CN208958087U - A kind of knee joint endoprosthesis surface damage detection system - Google Patents
A kind of knee joint endoprosthesis surface damage detection system Download PDFInfo
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- CN208958087U CN208958087U CN201820035585.4U CN201820035585U CN208958087U CN 208958087 U CN208958087 U CN 208958087U CN 201820035585 U CN201820035585 U CN 201820035585U CN 208958087 U CN208958087 U CN 208958087U
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- knee joint
- vibration
- detection system
- surface damage
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Abstract
The utility model provides a kind of knee joint endoprosthesis surface damage detection system, which includes: vibration receiving unit, and the vibration receiving unit is used for Vibration Condition when experiencing motion of knee joint to obtain vibration simulation signal；Signal processing unit, the signal processing unit are electrically connected with the vibration receiving unit, are pre-processed for receiving the vibration simulation signal, and by the vibration simulation signal；And information memory cell, the information memory cell are electrically connected with the signal processing unit, for storing pretreated signal.The knee joint endoprosthesis surface damage detection system of the utility model being capable of noninvasive, the quickly and accurately kneed damage of entry evaluation.
Description
Technical field
The utility model relates to a kind of knee joint endoprosthesis surface damage detection systems.
Background technique
Knee joint belongs to weight bearing maximum in human body and moves most joints, thus is also earliest, damage of degenerating in human body
Most joints.Knee cartilage abrasion, also known as knee joint degeneration, osteoarthritis, osteoarthropathy, degenerative joint disease,
Hypertrophic arthritis disease, hypertrophiarthritis, senescent arthritis etc. are that one of the most common type is chronic, progressivity joint disease.
Currently, mainly can check two methods using X-ray examination and MRI to assess the degree of impairment of knee cartilage.
Although it is to the earlier damage of cartilage and unwise however, the degree of impairment of indirect assessment knee cartilage is capable of in X-ray examination
Sense, and there are radiation injuries, it is difficult to the detection means as screening knee joint early stage regression.MRI inspection can be accurate
The degree of impairment of articular cartilage is assessed, but its expense is high, and generally require reservation and check, it is difficult to as screening means
Come the patient of screening knee joint early stage regression and the progress of the periodic monitoring state of an illness.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of knee joint endoprosthesis surface damage detection system, it can nothing
Wound, the quickly and accurately kneed damage of entry evaluation.
To achieve the above object, the utility model provides a kind of knee joint endoprosthesis surface damage detection system comprising: vibration
Receiving unit, the vibration receiving unit are used for Vibration Condition when experiencing motion of knee joint to obtain vibration simulation signal, institute
Stating motion of knee joint is flexion and extension or rotary motion, and the angular range of motion of knee joint is 90 degree -180 degree；Signal processing
Unit, the signal processing unit are electrically connected with the vibration receiving unit, for receiving the vibration simulation signal, and by institute
Vibration simulation signal is stated to be pre-processed；And information memory cell, the information memory cell and the signal processing unit
Electrical connection, for storing pretreated signal.
Further, the vibration receiving unit includes micro piezoelectric vibration receiver.
Further, the micro piezoelectric vibration receiver includes receiver probe and pops one's head in for fixed reception device
Probe fixing belt.
Further, the micro piezoelectric vibration receiver include for Vibration Condition when experiencing motion of knee joint with
It obtains the signal receiving module of vibration electric signal and the vibration electric signal is converted into the signal modulus of conversion group of analog signal.
Further, the signal processing unit includes: signal amplifier, and the signal amplifier is for amplifying the vibration
Dynamic analog signal；And signal filter, the signal filter is for filtering amplified vibration simulation signal.
Further, the signal filter is low-frequency filter.
Further, the signal processing unit further includes signal adapter, and the signal adapter will be for after filtering
Vibration simulation signal be converted to digital signal.
Further, the knee joint endoprosthesis surface damage detection system further includes signal analysis unit, the signal analysis
Unit is for analyzing pretreated signal to obtain vibration wave spectrogram.
Further, the signal analysis unit includes rumble spectrum signal analysis software.
Further, the information memory cell is hard disk or USB flash disk.
According to knee joint endoprosthesis surface damage detection system provided by the utility model, have the advantages that
It 1, being capable of noninvasive, quickly and accurately entry evaluation knee cartilage surface smooth degree and joint motions stabilization
Property, so as to preferably accomplish early intervention；Also it can be used as the auxiliary detection means of screening knee joint early stage disease damage.
2, to early stage knee osteoarthritis patients, using noninvasive harmless, simple and practical means, dynamic acquisition knee is closed
Vibration signal is saved, provides noninvasive, harmless, simple and practical diagnostic means for early stage generation, the development of knee joint osseous arthritis.
3, the inventor of the utility model has found under study for action: the severity and knee joint of knee joint malaise symptoms, which are shaken, composes
Wave amplitude and wave width are positively correlated, therefore, in conjunction with the dynamic change of the Radiologic imaging of pathological development, to individual subject in difference
Follow up time point vibration signal collected carries out longitudinal comparison analysis to the variation of joint vibration signal characteristics parameter, can
To characterize the rule of knee joint osseous arthritis early stage progress, moreover, for knee joint early lesion effect of conservative treatment, this reality
Noninvasive dynamic monitoring means can be provided with novel.
4, comprehensive multivariate analysis means, can combine closely the basic research of joint motions mechanics and Clinical-Imageologic Analysis,
It instructs clinical early diagnosis, detection lesion early stage to be in progress help, judges disease prognosis, it is larger to determine that rational therapy scheme has
Practical value.
5, the technical solution of the utility model can be applied on motion of knee joint protection intelligence wearing equipment, to visit
Survey the nocuity movement of Athletic Injuries In The Knee.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the knee joint endoprosthesis surface damage detection system of the utility model one embodiment；
Fig. 2 is the structural schematic diagram of the knee joint endoprosthesis surface damage detection system of another embodiment of the utility model；
Fig. 3 is the structural schematic diagram of the knee joint endoprosthesis surface damage detection system of another embodiment of the utility model.
Specific embodiment
In order to better illustrate the utility model, combined with specific embodiments below and attached drawing does further the utility model
Explanation.It is understood that these specific embodiments and drawings are illustratively, to be only used for explaining the utility model, without
It can be construed as a limitation of the present invention.
Shown in reference picture 1, Fig. 2, the utility model provides a kind of knee joint endoprosthesis surface damage detection system comprising vibration
Receiving unit 10, signal processing unit 20 and information memory cell 30.Wherein, vibration receiving unit 10 is for experiencing knee joint fortune
Vibration Condition when dynamic is to obtain vibration simulation signal；Signal processing unit 20 is electrically connected with vibration receiving unit 10, for connecing
Vibration simulation signal is received, and vibration simulation signal is pre-processed；Information memory cell 30 is electrically connected with signal processing unit 20
It connects, for storing pretreated signal.Wherein, motion of knee joint is flexion and extension or rotation (inward turning or outward turning) fortune
Dynamic, the angular range of motion of knee joint is 90 degree -180 degree, and then can obtain more comprehensive kneed degree of impairment.
When clinical research shows that knee joint is damaged, a series of inflammatory reaction can be generated, due to the inflammatory reaction
In the presence of the viscosity that will lead to articular cavity intrinsic articulation liquid changes.And the different degrees of degree of injury of knee joint corresponds to not
With the inflammatory reaction of degree, and then also correspond to the viscosity of different degrees of articular cavity intrinsic articulation liquid.Inventor is under study for action
Have been surprisingly found that, the change of articular cavity intrinsic articulation liquid viscosity will lead to the vibrational spectrum that knee joint generates during exercise frequency and
Amplitude changes, moreover, the structural damage on knee joint endoprosthesis surface or stability of joint structural damage will lead to knee joint
The frequency and amplitude for the vibrational spectrum for occurring abnormal friction during exercise, and then generating when motion of knee joint can also change,
Therefore, kneed damage can be determined by the frequency and amplitude of the vibrational spectrum generated when detection collection motion of knee joint
Degree.Movement phase when at the same time it can also be occurred according to the wave crest of vibration wave spectrogram determines the possible pars affecta of knee joint
Position.Wherein, the phase that wave crest occurs refers to that wave crest appears in which in motion of knee joint process in stage, determines motion of knee joint
Which stage other detection devices can be used in, for example, can using sync pulse jamming video camera to motion of knee joint into
Row sync pulse jamming, and then when can determine that wave crest occurs, motion of knee joint is in that stage, and then can determine that knee joint can
The damage location of energy.In turn, the inventor of the utility model proposes the knee joint endoprosthesis surface damage detection system of the utility model.
It is understood that the utility model is to vibration receiving unit 10, signal processing unit 20 and information memory cell
Connection type (be electrically connected) between 30 is not particularly limited, between each other can by it is wired and/or wirelessly into
Row connection, to realize the transmitting of signal.For example, vibration receiving unit 10, signal processing unit 20 and information memory cell 30 it
Between can be electrically connected by data line, i.e., vibration receiving unit 10, signal processing unit 20 and information memory cell 30 it
Between be connected by wire.
It is understood that the vibration receiving unit 10 of the utility model can use various common vibration reception devices
It realizes, such as various vibrating sensors etc., as long as can accurately experience the Vibration Condition of knee joint during exercise, and obtains corresponding
Vibration signal.
In some embodiments of the utility model, vibration receiving unit 10 is micro piezoelectric vibration receiver, miniature
Piezoelectric receiver utilizes the piezoelectric effect of piezo-electric crystal, has wide frequency range, dynamic range big, small in size and light-weight etc.
Advantage.Further, in some embodiments of the utility model, micro piezoelectric vibration receiver include receiver probe and
Probe fixing belt for fixed reception device probe.During use, receiver probe is tightly attached to the knee joint of subject
On the skin of facies anterior patellae, receiver probe can be fixed on subject's knee joint by fixing belt of popping one's head in, as a result, tested
In the kneed motion process of person, receiver, which is popped one's head in, can be tightly attached to always the skin surface of facies anterior patellae, and then can stablize
Vibration Condition when subject's motion of knee joint is obtained, certainly, the utility model, which is not limited to pop one's head in receiver, is tightly attached to kneecap
Receiver can also be popped one's head in and be fixed on shin bone and femur side etc., obstructed between bone face and skin without muscle by front, and soft tissue is thick
Relatively thin place is spent, Vibration Condition when obtaining subject's motion of knee joint can also be stablized.
Further, micro piezoelectric vibration receiver may include for Vibration Condition when experiencing motion of knee joint with
It obtains the signal receiving module of vibration electric signal and the vibration electric signal is converted into the signal modulus of conversion group of analog signal.It can
With understanding, the signal receiving module of micro piezoelectric vibration receiver and the structure and working principle of signal modulus of conversion group are
Well known to those of ordinary skill in the art, therefore, the utility model no longer repeats this.
In the knee joint endoprosthesis surface damage detection system of the utility model, signal processing unit 20 connects for receiving signal
The vibration simulation signal that unit 10 transmits is received, and the vibration simulation signal is pre-processed.In some realities of the utility model
It applies in example, as shown in Fig. 2, signal processing unit 20 includes: signal amplifier 22 and signal filter 24.Signal amplifier 22 is used
In the vibration simulation signal that receives of amplification, in favor of vibration simulation signal differentiation, inspect and record.Signal filter 24 is used
In filtering amplified vibration simulation signal, to avoid miscellaneous letter in sampling process caused by interfere.That is, in this embodiment,
Signal processing unit 20 mainly first amplifies processing to vibration simulation signal to the pretreatment that vibration simulation signal carries out, then
To after amplification to vibration simulation signal be filtered processing.It is understood that can also first be carried out to vibration simulation signal
Filtration treatment, then to after filtering to vibration simulation signal amplify processing.
It is understood that existing various common signal amplifiers (such as signal gain device) and signal mistake can be used
Filter, it is not specifically limited to this for the utility model.Preferably, in one embodiment of the utility model, signal filter
24 use low-frequency filter, to filter amplified vibration simulation signal, the miscellaneous letter of high frequency are avoided to interfere in sampling process
Effect.It is those of ordinary skill in the art for the specific structure and working principle of signal amplifier 22 and signal filter 24
Known, the utility model no longer repeats this.
Certainly, signal processing unit 20 can also carry out other pretreatments to vibration simulation signal, for example, such as Fig. 3 institute
Show, in one embodiment of the utility model, signal processing unit 20 further includes signal adapter 26, and signal adapter 26 can
Filtered vibration simulation signal is converted to digital signal.It is understood that can be turned using various common signals
Parallel operation, it is not specifically limited to this for the utility model, as long as vibration simulation signal can be converted to digital signal by it, such as
Analog and digital signal converter.Likewise, the specific structure and working principle for signal adapter 26 are the common skill in this field
Well known to art personnel, the utility model repeats no more this.
It is understood that can be by above-mentioned signal amplifier 22, signal filter 24 and signal adapter 26 can be with
For three independent components, can also be integrated in together, it is not specifically limited to this for the utility model.
Information memory cell 30 in knee joint endoprosthesis surface damage detection system provided by the utility model is mainly used for depositing
Pretreated signal is stored up, it is understood, therefore, that the information memory cell 30 of the utility model can be using various common
Storage medium, the utility model is not particularly limited, such as hard disk or USB flash disk etc..It can also be appreciated that can be using each
Pretreated signal is stored in hard disk by the common storage mode of kind, for example, being stored in hard disk directly in the form of archives, just
In the later period inspect and analysis processing.
Further, in some embodiments, knee joint endoprosthesis surface damage detection system provided by the utility model may be used also
To include signal analysis unit (not shown), to analyze pretreated signal to obtain vibration wave spectrogram.It is understood that
, can using signal analysis method commonly used in the art to pretreatment (such as enhanced processing, filtration treatment, at analog-to-digital conversion
Reason etc.) after signal analyzed, to obtain vibration wave spectrogram, the utility model is not particularly limited this.For example, at this
In some embodiments of utility model, which includes rumble spectrum signal analysis software, the rumble spectrum signal
Analysis software can analyze the signal after pretreatment (such as enhanced processing, filtration treatment, analog-to-digital conversion process), in turn
Obtain vibration wave spectrogram when knee joint vibration.
(such as amplify, filter, conversion) by pretreatment it is understood that signal analysis unit is mainly used for analysis
The digital signal obtained afterwards, to obtain the wave spectrogram of knee joint vibration.The signal analysis unit can be set in signal processing
Between unit 20 and information memory cell 30, at this point, the digital signal obtained after pretreatment first passes through analysis, knee pass is obtained
After the wave spectrogram for saving vibration, which is stored in the information memory cell 30.
Certainly, which also can be set after information memory cell 30, i.e., deposits at this point, being stored in information
Information in storage unit 30 is the digital signal obtained after pretreatment, and signal analysis unit is read from information storage unit 30
After taking corresponding digital signal to be analyzed, the wave spectrogram of knee joint vibration is obtained.
That is, analytical procedure can be completed before storing, then vibration wave spectrogram is stored in hard disk；It can also deposit
It is completed after storage, at this point, the signal analysis unit can be the devices such as extraneous computer terminal, vibration frequency is stored in the computer
Spectrum signal analyzes software.
The utility model is to use micro piezoelectric vibration receiver as vibration receiving unit 10, information process unit 20
Including signal amplifier, low frequency filter and analog and digital signal converter, signal analysis unit are arranged in information memory cell
Pass through after 30, and between vibration receiving unit 10, signal processing unit 20, information memory cell 30 and storage unit
For data line connection, the course of work of the knee joint endoprosthesis surface damage detection system of the utility model is described in detail.
It is closed firstly, the receiver probe of micro piezoelectric vibration receiver is fixed on subject's knee by probe fixing belt
The skin surface in front of kneecap is saved, it is made to be tightly attached to skin surface in front of knee joint kneecap, the knee joint of subject bends and stretches work
Dynamic (by taking flexion and extension as an example) (certainly, subject or the measured can just be seated on chair and measure, can also be in knee joint
Daily routines or while being moved, measure), it is being bent at this point, micro piezoelectric vibration receiver experiences subject's knee joint
The vibration simulation signal of knee joint during exercise is obtained after Vibration Condition when stretching movement, and the vibration simulation signal is passed through into number
Send the signal amplifier of information process unit 20 to according to line, signal amplifier amplifies the vibration simulation signal, with benefit
In signal differentiation, inspect and record, then send amplified analog signal to low frequency filter, low-frequency filter is to it
It is filtered, interferes effect in sampling process to avoid the miscellaneous letter of high frequency, then send filtered analog signal to
Analog and digital signal converter, analog and digital signal converter is converted into after data-signal to be stored in firmly directly in the form of archives
In disk.It is subsequent need to inspect data and analyzed when, the information that stores in hard disk is read by computer terminal, in computer
Rumble spectrum signal analysis software analyze it processing, to obtain vibration wave spectrogram when motion of knee joint, in turn,
It can analyze the kneed degree of injury for obtaining subject according to obtained vibration wave spectrogram (such as frequency and amplitude).
It is understood that knee joint endoprosthesis surface damage detection system provided by the utility model and detection method can be examined
Kneed various degree of impairment are surveyed, for example, cartilage damage, patellar tract is bad, meniscus injury, ligament injury etc..It can be with
Understand, the exception of knee joint rumble spectrum is a kind of reaction of comprehensive condition, wherein may including the damage of various structures
Hurt problem, can clinically integrate other means, determines which kneed specific position is damaged.
According to knee joint endoprosthesis surface damage detection system provided by the utility model, pass through the knee joint of acquisition subject
Vibration Condition during the motion obtains the vibration wave spectrogram generated when motion of knee joint, and then analyzes obtained vibration wave
The qualitative comparison in transverse direction may be implemented in spectrogram, to determine whether the kneed situation of subject is abnormal；It is also possible to real
Whether existing longitudinal quantitative comparison, aggravated the case where subject's knee joint endoprosthesis surface damage with determining.
For example, the medical departments such as hospital or inspection center can pass through the big number of network for the qualitative comparison in transverse direction
According to system, vibration wave spectrogram (the i.e. knee joint vibration of normal population that the knee joint of a large amount of normal populations generates during exercise is collected
Dynamic wave spectrogram), it is stored in the database of medical department.The knee joint vibration wave of subject is obtained after subject detects
Spectrogram is compared, it will be appreciated that subject's knee joint by the knee joint vibration wave spectrogram with the normal population in database
The case where it is whether abnormal, and then quickly and accurately whether get damaged for entry evaluation knee joint, thus to early stage knee joint regression
Venereal disease, which becomes, carries out tentative diagnosis, preferably accomplishes early intervention.For longitudinal quantitative comparison, closed when subject is diagnosed as knee
For section when being damaged, subject can carry out repeated detection during treat knee joint endoprosthesis surface damage, by comparing by
Whether the knee joint vibration wave spectrogram of examination person's different times can be added with the knee joint endoprosthesis surface damage situation of auxiliary judgment subject
Weight improves.
Although having done illustrative description to the utility model above, those skilled in the art can be managed
Solution: in the case where not departing from the principles of the present invention and objective, a variety of to the progress of these embodiments can change, modify,
Replacement and variant, the scope of the utility model are defined by the claims and their equivalents.
Claims (10)
1. a kind of knee joint endoprosthesis surface damage detection system characterized by comprising
Receiving unit is vibrated, the vibration receiving unit is used for Vibration Condition when experiencing motion of knee joint to obtain vibration simulation
Signal, the motion of knee joint are flexion and extension or rotary motion, and the angular range of motion of knee joint is 90 degree -180 degree；
Signal processing unit, the signal processing unit is electrically connected with the vibration receiving unit, for receiving the vibration mould
Quasi- signal, and the vibration simulation signal is pre-processed；And
Information memory cell, the information memory cell is electrically connected with the signal processing unit, pretreated for storing
Signal.
2. knee joint endoprosthesis surface damage detection system as described in claim 1, which is characterized in that the vibration receiving unit packet
Include micro piezoelectric vibration receiver.
3. knee joint endoprosthesis surface damage detection system as claimed in claim 2, which is characterized in that the micro piezoelectric vibration
Receiver includes receiver probe and the probe fixing belt for fixed reception device probe.
4. knee joint endoprosthesis surface damage detection system as claimed in claim 2, which is characterized in that the micro piezoelectric vibration
Vibration Condition when receiver includes for experiencing motion of knee joint is to obtain the signal receiving module of vibration electric signal and by institute
State the signal modulus of conversion group that vibration electric signal is converted into analog signal.
5. the knee joint endoprosthesis surface damage detection system as described in claim 1-4 is any, which is characterized in that the signal processing
Unit includes:
Signal amplifier, the signal amplifier is for amplifying the vibration simulation signal；And
Signal filter, the signal filter is for filtering amplified vibration simulation signal.
6. knee joint endoprosthesis surface damage detection system as claimed in claim 5, which is characterized in that the signal filter is low
Frequency filter.
7. knee joint endoprosthesis surface damage detection system as claimed in claim 5, which is characterized in that the signal processing unit is also
Including signal adapter, the signal adapter is used to filtered vibration simulation signal being converted to digital signal.
8. knee joint endoprosthesis surface damage detection system as described in claim 1, which is characterized in that the knee joint endoprosthesis face damage
Triage examining system further includes signal analysis unit, and the signal analysis unit is for analyzing pretreated signal to be vibrated
Wave spectrogram.
9. knee joint endoprosthesis surface damage detection system as claimed in claim 8, which is characterized in that the signal analysis unit packet
Include rumble spectrum signal analysis software.
10. knee joint endoprosthesis surface damage detection system as described in claim 1, which is characterized in that the information memory cell
For hard disk or USB flash disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820035585.4U CN208958087U (en) | 2018-01-10 | 2018-01-10 | A kind of knee joint endoprosthesis surface damage detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820035585.4U CN208958087U (en) | 2018-01-10 | 2018-01-10 | A kind of knee joint endoprosthesis surface damage detection system |
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| Publication Number | Publication Date |
|---|---|
| CN208958087U true CN208958087U (en) | 2019-06-11 |
Family
ID=66746450
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820035585.4U Expired - Fee Related CN208958087U (en) | 2018-01-10 | 2018-01-10 | A kind of knee joint endoprosthesis surface damage detection system |
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| Country | Link |
|---|---|
| CN (1) | CN208958087U (en) |
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2018
- 2018-01-10 CN CN201820035585.4U patent/CN208958087U/en not_active Expired - Fee Related
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Granted publication date: 20190611 Termination date: 20200110 |