Abstract: A rotary motion generator for helping a patient to relearn walking is disclosed. The knee exoskeleton device includes a rotary shaft, a moveable lever, and a first elastomeric structure. The rotary shaft is switchable between a one-way rotation mode and a two-way rotation mode in a sagittal plane, and locking the joint position by the one-way rotation mode. The moveable lever protrudes from an outer periphery of the rotary shaft perpendicularly for rotating the rotary shaft. The first elastomeric structure is pneumatically controlled for engaging the moveable lever for generating an output torque and producing the relative rotatory movement of a lower arm with respect to an upper arm. The rotary shaft further comprises a pawl, a second elastomeric structure for projecting or retracting the pawl, and a rotation locking mechanism that switches the rotary shaft between the one-way rotation mode and the two-way rotation mode.

Abstract: An ankle exoskeleton device for helping a patient to relearn walking by themselves is disclosed. The ankle exoskeleton device includes a leg brace, an insole, and a rotary actuator. The rotary actuator is pneumatically driven to cause rotation of the insole with respect to the leg brace about a central axis. The rotary actuator comprises first and second elastomeric structure, a rotary shaft rotatable about the central axis to generate an output torque for producing a relative rotatory movement of the insole, and a lever. the rotary shaft is adapted to be moved by controlling two opposing fluid pressures inside the rotary actuator. The first elastomeric structure is extendable to push the lever in a clockwise direction, and the second elastomeric structure is extendable to push the lever in an anticlockwise direction, thereby the first and second elastomeric structures are arranged to control the rotary shaft.

Abstract: A catheter assembly may include a catheter adapter, which may include a distal end, a proximal end, a lumen extending through the distal end of the catheter adapter and the proximal end of the catheter adapter, and a side port disposed between the distal end of the catheter adapter and the proximal end of the catheter adapter. The catheter assembly may include a catheter extending distally from the distal end of the catheter adapter. The catheter assembly may include a valve disposed within the lumen. The catheter assembly may include a retainer element configured to secure the annular valve within the lumen. The retainer element may be disposed within the lumen proximal to a proximal end of the annular valve.