Патент USA US2127566код для вставки
Aug. -23, 1938. N, MALLoY-BREHUNOFF ' ì Filled March 22, 1955 _ l@4 68 2 sheets-sheet 1 y F 5737484 .'j > f ' ‘ 2,127,566 ARTIFICIAL LIMB „ e4.MM; _ BY _á¿fé ì I l MWÓRNELS Aug. 23,193.8.- ` N. MALLoY-BREHUNOFF 2,127,556 ARTIFICIAL LIMB Filed MàI‘Ch 2.2,v 1935 - ~ 2 Sheets-Sheei 2 M ATTQRNEYS. Patented Aug. 23, 'i ,12,127.566 UNITED- vs'|¿î;¢\."rl~.=:s PATENT OFFICE 8 Claims. - (ci. 3_2) ' ‘ This invention relates to new and useful im provements in artificial limbs and has for an ob ject to provide‘an artificial limb including cer the opposite sides of the thigh I0 as at I'Ifand such plates extend toward tli'e lower end of the I thigh and adjacent theirupper ends are pro tain adjustable connections whereby the limb may ~ vided with a set of vertically lspaced tapped open lbe adjusted to give the greatest comfort to the ings |8 and toward its lowerend each plate is pro It is also an object to provide an artiiicial limb that willpermit walking and using of the limb to better eifect than such limbs now available. 10 `'I'he-v invention also includes improvements in the harness for »attaching or securing an arti ficial limb to a-wearer, improved connections at the knee joints of `artiiicial limbs, and improved foot and calf connections for artificial limbs. Other objects and advantages will become ap parent _from aconsideration of the> following de tailed description takenl in connection- with the accompanying drawings wherein satisfactory em 20 The knee joint between the thigh It and cap _ || is generally designated 20 -and includes upper parts 2| and lower parts 22.` At theirl upper ends the parts 2| are provided with headg-like enlarge 10 ments 23 whereby the parts are somewhat 'I'. shaped and such head-like portions are each pro vided with a series of horizontally spaced open ings 24. In spaced relation to the heads 23 the parts 2| are each provided with a series of ver 15 ticallyspaced openings` or perforations 25. Bolts 26 and A2`| are passed through selected ones of the upper and lower sets of openings 24 and 25 bodiments'of the‘ invention are shown. However, respectively to secure the upper knee joint parts it will be understood that the invention is not, 2 | vto the 'mounting‘and adjustment plates >I6 and limited to the details disclosed but includes all ' through such plates to the thigh I0. 'I'he bolt 26 such variations and modiilcations as fall within is passed through a selected one oi' the openings >the spirit of the invention and the `scope of the 24 in the part >2| and is threaded into the se appended 25 claims.- In the drawings: - A , ` , ' - . ’ - ` lected opening I8 in the plate Ii. g Fig. 1 is a front elevational view of an artiiicial limb adapted to be used when 4the wearer’s leg vhas been amputated above the knee joint, parts 30 5 vided witvh a tapped opening I9'.l being broken away in the view to show features of construction; 1 '. ' , Fig. _2 is aïside elevational-view of the limb of Fig. 1 with parts broken away; -ì - Fig. 3 is an enlarged detail view showing the construction at the knee jointand particularly 35 showing a locking means employed; ' Fig. 3a_ is a detail side view -of a catch for ren dering the lock ineffective; " , ' Flg.`3b is‘a top plan view thereof ; Fig.- 4 is a top plan _view ofthe foot of Figs. 1 and 2; y . » _ _ . ' - When _the bolt 20 is in position it determines which of the'openings 28 in the part 2| the bolt 21 is to be passed through in order to thread into the opening Il of the plate Il. lThe bolt _2'|_may beilrst screwed into place after which the thigh _ ' ||| may be adjusted and then the bolt 26 screwed so into place. By the dotted line positions of the thighv Il in Flg.-'2 it is .shown that the thigh may have various positions of adjustment 'relative to` the upper parts 2| of the knee'joint. The thigh . may be adjusted vertically-and it may also be 35 tilted more or less so as to be given that relation to the calf I |v which is most comfortable to the wearer. ` , . » The lower kneel joint parts 22 are disposed against the inner surfaces of the'cali' || at dia metrically opposite sides thereof and are secured in place by screws 2l. Such parts extend above Fig. 5 is a front. elevational view showing the harness vemployed for securing either the limb of Figs.'1 and 2 to the wearer; and - the upper end of the calf and their upper end Fig. 6 is a rear elevational view showing the portions 2l are bifurcated. The upper parts 2| Í harness in’ use: » 1 ` ' l oi' the knee joint extend below the lower end 45 _ Referring in detail to the drawings, and. at-first of the thigh> I0 and are received in the bifurcated particularly to Figs. 1 through 4, the artificial , portions 28 of the part 22 and such parts 2| and limb of such iigures as yshown includes a thigh4 22 are.hingedly connected by pin bushings 20 portion I0, a calf |I,»and'a¿footv I2. This-limb into which are threaded the securing screw 2|. 50 is for use where theleg of the wearer hasbeen ' ' With the described construction it will be appa amputated above, the kneef'joint and the thigh- - rent that the thigh I! and calf || are hingedly I0 is a socket-like construction including a metal >connected and that the thigh may be adjusted shell I 3, a felt pad I4 against the inner side of said shell vand a leather innerv lining I5. Joint relative to the calf s_o that the thighl will occupy that position which will give the most comfort holders andladjustment plates I6 are riveted to f to the wearer, and also'the lower part of the leg 55 2 2,127,566 ' may be swung backwardly when the wearer sits down, or at any time desired. At the front side of the artiiicial limb the space between the lower end of the thigh I0 and the upper end'of the calf || is closed by a knee cap plate 32. Screws 33 secure the upper end portion of the plate 32 against the inner surface of the lower end portion of the thigh and such plate ex tends for a substantial distance into the calf ||. This knee cap plate is formed of fiexiblespring metal as for example bronze and when the arti ñcial limb is bent the lower portion of the plate slides along the inner surface of the cali || and the plate bends and maintains the space between the front portions of the thigh and calf closed, iiexing and functioning in the manner of a natural knee cap. y member 44. y At such times the cylinder ?will be positioned as shown by the dotted line in Fig. 2. To again straighten the leg the wearer may shake or snap it to have the calf I | assume a straight position with respect to the thigh Il), and when this is done the lower endof the cylinder is moved backq onto the horizontal arm of the bracket 41 by means of a spring 52 which nor- ' mally acts to maintain the cylinder in the last described position. 10 Spring 52 as shown is formed from a single ‘length of wire bent intermediate its ends to pro vide a pair of armsand a connecting portion 53 and the spring is arranged with this connecting portion bearing against the forward lside of the 15 cylinder 44. Intermediate their ends the arms of the spring are bent to provide coils 54 passed over the extending ends of the bushing 40 and Í then'the free ends 55 of the varms of the spring bear against the ears 31. A bolt having a rela 20 tween the thigh i6v and the calf || when the tively large head 56 is passed through the bush wearer is walking on the artificial limb. A sub stantially semi-circular member or plate'35 has ing 4|) and a relatively large nut 51 is threaded its end portions secured to the upper parts 2| of onto the bolt and the head 56 and nut 51 provide the knee joint 20 as by rivets 36 and at the inner means to prevent the coils 54 of the spring from moving off the ends of the bushing. With this 25 side of said plate are a pair of ears 31 secured by arrangement it will be apparent that the spring rivets 38 and extending inwardly and down wardly with respect to the plate. An eye bolt 39 is' constantly tending to move the cylinder 44 in a has its head disposed between the ears 31 and a . direction to push the cylinder against the inner bushing 40 vpasses through thevears and‘eye bolt surface of-the rear wall of the calf | I. The pull cord 5| is carried outwardly/against 80 1 . 30 and pivotally mounts the eye bolt. ' On the lower end of the’eye bolt 39 there _is thev under side of a pulley 58 mounted between a threaded a push rod 4| comprising a tubular pair; of plates 59 which plates are supported by member into which the eye bolt 39 threads and in' tubular members 60 extending across the calf- Il transverse section the exterior of this push rod is in vertical spaced relation to one another and A locking means generally designated 34 is provided to preventfree pivotal movementlbe 35 non-circular preferably being square. A counter or lock nut 42 is threaded oñto the eye-bolt 39.“ The lower end of the push rod 4| passes through an opening in a bushing 43 which bushing is threaded into the upper end of a cylinder 44. Below the bushing 43 the push rod is provided with an enlargement or a head 45 o! such diam eter as to be'incapable of passing> through the opening in the bushing 43 and the opening in such bushing is shaped to conform to the exterior shape of the push rod so that thelatter has no turning movement in the bushing. Within the'cylinder 44 and bearing at one end against the head 45 of the push rod is a spring 46 constantly exerting an effort ag‘ainst the lower end of the p‘ush rod. Obviously, the push rod may be adjusted on the eyebolt 39. and the bush secured in position by the intermediate pairs of screws 28 used in securing the lower parts 22 of the knee joint to the calf. 0n passing under the pulley 58 the pull cord 5| is~carried upwardly as shown in Fig. 2 and passes out of the artiiicial -leg through an opening 6| -in the lower portion of the thigh Il).I The manner in which the outer or upper end of the cord 5| is secured will later be set forth. ` If~ desired a catch may be provided as shown in Figs. 3a and 3b whereby this lock may be ' prevented from moving to locking position. For example, when driving a car it would be unde sirable to have theleg lock in straightened po sition after pushing downwardly on the brake pedal as it might be necessary to unlock the ~joint ‘before the brake could be released. This ing 43, owing to its threaded connection to its ` latch may take various forms but as shown com-. cylinder 44, is adapted to adjust the tension of the spring 46 since the bushing may be threaded prises a catch member 41a, pivoted to the bracket l41 at 41b‘. A spring 41o is secured to the catch at 41d and to the shell |'I at 41e. This'jcatch - more or less into- the cylinder as desired by turn ing of rod 4| by a suitable wrench, and it may . may be shifted to a position vover the bracket then be locked by nut 42. A small bracket 41 is 41a as shown in full lines when it will hold the secured against the‘inner surface of the rear wall lock 44 oii‘ the bracket as shown so it can not lock. If the catch Ais swung to one side as in of the calf Il as by screws 48. When the arti flcial limb is being used the lower end of the cyl. inder 44 bears against the horizontal arm of the bracket 41 as shown in Figs. l and 2 and the spring 46 provides the necessary cushion between the cali’ and thigh and produces the oscillation - of the thigh. dicated in dotted lines it will not prevent mem ber 44 going over thetop of the bracket and lock- , ing as indicated above. In these movements the spring 41e passes over the pivot 41b and so holds the catch in either position. The catch may be provided with a finger piece 41j or an opening 65 41g which may be engaged by a finger to move About the lower end portion of the cylinder 44 is an unlocking or releasing ring 49 prevented it to either position. Calf Il and foot i2 are connected by an ankle from sliding oiî the cylinder by a protecting or stop ring 50. Connected with the unlocking ring; joint generally designated. 52 and which joint 49 is a cord 5| adapted to be pulled or drawn to comprises upper parts 63 secul‘ed against the in 70 move the lower end of the cylinder 44 oil the bracket 41 so that -the artiñcial limb may pivot at the. knee joint when the wearer is sitting. It may also be released by pressing inwardly with a iinger of the wearer’s hand against the back-0f ner sides of the lower portion of the calf Il as by> rivets 64 and lower parts 65 disposed in chan nels 66 and secured against opposite sides of a base 61 of the foot as by bolts 68 passing trans versely through such base. The lower ends of 75 3 2,127,563 ì the parts 63 are received in the'bifurcated upper lent pairs of the -openings |40 in_the beltÁ where by the pulley |43 will be mounted to give the end portions of the parts 65 and bushing pins 10 are passed through the overlapping end por most convenience and comfort to the wearer. A . strong cord of leather or the like |45 is'passed over the pulley |43 and then down under the pulleys 85 and 66 and the ends of the cord are nected.' Y brought up at the front of the wearer and con In addition to the base 41, which is prefer nected with a buckle |46 secured- to the belt |34 ably a metal casting, theA foot |2'includesa 'felt as by a tab |41. This same arrangement is as toe 12 and beneath the base and the toe there' ` above suggested used for securing either form of 10v is arranged the shock absorbing sponge rubber lthe artificial limb to the body of the wearer. The pad 13.v Screws 14 are preferably- used for se elastic |4| servestokeep the cord |45 taut and tions and screws 1| are passed through the joints' to secure the parts. From this it will be -apparent that the calf Il and foot |2 are pivotaliy-con curing the toe 12 to the base 61. At the under side of the pad 13 there is arranged a leather sole 15 and it will be understood that a regular shoe may be" worn on the foot. Preferably the . foot I2 includes a leather casing or cover 16.v A f’ plate or closure 11 is arranged in the 4lower end of' the calf || and is preferably welded -therein as at 18. Arranged lin the base 61 are a pair' of similar springsJQ and 80 and the spring 18 is arranged forwardly` of the pivot of the ankle joint while the spring 80 is arranged rearwardly ' \ of said pivot. ~ The upper ends 'of these springs are secured to the plate 11 as at 8| and the lower end of the spring 19 is 'engaged by an adjustable screw 82~ while the lower end of the spring 80' is engaged to hold theV thigh portion ofthe artificial limb a1 ways against the stump of the wearer’s leg but permi-ts> free movements of the' wearer’s body 15 and leg in all directions whether he is standing orsitting. When the leg of Figs. l and 2 is being used it is preferred that the pull cord 5| of the lock ing means be connected with` the .supporting buckle 46. With such an arrangement a user may by raising his shoulder exert a pull on the cord 5| so as to draw the lower end of the cyl inder 44 off the bracket 41 and `thus unlock the knee joint. Attention is Idirected to the fact that the' artificial limb of the present invention is en-> tirely free of wood, being made of metal, felt and leather. It is preferred that a light strong by a similar screw 83, the` 'said screws‘being metal suchas an aluminum alloy be used in the threaded through the bottom wall oi' the base 61. The cushioning pad 18 and the leather sole construction of the metal parts. _ Having thus set forth the _nature of my in 15 are provided withopenings 84 giving- access . vention, what‘I claim is: to the lower ends of the screws 82 and'88' where- ' by said screws may be adjusted. By adjusting said screws toïdecrease or increase the tension of the springs 19 and 80 the ,position of the toe ofthe foot relative to the calf || may be care fully regulated. 'I‘he springs may be independ ently adjusted since there is a separate regulat ing screw‘ for each spring. . A harness later to be described is provided for securing the artificial limb to the. wearer and the thigh portion I0 carries the means by which such> harness connects with the limb. ' This means in , l. In- an artificial leg construction, a thigh section, a‘cali' section, a knee joint connecting e said sections comprising a pairof. upper parts extending at the sides of the thigh section, a pair of lower parts secured tothe calf section and pivoted to the said upper parts to permit relative pivotal movement between the thigh and calf sec tions during normal operation, and adjustablemeans connecting the thigh section to said upper parts, said means being constructed and arranged to permit angular adjustments of the thigh sec tion relative to said upper parts and to perma cludes pulleys 85 and 86 located at the outer nently secure the section and said parts together sides of the thigh I0 and of which one is carried in different relative angular positions and hold by each o_f the upper parts 2| of the knee joint. them against relative movement during normal 'I'he pulleys are secured in place or clamped use of the leg. l ‘ against the parts 2| by plates 81 secured to the 2. In an artificial leg construction, a thigh parts by screws 88 passing through the plates section, a calf section,v a pair of plate -parts se and threaded into the parts 2|. Spacer bush cured to the sides of said thigh section, a knee ings may be provided about the screws ii' de- - vjoint‘connecting said sections and comprising a' sired and an intermediate screw 88a mounts the_ pair of upper parts extending at the sides of. the pulley. When the described leg is in use a thigh section, each of theparts‘of one oi’ sai`d strong cord of leather or the like is'passed under pair having a series of horizontally spaced open the pulleys 85 and 66- and attached to a harness ings therethrough, means connecting the parts at on the wearer so as to secure the artificial leg one side of the thigh in spaced relation` to said Vonto the stump of the wearer’s leg. openings, and means passing through a selected To mount or secure inplace the artificial _leg one of said openings inthe parts at each side of a harness such as shown in Figs. 5 and 6 isem `lthe thigh section and securing the parts at the ployed. .This harness includes a relatively- wide respective sides of the thigh together with the preferably leather belt or corset |84 secured about thigh section> in the desired angular relation to \ ~ >the waist _of the wearer as by a plurality of straps Y“and buckles |35. Suspender means comprising 65 straps _|36 are secured'to the front portions of the beit as at |31 and at the back of the wearer the calf section. f _ f 3. In an artificial leg construction, a thigh sec# tion, a calf. section, a pair of plate parts _secured 65 to the sides .of said thigh section, a knee joint connecting said sections and comprising a pair ' the straps may be crossed as at |38 and have their ends sewed or otherwise secured to the _belt as- at - s of upper parts exténdingat'the sides of the thigh |19. Adjacent its lower edge the belt is provided 70 4with spaced- pairs of perforations |48. By means of an elastic tape or strap |4| a support |42 carrying a pulley |48 is attached to the belt |34. section, each of the I`>parts of one of said pair having a series of vertically spaced >openings 70 therethrough, each of ¿the parts of the other pair _having a series of laterally spaced openings, and Pairs of hooks |44 may be used 1 means passing through selected ones of. said open for attachin the ends of the elastic |4| to the Í 75 belt and suc hooks are passed through~ conven ings in the parts at each side of the thigh section andsecuring the parts at the respective sides of 75 4. _ 2,127,566 the thigh section together with the thigh section ing of said knee joint, said means including rela in the desired position of vertical and angular tively `movable members and resilient yieldable adjustments relative to the calf section. ' means normally retaining said members in a -4. In an artiilcial leg construction, a thigh sec- ,A given relative positionv but to_ yield a limited tion, a calf section, a knee joint connecting said sections and comprising a. pair of upper parts extending at the sides oi' said thigh section, and amount under pressure, means to move said iirst means connecting the thigh section to said upper when a wearer sits. and‘a spring to snap said ñrst means back into such bearing engagement on straightening of the leg. 10 parts for vertical and angular adjustments rela 10 tive thereto,- said means comprising A members means out of such bearing engagement to permit ñexing of the knee joint for bending of said joint secured to the thigh section, a plurality of means connecting said members to the said upper parts - at vertically spaced points and adapted to permit relative vertical adjustment between them, one 15 of said securing means being constructed to per mit relative pivotal movement between the said members and said parts, and the others of. said connecting `means being oi a construction to permit relative lateral adjustment between the 20 said members and said parts to adjust the thigh '1. In an artificial leg construction, a thigh sec tion, a calf section, a knee joint connecting said sections, a lock comprising a member pivoted at its upper end to said thigh section, a cylinder into which said member extends, a spring in said section may be secured to said upper parts in thc-desired position of vertical and angular rela- " tion to the calf section. 5. In an artificial leg construction, a thigh sec 25 tion, a calf section, a knee joint connecting said _sections with their adjacent ends in spaced rela tion, a transversely curved knee cap plate secured i pivot to~permit ilexing of the knee joint when a wearer sits, and a spring to snap said cylinder member about said pivots, whereby the thigh to one of said sections and having a free end ex tending into the other section and slidable rela tive thereto at the fronts oi' said sections, and said plate comprising a flexible spring metal member adapted to iiex as the knee joint is ilexed andhaving its free end portion held against the latter section by the resiliency of the plate to close the space between the sections as the joint ilexes. 6. In an artificial leg construction, a thigh sec tion, a calf section, a knee joint connecting said sections, a lock`comprising a means connected 40 with one of said sections and having bearing en gagement against the other thereof -to limit ilex cylinder and resisting movement of the member into the cylinder, a bracket in. said cali section and on which the lower end of said cylinder rests when the lock is in normal position limiting ilex ing of the knee joint, means to draw the cylinder 20 oiî the bracket by swinging the member about its back into position with its lower end bearing against said bracket on straightening of the leg. 8. In an artificial leg construction, a thigh sec tion, a calf section, a knee joint connecting said sections, a lock comprising a means connected with one oi.' said sections and having bearing en gagement against the other thereof to limit ñex ing of said knee joint, means to move said means out of such bearing engagement vto permit greater flexing of the kn'ee joint, a spring to shift said first means back into such bearing engagement on straightening o'f the leg, and a 35 manually shiftable catch carried. by one of said sections and movable to a position to engage the lock means when out of bearing engagement. for retaining said latter means out of such bearing engagement. NICHOLAS MALLOY-BREHUNOFF.