Femur osteotome

Abstract

The present application relates to a kind of femur osteotomes, the femur osteotome includes: clamping assembly and guide plate assembly, the clamping assembly includes connected clamp head and clamping arm component, the clamping arm component has for clamping femur clamping channel, the size of the clamping channel is adjustable, the guide plate assembly includes osteotomy guide plate and first connecting component, the osteotomy guide plate is detachably connected with the clamp head by the first connecting component, osteotomy groove is provided on the osteotomy guide plate, and the groove wall of the osteotomy groove is orthogonal to the axial direction of the clamping channel.The femur osteotome of the present application is higher in accuracy, easy to assemble, and simple to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a femoral osteotome. Background Art

[0002] Developmental dysplasia of the hip (DDH) is a hip joint disorder that develops in infancy or childhood, affecting approximately one in a thousand live births. The DDH osteotomy procedure used to treat DDH is complex and has a long learning curve. The success of the procedure is closely tied to the appropriate surgical approach and the surgeon's experience, which can easily lead to errors in deformity assessment.

[0003] In the related art, the position of femoral osteotomy mostly depends on the doctor's operating habits and clinical experience, and the assembly and operation of the femoral osteotomy auxiliary tools in the related art are inconvenient, resulting in large errors in femoral osteotomy and poor postoperative results for patients. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a femoral osteotome that is highly accurate, easy to assemble, and simple to operate.

[0006] The femoral osteotome of an embodiment of the present invention includes: a clamping assembly, the clamping assembly includes a connected clamping head and a clamping arm component, the clamping arm component has a clamping channel for clamping the femur, and the size of the clamping channel is adjustable; a guide plate assembly, the guide plate assembly includes an osteotomy guide plate and a first connecting component, the osteotomy guide plate is detachably connected to the clamping head through the first connecting component, the osteotomy guide plate is provided with an osteotomy groove, the groove wall of the osteotomy groove is orthogonal to the axial direction of the clamping channel.

[0007] The femoral osteotome according to an embodiment of the present invention can be engaged with the femur via a clamping channel, thereby securing the clamping assembly relative to the femur. Furthermore, the size of the clamping channel can be adjusted by the surgeon to suit the femur of each patient, thereby extending the range of use of the femoral osteotome and improving the accuracy of femoral osteotomy. Furthermore, since the osteotomy guide is detachably connected to the clamping chuck via the first connecting member, the femoral osteotome is easily assembled by the surgeon and is easy to use and operate. Therefore, the femoral osteotome according to the embodiment of the present invention has the advantages of high accuracy, easy assembly, and simple operation.

[0008] In some embodiments, there are multiple osteotomy grooves, and the multiple osteotomy grooves are arranged at intervals along the axial direction of the clamping channel. The distance between adjacent osteotomy grooves is greater than or equal to 20 mm and less than or equal to 50 mm.

[0009] In some embodiments, the osteotomy guide plate includes a fixing portion, a first osteotomy portion and a second osteotomy portion, the first osteotomy portion and the second osteotomy portion are respectively arranged on opposite sides of the fixing portion, the fixing portion is detachably connected to the clamping head through the first connecting component, a part of the osteotomy groove is provided on the first osteotomy portion, and another part of the osteotomy groove is provided on the second osteotomy portion.

[0010] In some embodiments, the first osteotomy portion is adjacent to the proximal end of the femur, the second osteotomy portion is adjacent to the distal end of the femur, and the thickness of the first osteotomy portion along the axial direction of the clamping channel is smaller than the thickness of the second osteotomy portion along the axial direction of the clamping channel.

[0011] In some embodiments, the first connecting component includes a first threaded member and a second threaded member, the first threaded member passes through the osteotomy guide and is threadedly engaged with the chuck, and the second threaded member is threadedly engaged with the osteotomy guide and abuts against the first threaded member.

[0012] In some embodiments, one of the osteotomy guide plate and the clamping chuck is provided with a first positioning hole, and the other is provided with a first positioning column, and the first positioning column is fitted in the first positioning hole.

[0013] In some embodiments, the clamp arm component includes a connected first adjusting member, a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm are pivotally connected to the clamp head and define the clamping channel, one end of the first adjusting member is pivotally connected to the first clamp arm and the second clamp arm, the other end of the first adjusting member passes through the osteotomy guide, and the first adjusting member is movable along its axial direction relative to the clamp head to drive the first clamp arm and the second clamp arm to swing relative to the clamp head.

[0014] In some embodiments, the first adjusting member includes a locking rod and a connecting shaft, one end of the connecting shaft is pivotally connected to the first clamping arm and the second clamping arm, the other end of the connecting shaft passes through the clamping head and is threadedly engaged in the locking rod, and the locking rod is rotatable relative to the clamping head to drive the connecting shaft to move along its axial direction relative to the clamping head.

[0015] In some embodiments, a mounting hole is provided in the locking rod, at least a portion of the connecting shaft is threadedly engaged in the mounting hole, a step surface is provided in the mounting hole, and a limit member is provided at the other end of the connecting shaft, and the limit member can abut against the step surface to limit the movement of the connecting shaft toward the clamping head; and / or, the first adjusting member also includes an elastic member, which is sleeved on the connecting shaft and abuts against the clamping head, and the elastic member has an elastic force that drives the connecting shaft to move in a direction away from the locking rod.

[0016] In some embodiments, the femoral osteotome further comprises an anti-slip pad, which is provided on the clamping surface of at least one of the first clamping arm and the second clamping arm; and / or, the clamping surface of at least one of the first clamping arm and the second clamping arm is provided with anti-slip teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a femoral osteotome according to an embodiment of the present invention.

[0018] Figure 2 It is a partial side view of a femoral osteotome according to an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of an osteotomy guide plate of a femoral osteotome according to an embodiment of the present invention.

[0020] Figure 4 4 is a cross-sectional view of a femoral osteotome according to an embodiment of the present invention.

[0021] Figure 5 It is a partial cross-sectional view of a femoral osteotome according to an embodiment of the present invention.

[0022] Figure 6 4 is a cross-sectional view of a first adjusting member of a femoral osteotome according to an embodiment of the present invention.

[0023] Figure 7 It is a partial schematic diagram of the clamping assembly of the femoral osteotome according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 1. Clamping assembly; 11. Clamping head; 111. First positioning column; 112. First threaded hole; 12. Clamping arm component; 121. First clamping arm; 122. Second clamping arm; 123. First adjusting member; 1231. Locking rod; 12311. Mounting hole; 12312. Step surface; 1232. Connecting shaft; 1233. Limiting member; 1234. Elastic member; 124. First column; 125. Second column; 126. Third column; 13. Clamping channel; 131. Clamping surface; 1311. Anti-slip teeth;

[0026] 2. Guide plate assembly; 21. Osteotomy guide plate; 211. First osteotomy part; 212. Second osteotomy part; 213. Fixing part; 2131. First positioning hole; 2132. Second positioning hole; 2133. First through hole; 2134. Second threaded hole; 24. Osteotomy groove; 22. First connecting component; 221. First threaded member; 222. Second threaded member. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] Please refer to the following Figures 1 to 7 A femoral osteotome according to an embodiment of the present invention is described.

[0029] like Figures 1 to 5 As shown, a femoral osteotome according to an embodiment of the present invention includes a clamping assembly 1 and a guide plate assembly 2. The clamping assembly 1 includes a connected clamping head 11 and a clamping arm 12. The clamping arm 12 has a clamping channel 13 for clamping the femur, and the size of the clamping channel 13 is adjustable. The guide plate assembly 2 includes an osteotomy guide plate 21 and a first connecting member 22. The osteotomy guide plate 21 is detachably connected to the clamping head 11 via the first connecting member 22. The osteotomy guide plate 21 is provided with an osteotomy groove 24, the groove wall of which is orthogonal to the axial direction of the clamping channel 13.

[0030] The femoral osteotome according to an embodiment of the present invention can cooperate with the femur through the clamping channel 13 so that the clamping assembly 1 and the femur are relatively fixed, thereby avoiding the problem of the femoral osteotome being displaced relative to the femur when the doctor performs osteotomy, and the doctor can adjust the size of the clamping channel 13 according to the femur of different patients, thereby improving the scope of use of the femoral osteotome and improving the accuracy of femoral osteotomy. In addition, since the osteotomy guide 21 is detachably connected to the clamping chuck 11 through the first connecting member 22, it is convenient for the doctor to assemble the femoral osteotome, and it is easy to use and operate. Therefore, the femoral osteotome of the embodiment of the present invention has the advantages of high accuracy, easy assembly, and simple operation.

[0031] It is understandable that if Figures 1 to 3 As shown, the osteotomy slot 24 is a one-way opening to facilitate the entry of an oscillating saw. When performing osteotomy on the femur, the surgeon inserts the oscillating saw into the osteotomy slot 24. The oscillating saw can cut along the plane of the slot wall of the osteotomy slot 24, thereby making the osteotomy position of the femur more precise and achieving a better osteotomy effect.

[0032] For example, Figures 1 to 3 As shown, multiple osteotomy grooves 24 are arranged axially spaced apart along the clamping channel 13. It will be appreciated that multiple osteotomy grooves 24 are provided, each corresponding to a different femoral osteotomy position. This allows the surgeon to select osteotomy grooves 24 at different locations based on the patient's specific needs, thereby providing a wider range of bone grafting angles. Therefore, the femoral osteotome of the present invention provides high precision in assisting osteotomy, facilitates accurate positioning of the femoral osteotomy position, and provides excellent results.

[0033] For example, the distance between two adjacent osteotomy grooves 24 is greater than or equal to 20 mm and less than or equal to 50 mm. For example, the distance between two adjacent osteotomy grooves 24 can be 20 mm, 30 mm, 40 mm, or 50 mm. The femoral osteotome according to an embodiment of the present invention sets the distance between two adjacent osteotomy grooves 24 to the above-mentioned size range, which can meet the osteotomy needs of most patients and has a wider range of applications. In addition, the distance between each two adjacent osteotomy grooves 24 can be the same or different. The doctor can select any two osteotomy grooves 24 to obtain different osteotomy distances, thereby making the osteotomy position more precise.

[0034] In some embodiments, as Figures 1 to 3 As shown, the osteotomy guide 21 includes a fixing portion 213, a first osteotomy portion 211, and a second osteotomy portion 212. The first osteotomy portion 211 and the second osteotomy portion 212 are disposed on opposite sides of the fixing portion 213. The fixing portion 213 is detachably connected to the clamping head 11 via a first connecting member 22. A portion of the osteotomy grooves 24 are provided on the first osteotomy portion 211, while another portion of the osteotomy grooves 24 are provided on the second osteotomy portion 212. It will be appreciated that the first osteotomy portion 211 and the second osteotomy portion 212 are arranged axially on either side of the fixing portion 213 along the clamping channel 13. Because the osteotomy grooves 24 are provided on both the first osteotomy portion 211 and the second osteotomy portion 212, after the clamping arm 12 is clamped on the femur, the surgeon can use the osteotomy grooves 24 on either the first osteotomy portion 211 or the second osteotomy portion 212 to perform osteotomy, thereby improving the surgeon's surgical convenience.

[0035] Alternatively, as Figure 2 and Figure 3 As shown, the first osteotomy portion 211 is adjacent to the proximal end of the femur, and the second osteotomy portion 212 is adjacent to the distal end of the femur. The thickness of the first osteotomy portion 211 along the axial direction of the clamping channel 13 is less than the thickness of the second osteotomy portion 212 along the axial direction of the clamping channel 13. It can be understood that when the clamping arm component 12 is clamped on the femur, the first osteotomy portion 211 is arranged adjacent to the proximal end of the femur, and the second osteotomy portion 212 is arranged adjacent to the distal end of the femur. Therefore, when the femoral osteotome is used to cut the femur, due to the smaller thickness of the first osteotomy portion 211, the first osteotomy portion 211 can avoid the lesser trochanter of the proximal femur, further improving the safety of the surgery.

[0036] For example, Figure 2 and Figure 3 As shown, the first osteotomy portion 211 is provided with one osteotomy groove 24, and the second osteotomy portion 212 is provided with three osteotomy grooves 24. It is understood that the present application does not specifically limit the number of osteotomy grooves 24 on the first osteotomy portion 211 and the second osteotomy portion 212, and the number of osteotomy grooves 24 can be selected according to actual design requirements.

[0037] In some embodiments, as Figures 3 to 5 As shown, the first connecting component 22 includes a first threaded member 221 and a second threaded member 222. The first threaded member 221 passes through the osteotomy guide 21 and is threadedly engaged with the clamping head 11. The second threaded member 222 is threadedly engaged with the osteotomy guide 21 and abuts against the first threaded member 221. For example, the fixing portion 213 is provided with a first through hole 2133, and the clamping head 11 is provided with a first threaded hole 112. The first through hole 2133 and the first threaded hole 112 both extend in the vertical direction. The first threaded member 221 passes through the first through hole 2133 and is screwed into the first threaded hole 112. For example, the first threaded member 221 can be a hexagon socket head bolt, making it easier for the doctor to assemble the fixing portion 213 and the clamping head 11 using an hexagonal wrench.

[0038] like Figures 1 to 3 As shown, the second threaded member 222 can be mounted on one side of the fixing portion 213. The fixing portion 213 is provided with a second threaded hole 2134. The second threaded hole 2134 communicates with the first through hole 2133. The second threaded member 222 is screwed into the second threaded hole 2134, thereby causing the second threaded member 222 to abut against the first threaded member 221. The femoral osteotomy according to this embodiment of the present invention prevents the first threaded member 221 from loosening by abutting the second threaded member 222 against the first threaded member 221. This eliminates the risk of the first threaded member 221 falling, thereby improving surgical safety.

[0039] For example, the second threaded member 222 may be a jackscrew. After the jackscrew is installed, the end of the jackscrew may be inserted into the groove of the first threaded member 221, thereby further preventing the first threaded member 221 from retreating.

[0040] Alternatively, as Figures 1 to 3 As shown, one of the osteotomy guide plate 21 and the clamping head 11 is provided with a first positioning hole 2131, and the other is provided with a first positioning post 111, which fits into the first positioning hole 2131. For example, the fixing portion 213 is provided with the first positioning hole 2131, and the clamping head 11 is provided with the first positioning post 111, which fits into the first positioning hole 2131. Therefore, after the osteotomy guide plate 21 and the clamping head 11 are pre-positioned by the first positioning post 111 and the first positioning hole 2131, the osteotomy guide plate 21 and the clamping head 11 can be fixed by the first connecting member 22, thereby making the assembly of the osteotomy guide plate 21 and the clamping head 11 convenient and simple to operate.

[0041] In some embodiments, as Figure 1 、 Figure 4 and Figure 5As shown, the clamping arm component 12 includes a first adjusting member 123, a first clamping arm 121 and a second clamping arm 122 that are connected to each other. The first clamping arm 121 and the second clamping arm 122 are both pivotally connected to the clamping head 11 and define a clamping channel 13. One end of the first adjusting member 123 is pivotally connected to the first clamping arm 121 and the second clamping arm 122, and the other end of the first adjusting member 123 passes through the osteotomy guide 21. The first adjusting member 123 is movable along its axial direction relative to the clamping head 11 to drive the first clamping arm 121 and the second clamping arm 122 to swing relative to the clamping head 11.

[0042] It can be understood that the first adjusting member 123 can adjust the opening between the first clamping arm 121 and the second clamping arm 122 according to the size of the femur of different patients, so that the first clamping arm 121 and the second clamping arm 122 can clamp femurs of different thicknesses to expand the scope of use of the femoral osteotome. In addition, the structure of the femoral osteotome in the embodiment of the present invention that clamps the femur through the clamping channel 13 is more stable and has a better use effect.

[0043] Specifically, if Figure 2 and Figure 4 As shown, a second positioning hole 2132 is provided on the fixing portion 213, and the other end of the first adjusting member 123 passes through the second positioning hole 2132, so that the osteotomy guide plate 21 can be further positioned, thereby achieving a better installation effect of the femoral osteotome.

[0044] For example, Figures 4 to 6 As shown, the first clamping arm 121 is pivotally connected to the clamping head 11 via a first post 124, the second clamping arm 122 is pivotally connected to the clamping head 11 via a second post 125, and the lower end of the first adjusting member 123 is pivotally connected to the first clamping arm 121 and the second clamping arm 122 via a third post 126. The third post 126 is located between the first post 124 and the second post 125.

[0045] like Figure 4 As shown, when the first adjusting member 123 moves upward, the third column 126 moves upward synchronously, and can drive the first clamping arm 121 to swing clockwise around the first column 124, and the second clamping arm 122 to swing counterclockwise around the second column 125, thereby reducing the opening between the first clamping arm 121 and the second clamping arm 122 to stably clamp the patient's femur.

[0046] like Figure 4 As shown, when the first adjusting member 123 moves downward, the third column 126 moves downward synchronously, and can drive the first clamping arm 121 to swing counterclockwise around the first column 124, and the second clamping arm 122 to swing clockwise around the second column 125, thereby increasing the opening between the first clamping arm 121 and the second clamping arm 122 to release the patient's femur, thereby facilitating the adjustment of the femoral clamping position of the clamping arm component 12.

[0047] Therefore, the femoral osteotome of the embodiment of the present invention can make the structural design of the clamping arm component 12 simple and reasonable by setting the clamping arm component 12 as the above structure, and can be easily adjusted and convenient for doctors to use and operate, thereby achieving better use effect.

[0048] Specifically, if Figures 4 to 6 As shown, the first adjusting member 123 includes a locking rod 1231 and a connecting shaft 1232. One end of the connecting shaft 1232 (as shown in FIG. Figure 4 The lower end of the connecting shaft 1232) is pivotally connected to the first clamp arm 121 and the second clamp arm 122. For example, the connecting shaft 1232 can be a bolt structure. The third column 126 is provided at the lower end of the connecting shaft 1232, so that when the connecting shaft 1232 moves up and down, it can drive the third column 126 to move up and down synchronously, thereby reducing or increasing the opening between the first clamp arm 121 and the second clamp arm 122. The other end of the connecting shaft 1232 (such as Figure 4 The upper end of the middle connecting shaft 1232 passes through the clamping head 11 and is threadedly engaged in the locking rod 1231. The locking rod 1231 is rotatable relative to the clamping head 11 to drive the connecting shaft 1232 to move relative to the clamping head 11 along its axial direction.

[0049] It is understood that by rotating the locking lever 1231, the surgeon can move the connecting shaft 1232 upward or downward relative to the clamping head 11, thereby driving the first clamping arm 121 and the second clamping arm 122 to swing synchronously. By configuring the first adjusting member 123 in the above-described structure, the femoral osteotome of the present invention can simplify the structure of the first adjusting member 123, facilitate assembly, and facilitate operation by the surgeon.

[0050] Alternatively, as Figures 4 to 6 As shown, a mounting hole 12311 is provided in the locking rod 1231, at least part of the connecting shaft 1232 is threadedly fitted in the mounting hole 12311, a step surface 12312 is provided in the mounting hole 12311, and the other end of the connecting shaft 1232 (such as Figure 4 A limiter 1233 is provided at the upper end of the connecting shaft 1232. The limiter 1233 can abut against the step surface 12312 to limit the movement of the connecting shaft 1232 toward the clamping head 11. For example, the limiter 1233 can be a hexagon socket bolt screwed on the upper end of the connecting shaft 1232. The end of the hexagon socket bolt can abut against the step surface 12312, thereby limiting the movement distance of the connecting shaft 1232. It is understandable that, if Figure 2 As shown, the limiter 1233 and the step surface 12312 can limit the maximum displacement of the connecting shaft 1232, thereby avoiding the problem of the connecting shaft 1232 moving downward and falling out of the mounting hole 12311, thereby limiting the moving stroke of the connecting shaft 1232 within a reasonable range, thereby improving the adjustment effect of the femoral osteotome.

[0051] Alternatively, as Figure 4 and Figure 5 As shown, the first adjusting member 123 also includes an elastic member 1234. For example, the elastic member 1234 is a spring. The elastic member 1234 is mounted on the connecting shaft 1232 and abuts the clamping head 11. The elastic member 1234 has an elastic force that drives the connecting shaft 1232 in a direction away from the locking rod 1231. It is understood that when the connecting shaft 1232 moves upward, the elastic member 1234 is compressed and has elastic potential energy. When the connecting shaft 1232 moves downward, the elastic potential energy of the elastic member 1234 is released, thereby assisting in pushing the connecting shaft 1232 downward, thereby increasing the opening of the first clamping arm 121 and the second clamping arm 122. By providing the elastic member 1234, the femoral osteotome of the embodiment of the present invention can make the movement trajectory of the first clamping arm 121 and the second clamping arm 122 more stable when opening or clamping, thereby improving the performance.

[0052] In some embodiments, as Figure 1 As shown, the femoral osteotome further includes an anti-slip pad (not shown) disposed on the clamping surface 131 of at least one of the first clamping arm 121 and the second clamping arm 122. It will be appreciated that the surface of the first clamping arm 121 adjacent to the clamping channel 13 and the surface of the second clamping arm 122 adjacent to the clamping channel 13 both constitute the clamping surface 131. The anti-slip pad is disposed on the clamping surfaces 131 of both the first clamping arm 121 and the second clamping arm 122, thereby increasing the engagement force between the femoral osteotome and the femur, providing greater stability in the femoral osteotome's grip on the femur and further enhancing the accuracy of the femoral osteotome's positioning.

[0053] Alternatively, as Figure 1 and Figure 7 As shown, anti-slip teeth 1311 are provided on the clamping surface 131 of at least one of the first clamping arm 121 and the second clamping arm 122. For example, the first clamping arm 121 and the second clamping arm 122 are both provided with anti-slip teeth 1311. The anti-slip teeth 1311 provided on the clamping surfaces 131 of the first clamping arm 121 and the second clamping arm 122 increase the engagement force between the femoral osteotome and the femur, thereby improving the stability of the femoral osteotome in gripping the femur and further enhancing the accuracy of the femoral osteotome positioning.

[0054] Alternatively, as Figure 1 and Figure 7 As shown, the outer contours of the clamping surface 131 of the first clamping arm 121 and the outer contours of the clamping surface 131 of the second clamping arm 122 are both V-shaped, and the V-shaped clamping surfaces 131 of the first clamping arm 121 and the second clamping arm 122 are arranged relative to each other, so that the first clamping arm 121 and the second clamping arm 122 can have better stability when clamping the sacrum and higher positioning accuracy.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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, rather than indicating or implying 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 limiting the present invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0057] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0058] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0059] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0060] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A femoral osteotome, characterized in that: include: A clamping assembly, the clamping assembly comprising a connected clamping head and a clamping arm component, the clamping arm component having a clamping channel for clamping the bone, and the size of the clamping channel is adjustable; A guide plate assembly, the guide plate assembly comprising an osteotomy guide plate and a first connecting component, the osteotomy guide plate being detachably connected to the clamping head via the first connecting component, the osteotomy guide plate being provided with an osteotomy groove, the groove wall of the osteotomy groove being orthogonal to the axial direction of the clamping channel; There are multiple osteotomy grooves, and the multiple osteotomy grooves are spaced apart along the axial direction of the clamping channel, and the distance between adjacent osteotomy grooves is greater than or equal to 20 mm and less than or equal to 50 mm; The osteotomy guide plate includes a fixing portion, a first osteotomy portion and a second osteotomy portion, wherein the first osteotomy portion and the second osteotomy portion are respectively arranged on opposite sides of the fixing portion, and the fixing portion is detachably connected to the clamping head through the first connecting component. A portion of the osteotomy groove is provided on the first osteotomy portion, and another portion of the osteotomy groove is provided on the second osteotomy portion.

2. The femoral osteotome according to claim 1, characterized in that The first osteotomy part is adjacent to the proximal end of the femur, the second osteotomy part is adjacent to the distal end of the femur, and the thickness of the first osteotomy part along the axial direction of the clamping channel is smaller than the thickness of the second osteotomy part along the axial direction of the clamping channel.

3. The femoral osteotome according to claim 1, characterized in that The first connecting component includes a first threaded member and a second threaded member. The first threaded member passes through the osteotomy guide and is threadably engaged with the chuck. The second threaded member is threadably engaged with the osteotomy guide and abuts against the first threaded member.

4. The femoral osteotome according to claim 1, characterized in that One of the osteotomy guide plate and the clamping chuck is provided with a first positioning hole, and the other is provided with a first positioning column, and the first positioning column is fitted in the first positioning hole.

5. The femoral osteotome according to any one of claims 1 to 4, characterized in that: The clamping arm component includes a first adjusting member, a first clamping arm and a second clamping arm that are connected to each other. The first clamping arm and the second clamping arm are both pivotally connected to the clamping head and define the clamping channel. One end of the first adjusting member is pivotally connected to the first clamping arm and the second clamping arm, and the other end of the first adjusting member passes through the osteotomy guide. The first adjusting member is movable along its axial direction relative to the clamping head to drive the first clamping arm and the second clamping arm to swing relative to the clamping head.

6. The femoral osteotome according to claim 5, characterized in that The first adjusting member includes a locking rod and a connecting shaft, one end of the connecting shaft is pivotally connected to the first clamping arm and the second clamping arm, the other end of the connecting shaft passes through the clamping head and is threadedly engaged in the locking rod, and the locking rod is rotatable relative to the clamping head to drive the connecting shaft to move along its axial direction relative to the clamping head.

7. The femoral osteotome according to claim 6, characterized in that A mounting hole is provided in the locking rod, and at least a portion of the connecting shaft is threadedly engaged in the mounting hole. A step surface is provided in the mounting hole, and a limit piece is provided at the other end of the connecting shaft, and the limit piece can abut against the step surface to limit the movement of the connecting shaft toward the clamping head; And / or, the first adjusting member further includes an elastic member, which is sleeved on the connecting shaft and abuts against the clamping head, and the elastic member has an elastic force that drives the connecting shaft to move in a direction away from the locking rod.

8. The femoral osteotome according to claim 5, characterized in that Also included is an anti-skid pad, which is provided on a clamping surface of at least one of the first clamping arm and the second clamping arm; And / or, anti-slip teeth are provided on the clamping surface of at least one of the first clamping arm and the second clamping arm.

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