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Publication numberUS1424264 A
Publication typeGrant
Publication dateAug 1, 1922
Filing dateDec 28, 1921
Priority dateDec 28, 1921
Publication numberUS 1424264 A, US 1424264A, US-A-1424264, US1424264 A, US1424264A
InventorsHamilton Shrodes George
Original AssigneeHamilton Shrodes George
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Artificial limb
US 1424264 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




Patented Aug. 1, 1922.


Application filed December 28, 1953-1.

To all'whom it may concern:

Be'it known that I, Gnoacn IIAMILTON Sianoons, a citizen of the United States, residing at Porterville, county of Tulare, and State of'California, have invented certain new and useful'lmprovements in Artificial Limbs; of "whichthe following; is declared to be a full,- clear, and exact description, enabling those skilled in theart to which it appertains to make anduse the same.

This invention relates to artificial limbs and more particularly to improvements therein, calculated to replace a natural limb and substitute therefor in a satisfactory manner. withoutthe introduction of. complicated'mechanism or the necessity of nu merous joints.

My invention consists in the scientific application of mechanism to closely imitate the muscles in a human limb and the various parts which comprise this invention are designed to operate separately and co-ordinately to allow for a certain amount of movement under pressure only and to return in all cases to its natural position.

My invention consists in a combination of wires and bands suitably positioned. and arranged to retain the predetermined shape and at the same time allow for the required amount of movement to enable the device to operate flexibly and in a manner closely approaching the act-ion of the human foot and limb. The wires which comprise my device are designed to represent the muscles of the human limb and their action is substantially represented in the following specification.

My invention eliminates oints and all complicated mechanism while possessing in a more or less restricted manner flexibility on the order of the movement of the human limb. The wires forming the rear or posterior of my device are adapted to take the place of the gastrocnemius and soleus muscles which form the tendo achillis or the heel cords in the human limb, and in the front or anterior surface of my device, the wires represent the tibialis anticus (or front and side of the leg.) The wires forming the anterior surface extend forward in the foot part in a manner to form artificial toes or substitutes therefor, and at a. point representing the approximate positions of the joints for toes each respective wire is coiled in acomplete circle and redirected on its former line to the extremity and then returns back upon itself in a manner forming an artificial limb specification of Letters Patent.

Patented Aug. 1, 1%2%.

Serial are. 525,500.

ertremity adapted to replace the flexor hallicis long us (or muscle extending to the great toe) and the flexor longus digatorum muscles.

The sole of. the foot is providedby the return'wires after they have been bent at the extremity of each artificial toe and each respective wire after forming said sole'forms a part of the heel and then forms the pos terior surface. as hereinbefore described.

Amechanical support is provided extendin ofrom the heel. around the upper part of' the arch and being attached to each respective wire and in principle adapted to replace the transcruoial ligament. j

' Further objects, advantages, and features of novelty are hereinafter set forth.

Referring to the drawings forming part of this specification:

Fig". 1 is a side elevation broken away of the human muscular arrangement in the foot.

Fig. 2 is a side elevation of my invention.

Fig. 3 is an enlarged elevation on the loop at each artificial toe joint.

F a is an enlarged elevation of the crimped portion in each wire, forming the posterior of my device.

Referring more particularly to the figures. represents the upper part of an artificial limb, following conventional lines and adapted preferablv to be laced in position by the lace 6. Thus upper part 5 is held in its proper position by means of two side support members 7, attached to 5 by means of rivets 8. The members 7 are fulcrumed by means of a pin 9 at 10 on either side of the band 11. 1212 are the wires forming the lower portion of my device, such wires being anchored respectively at 1.313 and being attached to a pin 14. at lef The wires formingthe anterior surface being attached to a metal arch 16 at 16 such wires then being looped at 20, beingbent back upon themselves at 21 in a manner to form artificial toes passing under said loop 20 at 20. All the said wires being respectively held in position by a band 19 adapted to prevent spreading when a weight is placed upon said wires. 18 represents the instep of the foot formed from said wires 12 after having formed the toes as just set forth. 1? is the heelv formed by said wires. 17 represents points of attachment to the metal band 16 adapted to maintain the respective wires in position. 15 repre.

sents a Wavy or corrugated portion positioned With each TBSPGCtlVQWlI'G just above' the heel in a manner to provide for a certain degree of a reciprocal movement in said artificial foot. 12 represents the Wires forming the posterior surface of my artificial limb such Wires being the same as those represented by 12, after the same have been bent as hereinbefore' set forth to form the various parts of the artificial limb.

I claim: a

1. An artificial limb consisting of conventional upper construction and in combination therewith a plurality of Wires forming the lower limb construction and foot, and a plurality of bands surrounding said Wires and attached thereto in a manner to maintain a predetermined shape, all substantially as set forth.

2. An artificial limb composed of Wires anchored at their ends respectively to a band beingsuitably spaced and maintained in position by'reinforcement as set forth, the Wires forming the anterior surface adapted toalso form the arch, each respective Wire having a loop positioned near the foot eX- tremity and adapted to form artificial toe joints, said Wires returning along the bottom replacing in an'artificial manner the fiexor hallacus longus muscle forming the heel, be-

ing crimped above the heel in a manner to represent and substitute for the tendo calcaneus cord and to then form the posterior surface of my artificial limb.

3. An artificial limb. construction comprising a conventional upper construction and in combination therewith a plurality of Wires forming the lower construction including the foot in which Wires form the anterior surface, the arch, artificial toes, with a loop in each respective Wire representing a toe joint, each of said looped Wires returning along thebottom of said artificial foot and forming the instep, the heel, and the posterior surface of said limb With corrugations positioned slightly above but in close proximity to said heel, substantially as hereinbefore set forth. v


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US5443528 *Nov 17, 1992Aug 22, 1995Allen; ScottCoil spring prosthetic foot
US5458656 *Dec 20, 1993Oct 17, 1995Flex-FootEnergy-storing prosthesis leg pylon vertical shock leg
US5486209 *Jul 1, 1994Jan 23, 1996Phillips; Van L.Foot prosthesis having auxiliary ankle construction
US5509938 *Jan 4, 1994Apr 23, 1996Phillips; Van L.Prosthetic foot incorporating adjustable bladder
US5514185 *Jan 21, 1994May 7, 1996Phillips; Van L.Split foot prosthesis
US5549714 *Jan 12, 1995Aug 27, 1996Phillips; Van L.Symes foot prosthesis
US5571213 *Aug 19, 1994Nov 5, 1996Allen; ScottProsthetic foot
US5593457 *Sep 22, 1995Jan 14, 1997Phillips; Van L.Foot prosthesis having auxiliary ankle construction
US5766265 *Jun 7, 1995Jun 16, 1998Phillips; Van L.Prosthetic foot having curved integral support
US5776205 *Jan 24, 1997Jul 7, 1998Phillips; Van L.Split foot prosthesis
US5976191 *Oct 8, 1996Nov 2, 1999Phillips; Van L.Foot prosthesis having curved forefoot
US6019795 *Jun 15, 1998Feb 1, 2000Phillips; Van L.Curved prosthesis
US6071313 *May 22, 1998Jun 6, 2000Phillips; Van L.Split foot prosthesis
US6406500Nov 2, 1999Jun 18, 2002Van L. PhillipsFoot prosthesis having curved forefoot
US6443995Dec 22, 2000Sep 3, 2002Barry W. TownsendProsthetic foot
US6478826Apr 9, 1999Nov 12, 2002Van L. PhillipsShock module prosthesis
US6511512Apr 24, 2000Jan 28, 2003Ossur HfActive shock module prosthesis
US6743260Jul 31, 2001Jun 1, 2004Barry W. TownsendProsthetic foot
US6887279Jan 28, 2003May 3, 2005össur hfActive shock module prosthesis
US6936074Mar 2, 2004Aug 30, 2005Barry W. TownsendProsthetic foot
US7108723Jun 10, 2004Sep 19, 2006Townsend Barry WProsthetic foot
US7169190May 2, 2005Jan 30, 2007Van L. PhillipsActive shock module prosthesis
US7815688 *Apr 19, 2006Oct 19, 2010Wilson Michael TLap joint for prosthetic foot
US20020087216 *Feb 25, 2002Jul 4, 2002Atkinson Stewart L.Prosthetic walking system
US20040068325 *Jun 24, 2003Apr 8, 2004Phillips Van L.Shock module prosthesis
US20040199265 *Mar 2, 2004Oct 7, 2004Townsend Barry W.Prosthetic foot
US20040225376 *Jun 10, 2004Nov 11, 2004Townsend Barry W.Prosthetic foot
US20050209707 *May 2, 2005Sep 22, 2005Phillips Van LActive shock module prosthesis
US20070250178 *Apr 19, 2006Oct 25, 2007Wilson Michael TLap Joint For Prosthetic Foot
U.S. Classification623/52
International ClassificationA61F2/60
Cooperative ClassificationA61F2/60
European ClassificationA61F2/60