Medical pedal device

Abstract

The invention relates to the field of medical seats, in particular to a medical pedal device. The medical pedal device comprises a pedal pad; a pedal support is arranged at the bottom of the pedal pad, the limiting pin is arranged on the inner side of the pedal support, a first bolt is arranged on the inner side of the limiting pin, a first gasket is arranged between the first bolt and the limiting pin, torsional springs are fixedly connected to the left side and the right side of the limiting pin, and the torsional springs are fixedly connected with the pedal support. The left outer side face and the right outer side face of the limiting pin are movably connected with two idle wheels. The problems that a fixed pedal cannot be adjusted at multiple angles and the extension length after being flattened are solved through the four stage states of the adjustable pedal, namely the 0-degree storage state, the 90-degree half-unfolded state, the 180-degree complete flattening state and the length telescopic adjusting state after being flattened by 180 degrees, and the dynamic limiting mechanism and the length telescopic function; and when the medical chair is combined for use, the body position comfort of a patient and the treatment applicability of medical staff are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of medical chairs, and more particularly to a medical foot pedal device and its use. Background Technology

[0002] A medical foot pedal is a medical assistive device operated by foot touch. It typically consists of a pedal and mechanical transmission components, and is made of stainless steel or engineering plastics to ensure durability and easy cleaning. The device usually has adjustable functions such as height, length and angle, and can be flexibly adjusted according to the operating needs of medical staff or the comfort of patients. It helps to reduce the pressure on patients' feet, promote blood circulation, and improve the convenience and safety of medical operations.

[0003] Traditional medical beds and chairs often have fixed footrests that can only be adjusted within a 0-90° range. This makes them unsuitable for patients changing their posture from sitting to lying down, forcing their lower limbs to remain in an unnatural bent state. Furthermore, the footrests of traditional medical beds and chairs lack an extension support structure and have limited length. If a patient's legs extend beyond the end of the bed or chair when they are lying flat, there will be nowhere for their feet to rest in different positions, leading to improper posture, fatigue, and affecting comfort and treatment efficiency.

[0004] Therefore, the footrests of traditional medical beds and chairs are mostly fixed designs, usually only adjustable within the range of 0-90°, which cannot adapt to the changing needs of patients from sitting to lying positions. This forces the lower limbs to maintain an unnatural bent state. The footrests of traditional medical beds and chairs lack an extension support structure and have limited length. When patients of different heights and body types lay their legs flat, if their feet extend beyond the end of the bed or chair, there will be nowhere for their feet to rest in different positions, which can lead to improper posture, fatigue, and affect comfort and treatment efficiency. Therefore, a medical footrest device can be designed. Summary of the Invention

[0005] To overcome the problem that traditional medical beds and chairs often have fixed footrests that can only be adjusted within a range of 0-90°, making it impossible to adapt to the changing postures of patients from sitting to lying down, and that patients' feet extend beyond the end of the bed or chair when their legs are flat, the lack of extended support structure means that patients have nowhere to place their feet in different positions, which can easily lead to fatigue and affect comfort and treatment efficiency.

[0006] The technical solution of the present invention is as follows: a medical foot pedal device, including a foot pedal pad; and a limiting pin, a foot pedal bracket provided at the bottom of the foot pedal pad, a limiting pin provided on the inner side of the foot pedal bracket, a bolt provided on the inner side of the limiting pin, a washer provided between the bolt and the limiting pin, torsion springs fixedly connected to the left and right sides of the limiting pin, the torsion springs fixedly connected to the foot pedal bracket, two idler wheels movably connected to the outer surface of the limiting pin, the surface of the idler wheels having limiting grooves and round holes, the limiting pin passing through the limiting grooves in the two idler wheels, a foot pedal fixing telescopic frame provided at the bottom of the limiting pin, second washers provided on the left and right sides of the foot pedal bracket, the second washers movably connected to the foot pedal bracket, a bearing provided on the outer surface of the idler wheel, the second bolt movably connected to the bearing, the second bolt movably connected to the foot pedal fixing telescopic frame, the second bolt passing through the round hole and movably connected to the idler wheel, and the second bolt movably connected to the second washer.

[0007] Preferably, the adjustable footrest with angle adjustment function solves the problems of fixed angle and limited function of traditional medical bed chair footrests. During use: Operation process in the 0° retracted state and 90° semi-open state: When the footrest is in the initial 0° retracted state, the user can gently turn the footrest 1 to rotate the footrest bracket 2 around the axis. The torsion spring 3 continuously provides pressure, pressing the limit pin 6 onto the idler wheel 8. In the outward turning state, the limit slot 8-1 of the idler wheel 8 can support the limit pin 6 until it passes the 90° slot, then... When the footpad 1 is flipped back, the pad 9 provides a certain amount of friction for the idler wheel 8 to be positioned. After the limit pin 6 slides back a short distance, it pushes the idler wheel 8. At this point, the idler wheel 8 can no longer prevent the limit pin 6 from falling. The pressure of the torsion spring 3 can press the limit pin 6 down onto the footpad telescopic bracket 7. When it is rotated to the angle where it can be engaged in the 90° slot, the limit pin 6 is engaged in the slot, thus restricting the footpad 1 and the footpad bracket 2 to the 90° positioning point, achieving a 90° semi-open state. At this time, the footpad 1 cannot be directly flipped outward to 180°, but it can be directly returned to 0° to retract. Position of the foot pad in the flat state; 180° fully flat state operation procedure: The foot pad 1 can be moved directly from the 0° position to rotate the foot support 2 around the axis to the 180° positioning point. Alternatively, at the 90° positioning point, the foot pad 1 and foot support 2 can be moved back a certain angle. After the limit pin 6 slides out of the 90° slot, the foot pad 1 can be moved outwards. At this time, the limit slot 8-1 of the idler wheel 8 can prevent the limit pin 6 from engaging in the 90° slot. Then, the foot pad can be moved to the 180° limit point. Both operation procedures are acceptable. It allows the footrest to be fully extended to 180°. With the footrest fully extended at 180°, the built-in telescopic mechanism can extend the footrest outward. When applied to a chair, this extends the overall length of the chair, thus adapting to the needs of users of different heights and body types. This breaks through the limitation of traditional footrests that can only be adjusted from 0-90°, and also solves the problem that in certain positions, patients of different heights and body types may have their legs extended beyond the end of the bed or chair, but there is no extension structure to support their feet.

[0008] Preferably, the foot pedal bracket is provided with a cover, and a cover plate is fixedly connected to the outer surface of the cover.

[0009] Preferably, the foot-operated telescopic frame is equipped with a calf pad at the rear end, and an electric cylinder is installed at the bottom of the calf pad.

[0010] Preferably, a connecting rod is fixedly connected to the output end of the electric cylinder, and the electric cylinder is used to drive the connecting rod to move back and forth.

[0011] Preferably, the connecting rod is rotatably connected to the foot pedal telescopic frame, and two sliding rods are fixedly connected to the rear end of the foot pedal telescopic frame.

[0012] Preferably, the bottom of the base plate is fixedly connected to four fixing blocks, and the slide rod is slidably connected to the fixing blocks.

[0013] Preferably, the outer surface of the foot mat has anti-slip texture, and the outer surface of the foot mat is made of high-density sponge material.

[0014] The beneficial effects of this invention are: The adjustable foot pedal with angle adjustment function solves the problems of fixed angle and single function of traditional medical bed chair foot pedals. During use: 0° storage state and 90° semi-expanded state operation process: When the foot pedal is in the initial position 0° storage state, the user can gently move the foot pedal (1) to drive the foot pedal bracket 2 to rotate around the axis. The torsion spring 3 continuously provides pressure to press the limit pin 6 onto the idler wheel 8. In the case of external bending, the limit slot 8-1 of the idler wheel 8 can support the limit pin 6 until it passes the 90° slot, and then When the footpad 1 is flipped back, the pad 9 provides a certain amount of friction for the idler wheel 8 to be positioned. After the limit pin 6 slides back a short distance, it pushes the idler wheel 8. At this point, the idler wheel 8 can no longer prevent the limit pin 6 from falling. The pressure of the torsion spring 3 can press the limit pin 6 down onto the footpad telescopic bracket 7. When it is rotated to the angle where it can be inserted into the 90° slot, the limit pin 6 is inserted into the slot, thus restricting the footpad 1 and the footpad bracket 2 to the 90° positioning point, achieving a 90° semi-open state. At this time, the footpad 1 cannot be directly flipped out to 180°, but it can be directly returned to 0° for storage. Position of the pedal pad; 180° fully flat state. Operation procedure: When the pedal pad 1 is at the 0° position, directly move the pedal pad 1 to rotate the pedal bracket 2 around the axis to the 180° positioning point. Alternatively, when at the 90° positioning point, move the pedal pad 1 and pedal bracket 2 back a certain angle. After the limit pin 6 slides out of the 90° slot, move the pedal pad 1 outward. At this time, the limit slot 8-1 of the idler wheel 8 can prevent the limit pin 6 from engaging in the 90° slot. Then move the pedal pad to the 180° limit point. Both operation procedures are acceptable. This device allows the footrest to be fully extended to 180°. From this fully extended position, a built-in telescopic mechanism extends the footrest outwards, increasing the overall length of the chair when used with it. This adapts to users of different heights and body types, overcoming the limitations of traditional footrests that can only be adjusted from 0-90°. It also solves the problem of patients of different heights and body types having their legs extended beyond the end of the bed or chair in certain positions, without the need for an extension structure to support their feet. Integrating angle and length adjustment functions improves lower limb support comfort for patients, providing an innovative solution for the humanized design of medical and nursing equipment. Attached Figure Description

[0015] Figure 1 The diagram shown is an exploded three-dimensional structural schematic of the present invention; Figure 2The diagram shown is a three-dimensional lower view of the structure of the present invention; Figure 3 The diagram shown is a three-dimensional left cross-sectional view of the foot pad of the present invention at 0°. Figure 4 The diagram shown is a 90° perspective view of the footrest structure of the present invention; Figure 5 The diagram shown is a three-dimensional structural schematic of the 90° unlocking point of the footrest of the present invention. Figure 6 The diagram shown is a three-dimensional structural diagram of the 180° unlocking point of the footrest of the present invention; Figure 7 The diagram shown is a three-dimensional structural schematic of the idler wheel of the present invention.

[0016] Explanation of reference numerals in the attached drawings: 1. Foot pad; 2. Foot pedal bracket; 3. Torsion spring; 4. Bolt 1; 5. Washer 1; 6. Limit pin; 7. Foot pedal fixed telescopic frame; 8. Idler wheel; 8-1. Limit slot; 8-2. Round hole; 9. Washer 2; 10. Bearing; 11. Bolt 2; 12. Cover; 13. Cover plate; 14. Lower leg pad; 15. Electric cylinder; 16. Connecting rod; 17. Slide rod; 18. Fixing block. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figures 1-5 This invention provides an embodiment: a medical foot pedal device includes a foot pedal pad 1; it also includes a limiting pin 6, a foot pedal bracket 2 is provided at the bottom of the foot pedal pad 1, the limiting pin 6 is provided on the inner side of the foot pedal bracket 2, a bolt 4 is provided on the inner side of the limiting pin 6, a washer 5 is provided between the bolt 4 and the limiting pin 6, torsion springs 3 are fixedly connected to the left and right sides of the limiting pin 6, the torsion springs 3 are fixedly connected to the foot pedal bracket 2, and two idler wheels 8 are movably connected to the outer surface of the limiting pin 6, the surfaces of the idler wheels 8 are opened The device has a limiting slot 8-1 and a round hole 8-2. A limiting pin 6 passes through the limiting slot 8-1 inside the two idler wheels 8. A foot pedal fixing telescopic bracket 7 is provided at the bottom of the limiting pin 6. Washers 9 are provided on the left and right sides of the foot pedal bracket 2. Washers 9 are movably connected to the foot pedal bracket 2. A bearing 10 is provided on the outer surface of the idler wheel 8. Bolt 11 is movably connected to the bearing 10, the foot pedal fixing telescopic bracket 7, passes through the round hole 8-2, and is movably connected to the idler wheel 8. Bolt 11 is also movably connected to washer 9. The adjustable foot pedal with angle adjustment function solves the problems of fixed angle and single function of traditional medical bed chair foot pedals. During use: 0° storage state and 90° semi-expanded state operation process: When the foot pedal is in the initial position 0° storage state, the user can gently move the foot pedal (1) to drive the foot pedal bracket 2 to rotate around the axis. The torsion spring 3 continuously provides pressure to press the limit pin 6 onto the idler wheel 8. In the case of external bending, the limit slot 8-1 of the idler wheel 8 can support the limit pin 6 until it passes the 90° slot, and then When the footpad 1 is flipped back, the pad 9 provides a certain amount of friction for the idler wheel 8 to be positioned. After the limit pin 6 slides back a short distance, it pushes the idler wheel 8. At this point, the idler wheel 8 can no longer prevent the limit pin 6 from falling. The pressure of the torsion spring 3 can press the limit pin 6 down onto the footpad telescopic bracket 7. When it is rotated to the angle where it can be inserted into the 90° slot, the limit pin 6 is inserted into the slot, thus restricting the footpad 1 and the footpad bracket 2 to the 90° positioning point, achieving a 90° semi-open state. At this time, the footpad 1 cannot be directly flipped out to 180°, but it can be directly returned to 0° for storage. Position of the pedal pad; 180° fully flat state. Operation procedure: When the pedal pad 1 is at the 0° position, directly move the pedal pad 1 to rotate the pedal bracket 2 around the axis to the 180° positioning point. Alternatively, when at the 90° positioning point, move the pedal pad 1 and pedal bracket 2 back a certain angle. After the limit pin 6 slides out of the 90° slot, move the pedal pad 1 outward. At this time, the limit slot 8-1 of the idler wheel 8 can prevent the limit pin 6 from engaging in the 90° slot. Then move the pedal pad to the 180° limit point. Both operation procedures are acceptable. This device allows the footrest to be fully extended to 180°. From this fully extended position, a built-in telescopic mechanism extends the footrest outwards, increasing the overall length of the chair when used with it. This adapts to users of different heights and body types, overcoming the limitations of traditional footrests that can only be adjusted from 0-90°. It also solves the problem of patients of different heights and body types having their legs extended beyond the end of the bed or chair in certain positions, without the need for an extension structure to support their feet. Integrating angle adjustment and length functionality improves lower limb support comfort for patients, providing an innovative solution for the humanized design of medical and nursing equipment.

[0019] Please see Figures 1-2In this embodiment, a cover 12 is provided around the foot pedal bracket 2. A cover plate 13 is fixedly connected to the outer surface of the cover 12. The cover 12 is fixed to the foot pedal fixed telescopic frame 7 by bolts 11. Then, the cover plate 13 is fixed to the cover 12 to protect the internal parts. A calf pad 14 is provided at the rear end of the foot pedal fixed telescopic frame 7. An electric cylinder 15 is provided at the bottom of the calf pad 14. The electric cylinder 15 provides power for the rotation of the foot pedal. A connecting rod 16 is fixedly connected to the output end of the electric cylinder 15. The electric cylinder 15 is used to drive the connecting rod 16 to move back and forth. The electric cylinder 15 provides power so that the connecting rod 16 can extend and retract and drive the foot pedal fixed telescopic frame 7 to move back and forth, so that the foot pad 1 can move back and forth when it is in a 180° fully flat state to change the overall length of the seat.

[0020] Please see Figures 1-2 In this embodiment, the connecting rod 16 is rotatably connected to the foot pedal fixed telescopic frame 7. Two sliding rods 17 are fixedly connected to the rear end of the foot pedal fixed telescopic frame 7. At the same time, the sliding rods 17 at the rear end of the foot pedal fixed telescopic frame 7 slide on the fixed block 18. Four fixed blocks 18 are fixedly connected to the bottom of the base plate. The sliding rods 17 are slidably connected to the fixed blocks 18. The outer surface of the foot pad 1 is provided with anti-slip texture. The outer surface of the foot pad 1 is made of high-density sponge material. The high-density sponge used in the foot pad 1 provides users with a more comfortable user experience. At the same time, the anti-slip texture can prevent users' feet from slipping.

[0021] During operation, the cover 12 is fixed to the footrest telescopic frame 7 by bolts 11, and then the cover plate 13 is fixed to the cover 12 to protect the internal parts. The electric cylinder 15 provides power to extend and retract the connecting rod 16 and drive the footrest telescopic frame 7 to move back and forth. At the same time, the slide rod 17 at the rear end of the footrest telescopic frame 7 slides on the fixing block 18, so that the footrest 1 can move back and forth to change the overall length of the seat when it is in a fully flat 180° state; it can also be operated in a 0° folded state and a 90° semi-open state. Procedure: When the foot pad is in its initial 0° retracted position, the user can gently turn the foot pad (1) to rotate the foot support 2 around the axis. The torsion spring 3 continuously provides pressure to press the limit pin 6 onto the idler wheel 8. In the case of external turning, the limit slot 8-1 of the idler wheel 8 can support the limit pin 6 until it passes the 90° slot. Then, turn the foot pad 1 back. The pad 9 provides a certain friction force for the idler wheel 8 for positioning. After the limit pin 6 slides a little distance in the opposite direction, it pushes the idler wheel 8. At this time, the idler wheel 8 can no longer prevent the limit pin 6 from falling. The pressure of the torsion spring 3 can... Press the limiting pin 6 down onto the foot pedal telescopic bracket 7. When rotated to the angle where it can be engaged in the 90° slot, the limiting pin 6 engages in the slot, thus restricting the foot pad 1 and foot pedal bracket 2 to the 90° positioning point, achieving a 90° semi-open state. At this time, the foot pad 1 cannot be directly flipped outward to 180°, but can be directly returned to the 0° folded position. The operation procedure for the 180° fully flat state is as follows: The foot pad 1 can be moved directly from the 0° position to rotate the foot pedal bracket 2 around the axis to the 180° positioning point, or it can be moved from the 90° position... When positioning, turn the foot pad 1 and foot support 2 back a certain angle. After the limiting pin 6 slides out of the 90° slot, turn the foot pad 1 outward. At this time, the limiting slot 8-1 of the idler wheel 8 can prevent the limiting pin 6 from engaging in the 90° slot. Then turn the foot pad to the 180° limiting point. Both operation procedures can achieve the foot pad being turned to a completely flat 180° state. The high-density sponge used in the foot pad 1 provides users with a more comfortable user experience, while the anti-slip texture can prevent the user's feet from slipping. The operation procedure is as follows: 180° fully flat state: The foot pad 1 is flipped outwards directly under the support of the idler wheel 8, and the limit pin 6 can cross the 90° slot and flip directly to the 180° fully flat state. 90° semi-open state: The foot pad 1 rotates from 180° to 90°, the limiting pin 6 enters the 90° slot range, and is pushed by the torsion spring 3 to lock into the 90° slot, flipping the foot pad 1 to the 90° semi-open state; 0° storage state: When foot pad 1 is moved from 90° to 0°, foot pad 1 can directly return to the 0° storage state; 180° Flattened Length Adjustable State: With the footrest fully flattened at 180°, the built-in telescopic mechanism can extend the footrest outwards, thereby increasing the overall length of the seat.

[0022] Through the above steps, the operation procedures for the 0° retracted state and the 90° semi-expanded state are as follows: When the footpad is in the initial 0° retracted state, the user can gently turn the footpad 1 to rotate the footrest bracket 2 around the axis. The torsion spring 3 continuously provides pressure to press the limit pin 6 onto the idler wheel 8. In the outward turning case, the limit slot 8-1 of the idler wheel 8 can support the limit pin 6 until it passes the 90° slot. Then, the footpad 1 is turned back. The pad 9 provides a certain friction force for the idler wheel 8 for positioning and limiting. After pin 6 slides back a short distance, it pushes idler wheel 8. At this point, idler wheel 8 can no longer obstruct the falling of limit pin 6. The pressure of torsion spring 3 can press limit pin 6 down onto foot pedal telescopic bracket 7. When it rotates to the angle where it can be inserted into the 90° slot, limit pin 6 is inserted into the slot, thus restricting foot pad 1 and foot pedal bracket 2 to the 90° positioning point, achieving a 90° semi-open state. At this time, foot pad 1 cannot be directly flipped outward to 180°, but can be directly returned to the 0° folded position; 180° fully unfolded... Fully flattened operation procedure: The footrest 1 can be moved directly from the 0° position to rotate the footrest bracket 2 around the axis to the 180° positioning point. Alternatively, at the 90° positioning point, the footrest 1 and footrest bracket 2 can be moved back a certain angle. After the limiting pin 6 slides out of the 90° slot, the footrest 1 can be moved outwards. At this time, the limiting slot 8-1 of the idler wheel 8 can prevent the limiting pin 6 from engaging in the 90° slot. Then, the footrest 1 can be moved to the 180° limiting point. Both operation procedures can achieve the footrest 180° fully flattened state. This addresses the problem that traditional medical beds and chairs often have fixed footrest designs, typically adjustable only within the 0-90° range, failing to adapt to changes in patient posture from sitting to lying down. Patients of different heights and body types may have their feet extend beyond the end of the bed or chair when their legs are flat, lacking extended support structures. This results in patients having nowhere to place their feet in different positions, leading to fatigue and affecting comfort and treatment efficiency.

Claims

1. A medical foot pedal device, comprising a foot pedal pad (1); characterized in that: It also includes a limit pin (6), a foot pedal bracket (2) is provided at the bottom of the foot pad (1), a limit pin (6) is provided on the inner side of the foot pedal bracket (2), a bolt (4) is provided on the inner side of the limit pin (6), a washer (5) is provided between the bolt (4) and the limit pin (6), torsion springs (3) are fixedly connected to the left and right sides of the limit pin (6), the torsion springs (3) are fixedly connected to the foot pedal bracket (2), and two idler wheels (8) are movably connected to the outer surface of the limit pin (6). The surface of the idler wheels (8) is provided with a limit groove (8-1) and a round hole (8-2). The limit pin (6) passes through the limiting slot (8-1) in the two idler wheels (8). The bottom of the limit pin (6) is provided with a foot pedal fixed telescopic frame (7). The foot pedal bracket (2) is provided with a second shim (9) on the left and right sides. The second shim (9) is movably connected to the foot pedal bracket (2). The outer surface of the idler wheel (8) is provided with a bearing (10). The second bolt (11) is movably connected to the bearing (10). The second bolt (11) is movably connected to the foot pedal fixed telescopic frame (7). The second bolt (11) passes through the round hole (8-2) and is movably connected to the idler wheel (8). The second bolt (11) is movably connected to the second shim (9).

2. The medical foot pedal device according to claim 1, characterized in that: The foot support (2) is provided with a cover (12) on its periphery, and a cover plate (13) is fixedly connected to the outer surface of the cover (12).

3. A medical foot pedal device according to claim 2, characterized in that: The rear end of the foot-operated telescopic frame (7) is provided with a calf pad (14), and the bottom of the calf pad (14) is provided with an electric cylinder (15).

4. A medical foot pedal device according to claim 1, characterized in that: The output end of the electric cylinder (15) is fixedly connected to a connecting rod (16), and the electric cylinder (15) is used to drive the connecting rod (16) to move back and forth.

5. A medical foot pedal device according to claim 1, characterized in that: The connecting rod (16) is rotatably connected to the foot pedal fixed telescopic frame (7), and the rear end of the foot pedal fixed telescopic frame (7) is fixedly connected to two sliding rods (17).

6. A medical foot pedal device according to claim 5, characterized in that: The bottom of the base plate is fixedly connected to four fixed blocks (18), and the slide rod (17) is slidably connected to the fixed blocks (18).

7. A medical foot pedal device according to claim 1, characterized in that: The outer surface of the foot mat (1) is provided with anti-slip texture, and the outer surface of the foot mat (1) is made of high-density sponge material.

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