Joint soft tissue balance measurement device

Abstract

The present invention provides a joint soft tissue balance measurement device, comprising: an osteophyte removal structure comprising an insert plate and a connector connected to the insert plate, the connector having osteotomy channels and fixation holes spaced apart, the osteotomy channels extending through opposite sides of the connector; and a gap balance measurement tool comprising a balance measurement assembly and a supplementary component mounted on the balance measurement assembly. The technical solution of this application effectively addresses the problem in related art where osteophytes interfere with normal ligament traction, resulting in low detection accuracy of gap balance surgical tools.

Description

Technical Field

[0001] The present invention relates to the field of orthopedic medical devices, and in particular to a joint soft tissue balance measuring device. Background Art

[0002] With the widespread use and continued development of total knee replacement surgery, doctors are increasingly demanding precision during joint replacement surgeries to improve success rates, reduce surgical risks, enhance patient recovery, and enhance the surgical experience. This requires not only precision manufacturing of surgical instruments but also advanced design concepts that can provide doctors with more accurate information to ensure accurate judgment and successful surgery.

[0003] In artificial knee replacement surgery of related technologies, the use of gap balancing osteotomy is a mature surgical technique. This method usually has a dedicated gap balancing measurement tool, which includes a fixed plate located on the tibial side and a rotating plate located on the tibial side. The fixed plate serves as a reference, and the rotating plate is used to measure the external rotation angle and valgus angle of the femoral condyle. After obtaining accurate bone feature data, the doctor will generally choose to osteotomize 9mm at the posterior condyle of the femoral condyle to achieve prosthesis installation. The rotating plate realizes the rotation movement and measures the characteristic value, which depends on the normal traction of the ligaments and soft tissues around the femoral condyle. Osteophytes often grow around the femoral condyle. These osteophytes affect the normal traction of the ligaments, making the detection accuracy of the gap balancing surgical tool not high. Summary of the Invention

[0004] The main purpose of the present invention is to provide a joint soft tissue balance measurement device to solve the problem in the related art that osteophytes affect the normal traction of ligaments, resulting in low detection accuracy of gap balance surgical tools.

[0005] In order to achieve the above-mentioned objectives, the present invention provides a joint soft tissue balance measurement device, including: a bone spur removal structure, including an insert plate and a connecting piece connected to the insert plate, osteotomy channels and fixing holes are arranged at intervals on the connecting piece, and the osteotomy channels pass through the two opposite sides of the connecting piece; a gap balance measurement tool, including a balance measurement component and a supplementary component arranged on the balance measurement component.

[0006] Furthermore, the connecting piece includes a first connecting section and a middle section, the middle section is connected between the insertion plate and the first connecting section, the width of the middle section is greater than the width of the insertion plate, the osteotomy channel is arranged on the middle section, and the fixing hole is arranged on the first connecting section.

[0007] Furthermore, there are multiple first connecting sections, and avoidance gaps are formed between the multiple first connecting sections; the osteotomy channel has an inlet and an outlet, and a flaring guide section is provided at the inlet.

[0008] Furthermore, the insert plate includes an insert segment and a second connecting segment connected to the connecting piece. The upper surface of the insert segment is a plane, and the thickness of the insert segment gradually decreases in a direction away from the second connecting segment.

[0009] Furthermore, the cross section of the insertion section is an inverted trapezoid.

[0010] Furthermore, the osteophyte removal structure further includes an oscillating saw and a bone knife that can be removably passed through the osteotomy channel, and the osteophyte removal structure further includes a fixing nail that is inserted into the fixing hole.

[0011] Furthermore, the balance measurement component includes: a base, including a main body and a placement platform arranged on the main body, and a first scale line is arranged on the side wall of the main body; a movable part, movably arranged in the main body, and a second scale line and a first indication structure cooperating with the first scale line are arranged at intervals on the side wall of the movable part; a swinging part, swingably arranged in the moving part and located above the placement platform, the swinging part includes a swinging body and a second indication structure arranged on the swinging body and cooperating with the second scale line, and the supplementary part is arranged on the side of the swinging body away from the placement platform; a driving part, driving the movable part to move up and down.

[0012] Furthermore, a first mounting hole and a second mounting hole connected to the first mounting hole are provided on the main body, the axis of the second mounting hole is arranged perpendicular to the axis of the first mounting hole, the movable member includes a movable body and a support portion arranged on the movable body, the movable body is movably passed through the first mounting hole, a part of the swinging body is passed through the support portion, a scale plate is provided on the side wall of the support portion, the second scale line is provided on the scale plate, the driving member is passed through the second mounting hole, and the driving member drives the movable body to move through the transmission structure.

[0013] Furthermore, a mounting groove and a third mounting hole are provided on the side wall of the main body, and the mounting groove is connected to the first mounting hole through the third mounting hole; the joint soft tissue balance measurement device also includes a force-applying member and a locking member, the force-applying member can be pivotally arranged in the mounting groove, and the locking member can be movably located in the third mounting hole, the locking member and the transmission structure are respectively located on both sides of the movable body, and the force-applying member applies force to the locking member so that the locking member can lock the movable body.

[0014] Furthermore, a tooth structure is provided between the locking member and the movable body, the tooth structure including a mating tooth and a locking tooth abutting against the mating tooth, the mating tooth including a plurality of tooth portions, one of the mating tooth and the locking tooth being provided on the movable body, and the other being provided on the locking member, when the locking tooth is mated with different tooth portions, the movable body is in different locking positions relative to the locking member.

[0015] Applying the technical solution of the present invention, a joint soft tissue balance measurement device includes: a bone spur removal structure and a gap balance measurement tool. The bone spur removal structure includes an insert plate and a connector connected to the insert plate. Osteotomy channels and fixing holes are provided on the connector at intervals, and the osteotomy channels extend through two opposite sides of the connector. The gap balance measurement tool includes a balance measurement component and a supplementary component provided on the balance measurement component. The bone insert plate is placed on the tibial plateau, and the bone spur removal structure can be fixed to the medial posterior condyle position using fixing pins through the fixing holes. An oscillating saw can be used to pre-cut a certain size of osteotomy through the osteotomy channel, such as 4mm. The 4mm pre-cut osteotomy can be smaller than the standard 9mm osteotomy of the posterior condyle of the femoral condyle. After the 4mm pre-cut osteotomy is removed, the oscillating saw is removed from the osteotomy channel, and a bone cutter can be used to penetrate the osteophyte along the osteotomy channel. Since the 4mm pre-cut osteotomy is removed from the posterior condyle, the distance between the bone cutter and the osteophyte is reduced, making it easier for the bone cutter to remove the osteophyte. Place the gap balancing measurement tool on the tibial platform. The supplementary part of the gap balancing measurement tool can fill the gap left after the 4mm pre-osteotomy, so that the gap balancing measurement tool can normally measure the osteotomy gap. At the same time, after the osteophyte is removed by the bone knife, the left ligament and the right ligament are no longer hindered by the osteophyte when they are pulled, so that the left ligament and the right ligament can be pulled normally. The gap balancing surgical tool can accurately obtain the size of the osteotomy gap and the tension state of the left and right ligaments, ensuring the detection accuracy of the gap balancing surgical tool. Therefore, the technical solution of the present application effectively solves the problem in the related art that osteophytes affect the normal pulling of the ligaments, resulting in low detection accuracy of the gap balancing surgical tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 1. A cross-sectional schematic diagram of a process of removing osteophytes with a bone knife in the related art is shown;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of a joint soft tissue balance measurement device for osteophyte removal according to the present invention is shown;

[0019] Figure 3 Shown Figure 2 Left side schematic diagram of the osteophyte removal structure;

[0020] Figure 4 Shown Figure 2 Left side view of the osteophyte removal structure placed in the knee joint in the flexed position;

[0021] Figure 5 Shown Figure 2A simplified structural diagram of the osteotome of the joint soft tissue balance measurement device;

[0022] Figure 6 Shown Figure 2 A schematic diagram of the three-dimensional structure of a gap balance measurement tool of a joint soft tissue balance measurement device;

[0023] Figure 7 Shown Figure 6 A partially exploded structural diagram of a gap balance measurement tool;

[0024] Figure 8 Shown Figure 6 A schematic diagram of the main view of the gap balance measurement tool when placed on the knee joint in the flexed position;

[0025] Figure 9 Shown Figure 6 A schematic cross-sectional view of a gap balance measuring tool at a first cutting position;

[0026] Figure 10 Shown Figure 6 A schematic cross-sectional view of a gap balance measuring tool at a second cross-sectional position; and

[0027] Figure 11 Shown Figure 6 Schematic diagram of the three-dimensional structure of a torque wrench as a gap balancing measurement tool.

[0028] The above drawings include the following reference numerals:

[0029] 101. Left ligament; 102. Right ligament; 103. Femoral condyle; 104. Tibial plateau; 105. Osteophyte; 10. Base; 11. Main body; 111. First scale mark; 112. Through hole; 113. First mounting hole; 114. Through slot; 115. Mounting slot; 116. Third mounting hole; 117. Second mounting hole; 12. Placement platform; 20. Osteophyte removal structure; 21. Insertion plate; 211. Insertion section; 212. Second connecting section; 22. Connector; 221. First connecting section; 222. Middle section; 223. Avoidance gap; 23. Osteotomy channel; 231. Inlet; 232. Outlet; 24 , fixing hole; 25, bone knife; 26, swing saw; 27, fixing nail; 30, moving part; 31, second scale line; 32, first indication structure; 33, moving body; 34, supporting part; 35, scale plate; 40, swing part; 41, swing body; 42, second indication structure; 44, assembly hole; 50, driving part; 61, transmission structure; 611, first transmission tooth; 612, second transmission tooth; 63, supplementary part; 631, assembly column; 64, reference rod; 71, force member; 72, locking member; 73, mating tooth; 74, locking tooth; 75, elastic member; 76, pivot; 90, torque wrench; 91, indicator disk. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0033] like Figure 1 As shown, in the related art, osteophytes 105 often grow hidden, making it difficult to insert a bone cutter 25 between the femoral condyle 103 and the tibial plateau 104 to remove the osteophytes 105 at the posterior condyle with varus flexion contracture. The present application provides a joint soft tissue balance measurement device, wherein the osteophyte removal structure 20 of the joint soft tissue balance measurement device is capable of removing the osteophytes 105 at the posterior condyle with varus flexion contracture.

[0034] like Figures 2 to 5 As shown, the joint soft tissue balance measurement device of this embodiment includes an osteophyte removal structure 20 and a gap balance measurement tool. The osteophyte removal structure 20 includes an insert plate 21 and a connector 22 connected to the insert plate 21. The connector 22 is provided with osteotomy channels 23 and fixing holes 24 at intervals. The osteotomy channels 23 extend through opposite sides of the connector 22. The gap balance measurement tool includes a balance measurement assembly and a supplementary member 63 disposed on the balance measurement assembly.

[0035] Using the technical solution of this embodiment, the bone insert plate 21 is placed on the tibial plateau 104, and the osteophyte removal structure 20 can be fixed to the medial posterior condyle using the fixing pin 27 through the fixing hole 24. An oscillating saw 26 can be used to pre-cut a certain size of osteotomy through the osteotomy channel 23, such as 4mm. The 4mm pre-osteotomy can be smaller than the standard 9mm osteotomy of the posterior condyle of the femoral condyle 103. After the 4mm pre-osteotomy is removed, the oscillating saw 26 is removed from the osteotomy channel 23, and the osteotome 25 can be used to penetrate along the osteotomy channel 23 to the osteophyte 105. Since the 4mm pre-osteotomy is removed from the posterior condyle, the distance between the osteotome 25 and the osteophyte 105 is reduced, making it easier for the osteotome 25 to remove the osteophyte 105. The gap balancing measurement tool is placed on the tibial plateau 104. The gap balancing measurement tool's supplementary piece 63 can fill the gap left after the 4mm pre-osteotomy is removed, allowing the gap balancing measurement tool to properly measure the osteotomy gap. At the same time, after osteotome 25 removes osteophyte 105, the left ligament 101 and the right ligament 102 are no longer obstructed by osteophyte 105, allowing normal tension between the left and right ligaments. The gap balancing surgical tool can accurately determine the size of the osteotomy gap and the tension status of the left and right ligaments, ensuring the detection accuracy of the gap balancing surgical tool. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where osteophytes affect normal ligament tension, resulting in low detection accuracy of the gap balancing surgical tool.

[0036] It should be noted that there is only one insertion plate 21. In this way, the insertion plate 21 only needs to be inserted below the posterior condyle close to the osteophyte 105, and does not need to be inserted below the entire posterior condyle. When the oscillating saw 26 is used to cut off the 4mm pre-osteotomy later, it is only necessary to cut off the pre-osteotomy on one side of the posterior condyle, and there is no need to cut off the pre-osteotomy on both sides of the posterior condyle. This is beneficial to improving the efficiency of the joint soft tissue balance measuring device in obtaining the size of the osteotomy gap and the tension status of the left and right ligaments.

[0037] like Figure 2 and Figure 3 As shown, in order for the insert plate 21 to extend between the femoral condyle 103 and the tibial plateau 104 while avoiding the left ligament 101 and the right ligament 102, the connector 22 includes a first connecting section 221 and a middle section 222. The middle section 222 is connected between the insert plate 21 and the first connecting section 221. The width of the middle section 222 is greater than the width of the insert plate 21. The osteotomy channel 23 is provided in the middle section 222, and the fixing hole 24 is provided in the first connecting section 221. Thus, during the insertion of the insert plate 21 between the femoral condyle 103 and the tibial plateau 104, the width of the insert plate 21 is smaller than the width of the middle section 222, preventing the insert plate 21 from contacting the left ligament 101 and the right ligament 102, thereby preventing damage to the left ligament 101 or the right ligament 102.

[0038] In addition, the width of the middle section 222 is greater than the width of the insert plate 21 , which facilitates the opening of the osteotomy channel 23 in the middle section 222 , so that the oscillating saw 26 can easily pass through the osteotomy channel 23 .

[0039] like Figure 2 and Figure 3 As shown, there are multiple first connecting segments 221, with an avoidance gap 223 formed between two first connecting segments 221. The provision of the avoidance gap 223 not only allows the surgeon to see the bone condition behind the femoral condyle 103, but also reduces the structural weight of the osteophyte removal structure 20. The osteotomy channel 23 has an entrance 231 and an exit 232. A flaring guide section is provided at the entrance 231. The entrance 231 of the flaring guide section allows the oscillating saw 26 or the osteotome 25 to be smoothly inserted into the osteotomy channel 23.

[0040] like Figure 2 and Figure 3 As shown, the insert plate 21 includes an insert section 211 and a second connecting section 212 connected to the connecting member 22. The upper surface of the insert section 211 is flat, and the thickness of the insert section 211 gradually decreases in the direction away from the second connecting section 212. In this way, the thickness of the insert plate 21 is as thin as possible, and at the same time, the upper surface of the insert section 211 only needs to contact the lowest point of the femoral condyle 103, so that the insert plate 21 can be placed in place.

[0041] like Figure 2 and Figure 3 As shown, due to the small gap between the femoral condyle 103 and the tibial plateau 104, the cross section of the insertion section 211 is an inverted trapezoid. Like this, it is convenient for the insertion section 211 to be inserted between the femoral condyle 103 and the tibial plateau 104.

[0042] like Figures 2 to 4 As shown, the osteophyte removal structure 20 also includes an oscillating saw 26 and a bone cutter 25 that are removably inserted through the osteotomy channel 23. The oscillating saw 26 can cut 4 mm of pre-resection bone from the posterior condyle. The provision of the bone cutter 25 facilitates the osteophyte removal structure 20 in removing the osteophyte 105. The osteophyte removal structure 20 also includes a fixing pin 27 that is inserted into the fixing hole 24. The combination of the fixing pin 27 and the fixing hole 24 can reliably fix the osteophyte removal structure 20 at the medial posterior condyle.

[0043] Of course, in other embodiments not shown in the figures, the number of first connecting segments may not be limited to two, and may be one, three or more, as long as a certain number of fixing holes can be opened on the first connecting segment.

[0044] like Figures 6 to 11As shown, the balance measurement assembly includes: a base 10, a moving part 30, a swinging part 40 and a driving part 50. The base 10 includes a main body 11 and a placement platform 12 arranged on the main body 11. A first scale line 111 is provided on the side wall of the main body 11. The moving part 30 is movably arranged in the main body 11, and a second scale line 31 and a first indication structure 32 that cooperates with the first scale line 111 are arranged at intervals on the side wall of the moving part 30. The swinging part 40 is swingably arranged in the moving part 30 and is located above the placement platform 12. The swinging part 40 includes a swinging body 41 and a second indication structure 42 that is arranged on the swinging body 41 and cooperates with the second scale line 31. The supplementary part 63 is arranged on the side of the swinging body 41 away from the placement platform 12. The driving part 50 drives the moving part 30 to move up and down. Place the placement platform 12 and the swinging member 40 in the osteotomy gap when the knee joint is in the flexed position, and drive the movable member 30 to move upwards through the driving member. The movable member 30 can drive the swinging member 40 to move upwards until the osteotomy gap is filled, so that the swinging member 40 contacts and cooperates with the osteotomy surface of the femoral condyle. At this time, the first indicator structure 32 points to the corresponding scale on the first scale line 111, and the size of the osteotomy gap when the knee joint is in the flexed position is obtained. At the same time, when the knee joint is in the flexed position, due to the different tension between the left ligament and the right ligament, the swinging member swings around the movable member 30 under the action of the tension, and drives the second indicator structure 42 to point to the corresponding scale on the second scale line 31, and the valgus angle and the tension state of the left and right ligaments are obtained. Similarly, the external rotation angle and the tension state of the left and right ligaments when the knee joint is in the flexed position can be obtained. Figure 7 As shown, to facilitate quick installation of the supplementary member 63 on the swing body 41, the supplementary member 63 includes a supplementary body and a mounting post 631 disposed on the supplementary body. The swing body 41 is provided with a mounting hole 44 that mates with the mounting post 631. When the mounting post 631 mates with the mounting hole 44, the supplementary member 63 is quickly installed on the swing body 41. The supplementary member 63 is preferably a supplementary block having a thickness of 4 mm.

[0045] like Figure 7 and Figure 9As shown, the main body 11 is provided with a first mounting hole 113 and a second mounting hole 117 connected to the first mounting hole 113, and the axis of the second mounting hole 117 is arranged perpendicular to the axis of the first mounting hole 113. The movable member 30 includes a movable body 33 and a support portion 34 disposed on the movable body 33. The movable body 33 is movably disposed through the first mounting hole 113, and a portion of the swinging body 41 is disposed through the support portion 34. A scale plate 35 is disposed on the side wall of the support portion 34, and the second scale line 31 is disposed on the scale plate 35. The scale plate 35 can serve as a carrier for the second scale line 31. Specifically, the scale plate 35 is provided with an elongated hole, and the end of the second indicating structure 42 extends into the elongated hole. The end of the second indicating structure 42 is provided with a wire groove, and the groove width of the wire groove is equal to the line width of the second scale line 31. The driving member 50 is disposed through the second mounting hole 117, and the driving member 50 drives the movable body 33 to move via the transmission structure 61. The axis of the second mounting hole 117 is perpendicular to the axis of the first mounting hole 113 so that the driving member 50 does not deflect when driving the movable body 33. The ends of the first indicating structure 32 and the second indicating structure 42 are preferably indicating posts.

[0046] like Figure 7 and Figure 9 As shown, the main body 11 is further provided with a through slot 114 that communicates with the first mounting hole 113. The first indicator structure 32 is disposed on the movable body 33 and is located within the through slot 114. The swing body 41 is provided with a rotating shaft, and the support portion 34 is provided with a rotating hole that cooperates with the rotating shaft. In this way, the rotating shaft can rotate in the rotating hole, so that the rotating shaft of the swing body 41 swings around the support portion 34.

[0047] like Figures 7 to 9As shown, the main body 11 is provided with a reference rod 64 extending in a preset direction. The main body 11 is provided with a through hole 112, and the reference rod 64 is detachably inserted into the through hole 112. The placement platform 12 and the swinging member 40 are placed in the osteotomy gap when the knee joint is in a flexed position. The reference rod 64 is used to measure whether the central axis of the placement platform 12 is aligned with the lower limb force line and adjusted to a coincident position. Based on this, the osteotomy gap size, valgus angle, external rotation angle, and left and right ligament tension are obtained using the gap balancing measurement tool. Thus, by using the reference rod 64 to measure whether the central axis of the placement platform 12 is aligned with the lower limb force line and adjusted to a coincident position, the accuracy of the values ​​obtained during the process of obtaining the osteotomy gap size, valgus angle, external rotation angle, and left and right ligament tension is improved, significantly reducing measurement errors and improving detection accuracy, thereby accurately obtaining the measured values. After obtaining the osteotomy gap size, valgus angle, external rotation angle, and left and right ligament tension, it is possible to intuitively and accurately determine whether the degree of release of the left and right ligaments needs to be adjusted. When necessary, the knee joint is balanced to maintain soft tissue release. The joint soft tissue balance measurement component allows osteotomy to be performed while measuring the specific characteristic values ​​of the femoral condyle, making the surgery more precise and scientific.

[0048] like Figures 7 to 10 As shown, a mounting groove 115 and a third mounting hole 116 are provided on the side wall of the main body 11, and the mounting groove 115 is connected to the first mounting hole 113 through the third mounting hole 116. The joint soft tissue balance measuring device also includes a force-applying member 71 and a locking member 72. The force-applying member 71 is pivotally arranged in the mounting groove 115, and the locking member 72 is movably located in the third mounting hole 116. The locking member 72 and the transmission structure 61 are respectively located on both sides of the movable body 33. The force-applying member 71 applies force to the locking member 72 so that the locking member 72 can lock the movable body 33. The force-applying member 71 applies force to the locking member 72 so that the locking member 72 can lock the movable body 33. In this way, while ensuring that the locking member 72 has the effect of locking the movable body 33, the force-applying member 71 can prevent the locking member 72 from retreating. The force-applying member 71 is rotatably connected to the side wall of the mounting groove through the pivot 76.

[0049] like Figures 7 to 9 As shown, a tooth structure is provided between the locking member 72 and the movable body 33. The tooth structure includes a mating tooth 73 and a locking tooth 74 that abuts against the mating tooth 73. The mating tooth 73 includes multiple tooth portions. The mating tooth 73 is provided on the movable body 33, and the locking tooth 74 is provided on the locking member 72. When the locking tooth 74 engages with different tooth portions, the movable body 33 is in different locking positions relative to the locking member 72. In this way, the movable body 33 can be positioned at different heights to meet the requirements of the swinging member 40 for filling different osteotomy gaps.

[0050] like Figure 9As shown, the joint soft tissue balance measuring device also includes an elastic member 75 disposed in the mounting groove 115. The two ends of the elastic member 75 respectively abut against the bottom of the mounting groove 115 and the force-applying member 71. The elastic member 75 can always abut against the force-applying member 71, so that the force-applying member 71 always maintains the state of pushing the locking member 72, and then the locking member 72 can reliably lock the movable body 33. When the movable body 33 moves downward, the force-applying member 71 is pressed, and at this time the locking member 72 is separated from the movable body 33, and the movable body 33 moves downward. The elastic member 75 is preferably a spring or an elastomer.

[0051] like Figure 9 As shown, the transmission structure 61 includes a first transmission tooth 611 and a second transmission tooth 612 that cooperates with the first transmission tooth 611. The first transmission tooth 611 is provided on the driving member 50, and the second transmission tooth 612 is provided on the mobile body 33. The cooperation between the first transmission tooth 611 and the second transmission tooth 612 enables the driving member 50 to smoothly drive the mobile body 33 to move up and down.

[0052] like Figures 7 to 11 As shown, the joint soft tissue balance measuring device also includes a torque wrench 90 that drives the driving member 50 to rotate. The torque wrench 90 includes an indicator dial 91. The torque wrench 90 drives the driving member 50 to rotate so that the swinging body 41 on the movable body 33 contacts and cooperates with the osteotomy surface of the femoral condyle. At this time, the value on the indicator dial 91 is zero. When the torque wrench 90 continues to rotate, the swinging body 41 will apply a push force to the osteotomy surface of the femoral condyle. The swinging 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 tightened. If the swinging body 41 continues to apply force, the indicated value of 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 display the average tension of the left and right ligaments when the knee is in the flexed position.

[0053] The joint soft tissue balance measurement device of the present application can also be used in orthopedic surgeries with similar requirements.

[0054] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0057] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A joint soft tissue balance measurement device, characterized in that: include: An osteophyte removal structure (20) comprises an insert plate (21) and a connector (22) connected to the insert plate (21), wherein osteotomy channels (23) and fixing holes (24) are arranged at intervals on the connector (22), and the osteotomy channels (23) pass through two oppositely arranged sides of the connector (22); A gap balance measurement tool comprising a balance measurement component and a supplementary member (63) disposed on the balance measurement component; The balance measurement component includes: A base (10) comprises a main body (11) and a placement platform (12) arranged on the main body (11), wherein a first scale line (111) is provided on a side wall of the main body (11); A movable member (30) is movably provided on the main body (11), and a second scale line (31) and a first indicating structure (32) cooperating with the first scale line (111) are provided on a side wall of the movable member (30) at intervals; a swinging member (40) swingably disposed through the movable member (30) and located above the placement platform (12); the swinging member (40) comprises a swinging body (41) and a second indicating structure (42) disposed on the swinging body (41) and cooperating with the second scale line (31); and the supplementary member (63) is disposed on a side of the swinging body (41) away from the placement platform (12); A driving member (50) drives the moving member (30) to move up and down; A first mounting hole (113) is provided on the main body (11), the movable member (30) includes a movable body (33), the movable body (33) is movably arranged in the first mounting hole (113), and the driving member (50) drives the movable body (33) to move via a transmission structure (61). A mounting groove (115) and a third mounting hole (116) are provided on the side wall of the main body (11), and the mounting groove (115) is communicated with the first mounting hole (113) through the third mounting hole (116); the joint soft tissue balance measuring device further comprises a force-applying member (71) and a locking member (72), the force-applying member (71) being pivotally arranged in the mounting groove (115), the locking member (72) being movably located in the third mounting hole (116), the locking member (72) and the transmission structure (61) being respectively located on both sides of the movable body (33), the force-applying member (71) applying force to the locking member (72) so that the locking member (72) can lock the movable body (33); A tooth structure is provided between the locking member (72) and the movable body (33), the tooth structure comprising a mating tooth (73) and a locking tooth (74) abutting against the mating tooth (73), the mating tooth (73) comprising a plurality of tooth portions, one of the mating tooth (73) and the locking tooth (74) being provided on the movable body (33), and the other being provided on the locking member (72), and when the locking tooth (74) is mated with different tooth portions, the movable body (33) is in different locking positions relative to the locking member (72); The joint soft tissue balance measuring device further comprises an elastic member (75) disposed in the mounting groove (115), with two ends of the elastic member (75) respectively abutting against the bottom of the mounting groove (115) and the force applying member (71); The force applying member (71) is rotatably connected to the side wall of the mounting slot (115) via a pivot (76), and the elastic member (75) and the locking member (72) are respectively located on both sides of the pivot (76). The locking member (72) is provided with a socket connected to the mounting groove (115), a portion of the force-applying member (71) extends into the socket and abuts against the hole wall of the socket, and another portion of the force-applying member (71) extends from the mounting groove (115) to the outside of the mounting groove (115) and abuts against one end of the elastic member (75); wherein the outer contour of the portion of the force-applying member (71) inserted into the socket is an arc surface, and a relief concave surface is provided on the portion between the portion of the force-applying member (71) and the other portion of the force-applying member (71), and the relief concave surface avoids the movement of the locking member (72); The connecting member (22) includes a first connecting section (221) and a middle section (222), the middle section (222) is connected between the insert plate (21) and the first connecting section (221), the width of the middle section (222) is greater than the width of the insert plate (21), the osteotomy channel (23) is provided on the middle section (222), and the fixing hole (24) is provided on the first connecting section (221); There are multiple first connecting sections (221), and avoidance gaps (223) are formed between the multiple first connecting sections (221); the osteotomy channel (23) has an inlet (231) and an outlet (232), and a flaring guide section is provided at the inlet (231).

2. The joint soft tissue balance measurement device according to claim 1, characterized in that: The insert plate (21) comprises an insert section (211) and a second connecting section (212) connected to the connecting piece (22); the upper surface of the insert section (211) is a plane; and the thickness of the insert section (211) gradually decreases in a direction away from the second connecting section (212).

3. The joint soft tissue balance measurement device according to claim 2, characterized in that: The cross section of the insertion section (211) is an inverted trapezoid.

4. The joint soft tissue balance measurement device according to claim 1, characterized in that: The osteophyte removal structure (20) further includes an oscillating saw (26) and a bone knife (25) that are removably passed through the osteotomy channel (23), and the osteophyte removal structure (20) further includes a fixing pin (27) that is inserted into the fixing hole (24).

5. The joint soft tissue balance measurement device according to claim 1, characterized in that: The main body (11) is provided with a second mounting hole (117) connected to the first mounting hole (113), and the axis of the second mounting hole (117) is arranged perpendicular to the axis of the first mounting hole (113). The movable member (30) also includes a support portion (34) arranged on the movable body (33), a part of the swinging body (41) is passed through the support portion (34), a scale plate (35) is provided on the side wall of the support portion (34), the second scale line (31) is provided on the scale plate (35), and the driving member (50) is passed through the second mounting hole (117).

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