Unicondylar joint replacement tibial plateau vertical osteotomy positioning device

Abstract

The invention discloses a unicondylar joint replacement tibial plateau vertical osteotomy positioning device, relates to the technical field of tibial replacement positioning, and provides the following scheme that the unicondylar joint replacement tibial plateau vertical osteotomy positioning device comprises a base, and two up-and-down position adjusting pieces are arranged on the surface of the top of the base in an up-and-down stacked mode. According to the technical scheme, the tibia fixator and the up-down position adjusting piece are arranged, the tibia is clamped and fixed through the tibia fixator, it is ensured that the tibia does not slide in the operation process, the silicon rubber case and the pressure sensor are arranged on the portion, making contact with the tibia, of the clamp, and the clamping force can be monitored while the surface of the tibia is prevented from being damaged. The vertical position adjusting part can adjust the clamping position of the clamp on the ankle, and the osteotomy angle adjusting part is additionally arranged to enable the linear laser transmitter to change the angle, so that rays with angles are projected on the tibia, a doctor can be helped to finely adjust the angle according to actual needs, and accurate positioning is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of tibial replacement positioning, and in particular to a tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement. Background Art

[0002] In the field of treatment of knee joint diseases, unicompartmental arthroplasty is gradually being widely used as an effective treatment method. This surgery is mainly aimed at lesions in the unilateral compartment of the knee joint, and restores the normal function of the knee joint by accurately replacing the diseased articular cartilage and subchondral bone. However, the success of unicompartmental arthroplasty is highly dependent on precise operation during the operation, especially the key link of vertical osteotomy positioning of the tibial plateau, whose accuracy directly determines the installation position of the prosthesis and the postoperative functional recovery of the knee joint.

[0003] In existing unicompartmental knee replacement surgeries, there are many difficulties in positioning the vertical osteotomy of the tibial plateau. On the one hand, the fixation of the tibia during surgery has always been a problem that has troubled doctors. Due to the lack of an effective fixation device, the tibia is prone to sliding during the surgical operation, which not only increases the difficulty of the operation, but also causes deviations in the osteotomy position. On the other hand, the existing technology is also insufficient in adjusting the osteotomy angle. In unicompartmental knee replacement, an accurate osteotomy angle is crucial for the installation of the prosthesis and the functional restoration of the knee joint. However, there is currently a lack of a device that can conveniently and accurately adjust the osteotomy angle. Doctors often find it difficult to fine-tune the angle according to actual needs during surgery, resulting in an inaccurate osteotomy angle, affecting the surgical effect.

[0004] Therefore, according to the defects in the operation of unicompartmental knee replacement proposed above, those skilled in the art proposed a unicompartmental knee replacement tibial plateau vertical osteotomy positioning device. Summary of the invention

[0005] In view of the defects of the above-mentioned background technology, a technical solution of a tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement is provided.

[0006] It comprises a base, on the top surface of which two upper and lower position adjusting members are stacked up and down, the movable side of the lower upper and lower position adjusting member is connected to a tibial clamping jaw, and the movable side of the upper upper and lower position adjusting member is connected to an osteotomy angle adjusting member;

[0007] The up-down position adjustment member includes a vertical plate, a servo motor fixed on the left side wall of the vertical plate, and a screw connected to the output shaft of the servo motor through a coupling, a nut is movably provided on the outer thread of the screw, a movable plate is fixedly connected to the left surface of the nut, an L-shaped plate is fixedly connected to the left end face of the movable plate, the top of the vertical plate is fixedly connected to the top plate, and the top of the screw is rotatably connected to the bottom end face of the top plate;

[0008] The tibial clamping jaw includes a servo electric cylinder, a servo motor fixed to the rear end face of the servo electric cylinder, and two support plates fixed to the front end face of the servo electric cylinder, an LED light is fixed to the top surface of the top support plate, two movable rods are arranged on the side surfaces of the support plates close to each other, the ends of the movable rods close to each other are hinged, and the end of the telescopic shaft of the servo electric cylinder is hinged to the hinge position of the movable rod;

[0009] The ends of the movable rods that are away from each other are hinged with clamp arms, and the middle sections of the clamp arms that are close to each other are hinged with pulling arms. The ends of the pulling arms that are close to each other are overlapped and hinged, and a rotating shaft runs through the upper and lower hinge positions of the pulling arms. The upper and lower ends of the rotating shaft are rotatably connected to the side of the support plate that is close to each other. The front sections of the sides of the clamp arms that are close to each other are covered with silicone sleeves, and the inside of the silicone sleeves is embedded with pressure sensors;

[0010] Specifically: after the unicompartmental joint position is opened and the tibia is exposed, the movement of the upper and lower position adjustment parts on the front side is controlled to drive the tibial clamping jaw to reach the wound position, and the servo motor rotates the screw rod to drive the nut to move upward. During this process, the nut will drive the movable plate to move upward, and with the help of the limiting effect of the guide column and the sleeve, the movable plate will smoothly transport the tibial clamping jaw upward. After the tibial clamping jaw reaches the wound position, the servo motor is used to rotate the servo electric cylinder axially so that the clamping arm maintains a posture perpendicular to the tibial surface. Subsequently, the telescopic shaft of the servo electric cylinder moves to reduce the angle between the movable rods, and then under the limiting effect of the traction arm and the traction effect of the movable rod, the clamping arms approach each other and allow the silicone sleeve to clamp the tibial surface. At the same time, the pressure sensor will transmit the clamping force to avoid excessive clamping of the tibial surface and damage to the soft tissue on the tibial surface.

[0011] The osteotomy angle adjustment member includes a base plate, a fixing strip rotatably arranged on the side wall of the base plate, and a semicircular angle ruler fixed on the bottom surface of the fixing strip, the base plate is inlaid with a block sleeved on the outer surface of the semicircular angle ruler, a screw is fixed on the side of the block away from the semicircular angle ruler, a rubber gasket in contact with the outer surface of the semicircular angle ruler is sleeved on the outer ring surface of the screw, and a straight line laser transmitter is fixedly connected to the outer surface of the fixing strip. Specifically: after the tibia is fixed, the osteotomy angle adjustment member is moved upward to a position flush with the tibia clamping jaws through the upper and lower position adjustment members, and the rubber gasket loses the restriction on the semicircular angle ruler by rotating and loosening the nut, so that the semicircular angle ruler rotates along the rotation point with the base plate, and the pitch angle of the straight line laser transmitter is changed by the angle value on the semicircular angle ruler, so that the laser light emitted by the straight line laser transmitter is projected on the tibia and guides the angle and position of the osteotomy.

[0012] In the technical solution of the above-mentioned unicompartmental hip replacement tibial plateau vertical osteotomy positioning device, preferably: the bottom surface of the servo motor at the bottom and the bottom surface of the vertical plate are both hinged on the top surface of the base, the end of the lower L-shaped plate away from the movable plate is connected to a third electric cylinder, the telescopic shaft of the third electric cylinder is fixedly connected to the outer shell surface of the servo motor, and a second electric cylinder is arranged between the end of the lower L-shaped plate away from the third electric cylinder and the movable plate.

[0013] In the technical solution of the above-mentioned unicompartmental hip replacement tibial plateau vertical osteotomy positioning device, preferably: the top plate and the servo motor are fixedly connected to each other on one side with two guide columns, a sleeve is movably sleeved on the outer ring of the guide column, and the outer surface of the sleeve is fixedly connected to the end face of the movable plate on one side close to the nut.

[0014] In the technical solution of the above-mentioned unicompartmental hip replacement tibial plateau vertical osteotomy positioning device, preferably: the side of the upper L-shaped plate away from the movable plate is fixedly connected to the end face of the side of the bottom plate away from the fixed bar, and a fourth electric cylinder is installed between the upper L-shaped plate and the movable plate; the top surface of the top support plate is fixedly connected to the outer surface of the LED lamp through a bracket.

[0015] In the technical solution of the above-mentioned unicompartmental hip replacement tibial plateau vertical osteotomy positioning device, preferably: a first electric cylinder is hinged on the top surface of the base, and the telescopic axis of the first electric cylinder is hinged to the side wall of the servo motor at the bottom to control the device to form an inclination angle.

[0016] In the technical solution of the above-mentioned unicompartmental hip replacement tibial plateau vertical osteotomy positioning device, preferably: the front sections of the sides where the clamp arms are close to each other are provided with cavities for embedding pressure sensors, and the surfaces of the sides where the silicone sleeves are close to each other are in clamping contact with the surface of the ankle.

[0017] In the technical solution of the tibial plateau vertical osteotomy positioning device for unicompartmental hip replacement, preferably: the ends of the pulling arms that are away from each other are hinged to the middle sections of the clamping arms that are close to each other through a shaft pin.

[0018] In the technical solution of the above-mentioned unicompartmental hip replacement tibial plateau vertical osteotomy positioning device, preferably: the interior of the base plate is provided with a groove for the clamping block to be inserted into, and the side of the clamping block away from the base plate has a groove for the semicircular angle ruler to be inserted and moved.

[0019] In the technical solution of the unicompartmental joint replacement tibial plateau vertical osteotomy positioning device, preferably: the outer surface of the semicircular angle ruler is provided with an angle value, and a shaft is passed through between the base plate and the fixing bar for the fixing bar to rotate

[0020] In the technical solution of the above-mentioned unicompartmental joint replacement tibial plateau vertical osteotomy positioning device, preferably: the front end of the L-shaped plate away from the movable plate is fixedly connected to the electric motor, the output shaft of the electric motor is fixedly connected to the rotating rod through a coupling, and the outer ring side wall of the rotating rod is fixedly connected to the back of the base plate, the bottom of the one-line laser transmitter is fixed with a telescopic plate, the top surface of the end of the telescopic plate is fixedly connected with a vertical osteotomy groove, the interior of the vertical osteotomy groove is provided with a strip through hole for the visible laser emitted by the one-line laser transmitter to pass through, and the visible laser is parallel and coincident with the center axis of the strip through hole.

[0021] It can be seen from the above technical solutions that the vertical osteotomy positioning device for tibial plateau in unicompartmental joint replacement provided by the present invention has the following beneficial effects compared with the prior art:

[0022] In the technical solution of the present invention, a tibial fixer and an upper and lower position adjustment member are provided, and the tibial fixer is used to fix the tibia, so as to ensure that the tibia does not slide during the operation, and a silicone sleeve and a pressure sensor are provided at the part where the clamp contacts the tibia, so as to monitor the clamping force while avoiding damage to the tibia surface. The upper and lower position adjustment member can adjust the clamping position of the clamp on the tibia, and an osteotomy angle adjustment member is provided to change the angle of the straight line laser transmitter, thereby projecting angled rays on the tibia, helping doctors to fine-tune the angle according to actual needs and ensure accurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the osteotomy positioning bracket;

[0025] Figure 2 is a schematic diagram of the tibial fixator;

[0026] Figure 3 is a schematic diagram of an upper and lower position adjustment member;

[0027] Figure 4 is a schematic diagram of the tibia clamping jaws;

[0028] Figure 5 Schematic diagram of the osteotomy angle adjustment piece.

[0029] Attached Figure 1 -Attached Figure 5The corresponding relationship of the parts is as follows:

[0030] 1. Base; 2. Up and down position adjustment member; 21. Vertical plate; 22. Servo motor; 23. Movable plate; 24. Guide column; 25. Screw rod; 26. Top plate; 27. Nut; 3. Tibia clamping jaw; 31. Servo electric cylinder; 32. Servo motor; 33. Support plate; 34. LED light; 35. Silicone sleeve; 36. Pressure sensor; 37. Pulling arm; 38. Clamping arm; 39. Movable rod; 4. Osteotomy angle adjustment member; 41. Bottom plate; 42. Linear laser transmitter; 43. Rubber gasket; 44. Screw rod; 45. Block; 46. Nut; 47. Semicircular angle ruler; 48. Fixing strip; 49. Electric motor; 410. Rotating rod; 411. Telescopic plate; 412. Vertical osteotomy groove; 5. First electric cylinder; 6. Second electric cylinder; 7. Third electric cylinder; 8. Fourth electric cylinder. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0033] Embodiment: A preferred technical solution of a unicompartmental tibial plateau vertical osteotomy positioning device:

[0034] Refer to the instruction manual Figure 1 As shown: it comprises a base 1, on the top surface of the base 1 are two upper and lower position adjusting members 2 stacked up and down, the movable side of the lower upper and lower position adjusting member 2 is connected to a tibial clamping jaw 3, and the movable side of the lower upper and lower position adjusting member 2 is connected to an osteotomy angle adjusting member 4;

[0035] Refer to the instruction manual Figure 3 As shown: the up and down position adjustment member 2 includes a vertical plate 21, a servo motor 22 fixed on the left side wall of the vertical plate 21, and a screw rod 25 connected to the output shaft of the servo motor 22 through a coupling, a nut 27 is movably provided on the outer thread of the screw rod 25, a movable plate 23 is fixedly connected to the left surface of the nut 27, an L-shaped plate is fixedly connected to the left end face of the movable plate 23, the top of the vertical plate 21 is fixedly connected to the top plate 26, and the top of the screw rod 25 is rotatably connected to the bottom end face of the top plate 26;

[0036] Refer to the instruction manual Figure 4 As shown: the tibial clamping jaw 3 includes a servo electric cylinder 31, a servo motor 32 fixed to the rear end surface of the servo electric cylinder 31, and two support plates 33 fixed to the front end surface of the servo electric cylinder 31, an LED light 34 is fixed to the top surface of the top support plate 33, and two movable rods 39 are arranged on the side surface of the support plate 33 close to each other, and the ends of the movable rods 39 close to each other are hinged, and the end of the telescopic shaft of the servo electric cylinder 31 is hinged to the hinge position of the movable rod 39;

[0037] Refer to the instruction manual Figure 4 As shown: the end of the movable rod 39 away from each other is hinged with a clamping arm 38, the middle section of the clamping arm 38 close to each other is hinged with a pulling arm 37, the ends of the pulling arms 37 close to each other overlap and are hinged, and a rotating shaft passes through the upper and lower hinge positions of the pulling arms 37, the upper and lower ends of the rotating shaft are rotatably connected to the side of the support plate 33 close to each other, and the front section of the side of the clamping arms 38 close to each other is covered with a silicone sleeve 35, and a pressure sensor 36 is embedded in the silicone sleeve 35;

[0038] Refer to the instruction manual Figure 5 As shown: the osteotomy angle adjustment member 4 includes a base plate 41, a fixing strip 48 rotatably arranged on the side wall of the base plate 41, and a semicircular angle ruler 47 fixed to the bottom surface of the fixing strip 48, the interior of the base plate 41 is inlaid with a clamping block 45 sleeved on the outer surface of the semicircular angle ruler 47, a screw rod 44 is fixed on the side of the clamping block 45 away from the semicircular angle ruler 47, a rubber gasket 43 in contact with the outer surface of the semicircular angle ruler 47 is sleeved on the outer ring surface of the screw rod 44, and a straight line laser emitter 42 is fixedly connected to the outer surface of the fixing strip 48.

[0039] Refer to the instruction manual Figure 3 As shown: the bottom surface of the bottom servo motor 22 and the bottom surface of the vertical plate 21 are both hinged on the top surface of the base 1, the end of the lower L-shaped plate away from the movable plate 23 is connected to the third electric cylinder 7, the telescopic shaft of the third electric cylinder 7 is fixedly connected to the outer shell surface of the servo motor 32, and the second electric cylinder 6 is arranged between the end of the lower L-shaped plate away from the third electric cylinder 7 and the movable plate 23. Two guide columns 24 are fixedly connected to the side of the top plate 26 and the servo motor 22 close to each other, and a sleeve is movably sleeved on the outer ring of the guide column 24, and the outer surface of the sleeve is fixedly connected to the end surface of one side of the movable plate 23 close to the nut 27. The side of the upper L-shaped plate away from the movable plate 23 is fixedly connected to the end surface of one side of the bottom plate 41 away from the fixing bar 48, and the fourth electric cylinder 8 is installed between the upper L-shaped plate and the movable plate 23; the top surface of the top support plate 33 is fixedly connected to the outer surface of the LED lamp 34 through a bracket. A first electric cylinder 5 is hinged on the top surface of the base 1 , and a telescopic shaft of the first electric cylinder 5 is hinged to a side wall of a bottom servo motor 22 for controlling the device to form an inclination angle.

[0040] Refer to the instruction manual Figure 4 As shown: the front section of the side where the clamp arms 38 are close to each other is provided with a cavity for embedding the pressure sensor 36, and the surface of the side where the silicone sleeve 35 is close to each other is clamped and contacted with the surface of the ankle. The ends of the pulling arms 37 that are far away from each other are hinged to the middle section of the side where the clamp arms 38 are close to each other through a shaft pin. The interior of the bottom plate 41 is provided with a groove for the clamping block 45 to be clamped in, and the side of the clamping block 45 away from the bottom plate 41 has a groove for the semicircular angle ruler 47 to be clamped in and move. The outer surface of the semicircular angle ruler 47 is provided with an angle value, and a shaft runs through the bottom plate 41 and the fixing bar 48 for the fixing bar 48 to rotate.

[0041] Refer to the instruction manual Figure 4 As shown: one end of the front L-shaped plate away from the movable plate 23 is fixedly connected to the electric control motor 49, the output shaft of the electric control motor 49 is fixedly connected to the rotating rod 410 through a coupling, and the outer ring side wall of the rotating rod 410 is fixedly connected to the back of the bottom plate 41, and a telescopic plate 411 is fixed to the bottom of the straight line laser emitter 42, and the top surface of the end of the telescopic plate 411 is fixedly connected to the vertical osteotomy groove 412, wherein the telescopic plate 411 is composed of three sections, and the two sections connected to the straight line laser emitter 42 and the vertical osteotomy groove 412 are hollow square tubes, and a square tube is inserted between the two sections of the hollow square tubes, and 2-3 rubber pads are adhered to the inner side wall of the hollow square tube by glue to form damping and limit the pulling and pulling of the square tube.

[0042] A strip-shaped through hole is provided inside the vertical osteotomy groove 412 for the visible laser emitted by the straight-line laser emitter 42 to pass through, and the visible laser is parallel to and coincides with the central axis of the strip-shaped through hole.

[0043] The electric motor 49 controls the rotating rod 410 to perform a ±90° flipping action, so that the laser emitted by the straight line laser emitter 42 changes from a horizontal state to a vertical state, so as to adapt to the positioning and aiming of parallel osteotomy or vertical osteotomy. At the same time, the vertical osteotomy groove 412 can change its state according to the parallel or vertical state of the straight line laser emitter 42. After the positioning is completed, the saw used for osteotomy can be inserted into the strip-shaped through hole inside the vertical osteotomy groove 412, thereby guiding the saw's osteotomy direction to be consistent with the laser guidance path.

[0044] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0045] After the unicompartmental joint is opened and the tibia is exposed, the upper and lower position adjustment member 2 on the front side is controlled to move to drive the tibial clamping jaw 3 to reach the wound position, and the servo motor 22 rotates the screw rod 25 to drive the nut 27 to move upward. During this process, the nut 27 will drive the movable plate 23 to move upward, and with the help of the limiting effect of the guide column 24 and the sleeve, the movable plate 23 will smoothly transport the tibial clamping jaw 3 upward. After the tibial clamping jaw 3 reaches the wound position, the servo motor 32 is used to rotate the servo electric cylinder 31 axially so that the clamping arm 38 maintains a posture perpendicular to the tibial surface. Subsequently, the telescopic shaft movement of the servo electric cylinder 31 drives the angle between the movable rod 39 to become smaller, and then under the limiting effect of the traction arm 37 and the traction effect of the movable rod 39, the clamping arms 38 approach each other and allow the silicone sleeve 35 to clamp the tibial surface. At the same time, the pressure sensor 36 will transmit the clamping force to avoid excessive clamping of the tibial surface and damage to the soft tissue on the tibial surface.

[0046] After the tibia is fixed, the osteotomy angle adjustment member 4 is moved upward to a position flush with the tibia clamping jaw 3 through the upper and lower position adjustment member 2, and the rubber gasket 43 loses its restriction on the semicircular angle ruler 47 by rotating and loosening the nut 46, so that the semicircular angle ruler 47 can rotate along the rotation point with the base plate 41, and the pitch angle of the straight-line laser emitter 42 is changed by the angle value on the semicircular angle ruler 47, so that the laser light emitted by the straight-line laser emitter 42 is projected onto the tibia and guides the angle and position of the osteotomy.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

Claims

1. A unicompartmental tibial plateau vertical osteotomy positioning device, comprising a base (1), characterized in that: Two upper and lower position adjustment members (2) are stacked up and down on the top surface of the base (1); the movable side of the lower upper and lower position adjustment member (2) is connected to a tibial clamping jaw (3), and the movable side of the upper upper and lower position adjustment member (2) is connected to an osteotomy angle adjustment member (4); The up-down position adjusting member (2) comprises a vertical plate (21), a servo motor (22) fixed on the left side wall of the vertical plate (21), and a screw rod (25) connected to the output shaft of the servo motor (22) through a coupling, a nut (27) is movably provided on the outer ring thread of the screw rod (25), a movable plate (23) is fixedly connected to the left side surface of the nut (27), an L-shaped plate is fixedly connected to the left end surface of the movable plate (23), the top end of the vertical plate (21) is fixedly connected to the top plate (26), and the top end of the screw rod (25) is rotatably connected to the bottom end surface of the top plate (26); The tibial clamping jaw (3) comprises a servo electric cylinder (31), a servo motor (32) fixed to the rear end face of the servo electric cylinder (31), and two support plates (33) fixed to the front end face of the servo electric cylinder (31), an LED lamp (34) being fixed to the top surface of the top support plate (33), two movable rods (39) being arranged on the side surfaces close to each other of the support plates (33), the ends of the movable rods (39) close to each other being hinged, and the end of the telescopic shaft of the servo electric cylinder (31) is hinged to the hinge position of the movable rod (39); The ends of the movable rods (39) that are away from each other are hinged with a clamping arm (38), and the middle sections of the clamping arms (38) that are close to each other are hinged with a pulling arm (37). The ends of the pulling arms (37) that are close to each other overlap and are hinged, and a rotating shaft passes through the upper and lower hinged positions of the pulling arms (37). The upper and lower ends of the rotating shaft are rotatably connected to the side of the support plate (33) that is close to each other. The front sections of the side of the clamping arms (38) that are close to each other are covered with a silicone sleeve (35), and a pressure sensor (36) is embedded inside the silicone sleeve (35); The osteotomy angle adjustment member (4) comprises a base plate (41), a fixing strip (48) rotatably arranged on the side wall of the base plate (41), and a semicircular angle ruler (47) fixed to the bottom surface of the fixing strip (48); a clamping block (45) which is sleeved on the outer surface of the semicircular angle ruler (47) is embedded inside the base plate (41); a screw rod (44) is fixed on the side of the clamping block (45) away from the semicircular angle ruler (47); a rubber gasket (43) which contacts the outer surface of the semicircular angle ruler (47) is sleeved on the outer ring surface of the screw rod (44); and a straight line laser emitter (42) is fixedly connected to the outer surface of the fixing strip (48).

2. The tibial plateau vertical osteotomy positioning device for unicompartmental hip replacement according to claim 1, characterized in that: The bottom surface of the servo motor (22) and the bottom surface of the vertical plate (21) are both hinged on the top surface of the base (1), and the end of the lower L-shaped plate away from the movable plate (23) is connected to the third electric cylinder (7), the telescopic shaft of the third electric cylinder (7) is fixedly connected to the outer shell surface of the servo motor (32), and a second electric cylinder (6) is arranged between the end of the lower L-shaped plate away from the third electric cylinder (7) and the movable plate (23).

3. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: Two guide columns (24) are fixedly connected to the side where the top plate (26) and the servo motor (22) are close to each other. A sleeve is movably sleeved on the outer ring of the guide column (24). The outer surface of the sleeve is fixedly connected to the end face of one side of the movable plate (23) close to the nut (27).

4. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: The side of the upper L-shaped plate away from the movable plate (23) is fixedly connected to the end face of the side of the bottom plate (41) away from the fixed strip (48), and a fourth electric cylinder (8) is installed between the upper L-shaped plate and the movable plate (23); the top surface of the top support plate (33) is fixedly connected to the outer surface of the LED lamp (34) through a bracket.

5. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: A first electric cylinder (5) is hingedly connected to the top surface of the base (1), and a telescopic shaft of the first electric cylinder (5) is hingedly connected to the side wall of the servo motor (22) at the bottom, so as to control the device to form an inclination angle.

6. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: The front sections of the clamp arms (38) on the sides close to each other are provided with cavities for embedding the pressure sensors (36), and the surfaces of the silicone sleeves (35) on the sides close to each other are in clamping contact with the surface of the ankle.

7. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: The ends of the pulling arms (37) that are away from each other are hinged to the middle sections of the clamping arms (38) that are close to each other via a shaft pin.

8. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: A groove for a clamping block (45) to be clamped into is arranged inside the bottom plate (41), and a groove for a semicircular angle ruler (47) to be clamped into and move is provided on a side of the clamping block (45) away from the bottom plate (41).

9. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: An angle value is arranged on the outer surface of the semicircular angle ruler (47), and a shaft is passed through between the bottom plate (41) and the fixing bar (48) for the fixing bar (48) to rotate.

10. The tibial plateau vertical osteotomy positioning device for unicompartmental joint replacement according to claim 1, characterized in that: The end of the L-shaped plate on the front side away from the movable plate (23) is fixedly connected to the electric control motor (49), and the output shaft of the electric control motor (49) is fixedly connected to the rotating rod (410) through a coupling, and the outer ring side wall of the rotating rod (410) is fixedly connected to the back of the bottom plate (41), and the bottom of the one-line laser emitter (42) is fixed with a telescopic plate (411), and the top surface of the end of the telescopic plate (411) is fixedly connected with a vertical osteotomy groove (412), and a strip through hole is opened inside the vertical osteotomy groove (412) for the visible laser emitted by the one-line laser emitter (42) to pass through, and the visible laser is parallel to the central axis of the strip through hole and coincides with each other.

Images