Patents by Inventor Li-Qun Zhang
Li-Qun Zhang 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).
-
Publication number: 20240135102Abstract: A method of this disclosure may include performing a named entity recognition on text information related to requirements for a wireframe by a first artificial intelligence (AI) model, so as to extract entities and relations of the entities from the text information. The method may further comprise inputting the extracted entities and relations to a second AI model to generate the wireframe, wherein the second AI model is trained so that a difference between resultant relations of the entities of the generated wireframe and the extracted relations of the entities from the first AI model is decreased.Type: ApplicationFiled: October 19, 2022Publication date: April 25, 2024Inventors: Zhaoqi Wu, Yi Fang Chen, Zhi Wang, Yi Qun Zhang, Yan Du, Li Na Yuan
-
Publication number: 20230263418Abstract: Techniques for non-invasive detection of compartment syndrome (CS) in a subject, includes an apparatus having a structural body configured to be held in a human hand. The structural body includes a subject contact element that is not in contact with the human hand and is configured to contact but not penetrate a skin layer of a subject. The apparatus also includes an optical sensor configured to detect oxygen saturation at a plurality of depths of a subject in contact with the subject contact element. The optical sensor includes at least one light emitting diode (LED) and multiple photo detectors at corresponding different distances from the LED.Type: ApplicationFiled: February 23, 2023Publication date: August 24, 2023Inventors: Li-Qun ZHANG, Andrew N. POLLAK, Robert O'TOOLE, Giovanni OPPIZZI
-
Patent number: 9120928Abstract: The invention relates to a method for preparing silica modified by a silane coupling agent. The method comprises the following steps: preparing a kind of coupling agent sol solution by mixing the solvent, water, catalyst and coupling agent; uniformly dispersing silica into the sol solution by means of ultrasonic dispersion or shear dispersion to achieve a turbid solution with uniform dispersion and ideal particle size; and then stirring the turbid solution at a constant speed to make the coupling agent sol reacting with silica to prepare highly hydrophobic silica modified by the coupling agent through controlling the temperature and reaction time. The coupling agent sol solution is obtained by a sol-gel process and silica is uniformly dispersed in the coupling agent sol solution through combined action of various dynamic means to ensure the sufficient reaction between silica and coupling agent, thus to obtain silica modified by the coupling agent.Type: GrantFiled: July 29, 2011Date of Patent: September 1, 2015Assignee: Beijing University of Chemical TechnologyInventors: Li Liu, Fa zhong Zhang, Ying yan Mao, Yan Li, Shui Hu, Shi peng Wen, Li qun Zhang
-
Patent number: 8840527Abstract: An exercise apparatus is disclosed. The exercise apparatus comprises: a three-dimensional coordinate system having an x-axis, a y-axis, and a z-axis; lower limb segments; a moving arm; a multi-axis force sensor; at least one footplate attached to said multi-axis force sensor for supporting a human foot or shoe; a compact real-time ankle motion measurement device, said motion measurement device attached between the leg and foot and capable of measuring the ankle joint motion in at least one degree of freedom; and a central processor, said central processor capable of calculating lower-limb joint moments in real time. The central processor calculates lower-limb joint moments with a modified inverse dynamic method, which does not involve computation of location of center of pressure.Type: GrantFiled: April 26, 2012Date of Patent: September 23, 2014Assignee: Rehabtek LLCInventors: Li-Qun Zhang, Sang Hoon Kang
-
Patent number: 8795139Abstract: This invention provides a lower-limb off-axis movement training apparatus, which is mounted on the movement part of a sagittal plane exercise machine and allows the user to perform off-axis movement training during sagittal plane functional movements. The said apparatus for the lower limb off-axis training consists of a base, an off-axis movement generating part mounted on the base, and a foot container supported by the off-axis movement generating part. The said off-axis movement generating part comprising at least one of the following two: (1) off-axis pivoting generating part, which generates the pivoting movement of the foot container; (2) off-axis sliding generating part, which generates the sliding movement of the foot container. A feedback training system including the said training apparatus is provided. While the user performs sagittal plane movements of the lower limbs, the said system provides off-axis movement training integrated with the sagittal plane movements.Type: GrantFiled: December 30, 2009Date of Patent: August 5, 2014Assignee: Rehabtek LLCInventors: Li-Qun Zhang, Yupeng Ren
-
Patent number: 8636627Abstract: Anterior cruciate ligament (ACL) is the most commonly injured knee ligament in sports-related activities, especially in pivoting sports. Considering that the knee is free to flex/extend but has much more limited motions about the off-axes (tibial rotation and valgus/varus), ACL injuries are often associated with excessive off-axis loadings. A pivoting/sliding mechanism combined with sagittal plane movement/exercise is described as a diagnostic tool to evaluate off-axis neuromechanical and anatomical risk factors of noncontact ACL injuries. The pivoting/sliding mechanism is also described as an intervention tool for off-axis training, possibly based on the diagnosis, to reduce the incidence of ACL injuries. Training outcome can also be evaluated using the pivoting/sliding mechanism. In general, the pivoting/sliding mechanism can be used with many sagittal plane exercise machines and used to improve off-axis control of the lower limbs and reduce lower limb injuries.Type: GrantFiled: March 24, 2008Date of Patent: January 28, 2014Assignee: Rehabtek LLCInventors: Li-Qun Zhang, Hyung-Soon Park, Yupeng Ren
-
Publication number: 20130326388Abstract: The invention relates to a power grid visualization system and a power grid visualization method based on a three-dimensional geographic information system (GIS) technology. Models to be loaded are divided into different model loading subtasks according to the difference of object types included in a scene to be loaded, and model files are called in parallel from a plurality of subtasks in a multi-thread mode; and meanwhile, on the basis that loading tasks are divided into a plurality of model loading subtasks according to the loaded object types, model files of objects of each type are only read once, moreover, reuse of the model files is not limited to a client loading task, different clients can reuse the read model files, and the characteristics of limited type and relatively consistent specification of power equipment are fully considered, so that rereading of the model files of the same type is avoided.Type: ApplicationFiled: May 31, 2013Publication date: December 5, 2013Inventors: Xiang SHI, Sheng Chuan ZHAO, Zhi Yong CHEN, Xing Zhao WANG, Ke Cun HAN, Li Qun ZHANG, You Jie WANG, Cheng Ming LIU, Qiang XU, Xian Ming LAN
-
Publication number: 20130131357Abstract: The invention relates to a method for preparing silica modified by a silane coupling agent. The method comprises the following steps: preparing a kind of coupling agent sol solution by mixing the solvent, water, catalyst and coupling agent; uniformly dispersing silica into the sol solution by means of ultrasonic dispersion or shear dispersion to achieve a turbid solution with uniform dispersion and ideal particle size; and then stirring the turbid solution at a constant speed to make the coupling agent sol reacting with silica to prepare highly hydrophobic silica modified by the coupling agent through controlling the temperature and reaction time. The coupling agent sol solution is obtained by a sol-gel process and silica is uniformly dispersed in the coupling agent sol solution through combined action of various dynamic means to ensure the sufficient reaction between silica and coupling agent, thus to obtain silica modified by the coupling agent.Type: ApplicationFiled: July 29, 2011Publication date: May 23, 2013Applicant: Beijing University of Chemical TechnologyInventors: Li Liu, Fa zhong Zhang, Ying yan Mao, Yan Li, Shui Hu, Shi peng Wen, Li qun Zhang
-
Patent number: 8317730Abstract: This patent describes an 8+2 degrees of freedom (DOF) intelligent rehabilitation robot capable of controlling the shoulder, elbow, wrist and fingers individually and allowing functional arm movements with accompanying trunk and scapular motions.Type: GrantFiled: February 15, 2008Date of Patent: November 27, 2012Assignee: Rehabtek LLCInventors: Li-Qun Zhang, Hyung-Soon Park, Yupeng Ren
-
Publication number: 20120277063Abstract: A real-time estimation of 3D moments of lower-limb joints using a robotic multi-axis training system with a 6-axis force/torque (F/T) sensors and a 6-DOF goniometer is described. A joint moment such as the knee abduction moment (KAM) can be determined in real-time without using sophisticated optoelectronic motion tracking system. The system also does not require computation of the COP location. The knee adduction moment or any other lower-limb 3D joint moments can be determined conveniently during stepping movement on the training system for real-time biofeedback training on controlling the targeted joint moment(s). The 6-DOF goniometer is convenient to use with other analog signals including the 6-axis F/T and locomotion variables.Type: ApplicationFiled: April 26, 2012Publication date: November 1, 2012Applicant: REHABTEK LLCInventors: Li-Qun Zhang, Sang Hoon Kang
-
Publication number: 20120172176Abstract: This invention provides a lower-limb off-axis movement training apparatus, which is mounted on the movement part of a sagittal plane exercise machine and allows the user to perform off-axis movement training during sagittal plane functional movements. The said apparatus for the lower limb off-axis training consists of a base, an off-axis movement generating part mounted on the base, and a foot container supported by the off-axis movement generating part. The said off-axis movement generating part comprising at least one of the following two: (1) off-axis pivoting generating part, which generates the pivoting movement of the foot container; (2) off-axis sliding generating part, which generates the sliding movement of the foot container. A feedback training system including the said training apparatus is provided. While the user performs sagittal plane movements of the lower limbs, the said system provides off-axis movement training integrated with the sagittal plane movements.Type: ApplicationFiled: December 30, 2009Publication date: July 5, 2012Applicant: REHABTEK LLCInventors: Li-Qun Zhang, Yupeng Ren
-
Publication number: 20120165158Abstract: In respects of limitations and problems of motor function training devices, the present invention provides a wearable and convertible device and a method for controlling combined motor function training. This device integrates the functions of both passive stretching function in the existing CPM devices and additional active assistive training function. Without a force/torque sensor element in the device, the present passive stretching control can still be adapted to hypertonia (high muscle tone or stiffness of joints) of the limb, and the present active assistive control can still be implemented for enhancing voluntary active movement from patients. With such present method, much more applications of active assistive training are supported at substantially no additional cost. On the other hand, the safety of such stretching devices without using force/torque sensor is improved, which assists in increasing the efficiency of the device of the present invention.Type: ApplicationFiled: December 14, 2011Publication date: June 28, 2012Applicant: REHABTEK LLC.Inventors: Yupeng Ren, Li-Qun Zhang
-
Patent number: 7998094Abstract: An apparatus and method for examining fiber tension, fiber stress, sarcomere length, etc. in muscle fibers and tension and stress in ligament or tendon tissues as well as brain or nerve fibers by applying a lifting force to lift the fiber or tissue a lifting distance, measuring the lifting force and distance and calculating the axial tension on the fiber bundle or tissue. The apparatus and method also make it possible to illuminate and view the fiber bundle or tissue to examine and characterize visually observable properties.Type: GrantFiled: April 17, 2009Date of Patent: August 16, 2011Assignee: Rehabilitation Institute of ChicagoInventors: Li-Qun Zhang, Yi-Ning Wu, Yupeng Ren
-
Publication number: 20100145233Abstract: Anterior cruciate ligament (ACL) is the most commonly injured knee ligament in sports-related activities, especially in pivoting sports. Considering that the knee is free to flex/extend but has much more limited motions about the off-axis (tibia rotation and valgus/varus), ACL injuries are often associated with excessive off-axis loadings. A pivoting/sliding mechanism combined with sagittal plane movement/exercise is described as a diagnostic tool to evaluate off-axis neuromechanical and anatomical risk factors of noncontact ACL injuries. The pivoting/sliding mechanism is also described as an intervention tool for off-axis training, possibly based on the diagnosis, to reduce the incidence of ACL injuries. Training outcome can also be evaluated using the pivoting/sliding mechanism. In general, the pivoting/sliding mechanism can be used with many sagittal plane exercise machines and used to improve off-axis control of the lower limbs and reduce lower limb injuries.Type: ApplicationFiled: March 24, 2008Publication date: June 10, 2010Applicant: REHABTEK LLCInventors: Li-Qun Zhang, Hyung-Soon Park, Yupeng Ren
-
Publication number: 20100106059Abstract: A pocket neuromuscular evaluator delivers controlled tendon taps, makes quantitative measures of the taps and the reflex responses invoked, evaluates not only the neurological reflexes but also the muscle-joint properties, analyzes the data, displays the results, and records them to provide quantitative characterizations of the neuromuscular and joint properties.Type: ApplicationFiled: March 24, 2008Publication date: April 29, 2010Applicant: REHABTEK LLCInventors: Li-Qun Zhang, Hyung-Soon Park, Yupeng Ren
-
Publication number: 20100016766Abstract: This patent describes an 8+2 degrees of freedom (DOF) intelligent rehabilitation robot capable of controlling the shoulder, elbow, wrist and fingers individually and allowing functional arm movements with accompanying trunk and scapular motions.Type: ApplicationFiled: February 15, 2008Publication date: January 21, 2010Applicant: REHABTEK LLCInventors: Li-Qun Zhang, Hyung-Soon Park, Yupeng Ren
-
Patent number: 7535797Abstract: An ultrasound method of measuring displacement with high resolution includes transmitting a pair of Golay's complementary sequences or other complementary sequences, receiving echoes from the object and performing pulse compression of the two sequences of echoes. The displacement of the object between the two transmissions is derived from the residual clutter signals around the mainlobe of the compressed pulse output. Furthermore, movement velocity, thickness, strain, elastic stiffness, and viscous damping of the object or regions of the object can be determined subsequently.Type: GrantFiled: June 20, 2006Date of Patent: May 19, 2009Assignee: RehabtekInventors: Qiyu Peng, Li-Qun Zhang
-
Publication number: 20080194997Abstract: A system and method are provided for in vivo, noninvasive diagnosis of patellar and scapular malalignment and maltracking. The patellar system and method include a patella-engaging apparatus and a motion analysis system. The patella-engaging apparatus includes a member that has a custom-contoured posterior surface that is configured to engage an anterior surface of a subject's patella. A plurality of markers is coupled with the anterior surface of the member and the motion analysis system optically tracks the plurality of markers. The system and method may optionally include a second portion such as a goniometer that tracks relative movement of the tibial and femoral portions of the subject's leg proximate to the patella. The member that has the custom-contoured posterior surface may be employed in a method and system for treating malalignment and maltracking, and a method for evaluating the effectiveness of treatment of the same.Type: ApplicationFiled: February 8, 2007Publication date: August 14, 2008Applicant: Rehabilitation Institute of ChicagoInventor: Li-Qun Zhang
-
Publication number: 20070291591Abstract: An ultrasound method of measuring displacement with high resolution includes transmitting a pair of Golay's complementary sequences or other complementary sequences, receiving echoes from the object and performing pulse compression of the two sequences of echoes. The displacement of the object between the two transmissions is derived from the residual clutter signals around the mainlobe of the compressed pulse output. Furthermore, movement velocity, thickness, strain, elastic stiffness, and viscous damping of the object or regions of the object can be determined subsequently.Type: ApplicationFiled: June 20, 2006Publication date: December 20, 2007Applicant: Rehab TekInventors: Qiyu Peng, Li-Qun Zhang
-
Patent number: 6599255Abstract: A portable intelligent stretching device for use by patients suffering from spastic and contractured joints and limbs. The intelligent stretching device has a motor and a motor shaft for rotating the joint or limb. The variable velocity and stretch distance of the device is determined by a torque sensor on the joint or limb that communicates information to a controller which subsequently instructs the motor as to the variable velocity and stretch distance.Type: GrantFiled: May 31, 2001Date of Patent: July 29, 2003Assignee: Rehabilitation Institute of ChicagoInventor: Li-Qun Zhang