An orthopedic knee cruciate ligament detection system

Abstract

The invention discloses an orthopedic knee joint cruciate ligament detection system, comprising a patellar fixation base, a scale measuring ruler bracket, a scale measuring ruler, a tibia fixation base, a visual digital tensioner and a fixing strap. The invention is easy to use and can assist clinicians in making rapid data-based detection of the damage and laxity of the anterior and posterior cruciate ligaments that stabilize the anterior and posterior movement of the knee joint, thereby reducing the misdiagnosis and missed diagnosis rates caused by manual judgment, and also enables the injured to accurately understand the stability of their own knee joints.

Description

Technical Field

[0001] The invention belongs to the field of clinical diagnosis of orthopedic knee joints, and in particular relates to an orthopedic knee joint cruciate ligament detection system. Background Art

[0002] The anterior cruciate ligament and posterior cruciate ligament of the knee joint are referred to as cruciate ligaments.

[0003] The anterior cruciate ligament refers to the dense connective tissue attached to the back, top and outside of the medial side of the lateral femoral condyle of the knee joint. After gathering in the intercondylar fossa, it obliquely moves to the front, bottom and inside of the knee joint and ends at the depression in front of the intercondylar ridge of the tibial plateau to form a ligament structure. Its main function is to control the abnormal anterior movement and rotation of the tibia of the knee joint, and cooperate with other static and dynamic stabilization devices of the knee joint to maintain the stability of the knee joint. It is common to be injured in sudden stops, sudden turns, changes of direction and the moment of landing from high jumps during exercise.

[0004] The lower attachment point of the posterior cruciate ligament starts from the posterior part of the posterior intercondylar fossa of the tibia, runs obliquely inward and upward about 5mm below the articular surface, and ends at the anterior medial part of the intercondylar side of the medial femoral condyle as the upper attachment point. The attachment part is arc-shaped and about 20mm wide. The posterior cruciate ligament is relatively thick, about twice the thickness of the anterior cruciate ligament, with an average length of 38mm and a width of 13mm. The main function is to control the abnormal posterior displacement and rotation of the tibia of the knee joint, and cooperate with other static and dynamic stabilization devices of the knee joint to maintain the stability of the knee joint. It is common in abnormal accident injuries such as car accidents.

[0005] For the diagnosis of cruciate ligament injuries, the most commonly used physical examination diagnosis is to make a clear diagnosis through the drawer test, Lachman test, etc. Most of the physical examination diagnoses are based on the doctor's estimation of the anterior and posterior movement of the tibial plateau through feel and visual observation as the judgment standard. It is greatly affected by human factors. There is no data support for the physical examination diagnosis of injured patients. There are many subjective factors and it is difficult to achieve a high clear diagnosis rate due to the patient's nervousness. The misdiagnosis and missed diagnosis rates are high.

[0006] With the rapid development of sports medicine, people's awareness and attention to sports injuries and their requirements for quality of life have increased. It is necessary to design a convenient, accurate and data-based diagnostic tool for knee injuries. The orthopedic knee cruciate ligament detection system came into being. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide an orthopedic knee cruciate ligament detection system in view of the deficiencies of the above-mentioned prior art, which has a simple structure, is easy to use, and provides accurate data, so that clinicians can complete the clinical examination and diagnosis of the knee cruciate ligament conveniently, quickly, accurately, and in a standardized manner.

[0008] The technical solution adopted by the present invention is: an orthopedic knee cruciate ligament detection system, including a patellar fixation base, a scale measuring ruler bracket, a scale measuring ruler, a tibia fixation base, a visual digital tensioner and a fixing strap;

[0009] The patella fixing base comprises a patella platform portion, a measuring ruler platform portion with a groove at one end, and a patella fixing base connecting portion, wherein one end of the patella platform portion is vertically connected to one end of the patella fixing base connecting portion, and one end of the measuring ruler platform portion away from the groove is vertically connected to the other end of the patella fixing base connecting portion, and the patella platform portion and the end of the measuring ruler platform portion away from the patella fixing base connecting portion extend in opposite directions, and a scale measuring ruler bracket sliding fixing portion is provided near the middle position on the surface of one end of the measuring ruler platform portion close to the patella fixing base connecting portion, and a scale measuring ruler bracket locking screw matching therewith is provided on the sliding fixing portion of the scale measuring ruler bracket, and vertical sliding guide grooves are provided at two corners of one end of the measuring ruler platform portion where the groove is located;

[0010] The scale measuring ruler bracket comprises a scale measuring ruler bracket sliding rod and a scale measuring ruler bracket connecting portion connected to the scale measuring ruler bracket sliding rod at one end, the scale measuring ruler bracket sliding rod is slidably connected to the scale measuring ruler bracket sliding fixing portion, and both end surfaces of the scale measuring ruler bracket connecting portion away from the scale measuring ruler bracket sliding rod are provided with scale measuring ruler bracket screw holes;

[0011] The scale measuring ruler comprises a scale measuring ruler connecting part and a measuring ruler whose numerical starting end is connected to the scale measuring ruler connecting part, the measuring ruler is provided with an electronic dial slidably connected thereto, and both ends of the scale measuring ruler connecting part are provided with scale measuring ruler fixing screw holes corresponding to the screw holes of the scale measuring ruler bracket;

[0012] The tibial fixation base comprises a base plate with a groove at one end thereof, two corners of the end where the groove of the base plate is located are provided with sliding guide rails connecting the tibial fixation base and the patellar fixation base perpendicular to the base plate, the sliding guide rails connecting the tibial fixation base and the patellar fixation base are slidably connected with the vertical sliding guide groove, the end of the sliding guide rails connecting the tibial fixation base and the patellar fixation base away from the base plate is provided with a sliding guide anti-slip spring, and the end of the base plate where the groove of the base plate is located near the position of the sliding guide rail connecting the tibial fixation base and the patellar fixation base is also provided with a proximal left side strap fixing port of the tibial fixation base and a tibial fixation base The right side strap fixing opening of the base proximal end is provided, and the position of the left side strap fixing opening of the tibial fixation base proximal end corresponding to the left side strap fixing opening of the tibial fixation base is provided with the left side strap fixing opening of the tibial fixation base distal end, and the position of the right side strap fixing opening of the tibial fixation base proximal end corresponding to the right side strap fixing opening of the tibial fixation base proximal end of the base is provided with the right side strap fixing opening of the tibial fixation base distal end, and the surface of the one end where the groove of the base plate is located is also provided with a visual digital tensioner connection part near the middle position, and the surface of the base plate located between the visual digital tensioner connection part and the right side strap fixing opening of the tibial fixation base distal end is evenly provided with a plurality of tibial fixation base weight reduction holes;

[0013] The visual digital tensioner includes a tensioner body. The bottom of the tensioner body is provided with a tensioner and tibia fixation base connection part, and the tensioner and tibia fixation base connection part is connected to the visual digital tensioner connection part;

[0014] The fixing strap comprises a fixing strap body, and fixing strap elastic buckle connecting parts are provided near the middle position on both sides of the fixing strap body.

[0015] In one embodiment, the thickness of the patella fixation base is 4 mm, and the width of the patella fixation base is 60 mm.

[0016] In one embodiment, the thickness of the tibial fixation base is 4 mm, and the width of the tibial fixation base is 60 mm.

[0017] In one of the embodiments, the measuring ruler has a measuring range of 0-100 mm.

[0018] In one of the embodiments, the tensioner body has a measuring range of 0-50KG.

[0019] The beneficial effects of the present invention are:

[0020] 1. Simple structure, easy to operate, and clinicians can use it without special training;

[0021] 2. The tool can be reused without consumption cost, and the tool has good repeatability accuracy, and the accuracy of the data can be guaranteed by performing multiple measurements;

[0022] 3. The tool is designed to achieve standardized inspections, avoiding misdiagnosis or missed diagnosis due to medical skills or misjudgment. The test results are directly visible, and the test subjects can clearly see the test results.

[0023] 4. Clinicians can use non-invasive digital data to detect knee joint laxity at any time, which can help doctors reduce missed diagnoses and misdiagnoses, and has great value for popularization and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the patella fixing base of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the scale measuring ruler support of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the scale measuring ruler of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the tibial fixation base of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the visual digital tensioner of the present invention;

[0030] Figure 7 It is a schematic diagram of the fixing strap structure of the present invention.

[0031] In the figure: 1, patellar fixing base; 2, scale measuring ruler bracket; 3, scale measuring ruler; 4, tibial fixing base; 5, visual digital tensioner; 6, fixing strap; 11, patellar platform; 12, scale measuring ruler bracket sliding fixing position; 13, scale measuring ruler bracket locking screw; 14, vertical sliding guide groove; 15, measuring ruler platform; 16, patellar fixing base connection; 21, scale measuring ruler bracket sliding rod; 22, scale measuring ruler bracket connection; 23, scale measuring ruler bracket screw hole; 31, scale measuring ruler connection; 32, measuring ruler; 33, electronic dial; 34, scale measuring ruler Screw hole for fixing ruler; 41. Sliding guide rail for connecting tibial fixation base and patellar fixation base; 42. Anti-slip retaining spring for sliding guide rail; 43. Left side strap fixing opening at the proximal end of tibial fixation base; 44. Right side strap fixing opening at the proximal end of tibial fixation base; 45. Left side strap fixing opening at the distal end of tibial fixation base; 46. Right side strap fixing opening at the distal end of tibial fixation base; 47. Connection part of visual digital tensioner; 48. Weight reduction hole part of tibial fixation base; 49. Base plate; 51. Tensioner body; 52. Connection part between tensioner and tibial fixation base; 61. Fixed strap body; 62. Fixed strap elastic buckle connection part. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, an orthopedic knee cruciate ligament detection system includes a patellar fixation base 1, a scale measuring ruler bracket 2, a scale measuring ruler 3, a tibial fixation base 4, a visual digital tensioner 5 and a fixing strap 6;

[0034] The patella fixing base 1 comprises a patella platform portion 11, a measuring ruler platform portion 15 with a groove at one end, and a patella fixing base connecting portion 16, wherein one end of the patella platform portion 11 is vertically connected to one end of the patella fixing base connecting portion 16, and the end of the measuring ruler platform portion 15 away from the groove is vertically connected to the other end of the patella fixing base connecting portion 16, and the patella platform portion 11 and the end of the measuring ruler platform portion 15 away from the patella fixing base connecting portion 16 extend in opposite directions, and a scale measuring ruler bracket sliding fixing portion 12 is provided near the middle position on the surface of one end of the measuring ruler platform portion 15 close to the patella fixing base connecting portion 16, and a scale measuring ruler bracket locking screw 13 matched therewith is provided on the scale measuring ruler bracket sliding fixing portion 12, and vertical sliding guide grooves 14 are provided at two corners of the end where the groove of the measuring ruler platform portion 15 is located;

[0035] The scale measuring ruler bracket 2 comprises a scale measuring ruler bracket sliding rod 21 and a scale measuring ruler bracket connecting portion 22 connected to the scale measuring ruler bracket sliding rod 21 at one end, the scale measuring ruler bracket sliding rod 21 is slidably connected to the scale measuring ruler bracket sliding fixing portion 12, and both end surfaces of the scale measuring ruler bracket connecting portion 22 away from the scale measuring ruler bracket sliding rod 21 are provided with scale measuring ruler bracket screw holes 23;

[0036] The scale measuring ruler 3 comprises a scale measuring ruler connecting portion 31 and a measuring ruler 32 whose numerical starting end is connected to the scale measuring ruler connecting portion 31. The measuring ruler 32 is provided with an electronic dial 33 slidably connected thereto. Both ends of the scale measuring ruler connecting portion 31 are provided with scale measuring ruler fixing screw holes 34 corresponding to the scale measuring ruler bracket screw holes 23.

[0037] The tibial fixation base 4 includes a base plate 49 with a groove at one end thereof, and two corners of the end of the base plate 49 where the groove is located are provided with sliding guide rails 41 for connecting the tibial fixation base and the patellar fixation base perpendicular to the base plate 49, and the sliding guide rails 41 for connecting the tibial fixation base and the patellar fixation base are slidably connected with the vertical sliding guide groove 14, and the end of the sliding guide rails 41 for connecting the tibial fixation base and the patellar fixation base away from the base plate 49 is provided with a sliding guide anti-slip retaining spring 42, and the end of the base plate 49 where the groove is located near the position of the sliding guide rails 41 for connecting the tibial fixation base and the patellar fixation base is also provided with a tibial fixation base proximal left side strap fixing port 43 and a tibial fixation base proximal left side strap fixing port 43 and a tibial fixation base proximal left side strap fixing port 43 and a tibial fixation base proximal left side strap fixing port 43 are provided with ... and a tibial fixation base proximal left side strap fixing port 43 and a tibial fixation base proximal left The proximal right side strap fixing opening 44 of the seat, the distal left side strap fixing opening 45 of the tibial fixation base is provided at a position corresponding to the proximal left side strap fixing opening 43 of the tibial fixation base at one end of the base plate 49 away from the groove, the distal right side strap fixing opening 46 of the tibial fixation base is provided at a position corresponding to the proximal right side strap fixing opening 44 of the tibial fixation base at one end of the base plate 49 away from the groove, a visual digital tensioner connecting portion 47 is also provided near the middle position on the surface of one end where the groove of the base plate 49 is located, and a plurality of tibial fixation base weight reduction holes 48 are evenly opened on the surface of the base plate 49 between the visual digital tensioner connecting portion 47 and the distal right side strap fixing opening 46 of the tibial fixation base;

[0038] The visual digital tensioner 5 comprises a tensioner body 51. A tensioner and tibia fixation base connection part 52 is provided at the bottom of the tensioner body 51, and the tensioner and tibia fixation base connection part 52 is connected to the visual digital tensioner connection part 47;

[0039] The fixing strap 6 comprises a fixing strap body 61 , and fixing strap elastic buckle connection parts 62 are provided near the middle position on both sides of the fixing strap body 61 .

[0040] In this embodiment, the thickness of the patella fixation base 1 is 4 mm, and the width of the patella fixation base 1 is 60 mm.

[0041] In this embodiment, the thickness of the tibial fixation base 4 is 4 mm, and the width of the tibial fixation base 4 is 60 mm.

[0042] In this embodiment, the measuring ruler 32 has a measuring range of 0-100 mm.

[0043] In this embodiment, the tensioner body 51 has a measuring range of 0-50KG.

[0044] The patella fixing base 1 has a micro-concave structure, and the inner surface of the concave structure is provided with ultra-thin flannel cloth for preventing cold stimulation.

[0045] The connecting slide grooves of the patella fixing base 1 and the tibia fixing base 4 adopt 10 mm double cylindrical rods as sliding tracks.

[0046] The scale measuring ruler 3 has two display functions: physical scale and electronic data. The starting end of the scale 32 is located at the tibial tubercle. The electronic dial 33 can be set to zero at any position for measurement. The measurable range of the electronic dial 33 is greater than 100mm, and the electronic dial 33 can perform unit conversion between millimeters and inches.

[0047] When using this orthopedic knee cruciate ligament testing system, the subject is in a supine position, the Lachman test is tested at the 10-degree knee position, and the drawer test is tested at the 90-degree knee position. During the test, the tibial fixation base 4 is first placed on the front edge of the tibia, the upper fixing strap 6 is fixed and tightened through the proximal left strap fixing port 43 of the tibial fixation base and the proximal right strap fixing port 44 of the tibial fixation base, the lower fixing strap 6 is fixed and tightened through the distal left strap fixing port 45 of the tibial fixation base and the distal right strap fixing port 46 of the tibial fixation base, and then the tibial fixation base is connected to the patellar fixation base through the sliding guide rail 41 connected to the vertical sliding guide groove 14 to connect the tibial fixation base 4 to the patellar fixation base 1, the sliding guide rail anti-slip spring 42 can prevent the sliding guide rail 41 connected to the tibial fixation base from slipping out, and then the patellar platform part 11 of the patellar fixation base 1 is placed closely on the patella, and pushed Move the scale ruler 3 to the skin surface, adjust the scale ruler bracket 2 so that the starting end of the scale ruler 32 is located directly above the tibial tubercle, and then lock the scale ruler bracket with the locking screw 13. Then push the scale ruler 3 to the skin surface of the tibial tubercle, press the ZERO key to reset the electronic dial 33, and record the current scale of the scale ruler 32. Then use the visual digital tensioner 5 to apply tension perpendicular to the tibial surface, and stop when the data displayed by the tensioner body 51 reaches a reasonable tension value; at the same time, record the current displayed data of the scale ruler 3. By comparing the tests of the two knee joints and calculating the measurement data of the scale ruler 3, the difference data of the anterior or posterior displacement of the tibial plateau can be seen, and the initial injury status of the anterior and posterior cruciate ligaments can be evaluated and diagnosed.

[0048] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An orthopedic knee cruciate ligament detection system, characterized in that: It includes a patella fixing base, a scale measuring ruler bracket, a scale measuring ruler, a tibial fixing base, a visual digital tensioner and a fixing strap; The patella fixing base comprises a patella platform portion, a measuring ruler platform portion with a groove at one end, and a patella fixing base connecting portion, wherein one end of the patella platform portion is vertically connected to one end of the patella fixing base connecting portion, and one end of the measuring ruler platform portion away from the groove is vertically connected to the other end of the patella fixing base connecting portion, and the patella platform portion and the end of the measuring ruler platform portion away from the patella fixing base connecting portion extend in opposite directions, and a scale measuring ruler bracket sliding fixing portion is provided near the middle position on the surface of one end of the measuring ruler platform portion close to the patella fixing base connecting portion, and a scale measuring ruler bracket locking screw matching therewith is provided on the sliding fixing portion of the scale measuring ruler bracket, and vertical sliding guide grooves are provided at two corners of one end of the measuring ruler platform portion where the groove is located; The scale measuring ruler bracket comprises a scale measuring ruler bracket sliding rod and a scale measuring ruler bracket connecting portion connected to the scale measuring ruler bracket sliding rod at one end, the scale measuring ruler bracket sliding rod is slidably connected to the scale measuring ruler bracket sliding fixing portion, and both end surfaces of the scale measuring ruler bracket connecting portion away from the scale measuring ruler bracket sliding rod are provided with scale measuring ruler bracket screw holes; The scale measuring ruler comprises a scale measuring ruler connecting part and a measuring ruler whose numerical starting end is connected to the scale measuring ruler connecting part, the measuring ruler is provided with an electronic dial slidably connected thereto, and both ends of the scale measuring ruler connecting part are provided with scale measuring ruler fixing screw holes corresponding to the screw holes of the scale measuring ruler bracket; The tibial fixation base comprises a base plate with a groove at one end thereof, two corners of the end where the groove of the base plate is located are provided with sliding guide rails connecting the tibial fixation base and the patellar fixation base perpendicular to the base plate, the sliding guide rails connecting the tibial fixation base and the patellar fixation base are slidably connected with the vertical sliding guide groove, the end of the sliding guide rails connecting the tibial fixation base and the patellar fixation base away from the base plate is provided with a sliding guide anti-slip spring, and the end of the base plate where the groove of the base plate is located near the position of the sliding guide rail connecting the tibial fixation base and the patellar fixation base is also provided with a proximal left side strap fixing port of the tibial fixation base and a tibial fixation base The right side strap fixing opening of the base proximal end is provided, and the position of the left side strap fixing opening of the tibial fixation base proximal end corresponding to the left side strap fixing opening of the tibial fixation base is provided with the left side strap fixing opening of the tibial fixation base distal end, and the position of the right side strap fixing opening of the tibial fixation base proximal end corresponding to the right side strap fixing opening of the tibial fixation base proximal end of the base is provided with the right side strap fixing opening of the tibial fixation base distal end, and the surface of the one end where the groove of the base plate is located is also provided with a visual digital tensioner connection part near the middle position, and the surface of the base plate located between the visual digital tensioner connection part and the right side strap fixing opening of the tibial fixation base distal end is evenly provided with a plurality of tibial fixation base weight reduction holes; The visual digital tensioner comprises a tensioner body, a tensioner and tibia fixation base connection part is provided at the bottom of the tensioner body, and the tensioner and tibia fixation base connection part is connected to the visual digital tensioner connection part; The fixing strap comprises a fixing strap body, and fixing strap elastic buckle connection parts are provided near the middle of both sides of the fixing strap body; The thickness of the patella fixing base is 4 mm, and the width of the patella fixing base is 60 mm; The thickness of the tibial fixation base is 4 mm, and the width of the tibial fixation base is 60 mm.

2. The orthopedic knee cruciate ligament detection system according to claim 1, characterized in that: The measuring ruler has a measuring range of 0-100 mm.

3. The orthopedic knee cruciate ligament detection system according to claim 1, characterized in that: The measuring range of the tensioner body is 0-50KG.

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