Postoperative limb bending prevention limiting device for patient
By combining the seat cushion component and the support component, the problems of inconvenient installation and unstable limb placement in existing devices and wheelchairs are solved, achieving safe and comfortable support for the patient's limbs after surgery and preventing falls, thus improving the effectiveness of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING JISHUITAN HOSPITAL
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-14
AI Technical Summary
Existing postoperative limb immobilization devices for orthopedic patients are not easy to install and adapt to wheelchairs, and lack a structure to stably place the limbs that require upright immobilization, resulting in inconvenience and insufficient safety.
A postoperative limb anti-bending and limiting device for patients, comprising a seat cushion assembly and a support assembly, was designed. The device is initially installed by engaging the support shell with the groove of the wheelchair, in conjunction with an air pump and restraint straps. The support plate and hydraulic struts are adjusted to provide support and fixation according to the position of the patient's limb, ensuring stable placement and safety of the limb.
It enables convenient installation and adaptation of the device to wheelchairs, improving the comfort and safety of patients going out for testing, preventing falls, and effectively supporting upright and immobilized limbs, thus improving the practicality and safety of use.
Smart Images

Figure CN224112923U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, specifically a limb anti-bending and limiting device for patients after surgery. Background Technology
[0002] Medical devices assist patients in rehabilitation during use. In orthopedic surgeries, where patients are unable to exert force on their legs, external devices are needed to immobilize the limbs, assisting with movement or limiting position. A search of application CN202123374734.0 discloses a postoperative limb immobilization device for orthopedic patients, which includes a first support frame and a second support frame. Guide rails are fixedly connected to both sides of the top surface of the second support frame. Two first support rods are rotatably connected to one end of the first support frame near the second support frame, and one end of each of the two first support rods is rotatably connected to a second support rod. The patient's leg is then placed on the first and second support rods and secured with Velcro. The device limits the patient's leg position, with two support rods supporting the knee area. The user can then rotate a handwheel, which in turn rotates a lead screw, driving a sliding block and a linkage shaft. This facilitates the relative rotation of the two first and two second support rods, enabling the patient's leg to extend and flex, while conserving the patient's energy. However, this design has several drawbacks in practical use: it is difficult to install and adapt the structure to a wheelchair, and it lacks a structure for stably positioning a single limb requiring upright braking. Therefore, a more practical limiting device to prevent limb bending needs to be designed. Utility Model Content
[0003] The purpose of this invention is to provide a limb anti-bending and limiting device for postoperative patients, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a limb anti-bending and limiting device for postoperative patients, comprising: a seat cushion assembly, the seat cushion assembly comprising a seat cushion body, a rubber protective net being provided at the bottom of the seat cushion body, a supporting shell being provided at the bottom of the rubber protective net, an air pump being provided on the inner wall of the supporting shell, the air pump being fixedly connected to an air inlet valve pipe at one end of the seat cushion body through an air inlet pipe, and an exhaust valve being provided on the side of one end of the seat cushion body;
[0005] The support assembly includes a bonding plate installed on one end of a rubber protective net and a support housing. A mounting seat is provided on the upper side of the other side of the bonding plate. A fixed shaft is provided on the inner wall of the mounting seat. The surface of the fixed shaft is fixedly connected to a rotating block through a movable sleeve. A support plate is fixedly connected to one side of the rotating block. One side of the bottom of the support plate is rotatably connected to one end of a hydraulic strut through a first hinge seat. A second hinge seat is provided at the other end of the hydraulic strut. A snap-fit connector is provided at the bottom of the second hinge seat. The surface of the snap-fit connector engages with several snap-fit holes symmetrically opened on the top of the strip block. The strip block is located below the surface of the bonding plate.
[0006] As a preferred embodiment of this utility model: both sides of the seat cushion are provided with restraint straps, and the other ends of the two restraint straps are respectively provided with buckles and sleeves that engage with each other.
[0007] As a preferred embodiment of this utility model: the top of the support plate is provided with an arc-shaped groove, and a protective pad is bonded to the inner wall of the arc-shaped groove.
[0008] As a preferred embodiment of this utility model: mounting blocks are provided in the middle of both sides of the support plate, and an elastic strap is provided on the top of the mounting block. The Velcro on the other end of the elastic strap is bonded and fixed to the Velcro on the surface of the other mounting block.
[0009] As a preferred embodiment of this utility model: connecting holes are provided on the surfaces of both ends of the strip block, and the inner walls of the two connecting holes are threadedly connected to the slots provided on the surface of the bonding plate by connecting pins.
[0010] As a preferred embodiment of this utility model, the length of the support plate is longer than the length of the patient's thigh, and it is made of a lightweight and high-strength material.
[0011] As a preferred embodiment of this utility model: a through groove is provided on the surface of the bonding plate in the area above the strip block, and the inner wall of the through groove can be inserted and connected to the surface of the hydraulic strut.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] (1) By engaging the support shell with the groove on the wheelchair, the initial installation of the rubber protective net above the support shell and the seat cushion is completed. The air pump, together with the air inflator and the air inlet valve, inflates the seat cushion, which expands to fit different models of wheelchairs. When there is too much gas inside the seat cushion, the air is discharged with the exhaust valve. The seat cushion, together with the buckles and clips on the two restraint straps, can restrain and limit the patient, thereby preventing the patient from falling off the wheelchair.
[0014] (2) By moving the rotating block on the fixed shaft surface, the rotating block moves the support plate, thereby adjusting according to the position of the injured limb of the patient. The rotating block drives the support plate to rotate on the fixed shaft surface until the support plate and the pad are in stable contact with the patient's limb. The support plate and the first hinge seat drive the hydraulic strut to move, and the hydraulic strut drives the second hinge seat to move until the snap-fit connector at the bottom of the second hinge seat is engaged with the inner wall of the snap-fit hole corresponding to the top of the strip block, thereby completing the support and fixation of the support plate, thereby helping the patient to place the limb that needs to be upright and braked stably, improving the patient's comfort and safety when going out for testing. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the seat cushion assembly structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the support component structure of this utility model.
[0018] In the diagram: 1. Seat cushion assembly; 11. Seat cushion body; 12. Rubber protective net; 13. Support shell; 14. Air pump; 15. Inflation tube; 16. Inlet valve tube; 17. Exhaust valve; 18. Restraint strap; 19. Buckle; 110. Sleeve; 2. Support assembly; 21. Adhesive plate; 22. Mounting base; 23. Fixed shaft; 24. Moving sleeve; 25. Rotating block; 26. Support plate; 27. First hinge seat; 28. Hydraulic strut; 29. Second hinge seat; 210. Snap connector; 211. Strip block; 212. Snap hole; 213. Arc groove; 214. Protective pad; 215. Elastic strap; 216. Connecting hole; 217. Connecting pin; 218. Hole groove; 219. Through groove. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] Please see Figures 1-3A limb anti-bending and limiting device for postoperative patients includes: a seat cushion assembly 1, the seat cushion assembly 1 includes a seat cushion body 11, a rubber protective net 12 is provided at the bottom of the seat cushion body 11, a support shell 13 is provided at the bottom of the rubber protective net 12, an air pump 14 is provided on the inner wall of the support shell 13, the air pump 14 is fixedly connected to an air inlet valve pipe 16 at one end of the seat cushion body 11 through an air inlet pipe 15, and an exhaust valve 17 is provided on the side of one end of the seat cushion body 11.
[0021] In practical use: The support shell 13 is engaged with the groove on the wheelchair, and at the same time, the support shell 13 drives the fitting plate 21 to fit with the wheelchair frame, completing the initial installation of the rubber protective net 12 and the seat cushion 11 on the support shell 13. The air pump 14, together with the air pipe 15 and the air inlet valve pipe 16, inflates the seat cushion 11, causing the seat cushion 11 to expand to fit different models of wheelchairs. When there is too much air inside the seat cushion 11, the air inside is discharged with the help of the exhaust valve 17. The seat cushion 11, together with the buckles 19 and the sleeves 110 on the two restraint straps 18, can restrain and limit the patient to prevent the patient from falling off the wheelchair.
[0022] Please see Figure 3 Support component 2 includes a bonding plate 21 installed at one end of the rubber protective net 12 and the support housing 13. A mounting seat 22 is provided on the upper side of the other side of the bonding plate 21. A fixed shaft 23 is provided on the inner wall of the mounting seat 22. The surface of the fixed shaft 23 is fixedly connected to the rotating block 25 through a movable sleeve 24. A support plate 26 is fixedly connected to one side of the rotating block 25. One side of the bottom of the support plate 26 is rotatably connected to one end of the hydraulic strut 28 through a first hinge seat 27. A second hinge seat 29 is provided at the other end of the hydraulic strut 28. A snap-fit connector 210 is provided at the bottom of the second hinge seat 29. The surface of the snap-fit connector 210 engages with several snap-fit holes 212 symmetrically opened on the top of the strip block 211. The strip block 211 is located below the surface of the bonding plate 21.
[0023] In practical use: The movable sleeve 24 drives the rotating block 25 to move on the surface of the fixed shaft 23. The rotating block 25 drives the support plate 26 to move, thereby adjusting according to the position of the injured limb of the patient. The rotating block 25 drives the support plate 26 to rotate on the surface of the fixed shaft 23 until the support plate 26 and the pad 214 are in stable contact with the patient's limb. The support plate 26 and the first hinge seat 27 drive the hydraulic strut 28 to move. The hydraulic strut 28 drives the second hinge seat 29 to move until the snap joint 210 at the bottom of the second hinge seat 29 is engaged with the inner wall of the snap hole 212 at the top of the strip block 211, thereby completing the support and fixation of the support plate 26. This helps the patient to place the limb that needs to be upright and immobilized stably, improving the patient's comfort and safety when going out for testing.
[0024] Please see Figure 2Both sides of the seat cushion 11 are provided with restraint straps 18, and the other ends of the two restraint straps 18 are respectively provided with buckles 19 and clips 110 that engage with each other.
[0025] In practical use: the two restraint straps 18 are used in conjunction with the guardrails on both sides of the wheelchair to limit the patient's sitting posture. The buckles 19 and the sleeves 110 at opposite ends of the two restraint straps 18 are engaged to prevent the patient from falling off the wheelchair.
[0026] Please see Figure 3 The top of the support plate 26 is provided with an arc-shaped groove 213, and a protective pad 214 is bonded to the inner wall of the arc-shaped groove 213.
[0027] In practical use: the pads 214 on the inner wall of the arc-shaped groove 213 at the top of the support plate 26 facilitate the protection of the patient's injured limbs.
[0028] Please see Figure 3 Mounting blocks are provided in the middle of both sides of the support plate 26. An elastic strap 215 is provided on the top of the mounting block. The Velcro on the other end of the elastic strap 215 is attached to the Velcro on the surface of another mounting block.
[0029] In practical use: After the elastic strap 215 is stretched elastically, the Velcro at the other end is attached to the Velcro on the mounting block, thereby facilitating the restriction of the upright limbs on the support plate 26.
[0030] Please see Figure 3 The surfaces at both ends of the strip block 211 are provided with connecting holes 216, and the inner walls of the two connecting holes 216 are threadedly connected to the slots 218 on the surface of the bonding plate 21 by connecting pins 217.
[0031] In practical use: insert the two connecting pins 217 into the two connecting holes 216 and the slot 218 to install and remove the strip block 211 from the bonding plate 21.
[0032] Please see Figure 1 The support plate 26 is longer than the patient's thigh length and is made of lightweight, high-strength material.
[0033] In practical use: The support plate 26, made of lightweight and high-strength materials, can reduce the pressure during support. The length of the support plate 26 is longer than the length of the patient's thigh, which makes it easier to ensure that the upright immobilized limb does not bend.
[0034] Please see Figure 3 A through groove 219 is provided on the surface of the bonding plate 21 above the strip block 211. The inner wall of the through groove 219 can be inserted and connected to the surface of the hydraulic strut 28.
[0035] In practical use: When the support plate 26 is not used, the support plate 26 drives the hydraulic strut 28 to rotate, and the hydraulic strut 28 drives the second hinge seat 29 to interlock with the inner wall of the through groove 219, thereby facilitating the storage and fit between the structures.
[0036] In use, the support shell 13 is engaged with the groove on the wheelchair, and the support shell 13 drives the fitting plate 21 to fit against the wheelchair frame, completing the initial installation of the rubber protective net 12 and the seat cushion 11 on the support shell 13. The air pump 14, together with the air pipe 15 and the air inlet valve pipe 16, inflates the seat cushion 11, causing it to expand to fit different models of wheelchairs. When there is too much air inside the seat cushion 11, the air is released by the exhaust valve 17. The seat cushion 11, together with the buckles 19 and the clips 110 on the two restraint straps 18, can restrain and limit the patient, preventing the patient from falling off the wheelchair. The moving sleeve 24 drives the rotating block 25 to the fixed axis. Surface 23 moves, rotating block 25 drives support plate 26 to move, adjust according to the position of the injured limb of the patient. Rotating block 25 drives support plate 26 to rotate on the surface of fixed shaft 23 until support plate 26 and pad 214 are in stable contact with the patient's limb. Support plate 26 and first hinge seat 27 drive hydraulic strut 28 to move. Hydraulic strut 28 drives second hinge seat 29 to move until the snap joint 210 at the bottom of second hinge seat 29 is engaged with the inner wall of the snap hole 212 at the top of strip block 211, thus completing the support and fixation of support plate 26. This helps the patient to place the limb that needs to be upright and immobilized stably, improving the patient's comfort and safety when going out for testing.
[0037] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A limb anti-flexion and restraint device for postoperative patients, characterized in that, include: The seat cushion assembly (1) includes a seat cushion body (11), a rubber protective net (12) is provided at the bottom of the seat cushion body (11), a support shell (13) is provided at the bottom of the rubber protective net (12), an air pump (14) is provided on the inner wall of the support shell (13), the air pump (14) is fixedly connected to the air inlet valve pipe (16) at one end of the seat cushion body (11) through an air inlet pipe (15), and an exhaust valve (17) is provided on the side of one end of the seat cushion body (11). Support assembly (2), the support assembly (2) includes a bonding plate (21) installed on one end of the rubber protective net (12) and the support housing (13), and a mounting seat (22) is provided on the upper side of the other side of the bonding plate (21). A fixed shaft (23) is provided on the inner wall of the mounting seat (22). The surface of the fixed shaft (23) is fixedly connected to the rotating block (25) through a movable sleeve (24). A support plate (26) is fixedly connected to one side of the rotating block (25). One side of the bottom of the support plate (26) is rotatably connected to one end of the hydraulic strut (28) through a first hinge seat (27). A second hinge seat (29) is provided at the other end of the hydraulic strut (28). A snap joint (210) is provided at the bottom of the second hinge seat (29). The surface of the snap joint (210) is engaged with several snap holes (212) symmetrically opened on the top of the strip block (211). The strip block (211) is located below the surface of the bonding plate (21).
2. The postoperative limb anti-flexion and restraint device for patients according to claim 1, characterized in that: Both sides of the seat cushion (11) are provided with restraint straps (18), and the other ends of the two restraint straps (18) are respectively provided with buckles (19) and sleeves (110) that engage with each other.
3. The postoperative limb anti-flexion and restraint device for patients according to claim 1, characterized in that: The top of the support plate (26) is provided with an arc-shaped groove (213), and a protective pad (214) is bonded to the inner wall of the arc-shaped groove (213).
4. The postoperative limb anti-flexion and restraint device for patients according to claim 1, characterized in that: Mounting blocks are provided in the middle of both sides of the support plate (26). An elastic strap (215) is provided on the top of the mounting block. The Velcro on the other end of the elastic strap (215) is bonded and fixed to the Velcro on the surface of the other mounting block.
5. The postoperative limb anti-flexion and restraint device for patients according to claim 1, characterized in that: The surfaces at both ends of the strip block (211) are provided with connecting holes (216), and the inner walls of the two connecting holes (216) are threadedly connected to the slots (218) on the surface of the bonding plate (21) by connecting pins (217).
6. The postoperative limb anti-flexion and restraint device for patients according to claim 1, characterized in that: The support plate (26) is longer than the patient's thigh length and is made of a lightweight, high-strength material.
7. The postoperative limb anti-flexion and restraint device for patients according to claim 1, characterized in that: The surface of the bonding plate (21) above the strip block (211) has a through groove (219), and the inner wall of the through groove (219) can be inserted and connected to the surface of the hydraulic strut (28).
Citation Information
Patent Citations
Postoperative limb fixing device for orthopedic patient
CN216566258U