Auxiliary alignment equipment for knee joint replacement

Abstract

The utility model discloses auxiliary alignment equipment for knee joint replacement, which comprises a bottom plate and a plurality of line casting devices, the upper surface of the bottom plate is fixedly connected with the bottom plate, the upper surfaces of the two sides of the bottom plate are both fixedly connected with two fixing plates, two guide rods are fixedly connected between the two fixing plates, two L-shaped sliding plates are movably connected between the two guide rods, and the two L-shaped sliding plates are fixedly connected with the bottom plate. The top of the L-shaped sliding plate is movably connected with a locking screw, the locking screw makes close contact with the adjacent guide rod, the top of the L-shaped sliding plate is fixedly connected with a fixing rod, the top of the fixing rod is fixedly connected with a connecting block, the top of the connecting block is provided with a spherical groove, and a rotating ball is movably connected into the spherical groove. According to the utility model, not only can the rays emitted by the line projector be accurately aligned with the images presented by the X-ray film, but also the position of the X-ray film can be limited through the baffle, and the baffle can be prevented from moving out of the sliding rod through the fixing block.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an auxiliary alignment device for knee replacement. Background Art

[0002] Knee replacement is the process of replacing part of the patient's knee joint with artificial parts. Before knee replacement, X-ray images are needed to check the specific condition of the patient's knee joint and then make a prosthesis.

[0003] Currently, joint alignment is usually determined manually during the production of prostheses. However, manual alignment greatly reduces the accuracy of alignment, resulting in unsatisfactory prosthetic effects. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a knee replacement auxiliary alignment device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A knee replacement auxiliary alignment device includes a base plate and multiple line throwers, the upper surface of the base plate is fixedly connected to the base plate, the upper surfaces on both sides of the base plate are fixedly connected to two fixed plates, two guide rods are fixedly connected between the two fixed plates, two L-shaped slides are movably connected between the two guide rods, the top of the L-shaped slide is movably connected to a locking screw, and the locking screw is in close contact with its adjacent guide rod, the top of the L-shaped slide is fixedly connected to a fixing rod, the top of the fixing rod is fixedly connected to a connecting block, a ball groove is provided on the top of the connecting block, a rotating ball is movably connected in the ball groove, the top of the rotating ball is fixedly connected to a round rod, and the round rod is fixed to the line thrower, the upper surface of the base plate is fixedly connected to a square frame, a plurality of lamp tubes are provided inside the square frame, and a light-transmitting plate is provided on the top of the frame.

[0007] As a further solution of the present invention, a bidirectional screw rod is movably connected to an outer wall of one side of the square frame, and two baffles are movably connected to the outer side of the bidirectional screw rod.

[0008] As a further solution of the present invention, a sliding rod is fixedly connected to the outer wall of the other side of the square frame, and the baffle is slidably connected to the sliding rod.

[0009] As a further solution of the present invention, avoidance openings are provided on both sides of the square frame, and the baffle passes through the avoidance openings.

[0010] As a further solution of the present invention, both ends of the sliding rod are fixedly connected with fixed blocks.

[0011] As a further solution of the present invention, mounting holes are provided at multiple corners of the base plate.

[0012] As a further solution of the present invention, one end of the bidirectional screw is fixedly connected to a knob.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model uses a guide rod and a rotating ball to facilitate the staff to adjust the position of the line thrower, so that the rays emitted by the line thrower can be accurately aligned with the image presented by the X-ray film, avoiding manual alignment that easily reduces the alignment accuracy and causes the produced prosthesis to have an unsatisfactory effect, thereby improving the alignment effect of the device.

[0015] 2. The utility model adjusts the distance between the two baffles through a bidirectional screw rod, thereby limiting the position of the baffle on the X-ray film, keeping the X-ray film stable, and improving the limiting effect of the device.

[0016] 3. The utility model can not only guide the baffle through the slide rod so that it can move stably and avoid the baffle from tilting during the movement, but also limit the moving distance of the baffle through the fixed block to prevent the baffle from moving out of the slide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a knee replacement auxiliary alignment device proposed by the present invention;

[0018] Figure 2 This is a partial cross-sectional structural diagram of a knee replacement auxiliary alignment device proposed by the present invention;

[0019] Figure 3 This is a partially enlarged structural schematic diagram of a knee replacement auxiliary alignment device proposed by the present invention.

[0020] In the figure: 1. Base plate; 2. Frame; 3. Fixed plate; 4. Guide rod; 5. L-shaped slide plate; 6. Avoidance opening; 7. Fixed block; 8. Sliding rod; 9. Bidirectional screw; 10. Baffle; 11. Light-transmitting plate; 12. Lamp tube; 13. Fixed rod; 14. Locking screw; 15. Connecting block; 16. Ball groove; 17. Rotating ball; 18. Round rod; 19. Line thrower. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of the present invention.

[0022] Reference Figure 1-Figure 3 A knee replacement auxiliary alignment device includes a base plate 1 and multiple line throwers 19. The model of the line thrower 19 is DY-285G. A square frame 2 is fixed to the upper surface of the base plate 1 by bolts. Multiple lamp tubes 12 are arranged inside the square frame 2. A light-transmitting plate 11 is provided on the top of the frame 2. The X-ray film is placed on the light-transmitting plate 11, and the lamp tube 12 is started to make the image on the X-ray film clearly presented. The upper surface of the base plate 1 is fixed to the base plate 1 by bolts. Two fixing plates 3 are fixed to the upper surfaces of both sides of the base plate 1 by bolts. Two guide rods 4 are fixed between the two fixing plates 3 by bolts. Two L-shaped slides 5 are slidably connected between the two guide rods 4. The guide rod 4 can guide the L-shaped slide 5 so that it can move stably. The top of the L-shaped slide 5 is threadedly connected with a locking screw 14, and the locking screw 14 is fixed to the The adjacent guide rods 4 are in close contact, and the locking screw 14 fixes the position of the L-shaped slide 5 after movement. The top of the L-shaped slide 5 is fixed with a fixing rod 13 by bolts, and the top of the fixing rod 13 is fixed with a connecting block 15 by bolts. A spherical groove 16 is provided on the top of the connecting block 15, and a rotating ball 17 is rotatably connected in the spherical groove 16. The top of the rotating ball 17 is fixed with a round rod 18 by bolts, and the round rod 18 is fixed to the line thrower 19. Start the line thrower 19 and push the L-shaped slide 5 according to the rays emitted by the line thrower 19 to move it to the required position along the guide rod 4. Then rotate the locking screw 14 to fix the position of the L-shaped slide 5, and then move the line thrower 19 to make the rotating ball 17 rotate in the spherical groove 16 until the rays emitted by the line thrower 19 are accurately aligned with the image on the X-ray film.

[0023] In the present invention, it should be noted that a bidirectional screw rod 9 is threadedly connected to the outer wall of one side of the square frame 2, and the outer side of the bidirectional screw rod 9 is threadedly connected to two baffles 10. By rotating the bidirectional screw rod 9, the baffles 10 are respectively moved toward the middle and contacted with the two ends of the X-ray film, so that the position of the X-ray film is limited. A sliding rod 8 is fixed to the outer wall of the other side of the square frame 2 by bolts, and the baffle 10 is slidably connected to the sliding rod 8. The sliding rod 8 can guide the baffle 10 so that it can move stably to prevent the baffle 10 from tilting during the movement. Avoidance openings 6 are provided on both sides of the square frame 2, and the baffle 10 passes through the avoidance openings 6. Both ends of the sliding rod 8 are fixed with fixing blocks 7 by bolts. The fixing blocks 7 can limit the distance that the baffle 10 moves to prevent the baffle 10 from moving out of the sliding rod 8. Mounting holes are provided at multiple corners of the base plate 1, and a knob is welded at one end of the bidirectional screw rod 9.

[0024] Working principle: When it is necessary to align the X-ray film, first place the X-ray film on the light-transmitting plate 11, rotate the bidirectional screw 9, and move the baffle 10 to the middle and contact the two ends of the X-ray film to limit the position of the X-ray film, then start the lamp tube 12 to make the image on the X-ray film clearly presented, then start the line thrower 19, and push the L-shaped slide 5 according to the rays emitted by the line thrower 19 to move it to the required position along the guide rod 4, then rotate the locking screw 14 to fix the position of the L-shaped slide 5, and then rotate the line thrower 19 to make the rotating ball 17 rotate in the ball groove 16 until the rays emitted by the line thrower 19 are accurately aligned with the image on the X-ray film.

[0025] Furthermore, the terms "installed," "disposed," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

Claims

1. A knee replacement auxiliary alignment device, comprising a base plate (1) and a plurality of line throwers (19), characterized in that: The upper surface of the bottom plate (1) is fixedly connected to the bottom plate (1), and the upper surfaces of both sides of the bottom plate (1) are fixedly connected to two fixed plates (3), two guide rods (4) are fixedly connected between the two fixed plates (3), and two L-shaped slides (5) are movably connected between the two guide rods (4), and the top of the L-shaped slide (5) is movably connected to a locking screw (14), and the locking screw (14) is in close contact with the adjacent guide rod (4), and the top of the L-shaped slide (5) is fixedly connected to a fixing rod (13) The top of the fixed rod (13) is fixedly connected to a connecting block (15), the top of the connecting block (15) is provided with a ball groove (16), a rotating ball (17) is movably connected in the ball groove (16), the top of the rotating ball (17) is fixedly connected to a round rod (18), and the round rod (18) is fixed to the line thrower (19), the upper surface of the bottom plate (1) is fixedly connected to a square frame (2), a plurality of lamp tubes (12) are provided inside the square frame (2), and a light-transmitting plate (11) is provided on the top of the square frame (2).

2. The knee replacement auxiliary alignment device according to claim 1, characterized in that: A bidirectional screw rod (9) is movably connected to an outer wall of one side of the square frame (2), and two baffles (10) are movably connected to the outer side of the bidirectional screw rod (9).

3. The knee replacement auxiliary alignment device according to claim 2, characterized in that: The outer wall on the other side of the square frame (2) is fixedly connected with a slide rod (8), and the baffle (10) is slidably connected to the slide rod (8).

4. The knee replacement auxiliary alignment device according to claim 3, characterized in that: Both sides of the square frame (2) are provided with avoidance openings (6), and the baffle (10) passes through the avoidance openings (6).

5. The knee replacement auxiliary alignment device according to claim 3, characterized in that: Both ends of the slide rod (8) are fixedly connected to fixed blocks (7).

6. The knee replacement auxiliary alignment device according to claim 1, characterized in that: Mounting holes are provided at multiple corners of the base plate (1).

7. The knee replacement auxiliary alignment device according to claim 2, characterized in that: One end of the bidirectional screw rod (9) is fixedly connected with a knob.

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