CN221384214U - Elbow joint bending and stretching training device for upper limb fracture - Google Patents

Abstract

The utility model belongs to the technical field of orthopedic rehabilitation equipment, and in particular, relates to an elbow flexion and extension training device for upper limb fractures, comprising a base plate; a forearm support plate is arranged above the base plate, two first vertical plates are arranged between the forearm support plate and the base plate, and a hinge assembly is arranged between the tops of the two first vertical plates, and the right end bottom of the forearm support plate is hinged to the two first vertical plates through the hinge assembly; a telescopic mechanism is arranged between the forearm support plate and the base plate, and the telescopic mechanism is used to drive the forearm support plate to rotate; a plurality of binding belts for binding and fixing the human forearm to the forearm support plate are arranged at intervals along the length direction of the forearm support plate. The training device can assist the patient's upper limbs in performing automated elbow flexion and extension training, free the hands of the nursing staff, and reduce the nursing staff's workload.

Description

An elbow flexion and extension training device for upper limb fracture

Technical Field

The utility model belongs to the technical field of orthopedic rehabilitation equipment, in particular to an elbow flexion and extension training device for upper limb fractures.

Background technique

A fracture refers to a complete or partial break in the continuity of a bone structure. The ultimate goal of treating a fracture is to restore the function of the injured limb to the maximum extent possible. In fracture treatment, the three basic principles of reduction, fixation, and functional exercise are very important. Rehabilitation care after an upper limb fracture is related to the therapeutic recovery effect of the upper limb.

Elbow flexion and extension training is one of the functional exercises for upper limb fractures. When providing rehabilitation care for patients with upper limb fractures, the nurse fixes the patient's upper arm with one hand, holds the patient's wrist with the other hand, and bends the patient's forearm with the hand to flex the elbow. Although it is the nurse's responsibility to help patients with upper limb fracture elbow flexion and extension training, this also increases the nursing staff's labor force. In today's rapidly developing technology, it is necessary to use automated devices to help patients with upper limb fracture elbow flexion and extension training, so as to reduce the workload of nursing staff.

Utility Model Content

In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide an elbow flexion and extension training device for upper limb fractures, which is used to assist patients in performing elbow flexion and extension training for upper limb fractures, freeing up the hands of caregivers and reducing the workload of caregivers.

The utility model is realized by the following technical solutions:

An upper limb fracture elbow flexion and extension training device comprises a bottom plate, a forearm support plate is arranged above the bottom plate, two first vertical plates are arranged between the forearm support plate and the bottom plate and are parallel and spaced in a front-to-back direction, the bottom end of each first vertical plate is fixedly connected to the bottom plate, a hinge assembly is arranged between the top ends of the two first vertical plates, and the right end bottom of the forearm support plate is hinged to the two first vertical plates through the hinge assembly;

A telescopic mechanism is provided between the forearm support plate and the bottom plate, the bottom end of the telescopic mechanism is hinged to the bottom plate, the top end of the piston rod of the telescopic mechanism is hinged to the bottom of the left end of the forearm support plate, and the telescopic mechanism is used to drive the forearm support plate to rotate;

The forearm support plate is provided with a plurality of restraining straps at intervals along its length direction for binding and fixing the forearm of a human body on the forearm support plate;

When patients with upper limb fractures perform elbow flexion and extension training, the patient's forearm is tied and fixed on the forearm support plate by multiple straps. The telescopic mechanism is connected to an external power supply and a controller to control the operation of the telescopic mechanism. When the piston rod of the telescopic mechanism reciprocates and retracts, the piston rod of the telescopic mechanism drives the forearm support plate to reciprocate at the hinge assembly to perform elbow flexion and extension training for the patient. The automated auxiliary training device can free the caregiver's hands and reduce the caregiver's workload.

Furthermore, the forearm support plate is an arc-shaped plate with an arc-shaped cross-section. The patient's forearm is placed on the inner side of the forearm support plate, and the forearm support plate half-wraps the forearm, which can improve the connection stability of the forearm.

Furthermore, the inner wall of the forearm support plate is provided with a first cushion layer, which can improve comfort and avoid pressure injuries.

Furthermore, the front side wall and the rear side wall of the forearm support plate are both provided with a plurality of connecting rings, and the plurality of connecting rings are spaced apart along the length direction of the forearm support plate, and each connecting ring is hingedly mounted on the side wall of the forearm support plate; the plurality of connecting rings on the front side wall of the forearm support plate correspond one by one to the plurality of connecting rings on the rear side wall thereof, and each corresponds one by one to a plurality of restraints, one end of the restraints is fixed to the connecting ring on the rear side wall of the forearm support plate, and the front end of the restraints passes around the connecting ring on the front side wall of the forearm support plate and is connected to the middle section thereof by Velcro, which can facilitate adjustment of the tightness of the restraints for binding the forearm.

Furthermore, two second vertical plates are arranged between the left end of the forearm support plate and the base plate and are spaced parallel to each other in the front-to-back direction. The bottom end of each second vertical plate is fixedly connected to the base plate. The two second vertical plates are used to support the left end of the forearm support plate. When the piston rod of the telescopic mechanism contracts and the forearm support plate gradually becomes horizontal, the two second vertical plates can limit and support the left end of the forearm support plate to prevent the left end of the forearm support plate from continuing to rotate downward.

Furthermore, a shock-absorbing sleeve is installed at the top of each of the second vertical plates. When the left bottom of the forearm support plate contacts the top of the second vertical plate, the shock-absorbing sleeve can buffer and absorb shock, thereby reducing the shock impact on the forearm.

Furthermore, the top end of the piston rod of the telescopic mechanism is detachably hinged to the bottom left end of the forearm support plate;

The hinge assembly includes a hinge shaft, which is installed between the two first vertical plates, and one end of the hinge shaft is fixed to one of the first vertical plates by a locking pin to prevent the hinge shaft from rotating, and the other end of the hinge shaft is covered with a threaded sleeve, and the threaded sleeve is threadedly connected to the hinge shaft, and the threaded sleeve is installed on the other first vertical plate, and the threaded sleeve is rotatably connected to the first vertical plate, and the threaded sleeve can be rotated to adjust the length of the threaded connection section between the threaded sleeve and the hinge shaft;

A hinged hole plate is fixed at the bottom of the right end of the forearm support plate, and the hinged hole plate is mounted on the middle part of the hinge shaft. A compensation sleeve and a spring are mounted on the hinge shaft, and the compensation sleeve and the spring are respectively located on both sides of the hinged hole plate. The spring is located between the hinged hole plate and the threaded sleeve. The spring expansion and contraction can be controlled by twisting the threaded sleeve, and the pressing force of the spring on the hinged hole plate can be adjusted to adjust the rotational damping of the forearm support plate.

Furthermore, an upper arm support plate is provided on the right side of the forearm support plate, and the bottom end of the upper arm support plate is fixedly connected to the bottom plate; when performing elbow resistance exercise, the patient's upper arm can be rested on the upper arm support plate to improve the stability of upper limb training.

Compared with the prior art, the utility model has the following beneficial effects:

The training device can be used to assist patients in performing elbow flexion and extension training for upper limb fractures. The patient's forearm can be placed on a forearm support board, and the patient's forearm can be tied and fixed on the forearm support board using multiple straps. The telescopic mechanism is started, and the piston rod of the telescopic mechanism is extended, which can push the forearm support board to rotate upward, thereby driving the patient's forearm to rotate in a direction close to the upper arm, and then the piston rod of the telescopic mechanism is retracted, driving the forearm support board to rotate in a direction away from the upper arm, and this reciprocating process is repeated to perform elbow flexion and extension training. The training device can assist patients in performing automated elbow flexion and extension training for their upper limbs, freeing the hands of nursing staff and reducing the workload of nursing staff.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the main cross-sectional structure of Example 1.

Fig. 2 is a schematic diagram of the cross-sectional structure along the A-A direction in Fig. 1.

Fig. 3 is a schematic diagram of the cross-sectional structure in the B-B direction in Fig. 1.

FIG. 4 is an enlarged schematic diagram of the local structure at point C in FIG. 2 .

FIG. 5 is an enlarged schematic diagram of the local structure at point D in FIG. 3 .

FIG6 is a schematic diagram of the main cross-sectional structure of Example 2.

FIG7 is a schematic diagram of the cross-sectional structure in the E-E direction in FIG6 .

The names of the components in the figure are: 1, base plate 2, forearm support plate 3, first vertical plate 4, hinge assembly 4.1, hinge shaft 4.2, compensation sleeve 4.3, hinge hole plate 4.4, spring 4.5, threaded sleeve 4.6, annular gasket 4.7, locking nail 5, telescopic mechanism 6, restraint belt 7, first cushion layer 8, second vertical plate 9, Velcro 10, connecting ring 11, shock-absorbing sleeve 12, upper arm support plate 13, second cushion layer.

Detailed ways

Example 1

An upper limb fracture elbow flexion and extension training device, as shown in FIGS. 1 to 5 , comprises a base plate 1, a forearm support plate 2 is arranged above the base plate 1, the forearm support plate 2 is an arc-shaped plate, and its cross section is arc-shaped, the patient's forearm is placed on the inner side of the forearm support plate 2, and the forearm support plate 2 half wraps the forearm, which can improve the stability of the forearm;

Two first vertical plates 3 are arranged between the forearm support plate 2 and the bottom plate 1 and are spaced apart in parallel along the front-to-back direction. The bottom end of each first vertical plate 3 is fixedly connected to the bottom plate 1. A hinge assembly 4 is arranged between the top ends of the two first vertical plates 3. The bottom right end of the forearm support plate 2 is hinged to the two first vertical plates 3 through the hinge assembly 4.

A telescopic mechanism 5 is provided between the forearm support plate 2 and the bottom plate 1. The bottom end of the telescopic mechanism 5 is hinged to the bottom plate 1. The top end of the piston rod of the telescopic mechanism 5 is hinged to the bottom of the left end of the forearm support plate 2. The telescopic mechanism 5 is used to drive the forearm support plate 2 to rotate. The telescopic mechanism 5 can be an electric telescopic rod or a cylinder, both of which are existing equipment.

A plurality of binding straps 6 for binding and fixing a human forearm on the forearm supporting plate 2 are arranged at intervals along its length direction on the forearm supporting plate 2; a plurality of connecting rings 10 are arranged on the front side wall and the rear side wall of the forearm supporting plate 2, and the plurality of connecting rings 10 are distributed at intervals along the length direction of the forearm supporting plate 2, and each connecting ring 10 is hingedly mounted on the side wall of the forearm supporting plate 2; the plurality of connecting rings 10 on the front side wall of the forearm supporting plate 2 correspond one by one to the plurality of connecting rings 10 on the rear side wall thereof, and each corresponds one by one to the plurality of binding straps 6, one end of the binding strap 6 is fixed on the connecting ring 10 on the rear side wall of the forearm supporting plate 2, and the front end of the binding strap 6 passes around the connecting ring 10 on the front side wall of the forearm supporting plate 2 and is connected to the middle section thereof by a Velcro 9, so that the tightness of the binding strap 6 for binding the forearm can be easily adjusted.

Preferably, in this embodiment, as shown in Figures 4 to 5, the inner wall of the forearm support plate 2 is provided with a first cushion layer 7, which can improve comfort and avoid pressure injuries; specifically, the first cushion layer 7 is made of elastic soft material such as sponge, foam, cotton, etc.

Preferably, in this embodiment, as shown in Figures 1, 2 and 4, two second vertical plates 8 spaced parallel to each other in the front-to-back direction are provided between the left end of the forearm support plate 2 and the base plate 1, and the bottom end of each second vertical plate 8 is fixedly connected to the base plate 1, and the two second vertical plates 8 are used to support the left end of the forearm support plate 2. When the piston rod of the telescopic mechanism 5 contracts and the forearm support plate 2 gradually tends to be horizontal, the two second vertical plates 8 can limit and support the left end of the forearm support plate 2 to prevent the left end of the forearm support plate 2 from continuing to rotate downward.

Preferably, in this embodiment, as shown in Figures 2 and 4, a shock-absorbing sleeve 11 is installed at the top of each of the second vertical plates 8. When the left bottom end of the forearm support plate 2 contacts the top of the second vertical plate 8, the shock-absorbing sleeve 11 can perform buffering and shock absorption to reduce the shock impact on the forearm; specifically, the shock-absorbing sleeve 11 is made of sponge, foam or rubber.

The working principle and technical effects of this embodiment are as follows:

When a patient with an upper limb fracture performs elbow flexion and extension training, the nursing staff assists the patient in placing his forearm on the forearm support plate 2, and uses a plurality of restraints 6 to tie and fix the patient's forearm on the forearm support plate 2. In the initial state, the front end of the forearm support plate 2 is supported on the top of the second vertical plate 8, and the patient's forearm is in a horizontal position; after preparation, the telescopic mechanism 5 is started, the piston rod of the telescopic mechanism 5 is extended, and the forearm support plate 2 is pushed to rotate in the direction close to the upper arm, thereby driving the patient's forearm to rotate, and then the piston rod of the telescopic mechanism 5 is retracted, driving the forearm support plate 2 to rotate in the direction away from the upper arm, and this reciprocating process is used to perform elbow flexion and extension training; the training device can assist the patient's upper limbs in performing automated elbow flexion and extension training, freeing the nursing staff's hands and reducing the nursing staff's workload.

Example 2

An upper limb fracture elbow flexion and extension training device, which is different from the embodiment 1 in that: the top end of the piston rod of the telescopic mechanism 5 is detachably hinged to the bottom of the left end of the forearm support plate 2;

As shown in Fig. 3 and Fig. 5, a hinge shaft 4.1 is installed between the two first vertical plates 3, and one end of the hinge shaft 4.1 is fixed to one of the first vertical plates 3 by a locking pin 4.7 to prevent the hinge shaft 4.1 from rotating, and a threaded sleeve 4.5 is sleeved on the other end of the hinge shaft 4.1, and the threaded sleeve 4.5 is threadedly connected to the hinge shaft 4.1, and the threaded sleeve 4.5 is installed on the other first vertical plate 3, and the threaded sleeve 4.5 is rotatably connected to the first vertical plate 3, and the threaded sleeve 4.5 can be rotated to adjust the length of the threaded connection section between the threaded sleeve 4.5 and the hinge shaft 4.1;

A hinged hole plate 4.3 is fixed to the bottom of the right end of the forearm support plate 2, and the hinged hole plate 4.3 is sleeved on the middle part of the hinge shaft 4.1. A compensation sleeve 4.2 and a spring 4.4 are sleeved on the hinge shaft 4.1, and the compensation sleeve 4.2 and the spring 4.4 are respectively located on both sides of the hinged hole plate 4.3. The spring 4.4 is located between the hinged hole plate 4.3 and the threaded sleeve 4.5. The spring 4.4 can be controlled to expand and contract by twisting the threaded sleeve 4.5, and the pressing force of the spring 4.4 on the hinged hole plate 4.3 is adjusted to adjust the rotation damping of the forearm support plate 2;

The above-mentioned hinge shaft 4.1, compensation sleeve 4.2, hinge hole plate 4.3, spring 4.4, threaded sleeves 4.5, 4.7, and locking pins constitute a hinge assembly 4 that hinges the right end bottom of the forearm support plate 2 and the two first vertical plates 3; in addition, in Example 1, the hinge assembly 4 can only include the hinge shaft 4.1 and the hinge hole plate 4.3, and can also realize the hinge between the forearm support plate 2 and the two first vertical plates 3.

Preferably, in this embodiment, as shown in Figure 5, an annular gasket 4.6 is mounted on the hinge shaft 4.1 between the spring 4.4 and the threaded sleeve 4.5, and the threaded sleeve 4.5 pushes the spring 4.4 through the annular gasket 4.6 to improve the telescopic stability of the spring 4.4; a turntable is fixed to one end of the threaded sleeve 4.5 away from the spring 4.4, and the turntable is used to facilitate the rotation of the threaded sleeve 4.5.

Preferably, in this embodiment, as shown in Figures 6 and 7, an upper arm support plate 12 is provided on the right side of the forearm support plate 2, and the bottom end of the upper arm support plate 12 is fixedly connected to the base plate 1; when performing elbow resistance exercise, the patient's upper arm can be resting on the upper arm support plate 12 to improve the stability of upper limb training.

Preferably, in this embodiment, as shown in Figures 6 and 7, the upper arm support plate 12 is an arc-shaped plate with an arc-shaped cross-section. The patient's upper arm is placed on the inner side of the upper arm support plate 12, and the upper arm support plate 12 half wraps the upper arm, which can improve the stability of the upper arm; in addition, the inner wall of the upper arm support plate 12 is provided with a second cushion layer 13, which can improve comfort and avoid pressure injuries; specifically, the second cushion layer 13 is made of elastic soft materials such as sponge, foam, and cotton.

The working principle and technical effects of this embodiment are as follows:

The training device can be used to assist the patient in performing elbow resistance training on the upper limbs. The top end of the piston rod of the telescopic mechanism 5 is separated from the bottom left end of the forearm support plate 2. The telescopic mechanism 5 is no longer used to drive the forearm support plate 2 to rotate. Instead, the patient actively performs elbow resistance training. The spring 4.4 can be controlled to retract by twisting the threaded sleeve 4.5. When the spring 4.4 is further compressed, the pressing force of the spring 4.4 on the hinged hole plate 4.3 is increased to increase the rotational damping of the forearm support plate 2. When the spring 4.4 is controlled to extend, the pressing force of the spring 4.4 on the hinged hole plate 4.3 is reduced to reduce the rotational damping of the forearm support plate 2. This helps patients to independently perform elbow resistance training and can adjust the damping.

Claims (8)

1. The utility model provides an upper limb fracture elbow joint flexes and stretches trainer, includes bottom plate (1), its characterized in that: the front arm support plate (2) is arranged above the bottom plate (1), two first vertical plates (3) which are parallel to each other along the front-back direction are arranged between the front arm support plate (2) and the bottom plate (1), the bottom end of each first vertical plate (3) is fixedly connected with the bottom plate (1), a hinge assembly (4) is arranged between the top ends of the two first vertical plates (3), and the bottom of the right end of the front arm support plate (2) is hinged with the two first vertical plates (3) through the hinge assembly (4);

A telescopic mechanism (5) is arranged between the forearm support plate (2) and the bottom plate (1), the bottom end of the telescopic mechanism (5) is hinged with the bottom plate (1), the top end of a piston rod of the telescopic mechanism (5) is hinged with the bottom of the left end of the forearm support plate (2), and the telescopic mechanism (5) is used for driving the forearm support plate (2) to rotate;

a plurality of binding belts (6) used for binding and fixing the human forearms on the forearm supporting plate (2) are arranged on the forearm supporting plate (2) along the length direction at intervals.

2. The upper limb fracture elbow joint flexion and extension training device according to claim 1, wherein: the forearm supporting plate (2) is an arc-shaped plate.

3. The upper limb fracture elbow joint flexion and extension training device according to claim 2, wherein: the inner side wall of the forearm supporting plate (2) is provided with a first cushion layer (7).

4. The upper limb fracture elbow joint flexion and extension training device according to claim 2, wherein: the front side wall and the rear side wall of the forearm support plate (2) are respectively provided with a plurality of connecting rings (10), the connecting rings (10) are distributed at intervals along the length direction of the forearm support plate (2), and each connecting ring (10) is hinged to the side wall of the forearm support plate (2); the connecting rings (10) of the front side wall of the forearm supporting plate (2) are in one-to-one correspondence with the connecting rings (10) of the rear side wall of the forearm supporting plate, and are in one-to-one correspondence with the binding bands (6), one ends of the binding bands (6) are fixed on the connecting rings (10) of the rear side wall of the forearm supporting plate (2), and the front ends of the binding bands (6) are connected with the middle section of the forearm supporting plate through the magic tape (9) after bypassing the connecting rings (10) of the front side wall of the forearm supporting plate (2).

5. The upper limb fracture elbow joint flexion and extension training device according to claim 1, wherein: two second risers (8) which are parallel and spaced along the front-back direction are arranged between the left end of the forearm supporting plate (2) and the bottom plate (1), the bottom end of each second riser (8) is fixedly connected with the bottom plate (1), and the two second risers (8) are used for supporting the left end of the forearm supporting plate (2).

6. The upper limb fracture elbow joint flexion and extension training device according to claim 5, wherein: and a damping sleeve (11) is arranged at the top end of each second vertical plate (8).

7. The upper limb fracture elbow joint flexion and extension training device according to claim 1, wherein: the top end of a piston rod of the telescopic mechanism (5) is detachably hinged with the bottom of the left end of the forearm supporting plate (2);

The hinge assembly (4) comprises a hinge shaft (4.1), the hinge shaft (4.1) is arranged between the two first vertical plates (3) in a penetrating mode, one end of the hinge shaft (4.1) is fixed with one of the first vertical plates (3) through a locking nail (4.7), a threaded sleeve (4.5) is sleeved outside the other end of the hinge shaft (4.1), the threaded sleeve (4.5) is in threaded connection with the hinge shaft (4.1), the threaded sleeve (4.5) is arranged on the other first vertical plate (3) in a penetrating mode, and the threaded sleeve (4.5) is in rotary connection with the first vertical plate (3);

The right-hand member bottom of forearm backup pad (2) is fixed with articulated orifice plate (4.3), and articulated orifice plate (4.3) suit is equipped with compensation sleeve (4.2) and spring (4.4) at the middle part of articulated shaft (4.1), and compensation sleeve (4.2) and spring (4.4) are located the both sides of articulated orifice plate (4.3) respectively, and spring (4.4) are located between articulated orifice plate (4.3) and screw sleeve (4.5).

8. The upper limb fracture elbow joint flexion and extension training device according to claim 1, wherein: the right side of forearm backup pad (2) is provided with upper arm backup pad (12), and the bottom plate (1) fixed connection of upper arm backup pad (12).