13 results about "Fixed joint" patented technology

This invention belongs to the field of medical devices, specifically a combined internal fixator and fixation method for fixing joints with micro-motion. The combined internal fixator includes a first bone screw and a second bone screw. A movable connecting structure is provided between the connecting ends of the first and second bone screws. The movable connecting structure includes a groove and a shaft. The groove includes an insertion port and a mounting groove communicating with the insertion port. The mounting groove has a semi-circular cross-section. The shaft includes a semi-circular shaft adapted to the mounting groove, which is rotatably accommodated within the mounting groove, allowing the first and second bone screws to rotate relative to each other around a first radial axis. This invention, through a hook-groove sliding self-locking structure, achieves controllable micro-motion and integrated implantation for fixing joints with micro-motion. It has achieved significant technological advancements in preserving joint physiological function, simplifying surgical procedures, avoiding secondary surgeries, and reducing the incidence of complications. It has important clinical application value and is suitable for fixing joints with micro-motion.

The utility model discloses a mixed fixing type joint prosthesis assembly, belongs to the technical field of joint prostheses, and is designed for solving the problems that a joint prosthesis in the prior art is loosened and even falls off and the like. The utility model discloses a mixed fixing type joint prosthesis assembly which comprises a joint prosthesis which is an arc-shaped face, and the inner concave face of the joint prosthesis comprises a posterior condyle area and a main body area. The biological material layer covers at least part of the posterior condyle area, and the biological material layer is used for forming bone ingrowth between the biological material layer and the to-be-connected bone. According to the mixed fixing type joint prosthesis assembly, the stability of connection is improved through bone ingrowth formed between the biological material layer and the skeleton to be connected, and the problem that in the prior art, bone cement in the posterior condyle area cannot reach the effective penetration depth, and consequently a joint prosthesis is loosened and even falls off from the skeleton of the human body is solved; connection between the joint prosthesis assembly and the to-be-connected skeleton is more stable, and the use experience is better.

The motion quality evaluation method based on motion perception and double-flow space-time graph convolution relates to the motion quality evaluation field, solves the problems that the existing rehabilitation motion quality evaluation method is difficult to accurately model the cooperation between joints, the fixed joint grouping strategy is not flexible enough, the model has insufficient recognition of the detail differences of complex rehabilitation motions, and the reliability of the evaluation result is affected, a dynamic joint grouping strategy based on motion amplitude driving is provided, a double-flow STGCN architecture is designed, the position and orientation information of the joints are processed respectively and then fused, a two-stage self-attention module SADG is developed, the inter-group time sequence mode and the intra-group spatial relationship are modeled in stages, and multi-granularity feature interaction fusion is realized. The attention mechanism introduces a constraint guided by the motion amplitude, so that the attention weight is more interpretable and has physical meaning.

1. The name of the design product: fixed joint. 2. The use of the design product: for clinical drainage. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a pipeline inserting machine, which relates to the technical field of pipeline inserting appliances and comprises a base, a mounting rack is vertically and fixedly connected to the middle of the top surface of the base, an upper clamping claw and a lower clamping claw are mounted between the base and the mounting rack, and an adjusting component is mounted between the base and the mounting rack; according to the pipeline clamping device, the upper clamping claw and the lower clamping claw are matched, so that a pipeline can be conveniently clamped and positioned, and the pipeline is prevented from deviating when being inserted; through the cooperation of the port upper jig and the port lower jig, the port part can be conveniently clamped and positioned, and the pipeline insertion effect and the pipeline insertion efficiency are improved; through cooperation of the width measuring sensor and the equipment sensor, whether the port component is in place or not and whether the port component and the pipeline are aligned or not can be conveniently detected, and the insertion efficiency is improved; and through cooperation of the electric push rod and the supporting frame, the insertion force and depth of each time can be conveniently controlled, and therefore the connection consistency of each pipeline and the corresponding connector is guaranteed.

A traditional multi-rod connecting structure generally adopts a rigid fixed joint (such as a multi-way pipe joint), the relative poses of ports of the traditional multi-rod connecting structure are in a fixed geometrical relationship, and the traditional multi-rod connecting structure can only adapt to static structure construction and is difficult to adapt to scenes needing dynamic deformation. According to an existing flexible joint technology, the deformation capacity is achieved through an elastic material, but the following defects still exist: deformation concentration is insufficient, elastic deformation is distributed on the whole of a joint but not local, and consequently the axes of a plurality of rod pieces deviate from a preset rotation center; the motion range and rigidity are unbalanced, the motion range of rod pieces is limited, interference is generated when adjacent rod pieces are excessively close to each other, and the structural deformation flexibility is insufficient due to the fact that the overall elasticity modulus of a connector is too high; the multi-degree-of-freedom deformation capacity of the flexible multi-rod joint is achieved through the deformable part made of the continuous flexible component, and the flexible multi-rod joint can be used for building a frame structure and a connecting rod mechanism.

The application discloses a dexterous hand finger structure and a dexterous hand, wherein the dexterous hand finger structure comprises a base, a proximal phalanx, a middle phalanx, a distal phalanx, a first driving assembly and a second driving assembly. The proximal phalanx is hinged to the base through a first joint shaft, and the middle phalanx and the distal phalanx are sequentially hinged. The first driving assembly drives the proximal phalanx to bend through a first tendon. The second driving assembly drives the middle phalanx and the distal phalanx to bend through a second tendon. The first joint shaft is fixed to the base, and a side wall of the first joint shaft is provided with a through hole. The transmission path of the second tendon is configured as follows: the second tendon is led out from a second driver, sequentially passes through the through hole on the base and the first joint shaft, and is fixed to the distal phalanx after passing around the second joint shaft and the third joint shaft. The design makes the tendon path for driving the middle phalanx and the distal phalanx pass through the fixed joint shaft center, effectively blocks the path length interference of the tendon for the middle phalanx and the distal phalanx caused by the movement of the proximal phalanx, realizes the complete decoupling and independent precise control of the movement of each joint, and is simple and reliable in structure and suitable for precise operation scenes.

The invention discloses an action quality assessment method based on motion perception and double-flow space-time diagram convolution, relates to the field of action quality assessment, and solves the problems that an existing rehabilitation action quality assessment method is difficult to accurately model a synergistic effect between joints and a fixed joint grouping strategy is not flexible enough, so that the detail difference identification degree of a model on complex rehabilitation actions is insufficient, and the rehabilitation effect is poor. The invention provides a dynamic joint grouping strategy based on motion amplitude driving, designs a double-flow STGCN architecture, processes position and orientation information of joints respectively and then fuses the information, develops a two-stage self-attention module SADG, and models an inter-group time sequence mode and an intra-group space relation in stages. And multi-granularity feature interaction fusion is realized. The attention mechanism introduces the constraint guided by the motion amplitude, so that the attention weight has higher interpretability and physical significance.

An apparatus for evaluating motions of a joint is provided that is designed for determining stability of an anatomical joint. The apparatus includes a support frame, a fixation assembly for securing a first body segment of a joint, and a displacement assembly mounted to the support frame. The fixation assembly includes an axis of rotation moveable relative to the support frame. The displacement assembly includes a first frame pivotably mounted to the support frame and rotatably connected to a first end of the fixation assembly, and a second frame pivotably mounted to the support frame and rotatably connected to a second end of the fixation assembly. The apparatus can further include a pivot joint pivotably supporting the support frame whereby the support frame defines and is laterally pivotable within a support frame pivot plane.

This utility model relates to the field of infant and toddler products, and discloses a novel long-side lifting mechanism for a parent-child interactive crib. It includes a fixed joint, with a fixed joint cover fitted onto the outer wall of the fixed joint. The lifting assembly includes a locking slider, which is elastically connected to the inner wall of the top of the sliding joint via spring a. A protruding rod is fixedly connected to the inner wall of the bottom left side of the sliding joint, and an operation key is elastically connected to the bottom end of the protruding rod via spring b. A contact block is fixedly connected to the top of the outer wall of the operation key. A locking block is fixedly connected to the end of the locking slider away from spring a. In this utility model, the cooperation of spring a with the locking slider and locking block ensures that the crib side is securely locked in the positioning groove of the fixed support tube under normal conditions, effectively preventing accidental lifting of the crib side. Simultaneously, the design of the operation key requires manual effort to push it upwards, avoiding the risk of accidental unlocking by the infant.

The application discloses a kind of underwater clamping butt joint systems of remote control operation, butt joint device and butt joint method, it is related to seabed mining joint butt joint field;Butt joint system includes fixed joint and free joint, and the clamping butt joint device for clamping free joint is arranged on fixed joint, clamping butt joint device has centering clamping mechanism, and the axis of fixed joint coincides with the centering clamping center line of centering clamping mechanism;Centering clamping mechanism is connected with the lifting mechanism for driving centering clamp to make centering clamping action and lifting entire centering clamping mechanism, so that free joint is butt jointed with fixed joint.The purpose of the application is to use remote control unmanned submersible and the clamping butt joint device described above, the quick butt joint and disconnection of underwater pipe joint can be completed on sea surface, solve the problem that free joint of underwater mining slurry suction pipe is quickly clamped, aligned and connected to fixed joint.

The utility model discloses a multifunctional armrest of a dental chair, which comprises a fixed column, the inside of the fixed column is slidably connected with a lifting mechanism, one side of the fixed column is fixedly connected with a fixed joint, and the surface of the fixed joint is rotatably connected with an angle adjusting mechanism. According to the multifunctional armrest of the dental chair, through the arrangement of the angle adjusting mechanism and the lifting mechanism, when the multifunctional armrest is used, a lifting column can be pulled to slide in a fixed column to a proper position according to user requirements, then the lifting column is fixed through a threaded column, and then a hydraulic rod on one side is started; the hydraulic rod stretches out and draws back and drives the fixing column on the tail end fixing connector to rotate on the left side bearing, so that the angle of the armrest body on the fixing column is adjusted, the effect of adjusting the height and the angle of the armrest body is achieved, the flexibility and the convenience of the device in the using process are improved, and the individual requirements of various patients are met.

An upturning self-locking joint of a folding shower chair is formed by connecting a fixed joint, a rotating joint and a fixing piece, a limiting groove is formed in one end of the fixed joint, a rotating shaft hole is formed in one side of the limiting groove, a clamping groove is formed in the other end of the fixed joint, and a kidney-shaped hole corresponding to the rotating shaft hole of the fixed joint is formed in the rotating joint and has a certain inclination angle corresponding to the rotating joint. One end of the rotating joint is inserted into the limiting groove of the fixed joint, the fixing piece penetrates through the rotating shaft hole and the kidney-shaped hole to fix the fixed joint and the rotating joint, and a connecting plug is arranged at the other end of the rotating joint. The joint gravity self-sinking locking device can be used on a folding shower chair, realizes a joint gravity self-sinking locking function through the combination of the fixed joint and the rotary joint and the kidney-shaped hole with a certain inclination angle, and has the advantages of simple structure, low cost, safety and reliability.