CN115969354A - Shin bone rotation angle caliber - Google Patents
Shin bone rotation angle caliber Download PDFInfo
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- CN115969354A CN115969354A CN202211722277.6A CN202211722277A CN115969354A CN 115969354 A CN115969354 A CN 115969354A CN 202211722277 A CN202211722277 A CN 202211722277A CN 115969354 A CN115969354 A CN 115969354A
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- tibia
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 206010064515 Tibial torsion Diseases 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000003423 ankle Anatomy 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 description 6
- 210000000629 knee joint Anatomy 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 4
- 208000032170 Congenital Abnormalities Diseases 0.000 description 3
- 210000000544 articulatio talocruralis Anatomy 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 206010061619 Deformity Diseases 0.000 description 1
- 208000005137 Joint instability Diseases 0.000 description 1
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 1
- 206010072970 Meniscus injury Diseases 0.000 description 1
- 206010031252 Osteomyelitis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 206010008129 cerebral palsy Diseases 0.000 description 1
- 201000011228 clubfoot Diseases 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009547 development abnormality Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009546 growth abnormality Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 231100000812 repeated exposure Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 206010043827 tibia fracture Diseases 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Abstract
The invention discloses a tibia rotation angle measurer, which comprises two clamping handles, a driving device, a measuring device and a locking device, wherein the driving device and the measuring device are arranged in a shell and are used for driving the two clamping handles to open and close; the driving device comprises a handle and a reset mechanism arranged between the handle and the two clamping handles; the handle comprises a fixed handle and a grab handle, the fixed handle is formed by horizontally extending the top of the shell, the grab handle and the fixed handle are positioned on the same plane, and the middle position of the grab handle is hinged relative to the edge part of the shell; the two clamping handles are in an X-shaped structure, the clamping handles are hinged relative to the shell, and the grab handle applies downward force to the two ends of the clamping handles, which are positioned in the shell, through the resetting mechanism; the two measuring points at the tibia are clamped through the two clamping handles, then the pointer of the measuring device points to the corresponding scale value, and the pointer is locked through the locking device.
Description
Technical Field
The invention relates to the field of orthopedic medical instruments, in particular to a tibia rotation angle measurer.
Background
The tibial torsion angle, also known as the tibial rotation angle, is the physiological degree of torsion of the tibial distal ankle joint rotation axis about the tibial longitudinal axis in cross section relative to the proximal knee joint rotation axis, and is defined as the angle between the transverse axis of the tibial proximal articular surface and the transverse axis of the tibial distal articular surface in the coronal plane. The method is an inherent angle of human tibia physiological anatomy, the abnormality of the method is closely related to diagnosis and treatment of diseases such as growth and development abnormality of children, congenital cerebral palsy, tibia fracture, knee joint internal and external deformity high osteotomy correction, crus congenital or traumatic short-term deformity, equinovarus deformity, tibia osteomyelitis osteotomy movement supervision, knee joint ligament and meniscus injury repair, knee joint instability and even knee and ankle joint replacement, and how to correctly measure the tibia torsion angle and fully correct the rotation abnormality is a key of treatment and is the meaning of the tibia torsion angle. In recent years, foreign researchers develop mechanical orthotics for lower limb rotation abnormality caused by knee osteoarthritis, but specific relation between mechanism formation and poor rotation and clinical injury is achieved, particularly innovation of measurement methods is achieved, few people ask about the study, many problems need to be solved, the root cause of the problem is that poor rotation of a tibia is easy to omit, selection of measurement methods in clinical is limited, measurement is complicated, and results are inaccurate, accurate, simple and effective measurement of the tibia torsion angle is the basis only by determining a normal range when the tibial rotation abnormality is clinically judged at present, and accordingly the tibial rotation abnormality can be diagnosed, and further the tibial rotation abnormality is treated.
The measurement method of the tibia torsion angle is mainly divided into three categories: the corpse measurement is directly carried out, the measurement is directly carried out on the corpse, the result is visual and accurate, but the corpse measurement is separated from the whole body and can not be carried out in a living body, and the clinical application is less; secondly, indirect assessment is carried out through clinical examination, the measurement of the clinical examination method can repeatedly and directly measure the living body, the method is convenient and harmless to the human body, but accurate bony mark points are difficult to find, the result is inaccurate, and no better clinical direct measurement method exists at present; thirdly, the imaging detection is carried out by utilizing the CT, the CT measuring method can be used for repeatedly carrying out the measurement on the living body, and the result is more accurate; however, CT measurements require repeated exposures, which can expose the patient to a large amount of radiation in a short period of time, and CT costs are too high, increasing the cost of treatment for the average patient.
Disclosure of Invention
In order to solve the above-mentioned multinomial defect that leads to among the prior art, need design a section and be used for measuring the instrument of shin bone rotation angle specially, it is simple and convenient to use, and the measuring result error is little.
In order to achieve the above purpose, the present invention provides the following technical solutions: a tibia rotation angle measurer comprises two clamping handles, and is characterized by also comprising a driving device, a measuring device and a locking device, wherein the driving device and the measuring device are arranged in a shell and are used for driving the two clamping handles to open and close;
the driving device comprises a handle and a reset mechanism arranged between the handle and the two clamping handles; the handle comprises a fixed handle and a grab handle, the fixed handle is formed by horizontally extending the top of the shell, the grab handle and the fixed handle are in the same plane, and the middle position of the grab handle is hinged relative to the edge of the shell; the two clamp handles are in an X-shaped structure, the clamp handles are hinged relative to the shell, and the grab handle applies downward force to the two ends of the clamp handles in the shell through the resetting mechanism;
the measuring device comprises a rotating shaft, a gravity cake and a pointer, wherein the gravity cake and the pointer are fixed relative to the end part of the rotating shaft, the gravity cake and the pointer are arranged at two ends respectively and on the same straight line, the rotating shaft is vertically arranged relative to the shell, and a main body of the rotating shaft is rotationally connected relative to the shell.
Preferably, canceling release mechanical system includes two connecting rods, spring, sliding sleeve and location axle, and the location axle is located the inside of casing, for the casing fixed setting in vertical direction, sliding sleeve slides in vertical direction for the location axle, and two connecting rods set up respectively in the both sides of location axle, and its both ends are articulated with the tip of sliding sleeve and clamp holder respectively, the tip of grab handle passes the location axle, and the spring housing is epaxial in the location, and it sets up between grab handle and bottom fixed department.
Preferably, a positioning block is arranged in the shell, and tension springs for connecting the two clamping handles are respectively arranged on two sides of the positioning block.
Preferably, the locking device comprises a locking button, a locking sleeve and a locking block, the locking sleeve and the locking block are respectively arranged at the end parts of the locking button and the rotating shaft, the locking sleeve is in contact with the locking block, the locking block is of a convex structure, and the locking sleeve is of a concave structure; the part of the locking button positioned in the shell is sleeved with a compression spring.
Preferably, an angle scale is arranged at the position of the shell corresponding to the pointer, and a transparent cover body covers the angle scale.
A using method of a tibia rotation angle measurer comprises the following steps,
1) Marking measuring points on a tibial tubercle plane and medial and lateral ankle planes of a patient by using a pen;
2) Rotating the elastic knob to ensure that the pointer is in a free moving state; pressing the handle to open the clamping handles at the two sides, clamping the measuring points marked on the tibial tubercle plane by the clamping handles at the two sides, loosening the handle and clamping the measuring positions by the clamping handles; adjusting the measuring device on the vertical plane of the central axis of the tibia;
3) The gauge deflects, causing the pointer to rotate relative to the angle scale;
4) Screwing the locking button to lock the pointer, taking the measurer off the patient and recording the rotation angle;
5) Keeping the posture of the patient still, keeping the dial orientation consistent, measuring and recording the rotation angles of the medial and lateral malleolus planes by the same method, and calculating the difference of the two recorded rotation angles to obtain an absolute value, wherein the absolute value is the calculated tibia torsion angle.
6) The dial takes the central axis of the tibia as a reference, the middle is zero degrees, the left and the right are respectively deviated by 60 degrees, the left is a positive value, the right is a negative value, when recording and calculating a difference value, a positive sign and a negative sign are required to be taken, the absolute value of the finally obtained torsion angle is taken, and the measuring doctor judges the internal rotation or the external rotation on site.
The beneficial effect of adopting above technical scheme is: the tibia rotation angle measurer with the structure is simple to operate, is specially designed for measurement of the tibia torsion angle, and reduces errors of measurement results to the maximum extent; the measurement can be performed on different single living bodies, as opposed to cadaver measurements, and has practical significance for patient diseases; compared with CT medical image measurement, the device has the advantages that the cost is low, the device can be repeatedly used, and the cost is greatly saved in the aspect of measuring the tibia torsion angle.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic structural diagram of the front side of the measurer;
FIG. 3 is a schematic view of the inside of a case of the measuring device;
FIG. 4 is a schematic view showing the inside structure of a casing on the other side of the measuring device;
FIG. 5 is an exploded view of the measuring device and locking device of the present meter;
FIG. 6 is a cross-sectional view of the measuring device and locking device of the present measuring device.
The device comprises a clamp handle 1, a shell 2, a fixed handle 3, a grab handle 4, a rotating shaft 5, a gravity cake 6, a pointer 7, a connecting rod 8, a spring 9, a sliding sleeve 10, a positioning shaft 11, a positioning block 12, a tension spring 13, a locking button 14, a locking sleeve 15, a locking block 16, an angle scale 17 and a transparent cover 18.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a specific embodiment of the invention: a tibia rotation angle measurer comprises two clamp handles 1, a driving device, a measuring device and a locking device, wherein the driving device and the measuring device are arranged in a shell 2 and are used for driving the two clamp handles 1 to open and close;
the driving device comprises a handle and a reset mechanism arranged between the handle and the two clamp handles 1; the handle comprises a fixed handle 3 and a grab handle 4, the fixed handle 3 is formed by horizontally extending the top of the shell 2, the grab handle 4 and the fixed handle 3 are in the same plane, and the middle position of the grab handle 4 is hinged relative to the edge part of the shell 2; the two clamp handles 1 are in an X-shaped structure, the clamp handles 1 are hinged relative to the shell 2, and the grab handle 4 applies downward pressure to two ends of the clamp handles 1 positioned in the shell 2 through the resetting mechanism;
the measuring device comprises a rotating shaft 5, a gravity cake 6 and a pointer 7, wherein the gravity cake 6 and the pointer 7 are fixed relative to the end part of the rotating shaft 5, the gravity cake 6 and the pointer 7 are arranged at two ends of the rotating shaft 5 on the same straight line respectively, the rotating shaft 5 is vertically arranged relative to the shell 2, and the main body of the rotating shaft 5 is rotationally connected relative to the shell 2.
Reset mechanism includes two connecting rods 8, spring 9, sliding sleeve 10 and location axle 11, and location axle 11 is located the inside of casing 2, for casing 2 fixed setting in vertical direction, sliding sleeve 10 slides in vertical direction for location axle 11, and two connecting rods 8 set up respectively in the both sides of location axle 11, and its both ends are articulated with the tip of sliding sleeve 10 and clamp holder 1 respectively, location axle 11 is passed to the tip of grab handle 4, and spring 9 overlaps on location axle 11, and it sets up between grab handle 4 and bottom fixed department.
A positioning block 12 is arranged in the shell 2, and tension springs 13 connected with the two clamping handles 1 are respectively arranged on two sides of the positioning block 12.
The locking device comprises a locking button 14, a locking sleeve 15 and a locking block 16, wherein the locking sleeve 15 and the locking block 16 are respectively arranged at the end parts of the locking button 14 and the rotating shaft 5, the locking sleeve 15 is in contact with the locking block 16, the locking block 16 is of a convex structure, and the locking sleeve 15 is of a concave structure; the part of the locking button 14 inside the housing 2 is sleeved with a compression spring 19.
The casing 2 is provided with an angle scale 17 corresponding to the position of the pointer 7, and the angle scale 17 is covered with a transparent cover 18.
The using method of the measurer comprises the following steps,
1) Before the use, the patient only needs lie flat or sit upright state (ensure the knee level), marks patient's shin bone near-end (shin bone tubercle plane), distal end (medial malleolus plane) both ends measuring point with the pen, makes things convenient for operation on next step.
2) And the locking button is rotated to release the pointer from a locked state, so that the pointer is ensured to be in a free moving state. The grip is pressed to open the clamping handles at the two sides below the measuring device, the measuring point marked at the proximal end of the tibia is clamped, the grip is loosened, the measuring device is clamped at the measuring position under the action of the spring, and the measuring device is roughly adjusted on the vertical plane of the central axis of the tibia (with deviation of +/-30 degrees).
3) Because caliber pointer, gravity cake and pivot are assembled together, during the use, draw the locking button to the outside for locking sleeve and latch segment separation, before the pivot locking, because the reason of gravity the pointer remains vertical upwards throughout, the caliber deflection, make the pointer can the free rotation for the angle scale.
4) After the pointer is relatively fixed, the locking button is loosened, the pointer is locked, the measurer is taken down, and the rotation angle is recorded.
5) Keeping the body position of the patient still, enabling the dial to face in the same direction, measuring the rotation angle of the other end in the same method and recording; the absolute value of the difference between the two recorded rotation angles is taken, and the absolute value is the calculated tibial torsion angle.
8) The dial takes the central axis of the tibia as a reference, the middle is zero degrees, the left and the right are respectively deviated by 60 degrees, the left is a positive value, the right is a negative value, when recording and calculating a difference value, a positive sign and a negative sign are required to be taken, the absolute value of the finally obtained torsion angle is taken, and the measuring doctor judges the internal rotation or the external rotation on site.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (6)
1. A tibia rotation angle measurer comprises two clamp handles (1), and is characterized by also comprising a driving device, a measuring device and a locking device, wherein the driving device is arranged in a shell (2) and used for driving the two clamp handles (1) to open and close, and the locking device is used for acting on the measuring device;
the driving device comprises a handle and a reset mechanism arranged between the handle and the two clamping handles (1); the handle comprises a fixed handle (3) and a grab handle (4), the fixed handle (3) is formed by horizontally extending the top of the shell (2), the grab handle (4) and the fixed handle (3) are in the same plane, and the middle position of the grab handle (4) is hinged relative to the edge of the shell (2); the two clamp handles (1) are of an X-shaped structure, the clamp handles (1) are hinged relative to the shell (2), and the grab handle (4) applies downward force to the two ends of the clamp handles (1) positioned in the shell (2) through the resetting mechanism;
the measuring device comprises a rotating shaft (5), a gravity cake (6) and a pointer (7), wherein the gravity cake (6) and the pointer (7) are fixed relative to the end part of the rotating shaft (5), the gravity cake and the pointer are arranged at two ends of the rotating shaft (5) respectively on a straight line, the rotating shaft (5) is vertically arranged relative to the shell (2), and the main body of the rotating shaft (5) is rotationally connected relative to the shell (2).
2. The tibia rotation angle measurer according to claim 1, wherein the resetting mechanism includes two connecting rods (8), a spring (9), a sliding sleeve (10), and a positioning shaft (11), the positioning shaft (11) is located inside the housing (2) and is fixedly arranged in a vertical direction relative to the housing (2), the sliding sleeve (10) slides in the vertical direction relative to the positioning shaft (11), the two connecting rods (8) are respectively arranged on two sides of the positioning shaft (11), two ends of the two connecting rods are respectively hinged with the sliding sleeve (10) and an end of the clamp handle (1), the end of the clamp handle (4) penetrates through the positioning shaft (11), and the spring (9) is sleeved on the positioning shaft (11) and is arranged between the clamp handle (4) and a bottom fixing part.
3. The tibia rotation angle measuring instrument according to claim 1, wherein a positioning block (12) is arranged in the housing (2), and tension springs (13) for connecting the two clamping handles (1) are respectively arranged on two sides of the positioning block (12).
4. The shin rotation angle measurer according to claim 1, wherein the locking device comprises a locking button (14), a locking sleeve (15) and a locking block (16), the locking sleeve (15) and the locking block (16) are respectively arranged at the ends of the locking button (14) and the rotating shaft (5), the locking sleeve (15) is in contact with the locking block (16), the locking block (16) is of a convex structure, and the locking sleeve (15) is of a concave structure; the part of the locking button (14) positioned inside the shell (2) is sleeved with a compression spring (19).
5. The tibia rotation angle measurer according to claim 1, wherein an angle scale (17) is arranged on the position of the shell (2) corresponding to the pointer (7), and the angle scale (17) is covered with a transparent cover body (18).
6. A method of using the tibial rotation angle measurer of any one of claims 1 to 5, comprising the steps of,
1) Marking measuring points on a tibial tubercle plane and medial and lateral ankle planes of a patient by using a pen;
2) The elastic knob is rotated to ensure that the pointer is in a free moving state; pressing the grip to open the clamp handles at the two sides, clamping the clamp handles at the two sides on the measurement point marked on the tibial tubercle plane, loosening the grip, and clamping the clamp handles at the measurement position; adjusting the measurer on the vertical plane of the central axis of the tibia;
3) The gauge deflects, causing the pointer to rotate relative to the angle scale;
4) Screwing the locking button, locking the pointer, taking the measurer off the patient, reading the rotating angle and recording;
5) Keeping the posture of the patient still, keeping the dial orientation consistent, measuring and recording the rotation angles of the medial and lateral malleolus planes by the same method, and calculating the difference of the two recorded rotation angles to obtain an absolute value, wherein the absolute value is the calculated tibia torsion angle.
6) The dial takes the central axis of the tibia as a reference, the middle is zero degrees, the left and the right are respectively deviated by 60 degrees, the left is a positive value, the right is a negative value, when recording and calculating a difference value, a positive sign and a negative sign are required to be taken, the absolute value of the finally obtained torsion angle is taken, and the measuring doctor judges the internal rotation or the external rotation on site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211722277.6A CN115969354B (en) | 2022-12-30 | 2022-12-30 | Tibia rotation angle measurer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211722277.6A CN115969354B (en) | 2022-12-30 | 2022-12-30 | Tibia rotation angle measurer |
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| CN115969354A true CN115969354A (en) | 2023-04-18 |
| CN115969354B CN115969354B (en) | 2024-04-09 |
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| CN202211722277.6A Active CN115969354B (en) | 2022-12-30 | 2022-12-30 | Tibia rotation angle measurer |
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| CN115969354B (en) | 2024-04-09 |
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