CN216495339U - Wearable anterior cruciate ligament tears supplementary diagnostic system - Google Patents

Abstract

The utility model discloses a wearable anterior cruciate ligament tear auxiliary diagnosis system which comprises a wearable self-driven sensor, a signal conditioning unit, a wearable knee protection unit and a mobile terminal, wherein the wearable self-driven sensor is electrically connected with the signal conditioning unit, the signal conditioning unit is wirelessly connected with the mobile terminal, the wearable knee protection unit is worn on a knee, and the wearable self-driven sensor and the signal conditioning unit are installed on the wearable knee protection unit; the wearable self-driven sensor converts the mechanical energy of the knee joint flexion motion into an electric signal; the signal conditioning unit collects and processes the electric signal and transmits the electric signal to the mobile terminal; the mobile terminal processes the electric signal and then displays and stores the electric signal; according to the utility model, the Lachman test is used for converting the micro mechanical energy of the knee joint flexion activity into the electric signal, the antedisplacement variation of the tibia relative to the femur is obtained at the mobile terminal after the processing, and the diagnosis of the front fork ligament tear by medical staff is assisted by comparing with a normal value.

Description

Wearable anterior cruciate ligament tears supplementary diagnostic system

Technical Field

The utility model relates to the technical field of wearable sensing, in particular to a wearable anterior cruciate ligament tearing auxiliary diagnosis system.

Background

Athletes after intense physical resistance can cause anterior fork ligament to tear, resulting in season reimbursement and even affecting the entire career. The anterior fork ligament, connecting the tibia and the femur, mainly functions to maintain knee joint stability, with anterior fork ligament tears being the most common sports injuries. If the anterior fork ligament can not be diagnosed in time after being torn, the meniscus can be torn, and the incidence rate of knee joint arthritis is increased. At present, two methods for diagnosing the tear of the anterior fork ligament are mainly used, one method is an imaging examination, and the imaging examination is mainly assisted by a nuclear magnetic resonance imager and an arthroscope. The accuracy is high, but the nuclear magnetic resonance imager can not diagnose in real time, the time consumption is relatively long, and the price is high. The other is physical examination, and the lachman test is the most effective and accurate physical examination method. The patient is in a supine position, the examined limb is positioned at the side of the examiner, one hand bends 15-30 degrees to tightly hold the fixed femur from the outer side, the thumb of the other hand holds the inner joint edge at the upper end of the tibia, and the other four fingers exert forward lifting force behind the knee, so that the tibia is sensed to move forwards relative to the femur. The Lachman test is very accurate in diagnosing ACL injuries when used with front drawer tests and other diagnostic tools.

The existing diagnosis tools for assisting physical examination mainly comprise GNRB and KT1000, the GNRB is an upgraded version of the KT1000, automatic accurate testing and repeatability are advantages of the GNRB, and the stability of the knee is objectively evaluated. However, the two instruments have the defects of large volume, heavy weight and no wearing. The friction nanometer generator brings huge changes to the medical health field in recent years, and if a wearable, light and high-precision system for diagnosing the tear of the anterior fork ligament can be designed by combining the friction nanometer generator (TENG), the application pin of the wearable electronic in the personal health medical field can be expanded greatly.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a wearable anterior cruciate ligament tearing auxiliary diagnosis system to solve the problems of large size, heavy weight and non-wearability in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

a wearable anterior cruciate ligament tear auxiliary diagnosis system comprises a wearable self-driven sensor, a signal conditioning unit, a wearable knee protection unit and a mobile terminal, wherein the wearable self-driven sensor is electrically connected with the signal conditioning unit, the signal conditioning unit is wirelessly connected with the mobile terminal, the wearable knee protection unit is worn on a knee, and the wearable self-driven sensor and the signal conditioning unit are installed on the wearable knee protection unit; the wearable self-driven sensor is used for converting the mechanical energy of the knee joint flexion activity into an electric signal; the signal conditioning unit is used for collecting and processing the electric signal and transmitting the electric signal to the mobile terminal; and the mobile terminal is used for displaying and storing the electric signal after being processed.

Further, a cover unit, a rotor unit, a stator unit, a shaft and a rope winding member; the rotor unit comprises a rotor, a rotor base, a coil spring and a rotor friction layer, the rotor is fixedly connected with the rotor base, one end of the coil spring is fixed on the inner wall of the rotor and wound around the inner wall of the rotor, the other end of the coil spring is fixed on the shaft, and the rotor friction layer is attached to the outer wall of the rotor base; the stator unit comprises a stator, a flexible circuit board and a stator friction layer, a hole is formed in the side wall of the stator, the flexible circuit board is fixedly installed on the inner wall of the stator, and the stator friction layer is attached to the inner wall of the flexible circuit board; the shaft is arranged in the center of the stator, the rotor unit is mounted on the shaft through the rotor base, and the cover unit is mounted on the rotor unit; the rope winding piece comprises a fixing piece and a rope, the fixing piece is fixed at the upper end of the rotor, and the rope is wound on the fixing piece and penetrates out of the hole.

Further, the rotor friction layer is a periodic grid electrode structure.

Furthermore, the flexible circuit board is of a periodic interdigital grid structure.

Furthermore, the stator comprises an adhesive tape, and the flexible circuit board and the stator friction layer are respectively arranged on the inner wall of the stator and the inner wall of the flexible circuit board through the adhesive tape.

Further, the adhesive tape is a VHB nanometer double-sided tape.

Further, the stator friction layer is made of a negative electrode material.

Furthermore, the signal conditioning unit comprises a data acquisition module and a digitization and wireless communication module, the data acquisition module is electrically connected with the wearable self-driven sensor, and the digitization and wireless communication module is electrically connected with the data acquisition module and the mobile terminal respectively; the data acquisition module is used for acquiring the electric signals, and the digitization and wireless communication module is used for converting the electric signals into digital signals and transmitting the digital signals to the mobile terminal.

Further, the wearable knee pad unit comprises a knee pad worn on the knee and a fixing device mounted on the knee pad, and the wearable self-driven sensor and the signal conditioning unit are mounted on the knee pad through the fixing device.

Further, the knee pad is a medical knee pad or a sports knee pad.

The utility model has at least the following beneficial effects: the utility model provides a wearable anterior cruciate ligament tear auxiliary diagnosis system which comprises a wearable self-driven sensor, a signal conditioning unit, a wearable knee protection unit and a mobile terminal, wherein the wearable self-driven sensor is electrically connected with the signal conditioning unit, the signal conditioning unit is wirelessly connected with the mobile terminal, the wearable knee protection unit is worn on a knee, and the wearable self-driven sensor and the signal conditioning unit are installed on the wearable knee protection unit; the wearable self-driven sensor is used for converting the mechanical energy of the knee joint flexion activity into an electric signal; the signal conditioning unit is used for collecting and processing the electric signal and transmitting the electric signal to the mobile terminal; the mobile terminal is used for processing the electric signals and then displaying and storing the electric signals; according to the utility model, the Lachman test is used for converting the micro mechanical energy of the knee joint flexion activity into the electric signal, the antedisplacement variation of the tibia relative to the femur is obtained at the mobile terminal after the processing, and the diagnosis of the front fork ligament tear by medical staff is assisted by comparing with a normal value.

Drawings

In order to more clearly illustrate the prior art and the present invention, the drawings which are needed to be used in the description of the prior art and the embodiments of the present invention will be briefly described. It should be apparent that the drawings in the following description are merely exemplary, and that other drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort.

The structures, proportions, sizes, and other dimensions shown in the specification are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, and it is to be understood that all such modifications, changes in proportions, or alterations in size which do not affect the efficacy or objectives of the utility model are not to be seen as within the scope of the present invention.

Fig. 1 is a diagnostic flow diagram of a wearable anterior cruciate ligament tear-assisting diagnostic system provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a wearable self-driven sensor provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a stator of the wearable self-driven sensor according to an embodiment of the present invention;

FIG. 4 is a signal flow diagram of a wearable anterior cruciate ligament tear-assisting diagnosis system provided by an embodiment of the present invention;

fig. 5 is a wearing schematic diagram of the wearable anterior cruciate ligament tear-assisting diagnosis system provided by the embodiment of the utility model.

Description of reference numerals:

1-wearable self-driven sensors; 11-a cover unit; 12-a cord wrap; 13-a rotor unit; 131-a rotor; 132-coil springs; 133-rotor base; 134-rotor friction layer; 14-a stator unit; 141-stator friction layer; 142-a flexible circuit board; 143-a stator; 1431-well; 1432-slotted hole; 15-axis; 151-card slot; 2-a signal conditioning unit; 21-a data acquisition module; 22-a digitizing and wireless communication module; 3-a mobile terminal; 4-wearable knee protection unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "first," "second," "third," "fourth," and the like in the description and claims of the present invention and in the above-described drawings (if any) are intended to distinguish between referenced items. For a scheme with a time sequence flow, the term expression does not need to be understood as describing a specific sequence or a sequence order, and for a scheme of a device structure, the term expression does not have distinction of importance degree, position relation and the like.

Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements specifically listed, but may include other steps or elements not expressly listed that are inherent to such process, method, article, or apparatus or that are added to a further optimization scheme based on the present inventive concept.

Referring to fig. 1, an embodiment of the present invention provides a wearable anterior cruciate ligament tear auxiliary diagnosis system, including a wearable self-driven sensor 1, a signal conditioning unit 2, a wearable knee protection unit 4 and a mobile terminal 3, wherein the wearable self-driven sensor 1 is electrically connected to the signal conditioning unit 2, the signal conditioning unit 2 is wirelessly connected to the mobile terminal 3, the wearable knee protection unit 4 is worn on a knee, and the wearable self-driven sensor 1 and the signal conditioning unit 2 are mounted on the wearable knee protection unit 4 for assisting in diagnosis of tear of the anterior cruciate ligament; the wearable self-driven sensor 1 is used for converting micro mechanical energy of knee joint flexion motion into an electric signal and providing a sensing signal source for a sensing system; the signal conditioning unit 2 is used for collecting and processing the electric signal and transmitting the electric signal to the mobile terminal 3; the mobile terminal 3 is used for displaying and storing the electric signal after being processed, and the mobile terminal 3 comprises a mobile phone or a computer and other equipment. According to the wearable auxiliary diagnosis system for anterior cruciate ligament tearing, provided by the utility model, under the action of external mechanical stress, tiny mechanical energy of knee joint flexion activity is converted into an electric signal through a Lachman test, and the electric signal is acquired and digitized by the signal conditioning unit 2 and then transmitted to the mobile terminal 3 for processing; the mobile terminal 3 can obtain the variation of the displacement of the tibia relative to the femur, and can help the medical staff to diagnose the tear of the anterior fork ligament by comparing with the normal value.

Referring to fig. 2, the wearable self-driven sensor 1 includes a cover unit 11, a rotor unit 13, a stator unit 14, a shaft 15, and a cord winding 12; the rotor unit 13 includes a rotor 131, a rotor base 133, a coil spring 132 and a rotor friction layer 134, the outer wall of the rotor 131 is fixedly connected with the inner wall of the rotor base 133 through glue, one end of the coil spring 132 is fixed on the inner wall of the rotor 131 and wound along the inner wall, the other end of the coil spring 132 is fixed on the shaft 15, and the rotor friction layer 134 is attached to the outer wall of the rotor base 133; the stator 14 unit comprises a stator 143, a flexible circuit board 142 and a stator friction layer 141, a hole 1431 is formed in the side wall of the stator 143, the flexible circuit board 142 is fixedly installed on the inner wall of the stator 143, and the stator friction layer 141 is attached to the inner wall of the flexible circuit board 142; the shaft 15 is disposed at the center of the stator 143, the rotor unit 13 is mounted on the shaft 15 through the rotor base 133, and the cover unit 11 is mounted on the rotor unit 13; the rope winding member 12 includes a fixing member fixed to the upper end of the rotor 131 and a rope wound around the fixing member and passed out through the hole 1431 of the stator 143. The rotor 131 is also provided with a hole, one end of the rope is tied and fixed, then passes through the hole on the rotor 131 and then is wound on the rotor 131, and the other end of the rope passes through the hole on the stator 143 and is fixed on the lap guard. When the rope is stretched or contracted by external mechanical stress, the rotor unit 13 converts mechanical energy into elastic potential energy of the coil spring 132 to generate an electrical signal after the external stress is applied, and the stator unit 14 transmits the generated electrical signal to the rear circuit board through the flexible electrode 142 and the lead.

Referring to fig. 3, specifically, one end of the coil spring 132 is fixed on the inner wall of the rotor 131 and is wound along the inner wall, and the other end of the coil spring 132 is fixed in the slot 151 of the shaft 15, when the rope is pulled by a pulling force, the rope drives the rotor 131 to rotate, so that the coil spring 132 is contracted, and the rotor 131 and the stator 143 generate relative displacement. The bottom surface and the side surface of the stator 143 are respectively provided with a strip hole 1432, and the two strip holes 1432 are respectively used for leading out positive and negative electric signals.

The wearable self-driven sensor 1 further comprises an adhesive tape, wherein the adhesive tape adopts a VHB nanometer double-sided adhesive tape as an adhesive film; the rotor friction layer 134 and the stator friction layer 141 are respectively attached to the outer wall of the rotor base 133 and the inner wall of the flexible circuit board 142 by the sticky tapes, the sticky tapes have different thicknesses and can be used for controlling the distance between the rotor friction layer 134 and the stator friction layer 141, and if the distance between the rotor friction layer 134 and the stator friction layer 141 is too far, an electric signal is generated too weak, so that the generated electric signal is just right when the two layers of the rotor friction layer 134 and the stator friction layer 141 are just contacted.

The rotor friction layer 134 and the stator friction layer 141 of the wearable self-driven sensor 1 are made of materials with large difference of electron affinity; the rotor friction layer 134 is a flexible circuit board, is used for manufacturing a friction layer electrode of the friction nano-generator and has a periodic grid electrode structure; the stator friction layer 141 is a cathode friction dielectric layer and is used for manufacturing a friction layer of a friction nano generator and comprises various non-conductive polymers; the friction layer material of the stator friction layer 141 is attached to the flexible circuit board 142 or the surface of the rotor friction layer 134; the flexible circuit board 142 is used for manufacturing an induction electrode of the friction nano-generator and has a periodic interdigital grid structure. The rotor friction layer 134 and the flexible circuit board 142 adopt a gold immersion process to enhance the conductivity and the wear resistance; in order to improve the wear resistance, the wearable self-driven sensor 1 is made of hard nylon 7500 for printing, a fish wire is used for the stretching wire of the rope, the inclination angle of the connecting hole of the rotor base 133 is parallel to the fish wire, and the wear resistance can reach about 50 ten thousand times.

Referring to fig. 4, the signal conditioning unit 2 includes a data acquisition module 21 and a digitization and wireless communication module 22, the data acquisition module 21 is electrically connected with the wearable self-driven sensor 1, and the digitization and wireless communication module 22 is electrically connected with the data acquisition module 21 and the mobile terminal 3 respectively; data acquisition module 21 is used for gathering the signal of telecommunication, and digitization and wireless communication module 22 are used for converting the signal of telecommunication into digital signal and pass through WIFI transmission to mobile terminal 3 with digital signal, and mobile terminal 3 handles data and feeds back a series of measurement information for check medical personnel for the supplementary front fork ligament of judging is torn or not.

The wearable knee pad unit 4 comprises a knee pad and a fixing device, the knee pad is worn on the knee, the fixing device is arranged on the knee pad, the wearable self-driven sensor 1 and the signal conditioning unit 2 are packaged in the shell and are arranged on the knee pad through the fixing device, and the knee pad can be a medical knee pad or a sports knee pad; the fixing device is made of various mounting materials, such as adhesive tape or a bracket, and is used for fixing the wearable self-driven sensor 1. The wearable self-driven sensor 1 can also be directly attached to the exposed skin of the knee joint area to be measured, and the free end of the rope is fixed through an adhesive tape.

Referring to fig. 5, specifically, during examination, the wearable self-driven sensor 1 is packaged on the knee protector, the fixing direction includes a longitudinal and transverse fixing method, the patient is in a supine position, and a physical examination technician performs a test by using a lachman test method or a front drawer method, at this time, the tibia and the femur generate relative displacement, a rope stretches, and at this time, a friction nano-generator composed of the rotor friction layer 134 and the stator friction layer 141 outputs an alternating current signal outwards; the signal of telecommunication passes through signal conditioning unit 2, gives mobile terminal 3 with information transfer through WIFI, and mobile terminal 3 is through the relative displacement of comparison and normal people to judge whether it is that the anterior fork ligament tears, and show the result and save.

All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.

The present invention has been described in considerable detail by the general description and the specific examples given above. It should be noted that it is obvious that several variations and modifications can be made to these specific embodiments without departing from the inventive concept, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A wearable anterior cruciate ligament tear auxiliary diagnosis system is characterized by comprising a wearable self-driven sensor, a signal conditioning unit, a wearable knee protection unit and a mobile terminal, wherein the wearable self-driven sensor is electrically connected with the signal conditioning unit, the signal conditioning unit is wirelessly connected with the mobile terminal, the wearable knee protection unit is worn on a knee, and the wearable self-driven sensor and the signal conditioning unit are installed on the wearable knee protection unit; the wearable self-driven sensor is used for converting the mechanical energy of the knee joint flexion activity into an electric signal; the signal conditioning unit is used for collecting and processing the electric signal and transmitting the electric signal to the mobile terminal; and the mobile terminal is used for displaying and storing the electric signal after being processed.

2. The wearable anterior cruciate ligament tear-assist diagnostic system of claim 1, comprising a cover unit, a rotor unit, a stator unit, a shaft, and a cord wrap; the rotor unit comprises a rotor, a rotor base, a coil spring and a rotor friction layer, the rotor is fixedly connected with the rotor base, one end of the coil spring is fixed on the inner wall of the rotor and wound around the inner wall of the rotor, the other end of the coil spring is fixed on the shaft, and the rotor friction layer is attached to the outer wall of the rotor base; the stator unit comprises a stator, a flexible circuit board and a stator friction layer, a hole is formed in the side wall of the stator, the flexible circuit board is fixedly installed on the inner wall of the stator, and the stator friction layer is attached to the inner wall of the flexible circuit board; the shaft is arranged in the center of the stator, the rotor unit is mounted on the shaft through the rotor base, and the cover unit is mounted on the rotor unit; the rope winding piece comprises a fixing piece and a rope, the fixing piece is fixed at the upper end of the rotor, and the rope is wound on the fixing piece and penetrates out of the hole.

3. The wearable anterior cruciate ligament tear-assist diagnostic system of claim 2, wherein the rotor friction layer is a periodic grid electrode structure.

4. The wearable anterior cruciate ligament tear assisting diagnosis system according to claim 2, wherein the flexible circuit board is a periodic interdigitated grid structure.

5. The wearable anterior cruciate ligament tear assisting diagnosis system according to claim 2, further comprising an adhesive tape, wherein the flexible circuit board and the stator friction layer are respectively mounted on the inner wall of the stator and the inner wall of the flexible circuit board through the adhesive tape.

6. The wearable anterior cruciate ligament tear assisting diagnostic system according to claim 5, wherein the adhesive tape is VHB nano double-sided tape.

7. The wearable anterior cruciate ligament tear-assist diagnostic system of claim 2, wherein the stator friction layer is a negative pole material.

8. The wearable anterior cruciate ligament tear-assisting diagnosis system according to claim 1, wherein the signal conditioning unit comprises a data acquisition module and a digitization and wireless communication module, the data acquisition module is electrically connected with the wearable self-driven sensor, and the digitization and wireless communication module is electrically connected with the data acquisition module and the mobile terminal respectively; the data acquisition module is used for acquiring the electric signal, and the digitization and wireless communication module is used for converting the electric signal into a digital signal and transmitting the digital signal to the mobile terminal.

9. The wearable anterior cruciate ligament tear-assisting diagnosis system according to claim 1, wherein the wearable knee protection unit comprises a knee pad worn on a knee and a fixing device mounted on the knee pad, the wearable self-driving sensor and the signal conditioning unit being mounted on the knee pad through the fixing device.

10. The wearable anterior cruciate ligament tear assisting diagnostic system of claim 9, wherein the knee brace is a medical knee brace or a sports knee brace.

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