Patents by Inventor Luya Li
Luya Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230293381Abstract: The present disclosure discloses an exoskeleton for rehabilitation, comprising: a healthy-side exoskeleton, an affected-side exoskeleton, a first sensor, a control unit, and a driving device, wherein the first sensor is configured to detect a pressure received by the shoe sole and generate a first electrical signal, the control unit is configured to judge, according to the first electrical signal, whether to generate the first control signal, and the driving device is configured to drive the affected-side exoskeleton according to the first control signal. When a shoe sole is not landed steadily, the affected-side exoskeleton does not drive the affected side to step out, thereby avoiding the problem that the affected side takes a step when the healthy side does not stand firm. Therefore, the present exoskeleton for rehabilitation has the advantages of better controlling for limb coordination and having higher using safety.Type: ApplicationFiled: March 1, 2023Publication date: September 21, 2023Inventors: Jianhui WANG, Luya LI, Pengfei ZHANG, Linggang YU, Yanjun FAN, Sen YANG
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Publication number: 20230210707Abstract: A single-lower-limb rehabilitation exoskeleton apparatus and control methods includes a controller, an intact lower-limb component and a paretic lower-limb component connecting communicatively with the controller. The controller is used to determine the current state of the intact lower-limb through the intact lower-limb component and the current state of the paretic lower-limb through the paretic lower-limb component. When the intact lower-limb component is in the lifting state, the movement data of the intact lower-limb is collected and sent to the controller. The controller is used to determine the corresponding gait data for the paretic lower-limb component according to the movement data of the intact lower-limb and send the gait data to the paretic lower-limb component. The paretic lower-limb component is used to drive the paretic lower-limb to move or walk according to the gait data while the intact lower-limb is in the supporting state.Type: ApplicationFiled: July 13, 2021Publication date: July 6, 2023Inventors: Fenghui YAN, Luya LI, Jian ZHANG
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Publication number: 20230210708Abstract: A mechanical foot includes a mechanical ankle joint including a leg portion configured to be fixed to a patient's leg, a foot portion configured to be fixed to the patient's foot, and a revolute. The leg portion and the foot portion are connected through the revolute in a manner of being rotatable relative to each other. The revolute includes a foot connecting portion connected to the foot portion and a leg connecting portion connected to the leg portion, and the foot connecting portion and the leg connecting portion are connected in a manner of being rotatable relative to each other. The revolute further includes a first elastic element having one end connected to the foot connecting portion, and the other end connected to the leg connecting portion, so that a force maintaining the patient's foot substantially horizontal is provided through the revolute at a position of the mechanical ankle joint.Type: ApplicationFiled: December 30, 2022Publication date: July 6, 2023Applicant: ANGELEXO SCIENTIFIC CO., LTDInventors: Yanjun FAN, Xiaoze WANG, Sen YANG, Xuehua CHEN, Luya LI
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Patent number: 9949648Abstract: A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave.Type: GrantFiled: September 9, 2013Date of Patent: April 24, 2018Assignee: Nellcor Puritan Bennett IrelandInventors: Luya Li, Rakesh Kumar Sethi, Ming Sun, Alexander Yuk Sit, Yong Liu
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Publication number: 20140012147Abstract: A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave.Type: ApplicationFiled: September 9, 2013Publication date: January 9, 2014Applicant: Nellcor Puritan Bennett IrelandInventors: Luya Li, Rakesh Kumar Sethi, Ming Sun, Alexander Yuk Sit, Yong Liu
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Patent number: 8560245Abstract: A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave.Type: GrantFiled: November 21, 2008Date of Patent: October 15, 2013Assignee: Nellcor Puritan Bennett IrelandInventors: Luya Li, Rakesh Kumar Sethi, Ming Sun, Alexander Yuk Sit, Yong Liu
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Publication number: 20100256461Abstract: Sensors for use in evaluating physiological conditions of tissue are provided on a structure having an opening for receiving a probe, finger or the like. The sensors include near infrared spectroscopy sensors in some embodiments. The structure may comprise a flexible sleeve that may be worn on the finger of a physician performing a rectal exam of the prostate, or placed over a rectal ultrasound probe for example. In an embodiment, a controller processes data from sensors to provide information relevant to blood flow in different parts of a subject's prostate gland.Type: ApplicationFiled: May 1, 2008Publication date: October 7, 2010Applicant: URODYNAMIX TECHNOLOGIES LTD.Inventors: Zeid Mohamedali, Luya LI
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Publication number: 20100145169Abstract: Methods and systems for detecting and alerting one to a condition of Compartment Syndrome provide for determining concentration data of biochemical compounds in tissues, preferably at a shallow depth beneath the skin; analysing the concentration data to detect a condition of Compartment Syndrome; and triggering an alarm if a condition of Compartment Syndrome is detected. The concentration of biochemical compounds may be measured using Near Infrared Spectroscopy. The biochemical compounds may comprise at least one compound from the group consisting of Hemoglobin, Oxygenated Hemoglobin, Cytochromes and Myoglobin.Type: ApplicationFiled: November 30, 2007Publication date: June 10, 2010Applicant: URODYNAMIX TECHNOLOGIES LTD.Inventors: Luya Li, Qichao Zhu, Phaik Koay, Matthew Peter Walls
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Publication number: 20100130880Abstract: A system for detecting blood flow in the prostate comprises a blood flow sensor disposed on a catheter that can be inserted into a subject's urethra so that the blood flow sensor is located to detect blood flow in the subject's prostate gland. The sensor may be a sensor of a near infrared spectroscopy (NIRS) system configured to detect in the prostate one or more biocompounds indicative of blood flow. An output of the sensor may provide an input to a controller for a heater disposed to heat tissues of the prostate. Some embodiments comprise one or more additional sensors for detecting blood flow and/or temperature of a portion of the subject's rectal wall adjacent to the prostate gland. In such embodiments, outputs from the additional sensors may provide additional inputs to the controller.Type: ApplicationFiled: April 16, 2008Publication date: May 27, 2010Applicant: URODYNAMIX TECHNOLOGIES LTD.Inventor: Luya Li
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Publication number: 20100127627Abstract: Apparatus and methods are provided for guarding against unintended exposure to light from a light-emitting device used to direct light to a subject for detection by a light detector. A sensor signal indicative of light detected by the light detector is sampled. An inhibition signal for inhibiting emission of light from the light-emitting device is generated, based at least in part on whether emitted light is expected from the light-emitting device and the comparison of the sampled sensor signal value to a threshold value. The light-emitting device may be monitored for continuous wave operation. A mechanical interlock may be provided having a guard moveable between closed and open positions respectively to cover and expose a port of the light-emitting device.Type: ApplicationFiled: May 1, 2008Publication date: May 27, 2010Applicant: URODYNAMIX TECHNOLOGIES LTD.Inventors: Qichao Zhu, Phaik Sun Koay, Luya Li
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Publication number: 20100087752Abstract: A system for monitoring urinary system operation comprises a sensor for detecting a level of one or more compounds in tissues of a subject's bladder. A processor identifies a pattern in a time variation of the level detected by the sensor. The processor generates an indicator of bladder function based at least in part on the identified pattern. In some embodiments the processor generates a possible diagnosis based upon the identified pattern and one or more pieces of additional information. The additional information may comprise one or more of: a residual amount of urine after urination; a maximum uroflow rate; and, a delay in onset of urination.Type: ApplicationFiled: March 20, 2008Publication date: April 8, 2010Inventors: Luya Li, Raymond Jacob Becker, Matthew Peter Walls
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Publication number: 20100084557Abstract: A system for near infrared spectroscopy includes a controller that automates selection of light intensities for one or more light sources. The system may stepwise increase or decrease a current driving a light source until a signal received at a light detector is within a desired range. The system may maintain closed loop control over the intensity of a light source after the intensity has been set. The closed loop control may be based on a signal from a second light detector that senses light from the light source. Current/intensity settings may be established for each of multiple light detectors. In response to selection of a light detector, the corresponding current may be delivered to drive the light source.Type: ApplicationFiled: May 1, 2008Publication date: April 8, 2010Applicant: Urodynamix Technologies Ltd.Inventors: Phaik Sun Koay, Qichao Zhu, Luya Li
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Publication number: 20100030117Abstract: Methods and systems for monitoring erectile function or dysfunction provide for determining concentration data of biochemical compounds in a subject's erectile tissues; and analyzing the concentration data to yield values indicative of the subject's erectile function. The concentration of biochemical compounds may be measured using Near Infrared Spectroscopy (NIRS). The biochemical compounds may comprise at least one compound from the group consisting of Hemoglobin, Oxygenated Hemoglobin, Cytochromes and Myoglobin.Type: ApplicationFiled: February 2, 2008Publication date: February 4, 2010Applicant: Urodynamix Technologies Ltd.Inventors: Luya Li, Sidney Ben Radomski
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Publication number: 20090076398Abstract: A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave.Type: ApplicationFiled: November 21, 2008Publication date: March 19, 2009Applicant: Nellcor Puritan Bennett IrelandInventors: Luya Li, Rakesh Kumar Sethi, Ming Sun, Alexander Yuk Sit, Yong Liu
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Patent number: 7455643Abstract: A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave.Type: GrantFiled: December 20, 2004Date of Patent: November 25, 2008Assignee: Nellcor Puritan Bennett IrelandInventors: Luya Li, Rakesh Kumar Sethi, Ming Sun, Alexander Yuk Sit, Yong Liu
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Patent number: 7263396Abstract: A sensor assembly for monitoring physiological characteristics interfaces to a subject's ear. The sensor assembly has a projection that projects into the subject's concha. The projection may have a notch to accommodate the subject's anti-tragus. A clip connected to the projection holds a sensor against the subject's lobule. The sensor may comprise a pulse-oximetry-type sensor.Type: GrantFiled: July 28, 2004Date of Patent: August 28, 2007Assignee: Cardiodigital LimitedInventors: Yunquan Chen, Luya Li, Rakesh Kumar Sethi, Ming Sun, Christopher Grant Denny, Scott Howard Phillips
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Patent number: 7248910Abstract: A detachable sensor assembly for use in monitoring a physiological parameter of a subject includes an information containing circuit and a timer. The sensor assembly stores time varying information in the information containing circuit. The information may include cumulative use times for the detachable sensor assembly and/or for components in the detachable sensor assembly.Type: GrantFiled: October 22, 2002Date of Patent: July 24, 2007Assignee: CardioDigital LimitedInventors: Luya Li, Rakesh Kumar Sethi, Ming Sun
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Patent number: 6893401Abstract: A non-invasive apparatus and method for monitoring the blood pressure of a subject detects a pulse signal at both a first and second location on the subject's body The elapsed time between the arrival of corresponding points of the pulse signal at the first and second locations is determined. Blood pressure is related to the elapsed time by relationships such as: P=a+b ln(T), where a and b are constants dependent upon the nature of the subject and the signal detecting devices.Type: GrantFiled: May 15, 2003Date of Patent: May 17, 2005Assignee: VSM Medtech Ltd.Inventors: Yunquan Chen, Luya Li, Cecil Hershler, Ryan Peter Dill
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Publication number: 20050033131Abstract: A sensor assembly for monitoring physiological characteristics interfaces to a subject's ear. The sensor assembly has a projection that projects into the subject's concha. The projection may have a notch to accommodate the subject's anti-tragus. A clip connected to the projection holds a sensor against the subject's lobule. The sensor may comprise a pulse-oximetry-type sensor.Type: ApplicationFiled: July 28, 2004Publication date: February 10, 2005Applicant: VSM MedTechInventors: Yunquan Chen, Luya Li, Rakesh Sethi, Ming Sun, Christopher Denny, Scott Phillips
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Publication number: 20040267103Abstract: A detachable sensor assembly for use in monitoring a physiological parameter of a subject includes an information containing circuit and a timer. The sensor assembly stores time varying information in the information containing circuit. The information may include cumulative use times for the detachable sensor assembly and/or for components in the detachable sensor assembly.Type: ApplicationFiled: April 21, 2004Publication date: December 30, 2004Inventors: Luya Li, Rakesh Kumar Sethi, Ming Sun