A femoral condyle prosthesis installation guide

Abstract

The application belongs to the technical field of medical devices, in particular to a femoral condyle prosthesis installation guide. The guide comprises a handle, a connecting block, a fixed block, clamping arms, a push block, a No. 1 spring, a main body, a guide rod and a convex column. The clamping arms on both sides are pressed to compress the No. 1 spring, and the clamping arms on both sides are rotated to open to the sides to clamp the femoral condyle prosthesis. The handle is rotated to move the handle to the fixed block, and the push block is close to the femoral condyle prosthesis to clamp and fix the femoral condyle prosthesis together with the clamping arms. When the handle holds the handle to align the femoral condyle prosthesis to the installation position of the femur, the perpendicular line of the femoral condyle prosthesis and the femoral force line will form an included angle. The guide rod is used to compare the perpendicular line of the femoral condyle prosthesis in the sagittal position to visually align the femoral force line and guide the installation of the femoral condyle prosthesis, thereby reducing the probability of the sagittal angle of the installation of the femoral condyle prosthesis, and in turn reducing the phenomenon of loosening of the femoral condyle prosthesis or the inability of the knee joint to straighten and the decrease of the flexion degree.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, in particular to a femoral condyle prosthesis installation guide. BACKGROUND

[0002] The lower end of the femur is thick and can rotate, and the extension to both ends is the femoral condyle, which is an important part of the knee joint. The knee joint is one of the largest and most important joints in the human body, which bears a large part of the body weight. In some cases, the femoral condyle needs to be replaced with a femoral condyle prosthesis due to disease or external damage, which can effectively eliminate the pain of the knee joint and greatly improve the quality of life of patients.

[0003] During knee replacement surgery, the surgeon needs to use a femoral condyle prosthesis holder to clamp the femoral condyle prosthesis. According to the surgeon's experience and the reference of the bone position, the femoral condyle prosthesis is matched with the femur, and then the femoral condyle prosthesis is fixed with the femur as a whole through bone cement.

[0004] However, during knee replacement surgery, especially when the prosthesis is repaired, due to bone defects and other reasons, the reference is missing, and the surgeon's experience is insufficient, which can cause the prosthesis to be angled in the sagittal direction, resulting in early loosening of the prosthesis or the knee joint cannot be straightened and the flexion degree is reduced. The existing femoral condyle prosthesis installation device can only be used to hold the femoral condyle, and cannot provide a guide for the installation direction of the femoral condyle.

[0005] Therefore, the present application provides a femoral condyle prosthesis installation guide. SUMMARY

[0006] In order to make up for the shortcomings of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the femoral condyle prosthesis installation guide comprises a clamping unit and a aiming guide unit; the aiming guide unit is installed on the clamping unit; the clamping unit comprises a handle, a connecting block, a fixed block, a clamping arm, a push block and a first spring; the middle part of the outer circle of the handle is rotatably installed with the connecting block, the end of the handle is rotatably installed with the push block, the outer circle of the handle is threadedly installed with the fixed block, and the fixed block is located between the connecting block and the push block; both sides of the connecting block are hingedly provided with the clamping arm, and a first spring is arranged between both sides of the connecting block and the clamping arm; a straight slot is formed in the middle part of the clamping arm, both sides of the fixed block are slidably connected with the straight slots on both sides, the push block is slidably connected with the fixed block, and the push block is located between the clamping arms on both sides; the aiming guide unit comprises a main body, a guide rod and a protruding column; a pair of protruding columns are fixedly connected to the bottom surface of the main body, an installation interface is formed in the top surface of the push block, the inner wall of the installation interface is slidably connected with the outer wall of the protruding column, and the guide rod is arranged in the middle part of the main body; the shape of the installation interface can be a waist-shaped hole, a square hole or two cylindrical holes, etc., which are common positioning structures; the protruding column is consistent with the installation interface, and can be a square, two cylinders or other common positioning structures; during work, the clamping arms on both sides are pressed to compress the first spring, the clamping arms on both sides are rotated to open to the sides, and the femoral condyle prosthesis is clamped, the handle is rotated to move the handle to the fixed block, the push block is close to the femoral condyle prosthesis to extrude the femoral condyle prosthesis, and the femoral condyle prosthesis is clamped and fixed in cooperation with the clamping arms; when the surgeon holds the handle to align the femoral condyle prosthesis to the installation position of the femur, the perpendicular line of the femoral condyle prosthesis and the femoral force line will form an included angle, the guide rod is used to compare the perpendicular line of the femoral condyle prosthesis in the sagittal plane, which is used for visual alignment of the femoral force line to guide the installation of the femoral condyle prosthesis, so as to reduce the probability of sagittal angle of the installation of the femoral condyle prosthesis, and in turn reduce the phenomenon of loosening of the femoral condyle prosthesis or inability of the knee joint to straighten and reduce the flexion degree.

[0008] Preferably, the guide rod and the main body are hingedly connected through a pin, both ends of the pin are rotatably connected with locking hooks, a groove is formed in the side of the installation interface close to the handle, the bottom of the locking hook is slidably connected with the inner wall of the groove, and the top of the locking hook is provided with a second spring between the main body; when the aiming guide unit is installed, the locking hook is pressed to rotate along the pin, the protruding column at the bottom of the main body is inserted into the installation interface, after the locking hook is released, the second spring is reset, the bottom of the locking hook is clamped into the inside of the groove, the main body is fixed to the top of the push block, and the locking of the aiming guide unit is completed, and at the same time, it is convenient for medical staff to disassemble, clean and disinfect in the later stage.

[0009] Preferably, the side of the main body away from the locking hook is slidably provided with a sliding screw, one end of the sliding screw is provided with a sliding hole, the inner wall of the sliding hole is in sliding fit with the outer wall of the guide rod, the outer circle of the end of the sliding screw away from the sliding hole is threadedly provided with a locking nut, the outer circle of the end of the sliding screw close to the sliding hole is fixedly provided with a locking protrusion, and the locking protrusion is in sliding fit with the inner wall of the side of the main body close to the sliding screw.

[0010] Preferably, the inside of the sliding hole is provided with a third spring, one end of the third spring is fixedly connected with the end of the guide rod, and the other end of the third spring is fixedly connected with the sliding hole.

[0011] Preferably, the inner wall of the side of the main body close to the sliding screw is provided with a first tooth groove, the side of the locking protrusion close to the first tooth groove is provided with a locking tooth groove, and the locking tooth groove is in sliding engagement with the first tooth groove.

[0012] Preferably, the side of the main body close to the sliding screw is provided with a scale, and the locking protrusion is fixedly connected with a pointer at the middle of the parallel surface close to the scale.

[0013] Preferably, one side of the main body away from the angle disc is bolted with a guide rail, and the guide rail is symmetric to the angle disc, one side of the guide rail away from the main body is bolted with a cover plate, a sliding block is slidingly installed between the guide rail and the cover plate, a screw rod is rotatably installed at the middle portion of the sliding block, an inner threaded sleeve is arranged on the side of the locking protrusion away from the pointer, and the outer circle of the screw rod is threadedly matched with the inner circle of the inner threaded sleeve.

[0014] Preferably, the locking protrusion is bolted with a base on the side away from the pointer, the middle portion of the base is bolted with a top cover, and an inner threaded sleeve is slidingly installed between the top cover and the base.

[0015] Preferably, the outer wall of the inner threaded sleeve is provided with a fixing groove on both sides, the middle portion of the base and the middle portion of the top cover are fixedly connected with a fixing protrusion, and the outer wall of the fixing protrusion is slidingly matched with the inner wall of the fixing groove.

[0016] Preferably, the guide rail and the cover plate are provided with a No. 2 tooth groove on the side close to the screw rod, the middle portion of the sliding block is rotatably installed with a rotating rod, the rotating rod penetrates through the sliding block, the both ends of the rotating rod are fixedly connected with adjusting gears, and the adjusting gears are meshed with the No. 2 tooth groove.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. A femoral condyle prosthesis installation guide according to the application, by setting handle, connecting block, fixed block, clamping arm, push block, No. 1 spring, main body, guide rod and convex column; press the clamping arm on both sides, so that the No. 1 spring is compressed, the clamping arm on both sides rotates and opens to both sides, clamps the femoral condyle prosthesis, rotates the handle, so that the handle moves to the fixed block, the push block approaches and extrudes the femoral condyle prosthesis, and the femoral condyle prosthesis is clamped and fixed with the clamping arm; when the surgeon holds the handle and aligns the femoral condyle prosthesis to the installation position of the femur, the guide rod is kept horizontal with the femur, and the installation of the femoral condyle prosthesis is guided, thereby reducing the probability of sagittal angle of the installation of the femoral condyle prosthesis, and in turn reducing the phenomenon of loosening of the femoral condyle prosthesis or inability of the knee joint to straighten and decrease of flexion.

[0019] 2. A femoral condyle prosthesis installation guide according to the application, by setting sliding screw rod, locking nut and locking protrusion; when adjusting the angle of the guide rod, push the locking protrusion to move to the guide rod, so that the end of the guide rod slides into the inside of the sliding hole, so that the locking protrusion is separated from the inner wall of the main body, the medical staff presses or lifts the guide rod to adjust the angle of the guide rod, after the position of the guide rod is adjusted, the locking nut is screwed, so that the sliding screw rod drives the locking protrusion to approach the locking nut, and the outer wall of the main body is clamped and fixed, so that the guide rod is fixed and locked. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below with reference to the drawings.

[0021] Figure 1 is a perspective view of embodiment one of the application;

[0022] Figure 2 is a sectional view of embodiment one of the application;

[0023] Figure 3 is a perspective view of the clamping unit in embodiment one of the application;

[0024] Figure 4 is a perspective view of the aiming and guiding unit in embodiment one of the application;

[0025] Figure 5 is an exploded view of the clamping unit in embodiment one of the application;

[0026] Figure 6 is a sectional view of the clamping unit in embodiment one of the application;

[0027] Figure 7 is an exploded view of the aiming and guiding unit in embodiment one of the application;

[0028] Figure 8 is a perspective view of the aiming and guiding unit in embodiment two of the application;

[0029] Figure 9 is the structural diagram of the guide rail in the second embodiment of the present application;

[0030] Figure 10 is the exploded view of the guide rail in the second embodiment of the present application;

[0031] In the figure: 1, handle; 2, connecting block; 3, fixed block; 4, clamping arm; 5, push block; 6, No. 1 spring; 7, straight slot; 8, main body; 9, guide rod; 10, protruding column; 11, mounting interface; 12, pin; 13, locking hook; 14, recess; 15, No. 2 spring; 16, sliding screw; 17, sliding hole; 18, locking nut; 19, locking protrusion; 20, No. 3 spring; 21, No. 1 gear slot; 22, locking gear slot; 23, angle disc; 24, pointer; 25, guide rail; 26, cover plate; 27, sliding block; 28, screw rod; 29, internally threaded sleeve; 30, base; 31, top cover; 32, fixed groove; 33, fixed protrusion; 34, No. 2 gear slot; 35, rotating rod; 36, adjusting gear. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0033] Embodiment 1

[0034] As Figures 1 to 7As shown, the femoral condyle prosthesis mounting guide comprises a clamping unit and a aiming guide unit; the clamping unit is provided with the aiming guide unit; the clamping unit comprises a handle 1, a connecting block 2, a fixed block 3, a clamping arm 4, a push block 5 and a first spring 6; the connecting block 2 is rotatably installed on the middle part of the outer ring of the handle 1, the push block 5 is rotatably installed on the end of the handle 1, the fixed block 3 is threadedly installed on the outer ring of the handle 1 and is located between the connecting block 2 and the push block 5, the clamping arm 4 is hingedly connected to the two sides of the connecting block 2, the first spring 6 is arranged between the two sides of the connecting block 2 and the clamping arm 4, a straight slot 7 is formed in the middle part of the clamping arm 4, the two sides of the fixed block 3 are slidably connected with the two straight slots 7 respectively, the push block 5 is slidably connected with the fixed block 3, and the push block 5 is located between the two clamping arms 4; the aiming guide unit comprises a main body 8, a guide rod 9 and a protruding column 10; the bottom surface of the main body 8 is fixedly connected with a pair of protruding columns 10, the top surface of the push block 5 is provided with a mounting interface 11, the inner wall of the mounting interface 11 is slidably connected with the outer wall of the protruding column 10, and the middle part of the main body 8 is provided with the guide rod 9; the shape of the mounting interface 11 can be a waist-shaped hole, a square hole or two cylindrical holes, etc., which are common positioning structures; the protruding column 10 is consistent with the mounting interface 11 and can be a square, two cylinders, etc., which are common positioning structures; in operation, the two clamping arms 4 are pressed to compress the first spring 6, the two clamping arms 4 are rotated to open to the sides to clamp the femoral condyle prosthesis, the handle 1 is rotated to move the handle 1 to the fixed block 3, the push block 5 is close to the femoral condyle prosthesis to press the femoral condyle prosthesis, and the femoral condyle prosthesis is clamped and fixed by the clamping arm 4; when the surgeon holds the handle 1 to align the femoral condyle prosthesis to the mounting position of the femur, the perpendicular line of the femoral condyle prosthesis and the femoral force line will form an included angle, the guide rod 9 is used to compare the perpendicular line of the femoral condyle prosthesis in the sagittal plane to visually align the femoral force line to guide the installation of the femoral condyle prosthesis, thereby reducing the probability of the sagittal angle of the installation of the femoral condyle prosthesis, and further reducing the phenomenon of loosening of the femoral condyle prosthesis or the inability of the knee joint to straighten and the decrease of the flexion degree.

[0035] As Figure 1 , Figure 2 , Figure 4 and Figure 7As shown, the guide rod 9 is hinged between the main body 8 through a pin 12, the both ends of the pin 12 are rotatably connected with a locking hook 13, the mounting interface 11 is provided with a groove 14 on the side close to the handle 1, the bottom of the locking hook 13 is in sliding fit with the inner wall of the groove 14, and the top of the locking hook 13 is provided with a second spring 15 between the main body 8; when installing the aiming guide unit, the locking hook 13 is pressed to make the locking hook 13 rotate along the pin 12, the convex column 10 at the bottom of the main body 8 is inserted into the mounting interface 11, and after the locking hook 13 is released, the second spring 15 is reset to push the bottom of the locking hook 13 to be clamped into the inside of the groove 14, the main body 8 is fixed to the top of the pushing block 5, so that the locking of the aiming guide unit is completed, and meanwhile, the later dismounting, cleaning and disinfecting work of the medical staff is facilitated.

[0036] As shown in Figure 2 , Figure 4 and Figure 7 , the main body 8 is slidably provided with a sliding screw rod 16 on the side away from the locking hook 13, the sliding screw rod 16 is provided with a sliding hole 17 on the end close to the locking hook 13, the inner wall of the sliding hole 17 is in sliding fit with the outer wall of the guide rod 9, a locking nut 18 is threadedly installed on the outer circle of the end of the sliding screw rod 16 away from the sliding hole 17, a locking protrusion 19 is fixedly connected to the outer circle of the end of the sliding screw rod 16 close to the sliding hole 17, and the locking protrusion 19 is in sliding fit with the inner wall of the side of the main body 8 close to the sliding screw rod 16; for the femur with normal force line on the sagittal plane, the guide rod 9 is placed on the position of 0 degree to keep the position of the femoral condyle prosthesis on the sagittal plane, but for the femur with abnormal force line or revision cases, the angle needs to be adjusted to adapt to the direction of the longitudinal axis of the femur; when adjusting the angle of the guide rod 9, the locking protrusion 19 is pushed to move towards the guide rod 9, the end of the guide rod 9 is slid into the inside of the sliding hole 17, the locking protrusion 19 is separated from the inner wall of the main body 8, the medical staff presses or lifts the guide rod 9 to adjust the angle of the guide rod 9, after the position of the guide rod 9 is adjusted, the locking nut 18 is screwed to make the sliding screw rod 16 drive the locking protrusion 19 to move close to the locking nut 18, and the outer wall of the main body 8 is clamped and fixed, so that the guide rod 9 is fixed and locked.

[0037] As shown in Figure 2 and Figure 7As shown, the inside of the sliding hole 17 is provided with a third spring 20, one end of the third spring 20 is fixedly connected with the end head of the guide rod 9, and the other end of the third spring 20 is fixedly connected with the sliding hole 17; in working, the locking protrusion 19 is pushed to move towards the guide rod 9, so that the end head of the guide rod 9 slides into the inside of the sliding hole 17, so that the third spring 20 is compressed to store force; after the position adjustment of the guide rod 9 is completed, the locking protrusion 19 is loosened, so that the third spring 20 resets, the locking protrusion 19 is pushed to extrude the inner wall of the main body 8, so that the preliminary fixation of the guide rod 9 is completed, the probability that the guide rod 9 deviates due to vibration when the locking nut 18 is screwed is reduced, at the same time, it is convenient for medical staff to screw the locking nut 18, and the convenience of operation of medical staff is improved.

[0038] As shown in Figure 4 and Figure 7 , the main body 8 is provided with a first tooth groove 21 in the inner wall of the side close to the sliding screw rod 16, the locking protrusion 19 is provided with a locking tooth groove 22 in the side close to the first tooth groove 21, and the locking tooth groove 22 is in sliding engagement with the first tooth groove 21; in working, after the position adjustment of the guide rod 9 is completed, the locking protrusion 19 is loosened, so that the third spring 20 resets, the locking protrusion 19 is pushed to extrude the inner wall of the main body 8, so that the locking tooth groove 22 is clamped into the first tooth groove 21, thereby further improving the stability of the preliminary fixation of the guide rod 9; at the same time, after the locking nut 18 is locked, the locking tooth groove 22 and the first tooth groove 21 are locked, so that the angle of the guide rod 9 is locked, thereby reducing the probability that the guide rod 9 deviates due to vibration when the femoral condyle prosthesis is installed.

[0039] As shown in Figure 4 and Figure 7 , the main body 8 is provided with a scale disc 23 in the side close to the sliding screw rod 16, and the locking protrusion 19 is fixedly connected with a pointer 24 in the middle of the parallel surface close to the scale disc 23; in working, when the guide rod 9 is rotated, the sliding screw rod 16 and the locking protrusion 19 are rotated, so that the pointer 24 is rotated, and the scale disc 23 is matched, so that medical staff can intuitively understand the adjusted angle.

[0040] Embodiment two

[0041] As shown in Figure 8 to Figure 10As shown, the comparative example one, wherein another embodiment of the present application is: the body 8 away from the angle disc 23 one side of the bolt guide rail 25, and the guide rail 25 and angle disc 23 with the body 8 symmetry, the guide rail 25 away from the body 8 one side of the bolt cover plate 26, the guide rail 25 and cover plate 26 between the sliding installation of the slider 27, the middle part of the slider 27 rotationally mounted with the lead screw 28, the locking protrusions 19 away from the pointer 24 one side is provided with the internal thread sleeve 29, the outer circle of the lead screw 28 and the inner circle of the internal thread sleeve 29 are threadedly connected; when working, adjust the angle of the guide rod 9, rotate the lead screw 28, cooperate with the internal thread sleeve 29, push the slider 27 extrude guide rail 25, so that the internal thread sleeve 29 along the lead screw 28 sliding, drive the locking protrusions 19 sliding away from the inner wall of the body 8, so as to complete the release of the guide rod 9.

[0042] As shown in the figure, Figure 8 to Figure 10 the locking protrusions 19 away from the pointer 24 one side of the bolt base 30, the middle part of the base 30 bolted with the top cover 31, the top cover 31 and the base 30 between the sliding installation of the internal thread sleeve 29; when working, the internal thread sleeve 29 is fixedly installed through the base 30 and the top cover 31, which is convenient for the installation and disassembly of medical staff, so as to facilitate the subsequent disinfection work of medical staff.

[0043] As shown in the figure, Figure 10 the outer wall of the internal thread sleeve 29 is provided with a fixed groove 32 on both sides, the middle part of the base 30 and the middle part of the top cover 31 are fixedly connected with the fixed convex strip 33, and the outer wall of the fixed convex strip 33 and the inner wall of the fixed groove 32 are slidingly connected; when the internal thread sleeve 29 is installed between the base 30 and the top cover 31, the fixed convex strip 33 and the fixed groove 32 are engaged, the internal thread sleeve 29 is fixed, so as to reduce the probability of shaking of the internal thread sleeve 29, and the medical staff can install the internal thread sleeve 29 in place.

[0044] As shown in the figure, Figure 8 to Figure 10 the guide rail 25 and the cover plate 26 are provided with a second tooth groove 34 on the side close to the lead screw 28, the middle part of the slider 27 is rotatably connected with a rotating rod 35, and the rotating rod 35 penetrates the slider 27, the two ends of the rotating rod 35 are fixedly connected with an adjusting gear 36, and the adjusting gear 36 is engaged with the second tooth groove 34; when the locking protrusions 19 slide away from the inner wall of the body 8, the rotating rod 35 is rotated, the adjusting gear 36 is driven to rotate, and the second tooth groove 34 is engaged, so as to drive the slider 27 to slide along the guide rail 25, thereby facilitating the medical staff to accurately adjust the angle of the guide rod 9.

[0045] Working time: press the clamping arm 4 on both sides, so that the spring 6 is compressed, the clamping arm 4 on both sides rotates to open, clamps the femoral condyle prosthesis, rotates the handle 1, so that the handle 1 moves to the fixed block 3, the block 5 is close to the extrusion femoral condyle prosthesis, cooperate with the clamping arm 4 to clamp the femoral condyle prosthesis; press the locking hook 13, so that the locking hook 13 rotates along the pin 12, the convex column 10 at the bottom of the main body 8 is inserted into the installation interface 11, after the locking hook 13 is released, the second spring 15 resets, the bottom of the locking hook 13 is pushed into the inside of the groove 14, the main body 8 is fixed to the top of the block 5;

[0046] Rotate the screw rod 28, cooperate with the internal thread sleeve 29, push the sliding block 27 to extrude the guide rail 25, so that the internal thread sleeve 29 slides along the screw rod 28, drives the locking convex 19 to slide away from the inner wall of the main body 8, so that the end of the guide rod 9 slides into the inside of the sliding hole 17, so that the third spring 20 is compressed and stored; rotate the rotating rod 35, drive the adjusting gear 36 to rotate, cooperate with the second gear groove 34, drive the sliding block 27 to slide along the guide rail 25, drive the sliding screw 16 and the locking convex 19 to rotate, so that the pointer 24 rotates, cooperate with the angle disc 23, so that the medical staff can intuitively understand the adjusted angle; after the position of the guide rod 9 is adjusted, reverse rotate the rotating rod 35, cooperate with the third spring 20 to reset, push the locking convex 19 to extrude the inner wall of the main body 8, so that the locking gear slot 22 is clamped into the first gear slot 21, complete the preliminary fixation of the guide rod 9, twist the locking nut 18, so that the sliding screw 16 drives the locking convex 19 to move close to the locking nut 18, the locking gear slot 22 and the first gear slot 21 are locked, so as to lock the angle of the guide rod 9, thereby reducing the probability of angle displacement of the guide rod 9 due to vibration during installation of the femoral condyle prosthesis;

[0047] When the surgeon holds the handle 1 to align the femoral condyle prosthesis to the installation position of the femur, the guide rod 9 is kept horizontal with the femur, and the installation of the femoral condyle prosthesis is guided, thereby reducing the probability of sagittal angle of the femoral condyle prosthesis installation, and thereby reducing the phenomenon of loosening of the femoral condyle prosthesis or inability to straighten and reduce the flexion of the knee joint.

[0048] The above front, back, left, right, up and down are based on the drawings in the specification Figure 1 As the standard of human observation angle, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0049] In the description of the application, it is to be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings and are used only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the application.

[0050] The basic principles, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A femoral condyle prosthesis installation guide, characterized by: It includes a clamping unit and an aiming guide unit; the clamping unit is equipped with an aiming guide unit; the clamping unit includes a handle (1), a connecting block (2), a fixing block (3), a clamping arm (4), a pushing block (5) and a first spring (6); the middle outer ring of the handle (1) is rotatably equipped with a connecting block (2), the end of the handle (1) is rotatably equipped with a pushing block (5), the outer ring of the handle (1) is threaded with a fixing block (3), and the fixing block (3) is located between the connecting block (2) and the pushing block (5), the two sides of the connecting block (2) are hinged with clamping arms (4), the two sides of the connecting block (2) are provided with a first spring (6) between the clamping arms (4), the middle of the clamping arm (4) is provided with a straight slot (7), the two sides of the fixing block (3) are slidably connected to the straight slots (7) on both sides respectively, the pushing block (5) is slidably engaged with the fixing block (3), and the pushing block (5) is located between the clamping arms (4) on both sides; The aiming guide unit includes a main body (8), a guide rod (9) and a protruding post (10); a pair of protruding posts (10) are fixedly connected to the bottom surface of the main body (8), and an installation interface (11) is opened on the top surface of the push block (5). The inner wall of the installation interface (11) slides with the outer wall of the protruding post (10), and a guide rod (9) is provided in the middle of the main body (8). The guide rod (9) is hinged to the main body (8) by a pin (12). The two ends of the pin (12) are rotatably connected to locking hooks (13). The mounting interface (11) has a groove (14) on the side near the handle (1). The bottom of the locking hook (13) slides with the inner wall of the groove (14). A second spring (15) is provided between the top of the locking hook (13) and the main body (8). A sliding screw (16) is slidably installed on the side of the main body (8) away from the locking hook (13). A sliding hole (17) is opened at the end of the sliding screw (16) near the locking hook (13). The inner wall of the sliding hole (17) is slidably engaged with the outer wall of the guide rod (9). A locking nut (18) is threaded on the outer ring of the end of the sliding screw (16) away from the sliding hole (17). A locking protrusion (19) is fixedly connected to the outer ring of the end of the sliding screw (16) near the sliding hole (17). The locking protrusion (19) is slidably engaged with the inner wall of the main body (8) near the sliding screw (16). The sliding hole (17) is provided with a No. 3 spring (20), one end of the No. 3 spring (20) is fixedly connected to the end of the guide rod (9), and the other end of the No. 3 spring (20) is fixedly connected to the sliding hole (17); The main body (8) has a tooth groove (21) on the inner wall near the sliding screw (16), and the locking protrusion (19) has a locking tooth groove (22) on the side near the tooth groove (21). The locking tooth groove (22) and the tooth groove (21) slide and engage.

2. The femoral condyle prosthesis installation guide of claim 1, wherein: The main body (8) is provided with a dial (23) near one side of the sliding screw (16), and the locking protrusion (19) is fixedly connected with a pointer (24) in the middle of the parallel surface near the dial (23).

3. The femoral condyle prosthesis installation guide of claim 2, wherein: The main body (8) is provided with a guide rail (25) on the side away from the dial (23), and the guide rail (25) is symmetric to the dial (23) with the main body (8), the guide rail (25) is fixedly connected with a cover plate (26) on the side away from the main body (8), the guide rail (25) and the cover plate (26) are slidably connected with a sliding block (27), the middle of the sliding block (27) is rotatably connected with a lead screw (28), the side away from the pointer (24) of the locking protrusion (19) is provided with an internally threaded sleeve (29), and the outer circle of the lead screw (28) is threadedly connected with the inner circle of the internally threaded sleeve (29).

4. The femoral condyle prosthesis installation guide of claim 3, wherein: The side away from the pointer (24) of the locking protrusion (19) is fixedly connected with a base (30), the middle of the base (30) is fixedly connected with a top cover (31), and the internally threaded sleeve (29) is slidably connected between the top cover (31) and the base (30).

5. The femoral condyle prosthesis installation guide of claim 4, wherein: The outer wall of the internally threaded sleeve (29) is provided with a fixing groove (32) on both sides, the middle of the base (30) and the middle of the top cover (31) are fixedly connected with a fixing protrusion (33), and the outer wall of the fixing protrusion (33) is slidably connected with the inner wall of the fixing groove (32).

6. The femoral condyle prosthesis installation guide of claim 3, wherein: The side near the lead screw (28) of the guide rail (25) and the cover plate (26) are provided with a second gear slot (34), the middle of the sliding block (27) is rotatably connected with a rotating rod (35), the rotating rod (35) penetrates through the sliding block (27), the two ends of the rotating rod (35) are fixedly connected with an adjusting gear (36), and the adjusting gear (36) is meshed with the second gear slot (34).

Images