Connect public, paid and private patent data with Google Patents Public Datasets

Leg prosthesis with resiliently mounted stump socket

Download PDF

Info

Publication number
US3784988A
US3784988A US3784988DA US3784988A US 3784988 A US3784988 A US 3784988A US 3784988D A US3784988D A US 3784988DA US 3784988 A US3784988 A US 3784988A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
casing
part
prosthesis
sleeve
portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
T Trumpler
Original Assignee
T Trumpler
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/60Artificial legs or feet or parts thereof
    • A61F2/66Feet; Ankle joints
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/60Artificial legs or feet or parts thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/78Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
    • A61F2/7812Interface cushioning members placed between the limb stump and the socket, e.g. bandages or stockings for the limb stump
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/78Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
    • A61F2/80Sockets, e.g. of suction type
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/60Artificial legs or feet or parts thereof
    • A61F2/66Feet; Ankle joints
    • A61F2002/6614Feet
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/60Artificial legs or feet or parts thereof
    • A61F2/66Feet; Ankle joints
    • A61F2002/6614Feet
    • A61F2002/6657Feet having a plate-like or strip-like spring element, e.g. an energy-storing cantilever spring keel

Abstract

A leg prosthesis comprises a stiff upright leather casing, a sleeve freely suspended from the upper rim thereof and extending into the casing with free elastic play in all directions, and a foot affixed to the lower end of the casing. The foot includes a sole and a separate ankle part, a leaf spring extending through the foot in a horizontally inclined plane and connecting the foot parts, and a rubber cushion mounting the ends of the leaf spring.

Description

atent i191 Trumpler [45] Jan. 15, 1974 [54] LEG PROSTHESIS WITH RESILIENTLY 464,356 l2/l89l Gault 3/18 MOUNTED STUMP SOCKET 668,634 2/1901 Gault.... 3/35 X 98|,090 l/l9ll Kam 3/7 [76] Inventor: Theodor Trumpler, Haydnstrasse [22] File: May 15 1972 361,972 10/1922 Germany 3/7 [2l] Appl. No.: 253,468 Primary Examiner-Richard A. Gaudet Assistant Examiner-Ronald L. Frinks [30] Foreign Application Priority Data Attorney-Kurt Kalman May 18, 1971 Germany 2124564 52 U S C [57] ABSTRACT l l 3/18 3/7 33//3335 A leg prosthesis comprises a stiff upright leather cas- [511 im. ci. A61f 1/o2,A61f1/04 A61f1/o8 mg a sleeve freely Suspended from the upper rim [58] Fiend of Search 3/l7 19 thereof and extending into the casing with free elastic 33 35 2 play in all directions, and a foot affixed to the lower end of the casing. The foot includes a sole and a sepa [56] References Cited rate ankle part, a leaf spring extending through the foot in a horizontally inclined plane and connecting UNITED STATES PATENTS the foot parts, and a rubber cushion mounting the 197,741 12/1877 Rldsdale 3/17 R X ends 0f [he leaf spring, 2,025,835 l2/l935 Traulman 3/17 R 2,253,040 8/1941 Martino 3/17 R X 9 Claims, 2 Drawing Figures PATENTEDJAN 15 1974 SHEET 10F 2 PMENTEUJAH 15 19M SHEET 2 OF LEG PROSTHESIS WITH RESILIENTLY MOUNTED STUMP SOCKET The present invention relates to improvements in leg prostheses. It is designed specifically to eliminate the two weakest points in conventional prostheses.

Considerable problems have been encountered in suitably buffering the stump of an amputee against a leg prosthesis and to provide proper functioning of the joints. It has not been possible to buffer the stump so as to avoid undue friction and corresponding painful irritations of the stump. Also, the joints have not functioned properly and have had to be repaired repeatedly. Furthermore, amputees have complained that available prostheses are not good enough to enable them to engage in sports.

Experience has shown that buffering the stump against the stiff upright prothesis leather casing, be it by rubber cushions, felt or other material, is unbearable because the cushion does not keep the stump in the same position. All known cushions have pressed against blood vessels, causing considerable pain.

lf no cushion is used between the stump and the stiff prosthesis casing, this difficulty is avoided but the frictional irritation between stump and casing is correspondingly increased. Since the casing wall must be stiff enough to support the weight of the amputee whose stump extends into the casing, it cannot follow the movements of the stump in the casing. This causes continuing irritations.

lt has been proposed to use a springy sleeve in the casing. However, this has o'nly relieved frictional pressures at the stump during walking and has been designed only for very short stumps to prevent them from sliding out of the casing during the load-free phase of walking. ln the load phase, the stump is pressed again into the casing and the springy sleeve then operates just like the stiff casing.

Furthermore, the known prostheses do not permit the foot joint to function properly. Essentially, all known artificial feet are more or less centrally fixed to the shaft of the prosthesis and, when the foot is under load, the connecting parts rub against each other. This rubbing causes considerable wear. As soon as this wear between the relatively moving parts permits a play between the parts, the entire foot connection becomes progressively looser.

The relatively best solution to the problem has been provided by a rubber block connection between the sole part and the ankle part of the prosthesis. This, too, however, has serious shortcomings, as have various other devices used in known leg prostheses.

It is the primary object of this invention to provide a novel leg prosthesis which overcomes the various disadvantages of the conventional artificial limbs and provides an improved bearing for the stump of the amputee as well as a better foot joint function.

The above and other objects are accomplished in accordance with the invention with a stiff upright prosthesis'leather casing having an upper rim and a lower end, a sleeve extending into the casing and so suspended from the upper rim thereof as to have free elastic play in all directions in relation thereto without making contact with the casing, and a prosthesis foot affixed to the lower end of the casing. The foot includes a sole part having a forward toe portion, an ankle part separate from the sole part, a leaf spring extending along the entire foot to the forward toe portion in a horizontally inclined plane, the leaf spring connecting the sole and ankle parts, and an elastic rubber cushion mounting at least one end of the leaf spring. The sleeve preferably also consists of leather and it is preferred to mount both ends of the leaf spring on elastic cushions.

This combination provides a leg prosthesis of very good properties which not only permits even double amputees easier walking but also makes it possible to engage in such sports as skiing, tennis, mountain climbing, running, broad jump, etc.

The above and other objects, advantages and features of the present invention will become more apparent from the following detailed description of a now preferred embodiment thereof, taken in conjunction with the accompanying drawing wherein FIG. l is an elevational side view, partly in section, of a leg prosthesis according to this invention; and

FIG. 2 is an enlarged section of the prosthesis foot.

Referring now to the drawing, the leg prosthesis is shown to comprise a leg portion 1 including a stiff upright leather prosthesis casing la having an upper rim and a lower end. A sleeve 2 extends into the casing and is so suspended from the upper rim of casing la as to have free elastic play in all directions in relation to the casing without making contact therewith. This suspension is accomplished by an outwardly bent upper edge of the sleeve defining a groove of U-shaped cross section for suspending the sleeve from the upper rim of the casing. An annular rubber insert 4 is positioned in the groove and bonded to the sleeve so as to produce an elastic bearing for the sleeve on the casing rim, the insert 4 having a strip portion 5 spacing the sleeve from the casing about 2 or 3 cm. for permitting contactless free play. The rubber bearing will generally hold the sleeve stable in the casing so that its motions in the casing are minimal, the bearing being of hard rubber.

As shown in broken lines, the stump of the amputee is received in the sleeve. The minimal free play of the sleeve in a horizontal direction suffices fully for elastic absorption of the lateral impacts caused by movement of the stump during the constantly uneven load on the prosthesis, combined with the vertical impact absorption in the annular space 3 between casing la and sleeve 2. Due to the limited elastic movement of the sleeve with the stump, which extends thereinto, while the prosthesis is under load, there is no friction or pressure against the stump, thus avoiding irritations.

In fact, this elastic suspension of a stump receiving sleeve within the stiff casing constitutes a prosthesis within a prosthesis, the sleeve being made of a yielding or elastic material, such as soft leather, and being movable freely with the stump while the casing is stiff and load-bearing to provide a support for the sleeve. The elastic sleeve can be shaped according to the shape of the stump since its material is flexible. The sleeve may be accurately shaped by making a plaster cast of thel stump and using the cast to shape the sleeve. This sleeve is then freely suspended in the stiff casing so that it has free play therein without ever contacting the casing wall. The hard rubber bearing 4 dampens the free play of the sleeve in the casing and the elasticity of the sleeve material aids in the movement of the sleeve to conform fully to that of the stump. The rubber bearing permits movement in a lateral as well as a vertical direction, operating as a hard shock absorber in all directions when a load is applied thereagainst. The load is evenly distributed over the entire prosthesis due to the shock absorber as well as the elastically conforming shape of the sleeve to the stump.

The gauge of the sleeve wall is relatively thin to provide for good conformity to the stump and even distribution of the weight thereover but it is thick enough to provide a good support for the stump. ln this manner, the weight remains evenly distributed in all angular positions, which is particularly important for the amputee in walking steps, climbing mountains, and like up or down movements, as well as in running, jumping, bicycling, etc. During all such movements, the impacts of the stump are elastically absorbed by the universal elastic motion of the freely suspended sleeve.

These and other advantages of the freely suspended stump carrying sleeve of the prosthesis are combined according to the invention with a novel artificial foot whose improved joint movement brings out the full advantage ofthe novel stump support. The prosthesis foot is affixed to the lower end of the casing and includes a sole part 10 having a forward toe portion, and an ankle part 20 separate from the sole part. A leaf spring 13 extends along the entire foot to the forward toe portion in a horizontally inclined plane and connects the sole and ankle parts.

The leaf spring is preferably made of a glass fiber reinforced plastic, for instance Scotch-Ply, having a thickness of 6 mm. In the illustrated embodiment, a pair of threaded bolts 15, l and 16, 16 respectively connect the leaf spring to the rear portion of the ankle part 20 and the ball portion of the sole part 10. A flat plate 15a with threaded bores receives the outer threaded ends of the pair of bolts 15, 15 at the rear portion for tightening the bolts, and a pair of nuts 17, 17 receive the outer threaded ends of the pair of bolts 16, 16 at the ball portion for tightening these bolts. The ball portion of the sole part 10 has recesses receiving the nuts 17, 17, and washers are interposed between the nuts and the recesses.

In assembling the artificial foot, the r'ear end of the leaf spring is first attached to the ankle portion, the plates a being inserted into a slot in the ankle part to receive the ends of bolts 15, 15 and the bolts then being tightened. The sole part l0 is then mounted on the bolts 16, 16 and the nuts 17, 17 are tightened to fasten the sole part to the leaf spring and thus to connect the two foot parts.

The sole and ankle parts define a space therebetween in the assembled condition, the spring leaf 13 extending diagonally therebetween through this space 14. The front portion of the leaf spring rests on the front toe portion of the sole part and an elastic rubber cushion 18 is mounted over the leaf spring and engages the ankle part 20. Similarly, an elastic rubber cushion 19 is mounted between the rear end of the leaf spring and the sole portion so that the ends of the leaf spring are elastically cushioned in respect of the foot parts in opposite directions. The elastic cushioning not only improves the mobility of the foot but also increases the life of the prosthesis. It is particularly advantageous for maximum effect if the cushion 18 adjacent the forward toe portion is smaller and less elastic, i.e., of harder rubber, than the rear cushion 19.

The front and rear portions of the foot carry protective caps 1l and 12, respectively.

A particularly useful material for the leaf spring 13 is a glass fiber sheet having a fatigue strength or resistance to bending of 10,000 kg/sq.cm. Such a material is commercially available under the trademark Scotch-Ply" and remains useful for many years. A leaf spring of this material makes the foot wearable almost indefinitely and securely unites the two foot parts.

This connection effectively assures an elastic joint movement of the foot, assuring not only comfortable walking but also stability and enduring elasticity. The relatively hard elasticity of the leaf spring, combined with its cushioned mounting, can be readily conformed to the individual needs of all types of amputees to transform the impact energy of the weight of the wearer into rotational and angular energy needed for comfortable foot and leg movement. The two rubber cushions assist in this movement and limit the free springiness of the leaf spring so as to produce maximum comfort. Furthermore, the leaf spring may be readily replaced if it ever wears out or if a different elasticity is desired by the amputee.

The leg prosthesis of the present invention is not only very hardy in use, low in cost, light in weight and insensitive to atmospheric conditions, such as humidity, but also is smoother in function than any known leg prosthesis, operates without noise, involves no need for adjustments and gives ideal freedom of movement in lateral directions.

If the gage of the leaf spring is increased from 6 to 12 mm. and the front cushion for the leaf spring is removed, the artificial foot is ideally suited for skiing.

I claim:

l. A lower leg prosthesis comprising l. a stiff tubular casing, upright in the normal operating position of the prosthesis, said casing having an upper rim and a lower end,

2. a sleeve extending into said casing and having an upper edge portion bent outwardly and downwardly so as to define a groove of downwardly open, U-shaped cross section, said upper rim being received in said groove,

3. resilient insert means interposed in said groove between said rim and said edge portion for suspending said sleeve from said casing while permitting movement of said sleeve relative to said casing, and

4. a prosthetic foot including a. an ankle part affixed to said lower end,

b. a sole part vertically spaced from said ankle part,

said parts vertically bounding a free space therebetween, said sole part having a forward toe portion,

c. an elongated leaf spring having two longitudinal ends respectively fastened to said ankle part and to said sole part and freely extending through said space, and

d. an elastic cushion, one of said longitudinal ends being fastened to one of said parts, and said cushion being vertically interposed between said one longitudinal end and the other one of said parts.

2. The leg prosthesis of claim 1, wherein said resilient insert means includes an annular rubber member vertically interposed between said rim and said edge portion, a strip portion of said rubber member being horizontally interposed between said casing and said sleeve.

3. The leg prosthesis of claim 2, wherein the casing and the sleeve consist of leather.

4. The leg prosthesis of claim 2, further comprising a pair of threaded bolts respectively connecting the leaf spring to the rear portion of the ankle part and the ball portion of the sole part, a flat plate with threaded bores receiving the outer threaded ends of the pair of bolts at the rear portion of the ankle part for tightening the bolts, and a pair of nuts receiving the outer threaded ends of the pair of bolts at the ball portion for tightenl ing the bolts.

5. The leg prosthesis of claim 4, wherein the ball portion of the sole part has recesses receiving the pair of nuts, and washers are interposed between the nuts and the recesses.

6. The prosthesis of claim 2, wherein said foot further includes another elastic cushion vertically interposed between the other longitudanl end of said leaf spring and said one part.

a front and a rear protective cap mounted on the foot. 1k =l=

Claims (12)

1. A lower leg prosthesis comprising 1. a stiff tubular casing, upright in the normal operating position of the prosthesis, said casing having an upper rim and a lower end, 2. a sleeve extending into said casing and having an upper edge portion bent outwardly and downwardly so as to define a groove of downwardly open, U-shaped cross section, said upper rim being received in said groove, 3. resilient insert means interposed in said groove between said rim and said edge portion for suspending said sleeve from said casing while permitting movement of said sleeve relative to said casing, and 4. a prosthetic foot including a. an ankle part affixed to said lower end, b. a sole part vertically spaced from said ankle part, said parts vertically bounding a free space therebetween, said sole part having a forward toe portion, c. an elongated leaf spring having two longitudinal ends respectively fastened to said ankle part and to said sole part and freely extending through said space, and d. an elastic cushion, one of said longitudinal ends being fastened to one of said parts, and said cushion being vertically interposed between said one longitudinal end and the other one of said parts.
2. a sleeve extending into said casing and having an upper edge portion bent outwardly and downwardly so as to define a groove of downwardly open, U-shaped cross section, said upper rim being received in said groove,
2. The leg prosthesis of claim 1, wherein said resilient insert means includes an annular rubber member vertically interposed between said rim and said edge portion, a strip portion of said rubber member being horizontally interposed between said casing and said sleeve.
3. The leg prosthesis of claim 2, wherein the casing and the sleeve consist of leather.
3. resilient insert means interposed in said groove between said rim and said edge portion for suspending said sleeve from said casing while permitting movement of said sleeve relative to said casing, and
4. The leg prosthesis of claim 2, further comprising a pair of threaded bolts respectively connecting the leaf spring to the rear portion of the ankle part and the ball portion of the sole part, a flat plate with threaded bores receiving the outer threaded ends of the pair of bolts at the rear portion of the ankle part for tightening the bolts, and a pair of nuts receiving the outer threaded ends of the pair of bolts at the ball portion for tightening the bolts.
4. a prosthetic foot including a. an ankle part affixed to said lower end, b. a sole part vertically spaced from said ankle part, said parts vertically bounding a free space therebetween, said sole part having a forward toe portion, c. an elongated leaf spring having two longitudinal ends respectively fastened to said ankle part and to said sole part and freely extending through said space, and d. an elastic cushion, one of said longitudinal ends being fastened to one of said parts, and said cushion being vertically interposed between said one longitudinal end and the other one of said parts.
5. The leg prosthesis of claim 4, wherein the ball portion of the sole part has recesses receiving the pair of nuts, and washers are interposed between the nuts and the recesses.
6. The prosthesis of claim 2, wherein said foot further includes another elastic cushion vertically interposed between the other longitudianl end of said leaf spring and said one part.
7. The leg prosthesis of claim 6, wherein said leaf spring has a longitudinal portion intermediate said ends, said intermediate portion extending diagonally through said free space in spaced relationship to said ankle part and said sole part, said leaf spring constituting the sole effective connection between said parts.
8. The leg prosthesis of claim 6, wherein the first-mentioned cushion is adjacent the forward toe portion and is smaller and less elastic than the other cushion.
9. The leg prosthesis of claim 1, further comprising a front and a rear protective cap mounted on the foot.
US3784988A 1971-05-18 1972-05-15 Leg prosthesis with resiliently mounted stump socket Expired - Lifetime US3784988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712124564 DE2124564C3 (en) 1971-05-18 1971-05-18

Publications (1)

Publication Number Publication Date
US3784988A true US3784988A (en) 1974-01-15

Family

ID=5808203

Family Applications (1)

Application Number Title Priority Date Filing Date
US3784988A Expired - Lifetime US3784988A (en) 1971-05-18 1972-05-15 Leg prosthesis with resiliently mounted stump socket

Country Status (3)

Country Link
US (1) US3784988A (en)
DE (1) DE2124564C3 (en)
FR (1) FR2138082B1 (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274166A (en) * 1979-05-03 1981-06-23 Chambers Gary R Socket or cast brim
US4865612A (en) * 1986-07-28 1989-09-12 The Ohio Willow Wood Company, Inc. Prosthetic foot
US5112356A (en) * 1988-03-04 1992-05-12 Chas A. Blatchford & Sons Limited Lower limb prosthesis with means for restricting dorsi-flexion
US5314497A (en) * 1991-12-23 1994-05-24 Fay John N Apparatus and method for sealing a liner to a prosthesis
US5387246A (en) * 1989-04-13 1995-02-07 Phillips; Van L. Prosthetic ski leg
US5728177A (en) * 1994-08-15 1998-03-17 Flex-Foot, Inc. Prosthesis with foam block ankle
US6206934B1 (en) 1998-04-10 2001-03-27 Flex-Foot, Inc. Ankle block with spring inserts
US6478826B1 (en) 1998-04-10 2002-11-12 Van L. Phillips Shock module prosthesis
US6511512B2 (en) 1998-04-10 2003-01-28 Ossur Hf Active shock module prosthesis
US20030093158A1 (en) * 2000-10-26 2003-05-15 Phillips Van L. Foot prosthesis having cushioned ankle
US20050038525A1 (en) * 1999-05-24 2005-02-17 The Ohio Willow Wood Company Shock absorbing prosthetic foot for use with prosthetic ankle
US20050038524A1 (en) * 2003-08-15 2005-02-17 Jonsson Orn Ingvi Low profile prosthetic foot
US6899737B1 (en) 1998-04-10 2005-05-31 Van L. Phillips Foot prosthesis having cushioned ankle
US20050267602A1 (en) * 2004-05-28 2005-12-01 Clausen Arinbjorn V Foot prosthesis with resilient multi-axial ankle
US20050284160A1 (en) * 2004-06-25 2005-12-29 Johnson Controls Technology Company Method of and apparatus for evaluating the performance of a control system
US20060058893A1 (en) * 2004-05-28 2006-03-16 Clausen Arinbjorn V Method of measuring the performance of a prosthetic foot
US20100004757A1 (en) * 2008-07-01 2010-01-07 Ossur Hf Smooth rollover insole for prosthetic foot
US20100042228A1 (en) * 2008-08-18 2010-02-18 The Ohio Willow Wood Company Prosthetic foot
US20110213471A1 (en) * 2010-02-26 2011-09-01 össur hf Prosthetic foot with a curved split
US8961618B2 (en) 2011-12-29 2015-02-24 össur hf Prosthetic foot with resilient heel
US9028559B2 (en) 2011-09-26 2015-05-12 össur hf Frictionless vertical suspension mechanism for prosthetic feet
US9439786B2 (en) 2012-08-01 2016-09-13 össur hf Prosthetic ankle module
USD795433S1 (en) 2015-06-30 2017-08-22 Össur Iceland Ehf Prosthetic foot cover
USD797292S1 (en) 2014-06-30 2017-09-12 össur hf Prosthetic foot plate

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002099A1 (en) * 1980-01-28 1981-08-06 Handel Proteser Oek A device for mounting an artificial limb to the stump of an amputated limb
FR2640499A1 (en) * 1988-12-15 1990-06-22 Palfray Michel Novel prosthetic foot structure
EP0444883A1 (en) * 1990-02-28 1991-09-04 CHAS. A. BLATCHFORD & SONS LIMITED An artificial foot

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US197741A (en) * 1877-12-04 Improvement in artificial limbs
US464356A (en) * 1891-04-01 1891-12-01 Artificial limb
US668634A (en) * 1899-11-07 1901-02-26 Alexander Gault Artificial limb.
US981090A (en) * 1910-04-18 1911-01-10 Harry W Karn Artificial foot.
DE361972C (en) * 1922-10-20 Wilhelm Mull Artificial foot
US2025835A (en) * 1934-04-30 1935-12-31 Trautman Ray Artificial leg
US2253040A (en) * 1940-01-05 1941-08-19 Philip A Martino Socket for artificial limbs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE301849C (en) *
DE495377C (en) * 1928-01-28 1930-04-05 Julius Loth A process for the production of hollow artificial limbs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US197741A (en) * 1877-12-04 Improvement in artificial limbs
DE361972C (en) * 1922-10-20 Wilhelm Mull Artificial foot
US464356A (en) * 1891-04-01 1891-12-01 Artificial limb
US668634A (en) * 1899-11-07 1901-02-26 Alexander Gault Artificial limb.
US981090A (en) * 1910-04-18 1911-01-10 Harry W Karn Artificial foot.
US2025835A (en) * 1934-04-30 1935-12-31 Trautman Ray Artificial leg
US2253040A (en) * 1940-01-05 1941-08-19 Philip A Martino Socket for artificial limbs

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274166A (en) * 1979-05-03 1981-06-23 Chambers Gary R Socket or cast brim
US4865612A (en) * 1986-07-28 1989-09-12 The Ohio Willow Wood Company, Inc. Prosthetic foot
US5112356A (en) * 1988-03-04 1992-05-12 Chas A. Blatchford & Sons Limited Lower limb prosthesis with means for restricting dorsi-flexion
US5387246A (en) * 1989-04-13 1995-02-07 Phillips; Van L. Prosthetic ski leg
US5314497A (en) * 1991-12-23 1994-05-24 Fay John N Apparatus and method for sealing a liner to a prosthesis
US5993488A (en) * 1994-08-15 1999-11-30 Phillips; Van L. Prosthesis with resilient ankle block
US5728177A (en) * 1994-08-15 1998-03-17 Flex-Foot, Inc. Prosthesis with foam block ankle
US5800569A (en) * 1994-08-15 1998-09-01 Phillips; Van L. Prosthesis with resilient ankle block
US20050234563A1 (en) * 1994-08-15 2005-10-20 Phillips Van L Foot prosthesis having cushioned ankle
US7354456B2 (en) 1994-08-15 2008-04-08 Phillips Van L Foot prosthesis having cushioned ankle
US7169190B2 (en) 1998-04-10 2007-01-30 Van L. Phillips Active shock module prosthesis
US6511512B2 (en) 1998-04-10 2003-01-28 Ossur Hf Active shock module prosthesis
US7879110B2 (en) 1998-04-10 2011-02-01 Ossur Hf Foot prosthesis having cushioned ankle
US20040068325A1 (en) * 1998-04-10 2004-04-08 Phillips Van L. Shock module prosthesis
US20040162623A1 (en) * 1998-04-10 2004-08-19 Phillips Van L. Foot prosthesis having cushioned ankle
US6280479B1 (en) 1998-04-10 2001-08-28 Flex-Foot, Inc. Foot prosthesis having cushioned ankle
US20100106260A1 (en) * 1998-04-10 2010-04-29 Phillips Van L Foot prosthesis having cushioned ankle
US6887279B2 (en) 1998-04-10 2005-05-03 össur hf Active shock module prosthesis
US6899737B1 (en) 1998-04-10 2005-05-31 Van L. Phillips Foot prosthesis having cushioned ankle
US20050209707A1 (en) * 1998-04-10 2005-09-22 Phillips Van L Active shock module prosthesis
US6206934B1 (en) 1998-04-10 2001-03-27 Flex-Foot, Inc. Ankle block with spring inserts
US7279011B2 (en) 1998-04-10 2007-10-09 Phillips Van L Foot prosthesis having cushioned ankle
US6478826B1 (en) 1998-04-10 2002-11-12 Van L. Phillips Shock module prosthesis
US20050038525A1 (en) * 1999-05-24 2005-02-17 The Ohio Willow Wood Company Shock absorbing prosthetic foot for use with prosthetic ankle
US20030093158A1 (en) * 2000-10-26 2003-05-15 Phillips Van L. Foot prosthesis having cushioned ankle
US7063727B2 (en) 2000-10-26 2006-06-20 Van L. Phillips Foot prosthesis having cushioned ankle
US20050038524A1 (en) * 2003-08-15 2005-02-17 Jonsson Orn Ingvi Low profile prosthetic foot
US8007544B2 (en) 2003-08-15 2011-08-30 Ossur Hf Low profile prosthetic foot
US8858649B2 (en) 2003-08-15 2014-10-14 össur hf Low profile prosthetic foot
US8377146B2 (en) 2003-08-15 2013-02-19 Ossur Hf Low profile prosthetic foot
US8377144B2 (en) 2003-08-15 2013-02-19 Ossur Hf Low profile prosthetic foot
US9579220B2 (en) 2003-08-15 2017-02-28 össur hf Low profile prosthetic foot
US20050267603A1 (en) * 2004-05-28 2005-12-01 Lecomte Christophe G Foot prosthesis with resilient multi-axial ankle
US20090293641A1 (en) * 2004-05-28 2009-12-03 Clausen Arinbjoern V Method of measuring the performance of a prosthetic foot
US9668887B2 (en) 2004-05-28 2017-06-06 össur hf Foot prosthesis with resilient multi-axial ankle
US20090287315A1 (en) * 2004-05-28 2009-11-19 össur hf. Foot prosthesis with resilient multi-axial ankle
US7581454B2 (en) 2004-05-28 2009-09-01 össur hf Method of measuring the performance of a prosthetic foot
US7347877B2 (en) 2004-05-28 2008-03-25 össur hf Foot prosthesis with resilient multi-axial ankle
US20070106395A9 (en) * 2004-05-28 2007-05-10 Clausen Arinbjorn V Foot prosthesis with resilient multi-axial ankle
US7891258B2 (en) 2004-05-28 2011-02-22 össur hf Method of measuring the performance of a prosthetic foot
US7998221B2 (en) 2004-05-28 2011-08-16 össur hf Foot prosthesis with resilient multi-axial ankle
US20060058893A1 (en) * 2004-05-28 2006-03-16 Clausen Arinbjorn V Method of measuring the performance of a prosthetic foot
US20050267602A1 (en) * 2004-05-28 2005-12-01 Clausen Arinbjorn V Foot prosthesis with resilient multi-axial ankle
US8025699B2 (en) 2004-05-28 2011-09-27 össur hf Foot prosthesis with resilient multi-axial ankle
US7846213B2 (en) 2004-05-28 2010-12-07 össur hf. Foot prosthesis with resilient multi-axial ankle
US9132022B2 (en) 2004-05-28 2015-09-15 össur hf Foot prosthesis with resilient multi-axial ankle
US20050284160A1 (en) * 2004-06-25 2005-12-29 Johnson Controls Technology Company Method of and apparatus for evaluating the performance of a control system
US9168158B2 (en) 2008-07-01 2015-10-27 össur hf Smooth rollover insole for prosthetic foot
US8685109B2 (en) 2008-07-01 2014-04-01 össur hf Smooth rollover insole for prosthetic foot
US20100004757A1 (en) * 2008-07-01 2010-01-07 Ossur Hf Smooth rollover insole for prosthetic foot
US20100042228A1 (en) * 2008-08-18 2010-02-18 The Ohio Willow Wood Company Prosthetic foot
US8317877B2 (en) 2008-08-18 2012-11-27 The Ohio Willow Wood Company Prosthetic foot
US9351853B2 (en) 2008-08-18 2016-05-31 The Ohio Willow Wood Company Prosthetic foot
US20110213471A1 (en) * 2010-02-26 2011-09-01 össur hf Prosthetic foot with a curved split
US8486156B2 (en) 2010-02-26 2013-07-16 össur hf Prosthetic foot with a curved split
US9028559B2 (en) 2011-09-26 2015-05-12 össur hf Frictionless vertical suspension mechanism for prosthetic feet
US8961618B2 (en) 2011-12-29 2015-02-24 össur hf Prosthetic foot with resilient heel
US9439786B2 (en) 2012-08-01 2016-09-13 össur hf Prosthetic ankle module
USD797292S1 (en) 2014-06-30 2017-09-12 össur hf Prosthetic foot plate
USD795433S1 (en) 2015-06-30 2017-08-22 Össur Iceland Ehf Prosthetic foot cover

Also Published As

Publication number Publication date Type
DE2124564B2 (en) 1981-01-08 application
DE2124564C3 (en) 1981-09-17 grant
FR2138082B1 (en) 1973-07-13 grant
DE2124564A1 (en) 1972-12-07 application
FR2138082A1 (en) 1972-12-29 application

Similar Documents

Publication Publication Date Title
US6197066B1 (en) Prosthetic foot providing plantar flexion and controlled dorsiflexion
US5695527A (en) Coil prosthetic foot
US5443528A (en) Coil spring prosthetic foot
US5879386A (en) Magnetic prosthetic system
US5116384A (en) Prosthetic foot
US4636220A (en) Adjustable prosthetic foot
US3872519A (en) Total ankle prosthesis
US5507835A (en) Magnetic prosthetic system
US5613941A (en) Joint support apparatus
US6406500B1 (en) Foot prosthesis having curved forefoot
US3680549A (en) Spiral orthosis for the lower extremity
US7371262B2 (en) Low profile active shock module prosthesis
US5653767A (en) Prosthetic foot
US4463459A (en) Endo-skeletal artificial limb
US5219364A (en) Continuous one-piece prosthesis
US6851204B2 (en) Footwear sole with a stiffness adjustment mechanism
US4223457A (en) Heel shock absorber for footwear
US6247249B1 (en) Shoe system with a resilient shoe insert
US4652266A (en) Molded elastomeric prosthetic foot having energy-storing articulated keel
US6712860B2 (en) Lower leg prosthesis
US5219324A (en) Anterior dorsal ankle foot orthoses
US20030028256A1 (en) Prosthetic foot with tunable performance
Winter et al. Biomechanics of below-knee amputee gait
US6669737B2 (en) Foot insert for an artificial foot
US6206934B1 (en) Ankle block with spring inserts