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ES2251278A1 - Orthotic knee joint - Google Patents

Orthotic knee joint

Info

Publication number
ES2251278A1
ES2251278A1 ES200302322A ES200302322A ES2251278A1 ES 2251278 A1 ES2251278 A1 ES 2251278A1 ES 200302322 A ES200302322 A ES 200302322A ES 200302322 A ES200302322 A ES 200302322A ES 2251278 A1 ES2251278 A1 ES 2251278A1
Authority
ES
Spain
Prior art keywords
orthosis
knee
bars
rotation
knee joint
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.)
Granted
Application number
ES200302322A
Other languages
Spanish (es)
Other versions
ES2251278B1 (en
Inventor
Ricard Barbera Guillen
Jose Maria Baydal Bertomeu
Alvaro Page Del Pozo
Juan Manuel Belda Lois
Javier Sanchez Lacuesta
Mario Comin Clavijo
Jaime Prat Pastor
Pedro Vera Luna
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.)
ASOCIACION INSTITUTO DE BIOMECANICA DE VALENCIA
INST DE BIOMECANICA DE VALENCI
Original Assignee
ASOCIACION INSTITUTO DE BIOMECANICA DE VALENCIA
INST DE BIOMECANICA DE VALENCI
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 ASOCIACION INSTITUTO DE BIOMECANICA DE VALENCIA, INST DE BIOMECANICA DE VALENCI filed Critical ASOCIACION INSTITUTO DE BIOMECANICA DE VALENCIA
Priority to ES200302322A priority Critical patent/ES2251278B1/en
Priority to PCT/ES2004/070081 priority patent/WO2005032437A1/en
Publication of ES2251278A1 publication Critical patent/ES2251278A1/en
Application granted granted Critical
Publication of ES2251278B1 publication Critical patent/ES2251278B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A61F5/0123—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations for the knees
    • 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
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A61F2005/0132—Additional features of the articulation
    • A61F2005/0146—Additional features of the articulation combining rotational and sliding movements, e.g. simulating movements of a natural joint

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The invention relates to an orthotic knee joint. The inventive orthosis reproduces the physiological curve of the knee such as to correspond perfectly with the variation in the instantaneous axis of rotation of same. The invention is based on a mechanism comprising four bars with a degree of freedom, which can be used to vary the position of the axis of rotation of the orthosis. According to the invention, the lower part (4) of the orthosis serves as a fixed reference, while the upper part (1) thereof serves as a follower. The orthosis further comprises cams (2 and 3) which are used to transmit changes from the upper part (1) to the lower part (4) thereof.

Description

Articulación ortésica de rodilla.Orthotic knee joint.

Objeto de la invenciónObject of the invention

La presente invención se refiere a una articulación ortésica de rodilla, de entre las articulaciones en esta disposición.The present invention relates to a orthotic knee joint, between the joints in this provision.

Caracteriza esta invención una especial construcción de la articulación que evita la creación de esfuerzos no deseados en la rodilla, en base a un sencillo mecanismo de cuatro barras en el que la referencia fija del mismo actúa a su vez de leva adecuando a la perfección la transmisión de esfuerzos de la parte superior a la parte inferior de la órtesis.This invention characterizes a special joint construction that avoids the creation of efforts unwanted in the knee, based on a simple mechanism of four bars in which the fixed reference of the same acts in turn of cam adapting perfectly the transmission of efforts of the upper part to the lower part of the orthosis.

Antecedentes de la invenciónBackground of the invention

Es ampliamente conocido el uso de medios auxiliares a la articulación de los miembros inferiores, en caso de rotura de huesos o ligamentos, lo mismo que en otros especiales de patologías como pueda ser, entre otros, la espina bífida.The use of media is widely known auxiliary to the articulation of the lower limbs, in case of broken bones or ligaments, the same as in other specials of pathologies such as, among others, spina bifida.

En estos casos lo habitual es disponer articulaciones de un solo eje de giro, en construcción totalmente alejada de la rotación de la rodilla, que define un eje instantáneo, acorde con su estructura tridimensional y cuyo movimiento se puede establecer cortando este eje instantáneo por planos predetermi-
nados.In these cases, it is usual to have joints with a single axis of rotation, under construction totally away from the knee rotation, which defines an instantaneous axis, in accordance with its three-dimensional structure and whose movement can be established by cutting this instantaneous axis by predetermined planes -
swims

Este distanciamiento entre el eje fijo y el movimiento fisiológico genera esfuerzos indeseados que crean un gran disconfort por la inadecuada transmisión de movimientos, rozaduras en la piel y, al sentarse, en el interior del pantalón, que rompe con gran facilidad.This distance between the fixed axis and the physiological movement generates unwanted efforts that create a great discomfort from the inadequate transmission of movements, chafing on the skin and, when sitting, inside the pants, It breaks very easily.

Con el uso, estas órtesis pueden llegar a dañar gravemente los tejidos internos: ligamentos, cartílagos y tendones.With use, these orthoses can damage severely internal tissues: ligaments, cartilage and tendons

El solicitante desconoce la existencia de órtesis que resuelvan la problemática anteriormente descrita, con la sencillez y la eficacia de la invención que ahora se procede a describir.The applicant is unaware of the existence of an orthosis that solve the problem described above, with the simplicity and effectiveness of the invention that now proceeds to describe.

Descripción de la invenciónDescription of the invention

La presente invención se refiere a una articulación ortésica de rodilla, de entre todas aquellas articulaciones en esta disposición, caracterizada por su construcción en base a un mecanismo de cuatro barras con un grado de libertad que varía la posición del eje de giro de la órtesis en total correspondencia con la variación del eje instantáneo de rotación de la rodilla, encargándose una leva que es una de las barras de ese mecanismo, de la transmisión de esos cambios desde la parte superior a la parte inferior de la ór-
tesis.The present invention relates to an orthotic knee joint, among all those joints in this arrangement, characterized by its construction based on a four-bar mechanism with a degree of freedom that varies the position of the axis of rotation of the orthosis in total correspondence with the variation of the instantaneous axis of rotation of the knee, taking care of a cam that is one of the bars of that mechanism, of the transmission of these changes from the top to the bottom of the or-
thesis.

Para calcular en cada diseño de órtesis las dimensiones del mecanismo y el perfil de la leva, así como la talla adecuada, se ha desarrollado un programa de cálculo basado en algoritmos genéticos, evitando todos los problemas descritos, así como los balanceos de la órtesis y los posibles daños futuros debidos a esfuerzos internos de la rodilla.To calculate in each orthotic design the dimensions of the mechanism and cam profile, as well as the suitable size, a calculation program based on genetic algorithms, avoiding all the problems described as well such as orthosis balances and possible future damages due to internal knee efforts.

Igualmente, sin perder el diseño fisiológico, se puede bloquear el mecanismo, limitando los movimientos de la rodilla de acuerdo con la práctica médica o acorde con los deseos del usuario según un programa preestablecido, sin afectar al movimiento fisiológico de la rodilla del paciente.Likewise, without losing the physiological design, it can block the mechanism, limiting the movements of the knee according to medical practice or according to wishes of the user according to a preset program, without affecting the physiological movement of the patient's knee.

Descripción de los dibujosDescription of the drawings

Se complementa la presente memoria descriptiva, con un juego de planos, ilustrativos del ejemplo preferente y nunca limitativo de la invención.This descriptive report is complemented, with a set of drawings, illustrative of the preferred example and never limiting the invention.

La Figura 1 muestra dos posiciones diferentes cualesquiera del funcionamiento del mecanismo en cuadrilátero articulado de la invención, con el centro instantáneo de rotación en ubicación intermedia.Figure 1 shows two different positions any of the operation of the quadrilateral mechanism articulated of the invention, with the instantaneous center of rotation in intermediate location.

La Figura 2 muestra un alzado frontal de la construcción teórica de la órtesis, en objeto físico modelizado mediante el cuadrilátero articulado de la figura anterior.Figure 2 shows a front elevation of the theoretical construction of the orthosis, in modeled physical object using the articulated quadrilateral of the previous figure.

La Figura 3 muestra el seguimiento del movimiento fisiológico de la rodilla por parte de la órtesis, sin generación alguna de fricción.Figure 3 shows the movement tracking physiological knee by orthosis, without generation Some friction.

Realización preferente de la invenciónPreferred Embodiment of the Invention

A la vista de lo anteriormente enunciado, la presente invención se refiere a un articulación ortésica de rodilla, de entre estas articulaciones, caracterizada por su construcción en base a un cuadrilátero articulado, donde la referencia fija hace a su vez de leva (4), con dos barras (2, 3) contiguas a la leva (4) y un seguidor (1) del movimiento de la leva (4) que va unido a las barras (2, 3) de manera que el mecanismo presenta un grado de libertad (Figura 1A), que varía la posición del eje de giro de la órtesis (Figura 2), mientras que las barras (2, 3) se encargan de la transmisión de los cambios desde el seguidor (1) a la leva (4) o pieza inferior de la órtesis.In view of the foregoing, the The present invention relates to an orthotic joint of knee, between these joints, characterized by its construction based on an articulated quadrilateral, where the fixed reference in turn makes cam (4), with two bars (2, 3) next to the cam (4) and a follower (1) of the cam movement (4) that is attached to the bars (2, 3) so that the mechanism presents a degree of freedom (Figure 1A), which varies the position of the axis of rotation of the orthosis (Figure 2), while the bars (2, 3) are responsible for the transmission of changes from the follower (1) to cam (4) or lower part of the orthosis.

La Figura 1B muestra la generación de la curva (5) de los centros instantáneos de rotación, repetida en la Figura 3 como curva (5) fisiológica de la rodilla, curva (5) ésta reproducida por la órtesis, en total correspondencia con la variación del eje instantáneo de rotación de la rodilla.Figure 1B shows the curve generation (5) of the instantaneous centers of rotation, repeated in Figure 3 as physiological curve (5) of the knee, curve (5) this reproduced by the orthosis, in total correspondence with the variation of the instantaneous axis of rotation of the knee.

Las curvas extremas de esta Figura 3, descritas por la intersección de las barras (2, 3), como se observa en la Figura 1B como única solución que verifica la superficie que define su movimiento, están dispuestas como directrices de la superficie reglada (6), en la que el eje instantáneo de rotación hace de generatriz limitada por la intersección de unos planos (7, 8) que, en la disposición externa de ambas barras (2, 3), se corresponden con los laterales interior y exterior de la rodilla.The extreme curves of this Figure 3, described by the intersection of the bars (2, 3), as observed in the Figure 1B as the only solution that verifies the surface that defines their movement, are arranged as surface guidelines ruled (6), in which the instantaneous axis of rotation acts as generatrix limited by the intersection of planes (7, 8) that, in the external arrangement of both bars (2, 3), they correspond with the inner and outer sides of the knee.

Las barras (2, 3) limitan los movimientos de la rodilla, sin afectar al movimiento fisiológico de la misma, mediante la inserción en las perforaciones (9) de unos topes convencionales (no incluidos en la Figura 2).The bars (2, 3) limit the movements of the knee, without affecting the physiological movement of it, by inserting in the perforations (9) of some stops conventional (not included in Figure 2).

No altera la esencialidad de esta invención variaciones en materiales, forma, tamaño y disposición de los elementos componentes, descritos de manera no limitativa, bastando ésta para proceder a su reproducción por un experto.It does not alter the essentiality of this invention variations in materials, shape, size and arrangement of component elements, described in a non-limiting manner, sufficient this one to proceed to its reproduction by an expert.

Claims (3)

l. Articulación ortésica de rodilla, de entre las articulaciones de esta aplicación, esencialmente caracterizada porque la curva fisiológica de la rodilla ésta reproducida por la órtesis, en total correspondencia con la variación del eje instantáneo de rotación de la rodilla, en base a un mecanismo de cuatro barras con un grado de libertad, que varía la posición del eje de giro de la órtesis, en la que una leva (4) hace de pieza inferior (4) y un seguidor (1) hace de pieza superior, mientras que unas barras (2, 3) se encargan de la transmisión de los cambios desde el seguidor (1) o pieza superior a la leva (4) o pieza inferior de la
órtesis.l. Orthotic knee joint, between the joints of this application, essentially characterized in that the physiological curve of the knee is reproduced by the orthosis, in total correspondence with the variation of the instantaneous axis of rotation of the knee, based on a mechanism of four bars with a degree of freedom, which varies the position of the axis of rotation of the orthosis, in which a cam (4) acts as a lower part (4) and a follower (1) acts as an upper part, while bars ( 2, 3) are responsible for the transmission of changes from the follower (1) or upper part to the cam (4) or lower part of the
orthosis 2. Articulación ortésica de rodilla, según la reivindicación anterior, caracterizada por eliminar el rozamiento de la órtesis, al estar dispuestas las barras (2, 3) de modo que las curvas descritas por el punto de intersección de las mismas (2, 3) hacen de directrices de la superficie reglada (6), en la que el eje instantáneo de rotación hace de generatriz.2. Orthotic knee joint, according to the preceding claim, characterized by eliminating the friction of the orthosis, as the bars (2, 3) are arranged so that the curves described by the point of intersection thereof (2, 3) they make guidelines of the ruled surface (6), in which the instantaneous axis of rotation acts as a generatrix. 3. Articulación ortésica de rodilla, según las reivindicaciones anteriores, caracterizada porque mediante la inserción de unos topes en unas perforaciones (9) de la leva (4), las barras (2, 3) ven limitado su movimiento y en consecuencia el de la rodilla, sin afectar al movimiento fisiológico de la misma.3. Orthotic knee joint, according to the preceding claims, characterized in that by inserting some stops in perforations (9) of the cam (4), the bars (2, 3) are limited in their movement and consequently that of the knee, without affecting the physiological movement of it.
ES200302322A 2003-10-07 2003-10-07 KNEE ORTHESICAL ARTICULATION. Expired - Fee Related ES2251278B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES200302322A ES2251278B1 (en) 2003-10-07 2003-10-07 KNEE ORTHESICAL ARTICULATION.
PCT/ES2004/070081 WO2005032437A1 (en) 2003-10-07 2004-10-06 Orthotic knee joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200302322A ES2251278B1 (en) 2003-10-07 2003-10-07 KNEE ORTHESICAL ARTICULATION.

Publications (2)

Publication Number Publication Date
ES2251278A1 true ES2251278A1 (en) 2006-04-16
ES2251278B1 ES2251278B1 (en) 2007-07-01

Family

ID=34400674

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200302322A Expired - Fee Related ES2251278B1 (en) 2003-10-07 2003-10-07 KNEE ORTHESICAL ARTICULATION.

Country Status (2)

Country Link
ES (1) ES2251278B1 (en)
WO (1) WO2005032437A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7578799B2 (en) 2006-06-30 2009-08-25 Ossur Hf Intelligent orthosis

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036832A1 (en) 2010-08-04 2012-02-09 Technische Universität Berlin Orthosis for a body joint

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523585A (en) * 1983-10-03 1985-06-18 Lamb Steve R Anatomic fracture brace for the knee
US4628916A (en) * 1984-06-30 1986-12-16 United States Manufacturing Co. Braces for preventing injuries to the knee joint
US4715363A (en) * 1986-09-26 1987-12-29 Detty Garnett E Knee brace with extension angle establishing means
US4821707A (en) * 1987-12-28 1989-04-18 Andre Audette Mechanical articulated joint for knee braces
US5009223A (en) * 1989-10-02 1991-04-23 Defonce Michael A Variable axis knee brace
US5022391A (en) * 1989-06-05 1991-06-11 Weidenburner William K Knee orthosis
US5330418A (en) * 1991-03-06 1994-07-19 Townsend Industries, Inc. Multiaxis controlled motion knee brace with a four bar joint and method for producing same
US5792086A (en) * 1996-02-13 1998-08-11 Les Equipements Medicus Ltee Neurophysiologically designed knee orthosis with three dimensional joint

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523585A (en) * 1983-10-03 1985-06-18 Lamb Steve R Anatomic fracture brace for the knee
US4628916A (en) * 1984-06-30 1986-12-16 United States Manufacturing Co. Braces for preventing injuries to the knee joint
US4715363A (en) * 1986-09-26 1987-12-29 Detty Garnett E Knee brace with extension angle establishing means
US4821707A (en) * 1987-12-28 1989-04-18 Andre Audette Mechanical articulated joint for knee braces
US5022391A (en) * 1989-06-05 1991-06-11 Weidenburner William K Knee orthosis
US5009223A (en) * 1989-10-02 1991-04-23 Defonce Michael A Variable axis knee brace
US5330418A (en) * 1991-03-06 1994-07-19 Townsend Industries, Inc. Multiaxis controlled motion knee brace with a four bar joint and method for producing same
US5792086A (en) * 1996-02-13 1998-08-11 Les Equipements Medicus Ltee Neurophysiologically designed knee orthosis with three dimensional joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7578799B2 (en) 2006-06-30 2009-08-25 Ossur Hf Intelligent orthosis
US7985193B2 (en) 2006-06-30 2011-07-26 Ossur Hf Intelligent orthosis

Also Published As

Publication number Publication date
ES2251278B1 (en) 2007-07-01
WO2005032437A1 (en) 2005-04-14

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