Postoperative dislocation prevention device for femoral head replacement
By designing a device that combines a partition, a U-shaped bracket, and an airbag to prevent dislocation, the problem of dislocation caused by turning over after femoral head replacement surgery is solved, achieving flexible fixation and a comfortable user experience, and reducing the risk of femoral head dislocation.
Patent Information
- Application Number
- CN202422492891.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-10-15
AI Technical Summary
After hip replacement surgery, patients are prone to dislocation of the femoral head from the hip socket when turning over or making other movements. Existing methods, such as using a pillow to prevent flexion, adduction and internal rotation, are not very effective and are prone to slippage during turning over, increasing the risk of dislocation.
An anti-dislocation device comprising a partition, a U-shaped retainer, and an airbag was designed. The airbag's inflation and deflation function and the U-shaped retainer's fixing strap prevent excessive flexion, adduction, and internal rotation of the affected leg. The airbag's tightness is controlled by the inflation and deflation tubes, and the fasteners and resistance components ensure a secure fixation effect.
Effectively prevents femoral head dislocation, suitable for different patients with different leg sizes, the airbag has adjustable tightness to avoid discomfort, ensures that blood circulation is not affected, and provides a comfortable fixation effect.
Smart Images
Figure CN223845902U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to postoperative anti-dislocation device technical field, and specifically relates to a femoral head replacement postoperative anti-dislocation device. BACKGROUND
[0002] During the femoral head replacement surgery, the hip joint capsule and muscle soft tissue will be damaged to a certain extent. If the intraoperative repair is insufficient, it is easy to cause the imbalance of the soft tissue tension around the hip joint, thereby affecting the stability of the hip joint. In order to reduce the risk of postoperative dislocation, the patient should strictly follow the doctor's suggestions and guidance, including selecting a suitable surgical approach, performing accurate prosthesis matching, keeping the affected limb in the abduction neutral position after the operation, avoiding excessive flexion and adduction and internal rotation activities, etc. When turning over, the patient will involuntarily flex the leg, and in addition to the imbalance of the soft tissue tension around the hip joint, the femoral head is more likely to be dislocated from the joint socket. Clinically, it is often recommended that a pillow be placed between the two legs of the patient in the recovery period to prevent the leg after femoral head replacement from excessive flexion and adduction and internal rotation activities. However, since there is no connecting piece between the pillow and the leg, the pillow is easy to slip out of the two legs during the turning-over process, thereby increasing the risk of the femoral head slipping out of the acetabular socket. SUMMARY
[0003] In view of the above problems, the purpose of the utility model is to provide a femoral head replacement postoperative anti-dislocation device to solve the problems raised in the background art.
[0004] To achieve the above purpose, the utility model adopts the technical scheme of a femoral head replacement postoperative anti-dislocation device, which comprises a barrier piece clamped between the two legs of a human body and used for preventing the affected leg from excessive flexion when the patient turns sideways. One side of the barrier piece is provided with a U-shaped seat used for connecting the barrier piece with the affected leg and positioning the affected leg. The inside of the U-shaped seat is connected with an air bag used for binding and fixing the affected leg. Both ends of the U-shaped seat are provided with an assembly used for inflating and deflating the air bag. The assembly used for inflating and deflating the air bag comprises installation grooves symmetrically opened on both sides of the U-shaped seat, an inflation pipe provided in the inside of one installation groove and having two ends respectively connected with the air bag and an inflation device, and a deflation pipe provided in the inside of the other installation groove and having one end connected with the air bag. The open end of the U-shaped seat is provided with a fastener used for secondarily fixing the affected leg placed in the inside of the U-shaped seat. The side of the barrier piece away from the U-shaped seat is provided with a resistance piece used for increasing the friction between the barrier piece and the normal leg.
[0005] The beneficial effects of this invention are as follows: Through the synergistic effect of the baffle, U-shaped seat, and airbag, this device can effectively prevent excessive flexion of the affected leg when the patient turns to the side or moves, thereby reducing the risk of femoral head dislocation. The airbag can be adjusted according to the patient's needs to ensure that the patient will not feel uncomfortable during long-term use. It is suitable for patients with different leg sizes. The inflation or deflation function of the airbag makes the device more flexible and convenient to use. Medical staff or family members can adjust the tightness of the airbag at any time according to the patient's specific situation and needs to achieve the best fixation effect.
[0006] The beneficial effects of this improvement are as follows: the inflation tube is connected to the inflation device, and valves are installed on both the inflation tube and the deflation tube. When inflating, the valve on the inflation tube is opened and the valve on the deflation tube is closed, so that the air bag inflates to bind and fix the affected leg. After the patient turns over, the valve on the deflation tube is opened to release the air bag from binding the affected leg, so as not to affect the blood circulation of the affected leg.
[0007] The beneficial effect of this improvement is that, when the patient turns over, the fastener can securely hold the affected leg inside the seat, preventing it from detaching from the airbag and causing accidental over-flexion, extension, adduction, and internal rotation of the leg.
[0008] The beneficial effects of this improvement are as follows: the partition can be a rigid sponge pad, commonly known as a hardened sponge pad, which can improve its rigidity and support, or it can be a rubber pad of the same length as the seat, which can prevent the seat from exerting hard pressure on the normal leg when the patient turns over. After the partition is connected to the seat, it can effectively prevent the femoral head from slipping out of the acetabulum.
[0009] To prevent the inflatable device from pressing down on the patient when they turn over:
[0010] As a further improvement to the above technical solution: the inflation tube is located on the side away from the partition.
[0011] The beneficial effects of this improvement are: the inflation tube is used to connect the air bag and the inflation device, and placing the inflation tube on the side away from the partition can prevent the inflation device from pressing under the patient when the patient turns over.
[0012] To make the device suitable for patients with different needs:
[0013] As a further improvement to the above technical solution: the opening of the U-shaped card holder can be set upward or downward.
[0014] The beneficial effects of this improvement are as follows: When the opening of the U-shaped seat faces upward, the affected leg is placed inside the U-shaped seat, and the fixing strap is located at the opening of the U-shaped seat and the top of the affected leg, which facilitates the connection of the fixing strap. However, because the bottom of the U-shaped seat has a certain height, there is a certain distance between the affected leg and the bed, which may cause discomfort. When the opening of the U-shaped seat faces downward, the U-shaped seat is locked onto the affected leg, and the fixing strap is located at the opening of the U-shaped seat and the bottom of the affected leg. At this time, the affected leg is in contact with the bed, which makes it inconvenient to connect the fixing strap. It may be necessary to install the fixing strap in advance before getting into bed.
[0015] To better hold and secure the patient with the airbag:
[0016] As a further improvement to the above technical solution: the shape of the airbag is set to a semi-circular arc that can fit into the legs of the human body.
[0017] The beneficial effect of this improvement is that it allows the airbag to fit snugly against the patient's legs, thus providing better clamping and fixation. Attached Figure Description
[0018] Fig. 1 This is a side view of the three-dimensional structure of the present invention;
[0019] Fig. 2 This is a side view of the structural plan of this utility model;
[0020] Fig. 3 This is a front view structural diagram of the present utility model;
[0021] Fig. 4 This is a schematic diagram of the rear view structure of this utility model;
[0022] Fig. 5 This is a schematic diagram of the rear view section of this utility model.
[0023] In the diagram: 1. Partition; 2. U-shaped bracket; 3. Airbag; 4. Mounting slot; 5. Inflation device; 6. Inflation pipe; 7. Deflator pipe; 8. Valve; 9. Fastener; 10. Velcro hook side; 11. Fixing strap; 12. Velcro rough side; 13. Resistance component; 14. Rubber strip. Detailed Implementation
[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0025] like Figs. 1-5As shown, a postoperative anti-dislocation device for femoral head replacement surgery includes a partition 1 that is clamped between the patient's legs to prevent excessive flexion of the affected leg when the patient turns to the side. A U-shaped retainer 2 is provided on one side of the partition 1 to connect the partition 1 to the affected leg and to position the affected leg. An airbag 3 is connected inside the U-shaped retainer 2 to restrain and fix the affected leg. Through the synergistic action of the partition 1, the U-shaped retainer 2, and the airbag 3, this device effectively prevents excessive flexion of the affected leg when the patient turns to the side or moves, thereby reducing the risk of femoral head dislocation. The airbag 3 can be adjusted according to the patient's needs to ensure that the patient does not feel discomfort during prolonged use. It is suitable for patients with different leg sizes. The inflation and deflation function of the airbag 3 makes the device more flexible and convenient to use. Medical staff or family members can adjust the tightness of the airbag 3 at any time according to the patient's specific situation and needs to achieve the best fixation effect.
[0026] Both ends of the U-shaped bracket 2 are equipped with components for inflating and deflating the airbag 3. These components include mounting slots 4 symmetrically arranged on both sides of the U-shaped bracket 2; an inflation pipe 6 located inside one of the mounting slots 4, with its two ends respectively used to connect the airbag 3 and the inflation device 5; and a deflation pipe 7 located inside the other mounting slot 4, with one end connected to the airbag 3. (See attached instruction manual) Fig. 5 As shown, one end of the inflation tube 6 and the deflation tube 7 both pass through the retainer and are connected to the airbag 3. The inflation tube 6 is connected to the inflation device 5, which can be an air pump, such as a vehicle-mounted air pump of model C2, with a built-in battery, requiring no external power supply, making it convenient for patients to use when turning over. Both the inflation tube 6 and the deflation tube 7 are equipped with valves 8. When inflating, the valve 8 on the inflation tube 6 is opened and the valve 8 on the deflation tube 7 is closed, allowing the airbag 3 to inflate and bind and fix the affected leg. After the patient turns over, the valve 8 on the deflation tube 7 is opened to release the airbag 3 from binding the affected leg, so as not to affect the blood circulation of the affected leg. In addition, the U-shaped retainer 2 can be adjusted according to the different leg of the patient who has undergone femoral head replacement surgery, so that the partition 1 can be located between the two legs of the body and above the normal affected leg when turning over.
[0027] The inflation tube 6 is located on the side away from the partition 1. The inflation tube 6 is used to connect the air bag 3 and the inflation device 5. By positioning the inflation tube 6 on the side away from the partition 1, the inflation device 5 can be prevented from pressing under the patient when the patient turns over.
[0028] The U-shaped bracket 2 has a fastener 9 at its open end for secondary fixation of the affected leg placed inside the U-shaped bracket 2. (See attached instruction manual.) Figs. 1-5As shown, the fastener 9 can be a Velcro strap. A fixing strap 11 with a Velcro hook face 10 is provided on the side of the U-shaped bracket 2 near the partition 1, and a Velcro loop face 12 is provided on the other side of the U-shaped bracket 2. After the affected leg is placed in the bracket, the fixing strap 11 is wrapped around the leg, and the Velcro hook face 10 is attached to the Velcro loop face 12. When the airbag 3 is inflated and clamps and fixes the affected leg, the side of the affected leg away from the airbag 3 is in close contact with the fixing strap 11. With the cooperation of the fixing strap 11, the airbag 3 and the bracket, the femoral head is prevented from slipping out of the acetabulum when the affected leg is turned to the side.
[0029] The opening of the U-shaped bracket 2 can be set upward or downward. When the opening of the U-shaped bracket 2 is upward, the affected leg is placed inside the U-shaped bracket 2, and the fixing strap 11 is located at the opening of the U-shaped bracket 2 and the top of the affected leg, which facilitates the connection of the fixing strap 11. However, because the bottom of the U-shaped bracket 2 has a certain height, there is a certain distance between the affected leg and the bed, which may cause discomfort. When the opening of the U-shaped bracket 2 is downward, the U-shaped bracket 2 is locked on the affected leg, and the fixing strap 11 is located at the opening of the U-shaped bracket 2 and the bottom of the affected leg. At this time, the affected leg is in contact with the bed, which makes it inconvenient to connect the fixing strap 11. It may be necessary to install the fixing strap 11 in advance before getting into bed.
[0030] The airbag 3 is shaped like a semi-circular arc that fits snugly against the legs of the human body, allowing the airbag 3 to conform to the legs of the human body and better clamp and fix the patient.
[0031] The partition 1 can be a rigid sponge pad, often referred to as a reinforced sponge pad, which enhances its rigidity and support. Alternatively, it can be a rubber pad of the same length as the seat, preventing the seat from exerting rigid pressure on the normal leg when the patient turns over. Connecting the partition 1 to the seat effectively prevents the femoral head from slipping out of the acetabulum. Figs. 1-2 As shown, the resistance element 13 can be multiple rubber strips 14, or it can be several rubber or latex protrusions, used to increase the friction between the partition 1 and the normal leg. When the patient is turned to the side, the patient can place the partition on the normal leg, thereby enabling the patient to maintain a comfortable posture when turned to the side.
[0032] The working principle and usage process of this utility model are as follows: When using this device, place the affected leg in the holder, connect the inflation tube 6 to the inflation pump, open the valve 8 on the inflation tube 6, and close the valve 8 on the deflation tube 7 to inflate the airbag 3 to bind and fix the affected leg. At the same time, wrap the fixing strap 11 around the leg and attach the hook side 10 to the hook side 12. When the airbag 3 inflates and clamps and fixes the affected leg, the side of the affected leg away from the airbag 3 is in close contact with the fixing strap 11. When the patient turns over, the affected leg can remain upright, avoiding excessive flexion and adduction / internal rotation. With the cooperation of the fixing strap 11, the airbag 3, and the holder, the femoral head is prevented from slipping out of the acetabulum when the patient turns to the side. After the patient turns over, open the valve 8 on the deflation tube 7 to release the airbag 3 from the affected leg to avoid affecting the blood circulation of the affected leg.
[0033] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the protection scope of this utility model.
Claims
1. A device for preventing dislocation after hip replacement surgery, comprising a barrier (1) clamped between the legs of a human body and intended to prevent overflexion of the affected leg when the patient is turning sideways, characterised in that: One side of the barrier (1) is provided with a U-shaped seat (2) for connecting the barrier (1) with the affected leg and for positioning the affected leg, the inside of the U-shaped seat (2) is connected with an air bag (3) for binding and fixing the affected leg, both ends of the U-shaped seat (2) are provided with an assembly for inflating and deflating the air bag (3), the assembly for inflating and deflating the air bag (3) comprises symmetrical installation grooves (4) opened on both sides of the U-shaped seat (2), an inflation pipe (6) arranged in one of the installation grooves (4) and having two ends for connecting the air bag (3) and an inflation device (5) respectively, and a deflation pipe (7) arranged in the other installation groove (4) and having one end connected with the air bag (3), an fastener (9) is arranged at the open end of the U-shaped seat (2) for fixing the affected leg placed in the U-shaped seat (2) again, and the side of the barrier (1) away from the U-shaped seat (2) is provided with a resistance element (13) for increasing the friction between the barrier (1) and the normal leg.
2. A dislocation prevention device for use after a femoral head replacement procedure according to claim 1, characterized in that: The inflation pipe (6) is arranged on the side away from the barrier (1).
3. A femoral head displacement prevention device after hip arthroplasty according to claim 1, characterized in that: The open end of the U-shaped seat (2) can be arranged upwardly or downwardly.
4. A femoral head displacement post-hip arthroplasty anti-dislocation device according to claim 1, wherein: The air bag (3) is in the shape of a semicircular arc which can be fitted to the leg of a human body.