Osteotomy device

Abstract

The application provides an osteotomy device, which comprises a gap balance measuring tool, an osteotomy tool, a first driving member and a swing saw. The osteotomy tool comprises a first main body and a probe assembly. The first main body is movably arranged on the gap balance measuring tool. A first scale line and a second scale line are arranged on the side wall of the first main body. The first main body is provided with fixed holes and a first osteotomy channel at intervals. The probe assembly comprises a bracket and a probe movably arranged in the bracket. The bracket is movably arranged in the first main body. The bracket is provided with a second osteotomy channel. The first driving member is rotatably arranged on the gap balance measuring tool and can drive the osteotomy tool to move up and down. The swing saw is removably arranged in the first osteotomy channel or the second osteotomy channel. The technical scheme of the application effectively solves the problem that the osteotomy process in the related art is insufficient or excessive, resulting in unsuccessful surgery.

Description

Technical Field

[0001] This invention relates to the field of orthopedic medical devices, and more specifically, to an osteotomy device. Background Technology

[0002] With the widespread application and continuous development of total knee arthroplasty, doctors have increasingly higher requirements for the precision of the joint replacement surgery process in order to improve the success rate of joint replacement, reduce surgical risks, enhance patient recovery, and improve the surgical experience. This not only requires the precision manufacturing of surgical tools for joint replacement, but also demands that the design concept of these tools be advanced, capable of providing more precise information to doctors to ensure accurate judgment and guarantee surgical success.

[0003] In total knee arthroplasty using relevant technologies, the gap-balanced osteotomy method is a mature surgical technique. This method typically employs specialized gap-balanced measurement tools, including a fixation plate on the tibial side and a rotation plate on the tibial side. The fixation plate serves as a reference, while the rotation plate is used to measure the external rotation and valgus angles of the femoral condyle. After obtaining accurate bone characteristic data, the size of the femoral condyle is measured using a tool for measuring the size of the femoral condyle, and the positioning holes for the four-in-one osteotomy are determined. Then, osteotomy is performed on the femoral condyle using the osteotomy tool to achieve prosthesis placement.

[0004] The use of tools for measuring the gap balance, measuring the size of the femoral condyle, and then using osteotomy tools can lead to errors in the connection between these tools and the osteotomy process. This can result in insufficient or excessive osteotomy, leading to unsuccessful surgery. Summary of the Invention

[0005] The main objective of this invention is to provide an osteotomy device to solve the problem of insufficient or excessive osteotomy in the osteotomy process of related technologies, which leads to unsuccessful surgery.

[0006] To achieve the above objectives, the present invention provides an osteotomy apparatus, comprising: a gap balancing measuring tool; an osteotomy tool including a first body and a probe assembly, the first body being movably disposed on the gap balancing measuring tool, a first scale line and a second scale line being provided on the side wall of the first body, and fixing holes and a first osteotomy channel being provided at intervals on the first body, the probe assembly including a bracket and a probe movably disposed through the bracket, the bracket being movably disposed through the first body, and a second osteotomy channel being provided on the bracket; a first driving member being rotatably disposed on the gap balancing measuring tool and capable of driving the osteotomy tool to move up and down; and an oscillating saw being removably disposed through the first osteotomy channel or the second osteotomy channel.

[0007] Furthermore, the first main body is provided with a first mounting hole, the clearance balancing measuring tool is provided with an elongated hole communicating with the first mounting hole, the first driving component is an eccentric wheel, the first driving component includes a driving body and an eccentric shaft connected to the driving body, the driving body is located in the first mounting hole, and the eccentric shaft passes through the elongated hole.

[0008] Furthermore, the first body is provided with a second mounting hole that communicates with the first mounting hole. The axis of the second mounting hole is inclined to or perpendicular to the axis of the first mounting hole. The osteotomy tool also includes a stop structure disposed in the second mounting hole and cooperating with the drive body.

[0009] Furthermore, the first mounting hole is clearance-fitted with the first driving member, and the stop structure includes an elastic member and a ball. The elastic member is located in the second mounting hole, and the ball is located between the elastic member and the side wall of the driving body. Multiple grooves are provided at intervals on the side wall of the driving body. When the ball mates with different grooves, the driving body is provided with a first indicating structure that mates with the first scale line.

[0010] Furthermore, the first osteotomy channel includes a first through groove and a second through groove, which are located on both sides of the first mounting hole, respectively. The end of the first through groove away from the first mounting hole is an open end, and the end of the second through groove away from the first mounting hole is also an open end.

[0011] Furthermore, the first body is also provided with a through hole, the axis of which is parallel to the first mounting hole. A connecting post and a connecting sleeve are provided inside the through hole. The connecting sleeve is movably fitted outside the connecting post, and the axis of the connecting sleeve is perpendicular to the axis of the connecting post. The osteotomy tool also includes an intramedullary rod, which is connected to the connecting sleeve.

[0012] Furthermore, the osteotomy tool cooperates with the gap balancing measuring tool through a guide structure. The guide structure includes a first guide portion and a second guide portion that cooperates with the first guide portion. The first guide portion is disposed on the gap balancing measuring tool, the second guide portion is disposed on the osteotomy tool, and the first driving member is rotatably disposed on the first guide portion.

[0013] Furthermore, the support includes a support platform and a guide rod connected to the support platform. The probe is movably disposed at the end of the support platform. The second osteotomy channel passes through the two opposite sides of the support platform. The first main body is also provided with a guide hole that cooperates with the guide rod.

[0014] Furthermore, the first main body is also provided with a third through groove communicating with the guide hole, and the guide rod is provided with a second indicator structure located in the third through groove, the second indicator structure cooperating with the second scale line.

[0015] Furthermore, the gap balancing measuring tool includes: a base, comprising a second main body and a placement platform disposed on the second main body, wherein a third scale line is provided on the side wall of the second main body; a movable member, movably inserted through the second main body, wherein an osteotomy tool is disposed on the movable member, wherein a fourth scale line and a third indicating structure cooperating with the third scale line are provided at intervals on the side wall of the movable member; a swinging member, swingably inserted through the movable member and located above the placement platform, wherein the swinging member includes a swinging body and a fourth indicating structure disposed on the swinging body and cooperating with the fourth scale line; and a second driving member, driving the movable member and the osteotomy tool to move up and down.

[0016] According to the technical solution of this invention, the osteotomy device includes: a gap balancing measuring tool, an osteotomy tool, a first driving member, and a oscillating saw. The osteotomy tool includes a first body and a probe assembly. The first body is movably mounted on the gap balancing measuring tool. A first scale line and a second scale line are provided on the side wall of the first body, and fixing holes and a first osteotomy channel are provided at intervals on the first body. The probe assembly includes a bracket and a probe movably inserted through the bracket. The bracket is movably inserted through the first body, and a second osteotomy channel is provided on the bracket. The first driving member is rotatably mounted on the gap balancing measuring tool and can drive the osteotomy tool to move up and down. The oscillating saw is removably inserted through the first osteotomy channel or the second osteotomy channel. After the knee joint is in a flexed position, the gap balancing measuring tool is placed on the tibial platform, and the gap balancing measuring tool is adjusted to obtain the size of the osteotomy gap and the tension of the left and right ligaments. At this time, the osteotomy tool is close to the distal femoral cutting surface, the posterior condyle is close to the gap balancing measuring tool, and the probe is dragged up and down, so that the probe can contact the characteristic points of the femoral condyle. The first driving element drives the osteotomy tool to move up and down. The first osteotomy channel on the first body can move up and down relative to the second osteotomy channel on the support, adjusting the osteotomy position of the first or second osteotomy channel. During this process, the adjustment amount of the first driving element driving the first body to move up and down can be obtained through the first scale line. After the relative positions of the first and second osteotomy channels are adjusted, the relative positions of the probe assembly are stationary. At this time, the corresponding values ​​of the characteristic points of the femoral condyle contacted by the probe can be obtained through the second scale line. The scale in the second scale line represents the size of the human femoral condyle. The size of the femoral condyle is read and recorded as a basis for the patient to select the prosthesis model. The first body can be fixed to the femoral condyle using medical fixation pins through the fixation holes. An oscillating saw is used to perform osteotomy on the femoral condyle through the first and second osteotomy channels. In this way, integrating the first body and the gap balancing measuring tool together results in a compact structure. Furthermore, after using the gap balancing measuring tool, the osteotomy tool can be directly used for osteotomy, avoiding connection errors and effectively preventing insufficient or excessive osteotomy, thus improving accuracy and increasing the success rate of the surgery. Therefore, the technical solution of this application effectively solves the problem of insufficient or excessive osteotomy leading to surgical failure in related technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the osteotomy device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A front view schematic diagram of the osteotomy device;

[0020] Figure 3 It shows Figure 1 A left-side view of the osteotomy device;

[0021] Figure 4 It shows Figure 1 A cross-sectional view of the osteotomy tool of the osteotomy device at the first cutting position;

[0022] Figure 5 It shows Figure 4 Enlarged diagram of point A of the osteotomy tool;

[0023] Figure 6 It shows Figure 1 A cross-sectional view of the osteotomy tool of the osteotomy device at the second cutting position;

[0024] Figure 7 It shows Figure 1 A three-dimensional structural diagram of the first drive component of the osteotomy device;

[0025] Figure 8 It shows Figure 1 A schematic diagram of the exploded structure of the osteotomy tool of the osteotomy device;

[0026] Figure 9 It shows Figure 1 A three-dimensional structural diagram of the first main body of the osteotomy device;

[0027] Figure 10 It shows Figure 1 A three-dimensional structural diagram of the probe assembly of the osteotomy device;

[0028] Figure 11 It shows Figure 1 A three-dimensional schematic diagram of the intramedullary rod of the osteotomy device;

[0029] Figure 12 It shows Figure 1 A three-dimensional structural diagram of the gap balancing measuring tool for the osteotomy device;

[0030] Figure 13 It shows Figure 12 A cross-sectional view of the first cutting position of the gap balancing measuring tool;

[0031] Figure 14 It shows Figure 12 A cross-sectional view of the second cutting position of the gap balancing measuring tool; and

[0032] Figure 15 It shows Figure 1 A three-dimensional structural diagram of the torque wrench of the osteotomy device.

[0033] The above figures include the following reference numerals:

[0034] 101. Left ligament; 102. Right ligament; 103. Femoral condyle; 104. Tibial plateau; 10. Base; 11. Second body; 111. Third graduation line; 113. Third mounting hole; 114. Third through groove; 115. Mounting groove; 116. Fifth mounting hole; 117. Fourth mounting hole; 12. Placement platform; 21. First body; 211. First graduation line; 212. Second graduation line; 213. Fixation hole; 214. First Osteotomy channel; 2141, First through groove; 2142, Second through groove; 215, First mounting hole; 216, Second mounting hole; 217, Through hole; 218, Guide hole; 219, Third through groove; 22, Probe assembly; 221, Support; 2211, Support platform; 2212, Guide rod; 2213, Second indicating structure; 222, Probe; 2221, Probe body; 2222, Probe head; 223, Second osteotomy channel; 23, Spring Components; 24. Sphere; 25. Connecting post; 26. Connecting sleeve; 27. Intramedullary rod; 271. Intramedullary rod body; 272. Intramedullary rod head; 273. Intramedullary rod groove; 274. Intramedullary rod threaded end; 30. Moving component; 31. Fourth scale line; 32. Third indicating structure; 33. Moving body; 34. Support part; 35. Scale plate; 40. Swinging component; 41. Swinging body; 42. Fourth indicating structure; 51. First driving component; 511. Driving component Body; 5111, Groove; 5112, First indicating structure; 512, Eccentric shaft; 52, Oscillating saw; 53, Long hole; 55, First guide part; 56, Second guide part; 57, Second driving member; 61, Transmission structure; 611, First transmission gear; 612, Second transmission gear; 71, Force-applying member; 72, Locking member; 73, Matching gear; 74, Locking gear; 75, Elastic member; 76, Pivot; 90, Torque wrench; 91, Indicator dial. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] like Figures 1 to 3 As shown, the osteotomy device of this embodiment includes: a gap balancing measuring tool, an osteotomy tool, a first driving member 51, and a oscillating saw 52. The osteotomy tool includes a first body 21 and a probe assembly 22. The first body 21 is movably mounted on the gap balancing measuring tool. A first scale line 211 and a second scale line 212 are provided on the side wall of the first body 21, and fixing holes 213 and a first osteotomy channel 214 are provided at intervals on the first body 21. The probe assembly 22 includes a bracket 221 and a probe 222 movably inserted through the bracket 221. The bracket 221 is movably inserted through the first body 21, and a second osteotomy channel 223 is provided on the bracket 221. The first driving member 51 is rotatably mounted on the gap balancing measuring tool and can drive the osteotomy tool to move up and down. The oscillating saw 52 is removably inserted through the first osteotomy channel 214 or the second osteotomy channel 223.

[0039] Using the technical solution of this embodiment, after the knee joint is in a flexed position, the gap balancing measuring tool is placed on the tibial platform, and the gap balancing measuring tool is adjusted to obtain the size of the osteotomy gap and the tension of the left and right ligaments. At this time, the osteotomy tool is close to the distal femoral cutting surface, the posterior condyle is close to the gap balancing measuring tool, and the probe 222 is dragged up and down, so that the probe 222 can contact the characteristic point of the femoral condyle. The first driving member drives the osteotomy tool to move up and down, and the first osteotomy channel 214 on the first body 21 can move up and down relative to the second osteotomy channel 223 on the support 221, adjusting the cutting position of the first osteotomy channel 214 or the second osteotomy channel 223. In this process, the adjustment amount of the first driving member driving the first body 21 to move up and down can be obtained through the first scale line 211. After the relative position of the first osteotomy channel 214 and the second osteotomy channel 223 is adjusted, the relative position of the probe assembly 22 is stationary. At this point, the corresponding numerical value of the characteristic point of the femoral condyle contacted by the probe 222 can be obtained through the second scale line 212. The scale in the second scale line 212 represents the size of the human femoral condyle. The size of the femoral condyle is read and recorded as a basis for the patient to select the prosthesis model. The first body 21 can be fixed to the femoral condyle using medical fixation pins through the fixation hole 213. The oscillating saw 52 is used to perform osteotomy on the femoral condyle through the first osteotomy channel 214 and the second osteotomy channel 223. In this way, the first body 21 and the gap balancing measuring tool are integrated together, making the structure compact. After using the gap balancing measuring tool, the osteotomy tool can be used directly for osteotomy, avoiding connection errors and effectively avoiding the phenomenon of insufficient or excessive osteotomy, improving the accuracy of use, and thus improving the success rate of surgery. Therefore, the technical solution of this embodiment effectively solves the problem of insufficient or excessive osteotomy in the osteotomy process in related technologies, which leads to unsuccessful surgery.

[0040] Furthermore, the osteotomy device of this embodiment can advance the surgical steps, saving surgical time and improving surgical precision.

[0041] like Figures 4 to 8As shown, the first body 21 has a first mounting hole 215, and the clearance balancing measuring tool has an elongated hole 53 communicating with the first mounting hole 215. The first driving member 51 is an eccentric wheel, and includes a driving body 511 and an eccentric shaft 512 connected to the driving body 511. The driving body 511 is located inside the first mounting hole 215, and the eccentric shaft 512 passes through the elongated hole 53. The first mounting hole 215 facilitates the placement of the first driving member 51 on the first body 21, making the clearance balancing measuring tool compact. The eccentric wheel nature of the first driving member 51 allows it to rotate eccentrically, making the movement of the first body 21 more flexible. The elongated hole 53 provides clearance space for the movement of the eccentric shaft 512 on the first body 21, allowing the eccentric shaft 512 to both rotate and move simultaneously.

[0042] like Figure 2 and Figure 5 As shown, the first body 21 has a second mounting hole 216 communicating with the first mounting hole 215. The axis of the second mounting hole 216 is perpendicular to the axis of the first mounting hole 215. The osteotomy tool also includes a stop structure disposed in the second mounting hole 216 and cooperating with the drive body 511. The stop structure prevents the drive body 511 from rotating, so that the drive body 511 can stop at the position pointing to the scale on the first scale line 211.

[0043] Of course, in other embodiments not shown in the figures, the axis of the second mounting hole is inclined to the axis of the first mounting hole.

[0044] like Figure 2 , Figure 4 and Figure 5As shown, the first mounting hole 215 is clearance-fitted with the first driving member 51. The stop structure includes an elastic member 23 and a ball 24. The elastic member 23 is located within the second mounting hole 216, and the ball 24 is located between the elastic member 23 and the side wall of the driving body 511. The elastic member 23 can apply an elastic force to the ball 24 so that the ball 24 always abuts against the side wall of the driving body 511. A plurality of grooves 5111 are provided at intervals on the side wall of the driving body 511. When the ball 24 mates with different grooves 5111, the driving body 511 is provided with a first indicating structure 5112 that mates with the first scale line 211. The smooth surface of the ball 24 allows the position of one groove 5111 on the driving body 511 to smoothly rotate to the next groove 5111 position. The ball 24 located within the groove 5111 can prevent the driving body 511 from rotating, thereby preventing the first body 21 from moving downward and improving driving stability. During the process of the ball 24 engaging with different grooves 5111, a certain gap exists between the ball 24 and the bottom of the groove 5111, creating a drop. As the ball 24 falls into the groove 5111, a collision sound is heard, alerting the doctor that the ball 24 and groove 5111 are properly engaged. The groove 5111 is preferably an arc-shaped groove. The first indicating structure 5112 is preferably a concave point.

[0045] like Figure 2 and Figure 9 As shown, the first scale line 211 includes graduations of +1, +2, 0, -1, and -2. During the process of the sphere 24 engaging with different grooves 5111 to drive the first body 21 to move up and down, the first indicator structure 5112 on the drive body 511 can point to the corresponding graduation in the first scale line 211, indicating the adjustment amount of the first body 21's up-and-down movement for osteotomy operations. This adjustment amount refers to the change in the up-and-down movement of the first body 21 relative to the gap balancing measuring tool.

[0046] like Figure 2 , Figure 8 and Figure 9As shown, the first osteotomy channel 214 includes a first through groove 2141 and a second through groove 2142. The first through groove 2141 and the second through groove 2142 are located on opposite sides of the first mounting hole 215. The end of the first through groove 2141 away from the first mounting hole 215 is an open end, and the end of the second through groove 2142 away from the first mounting hole 215 is also an open end. Thus, when using the oscillating saw 52 for osteotomy, the oscillating saw 52 can be easily inserted into the first through groove 2141, which guides the movement of the oscillating saw 52. Similarly, the oscillating saw 52 can also be easily inserted into the second through groove 2142, which also guides the movement of the oscillating saw 52. In this way, the oscillating saw 52 can perform osteotomy on the femoral condyle from both sides, which helps improve osteotomy efficiency.

[0047] like Figures 3 to 9 As shown, the first body 21 is also provided with a through hole 217. The axis of the through hole 217 is parallel to the first mounting hole 215. A connecting post 25 and a connecting sleeve 26 are provided inside the through hole 217. The connecting sleeve 26 is movably fitted outside the connecting post 25, and the axis of the connecting sleeve 26 is perpendicular to the axis of the connecting post 25. Both the connecting post 25 and the connecting sleeve 26 are provided in the through hole 217, making the overall structure of the osteotomy tool compact. The osteotomy tool also includes an intramedullary rod 27, which is connected to the connecting sleeve 26. In this way, the first body 21 can move up and down relative to the intramedullary rod 27 through the connecting sleeve 26, avoiding interference between the first body 21 and the intramedullary rod 27 when the height of the first body 21 is adjusted. The intramedullary rod 27 is implanted in the femoral medullary cavity located on the force line of the lower limb, which can better ensure that the osteotomy tool is aligned with the force line of the lower limb. Based on this, when the osteotomy tool obtains the adjustment amount of the vertical movement of the first body 21 and the corresponding values ​​of the characteristic points of the femoral condyle, the accuracy and validity of the obtained values ​​are ensured. This, in turn, ensures the accuracy of the osteotomy tool's placement and avoids the possibility of surgical failure due to inaccurate placement of the osteotomy tool.

[0048] like Figure 5 and Figure 11 As shown, the intramedullary rod 27 includes an intramedullary rod body 271, an intramedullary rod head 272, an intramedullary rod groove 273, and an intramedullary rod threaded end 274. The intramedullary rod groove 273 is located on the peripheral wall of the intramedullary rod body 271, and the intramedullary rod head 272 and the intramedullary rod threaded end 274 are located at both ends of the intramedullary rod body 271, respectively. The connecting sleeve 26 has an internal thread, and the intramedullary rod threaded end 274 is threadedly connected to the internal thread of the connecting sleeve 26, facilitating a detachable connection between the intramedullary rod 27 and the connecting sleeve 26. The design of the intramedullary rod head 272 facilitates easy implantation of the intramedullary rod 27 into the femoral medullary cavity. The design of the intramedullary rod groove 273 ensures that the intramedullary rod 27 is easily inserted into the femoral medullary cavity while minimizing damage to the femoral medullary cavity.

[0049] like Figure 4 , Figure 6 and Figure 8 As shown, the osteotomy tool cooperates with the gap balancing measuring tool via a guide structure. The guide structure includes a first guide portion 55 and a second guide portion 56 that cooperates with the first guide portion 55. The first guide portion 55 is disposed on the gap balancing measuring tool, the second guide portion 56 is disposed on the osteotomy tool, and a first driving member 51 is rotatably disposed on the first guide portion 55. The cooperation between the first guide portion 55 and the second guide portion 56 allows the first driving member 51 to drive the osteotomy tool to move smoothly up and down relative to the gap balancing measuring tool.

[0050] In this embodiment, the first guide portion 55 includes a guide block and a connecting plate connected to the guide block, and the guide block has a trapezoidal cross-section. The second guide portion 56 is a dovetail groove provided on the osteotomy tool. Thus, during the engagement of the guide block and the dovetail groove, the guiding accuracy is high, and the guide block is prevented from disengaging from the dovetail groove in the horizontal direction, improving the reliability of the engagement. The dovetail groove is located at the rear of the first body 21. The connecting plate is provided on the gap balancing measuring tool.

[0051] like Figures 8 to 10 As shown, the support 221 includes a support platform 2211 and a guide rod 2212 connected to the support platform 2211. A probe 222 is movably disposed at the end of the support platform 2211. A second osteotomy channel 223 passes through the two oppositely disposed sides of the support platform 2211. The first body 21 is also provided with a guide hole 218 that mates with the guide rod 2212. The mating of the guide rod 2212 and the guide hole 218 forms a guide trajectory, allowing the support 221 to move smoothly along this guide trajectory.

[0052] like Figures 8 to 10 As shown, probe 222 includes probe body 2221, probe head 2222, and handle. Probe head 2222 and handle are located at opposite ends of probe body 2221. Probe head 2222 can contact characteristic points of the femoral condyle.

[0053] like Figure 9 and Figure 10As shown, the first body 21 is also provided with a third through groove 219 communicating with the guide hole 218. The guide rod 2212 is provided with a second indicating structure 2213 located within the third through groove 219. The second indicating structure 2213 cooperates with the second scale line 212. The cooperation between the second indicating structure 2213 and the second scale line 212 can accurately display the movement position of the first body 21 relative to the guide rod 2212, facilitating the acquisition of the corresponding values ​​of the characteristic points of the femoral condyle. The second indicating structure 2213 is preferably an indicating post. Since the indicating post is located within the third through groove 219, it can prevent the guide rod 2212 from rotating relative to the first body 21, allowing the first body 21 to move only along the guide trajectory formed by the cooperation of the guide rod 2212 and the guide hole 218, which helps improve the accuracy of obtaining the corresponding values ​​of the characteristic points of the femoral condyle.

[0054] like Figure 1 , Figures 12 to 14 As shown, the gap balancing measuring tool includes: a base 10, a moving part 30, a swinging part 40, and a second driving part 57. The base 10 includes a second main body 11 and a placement platform 12 disposed on the second main body 11. A third scale line 111 is provided on the side wall of the second main body 11. The moving part 30 is movably inserted through the second main body 11. The osteotomy tool is disposed on the moving part 30, and a fourth scale line 31 and a third indicating structure 32 cooperating with the third scale line 111 are provided at intervals on the side wall of the moving part 30. The swinging part 40 is swingably inserted through the moving part 30 and located above the placement platform 12. The swinging part 40 includes a swinging body 41 and a fourth indicating structure 42 disposed on the swinging body 41 and cooperating with the fourth scale line 31. The second driving part 57 drives the moving part 30 and the osteotomy tool to move up and down. The connecting plate mentioned above is connected to the moving part 30 by screwing or bonding. The placement platform 12 and the swing body 41 are placed in the osteotomy gap when the knee joint is in a flexed position, so that the placement platform 12 is positioned above the tibial plateau 104. The moving part 30 is driven upward by the drive component, which in turn moves the swing part 40 upward until it fills the osteotomy gap, allowing the swing part 40 to contact and engage with the osteotomy surface of the femoral condyle 103. At this point, the third indicator structure 32 points to the corresponding mark on the third scale line 111, indicating the size of the osteotomy gap when the knee joint is in a flexed position. Simultaneously, when the knee joint is in a flexed position, due to the different tensions between the left ligament 101 and the right ligament 102, the swing part swings around the moving part 30 under the action of these tensions, causing the fourth indicator structure 42 to point to the corresponding mark on the fourth scale line 31, thus obtaining the valgus angle and the tension state of the left and right ligaments. Similarly, the external rotation angle and the tension state of the left and right ligaments when the knee joint is in a flexed position can be obtained.

[0055] like Figure 1 , Figures 12 to 14As shown, the movable component 30 includes a movable body 33 and a support portion 34 disposed on the movable body 33. The movable body 33 is movably inserted through a third mounting hole 113, a third indicating structure 32 is disposed on the movable body 33 and located within a third through groove 114, and a portion of the swing body 41 is inserted within the support portion 34. The third mounting hole 113 serves as a guide for the movable body 33. The third through groove 114 avoids the third indicating structure 32, allowing the third indicating structure 32 to be exposed outside the second body 11. A scale plate 35 is disposed on the side wall of the support portion 34, and a fourth scale line 31 is disposed on the scale plate 35. The scale plate 35 serves as a carrier for the fourth scale line 31. Specifically, the scale plate 35 has an elongated hole, the end of the fourth indicating structure 42 extends into the elongated hole, and a groove is disposed on the end of the fourth indicating structure 42, the width of which is equal to the width of the fourth scale line 31. The swing body 41 is provided with a rotating shaft, and the support part 34 is provided with a rotating hole that mates with the rotating shaft, so that the rotating shaft can rotate in the rotating hole, causing the rotating shaft of the swing body 41 to swing around the support part 34. The ends of the third indicating structure 32 and the fourth indicating structure 42 are preferably indicating posts.

[0056] like Figure 13 As shown, the second main body 11 is also provided with a fourth mounting hole 117 communicating with the third mounting hole 113. The axis of the fourth mounting hole 117 is perpendicular to the axis of the third mounting hole 113. The second driving member 57 passes through the fourth mounting hole 117, and the second driving member 57 drives the moving body 33 to move through the transmission structure 61. The communication between the third mounting hole 113 and the fourth mounting hole 117 allows the second driving member 57 to drive the moving body 33 to move through the transmission structure 61. Under the action of the transmission structure 61, the rotation of the second driving member 57 can be transmitted to the moving body 33, so that the moving body 33 can move up and down. The perpendicularity of the axis of the fourth mounting hole 117 to the axis of the third mounting hole 113 ensures that the second driving member 57 will not deviate when driving the moving body 33 to move. In this embodiment, the swing body 41 is a swing plate.

[0057] like Figure 13As shown, the second main body 11 has a mounting groove 115 and a fifth mounting hole 116 on its side wall. The mounting groove 115 communicates with the fifth mounting hole 116, and the fifth mounting hole 116 communicates with the third mounting hole 113. The clearance balancing measuring tool also includes a force-applying component 71 and a locking component 72. The force-applying component 71 is pivotally mounted in the mounting groove 115, and the locking component 72 is movably mounted in the fifth mounting hole 116. The locking component 72 and the transmission structure 61 are located on opposite sides of the moving body 33. The force-applying component 71 applies force to the locking component 72 so that the locking component 72 can lock the moving body 33. In this way, while ensuring that the locking component 72 effectively locks the moving body 33, the force-applying component 71 can prevent the locking component 72 from retracting. The force-applying component 71 is rotatably connected to the side wall of the mounting groove via a pivot 76.

[0058] like Figure 13 As shown, a toothed structure is provided between the locking member 72 and the movable body 33. The toothed structure includes a mating tooth 73 and a locking tooth 74 that abuts against the mating tooth 73. The mating tooth 73 includes multiple teeth and is disposed on the movable body 33. The locking tooth 74 is disposed on the locking member 72. When the locking tooth 74 engages with different teeth, the movable body 33 is in different locking positions relative to the locking member 72. In this way, the movable body 33 can be in different height positions to meet the requirement that the swing member 40 fills different osteotomy gap sizes.

[0059] like Figure 13 As shown, the gap balancing measuring tool also includes an elastic element 75 disposed within the mounting groove 115. The two ends of the elastic element 75 abut against the bottom of the mounting groove 115 and the force-applying element 71, respectively. The elastic element 75 is able to continuously abut against the force-applying element 71, so that the force-applying element 71 remains in a state of pushing against the locking element 72, thereby reliably locking the moving body 33. When the moving body 33 moves downward, the force-applying element 71 is pressed, at which point the locking element 72 separates from the moving body 33, and the moving body 33 moves downward. The elastic element 75 is preferably a spring or an elastic body.

[0060] like Figure 13 and Figure 14 As shown, the transmission structure 61 includes a first transmission gear 611 and a second transmission gear 612 that engages with the first transmission gear 611. The first transmission gear 611 is disposed on the second driving member 57, and the second transmission gear 612 is disposed on the moving body 33. The engagement of the first transmission gear 611 and the second transmission gear 612 enables the second driving member 57 to smoothly drive the moving body 33 to move up and down.

[0061] like Figures 12 to 15As shown, the osteotomy device also includes a torque wrench 90 that drives the first drive member 51 or the second drive member 57 to rotate. The torque wrench 90 includes an indicator dial 91. When the torque wrench 90 drives the second drive member 57 to rotate, the swing body 41 on the moving body 33 contacts and engages with the femoral condyle osteotomy surface, at which time the value on the indicator dial 91 is zero. As the torque wrench 90 continues to rotate, the swing body 41 will apply a resisting force to the femoral condyle osteotomy surface. The swing body 41 first overcomes the gravity of the joint and then gradually moves upward and pulls the left and right ligaments until the left and right ligaments are taut. If the swing body 41 continues to apply force, the indicated value on the indicator dial 91 will also gradually rise. The torque of the torque wrench 90 will reflect the tension state of the left and right ligaments, that is, it will show the average tension of the left and right ligaments when the knee is flexed.

[0062] When the torque wrench 90 drives the first driving component 51 to rotate, the first driving component 51 drives the first main body 21 to move up and down.

[0063] The gap balancing measurement tool of this application can also be used in orthopedic surgeries with similar needs.

[0064] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0065] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0066] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An osteotomy device, characterized in that, include: Gap balancing measuring tool; The osteotomy tool includes a first body (21) and a probe assembly (22). The first body (21) is movably mounted on the gap balancing measuring tool. A first scale line (211) and a second scale line (212) are provided on the side wall of the first body (21). Fixing holes (213) and a first osteotomy channel (214) are provided on the first body (21) at intervals. The probe assembly (22) includes a bracket (221) and a probe (222) movably inserted through the bracket (221). The bracket (221) is movably inserted through the first body (21). A second osteotomy channel (223) is provided on the bracket (221). The first driving component (51) is rotatably disposed on the gap balancing measuring tool and is capable of driving the osteotomy tool to move up and down; The oscillating saw (52) is removably inserted into the first osteotomy channel (214) or the second osteotomy channel (223). The gap balancing measurement tool includes: The base (10) includes a second body (11) and a placement platform (12) disposed on the second body (11). A third scale line (111) is provided on the side wall of the second body (11). The movable part (30) is movably inserted through the second body (11), the osteotomy tool is disposed on the movable part (30), and the side wall of the movable part (30) is provided with a fourth scale line (31) and a third indicator structure (32) that cooperates with the third scale line (111). The swing member (40) is swingably inserted through the movable member (30) and located above the placement platform (12). The swing member (40) includes a swing body (41) and a fourth indicator structure (42) disposed on the swing body (41) and cooperating with the fourth scale line (31). The second driving component (57) drives the moving component (30) and the osteotomy tool to move up and down; The second main body (11) is provided with a third mounting hole (113). The moving part (30) includes a moving body (33), which is movably inserted through the third mounting hole (113). The second driving part (57) drives the moving body (33) to move through the transmission structure (61). The second main body (11) has a mounting groove (115) and a fifth mounting hole (116) on its side wall. The mounting groove (115) is connected to the fifth mounting hole (116), and the fifth mounting hole (116) is connected to the third mounting hole (113). The gap balancing measuring tool also includes a force-applying component (71) and a locking component (72). The force-applying component (71) is pivotally disposed in the mounting groove (115), and the locking component (72) is movably disposed in the fifth mounting hole (116). The locking component (72) and the transmission structure (61) are located on both sides of the moving body (33). The force-applying component (71) applies force to the locking component (72) so that the locking component (72) can lock the moving body (33). A toothed structure is provided between the locking member (72) and the moving body (33). The toothed structure includes a mating tooth (73) and a locking tooth (74) that abuts against the mating tooth (73). The mating tooth (73) includes multiple teeth. The mating tooth (73) is provided on the moving body (33). The locking tooth (74) is provided on the locking member (72). When the locking tooth (74) engages with different teeth, the moving body (33) is in different locking positions relative to the locking member (72). The gap balancing measuring tool also includes an elastic element (75) disposed in the mounting groove (115), with the two ends of the elastic element (75) abutting against the bottom of the mounting groove (115) and the force-applying element (71), respectively. The force-applying component (71) is rotatably connected to the side wall of the mounting groove (115) via a pivot (76), and the elastic component (75) and the locking component (72) are located on both sides of the pivot (76). The locking member (72) is provided with a socket that communicates with the mounting groove (115). A part of the force-applying member (71) extends into the socket and abuts against the wall of the socket. Another part of the force-applying member (71) extends out of the mounting groove (115) and abuts against one end of the elastic member (75). The outer contour of the part of the force-applying member (71) inserted into the socket is an arc surface. A relief concave surface is provided on the part between the part of the force-applying member (71) and the other part of the force-applying member (71). The relief concave surface avoids the movement of the locking member (72).

2. The osteotomy device according to claim 1, characterized in that, The first main body (21) is provided with a first mounting hole (215), and the gap balancing measuring tool is provided with an elongated hole (53) communicating with the first mounting hole (215). The first driving member (51) is an eccentric wheel. The first driving member (51) includes a driving body (511) and an eccentric shaft (512) connected to the driving body (511). The driving body (511) is located in the first mounting hole (215), and the eccentric shaft (512) passes through the elongated hole (53).

3. The osteotomy device according to claim 2, characterized in that, The first body (21) is provided with a second mounting hole (216) communicating with the first mounting hole (215). The axis of the second mounting hole (216) is inclined to or perpendicular to the axis of the first mounting hole (215). The osteotomy tool also includes a stop structure disposed in the second mounting hole (216) and cooperating with the drive body (511).

4. The osteotomy device according to claim 3, characterized in that, The first mounting hole (215) is clearance-fitted with the first driving member (51). The stop structure includes an elastic member (23) and a ball (24). The elastic member (23) is located in the second mounting hole (216). The ball (24) is located between the elastic member (23) and the side wall of the driving body (511). The side wall of the driving body (511) is provided with a plurality of grooves (5111) spaced apart. When the ball (24) is fitted with different grooves (5111), the driving body (511) is provided with a first indicator structure (5112) that fits with the first scale line (211).

5. The osteotomy device according to claim 2, characterized in that, The first osteotomy channel (214) includes a first through groove (2141) and a second through groove (2142). The first through groove (2141) and the second through groove (2142) are located on both sides of the first mounting hole (215). The end of the first through groove (2141) away from the first mounting hole (215) is an open end, and the end of the second through groove (2142) away from the first mounting hole (215) is an open end.

6. The osteotomy device according to claim 5, characterized in that, The first body (21) is also provided with a through hole (217), the axis of the through hole (217) is parallel to the first mounting hole (215), a connecting post (25) and a connecting sleeve (26) are provided in the through hole (217), the connecting sleeve (26) is movably sleeved on the connecting post (25), and the axis of the connecting sleeve (26) is perpendicular to the axis of the connecting post (25). The osteotomy tool also includes an intramedullary rod (27), the intramedullary rod (27) is connected to the connecting sleeve (26).

7. The osteotomy device according to claim 1, characterized in that, The osteotomy tool cooperates with the gap balancing measuring tool through a guide structure. The guide structure includes a first guide part (55) and a second guide part (56) that cooperates with the first guide part (55). The first guide part (55) is disposed on the gap balancing measuring tool, and the second guide part (56) is disposed on the osteotomy tool. The first drive member (51) is rotatably disposed on the first guide part (55).

8. The osteotomy device according to claim 1, characterized in that, The support (221) includes a support platform (2211) and a guide rod (2212) connected to the support platform (2211). The probe (222) is movably disposed at the end of the support platform (2211). The second osteotomy channel (223) passes through the two opposite sides of the support platform (2211). The first body (21) is also provided with a guide hole (218) that cooperates with the guide rod (2212).

9. The osteotomy device according to claim 8, characterized in that, The first main body (21) is also provided with a third through groove (219) communicating with the guide hole (218), and the guide rod (2212) is provided with a second indicator structure (2213) located in the third through groove (219), and the second indicator structure (2213) cooperates with the second scale line (212).

Images