A post-interventional limb immobilizer

By designing a highly adaptable limb fixator, combined with airbag compression, monitoring, and warning functions, the problems of post-interventional limb fixation maladaptation and pressure injury have been solved, achieving stable fixation of the affected limb and handling of abnormalities, thus promoting recovery.

CN224557628UActive Publication Date: 2026-07-28FUZHOU SECOND HOSPITAL (FUZHOU FUZHOU HOSPITAL OF INTEGRATED TRADITIONAL CHINESE & WESTERN MEDICINE FUZHOU OCCUPATIONAL DISEASE HOSPITAL)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUZHOU SECOND HOSPITAL (FUZHOU FUZHOU HOSPITAL OF INTEGRATED TRADITIONAL CHINESE & WESTERN MEDICINE FUZHOU OCCUPATIONAL DISEASE HOSPITAL)
Filing Date
2025-01-21
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

After interventional procedures, patients need to keep the affected limb immobilized to promote healing, prevent thrombosis, and reduce adverse reactions. However, long-term compression may lead to pressure injury and distal nerve congestion. Existing devices are difficult to adapt to the needs of patients of different body types and lack flexibility.

Method used

A device was designed that includes a fixing sleeve, an air pump, a pulse oximeter, a positioning hook, and an alarm. The device compresses the affected limb with an airbag, and can be adjusted to fit different body types by combining extension folds and adhesive patches. It is equipped with a pulse oximeter and a temperature sensor to monitor the condition of the affected limb, and is fixed to the edge of the bed by the positioning hook. The alarm indicates abnormalities.

Benefits of technology

It achieves stable fixation and adaptive adjustment of the affected limb, monitors blood oxygenation and temperature of the affected limb, prevents abnormalities, reduces pressure injury, promotes recovery, and provides timely treatment in case of abnormalities.

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Abstract

The utility model discloses a medical technical field's a kind of for postoperative limb fixator, increase air pump and fixing sleeve, can be bound constraint to limb by fixing sleeve, and by air pump inflation, make limb be oppressed and cannot bend, effectively limit the limb activity of patient, fixing sleeve inflates, to avoid limb bending and affect surgical site healing;Again by the pulling of positioning hook and limiting band, limit limb left and right shift, ensure that limb position remains fixed, more conducive to limb wound recovers as soon as possible, the extension wrinkle of the device can be stretched and extended or superimposed and shortened, and the whole fixing sleeve itself is pasted into a reel by pasting sheet and adjusting patch, can be conveniently adjusted thick and thin, to adapt to the wearing needs of different body type patients.
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Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a fixator for the affected limb after interventional procedures. Background Technology

[0002] Interventional therapy is a minimally invasive treatment that utilizes modern high-tech methods. Under the guidance of medical imaging equipment, specialized catheters, guidewires, and other precision instruments are introduced into the human body to diagnose and treat internal diseases locally.

[0003] The main reasons for immobilizing the lower limbs for 24 hours after interventional surgery are as follows:

[0004] 1. Ensure surgical site healing: Interventional procedures are usually performed through lower limb blood vessels such as the femoral artery. After the procedure, local pressure bandaging is required at the puncture site to prevent bleeding and infection. Keeping the lower limb immobilized helps the surgical site heal and reduces the risk of bleeding and other complications.

[0005] 2. Prevention of thrombosis: Lower limb immobilization reduces the stimulation of the surgical site by activity, thereby lowering the risk of thrombosis. Thrombosis can lead to serious complications such as pulmonary embolism; therefore, maintaining lower limb immobilization is crucial for preventing thrombosis.

[0006] 3. Promote contrast agent excretion: Contrast agents are commonly used in interventional procedures to help doctors observe blood vessels and lesions. Post-procedure immobilization of the lower limbs and drinking plenty of water can increase urine output, thereby accelerating the excretion of the contrast agent and reducing kidney damage.

[0007] 4. Reduce adverse reactions: After interventional surgery, patients may experience some adverse reactions, such as fever, liver area pain, nausea, etc.

[0008] Immobilizing the lower limbs allows patients to rest better, helps alleviate these uncomfortable symptoms, and stabilizes the patient's mental state.

[0009] Therefore, during the recovery process after interventional surgery, patients need to keep the affected limb fixed and not move it, and at the same time, they need to avoid involuntary knee flexion movements to facilitate the wound's rapid healing after surgery.

[0010] Prolonged compression can lead to pressure injuries in the affected limb and can also cause congestion and damage to the distal nerves in the foot. Therefore, depending on the patient's physical condition, it is also necessary to massage and manipulate the muscle tissues outside the surgical site of the affected limb, especially the distal end of the foot.

[0011] Based on this, the present invention designs a fixator for the affected limb after interventional surgery to solve the above problems. Utility Model Content

[0012] The purpose of this invention is to provide a limb fixation device for post-interventional surgery. It can bind and restrain the affected limb through a fixing sleeve, and compress the affected limb by inflating it with an air pump, effectively restricting the patient's limb movement. After the fixing sleeve is inflated, it can prevent the affected limb from bending, and the positioning hook can restrict the limb from moving left and right, ensuring that the affected limb remains fixed, which is more conducive to the rapid recovery of the wound. The extension folds of this device can be stretched and lengthened or folded and shortened. Moreover, the entire fixing sleeve itself is glued into a roll by adhesive and adjustment patches, which can be easily adjusted to meet the wearing needs of patients with different body types.

[0013] This invention is implemented as follows: a limb fixation device for post-interventional surgery, comprising:

[0014] Fixed sleeve, air pump, pulse oximeter, positioning hook, and warning device;

[0015] The fixing sleeve is a square sheet structure with an internal air bladder. Adhesive pieces are provided on both the left and right sides of the fixing sleeve. The fixing sleeve can be rolled into a straight cylindrical structure by means of the adhesive pieces on the left and right sides.

[0016] A limiting band is connected to each of the left and right sides of the fixed sleeve. A positioning hook is provided at the outer end of each limiting band. The positioning hook can be detached and hung on the side of the bed.

[0017] The air pump is an electric pump. The air pump's inflation pipe is connected to the internal air bladder of the fixed sleeve. An air valve is also installed on the air pump's inflation pipe. A controller is also installed on the air pump.

[0018] The pulse oximeter is a fingernail-type pulse oximeter, and both the pulse oximeter and the air valve are connected to the controller;

[0019] An alarm is provided on the outer side of the fixed sleeve, and a temperature sensor is provided on the inner side of the fixed sleeve. Both the alarm and the temperature sensor are connected to the controller.

[0020] Furthermore, an adjustment patch is provided on one side edge of the fixed sleeve. The adjustment patch extends outward on the side of the fixed sleeve and can also be detachably attached to the outer wall of the fixed sleeve.

[0021] The adjustment patch is a sheet-like structure extending outside the fixed sleeve, and there is no airbag inside the adjustment patch;

[0022] The adhesive patch is a Velcro strap, and the adjustment patch is also provided with Velcro straps. The adjustment patch is attached to the adhesive patch on the outer side of the fixing sleeve.

[0023] Furthermore, an adjustment buckle is also provided on the limiting band.

[0024] Furthermore, the warning device is a buzzer with a warning light.

[0025] Furthermore, the fixed sleeve is also provided with extended pleats in the left and right direction. The extended pleats can be unfolded and folded together. The extended pleats do not coincide with the positions of the temperature sensor and the alarm.

[0026] No airbags are installed within the area covered by the extended folds.

[0027] The beneficial effects of this utility model are: 1. The fixing sleeve of this utility model can be wound into cylinders of different thicknesses and can be adjusted by adjusting the patch and adhesive piece to meet the needs of patients of different body types. In addition, it is designed with extension pleats that can be unfolded or folded to fit patients with different limb lengths, making it more convenient and flexible to use.

[0028] 2. The fixed sleeve has an air bladder inside, which can compress the patient's affected limb. The inflated fixed sleeve can restrict the bending or extension of the affected limb, thereby preventing the movement of the affected limb. It also has a matching air pump and air valve, which can be automatically inflated and deflated by the controller. It is easy to adapt to the patient's vital signs detected by temperature sensor and pulse oximeter and can be adjusted automatically. It is more flexible to use. In case of abnormality, the alarm will sound a buzzer and light to prompt medical staff and patients to check and deal with the abnormality in time.

[0029] 3. This device also includes positioning hooks, which can hook both ends of the device onto the edge of the bed to limit the left and right movement of the fixing sleeve, thereby restricting the patient from rolling and swinging the affected limb and ensuring that the affected limb maintains a stable posture for recovery. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the fixed sleeve of this utility model in the roll state;

[0032] Figure 2 This is a schematic diagram of the unfolded structure of the fixed sleeve portion of this utility model;

[0033] Figure 3 This is a schematic diagram of the extended fold distribution structure on the fixing sleeve of this utility model;

[0034] Figure 4 This is a schematic diagram of the extended pleated structure of the fixed sleeve in the unfolded state of this utility model.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Fixing sleeve, 11-Adjusting patch, 12-Adhesive patch, 13-Extension pleat, 2-Air pump, 21-Pulse oximeter, 22-Air valve, 23-Controller, 3-Positioning hook, 31-Limiting band, 32-Adjusting buckle, 4-Alarm device, 41-Temperature sensor. Detailed Implementation

[0037] Please see Figures 1 to 4 As shown, this utility model provides a fixator for the affected limb after interventional surgery. To better understand the above technical solution, the following will describe the above technical solution in detail with reference to the accompanying drawings and specific embodiments.

[0038] In a specific embodiment of the technical solution of this utility model:

[0039] Includes a fixed sleeve 1, an air pump 2, a pulse oximeter 21, a positioning hook 3, and an alarm 4;

[0040] The fixing sleeve 1 is a square sheet structure with an internal air bladder. Adhesive pieces 12 are provided on both the left and right sides of the fixing sleeve 1. The fixing sleeve 1 can be rolled into a straight cylindrical structure by means of the adhesive pieces 12 on the left and right sides.

[0041] The fixed sleeve 1 is also provided with an extension pleat 13 along the left and right direction. The extension pleat 13 can be unfolded and folded. The extension pleat 13 does not coincide with the position of the temperature sensor 41 and the alarm 4. The length of the entire fixed sleeve 1 can be adjusted by unfolding or folding the extension pleat 13 to meet the needs of patients of different body lengths.

[0042] No airbags are installed within the area covered by the extended pleats 13. The airbags separated by the extended pleats 13 are connected by thin tubes in the fixing sleeve 1.

[0043] The fixed sleeve 1 is connected to a limiting band 31 on each of its left and right sides. Each limiting band 31 has a positioning hook 3 at its outer end. The positioning hook 3 can be detached and stably hooked to the side of the bed. The limiting band 31 is also equipped with an adjustment buckle 32, which can be a D-ring buckle, to facilitate adjustment of the length of the entire limiting band 31. This allows the device to be adjusted to fit both the left and right legs and to be firmly hooked to the bed. The fixed sleeve 1 is fixed against the bed by the positioning hook 3, ensuring that the entire fixed sleeve 1 remains in a fixed position. The limiting band 31 can be provided on each of the left and right sides according to the actual needs of the affected limb, so that it can be hooked to the bed for a more secure and stable connection. The limiting band 31 is only connected to the outer side of the fixed sleeve 1, making it easy to hook the left and right sides to the bed.

[0044] An adjustment patch 11 is also provided on one side edge of the fixed sleeve 1. It can only be on the left or right side. Depending on the direction or the leg being worn, the adjustment patch will be on the left or right side. The adjustment patch 11 extends outward on the side of the fixed sleeve 1. The adjustment patch 11 can also be detached and pasted on the outer wall of the fixed sleeve 1.

[0045] The adjusting patch 11 is a sheet-like structure extending outside the fixed sleeve 1, and there is no airbag inside the adjusting patch 11;

[0046] The adhesive patch 12 is a Velcro, and the adjustment patch 11 is also equipped with Velcro. The adjustment patch 11 is attached to the adhesive patch 12 on the outer side of the fixing sleeve 1, so as to adapt to the needs of limbs of different thicknesses. The adhesive patch 12 on the fixing sleeve 1 itself has the effect of self-adhesion between the inner and outer layers. By adding the adjustment patch 11, the adhesive can be repeatedly adhered to make it more secure, ensuring that the fixing sleeve 1 will not be inflated after inflation, thus ensuring the stability of the binding of the limb.

[0047] The air pump 2 is an electric pump. The air pump 2's inflation tube is connected to the internal air bladder of the fixed sleeve 1. The air pump 2's inflation tube is also equipped with an air valve 22, and the air pump 2 is also equipped with a controller 23.

[0048] Pulse oximeter 21 is a fingernail-type pulse oximeter. Both pulse oximeter 21 and valve 22 are connected to controller 23.

[0049] A warning device 4 is also provided on the outer side of the fixed sleeve 1. The warning device 4 is a buzzer with a warning light.

[0050] A temperature sensor 41 is also provided on the inner side of the fixed sleeve 1. Both the alarm 4 and the temperature sensor 41 are connected to the controller 23.

[0051] It should be noted that:

[0052] 1. The air pump 2 and air valve 22 of this device are controlled by the controller 23. This control device can use a microcontroller. As long as the pressure value is set, it can inflate or deflate. A pressure sensor is set on the inflation tube of the air pump 2 for data correlation control. This is a conventional medical structure and is found in electronic blood pressure monitors. The control of this device only needs to maintain a fixed pressure. When continuous compression occurs and the pulse oximeter 21 detects that the blood oxygen saturation of the affected limb is too low, the air valve 22 can be controlled to open a small opening to slowly deflate the air, so as to facilitate the recovery of blood oxygen saturation of the affected limb. 2. The temperature sensor 41 of this device can detect that the temperature of the affected limb is too low, provide timely warning and early warning, and avoid pressure injury to the affected limb.

[0053] When using this utility model, the left and right sides of the fixing sleeve 1 are in an unfolded state. Then, the area that needs to be compressed during surgery is placed against the inner side of the fixing sleeve 1, avoiding the area of ​​the extended folds 13, to ensure that the air bladder of the fixing sleeve 1 can compress the affected area. The wound of the affected limb has already been compressed, and the air bladder of the fixing sleeve 1 can further ensure that the wound is compressed firmly.

[0054] The fixing sleeve 1 is rolled into a cylinder and wrapped around the affected limb. The matching position of the adhesive pieces 12 on the left and right sides of the fixing sleeve 1 is adjusted according to the length and thickness of the affected limb. The extension or overlapping state of the extension folds 13 is also adjusted appropriately. Then the fixing sleeve 1 is attached and fixed to bind the affected limb. The pulse oximeter 21 is clamped on the toes of the affected limb. The air pump 2 and the air valve 22 are turned on. The air pump 2 begins to inflate the air bladder inside the fixing sleeve 1. After the fixing sleeve 1 is inflated, it restricts the affected limb.

[0055] Adjust the length of the limiting strap 31 by adjusting the buckle 32, and then hook the positioning hooks 3 at both ends onto the edge of the bed to ensure that the fixing sleeve 1 is securely hooked, thus completing the wearing process.

[0056] When the pulse oximeter 21 and temperature sensor 41 continuously monitor the affected limb, if the temperature of the affected limb is too low, the alarm 4 will sound an alarm, and the air valve 22 will open while the air pump 2 remains closed. The air in the fixed sleeve 1 will begin to deflate, releasing the pressure on the affected limb. Similarly, if the pulse oximeter 21 detects that the blood oxygen saturation of the affected limb is below 90%, it will also deflate, promptly depressurizing the fixed sleeve 1. If the affected limb recovers after a period of depressurization, the air pump 2 will turn on again to re-inflate the air in the fixed sleeve 1, keeping the affected limb stable and controlling the alarm 4 to close, eliminating the need for further medical examination.

[0057] If the symptoms in the affected limb do not improve after 3 minutes of deflation, it indicates that an examination is needed. This device is simple and easy to operate. After examination, the doctor can perform manual massage to promote blood circulation in the affected limb and restore the symptoms.

[0058] After the device has immobilized the affected limb for a period of time, such as half an hour, it performs air pressure massage on the affected limb by frequently deflating and inflating the air bladder inside the fixing sleeve 1, promoting blood circulation in other parts of the affected limb and effectively relieving the pressure on the affected limb.

[0059] The inner side of this device refers to the side that fits against the skin, and the outer side refers to the side facing outward after wrapping the affected limb. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0060] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A limb fixation device for use after interventional procedures, characterized in that, include: Fixed sleeve (1), air pump (2), pulse oximeter (21), positioning hook (3) and warning device (4); The fixing sleeve (1) is a square sheet structure with an internal air bladder. Adhesive pieces (12) are provided on both the left and right sides of the fixing sleeve (1). The fixing sleeve (1) can be rolled into a straight cylindrical structure by means of the adhesive pieces (12) on the left and right sides. The fixed sleeve (1) is connected to a limiting band (31) on each of its left and right sides. Each limiting band (31) has a positioning hook (3) at its outer end. The positioning hook (3) can be detached and hung on the side of the bed. The air pump (2) is an electric pump. The air pump (2) is connected to the internal air bag of the fixed sleeve (1). An air valve (22) is also provided on the air pump (2). A controller (23) is also provided on the air pump (2). The pulse oximeter (21) is a fingernail-type pulse oximeter, and both the pulse oximeter (21) and the air valve (22) are connected to the controller (23); An alarm (4) is provided on the outer side of the fixed sleeve (1), and a temperature sensor (41) is provided on the inner side of the fixed sleeve (1). The alarm (4) and the temperature sensor (41) are also connected to the controller (23). An adjustment buckle (32) is also provided on the limiting band (31).

2. The limb fixation device for post-interventional surgery according to claim 1, characterized in that: An adjustment patch (11) is also provided on one side edge of the fixed sleeve (1). The adjustment patch (11) extends outward on the side of the fixed sleeve (1). The adjustment patch (11) can also be detachably pasted on the outer wall of the fixed sleeve (1). The adjustment patch (11) is a sheet-like structure extending outside the fixed sleeve (1), and there is no airbag inside the adjustment patch (11); The adhesive patch (12) is a Velcro, and the adjustment patch (11) is also provided with Velcro. The adjustment patch (11) is attached to the adhesive patch (12) on the outer side of the fixing sleeve (1).

3. A limb fixation device for post-interventional surgery according to claim 1, characterized in that: The warning device (4) is a buzzer with a warning light.

4. A limb fixation device for post-interventional surgery according to claim 1, characterized in that: The fixed sleeve (1) is also provided with an extension pleat (13) in the left and right direction. The extension pleat (13) can be unfolded and folded together. The extension pleat (13) does not coincide with the position of the temperature sensor (41) and the alarm (4). No airbags are provided within the area covered by the extended folds (13).