Knee joint postoperative recovery equipment

Abstract

The utility model discloses knee joint postoperative recovery equipment which comprises a bed body and a knee joint exerciser. An accommodating cavity is formed in the rear end of the bed body; a cover plate is hinged to the outer edge of the containing cavity. The knee joint exerciser comprises a base, a first supporting plate, a second supporting plate, an upper supporting plate, a connecting shaft, a lower supporting plate and a driving assembly. The base is slidably assembled in the accommodating cavity, so that the knee joint exerciser can slide along the width direction of the bed body; the first supporting plate and the second supporting plate are installed on the base, and the first supporting plate is located on the front side of the second supporting plate. The knee joint exerciser is slidably assembled with the containing cavity through the base, so that the knee joint exerciser can slide in the containing cavity in the width direction of the bed body, the knee joint exerciser can be moved to the right side of the containing cavity from the left side of the containing cavity, and therefore the knee joint exerciser can be moved to the same side where a patient needs limb exercise according to actual needs of the patient; the knee joints on the left side and the right side can be exercised, and the practicability of the knee joint postoperative recovery equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a device for recovering a knee joint after surgery. Background Art

[0002] During the postoperative care and rehabilitation process of the knee joint, the knee joint needs to be flexed and extended, which can help absorb and dissipate blood stasis in the lacuna joint area, accelerate the recovery of muscles around the lacuna joint, and achieve the purpose of rehabilitation. However, the existing postoperative recovery equipment for the knee joint can only perform unilateral limb exercises. Therefore, different postoperative recovery equipment for the knee joint needs to be prepared for exercises on different sides, which increases costs and takes up space. Moreover, if the other side also needs to be exercised, the patient needs to move to another postoperative recovery equipment for the knee joint. After the operation, the patient will inevitably feel pain during the movement. Utility Model Content

[0003] The utility model aims to provide a postoperative recovery device for knee joints, so as to solve the problem that the existing devices can only exercise the knee joint on one side.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a postoperative recovery device for knee joint, comprising a bed body and a knee joint exerciser; a receiving cavity is arranged at the proximal end of the rear end of the bed body; cover plates are hingedly connected to the outer edges of both sides of the receiving cavity;

[0006] The knee joint exerciser comprises a base, a first support plate, a second support plate, an upper support plate, a connecting shaft, a lower support plate and a driving assembly;

[0007] The base is slidably mounted in the accommodating cavity so that the knee joint exerciser can slide along the width direction of the bed; the first support plate and the second support plate are respectively mounted on the base, and the first support plate is located in front of the second support plate;

[0008] The driving assembly includes a screw rod, a screw rod nut, a driving motor, a guide rail and a track slider; the screw rod is rotatably assembled on the left side of the second support plate along the length direction of the second support plate, the screw rod nut is threadedly connected to the screw rod, the driving motor is arranged on the left side of the second support plate, and the driving end of the driving motor is drivingly connected to one end of the screw rod; the guide rail is arranged on the right side of the second support plate along the length direction of the second support plate, and the track slider is slidably assembled on the guide rail;

[0009] The front end of the upper support plate is hinged to the front proximal end of the first support plate, and the rear end of the upper support plate and the front end of the lower support plate are both hinged to the connecting shaft; the screw nut is provided with a first hinge seat, and the track slider is provided with a second hinge seat; the rear end of the lower support plate is hinged to the first hinge seat and the second hinge seat respectively;

[0010] A placement groove is provided at the proximal end of the rear end of the lower support plate, and a pedal is provided below the placement groove, and the lower end of the pedal is hinged to the placement groove.

[0011] The knee joint postoperative recovery device also includes an angle measurement component, which includes a protractor plate, a first rotating rod and a second rotating rod. The protractor plate is provided with an angle scale, and the protractor plate is arranged on one side of the connecting shaft, and the center point of the protractor plate coincides with the axis extension line of the connecting shaft; one end of the first rotating rod and the second rotating rod are both hinged to the center point of the protractor plate; a first support block is provided on the same side of the upper support plate, and the first rotating rod is tightly against the first support block, so that the upper end surface of the first rotating rod is parallel to the upper end surface of the upper support plate; a second support block is provided on the same side of the lower support plate, and the second rotating rod is tightly against the second support block, so that the upper end surface of the second rotating rod is parallel to the upper end surface of the lower support plate.

[0012] In the knee joint postoperative recovery device, the base is provided with a plurality of installation grooves at intervals along the width direction of the bed body, the bottom of the first support plate is provided with a first installation bar, and the bottom of the second support plate is provided with a second installation bar; the first installation bar and the second installation bar are plugged into the corresponding installation grooves;

[0013] The upper support plate includes a first upper plate, a first extension rod and a first lower plate; the first extension rod is arranged on the front end surface of the first lower plate, the rear end surface of the first lower plate is provided with a first plug hole adapted to the first extension rod, and the first extension rod is plugged into the first plug hole;

[0014] The first lower plate is provided with first adjustment plates on the left and right sides respectively, and the first adjustment plates are provided with a plurality of first adjustment holes at intervals, and the first upper plate is provided with first fixing nuts and first fixing screw holes on the left and right sides; the first fixing nut passes through one of the first adjustment holes and is threadedly connected with the first fixing screw hole on the same side;

[0015] The lower support plate includes a second upper plate, a second extension rod and a second lower plate; the second extension rod is arranged on the front end surface of the second lower plate, the rear end surface of the second lower plate is provided with a second plug hole adapted to the second extension rod, and the second extension rod is plugged into the second plug hole;

[0016] A second adjustment plate is provided on the left and right sides of the second lower plate respectively, and a plurality of second adjustment holes are provided at intervals on the second adjustment plate; a second fixing nut and a second fixing screw hole are provided on the left and right sides of the second upper plate; the second fixing nut passes through one of the second adjustment holes and is threadedly connected with the second fixing screw hole on the same side.

[0017] In the knee joint postoperative recovery device, the accommodating cavity is provided with a slide rail along the width direction of the bed body, and the bottom of the base is provided with a base slider adapted to the slide rail, and the base slider is slidably assembled with the slide rail.

[0018] In the knee joint postoperative recovery device, the accommodating cavity is further provided with a limiting rod, one end of the limiting rod is hinged to the side wall of the accommodating cavity, and the limiting rod is centrally arranged along the length direction.

[0019] In the knee joint postoperative recovery device, the front side wall and the rear side wall of the accommodating cavity are both provided with avoidance gaps. When the cover plate is covered on the accommodating cavity, the cover plate is embedded in the avoidance gaps so that the top surface of the cover plate is flush with the top surface of the bed.

[0020] A technical solution in the utility model can have the following beneficial effects:

[0021] The knee joint exerciser is assembled by sliding the base and the accommodating chamber, so that the knee joint exerciser can slide in the accommodating chamber along the width direction of the bed body, so as to move the knee joint exerciser from the left side of the accommodating chamber to the right side of the accommodating chamber, so that it can be moved to the same side where the patient needs to exercise the limb according to the actual needs of the patient, and both the left and right knee joints can be exercised, which improves the practicality of the knee joint postoperative recovery equipment. When both sides of the patient's knee joints need to be exercised, after exercising one knee joint, the patient does not need to move significantly to exercise the other knee joint, which saves the time of changing positions, reduces unnecessary movement of the patient, and relieves the patient's pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of one embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the accommodating cavity in one embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a knee joint exerciser in one embodiment of the utility model;

[0025] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0026] Figure 5This is a schematic diagram of the structure of the upper support plate in one embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the lower support plate in one embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the connection between the base, the first support plate and the second support plate in one embodiment of the present utility model;

[0029] In the accompanying drawings: a bed 1, a knee joint exerciser 2;

[0030] The accommodating chamber 10 and the cover plate 11; the base 21, the first supporting plate 22, the second supporting plate 23, the upper supporting plate 24, the connecting shaft 25, the lower supporting plate 26, and the driving assembly 27; the angle measuring plate 31, the first rotating rod 32, and the second rotating rod 33;

[0031] Slide rail 101, limit rod 102, avoidance gap 103; placement groove 201; pedal 202; base slider 210; mounting groove 211; first mounting bar 221, second mounting bar 231; first support block 240; first upper plate 241, first extension rod 242, first lower plate 243; first adjustment plate 244; second support block 260; second upper plate 261, second extension rod 262, second lower plate 263, second adjustment plate 264; screw rod 271, screw rod nut 272, guide rail 274, drive motor 273, guide rail 274, track slider 275;

[0032] The first adjusting hole 2441 and the first fixing nut 2411 ; the second adjusting hole 2641 and the second fixing nut 2611 , the first hinge seat 2721 and the second hinge seat 2751 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0035] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figures 1 to 7 The utility model provides a postoperative recovery device for knee joint, comprising a bed body 1 and a knee joint exerciser 2; a receiving cavity 10 is provided at the proximal end of the rear end of the bed body 1; and a cover plate 11 is hingedly connected to the outer edges of both sides of the receiving cavity 10;

[0038] The knee joint exerciser 2 includes a base 21, a first support plate 22, a second support plate 23, an upper support plate 24, a connecting shaft 25, a lower support plate 26 and a driving assembly 27;

[0039] The base 21 is slidably mounted in the accommodating cavity 10, so that the knee joint exerciser 2 can slide along the width direction of the bed body 1; the first support plate 22 and the second support plate 23 are respectively mounted on the base 21, and the first support plate 22 is located in front of the second support plate 23;

[0040] The driving assembly 27 includes a screw rod 271, a screw nut 272, a driving motor 273, a guide rail 274 and a track slider 275; the screw rod 271 is rotatably assembled on the left side of the second support plate 23 along the length direction of the second support plate 23, the screw nut 272 is threadedly connected to the screw rod 271, the driving motor 273 is arranged on the left side of the second support plate 23, and the driving end of the driving motor 273 is drivingly connected to one end of the screw rod 271; the guide rail 274 is arranged on the right side of the second support plate 23 along the length direction of the second support plate 23, and the track slider 275 is slidably assembled on the guide rail 274;

[0041] The front end of the upper support plate 24 is hinged to the front proximal end of the first support plate 22, and the rear end of the upper support plate 24 and the front end of the lower support plate 26 are both hinged to the connecting shaft 25; the screw nut 272 is provided with a first hinge seat 2721, and the track slider 275 is provided with a second hinge seat 2751; the rear end of the lower support plate 26 is hinged to the first hinge seat 2721 and the second hinge seat 2751 respectively;

[0042] A placement slot 201 is provided at the proximal end of the rear end of the lower support plate 26 , and a pedal 202 is provided below the placement slot 201 , and the lower end of the pedal 202 is hinged to the placement slot 201 .

[0043] The rear end surface of the upper support plate 24 and the front end surface of the lower support plate 26 are both provided with connecting shaft hinge seats. The upper support plate 24 and the lower support plate 26 are respectively hinged to the connecting shaft 25, so that the upper support plate 24 and the lower support plate 26 can respectively rotate with the axis of the connecting shaft 25 as the rotation axis.

[0044] The driving assembly 27 drives the screw 271 to rotate forward or backward through the driving end of the driving motor 273, so that the screw nut 272 moves forward or backward, thereby driving the lower support plate 26 to move forward or backward. The guide rail 274 and the track slider 275 on the other side play a guiding role to prevent the lower support plate 26 from being unevenly stressed due to the unidirectional power supply, thereby avoiding the problem of jamming during movement.

[0045] The accommodating chamber 10 is used to store the knee joint exerciser 2. When not in use, the lower support plate 26 is moved along the length direction of the bed body 1 away from the patient's torso, thereby lowering the height of the knee joint exerciser 2, and then the cover plates 11 on both sides of the accommodating chamber 10 are covered to transform the bed body 1 into an ordinary bed. When used as an ordinary bed, the knee joint postoperative recovery equipment can be reasonably utilized to improve the utilization rate.

[0046] The pedal 202 is hinged to the rear end side wall of the placement groove 201, so that when not in use, the pedal 202 can be embedded in the placement groove 201. The above structure can save space and facilitate storage.

[0047] When the knee joint needs to be exercised, the two side covers 11 are opened, the knee joint exerciser 2 is moved to the side of the limb to be exercised, and then the other side cover is closed, the patient's thigh is placed on the upper support plate 24, the patient's calf is placed on the lower support plate 26, and the patient's foot is placed on the footrest. The knee joint exerciser 2 drives the upper support plate 24 and the lower support plate 26 to move through the driving component 27, so that the pedal 202 moves along the length direction of the bed body 1 close to or away from the patient's trunk; because the upper support plate 24 and the lower support plate 26 are hinged to the connecting shaft 25, when the pedal 202 moves along the length direction of the bed body 1 close to the patient's trunk, the upper support plate 24 and the lower support plate 26 move closer to each other and fold, so as to achieve the purpose of knee flexion; when the pedal 202 moves along the length direction of the bed body 1 away from the patient's trunk, the upper support plate 24 and the lower support plate 26 move away from each other and unfold, so as to achieve the purpose of knee extension. The upper support plate 24 and the lower support plate 26 are driven by the driving assembly 27 to perform a reciprocating movement of approaching the patient's trunk - away from the patient's trunk - approaching the patient's trunk, thereby achieving the purpose of knee joint exercise.

[0048] The knee joint exerciser 2 is slidably assembled with the accommodating chamber 10 through the base 21, so that the knee joint exerciser 2 can slide in the accommodating chamber 10 along the width direction of the bed body 1, and the knee joint exerciser 2 can be moved from the left side of the accommodating chamber 10 to the right side of the accommodating chamber 10, so that it can be moved to the same side where the patient needs to exercise the limb according to the actual needs of the patient, and both the left and right knee joints can be exercised, which improves the practicality of the knee joint postoperative recovery equipment. When both sides of the patient's knee joints need to be exercised, after exercising one knee joint, the patient does not need to move significantly to exercise the other knee joint, which saves the time of changing positions, reduces unnecessary movement of the patient, and relieves the patient's pain.

[0049] Specifically, it also includes an angle measuring component, which includes a protractor plate 31, a first rotating rod 32 and a second rotating rod 33. The protractor plate 31 is provided with an angle scale, and the protractor plate 31 is arranged on one side of the connecting shaft 25, and the center point of the protractor plate 31 coincides with the axial extension line of the connecting shaft 25; one end of the first rotating rod 32 and the second rotating rod 33 are both hinged to the center point of the protractor plate 31; a first support block 240 is provided on the same side of the upper support plate 24, and the first rotating rod 32 is tightly against the first supporting block 240, so that the upper end surface of the first rotating rod 32 is parallel to the upper end surface of the upper support plate 24; a second support block 260 is provided on the same side of the lower support plate 26, and the second rotating rod 33 is tightly against the second supporting block 260, so that the upper end surface of the second rotating rod 33 is parallel to the upper end surface of the lower support plate 26.

[0050] The angle between the upper support plate 24 and the lower support plate 26 is affected by the moving distance of the screw nut 272, and the knee flexion angle can be determined by controlling the moving range of the screw nut 272. The angle measurement component is used to measure the angle between the upper support plate 24 and the lower support plate 26, so as to measure the knee flexion angle of each exercise, and can quantify the knee joint exercise to avoid the problem of too large an angle in a single exercise causing knee joint injury, or too small an angle in a single exercise causing an insignificant exercise effect.

[0051] The first support block 240 and the second support block 260 play a positioning role, so that the upper end surface of the first rotating rod 32 is parallel to the upper end surface of the upper support plate 24, and the upper end surface of the second rotating rod 33 is parallel to the upper end surface of the lower support plate 26; thereby, medical staff can measure the angle between the upper support plate 24 and the lower support plate 26 based on the angle between the first rotating rod 32 and the second rotating rod 33.

[0052] Specifically, the base 21 is provided with a plurality of installation grooves 211 at intervals along the width direction of the bed body 1, a first installation bar 221 is provided at the bottom of the first support plate 22, and a second installation bar 231 is provided at the bottom of the second support plate 23; the first installation bar 221 and the second installation bar 231 are inserted into the corresponding installation grooves 211;

[0053] The upper support plate 24 includes a first upper plate 241, a first extension rod 242 and a first lower plate 243; the first extension rod 242 is arranged on the front end surface of the first lower plate 243, and the rear end surface of the first lower plate 243 is provided with a first plug hole adapted to the first extension rod 242, and the first extension rod 242 is plugged into the first plug hole;

[0054] The first lower plate 243 is provided with first adjustment plates 244 on the left and right sides respectively, and the first adjustment plates 244 are provided with a plurality of first adjustment holes 2441 at intervals, and the first upper plate 241 is provided with first fixing nuts 2411 and first fixing screw holes on the left and right sides; the first fixing nut 2411 passes through one of the first adjustment holes 2441 and is threadedly connected with the first fixing screw hole on the same side;

[0055] The lower support plate 26 includes a second upper plate 261, a second extension rod 262 and a second lower plate 263; the second extension rod 262 is arranged on the front end surface of the second lower plate 263, and the rear end surface of the second lower plate 263 is provided with a second plug hole adapted to the second extension rod 262, and the second extension rod 262 is plugged into the second plug hole;

[0056] The second lower plate 263 is provided with a second adjustment plate 264 on the left and right sides respectively, and the second adjustment plate 264 is provided with a plurality of second adjustment holes 2641 at intervals, and the second upper plate 261 is provided with a second fixing nut 2611 and a second fixing screw hole on the left and right sides; the second fixing nut 2611 passes through one of the second adjustment holes 2641 and is threadedly connected with the second fixing screw hole on the same side.

[0057] When the length of the upper support plate 24 needs to be shortened, the first extension rod 242 is inserted into the first insertion hole to reduce the distance between the first upper plate 241 and the first lower plate 243. When the length of the upper support plate 24 needs to be extended, the first extension rod 242 is pulled out of the first insertion hole to increase the distance between the first upper plate 241 and the first lower plate 243. The first upper plate 241 and the first lower plate 243 are fixed by the cooperation of the first adjustment plate 244, the first fixing nut 2411 and the first fixing screw hole, so as to prevent the first upper plate 241 and the first lower plate 243 from shifting during exercise and causing the problem of patient injury.

[0058] The length adjustment structure of the lower support plate 26 is the same as that of the upper support plate 24. Similarly, the second extension rod 262 is extended and retracted inside the second upper flat plate 261 and the second lower flat plate 263 to adjust the length of the lower support plate 26, and the second upper flat plate 261 and the second lower flat plate 263 are fixed by the cooperation of the second adjustment plate 264, the second fixing nut 2611 and the second fixing screw hole.

[0059] By adopting the above structure, the distance between the first support plate 22 and the second support plate 23 can be adjusted, the distance between the first upper plate 241 and the first lower plate 243 can be adjusted, and the distance between the second upper plate 261 and the second lower plate 263 can be adjusted, so as to adjust the length of the first support plate 22, the second support plate 23, the upper support plate 24 and the lower support plate 26, so as to facilitate use for patients of different body shapes.

[0060] Furthermore, the accommodating cavity 10 is provided with a slide rail 101 along the width direction of the bed body 1 , and the bottom of the base 21 is provided with a base slider 210 adapted to the slide rail 101 , and the base slider 210 is slidably assembled with the slide rail 101 .

[0061] In a specific embodiment, the accommodating cavity 10 and the base 21 are slidably assembled by the cooperation of the slide rail 101 and the base slider 210 ; the above structure is simple and easy to install.

[0062] Furthermore, the accommodating cavity 10 is further provided with a limiting rod 102 , one end of which is hinged to the side wall of the accommodating cavity 10 , and the limiting rod 102 is centrally arranged along the length direction.

[0063] By adopting the above structure, the cover plate 11 can be used to limit the position of the knee joint exerciser 2, so as to prevent the knee joint exerciser 2 from sliding during the patient's exercise and avoid the patient's injury. After the position of the knee joint exerciser 2 is determined, the limit rod 102 is rotated downward with the hinge end of the limit rod 102 and the accommodating chamber 10 as the rotation point, so that the limit rod 102 is placed on the slide rail 101. When the position of the knee joint exerciser 2 needs to be changed, the limit rod 102 is first rotated upward with the hinge end of the limit rod 102 and the accommodating chamber 10 as the rotation point. After the knee joint exerciser 2 is moved, the limit rod 102 is lowered, so that it is rotated downward with the hinge end of the limit rod 102 and the accommodating chamber 10 as the rotation point, and the limit can be achieved.

[0064] Specifically, the front side wall and the rear side wall of the accommodating cavity 10 are both provided with an avoidance gap 103 . When the cover plate 11 is covered on the accommodating cavity 10 , the cover plate 11 is embedded in the avoidance gap 103 , so that the top surface of the cover plate 11 is flush with the top surface of the bed body 1 .

[0065] With the above structure, when the cover plate 11 is covered on the accommodating cavity 10, the top surface of the cover plate 11 can be made flush with the top surface of the bed body 1, thereby avoiding the problem that the top surfaces of the cover plate 11 and the bed body 1 are different, resulting in the patient being unable to lie flat when the knee surgery recovery equipment is used as an ordinary bed, thereby avoiding the problem of reduced patient comfort.

[0066] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementations of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A knee joint postoperative recovery device, characterized in that: It comprises a bed body and a knee joint exerciser; a receiving cavity is provided at the proximal end of the rear end of the bed body; and cover plates are hingedly connected to the outer edges of both sides of the receiving cavity; The knee joint exerciser comprises a base, a first support plate, a second support plate, an upper support plate, a connecting shaft, a lower support plate and a driving assembly; The base is slidably mounted in the accommodating cavity so that the knee joint exerciser can slide along the width direction of the bed; the first support plate and the second support plate are respectively mounted on the base, and the first support plate is located in front of the second support plate; The driving assembly includes a screw rod, a screw rod nut, a driving motor, a guide rail and a track slider; the screw rod is rotatably assembled on the left side of the second support plate along the length direction of the second support plate, the screw rod nut is threadedly connected to the screw rod, the driving motor is arranged on the left side of the second support plate, and the driving end of the driving motor is drivingly connected to one end of the screw rod; the guide rail is arranged on the right side of the second support plate along the length direction of the second support plate, and the track slider is slidably assembled on the guide rail; The front end of the upper support plate is hinged to the front proximal end of the first support plate, and the rear end of the upper support plate and the front end of the lower support plate are both hinged to the connecting shaft; the screw nut is provided with a first hinge seat, and the track slider is provided with a second hinge seat; the rear end of the lower support plate is hinged to the first hinge seat and the second hinge seat respectively; A placement groove is provided at the proximal end of the rear end of the lower support plate, and a pedal is provided below the placement groove, and the lower end of the pedal is hinged to the placement groove.

2. The postoperative knee joint recovery device according to claim 1, characterized in that: It also includes an angle measuring component, which includes a protractor plate, a first rotating rod and a second rotating rod, the protractor plate is provided with an angle scale, the protractor plate is arranged on one side of the connecting shaft, and the center point of the protractor plate coincides with the axial extension line of the connecting shaft; one end of the first rotating rod and the second rotating rod are both hinged to the center point of the protractor plate; a first support block is provided on the same side of the upper support plate, and the first rotating rod is tightly against the first support block, so that the upper end surface of the first rotating rod is parallel to the upper end surface of the upper support plate; a second support block is provided on the same side of the lower support plate, and the second rotating rod is tightly against the second support block, so that the upper end surface of the second rotating rod is parallel to the upper end surface of the lower support plate.

3. The postoperative knee joint recovery device according to claim 1, characterized in that: The base is provided with a plurality of installation grooves at intervals along the width direction of the bed body, the bottom of the first support plate is provided with a first installation bar, and the bottom of the second support plate is provided with a second installation bar; the first installation bar and the second installation bar are inserted into the corresponding installation grooves; The upper support plate includes a first upper plate, a first extension rod and a first lower plate; the first extension rod is arranged on the front end surface of the first lower plate, the rear end surface of the first lower plate is provided with a first plug hole adapted to the first extension rod, and the first extension rod is plugged into the first plug hole; The first lower plate is provided with first adjustment plates on the left and right sides respectively, and the first adjustment plates are provided with a plurality of first adjustment holes at intervals, and the first upper plate is provided with first fixing nuts and first fixing screw holes on the left and right sides; the first fixing nut passes through one of the first adjustment holes and is threadedly connected with the first fixing screw hole on the same side; The lower support plate includes a second upper plate, a second extension rod and a second lower plate; the second extension rod is arranged on the front end surface of the second lower plate, the rear end surface of the second lower plate is provided with a second plug hole adapted to the second extension rod, and the second extension rod is plugged into the second plug hole; A second adjustment plate is provided on the left and right sides of the second lower plate respectively, and a plurality of second adjustment holes are provided at intervals on the second adjustment plate; a second fixing nut and a second fixing screw hole are provided on the left and right sides of the second upper plate; the second fixing nut passes through one of the second adjustment holes and is threadedly connected with the second fixing screw hole on the same side.

4. The postoperative knee joint recovery device according to claim 1, characterized in that: The accommodating cavity is provided with a slide rail along the width direction of the bed body, and the bottom of the base is provided with a base slider matched with the slide rail, and the base slider is slidably assembled with the slide rail.

5. The postoperative knee joint recovery device according to claim 4, characterized in that: The accommodating cavity is further provided with a limiting rod, one end of which is hinged to the side wall of the accommodating cavity, and the limiting rod is centrally arranged along the length direction.

6. The postoperative knee joint recovery device according to claim 1, characterized in that: The front side wall and the rear side wall of the accommodating cavity are both provided with avoidance gaps. When the cover plate is arranged on the accommodating cavity, the cover plate is embedded in the avoidance gaps so that the top surface of the cover plate is flush with the top surface of the bed body.

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