FR2617701A1 - Muscular force sensor for experimentation and teaching apparatus - Google Patents

Muscular force sensor for experimentation and teaching apparatus Download PDF

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Publication number
FR2617701A1
FR2617701A1 FR8709636A FR8709636A FR2617701A1 FR 2617701 A1 FR2617701 A1 FR 2617701A1 FR 8709636 A FR8709636 A FR 8709636A FR 8709636 A FR8709636 A FR 8709636A FR 2617701 A1 FR2617701 A1 FR 2617701A1
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FR
France
Prior art keywords
blade
sensor according
muscle
face
force sensor
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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
FR8709636A
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French (fr)
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FR2617701B1 (en
Inventor
Jean-Claude Langevin
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Jeulin SA
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Jeulin SA
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Filing date
Publication date
Application filed by Jeulin SA filed Critical Jeulin SA
Priority to FR8709636A priority Critical patent/FR2617701B1/en
Publication of FR2617701A1 publication Critical patent/FR2617701A1/en
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Publication of FR2617701B1 publication Critical patent/FR2617701B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4519—Muscles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1107—Measuring contraction of parts of the body, e.g. organ, muscle
    • A61B5/1108—Measuring contraction of parts of the body, e.g. organ, muscle of excised organs, e.g. muscle preparations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/40—Animals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/42—Evaluating a particular growth phase or type of persons or animals for laboratory research
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0261—Strain gauges

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Dentistry (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physiology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Rheumatology (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

Muscular force sensor for experimentation and teaching apparatus. The sensor according to the invention carries two plates 2 and 3, one of which is stiffer than the other and imparts to the other 2 its deformation through a linkage member 7. It is thus possible, with the same apparatus to measure forces of different orders of intensity.

Description

L'observation d'un muscLe particulier d'un animal d'expérience teL qu'une grenouille nécessite un capteur connu auqueL on accroche Le musc Le à analyser. Ce capteur se présente sous la forme d'une Lame fLéchissant sous
La traction du muscle dont la déformation est prise en compte -au moyen de jauges de contrainte montées dans un pont de Wheatstone de manière connue. La flexibilité de La Lame doit être choisie en fonction de L'intensité de L'effort à enregistrer : on comprend en effet qu'une Lame destinée à
L'observation du muscle cardiaque d'une grenouille ne peut pas convenir pour L'observation d'un muscle squelettique, car elle n'offrira pas de résistance à la fLexion suffisante pour faire nature La force maximale développée Lors de la contraction de ce dernier muscle.The observation of a particular muscle of an experimental animal such as a frog requires a known sensor to which the musk to be analyzed is attached. This sensor is in the form of a flexing blade under
The traction of the muscle whose deformation is taken into account -by means of strain gauges mounted in a Wheatstone bridge in a known manner. The flexibility of the blade must be chosen according to the intensity of the effort to be recorded: we understand that a blade intended for
The observation of the heart muscle of a frog may not be suitable for the observation of a skeletal muscle, because it will not offer sufficient resistance to flexion to make nature The maximum force developed during the contraction of the latter muscular.

On est alors contraint de recourir à deux appareils de caractéristiques différentes pour faire ces mesures. We are then forced to use two devices of different characteristics to make these measurements.

La présente invention entend remédier à cet inconvénient en proposant un capteur adapté aux muscles faibles et aux muscles déveLoppant un effort important. The present invention intends to remedy this drawback by proposing a sensor suitable for weak muscles and for muscles developing a large effort.

A cet effet, L'invention a pour objet un capteur d'efforts muscuLaires pour appareil d'expérimentation, adapté à la mesure des forces engendrées par au moins deux muscles de nature différente d'un animal d'expérience, constitué par une première Lame encastrée dans un Support par
L'une de ses extrémités et pourvue de moyens d'accrochage du muscle le plus faible à observer à son autre extrémité, par des jauges de contrainte disposée sur La Lame au voisinage de son encastrement et reliées à un appareillage d'exploitation des déformations détectées.To this end, the subject of the invention is a muscular effort sensor for an experimental apparatus, suitable for measuring the forces generated by at least two muscles of a different nature from an experimental animal, consisting of a first blade. embedded in a Support by
One of its ends and provided with means for attaching the weakest muscle to be observed at its other end, by strain gauges placed on the blade in the vicinity of its embedding and connected to an apparatus for exploiting the deformations detected .

Selon l'une des caractéristiques importantes de l'invention, ce capteur comporte une seconde Lame parallèle à la première, pLus raide, encastrée par une de ses extrémités dans ledit support, et comportant a son autre extrémité un moyen d'accrochage pour le musc Le le plus fort à observer, la seconde Lame étant reliée à la première par un organe de transmission de sa déformation, prenant appui sur la première Lame. According to one of the important characteristics of the invention, this sensor comprises a second blade parallel to the first, steeper, embedded by one of its ends in said support, and comprising at its other end a means of attachment for musk The strongest to observe, the second blade being connected to the first by a member for transmitting its deformation, bearing on the first blade.

Pour que l'on puisse utiLiser La première Lame dans Les deux sens de fLexion, L'organe de transmission sera amovibLe. Dans un mode de réaLisation il est constitué simpLement par un pion fiLeté vissé dans La seconde Lame et prenant appui sur la première sur sa face tournée vers la seconde Lame. So that the first blade can be used in both directions of connection, the transmission member will be removable. In one embodiment, it simply consists of a threaded pin screwed into the second blade and resting on the first on its side facing the second blade.

Dans un autre mode de réalisation, L'organe de transmission est tel qu'iL prend appui sur L'autre face de la première Lame. On peut à cet égard prévoir comme organe de transmission une sorte de cavaLier chevauchant La première
Lame et possédant des points d'appui réglables de chaque côté de ceLle-ci
L'invention sera mieux comprise au cours de La description donnée ci-après à titre d'exemple purement indicatif et non limitatif qui permettra d'en dégager Les avantages et Les caractéristiques secondaires.In another embodiment, the transmission member is such that it rests on the other face of the first blade. In this respect, it is possible to provide a sort of straddling cavity as the transmission member. The first
Blade and having adjustable support points on each side of it
The invention will be better understood during the description given below by way of purely indicative and nonlimiting example which will make it possible to identify the advantages and the secondary characteristics.

IL sera fait référence aux dessins annexés dans lesquels
- La figure 1 est une vue généra Le du capteur seLon L'invention,
- Les figures 2, 3 et 4 iLLustrent des variantes de détaiL du capteur.Reference will be made to the accompanying drawings in which
FIG. 1 is a general view of the sensor according to the invention,
- Figures 2, 3 and 4 iLLustrate variants of the sensor details.

En se reportant à ces figures, on voit que Le capteur seLon L'invention comporte un support 1 sur lequel sont maintenues encastrées (ici bouLonnées) deux Lames 2 et 3 dont L'une 2 est pLus mince, donc plus flexible, que L'autre 3. La Lame 2 possède au voisinage du support 1 des jauges de contraintes 4 qui, montées en pont de Wheatstone de manière connue, permettent de visuaLiser La déformation de la Lame 2 et donc de déterminer L'effort qui lui est appliqué pour la faire fléchir. A son extrémité 2S, la Lame 2 possède un trou 5 permettant La fixation du muscle à observer. Ce muscle sera par hypothèse un muscle déveLoppant une force faible tel
qu'un muscle cardiaque.Referring to these figures, it can be seen that the sensor according to the invention comprises a support 1 on which are recessed (here bolted) two blades 2 and 3, one of which 2 is thinner, therefore more flexible, than the other 3. Blade 2 has, near the support 1, strain gauges 4 which, mounted in a Wheatstone bridge in a known manner, make it possible to visualize the deformation of Blade 2 and therefore to determine the force applied to it for the flex. At its 2S end, the Blade 2 has a hole 5 allowing the fixation of the muscle to be observed. This muscle will be assumed to be a muscle developing a weak force such
than a heart muscle.

La Lame 3 possède quant à elle un orifice 6- pour La fixation d'un mus c Le plus fort tel un mus c Le squelettique. Blade 3 has a 6- hole for fixing a mus c The strongest such a mus c The skeletal.

En 7 on a symboLisé un organe de Liaison des
lames 2 et 3 permettant la transmission de La déformation de
La Lame 3 à La Lame 2. On comprend qu'en utilisant La Lame 3 pour un muscLe fort, ceLLe-ci, étant d'une raideur pLus importante que La Lame 2, se déforme moins que si Le muscLe était atteLé à La Lame 2.In 7 we symbolized a Liaison body for
blades 2 and 3 allowing the transmission of the deformation of
Blade 3 to Blade 2. We understand that by using Blade 3 for a strong muscle, this one, being of greater stiffness than Blade 2, deforms less than if the muscle was hit with Blade 2.

Ainsi on peut déterminer Le rapport entre l'in- tensité d'une force qui provoque une déformation donnée de
la Lame 3 et celle d'une force qui déforme sous la même amplitude la Lame 2. L'organe 7 assurant La transmission de La
Lame 3 à La Lame 2 permet une mesure de L'effort auqueL est soumis cette Lame 2 (par Les jauges 4) et La détermination de
L'effort appLiqué à La Lame 3 en affectant Le rapport susdit.Thus we can determine the ratio between the intensity of a force which causes a given deformation of
the Blade 3 and that of a force which deforms under the same amplitude the Blade 2. The member 7 ensuring the transmission of the
Blade 3 to Blade 2 allows a measurement of the force to which this Blade 2 is subjected (by Gauges 4) and the determination of
The effort applied to Blade 3 by affecting the above report.

Pour L'appareiL, i L ne s'agit alors que d'une question d 'écheL-
le de lecture à sélectionner en même temps que L'on opère
Le choix entre Les Lames 2et 3.For the device, i L is then only a question of scale.
the reading to be selected at the same time as the operation
The choice between Les Lames 2and 3.

Les figures 2, 3 et 4 représentent des variantes de réalisation de L'organe 7 de Liaison. Dans ces trois variantes, on remarquera que cet organe est amovibLe afin de
Laisser Libre une flexion de La Lame 2 en direction de la
Lame 3.Figures 2, 3 and 4 show alternative embodiments of the link member 7. In these three variants, it will be noted that this member is removable in order to
Let Free a deflection of The Blade 2 towards the
Blade 3.

A la figure 2 L'organe 7 est simplement constitué par une vis 8 (ou un pion fileté) qui est porté au contact de la face 2b de La Lame 2 tournée vers la Lame 3. Cet organe convient pour une flexion de la Lame 3 en direction de la
Lame 2.In FIG. 2 The member 7 is simply constituted by a screw 8 (or a threaded pin) which is brought into contact with the face 2b of the blade 2 facing the blade 3. This member is suitable for bending the blade 3 towards the
Blade 2.

A la figure 3, L'organe 7 est constitué par une sorte d'étrier 9 qui est au contact de La face externe 2c de
La Lame 2, tout en étant fixé de manière démontable à La
Lame 3. Cet organe permet une mesure dans laquelle La Lame 3 est fLéchie dans une direction opposée à La Lame 2.In FIG. 3, the member 7 is constituted by a sort of stirrup 9 which is in contact with the external face 2c of
Blade 2, while being detachably attached to La
Blade 3. This member allows a measure to which La Lame 3 is bent in a direction opposite to La Lame 2.

A La figure 4 enfin, L'étrier 10 comporte un premier bras 10a au contact de La face 2b et un second bras 10b au contact de La face 2c, par l'intermédiaire d'une vis de réglage 11. On pourrait également disposer une autre vis de réglage sur Le bras 10a . Cet organe convient pour des mesures alternées. Finally, in FIG. 4, the stirrup 10 comprises a first arm 10a in contact with the face 2b and a second arm 10b in contact with the face 2c, by means of an adjustment screw 11. One could also have a another adjustment screw on arm 10a. This body is suitable for alternate measurements.

L'invention trouve une application intéressante dans le domaine du matériel d'enseignement et de mesure.  The invention finds an interesting application in the field of teaching and measuring equipment.

Claims (5)

REVENDICATIONS 1. Capteur d'efforts musculaires pour appareiL d'expérimentation, adapté à la mesure des forces engendrées par au moins deux mus c Les de nature différente d'un animal d'expérience, constitué par une première Lame (2) encastrée dans un support (1) par L'une de ses extrémités et pourvue de moyens d'accrochage (5) du muscle le plus faible à observer à son autre extrémité, par des jauges de contrainte (4) disposée sur La Lame (2) au voisinage. de son encastrement et reliées à un appareillage d'exploitation de déformations détectées, caractérisé en ce qu'il comporte une seconde Lame (3) paraL lèle à la première, plus raide, encastrée par une de ses extrémités dans ledit support (1), et comportant à son autre extr-émité un moyen d'accrochage (6) pour le muscle le plus fort à observer, la seconde Lame étant reliée à la première par un organe de transmission (7) de sa déformation, prenant appui sur La première Lame. 1. Muscular force sensor for experimental apparatus, suitable for measuring the forces generated by at least two muscles of a different nature from an experimental animal, consisting of a first blade (2) embedded in a support (1) by one of its ends and provided with attachment means (5) for the weakest muscle to be observed at its other end, by strain gauges (4) arranged on the blade (2) in the vicinity. of its embedding and connected to an apparatus for exploiting detected deformations, characterized in that it comprises a second blade (3) parallel to the first, stiffer, embedded by one of its ends in said support (1), and comprising at its other end a hooking means (6) for the strongest muscle to be observed, the second blade being connected to the first by a transmission member (7) of its deformation, bearing on the first Blade. 2. Capteur selon La revendication 1 caractérisé en ce que L'organe (7) susdit est amovibLe. 2. Sensor according to claim 1 characterized in that the above-mentioned member (7) is removable. 3. Capteur seLon La revendication 2 caractérisé en ce que L'organe (7) susdit est un pion fiLeté (8) vissé dans la seconde Lame (3) et dont L'extrémité est au contact de la face (2b) adjacente de la première Lame (2). 3. Sensor according to claim 2 characterized in that the above-mentioned member (7) is a threaded pin (8) screwed into the second blade (3) and the end of which is in contact with the face (2b) adjacent to the first blade (2). 4. Capteur selon la revendication 2 caractérisé en ce que L'organe de transmission (7) est en forme de cavalier (9) en appui sur La face (2c) la plus extérieure de la première Lame (2). 4. Sensor according to claim 2 characterized in that the transmission member (7) is in the form of a jumper (9) bearing on the outermost face (2c) of the first blade (2). 5. Capteur selon L'une quelconque des revendications précédentes, caractérisé en ce que L'organe de transmission (7) comporte un cavalier (10) dont chaque branche (10a, lOb) est au contact d'une face (2b, 2c) de la Lame (2).  5. Sensor according to any one of the preceding claims, characterized in that the transmission member (7) comprises a jumper (10) each branch (10a, 10b) of which is in contact with a face (2b, 2c) of the Blade (2).
FR8709636A 1987-07-07 1987-07-07 MUSCLE STRENGTH SENSOR FOR EXPERIMENTAL AND TEACHING APPARATUS Expired FR2617701B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8709636A FR2617701B1 (en) 1987-07-07 1987-07-07 MUSCLE STRENGTH SENSOR FOR EXPERIMENTAL AND TEACHING APPARATUS

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Application Number Priority Date Filing Date Title
FR8709636A FR2617701B1 (en) 1987-07-07 1987-07-07 MUSCLE STRENGTH SENSOR FOR EXPERIMENTAL AND TEACHING APPARATUS

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FR2617701A1 true FR2617701A1 (en) 1989-01-13
FR2617701B1 FR2617701B1 (en) 1989-11-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7966074B2 (en) * 2006-05-15 2011-06-21 Samsung Electronics Co., Ltd. Apparatus and method enhancing muscular movement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353828A1 (en) * 1976-06-02 1977-12-30 Keczely Lajos Micro-dynamometer with electric strain gauges - has deflecting strip contained in hollow body on rod with connector
EP0001127A1 (en) * 1977-09-14 1979-03-21 industrie-automation GmbH & Co. Apparatus comprising a generator for mechanical vibrations of adjustable frequenz and a receptor of vibrations for determining the natural frequency of blood vessels or tendons in a live body
WO1986004802A1 (en) * 1985-02-26 1986-08-28 Lucien Steru Method and device for evaluating the psychotropic effects of medicinal substances on animals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353828A1 (en) * 1976-06-02 1977-12-30 Keczely Lajos Micro-dynamometer with electric strain gauges - has deflecting strip contained in hollow body on rod with connector
EP0001127A1 (en) * 1977-09-14 1979-03-21 industrie-automation GmbH & Co. Apparatus comprising a generator for mechanical vibrations of adjustable frequenz and a receptor of vibrations for determining the natural frequency of blood vessels or tendons in a live body
WO1986004802A1 (en) * 1985-02-26 1986-08-28 Lucien Steru Method and device for evaluating the psychotropic effects of medicinal substances on animals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AMERICAN JOURNAL OF PHYSIOLOGY, vol. 199, no. 1, 1960, pages 157-162, US; J.J. KELLY, Jr. et al.: "Mechanical activity of rat papillary muscle" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7966074B2 (en) * 2006-05-15 2011-06-21 Samsung Electronics Co., Ltd. Apparatus and method enhancing muscular movement

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