63 results about "Prosthetic feet" patented technology

Embodiments can relate to a prosthetic foot system. The system can include an ankle joint housing co-locating a rotation sub-assembly, a torsional shock absorbing sub-assembly, and a vertical shock absorbing sub-assembly. The system can include a foot component attached to the ankle joint housing. The system can be configured as a co-designed architecture to functionally integrate at least two functions of: (i) torsional shock absorption, (ii) multi-axial motion with stiffness modulation in single gait cycle, (iii) active dorsiflexion, and (iv) vertical shock absorption by causing the at least two functions to operate in concert.

Disclosed are prosthetic systems comprising a powered knee prosthesis and a volitional controller configured to provide control of the prosthesis to the user. The prosthetic system may be configured to enable a user to walk on smooth and / or uneven terrain and to ascend and / or descend stairs. The volitional controller may be configured in a contact state when the prosthesis is in contact with a ground surface and a no contact state when the prosthesis is lifted from the ground surface. When in the contact state, the controller may output a knee torque signal for controlling the powered knee of the prosthesis. The knee torque signal may be based on a target knee torque determined by the knee orientation and the torque measured at the ankle of a prosthetic foot. When in the no contact state, the controller may output a knee torque signal based on a desired knee position.

A prosthetic foot includes a base spring, a top spring assembly, a connector assembly, and a heel cushion. The top spring assembly includes first and second spring members, and first and second bond connections. The second spring member extends parallel with and spaced apart from the first spring member. The first bond connection is between distal ends of the first and second spring members, and the second bond connection is between a distal end of the second spring member and a top surface of the base spring. The top spring assembly has a first portion arranged horizontally, and a second portion arranged vertically. The connector is connected to a proximal end of the top spring assembly to connect the prosthetic foot to a lower limb prosthesis. The heel cushion is mounted to the base spring at a location spaced forward of a heel end of the base spring.

A traction system for a mobile support device, such as a prosthetic foot piece or a crutch, includes a chassis, a latch assembly, and a strap. The chassis is couplable to a distal end of the mobile support device to extend underneath a bottom side of the mobile support device and the latch assembly. The latch assembly includes a front catch and a rear catch, both of which are securable to a top side of the mobile support device, the front catch being closer to the distal end of the mobile support device than the rear catch, and a lever having a front end and a rear end, the front end being releasably latchable to the front catch, the rear end being releasably latchable to the rear catch when the lever is pivoted about the front end of the latch. The strap is secured to the lever and the chassis.

The utility model discloses a dual-purpose artificial limb for sports and life, which comprises a vertically arranged vertical elastic support plate, the bottom end of the vertical elastic support plate is fixedly connected with a C-shaped elastic plate, the other end of the C-shaped elastic plate is transversely and fixedly connected with an upper foot plate, and the vertical elastic support plate, the C-shaped elastic plate and the upper foot plate form an L-shaped artificial limb. The middle part of the lower surface of the upper foot plate is fixedly connected with a lower foot plate which extends backwards. According to the sports and living dual-purpose artificial limb, the vertical elastic supporting plate, the C-shaped elastic plate and the upper foot plate are arranged, and the vertical elastic supporting plate, the C-shaped elastic plate and the upper foot plate of the device are integrally formed and form an L-shaped artificial limb structure, so that the sports artificial limb not only facilitates an amputee to participate in various sports, but also can be used for daily life; a customer is helped to achieve the hobbies of instant sports, the trouble that the customer wears one leg and also wears one leg is avoided, convenience is achieved, meanwhile, unattractiveness is improved, and life confidence is improved.

Methods of fabricating a compliant prosthetic foot are provided. A method includes optimizing a set of determinants defining a shape of a compliant prosthetic foot. The shape comprises a keel curve, a heel curve, and a forefoot curve, each of the heel curve and the forefoot curve at least partially defined as an offset curve with respect to a representation of an arched ground-facing surface of the compliant prosthetic foot. The optimizing includes minimizing a lower leg trajectory error associated with the set of determinants relative to a target kinematic data set. The method further includes fabricating the compliant prosthetic foot in conformance with the optimized set of determinants.

This invention relates to a fabric performance testing device for sock production, belonging to the field of sock production technology. The device includes a testing chamber with a rotating cylinder rotatably mounted at the center of its inner side. A servo motor for driving the rotating cylinder is fixedly mounted on one side of the testing chamber. Several telescopic mechanisms are fixedly connected to the outer side of the rotating cylinder, and a prosthetic foot model is mounted at one end of each telescopic mechanism. Several pilling mechanisms that cooperate with the prosthetic foot models are mounted on the inner wall of the testing chamber. This invention, through the pilling mechanisms, can simulate the wear and tear on socks during footwear exercise. Furthermore, because the prosthetic foot model is made of silicone, it can more realistically simulate the wear and tear between a person's foot and socks, making the pilling and fuzzing test of the socks more realistic and simulating the wear and tear of socks during wear more accurately.

The invention discloses a two-degree-of-freedom dynamic compensation below-knee prosthesis and a multi-mode control system and method, and belongs to the technical field of artificial below-knee prostheses. The two-degree-of-freedom dynamic compensation below-knee prosthesis comprises a prosthesis foot plate, a pitching joint, an inward and outward turning joint and a receiving cavity; the pitching joint is connected with the limb foot plate through the pitching support and can drive the limb foot plate to complete pitching motion around the bottom support. The inward and outward turning joint is connected with the pitching joint through the upper support and can control the shank support to achieve inward and outward turning movement around the inward and outward turning shaft. An induction control system is arranged to monitor inertia signals when a wearer walks in real time and receive pressure changes in the cavity walking process, sensor data are analyzed, normal gait motion characteristics are combined, the motion intention of the wearer is recognized, and an artificial limb system control strategy is adjusted; the control strategy is fed back and adjusted in real time according to the gait recognition result so as to meet the requirements for damping change and ankle joint angle change of the artificial limb system in different movement modes.

The application discloses a passive bionic ankle-foot prosthesis, which comprises a shank connecting rod, a shank connector, a shank fixing tube, a sole fixing connecting device, a shank sliding block, a damper, an elastic element, a prosthetic foot plate and an energy recovery device. The shank connecting rod is hinged with the sole fixing connecting device to form a prosthetic ankle joint. The damper and the elastic element are connected in parallel. When the ankle joint rotates, the damper provides damping for adjusting the bending and stretching speed of the ankle joint, and the elastic element provides support and pushing torque in the states of plantar flexion, dorsal flexion and pushing. The prosthetic foot plate is used for reducing the impact force during the contact between the prosthesis and the ground, the sole fixing connecting device is connected with the prosthetic foot plate, and the energy recovery device is used for converting part of the elastic deformation of the prosthetic foot plate and the elastic element into electric energy. The application can well imitate the biomechanical characteristics of the human ankle joint, has flexibility and natural feeling when walking, and improves the stability and efficiency of walking.

The utility model relates to the technical field of prosthetic foot soles, and particularly discloses a carbon fiber all-terrain energy storage prosthetic foot sole, downward pressure is shared by a V-shaped connecting piece and a carbon fiber energy storage plate, the carbon fiber energy storage plate is of an arch structure, the pressure can be uniformly shared in the moving process of a stress point, breakage caused by pressure concentration at one point is avoided, and the service life of the carbon fiber all-terrain energy storage prosthetic foot sole is prolonged. When pressure is applied to the carbon fiber energy storage plate, the carbon fiber energy storage plate can deform to a certain degree, energy can be stored while the damping effect is achieved, energy stored by the carbon fiber energy storage plate is released when the foot is lifted, the carbon fiber panel is bent when the forefoot exerts force, energy can be stored when the carbon fiber panel is bent, and the elastic force of the carbon fiber panel is released when the user advances. The foot-lifting assisting device can assist in force application to push the artificial limb to move forwards, pressure generated when the artificial limb falls to the ground is stored through the carbon fiber panel and the carbon fiber energy storage plate, the stored energy is released when the foot is lifted, foot lifting assistance is completed, and the effects of foot-falling damping, energy storage, foot-lifting assisting force application and convenient walking are achieved.

A powered ankle / foot prosthetic with a closed-loop, neural, bi-directional intuitive control system can be utilized for transtibial amputees with traditional socket prosthetics or for those with osseintegrated prosthetics. Control (efferent) signals from the user to the prosthesis actuator are captured from EMG of residual gastrocnemius and tibialis anterior muscles. Sensory feedback (afferent) information about contact of the prosthetic foot with the ground obtained from a pressure sensor located on the foot bottom is reported to the user's nervous system by electrical stimulation of the residual trans-tibial and sural nerves. Surgically implanted or skin surface electrodes placed on / within the residual ankle flexor and extensor muscles relay recorded EMG to the control electronics mounted on the linear actuator. The control electronics are designed to generate a more natural powered plantarflexion of the ankle joint based on the EMG data, pressure sensor, and other inertial sensors.

A water-tight foot cover assembly is described. In one example, the water-tight foot cover includes a foot cover, and a seal. The foot cover can have a pattern on a bottom surface to increase friction between the water-tight foot cover and a walking surface. The seal can include one or more one-way valves and provide a water-tight seal so that water, dirt, or other debris cannot enter an inner cavity of the foot cover. The water-tight foot cover assembly can include an inner shell that provides structural support to the foot cover. The foot cover can be pressurized or vacuumized in order to change structural properties of the foot cover.

The invention relates to a prosthetic foot insert (10), comprising a proximal fastening device (20) for fastening the prosthetic foot insert (10) to a proximal part (2), a holding part (30) which is arranged distally with respect to the fastening device (20) and is coupled to the fastening device (20), an elastic heel element (50) which is arranged on the holding part (30), and a main spring (40), the main spring (40) extends into the forefoot region and is coupled to a retaining part (30), the main spring (40) is supported on a heel element (50) between a proximal heel part (51) and a distal heel part (52), the retaining part (30) has a projection (34) which projects beyond the fixing element in the direction of the forefoot region and which is supported on the main spring, and the retaining part (30) is configured so that the main spring (40) is supported by the retaining part (30) in the direction of the forefoot region. And the main spring interacts with the distal heel part (52) when the forefoot is loaded.

The invention relates to a prosthetic foot insert (10) having a. A proximal fastening device (20) for fastening the prosthetic foot insert (10) to a proximal part (2) or a patient, b. A holder (30) which is arranged distally with respect to the fastening device (20) and which is connected to the fastening device (20), and c. A main spring (40) which extends into a forefoot region (11) and is coupled to the holder (30), the retaining part (30) is mounted on the main spring (40) in a pivotable manner in a sagittal plane, a rear limiting element (92) is arranged between the main spring (40) and the retaining part (30), said rear limiting element limiting a displacement of the retaining part (30) away from the main spring (40), and the fastening device (20) is mounted on the retaining part (30) in an articulated and longitudinally displaceable manner.

The present invention relates to a prosthetic foot insert (10) having a proximal fixation device (20) for securing the proximal foot insert (10) to a proximal component (2), a retainer (30) disposed distally relative to and coupled to the fixation device (20), an elastic heel element (50), and a main spring (40) disposed on the retainer (30), the main spring extending into the forefoot region and coupled to the retainer (30), wherein the main spring (40) is supported on the heel element (50) between the proximal heel component (51) and the distal heel component (52).

The utility model discloses a multi-axis structure left-right toe-separation heel height adjustable prosthetic foot sole, which comprises a full-length foot sole plate, the upper surface of the full-length foot sole plate is fixedly connected with a middle plate, the upper surface of the middle plate is fixedly connected with an upper plate, the rear end of the middle plate is rotatably connected with a connecting cylinder, the inner part of the connecting cylinder is in threaded connection with a threaded rod, and the threaded rod is in threaded connection with the middle plate. The top end of the surface of the threaded rod is fixedly connected with a twisting handle, and the top end of the threaded rod is rotationally connected with a connecting block. According to the multi-shaft structure left-right toe separation heel height adjustable artificial limb foot plate, in the using process, a worker twists a twisting handle, a threaded rod can be driven to ascend and descend, then the height of a foot root can be adjusted, the equivalent height of a heel can be adjusted conveniently after a shoe is replaced, the situation that an artificial limb leans forwards and backwards is avoided, and then the wearing comfort is improved; and the safety in the movement process is improved.

A prosthetic foot includes a spring component and a sole component. The spring component comprises two or more stacked beam elements, each beam element including, along the length of the respective beam element, a first portion and a second portion, and the second portion of the beam element includes an extent with a length-varying width. The respective beam elements are fixed to each other and to the sole component proximate the heel portion of the sole component or the toe portion of the sole component at the first portions of the respective beam elements to form a fixed end of a cantilevered composite beam. The second portions of the respective beam elements are laterally movable with respect to each other when the spring component deflects.

The application provides a novel intelligent bionic hydraulic carbon fiber artificial foot, and relates to the field of artificial feet, which comprises a foot plate, a connecting seat, an ankle joint shell, a strain gauge and an electro-hydraulic damping cylinder. The electro-hydraulic damping cylinder comprises a cylinder body and a throttle valve assembly, and the throttle valve assembly comprises a telescopic rod, a throttle valve and a support rod which are connected with each other from top to bottom. The throttle valve comprises a valve body, a throttle valve sleeve is fixed to the bottom of the valve body along the axial direction of the cylinder body, a through hole is formed in the throttle valve sleeve along the axial direction of the cylinder body, a throttle valve core which can move up and down is inserted into the through hole, and a throttle port is formed in the side wall of the throttle valve sleeve. The coil magnet drives the throttle valve core to move in the through hole according to the electromagnetic force generated by the coil magnet, so as to change the size of the area of the throttle valve core blocking the throttle port. A displacement sensor is arranged on the valve body and is used for sensing the displacement of the throttle valve core relative to the valve body along the up and down movement of the through hole. A control device is arranged on the outer wall of the cylinder body and comprises an inertia sensor and a microprocessor. According to the artificial foot provided by the application, the structure is simple, and the corresponding optimal damping can be actively adjusted.

A mounting bracket for a prosthetic foot configured to attach to a residual limb, comprising an upper member, a lower member and compression torsion joint. The upper member comprises an upper flange, a mating post, and mounting portion configured to attach to the residual limb. The lower member comprises a mating portion, a lower flange, and a mounting portion configured to attach to the prosthetic foot. The compression torsion joint couples the upper member to the lower member and is configured to limit the vertical movement and torsional movement of the upper member with respect to the lower member.

A prosthetic foot can include an attachment member, at least one first brace, at least one first flexible member, an unpowered actuator, at least one second brace, and at least one second flexible member. The attachment member can include a connector configured to connect the attachment member to a user or another prosthetic device. The at least one first brace can mount to the attachment member and the at least one first flexible member can connect to the attachment member by the at least one first brace such that a force between the ground and the attachment member can be supported by the at least one first flexible member. The unpowered actuator can mount to the attachment member and the at least one second brace can mounted to the actuator. The at least one second flexible member can connect to the attachment member by the at least one second brace such that a force between the ground and the attachment member can be supported by the at least one second flexible member.

The present disclosure pertains to prosthetic systems (100, 300) that encompass a prosthetic foot (104) and a pump mechanism (102) devised to eliminate fluid between a prosthetic socket and a residual limb or liner, thereby sustaining a hypobaric pressure chamber within a cavity of the prosthetic socket. The pump mechanism may incorporate a fluid chamber (134) established between a membrane (126) and the housing (108) of the pump mechanism. Forces resulting from the user's gait during the compression and expansion of the prosthetic foot can be transmitted to an L-brace, which is configured to actuate the membrane of the pump mechanism, facilitating the influx and efflux of fluid into and from the fluid chamber.

The utility model discloses a split type artificial foot of easy drainage in the technical field of artificial limb, the device has increased the inner bolster plate of artificial foot cover and carbon fiber, and the artificial foot cover can be tightly clamped with the inner bolster plate, forms integral force structure, and increases various different clamping structures in the artificial foot cover, makes the stable assembly of artificial foot cover and inner bolster plate, and the inner bolster plate of carbon fiber is sheet structure, has higher structural strength and small weight, is convenient for assembly, and the sheet arc structure still has deformation buffer action from taking, can effectively reduce the impact force of ground to leg, and the ring groove of drainage is arranged in the artificial foot cover, and the matched flow guide groove and drain hole, thereby can quickly drain the accumulated water of the accidental entry inside the artificial foot cover, effectively links and reduces the mildew and stink condition of the damp inside the artificial foot cover, and because of being equipped with the flow guide channel, can not disassemble the device, also can conveniently dry the inside space of artificial foot cover.

The present application belongs to the technical field of artificial artificial foot plate manufacturing and electronic technology, and relates to a bionic artificial foot plate design with self-powered motion monitoring, comprising an elastic foot plate, a sole reinforcing rib plate, a transducer, an energy management unit, an MCU microprocessor, and a receiving cavity connector. The elastic foot plate of the present application can reduce the impact force during the process of foot bottom touching by using elastic deformation, and at the same time, the energy recovery is released to push the human body forward in the late standing stage. The sole reinforcing rib plate is used to improve the stiffness of the elastic foot plate in the vertical direction, while the elastic foot plate deforms in the horizontal direction. The transducer converts the mechanical deformation part of the foot plate into electrical energy, and by analyzing and processing the output circuit and voltage of the transducer, the motion mode and motion state of the artificial foot plate can be detected. In addition, the recovered electrical energy can power electronic devices such as wireless communication modules, GPS, pedometers, etc., so as to obtain the motion trajectory of the artificial limb and other information, which can be wirelessly transmitted to smart devices such as mobile phones for display and analysis.

A prosthetic foot having a base spring having a toe end portion and a heel end portion, and a top spring assembly. The top spring assembly includes a first spring member having a distal end and a proximal end, a second spring member spaced apart from the first spring member along substantially an entire length of the first spring member, the second spring member having a distal end and a proximal end, a first bond connection provided between the distal ends of the first and second spring members, a second bond connection provided between the distal end of the second spring member and a top surface of the base spring in a forefoot portion of the base spring, and a spring connector extending through at least a first hole formed in the base spring, the second bond connection and the second spring member.

The invention relates to a prosthetic foot component comprising a proximal fastening system for securing the prosthetic foot component to a proximal component, a retaining portion situated distally relative to the fastening system and coupled to the latter, an elastic heel element provided on the retaining portion, and a main spring extending in a front-foot region and coupled to the retaining portion, wherein the main spring is mounted in the heel element between a proximal heel component and a distal heel component.

A prosthetic foot shell cover includes a stirrup, a top portion and an elastic rim. The prosthetic foot shell cover is for used with a prosthetic foot assembly including a foot shell (having heel, an arch and a back), a prosthetic foot and ankle, and a pylon operably attached to the foot shell. The stirrup is configured to go under the foot shell. The top portion is integrally connected to the stirrup and the top portion is configured to extend over the arch and around the back of the prosthetic foot. The elastic rim is integrally attached to the top portion and the elastic rim is configured to engage the pylon of the prosthetic foot. The stirrup, top portion and elastic rim are a unitary construction of resiliently deformable material. Two seals are required to achieve water resistance or water tightness, one at the foot shell and one at the pylon or ankle component.

The application discloses a waterproof light-weight artificial foot in the technical field of artificial limbs, which comprises an artificial foot outer layer, a foot core and a static ankle connecting disc, the artificial foot outer layer is wrapped outside the foot core, the device is provided with a keel and a weight-reducing groove on the foot core, and the two cooperate with each other, that is, the structural support strength of the foot core is effectively ensured, the self-weight of the artificial foot is effectively reduced, the residual limb load of a user is further reduced, the exercise amount of a wearer during walking is reduced, and the artificial foot is more labor-saving for a disabled person; the static ankle connecting disc is tightly covered on the top of the foot core and the artificial foot outer layer, the foot core is effectively waterproofed, the device is further provided with a central water groove and a side water groove, water on the top of the foot core can be drained away, water vapor can be volatilized, water accumulation between the foot core and the static ankle connecting disc is effectively avoided, the static ankle connecting disc and the butt joint bolt are effectively prevented from rusting, the overall structure of the foot core can be kept dry, the service life of the whole artificial limb is prolonged, and the artificial foot is more convenient to maintain and clean.

The invention relates to a prosthetic device for a lower extremity having a prosthetic knee joint having: an upper part, on which a proximal prosthetic component is arranged; a lower part, which is connected to the upper part so as to be pivotable about a knee joint axis; and a distal prosthetic component, on which a prosthetic foot is formed or can be attached, wherein the distal prosthetic component is mounted so as to be displaceable in the direction of the knee joint axis by means of an axial force acting in the longitudinal extent of the distal prosthetic component and a force transmission device is associated with the knee joint, which force transmission device, during the standing phase, converts a displacement or length change of the distal prosthetic component in the direction of the knee joint axis into a flexion moment about the knee joint axis.

The invention relates to a prosthetic foot insert (10) having a. proximal fixation means (20) for fixing the prosthetic foot insert (10) on a proximal component (2) or on a patient, b. a holder (30) arranged distally relative to the fixation means (20) and connected to the fixation means (20), and c. a main spring (40) which extends into a forefoot region (11) and is coupled with the holder (30), wherein the holder (30) is pivotably supported on the main spring (40) in a sagittal plane, wherein a rear limiting element (92) is arranged between the main spring (40) and the holder (30), which limits displacement of the holder (30) away from the main spring (40).