EP1773257A1 - Prothese de l'articulation du genou - Google Patents

Prothese de l'articulation du genou

Info

Publication number
EP1773257A1
EP1773257A1 EP04822202A EP04822202A EP1773257A1 EP 1773257 A1 EP1773257 A1 EP 1773257A1 EP 04822202 A EP04822202 A EP 04822202A EP 04822202 A EP04822202 A EP 04822202A EP 1773257 A1 EP1773257 A1 EP 1773257A1
Authority
EP
European Patent Office
Prior art keywords
knee joint
points
prosthetic knee
prosthetic
joint according
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.)
Withdrawn
Application number
EP04822202A
Other languages
German (de)
English (en)
Inventor
Josef Grafinger
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
Publication of EP1773257A1 publication Critical patent/EP1773257A1/fr
Withdrawn legal-status Critical Current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
    • A61F2/646—Polycentric joints, without longitudinal rotation of the pin-guiding groove linkage type

Definitions

  • the knee joint is of particular importance in the prosthetic treatment of transfemural amputations. In addition to the mechanical strength and resilience, this must also meet certain functional requirements. On the one hand, it must not buckle when standing still and in the standing leg phase of the gait, so it must have sufficient stability. On the other hand, the dynamic behavior during the late stance phase and the swing leg phase must enable the most natural possible gait despite the lack of muscles. Depending on the agility of the patient being cared for, different systems are used. If, for example, the stability argument is in the foreground for frail patients, young and more active people try to meet their movement needs as much as possible. Accordingly, there is a diverse range of products on the market, from simple hinge joints to multi-axis joints (polycentric joints). These joints can also be equipped with additional mechanical and electromechanical components, such as mechanical locks, return springs, hydraulic dampers or even computer-controlled damping elements.
  • this quadrilateral joint is modeled by two circular guides.
  • the kinematics of the human knee joint are far more complex and the idealization of the cruciate ligaments as rigid rods of a quadrilateral joint is only an approximation of the actual behavior.
  • the aim of prosthetic joints is to move the center of rotation from the back to the front in order to be able to guarantee sufficient security against buckling in the standing leg phase.
  • the invention has set itself the goal of creating a prosthetic knee joint that is largely simple in construction and that meets all requirements essential for the user.
  • the coefficients can also assume negative values.
  • the migration of the current pivot point corresponds to the requirement shown above.
  • the guides are designed so that they are not circular orbits. So no overlapping quadrilateral is simulated.
  • the first body with the guides is gripped in a fork-like manner by the second body with the bearings of the bolts and a connection for the lower leg.
  • the second body with the bearings of the bolts or the like and the connection for the lower leg is gripped in a forked manner by a cover with a connection for the thigh, the cover being detachably connected to the first body.
  • the prosthetic knee joint can be easily disassembled into its individual parts. This results in the possibility of individual and yet simple design of the kinematics of the prosthetic knee joint and its adaptation to the requirements of prosthetic care for patients with transfemural amputation.
  • the detachable connection consists of at least one screw running approximately parallel to the bolts and the like.
  • a plate resting on the cover and on the first body can be arranged.
  • FIG. 1 shows a diagrammatic view of the prosthetic knee joint according to the invention
  • Figure 2 is an exploded view of the prosthetic knee joint according to the invention with the cover removed.
  • Fig. 3 also shows an exploded view of the prosthetic knee joint with the
  • FIG. 4 shows the first body in a schematic section with the registered
  • a prosthetic knee joint according to the invention has a first body 1, which is assigned to the thigh, and a second body 2, which is assigned to the lower leg.
  • first body 1 which is assigned to the thigh
  • second body 2 which is assigned to the lower leg.
  • two curved guides 3 and 4 are arranged, the course of which will be explained with reference to FIG. 4.
  • Body 2 is provided with a truncated pyramid-shaped connection 10 to the lower leg or its prosthesis.
  • the body 2 encompasses the body 1. Both bodies 1 and 2 are therefore inevitably guided against one another.
  • the unit consisting of the first and second body is gripped by a cover 11, which is provided with a truncated pyramid-shaped connection 12 to the thigh or its prosthesis.
  • a cover 11 which is provided with a truncated pyramid-shaped connection 12 to the thigh or its prosthesis.
  • connection of parts 1 and 11 is arranged on the cover 11 and the first body 1 lying plate 14.
  • the plate 14 is connected to the cover 11 by means of screws 15.
  • 4 shows the course of the guides 3 and 4.
  • the bore 13 'for the screw 13 lies in the use position of the prosthetic knee joint shown in the front.
  • the points Xp ( ⁇ ), Yp ( ⁇ ), X Q ( ⁇ ), Y Q ( ⁇ ) determined in the characterizing part of claim 1 or claim 2 relate to the center lines p and q of the guides 3 and 4.
  • the origin of the Coordinate system is moved to the front end of the center line p.

Abstract

L'invention concerne une prothèse de l'articulation du genou qui comporte, dans un premier corps (1), associé à la cuisse, deux guides arqués (3, 4) dont la courbure varie et dans lesquels s'engagent les axes (6, 7) ou analogues d'un second corps (2), associé à la jambe. Les points X<SB>P</SB>(f), Y<SB>P</SB>(f) d'un guide (3) et les points X<SB>Q</SB>(f) et Y<SB>Q</SB>(f) de l'autre guide (4) correspondent approximativement aux équations suivantes: X<SB>P</SB>(F) = A1 X F<SUP>5</SUP> + B1 x f <SUP>4</SUP> + C1 x f<SUP>3</SUP> +D1 x f<SUP>2</SUP> + E1 x f -F1; Y<SB>P</SB>(F) = A2 X F<SUP>5</SUP> + B2 x f <SUP>4</SUP> + C2 x f<SUP>3</SUP> +D2 x f<SUP>2</SUP> + E2 x f -F2; X<SB>Q</SB>(F) = A3 X F<SUP>5</SUP> + B3 x f <SUP>4</SUP> + C3 x f<SUP>3</SUP> +D3 x f<SUP>2</SUP> + E3 x f -F3; Y<SB>Q</SB>(F) = A4 X F<SUP>5</SUP> + B4 x f <SUP>4</SUP> + C4 x f<SUP>3</SUP> +D4 x f<SUP>2</SUP> + E4 x f -F4. Dans ces équations, l'angle de flexion f de l'articulation du genou doit être donné en radians. Avec une telle prothèse de l'articulation du genou, on obtient, dans une large mesure, une adaptation au mouvement naturel.
EP04822202A 2004-07-23 2004-12-02 Prothese de l'articulation du genou Withdrawn EP1773257A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0125904A AT413478B (de) 2004-07-23 2004-07-23 Prothesenkniegelenk
PCT/AT2004/000421 WO2006007605A1 (fr) 2004-07-23 2004-12-02 Prothese de l'articulation du genou

Publications (1)

Publication Number Publication Date
EP1773257A1 true EP1773257A1 (fr) 2007-04-18

Family

ID=34842291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04822202A Withdrawn EP1773257A1 (fr) 2004-07-23 2004-12-02 Prothese de l'articulation du genou

Country Status (8)

Country Link
US (1) US7597716B2 (fr)
EP (1) EP1773257A1 (fr)
JP (1) JP2008507304A (fr)
CN (1) CN101027019A (fr)
AT (1) AT413478B (fr)
AU (1) AU2004321509A1 (fr)
RU (1) RU2007106855A (fr)
WO (1) WO2006007605A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT510403B1 (de) * 2011-05-19 2012-04-15 Kurt Wayd Gelenk für kniegelenks-orthesen, -prothesen bzw. -stützen
JP6467286B2 (ja) * 2015-05-14 2019-02-13 オイレス工業株式会社 スライドユニット

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE315181C (fr) *
US1390915A (en) * 1918-05-07 1921-09-13 Loth Julius Alwin Artificial limb and the like
DE855611C (de) * 1950-04-21 1952-11-13 Fritz Dr Med Fischer Kniegelenkprothese bzw. Kniegelenkstuetzapparat
FR1162322A (fr) * 1956-11-12 1958-09-11 Articulation du genou pour appareil de prothèse
CH543276A (de) * 1971-10-13 1973-10-31 Sulzer Ag Kniegelenk für eine Oberschenkelprothese
PL294554A1 (en) * 1992-05-15 1993-11-29 Jaroslaw Deszczynski Mechanical areticulation joint with changeable position of its articulation axis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006007605A1 *

Also Published As

Publication number Publication date
AT413478B (de) 2006-03-15
CN101027019A (zh) 2007-08-29
RU2007106855A (ru) 2008-09-10
US7597716B2 (en) 2009-10-06
JP2008507304A (ja) 2008-03-13
ATA12592004A (de) 2005-08-15
US20090043401A1 (en) 2009-02-12
AU2004321509A1 (en) 2006-01-26
WO2006007605A1 (fr) 2006-01-26

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