A hip replacement postoperative anti-dislocation warning system

Abstract

The present invention proposes a hip replacement postoperative anti-dislocation warning system, which includes a knee joint sensor, a distance sensing patch, an infrared transmitter, an infrared receiver, a blocking alarm buzzer and an analysis and processing device. The knee joint sensor is worn at the knee joint of the affected limb, the distance sensing patch is attached to the intersection of the clavicle midline and the second rib, the infrared transmitter is arranged at the navel, and the infrared receiver is arranged at the end of the bed. In the present invention, the patient's affected limb is judged to be flexed forward by more than 90° through distance detection, and the patient's affected limb is judged to cross the midline through infrared blocking detection, so as to better remind the patient to pay attention to the risk of dislocation.

Description

Technical Field

[0001] The invention relates to the technical field of postoperative rehabilitation, in particular to an anti-dislocation early warning system after hip replacement surgery. Background Art

[0002] Within three months after hip replacement, in order to prevent dislocation of the hip prosthesis, the patient's body position will be restricted clinically. At present, the general clinical practice is to educate patients not to take the following positions: 1. Do not flex the hip too much, and the hip flexion should not exceed 90°, which is manifested in not sitting on a low stool or a low sofa; 2. Avoid crossing your legs, especially when the affected limb is placed on the healthy limb, which is manifested in avoiding crossing your legs; 3. Try to lie flat when sleeping, with the hip and knee straight and the hip joint naturally extended. If you choose to lie on your side, the affected limb is above the healthy limb, and two pillows can be placed between the knee joint and the legs to maintain a certain abduction function of the patient's hip joint.

[0003] After surgery, patients are prone to excessive flexion and adduction of the hip joint due to their own negligence. Therefore, it is necessary to design an alarm system to remind patients of the risk of dislocation. Summary of the invention

[0004] In order to solve the technical problem of the risk of dislocation of patients after hip replacement in the prior art, the hip replacement anti-dislocation warning system proposed by the present invention includes a knee joint sensor, a distance sensing patch, an infrared transmitting device, an infrared receiving device, a blocking alarm buzzer and an analysis and processing device;

[0005] The knee joint sensor is worn at the knee joint of the affected limb, the distance sensing patch is attached to the intersection of the clavicle midline and the second rib, the infrared transmitting device is arranged at the navel, and the infrared receiving device is arranged at the end of the bed.

[0006] Preferably, the knee joint sensor includes an acceleration sensor and a magnetic field signal module, the acceleration sensor detects acceleration in the vertical direction for determining the motion state of the affected limb, and the magnetic field signal module emits a fixed magnetic field.

[0007] Preferably, the intensity of the fixed magnetic field can be adjusted according to the safe movement distance, which is the distance between the distance sensing patch and the knee joint sensor when the patient's affected limb is flexed 90°.

[0008] Preferably, the distance sensing patch includes a distance alarm buzzer and a miniature magnetic field sensor, and the miniature magnetic field sensor can determine the distance between the knee joint sensor and the distance sensing patch according to the magnetic field strength.

[0009] Preferably, during operation, when the acceleration sensor detects acceleration in the vertical direction, the magnetic field signal module starts to emit a fixed magnetic field, and the micro magnetic field sensor determines the distance between the knee joint sensor and the distance sensing patch based on the magnetic field strength. When the distance is less than the movement safety distance, the distance alarm buzzer will give a sound prompt to remind the patient to pay attention to his body position.

[0010] Preferably, the infrared receiving device is arranged opposite to the infrared transmitting device to receive infrared signals, and the infrared receiving device is connected to the blocking alarm buzzer.

[0011] Preferably, when the patient's affected limb crosses the midline, the infrared receiving relationship between the infrared receiving device and the infrared emitting device will be cut off, and the blocking alarm buzzer will give a sound prompt to remind the patient to pay attention to his body position.

[0012] Preferably, the distance alarm buzzer and the blocking alarm buzzer have different sound frequencies.

[0013] Preferably, the analysis and processing device includes a sound collection module, a memory, a processor and a communication module.

[0014] Preferably, the sound collection module collects alarm sounds in the environment and transmits the alarm data to the processor, and the functions of the processor include: 1) judging whether the current alarm is a distance alarm or a blocking alarm based on the frequency of the alarm sound, and calculating the duration of the alarm, and storing the alarm type and duration as a record in the memory; 2) analyzing the comprehensive situation of the alarm within a specific time period, assessing the patient's dislocation risk, and transmitting the dislocation risk to the doctor's computer through the communication module to remind the doctor to pay attention.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Distance detection can be used to determine whether the patient's affected limb has been flexed more than 90°, and infrared isolation detection can be used to determine whether the patient's affected limb has crossed the midline, thereby better reminding patients of the risk of dislocation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the early warning system of the present invention.

[0018] In the figure, 1- knee joint sensor, 2- distance sensing patch, 3- infrared transmitting device, 4- infrared receiving device. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0020] like Figure 1 As shown, the hip replacement postoperative anti-dislocation warning system proposed by the present invention comprises a knee joint sensor 1, a distance sensing patch 2, an infrared transmitter 3, an infrared receiver 4, a blocking alarm buzzer (not shown in the figure) and an analysis and processing device (not shown in the figure). The knee joint sensor is worn on the knee joint of the affected limb, the distance sensing patch is attached to the intersection of the clavicle midline and the second rib, the infrared transmitter is set at the navel, and the infrared receiver is set at the end of the bed.

[0021] The knee joint sensor includes an acceleration sensor and a magnetic field signal module. The acceleration sensor detects the acceleration in the vertical direction and is used to determine the movement state of the affected limb. The magnetic field signal module emits a fixed magnetic field. The strength of the magnetic field can be adjusted according to the safe distance for movement. The safe distance for movement is the distance between the distance sensing patch and the knee joint sensor when the patient's affected limb is flexed 90°. This distance varies from person to person and needs to be determined based on the patient's actual situation. The distance sensing patch includes a distance alarm buzzer and a micro magnetic field sensor. The micro magnetic field sensor can determine the distance between the knee joint sensor and the distance sensing patch based on the magnetic field strength. When working, when the acceleration sensor detects the acceleration in the vertical direction, it means that the patient's affected limb may be flexing forward. At this time, the magnetic field signal module starts to emit a fixed magnetic field. The micro magnetic field sensor determines the distance between the knee joint sensor and the distance sensing patch based on the magnetic field strength. When the distance is less than the safe distance for movement, the distance alarm buzzer will sound a prompt to remind the patient to pay attention to the body position.

[0022] The infrared receiving device and the infrared transmitting device are arranged opposite to each other to receive infrared signals. The infrared receiving device is connected to the blocking alarm buzzer. When the patient's affected limb crosses the midline, the infrared receiving relationship between the infrared receiving device and the infrared transmitting device will be cut off, and the blocking alarm buzzer will give a sound prompt to remind the patient to pay attention to his body position.

[0023] The distance alarm buzzer and the blocking alarm buzzer have different sound frequencies.

[0024] The analysis and processing device includes a sound collection module, a memory, a processor and a communication module. The sound collection module collects the alarm sound in the environment and transmits the alarm data to the processor. The functions of the processor include: 1) judging whether it is a distance alarm or a blocking alarm according to the frequency of the alarm sound, and calculating the duration of the alarm, and storing the alarm type and duration as a record in the memory; 2) analyzing the comprehensive situation of the alarm within a specific time period (for example, within a day), assessing the patient's dislocation risk, and transmitting the dislocation risk to the doctor's computer through the communication module to remind the doctor to pay attention.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] Distance detection can be used to determine whether the patient's affected limb has been flexed more than 90°, and infrared isolation detection can be used to determine whether the patient's affected limb has crossed the midline, thereby better reminding patients of the risk of dislocation.

[0027] The above disclosure is only the preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the present invention. It should be pointed out that for those skilled in the art, any equivalent changes made to the scheme of the present invention without departing from the design structure and principle of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A hip replacement postoperative anti-dislocation warning system, characterized in that ,The post-operative anti-dislocation warning system for hip replacement includes a knee joint sensor, a distance sensing patch, an infrared transmitting device, an infrared receiving device, a blocking alarm buzzer and an analysis and processing device; The knee joint sensor is worn at the knee joint of the affected limb, the distance sensing patch is attached to the intersection of the clavicle midline and the second rib, the infrared transmitting device is arranged at the navel, and the infrared receiving device is arranged at the tail of the bed; The knee joint sensor includes an acceleration sensor and a magnetic field signal module, wherein the acceleration sensor detects the acceleration in the vertical direction for determining the motion state of the affected limb, and the magnetic field signal module emits a fixed magnetic field; The intensity of the fixed magnetic field can be adjusted according to the safe distance of movement, which is the distance between the distance sensing patch and the knee joint sensor when the patient's affected limb is flexed 90° forward; The distance sensing patch includes a distance alarm buzzer and a micro magnetic field sensor, and the micro magnetic field sensor determines the distance between the knee joint sensor and the distance sensing patch according to the magnetic field strength; During operation, when the acceleration sensor detects acceleration in the vertical direction, the magnetic field signal module starts to emit a fixed magnetic field, and the micro magnetic field sensor determines the distance between the knee joint sensor and the distance sensing patch according to the magnetic field strength. When the distance is less than the safe distance for movement, the distance alarm buzzer will give a sound prompt to remind the patient to pay attention to his body position.

2. The hip replacement postoperative anti-dislocation warning system according to claim 1, characterized in that: The infrared receiving device is arranged opposite to the infrared emitting device to receive infrared signals, and the infrared receiving device is connected to the blocking alarm buzzer.

3. The hip replacement postoperative anti-dislocation warning system according to claim 2, characterized in that: When the patient's affected limb crosses the midline, the infrared receiving relationship between the infrared receiving device and the infrared emitting device will be cut off, and the blocking alarm buzzer will give a sound prompt to remind the patient to pay attention to his body position.

4. The hip replacement postoperative anti-dislocation warning system according to claim 2, characterized in that: The distance alarm buzzer and the blocking alarm buzzer have different sound frequencies.

5. The hip replacement postoperative anti-dislocation warning system according to claim 4, characterized in that: The analysis and processing device includes a sound collection module, a memory, a processor and a communication module.

6. The hip replacement postoperative anti-dislocation warning system according to claim 5, characterized in that: The sound collection module collects alarm sounds in the environment and transmits the alarm data to the processor. The functions of the processor include: 1) judging whether it is a distance alarm or a blocking alarm based on the frequency of the alarm sound, and calculating the duration of the alarm, and storing the alarm type and duration as a record in the memory; 2) analyzing the comprehensive situation of the alarm within a specific time period, evaluating the patient's dislocation risk, and transmitting the dislocation risk to the doctor's computer through the communication module to remind the doctor to pay attention.

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