Angle-adjustable positioning impactor for implanting acetabular cup

Abstract

The invention discloses an angle-adjustable positioning striker for implanting an acetabular cup, which belongs to the technical field of medical instruments and comprises an adjusting mounting component, a positioning guide mechanism, a striking component, a mounting rod and an acetabular cup positioning combination mechanism. A positioning guide mechanism is mounted on the adjusting mounting assembly; the adjusting mounting assembly is used for adjusting the angle of the positioning guide mechanism; a connecting frame is fixedly mounted at the left end of the mounting rod, and an acetabular cup positioning combined mechanism is mounted on the connecting frame; a striking assembly is mounted at the right end of the mounting rod; the positioning guide mechanism comprises a guide assembly I and a guide assembly II; the acetabular cup positioning combination mechanism comprises a fixed positioning assembly and a telescopic inner supporting assembly, the fixed positioning assembly is installed on the connecting frame, and the telescopic inner supporting assembly is installed on the fixed positioning assembly. The telescopic inner supporting assembly is separated from the inner wall of the acetabular cup firstly, then the fixing and positioning assembly is removed, the acetabular cup is prevented from being separated from a bone groove through forced synchronous separation and traction, and therefore installation stability is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an adjustable-angle positioning and striking device for acetabular cup implantation. Background Technology

[0002] During hip replacement surgery, the artificial acetabular cup needs to be precisely fixed to the patient's acetabular bone bed to ensure the rotation center and joint matching of the acetabulum. During the installation process, positioning is usually achieved through a guide support device, which is then struck by medical staff to fix the acetabular cup to the bone bed.

[0003] For example, Chinese patent CN222075370U discloses a sensor-based acetabular positioning device. This device can quickly and accurately monitor the angle of the acetabular cup in real time by using multiple proximity sensors in conjunction, and moves the acetabular cup seat through a screw, threaded sleeve and slider.

[0004] However, to ensure accuracy and installation stability, the guide support device fits tightly against the inner wall of the acetabular cup. During the process of hammering and fixing the acetabular cup to the bone bed, the fit between the guide support device and the acetabular cup becomes even tighter. After installation, if the guide support device is violently dislodged from the acetabular cup, it can easily cause the acetabular cup to shift.

[0005] Based on this, the present invention designs an adjustable-angle positioning impactor for acetabular cup implantation to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an adjustable-angle positioning and striking device for acetabular cup implantation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An adjustable-angle positioning and striking device for acetabular cup implantation includes an adjustment mounting assembly, a positioning guide mechanism, a striking assembly, a mounting rod, and an acetabular cup positioning assembly mechanism. The adjusting mounting assembly is equipped with a positioning guide mechanism; the adjusting mounting assembly is used to adjust the angle of the positioning guide mechanism. A connecting frame is fixedly installed at the left end of the mounting rod, and an acetabular cup positioning assembly is installed on the connecting frame; an impact component is installed at the right end of the mounting rod. The positioning and guiding mechanism includes a guide component one and a guide component two. The adjustment and installation component is equipped with a guide component one for guiding the installation rod, and the adjustment and installation component is equipped with a guide component two for supporting and guiding the striking component. The acetabular cup positioning assembly includes a fixed positioning component and a telescopic inner support component. The fixed positioning component is mounted on the connecting frame, and the telescopic inner support component is mounted on the fixed positioning component.

[0008] Furthermore, the adjustment and installation assembly includes a support plate, a support frame, a support base, a locking structure, and a quick positioning assembly. The support frame is rotatably mounted on the top of the support plate, and the support base is rotatably mounted on the front side of the support frame. The rotation direction of the support frame is perpendicular to the rotation direction of the support base. A set of locking structures is installed on both the support frame and the support base. A set of quick positioning assemblies is installed on both the support frame and the support base to facilitate quick positioning of the installation rod to a specific angle.

[0009] Furthermore, both guide component one and guide component two are mounted on the support base.

[0010] Furthermore, the guide assembly includes a mounting base, a fixing frame, a guide cylinder, and a guide cylinder. The mounting base is detachably mounted on the left side of the front side of the support base by bolts. The fixing frame is fixedly mounted on the front side of the mounting base. The guide cylinder and the guide cylinder are fixedly mounted on the inner front side of the fixing frame. The central axes of the guide cylinder and the guide cylinder are collinear. The mounting rod passes through the middle of the guide cylinder and the guide cylinder, and the outer wall of the mounting rod is slidably connected to the inner wall of the guide cylinder and the guide cylinder.

[0011] Furthermore, the guide assembly two includes a mounting base two, a fixing frame two, a guide frame and a guide slider. The mounting base two is detachably mounted on the right side of the front side of the support base by bolts. The fixing frame two is fixedly mounted on the front side of the mounting base two. The guide frame is fixedly mounted on the inner front side of the fixing frame two. Multiple guide grooves are evenly spaced on the inner side of the guide frame. The guide slider is slidably mounted in the guide groove.

[0012] Furthermore, the striking assembly includes a striking cylinder, a striking plate, and a force-bearing seat. Multiple guide sliders are fixedly installed on the outside of the striking cylinder. The striking plate is fixedly installed inside the striking cylinder. The central axis of the striking cylinder is collinear with the central axis of the guide cylinder. The force-bearing seat is located inside the striking cylinder and is threadedly connected to the right end of the mounting rod.

[0013] Furthermore, the fixed positioning assembly includes a semi-circular mounting bracket, an arc-shaped extension plate, and a mounting cylinder. The arc-shaped extension plate is fixedly installed on the right side of the semi-circular mounting bracket and is fixedly connected to the connecting bracket. Multiple clearance grooves are equally spaced on the semi-circular mounting bracket and the arc-shaped extension plate. The mounting cylinder is fixedly installed on the connecting bracket. The shape and size of the semi-circular mounting bracket are consistent with the inside of the acetabular cup.

[0014] Furthermore, the telescopic inner support assembly includes a conformal inner support frame, a guide block, a retraction limiting slider, a synchronous moving block, and a push cylinder. Each clearance groove 2 accommodates a conformal inner support frame, and the outer wall of the conformal inner support frame fits against the inner wall of the acetabular cup. Multiple guide grooves 2 are provided in the semi-circular mounting frame, and the outer wall of the guide block is slidably connected to the inner wall of the guide groove 2. The guide block is fixedly installed on the inner side of the conformal inner support frame. Each conformal inner support frame has a retraction limiting groove on its side, and a retraction limiting slider is slidably installed in each retraction limiting groove. Multiple retraction limiting sliders are fixedly installed on the synchronous moving block, and the push cylinder is fixedly installed in the mounting cylinder. The output end of the push cylinder slides through the mounting cylinder and is fixedly connected to the right side of the synchronous moving block.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: In use, the acetabular cup is placed at the end of the fixing and positioning component. The fixing and positioning component provides conformal positioning of the acetabular cup, and the telescopic internal support component further secures it. Then, by rotating the support frame and support seat, the angle of the support seat is adjusted, which in turn adjusts the angles of the fixing and positioning component and the telescopic internal support component, aligning the acetabular cup, positioned and supported by the fixing and positioning component and the telescopic internal support component, with the cup in the installation position. When medical personnel strike the striking component, guided by the guide component two, the striking component strikes the installation rod along its axial direction. The acetabular cup is secured in its position by striking it with the connecting frame, fixing and positioning components, and telescopic internal support components. The guide component and striking component work together to transmit the striking force along the axis of the mounting rod, preventing eccentric force from acting on the acetabular cup and affecting installation quality. After installation, the telescopic internal support components are first detached from the inner wall of the acetabular cup, and then the fixing and positioning components are removed. This segmented detachment of the fixing and positioning components and the telescopic internal support components from the acetabular cup avoids forced synchronous detachment that could pull the acetabular cup out of the bone groove, thus ensuring stable installation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 This is the left view of the present invention; Figure 3 This is a front view of the present invention; Figure 4The three-dimensional representation of the present invention Figure 2 ; Figure 5 For along Figure 2 A three-dimensional view after part of the structure has been removed along the AA direction; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 A schematic diagram of a semi-circular mounting bracket and its connection structure; Figure 8 This is a schematic diagram of the pin and its connection structure.

[0018] The labels in the diagram represent: 1. Adjustment and installation components; 11. Support plate; 12. Support frame; 13. Support base; 14. Locking structure; 141. Locking screw; 142. Locking nut; 143. Clearance groove one; 15. Pin; 2. Positioning and guiding mechanism; 21. Guide component one; 211. Mounting base one; 212. Fixing frame one; 213. Guide cylinder one; 214. Guide cylinder two; 22. Guide component two; 221. Mounting base two; 222. Fixing frame two; 223. Guide frame; 224. Guide slider; 3. Impact Components; 31. Striking cylinder; 32. Striking plate; 33. Force-bearing seat; 4. Mounting rod; 41. Connecting frame; 5. Acral cup positioning assembly; 51. Fixed positioning component; 511. Semi-circular mounting frame; 512. Arc-shaped extension plate; 513. Second clearance groove; 514. Mounting cylinder; 52. Telescopic inner support component; 521. Adaptive inner support frame; 522. Second guide groove; 523. Guide block; 524. Retraction limit slide; 525. Retraction limit slider; 526. Synchronous moving block; 527. Push cylinder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0021] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-3An adjustable-angle positioning impactor for acetabular cup implantation includes an adjustment mounting assembly 1, a positioning guide mechanism 2, an impact assembly 3, a mounting rod 4, and an acetabular cup positioning assembly 5. The positioning guide mechanism 2 is mounted on the adjustment mounting assembly 1. The adjustment mounting assembly 1 is used to adjust the angle of the positioning guide mechanism 2. A connecting frame 41 is fixedly mounted on the left end of the mounting rod 4, and the acetabular cup positioning assembly 5 is mounted on the connecting frame 41. The impact assembly 3 is mounted on the right end of the mounting rod 4.

[0022] like Figure 3 and Figure 8 As shown, the positioning and guiding mechanism 2 includes a first guide component 21 and a second guide component 22. The first guide component 21 for guiding the mounting rod 4 is installed on the adjusting and mounting assembly 1, and the second guide component 22 for supporting and guiding the striking assembly 3 is installed on the adjusting and mounting assembly 1.

[0023] like Figure 2 and Figure 8 As shown, the adjustment and installation assembly 1 includes a support plate 11, a support frame 12, a support base 13, a locking structure 14, and a quick positioning assembly. The support frame 12 is rotatably mounted on the top of the support plate 11, and the support base 13 is rotatably mounted on the front side of the support frame 12. The rotation direction of the support frame 12 is perpendicular to the rotation direction of the support base 13. A set of locking structures 14 is installed on both the support frame 12 and the support base 13. Guide assembly 1 21 and guide assembly 22 are both installed on the support base 13. A set of quick positioning assemblies is installed on both the support frame 12 and the support base 13 to facilitate the quick positioning of the installation rod 4 to a specific angle.

[0024] like Figure 2 As shown, the acetabular cup positioning assembly 5 includes a fixed positioning component 51 and a telescopic inner support component 52. The fixed positioning component 51 is mounted on the connecting frame 41, and the telescopic inner support component 52 is mounted on the fixed positioning component 51.

[0025] In this embodiment, the acetabular cup is placed at the end of the fixing and positioning component 51. The fixing and positioning component 51 is used to conformally position the acetabular cup, and the telescopic inner support component 52 is used to further fix the acetabular cup. Then, by rotating the support frame 12 and the support seat 13, the angle of the support seat 13 is adjusted, thereby adjusting the angle of the fixing and positioning component 51 and the telescopic inner support component 52. This aligns the acetabular cup, which is positioned and supported by the fixing and positioning component 51 and the telescopic inner support component 52, with the installation position. The initial angle adjustment is quickly performed using the quick positioning component, and then detailed adjustments are made according to the clinical situation. The locking structure 14 locks the support frame 12 and the support seat 13. Next, the medical staff strikes the striking component 3. Guided by the second guide component 22, the striking component 3 strikes the mounting rod 4 along its axis, thereby impacting the acetabular cup through the connecting frame 41, the fixing and positioning component 51, and the telescopic inner support component 52, thus securing the acetabular cup to the installation position. The cooperation of the second guide component 22 and the striking component 3 ensures that the striking force on the mounting rod 4 is transmitted along its axis, preventing eccentric force from acting on the acetabular cup and affecting the installation quality. During the striking, the acetabular cup is securely installed within the bone groove, and both the fixing and positioning component 51 and the telescopic inner support component 52 are tightly fitted to the inner wall of the acetabular cup. After installation, the telescopic inner support component 52 is first removed from the inner wall of the acetabular cup, and then the fixing and positioning component 51 is removed. This segmented separation of the fixing and positioning component 51 and the telescopic inner support component 52 from the acetabular cup avoids forced synchronous separation that could pull the acetabular cup out of the bone groove, thus ensuring stable installation.

[0026] Example 2: In some embodiments, as a preferred embodiment of the present invention, such as... Figure 3 and Figure 8 As shown, the locking structure 14 includes a locking screw 141 and a locking nut 142. Multiple locking screws 141 are evenly fixedly installed in a circumferential array on the bottom of the support frame 12, and multiple locking screws 141 are fixedly installed in a circumferential array on the rear side of the support base 13. Multiple arc-shaped clearance grooves 143 are provided on the support frame 12 and the support plate 11. The locking screw 141 passes through the clearance groove 143 and is threadedly connected to the locking nut 142.

[0027] The quick positioning assembly includes a pin 15, a positioning pin hole at the bottom and top of the support frame 12, a plurality of preset pin holes aligned with the positioning pin holes on the support frame 12 on the support base 13, a plurality of preset pin holes aligned with the positioning pin holes on the support frame 12 on the support plate 11, and the pin 15 is inserted into the preset pin hole after passing through the positioning pin hole.

[0028] When the positioning pin hole and a certain preset pin hole are aligned, the support plate 11 and the support frame 12 are rotated to a specific angle and connected and positioned by the pin rod 15, which facilitates quick preliminary positioning. After the preliminary positioning is completed, the mounting rod 4 is moved to the corresponding position, and then the pin rod 15 is pulled out and further fine adjustments are made according to the patient's condition. Finally, the support frame 12 and the support base 13 are locked by the locking screw 141 and the locking nut 142.

[0029] like Figure 4As shown, in this embodiment, the guide assembly 21 includes a mounting base 211, a fixing frame 212, a guide cylinder 213, and a guide cylinder 214. The mounting base 211 is detachably mounted on the left side of the front side of the support base 13 by bolts. The fixing frame 212 is fixedly mounted on the front side of the mounting base 211. The guide cylinder 213 and the guide cylinder 214 are fixedly mounted on the inner front side of the fixing frame 212. The central axes of the guide cylinder 213 and the guide cylinder 214 are collinear. The mounting rod 4 passes through the middle of the guide cylinder 213 and the guide cylinder 214. The outer wall of the mounting rod 4 is slidably connected to the inner wall of the guide cylinder 213 and the guide cylinder 214.

[0030] The guide assembly 22 includes a mounting base 221, a fixing frame 222, a guide frame 223, and a guide slider 224. The mounting base 221 is detachably mounted on the right side of the front side of the support base 13 by bolts. The fixing frame 222 is fixedly mounted on the front side of the mounting base 221. The guide frame 223 is fixedly mounted on the inner front side of the fixing frame 222. Multiple guide grooves are evenly spaced on the inner side of the guide frame 223. The guide slider 224 is slidably mounted in the guide groove. The mounting rod 4 passes through the inner side of the guide frame 223.

[0031] like Figure 6 As shown, in this embodiment, the striking component 3 includes a striking cylinder 31, a striking plate 32, and a force-bearing seat 33. Multiple guide sliders 224 are fixedly installed on the outside of the striking cylinder 31. The striking plate 32 is fixedly installed inside the striking cylinder 31. The central axis of the striking cylinder 31 is collinear with the central axis of the guide cylinder 213. The force-bearing seat 33 is located inside the striking cylinder 31 and is slidably connected. The force-bearing seat 33 is threadedly connected to the right end of the mounting rod 4.

[0032] like Figure 5 and Figure 7 As shown, in this embodiment, the fixed positioning component 51 includes a semi-circular mounting bracket 511, an arc-shaped extension plate 512, and a mounting cylinder 514. The arc-shaped extension plate 512 is fixedly mounted on the right side of the semi-circular mounting bracket 511, and the arc-shaped extension plate 512 is fixedly connected to the connecting bracket 41. Multiple clearance grooves 513 are equally spaced on the semi-circular mounting bracket 511 and the arc-shaped extension plate 512. The mounting cylinder 514 is fixedly mounted on the connecting bracket 41. The shape and size of the semi-circular mounting bracket 511 are consistent with the inside of the acetabular cup. The telescopic internal support assembly 52 includes a conformal internal support frame 521, a guide block 523, a retraction limiting slider 525, a synchronous moving block 526, and a push cylinder 527. Each clearance groove 513 accommodates a conformal internal support frame 521, and the outer wall of the conformal internal support frame 521 fits against the inner wall of the acetabular cup. A semi-circular mounting bracket 511 has multiple guide grooves 522. The outer wall of the guide block 523 is slidably connected to the inner wall of the guide groove 522, and the guide block 523 is fixed. The fitting is installed inside the conformal inner support frame 521; each conformal inner support frame 521 has a shrinkage limiting groove 524 on its inner side, and a shrinkage limiting slider 525 is slidably installed in each shrinkage limiting groove 524; multiple shrinkage limiting sliders 525 are fixedly installed on the synchronous moving block 526, and a push cylinder 527 is fixedly installed inside the mounting cylinder 514. The output end of the push cylinder 527 slides through the mounting cylinder 514 and is fixedly connected to the right side of the synchronous moving block 526. The push cylinder 527 is selected as a pneumatic cylinder or an electric push cylinder.

[0033] In this embodiment, the semi-circular mounting bracket 511 is placed inside the acetabular cup, so that the outer wall of the semi-circular mounting bracket 511 fits tightly against the inner wall of the acetabular cup. The acetabular cup is conformally positioned by the cooperation of the semi-circular mounting bracket 511 and the arc-shaped extension plate 512. Then, the push cylinder 527 is activated, which drives the synchronous moving block 526 to move, thereby synchronously driving multiple contraction limiting sliders 525 to move. The contraction limiting sliders 525 slide in the contraction limiting groove 524 and drive the conformal inner support frame 521 to unfold outward under the limiting action of the guide groove 522 and the guide block 523, so that the outer wall of the conformal inner support frame 521 fits tightly against the inner wall of the acetabular cup. Thus, when adjusting and moving, the acetabular cup is positioned and fixed by the semi-circular mounting bracket 511 and the conformal inner support frame 521. When the support frame 12 and the support base 13 rotate, the acetabular cup is moved to the installation position via the guide cylinder 1 213, guide cylinder 2 214, mounting rod 4, connecting frame 41, semi-circular mounting frame 511, and conformal inner support frame 521. During this process, the locking screw 141 moves within the relief groove 143, and then the locking nut 142 is tightened to lock the support frame 12 onto the support plate 11 and the support base 13 onto the support frame 12. The mounting rod 4 is supported and guided by the guide cylinder 1 213 and guide cylinder 2 214 to ensure that the movement direction of the mounting rod 4 is along the axis. When medical staff strike the outer end of the striking cylinder 31, the striking cylinder 31 moves under the guidance of the guide slider 224 and the guide frame 223, causing the striking plate 32 inside the striking cylinder 31 to strike the force receiving seat 33, and the striking force is transmitted to the mounting rod 4 through the force receiving seat 33. During this process, the striking direction of the striking cylinder 31 and the striking plate 32 is along the axial direction of the mounting rod 4 by the guidance of the guide slider 224 and the guide frame 223. The striking force is transmitted along the axial direction of the mounting rod 4 by the cooperation of the striking plate 32 and the force receiving seat 33. After installation, the push cylinder 527 drives the synchronous moving block 526 to reset, thereby resetting the conformal inner support frame 521 through the retraction limit slider 525 and guide block 523, so that the conformal inner support frame 521 is separated from the inner wall of the acetabular cup. During this process, the semi-circular mounting bracket 511 maintains support for the acetabular cup, thereby preventing the acetabular cup from shifting when the conformal inner support frame 521 is separated from the acetabular cup.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable-angle positioning impactor for acetabular cup implantation, comprising an adjustment mounting assembly (1), a positioning guide mechanism (2), an impact assembly (3), a mounting rod (4), and an acetabular cup positioning assembly mechanism (5), characterized in that: The adjustment mounting assembly (1) is equipped with a positioning guide mechanism (2); the adjustment mounting assembly (1) is used to adjust the angle of the positioning guide mechanism (2); A connecting frame (41) is fixedly installed on the left end of the mounting rod (4), and an acetabular cup positioning assembly (5) is installed on the connecting frame (41); an impact assembly (3) is installed on the right end of the mounting rod (4). The positioning guide mechanism (2) includes a guide component one (21) and a guide component two (22). The adjustment and installation component (1) is equipped with a guide component one (21) for guiding the installation rod (4), and the adjustment and installation component (1) is equipped with a guide component two (22) for supporting and guiding the striking component (3). The acetabular cup positioning assembly (5) includes a fixed positioning component (51) and a telescopic inner support component (52). The fixed positioning component (51) is mounted on the connecting frame (41), and the telescopic inner support component (52) is mounted on the fixed positioning component (51).

2. The adjustable-angle positioning and striking device for acetabular cup implantation according to claim 1, characterized in that, The adjustment and installation assembly (1) includes a support plate (11), a support frame (12), a support seat (13), a locking structure (14), and a quick positioning assembly. The support frame (12) is rotatably mounted on the top of the support plate (11), and the support seat (13) is rotatably mounted on the front side of the support frame (12). The rotation direction of the support frame (12) is perpendicular to the rotation direction of the support seat (13). A set of locking structures (14) is installed on both the support frame (12) and the support seat (13). A set of quick positioning assemblies is installed on both the support frame (12) and the support seat (13) to facilitate the quick positioning of the installation rod (4) to a specific angle.

3. The adjustable-angle positioning and striking device for acetabular cup implantation according to claim 2, characterized in that, Both the first guide component (21) and the second guide component (22) are mounted on the support base (13).

4. The adjustable-angle positioning and striking device for acetabular cup implantation according to claim 3, characterized in that, The guide assembly 1 (21) includes a mounting base 1 (211), a fixing frame 1 (212), a guide cylinder 1 (213) and a guide cylinder 2 (214). The mounting base 1 (211) is detachably mounted on the left side of the front side of the support base (13) by bolts. The fixing frame 1 (212) is fixedly mounted on the front side of the mounting base 1 (211). The guide cylinder 1 (213) and the guide cylinder 2 (214) are fixedly mounted on the inner front side of the fixing frame 1 (212). The central axes of the guide cylinder 1 (213) and the guide cylinder 2 (214) are collinear. The mounting rod (4) passes through the middle of the guide cylinder 1 (213) and the guide cylinder 2 (214). The outer wall of the mounting rod (4) is limited and slidably connected to the inner wall of the guide cylinder 1 (213) and the guide cylinder 2 (214).

5. The adjustable-angle positioning and striking device for acetabular cup implantation according to claim 4, characterized in that, The second guide assembly (22) includes a second mounting base (221), a second fixing frame (222), a guide frame (223), and a guide slider (224). The second mounting base (221) is detachably mounted on the right side of the front side of the support base (13) by bolts. The second fixing frame (222) is fixedly mounted on the front side of the second mounting base (221). The guide frame (223) is fixedly mounted on the inner front side of the second fixing frame (222). Multiple guide grooves are evenly spaced on the inner side of the guide frame (223). The guide slider (224) is slidably mounted in the guide groove.

6. The adjustable-angle positioning impactor for acetabular cup implantation according to claim 5, characterized in that, The striking assembly (3) includes a striking cylinder (31), a striking plate (32), and a force-bearing seat (33). Multiple guide sliders (224) are fixedly installed on the outside of the striking cylinder (31). The striking plate (32) is fixedly installed inside the striking cylinder (31). The central axis of the striking cylinder (31) is collinear with the central axis of the guide cylinder (213). The force-bearing seat (33) is located inside the striking cylinder (31) and is threaded to the right end of the mounting rod (4).

7. The adjustable-angle positioning impactor for acetabular cup implantation according to claim 6, characterized in that, The fixed positioning component (51) includes a semi-circular mounting bracket (511), an arc-shaped extension plate (512), and a mounting cylinder (514). The arc-shaped extension plate (512) is fixedly installed on the right side of the semi-circular mounting bracket (511), and the arc-shaped extension plate (512) is fixedly connected to the connecting bracket (41). Multiple clearance grooves (513) are equally spaced on the semi-circular mounting bracket (511) and the arc-shaped extension plate (512). The mounting cylinder (514) is fixedly installed on the connecting bracket (41). The shape and size of the semi-circular mounting bracket (511) are consistent with the inside of the acetabular cup.

8. The adjustable-angle positioning impactor for acetabular cup implantation according to claim 7, characterized in that, The telescopic inner support assembly (52) includes a conformal inner support frame (521), a guide block (523), a retraction limiting slider (525), a synchronous moving block (526), ​​and a push cylinder (527). Each relief groove (513) accommodates a conformal inner support frame (521), and the outer wall of the conformal inner support frame (521) fits against the inner wall of the acetabular cup. A plurality of guide grooves (522) are provided in the semi-circular mounting bracket (511). The outer wall of the guide block (523) is slidably connected to the inner wall of the guide groove (522). The inner side of the conformal inner support frame (521) is fixedly installed; each conformal inner support frame (521) has a shrinkage limiting groove (524) on its inner side, and each shrinkage limiting groove (524) has a shrinkage limiting slider (525) installed in a limiting sliding position; multiple shrinkage limiting sliders (525) are fixedly installed on the synchronous moving block (526), ​​and the push cylinder (527) is fixedly installed in the mounting cylinder (514). The output end of the push cylinder (527) slides through the mounting cylinder (514) and is fixedly connected to the right side of the synchronous moving block (526).

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