby ensuring that the distance between the second end 202 of the guide assembly 20 and the driving end 11 is greater than the distance between the sawtooth end of the saw blade 4 and the driving end 11. Of course, it can be seen from the following that when the guide assembly 20 changes the position of each abutting end through the second elastic component 23, it can also be done when the drive rail 31 is disengaged from the housing 21.

[0034] Preferably, the sum of the elastic forces of the second elastic components 23 is less than the elastic force of the first elastic component 32. Through this setting, in this embodiment, when the guide assembly 20 changes the position of each abutting end through the second elastic component 23, it can be done when the driving guide rail 31 is disengaged from the housing 21, that is, it can be done in the initial state of the medical oscillating saw instrument 100 (in the state of not being powered on). Specifically, when the abutting end of each guide slide bar 22 abuts against the surface of the bone to adjust the position of the abutting end of each guide slide bar 22 through the second elastic component 23, the elastic force of the first elastic component 32 is greater than the sum of the elastic forces of each second elastic component 23, so that the housing 21 can form an effective limit through the first elastic component 32, so that the medical oscillating saw instrument 100 of the embodiment of the present invention can realize adaptive adjustment of the position of the abutting end of the guide slide bar 22 in the initial state (in the state of not being powered on), so as to facilitate the use of the medical oscillating saw instrument 100 of the embodiment of the present invention.

[0035] Preferably, combined Figure 2 and Figure 3As shown, the locking assembly 24 may include a support seat 241 disposed in the housing 21 and used to support each guide slide bar 22, and a locking portion 242 disposed above each guide slide bar 22 opposite to the support seat 241. The locking portion 242 may be configured to be connected to the support seat 241 by mechanical connection or electromagnetic attraction to clamp and fix the guide slide bar 22.

[0036] Figure 2 FIG. 2 shows the structure of a first embodiment of the locking assembly 24. Figure 2 As shown, the locking portion 242 can be configured to be connected to the support seat 241 by mechanical connection to clamp and fix the guide slide bar 22. Specifically, the surface of the swing saw housing 1 can be formed with a second strip slide (not shown in the figure) and a locking bolt 243, and the locking bolt 243 is threadedly connected to the housing 21 through the second strip slide, and the locking bolt 243 is connected to the locking portion 242. After the position of the abutting end of the guide slide bar 22 is adaptively adjusted, the operator tightens the locking portion 242 to the support seat 241 by screwing in the locking bolt 243. In the process of driving the guide rail 31 to drive the guide assembly 20 to move, the locking bolt 243 can move along the second strip slide. When the osteotomy is completed, the locking bolt 243 is unscrewed to realize the release of the locking portion 242 from each guide slide bar 22.

[0037] Figure 3 FIG. 2 shows the structure of a second embodiment of the locking assembly 24. Figure 3 As shown, the locking part 242 can be arranged to be connected with the support seat 241 by electromagnetic attraction, so as to clamp and fix the guide slide bar 22. Specifically, the locking part 242 can be switched on and off to form an electrical connection with the power module. After the position of the abutting end of the guide slide bar 22 is adjusted adaptively, the locking part 242 is energized so that the locking part 242 generates an electromagnetic field. The material of the support seat 241 is selected as a ferromagnetic material, and the material of the guide slide bar 22 is selected as a non-ferromagnetic material, so that the locking part 242 can be fixed by attraction with the support seat 241, so as to achieve the two clamping and fixing of each guide slide bar 22. When the osteotomy is completed, the locking part 242 is powered off, so that the electromagnetic field disappears, so as to achieve the locking part 242 and the support seat 241 Disengagement, to release each guide slide bar 22.

[0038] It should be noted that in the second embodiment of the locking assembly 24, the locking assembly 24 can clamp and fix each guide slide bar 22, extend the drive rail 31 to the second position, control the power on and off of the driving end of the drive rail 31, swing the saw blade 4, and control the movement of the guide assembly 20 by the drive rail 31, which can be controlled by different operation buttons or by the same operation button 5. The specific control logic when controlled by the same operation button 5 is: it can be controlled separately by the number of times the operation button 5 is pressed; or when the operation button 5 is pressed continuously, the guide slide bar 22 is first clamped and fixed by the locking assembly 24, and then the drive rail 31 is extended to the position (second position) in contact with the guide assembly 20, and then the drive end generates an electromagnetic field to connect the drive rail 31 with the guide assembly 20, and then the saw blade 4 starts to swing while the drive rail 31 drives the guide assembly 20 to move.

[0039] In a preferred embodiment, a rough surface can be formed on the outer peripheral wall of the guide slide rod 22, so that the clamping and fixing of the locking assembly 24 and each guide slide rod 22 is more stable and reliable, thereby effectively improving the stability of the contact between each guide slide rod 22 and the surface of the bone, and further ensuring the osteotomy effect of the medical oscillating saw instrument 100 of the embodiment of the present invention.

[0040] In a preferred embodiment, the abutting end (i.e., the second end 202) of the guide slide bar 22 can be configured as a tip structure or a suction cup structure. With this configuration, the tip structure can be configured as an anchor structure, so that when the guide slide bar 22 abuts against the surface of the bone, the tip structure can be nailed into the bone under the action of an external force, thereby further improving the stability of the guide slide bar 22 during guidance, and further ensuring the osteotomy effect of the medical oscillating saw instrument 100 of the embodiment of the present invention. The abutting end of the guide slide bar 22 can also be configured as a suction cup structure, so that when the guide slide bar 22 abuts against the surface of the bone, it can form adsorption with the surface of the bone, thereby ensuring the stability of the abutment.

[0041] In a preferred embodiment, the guide slide bar 22 is constructed as a solid structure with a circular or rectangular cross section. With this configuration, on the one hand, the structural strength of the solid structure is better, and the stability effect during the guiding process can be effectively ensured. On the other hand, the solid structure can also prevent bone residues from entering the interior of the oscillating saw housing 1 and causing contamination of the interior of the oscillating saw housing 1.

[0042] In a preferred embodiment, the guide slide bar 22 may be made of metal material, preferably stainless steel, to further ensure the structural strength of the guide slide bar 22 .

[0043] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0044] In the description of the present application, it should be understood that the terms "length", "lower", "front", "rear", "horizontal", "inside", "outside", "axial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A medical oscillating saw, characterized in that: include: An oscillating saw body, the oscillating saw body comprising an oscillating saw housing and a saw blade connected to a driving end of the oscillating saw housing; A guide assembly, the guide assembly is located below the saw blade and is slidably connected to the driving end, the first end of the guide assembly is disposed in the housing of the oscillating saw, and the second end of the guide assembly is used to abut against the surface of the bone; as well as A driving device, wherein the driving device is fixed in the housing of the oscillating saw, and the driving end of the driving device is configured to be controllably connected to and disconnected from the first end, and the driving device comprises: a driving guide rail fixedly connected to the housing of the oscillating saw, and the driving end of the driving guide rail is controllably connected to and disconnected from the first end; and a first elastic component having one end fixedly connected to the side wall of the housing of the oscillating saw and the other end fixedly connected to the guide assembly; wherein the first elastic component is constructed such that when the driving end of the driving guide rail is disconnected from the first end, the guide assembly can be reset to an initial position by its own elasticity, wherein the driving end of the driving guide rail is controllably connected to and disconnected from the first end by mechanical connection or electromagnetic attraction; Among them, in the initial state of the medical oscillating saw instrument, the distance between the second end of the guide assembly and the driving end is greater than the distance between the sawtooth end of the saw blade and the driving end. In the use state of the medical oscillating saw instrument, the driving end of the driving device is controlled to be connected to the first end, and the guide assembly can be driven by the driving device to move parallel to the length direction of the saw blade and close to the driving end.

2. The medical oscillating saw device according to claim 1, characterized in that: The guide assembly includes: a shell body slidably arranged in the outer shell of the oscillating saw along a length direction parallel to the saw blade, the driving device and the first elastic component are both connected to the shell body; and a plurality of guide slide bars, one end of which is connected to the shell body and the other end passes through the driving end portion and is used to abut against the surface of the bone, each of the guide slide bars is slidably connected to the driving end portion and is parallel to the saw blade; wherein the abutting ends of each of the guide slide bars are on a straight line, or the connecting line of the abutting ends of each of the guide slide bars is constructed as a curve matching the surface shape of the bone.

3. The medical oscillating saw device according to claim 2, characterized in that: The guide assembly also includes: a plurality of second elastic components arranged in the shell for connecting each of the guide slide bars and the shell, each of the second elastic components corresponding one to each of the guide slide bars; and a locking component arranged in the shell for fixing the position of the guide slide bars; wherein each of the second elastic components is constructed to be compressible by the corresponding guide slide bar so as to adaptively change the position of the abutting end of the guide slide bar, and the locking component is configured to fix each of the guide slide bars after the abutting end of each of the guide slide bars changes position.

4. The medical oscillating saw device according to claim 3, characterized in that: The sum of the elastic forces of the second elastic components is smaller than the elastic force of the first elastic component.

5. The medical oscillating saw device according to claim 3, characterized in that: The locking assembly includes a support seat arranged in the shell and used to support each of the guide slide bars, and a locking portion arranged above each of the guide slide bars opposite to the support seat, wherein the locking portion is configured to be connected to the support seat by mechanical connection or electromagnetic attraction to clamp and fix the guide slide bars.

6. The medical oscillating saw device according to any one of claims 3 to 5, characterized in that: A rough surface is formed on the outer peripheral wall of the guide slide bar.

7. The medical oscillating saw device according to claim 2, characterized in that: The abutting end of the guide slide rod is configured as a tip structure or a suction cup structure.

8. The medical oscillating saw device according to claim 2, characterized in that: The guide slide bar is constructed as a solid structure with a circular or rectangular cross section.

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