17 results about "Transfemoral prosthesis" patented technology

The utility model relates to the technical field of artificial limbs, and provides an artificial limb with a joint capable of being assembled and disassembled, which comprises a shank artificial limb, a thigh artificial limb assembly is arranged above the shank artificial limb, the thigh artificial limb assembly comprises a thigh artificial limb, and the bottom of the thigh artificial limb is fixedly connected with a supporting rod. A connecting sleeve perpendicular to the supporting rod is fixedly connected to the bottom of the supporting rod, a fixing shaft penetrating through the connecting sleeve is connected to the inner side of the connecting sleeve in a sleeving mode, the connecting sleeve is rotationally connected with the fixing shaft, clamping blocks are fixedly connected to the two ends of the fixing shaft, and a connecting structure used for connecting the artificial shank with the fixing shaft is arranged at the top of the artificial shank. During disassembly, the thigh artificial limb and the shank artificial limb can be separated to complete disassembly only by operating the positioning component to separate the clamping block, the whole process is simple to operate, and the thigh artificial limb and the shank artificial limb are convenient to maintain.

The invention discloses a digitization and flexible pressure sensor combined thigh prosthetic socket optimization manufacturing method. Performing digital reconstruction on the thigh stump physical model; performing space calibration and size calibration processing on the reconstructed stump structural plane digital model; carrying out sparse processing on the stump structural plane digital model after space calibration and size calibration, and editing and optimizing the stump structural plane digital model; splicing the sparse point cloud digital model and the digital point cloud model of the hat brim and the seat support to form a thigh artificial limb digital model; a flexible pressure sensor is arranged for pressure analysis and adjustment of the thickness of a local segment, a prosthetic socket digital model with double-sided sparse point clouds formed on the outer layer surface is generated, and finally conversion is performed for 3D printing. According to the invention, the flexible sensing unit corresponds to the point cloud unit on the digital skin, real-time change evaluation of muscle stress under static and dynamic conditions is carried out, the physiological change of a patient can be rapidly adapted during re-examination, and a more personalized and timely rehabilitation solution is provided.

The utility model discloses an artificial thigh mounting and fixing structure which comprises a fastening cover, and the interface of the fastening cover is of a U-shaped structure. The supporting mechanism is a thigh prosthesis main body and is used for supporting the legs of the patient; the mounting mechanism is arranged in the supporting mechanism, and the mounting mechanism and the supporting mechanism carry out sliding limiting work through the sliding mechanism and the sliding groove mechanism. According to the thigh artificial limb mounting and fixing structure, the mounting mechanism is arranged in a traditional thigh artificial limb body, when a patient needs to mount an artificial limb, the leg can be directly placed in the mounting mechanism, and the position of a supporting mechanism outside the mounting mechanism is changed, so that the patient can conveniently mount the artificial limb; the thigh artificial limb body can be directly controlled to move to the position right ahead of a patient by adjusting the thigh artificial limb body, and therefore it is guaranteed that when the artificial limb is misplaced during installation, the patient does not need to disassemble the whole artificial limb, adjustment work can be conducted, and operation is very convenient.

1. The name of the design product: thigh prosthesis decorative shell (simple type). 2. The use of the design product: prosthesis decorative shell, the product is suitable for the outer packaging of thigh prosthesis. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combination use state reference figure 1.

A prosthesis or orthosis device includes a knee joint connectable with the user's leg; a swing storage spring-gear mechanism comprising a balancing spring inserted in an ankle member housing located in an ankle member, a drive gear, a driven gear, an intermediate gear and a gear rod, and a foot part comprising a dorsiflexion spring; a lower leg connecting a knee joint and a foot part to each other, in which a weight-receiving member is located; and a swing storage mechanism connected to the foot part by a second housing of the connection tube and a gear rod pin, and to the knee joint by a first housing of the connection tube and a first housing of the knee joint; and a weight-receiving mechanism comprising a weight-receiving member and a compression arm and a lock fork for activating and deactivating the weight-receiving member.

The application discloses a kind of thigh prosthesis socket optimization manufacturing method combined with digital and flexible pressure sensor.The digital reconstruction of thigh residual limb physical model;To the residual limb profile digital model after reconstruction Space calibration and size calibration processing;To the residual limb profile digital model after space calibration and size calibration Sparse processing and editing and optimization;Sparse point cloud digital model and digital point cloud model of brim and seat are spliced into thigh prosthesis digital model;Set up flexible pressure sensor pressure analysis adjustment local fragment thickness, generate outer surface to form double-sided sparse point cloud Prosthesis socket digital model, finally conversion carries out 3D printing.The application utilizes flexible sensing unit and the point cloud unit on digital skin corresponding, carries out static and dynamic muscle stress real-time change evaluation, can quickly adapt to physiological changes of patient when rechecking, provide more personalized and timely rehabilitation solution.

Method of designing a trans-femoral prosthesis, which includes an artificial limb replacing the missing limb and a terminal for coupling said artificial limb to a stump, the method comprising the following steps: the separation of the coupling terminal to the stump into two functional components (1, 2); the definition of an algorithm that describes the three-dimensional trend of the shape of the internal surface of the first component (1) intended to adhere to the external surface of a generic stump; generating a function that describes the shape of the internal surface of said first component (1) morphologically adapted to a specific stump; the generation of a digital model of said first and / or second component configurable or convertible into a command file for the control of a manufacturing device of the numerical control type; manufacturing of said prosthetic socket obtained by executing said command file; and the coupling of the said two components of the said prosthetic socket.

1. Name of this design product: Thigh Prosthetic Decorative Shell (Closed Version 2). 2. Purpose of this design: decorative shell for prostheses; this product is suitable for outer packaging of thigh prostheses. 3. The key design feature of this product is its shape. 4. Images or photos that best illustrate the design highlights: Refer to Figure 1 for usage status.

1. Name of this design product: Thigh Prosthetic Decorative Shell (Simulated Leg Style). 2. Purpose of this design: decorative shell for prostheses; this product is suitable for outer packaging of thigh prostheses. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the technical field of prostheses, in particular to an auxiliary thigh prosthesis shaping device which comprises a socket shaping clamping plate, and two first perforated fixing seats are fixedly mounted on the outer surface of the socket shaping clamping plate through two groups of bolts. According to the device, the thigh part to be shaped can be wrapped by arranging the socket shape-taking clamping plate, the two ends of the socket shape-taking clamping plate can be close to each other through cooperation of a rack connecting belt with a hole and a second fixing seat with a hole, and then the socket shape-taking clamping plate can tighten the shape-taking part; by means of cooperation of a perforated rack connecting belt and a tooth groove, a perforated clamping plate can position the perforated rack connecting belt and prevent the perforated rack connecting belt from loosening, so that external force can be stably applied to the shaping position, it is ensured that the plaster binding belt is tightly attached to the affected limb, the hand of a worker is prevented from loosening, and the working efficiency is improved. And it is ensured that the leg shaping size is kept accurate, and the working intensity is reduced.

The application discloses a joint detachable artificial limb, which comprises a thigh artificial limb, a lower leg artificial limb and a foot artificial limb, a waistband is arranged above the thigh artificial limb, fixed blocks and magic tape thorn surfaces are fixedly connected to the front and back sides of the thigh artificial limb, a through slot is formed in the fixed block, a connecting belt is movably arranged in the through slot, and the magic tape hair surfaces are fixedly connected to the side of the connecting belt close to the thigh artificial limb.

Methods for designing a prosthetic feet for use by above-knee amputees, and the resulting prosthetic foot designs, are disclosed. The prosthetic foot can be optimized to best replicate hip movement of an able-bodied user for an above-knee amputee that inherently lacks early and mid-stance knee flexion. The replication can be determined by minimizing what is referred to as a hip trajectory error. The resulting prosthetic foot design includes a keel, an elongated forefoot section attached to the keel at an attachment point, the forefoot section having a toe portion anterior to the attachment point, and a heel attached to the forefoot section and positioned posterior to the attachment point. The keel, the forefoot section, and the heel are configured to provide both shock absorption and replication of hip motion of a comparable able-bodied user despite a lack of early-stance knee flexion and mid-stance knee flexion to an above-knee amputee.

The invention discloses an artificial limb knee joint and an artificial limb. Core components of the artificial limb knee joint comprise a shell, a knee joint assembly, a shank connecting assembly, a pressure sensing assembly and a control assembly. The knee joint assembly is rotatably connected with the shell and is provided with a first connecting structure connected with the thigh artificial limb component; the shank connecting assembly is connected with the shank artificial limb component through a second connecting structure. The pressure sensor is installed at the rotating or connecting structure, and the control circuit board is arranged in the shell and electrically connected with the sensor so as to detect the motion state of the artificial limb. A pure mechanical sensing scheme is adopted, the problems of dependence of a visual sensor on light and drifting of an inertial sensor are solved, and the complex environment adaptability is remarkably improved. Moreover, the hardware structure of the single-mode pressure sensing system is simplified, and the cost and the data processing complexity are reduced; more comprehensive motion information is obtained through multi-position pressure distribution detection, the retreating action recognition accuracy is improved, and the safety and control convenience of the artificial limb in the scene of obstacle avoidance and the like are enhanced.

The utility model relates to the technical field of artificial limbs, in particular to a thigh artificial limb socket which comprises a supporting seat, a mounting assembly, an adjusting assembly, a fixing assembly and a connecting assembly. The mounting assembly comprises hinges, mounting plates and a mounting seat, the multiple hinges are fixedly connected with the supporting seat and located at the top of the supporting seat, the multiple mounting plates are rotationally connected with the hinges and located at the tops of the hinges, and the mounting plates are rotationally connected with the supporting seat and located at the tops of the hinges; the top of each mounting plate is fixedly connected with one mounting seat, the adjusting assembly and the fixing assembly are respectively connected with the mounting seats, and the connecting assembly is connected with the supporting seat, so that the problems that when the thigh artificial limb socket is used, the contact part of the socket and the residual limb is inconvenient to adjust, and the socket is easy to displace after long-time use are solved.

The utility model discloses an artificial lower limb capable of intelligently adjusting damping based on an IMU (Inertial Measurement Unit) and magnetorheological fluid. Comprising a stump mounting sleeve, an artificial thigh part, a knee rotary magnetorheological fluid damper, an artificial shank part, a leg telescopic magnetorheological fluid damper, an ankle rotary magnetorheological fluid damper, an artificial foot part, a foot telescopic magnetorheological fluid damper, an inertia measurement sensor, a first pressure sensor, a second pressure sensor and a damping controller, the stump mounting sleeve is arranged at the upper end of the thigh artificial limb part and used for being connected with a thigh amputation part, and the bottom end of the thigh artificial limb part is rotationally connected with the shank artificial limb part through the knee rotary magnetorheological fluid damper; the bottom end of the lower leg artificial limb part is connected with the artificial foot part through the ankle rotary magnetorheological fluid damper, a gravity center cavity is formed in the gravity center position of the whole artificial lower limb, and the inertia measurement sensor is installed in the gravity center cavity.

The application belongs to the technical field of human exoskeletons, and specifically discloses a thigh prosthesis knee joint exoskeleton and a control method thereof. The application comprises a driving module, a thigh fixing module, a shank fixing module and a knee joint connecting module, wherein the exoskeleton is fixed on the prosthesis through the thigh fixing module, the shank fixing module and the knee joint connecting module. The rotation movement of the motor output shaft is converted into the linear movement of the sliding block through the screw transmission mechanism in the driving module, and then the linear movement of the sliding block is converted into the rotation movement of the shank of the prosthesis around the rotation shaft of the knee joint of the prosthesis through the crank slider mechanism, and the size of the initial installation angle is set by the variable force arm characteristics of the crank slider mechanism, so that the output torque of the shank of the prosthesis can better match the gait of the user, thereby significantly improving the gait stability, power assistance efficiency and wearing comfort of the existing unpowered prosthesis.