13 results about "Thumb joint" patented technology

The invention provides a dexterous hand which comprises a palm structure, a plurality of first joint modules and a second joint module, each first joint module comprises a first side swing assembly and a first finger structure, and each first finger structure comprises a plurality of first finger shells and a plurality of first knuckle steering engines arranged in the first finger shells; the first knuckle steering engines drive the first finger shells to rotate in a one-to-one correspondence mode, the second joint module comprises a second side swing assembly and a second finger structure, and the second finger structure comprises a plurality of thumb knuckle shells and a plurality of thumb knuckle steering engines arranged in the thumb knuckle shells. The thumb knuckle steering engines drive the thumb knuckle shells to rotate in a one-to-one correspondence mode. The dexterous hand provided by the invention has more active degrees of freedom, can more accurately simulate the movement of a human hand, and is longer in service life and lower in control difficulty. In addition, the first joint module and the second joint module are both independent modules, so that maintenance and replacement are convenient.

The invention relates to a multi-stage optimization and kinematics constraint-based thumb posture estimation method and computing equipment. The method comprises the following steps of: acquiring original hand data, preprocessing the original hand data, and initializing parameters; constructing a multi-objective optimization function with multiple constraints, obtaining an initial estimation thumb posture based on the preprocessed data, taking the initial estimation thumb posture as an initial value, and performing recursive calculation by using a kinematics chain to obtain an accurate angle of each joint of the thumb; integrating the accurate thumb joint angle to complete hand posture parameters and outputting the parameters; a computing device is implemented based on the method. Complete and accurate thumb kinematic chain recovery under incomplete input is achieved, it is guaranteed that all estimated thumb joint angles conform to the human anatomy activity range, and high-fidelity basic data are provided for downstream application; the generated thumb motion sequence is continuous and smooth in the time dimension, and the visual experience in real-time interaction application is greatly improved; in an interactive application, a more natural, accurate and jitter-free gesture control experience can be realized.

This invention relates to a multi-degree-of-freedom thumb structure and a multi-degree-of-freedom bionic hand. The multi-degree-of-freedom simulated hand includes a palm portion; the multi-degree-of-freedom thumb structure includes a first housing, a thumb assembly, and a lateral swing drive assembly; the first housing is mounted on the palm portion; the thumb assembly includes a proximal thumb joint, a mid-thumb joint, and a distal thumb joint connected in sequence; one end of the proximal thumb joint is connected to the palm portion via a first ball hinge structure, and the other end is connected to the mid-thumb joint via a second ball hinge structure; the power output end of the lateral swing drive assembly is connected to the proximal thumb joint and also to the mid-thumb joint, so that when it drives the thumb assembly to move closer to or away from the palm portion, it synchronously drives the mid-thumb joint to swing relative to the proximal thumb joint around the center of the second ball hinge structure, which has the advantage of high flexibility.

1. Name of the product in this design: Tenosynovitis Physiotherapy Device (Wristband-I). 2. Purpose of this design: To provide electrical stimulation or hot compress therapy for tenosynovitis in the wrist or thumb joint, while also offering protection. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. Name of the product in this design: Tenosynovitis Physiotherapy Device (WD3H-01). 2. Purpose of this product design: to provide electrical stimulation therapy for tenosynovitis in the wrist and thumb joints. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the technical field of medical instruments, in particular to a neurosurgery rehabilitation training device which comprises a fixed sleeve, a movable sleeve is arranged on one side of the fixed sleeve, a rotating assembly is arranged between the fixed sleeve and the movable sleeve and comprises a connecting block connected with the fixed sleeve, and a lantern ring is arranged in the connecting block; the transmission assembly is arranged in the connecting block, and the transmission assembly comprises a transmission gear rotationally arranged on one side of the lantern ring; the limiting assembly comprises a limiting rod arranged in the connecting block; the device has the beneficial effects that through cooperation of an air pump and an air inlet pipe, external air is discharged into an air bag, the air bag expands and pushes a sliding rod to move, in the moving process of the sliding rod, a transmission gear is driven to rotate through cooperation of a rotating shaft, and then a movable sleeve is driven to rotate relative to a fixed sleeve through cooperation of a second connecting rod; the thumb joint sleeved with the movable sleeve can move relative to the thumb joint in the fixed sleeve, and the purpose of finger rehabilitation training is achieved.

The invention provides a Neiguan acupoint targeting ASD intermediate frequency electrical stimulation child wearable device, and belongs to the technical field of electrical stimulation instruments.The Neiguan acupoint targeting ASD intermediate frequency electrical stimulation child wearable device comprises a massage instrument body, wrist strap connecting bands are installed at the front end and the rear end of the massage instrument body at intervals, and a positioning plate is installed on the outer side of the massage instrument body; a measuring plate is slidably mounted on the outer side of the massager body, and a driving unit used for pushing the measuring plate to slide up and down relative to the positioning plate is arranged in the massager body. During use, the width of the thumb joint of a child patient can be measured through the positioning plate and the measuring plate on the massage instrument body, the pressing plate can drive the measuring plate to move, meanwhile, the pushing assembly can drive the T-shaped plate to move downwards relative to the positioning plate through the transmission mechanism, and the moving distance of the T-shaped plate is twice that of the measuring plate; the T-shaped plate can move the width distance of the two thumb joints of the patient, manual judgment is needed, and the acupoint positioning accuracy is improved.

1. Name of the product in this design: Tenosynovitis Physiotherapy Device (WD3H-02). 2. Purpose of this product design: to provide electrical stimulation therapy for tenosynovitis in the wrist and thumb joints. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention belongs to the crossing field of flexible sensing and machine learning, and provides a wearable thumbstall system integrated with a self-monitoring learning algorithm, which can quickly adapt to a new task and a new user under the condition that only a small amount of data is used. According to the thumbstall, the two telescopic flexible sensors are integrated at the two joints of the thumb respectively, so that fine actions of the thumb can be captured with high precision. The flexible sensor is constructed based on an ionized water gel electrode of a periodically distributed layered triangular prism array structure, and a dielectric layer formed by a conductive silver nanowire and an Ecoflex composite material is sandwiched, so that excellent stretchability and electrical signal response capability are realized. In the aspect of algorithm design, a comparative learning model based on time sequence information is provided, discriminative characterization can be automatically extracted from random thumb motion signals, and therefore accurate recognition of multi-fingertip interaction tasks is achieved. Experimental results show that the system achieves the recognition accuracy exceeding 92% in the two tasks of direction gesture recognition and virtual key input. More importantly, the system supports free switching among tasks, the model does not need to be trained again, the practicability and the automation level of the system are remarkably improved, and the system has the potential of being popularized to wider man-machine interaction scenes.

The invention discloses a fiber-driven multi-finger clamping jaw coupled with a ball track mechanism. The fiber-driven multi-finger clamping jaw comprises a small arm integration unit, the ball track mechanism and a multi-finger clamping jaw body. The multi-finger clamping jaw comprises a palm part and a plurality of non-thumbs and thumbs, the non-thumbs and the thumbs comprise a plurality of cascaded joint assemblies, the length of each joint assembly is adjustable, the cascaded joint assemblies achieve linkage stretching through stretching fibers and achieve linkage bending through driving fibers, and the joint assemblies of the thumbs further achieve swinging through rotating fibers; the ball track mechanism generates linkage output through cooperation of three independent powers. And a plurality of groups of fiber winding mechanisms are arranged in the small arm integration unit. Lightweight clamping jaws are achieved through under-actuated design and fiber transmission, the number of driving units is greatly reduced through linkage of a small number of fibers and multiple joints, unified control logic is established based on fiber cooperative transmission, action synchronization of the multi-finger clamping jaws and a ball track mechanism is achieved, the aim of simplifying a control algorithm is achieved, and control operand and energy consumption are reduced.

1. Name of the product in this design: Tenosynovitis Physiotherapy Device (Wristband-II). 2. Purpose of this design: To provide electrical stimulation or hot compress therapy for tenosynovitis in the wrist or thumb joint, while also offering protection. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. The name of the design product: thumb joint prosthesis. 2. The use of the design product: for thumb joint replacement. 3. The design features of the design product: in shape. 4. The picture or photo that best shows the design features: perspective view 1.