Positioning and guiding device for front rake angle and abduction angle in hip replacement
By designing the hip aplomb and abduction angle positioning guide device in hip arthroplasty surgery, using mirror symmetry technology and airbags and other components, the problem of difference in angle measurement of acetabular prosthesis is solved, and the accuracy of the hip prosthesis is achieved Angle mounting and balance improve hip function and survival after replacement.
Patent Information
- Application Number
- CN202411275014.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2024-12-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In hip arthroplasty, there are differences in measurements of anterior inclination and abduction angles of acetabular prosthesis, which makes it difficult to locate the prosthesis and the prior art is difficult to accurately measure and maintain angular balance.
A guide device including a hip joint forward angle positioning assembly and an abduction angle positioning assembly is designed to project angle data through mirror symmetry, using semi-annular and arc-shaped angle rulers, target blocks, sliders, traction rods, airbags, etc. Components that enable projection and adjustment of angle data to ensure balance and symmetry of the anterior inclination and abduction angle of the hip joint.
It effectively solves the difficulty of angular positioning in hip replacement, ensures appropriate angle installation of hip prosthesis, reduces the risk of dislocation, impact and wear, and improves hip function and survival after replacement.
Smart Images
Figure CN119112449A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of hip replacement auxiliary instruments, and in particular to a positioning guide device for anteversion angle and abduction angle in hip replacement surgery. Background Art
[0002] Hip replacement, also called total hip arthroplasty, is an option if hip pain is interfering with daily activities and nonsurgical treatments have not worked or are no longer effective. In a hip replacement, the surgeon removes the damaged part of the hip joint and replaces it with a part made of metal, ceramic, or hard plastic. This artificial joint (prosthesis) helps relieve pain and can improve the function of the hip joint.
[0003] The angle of the acetabular prosthesis is an important factor affecting the function and survival rate after total hip replacement. Good prosthesis positioning can reduce the risk of dislocation, impact and wear of artificial total hip joints and gold-on-gold surface hip prostheses. Under different circumstances, there are three main ways to measure the angle of the acetabular prosthesis, such as the abduction angle and anteversion angle, namely intraoperative measurement, anatomical measurement and imaging measurement. The standard angle measurement of the acetabular prosthesis is generally achieved by using a postoperative supine pelvic radiograph, but the abduction angle and anteversion angle obtained thereby will differ from the intraoperative measurement values. The reason is that, firstly, the measurement method of the anteversion angle and the abduction angle with reference to the pelvis is different, and secondly, the coordinate system with reference to the pelvic position is also different. Therefore, the technicians in this field, in combination with the above problems, propose a positioning guide device for the anteversion angle and the abduction angle during hip replacement. Summary of the invention
[0004] In view of the defect of difficulty in positioning the anteversion angle and abduction angle of the hip joint in hip replacement surgery mentioned in the above background technology, a technical solution of a guide device for positioning the anteversion angle and abduction angle in hip replacement surgery is provided.
[0005] It comprises a hip joint anteversion angle positioning component, a hip joint abduction angle positioning component is arranged on the back surface of the hip joint anteversion angle positioning component, and two leg restriction components which are arranged in a mirror-symmetrical manner on the left and right are arranged between the hip joint anteversion angle positioning component and the hip joint abduction angle positioning component;
[0006] The hip joint anteversion angle positioning assembly comprises a vertically arranged semi-circular angle scale, two target blocks movably arranged inside the semi-circular angle scale, and a fixing rod connected to the bottom surface of the target block, and the bottom end of the fixing rod is connected to a connecting rod, and two left-right symmetrically arranged cross bars are fixed to the bottom surface of the semi-circular angle scale;
[0007] The hip joint abduction angle positioning assembly comprises two arc angle scales placed horizontally and vertically connected to the semi-circular angle scale, a slider movably arranged inside the arc angle scale, and a traction rod fixed on the front surface of the slider;
[0008] The leg restraint assembly includes a sleeve, a tubular airbag fixed in the inner cavity of the sleeve, and an air pump fixed on the outer ring surface of the sleeve, and bearings are provided on the front and rear sides of the outer ring of the sleeve, the bottom surfaces of the bearings are fixedly connected to the upper surfaces of the traction rods, and the top surface of the outer ring of the sleeve is fixedly connected to the bottom end of the connecting rod.
[0009] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, the semi-circular angle scale is semi-circular, and a semi-circular track is opened inside the semi-circular angle scale for the movement of the target block; two angle values are etched on the front surface of the semi-circular angle scale, and the angle values are arranged in left-right mirror symmetry with the central axis of the semi-circular angle scale as the base point.
[0010] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, two bases are fixed to the bottom surface of the semi-circular angle scale, and a layer of silicone anti-slip pad is fixed to the bottom surface of the base by adhesive, wherein a rotating shaft is fixed to each end of the cross bar close to each other, and the top end of the rotating shaft is rotatably connected to the front side of the bottom surface of the traction rod.
[0011] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, a partition is fixed at the midpoint of the semicircular track inside the semicircular angle scale, and the bottom end of the front surface of the fixing rod and the top end of the rear surface of the connecting rod are in contact with each other, a locking bolt passes through the overlapping position of the fixing rod and the connecting rod, and nuts are screwed on the front and rear sections of the locking bolt.
[0012] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, the arc angle scales are arranged in left-right mirror symmetry with the central axis of the semi-circular angle scale as the base point, and the front end of the arc angle scale is fixedly connected to the rear surface of the semi-circular angle scale, wherein an arc track is opened inside the arc angle scale for the slider to perform circular sliding motion along the arc of the arc angle scale.
[0013] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, the upper surface of the arc-shaped angle scale is etched with two angle values symmetrically arranged on the left and right, and the slider and the traction rod are both arranged in a left-right mirror-symmetrical manner with the central axis of the semi-circular angle scale as the base point.
[0014] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, the two sleeves are arranged in left-right mirror symmetry with the central axis of the semi-circular angle scale as the base point, and the axis of the sleeve is kept parallel to the horizontal plane.
[0015] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, a chamber for its expansion is opened inside the tubular airbag, and the inner surface of the tubular airbag wraps the human thigh or calf, and the outer ring surface of the tubular airbag is fixedly connected to the inner ring side wall of the sleeve by an adhesive.
[0016] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, the side surface of the air pump away from each other is fixedly connected to the outer ring surface of the sleeve on the side close to each other, and the air supply port of the air pump is fixedly connected to the trachea through a pipe joint, and the end of the trachea away from the air pump passes through the inner cavity of the tubular airbag.
[0017] In the above-mentioned technical solution of the anteversion angle and abduction angle positioning guide device in hip replacement surgery, preferably, the inside of the sleeve and the tubular airbag are both provided with through holes for the air supply tube to pass through, and the inside of the through holes are filled and sealed with sealant.
[0018] It can be seen from the above technical scheme that the present invention provides a positioning guide device for the anteversion angle and abduction angle in hip replacement surgery. Compared with the prior art, the present invention has the following beneficial effects:
[0019] In the technical solution of the present invention, by setting the anteversion angle positioning component and the abduction angle positioning component to cooperate with each other, the anteversion angle and abduction angle data of the hip joint on one side are used as a reference, and the angle data are projected onto the hip joint on the other side in a mirror-symmetrical manner, so that the anteversion angle and abduction angle data of the replaced hip joint are balanced and symmetrical with the hip joint on the other side, and help find the appropriate angle during the replacement process. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 A schematic diagram of a positioning guide mechanism for the anteversion angle and abduction angle of the hip joint;
[0022] Figure 2 A schematic diagram of the hip anteversion positioning assembly;
[0023] Figure 3 Schematic diagram of positioning components for hip abduction angle;
[0024] Figure 4 A schematic diagram of the leg restraint assembly.
[0025] Attached Figure 1 -Attached Figure 4 The corresponding relationship of the parts is as follows:
[0026] 1. Hip joint anteversion angle positioning assembly; 11. Semi-circular angle scale; 12. Target block; 13. Fixing rod; 14. Locking bolt; 15. Connecting rod; 16. Rotating shaft; 17. Cross bar; 18. Base; 2. Hip joint abduction angle positioning assembly; 21. Arc angle scale; 22. Sliding block; 23. Traction rod; 3. Leg restriction assembly; 31. Sleeve; 32. Bearing; 33. Tubular airbag; 34. Trachea; 35. Air pump. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0028] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.
[0029] Embodiment: A preferred technical solution for a positioning guide device for the anteversion angle and abduction angle in hip replacement surgery:
[0030] Refer to the instruction manual Figure 1 As shown; it includes a hip joint anteversion angle positioning component 1, a hip joint abduction angle positioning component 2 is arranged on the back surface of the hip joint anteversion angle positioning component 1, and two leg restriction components 3 that are arranged in a mirror-symmetrical manner on the left and right are arranged between the hip joint anteversion angle positioning component 1 and the hip joint abduction angle positioning component 2;
[0031] Refer to the instruction manual Figure 2 As shown; the hip joint anteversion angle positioning assembly 1 includes a vertically arranged semi-circular angle scale 11, two target blocks 12 movably arranged inside the semi-circular angle scale 11, and a fixing rod 13 connected to the bottom surface of the target block 12, and the bottom end of the fixing rod 13 is connected to a connecting rod 15, and the bottom surface of the semi-circular angle scale 11 is fixed with two left-right symmetrically arranged cross bars 17;
[0032] Refer to the instruction manual Figure 3 As shown; the hip joint abduction angle positioning assembly 2 includes two arc angle scales 21 placed horizontally and vertically connected to the semi-circular angle scale 11, a slider 22 movably arranged inside the arc angle scale 21, and a traction rod 23 fixed to the front surface of the slider 22;
[0033] Refer to the instruction manual Figure 4 As shown; the leg restraint assembly 3 includes a sleeve 31, a tubular airbag 33 fixed in the inner cavity of the sleeve 31, and an air pump 35 fixed on the outer ring surface of the sleeve 31, and bearings 32 are provided on the front and rear sides of the outer ring of the sleeve 31, the bottom surfaces of the bearings 32 are respectively fixedly connected to the upper surfaces of the traction rod 23, and the top surface of the outer ring of the sleeve 31 is fixedly connected to the bottom end of the connecting rod 15.
[0034] Refer to the instruction manual Figure 2 As shown; the semi-circular angle scale 11 is semi-circular, and a semi-circular track is opened inside the semi-circular angle scale 11 for the target block 12 to move; two angle values are etched on the front surface of the semi-circular angle scale 11, and the angle values are set in left-right mirror symmetry with the central axis of the semi-circular angle scale 11 as the base point.
[0035] Refer to the instruction manual Figure 2 As shown; two bases 18 are fixed to the bottom surface of the semi-circular angle scale 11, and a layer of silicone anti-skid pad is fixed to the bottom surface of the base 18 by adhesive, wherein a rotating shaft 16 is fixed to the ends of the cross bars 17 close to each other, and the top of the rotating shaft 16 is rotatably connected to the front side of the bottom surface of the traction rod 23. A partition is fixed to the midpoint of the semicircular track inside the semi-circular angle scale 11, and the bottom end of the front side surface of the fixing rod 13 is in contact with the top end of the rear side surface of the connecting rod 15. A locking bolt 14 is passed through the overlapping position of the fixing rod 13 and the connecting rod 15, and nuts are screwed on the front and rear sections of the locking bolt 14.
[0036] Refer to the instruction manual Figure 3 As shown in the figure, the arc angle scale 21 is set in a left-right mirror symmetric manner with the central axis of the semi-circular angle scale 11 as the base point, and the front end of the arc angle scale 21 is fixedly connected to the rear surface of the semi-circular angle scale 11, wherein an arc track is provided inside the arc angle scale 21 for the slider 22 to slide in an arc along the arc of the arc angle scale 21. Two left-right symmetrical angle values are etched on the upper surface of the arc angle scale 21, and the slider 22 and the traction rod 23 are set in a left-right mirror symmetric manner with the central axis of the semi-circular angle scale 11 as the base point.
[0037] Refer to the instruction manual Figure 4As shown; the two sleeves 31 are both mirror-symmetrically arranged with the central axis of the semi-circular angle scale 11 as the base point, and the axis of the sleeve 31 is kept parallel to the horizontal plane. The inside of the tubular airbag 33 is provided with a chamber for its expansion, and the inner surface of the tubular airbag 33 wraps the thigh or calf of the human body, and the outer surface of the tubular airbag 33 is fixedly connected to the inner side wall of the sleeve 31 by an adhesive; the side surface of the air pump 35 away from each other is fixedly connected to the outer surface of the sleeve 31 on the side close to each other, and the air delivery port of the air pump 35 is fixedly connected to the air pipe 34 through a pipe joint, and the end of the air pipe 34 away from the air pump 35 penetrates into the inner cavity of the tubular airbag 33; the inside of the sleeve 31 and the tubular airbag 33 are both provided with a through hole through which the air supply pipe 34 penetrates, and the inside of the through hole is filled and sealed with a sealant.
[0038] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:
[0039] When positioning the hip joint abduction angle, the patient's left and right legs are placed in the sleeves 31 on both sides respectively, and the air pump 35 and the air tube 34 are used to supply air to the tubular airbag 33 to expand it and then wrap the legs. At the same time, the locking bolt 14 between the fixing rod 13 and the connecting rod 15 is loosened. After the two legs are closed together, the leg that does not need to be replaced moves in an arc along the arc line of the arc angle scale 21, and the angle value on the arc angle scale 21 at the current position is recorded. Then the hip joint to be operated on is cut off and the artificial hip joint is placed in. At this time, the current leg is moved to make its angle consistent with the recorded angle data, and the artificial part is placed in accordance with the hip joint incision so that the abduction angle of the hip joint is consistent with the angle in the normal state.
[0040] Before positioning the abduction angle, the patient's non-operated leg is straightened and the toes are kept in an upward vertical posture. After the patient relaxes naturally, the leg moves in an axial arc and drives the target block 12 to move, and the current data is recorded. During the operation, due to the effect of anesthesia, the operated leg will also relax naturally. The target block 12 on the other side is swung to the same angle position according to the control data, and the leg to be operated is pulled to move. The artificial component is placed in the control hip joint incision so that the anteversion angle of the hip joint is consistent with the angle in the normal state.
[0041] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.
Claims
1. A device for positioning the anteversion angle and abduction angle in hip replacement surgery, comprising a hip anteversion angle positioning component (1), characterized in that: A hip joint abduction angle positioning component (2) is arranged on the back surface of the hip joint anteversion angle positioning component (1), and two leg restriction components (3) arranged in a mirror-symmetrical manner on the left and right are arranged between the hip joint anteversion angle positioning component (1) and the hip joint abduction angle positioning component (2); The hip joint anteversion angle positioning assembly (1) comprises a vertically arranged semi-annular angle scale (11), two target blocks (12) movably arranged inside the semi-annular angle scale (11), and a fixing rod (13) connected to the bottom surface of the target block (12), wherein the bottom end of the fixing rod (13) is connected to a connecting rod (15), and two left-right symmetrically arranged cross bars (17) are fixed to the bottom surface of the semi-annular angle scale (11); The hip joint abduction angle positioning assembly (2) comprises two arc angle scales (21) placed horizontally and vertically connected to the semi-circular angle scale (11), a slider (22) movably arranged inside the arc angle scale (21), and a traction rod (23) fixed on the front side surface of the slider (22); The leg restraint assembly (3) comprises a sleeve (31), a tubular air bag (33) fixed in the inner cavity of the sleeve (31), and an air pump (35) fixed on the outer ring surface of the sleeve (31), and bearings (32) are provided on the front and rear sides of the outer ring of the sleeve (31), the bottom surfaces of the bearings (32) are respectively fixedly connected to the upper surfaces of the traction rod (23), and the top surface of the outer ring of the sleeve (31) is fixedly connected to the bottom end of the connecting rod (15).
2. The device for positioning the anteversion angle and abduction angle in hip replacement according to claim 1, characterized in that: The semi-circular angle scale (11) is semi-circular in shape, and a semi-circular track is provided inside the semi-circular angle scale (11) for the target block (12) to move; two angle values are etched on the front surface of the semi-circular angle scale (11), and the angle values are arranged in a left-right mirror-symmetrical manner with the central axis of the semi-circular angle scale (11) as a base point.
3. The device for positioning the anteversion angle and abduction angle in hip replacement according to claim 1, characterized in that: Two bases (18) are fixed to the bottom surface of the semi-circular angle scale (11), and a layer of silicone anti-skid pad is fixed to the bottom surface of the base (18) by adhesive, wherein a rotating shaft (16) is fixed to each end of the cross bar (17) close to each other, and the top end of the rotating shaft (16) is rotatably connected to the front side of the bottom surface of the traction rod (23).
4. The device for positioning the anteversion angle and abduction angle in hip replacement according to claim 1, characterized in that: A partition is fixed at the midpoint of the semicircular track inside the semicircular angle scale (11), and the bottom end of the front surface of the fixing rod (13) and the top end of the rear surface of the connecting rod (15) are in contact with each other. A locking bolt (14) passes through the overlapping position of the fixing rod (13) and the connecting rod (15), and nuts are screwed on the front section and the rear section of the locking bolt (14).
5. The device for positioning the anteversion angle and abduction angle in hip replacement surgery according to claim 1, characterized in that: The arc-shaped angle scales (21) are all arranged in a left-right mirror-symmetrical manner with the central axis of the semi-circular angle scale (11) as a base point, and the front end of the arc-shaped angle scale (21) is fixedly connected to the rear surface of the semi-circular angle scale (11), wherein an arc-shaped track is provided inside the arc-shaped angle scale (21) for the slider (22) to perform circular sliding motion along the arc of the arc-shaped angle scale (21).
6. The device for positioning the anteversion angle and abduction angle in hip replacement according to claim 1, characterized in that: The upper surface of the arc-shaped angle scale (21) is etched with two angle values symmetrically arranged on the left and right, and the slider (22) and the traction rod (23) are arranged in a mirror-symmetrical manner on the left and right with the central axis of the semi-circular angle scale (11) as the base point.
7. The device for positioning the anteversion angle and abduction angle in hip replacement according to claim 1, characterized in that: The two sleeves (31) are both arranged in left-right mirror symmetry with the central axis of the semi-circular angle scale (11) as the base point, and the axes of the sleeves (31) are both kept parallel to the horizontal plane.
8. The device for positioning the anteversion angle and abduction angle in hip replacement surgery according to claim 1, characterized in that: The tubular airbag (33) has a chamber for expansion inside, and the inner surface of the tubular airbag (33) wraps around the thigh or calf of the human body. The outer ring surface of the tubular airbag (33) is fixedly connected to the inner ring side wall of the sleeve (31) by an adhesive.
9. The device for positioning anteversion angle and abduction angle in hip replacement surgery according to claim 1, characterized in that: The side surface of the air pump (35) that is away from each other is fixedly connected to the outer ring surface of the sleeve (31) that is close to each other, and the air delivery port of the air pump (35) is fixedly connected to the air pipe (34) through a pipe joint, and the end of the air pipe (34) that is away from the air pump (35) penetrates into the inner cavity of the tubular air bag (33).
10. The device for positioning anteversion angle and abduction angle in hip replacement according to claim 1, characterized in that: The sleeve (31) and the tubular airbag (33) are both provided with through holes through which the air supply pipe (34) passes, and the interior of the through holes is filled and sealed with a sealant.