Angular positioning device

Abstract

The application provides an angle positioning device, comprising a base rod, an abduction indication structure arranged at a first end of the base rod, the abduction indication structure being swingably arranged relative to the base rod, a first scale being arranged on the abduction indication structure, and a mounting portion being arranged on the abduction indication structure and being detachably matched with an implant tool, an anteversion indication structure comprising a rotating seat and an indication rod, the rotating seat being fixedly arranged at a second end of the base rod, the indication rod being swingably arranged relative to the rotating seat, an oscillation axis of the abduction indication structure being perpendicular to an oscillation axis of the anteversion indication structure, and a second scale being arranged on the rotating seat, wherein an axis of the base rod is parallel to an oscillation plane of the indication rod or is located in the oscillation plane of the indication rod. The technical scheme of the application effectively solves the problem in the related art that a hip cup implantation auxiliary tool can only realize single angle determination, and thus cannot better adapt to different pelvis postures.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an angle positioning device. Background Technology

[0002] Total hip arthroplasty is a reconstructive surgery that replaces the hip joint with an artificial hip prosthesis to restore joint movement. In artificial hip arthroplasty, the placement angle of the acetabular cup is one of the decisive factors in reconstructing a good center of hip joint rotation and ensuring postoperative stability. According to clinical data, the medically accepted safe placement angle range for the acetabular cup is: pelvic anteversion angle 20°±10°, abduction angle 40°±10°; among which, the placement angles are mainly concentrated at anteversion angle 20°±5° and abduction angle 40°±5°.

[0003] Currently, the angle of the artificial acetabulum during surgery is often determined visually by the doctor's experience. The installation angle is often difficult to determine accurately, which seriously affects the operation. Although there are some acetabular cup implantation aids on the market to help doctors determine the placement angle of the acetabular cup, they can only achieve the identification and use of a single angle, such as only supporting placement with an abduction angle of 45°, which cannot better adapt to patients with different pelvic postures. Summary of the Invention

[0004] The main objective of this invention is to provide an angle positioning device to solve the problem that acetabular cup implantation aids in related technologies can only determine a single angle, thus failing to better adapt to different pelvic postures.

[0005] To achieve the above objectives, the present invention provides an angle positioning device, comprising: a base rod; an outward pointing structure disposed at a first end of the base rod, the outward pointing structure being swayably disposed relative to the base rod, the outward pointing structure having a first scale, and the outward pointing structure also having a mounting part detachably cooperating with an implantation tool; and a forward tilting pointing structure, the forward tilting pointing structure comprising a rotating seat and an pointing rod, the rotating seat being fixedly disposed at a second end of the base rod, the pointing rod being swayably disposed relative to the rotating seat, the swing axis of the outward pointing structure being perpendicular to the swing axis of the forward tilting pointing structure, the rotating seat having a second scale, wherein the axis of the base rod is parallel to the swing plane of the pointing rod or located within the swing plane of the pointing rod.

[0006] Furthermore, the rotating seat includes a seat body, a turntable, and a cover body. The seat body is connected to the base rod, and the cover body is placed on the seat body. The second scale is set on the surface of the cover body. The turntable is rotatably disposed between the seat body and the cover body. The indicator rod is linked with the turntable, and the turntable is provided with an indicator element that cooperates with the second scale.

[0007] Furthermore, the cover is provided with an arc-shaped groove, the indicator includes a protrusion, the indicator rod is provided with a through hole, the protrusion is inserted into the through hole and the arc-shaped groove in sequence, and the first scale is set on the side of the arc-shaped groove.

[0008] Furthermore, the rotating seat also includes an elastic element and a first top bead. Multiple first limiting grooves are spaced apart on the side wall of the turntable. The elastic element and the first top bead are disposed between the side wall of the cover and the side wall of the turntable. The first top bead is adjustablely disposed in one of the multiple first limiting grooves.

[0009] Furthermore, a connecting post is provided on the base, and a connecting hole is provided at the end of the indicator rod near the base rod, into which the connecting post is inserted.

[0010] Furthermore, the second end of the base rod is provided with a wedge-shaped insertion part, and the base body is provided with a dovetail groove, and the wedge-shaped insertion part and the dovetail groove are inserted and matched.

[0011] Furthermore, the outward indication structure includes an adjustment seat and a locking member. The adjustment seat includes a first connecting part that is swayingly connected to the first end of the base rod and a second connecting part that is connected to the first connecting part. A first scale is set on the outer surface of the first connecting part. The second connecting part includes a first connecting arm and a second connecting arm that are spaced apart. The locking member includes a first locking plate, a second locking plate, and a driving member. The first locking plate and the second locking plate are both located between the first connecting arm and the second connecting arm. The first locking plate is connected to the first connecting arm. The driving member is set on the second connecting arm and drives the second locking plate to move toward or away from the first locking plate.

[0012] Furthermore, the first connecting part also includes a third connecting arm, the first end of the base rod is sway-connected to the third connecting arm, and the first scale is set on the outer surface of the third connecting arm.

[0013] Furthermore, the outward indication structure also includes a positioning element and a limiting shaft. The positioning element is fixedly installed at the connection between the third connecting arm and the second connecting part. The limiting shaft is rotatably and adjustablely installed through the third connecting arm. Multiple grooves are spaced apart on the side wall of the limiting shaft. The positioning element is adjustablely installed in one of the multiple grooves. A second limiting groove is provided on the side wall of the limiting shaft. The second limiting groove and the multiple grooves are arranged opposite to each other. A protrusion is provided at the first end of the base rod. The protrusion is inserted into the second limiting groove.

[0014] Furthermore, the positioning component includes a spring and a second top bead. The spring includes a fixed plate, a bent plate, and an abutment plate. The bent plate is connected between the fixed plate and the abutment plate. The abutment plate and the fixed plate are arranged in parallel. The length of the fixed plate is greater than the length of the abutment plate. The second top bead is disposed on the abutment plate. The fixed plate is fixed to the connection between the third connecting arm and the second connecting part by fasteners.

[0015] Furthermore, the protrusion is provided with a notch, the limiting shaft is provided with a through hole, the through hole penetrates the second limiting groove, and the outward indication structure also includes a pin, which is inserted into the through hole and the notch.

[0016] Furthermore, the third connecting arm includes a first clamping arm and a second clamping arm spaced apart. The first clamping arm is provided with a first mounting hole, and the second clamping arm is provided with a second mounting hole. The limiting shaft is inserted into the first mounting hole and the second mounting hole.

[0017] Furthermore, the first clamping arm is provided with a third mounting hole, and the second clamping arm is provided with a fourth mounting hole. The third mounting hole is located at the end of the first mounting hole away from the first connecting arm, and the fourth mounting hole is located at the end of the second mounting hole away from the third connecting arm. The base rod is provided with a fifth mounting hole. The fifth mounting hole and the protrusion are spaced apart along the length of the base rod. The outward indication structure also includes a rotating pin, which is inserted into the third mounting hole, the fifth mounting hole and the fourth mounting hole in sequence.

[0018] Furthermore, the first locking plate includes a first plate body and a second plate body, with a first obtuse angle between the first plate body and the second plate body. The second locking plate includes a third plate body and a fourth plate body, with a second obtuse angle between the third plate body and the fourth plate body. The openings of the first obtuse angle and the second obtuse angle are arranged opposite to each other. Anti-slip parts are provided on the inner walls of the first plate body, the second plate body, the third plate body, and the fourth plate body.

[0019] According to the technical solution of this invention, the angle positioning device includes a base rod and an outward-pointing indicator structure and a forward-pointing indicator structure disposed at both ends of the base rod. Specifically, the outward-pointing indicator structure is disposed at the first end of the base rod and is swayably disposed relative to the base rod. The outward-pointing indicator structure is provided with a first scale and a mounting part that is detachably coupled with the implantation tool. The mounting part allows the angle positioning device to be fixed on the implantation tool, thereby making the angle positioning device more stable. The forward-pointing indicator structure includes a rotating base and an indicator rod. The rotating base is fixedly disposed at the second end of the base rod, and the indicator rod is swayably disposed relative to the rotating base. The swing axis of the outward-pointing indicator structure is perpendicular to the swing axis of the forward-pointing indicator structure. The rotating base is provided with a second scale. The axis of the base rod is parallel to the swing plane of the indicator rod or is located within the swing plane of the indicator rod. With the above-described configuration, the angle positioning device can simultaneously measure both the anteversion and abduction angles. This allows a single tool to measure both angles, simplifying the measurement process. Furthermore, since the swing axis of the abduction indicator is perpendicular to the swing axis of the anteversion indicator—meaning both indicators are located at the ends of the base rod and extend outwards—the angle positioning device becomes more compact and easier to place. Therefore, the technical solution of this application effectively solves the problem in related technologies where acetabular cup implantation aids can only determine a single angle, thus failing to better adapt to different pelvic postures. Attached Figure Description

[0020] 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:

[0021] Figure 1 A top view schematic diagram of an embodiment of the angle positioning device according to the present invention is shown;

[0022] Figure 2 It shows Figure 1 A side view of the angle positioning device;

[0023] Figure 3 It shows Figure 1 A three-dimensional perspective view of the angle positioning device;

[0024] Figure 4 It shows Figure 3 A partial enlarged view of point A on the angle positioning device;

[0025] Figure 5 It shows Figure 3 A partial enlarged view of point B on the angle positioning device;

[0026] Figure 6It shows Figure 1 A cross-sectional schematic diagram of the angle positioning device;

[0027] Figure 7 It shows Figure 6 A cross-sectional schematic diagram of the forward tilt indicator structure of the angle positioning device;

[0028] Figure 8 It shows Figure 1 Front view schematic diagram of the base rod of the angle positioning device;

[0029] Figure 9 It shows Figure 1 An exploded view of the outward indication structure of the angle positioning device;

[0030] Figure 10 It shows Figure 1 An exploded structural diagram of the forward tilt indicator structure of the angle positioning device;

[0031] Figure 11 It shows Figure 10 A three-dimensional structural diagram of the adjustment seat for the forward tilt indicator structure;

[0032] Figure 12 It shows Figure 10 A three-dimensional structural diagram of the limiting shaft of the forward tilting indicator structure;

[0033] Figure 13 It shows Figure 10 A three-dimensional structural diagram of the spring piece of the forward-tilting indicator structure;

[0034] Figure 14 It shows Figure 1 A three-dimensional structural diagram of an angle positioning device with a level installed on it;

[0035] Figure 15 It shows Figure 1 An angle positioning device is installed on the implantation tool (front view diagram);

[0036] Figure 16 It shows Figure 14 The angle positioning device is installed on the implantation tool. (Top view diagram)

[0037] The above figures include the following reference numerals:

[0038] 10. Base rod; 11. Wedge-shaped insertion part; 12. Protrusion; 121. Notch; 20. Outward extension indicator structure; 21. Adjustment seat; 211. First connecting part; 2111. Third connecting arm; 21111. First clamping arm; 21112. Second clamping arm; 212. Second connecting part; 2121. First connecting arm; 2122. Second connecting arm; 22. Locking element; 221. First locking plate; 2211. First plate body; 2212. Second plate body; 222. Second locking plate; 2221. Third plate body; 2222. Fourth plate body; 223. Driving element; 23. Positioning element; 231. Spring piece; 2311. Fixing plate; 2312. Bending plate; 2313. Abutment plate; 232. 24. Limiting shaft; 241. Groove; 242. Second limiting groove; 243. Through hole; 25. Pin; 26. Rotating pin; 31. First scale; 32. Second scale; 40. Forward tilting indicator structure; 41. Rotating seat; 411. Seat body; 4111. Connecting column; 4112. Dovetail groove; 412. Turntable; 4121. Indicator; 4122. First limiting groove; 413. Cover; 4131. Arc groove; 414. Elastic element; 415. First top ball; 42. Indicator rod; 421. Through hole; 422. Connecting hole; 51. First mounting hole; 52. Second mounting hole; 53. Third mounting hole; 54. Fourth mounting hole; 55. Fifth mounting hole; 60. Level. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Current hip replacement surgery systems for measuring acetabular anteversion and abduction angles are complex in structure, contain internal electronic components, and are prone to infection; furthermore, they are only compatible with acetabular cup implants from specific manufacturers. To address these technical issues, such as... Figures 1 to 3 as well as Figure 6 As shown, in this embodiment, the angle positioning device includes: a base rod 10, an outward pointing structure 20, and a forward tilting pointing structure 40. The outward pointing structure 20 is disposed at the first end of the base rod 10 and is swayably disposed relative to the base rod 10. The outward pointing structure 20 is provided with a first scale 31 and a mounting part that is detachably engaged with the implantation tool. The forward tilting pointing structure 40 includes a rotating seat 41 and an pointing rod 42. The rotating seat 41 is fixedly disposed at the second end of the base rod 10, and the pointing rod 42 is swayably disposed relative to the rotating seat 41. The swing axis of the outward pointing structure 20 is perpendicular to the swing axis of the forward tilting pointing structure 40. The rotating seat 41 is provided with a second scale 32. The axis of the base rod 10 is parallel to the swing plane of the pointing rod 42 or located within the swing plane of the pointing rod 42.

[0043] Applying the technical solution of this embodiment, the angle positioning device includes a base rod 10 and an outward pointing structure 20 and a forward tilting pointing structure 40 disposed at both ends of the base rod 10. Specifically, the outward pointing structure 20 is disposed at the first end of the base rod 10 and is swayably disposed relative to the base rod 10. The outward pointing structure 20 is provided with a first scale 31 and a mounting part that is detachably engaged with the implantation tool. The mounting part enables the angle positioning device to be fixed on the implantation tool, thereby making the angle positioning device more stable. The forward tilting pointing structure 40 includes a rotating base 41 and an pointing rod 42. The rotating base 41 is fixedly disposed at the second end of the base rod 10, and the pointing rod 42 is swayably disposed relative to the rotating base 41. The swing axis of the outward pointing structure 20 is perpendicular to the swing axis of the forward tilting pointing structure 40. The rotating base 41 is provided with a second scale 32. The axis of the base rod 10 is parallel to the swing plane of the pointing rod 42 or located within the swing plane of the pointing rod 42. With the above-described configuration, the angle positioning device can simultaneously measure both the anteversion and abduction angles. This allows a single tool to measure both angles, simplifying the measurement process. Furthermore, since the swing axis of the abduction indicator structure 20 is perpendicular to the swing axis of the anteversion indicator structure 40 (i.e., the abduction indicator structure 20 and the anteversion indicator structure 40 are located at both ends of the base rod 10 and extend outwards), the angle positioning device has a more compact structure and is easier to place. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where acetabular cup implantation aids can only determine a single angle, thus failing to better adapt to different pelvic postures.

[0044] It should be noted that the swing plane mentioned above refers to the plane on which the axis of the indicator rod lies when the indicator rod swings.

[0045] like Figures 1 to 3 , Figure 10 as well as Figure 14 and Figure 15 As shown, the technical solution of this embodiment can help doctors better adapt to patients with different pelvic postures, select different abduction and anteversion angles, ensure the stability of the reconstructed joint after surgery, and improve the patient's postoperative experience; the first locking plate 221 and the second locking plate 222 are designed in a "V" shape, which can be adapted to acetabular cup implanters with different rod diameters from different manufacturers, and have good versatility; the abduction indicator structure 20 and the anteversion indicator structure 40 adopt a dial magnification structure, which can greatly reduce the module size, reduce costs, and reduce weight while ensuring that the angle can be clearly read.

[0046] like Figures 1 to 4 , Figure 6 , Figure 7 as well as Figure 9As shown, in this embodiment, the rotating base 41 includes a base body 411, a turntable 412, and a cover 413. The base body 411 is connected to the base rod 10, and the cover 413 covers the base body 411. A second scale 32 is disposed on the surface of the cover 413. The turntable 412 is rotatably disposed between the base body 411 and the cover 413. The indicator rod 42 is linked with the turntable 412, and an indicator element 4121 that cooperates with the second scale 32 is disposed on the turntable 412. The turntable 412 is located between the base body 411 and the cover 413, and the cover 413 can protect the turntable 412 inside. Specifically, the turntable 412 can rotate, and the indicator rod 42 can rotate with the turntable 412, that is, the setting of the turntable 412 can make the rotation of the indicator rod 42 more stable. Specifically, the setting of the indicator element 4121 can indicate the second scale 32, thus making the angle measurement more accurate.

[0047] like Figures 1 to 4 , Figure 6 , Figure 7 as well as Figure 9 As shown, in this embodiment, the cover 413 is provided with an arc-shaped groove 4131, the indicator 4121 includes a protrusion, and the indicator rod 42 is provided with a through hole 421. The protrusion is inserted into the through hole 421 and the arc-shaped groove 4131 in sequence, and the first scale 31 is provided on the side of the arc-shaped groove 4131. The protrusion is inserted into the arc-shaped groove 4131, so that the protrusion accurately corresponds to the second scale 32. At the same time, the structure of the protrusion is simple and easy to set. Specifically, in this embodiment, the through hole 421 is a strip hole, which allows the indicator rod to swing, that is, the protrusion can move within the through hole 421.

[0048] like Figures 1 to 4 , Figure 6 , Figure 7 as well as Figure 9 As shown, in this embodiment, the rotating base 41 further includes an elastic element 414 and a first top bead 415. Multiple first limiting grooves 4122 are spaced apart on the side wall of the turntable 412. The elastic element 414 and the first top bead 415 are disposed between the side wall of the cover 413 and the side wall of the turntable 412. The first top bead 415 is adjustablely disposed within one of the multiple first limiting grooves 4122. The elastic element 414 cooperates with the first top bead 415. After installation, the elastic element 414 pushes the first top bead 415 to abut against the multiple first limiting grooves 4122 on the side wall of the turntable 412. This allows the turntable 412 to have a damping feel when rotating, and after the turntable 412 has rotated at an angle, it can be fixed in that position under the action of the elastic element 414 and the first top bead 415.

[0049] like Figures 1 to 4 , Figure 6 , Figure 7 as well as Figure 9 As shown, specifically, the elastic element 414 includes two symmetrically arranged relative to the turntable 412, the first top bead 415 includes two symmetrically arranged relative to the turntable 412, and a plurality of first limiting grooves 4122 are symmetrically arranged on the side wall of the turntable 412.

[0050] like Figures 1 to 4 , Figure 6 , Figure 7 as well as Figure 9 As shown, in this embodiment, a connecting post 4111 is provided on the base 411, and a connecting hole 422 is provided at the end of the indicator rod 42 near the base rod 10. The connecting post 4111 is inserted into the connecting hole 422. The connecting post 4111 serves as the rotation axis of the indicator rod 42, thus enabling the indicator rod 42 to rotate and ensuring the stability of the indicator rod 42's position.

[0051] like Figures 1 to 3 as well as Figures 5 to 8 As shown, in this embodiment, the second end of the base rod 10 is provided with a wedge-shaped insertion part 11, and the seat body 411 is provided with a dovetail groove 4112. The wedge-shaped insertion part 11 and the dovetail groove 4112 are inserted and engaged. The insertion and engagement of the wedge-shaped insertion part 11 and the dovetail groove 4112 makes the connection between the base rod 10 and the seat body 411 more stable. Of course, in the embodiment not shown in the figure, the insertion part is triangular.

[0052] like Figures 1 to 4 , Figure 6 , Figure 9 as well as Figure 14 and Figure 15As shown, in this embodiment, the outward extension indicator structure 20 includes an adjustment seat 21 and a locking member 22. The adjustment seat 21 includes a first connecting portion 211 that is sway-connected to the first end of the base rod 10 and a second connecting portion 212 that is connected to the first connecting portion 211. A first scale 31 is disposed on the outer surface of the first connecting portion 211. The second connecting portion 212 includes a first connecting arm 2121 and a second connecting arm 2122 that are spaced apart. The locking member 22 includes a first locking plate 221, a second locking plate 222, and a driving member 223. The first locking plate 221 and the second locking plate 222 are both located between the first connecting arm 2121 and the second connecting arm 2122. The first locking plate 221 is connected to the first connecting arm 2121. The driving member 223 is disposed on the second connecting arm 2122 and drives the second locking plate 222 to move toward or away from the first locking plate 221. The outward extension indicator structure 20 can accurately measure the outward extension angle. Specifically, the abduction indicator structure 20 includes an adjustment seat 21 and a locking member 22. The adjustment seat 21 is connected to a first connecting part 211 and a second connecting part 212. The first connecting part 211 is connected to the base rod 10. The second connecting part 212 includes a first connecting arm 2121 and a second connecting arm 2122. A first locking plate 221 and a second locking plate 222 are located inside the first connecting arm 2121 and the second connecting arm 2122. A driving member 223 can drive the second locking plate 222 to move toward or away from the first locking plate 221. The driving member 223 can drive the first locking plate 221 and the second locking plate 222 to lock with the implantation tool. This fixing method is simple and can be adapted to implantation tools of different sizes.

[0053] like Figures 1 to 4 , Figure 6 , Figure 9 as well as Figure 14 and Figure 15 As shown, in this embodiment, the first connecting part 211 further includes a third connecting arm 2111. The first end of the base rod 10 is sway-connected to the third connecting arm 2111, and a first scale 31 is disposed on the outer surface of the third connecting arm 2111. The third connecting arm 2111 is sway-connected to the first end of the base rod 10, and the first scale 31 is disposed on the outer surface of the third connecting arm 2111.

[0054] like Figures 1 to 16As shown, in this embodiment, the outward pointing structure 20 further includes a positioning member 23 and a limiting shaft 24. The positioning member 23 is fixedly disposed at the connection between the third connecting arm 2111 and the second connecting part 212. The limiting shaft 24 is rotatably and adjustably inserted through the third connecting arm 2111. Multiple grooves 241 are spaced apart on the side wall of the limiting shaft 24. The positioning member 23 is adjustably disposed within one of the multiple grooves 241. A second limiting groove 242 is disposed on the side wall of the limiting shaft 24. The second limiting groove 242 and the multiple grooves 241 are arranged opposite to each other. A protrusion 12 is disposed at the first end of the base rod 10, and the protrusion 12 is inserted into the second limiting groove 242. The positioning member 23 can limit the position of the base rod 10, and this arrangement can stabilize the rotation angle. The limiting shaft 24 is rotatable, and the rotation of the limiting shaft 24 can drive the base rod 10 to rotate. The base rod 10 can be rotated by the limiting shaft 24 due to the insertion and engagement of the second limiting groove 242 and the protrusion 12. The protrusion 12 has a rounded angle, which prevents interference between the protrusion 12 and the side wall of the second limiting groove 242 when the base rod 10 rotates, and also makes the rotation of the protrusion 12 smoother.

[0055] like Figures 1 to 16 As shown, in this embodiment, the positioning member 23 includes a spring piece 231 and a second top bead 232. The spring piece 231 includes a fixing plate 2311, a bending plate 2312, and an abutment plate 2313. The bending plate 2312 is connected between the fixing plate 2311 and the abutment plate 2313. The abutment plate 2313 and the fixing plate 2311 are arranged in parallel. The length of the fixing plate 2311 is greater than the length of the abutment plate 2313. The second top bead 232 is disposed on the abutment plate 2313. The fixing plate 2311 is fixed to the connection between the third connecting arm 2111 and the second connecting part 212 by fasteners. The fixing plate 2311 is fixed together with the adjusting seat 21. The bending plate 2312 is connected between the fixing plate 2311 and the abutment plate 2313. The fixing plate 2311 and the abutment plate 2313 are arranged in parallel. The second top bead 232 is disposed on the abutment plate 2313 and protrudes in a direction away from the fixing plate 2311. This allows the second top bead 232 to abut against the groove 241. Since there are multiple grooves 241, when the limiting shaft 24 rotates, the second top bead 232 can alternate within the groove 241, thus stabilizing the angle of the outward indicator structure 20.

[0056] like Figures 1 to 16As shown, in this embodiment, the protrusion 12 has a notch 121, the limiting shaft 24 has a through hole 243, the through hole 243 penetrates the second limiting groove 242, and the outward indication structure 20 also includes a pin 25, which is inserted into the through hole 243 and the notch 121. The pin 25 can pass through the notch 121, and this allows the pin 25 to move within the notch 121 when the base rod 10 swings, thereby changing the angle.

[0057] like Figures 1 to 16 As shown, in this embodiment, the third connecting arm 2111 includes a first clamping arm 21111 and a second clamping arm 21112 spaced apart. The first clamping arm 21111 has a first mounting hole 51, and the second clamping arm 21112 has a second mounting hole 52. The limiting shaft 24 is inserted into the first mounting hole 51 and the second mounting hole 52. The arrangement of the first clamping arm 21111 and the second clamping arm 21112 makes the position of the limiting shaft 24 more stable.

[0058] like Figures 1 to 15 As shown, in this embodiment, the first clamping arm 21111 is further provided with a third mounting hole 53, and the second clamping arm 21112 is further provided with a fourth mounting hole 54. The third mounting hole 53 is located at the end of the first mounting hole 51 away from the first connecting arm 2121, and the fourth mounting hole 54 is located at the end of the second mounting hole 52 away from the third connecting arm 2111. The base rod 10 is provided with a fifth mounting hole 55. The fifth mounting hole 55 and the protrusion 12 are spaced apart along the length direction of the base rod 10. The outward extension indicator structure 20 also includes a rotating pin 26, which is sequentially inserted into the third mounting hole 53, the fifth mounting hole 55, and the fourth mounting hole 54. The aforementioned sequential insertion of the rotating pin 26 into the third mounting hole 53, the fifth mounting hole 55, and the fourth mounting hole 54 makes the swing axis of the base rod 10 the rotating pin 26.

[0059] like Figures 1 to 15 As shown, in this embodiment, the first locking plate 221 includes a first plate body 2211 and a second plate body 2212, with a first obtuse angle between the first plate body 2211 and the second plate body 2212. The second locking plate 222 includes a third plate body 2221 and a fourth plate body 2222, with a second obtuse angle between the third plate body 2221 and the fourth plate body 2222. The openings of the first and second obtuse angles are arranged opposite to each other. Anti-slip portions are provided on the inner walls of the first plate body 2211, the second plate body 2212, the third plate body 2221, and the fourth plate body 2222. The first and second obtuse angles allow the first and second locking plates 221 and 222 to be adapted to implantation tools of different sizes, and the anti-slip portions improve the fixation effect.

[0060] like Figure 14As shown, in this embodiment, a level 60 is provided on the base rod 10. The axis of the level 60 is perpendicular to the axis of the rotating seat 41. By providing the level 60, it is easier to observe the position and state of the base rod 10.

[0061] Specifically, the mounting section includes a first locking plate 221, a second locking plate 222, and a driving component 223.

[0062] like Figures 1 to 15 As shown, the usage process of the angle positioning device in this embodiment is as follows:

[0063] Step 1: Fit the angle positioning device onto the acetabular cup implanter containing the acetabular cup, specifically by locking it with the first locking plate 221 and the second locking plate 222;

[0064] Step 2: Rotate the drive component 223 in the direction of the arrow on the drive component 223 so that the first locking plate 221 and the second locking plate 222 clamp the acetabular cup implanter connecting rod. The first locking plate 221 and the second locking plate 222 are provided with anti-slip parts (tooth structure) to ensure reliable fixation.

[0065] Step 3: Use your hand to bend the base rod 10 so that the abduction indicator line is aligned with the required angle value on the first scale 31 to complete the abduction angle adjustment of the acetabular cup implantation. Tighten the locking piece on the fixing plate 2311 to complete the angle locking.

[0066] Step 4: Move the indicator rod 42 by hand to align the indicator 4121 with the required angle value on the second scale, and complete the adjustment of the acetabular cup implantation tilt angle;

[0067] Step 5: Implant the acetabular cup, rotate the drive component 223 in the opposite direction of the arrow to complete the disassembly of the angle positioning device, and rotate to remove the acetabular cup implanter.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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. An angle positioning device, characterized in that, include: Base rod (10); An abduction indicator structure (20) is provided at the first end of the base rod (10). The abduction indicator structure (20) is swayably provided relative to the base rod (10). A first scale (31) is provided on the abduction indicator structure (20). The abduction indicator structure (20) is also provided with a mounting part that can be detachably fitted with the implantation tool. A forward tilting indicator structure (40) includes a rotating seat (41) and an indicator rod (42). The rotating seat (41) is fixedly disposed at the second end of the base rod (10). The indicator rod (42) is swaying relative to the rotating seat (41). The swing axis of the outward tilting indicator structure (20) is perpendicular to the swing axis of the forward tilting indicator structure (40). A second scale (32) is provided on the rotating seat (41). The axis of the base rod (10) is parallel to the swing plane of the indicator rod (42) or located in the swing plane of the indicator rod (42). The outward indication structure (20) includes an adjustment seat (21) and a locking member (22). The adjustment seat (21) includes a first connecting part (211) that is sway-connected to the first end of the base rod (10) and a second connecting part (212) that is connected to the first connecting part (211). The first scale (31) is disposed on the outer surface of the first connecting part (211). The locking member (22) is used to lock the implantation tool. The first connecting part (211) further includes a third connecting arm (2111), the first end of the base rod (10) is sway-connected to the third connecting arm (2111), and the first scale (31) is provided on the outer surface of the third connecting arm (2111); A level (60) is provided on the base rod (10), and the axis of the level (60) is perpendicular to the axis of the rotating seat (41).

2. The angle positioning device according to claim 1, characterized in that, The rotating seat (41) includes a seat body (411), a turntable (412), and a cover (413). The seat body (411) is connected to the base rod (10). The cover (413) is placed on the seat body (411). The second scale (32) is set on the surface of the cover (413). The turntable (412) is rotatably disposed between the seat body (411) and the cover (413). The indicator rod (42) is linked with the turntable (412). The turntable (412) is provided with an indicator (4121) that cooperates with the second scale (32).

3. The angle positioning device according to claim 2, characterized in that, The cover (413) is provided with an arc groove (4131), the indicator (4121) includes a protrusion, the indicator rod (42) is provided with a through hole (421), the protrusion is inserted into the through hole (421) and the arc groove (4131) in sequence, and the first scale (31) is provided on the side of the arc groove (4131).

4. The angle positioning device according to claim 2, characterized in that, The rotating seat (41) further includes an elastic element (414) and a first top bead (415). The side wall of the turntable (412) is provided with a plurality of first limiting grooves (4122) at intervals. The elastic element (414) and the first top bead (415) are disposed between the side wall of the cover (413) and the side wall of the turntable (412). The first top bead (415) is adjustablely disposed in one of the plurality of first limiting grooves (4122).

5. The angle positioning device according to claim 2, characterized in that, The base (411) is provided with a connecting post (4111), and the end of the indicator rod (42) near the base rod (10) is provided with a connecting hole (422). The connecting post (4111) is inserted into the connecting hole (422).

6. The angle positioning device according to claim 2, characterized in that, The second end of the base rod (10) is provided with a wedge-shaped insertion part (11), and the seat (411) is provided with a dovetail groove (4112). The wedge-shaped insertion part (11) and the dovetail groove (4112) are inserted and engaged.

7. The angle positioning device according to claim 1, characterized in that, The second connecting part (212) includes a first connecting arm (2121) and a second connecting arm (2122) spaced apart. The locking member (22) includes a first locking plate (221), a second locking plate (222), and a driving member (223). The first locking plate (221) and the second locking plate (222) are both located between the first connecting arm (2121) and the second connecting arm (2122). The first locking plate (221) is connected to the first connecting arm (2121). The driving member (223) is disposed on the second connecting arm (2122) and drives the second locking plate (222) to move toward or away from the first locking plate (221).

8. The angle positioning device according to claim 7, characterized in that, The outward indication structure (20) further includes a positioning element (23) and a limiting shaft (24). The positioning element (23) is fixedly disposed at the connection between the third connecting arm (2111) and the second connecting part (212). The limiting shaft (24) is rotatably and adjustablely disposed through the third connecting arm (2111). Multiple grooves (241) are provided at intervals on the side wall of the limiting shaft (24). The positioning element (23) is adjustablely disposed in one of the multiple grooves (241). A second limiting groove (242) is provided on the side wall of the limiting shaft (24). The second limiting groove (242) and the multiple grooves (241) are arranged opposite to each other. A protrusion (12) is provided at the first end of the base rod (10). The protrusion (12) is inserted into the second limiting groove (242).

9. The angle positioning device according to claim 8, characterized in that, The positioning component (23) includes a spring piece (231) and a second top bead (232). The spring piece (231) includes a fixing plate (2311), a bending plate (2312), and an abutment plate (2313). The bending plate (2312) is connected between the fixing plate (2311) and the abutment plate (2313). The abutment plate (2313) and the fixing plate (2311) are arranged in parallel. The length of the fixing plate (2311) is greater than the length of the abutment plate (2313). The second top bead (232) is disposed on the abutment plate (2313). The fixing plate (2311) is fixed to the connection between the third connecting arm (2111) and the second connecting part (212) by fasteners.

10. The angle positioning device according to claim 8, characterized in that, The protrusion (12) is provided with a notch (121), the limiting shaft (24) is provided with a through hole (243), the through hole (243) penetrates the second limiting groove (242), and the outward indication structure (20) also includes a pin (25), the pin (25) is inserted into the through hole (243) and the notch (121).

11. The angle positioning device according to claim 8, characterized in that, The third connecting arm (2111) includes a first clamping arm (21111) and a second clamping arm (21112) spaced apart. The first clamping arm (21111) is provided with a first mounting hole (51), and the second clamping arm (21112) is provided with a second mounting hole (52). The limiting shaft (24) is inserted into the first mounting hole (51) and the second mounting hole (52).

12. The angle positioning device according to claim 11, characterized in that, The first clamping arm (21111) is also provided with a third mounting hole (53), and the second clamping arm (21112) is also provided with a fourth mounting hole (54). The third mounting hole (53) is provided at the end of the first mounting hole (51) away from the first connecting arm (2121), and the fourth mounting hole (54) is provided at the end of the second mounting hole (52) away from the third connecting arm (2111). The base rod (10) is provided with a fifth mounting hole (55). The fifth mounting hole (55) and the protrusion (12) are spaced apart along the length direction of the base rod (10). The outward indication structure (20) also includes a rotating pin (26). The rotating pin (26) is inserted into the third mounting hole (53), the fifth mounting hole (55) and the fourth mounting hole (54) in sequence.

13. The angle positioning device according to claim 7, characterized in that, The first locking plate (221) includes a first plate body (2211) and a second plate body (2212), with a first obtuse angle between the first plate body (2211) and the second plate body (2212). The second locking plate (222) includes a third plate body (2221) and a fourth plate body (2222), with a second obtuse angle between the third plate body (2221) and the fourth plate body (2222). The openings of the first obtuse angle and the second obtuse angle are arranged opposite to each other. Anti-slip parts are provided on the inner walls of the first plate body (2211), the second plate body (2212), the third plate body (2221), and the fourth plate body (2222).

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