EP0149576B1 - Telescopic crutch for handicapped persons - Google Patents

Telescopic crutch for handicapped persons Download PDF

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Publication number
EP0149576B1
EP0149576B1 EP19850400057 EP85400057A EP0149576B1 EP 0149576 B1 EP0149576 B1 EP 0149576B1 EP 19850400057 EP19850400057 EP 19850400057 EP 85400057 A EP85400057 A EP 85400057A EP 0149576 B1 EP0149576 B1 EP 0149576B1
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EP
European Patent Office
Prior art keywords
handle
tube
foot
catch
crutch
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.)
Expired
Application number
EP19850400057
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German (de)
French (fr)
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EP0149576A2 (en
EP0149576A3 (en
Inventor
Claude Noe
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Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Commissariat a lEnergie Atomique CEA
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Publication of EP0149576A2 publication Critical patent/EP0149576A2/en
Publication of EP0149576A3 publication Critical patent/EP0149576A3/en
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Publication of EP0149576B1 publication Critical patent/EP0149576B1/en
Expired legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/02—Crutches

Definitions

  • the invention relates to a telescopic stand for the physically disabled and more specifically for paraplegics.
  • a cane or crutch of the conventional type that is to say one whose foot has a constant length suitable for walking, does not allow its user to get up easily. Indeed, it is too long to allow him to effectively lean on her when he is sitting and preparing to get up.
  • Document FR-A-2 526 281 describes a telescopic rod of variable length which attempts to remedy this drawback. It lengthens as the patient gets up and gives him help that can be effective.
  • US-A-4,245,659 SHOFNER
  • a stand whose length can be adjusted according to the needs of the user. It comprises a transverse element adapted to be fixed to the patient and a pair of crutches mounted on the transverse element by means of ball joints.
  • Each stand includes a pair of telescopic cylindrical tubes.
  • the inner tube has undulations which allow it to be immobilized relative to the outer tube.
  • a spring housed inside the inner tube urges it out of the outer tube.
  • An oblong element which has ribs on the side opposite the handle allows the inner tube to be immobilized in a fully or partially extended position. These ribs are intended to engage in the undulations of the inner tube.
  • a control rod housed in the handle allows the user to unlock and lock the oblong element using the hand holding the handle.
  • the present invention overcomes this drawback.
  • the telescopic stand described in US-A-4 245 659 comprises an upper part formed by a handle and a tube, a foot comprising at least one locking notch and slidably mounted in the tube between a retracted position and an extended position , securing means for securing in translation the tube and the foot in the retracted position thereof, these securing means can be moved between a first position in which they are engaged with the notch so that the foot is secured with the upper part of the stand, and a second position in which the notch is released from the securing means so that the foot can slide inside the tube, means for controlling the securing means, elastic means which urge the foot out of the tube, and stop means which prevent the foot from entering the tube from a partially or fully extended position.
  • the invention is characterized in that the handle is pivotally mounted relative to the tube, the securing means comprising a notch for receiving the notch, said handle being able to be moved by rotation between said first position and said second position, and means for locking in rotation of the handle in said second position being provided and being controlled by the control means.
  • the means for controlling the locking means consist of an axis linked in rotation to the tube, a bore being formed in said axis, a hole being located opposite the bore of the axis in the first position of the handle, a locking lug being displaceable in translation in the bore, elastic means being provided to urge said lug to exit the bore, an unlocking trigger being provided in the handle.
  • FIG. 1 is an overall view of a telescopic stand produced in accordance with the present invention
  • FIG. 2 is a view on an enlarged scale and partially in section of the lower part of the telescopic stand of the invention shown in FIG. 1.
  • Figures 3 to 5 are sectional views which show preferred embodiments of the means for securing the foot with the stand and the control of these securing means;
  • Figure 3 shows the stand in the locked position and Figure 4 in the unlocked position;
  • FIG. 5 is a variant of FIGS. 1 to 4.
  • the crutch of the invention shown in Figures 1 and 2 includes an upper part formed of a handle 2 and a tube 4.
  • the handle comprises the handle 2a proper as well as the cuff 2b intended to serve as a support for the patient's forearm , as in a conventional type crutch.
  • the handle 2 could be constituted by a simple knob.
  • the foot 6 has a rubberized lower end 6a intended to increase the grip with the ground and an upper end 6b constituted by a rod of smaller section than the main part of the foot.
  • the rod has at its end a notch 6c whose function will be explained later.
  • the difference in diameter between the part 6b and the body of the foot determines a shoulder.
  • This shoulder serves as a support for one end of a helical spring 8, which is housed in the tube 4.
  • the tube 4 has several openings 4a intended to stop a trigger 10 which is pushed into the extended position, as shown in FIG. 2 by an interior spring not shown, to prevent the foot 6 from penetrating inside the tube 4.
  • FIG. 3 and 4 There is shown in Figures 3 and 4 a particular embodiment of the means which allow the attachment of the leg 6 to the upper part of the stand, as well as a particular embodiment of the control means of these attachment or locking means.
  • the handle 2 is pivotally mounted on the tube 4 around an axis 12 visible externally in Figure 1 and in section in Figures 3 and 4.
  • a hole 14 is made in the axis 12.
  • a spring 16 and a pin 18 are housed in the hole 14.
  • the handle 2 has a hole 20 whose diameter is substantially equal to that of the hole 14 and a hole 22 of smaller diameter, the hole 22 being coaxial with the hole 20 in which it opens at one of its ends. At its other end, it opens at the end of the handle 2.
  • a rod 24, terminated by a button 24a, is housed in the hole 22.
  • Its end 24b is capable of bearing on the pin 18 when the handle is suitably oriented. Indeed, this handle can be moved in rotation around the axis 12 by an angle to between a raised position, shown in Figure 3, and a lowered position, shown in Figure 4.
  • the angular movement of the handle by relative to the tube 4 is limited by a clearance 26 provided in the axis 12 and a portion 28 projecting from the handle 2 and engaging in the clearance 26 in order to limit the angular displacement thereof.
  • the handle 2 also has a recess 30 which has a locking notch 32 adapted to cooperate with the notch 6c of the foot 6. In FIG. 3, the notch 6c has been shown engaged inside the locking notch 32. In this position, the foot 6 cannot leave the tube 4 under the action of the helical spring 8 because the latter is retained at its upper part by the notch 6c.
  • the handle 2 can be moved to the locking position in the direction of the arrow 34 and to the unlocking position in the direction of the arrow 36.
  • the handle 2 has been shown in the unlocked position.
  • the rod 24 housed in the hole 22 is in contact with the end of the pin 18.
  • the helical spring 16 is relaxed.
  • the pin 18 engages in the hole 20 of the handle 2, so that a rotation of the latter relative to the axis 12, and therefore relative to the upper part 4 of the stand, is prohibited .
  • the projecting part 28 is in contact with a face of the recess 26 which forms a stop. This limits the rotational movement of the handle relative to the axis 12.
  • the notch 6c is released from the locking notch 32.
  • the rod 6b can therefore move inside the tube under the action of the helical spring 8, as shown schematically by the arrow 38.
  • the stand then takes the deployed position shown in Figures 1 and 2.
  • the trigger 10 engages in one of the holes 4a, which prevents the foot 6 from entering in the tube when you take support on the stand.
  • the tube 6 has several orifices 4a distributed over its length.
  • buttons 24a which makes the pin 18 penetrate the hole 14 provided in the axis by compressing the spring 16 until the end of the pin 18 is flush with the perimeter of the axis. It is then possible to move the handle 2 in rotation in the direction of the arrow 34 (FIG. 3).
  • this stand is as follows. From the deployed position shown in Figure 1, we move to the retracted position by manually erasing the trigger 10 so as to be able to penetrate the foot 6 in the tube 4. We also place the handle 2 in the position shown on the Figure 4, that is to say in such a way that the clearance 30 is presented opposite the notch 6c; the locking notch being in the released position. The foot 6 is pushed all the way inside the tube until this notch bc is opposite the locking notch 32, as shown in FIG. 4. Then the unlocking button 24a is pressed to penetrate the pin 18 into the hole 14, as explained above. This makes it possible to pivot the handle 2 towards the locking position in the direction of the arrow 34. The locking notch 32 enters the notch 6c. The stand is then in the folded position and the foot 6 can no longer leave the tube 4.
  • the end 6a is then placed on the ground and the support is supported in one of the following ways:
  • the spring 8 is immediately released by bringing the handle 2 forwards in the direction of the arrow 36.
  • the action of the helical spring 8 can then be carried out but will only occur when the standing patient simultaneously relieves his or her weight. one crutch on the other.
  • the stand will reach its normal length in one or more stages depending on the number of holes 4a provided in the cane tube for the trigger 10.
  • FIG. 5 an alternative embodiment of the device shown in Figures 1 to 4.
  • the contact surface between the upper part 4 of the stand and the handle 2 is not oriented upwards.
  • rainwater or dust for example, can get inside the mechanism, which can lead to its seizure or deterioration .
  • the rainwater is driven downwards by gravity without being able to get inside the mechanism.

Description

L'invention concerne une béquille télescopique pour handicapés moteurs et plus précisément pour paraplégiques. Une canne ou une béquille de type classique, c'est-à-dire dont le pied présente une longueur constante adaptée à la marche, ne permet pas à son utilisateur de se lever facilement. En effet, elle est trop longue pour lui permettre de s'appuyer efficacement sur elle lorsqu'il est assis et se prépare à se lever.The invention relates to a telescopic stand for the physically disabled and more specifically for paraplegics. A cane or crutch of the conventional type, that is to say one whose foot has a constant length suitable for walking, does not allow its user to get up easily. Indeed, it is too long to allow him to effectively lean on her when he is sitting and preparing to get up.

Le document FR-A-2 526 281 décrit une canne télescopique de longueur variable qui essaie de remédier à cet inconvénient. Elle s'allonge au fur et à mesure que le patient se lève et lui apporte une aide qui peut s'avérer efficace.Document FR-A-2 526 281 describes a telescopic rod of variable length which attempts to remedy this drawback. It lengthens as the patient gets up and gives him help that can be effective.

Cependant, comme le dispositif de déverrouillage de cette canne est situé sensiblement à mi-hauteur on ne peut utiliser qu'une seule canne car les deux mains sont nécessaires pour la mettre en oeuvre l'une pour tenir la poignée, l'autre pour déverrouiller. Or, les paraplégiques ont impérativement besoin de s'appuyer simultanément sur deux cannes, de manière à pouvoir se lever sans risquer de perdre l'équilibre ; l'utilisation d'une seule canne n'assure pas un équilibre suffisant à un paraplégique pour le mettre à l'abri des chutes par rotation.However, as the device for unlocking this cane is located approximately halfway up, only one cane can be used because two hands are necessary to implement it, one to hold the handle, the other to unlock . However, paraplegics imperatively need to lean simultaneously on two canes, so that they can get up without risking losing their balance; the use of a single cane does not provide sufficient balance for a paraplegic to protect him from falling by rotation.

On connait également (US-A-4 245 659 (SHOFNER)) une béquille dont la longueur peut être ajustée en fonction des besoins de l'utilisateur. Elle comporte un élément transversal adapté à être fixé au patient et une paire de béquilles montée sur l'élément transversal au moyen d'articulations à rotule. Chaque béquille comprend une paire de tubes cylindriques télescopiques. Le tube intérieur comporte des ondulations qui permettent de l'immobiliser par rapport au tube extérieur. Un ressort logé à l'intérieur du tube intérieur le sollicite à sortir du tube extérieur. Un élément oblong qui comporte des nervures du côté opposé à la poignée permet l'immobilisation du tube intérieur dans une position totalement ou partiellement sortie. Ces nervures sont destinées à s'engager dans les ondulations du tube intérieur. Une tige de commande logée dans la poignée permet à l'utilisateur de déverrouiller et de verrouiller l'élément oblong à l'aide de la main qui tient la poignée.There is also known (US-A-4,245,659 (SHOFNER)) a stand whose length can be adjusted according to the needs of the user. It comprises a transverse element adapted to be fixed to the patient and a pair of crutches mounted on the transverse element by means of ball joints. Each stand includes a pair of telescopic cylindrical tubes. The inner tube has undulations which allow it to be immobilized relative to the outer tube. A spring housed inside the inner tube urges it out of the outer tube. An oblong element which has ribs on the side opposite the handle allows the inner tube to be immobilized in a fully or partially extended position. These ribs are intended to engage in the undulations of the inner tube. A control rod housed in the handle allows the user to unlock and lock the oblong element using the hand holding the handle.

Il faut cependant remarquer que cette commande nécessite de la part de l'utilisateur un effort important, car il doit effectuer successivement, et presque en même temps, les trois actions suivantes :

  • - incliner le buste en avant,
  • - appuyer sur le sol avec les deux béquilles,
  • - commander le déverrouillage simultané des deux ressorts.
However, it should be noted that this command requires significant effort on the part of the user, since he must successively and almost simultaneously perform the following three actions:
  • - tilt the bust forward,
  • - press on the ground with the two crutches,
  • - order the simultaneous unlocking of the two springs.

Certains utilisateurs ne peuvent pas effectuer un tel effort. En particulier, il est difficile à un paraplégique d'utiliser ses doigts pour appuyer sur un bouton ou un levier pendant qu'il est en appui sur ses béquilles ; il peut arriver qu'il puisse déverrouilier l'un des ressorts et pas l'autre, ou bien qu' il puisse déverrouiller les deux ressorts, mais pas exactement en même temps, ce qui provoquerait sa chute.Some users cannot make such an effort. In particular, it is difficult for a paraplegic to use his fingers to press a button or lever while he is resting on his crutches; it may happen that it can unlock one of the springs and not the other, or that it can unlock the two springs, but not exactly at the same time, which would cause it to fall.

La présente invention permet de pallier cet inconvénient. La béquille telescopique décrite dans US-A-4 245 659 comprend une partie supérieure formée d'une poignée et d'un tube, un pied comportant au moins un cran de verrouillage et monté coulissant dans le tube entre une position rentrée et une position sortie, des moyens de solidarisation pour solidariser en translation le tube et le pied dans la position rentrée de ce dernier, ces moyens de solidarisation pouvant être déplacés entre une première position dans laquelle ils sont engagés avec le cran de telle manière que le pied soit solidarisé avec la partie supérieure de la béquille, et une deuxième position dans laquelle le cran est dégagé des moyens des solidarisation de telle manière que le pied puisse coulisser à l'intérieur du tube, des moyens de commande des moyens de solidarisation, des moyens élastiques qui sollicitent le pied à sortir du tube, et des moyens d'arrêt qui empêchent le pied de rentrer dans le tube à partir d'une position partiellement ou totalement sortie.The present invention overcomes this drawback. The telescopic stand described in US-A-4 245 659 comprises an upper part formed by a handle and a tube, a foot comprising at least one locking notch and slidably mounted in the tube between a retracted position and an extended position , securing means for securing in translation the tube and the foot in the retracted position thereof, these securing means can be moved between a first position in which they are engaged with the notch so that the foot is secured with the upper part of the stand, and a second position in which the notch is released from the securing means so that the foot can slide inside the tube, means for controlling the securing means, elastic means which urge the foot out of the tube, and stop means which prevent the foot from entering the tube from a partially or fully extended position.

L'invention est caractérisé en ce que la poignée est montée pivotante par rapport au tube, les moyens de solidarisation comportant une encoche pour recevoir le cran, ladite poignée pouvant être déplacée par rotation entre ladite première position et ladite deuxième position, et des moyens de blocage en rotation de la poignée dans ladite deuxième position étant prévus et étant commandés par les moyens de commande.The invention is characterized in that the handle is pivotally mounted relative to the tube, the securing means comprising a notch for receiving the notch, said handle being able to be moved by rotation between said first position and said second position, and means for locking in rotation of the handle in said second position being provided and being controlled by the control means.

De préférence, les moyens de commande des moyens de blocage sont constitués par un axe lié en rotation au tube, un alésage étant pratiqué dans ledit axe, un trou étant situé en regard de l'alésage de l'axe dans la première position de la poignée, un ergot de blocage étant déplacable en translation dans l'alésage, des moyens élastiques étant prévus pour solliciter ledit ergot à sortir de l'alésage, une gâchette de déverrouillage étant prévue dans la poignée.Preferably, the means for controlling the locking means consist of an axis linked in rotation to the tube, a bore being formed in said axis, a hole being located opposite the bore of the axis in the first position of the handle, a locking lug being displaceable in translation in the bore, elastic means being provided to urge said lug to exit the bore, an unlocking trigger being provided in the handle.

L'invention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'exécution.The invention is set out below in more detail with the aid of drawings representing only one embodiment.

La figure 1 est une vue d'ensemble d'une béquille télescopique réalisée conformément à la présente invention,FIG. 1 is an overall view of a telescopic stand produced in accordance with the present invention,

La figure 2 est une vue à échelle agrandie et partiellement en coupe de la partie inférieure de la béquille télescopique de l'invention représentée sur la figure 1.FIG. 2 is a view on an enlarged scale and partially in section of the lower part of the telescopic stand of the invention shown in FIG. 1.

Les figures 3 à 5 sont des vues en coupe qui montrent des réalisations préférentielles des moyens de solidarisation du pied avec la béquille et la commande de ces moyens de solidarisation; la figure 3 représente la béquille en position verrouillée et la figure 4 en position déverrouillée; la figure 5 est une variante des figures 1 à 4.Figures 3 to 5 are sectional views which show preferred embodiments of the means for securing the foot with the stand and the control of these securing means; Figure 3 shows the stand in the locked position and Figure 4 in the unlocked position; FIG. 5 is a variant of FIGS. 1 to 4.

La béquille de l'invention représentée sur les figures 1 et 2 comprend une partie supérieure formée d'une poignée 2 et d'un tube 4. Dans l'exemple représenté sur la figure 1, la poignée comprend la poignée 2a proprement dite ainsi que la manchette 2b destinée à servir d'appui à l'avant-bras du patient, comme dans une béquille de type classique. Cependant, la poignée 2 pourrait être constituée par un simple pommeau.The crutch of the invention shown in Figures 1 and 2 includes an upper part formed of a handle 2 and a tube 4. In the example shown in FIG. 1, the handle comprises the handle 2a proper as well as the cuff 2b intended to serve as a support for the patient's forearm , as in a conventional type crutch. However, the handle 2 could be constituted by a simple knob.

Le pied 6 comporte une extrémité inférieure 6a caoutchoutée destinée à augmenter l'adhérence avec le sol et une extrémité supérieure 6b constituée par une tige de section plus réduite que la partie principale du pied. La tige comporte à sa partie extrême un cran 6c dont la fonction sera expliquée par la suite. La différence de diamètre entre la partie 6b et le corps du pied détermine un épaulement. Cet épaulement sert d'appui pour une extrémité d'un ressort hélicoïdal 8, lequel est logé dans le tube 4. Par ailleurs, on constate que le tube 4 comporte plusieurs ouvertures 4a destinées à arrêter une gâchette 10 qui est poussée en position sortie, comme représenté sur la figure 2 par un ressort intérieur non représenté, pour empêcher le pied 6 de pénétrer à l'intérieur du tube 4.The foot 6 has a rubberized lower end 6a intended to increase the grip with the ground and an upper end 6b constituted by a rod of smaller section than the main part of the foot. The rod has at its end a notch 6c whose function will be explained later. The difference in diameter between the part 6b and the body of the foot determines a shoulder. This shoulder serves as a support for one end of a helical spring 8, which is housed in the tube 4. Furthermore, it can be seen that the tube 4 has several openings 4a intended to stop a trigger 10 which is pushed into the extended position, as shown in FIG. 2 by an interior spring not shown, to prevent the foot 6 from penetrating inside the tube 4.

On a représenté sur les figures 3 et 4 une réalisation particulière des moyens qui permettent la solidarisation du pied 6 à la partie supérieure de la béquille, ainsi qu'une réalisation particulière des moyens de commande de ces moyens de solidarisation ou de verrouillage. La poignée 2 est montée pivotante sur le tube 4 autour d'un axe 12 visible extérieurement sur la figure 1 et en coupe sur les figures 3 et 4. Un trou 14 est réalisé dans l'axe 12. Un ressort 16 et un pion 18 sont logés dans le trou 14. La poignée 2 comporte un trou 20 dont le diamètre est sensiblement égal à celui du trou 14 et un trou 22 de plus faible diamètre, le trou 22 étant coaxial au trou 20 dans lequel il débouche à l'une de ses extrémités. A son autre extrémité, il débouche à la partie extrême de la poignée 2. Une tige 24, terminée par un bouton 24a, est logée dans le trou 22. Son extrémité 24b est susceptible de prendre appui sur le pion 18 lorsque la poignée est convenablement orientée. En effet, cette poignée peut être déplacée en rotation autour de l'axe 12 d'un angle à entre une position relevée, représentée sur la figure 3, et une position abaissée, représentée sur la figure 4. Le déplacement angulaire de la poignée par rapport au tube 4 est limité par un dégagement 26 prévu dans l'axe 12 et une partie 28 faisant saillie de la poignée 2 et s'engageant dans le dégagement 26 afin de limiter le déplacement angulaire de celle-ci. La poignée 2 comporte encore un évidement 30 qui présente une encoche de verrouillage 32 adaptée à coopérer avec le cran 6c du pied 6. Sur la figure 3, le cran 6c a été représenté engagé à l'intérieur de l'encoche de verrouillage 32. Dans cette position, le pied 6 ne peut pas sortir du tube 4 sous l'action du ressort hélicoïdal 8 car celui-ci est retenu à sa partie supérieure par le cran 6c.There is shown in Figures 3 and 4 a particular embodiment of the means which allow the attachment of the leg 6 to the upper part of the stand, as well as a particular embodiment of the control means of these attachment or locking means. The handle 2 is pivotally mounted on the tube 4 around an axis 12 visible externally in Figure 1 and in section in Figures 3 and 4. A hole 14 is made in the axis 12. A spring 16 and a pin 18 are housed in the hole 14. The handle 2 has a hole 20 whose diameter is substantially equal to that of the hole 14 and a hole 22 of smaller diameter, the hole 22 being coaxial with the hole 20 in which it opens at one of its ends. At its other end, it opens at the end of the handle 2. A rod 24, terminated by a button 24a, is housed in the hole 22. Its end 24b is capable of bearing on the pin 18 when the handle is suitably oriented. Indeed, this handle can be moved in rotation around the axis 12 by an angle to between a raised position, shown in Figure 3, and a lowered position, shown in Figure 4. The angular movement of the handle by relative to the tube 4 is limited by a clearance 26 provided in the axis 12 and a portion 28 projecting from the handle 2 and engaging in the clearance 26 in order to limit the angular displacement thereof. The handle 2 also has a recess 30 which has a locking notch 32 adapted to cooperate with the notch 6c of the foot 6. In FIG. 3, the notch 6c has been shown engaged inside the locking notch 32. In this position, the foot 6 cannot leave the tube 4 under the action of the helical spring 8 because the latter is retained at its upper part by the notch 6c.

La poignée 2 peut être déplacée vers la position de verrouillage selon le sens de la flèche 34 et vers la position de déverrouillage selon le sens de la flèche 36.The handle 2 can be moved to the locking position in the direction of the arrow 34 and to the unlocking position in the direction of the arrow 36.

Sur la figure 4, la poignée 2 a été représentée en position de déverrouillage. Dans cette position, la tige 24 logée dans le trou 22 est en contact avec l'extrémité du pion 18. Le ressort hélicoïdal 16 est détendu. Le pion 18 s'engage dans le trou 20 de la poignée 2, de telle sorte qu'une rotation de celle-ci par rapport à l'axe 12, et par conséquent par rapport à la partie supérieure 4 de la béquille, est interdite. On remarque également que la partie en saillie 28 est en contact avec une face de l'évidement 26 qui forme butée. Ceci limite le mouvement de rotation de la poignée par rapport à l'axe 12. Dans cette position, le cran 6c est dégagé de l'encoche de verrouillage 32. La tige 6b peut donc se déplacer à l'intérieur du tube sous l'action du ressort hélicoïdal 8, comme schématisé par la flèche 38. La béquille prend alors la position déployée représentée sur les figures 1 et 2. La gâchettre 10 s'enclenche dans l'un des trous 4a, ce qui empêche le pied 6 de rentrer dans le tube lorsque l'on prend appui sur la béquille. Bien entendu, le tube 6 comporte plusieurs orifices 4a répartis sur sa longueur.In Figure 4, the handle 2 has been shown in the unlocked position. In this position, the rod 24 housed in the hole 22 is in contact with the end of the pin 18. The helical spring 16 is relaxed. The pin 18 engages in the hole 20 of the handle 2, so that a rotation of the latter relative to the axis 12, and therefore relative to the upper part 4 of the stand, is prohibited . It is also noted that the projecting part 28 is in contact with a face of the recess 26 which forms a stop. This limits the rotational movement of the handle relative to the axis 12. In this position, the notch 6c is released from the locking notch 32. The rod 6b can therefore move inside the tube under the action of the helical spring 8, as shown schematically by the arrow 38. The stand then takes the deployed position shown in Figures 1 and 2. The trigger 10 engages in one of the holes 4a, which prevents the foot 6 from entering in the tube when you take support on the stand. Of course, the tube 6 has several orifices 4a distributed over its length.

Si l'on veut déverrouiller la poignée, on appuie sur le bouton 24a, ce qui fait pénétrer le pion 18 dans le trou 14 prévu dans l'axe en comprimant le ressort 16 jusqu'à ce que l'extrémité du pion 18 affleure le périmètre de l'axe. Il est alors possible de déplacer en rotation la poignée 2 selon le sens de la flèche 34 (figure 3).If you want to unlock the handle, you press the button 24a, which makes the pin 18 penetrate the hole 14 provided in the axis by compressing the spring 16 until the end of the pin 18 is flush with the perimeter of the axis. It is then possible to move the handle 2 in rotation in the direction of the arrow 34 (FIG. 3).

Le fonctionnement de cette béquille est le suivant. A partir de la position déployée représentée sur la figure 1, on passe à la position rentrée en effaçant manuellement la gâchette 10 de manière à pouvoir faire pénétrer le pied 6 dans le tube 4. On place également la poignée 2 dans la position représentée sur la figure 4, c'est-à-dire de telle manière que le dégagement 30 se présente en face du cran 6c; l'encoche de verrouillage étant en position dégagée. On pousse le pied 6 à fond à l'intérieur du tube jusqu'à ce que ce cran bc se trouve en face de l'encoche de verrouillage 32, comme représenté sur la figure 4. On appuie alors sur le bouton de déverrouillage 24a pour faire pénétrer le pion 18 dans le trou 14, comme on l'a expliqué ci-dessus. Cela permet de faire pivoter la poignée 2 vers la position de verrouillage selon le sens de la flèche 34. L'encoche de verrouillage 32 pénètre dans le cran 6c. La béquille se trouve alors en position repliée et le pied 6 ne peut plus sortir du tube 4.The operation of this stand is as follows. From the deployed position shown in Figure 1, we move to the retracted position by manually erasing the trigger 10 so as to be able to penetrate the foot 6 in the tube 4. We also place the handle 2 in the position shown on the Figure 4, that is to say in such a way that the clearance 30 is presented opposite the notch 6c; the locking notch being in the released position. The foot 6 is pushed all the way inside the tube until this notch bc is opposite the locking notch 32, as shown in FIG. 4. Then the unlocking button 24a is pressed to penetrate the pin 18 into the hole 14, as explained above. This makes it possible to pivot the handle 2 towards the locking position in the direction of the arrow 34. The locking notch 32 enters the notch 6c. The stand is then in the folded position and the foot 6 can no longer leave the tube 4.

On pose alors l'extrémité 6a sur le sol et on prend appui sur la béquille de l'une ou l'autre des façons suivantes :The end 6a is then placed on the ground and the support is supported in one of the following ways:

On libère immédiatement le ressort 8 en ramenant la poignée 2 vers l'avant selon le sens de la flèche 36. L'action du ressort hélicoïdal 8 peut alors s'effectuer mais ne se produira que lorsque le patient débout soulagera simultanément son poids d'une béquille sur l'autre. La béquille atteindra sa longueur normale en une ou plusieurs étapes suivant le nombre de trous 4a prévus dans le tube de la canne pour la gâchette 10.The spring 8 is immediately released by bringing the handle 2 forwards in the direction of the arrow 36. The action of the helical spring 8 can then be carried out but will only occur when the standing patient simultaneously relieves his or her weight. one crutch on the other. The stand will reach its normal length in one or more stages depending on the number of holes 4a provided in the cane tube for the trigger 10.

On a représenté sur la figure 5 une variante de réalisation du dispositif représenté sur les figures 1 à 4. Dans cette variante, la surface de contact entre la partie supérieure 4 de la béquille et la poignée 2 n'est pas orientée vers le haut. En effet, dans le mode de réalisation représenté sur les figures 3 et 4, l'eau de pluie ou la poussière, par exemple, peuvent s'introduire à l'intérieur du mécanisme, ce qui peut conduire à son grippage ou à sa détérioration.There is shown in Figure 5 an alternative embodiment of the device shown in Figures 1 to 4. In this variant, the contact surface between the upper part 4 of the stand and the handle 2 is not oriented upwards. Indeed, in the embodiment shown in Figures 3 and 4, rainwater or dust, for example, can get inside the mechanism, which can lead to its seizure or deterioration .

Dans la variante réalisée sur la figure 5, l'eau de pluie est entraînée vers le bas par gravité sans pouvoir s'introduire à l'intérieur du mécanisme.In the variant produced in FIG. 5, the rainwater is driven downwards by gravity without being able to get inside the mechanism.

Claims (4)

1. Telescopic crutch comprising an upper part formed from a handle (2) and from a tube (4), a foot (6) having at least one locking catch (6c) and mounted slidably in the tube (4) between a retracted position and an extended position, fixing means (32) for fixing the tube (4) and the foot (6) to one another in terms of translational movement in the retracted position of the latter, these fixing means (32) being capable of being shifted between a first position, in which they are engaged with the catch (6c) in such a way that the foot (6) is fixed to the upper part of the crutch, and a second position, in which the catch (6c) is freed from the fixing means (32) in such a way that the foot can slide inside the tube (4), means (24, 24a, 24b) for controlling the fixing means (32), elastic means (8) which stress the foot (6) in the direction of its extension from the tube (4), and stop means (10) which prevent the foot (6) from being retracted into the tube (4) from a partially or completely extended position, characterized in that the handle (2, 2a, 2b) is mounted pivotably (12) relative to the tube (4), the fixing means comprising a notch (32) for receiving the catch (6c), the said handle (2) being capable of being shifted as a result of rotation between the said first position and the said second position, and means (16,18) for blocking the handle (2) in terms of rotation in the said second position being provided and being controlled by the control means (24, 24a, 24b).
2. Crutch according to Claim 1, characterized in that the means for controlling the blocking means consist of an axle (12) connected in terms of rotation to the tube, a bore (14) being made in the said axle (12), a hole (20) being located opposite the bore in the axle in the first position of the handle, a blocking pin (18) being shiftable in a translational movement in the bore (14), elastic means (16) being provided for stressing the said pin (18) in the direction of its escape from the bore (14), a release trigger (24) being provided in the handle (2, 2a).
3. Crutch according to Claim 2, characterized in that the trigger consists of a rod (24) having two ends, a first end (24b) bearing on the pin (18) and being designed to depress the latter counter to the elastic means, and a second end (24a) projecting from the handle (2, 2a).
4. Crutch according to any one of Claims 1 to 3, characterized in that the foot (6) has a rod (6b), on the end of which is formed a catch (6c).
EP19850400057 1984-01-17 1985-01-14 Telescopic crutch for handicapped persons Expired EP0149576B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8400673A FR2558057B1 (en) 1984-01-17 1984-01-17 TELESCOPIC STAND FOR PARAPLEGICS
FR8400673 1984-01-17

Publications (3)

Publication Number Publication Date
EP0149576A2 EP0149576A2 (en) 1985-07-24
EP0149576A3 EP0149576A3 (en) 1985-08-14
EP0149576B1 true EP0149576B1 (en) 1988-06-08

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ID=9300199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850400057 Expired EP0149576B1 (en) 1984-01-17 1985-01-14 Telescopic crutch for handicapped persons

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EP (1) EP0149576B1 (en)
DE (1) DE3563168D1 (en)
FR (1) FR2558057B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614529A1 (en) * 1987-04-29 1988-11-04 Levasseur Daniel Walking aid of the elbow crutch type or the like
JPH03292956A (en) * 1990-04-09 1991-12-24 Toshiaki Miyoshi Stick for handicapped person
US5036873A (en) * 1990-07-30 1991-08-06 Raul Clayton Adjustable crutch assembly
DE59903786D1 (en) * 1998-11-18 2003-01-23 Klaus Lenhart STICK LIKE SKI STICK, HIKING STICK OR THE LIKE
FR2834185B1 (en) 2001-12-31 2004-02-27 Anatole Temkine SUPPORT STICK FOR A PERSON, SUCH AS A CANE OR A STAND, AND METHODS FOR FITTING A DETERMINED PERSON WITH SUCH A STICK
FR2845894B1 (en) * 2002-10-18 2005-01-07 Henri Peyre DEVICE FOR ASSISTING THE MARKET.
WO2008046093A2 (en) * 2006-10-13 2008-04-17 University Of South Florida Folding crutch
KR20200017187A (en) * 2018-08-08 2020-02-18 현대자동차주식회사 Crutch of joint structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788793A (en) * 1955-04-01 1957-04-16 Charles E Abbott Crutch
US4245659A (en) * 1979-03-02 1981-01-20 Shofner Martin K Crutch assembly
US4252138A (en) * 1979-04-04 1981-02-24 Fowler Ivan A Crutch

Also Published As

Publication number Publication date
EP0149576A2 (en) 1985-07-24
DE3563168D1 (en) 1988-07-14
FR2558057B1 (en) 1986-12-26
EP0149576A3 (en) 1985-08-14
FR2558057A1 (en) 1985-07-19

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