摘要:
A dynamic prosthetic foot having multiple load points and an anterior/posterior pair of upper sections includes a sole and an upper member. A heel end of the upper member has a gradual ninety degree bend formed in so that it is normal to the sole. An elongate longitudinally-extending slot divides the heel end of the upper member into a lateral, anterior pylon support and a medial, posterior pylon support and further divides the upper member into a lateral upper section and a medial upper section. The lateral, anterior pylon support is thicker than the medial, posterior pylon support and the lateral upper member section is thicker than the medial upper section so that forces applied to the lateral, anterior and medial, posterior pylons are transferred to a greater extent to the medial, posterior pylon. In a second embodiment, elongate pylons supplant the pylon supports.
摘要:
A method of using an artificial limb includes mounting an artificial limb to a body part, applying a force to the artificial limb to deflect the artificial limb from a first position in a first direction, and removing the force, whereby the artificial limb moves to the first position. The artificial limb includes a mounting end configured to be mounted to a body part and one or more superelastic members. The superelastic members may be made of Nitinol.
摘要:
An alignment device (10) for a prosthetic limb (12) to provide angular movement of the prosthetic limb (12) in an anterior-posterior plane. The alignment device (10) includes a mounting mechanism (24) supported by a prosthetic socket (28), a prosthetic limb (12) operatively connected to the mounting mechanism (24), and an extendable and retractable positioning mechanism (84) operatively connected to the mounting mechanism (24) and the prosthetic limb (12). The prosthetic limb (12) is adapted to move angularly in the anterior-posterior plane upon extension or retraction of the positioning mechanism (84). A hinge connection (606, 610) may be provided between the prosthetic limb (12) and the mounting mechanism (602) to permit the prosthetic limb (12) to rotate about a hinge axis extending through the hinge connection (606, 610). Methods for aligning a prosthetic limb are also disclosed.
摘要:
A prosthetic foot includes an adapter element securable to a residual limb, a foot plate having a heel portion and a toe portion along the length thereof, at least one toe spring connected between the adapter element and the toe portion of the foot plate, and a heel spring connected between the adapter element and the heel portion. The heel spring may be a leaf spring or a tube type shock absorber. The concave side of the leaf spring exhibits a plurality of transverse ribs. Alternatively, a tubular pylon may have a collar mounted thereon for movement along the length of the pylon. A toe spring and a heel spring extend from the collar to form toe and heel portions of the prosthetic foot. A further heel spring is connected between the heel portion and another end of the pylon, and a non-extensible band extends between the heel portion and the collar. As another alternative, a tubular pylon has one end securable to a residual limb, and a collar is mounted to the pylon for movement along the length of the pylon. At least one toe spring is connected between the collar and the toe portion of a foot plate, while a heel spring is connected between the heel portion of the foot plate and another end of the pylon.
摘要:
Disclosed herewith is a prosthetic foot. The prosthetic foot is to be connected to a pylon that is utilized for the substitution of the shinbone of an amputee. The prosthetic foot includes an ankle portion to be secured to the pylon. A plurality of curved portions are extended from one end of the ankle portion. A sole portion is extended from one end of the curved portions. The ankle portion, the curved portions and the sole portion form a single integrated plate spring structure.
摘要:
An apparatus for providing a person with stimuli corresponding to an external operation on a sensor of a prosthetic device used in conjunction with a prosthetic or sensory impaired limb. A lower limb prosthesis includes sensors located in a prosthetic foot, contacts in the socket producing stimuli felt on the residual limb, and an electronic unit to adjust and control the magnitude of the stimuli. The sensors are either inductance-based or resistance-based. An upper limb prosthesis comprises a pressure sensor located in the thumb of a prosthetic hand, a vibrating motor generating sensations felt in the residual limb and an electronic circuit to control the vibrating motor and to adjust the intensity of the vibrations. An apparatus for a sensory impaired limb providing a sense of feel to a remote but unimpaired body part are constructed in a similar manner.
摘要:
The present invention provides a prosthetic foot that provides both energy storage capabilities and stability. The prosthetic foot of the present invention provides medial-lateral rotation as compared to the slight tilting or rocking in the medial-lateral plane of the prior art devices. Furthermore, the prosthetic foot of the present invention provides a true hinge in the ankle joint region that may be adapted so that the degree of rotation is controlled.
摘要:
A prosthetic device is provided having a proximal end portion adapted to be secured to an amputee and a distal foot structure. The improvement comprises a pivoting ankle joint disposed between the proximal end portion and the foot structure. This ankle joint includes a matable socket and head assembly interconnecting the proximal end portion and the foot structure for relative movement about a pivot axis between first and second positions. A spring element operates to resiliently bias the socket and head into the first pivot position. A load-sensitive locking mechanism operates, upon the existence of a triggering load which exceeds a predetermined threshold magnitude, to cause the socket and head assembly to lock at a selected locking position, thereby preventing relative pivotal movement. In the absence of the triggering load, relative pivotal movement of the socket and head assembly between the first and second positions is permitted.
摘要:
Provided herein is a simple, inexpensive prosthetic foot incorporating an ankle block with spring inserts. The ankle block is formed of compressible material having desired compliance and energy return characteristics. The ankle block is sandwiched between a foot element and an ankle element. One or more spring inserts are embedded inside the ankle block to increase the rigidity of the prosthetic foot and to improve the degree of energy storage and return. The shape of the spring inserts is preferably one that supports compression during relative angular rotation of the ankle plate and foot plate elements, such as during toe and heel roll, and also vertical compression, such as in response to vertical shock loads.
摘要:
A prosthetic foot assembly, said assembly includes an ankle member, a heel member pivotally connected to the ankle member, an elongate metatarsal-toe member having a rear portion underlying a forward portion of the heel member and projecting forwardly from the heel member. The metatarsal-toe member being pivotally connected to the heel member. A first compressible element is engaged between a portion of the ankle member and a portion of the heel member and a second compressible element having first and second substantially circular bearing surfaces engaged between a portion of the heel member and a portion of the metatarsal-toe member to resist upward pivotal movement of a forward end of the metatarsal-toe member relative to the heel member. A portion of the compressible element spaced apart from one of the bearing surfaces has a smaller diameter than the diameter of at least one of the first and second bearing surfaces. Also disclosed is a prosthetic foot assembly incorporating noise abatement features including surface treatments and modified compressible elements or pads.