Positioning cushion for post total hip arthroplasty body position keeping

Abstract

This invention discloses a positioning pad for maintaining body position after total hip arthroplasty. The positioning pad includes a first support pad and a second support pad, which are fixedly connected at a 90° angle or rotatably connected via a rotating mechanism. The end of the second support pad away from the first support pad has a lifting adjustment mechanism configured to adjust the angle between the first support pad and the horizontal direction by adjusting the height of the second support pad. The first support pad has a pair of anti-rotation pillows extending along a 30° hip abduction direction. The second support pad, away from the first support pad, has a T-shaped shoe extending along a 30° hip abduction direction. This positioning pad, by providing appropriate support and comfort, ensures that the patient maintains this specific position during recovery, which not only helps reduce sciatic nerve tension and displacement, lowering the incidence of postoperative complications, but also helps promote the patient's rehabilitation process.

Description

Technical Field

[0001] This utility model relates to a positioning pad for maintaining body position after total hip replacement surgery, belonging to the field of medical assistive device technology. Background Technology

[0002] Developmental dysplasia of the hip (DDH) is a general term for diseases caused by abnormal hip joint development leading to structural abnormalities. Studies show that the prevalence of DDH ranges from 1.52% to 29.9%. Total hip replacement (THA) is an effective and mature surgical method for treating adult Crowe IV type DDH. Surveys indicate that up to 42.6% of DDH patients under 50 years of age undergo THA. However, Crowe IV type DDH patients have a significantly higher risk of nerve injury during surgery and a higher incidence of postoperative dislocation than other types of patients. Research suggests that postoperatively, maintaining specific lower limb positions (hip flexion position: maintaining a hip flexion angle of 60° postoperatively; knee flexion position: maintaining a knee flexion angle of 90°; abduction position: fixing the hip abduction angle to 30°) helps protect the sciatic nerve, prevent hip dislocation, and promote rehabilitation. In current clinical practice, medical teams typically use T-shaped shoes and knee pads to maintain the fixed position of the affected limb. However, the existing solutions have many limitations: ① Temporary substitutes (such as clothing, pillows, and bolsters) are difficult to precisely control the limb angle; ② It is impossible to maintain a precise position continuously during daily activities such as turning over and using the toilet; ③ There is a potential risk of device-related pressure injury to the lower limb; ④ Patients experience poor comfort.

[0003] Therefore, given the special needs of postoperative rehabilitation for DDH patients, it is necessary to design a positioning pad for postoperative use by patients with high dislocation hip dysplasia (DDH). This assistive device can help fix the angle of the affected limb, reduce the risk of complications, promote postoperative rehabilitation, and improve patient comfort. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a positioning pad for maintaining the patient's position after total hip arthroplasty. This positioning pad can maintain the fixed position of the affected limb and meet the patient's postoperative requirements of hip flexion of 60°, knee flexion of 90°, and hip abduction of 30°, thereby helping to improve the patient's postoperative recovery and reduce the risk of nerve damage.

[0005] To achieve the above objectives, this utility model provides a positioning pad for maintaining body position after total hip arthroplasty. The positioning pad includes a lower limb pad module, which includes a support pad one and a support pad two with adjustable lengths. The support pad one and the support pad two are fixedly connected at a 90° angle or rotatably connected by a rotating mechanism.

[0006] The support pad two is provided with a lifting adjustment mechanism at the end away from the support pad one. The lifting adjustment mechanism is configured to adjust the angle between the support pad one and the horizontal direction by adjusting the height of the support pad two.

[0007] The support pad is provided with a pair of anti-rotation pillow pads along the extension direction of 30° hip abduction.

[0008] The second support pad is provided with a T-shaped shoe on the side away from the first support pad, extending along the leg direction with the hip joint abducted at 30°. The T-shaped shoe is fixedly connected to the second support pad by bolts and nuts.

[0009] Optionally, both support pad one and support pad two are rectangular support plates or support frames covered with a buffer layer.

[0010] Optionally, the lifting adjustment mechanism includes a base, a lifting ladder disposed between the base and the foot pad, and an adjustment knob. The lifting ladder is a telescopic structure, and the height of the lifting ladder relative to the foot pad can be adjusted by adjusting the knob.

[0011] Optionally, a base is provided at the bottom of the end of the support plate one that is away from the support plate two.

[0012] Optionally, one or both of the support pads 1 and 2 may be configured to have adjustable length.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] (1) This positioning pad ensures that the patient maintains this specific position during recovery by providing appropriate support and comfort, which not only helps reduce the tension and displacement of the sciatic nerve and reduce the incidence of postoperative complications, but also helps to promote the patient's recovery process.

[0015] (2) The positioning pad provided by this utility model has the characteristics of being easy to clean and disinfect, and is suitable for use in hospitals and homes. This utility model provides an effective solution for the postoperative recovery of patients with high dislocation DDH total hip replacement by providing a safe and comfortable postoperative positioning pad, and has significant clinical application value. It can not only improve the quality of life of patients, but also reduce the follow-up nursing burden of medical institutions, and has broad promotion and application potential. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a positioning pad provided in the embodiment;

[0017] Figure 2 This is a schematic diagram of the lifting and adjusting mechanism;

[0018] Figure 3 This is a schematic diagram of support pad one (support pad two) as a support plate with an adjustable length;

[0019] Figure 4 This is a schematic diagram of support pad one (support pad two) as a foldable and adjustable length support plate;

[0020] Figure 5 A schematic diagram of a positioning pad with a base;

[0021] Attached diagram descriptions: 1. Support pad one; 2. Support pad two; 3. T-shaped shoe; 4. Lifting and adjusting mechanism; 5. Anti-rotation pillow; 4-1. Base; 4-2. Lifting ladder; 4-3. Adjusting knob; 5-1. Connecting hole one; 5-2. Connecting hole two; 6. Base. Detailed Implementation

[0022] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] This embodiment provides a positioning pad for maintaining body position after total hip arthroplasty, such as... Figure 1 As shown, the positioning pad includes support pad 1 and support pad 2. Support pad 1 and support pad 2 are rectangular support plates or frames covered with a cushioning layer. Support pad 1 supports the patient's thigh, and support pad 2 supports the patient's lower leg. Support pad 1 and support pad 2 are fixedly connected at a 90° angle, or they are rotatably connected via a rotating mechanism (e.g., a hinge). The angle between them can be adjusted to 90° or other angles. This rotatable connection allows support pad 1 and support pad 2 to be stacked when not in use for easy storage. Support pad 2 is located away from the support pad. A T-shaped shoe 3 is provided on one side of the pad 1. The T-shaped shoe 3 is fixedly connected to one side of the support pad 2 by bolts and nuts, so that the T-shaped shoe 3 is fixedly connected in the leg extension direction with the hip joint abducted at 30°. Correspondingly, the support pad 2 has multiple pairs of connecting holes (not shown in the figure) along the leg extension direction with the hip joint abducted at 30°, which are used to allow the bolts to pass through the connecting holes and be fixed with nuts. The fixing position of the T-shaped shoe 3 can be adjusted according to the size of the patient's lower limb. The support pad 1 is also provided with a pair of anti-rotation pillow pads 5 along the extension direction with the hip joint abducted at 30°. When in use, they are located on the inner thigh to prevent thigh rotation.

[0025] The support pad 2, at the end furthest from the support pad 1, is provided with a lifting adjustment mechanism 4. A schematic diagram of the lifting adjustment mechanism 4 is shown below. Figure 2 As shown, it includes a base 4-1, a lifting ladder 4-2 disposed between the base 4-1 and the bottom of one side of the support pad 2, and an adjustment knob 4-3. The lifting ladder 4-2 is a telescopic structure, and the height of the support pad 2 can be adjusted by adjusting the lifting ladder 4-2 through the adjustment knob 4-3. By adjusting the height of the support pad 2, the angle between the support pad 1 and the horizontal direction can be easily adjusted to 60°, thereby satisfying the requirement of maintaining the patient's postoperative hip flexion at 60°.

[0026] In this invention, the buffer layer is made of memory foam or sponge material, which provides effective support while adapting to the patient's body shape and enhancing comfort.

[0027] In this invention, the surfaces of the support pad 1 and the support pad 2 are covered with a waterproof, easy-to-clean, and antibacterial high-elasticity fabric to maintain hygiene and durability. The high-elasticity fabric includes, but is not limited to, polyester fiber fabric, cotton fiber and spandex fiber blended fabric.

[0028] In this invention, the material of the support plate or support frame is MDF, wood, plastic or composite board.

[0029] In this invention, the dimensions of the positioning pads (support pad one and support pad two) are designed based on the height and leg size of Chinese people, and can be designed in multiple different sizes to meet the needs of different patients; in addition, one or both of support pad one and support pad two can be designed to be length-adjustable, for example, designed to be telescopically adjustable, and their length can be adjusted by setting a telescopic plate, such as... Figure 3 As shown, support pad 1 and support pad 2 are foldable, comprising multiple hinged plates, such as... Figure 4 As shown, its length is adjustable by folding and unfolding to meet the needs of different patients.

[0030] In addition, to increase the overall stability of the positioning pad, a base 6 is installed at the bottom of the end of support pad 1 away from support pad 2, such as... Figure 5 As shown, the base 6 can be further provided with holes (not shown in the figure) for fixed connection with the hospital bed by bolts and nuts. Holes can also be drilled on the hospital bed to facilitate the installation of the positioning pad as needed.

[0031] The positioning pad of this invention is used to maintain the patient's position after total hip arthroplasty. Its method of use is as follows:

[0032] The angle between support pad 1 and support pad 2 is adjusted to 90° using a rotating mechanism (no adjustment is needed if support pad 1 and support pad 2 are fixedly connected). Then, the height of the lower limb pad module is adjusted using the lifting adjustment mechanism 4 to adjust the angle between support pad 1 and the horizontal direction to 60°. After surgery, the patient places their thigh on support pad 1, with the thigh positioned outside the anti-rotation pillow 5, and their lower leg on support pad 2. Then, the patient puts on a T-shaped shoe 3 and secures it to support pad 2 with bolts and nuts. This satisfies the following positioning or maintenance requirements:

[0033] 1) Hip flexion position: Maintain a hip flexion angle of 60° during the postoperative period.

[0034] 2) Knee flexion position: Keep the knee joint flexed at 90°.

[0035] 3) Abduction position: The angle of hip abduction is fixed at 30°.

[0036] 4) Anti-rotation: The anti-rotation pillow on the positioning pad can restrict the rotational movement of the affected limb to ensure that the joint is stable in the preset position.

[0037] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make several improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the scope of protection of this utility model.

Claims

1. A positioning pad for maintaining body position after total hip arthroplasty, characterized in that, The positioning pad includes a support pad one and a support pad two, which are fixedly connected at a 90° angle or rotatably connected by a rotating mechanism. The support pad two is provided with a lifting adjustment mechanism at the end away from the support pad one. The lifting adjustment mechanism is configured to adjust the angle between the support pad one and the horizontal direction by adjusting the height of the support pad two. The support pad is provided with a pair of anti-rotation pillow pads along the extension direction of 30° hip abduction. The second support pad is provided with a T-shaped shoe on the side away from the first support pad, extending along the leg direction with the hip joint abducted at 30°. The T-shaped shoe is fixedly connected to the second support pad by bolts and nuts.

2. The positioning pad as described in claim 1, characterized in that, Both support pad one and support pad two are rectangular support plates or support frames covered with a buffer layer.

3. The positioning pad as described in claim 1, characterized in that, The lifting and adjusting mechanism includes a base, a lifting ladder disposed between the base and the foot pad, and an adjusting knob. The lifting ladder is a telescopic structure, and the height of the lifting ladder relative to the foot pad can be adjusted by adjusting the knob.

4. The positioning pad as described in claim 1, characterized in that, A base is provided at the bottom of the end of the support pad one that is away from the support pad two.

5. The positioning pad as described in claim 1, characterized in that, One or both of the support pads are configured to be length-adjustable.

Images