WO1992022267A1 - Prosthesis joint with hydropneumatic cylinder - Google Patents

Prosthesis joint with hydropneumatic cylinder Download PDF

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Publication number
WO1992022267A1
WO1992022267A1 PCT/FR1992/000527 FR9200527W WO9222267A1 WO 1992022267 A1 WO1992022267 A1 WO 1992022267A1 FR 9200527 W FR9200527 W FR 9200527W WO 9222267 A1 WO9222267 A1 WO 9222267A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
prosthesis
joint according
joint
piston
Prior art date
Application number
PCT/FR1992/000527
Other languages
French (fr)
Inventor
Christian Migeon
Eric Ferrer
Original Assignee
Christian Migeon
Eric Ferrer
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
Application filed by Christian Migeon, Eric Ferrer filed Critical Christian Migeon
Publication of WO1992022267A1 publication Critical patent/WO1992022267A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/64—Knee joints
    • A61F2/642—Polycentric joints, without longitudinal rotation
    • A61F2/644—Polycentric joints, without longitudinal rotation of the single-bar or multi-bar linkage type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/70—Operating or control means electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/74—Operating or control means fluid, i.e. hydraulic or pneumatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/74—Operating or control means fluid, i.e. hydraulic or pneumatic
    • A61F2/748—Valve systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2002/5003—Prostheses not implantable in the body having damping means, e.g. shock absorbers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2002/5016—Prostheses not implantable in the body adjustable
    • A61F2002/5032—Prostheses not implantable in the body adjustable for adjusting fluid pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/5044—Designing or manufacturing processes
    • A61F2002/5055—Reinforcing prostheses by embedding particles or fibres during moulding or dipping, e.g. carbon fibre composites

Definitions

  • the invention relates to an articulation of an orthopedic prosthesis constituted by the assembly of a hydropneumatic cylinder and of its electromagnetic control.
  • This union is obtained thanks to an electrically controlled valve interrupting the circulation of fluid between the two chambers of a hydraulic cylinder.
  • This cylinder-solenoid valve assembly has three main advantages: - greater reliability in the use of the prosthetic joint,
  • the invention consists (fig 1) of two cylinders (1 and 2).
  • the first cylinder (1) contains a hydraulic fluid, it contains a piston (6) which allows the separation of the cylinder into two chambers (3 and 4).
  • This piston (6) is fixed on a through rod (5) equal to the length of the cylinder plus the total displacement stroke of the piston.
  • the upper end of the rod (5) is indirectly attached to the member to be fitted, by means of a rocker (17) articulated on the prosthesis.
  • the two chambers (3 and 4) communicate with each other by an external conduit (9) provided with two non-return valves (7 and 8) with adjustable throttle, thus constituting two regulators.
  • These check valves are antagonistic. However, a version with internal circulation of fluid is possible.
  • the second cylinder (2) is located in the extension of the first cylinder (1), a sealed partition (19) separates them.
  • the lower end of the through rod (5) is fixed to the piston (13) contained in the cylinder (2).
  • the length of the latter must be at least equal to the length of the piston stroke (6).
  • This second cylinder (2) is provided with two valves (14 and 21) by which more or less compressed air is introduced according to the desired settings. It also acts as a fixing on the bottom of the prosthesis.
  • a manual pump connected to the valve (14) can adjust the damping of the walking movement by adjusting the pressure.
  • the valve (22) can be closed and thus interrupt the circulation of fluid between the two chambers (3 and 4).
  • the piston (6) is then immobilized, which has the effect of blocking the joint in this position.
  • the valve (22) also acts as a non-return valve, and therefore allows the extension of the joint (expansion phase of the jack).
  • the electrical supply to the solenoid valve (10) is provided by a battery.
  • Two micro-contacts are installed at the front and at the back of the top of the prosthesis, and are activated by the weight supported, they ensure the electrical control of the electromagnet, via conductors: electrical wire , optical fiber, . . .
  • the whole of this device is implanted in a prosthesis made of composite materials (carbon).

Abstract

Orthopedic prosthesis joint with hydropneumatic cylinder and electromagnetic flexion locking. The invention relates to an orthopedic prosthesis joint allowing to lock the flexion. It is comprised of a first hydraulic cylinder (1) which regulates in an antagonist way the flexion and the extension of the joint through two adjustable non return valves (7 and 8) situated on the external circulation of the fluid (9). A second pneumatic cylinder (2) associated with the first cylinder has the function of damping the end of stroke and of propulsor, by means of compressed air. An electrovalve (10 and 22) controlled by front and rear contacts at the top of the prosthesis allows to lock the joint in the flexion phase (compression of the cylinder). Said assembly is installed in a joint prosthesis made of composite material (carbon).

Description

ARTICULATION DE PROTHESE A VERIN FKDROPNEUMATIQUE FKDROPNEUMATIC CYLINDER PROSTHESIS ARTICULATION
L'invention concerne une articulation de prothèse orthopédique constituée par l'ensemble d'un vérin hydropneumatique et de sa commande électromagnétique.The invention relates to an articulation of an orthopedic prosthesis constituted by the assembly of a hydropneumatic cylinder and of its electromagnetic control.
De nos jours, les systèmes de commandes et de fonctionnement d'une articulation prothetique sont complètement séparés. De façon générale, des ressorts pré-réglés, associés à un frein à tambour pour la commande de l'articulation mécanique; servent à ramener le bas de la prothèse de la flexion vers l'extension. Le freinage est alors proportionnel à la pression exercée par le patient. Par ailleurs, les déplacements des lignes de charge sur ce type d'articulation font que le freinage s'amenuise dès qu'apparaît une flexion, provoquant dans le pire des cas la chute du patient. Parfois un système de régulation hydraulique vient s'ajouter au mécanisme précédent. L'objet de l'invention est de proposer des systèmes unifiés de fonctionnement et de commande.Nowadays, the control and operating systems of a prosthetic joint are completely separate. In general, pre-adjusted springs, associated with a drum brake for controlling the mechanical articulation; are used to bring the bottom of the prosthesis from flexion to extension. The braking is then proportional to the pressure exerted by the patient. In addition, the movements of the load lines on this type of joint cause the braking to decrease as soon as a flexion appears, causing in the worst case the patient to fall. Sometimes a hydraulic regulation system is added to the previous mechanism. The object of the invention is to propose unified operating and control systems.
Cette union est obtenue grâce à une vanne à commande électrique interrompant la circulation de fluide entre les deux chambres d'un vérin hydraulique. Cet ensemble vérin-électrovanne a trois avantages principaux : - une plus grande fiabilité d'utilisation de l'articulation prothetique,This union is obtained thanks to an electrically controlled valve interrupting the circulation of fluid between the two chambers of a hydraulic cylinder. This cylinder-solenoid valve assembly has three main advantages: - greater reliability in the use of the prosthetic joint,
- la possibilité, moyennant quelques adaptations mineures, de transformer une articulation mécanique ordinaire en articulation hydraulique à frein, - un blocage de l'articulation à n'importe quel angle. L'invention est constituée (fig 1) de deux cylindres (1 et 2). Le premier cylindre (1) contient un fluide hydraulique, il renferme un piston (6) qui permet la séparation du cylindre en deux chambres (3 et 4). Ce piston (6) est fixé sur une tige traversante (5) égale à la longueur du cylindre plus la course totale de déplacement du piston. L'extrémité supérieure de la tige (5) est fixée indirectement au membre à équiper, par l'intermédiaire d'un basculeur (17) articulé sur la prothèse.- the possibility, with a few minor adaptations, to transform an ordinary mechanical articulation into a hydraulic articulation with brake, - a blocking of the articulation at any angle. The invention consists (fig 1) of two cylinders (1 and 2). The first cylinder (1) contains a hydraulic fluid, it contains a piston (6) which allows the separation of the cylinder into two chambers (3 and 4). This piston (6) is fixed on a through rod (5) equal to the length of the cylinder plus the total displacement stroke of the piston. The upper end of the rod (5) is indirectly attached to the member to be fitted, by means of a rocker (17) articulated on the prosthesis.
Les deux chambres (3 et 4) communiquent entre elles par un conduit extérieur (9) muni de deux clapets anti-retour (7 et 8) à étranglement réglable, constituant ainsi deux régulateurs. Ces clapets anti-retour sont antagonistes. Cependant une version à circulation intérieure de fluide est envisageable.The two chambers (3 and 4) communicate with each other by an external conduit (9) provided with two non-return valves (7 and 8) with adjustable throttle, thus constituting two regulators. These check valves are antagonistic. However, a version with internal circulation of fluid is possible.
Le deuxième cylindre (2) se situe dans le prolongement du premier cylindre (1), une cloison (19) étanche les sépare . L'extrémité inférieure de la tige traversante (5) est fixée sur le piston (13) contenu dans le cylindre (2). La longueur de ce dernier doit être au moins égale à la longueur de la course du piston (6). Ce deuxième cylindre (2) est pourvu de deux valves (14 et 21) par lesquelles on introduit plus ou moins d'air comprimé selon les réglages désirés. Il fait également office de fixation sur le bas de la prothèse.The second cylinder (2) is located in the extension of the first cylinder (1), a sealed partition (19) separates them. The lower end of the through rod (5) is fixed to the piston (13) contained in the cylinder (2). The length of the latter must be at least equal to the length of the piston stroke (6). This second cylinder (2) is provided with two valves (14 and 21) by which more or less compressed air is introduced according to the desired settings. It also acts as a fixing on the bottom of the prosthesis.
Selon une variante, une pompe manuelle reliée à la valve (14) peut permettre d'ajuster l'amortissement du mouvement de marche par un réglage de la pression.Alternatively, a manual pump connected to the valve (14) can adjust the damping of the walking movement by adjusting the pressure.
Sur la partie du conduit extérieur (9) situé entre les deux clapets anti-retour (7 et 8) se trouve une vanne (22) électromagnétique (10) bistable dans notre mode préférentiel.On the part of the external duct (9) located between the two non-return valves (7 and 8) is a valve (22) electromagnetic (10) bistable in our preferred mode.
Dans la phase de compression du vérin, qui correspond à la flexion de l'articulation, la vanne (22) peut être fermée et ainsi interrompre la circulation de fluide entre les deux chambres (3 et 4) . Le piston (6) est alors immobilisé, ce qui a pour effet de bloquer l'articulation dans cette position. Mais la vanne (22) fait également office de clapet anti-retour, et permet donc l'extension de l'articulation (phase de détente du vérin).In the compression phase of the jack, which corresponds to the bending of the joint, the valve (22) can be closed and thus interrupt the circulation of fluid between the two chambers (3 and 4). The piston (6) is then immobilized, which has the effect of blocking the joint in this position. But the valve (22) also acts as a non-return valve, and therefore allows the extension of the joint (expansion phase of the jack).
L'alimentation électrique de l'électrovanne (10) est assurée par une batterie. Deux micro-contacts sont installés à l'avant et à l'arrière du haut de la prothèse, et sont activés par le poids supporté, ils assurent le pilotage électrique de l'électro-aimant, par l'intermédiaire de conducteurs : fil électrique, fibre optique, . . .The electrical supply to the solenoid valve (10) is provided by a battery. Two micro-contacts are installed at the front and at the back of the top of the prosthesis, and are activated by the weight supported, they ensure the electrical control of the electromagnet, via conductors: electrical wire , optical fiber, . . .
Il est à noter que la tige traversante (5) du piston (6) est étanchéifiée par rapport aux deux extrémités du cylindre (1) par un joint (20) . Le cylindre (2) est borgne.It should be noted that the through rod (5) of the piston (6) is sealed relative to the two ends of the cylinder (1) by a seal (20). The cylinder (2) is blind.
L'ensemble de ce dispositif est implanté dans une prothèse réalisé en matériaux composite (carbone). The whole of this device is implanted in a prosthesis made of composite materials (carbon).

Claims

REVENDICATIONS
1 ) Articulation de prothèse orthopédique à vérin hydraupneumatique et blocage de flexion par commande électromagnétique caractérisée en ce que le vérin est constitué de deux cylindres indépendants (1 et 2). 2) Articulation selon la revendication 1 , caractérisée en ce que le cylindre (1) est à régulation hydraulique. Il renferme un piston (6), fixé sur une tige traversante (5), qui sépare ce cylindre en deux chambres (3 et 4). L'extrémité supérieure de cette tige est fixée, par exemple, sur le haut de la prothèse par l'intermédiaire d'un basculeur (17). Le fluide hydraulique contenu dans les chambres (3 et 4) se déplace dans un circuit (9) composé de deux clapets anti-retour (7 et 8) à étranglement réglable positionné de façon antagoniste permettant un réglage différent selon la course du piston. 3) Articulation selon la revendication 1 , caractérisée en ce que le deuxième cylindre (2), situé dans le prolongement du cylindre (1), séparé de celui-ci par une cloison étanche (19), est un amortisseur pneumatique. Il renferme un piston (13) fixé sur l'autre extrémité de la tige traversante (5). Il est pourvu de deux valves (14 et 21 ) par lesquelles on introduit plus ou moins d'air comprimé selon les réglages désirés. Il a le rôle d'amortisseur et de propulseur. Il fait également office de fixation sur le bas de la prothèse. 4) Articulation, selon les revendications 1 et 2, caractérisée en ce que le flux hydraulique du cylindre (1 ) circulant dans le circuit (9) peut-être interrompu entre les deux clapets anti-retour (7 et 8) par une vanne (22). 5) Articulation, selon les revendications 1 , 2 et 4, caractérisée en ce que la vanne est à pilotage électromagnétique (10).1) Articulation of orthopedic prosthesis with hydraupneumatic cylinder and bending blockage by electromagnetic control characterized in that the cylinder consists of two independent cylinders (1 and 2). 2) Joint according to claim 1, characterized in that the cylinder (1) is hydraulically regulated. It contains a piston (6), fixed on a through rod (5), which separates this cylinder into two chambers (3 and 4). The upper end of this rod is fixed, for example, on the top of the prosthesis by means of a rocker (17). The hydraulic fluid contained in the chambers (3 and 4) moves in a circuit (9) composed of two non-return valves (7 and 8) with adjustable throttle positioned in an antagonistic manner allowing a different adjustment according to the stroke of the piston. 3) Joint according to claim 1, characterized in that the second cylinder (2), located in the extension of the cylinder (1), separated from the latter by a watertight partition (19), is a pneumatic damper. It contains a piston (13) fixed on the other end of the through rod (5). It is provided with two valves (14 and 21) through which more or less compressed air is introduced according to the desired settings. It has the role of shock absorber and propellant. It also acts as a fixing on the bottom of the prosthesis. 4) Joint according to claims 1 and 2, characterized in that the hydraulic flow of the cylinder (1) circulating in the circuit (9) can be interrupted between the two non-return valves (7 and 8) by a valve ( 22). 5) Joint according to claims 1, 2 and 4, characterized in that the valve is electromagnetically piloted (10).
6) Articulation, selon l'une quelconque des revendications précédentes, caractérisée en ce que la commande électromagnétique de la vanne est assuré par des conducteurs électriques (23) reliés à des micro-contacts (15 et 16), implantés à l'avant et à l'arrière du haut de la prothèse.6) Joint according to any one of the preceding claims, characterized in that the electromagnetic control of the valve is ensured by electrical conductors (23) connected to micro-contacts (15 and 16), located at the front and at the back of the top of the prosthesis.
7) Articulation, selon l'une quelconque des revendications précédentes, caractérisée en ce que ces conducteurs peuvent être des fibres optiques.7) Joint according to any one of the preceding claims, characterized in that these conductors can be optical fibers.
8) Articulation, selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ensemble de ce dispositif est implanté dans une prothèse réalisé en matériaux composite.8) Joint according to any one of the preceding claims, characterized in that the assembly of this device is implanted in a prosthesis made of composite materials.
FEUILLE DE REMPLACEMENT REPLACEMENT SHEET
PCT/FR1992/000527 1991-06-14 1992-06-11 Prosthesis joint with hydropneumatic cylinder WO1992022267A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR91/07337 1991-06-14
FR9107337A FR2677540A1 (en) 1991-06-14 1991-06-14 ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRAUPNEUMATIC CYLINDER AND ELECTROMAGNETIC BENDING BLOCK.

Publications (1)

Publication Number Publication Date
WO1992022267A1 true WO1992022267A1 (en) 1992-12-23

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ID=9413886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1992/000527 WO1992022267A1 (en) 1991-06-14 1992-06-11 Prosthesis joint with hydropneumatic cylinder

Country Status (3)

Country Link
EP (1) EP0546129A1 (en)
FR (1) FR2677540A1 (en)
WO (1) WO1992022267A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711512A1 (en) * 1993-10-27 1995-05-05 Cros Claude Gerard Prosthetic component for the knee joint
EP0672398A1 (en) * 1994-02-22 1995-09-20 Otto Bock Orthopädische Industrie Besitz- und Verwaltungs-Kommanditgesellschaft Swivelling connection between parts of an orthopaedic device
DE19621034A1 (en) * 1995-06-09 1996-12-12 Proteval S A Pneumatic knee prosthesis
US5728172A (en) * 1992-09-29 1998-03-17 Otto Bock Orthopadische Industrie Besitz-Und Verwaltungs Kg Hinge joint in orthopaedic prostheses and ortheses
US5728173A (en) * 1996-04-08 1998-03-17 Chen; Sen-Jung Artificial knee joint
US5779735A (en) * 1996-05-17 1998-07-14 Molino; Joseph L. Knee unit for above-knee prosthetic leg
GB2328160A (en) * 1997-08-15 1999-02-17 Blatchford & Sons Ltd Hydropneumatic Lower Limb Prosthesis
NL1010209C2 (en) * 1998-09-29 2000-03-30 Griffioen Albert Maarten W Artificial ankle prosthesis is attached to end of artificial lower leg and has automatic hydraulic cylinder system which enables prosthesis to mimic flexing action of real ankle and foot joints
US6706074B1 (en) * 2003-04-22 2004-03-16 Sen-Jung Chen Artificial knee joint assembly capable of maintaining a knee angle between a lower leg and a thigh when the assembly stands on a horizontal or inclined surface
US6911050B2 (en) 2002-10-23 2005-06-28 Joseph L. Molino Prosthetic knee unit
US6997959B2 (en) * 2003-08-01 2006-02-14 Chien-Liang Chen Multi-functional artifical knee joint
US8403997B2 (en) 2006-03-24 2013-03-26 Blatchford Products Limited Lower limb prosthesis and control unit
WO2018065570A1 (en) * 2016-10-06 2018-04-12 Otto Bock Healthcare Products Gmbh Actuator/damper unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE518726C2 (en) * 1999-11-23 2002-11-12 Gramtec Innovation Ab Device for knee joint prosthesis comprising polycentric link mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR530887A (en) * 1919-12-22 1922-01-03 Automatic gait regulator brake for artificial legs
US3799159A (en) * 1971-10-28 1974-03-26 Us Health Education & Welfare Hydraulic flexion control device
EP0141640A1 (en) * 1983-10-31 1985-05-15 J.E. HANGER & COMPANY LIMITED Electrically released prosthetic joint
FR2577415A1 (en) * 1985-02-18 1986-08-22 Vaxjo Protes Ab HYDRAULIC DEVICE FOR CONTROLLING THE FUNCTIONS OF THE KNEE JOINT IN THE PROTHESES OF LOWER LIMBS
DE3923056A1 (en) * 1989-07-13 1991-01-24 Bernd Dr Ing Kuenne Knee-joint with free-wheel - is fitted with brake which is controlled by sensor inside prosthesis

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR530887A (en) * 1919-12-22 1922-01-03 Automatic gait regulator brake for artificial legs
US3799159A (en) * 1971-10-28 1974-03-26 Us Health Education & Welfare Hydraulic flexion control device
EP0141640A1 (en) * 1983-10-31 1985-05-15 J.E. HANGER & COMPANY LIMITED Electrically released prosthetic joint
FR2577415A1 (en) * 1985-02-18 1986-08-22 Vaxjo Protes Ab HYDRAULIC DEVICE FOR CONTROLLING THE FUNCTIONS OF THE KNEE JOINT IN THE PROTHESES OF LOWER LIMBS
DE3923056A1 (en) * 1989-07-13 1991-01-24 Bernd Dr Ing Kuenne Knee-joint with free-wheel - is fitted with brake which is controlled by sensor inside prosthesis

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5728172A (en) * 1992-09-29 1998-03-17 Otto Bock Orthopadische Industrie Besitz-Und Verwaltungs Kg Hinge joint in orthopaedic prostheses and ortheses
FR2711512A1 (en) * 1993-10-27 1995-05-05 Cros Claude Gerard Prosthetic component for the knee joint
EP0672398A1 (en) * 1994-02-22 1995-09-20 Otto Bock Orthopädische Industrie Besitz- und Verwaltungs-Kommanditgesellschaft Swivelling connection between parts of an orthopaedic device
NL9400269A (en) * 1994-02-22 1995-10-02 P G Van De Veen Consultancy B Device for pivotally connecting parts of an orthopedic device.
US5904721A (en) * 1995-06-09 1999-05-18 Proteval Prosthetic component with pneumatic device for knee articulation
DE19621034A1 (en) * 1995-06-09 1996-12-12 Proteval S A Pneumatic knee prosthesis
FR2735018A1 (en) * 1995-06-09 1996-12-13 Proteval PNEUMATIC PROTHETIC PIECE FOR JOINT KNEE
DE19621034C2 (en) * 1995-06-09 2001-05-31 Proteval S A Pneumatic knee prosthesis
US5728173A (en) * 1996-04-08 1998-03-17 Chen; Sen-Jung Artificial knee joint
FR2771624A1 (en) * 1996-05-17 1999-06-04 Joseph L Molino Knee unit for an above-knee prosthetic leg
US5779735A (en) * 1996-05-17 1998-07-14 Molino; Joseph L. Knee unit for above-knee prosthetic leg
GB2328160B (en) * 1997-08-15 2002-07-03 Blatchford & Sons Ltd A lower limb prosthesis
US6517585B1 (en) 1997-08-15 2003-02-11 Chas. A. Blatchford & Sons Limited Lower limb prosthesis
GB2328160A (en) * 1997-08-15 1999-02-17 Blatchford & Sons Ltd Hydropneumatic Lower Limb Prosthesis
NL1010209C2 (en) * 1998-09-29 2000-03-30 Griffioen Albert Maarten W Artificial ankle prosthesis is attached to end of artificial lower leg and has automatic hydraulic cylinder system which enables prosthesis to mimic flexing action of real ankle and foot joints
US6911050B2 (en) 2002-10-23 2005-06-28 Joseph L. Molino Prosthetic knee unit
US6706074B1 (en) * 2003-04-22 2004-03-16 Sen-Jung Chen Artificial knee joint assembly capable of maintaining a knee angle between a lower leg and a thigh when the assembly stands on a horizontal or inclined surface
US6997959B2 (en) * 2003-08-01 2006-02-14 Chien-Liang Chen Multi-functional artifical knee joint
US8403997B2 (en) 2006-03-24 2013-03-26 Blatchford Products Limited Lower limb prosthesis and control unit
WO2018065570A1 (en) * 2016-10-06 2018-04-12 Otto Bock Healthcare Products Gmbh Actuator/damper unit
CN109996517A (en) * 2016-10-06 2019-07-09 奥托·博克保健产品有限公司 Actuator-damper elements
CN109996517B (en) * 2016-10-06 2021-09-10 奥托·博克保健产品有限公司 Actuator-damper unit
US11602444B2 (en) 2016-10-06 2023-03-14 Otto Bock Healthcare Products Gmbh Joint device, hydraulic unit and method for controlling a joint device
EP4226898A1 (en) * 2016-10-06 2023-08-16 Otto Bock Healthcare Products GmbH Actuator/damper unit

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EP0546129A1 (en) 1993-06-16
FR2677540A1 (en) 1992-12-18

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