Knee joint replacement postoperative rehabilitation pressing device

By designing an automated knee replacement surgery rehabilitation massage device, which uses a servo motor to drive the lifting seat and clamping plate, the inconvenience and effort of manual massage are solved, realizing automated leg massage and adapting to the rehabilitation training needs of patients of different body types.

CN224484441UActive Publication Date: 2026-07-14HEFEI FIRST PEOPLES HOSPITAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEFEI FIRST PEOPLES HOSPITAL
Filing Date
2025-03-21
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Current rehabilitation training after knee replacement surgery requires doctors to manually apply pressure, which is inconvenient and strenuous to control, thus affecting the rehabilitation effect.

Method used

A rehabilitation massage device for knee replacement surgery was designed, which uses a servo motor-driven lifting seat, clamping plate and airbag cushion. The controller automatically controls the lifting seat to move up and down and the clamping plate to press, so as to realize automatic massage of the leg.

Benefits of technology

It enables automated compression after knee replacement surgery, reduces manual labor, adapts to the needs of patients of different body types, and improves the convenience and efficiency of rehabilitation training.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224484441U_ABST
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Abstract

The utility model discloses a kind of knee joint replacement postoperative rehabilitation pressing devices, including stand, one end of the stand is movably connected with movable seat, one end of the movable seat is fixedly connected with lifting seat, the both sides of the lifting seat are movably connected with telescopic plate, one end of the telescopic plate is fixedly connected with boom, the utility model has beneficial effect, first power mechanism, second power mechanism, third power mechanism and inflation mechanism are respectively driven by controller to operate, so that two groups of fixed rods can be clamped to the calf and thigh in the air, its knee is located in the just below lifting seat, finally again through first power mechanism drive lifting seat slowly lift, lifting lifting seat pushes the lifting of hanged clamping seat, clamping seat drives the lifting of connected clamping plate, clamping plate can repeatedly press the leg of clamping, structure is reasonable, it is convenient for automatic pressing of leg, less manual labor, it is convenient to adjust simultaneously, it is convenient for different body size patient to be clamped and pressed.
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Description

Technical Field

[0001] This utility model relates to the field of rehabilitation training equipment technology, and in particular to a rehabilitation massage device for knee replacement surgery. Background Technology

[0002] Knee replacement surgery is a surgical procedure to treat knee joint diseases. It restores joint function and reduces pain by replacing the diseased part of the knee joint with an artificial joint. After knee replacement surgery, certain rehabilitation training is required to restore the patient's joint function and prevent complications.

[0003] Because knee joint rehabilitation training requires pressing on the leg to facilitate postoperative recovery, existing pressing rehabilitation requires doctors to manually press, which is inconvenient to control the force and is also quite strenuous, thus having a certain impact. Therefore, there is an urgent need for a knee replacement surgery rehabilitation pressing device to solve the above problems. Utility Model Content

[0004] To solve the above problems, this utility model provides a rehabilitation massage device for knee replacement surgery, which is achieved through the following technical solution.

[0005] A rehabilitation massage device for knee replacement surgery includes a column, a movable seat movably connected to one end of the column, a lifting seat fixedly connected to one end of the movable seat, telescopic plates movably connected to both sides of the lifting seat, a hanging rod fixedly connected to one end of the telescopic plate, a clamping seat fixedly connected to one end of the hanging rod, a fixed rod penetrating through the clamping seat, clamping plates movably connected to both ends of the fixed rod, and airbags fixedly connected to opposite sides of the two clamping plates. The device also includes a first power mechanism, a second power mechanism, a third power mechanism, and an inflation mechanism. The first power mechanism drives the lifting seat to rise and fall, the second power mechanism drives the two clamping seats to move, the third power mechanism drives the two clamping plates to clamp onto the limb, and the inflation mechanism inflates the airbags.

[0006] Furthermore, the first power mechanism includes a first servo motor, which is fixedly connected to the top of the column. The output shaft of the first servo motor is fixedly connected to a lead screw, one end of which is connected through a movable seat, and the movable seat and the lead screw are threaded together.

[0007] Furthermore, the second power mechanism includes a second servo motor, which is fixedly connected to the front side of the lifting seat. The output shaft of the second servo motor is fixedly connected to a first gear. Two suspension rods are fixedly connected inside the lifting seat. One end of the telescopic plate extending into the lifting seat is slidably connected to the suspension rod. A rack plate is provided on the opposite side of the two telescopic plates, and the first gear is meshed between the two rack plates.

[0008] Furthermore, the third power mechanism includes a third servo motor, which is fixedly connected to the front side of the clamping seat. The output shaft of the third servo motor is fixedly connected to a worm gear. A two-handed screw is rotatably connected to the clamping seat, and the threads at both ends of the two-handed screw are in opposite directions. A worm wheel fixed on the two-handed screw meshes with the worm gear.

[0009] Furthermore, the inflation mechanism includes an air pump, which is fixedly connected to the rear side of the clamping seat, and the inflation end of the air pump is connected to the airbag pad.

[0010] A controller is fixedly connected to the top of the lifting platform, and the first servo motor, the second servo motor, the third servo motor and the air pump are all electrically connected to the controller via wires.

[0011] One end of the column is fitted onto the bed beam via a slot, and the column is equipped with two fastening knobs, which fix the column to the bed beam.

[0012] The beneficial effects of this utility model are that, during the operation of this device, the controller drives the first power mechanism, the second power mechanism, the third power mechanism and the inflation mechanism to operate, so that the two sets of fixed rods can clamp the suspended lower leg and thigh, with the knee located directly below the lifting seat. Finally, the first power mechanism drives the lifting seat to slowly rise and fall, and the rising and falling lifting seat pushes the suspended clamping seat to rise and fall. The clamping seat drives the connected clamping plate to rise and fall, and the clamping plate can repeatedly press the clamped leg. The structure is reasonable, facilitates automatic leg pressing, reduces manual labor, and is easy to adjust, making it convenient for patients of different body types to clamp and press. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 : A schematic diagram of the structure of a postoperative rehabilitation massage device for knee replacement surgery according to this utility model;

[0015] Figure 2 : A schematic diagram showing the connection between the clamping base and the clamping plate of this utility model;

[0016] Figure 3 : Internal schematic diagram of the clamping base of this utility model;

[0017] Figure 4 : Internal schematic diagram of the lifting seat of this utility model.

[0018] The attached figures are labeled as follows:

[0019] 1. Column; 11. Movable base; 12. Fastening knob; 13. First servo motor; 131. Lead screw;

[0020] 2. Lifting seat; 21. Telescopic plate; 211. Rack plate; 22. Hoist; 23. Second servo motor; 231. First gear;

[0021] 3. Clamping seat; 31. Fixing rod; 32. Clamping plate; 33. Airbag cushion; 34. Third servo motor; 341. Worm gear; 35. Two-hand screw; 351. Worm wheel; 36. Air pump;

[0022] 4. Controller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown, the present invention has the following specific embodiments.

[0025] Example:

[0026] A rehabilitation massage device for knee replacement surgery includes a column 1, a movable seat 11 movably connected to one end of the column 1, a lifting seat 2 fixedly connected to one end of the movable seat 11, telescopic plates 21 movably connected to both sides of the lifting seat 2, a hanging rod 22 fixedly connected to one end of the telescopic plate 21, a clamping seat 3 fixedly connected to one end of the hanging rod 22, a fixed rod 31 penetrating through the clamping seat 3, clamping plates 32 movably connected to both ends of the fixed rod 31, and an airbag cushion 33 fixedly connected to one side of each clamping plate 32. The device also includes a first power mechanism, a second power mechanism, a third power mechanism, and an inflation mechanism. The first power mechanism drives the lifting seat 2 to rise and fall, the second power mechanism drives the two clamping seats 3 to move, the third power mechanism drives the two clamping plates 32 to clamp onto the limb, and the inflation mechanism inflates the airbag cushion 33.

[0027] Specifically, the first power mechanism includes a first servo motor 13, which is fixedly connected to the top of the column 1. The output shaft of the first servo motor 13 is fixedly connected to a lead screw 131. One end of the lead screw 131 is connected through to the movable seat 11, and the movable seat 11 is threadedly engaged with the lead screw 131. The first servo motor 13 can drive the lead screw 131 to rotate, and the lead screw 131 drives the threaded movable seat 11 to rise and fall on the column 1. The movable seat 11 can drive the lifting seat 2 to rise and fall.

[0028] Specifically, the second power mechanism includes a second servo motor 23, which is fixedly connected to the front side of the lifting seat 2. The output shaft of the second servo motor 23 is fixedly connected to a first gear 231. Two suspension rods 22 are fixedly connected inside the lifting seat 2. One end of the telescopic plate 21 extending into the lifting seat 2 is slidably connected to the suspension rod 22. A rack plate 211 is provided on the opposite side of each of the two telescopic plates 21, and the first gear 231 is meshed between the two rack plates 211. The second servo motor 23 can drive the first gear 231 to rotate. The first gear 231 is meshed between the two telescopic plates 21 through the rack plate 211, so that the first gear 231 can drive the two telescopic plates 21 to move in the direction of adjustment, which facilitates the adjustment of the position of the clamping plate 32 from the knee joint.

[0029] Specifically, the third power mechanism includes a third servo motor 34, which is fixedly connected to the front side of the clamping base 3. The output shaft of the third servo motor 34 is fixedly connected to a worm gear 341. A double screw 35 is rotatably connected to the clamping base 3, and the threads at both ends of the double screw 35 are in opposite directions. A worm wheel 351 fixed on the double screw 35 meshes with the worm gear 341. The third servo motor 34 can drive the worm gear 341 to rotate, which in turn drives the meshing worm wheel 351 to rotate. The worm wheel 351 drives the double screw 35 to rotate, and the double screw 35 drives the threaded clamping plate 32 to slide on the fixed rod 31. Since the threads at both ends of the double screw 35 are in opposite directions, the two clamping plates 32 are moved in opposite directions, which facilitates the clamping plates 32 to clamp the limb.

[0030] Specifically, the inflation mechanism includes an air pump 36, which is fixedly connected to the rear side of the clamping seat 3. The inflation end of the air pump 36 is connected to the airbag pad 33, which can inflate the airbag pad 33 so that the airbag pad 33 has a cushioning effect when clamped.

[0031] Specifically, a controller 4 is fixedly connected to the top of the lifting seat 2. The first servo motor 13, the second servo motor 23, the third servo motor 34 and the air pump 36 are all electrically connected to the controller 4 through wires. The controller 4 can automatically control the operation of the first servo motor 13, the second servo motor 23, the third servo motor 34 and the air pump 36. The controller 4 can be controlled by a remote terminal, which is convenient for patients to operate independently.

[0032] Specifically, one end of the support column 1 is connected to the bed beam through a slot. The support column 1 is equipped with two fastening knobs 12, and the support column 1 is fixed to the bed beam through the fastening knobs 12, which makes it easy to fix the support column 1 to the hospital bed and facilitates disassembly and assembly.

[0033] The working principle of this utility model:

[0034] When using the device, firstly, elevate one end of the limb's foot so that the leg can suspend in the air. Then, fix the column 1 to the crossbeam beside the bed. Next, the controller 4 drives the first power mechanism, the second power mechanism, the third power mechanism, and the inflation mechanism to operate, so that the two sets of fixing rods 31 can clamp the suspended lower leg and thigh, with the knee located directly below the lifting seat 2. Finally, the first power mechanism drives the lifting seat 2 to slowly rise and fall. The rising and falling lifting seat 2 pushes the suspended clamping seat 3 to rise and fall. The clamping seat 3 drives the connected clamping plate 32 to rise and fall. The clamping plate 32 can repeatedly press the clamped leg. The structure is reasonable, which facilitates automatic leg pressing, reduces manual labor, and is easy to adjust, making it convenient for patients of different body types to clamp and press.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rehabilitation massage device for knee replacement surgery, comprising a column (1), characterized in that, One end of the column (1) is movably connected to a movable seat (11), and one end of the movable seat (11) is fixedly connected to a lifting seat (2). Both sides of the lifting seat (2) are movably connected to telescopic plates (21). One end of the telescopic plate (21) is fixedly connected to a hanging rod (22), and one end of the hanging rod (22) is fixedly connected to a clamping seat (3). A fixed rod (31) is connected through the clamping seat (3). Both ends of the fixed rod (31) are movably connected to clamping plates (32). An airbag cushion (33) is fixedly connected to one side of each of the two clamping plates (32). The column also includes a first power mechanism, a second power mechanism, a third power mechanism, and an inflation mechanism. The first power mechanism is used to drive the lifting seat (2) to rise and fall. The second power mechanism is used to drive the two clamping seats (3) to move. The third power mechanism is used to drive the two clamping plates (32) to clamp onto the limb. The inflation mechanism is used to inflate the airbag cushion (33).

2. The postoperative rehabilitation massage device for knee replacement surgery according to claim 1, characterized in that: The first power mechanism includes a first servo motor (13), which is fixedly connected to the top of the column (1). The output shaft of the first servo motor (13) is fixedly connected to a lead screw (131), one end of which is connected through to the movable seat (11), and the movable seat (11) and the lead screw (131) are threaded together.

3. The postoperative rehabilitation massage device for knee replacement surgery according to claim 2, characterized in that: The second power mechanism includes a second servo motor (23), which is fixedly connected to the front side of the lifting seat (2). The output shaft of the second servo motor (23) is fixedly connected to a first gear (231). The lifting seat (2) is fixedly connected to two rods (22). One end of the telescopic plate (21) extending into the lifting seat (2) is slidably connected to the rods (22). Each of the two telescopic plates (21) is provided with a rack plate (211) on its opposite side, and the first gear (231) is meshed between the two rack plates (211).

4. The postoperative rehabilitation massage device for knee replacement surgery according to claim 3, characterized in that: The third power mechanism includes a third servo motor (34), which is fixedly connected to the front side of the clamping seat (3). The output shaft of the third servo motor (34) is fixedly connected to a worm gear (341). A double screw (35) is rotatably connected to the clamping seat (3), and the threads at both ends of the double screw (35) are opposite in direction. A worm wheel (351) fixed on the double screw (35) meshes with the worm gear (341).

5. The postoperative rehabilitation massage device for knee replacement surgery according to claim 4, characterized in that: The inflation mechanism includes an air pump (36), which is fixedly connected to the rear side of the clamping seat (3), and the inflation end of the air pump (36) is connected to the airbag pad (33).

6. The postoperative rehabilitation massage device for knee replacement surgery according to claim 5, characterized in that: The top of the lifting seat (2) is fixedly connected to a controller (4), and the first servo motor (13), the second servo motor (23), the third servo motor (34) and the air pump (36) are all electrically connected to the controller (4) through wires.

7. The postoperative rehabilitation massage device for knee replacement surgery according to claim 1, characterized in that: One end of the column (1) is connected to the bed beam through a slot. The column (1) is provided with two fastening knobs (12), and the column (1) is fixed to the bed beam through the fastening knobs (12).