CN211750847U

CN211750847U - Lower limb joint rehabilitation device

Info

Publication number: CN211750847U
Application number: CN202020048829.XU
Authority: CN
Inventors: 严红成
Original assignee: HANGZHOU ZHENGDA MEDICAL CO Ltd
Current assignee: HANGZHOU ZHENGDA MEDICAL CO Ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-10-27
Anticipated expiration: 2030-01-10

Abstract

The utility model relates to the technical field of medical equipment, and discloses a lower limb joint rehabilitation device, which comprises a driving mechanism, a shank supporting rod part, a thigh supporting rod part, a first base and a second base, wherein the driving mechanism is connected with a sliding block in a sliding way, the shank supporting rod part is hinged with the thigh supporting rod part, and one end of the shank supporting rod part, which is far away from the thigh supporting rod part, is hinged with a foot bracket; the driving mechanism is arranged between the first base and the second base, a first push rod and a second push rod are hinged to the sliding block, one end, far away from the sliding block, of the first push rod is hinged to the shank supporting rod, a first connecting rod is hinged to the first base and the shank supporting rod, one end, far away from the sliding block, of the second push rod is hinged to the first connecting rod, and a second connecting rod is hinged to the thigh supporting rod. The utility model discloses a two connecting rod designs, can improve equipment's support stability to can shorten the distance of mechanical operation under the condition that reaches same joint motion angle.

Description

Lower limb joint rehabilitation device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a lower limb joint rehabilitation device.

Background

The continuous passive motion of human joints is an effective method for preventing postoperative joint adhesion and promoting the functional recovery of joint motion, and the lower limb joint rehabilitation training device developed based on the method is widely used at home and abroad at present. Currently, lower limb joint rehabilitation devices used clinically generally adopt a simple connecting rod support mechanical structure, act on knee joints and hip joints of patients to perform active and passive treatment, and the acting force is driven by an external motor or the human body moves autonomously.

For example, patent scheme for patent No. CN200320108526.9, it includes the casing, outer frame, lower limbs bracket and drive mechanism and control circuit who sets up in the casing, wherein be equipped with the spliced pole on the pull rod of outer frame one end, lower limbs bracket comprises shank support and thigh support that link together through rotating the festival head, the other end of shank support is equipped with telescopic link and foot support, its main characteristics are that the equal rigid coupling in shank support both sides has a lower extreme by drive mechanism driven push rod, shank support both sides still the pivot is equipped with the bracing piece, the bracing piece lower extreme cup joints on the connecting rod with spliced pole swing joint, the pivot is equipped with the connection piece on the thigh support, the pin joint of the other end of connection piece is on the bracing piece.

Although the above patent is applicable to rehabilitation treatment for recovering or maintaining normal physiological functions of lower limb joints after surgical treatment of orthopedic and rehabilitation patients in various hospitals, these lower limb rehabilitation devices using a single connecting rod all have a simple connecting rod supporting mechanical structure with 3 motion hinge points to support and move the lower limbs of the human body. However, because the lower limb rehabilitation device only has a simple connecting rod supporting mechanical structure, in actual use, the thigh rod supporting is not very stable due to the influence of the gap generated by the manufacturing and abrasion of the mechanical structure and the comprehensive factors of the weight of a patient and the like, so that the overall stability is poor, and the movement physiological curve conformance is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a lower limb joint rehabilitation device, which can improve the support stability of the device and shorten the mechanical movement distance under the condition of reaching the same joint movement angle by the double-link design.

The utility model discloses an above-mentioned technical problem is solved to following technical means:

a lower limb joint rehabilitation device comprises a driving mechanism, a shank supporting rod piece and a thigh supporting rod piece, wherein a sliding block is connected to the driving mechanism in a sliding mode, the shank supporting rod piece is hinged to the thigh supporting rod piece, and a foot bracket is hinged to one end, far away from the thigh supporting rod piece, of the shank supporting rod piece; the novel leg supporting device is characterized by further comprising a first base and a second base, the driving mechanism is arranged between the first base and the second base, a first push rod and a second push rod are hinged to the slider, one end, far away from the slider, of the first push rod is hinged to a leg supporting rod, a first connecting rod is hinged to the first base and the leg supporting rod, one end, far away from the slider, of the second push rod is hinged to the first connecting rod, and a second connecting rod is hinged to the first connecting rod and the thigh supporting rod.

Further, actuating mechanism includes driving motor and lead screw, driving motor sets up in the second base, be provided with the screw through-hole on the slider, the slider passes through screw through-hole and lead screw threaded connection, the one end and the driving motor fixed connection of lead screw, the other end and the first base of lead screw rotate to be connected. The rotation of the driving motor drives the screw rod to rotate, the rotation of the screw rod is converted into horizontal movement of the sliding block, the sliding block moves horizontally, and then the sliding block drives the first push rod and the second push rod to move, so that the movement of the shank support rod piece is realized.

Furthermore, a speed reducer is fixedly connected between the driving motor and the screw rod. The speed reducer can reduce the rotating speed of the driving motor, and the required movement speed of the lower limb rehabilitation device is achieved.

Further, a display and a microcomputer central processing unit are arranged on the second base, the display is electrically connected with an AD converter, the driving motor is electrically connected with a motor controller, and the AD converter and the motor controller are both in communication connection with the microcomputer central processing unit. The display, the AD converter and the microcomputer central processing unit can control all the motion data of the patient by the microcomputer central processing unit and display the motion data by the liquid crystal display controller.

Furthermore, a rotary joint is arranged at the joint of the shank supporting rod piece and the thigh supporting rod piece, and the shank supporting rod piece and the thigh supporting rod piece are both hinged on the rotary joint. Therefore, the shank supporting rod piece and the thigh supporting rod piece can be hinged and connected, the rotary joint pad is arranged at the knee joint of a human body, a supporting effect is achieved, and the comfort of a patient is stronger.

Furthermore, a shelf is fixedly connected to one side of the thigh supporting rod piece close to the first connecting rod. The shelf has a certain depth, so that the rotation center point of the knee joint of the patient is basically consistent with the rotation center point of the rotation joint of the lower leg support rod piece, the angle loss is reduced, and the treatment efficacy of the lower limb joint rehabilitation device is greatly improved.

The utility model has the advantages that:

1. the utility model uses the driving motor to output power, the reducer reduces the speed to drive the screw rod to rotate, then the slide block outputs linear motion, and then the first push rod drives the shank supporting rod piece, after the shank supporting rod piece moves, the thigh supporting rod piece moves along with the shank supporting rod piece, so that the knee joint and the hip joint of the human body generate angular motion; the whole structure adopts a double-connecting-rod supporting mechanism, has six motion hinge points, and the shank supporting rod piece can be supported by more reliable motion, so that the supporting stability of the device is stronger.

2. The utility model discloses because the angle of many connecting rods compound motion characteristic of each other, two connecting rod structures can produce great angle change with less movement distance, reach better physiological curve compliance, will be of value to the length and size who subtracts short equipment, bring certain convenient to use to clinical use.

Drawings

Fig. 1 is a schematic structural view of a lower limb joint rehabilitation device of the present invention;

FIG. 2 is a schematic view of the drive mechanism of FIG. 1;

fig. 3 is a schematic diagram of the circuit system in fig. 1.

The leg support device comprises a shank support rod 1, a thigh support rod 2, a first base 3, a second base 4, a sliding block 5, a rotary joint 6, a foot bracket 7, a driving motor 8, a screw rod 9, a speed reducer 10, a first push rod 11, a second push rod 12, a first connecting rod 13, a second connecting rod 14, a shelf 15, a display 16, a microcomputer central processing unit 17, a motor controller 18 and an AD converter 19.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings:

as shown in fig. 1 to 3:

a lower limb joint rehabilitation device comprises a driving mechanism, a shank supporting rod 1, a thigh supporting rod 2, a first base 3 and a second base 4, wherein a sliding block 5 is connected to the driving mechanism in a sliding mode, the shank supporting rod 1 is hinged to the thigh supporting rod 2, a rotating joint 6 is installed at the connecting position of the shank supporting rod 1 and the thigh supporting rod 2, a sleeve is integrally formed at the end portion of the shank supporting rod 1 and the end portion of the thigh supporting rod 2, the sleeve is sleeved on the rotating joint 6 in a sliding mode, the shank supporting rod 1 and the thigh supporting rod 2 are both hinged to the rotating joint 6, and a foot bracket 7 is hinged to one end, far away from the thigh supporting rod 2, of the shank supporting rod 1. Actuating mechanism sets up between first base 3 and second base 4, actuating mechanism includes driving motor 8 and lead screw 9, driving motor 8 sets up in second base 4, threaded through hole has been seted up on slider 5, slider 5 passes through threaded through hole and lead screw 9 threaded connection, the one end fixedly connected with reduction gear 10 of lead screw 9, reduction gear 10 is connected with driving motor 8, the blind hole has been seted up on first base 3, the other end of lead screw 9 inserts in the blind hole, make the other end of lead screw 9 can be at the 3 internal rotations of first base. A first push rod 11 and a second push rod 12 are hinged to the sliding block 5, one end, far away from the sliding block 5, of the first push rod 11 is hinged to the lower leg supporting rod 1 through a rotating shaft, a first connecting rod 13 is hinged between the first base 3 and the lower leg supporting rod 1, one end, far away from the sliding block 5, of the second push rod 12 is hinged to the first connecting rod 13 through a rotating shaft, a second connecting rod 14 is hinged between the first connecting rod 13 and the thigh supporting rod 2, and a shelf 15 is fixedly connected to one side, close to the first connecting rod 13, of the thigh supporting rod 2. The second base 4 is provided with a display 16 and a microcomputer central processing unit 17, the display 16 is electrically connected with an AD converter 19, the microcomputer central processing unit 17 is a single chip microcomputer, the driving motor 8 is electrically connected with a motor controller 18, and the AD converter 19 and the motor controller 18 are in communication connection with the microcomputer central processing unit 17.

In addition, the lower leg support rod 1, the thigh support rod 2 and the foot bracket 7 can be provided with binding belts with hook and loop tapes and hook and loop tapes for binding and fixing feet, lower legs and thighs of the human body. The utility model discloses a use method as follows:

when the utility model is used, as shown by the dotted line in fig. 1, the dotted line represents the lower half of the human body; the feet of the patient are placed on the foot bracket 7, the shanks are placed on the shank supporting rods 1, the thighs are placed on the thigh supporting rods 2, the knee joints are located at the rotary joints 6, and then the patient is tightly bound by the binding bands to avoid looseness.

Then starting a driving motor 8, reducing the speed of the driving motor 8 through a speed reducer 10, driving a screw rod 9 to rotate, driving a sliding block 5 to slide left and right through the rotation of the screw rod 9, driving a first push rod 11 and a second push rod 12 to move in the sliding process of the sliding block 5, further driving a shank supporting rod 1 through the first push rod 11, and enabling a thigh supporting rod 2 to move along with the shank supporting rod 1 after the shank supporting rod 1 moves, so that the knee joint and the hip joint of a human body generate angular motion; the whole structure adopts a connecting rod supporting mechanism with at least six motion hinge points of double connecting rods, and the lower leg supporting rod 1 can be supported by more reliable motion; meanwhile, due to the characteristic that the angles of the multiple connecting rods are mutually compounded in motion, the double-connecting-rod structure can use a smaller motion distance to generate larger angle change, better physiological curve conformity is achieved, the length size of equipment can be reduced beneficially, and certain use convenience is brought to clinical use.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims. The technology, shape and construction parts which are not described in detail in the present invention are all known technology.

Claims

1. A lower limb joint rehabilitation device comprises a driving mechanism, a shank supporting rod piece and a thigh supporting rod piece, wherein a sliding block is connected to the driving mechanism in a sliding mode, the shank supporting rod piece is hinged to the thigh supporting rod piece, and a foot bracket is hinged to one end, far away from the thigh supporting rod piece, of the shank supporting rod piece; the method is characterized in that: the novel leg supporting device is characterized by further comprising a first base and a second base, the driving mechanism is arranged between the first base and the second base, a first push rod and a second push rod are hinged to the slider, one end, far away from the slider, of the first push rod is hinged to a leg supporting rod, a first connecting rod is hinged between the first base and the leg supporting rod, one end, far away from the slider, of the second push rod is hinged to the first connecting rod, and a second connecting rod is hinged between the first connecting rod and a thigh supporting rod.

2. The lower limb joint rehabilitation device according to claim 1, wherein: the driving mechanism comprises a driving motor and a screw rod, the driving motor is arranged in the second base, a threaded through hole is formed in the sliding block, the sliding block is in threaded connection with the screw rod through the threaded through hole, one end of the screw rod is fixedly connected with the driving motor, and the other end of the screw rod is rotatably connected with the first base.

3. The lower limb joint rehabilitation device according to claim 2, wherein: and a speed reducer is connected between the driving motor and the screw rod.

4. The lower limb joint rehabilitation device according to claim 3, wherein: the second base is provided with a display and a microcomputer central processing unit, the display is electrically connected with an AD converter, the driving motor is electrically connected with a motor controller, and the AD converter and the motor controller are both in communication connection with the microcomputer central processing unit.

5. The lower limb joint rehabilitation device according to claim 4, wherein: the joint of the shank supporting rod and the thigh supporting rod is provided with a rotary joint, and the shank supporting rod and the thigh supporting rod are both hinged on the rotary joint.

6. The lower limb joint rehabilitation device according to any one of claims 1 to 5, wherein: and a shelf is fixedly connected to one side of the thigh supporting rod piece close to the first connecting rod.