Hip joint measuring device

Abstract

The application provides a hip joint measuring device, which comprises a first rod body, a strip-shaped hole penetrating through the first rod body along the length direction of the first rod body, the strip-shaped hole and a first scale value being arranged at intervals in the circumferential direction of the first rod body, and a connecting sleeve movably sleeved on the first rod body. A second rod body is sleeved in the connecting sleeve and the strip-shaped hole, a first rod section is provided with a second scale value along the length direction of the first rod section, a first locking member is arranged between the connecting sleeve and the first rod body, a second locking member is arranged between the first rod section and the connecting sleeve, a horizontal measuring structure is arranged at the second end of the first rod body, a sleeve part is fixedly arranged on the horizontal measuring structure and sleeved on the first rod body, the sleeve part is provided with a third scale value along the circumferential direction of the sleeve part, and an indicating part is arranged on the first rod body and arranged in correspondence with the third scale value. The technical scheme of the application effectively solves the problem that the length of the lower limb, the eccentric distance and the flexion angle cannot be synchronously measured in the related art.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a hip joint measuring device. Background Technology

[0002] Restoring lower limb length and eccentricity is a crucial technical goal for successful total hip replacement surgery. However, if the lower limbs are of unequal length or the difference in eccentricity exceeds 1 cm, approximately 80% of cases will experience varying degrees of discomfort. Shortening of the affected limb or excessive eccentricity can lead to joint laxity, weakened abduction strength, and an increased risk of hip dislocation. Conversely, excessive lengthening of the affected limb or excessive eccentricity can result in pain, limping, limited joint movement, and potentially serious adverse consequences such as pelvic tilt and scoliosis, even requiring a second surgery to correct the limb length discrepancy.

[0003] Therefore, the precise reconstruction of lower limb length and eccentricity during joint replacement surgery significantly impacts surgical outcomes. Currently, existing tools cannot simultaneously measure length and eccentricity, nor can they measure flexion angle, relying heavily on the surgeon's subjective judgment. Summary of the Invention

[0004] The main objective of this invention is to provide a hip joint measuring device to solve the problem in related technologies that it is impossible to simultaneously measure lower limb length, eccentricity, and flexion angle.

[0005] To achieve the above objectives, the present invention provides a hip joint measuring device, comprising: a first rod body, wherein a strip-shaped hole is provided on the first rod body extending along its length direction, and a first scale value is provided on the first rod body along its length direction; the strip-shaped hole and the first scale value are spaced apart in the circumferential direction of the first rod body; and a first end of the first rod body is a first measuring end; a connecting sleeve, movably sleeved on the first rod body; and a second rod body, wherein the second rod body passes through the connecting sleeve and the strip-shaped hole, and the second rod body includes a first rod segment and a second rod segment that are perpendicular to each other, and the first rod segment and the second rod segment... A rod body is vertical, a first segment has a second scale value along its length, and the free end of the second segment is a second measuring end; a first locking member is disposed between the connecting sleeve and the first rod body; a second locking member is disposed between the first segment and the connecting sleeve; a horizontal measuring structure is disposed at the second end of the first rod body, and the first rod body is rotatably disposed relative to the horizontal measuring structure; a sleeve is fixedly disposed on the horizontal measuring structure and sleeved on the first rod body, and a third scale value is disposed along its circumference; an indicator is disposed on the first rod body and is disposed corresponding to the third scale value.

[0006] Furthermore, the connecting sleeve includes a main body with a first mounting hole, and a first rod is movably inserted into the first mounting hole, with the first mounting hole and the first rod engaging in a non-rotational fit.

[0007] Furthermore, the first locking element includes a steel ball and a swing plate. The upper surface of the main body is provided with a mounting groove communicating with the first mounting hole. The swing plate is hinged to the groove wall of the mounting groove. The steel ball is movably disposed in the mounting groove. The swing plate has a locked position and an unlocked position. The swing plate swings and pushes the steel ball so that the steel ball is locked in the opening of the strip hole to lock the first rod and the connecting sleeve. The swing plate swings and avoids the steel ball so that there is a gap between the steel ball and the opening of the strip hole to unlock the first rod and the connecting sleeve.

[0008] Furthermore, the main body is provided with a first clearance groove and a second clearance groove. The first clearance groove is provided on the upper surface of the main body and located outside the steel ball. The second clearance groove is provided on the side wall of the main body and located below the swing plate. The depth direction of the first clearance groove is parallel to the axis of the first rod, and the depth direction of the first clearance groove and the depth direction of the second clearance groove are perpendicular to each other.

[0009] Furthermore, a second mounting hole is provided on the side wall of the main body, and the second rod passes through the second mounting hole. The axis of the second mounting hole is perpendicular to the axis of the first mounting hole.

[0010] Furthermore, an observation port is provided on the main body, the axis of which is perpendicular to the axis of the first mounting hole, and the axis of the observation port is perpendicular to the axis of the second mounting hole.

[0011] Furthermore, the second locking element includes a thread on the first rod segment and an adjusting nut connected to the thread. The connecting sleeve also includes a first connecting rod, a second connecting rod, a first limiting rod, and a second limiting rod. The first end of the first connecting rod is connected to the main body, the first end of the first limiting rod is connected to the second end of the first connecting rod, the first end of the second connecting rod is connected to the main body, the first end of the second limiting rod is connected to the second end of the second connecting rod, the first connecting rod and the second connecting rod are spaced apart, and the adjusting nut is located between the first limiting rod, the second limiting rod and the main body.

[0012] Furthermore, the connecting sleeve also includes a first pin, a second pin, and a third pin. The first pin is connected between the first end of the first connecting rod and the first end of the second connecting rod. The second pin is connected between the second end of the first connecting rod and the second end of the second connecting rod. The third pin is connected between the second end of the first limiting rod and the second end of the second limiting rod.

[0013] Furthermore, the horizontal measuring structure includes a third locking member, a support member, and a level. The third locking member is connected to the sleeve portion, and the support member is connected between the third locking member and the level.

[0014] Furthermore, a ball head is provided at one end of the support member facing the third locking member. The third locking member includes an openable and closable first clamping plate and a second clamping plate. A spherical cavity is provided between the first clamping plate and the second clamping plate. The ball head is located in the spherical cavity. The first end of the first clamping plate and the first end of the second clamping plate are hinged together. A locking nut is provided between the second end of the first clamping plate and the second end of the second clamping plate.

[0015] Furthermore, the end of the first rod facing the horizontal measuring structure is provided with an outer protrusion, and the bottom of the sleeve is provided with an inner protrusion. The hip joint measuring device also includes an elastic element, which is sleeved on the first rod and located between the outer and inner protrusions.

[0016] Applying the technical solution of this invention, a first rod body is provided with a strip-shaped hole and a first scale value, both arranged along the length direction of the first rod body and spaced apart. A connecting sleeve is movably fitted onto the first rod body. The second rod body includes a first rod segment and a second rod segment. The first rod segment passes through the connecting sleeve and the strip-shaped hole. The second rod segment is perpendicular to the first rod segment, and the second end of the second rod segment is a free end. A first locking member is provided between the connecting sleeve and the first rod body, and a second locking member is provided between the first rod segment and the connecting sleeve. A horizontal measuring structure is provided at the first end of the first rod body. A sleeve portion is fixedly provided on the horizontal measuring structure and fitted onto the second end of the first rod body. The first rod body can rotate relative to the sleeve portion. A third scale value is provided on the sleeve portion, and an indicator portion is provided on the first rod body and corresponding to the third scale value. Through the above-described configuration, the second rod can move and lock via a connecting sleeve, thereby altering the relative positions of the second and first rods. This allows the first end of the first rod to abut against the upper edge of the acetabulum, while the free end of the second rod abuts against the greater trochanter. At this point, the first and second locking structures lock the relative positions of the first and second rods, as well as the position of the first rod segment. The eccentricity can be determined using the first and second scale values. By rotating the first rod, the free end of the second rod abuts against the greater trochanter, allowing the flexion angle to be read from the third scale value. Furthermore, the tilt direction can be determined using a horizontal measuring device. This improves surgical precision and leads to better postoperative outcomes for the patient. Therefore, the technical solution of this application effectively solves the problem of simultaneously measuring lower limb length, eccentricity, and flexion angle in related technologies. Attached Figure Description

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

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

[0019] Figure 2 It shows Figure 1 A schematic diagram of the exploded structure of a hip joint measuring device;

[0020] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the first rod of the hip joint measuring device;

[0021] Figure 4 It shows Figure 1 A three-dimensional structural diagram of the second rod and connecting sleeve of the hip joint measuring device;

[0022] Figure 5 It shows Figure 4 A magnified view of part A;

[0023] Figure 6 It shows Figure 1 A three-dimensional structural diagram of the connecting sleeve of the hip joint measuring device;

[0024] Figure 7 It shows Figure 1 A three-dimensional structural diagram of the third locking element and sleeve portion of the hip joint measuring device;

[0025] Figure 8 It shows Figure 7 A cross-sectional schematic diagram of the third locking element and the sleeve portion;

[0026] Figure 9 It shows Figure 1 A schematic diagram of the measurement eccentricity of the hip joint measuring device.

[0027] The above figures include the following reference numerals:

[0028] 10. First rod body; 11. Strip hole; 12. First scale value; 13. Outer protruding edge; 20. Connecting sleeve; 21. Main body; 211. First mounting hole; 212. Mounting groove; 213. First clearance groove; 214. Second clearance groove; 215. Second mounting hole; 216. Observation port; 22. First connecting rod; 23. Second connecting rod; 24. First limiting rod; 25. Second limiting rod; 26. First pin; 27. Second pin; 28. Third pin; 30. Second rod body; 31. First rod segment; 31 1. Second scale value; 32. Second rod segment; 40. First locking element; 41. Steel ball; 42. Swing plate; 50. Second locking element; 51. Thread; 52. Adjusting nut; 60. Horizontal measuring structure; 61. Third locking element; 611. First clamping plate; 612. Second clamping plate; 613. Spherical cavity; 614. Locking nut; 62. Support element; 621. Ball head; 63. Level; 70. Sleeve part; 71. Third scale value; 72. Inner convex edge; 81. Indicator part; 82. Elastic element; 83. Top rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] like Figures 1 to 4 as well as Figure 9 As shown, in this embodiment, the hip joint measuring device includes: a first rod 10, a connecting sleeve 20, a second rod 30, a first locking member 40, a second locking member 50, a horizontal measuring structure 60, a sleeve portion 70, and an indicating portion 81. The first rod 10 has a strip-shaped hole 11 extending through it along its length. A first scale value 12 is also provided on the first rod 10 along its length. The strip-shaped hole 11 and the first scale value 12 are spaced apart in the circumferential direction of the first rod 10. The first end of the first rod 10 is the first measuring end. The connecting sleeve 20 is movably fitted onto the first rod 10. The second rod 30 passes through the connecting sleeve 20 and the strip-shaped hole 11. The second rod 30 includes a first rod segment 31 and a second rod segment 32 that are perpendicular to each other. The first rod segment 31 is perpendicular to the first rod 10. A second scale value 311 is provided on the first rod segment 31 along its length. The free end of the second rod segment 32 is the second measuring end. A first locking element 40 is disposed between the connecting sleeve 20 and the first rod body 10. A second locking element 50 is disposed between the first rod segment 31 and the connecting sleeve 20. A horizontal measuring structure 60 is disposed at the second end of the first rod body 10, and the first rod body 10 is rotatably disposed relative to the horizontal measuring structure 60. A sleeve portion 70 is fixedly disposed on the horizontal measuring structure 60 and sleeved on the first rod body 10, and a third scale value 71 is provided on the sleeve portion 70 along its circumference. An indicator portion 81 is disposed on the first rod body 10 and is disposed corresponding to the third scale value 71.

[0033] Applying the technical solution of this embodiment, the first rod 10 is provided with a strip hole 11 and a first scale value 12. The strip hole 11 and the first scale value 12 are arranged along the length direction of the first rod 10 and are spaced apart. The connecting sleeve 20 is movably sleeved on the first rod 10. The second rod 30 includes a first rod segment 31 and a second rod segment 32. The first rod segment 31 passes through the connecting sleeve 20 and the strip hole 11. The second rod segment 32 is arranged perpendicularly to the first rod segment 31. The second end of the second rod segment 32 is a free end. A first locking member 40 is disposed between the connecting sleeve 20 and the first rod 10, and a second locking member 50 is disposed between the first rod segment 31 and the connecting sleeve 20. A horizontal measuring structure 60 is disposed at the second end of the first rod 10. A sleeve portion 70 is fixedly disposed on the horizontal measuring structure 60 and sleeved on the second end of the first rod 10. The first rod 10 can rotate relative to the sleeve portion 70. The sleeve portion 70 is provided with a third scale value 71, and the indicator portion 81 is provided on the first rod body 10 and is provided corresponding to the third scale value 71. Through the above configuration, the second rod body 30 can be moved and locked through the connecting sleeve 20, thereby changing the relative position of the second rod body 30 and the first rod body 10. This allows the first end of the first rod body 10 to abut against the upper edge of the acetabulum, and the free end of the second rod segment 32 to abut against the greater trochanter. At this time, the relative position of the first rod body 10 and the second rod body 30, as well as the position of the first rod segment 31, are locked by the first locking member 40 and the second locking member 50, and the eccentricity can be obtained through the first scale value 12 and the second scale value 311. By rotating the first rod body 10, the free end of the second rod segment 32 abuts against the greater trochanter. At this time, the flexion angle can be read through the third scale value 71, and the tilt direction can be obtained through the horizontal measuring structure 60. This makes the operation more accurate, that is, the postoperative effect of the patient is better. Therefore, the technical solution of this embodiment effectively solves the problem of the inability to simultaneously measure eccentricity and buckling angle in related technologies.

[0034] Preferably, a pointed structure is provided at the first end of the first rod 10.

[0035] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6As shown, in this embodiment, the connecting sleeve 20 includes a main body 21, on which a first mounting hole 211 is provided. The first rod 10 is movably inserted into the first mounting hole 211, and the first mounting hole 211 and the first rod 10 are in a non-rotational fit. The first mounting hole 211 allows the first rod 10 to be inserted into the main body 21, and the non-rotational fit between the first mounting hole 211 and the first rod 10 makes it easier to read the value. Specifically, in this embodiment, the two opposite surfaces of the first rod 10 are planes, the first scale value 12 is set on one surface, and the shape of the first mounting hole 211 is adapted to the shape of the cross-section of the first rod 10.

[0036] Specifically, in this embodiment, the main body 21 is composed of three plates connected together.

[0037] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6 As shown, in this embodiment, the first locking member 40 includes a steel ball 41 and a swing plate 42. A mounting groove 212 communicating with the first mounting hole 211 is provided on the upper surface of the main body 21. The swing plate 42 is hinged to the groove wall of the mounting groove 212. The steel ball 41 is movably disposed within the mounting groove 212. The swing plate 42 has a locked position and an unlocked position. The swing plate 42 swings and pushes the steel ball 41, causing the steel ball 41 to engage with the opening of the slotted hole 11, thereby locking the first rod 10 and the connecting sleeve 20. The swing plate 42 also swings and avoids the steel ball 41, creating a gap between the steel ball 41 and the opening of the slotted hole 11, thereby unlocking the first rod 10 and the connecting sleeve 20. The swing plate 42 can push the steel ball 41, causing the steel ball 41 and the opening of the slotted hole 11 to be pressed together. This effectively locks the position of the connecting sleeve 20 and the first rod 10, and the structure is simple with good locking effect.

[0038] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6As shown, in this embodiment, the main body 21 is provided with a first clearance groove 213 and a second clearance groove 214. The first clearance groove 213 is disposed on the upper surface of the main body 21 and located outside the steel ball 41. The second clearance groove 214 is disposed on the side wall of the main body 21 and located below the swing plate 42. The depth direction of the first clearance groove 213 is parallel to the axis of the first rod 10, and the depth direction of the first clearance groove 213 and the depth direction of the second clearance groove 214 are perpendicular to each other. The structure of the first clearance groove 213 and the second clearance groove 214 is simple and easy to set. The setting of the first clearance groove 213 and the second clearance groove 214 allows the swing plate 42 to have a certain displacement space when pushing the steel ball 41, that is, it allows the swing plate 42 to move toward the side away from the steel ball 41, which makes it easier for the swing plate 42 to push the steel ball 41.

[0039] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6 As shown, in this embodiment, a second mounting hole 215 is also provided on the side wall of the main body 21. The second rod 30 passes through the second mounting hole 215, and the axis of the second mounting hole 215 is perpendicular to the axis of the first mounting hole 211. The provision of the second mounting hole 215 makes the position of the first rod segment 31 more stable.

[0040] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6 As shown, in this embodiment, the main body 21 is provided with an observation port 216. The axis of the observation port 216 is perpendicular to the axis of the first mounting hole 211, and the axis of the observation port 216 is perpendicular to the axis of the second mounting hole 215. The observation port 216 allows medical personnel to read the value on the first scale 12.

[0041] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6As shown, in this embodiment, the second locking member 50 includes a thread 51 disposed on the first rod segment 31 and an adjusting nut 52 connected to the thread 51. The connecting sleeve 20 also includes a first connecting rod 22, a second connecting rod 23, a first limiting rod 24, and a second limiting rod 25. The first end of the first connecting rod 22 is connected to the main body 21, the first end of the first limiting rod 24 is connected to the second end of the first connecting rod 22, the first end of the second connecting rod 23 is connected to the main body 21, and the first end of the second limiting rod 25 is connected to the second end of the second connecting rod 23. The first connecting rod 22 and the second connecting rod 23 are spaced apart. The adjusting nut 52 is located between the first limiting rod 24, the second limiting rod 25, and the main body 21. The structure of the adjusting nut 52 and the thread 51 is simple and easy to set. The adjusting nut 52 can adjust the length of the first rod segment 31 located on both sides of the first rod body 10 and can limit the position of the first rod segment 31. Meanwhile, due to the setting of the first limiting rod 24 and the second limiting rod 25, the adjusting nut 52 is restricted between the first limiting rod 24, the second limiting rod 25 and the main body 21, which can ensure the position of the adjusting nut 52, thereby limiting the position of the first rod segment 31.

[0042] Specifically, such as Figure 5 As shown, in this embodiment, a push rod 83 is provided at the end of the first rod segment 31 away from the second rod segment 32. The push rod 83 is inserted into the first rod segment 31, and the push rod 83 and the adjusting nut 52 are engaged in a stop.

[0043] like Figure 6 As shown, in this embodiment, the connecting sleeve 20 further includes a first pin 26, a second pin 27, and a third pin 28. The first pin 26 connects between the first end of the first connecting rod 22 and the first end of the second connecting rod 23; the second pin 27 connects between the second end of the first connecting rod 22 and the second end of the second connecting rod 23; and the third pin 28 connects between the second end of the first limiting rod 24 and the second end of the second limiting rod 25. This arrangement improves the positional stability of the first connecting rod 22, the second connecting rod 23, the first limiting rod 24, and the second limiting rod 25, thus preventing damage. The first pin 26, the second pin 27, and the third pin 28 enhance the structural strength of the first connecting rod 22, the second connecting rod 23, the first limiting rod 24, and the second limiting rod 25, thereby making the position of the adjusting nut 52 more stable.

[0044] like Figure 1 , Figure 2 , Figure 7 as well as Figure 8As shown, in this embodiment, the horizontal measuring structure 60 includes a third locking member 61, a support member 62, and a level 63. The third locking member 61 is connected to the sleeve portion 70, and the support member 62 is connected between the third locking member 61 and the level 63. The above configuration can effectively realize the measurement of the tilt direction.

[0045] like Figure 1 , Figure 2 , Figure 7 as well as Figure 8 As shown, in this embodiment, the support member 62 has a ball head 621 at one end facing the third locking member 61. The third locking member 61 includes an openable and closable first clamping plate 611 and a second clamping plate 612. A spherical cavity 613 is provided between the first clamping plate 611 and the second clamping plate 612. The ball head 621 is disposed within the spherical cavity 613. The first end of the first clamping plate 611 and the first end of the second clamping plate 612 are hinged together. A locking nut 614 is provided between the second end of the first clamping plate 611 and the second end of the second clamping plate 612. The ball head 621 is rotatably disposed within the spherical cavity 613 and can fix the first clamping plate 611 and the second clamping plate 612 by the locking nut 614, thereby stabilizing the position of the support member 62. Specifically, during measurement, by adjusting the ball head 621, the level 63 is always kept in a horizontal position. At this time, the tilt direction of the first rod 10 can be observed, thereby obtaining the required tilt direction.

[0046] like Figure 1 , Figure 2 , Figure 7 as well as Figure 8 As shown, in this embodiment, the support member 62 includes a support rod and a support frame. The first end of the support rod is connected to the ball head 621, and the second end is connected to the support frame. The support frame includes two connecting plates arranged in a cross manner. The second end of the support rod is connected to the intersection of the two connecting plates. The level 63 is disposed on the two connecting plates.

[0047] like Figure 1 , Figure 2 , Figure 7 as well as Figure 8 As shown, in this embodiment, the end of the first rod 10 facing the horizontal measuring structure 60 is provided with an outer protruding edge 13, and the bottom of the sleeve portion 70 is provided with an inner protruding edge 72. The hip joint measuring device also includes an elastic element 82, which is sleeved on the first rod 10 and located between the outer protruding edge 13 and the inner protruding edge 72. The above-mentioned arrangement can ensure the stability of the connection between the sleeve portion 70 and the first rod 10, and can achieve a certain buffering under the action of the elastic element 82.

[0048] like Figures 1 to 9 As shown, the technical solution of this embodiment has the following advantages:

[0049] The pointed structure enables repeated positioning, effectively fixing it to the iliac bone for secondary positioning; it also allows for measurement of hip joint offset and flexion angle; and the level allows for real-time monitoring of intraoperative position.

[0050] like Figures 1 to 9 As shown, the steps for using the hip joint measuring device in this embodiment are as follows:

[0051] Step 1: Make an incision, position the first rod 10 on the upper edge of the acetabulum, and adjust the connecting sleeve 20 and adjusting nut 52 so that the free end of the second rod segment 32 is located on the greater trochanter.

[0052] Step 2: Press down on the swing plate 42 to squeeze the steel ball 41, so that the steel ball 41 is completely pressed against the strip hole 11 to complete the position fixation of the first rod 10 and the second rod 30;

[0053] Step 3: Record the values ​​y and x on the first rod 10 and the second rod 30 at this time for postoperative comparison and correction;

[0054] Step 4: Adjust the support 62 to make the level 63 horizontal and balanced, then tighten the locking nut 614 to lock the ball head 621.

[0055] Step 5: Remove the hip joint measuring device from the hip joint surgery and perform a hip joint prosthesis replacement test.

[0056] Step 6: Locate the characteristic points on the upper edge of the acetabulum and the greater trochanter of the femur after replacement, adjust and place the hip joint measuring device, and record the values ​​y' and x' on the first rod 10 and the second rod 30 at this time;

[0057] Step 7: Compare the two sets of measurements before and after the procedure to calculate the postoperative vertical offset y. 偏 =y'-y, horizontal offset x 偏 =x'-x, femoral side adjustment is performed according to the preoperative plan;

[0058] Step 8: During the operation, the flexion and extension angles of the hip joint can be assessed by rotating the sleeve 70° to ensure the patient's normal range of motion;

[0059] Step 9: Install the replacement prosthesis to complete the hip replacement surgery.

[0060] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hip joint measuring device, characterized in that, include: A first rod (10) is provided with a strip hole (11) that passes through the first rod (10) along its length direction. A first scale value (12) is provided on the first rod (10) along its length direction. The strip hole (11) and the first scale value (12) are spaced apart in the circumferential direction of the first rod (10). The first end of the first rod (10) is a first measuring end. The connecting sleeve (20) is movably fitted onto the first rod (10); The second rod (30) passes through the connecting sleeve (20) and the strip hole (11). The second rod (30) includes a first rod segment (31) and a second rod segment (32) that are perpendicular to each other. The first rod segment (31) is perpendicular to the first rod (10). The first rod segment (31) has a second scale value (311) along its length direction. The free end of the second rod segment (32) is the second measuring end. A first locking element (40) is disposed between the connecting sleeve (20) and the first rod (10); The second locking element (50) is disposed between the first rod segment (31) and the connecting sleeve (20); A horizontal measuring structure (60) is disposed at the second end of the first rod (10), and the first rod (10) is rotatably disposed relative to the horizontal measuring structure (60); A sleeve (70) is fixedly mounted on the horizontal measuring structure (60) and sleeved on the first rod (10). The sleeve (70) has a third scale value (71) along its circumference. An indicator (81) is provided on the first rod (10) and is provided corresponding to the third scale value (71); The connecting sleeve (20) includes a main body (21), on which a first mounting hole (211) is provided, and the first rod (10) is movably inserted into the first mounting hole (211), and the first mounting hole (211) and the first rod (10) are anti-rotationally engaged; The first locking member (40) includes a steel ball (41) and a swing plate (42). The upper surface of the main body (21) is provided with a mounting groove (212) communicating with the first mounting hole (211). The swing plate (42) is hinged to the groove wall of the mounting groove (212). The steel ball (41) is movably disposed in the mounting groove (212). The swing plate (42) has a locking position and an unlocking position. The swing plate (42) swings and pushes the steel ball (41) so that the steel ball (41) is stuck in the opening of the strip hole (11) to lock the first rod body (10) and the connecting sleeve (20). The swing plate (42) swings and avoids the steel ball (41) so that there is a gap between the steel ball (41) and the opening of the strip hole (11) to unlock the first rod body (10) and the connecting sleeve (20).

2. The hip joint measuring device according to claim 1, characterized in that, The main body (21) is provided with a first clearance groove (213) and a second clearance groove (214). The first clearance groove (213) is provided on the upper surface of the main body (21) and located outside the steel ball (41). The second clearance groove (214) is provided on the side wall of the main body (21) and located below the swing plate (42). The depth direction of the first clearance groove (213) is parallel to the axis of the first rod (10), and the depth direction of the first clearance groove (213) and the depth direction of the second clearance groove (214) are perpendicular to each other.

3. The hip joint measuring device according to claim 1, characterized in that, The main body (21) is also provided with a second mounting hole (215) on its side wall. The second rod (30) passes through the second mounting hole (215). The axis of the second mounting hole (215) is perpendicular to the axis of the first mounting hole (211).

4. The hip joint measuring device according to claim 3, characterized in that, The main body (21) is provided with an observation port (216), the axis of the observation port (216) is perpendicular to the axis of the first mounting hole (211), and the axis of the observation port (216) is perpendicular to the axis of the second mounting hole (215).

5. The hip joint measuring device according to claim 1, characterized in that, The second locking member (50) includes a thread (51) provided on the first rod segment (31) and an adjusting nut (52) connected to the thread (51). The connecting sleeve (20) also includes a first connecting rod (22), a second connecting rod (23), a first limiting rod (24), and a second limiting rod (25). The first end of the first connecting rod (22) is connected to the main body (21). The first end of the first limiting rod (24) is connected to the second end of the first connecting rod (22). The first end of the second connecting rod (23) is connected to the main body (21). The first end of the second limiting rod (25) is connected to the second end of the second connecting rod (23). The first connecting rod (22) and the second connecting rod (23) are spaced apart. The adjusting nut (52) is located between the first limiting rod (24), the second limiting rod (25), and the main body (21).

6. The hip joint measuring device according to claim 5, characterized in that, The connecting sleeve (20) further includes a first pin (26), a second pin (27) and a third pin (28). The first pin (26) is connected between the first end of the first connecting rod (22) and the first end of the second connecting rod (23). The second pin (27) is connected between the second end of the first connecting rod (22) and the second end of the second connecting rod (23). The third pin (28) is connected between the second end of the first limiting rod (24) and the second end of the second limiting rod (25).

7. The hip joint measuring device according to any one of claims 1 to 6, characterized in that, The level measuring structure (60) includes a third locking member (61), a support member (62), and a level (63). The third locking member (61) is connected to the sleeve portion (70), and the support member (62) is connected between the third locking member (61) and the level (63).

8. The hip joint measuring device according to claim 7, characterized in that, The support member (62) has a ball head (621) at one end facing the third locking member (61). The third locking member (61) includes an openable and closable first clamping plate (611) and a second clamping plate (612). A spherical cavity (613) is provided between the first clamping plate (611) and the second clamping plate (612). The ball head (621) is located in the spherical cavity (613). The first end of the first clamping plate (611) and the first end of the second clamping plate (612) are hinged together. A locking nut (614) is provided between the second end of the first clamping plate (611) and the second end of the second clamping plate (612).

9. The hip joint measuring device according to any one of claims 1 to 6, characterized in that, The first rod (10) has an outer protrusion (13) at the end facing the horizontal measuring structure (60), and the sleeve (70) has an inner protrusion (72) at the bottom. The hip joint measuring device also includes an elastic element (82), which is sleeved on the first rod (10) and located between the outer protrusion (13) and the inner protrusion (72).

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