TWI422359B - Knee ligament laxity measuring device - Google Patents

Description

Knee ligament relaxation measuring device

The invention relates to a measuring device, in particular to a method for measuring the relaxation of the knee joint ligament by measuring the relative change relationship between the amount of movement and the applied external force by applying an external force to measure the movement of the tibia relative to the femur. Device.

Injury or rupture of the knee ligament is a common type of sports injury. The doctor's treatment of the knee ligament usually depends on the patient's age, whether it is an athlete, the usual way of exercising, the stability of the knee joint, and whether there is any other injury. Factors to consider the method of treatment. When the doctor makes a diagnosis, the patient's knee ligament laxity is measured to assess the degree of ligament injury. Therefore, the correct knee ligament relaxation measurement results can help the doctor to provide correct patient injury information, so that the doctor can diagnose the disease and give the patient the best and immediate medical treatment.

At present, most of the knee ligament relaxation measuring devices used by the medical community are KT1000 measuring instruments produced by MEDmetric, which is based on the knee ligament measuring system disclosed in U.S. Patent No. 4,583,555 and the United States. The knee ligament measuring device and the method of using the same disclosed in Patent No. 4,969,471 are developed. However, the main disadvantage of the aforementioned KT1000 measuring instrument is that the measuring instrument is related to the operator's operating experience when used; therefore, the reliability and reproducibility of the measured data will be affected, thereby misleading the doctor's diagnosis. . Furthermore, the measuring instrument can only measure the anterior and posterior cruciate ligaments, but can not measure the lateral ligament, so it has its limitations.

On the other hand, other existing knee ligament relaxation measuring instruments also have their disadvantages. For example, Airline's Rolimeter measuring instruments can only perform maximum force testing and can only measure the anterior and posterior cruciate ligaments. The operation steps of the LigMaster measuring instrument (developed based on the patents of U.S. Patent No. 5,724,991 and U.S. Patent No. 6,419,645) by Sport Tech are complicated, and the patient must change his posture to measure the ligaments at different positions. The GNRB measuring instrument produced by GeNouRob can only measure the anterior cruciate ligament. Therefore, how to conceive a structural design that can overcome the shortcomings of the current measuring instruments has become the subject of further improvement of the present invention.

The main object of the present invention is to provide a knee ligament relaxation measuring device for measuring the anterior and posterior displacement of the tibia of the lower leg, and the degree of varus and valgus to evaluate the anterior and posterior cruciate ligaments and the inner ligament. The extent of injury to the lateral ligament.

Another object of the present invention is to provide a knee joint ligament relaxation measuring device, which is easy to operate, and can conveniently measure the anterior and posterior cruciate ligaments and the inner and outer ligaments, and measure reliability and accuracy. High, measurement data reproducibility is good.

Another object of the present invention is to provide a knee joint ligament relaxation measuring device having an excellent data display interface and a user interface.

The object of the present invention and solving the prior art problems are achieved by the following technical means. The knee ligament relaxation measuring device according to the present invention is adapted to be mounted on a thigh and a calf connected to the thigh. The knee ligament relaxation measuring device comprises a one-leg socket mechanism, a calf socket mechanism, a first measuring mechanism, and a second measuring mechanism.

The thigh socket mechanism is sleeved on the thigh and includes a first front end surface and a first side surface connected to the first front end surface. The calf socket mechanism is sleeved on the lower leg and includes a second front end surface and a second side surface connected to the second front end surface. The first measuring mechanism is connected between the first front end surface of the thigh socket mechanism and the second front end surface of the calf socket mechanism for measuring the displacement amount of the tibia after being applied by a force in a forward or backward direction. The second measuring mechanism is connected between the first side of the thigh socket mechanism and the second side of the calf socket mechanism for measuring the amount of turnover of the tibia after being applied by a force in a leftward or rightward direction.

A further object of the present invention is to provide a method for measuring the relaxation of a knee joint ligament, which is easy to operate and can conveniently measure the anterior and posterior cruciate ligaments and the medial and lateral ligaments, and has high measurement reliability and accuracy. The measurement data is reproducible.

The object of the present invention and solving the prior art problems are achieved by the following technical means. The knee ligament relaxation measurement method according to the present invention is for measuring a displacement amount of a tibia of a calf after being applied by a force in a forward or backward direction, the method comprising the steps of:

(A) applying a forward or backward force on a forward and backward force applying member, so that a telescopic link module connected to the front and rear force applying members drives a set of the calf socket mechanism attached to the lower leg;

(B) sensing the force applied to the urging member and generating a force sensing signal, and sensing the displacement of the telescopic link module and generating a displacement sensing signal;

(C) Using a computer to extract power sensing signals and displacement sensing signals for operational comparison.

The knee joint ligament relaxation measuring method according to the present invention is for measuring the amount of inversion of a tibia of a calf after being applied by a leftward or rightward force. The method comprises the following steps:

(A) applying a leftward or rightward force to a left and right force applying member to move a set of calf sleeves connected to the left and right force applying members to the calf;

(B) sensing the force applied to the left and right force applying members and generating a force sensing signal, and sensing the amount of inversion of the calf socket mechanism and generating a displacement sensing signal;

(C) Using a computer to extract power sensing signals and displacement sensing signals for operational comparison.

The knee ligament relaxation measurement method according to the present invention is for measuring a displacement amount of a tibia of a calf after being applied by a force in a forward or backward direction, the method comprising the steps of:

(A) applying a forward or backward force on a forward and backward force applying member to move a calf socket mechanism connected to the front and rear force applying members and sleeved to the lower leg;

(B) sensing the force applied to the urging member and generating a force sensing signal, and sensing the displacement of a nodule of the tibia and generating a displacement sensing signal;

(C) Using a computer to extract power sensing signals and displacement sensing signals for operational comparison.

According to the above technical means, the advantages and effects of the knee ligament relaxation measuring device of the present invention are that, by the design of the first measuring mechanism, the energy is measured by the forward displacement of the tibia and the posterior displacement of the tibia, so as to know the front, The degree of injury to the posterior cruciate ligament; the design of the second measuring mechanism, energy measurement of the amount of patella varus and the amount of valgus valgus, to understand the degree of injury of the medial and lateral ligaments; thereby, for professional orthopedic surgeons and Rehabilitation personnel diagnose the condition and give the patient the best and immediate medical care.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. The technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood by the description of the specific embodiments. However, the drawings are only for the purpose of reference and description, and are not intended to limit the invention. .

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. In addition, in the following description, the direction of "forward" refers to the direction in which the human leg moves forward, the direction of "backward" refers to the opposite direction of "forward", and the direction of "upward" refers to From the knees of the human body to the thighs, the direction of "below" refers to the direction from the knees of the human body to the lower legs.

As shown in Figure 1, it is a schematic view of the general human leg. A anterior cruciate ligament 13 and a posterior cruciate ligament 14 are connected between a femur 111 of the thigh 11 and a tibia 121 of the calf 12. An inner ligament 15 is connected between the femur 111 and the inner side of the tibia 121, and the femur 111 and the tibia 121 are connected. An outer ligament 16 is connected between the outer sides. When the average person suddenly decels while running, quickly changes the running direction, or jumps to the ground, it is possible to cause the front and rear cruciate ligaments 13, 14 or the inner and outer ligaments 15, 16 to be injured. Injury of the anterior and posterior cruciate ligaments 13, 14 can cause Anterior translation and Posterior translation. When the medial and lateral ligaments 15 and 16 are injured, they will cause varus angulation and tibia. Valgus angulation.

2 and FIG. 3, which is a first preferred embodiment of the knee ligament relaxation measuring device of the present invention, the knee ligament relaxation measuring device 200 is adapted to be mounted on a patient's thigh 11 and a The thighs 11 are connected to the lower leg 12. The knee ligament relaxation measuring device 200 of the present invention can measure four physical quantities such as anterior displacement of the tibia, posterior displacement of the tibia, varus varus, and valgus valgus, and can be used as a professional orthopedic surgeon and rehabilitation personnel. Quantitative data to assess the degree of ligament injury and recovery in patients.

As shown in FIG. 3, FIG. 4 and FIG. 5, the knee joint ligament relaxation measuring device 200 comprises a one-leg socket mechanism 2, a calf sleeve mechanism 3, and a thigh socket mechanism 2 and a calf sleeve mechanism. The first measuring mechanism 4 between 3. The thigh sleeve mechanism 2 includes a first sleeve 21 and two pressing modules 22; the first sleeve 21 has an inverted U shape and includes a front wall 211 and two protrusions respectively protruding from the left and right ends of the front wall 211 The side wall 212; the front wall 211 and the side wall 212 together define a space for the thigh 11 and a tibia 17 (ie, the kneecap, as shown in FIG. 1). Each of the pressing modules 22 is disposed on each of the side walls 212. Each of the pressing modules 22 includes a pressing member 221 and a knob 222. A pressing plate 223 of the pressing member 221 is located inside each side wall 212 for abutting the thigh. A screw 224 is formed on the outer side of the pressing plate 223. The screw 224 is screwed into a screw hole 225 of the knob 222. The knob 222 is pivoted outside the side wall 212 and is rotated. The two knobs 222 are rotated to drive the two pressing members 221 to translate left and right relative to the side wall 212, so that the pressing plates 223 of the two pressing members 221 can be closely attached to the left and right sides of the thigh 11 to avoid the first The casing 21 is shaken relative to the thighs 11.

In addition, the thigh socket mechanism 2 further includes two fastening straps 23 disposed at the rear end of the side wall 212 of the first casing 21. In this embodiment, each fastening strap 23 includes a first strap 231 coupled to a sidewall 212 and a second strap detachably coupled to the first strap 212 and detachably attached to the first strap 231. The first strip 231 is, for example, a matte strip body, and the second strip 232 is, for example, a hook strip body, and is adhered to the first strip 231 through the second strip 232, so that The casing 21 can be fastened to the thighs 11.

As shown in FIG. 3, FIG. 4 and FIG. 6, the structure of the calf sleeve mechanism 3 is similar to that of the thigh socket mechanism 2, and the calf sleeve mechanism 3 includes a second sleeve 31 and two pressing modules 32; The two sets of shells 31 are inverted U-shaped and include a front wall 311 and two side walls 312 respectively protruding from the left and right ends of the front wall 311. The front wall 311 and the side walls 312 together define a space for the calf 12 to be received. Each of the pressing modules 32 is disposed on each of the side walls 312. Each of the pressing modules 32 includes a pressing member 321 and a knob 322. A pressing plate 323 of the pressing member 321 is located inside each side wall 312 for abutting the lower leg. 12, a screw 324 protruding through a hole 313 of the side wall 312 is protruded from the outer side of the pressing plate 323. The screw 324 can be screwed into a screw hole 325 of the knob 322, and the knob 322 is pivoted outside the side walls 312. By rotating the two knobs 322, the two pressing members 321 are translated to the left and right with respect to the side wall 312, so that the pressing plates 323 of the two pressing members 321 can be closely attached to the left and right sides of the lower leg 12 to avoid The second set of shells 31 is swayed relative to the lower legs 12.

In addition, the shank splicing mechanism 3 further includes an extension frame 33 connected to a second front end surface 314 of the front wall 311. The extension frame 33 can be disposed on the second casing 31 through a screw lock or an integral molding. 33 can be accommodated in the calf 12. The shank splicing mechanism 3 further includes two fastening straps 34. One of the fastening straps 34 is disposed at the rear end of the sidewall 312 of the second sleeve 31, and includes a first strap 341 connected to a sidewall 312, and a connection. The second strip 342 is detachably attached to the other side wall 312 of the first strip 341. The other fastening strap 34 is disposed on the extension frame 33 and includes a first strap body 341 connected to the extension frame 33, and a first connector attached to the extension frame 33 and detachably fastened to the first strap body 341. The second belt 342 is, for example, a rough surface belt body, and the second belt body 342 is, for example, a hook surface belt body. The second strap 342 of each of the fastening strips 34 is adhered to the first strap 341 such that the second sleeve 31 can be fastened to the lower leg 12.

As shown in FIG. 3, FIG. 4 and FIG. 7, the first measuring mechanism 4 is configured to measure the displacement amount of the tibia 121 (shown in FIG. 1) after being applied by a force in a forward or backward direction, and the first measuring mechanism 4 includes a carrier frame 41 and a telescopic link module 42. The carrier frame 41 is disposed on a first front end surface 214 of the front wall 211 of the first casing 21 by a pivotal connection. The carrier frame 41 includes an L-shaped frame body 411 and a first portion disposed on the frame body 411. A shaft 412 has a first shaft 412 extending in the left-right direction. One end of the telescopic link module 42 is pivotally connected to the carrying frame 41 and rotatably rotates around the first shaft 412, and the other opposite end is connected with the calf sleeve mechanism 3; the telescopic link module 42 includes a first slide The connector 421 and a second sliding member 422 slidably slidably coupled to the first sliding member 421. The first sliding member 421 includes a pivoting frame 423 extending in the up and down direction. An upper pivoting end 424 of the pivoting frame 423 is pivotally connected to the first shaft 412 of the carrying frame 41 and rotatable about the first shaft 412. The first sliding member 421 further includes two sliding rails 425 fixedly disposed on the pivoting frame 423. The second sliding member 422 includes a sliding frame 426, and two fixedly disposed on the sliding frame 426. The slider 427 defines a sliding slot 428 for sliding the sliding rails 425, so that the second sliding member 422 can slide up and down relative to the first sliding member 421. The telescopic link module 42 further includes an engaging member 429. The engaging member 429 is pivotally disposed on the second front end surface 314 of the front wall 311 of the second casing 31. The engaging member 429 includes a left-right direction and The second shaft 430 of the first shaft 412 is parallel, and the lower pivot end 431 of the carriage 426 of the second sliding member 422 is pivotally connected to the second shaft 430 and rotatable about the second shaft 430.

The frame 411 further includes a bushing 413 defining a through hole 414 extending in the front-rear direction. The first measuring mechanism 4 further includes a front and rear force applying member 44. The front and rear force applying members 44 are movably disposed through the through holes 414 of the carrying frame 41 and engaged with the telescopic link module 42. In the present embodiment, the forward and backward biasing members 44 include a pin portion 441 and a biasing portion 442 opposite to the pin portion 441. The pin portion 441 can be disposed through the sliding frame 426 of the second sliding member 422. The elongated slot 432 is configured such that the pin portion 441 is restrained by the elongated slot 432. In other words, the pin portion 441 is slidably pivotally coupled to the elongated slot 432 so that relative sliding and relative can be simultaneously generated therebetween. Rotation (the direction of relative sliding is perpendicular to the first axis 412, and the direction of relative rotation is parallel to the first axis 412); the urging portion 442 is T-shaped for the user to press. When the user presses the urging portion 442 to slide the front and rear urging member 44 up and down along the through hole 414, the front and rear urging member 44 can simultaneously drive the telescopic link module 42 about the first shaft 412 relative to the bearing. The frame 411 of the frame 41 is rotated.

The first measuring mechanism 4 further includes a first force sensing element 45 disposed between the two partitions 443 of the front and rear force applying members 44 for sensing the application to the front and rear applications. The force on the urging portion 442 of the force member 44. In this embodiment, the first force sensing component 45 is a load cell, which is the same as the structure and operation principle of the load cell currently on the market, and therefore will not be described in detail herein. The first measuring mechanism 4 further includes a first displacement sensing component 46 disposed on the carrier frame 41 and abutting the telescopic link module 42 for sensing the displacement amount of the telescopic link module 42. In this embodiment, the first displacement sensing component 46 is a resistive displacement sensor, and includes a body 461 fixedly disposed on the frame 411 of the carrier frame 41, and is disposed in the body 461. The probe 462 can be abutted on the pivoting frame 423 of the first sliding member 421, and the first sliding member 421 of the telescopic connecting rod module 42 is opposite. When the carrier frame 41 rotates, the probe 462 is stretched back and forth with respect to the body 461 as the first sliding member 421 rotates.

As shown in FIG. 3, FIG. 5, FIG. 6, and FIG. 7, in the embodiment, the calf sleeve mechanism 3 further includes a first bearing member 35 disposed on the second front end surface 314, and the first bearing member 35 is used. The second pivoting shaft 433 of the engaging member 429 perpendicular to the second shaft 430 is pivotally connected; the first bearing member 35 defines a first rotation center L1 extending in the front-rear direction, and the calf sleeve mechanism 3 is transparent to the first The bearing member 35 rotates relative to the engagement member 429 of the telescopic link module 42. When the patient turns the lower leg 12 inward or outward with respect to the thigh 11 due to the injury factor, the calf socket mechanism 3 can be appropriately rotated relative to the telescopic link module 42 so that the calf sleeve mechanism 3 can be surely nested. On the calf 12. The thigh socket mechanism 2 further includes a second bearing member 24 disposed on the first front end surface 214, and the second bearing member 24 is disposed on the frame body 411 and perpendicular to the first shaft 412. The first pivoting shaft 415 is pivotally connected; the second bearing member 24 defines a second rotation center L2 extending in the front-rear direction, and the thigh socketing mechanism 2 is permeable to the bearing frame of the second bearing member 24 relative to the telescopic link module 42. 41 rotation. When the patient's lower leg 12 is turned inward or outward with respect to the thigh 11 , the calf socket mechanism 3 and the thigh socket mechanism 2 can be simultaneously rotated relative to the telescopic link module 42 to make the calf sleeve mechanism 3 and the thigh socket mechanism 2 can be surely sleeved on the calf 12 and the thigh 11 respectively.

As shown in Fig. 8, Fig. 9, Fig. 10 and Fig. 11, the knee ligament relaxation measurement method will be described in detail below. The thigh socket mechanism 2 and the calf sleeve mechanism 3 of the knee ligament relaxation measuring device 200 are respectively sleeved on the thigh 11 and the lower leg 12, and the thigh 11 and the calf 12 are respectively supported by a support pad (not shown). Therefore, the thigh 11 and the lower leg 12 are bent at a degree of 25 to 30 degrees, and then, the professional orthopedist and the rehabilitation personnel can perform the measurement by manual means.

8 is a flow chart of a method for measuring the forward or backward displacement of the tibia 121 (shown in FIG. 1). The main flow is as follows: applying a forward or backward force to a forward and backward force bar as shown in step 91. On the member 44, a telescopic link module 42 connected to the front and rear force applying members 44 drives a set of the calf sleeve mechanism 3 attached to the lower leg 12.

First, the operator holds a first grip 47 disposed on the carrying frame 41 with one hand while holding the urging portion 442 of the front and rear urging member 44 with the other hand, and then the operator can apply an edge The forward pulling force indicated by the arrow I direction is applied to the urging portion 442 (as shown in FIG. 10), and the pin portion 441 of the front and rear urging member 44 pulls the second sliding member 422 forward to make the second sliding The member 422 and the first sliding member 421 rotate around the first shaft 412 in the direction of the arrow II, and at the same time, through the engagement of the engaging member 429 and the rotating member 429 is rotatable relative to the second sliding member 422, the shank splicing mechanism 3 can drive the lower leg 12 to translate forward relative to the thigh 11 to thereby measure the forward displacement of the tibia 121.

Alternatively, the operator can apply a rearward thrust shown in the direction of arrow III to the urging portion 442 (as shown in FIG. 11), and the pin portion 441 of the front and rear urging member 44 pushes the second sliding member 422. Shifting, the second sliding member 422 and the first sliding member 421 are rotated around the first axis 412 in the direction of the arrow IV, while being driven by the engaging member 429 and the engaging member 429 is rotatable relative to the second sliding member 422. The relationship enables the calf splicing mechanism 3 to drive the lower leg 12 to translate rearward relative to the thigh 11, thereby performing a measurement of the posterior displacement of the tibia 121.

As shown in step 92, the force applied to the forward and backward force applying members 44 is sensed and a force sensing signal is generated, and the amount of displacement of the telescopic link module 42 is sensed and a displacement sensing signal is generated.

Since the force applied to the urging force applying member 44 causes the first force sensing element 45 to correspondingly generate a force sensing signal, the force applied to the urging force applying member 44 is different. A force sensing element 45 will correspondingly generate different force sensing signals. In addition, since the displacement sensing signal is generated during the telescopic movement of the probe 462 of the first displacement sensing element 46 relative to the body 461, the first displacement sensing element is different depending on the amount of expansion and contraction of the probe 462. 46 will correspondingly generate different displacement sensing signals. In this embodiment, the power sensing signal and the displacement sensing signal are all exemplified by analog voltage signals.

As shown in step 93, a computer 6 (shown in FIG. 2) is used to extract the power sensing signal and the displacement sensing signal for comparison.

In this embodiment, the first power sensing component 45 and the first displacement sensing component 46 are respectively electrically connected to a multi-channel switch box 61 of the computer 6 through a wire (not shown), and the multi-channel adapter box 61 is electrically connected to an analog signal capture card (not shown) of a host computer 63 through a wire 62. The analog signal capture card can capture the power sensing signal generated by the first force sensing component 45. And the displacement sensing signal generated by the first displacement sensing component 46 converts the power sensing signal and the displacement sensing signal into a power value and a displacement value respectively through the host computer 63, thereby performing calculation and correlation analysis ratio For work.

As shown in FIG. 12, a displacement reference point of the tibia 121 (shown in FIG. 1) (usually located 3 cm below the tibia 17) may differ from the position of the probe 462 of the first displacement sensing element 46, Therefore, the computer mainframe 63 of the computer 6 (shown in FIG. 2) can be scaled by a similar triangular geometric relationship to obtain the actual displacement amount Δ of the displacement reference point, wherein the actual displacement of the displacement reference point The amount Δ is related to a displacement conversion formula, which is:

Where l is the amount of deviation of the displacement reference point from the axis of the first axis 412, and l ₀ is the deviation of the central axis of a probe 462 of the first displacement sensing element 46 from the axis of the first axis 412 The amount, Δ ₀ is the linear displacement of the probe 462 (as in the case of FIG. 12 , the linear displacement amount when the first sliding member 421 of the telescopic link module 42 is horizontal is set to zero), and e is the telescopic link module. The amount of deviation between the plane of the contact point of the first sliding member 421 of the group 42 and the probe 462 of the first displacement sensing element 46 and the axis of the first shaft 412, Δ* is when the telescopic link module 42 swings The amount of displacement produced along the central axis of the probe 462 of the first displacement sensing element 46.

When the actual measurement is performed, the actual displacement amount Δ _i of the displacement reference point shown in FIG. 9 is measured first, and then the actual displacement amount Δ _f of the displacement reference point shown in FIG. 10 or FIG. 11 is measured, and Δ is calculated. The difference between _i and Δ _{f results} in a forward displacement or a backward displacement of the tibia 121. As shown in FIG. 13, when the computer host 63 calculates the distance of the forward displacement or the backward displacement of the tibia 121, it can be compared with the force value after the power sensing signal is converted to obtain a relationship between displacement and force. In this way, professional orthopedic surgeons and rehabilitation personnel can be used to diagnose the condition and give the patient the best and immediate medical treatment.

As shown in FIG. 5 and FIG. 6 , the shank shank mechanism 3 further includes two pivot seats 36 . Each pivot seat 36 can be fixed to a second side 315 of each side wall 312 by a screw lock manner. A third shaft 37 extending in the front-rear direction is provided, wherein the first rotation center L1 defined by the first bearing member 35 and the third shaft 37 are coplanar and parallel to each other. The shank splicing mechanism 3 further includes a right and left urging lever member 38 disposed on the extension frame 33. The left and right urging member 38 includes a connecting portion 381 connected to the extension frame 33, and the opposite portion 381 is located at the connecting portion 381. The end of the force applying portion 382.

As shown in FIG. 2, FIG. 3, FIG. 4 and FIG. 14, the knee ligament relaxation measuring device 200 further includes a second measuring mechanism 5, and the second measuring mechanism 5 includes two side telescopic link modules 51. . Each of the side telescopic link modules 51 includes a first connecting unit 511 disposed on a first side 215 of each side wall 212 of the thigh socket mechanism 2, and a second portion 312 disposed on each side wall 312 of the calf splicing mechanism 3. A side surface 315 and a second connecting unit 512 rotatably rotatable about the third shaft 37. The first connecting unit 511 includes a first connecting member 513 pivotally connected to the first side 215, and two sleeves 514 respectively disposed on the first connecting member 513. The second connecting unit 512 includes a second pivoting unit 512. The second connecting member 515 of the side surface 315 and the guiding rod 516 respectively disposed on the second connecting member 515 are slidably disposed in the sleeves 514.

As shown in FIG. 4 , FIG. 5 , FIG. 6 and FIG. 14 , the thigh sleeve mechanism 2 further includes two pivot seats 25 , and each pivot seat 25 can be fixed to each of the side walls 212 by a screw lock. On the side 215, each of the pivot seats 25 is provided for a fourth shaft 26 extending in the front-rear direction, wherein the first center of rotation L2 defined by the second bearing member 24 and the fourth shaft 26 are coplanar and parallel to each other. The first connecting unit 511 further includes a first hinge member 517 pivotally connected to the fourth shaft 26 and rotatably rotating around the fourth shaft 26, the first hinge member 517 includes a first pivotal connection for the first connecting member 513 The pivoting shaft portion 518 extends in the left-right direction, whereby the first connecting member 513 is rotatable around the fourth shaft 26 through the first hinge member 517 and is rotatable around the first pivoting shaft portion 518. Rotating relative to the first hinge member 517. The second connecting unit 512 further includes a second hinge member 519 pivotally connected to the third shaft 37 and rotatably rotating around the third shaft 37. The second hinge member 519 includes a second hinge member 515 for pivoting. The pivoting shaft portion 520 and the second pivoting shaft portion 520 extend in the left-right direction, whereby the second connecting member 515 is rotatable around the third shaft 37 through the second hinge member 519 and is rotatable around the second pivoting shaft portion 520. Rotating relative to the second hinge member 519.

In addition, the second measuring mechanism 5 further includes a second force sensing component 53 and a second displacement sensing component 54. The second power sensing component 53 has the same structure as the first power sensing component 45, and the second power sense The measuring member 53 is disposed on the connecting portion 381 of the right and left biasing lever members 38 for sensing the force applied to the right and left biasing lever members 38. The second displacement sensing element 54 is identical in structure to the first displacement sensing element 46. The second displacement sensing element 54 is mounted on the second connector 515 via a mounting plate 50. The second displacement sensing element 54 includes a fixed The main body 541 of the fixing plate 50 and a probe 542 abutting against the second side surface 315 of the calf socket mechanism 3 and extending in the left-right direction, the probe 542 can be connected with the calf sleeve mechanism 3 relative to the second connecting member 515 The rotation is expanded and contracted, whereby the amount of turnover of the calf socket mechanism 3 can be sensed.

In addition, in order to simultaneously sense the displacement amount of the thigh socket mechanism 2 relative to the first connecting member 513, the second measuring mechanism 5 further includes a third displacement sensing element 55, and the third displacement sensing element 55 is configured and The first displacement sensing element 46 is identical. The third displacement sensing element 55 is mounted on the first connecting member 513 through a fixing plate 50. The third displacement sensing element 55 includes a body 551 fixed on the fixing plate 50, and a probe 552 abutting on the first side surface 215 of the thigh socket mechanism 2 and extending in the left-right direction, the probe 552 can be expanded and contracted with the rotation of the thigh socket mechanism 2 relative to the first connecting member 513, thereby being able to sense The amount of turnover of the thigh socket mechanism 2 is measured.

As shown in Fig. 15, Fig. 16, Fig. 17, and Fig. 18, the knee ligament relaxation measurement method will be described in detail below. 15 is a flow chart of a method for measuring the outward or inward inversion of the tibia 121 (shown in FIG. 1). The main flow is as follows: step 94, applying a leftward or rightward force to a left and right force applying rod On the piece 38, a set of the calf sleeve mechanism 3 attached to the left leg 12 is connected to the left and right force applying members 38.

First, the operator holds a second grip 27 disposed on the first front end surface 214 of the first casing 21 with one hand, and the urging portion 382 of the left and right urging member 38 is held by the other hand. Then, the operator can apply an outward thrust force shown in the direction of the arrow V to the urging portion 382 (as shown in FIG. 17), and the right and left urging member 38 pushes the second casing 31 in the direction of the arrow VI. The first sleeve 21 is rotated such that the second sleeve 31 can drive the lower leg 12 to rotate outward relative to the thigh 11, thereby measuring the outward rotation of the tibia 121.

Alternatively, the operator can apply an inward pulling force on the urging portion 382 as shown in the direction of arrow VII (as shown in FIG. 18), and the left and right urging members 38 pull the second casing 31 in the direction of the arrow X. The first set of shells 21 is rotated such that the second set of shells 31 can drive the lower legs 12 to rotate inwardly relative to the thighs 11, thereby allowing measurement of the inward turning of the tibia 121.

As shown in step 95, the force applied to the left and right force applying members 38 is sensed and a force sensing signal is generated, and the amount of inversion of the calf socket mechanism 3 is sensed and a displacement sensing signal is generated.

Since the force applied to the right and left urging members 38 causes the second force sensing element 53 to correspondingly generate a force sensing signal, the force applied to the right and left urging members 38 is different, The two force sensing elements 53 will correspondingly generate different force sensing signals. In addition, since the probe 542 of the second displacement sensing element 54 is stretched relative to the body 541, a displacement sensing signal is generated. Therefore, as the amount of expansion and contraction of the probe 542 is different, the second displacement sensing element 54 Correspondingly, different displacement sensing signals are generated. In this embodiment, the power sensing signal and the displacement sensing signal are all exemplified by analog voltage signals. In particular, since the calf socket mechanism 3 may simultaneously generate translation during the rotation process, the displacement generated by the translation of the calf sleeve mechanism 3 can be sensed through the arrangement of the third displacement sensing element 55. the amount. Furthermore, if the lower leg 12 is excessively bent relative to the thigh 11 due to the injury factor (as shown in FIG. 19), the design of the second and third displacement sensing members 54, 55 can accurately measure the tibia 121. The amount of flipping when turning outwards or inwards.

As shown in step 96, a computer 6 (shown in FIG. 2) is used to extract the power sensing signal and the displacement sensing signal for comparison.

In this embodiment, the second power sensing component 53 and the second and third displacement sensing components 54 and 55 are respectively electrically connected to the multi-channel adapter box 61 of the computer 6 through a wire (not shown), and the computer host The analog signal capture signal of 63 can capture the power sensing signal generated by the second force sensing component 53 and the displacement sensing signal generated by the second and third displacement sensing components 54, 55 through the computer host 63. The power sensing signal and the displacement sensing signal are respectively converted into a power value and a displacement value, thereby performing calculation and correlation analysis work.

As shown in FIG. 19, FIG. 20 and FIG. 21, the computer main body 63 can further calculate the tibia 121 to the left by the displacement sensing signals of the second and third displacement sensing elements 54, 55 captured by the host computer 63. Or the flip angle rotated to the right, the flip angle of the tibia 121 to the left or right is related to an angle conversion formula, which is:

As shown in FIG. 19 and FIG. 20, β is a flip angle, and α ₁ is an angle between the side telescopic link module 51 of the second measuring mechanism 5 and the second side surface 315 of the calf sleeve mechanism 3, and Δ ₁ is The linear displacement amount of the probe 542 of the second displacement sensing element 54 is Y ₁ being the flushing end and the third axis 37 of the protruding end of the probe 542 of the second connecting member 515 and the second displacement sensing element 54. The vertical distance between them, L ₁ is the vertical distance between the central axis of the probe 542 of the second displacement sensing element 54 and the third axis 37, and H ₁ is the second side 315 and the third of the calf socket mechanism 3 the vertical distance between the axes 37, S ₁ is a lower leg socket means and the second side 3 of the contact end 315 in contact with the vertical distance between a ₁ H second displacement sensing probe 542 of the sensing element 54; FIG. 21, α ₂ is the angle between the side telescopic link module 51 of the second measuring mechanism 5 and the first side surface 215 of the thigh socket mechanism 2, and Δ ₂ is the probe 552 of the third displacement sensing element 55. the amount of linear displacement, Y ₂ is a first connecting member 513 and the third probe displacement sensing element 55255 is a protruding end flush with the end of the vertical distance between the fourth shaft 26, L ₂ The third displacement sensing element 552 of the central axis of the probe 26 and the vertical distance between the fourth shaft 55, H ₂ is a side legs of the first socket means of the vertical distance between 2 215 and the fourth shaft 26, S ₂ is the vertical distance between the contact end of the probe 552 of the third displacement sensing element 55 and the first side 215 of the thigh socket mechanism 2 and H ₂ .

When performing the actual measurement, first measure the initial flip angle β _i as shown in FIG. 16 , and then measure the actual flip angle β _f as shown in FIG. 17 , FIG. 18 or FIG. 19 , and calculate β _i and β _f . Poor can get the flip angle of the tibia 121 eversion or the flip angle of the varus, so that professional orthopedic surgeons and rehabilitation personnel can diagnose the condition and give the patient the best and immediate medical treatment.

As shown in FIG. 22 and FIG. 23, it is a second preferred embodiment of the knee ligament relaxation measuring device of the present invention. The overall structure and operation mode of the knee ligament relaxation measuring device 210 are substantially the first and preferred. The embodiment is the same except that the thigh socket mechanism 2', the calf socket mechanism 3', and the first measuring mechanism 4' have slightly different structural designs.

As shown in FIG. 23 and FIG. 24, in the present embodiment, the number of the side walls 212 and the pressing module 22 of the thigh socket mechanism 2' is one, and the second belt 232 of each fastening belt 23 is connected to the front. The wall 211 can be attached to the first belt 231. The number of the side walls 312 of the calf splicing mechanism 3' and the pressing module 32 are each one, and the second strip 342 of a fastening strip 34 is coupled to the front wall 311 and can be affixed to the first strip 341. In addition, the connecting portion 381 of the left and right urging rods 38 is disposed on the side of the extension frame 33, and the first belt 341 of the other fastening belt 34 is coupled to the connecting portion 381 and can be affixed to the second belt 342. . Through the design of the single side wall 212 of the thigh socket mechanism 2' and the pressing module 22, the single side wall 312 of the calf splicing mechanism 3' and the pressing module 32, and the design of the single second measuring mechanism 5 The knee ligament relaxation measuring device 210 can reduce the overall weight as compared with the first preferred embodiment to reduce the burden on the patient's thigh 11 and lower leg 12.

As shown in FIG. 24 and FIG. 25, the carrying frame 41' of the first measuring mechanism 4' includes an L-shaped frame 411', and a first engaging member 416; the front and rear biasing members 44 and the first The displacement sensing element 46 is disposed on the frame 411' of the carrier frame 41'. The first engaging member 416 is coupled between the frame body 411' and the first front end surface 214 of the thigh socket mechanism 2'. The first engaging member 416 includes a first shaft 417 extending in the left-right direction, and a first shaft The first pivot shaft 418 is vertically and pivotally connected to the second bearing member 24, and the frame body 411' is rotatably pivotally connected to the first shaft 417. One end of the urging force applying member 44 is coupled to the second front end surface 314 of the calf splicing mechanism 3 ′, and the front and rear urging rod member 44 includes a rod body 440 and a second engaging member 444 ; the second engaging member 444 The second shaft 445 extending in the left-right direction and the second pivot shaft 446 perpendicular to the second shaft 445 and pivotally connected to the first bearing member 35, the rod body 440 passing through the pivoting portion 441 of one end thereof 'Rotatingly pivoted to the second shaft 445. The frame body 411 ′ is rotatably pivoted to the first shaft 417 , so that the frame body 411 ′ can be rotated to an oblique angle with respect to the first joint member 416 , whereby the front and rear force applying members 44 can be along the first and the second The vertical direction of application of the front end face 314 applies a force to the calf sleeve mechanism 3'.

In addition, the first displacement sensing component 46 is disposed on the frame 411 ′ of the carrier frame 41 ′, and the transmission frame 411 ′ is rotatable relative to the first engagement component 416 to an oblique angle, so that the first displacement sensing component 46 A contact plate 463 disposed at one end of the probe 462 can abut the lower leg 12 and correspond to a nodule 122 (shown in FIG. 27) of the radial bone 121, whereby the first displacement sensing element 46 can sense The amount of displacement of the nodule 122 of the tibia 121.

26, FIG. 27, FIG. 28, FIG. 29 and FIG. 30, FIG. 26 is a flow chart of a method for measuring the forward or backward displacement of the tibia 121 (shown in FIG. 1). The main flow is as follows: As shown at 91', a forward or backward force is applied to a forward and backward force applying member 44 to move a calf sleeve mechanism 3' that is coupled to the front and rear force applying members 44 and that is sleeved to the lower leg 12.

The operator holds the second grip 27 provided on the first front end face 214 of the thigh socket mechanism 2' with one hand while holding the urging portion 442 of the front and rear urging member 44 with the other hand, and then, The operator can apply a forward pulling force as shown in the direction of the arrow A1 (perpendicular to the second front end face 314) to the urging portion 442 (as shown in FIG. 29), and the front and rear urging member 44 will pass through the second engagement. The piece 444 pulls the calf socket mechanism 3' forward to translate, whereby the first displacement sensing element 46 can measure the forward displacement of the tibia 121.

Alternatively, the operator can apply a rearward thrust shown in the direction of arrow A2 to the force applying portion 442 (as shown in FIG. 30), and the front and rear force applying members 44 can pass through the second engaging member 444 to push the calf socket mechanism. 3' is translated backward, whereby the first displacement sensing element 46 allows measurement of the posterior displacement of the tibia 121.

As shown in step 92', the force applied to the urging force member 44 is sensed and a force sensing signal is generated, and the amount of displacement of a nodule 122 of the tibia 121 is sensed and a displacement sensing signal is generated.

As shown in step 93', a computer 6 (shown in Figure 2) is used to extract the power sensing signal and the displacement sensing signal for comparison.

In summary, the knee ligament relaxation measuring devices 200 and 210 of the two embodiments are configured to measure the forward displacement of the tibia 121 and the posterior displacement of the tibia 121 by the design of the first measuring mechanism 4, 4'. The degree of injury of the anterior and posterior cruciate ligaments 13, 14 is known; by the design of the second measuring mechanism 5, the amount of inversion of the tibia 121 and the amount of valgus 121 valgus are measured by energy to know the inner and outer ligaments 15, 16 The degree of injury; whereby professional orthopedic surgeons and rehabilitation personnel can diagnose the condition and give the patient the best and immediate medical treatment, so it can achieve the purpose of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

11. . . thigh

111. . . Femur

12. . . Calf

121. . . Humerus

13. . . Anterior ligament

14. . . Posterior ligament

15. . . Medial ligament

16. . . Lateral ligament

17. . . patella

200, 210. . . Knee ligament relaxation measuring device

2, 2’. . . Thigh socket mechanism

twenty one. . . First set of shells

211, 311. . . Front wall

212, 312. . . Side wall

213, 313. . . perforation

214. . . First front end face

215. . . First side

22, 32. . . Tightening module

221, 321. . . Tightening piece

222, 322. . . Knob

223, 323. . . Tight plate

224, 324. . . Screw

225, 325. . . Screw hole

23, 34. . . Fastening belt

231, 341. . . First belt

232, 342. . . Second belt

twenty four. . . Second bearing

25, 36. . . Pivot seat

26. . . Fourth axis

27. . . Second grip

3, 3. . . Calf splicing mechanism

31. . . Second set of shells

314. . . Second front face

315. . . Second side

33. . . Extension frame

35. . . First bearing

37. . . Third axis

38. . . Left and right force applying rod

381. . . Connection

382. . . Force department

4, 4’. . . First measuring mechanism

41, 41’. . . Bearer frame

411, 411’. . . Frame

412, 417. . . First axis

413. . . bushing

414. . . perforation

415, 418. . . First pivot axis

416. . . First joint

42. . . Telescopic link module

421. . . First sliding piece

422. . . Second sliding member

423. . . Pivot frame

424. . . Upper pivot end

425. . . Slide rail

426. . . Sliding frame

427. . . Slider

428. . . Chute

429. . . Joint piece

430, 445. . . Second axis

431. . . Lower pivot end

432. . . Long chute

433, 446. . . Second pivot axis

44. . . Front and rear force applying members

440. . . Rod body

441. . . Sales department

441’. . . Pivot

442. . . Force department

443. . . Partition

444. . . Second joint

45. . . First force sensing element

46. . . First displacement sensing element

461. . . Ontology

462. . . Probe

463. . . Contact plate

47. . . First grip

5. . . Second measuring mechanism

50. . . Fixed plate

51. . . Side telescopic link module

511. . . First connection unit

512. . . Second connection unit

513. . . First connector

514. . . Sleeve

515. . . Second connector

516. . . Guide rod

517. . . First hinge

518. . . First pivoting shaft

519. . . Second hinge

520. . . Second pivoting shaft

53. . . Second force sensing element

54. . . Second displacement sensing element

541. . . Ontology

542. . . Probe

55. . . Third displacement sensing element

551‧‧‧ Ontology

552‧‧‧Probe

6‧‧‧ computer

61‧‧‧Multi-channel transfer box

62‧‧‧ wire

63‧‧‧ computer body

91~96‧‧‧Steps

91’~93’‧‧‧ steps

Figure 1 is a schematic view of a general human leg;

Figure 2 is a perspective view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 3 is a perspective view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 4 is an exploded perspective view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 5 is an exploded perspective view of the thigh socket mechanism of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 6 is an exploded perspective view showing the calf splicing mechanism of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 7 is an exploded perspective view of the first measuring mechanism of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 8 is a flow chart showing the measurement method of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 9 is a side elevational view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 10 is a side elevational view of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention, illustrating the forward and outward force applying member to pull the calf sleeve mechanism forward;

Figure 11 is a side elevational view of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention, illustrating the forward and backward force applying members pushing the calf sleeve mechanism backward;

Figure 12 is a partial enlarged view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 13 is a graph showing the relationship between the force and the displacement of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 14 is an exploded perspective view showing the second measuring mechanism of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 15 is a flow chart showing the measurement method of the first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 16 is a plan view showing a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 17 is a plan view showing a first preferred embodiment of the knee ligament relaxation measuring device of the present invention, illustrating that the left and right urging members push the second casing outward;

Figure 18 is a plan view showing a first preferred embodiment of the knee ligament relaxation measuring device of the present invention, illustrating that the left and right urging members pull the second casing inward;

Figure 19 is a plan view showing a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 20 is a partial enlarged view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 21 is a partial enlarged view of a first preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 22 is a perspective view of a second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 23 is a perspective view of a second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 24 is an exploded perspective view showing a second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 25 is an exploded perspective view showing the first measuring mechanism of the second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 26 is a flow chart showing a measurement method of a second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 27 is a side elevational view of a second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 28 is a partial cross-sectional view showing a second preferred embodiment of the knee ligament relaxation measuring device of the present invention;

Figure 29 is a side elevational view of a second preferred embodiment of the knee ligament relaxation measuring device of the present invention, illustrating the forward and outward biasing members for pulling the calf sleeve mechanism forward;

Figure 30 is a side elevational view of a second preferred embodiment of the knee ligament relaxation measuring device of the present invention, illustrating the forward and backward force applying members pushing the calf socket mechanism back.

11‧‧‧Thighs

5‧‧‧Second measuring mechanism

12‧‧‧ calf

51‧‧‧ Side telescopic link module

200‧‧‧ Knee ligament relaxation measuring device

6‧‧‧ computer

61‧‧‧Multi-channel transfer box

2‧‧‧Thigh socket mechanism

62‧‧‧ wire

3‧‧‧Knee socket mechanism

63‧‧‧ computer body

4‧‧‧First measuring mechanism

Claims (22)

A knee joint ligament relaxation measuring device is adapted to be mounted on a thigh and a calf connected to the thigh, the knee joint ligament relaxation measuring device comprising: a thigh socket mechanism, sleeved on the thigh And including a first front end surface, and a first side surface connected to the first front end surface; a calf sleeve mechanism, sleeved on the lower leg and including a second front end surface, and a second front end surface a second side of the connection; a first measuring mechanism connected between the first front end surface and the second front end surface for measuring a displacement of a tibia of the lower leg by a force applied in a forward or backward direction And a second measuring mechanism connected between the first side surface and the second side surface for measuring an amount of inversion of the tibia after being applied by a force in a leftward or rightward direction; wherein the first The measuring mechanism comprises a carrying frame disposed on the first front end surface, a telescopic link module, and a front and rear force applying bar member, the carrying frame comprising a first axis extending in a left-right direction, the telescopic link The module extends obliquely and can be turned at one end The ground is pivotally connected to the first shaft, and the other opposite end is connected to the second front end surface. The front and rear force applying rods are movably disposed on the carrying frame and pivotally connected to the telescopic link module. The urging rod member can drive the telescopic link module to rotate relative to the carrier frame around the first shaft; the carrier frame includes a through hole extending in the front-rear direction and for the front and rear force applying rods, the first A measuring mechanism also includes a first force a sensing element, and a first displacement sensing element, the first force sensing element is disposed on the front and rear force applying rods for sensing a force applied to the forward and backward force applying rods, the first The displacement sensing component is disposed on the bearing frame and abuts the telescopic link module for sensing the displacement of the telescopic link module; the telescopic link module further includes a first sliding component. And a second sliding member slidably coupled to the first sliding member, the first sliding member includes an upper pivoting end pivotally connected to the carrying frame, the second sliding member can slide up and down The ground is slidably coupled to the first sliding member, and one end of the front and rear force applying rods is slidably pivotally connected to the second sliding member. The knee ligament relaxation measuring device according to the first aspect of the invention, wherein the first displacement sensing element comprises a probe abutting on the first sliding member and extending in a front-rear direction, The probe can be extended and contracted forward and backward as the first sliding member rotates. The knee ligament relaxation measuring device according to claim 2, wherein the telescopic link module further comprises a joint member connected to the second front end surface, the joint member including a first portion A second shaft parallel to the shaft, the second sliding member includes a lower pivoting end rotatably pivoted to the engaging member and rotatable about the second shaft. The knee ligament relaxation measuring device according to claim 3, wherein the calf splicing mechanism comprises a third shaft extending in a front-rear direction, and a left and right urging member for applying a force The second measuring mechanism includes a first connecting unit, a second connecting unit, a second force sensing component and a second displacement sensing component, and the first connecting component is configured Positioned on the first side and including a sleeve, the second connecting unit is pivotally connected to the second side and rotatably rotates around the third shaft, and the second connecting unit comprises a slidably disposed through the sleeve a guiding rod in the cylinder, the second force sensing element is disposed on the left and right urging rod member for sensing a force applied to the left and right urging rod member, wherein the second displacement sensing element is disposed at the The second connecting unit is in contact with the calf sleeve mechanism for sensing the amount of inversion of the calf socket mechanism. The knee ligament relaxation measuring device according to the fourth aspect of the invention, wherein the shank slinging mechanism further comprises a first bearing member disposed on the second front end surface and pivotally connected to the engaging member, The first bearing member defines a first center of rotation that is coplanar and parallel to the third axis. The knee ligament relaxation measuring device according to the fifth aspect of the invention, wherein the thigh socket mechanism comprises a fourth shaft extending in a front-rear direction, the first connecting unit being pivotally connected to the first side and Rotatable about the fourth axis, the second measuring mechanism further includes a third displacement sensing element disposed on the first connecting unit for sensing the amount of inversion of the thigh socket mechanism. The knee ligament relaxation measuring device according to claim 6, wherein the thigh socket mechanism further includes a second bearing member disposed on the first front end surface and pivotally connected to the carrier frame, The second bearing member defines a second center of rotation that is coplanar and parallel to the fourth axis. Knee ligament relaxation measurement according to item 7 of the patent application scope The device, wherein the first connecting unit further comprises a first connecting member disposed on the sleeve, and a first hinge member pivotally connected to the fourth shaft and rotatably rotating around the fourth shaft, The first hinge member includes a first pivoting shaft portion for pivoting the first connecting member, the first pivoting shaft portion extends in a left-right direction, and the second connecting unit further includes a first portion disposed on the guiding rod a second connecting member, and a second hinge member pivotally connected to the third shaft and rotatably rotating around the third shaft, the second hinge member including a second pivoting shaft pivotally connected to the second connecting member The second pivotal shaft portion extends in the left-right direction. The knee ligament relaxation measuring device according to the eighth aspect of the invention, wherein the second displacement sensing element comprises a probe abutting the second side and extending in a left-right direction, the second displacement The probe of the sensing component is expandable and contractible with the rotation of the calf socket mechanism, and the third displacement sensing component includes a probe abutting the first side and extending in the left-right direction, and the third displacement sensing component The probe can be expanded and contracted as the thigh socket mechanism rotates. The knee ligament relaxation measuring device according to claim 9, wherein the first and second force sensing elements respectively generate a force sensing signal, the first, second, and third displacements The sensing elements respectively generate a displacement sensing signal, the knee ligament relaxation measuring device further comprising a first and second force sensing elements and the first, second and third displacement sensing elements A computer that is connected to the computer, and the computer can capture the power sensing signal and the displacement sensing signal for analysis and comparison. The knee ligament relaxation measuring device according to claim 10, wherein the displacement of the displacement reference point forward or backward of the tibia is related to a displacement conversion formula, and the displacement conversion formula is: l is a displacement amount of the displacement reference point and the axis of the first axis, and l _{0 is} a deviation amount of a central axis of the probe of the first displacement sensing element and an axis of the first axis, Δ ₀ For the linear displacement of the probe, e is the amount of deviation between the plane of the contact point of the first sliding member and the probe of the first displacement sensing element and the axis of the first axis, Δ* is the The amount of displacement generated along the central axis of the probe of the first displacement sensing element when the first slider swings. The knee ligament relaxation measuring device according to claim 10, wherein the second measuring mechanism measures the turning angle of the tibia to the left or right, the tibia is left or right The flip angle is related to an angle conversion formula, which is: β is the angle of inversion, α _{1 is} the angle between the second measuring mechanism and the second side of the calf socket mechanism, and Δ _{1 is} the linear displacement of the probe of the second displacement sensing element, and Y _{1 is} the first a vertical distance between a flat end of the protruding end of the probe of the second displacement sensing element and the third axis, and L ₁ is a central axis of the probe of the second displacement sensing element a vertical distance from the third axis, H ₁ is the vertical distance between the second side of the calf socket mechanism and the third axis, and S ₁ is a sum of the probes of the second displacement sensing element the vertical distance _between the second side of the contact end of the leg in contact with the socket means H; α ₂ angle for a second side surface of the first measuring means to the thigh socket mechanism, △ ₂ for the first The linear displacement amount of the probe of the three displacement sensing element, Y ₂ is the vertical between the end of the first connector and the convex end of the probe of the third displacement sensing element and the fourth axis distance, L ₂ that the central axis of the third probe displacement sensing element and the vertical distance between the fourth shaft, H ₂ for the thighs Means connected to the first side of the vertical distance between the fourth shaft, S ₂ for a contact end and a first side of the thigh socket contact means of a third probe and the displacement sensing element of H ₂ The vertical distance between them. A knee joint ligament relaxation measuring device is adapted to be mounted on a thigh and a calf connected to the thigh, the knee joint ligament relaxation measuring device comprising: a thigh socket mechanism, sleeved on the thigh And including a first front end surface, and a first side surface connected to the first front end surface; a calf sleeve mechanism, sleeved on the lower leg and including a second front end surface, and a second front end surface The second side of the connection; a first measuring mechanism is coupled between the first front end surface and the second front end surface for measuring displacement of a nodule of the tibia after the force of a tibia of the lower leg is applied by a force in a forward or backward direction And a second measuring mechanism connected between the first side surface and the second side surface for measuring an amount of inversion of the tibia after being applied by a force in a leftward or rightward direction; wherein the first The measuring mechanism comprises a carrying frame and a front and rear force applying rod, the carrying frame comprises a frame body engaged with the front and rear force applying rods, and a joint body and the first front end surface a first engaging member, the first engaging member includes a first shaft extending in a left-right direction, the frame is rotatably pivotally connected to the first shaft, and the carrying frame includes a front and rear direction extending for the front and rear a through hole penetrating the force applying rod, the one end of the front and rear force applying rod is joined to the second front end surface, and the front and rear force applying rod member is movable along a direction perpendicular to the second front end surface The socket mechanism applies a force; the first measuring mechanism further includes a first force And a first displacement sensing element, the first force sensing element is disposed on the front and rear force applying rods for sensing a force applied to the forward and backward force applying rods, the first displacement The sensing component is disposed on the frame and abuts the calf for sensing the displacement of the nodule of the tibia; the first displacement sensing component includes a body disposed on the carrier frame, and a through hole a probe extending in the front-rear direction and extending and contracting relative to the body, and a contact plate disposed at one end of the probe and abutting on the lower leg and corresponding to the nodule position. The knee ligament relaxation measuring device according to claim 13, wherein the forward and backward urging member comprises a rod body, and a joint between the rod body and the second front end surface The second engaging member includes a second shaft extending in a left-right direction, and the rod body is rotatably pivotally coupled to the second shaft. The knee ligament relaxation measuring device according to claim 14, wherein the calf splicing mechanism comprises a third shaft extending in a front-rear direction, and a left and right urging member for applying a force The second measuring unit includes a first connecting unit, a second connecting unit, a second power sensing component and a second displacement sensing component. The first connecting unit is disposed on the first side and includes a first a second connecting unit pivotally connected to the second side and rotatably rotating around the third shaft, the second connecting unit comprising a guiding rod slidably disposed in the sleeve, the second a force sensing element is disposed on the left and right force applying rods for sensing a force applied to the left and right force applying rods, wherein the second displacement sensing element is disposed on the second connecting unit and coupled to the calf The socket mechanism abuts to sense the amount of turnover of the calf socket mechanism. The knee ligament relaxation measuring device according to claim 15, wherein the shank slinging mechanism further comprises a first bearing member disposed on the second front end surface and pivotally connected to the engaging member, The first bearing member defines a first center of rotation that is coplanar and parallel to the third axis. The knee ligament relaxation measuring device according to claim 16, wherein the thigh socket mechanism comprises a front and rear direction extending a fourth axis, the first connecting unit is pivotally connected to the first side and rotatably rotates around the fourth axis, and the second measuring mechanism further comprises a first connecting unit disposed on the first connecting unit for sensing the thigh A third displacement sensing element of the amount of turnover of the socket mechanism. The knee ligament relaxation measuring device according to claim 17, wherein the thigh socket mechanism further includes a second bearing member disposed on the first front end surface and pivotally connected to the carrier frame, The second bearing member defines a second center of rotation that is coplanar and parallel to the fourth axis. The knee joint ligament relaxation measuring device according to claim 18, wherein the first connecting unit further comprises a first connecting member disposed on the sleeve, and a pivoting connection to the fourth shaft And a first hinge member rotatably rotating around the fourth shaft, the first hinge member including a first pivoting shaft portion for pivoting the first connecting member, the first pivoting shaft portion extending in a left-right direction The second connecting unit further includes a second connecting member disposed on the guiding rod, and a second hinge member pivotally connected to the third shaft and rotatably rotating around the third shaft, the second hinge The member includes a second pivoting shaft portion for pivoting the second connecting member, and the second pivoting shaft portion extends in a left-right direction. The knee ligament relaxation measuring device according to claim 19, wherein the second displacement sensing element comprises a probe abutting the second side and extending in a left-right direction, the second displacement The probe of the sensing component is expandable and contractible with the rotation of the calf socket mechanism, and the third displacement sensing component includes a probe that abuts the first side and extends in the left-right direction. The needle of the third displacement sensing element can be expanded and contracted as the thigh socket mechanism rotates. The knee ligament relaxation measuring device according to claim 20, wherein the first and second force sensing elements respectively generate a force sensing signal, the first, second, and third displacements The sensing elements respectively generate a displacement sensing signal, the knee ligament relaxation measuring device further comprising a first and second force sensing elements and the first, second and third displacement sensing elements A computer that is connected to the computer, and the computer can capture the power sensing signal and the displacement sensing signal for analysis and comparison. The knee ligament relaxation measuring device according to claim 21, wherein the second measuring mechanism measures the turning angle of the tibia to the left or right, the tibia is left or right The flip angle is related to an angle conversion formula, which is: β is the angle of inversion, α _{1 is} the angle between the second measuring mechanism and the second side of the calf socket mechanism, and Δ _{1 is} the linear displacement of the probe of the second displacement sensing element, and Y _{1 is} the first a vertical distance between a flat end of the protruding end of the probe of the second displacement sensing element and the third axis, and L ₁ is a central axis of the probe of the second displacement sensing element a vertical distance from the third axis, H ₁ is the vertical distance between the second side of the calf socket mechanism and the third axis, and S ₁ is a sum of the probes of the second displacement sensing element the vertical distance _between the second side of the contact end of the leg in contact with the socket means H; α ₂ angle for a second side surface of the first measuring means to the thigh socket mechanism, △ ₂ for the first The linear displacement amount of the probe of the three displacement sensing element, Y ₂ is the vertical between the end of the first connector and the convex end of the probe of the third displacement sensing element and the fourth axis distance, L ₂ that the central axis of the third probe displacement sensing element and the vertical distance between the fourth shaft, H ₂ for the thighs Means connected to the first side of the vertical distance between the fourth shaft, S ₂ for a contact end and a first side of the thigh socket contact means of a third probe and the displacement sensing element of H ₂ The vertical distance between them.