FR2677540A1 - ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRAUPNEUMATIC CYLINDER AND ELECTROMAGNETIC BENDING BLOCK. - Google Patents

ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRAUPNEUMATIC CYLINDER AND ELECTROMAGNETIC BENDING BLOCK. Download PDF

Info

Publication number
FR2677540A1
FR2677540A1 FR9107337A FR9107337A FR2677540A1 FR 2677540 A1 FR2677540 A1 FR 2677540A1 FR 9107337 A FR9107337 A FR 9107337A FR 9107337 A FR9107337 A FR 9107337A FR 2677540 A1 FR2677540 A1 FR 2677540A1
Authority
FR
France
Prior art keywords
cylinder
prosthesis
joint
joint according
piston
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.)
Pending
Application number
FR9107337A
Other languages
French (fr)
Inventor
Migeon Christian
Ferrer Eric
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR9107337A priority Critical patent/FR2677540A1/en
Priority to EP92911783A priority patent/EP0546129A1/en
Priority to PCT/FR1992/000527 priority patent/WO1992022267A1/en
Publication of FR2677540A1 publication Critical patent/FR2677540A1/en
Pending legal-status Critical Current

Links

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

Landscapes

  • Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Prostheses (AREA)

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 ORTHOPEDIQUE A VERIN HYDRO:'PNEUMATIQUE ET BLOCAGE DE FLEXION ELECTROMAGNETIQUE
L'invention concerne une articulation de prothèse orthopédique constituée par l'ensemble d'un vérin hydropneumatique et de sa commande électromagnétique.ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRO CYLINDER: 'PNEUMATIC AND ELECTROMAGNETIC BENDING BLOCK
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 prothétique 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'apparait 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, serve to bring the bottom of the prosthesis from flexion towards 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's 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 grace 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 prothétique,
- 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. 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 possibility, with a few minor adaptations, to transform an ordinary mechanical articulation into a hydraulic articulation with brake,
- blockage of the joint at any angle.

L'invention est constituée (fig 1) de deux cylindres (1 et 2). The invention consists (fig 1) of two cylinders (1 and 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 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 outer 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 flexion 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 provide 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 (8)

REVENDICATIONS 1) Articulation de prothèse orthopédique à verin hydraupneumatique et blocage de flexion par commande électromagnétique caractérisée en ce que le vérin est constitué de deux cylindres indépendants (1 et 2). 1) Articulation of an 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) 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. 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, to 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) Articulation selon la revendication 1, caractérisée en ce que le deuxième cylindre (2), situé dans le prolongement du cylindre (I), 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 compnmé 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.  3) Joint according to claim 1, characterized in that the second cylinder (2), located in the extension of the cylinder (I), 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) by 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) 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). 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) Articulation, selon les revendications 1, 2 et 4, caractérisée en ce que la vanne est à pilotage électromagnétique (10). 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 provided 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 précedentes, 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 précedentes, 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 whole of this device is implanted in a prosthesis made of composite materials.
FR9107337A 1991-06-14 1991-06-14 ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRAUPNEUMATIC CYLINDER AND ELECTROMAGNETIC BENDING BLOCK. Pending FR2677540A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9107337A FR2677540A1 (en) 1991-06-14 1991-06-14 ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRAUPNEUMATIC CYLINDER AND ELECTROMAGNETIC BENDING BLOCK.
EP92911783A EP0546129A1 (en) 1991-06-14 1992-06-11 Prosthesis joint with hydropneumatic cylinder
PCT/FR1992/000527 WO1992022267A1 (en) 1991-06-14 1992-06-11 Prosthesis joint with hydropneumatic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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
FR2677540A1 true FR2677540A1 (en) 1992-12-18

Family

ID=9413886

Family Applications (1)

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

Country Status (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008621A3 (en) * 1997-08-15 1999-05-14 Blatchford & Sons Ltd A lower limb prosthesis
WO2001037763A1 (en) * 1999-11-23 2001-05-31 Gramtec Innovation Ab A device at a knee joint prosthesis
US8403997B2 (en) 2006-03-24 2013-03-26 Blatchford Products Limited Lower limb prosthesis and control unit

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232602C2 (en) * 1992-09-29 1995-01-12 Bock Orthopaed Ind Joint in orthopedic prostheses and orthoses
FR2711512B1 (en) * 1993-10-27 2000-01-21 Claude Gerard Cros Prosthetic part for the knee joint.
NL9400269A (en) * 1994-02-22 1995-10-02 P G Van De Veen Consultancy B Device for pivotally connecting parts of an orthopedic device.
FR2735018B1 (en) * 1995-06-09 1997-07-11 Proteval PNEUMATIC PROSTHETIC PART FOR THE KNEE JOINT
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
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
DE102016118999B4 (en) * 2016-10-06 2018-05-09 Otto Bock Healthcare Products Gmbh Actuator damper unit

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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008621A3 (en) * 1997-08-15 1999-05-14 Blatchford & Sons Ltd A lower limb prosthesis
US6517585B1 (en) 1997-08-15 2003-02-11 Chas. A. Blatchford & Sons Limited Lower limb prosthesis
WO2001037763A1 (en) * 1999-11-23 2001-05-31 Gramtec Innovation Ab A device at a knee joint prosthesis
US6808540B1 (en) 1999-11-23 2004-10-26 Gramtec Innovation Ab Device at a knee joint prosthesis
US8403997B2 (en) 2006-03-24 2013-03-26 Blatchford Products Limited Lower limb prosthesis and control unit

Also Published As

Publication number Publication date
EP0546129A1 (en) 1993-06-16
WO1992022267A1 (en) 1992-12-23

Similar Documents

Publication Publication Date Title
FR2677540A1 (en) ORTHOPEDIC PROSTHESIS ARTICULATION WITH HYDRAUPNEUMATIC CYLINDER AND ELECTROMAGNETIC BENDING BLOCK.
US7017928B2 (en) Bicycle
EP0560652B1 (en) Control device for above knee prosthesis
US2568051A (en) Artificial leg
CA2250674A1 (en) Hydraulic control valve system with non-shuttle pressure compensator
JP5319556B2 (en) Hydraulic actuator with control valve
US5586781A (en) Variable ride height vehicle suspension system
CA2219207A1 (en) Pressure compensating hydraulic control system
US4759260A (en) Super reliable air-spring return air cylinder
EP0314668A3 (en) Hydraulic control
JP2020537558A (en) Orthopedic joints
JP2021121756A5 (en) Mechanism used for shock absorber
RU2004103867A (en) VEHICLE SUSPENSION REGULATION SYSTEM
CN101469726A (en) Stacked compression release valve
JP7271559B2 (en) Hydraulic damper with valve block
BE898332A (en) Method for saving energy when adjusting a cylinder of hydraulic excavator equipment by means of a hydraulic assembly.
ITMI20002184A1 (en) MOTORCYCLE WITH REAR SUSPENSION GROUP ACTIVE TO ALLOW A BETTER VEHICLE BRAKE
FR2670716A1 (en) Safety device mounted on an active anti-roll hydraulic cylinder
FR2503082A1 (en) WHEEL SUSPENSION, IN PARTICULAR FOR MOTORCYCLES
IT9019911A1 (en) INDEPENDENT LOAD COMMAND DEVICE FOR HYDRAULIC USERS
WO2001051874A2 (en) Self-compensating spade assembly
US3421545A (en) Free delivery and variably restricted return valve
FR2479350A1 (en) LOAD DISTRIBUTOR FOR A HYDRAULIC ACCUMULATOR
EP0152420A1 (en) A cable tensioning device
EP2390526B1 (en) Brake system

Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights