Wheelchair auxiliary device for lower limb fracture patient

Abstract

The utility model relates to a wheelchair auxiliary device for a lower limb fracture patient. Comprising a fixed base detachably connected with a wheelchair profile, a front-back swing base is hinged to the front end of the fixed base and locked through a first fastener, and a left-right swing base is hinged to the upper end of the front-back swing base and locked through a second fastener. The first telescopic arm and the second telescopic arm are connected in a hinged mode, the lower end of the first telescopic arm is fixedly connected with the left-right swinging base, a lower connecting base is installed on the first telescopic arm, an upper connecting base is installed on the second telescopic arm, and a folding supporting arm is arranged between the lower connecting base and the upper connecting base; a detachable leg support is installed at the front end of the second telescopic arm, a non-elastic bandage is arranged in the middle of the second telescopic arm, and an elastic bandage is arranged on the leg support. According to the wheelchair auxiliary device for the lower limb fracture patient, the operation convenience of lifting the affected limb is improved, and the stability of the lifted affected limb is improved.

Description

Technical Field

[0001] This utility model belongs to the field of nursing facilities technology, and in particular relates to a wheelchair assistive device for patients with lower limb fractures. Background Technology

[0002] In the early stages of lower limb fractures, when the affected limb is temporarily unable to bear weight, or when the affected limb is immobilized in an extended position after knee surgery, wheelchair use is often necessary. During nursing care, patients with lower limb fractures should elevate the affected limb to prevent further bruising and swelling caused by limb drooping. Current wheelchairs typically only provide seating, requiring the patient's legs to be positioned in a sitting position, which clearly contradicts the aforementioned requirement of elevating the affected limb. Current solutions generally involve strapping a support frame to the wheelchair and using straps to suspend and elevate the affected limb.

[0003] The aforementioned treatment methods are difficult to operate and have poor stability, which can easily cause secondary damage to the affected limb. Therefore, it is necessary to develop and design an assistive device for wheelchairs that can be unfolded when in use and folded or disassembled when not in use, in order to solve the problems of difficult operation and poor stability. Utility Model Content

[0004] The purpose of this invention is to provide a wheelchair assistive device for patients with lower limb fractures, which improves the ease of operation for raising the affected limb and enhances the stability of the affected limb after it is raised.

[0005] The technical solution adopted by this utility model is as follows: a wheelchair assistive device for patients with lower limb fractures, including a fixed base detachably connected to a wheelchair profile, a front-to-back swing base hinged to the front end of the fixed base and locked with a first fastener, a left-to-right swing base hinged to the upper end of the front-to-back swing base and locked with a second fastener, and a first telescopic arm and a second telescopic arm hinged together. The lower end of the first telescopic arm is fixedly connected to the left-to-right swing base, a lower connecting seat is installed on the first telescopic arm, an upper connecting seat is installed on the second telescopic arm, a folding support arm is provided between the lower connecting seat and the upper connecting seat, a detachable leg rest is installed at the front end of the second telescopic arm, a non-elastic strap is provided in the middle of the second telescopic arm, and an elastic strap is provided on the leg rest.

[0006] Preferably, the first telescopic arm includes a first telescopic rod and a first sleeve, the upper end of the first telescopic rod is inserted into the first sleeve and a first telescopic locking mechanism is provided between the two; the second telescopic arm includes a second telescopic rod and a second sleeve, the rear end of the second telescopic rod is inserted into the second sleeve and a second telescopic locking mechanism is provided between the two.

[0007] Preferably, the first telescopic locking mechanism includes a plurality of pin holes provided on the side wall of the first sleeve and an elastic locking pin installed on the first telescopic rod, the elastic locking pin being located in one of the pin holes; the second telescopic locking mechanism includes a plurality of pin holes provided on the side wall of the second sleeve and an elastic locking pin installed on the second telescopic rod, the elastic locking pin being located in one of the pin holes.

[0008] Preferably, a first adapter is provided at the upper end of the first sleeve, and a second adapter is provided at the rear end of the second sleeve, with the first adapter and the second adapter being hinged together.

[0009] Preferably, the folding arm includes a lower link and an upper link. The front end of the lower link is hinged to the lower end of the upper link, the rear end of the lower link is hinged to the lower connecting seat and locked with a third fastener, and the upper end of the upper link is hinged to the upper connecting seat.

[0010] Preferably, the top and bottom of the front-to-back swing base are provided with grooves, the front end of the fixed base is located in the bottom groove, and the lower end of the left-to-right swing base is located in the top groove.

[0011] Preferably, an obliquely positioned limit stop is provided at the front end of the fixed base to limit the endpoint position of the forward swing of the swinging base.

[0012] Preferably, the fixing base includes a base body located at the front, a base plate with a connection hole at the rear of the base body, and a pressure plate with a connection hole in the middle that is arc-shaped. The base plate and the pressure plate of the fixing base are fixedly connected by bolts and clamp the wheelchair profile.

[0013] Preferably, two mounting plates with connecting holes are provided at the bottom center of the leg support, and a transversely through connecting hole is provided at the front end of the second telescopic rod. The mounting plates are located on both sides of the second telescopic rod and are fixedly connected by bolts.

[0014] Preferably, there are strap rings on both sides of the middle part of the second sleeve, and the two ends of the non-elastic straps are inserted into the strap rings and fastened to fix the affected limb; there are multiple sets of locking holes on the top edge of the leg support and multiple elastic straps, and a locking pin is provided at the end of the elastic strap and the locking pin is inserted into the locking hole.

[0015] The advantages and positive effects of this utility model are:

[0016] This invention provides a wheelchair assistive device for patients with lower limb fractures. It is attached to a wheelchair to provide auxiliary support and elevation for the affected limb. The device features a foldable design and is detachably connected to the wheelchair frame, allowing it to be installed during use and removed when not in use. When in use, it can be unfolded or folded as needed. When unfolded, the affected limb is placed in the leg rest. Therefore, this assistive device reduces the difficulty of elevating the patient, improves the ease of elevating the affected limb, and reduces the burden on the user.

[0017] On the other hand, this wheelchair assistive device can be adjusted in posture when deployed to provide the most suitable elevation and support for the affected limb, improving comfort and meeting the care requirements of the affected limb. Once deployed, the device is structurally stable, providing stable elevation and support for the affected limb, preventing swaying of the affected limb when moving the wheelchair and avoiding secondary injury. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0020] In the picture:

[0021] 1. Pressure plate; 2. Wheelchair profile; 3. Fixed base; 4. First fastener; 5. Forward and backward swing base; 6. Second fastener; 7. Left and right swing base; 8. First telescopic rod; 9. Lower connecting seat; 10. First sleeve; 11. Third fastener; 12. Lower connecting rod; 13. First adapter seat; 14. Second adapter seat; 15. Second sleeve; 16. Non-elastic strap; 17. Upper connecting seat; 18. Upper connecting rod; 19. Second telescopic rod; 20. Leg rest; 21. Elastic strap; 22. Limit stop; 23. Strap ring. Detailed Implementation

[0022] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0023] Please see Figure 1 and Figure 2 The present invention provides a wheelchair assist device for patients with lower limb fractures, comprising a fixed base 3 detachably connected to a wheelchair profile 2, a front-to-back swing base 5 hinged to the front end of the fixed base 3 and locked with a first fastener 4, and a left-to-right swing base 7 hinged to the upper end of the front-to-back swing base 5 and locked with a second fastener 6.

[0024] When this auxiliary device needs to be installed on a wheelchair, the fixing base 3 is fixedly connected to the wheelchair profile 2. When not in use, it can be completely removed from the wheelchair. In this embodiment, the fixing base 3 includes a base body located at the front, a base plate with a connection hole at the rear of the base body, and a pressure plate 1 with a connection hole in the middle that is arc-shaped. The base plate of the fixing base 3 and the pressure plate 1 are fixedly connected by bolts and clamp the wheelchair profile 2. Therefore, this auxiliary device can be easily installed and fixed on the wheelchair profile 2.

[0025] It also includes a first telescopic arm and a second telescopic arm that are hinged together. The lower end of the first telescopic arm is fixedly connected to the left and right swing base 7. A lower connecting seat 9 is installed on the first telescopic arm, and an upper connecting seat 17 is installed on the second telescopic arm. A folding support arm is provided between the lower connecting seat 9 and the upper connecting seat 17. The folding support arm is used to support the first and second telescopic arms when they are in the extended state. When the first and second telescopic arms are folded, the folding support arm is also in the folded state and located between the two telescopic arms. A detachable leg support 20 is installed at the front end of the second telescopic arm. A non-elastic bandage 16 is provided in the middle of the second telescopic arm, and an elastic bandage 21 is provided on the leg support 20. The affected limb (specifically, the lower leg part of the affected limb) is placed in the leg support 20, and the non-elastic bandage 16 and the elastic bandage 21 are used to assist in fixing the affected limb.

[0026] Its operating principle is as follows: When installed on a wheelchair and not in use, the first and second telescopic arms are fully retracted and folded, and then swung to the left or right to achieve a reclining posture, thus placing the assistive device in a folded state on the wheelchair. In use, the assistive device is returned to its upright position, and then the first and second telescopic arms are unfolded to achieve a similar posture. Figure 1 The posture shown is then further adjusted, including front-to-back adjustment, left-to-right adjustment, and adjustment of the angle between the first and second telescopic arms. Finally, the posture of the device is set to provide the most suitable elevation support for the affected limb, improve comfort, and meet the care requirements of the affected limb.

[0027] like Figure 1 and Figure 2As shown, the top and bottom of the front-to-back swing base 5 are provided with grooves. The front end of the fixed base 3 is located in the bottom groove and is locked with the first fastener 4. The lower end of the left-to-right swing base 7 is located in the top groove and is locked with the second fastener 6. The first fastener 4 and the second fastener 6 are essentially bolts with rotating ends. When the first fastener 4 is tightened, the bottom groove of the front-to-back swing base 5 undergoes a certain deformation, which locks and fixes the internal fixed base 3. When the first fastener 4 is loosened, the locking and fixing effect on the fixed base 3 disappears. Similarly, when the second fastener 6 is tightened, the top groove of the front-to-back swing base 5 undergoes a certain deformation, which locks and fixes the internal left-to-right swing base 7. When the second fastener 6 is loosened, the locking and fixing effect on the left-to-right swing base 7 disappears.

[0028] In this embodiment, a slanted limiting stop 22 is provided at the front end of the fixed base 3 to limit the endpoint position of the forward swing of the front-back swing base 5. The function of setting the limiting stop 22 is that when the first fastener 4 fails, the front-back swing base 5, the left-right swing base 7, and the first and second telescopic arms will swing forward. At this time, under the action of the limiting stop 22, the front-back swing base 5 can only swing forward to the position that abuts against the limiting stop 22, and will not continue to swing forward. This can avoid the problem of the affected limb suddenly losing support due to the failure of the fastener.

[0029] In this embodiment, the first telescopic arm includes a first telescopic rod 8 and a first sleeve 10. The upper end of the first telescopic rod 8 is inserted into the first sleeve 10, and a first telescopic locking mechanism is provided between the two. The lower end of the first telescopic rod 8 is fixedly connected to the left and right swing base 7. The second telescopic arm includes a second telescopic rod 19 and a second sleeve 15. The rear end of the second telescopic rod 19 is inserted into the second sleeve 15, and a second telescopic locking mechanism is provided between the two. The leg support 20 is installed and fixed to the front end of the second telescopic rod 19. In this way, the first telescopic arm and the second telescopic arm can be telescopically adjusted separately during use.

[0030] The first telescopic locking mechanism includes multiple pin holes on the side wall of the first sleeve 10 and an elastic locking pin installed on the first telescopic rod 8, with the elastic locking pin located in one of the pin holes. Similarly, the second telescopic locking mechanism includes multiple pin holes on the side wall of the second sleeve 15 and an elastic locking pin installed on the second telescopic rod 19, with the elastic locking pin located in one of the pin holes. Specifically, a hole for accommodating the elastic locking pin can be provided on the telescopic rod. The elastic locking pin consists of a locking pin and a spring. Under the action of the spring, the locking pin moves outward to insert into the pin hole. When it is necessary to release the lock to adjust the length of the telescopic arm, the elastic locking pin is pressed inward to disengage it from the pin hole. After telescopic adjustment, the elastic locking pin engages with a pin hole at another location.

[0031] In this embodiment, a first adapter 13 is provided at the upper end of the first sleeve 10, and a second adapter 14 is provided at the rear end of the second sleeve 15. The first adapter 13 and the second adapter 14 are hinged together.

[0032] In this embodiment, the folding arm includes a lower connecting rod 12 and an upper connecting rod 18. The front end of the lower connecting rod 12 is hinged to the lower end of the upper connecting rod 18, and the rear end of the lower connecting rod 12 is hinged to the lower connecting seat 9 and locked using a third fastener 11. The upper end of the upper connecting rod 18 is hinged to the upper connecting seat 17. The third fastener 11 is essentially a bolt with a rotating end. Figure 2 As shown, the lower connecting seat 9 includes a connecting seat body and two opposing clamping plates hinged to the connecting seat body. Teeth are provided on the inner side of the clamping plates and teeth are provided at the rear end of the lower connecting rod 12. When the third fastener 11 brings the two clamping plates together in the middle, the engagement between the teeth can lock the lower connecting rod 12 in the current position, thereby determining the state of the folding arm. When the third fastener 11 is operated to release the two clamping plates, the clamping and fixing effect on the rear end of the lower connecting rod 12 disappears. At this time, the lower connecting rod 12 can be swung up or down, thereby adjusting and setting the state of the folding arm.

[0033] The leg support 20 is detachable and installed at the front end of the second telescopic rod 19, allowing for selection and replacement according to different leg sizes. In this embodiment, two mounting plates with connecting holes are located at the center of the bottom of the leg support 20, and a transversely penetrating connecting hole is located at the front end of the second telescopic rod 19. The two mounting plates are located on both sides of the front end of the second telescopic rod 19 and are fixedly connected by bolts, facilitating easy assembly and disassembly. Furthermore, to improve overall comfort, padding can be provided within the groove of the leg support 20.

[0034] In this embodiment, strap loops 23 are provided on both sides of the middle portion of the second sleeve 15. The two ends of the non-elastic straps 16 are threaded through the strap loops 23 and fastened to secure the affected limb. Multiple sets of locking holes are provided on the top edge of the leg support 20, and multiple elastic straps 21 are provided. Locking pins are provided at the ends of the elastic straps 21 and are inserted into the locking holes. The multiple elastic straps 21 secure the affected limb. The non-elastic straps 16 and elastic straps 21 can improve the stability of the affected limb and prevent the affected limb from falling off the auxiliary device.

[0035] How to use:

[0036] This auxiliary device is installed and fixed onto the wheelchair profile 2. After installation, when not in use, the device is in a folded and retracted state. Figure 1Taking the state shown in the figure as an example, the first telescopic arm and the second telescopic arm should be fully retracted, the first telescopic arm and the second telescopic arm should be folded in half and the folding arm should be fully folded, so that the first telescopic arm and the second telescopic arm are in the folded state. After that, the main body of the device swings to the left or right to the lying state (for example, when the device is installed on the left side of the wheelchair to be used on the left affected limb, the device should swing to the right after it is retracted and folded).

[0037] When using this auxiliary device, first restore the device to a similar state. Figure 1 The device is placed in its unfolded state. Further adjustments are made to its posture, including adjusting it forward or backward and securing it with the first fastener 4, adjusting it left or right and securing it with the second fastener 6, adjusting the extension and retraction of the first and second telescopic arms, adjusting the angle between the first and second telescopic arms and securing it with the third fastener 11. Ultimately, the device's posture should be adapted as closely as possible to the requirements of raising and supporting the affected limb. The affected limb is placed on the device, with the front of the lower leg inserted into the leg support 20. Then, the affected limb is appropriately bound and fixed using non-elastic straps 16 and elastic straps 21.

Claims

1. A wheelchair assistive device for a patient with a lower extremity fracture, characterized by: The wheelchair profile (2) is detachably connected with the fixed base (3), the front and rear swing base (5) is hingedly installed at the front end of the fixed base (3) and locked by the first fastener (4), the left and right swing base (7) is hingedly installed at the upper end of the front and rear swing base (5) and locked by the second fastener (6), the first and second telescopic arms are hingedly connected, the lower end of the first telescopic arm is fixedly connected with the left and right swing base (7), the lower connecting seat (9) is installed on the first telescopic arm, the upper connecting seat (17) is installed on the second telescopic arm, the folding support arm is arranged between the lower connecting seat (9) and the upper connecting seat (17), the detachable leg support (20) is installed at the front end of the second telescopic arm, the non-elastic band (16) is arranged at the middle part of the second telescopic arm, and the elastic band (21) is arranged on the leg support (20).

2. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 1 wherein: The first telescopic arm comprises a first telescopic rod (8) and a first sleeve (10), the upper end of the first telescopic rod (8) is inserted into the first sleeve (10), and a first telescopic locking mechanism is arranged between the first telescopic rod (8) and the first sleeve (10); the second telescopic arm comprises a second telescopic rod (19) and a second sleeve (15), the rear end of the second telescopic rod (19) is inserted into the second sleeve (15), and a second telescopic locking mechanism is arranged between the second telescopic rod (19) and the second sleeve (15).

3. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 2 wherein: The first telescopic locking mechanism comprises a plurality of pin holes arranged on the side wall of the first sleeve (10) and an elastic locking pin installed on the first telescopic rod (8), and the elastic locking pin is located in one of the pin holes; The second telescopic locking mechanism comprises a plurality of pin holes arranged on the side wall of the second sleeve (15) and an elastic locking pin installed on the second telescopic rod (19), and the elastic locking pin is located in one of the pin holes.

4. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 3 wherein: A first adapter seat (13) is arranged at the upper end of the first sleeve (10), and a second adapter seat (14) is arranged at the rear end of the second sleeve (15); the first adapter seat (13) and the second adapter seat (14) are hingedly connected.

5. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 4 wherein: The folding support arm comprises a lower connecting rod (12) and an upper connecting rod (18), the front end of the lower connecting rod (12) is hingedly connected with the lower end of the upper connecting rod (18), the rear end of the lower connecting rod (12) is hingedly connected with the lower connecting seat (9) and locked by the third fastener (11), and the upper end of the upper connecting rod (18) is hingedly connected with the upper connecting seat (17).

6. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 5 wherein: The top and bottom of the front and rear swing base (5) are provided with grooves, the front end of the fixed base (3) is located in the groove at the bottom, and the lower end of the left and right swing base (7) is located in the groove at the top.

7. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 6 wherein: A slantingly arranged limiting stop (22) is further arranged at the front end of the fixed base (3) to limit the forward swing end position of the front and rear swing base (5).

8. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 7 wherein: The fixed base (3) comprises a base body at the front part, a base plate with connecting holes is arranged at the rear part of the base body, and a pressing plate (1) with connecting holes and in an arc shape is further arranged at the middle part; the base plate of the fixed base (3) and the pressing plate (1) are fixedly connected by bolts and clamp the wheelchair profile (2).

9. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 8 wherein said seat is provided with a backrest and a seat pan. The middle part of the bottom of the leg support (20) is provided with two opposite installation plates with connecting holes, and the front end of the second telescopic rod (19) is provided with a transversely penetrating connecting hole, and the installation plates are located on both sides of the second telescopic rod (19) and are fixedly connected by bolts.

10. The wheelchair assistive device for lower extremity fracture patients as claimed in claim 9 wherein: Two sides of the middle part of the second sleeve (15) are provided with bandage rings (23), two ends of the non-elastic bandage (16) are threaded in the bandage rings (23) and are buckled to be fixedly bound; the top edge of the leg support (20) is provided with multiple sets of lock holes, and the elastic bandage (21) is provided with multiple strips, the end of the elastic bandage (21) is provided with a lock pin, and the lock pin is inserted and connected into the lock hole.

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