|Publication number||US3501777 A|
|Publication date||Mar 24, 1970|
|Filing date||Jul 13, 1967|
|Priority date||Jul 13, 1967|
|Publication number||US 3501777 A, US 3501777A, US-A-3501777, US3501777 A, US3501777A|
|Inventors||Degtyarev Gavrill Artemovich, Klimov Nikolai Ivanovich, Leonov Vyacheslav Stepanovich|
|Original Assignee||Degtyarev Gavrill Artemovich, Klimov Nikolai Ivanovich, Leonov Vyacheslav Stepanovich|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (10), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
March 24, 1970 ca. A. DEGTYAREV ETAL 3,501,777
LEG PROSTHESES FOR THIGH DISARTIGULATIONS 2 Sheets-Sheet 1 Filed July 13, 1967 March 24, 1970 e. A. DEGTYAREV ET AL 3,501,777
LEG PROSTHESES FOR THIGH DISARTICULATIONS Filed July 13, 1967 2 Sheets-Sheet 2 United States Patent 3,501,777 LEG PROSTHESES FOR THIGH DISARTICULATIONS Gavrill Artemovich Degtyarev, Ul. Garibaldi 12, kv. 99; Nikolai Ivanovich Klimov, Ul. Vavilova 17, kv. 114; and Vyacheslav Stepanovich Leonov, Ul. Kedrova 16, kv. 36, all of Moscow, U.S.S.R.
Filed July 13, 1967, Ser. No. 653,094 Int. Cl. A61f 1/08, 1/04 U.S. Cl. 3-15 4 Claims ABSTRACT OF THE DISCLOSURE A leg prosthesis for thigh disarticulations near the hip having a half-corset provided with a bracket mounted near the underside which pivotally supports thigh, shin and foot members covered with an elastic material. An automatic lock is provided between the bracket and thigh member to support the body in the vertical position and is releasable for forward pivoting during sitting. The leg features an improved hinged link structure forming the thigh member comprising, an upper fork-like platform hinged to the bracket and hingedly supporting two parallel upright links having their lower ends hinged to a shaped link located at the knee area. An inclined link is hingedly supported between the platform and shaped links, thereby forming a hinged link structure capable of supporting great loads during walking and standing.
The present invention relates to supporting and moving appliances which may replace the lost limbs of a human, and more particularly to leg prostheses after thigh disarticulations near the hip.
Known in the prior art are leg prosthetic appliances after thigh disarticulation, comprising a half-corset complete with a bracket and an automatic lock and thigh, shin and foot members hinged in succession and covered with an elastic material, the bracket being located just under the half-corset .and the joint of the thigh and shin being provided with a lock.
A disadvantage of such prostheses is their poor functioning and giving way under persons wearing them due to locks in the thigh-to-shin joints (knee joints), the possibility of breaking thereof at the junctions between brackets and half-corsets (in the coxofemoral joints) due to large torques, the impossibility of providing the right setting of the persons body while sitting because of brackets being located just under the half-corsets.
An object of the present invention is to eliminate the above-said disadvantages.
The principal object of the invention is to provide an appliance after thigh disarticulation, which provides proper function, and does not give way while also being durable and enabling the right setting of the persons body while sitting.
To achieve this object there is provided a leg prosthesis after thigh disarticulation, comprising a half-corset complete with a bracket and automatic lock, a thigh member, a shin member and a foot member, in which, according to the invenion, the thigh member is made as a hinged four-link member whose one link in the prosthesis vertical position serves as a platform located in the upper portion of the thigh member under the half-corset, while the second and third links are made as two vertical, parallel up rights and an upright inclined towards them, respectively, whereas the fourth link is essentially a shaped piece rigidly attached to the thigh member.
In addition, the platform is made as a fork member which is provided with a shock absorber.
Besides, the uprights of the second and third links are made hollow.
3,501,777 Patented Mar. 24, 1970 The automatic lock, according to the invention, is located on the outer side of one of the fork arms with a clearance between its working end and the projection of the half-corset bracket.
Other objects and advantages of the invention will become more fully apparent from the following description thereof and the attached drawings, in which:
FIG. 1 is a longitudinal section in the sagittal plane through the prosthesis of the invention;
FIG. 2 is the front view of the prosthesis of the invention, partly broken away in section;
FIG. 3 is a longitudinal section in the sagittal plane through the prosthesis of the invention (sitting position);
FIG. 4 is a perspective view of the fork according to the invention; and
FIG. 5 shows a shaped member according to the invention.
The leg prosthesis after thigh disarticulation consists of a half-corset (FIG. 1), a bracket 2, an automatic lock 3, a thigh member comprising a platform 4, tWo vertical parallel uprights 5, an inclined upright 6, and a shaped member 7; a shin member 8, a foot member 9 and a shock absorber 10.
The thigh, shin and foot members are covered with an elastic plastic 11, e.g., urethane foam (FIG. 2).
The half-corset 1 is made of a cloth impregnated with polyamide varnish.
The bracket 2 is provided with a plate 12 rigidly attached to the half-corset 1.
The platform 4 (FIGS. 1 and 4) is made as a fork 13 (FIG. 4), and is located in the upper portion of the thigh member under the half-corset 1 (FIG. 1). The ends of parallel arms 14 of the fork 13 (FIG. 4) are hinged with the bracket 2 (FIG. 1) and with the upper end of the hollow inclined upright 6. The plate 15 (FIG. 4) perpendicular to and extending between the two parallel arms 14 of the fork 13 is hinged with the two parallel hollow uprights 5 (FIG. 1). Attached to the transverse plate 15 of the fork 13 (FIG. 4) is a shock absorber 16 receiving the load of the half-corset 1 (FIG. 1). The shaped member 7 (FIGS. 1 and 5) is rigidly attached to the tubular shin member 8 at its lower portion, while with its upper portion it is hinge-jointed with the two parallel vertical hollow uprights 5, and with its middle portion it is hingejointed with the lower end of the inclined hollow upright 6.
The foot member 9 is flexibly attached to the shin 8 through the shock absorber 10.
The proposed prosthesis may replace the lost lower extremity and reconstructs the principal functions of walking; it also makes it possible for the person to sit properly.
The presence of the four-link thigh member ensures the acceptance of a great load when walking and standing .(FIGS. 1 and 2), and eliminates the danger of bending in the prosthesis knee joint, while, when sitting .(FIG. 3), it permits to place the persons body in a comfortable position as the platform 4 and the two parallel hollow uprights 5 may displace towards the hollow upright 6, thereby forming a space under the half-corset 1 and the upper portion of the thigh member.
With a view to eliminating the spontaneous bending of the prosthesis when walking, the hinged joint between the bracket 2 and the fork 13 is provided with an automatic lock 3 mounted on the outer side of one of the arms 14 of the fork 13 in such a manner that its end operates against the projection of the bracket 2, while to improve the function on transferring the prosthesis the instant the toe of the foot 9 is lifted from the supporting surface, provision is made for a functional clearance, e.g., 2 to 3 mm. between the working end of the lock 3 and the projection of the bracket 2.
For the automatic transferring of the shin member 8 forwards, the tubular shin member 8 is provided with a spring 17.
The shock absorber improves the adaptation of the sole portion of the foot 9 to the supporting surface as well as softening impacts in the initial period of walking.
What is claimed is:
1. A leg prosthesis after thigh disarticulation, comprising: a half-corset with a bracket and an automatic lock; a thigh member which is essentially constituted as a platform in the vertical position of the prosthesis, and which is located in the upper portion of the thigh member under said half-corset, said platform being hinge-jointed at one end thereof with said bracket, two vertical parallel uprights, having upper ends hinge-jointed with the other end of said platform, an upright member inclined towards said two vertical parallel uprights and having an upper end hinge-jointed with said one end of said platform, a shaped member hinge-jointed with the lower ends of said parallel uprights, said shaped member being hinge-jointed with the lower ends of said inclined upright; a shin member rigidly attached to said shaped member; and a foot member having a flexible attachment to said shin.
2. A prosthesis as claimed in claim 1, in which the platform is constituted as a fork member having two spaced arms and a plate extending therebetween, said plate being provided with a shock absorber for contacting the underside of said half-corset.
3. A prosthesis as claimed in claim 1, in which the two vertical parallel uprights are hollow; the upright inclined member also being hollow.
4. A leg prosthesis after thigh disarticulation, comprising: a half-corset with a bracket having a projection and an automatic lock; a thigh member having a fork member for supporting the body in the vertical position of the prosthesis, said fork member having two spaced arms connected by a transverse plate, said plate being provided with a shock absorber for contacting the underside of said half-corset, said fork member being located in the upper portion of the thigh member under said half-corset, said fork member being hinge-jointed at one end thereof with said bracket, two vertical parallel hollow uprights having upper ends hinge-jointed with the other end of said fork member, a hollow upright member inclined towards said two vertical parallel hollow uprights, and having an upper end hinge-jointed with said fork member, a shaped member hinge-jointed with the lower ends of said parallel hollow uprights, said shaped member being hinge-jointed with the lower end of said inclined hollow upright member; a shin member rigidly attached to said shaped member; and a foot member having a flexible attachment to said shin member; said automatic lock being disposed on the outer side of one of the arms of said fork with a clearance between its working end and the projection of the bracket of said half-corset.
References Cited UNITED STATES PATENTS 773,199 10/1904 Cunningham 3-l5 1,299,980 4/1919 Marcinko 3-15 FOREIGN PATENTS 228,940 6/ 1960 Australia. 374,580 4/ 1923 Germany. 147,736 11/1962 U.S.S.R. 174,322 1/1966 U.S.S.R.
RICHARD A. GAUDET, Primary Examiner R. L. FRINKS, Assistant Examiner US. Cl. X.R. 37, 29, 33
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US773199 *||May 14, 1904||Oct 25, 1904||James R Cunningham||Artificial limb.|
|US1299980 *||Jan 7, 1919||Apr 8, 1919||Andrew Marcinko||Artificial limb.|
|AU228940B *||Title not available|
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3663967 *||Sep 6, 1968||May 23, 1972||Vermillion Clarence W||Joint movement limiting arrangement for prosthetic legs|
|US4187619 *||Mar 6, 1978||Feb 12, 1980||Gibbs Don W||Strap fastening means for a sock and shoe combination|
|US4215441 *||Feb 12, 1979||Aug 5, 1980||Thomas Haslam||Prosthetic hip|
|US4619661 *||Mar 3, 1983||Oct 28, 1986||Robert Axelsson||Prosthesis foot|
|US5593455 *||May 27, 1994||Jan 14, 1997||Phillips; Van L.||Plug mounted prosthesis|
|US5888238 *||Dec 20, 1996||Mar 30, 1999||Phillips; Van L.||Plug mounted prosthesis|
|US6131436 *||Mar 1, 1999||Oct 17, 2000||Lear Corporation||Method and system for wear testing a seat by simulating human seating activity and robotic human body simulator for use therein|
|US6153139 *||Sep 14, 1998||Nov 28, 2000||Marquette; Stuart||Prosthesis covering apparatus|
|US6206703 *||Mar 1, 1999||Mar 27, 2001||Lear Corporation||Biofidelic human seating surrogate apparatus|
|US6220089||Mar 1, 1999||Apr 24, 2001||Lear Corporation||Vibration dummy apparatus|
|U.S. Classification||623/31, 623/46, 623/55, 623/50|
|Cooperative Classification||A61F2/604, A61F2/605|