CN100411596C - Bi-directional digital wireless pressure monitoring system for biology implantation joint - Google Patents
Bi-directional digital wireless pressure monitoring system for biology implantation joint Download PDFInfo
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- CN100411596C CN100411596C CNB2005101306299A CN200510130629A CN100411596C CN 100411596 C CN100411596 C CN 100411596C CN B2005101306299 A CNB2005101306299 A CN B2005101306299A CN 200510130629 A CN200510130629 A CN 200510130629A CN 100411596 C CN100411596 C CN 100411596C
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Abstract
The present invention discloses a bidirectional digital wireless pressure monitoring system for an organism implantation joint, which relates to the design of a low consumption circuit, the design of a piezoelectric ceramic intermittent electricity supply circuit, and the design of a data wireless transmission circuit. The present invention belongs to the technical field of a pressure monitoring system for a medical implantation joint. The system comprises in vivo parts of a piezoelectric ceramic device, an energy storage device, a module mixing chip and an antenna, and in vitro parts of an in vitro sending and receiving wireless data transmission device and a computer control and processing device. The system has three working modes of the combined working mode of the piezoelectric ceramic device, the energy storage device and the module mixing chip, the combined working mode of the module mixing chip, the antenna, the in vitro sending and receiving wireless data transmission device and the computer control and processing device, and a system sleep mode. The working condition of an organism implantation joint is early detected by the present invention. The present invention has low power consumption. The in vivo and in vitro communication of the organism implantation joint is realized for the first time, and an in vitro computer can obtain pressure data in a wireless mode to rationally diagnose the organism implantation joint.
Description
Technical field
The present invention relates to a kind of bi-directional digital wireless pressure monitoring system for biology implantation joint, relate in particular to low consumption circuit design, piezoelectric ceramics intermittent power supply circuit design and the design of data wireless transmission circuit, belong to medical embedded joint pressure monitoring system technical field.
Background technology
The limbs permanent disability is one of important diseases that influences people with disability quality of life, and artificial joint and artifucial limb are the important means that rebulids motion function for the people of joint injury.Behind the artificial joint implant into body, be under the long-term work state, adopt integrated circuit technique between the human body implantation joint and the external world, to set up the physical channel of a signal transmission, situations such as the working condition of implantation joint, pressure, dislocation are carried out earlier detection, are effective means that reduces patient's misery.
The domestic research of relevant human synovial at present mainly concentrates on picking up of the emulation of visual human's arm of joint of robot control system, jointization and modeling, mechanical hand and puts and keep away joint judgement motion algorithm in control, mechanical arm and the robot that barrier moves.Microelectric technique is applied in human body implant system aspect, and the Institute of Microelectronics of Tsinghua Univertity independent development has also been developed the artificial cochlea who solves deaf person's audition, the chips such as gastric sight glass that are used to survey gastrointestinal problems, and relevant nerve electrode Study on Technology.Abroad, it is a lot of that organism is implanted into the systematic research kind, and these systems mainly comprise: all kinds of implanted measuring systems, implanted stimulator, implanted medication (control) device, implanted artificial organ and auxiliary device.U.S. Nebraska-Lincoln university machinery ties up to the application that the research piezoelectric ceramics produces low-frequency electrical energy, has mentioned the piezo ceramic device of packing into and can be circuit supply in the human body implantation joint, and simple model is provided.But this model is only limited to the experimental stage, do not consider actual application environment, a lot of parameters are not set according to practical situation, and have following three problems: be the functional application of experimental situation 1,, but do not have to consider low-power consumption, low-voltage and the low noise circuit design of practical application; 2, do not consider the design of extracorporeal circuit, promptly how to be transferred to the intraarticular data wireless external; 3, lack the design of power circuit.These problems will be resolved in this problem.
Also do not see at present the research that utilizes microelectric technique that implantation joint is detected.The present invention can be applied in the implantation joint that can give piezoelectric ceramic device pressure in the implantation joint in daily life, as human body knee joint, hip joint etc.,
Summary of the invention
The object of the present invention is to provide a kind of two-way wireless communication, controlled and bi-directional digital formula wireless pressure monitoring system and its implementation that can handle and store artificial joint pressure data in the organism in real time.
The wireless implantation joint pressure monitoring system of bi-directional digital formula of the present invention, it is a kind of two-way wireless communication, controlled and can handle and store the bi-directional digital formula wireless pressure monitoring system that organism is implanted into the joint pressure data in real time, it is characterized in that this system is by comprising that two of vivo and vitros part forms:
(1) part in the body:
(1) piezoelectric ceramic device comprises 3 piezo ceramic elements, and they are that the sensor transmissions pressure data again can be in produce power under the pressure; Three outfans of piezoelectric ceramic device link to each other with the input of following modulus hybrid chip and the input of energy storing device respectively;
(2) energy storing device comprises rectification circuit, energy storage circuit, and the electric current of three outfan outputs of piezoelectric ceramic device is through giving energy storage circuit behind the rectification circuit, and energy storing device is the power supply of modulus hybrid chip, and its powering mode is step; The outfan of energy storing device connects the power input of modulus hybrid chip;
(3) modulus hybrid chip, its function is that pressure data is stored in the non-volatile memory cells through handling, and can the data in the non-volatile memory cells be spread out of externally by radio-frequency module, simultaneously whether its also is responsible for detecting piezo ceramic element and is worn through and carries out the management of power circuit; Chip adopt the software of Synopsys company and Cadence company carry out respectively numerical portion and simulation part design, comprehensive, emulation, do domain, final flow forms.The design of chip power circuit has overcome the shortcoming that model that background technology partly mentions lacks this design.
(4) wireless transmitter in the internal antenna, internal antenna and modulus hybrid chip links together;
(2) the outer body outer body is mainly signal reception and blood processor, comprising:
(1) external antenna, external antenna links to each other with external transmitting/receiving wireless data transmission device;
(2) external transmitting/receiving wireless data transmission device is formed by radio circuit and the series connection of high capacity memory element, and radio circuit is by the software design of Cadence company; This device is used for emitting radio frequency signal and receive data in the transmission body; It links to each other with blood processor with computer control;
(3) computer control and blood processor are made up of monitor, main frame and the wireless data transceiving card that links to each other with main frame, and this part is used for handling the ex vivo partial data, for doctor's analyzing and diagnosing.
The working method of the wireless implantation joint pressure monitoring system of bi-directional digital formula of the present invention is characterized in that: it comes work according to any in following three kinds of working methods:
1) piezoelectric ceramic device, energy storing device and modulus hybrid chip associated working mode.Occur in patient's daily life in this working method, when patient's motion makes the piezoelectric ceramics pressurized, piezoelectric ceramics can produce power, these energy can be stored in the energy storage circuit and be the power supply of modulus hybrid chip, and the voltage adjuster in the modulus hybrid chip is chip required voltage electric current and energy supply with these power conversion.The sector-meeting of modulus mixed core is handled and is stored in the non-volatile memory cells from the pressure data of pick off and with it.This working method does not influence patient's daily life.
2) modulus hybrid chip, antenna, external transmitting/receiving wireless data transmission device and computer control and blood processor associated working mode.When this mode occurs in the doctor for patient's inquiring, the doctor utilizes external transmitting/receiving wireless data transmission device that radiofrequency signal is sent to intravital modulus hybrid chip, the modulus hybrid chip is obtained energy and is started working from radiofrequency signal, the data that are stored in the non-volatile memory cells are sent to inside and outside wireless receiving and dispatching data transmission device, be transferred to computer through the wireless data transceiving card.
3) system hibernates pattern.This working method occurs in the situation beyond two kinds of working conditions recited above, has not promptly both had pressure to give piezoelectric ceramic device, is not again the inquiring time.At this moment, system does not have energy to produce, and is in off-position.
The invention effect:
1) system can carry out earlier detection for the working condition of biology implantation joint, comprise in vivo ability to work of implantation joint (as walking), unusual asymmetric pressure, abnormal pressure, loosening and angular error etc., system can alleviate patient's misery as early as possible for the real time monitoring data that the doctor provides implantation joint pressure.System has three kinds of different working methods.First kind is piezoelectric ceramic device, energy storing device and modulus hybrid chip associated working mode.This mode is meant patient in daily life, and implantation joint can produce pressure when proper motion, and system can gather pressure data and handle and store under the piezoelectric ceramics electric power thus supplied.This working method does not influence patient's daily life.Second kind is modulus hybrid chip, antenna, external transmitting/receiving wireless data transmission device and computer control and blood processor associated working mode.This working method occurs in the doctor under the situation of patient's inquiring, by the inside and outside radio-frequency unit, for the data in the non-volatile memory cells in the body are obtained in the power supply of body internal circuit simultaneously.And the wireless data transceiving card by being connected with computer, data can be transferred on the computer and diagnose for the doctor.The third is the system hibernates pattern, and when this mode of operation was meant patient implantation joint does not move in daily life, this moment, piezoelectric ceramics did not have the pressurized can produce power yet, and all circuit are in power-down state, system hibernates.
2) design of outer body of the present invention has overcome the shortcoming that the model of mentioning is not considered the extracorporeal circuit design in the background technology part.In addition, the whole system design is an aim with low-power consumption, low-voltage and low noise, about 1 volt, modulus voltage is isolated, thereby has reduced system power dissipation with the system works Control of Voltage, reduce system noise, remedied the model shortcoming of in the background technology part, mentioning.
3) realize in the biology implantation joint first and the communication between external, make external calculating function obtain pressure data implantation joint is rationally diagnosed by wireless mode.
4) can carry out comprehensive data acquisition to biology implantation joint pressure, can effectively detect problems such as in vivo ability to work of implantation joint (as walking), unusual asymmetric pressure, abnormal pressure, loosening and angular error by these pressure datas.
5) system has two kinds of power supply modes, and under first kind of above-mentioned mode of operation, system is by the piezo ceramic device intermittent power supply, and under second kind of above-mentioned mode of operation, system powers by radiofrequency signal.
6) the implantation joint pressure data is reduced to the simple feature data through certain algorithm, has reduced the size of non-volatile memory cells.
Description of drawings
Fig. 1 is the population structure sketch map of part in the body of the present invention.
Fig. 2 is the structural representation of outer body of the present invention.
The sketch map of the piezo ceramic element that Fig. 3 uses for the present invention.
Fig. 4 is the circuit theory sketch map of the radio-frequency module of wireless data transceiving transmitting device in the body of the present invention.
Fig. 5 is the structural representation of piezoelectric ceramics signal processing of the present invention.
Fig. 6 is the circuit theory sketch map of modulus hybrid chip of the present invention.
Fig. 7 is a working state of system sketch map of the present invention.
The specific embodiment
It is controlled and can preserve pressure data, digital biology implantation joint pressure monitoring system in real time to the present invention proposes a kind of two-way wireless communication.System adopts the blended design of modulus, is made up of piezoelectric ceramic device, energy storing device, modulus hybrid chip, antenna, external transmitting/receiving wireless data transmission device and computer control and blood processor six parts.Piezo ceramic device is the sensor transmissions pressure signal, can be other circuit supply in produce power under the pressure again, and these equipment are placed in the implantation joint.These pressure signals enter analog to digital conversion circuit through amplifier, wave filter and the multiplexer in modulus hybrid chip, obtain characteristic by the algorithm process of control unit again and are saved in the non-volatile memory cells.Chip also is placed in the implantation joint, and its encapsulating housing adopts the compatible material of macromolecule to make.Control unit in the chip also carries out power management and entire circuit logic control.Chip one end links to each other with piezo ceramic device, and the other end connects antenna, and the chip outside antenna can be realized the data communication of inside and outside around chip.Radio circuit part and antenna, external radio receiving transmitting module are finished the transfer function of data jointly in the body.
Part has two kinds of power supply modes in the body: the one, and the piezoelectric ceramics power supply; The 2nd, the radiofrequency signal power supply.Wherein the piezoelectric ceramics power supply mode is step.Enter energy storage capacitor after the energy process full-wave bridge rectification that piezoelectric ceramics produces under pressure, characteristic according to electric capacity, the energy shortage that produces when piezoelectric ceramics is during for loaded work piece, these energy are the memory capacitance charging, when the energy in the memory capacitance was enough to for loaded work piece, memory capacitance was in discharge condition.Come the electric current of self-capacitance to obtain stable electric current through the energy commutator.The radiofrequency signal power supply is meant that under the inquiring situation extracorporeal circuit sends radiofrequency signal, and the body internal circuit obtains energy and is able to work from radiofrequency signal.External wireless receiving and dispatching data transmission device comprises an antenna receiving array, receives the pressure data that ex vivo sends, and sends to computer control and blood processor.In computer control and the blood processor, wireless data transceiving card that links to each other with main frame and dual-mode antenna come with body in wireless transmitter realize bidirectional data communication, can on monitor, observe the pressure data of patient's implantation joint simultaneously in real time.Main frame can carry out the auxiliary doctor of date processing and diagnose.When concrete execution implantation joint was checked, patient was sitting on the chair, and at the implantation joint places of aiming at patients at a distance of about 20 centimetres, through about 1 minute irradiation, transfer of data got final product in computer the doctor in the body with external transceiver.Whole operation is simple, and patient does not have any discomfort and misery.
System has three kinds of different working methods.First kind is piezoelectric ceramic device, energy storing device and modulus hybrid chip associated working mode.Be meant patient in daily life in this mode, implantation joint can produce pressure when proper motion, and system can gather pressure data and handle and store under the piezoelectric ceramics electric power thus supplied.This working method does not influence patient's daily life.Second kind is modulus hybrid chip, antenna, external transmitting/receiving wireless data transmission device and computer control and blood processor associated working mode, this working method occurs in the doctor under the situation of patient's inquiring, by the inside and outside radio-frequency unit, for the data in the non-volatile memory cells in the body are obtained in the power supply of body internal circuit simultaneously.Because system comprises a wireless data transmitter that is connected with computer, and have one with the external wireless transmitter that calculates the function real-time Communication for Power.So data can be transferred on the computer and diagnose for the doctor in the body.The third is the system hibernates mode, and when this working method was meant patient implantation joint does not move in daily life, this moment, piezoelectric ceramics did not have the pressurized can produce power yet, and all circuit are in power-down state, system hibernates.
Fig. 1 is the population structure sketch map of part in the body of the present invention.Wherein 1 is piezo ceramic device, and 2 is energy storing device, and 3 is the modulus hybrid chip, and 4 is antenna.Piezo ceramic device is the sensor transmissions pressure signal, can be other circuit supply in produce power under the pressure again, and these equipment are placed in the implantation joint.The modulus hybrid chip is stored in pressure data in the non-volatile memory cells through handling, and can the data in the non-volatile memory cells be spread out of externally by radio-frequency module, and whether its also is responsible for detecting piezo ceramic element and is worn through simultaneously.The modulus hybrid chip is the same with piezo ceramic element to be placed in the implantation joint.The chip encapsulating housing adopts the compatible material of macromolecule to make, and chip one end links to each other with piezo ceramic device, and the other end connects antenna, and the chip outside antenna can be placed around chip.
Fig. 2 is the structural representation of outer body of the present invention, and wherein 5 is wireless transmitter, and 6 are computer control and blood processor.When inquiring, outer body is started working, and wireless transmitter sends radio-frequency module in the radiofrequency signal donor, and receives the interior data of body to computer control and blood processor.
The sketch map of the piezo ceramic element that Fig. 3 uses for the present invention, wherein 7 is pressure dispersed metal plate, and 8 is bearing, and 9 is piezo ceramic element, has comprised 3 piezo ceramic elements among this figure.
Fig. 4 is the schematic block circuit diagram of radio-frequency module of the present invention.Wherein 401 is that modulating equipment, 402 is that RF (RadioFrequency) limiter, 403 is that cymoscope, 404 is that adjustor, 405 is that agitator, 406 is that demodulator, 407 is that clock generator, 408 is that current biasing circuit, 409 is that manipulator, 410 is the reset signal generative circuit; P1 and the interface of P2 for linking to each other with antenna; S1 is that clock signal, S2 are that data signal, S3 are reset signal.S1, S2 and S3 are output signal.The input of the output of modulating equipment (401) and RF limiter (402) and the input of adjustor (404) link to each other, the output of RF limiter (402) links to each other with the input of cymoscope (403) and demodulator (405), the output of cymoscope (403) and demodulator (405) links to each other with the input of adjustor (404) with clock generator (407) respectively, and the output of adjustor (404) is connected respectively to the input of agitator (405), current biasing circuit (408) and reset signal generative circuit (410).
Fig. 5 is the structural representation of sensor signal processing procedure of the present invention.S4～S6 is the signal from three piezoceramic transducers, and 502 is switch, realizes the time division multiplex of three road signals, and 503 is power amplifier, and 504 is low pass filter.S7 is the simulated pressure signal through multiplexing and filtering.The pressure signal that piezoceramic transducer obtains enters analog to digital conversion circuit again through multiplexing amplifier and the wave filter of entering, and obtains the digital signal of pressure.
Fig. 6 is the schematic block circuit diagram of modulus hybrid chip of the present invention.Wherein 601 is the sensing switch testing circuit, and whether be used for detecting piezo ceramic element worn out; 602 are the control unit of low-power consumption, be responsible for the processing pressure data and data are saved in the non-volatile memory cells; 603 is non-volatile memory cells; 604 are data modulation and error detection module; 605 is sensor interface; 606 is the sensor signal processing module, comprises multiplex circuit, power amplifier and filter circuit; 607 is analog-digital converter; 608 is wireless transmitter; 609 is voltage adjuster; 610 is electric power management circuit; 611 is that radio-frequency (RF) energy adjustor 612 is radio frequency signal processing circuit.The input of sensing switch testing circuit (601) respectively and the outfan of the outfan of piezoelectric ceramic device (1) and control unit (602).The outfan of control unit (602) also links to each other with the input of non-volatile memory cells (603), modulation of non-volatile memory cells (603) and data and two-way linking to each other of error detection module (604), data modulate and error detection module (604) again with two-way linking to each other of wireless transmitter (608).The input of sensor interface (5) links to each other with the outfan of piezoelectric ceramic device (1), the outfan of sensor interface (5) links to each other with the input of sensor signal processing module (606), and the outfan of sensor signal processing module (606) links to each other with the input of analog-digital converter (607).The outfan of analog-digital converter (607) links to each other with the input of control unit (602).The input of voltage adjuster (609) links to each other with the outfan of energy storing device (2), and its outfan links to each other with the input of electric power management circuit (610).The outfan of radio-frequency (RF) energy adjustor (611) also links to each other with the input of electric power management circuit (610), and its input links to each other with the outfan of radio frequency signal processing circuit (612).Wireless transmitter (608) and radio frequency signal processing circuit (612) all with two-way linking to each other of antenna (4).
Fig. 7 is a working state of system machine sketch map of the present invention.Wherein State0 is the system hibernates pattern, and State1 is the inquiring state, and State2 is the daily animation of patient.Co1: the voltage that radio circuit supply voltage and piezo ceramic device produce is all less than system works voltage; Co2: the radio circuit supply voltage equals the voltage of system works voltage and piezo ceramic device generation less than system works voltage; Co3: the radio circuit supply voltage is less than the system works voltages such as voltage of system works voltage and piezo ceramic device generation
Piezoelectric ceramic device (1) comprises 3 piezo ceramic elements (9), pressure dispersed metal plate (7) and bearing (8), and piezo ceramic element (9) is that the sensor transmissions pressure data again can be in produce power under the pressure.Patient in daily life, implantation joint can produce pressure when proper motion, pressure is converted into electric energy by piezoelectric ceramic device (1) and exports to energy storing device (2), energy storing device (2) makes its work for modulus hybrid chip (3) power supply, and modulus hybrid chip (3) is gathered pressure data and handled and store under piezoelectric ceramic device (1) electric power thus supplied.(S4～S6) enter sensor signal processing module (606) through sensor interface (605) (comprises switch (502) from the signal of three piezoceramic transducers, realize the time division multiplex of three road signals, power amplifier (503) amplifies small-signal and low pass filter (504)) obtain simulated pressure signal (S7) through multiplexing and filtering, simulated pressure signal (S7) enters the digital signal that analog-digital converter (607) obtains pressure again.The control unit of low-power consumption (602) is saved in non-volatile memory cells (603) according to certain algorithm process pressure data and with data.Whether simultaneously, sensing switch testing circuit (601) detects piezo ceramic element worn out.
When the doctor is patient's inquiring, by radio-frequency unit in the body is radio frequency signal processing circuit (612), external radio-frequency device (5) and inside and outside antenna (4), for the data of non-volatile memory cells (603) lining in the body are obtained in modulus hybrid chip (3) power supply simultaneously.And the wireless data transceiving card by being connected with computer (6), pressure data can be transferred on the computer and diagnose for the doctor.In the case, data modulation and error detection module (604) are modulated and wrong detection the data of communication.Wireless transmitter (608) is an internal antenna.The voltage that voltage adjuster (609) adjusting radiofrequency signal produces makes it to meet the running voltage of modulus hybrid chip (3), and radio-frequency (RF) energy adjustor (611) is adjusted radio frequency energy and made it to be enough to produce the running voltage that meets modulus hybrid chip (3).The power supply that power supply that electric power management circuit (610) management piezo ceramic device (1) produces and radiofrequency signal produce, make them not provide power supply for modulus hybrid chip (3) with conflicting, judge the duty of their size decision modulus hybrid chip (3) simultaneously.Modulus hybrid chip (3) has three kinds of duties: dormant state (State0), inquiring state (State1) and the daily animation of patient (State2), the voltage that produces when radio circuit supply voltage and piezo ceramic device is during all less than system works voltage (co1), and modulus hybrid chip (3) enters dormant state (State0); When the radio circuit supply voltage equaled voltage that system works voltage and piezo ceramic device produce less than system works voltage (co2), modulus hybrid chip (3) entered inquiring state (State1); When system works voltages (co3) such as voltage that the radio circuit supply voltage produces less than system works voltage and piezo ceramic device, modulus hybrid chip (3) enters the daily animation of patient (State2).
Described radio frequency signal processing circuit (612) comprises as the lower part: signal enters into modulating equipment (401) from the interface (P1 and P2) that links to each other with antenna (4) and accepts modulation, enter RF limiter (402) simultaneously from the signal of interface (P1) and accept to adjust and make it energy and meet system requirements, entering cymoscope (403) and demodulator (406) respectively through adjusted signal becomes to descend pulse square wave to enter adjustor (404) to accept the waveform adjustment.Clock generator (407) supplies digital circuit work and clock signal (S1) according to the signal extraction clock after the demodulation.Current biasing circuit (408) provides current offset for radio frequency signal processing circuit (612).Agitator (405) generates high frequency clock for memory element work.Manipulator (409) modulation is from the signal and the outputting data signals (S2) of modulating equipment (401).Reset signal generative circuit (410) produces reset signal S3.
Thus, system has realized goal of the invention.
Claims (1)
1. the wireless implantation joint pressure monitoring system of bi-directional digital formula is characterized in that, this system is by comprising that two of vivo and vitros part forms:
(1) body comprises inner the branch:
(1) piezoelectric ceramic device comprises 3 piezo ceramic elements, and they are that the sensor transmissions pressure data can produce electric energy output again under pressure; Three outfans of piezoelectric ceramic device link to each other with the input of following modulus hybrid chip and the input of energy storing device respectively;
(2) energy storing device comprises rectification circuit, energy storage circuit; The electric current of three outfan outputs of piezoelectric ceramic device is through giving energy storage circuit behind the rectification circuit, energy storing device is the power supply of modulus hybrid chip; The outfan of energy storing device connects the power input of modulus hybrid chip;
(3) modulus hybrid chip, comprise non-volatile memory cells, radio-frequency module and wireless transmitter, its function is that the pressure data that implantation joint produces when patient's daily exercise is stored in the non-volatile memory cells through handling, and can the data in the non-volatile memory cells be spread out of externally by radio-frequency module, simultaneously whether its also is responsible for detecting piezo ceramic element and is worn through and carries out the management of power circuit;
(4) wireless transmitter in the internal antenna, internal antenna and modulus hybrid chip links together;
(2) outer body comprises:
(1) external antenna, external antenna links to each other with external transmitting/receiving wireless data transmission device;
(2) external transmitting/receiving wireless data transmission device is formed by the series connection of radio circuit and high capacity memory element, is used for emitting radio frequency signal and receive data in the transmission body; It links to each other with blood processor with computer control;
(3) computer control and blood processor link to each other with external transmitting/receiving wireless data transmission device, and this part is used for handling the ex vivo partial data, for doctor's analyzing and diagnosing.
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| CNB2005101306299A CN100411596C (en) | 2005-12-16 | 2005-12-16 | Bi-directional digital wireless pressure monitoring system for biology implantation joint |
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| CN101427923B (en) * | 2007-11-05 | 2010-11-24 | 昆山双桥传感器测控技术有限公司 | Biological medical pressure sensor |
| PT3013283T (en) * | 2013-06-23 | 2021-03-11 | Canary Medical Inc | Devices, systems and methods for monitoring knee replacements |
| CN103561093B (en) * | 2013-10-29 | 2018-02-02 | 北京品驰医疗设备有限公司 | The wireless program-controlled system of implantable medical devices |
| US20180125365A1 (en) | 2014-09-17 | 2018-05-10 | Canary Medical Inc. | Devices, systems and methods for using and monitoring medical devices |
| MX2018011544A (en) | 2016-03-23 | 2019-06-24 | Canary Medical Inc | Implantable reporting processor for an alert implant. |
| CN105994004A (en) * | 2016-05-19 | 2016-10-12 | 上海应特宠企业管理有限公司 | Pet real-time monitor system |
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| CN110974482A (en) * | 2019-11-22 | 2020-04-10 | 北京泌康医疗科技有限公司 | Urinary incontinence automatic control system with wireless transmission function and internal machine thereof |
| CN111780898A (en) * | 2020-07-02 | 2020-10-16 | 苏州大学 | Flexible pressure sensor suitable for curved surface stress measurement and preparation method thereof |
| CN112115672B (en) * | 2020-09-15 | 2024-01-26 | 中国兵器工业集团第二一四研究所苏州研发中心 | Layout structure of high-voltage multiplexer chip |
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