EP3520128B1 - Pédale pour commander un dispositif à usage médical - Google Patents

Pédale pour commander un dispositif à usage médical Download PDF

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Publication number
EP3520128B1
EP3520128B1 EP17777190.4A EP17777190A EP3520128B1 EP 3520128 B1 EP3520128 B1 EP 3520128B1 EP 17777190 A EP17777190 A EP 17777190A EP 3520128 B1 EP3520128 B1 EP 3520128B1
Authority
EP
European Patent Office
Prior art keywords
cover element
actuating device
height
offset section
height offset
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.)
Active
Application number
EP17777190.4A
Other languages
German (de)
English (en)
Other versions
EP3520128A1 (fr
Inventor
Etienne Lebreton
Florent Jean-Claude Georges Beani
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.)
Ferton Holding SA
Original Assignee
Ferton Holding SA
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Filing date
Publication date
Application filed by Ferton Holding SA filed Critical Ferton Holding SA
Publication of EP3520128A1 publication Critical patent/EP3520128A1/fr
Application granted granted Critical
Publication of EP3520128B1 publication Critical patent/EP3520128B1/fr
Active legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/26—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/16—Operating parts, e.g. push-button adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/01—Off centre actuation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/08—Actuators composed of different parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/032—Operating force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/03—Avoiding erroneous switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/003—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with more than one electrically distinguishable condition in one or both positions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/024—Avoid unwanted operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot

Definitions

  • the present invention relates to a foot pedal for controlling a medical device, in particular a dental device.
  • foot pedals are from the prior art, for example from the US 7 439 463 B2 , well known and are intended to guarantee a treating physician a scope of action during the treatment that allows him to continue the treatment without interrupting it for manual modifications to the medical device. Instead of interrupting treatment, he makes modifications to the medical device using the foot pedal.
  • Essential components of the foot pedal are a housing with a housing base and a cover element which is mounted so that it can be moved in height along an actuating device and usually also tilted or tilted relative to the housing base.
  • the cover element rests on an actuating device arranged centrally below the cover element and displaceable along the actuation direction, so that the cover element can also be tilted to each side (cf. DE 20 2006 015 718 U1 ).
  • the actuating device serves as a lever point or lever surface.
  • a foot pedal according to the preamble of claim 1 in which a rocker-mounted rocker element is provided. By pressing one end of the rocker element, it can be moved as far as a stop in order to initiate a first functionality of a dictation machine. By further pressure on the other end of the rocker link, the require second functionality.
  • the U.S. 3,663,772 A shows a similar foot pedal in terms of functionality.
  • the actuation device is mounted so that it can be shifted in height, with a height offset of the actuation device taking place both when stepping onto the edge area and when stepping onto the central area.
  • the height offset of the actuating device when stepping on the edge area is supported by the fact that, when tilting, the movement of the cover element upwards on the side opposite the actuated edge area, ie. H. in a direction opposite to the direction of actuation, is limited.
  • the U.S. 7,439,462 a first switch to initiate a first functionality on the medical device and a second switch to initiate a second functionality on the Medical device designed in such a way that the first switch in a first height offset section and the second switch in a second height offset section adjoining the first height offset section can be actuated one after the other by the actuating device moving in the actuating direction.
  • the predeterminable angle of inclination is the maximum possible angle of inclination of the cover element, which is achieved on the one hand by at least some sections of the cover element resting on the housing base and on the opposite side by the cover element resting against at least one radial projection of the housing, which protrudes radially outward and a Preventing the cover element from lifting upwards is defined.
  • the predeterminable angle of inclination is generally an angle range which lies between a first angle and the maximum possible angle, e.g. between 5 ° and 15 °, preferably between 6 ° and approximately 10 °.
  • the invention provides that the actuation of the second switch is made more difficult because on the one hand the actuating device must be transferred to the second state before it can reach the second height offset section, and on the other hand the foot pedal in this way is designed or dimensioned in such a way that the actuating device remains exclusively within the first height offset section, when the cover element has assumed a maximum possible angle of inclination.
  • the latter robs the actuating device of the possibility of actually causing a transition to the second state in order to get into the second height offset section when the cover element has assumed a maximum possible angle of inclination. This advantageously reduces the likelihood of inadvertent triggering of the second functionality, in particular if a user acts with his foot on the edge region of the cover element.
  • the foot pedal is designed, in particular, in such a way that the cover element cannot be displaced further along the actuation direction when the maximum possible angle of inclination determined by the design of the foot pedal is assumed.
  • the actuating device is designed according to the invention in such a way that an additional force is required for a transition from the first state to the second state. For example, a restoring force of a spring is to be overcompensated for this, the restoring force of which does not counteract a movement of the actuating device in the first height offset section.
  • the cover element rests on the actuating device in the central area of the cover element, so that the cover element can be tilted to either side. Furthermore, it is conceivable that the cover element and / or the housing is completely rotationally symmetrical with respect to an axis of symmetry running parallel to the actuating device.
  • the cover element rests in sections on the housing base when the maximum possible angle of inclination is taken.
  • the actuating device so that the actuating device is transferred to the second height offset section.
  • the foot pedal can assume precisely one position in every possible tilting direction, in which the angle of inclination is maximum.
  • the housing base has a circumferential shoulder facing the cover element, on which the inclined cover element strikes when the predeterminable, for example the maximum angle of inclination is assumed.
  • the cover element has a limited offset height in the edge region or on the outer circumference, which determines the predeterminable, for example the maximum angle of inclination.
  • the maximum angle of inclination is determined by the diameter of the foot pedal.
  • the foot pedal or the cover element preferably has a diameter between 13 cm and 25 cm.
  • the offset height in the axial direction is limited, for example, in that a circumferential collar which is directed radially inward on the underside of the cover element engages in a receiving area of the housing that is open radially outward.
  • This receiving area is preferably delimited in a direction running parallel to the actuation direction on one side by projections protruding radially from a housing wall and on the other side by the housing base, in particular the circumferential shoulder of the housing base.
  • the maximum inclined cover element then rests on one side on at least one of the projections and on the other side in sections on the housing base.
  • a height offset of the actuating device caused by the assumption of the predeterminable, for example the maximum inclination position is smaller than an extension of the first height offset section. This makes it possible to ensure that the actuating device remains within the first height offset section when the cover element is at its predeterminable, for example the maximum Assumes the angle of inclination and thereby carries the actuating device.
  • the first height offset section is dimensioned starting from an initial position which the cover element assumes when no external force acts on the cover element.
  • the actuating device is arranged adjacent to the second height offset section when the maximum possible angle of inclination of the cover element is assumed.
  • the cover element rests in sections on the housing base at a contact point and would have to be pivoted further about this contact point for a further height offset of the actuating device. This is counteracted by the actuating device, for the transfer of which into the second state an additional expenditure of force would be required, whereby an unintentional actuation of the second switch is advantageously made more difficult.
  • the cover element acts as a lever arm pivotable about the contact point (on the housing base), on the side of which is remote from the contact point or in the center of which the actuating device is arranged, the actuating device continuing the pivoting movement with a force necessary for the transfer of the first is required in the second state counteracts.
  • the user In order to reduce the effort required to continue the pivoting movement, the user must lengthen the actuation length of the lever arm that can be pivoted around the contact point by moving the foot further in the direction of the center. If he first actuates the cover element at the edge, i.e.
  • the lever length is short and the usual effort exerted by means of a foot is not sufficient to overcome the restoring force of the actuating device that would be necessary to move into the to get to the second state.
  • the offset height in the edge area and an extension of the first height offset section are designed such that their size ratio limits the arrangement of the actuating device when the maximum possible angle of inclination of the cover element is assumed to the first height offset section.
  • the extension of the first height offset section is preferably designed as a function of the offset height. This makes it possible to prevent the actuating device from reaching the second height offset section when the cover element is inclined to the maximum.
  • the ratio of the offset height to the extent of the first height offset section is between 0.8 and 1, preferably between 0.9 and 1 and particularly preferably between 0.95 and 1.
  • a projection is provided on the housing bottom to define the extension of the first height section.
  • the projection is designed in such a way that it comes into contact with an underside of the actuation device in order to transfer the actuation device from the first to the second state.
  • an extension of the first height offset section can be established in an uncomplicated manner in that the height of the projection is adapted accordingly.
  • the material from which the projection is made preferably differs from the material from which the rest of the housing bottom is made.
  • the projection is made of a load-bearing material, such as a metal or a fiber-reinforced plastic.
  • the actuating device is connected to the housing bottom via a first spring, wherein the Actuating device comprises a first element and a second element, wherein a second spring is arranged between the first element and the second element, wherein the actuating device is designed such that the first spring is elastically deformed during the movement of the actuating device in the first height offset section and in the second Height offset section, the second spring is elastically deformed.
  • the first spring advantageously ensures that the actuating device and the cover element are returned to an initial position when there is no force acting on the cover element.
  • the second spring it is possible, in particular, to set a force that has to be applied and which is required for the transition of the actuating device from the first state to the second state.
  • first element and the second element are pushed together in the second state or during the transition from the first to the second state.
  • the second element is preferably mounted in the first element in a longitudinally movable manner.
  • first element and the second element are designed in the form of a sleeve or cup and are placed inside one another.
  • a spring force of the second spring is more than twice, preferably more than three times and particularly preferably essentially five times as great as the spring force of the first spring.
  • first switch and the second switch are offset in height relative to one another. This will be beneficial dispenses with a complicated actuation mechanism which would otherwise be required if the first switch and the second switch were arranged at the same height in the direction of actuation.
  • the actuating device preferably moves in an interspace between the first switch and the second switch, which are, for example, opposite one another.
  • the housing is designed as an insert in the form of a housing base body which is connected to the housing base.
  • the housing base is preferably attached to the housing via a magnetic release mechanism.
  • the housing base comprises a magnet which interacts with a magnetic part of the housing or the housing base body.
  • the magnetic release mechanism is preferably arranged below the actuating device.
  • a projection on which the actuating device comes into contact when moving along the actuating direction forms the magnetic part of the housing, which holds the housing bottom with its magnets in the assembled state.
  • the magnetic release mechanism allows uncomplicated detachment of the housing bottom from the housing. Furthermore, the magnetic release mechanism, if it is attached centrally to the housing base, as shown in the figures, enables a rotational movement of the housing base body and the cover element connected to it around the housing base, which is usually adhesively connected to the floor.
  • the opposing surfaces of the magnet and the magnetic part of the housing, such as the projection are mounted in such a way that a rotating movement is made possible. Smooth surfaces that slide on one another are preferred.
  • the housing is preferably designed on its side facing the housing base in such a way that a compartment for energy storage cells is freely accessible is when the case base is separated from the case. Together with the magnet release mechanism, changing the energy storage cells can be simplified, which is regularly necessary for the supply of the transmitter in the housing.
  • Figure 1 is a schematic exploded view of a foot pedal 1 according to a preferred embodiment of the present invention.
  • the foot pedal 1 is one which is provided for controlling a medical device, preferably a dental device. Settings are to be made on the medical device by means of the foot pedal 1 so that the user does not have to interrupt his work, for example a treatment measure on the patient, in order to operate the medical device manually.
  • FIG. 1 An essential part of the Figure 1
  • the illustrated embodiment is also a cover element 10, which is opposite to the housing base 22 along a Operating direction B is vertically displaceable and mounted inclinable with respect to the housing base 22.
  • the cover element 10 rests centrally on an actuating device 15. Because it rests centrally on the actuation device 15, the cover element 10 can be tilted or inclined on all sides, and the contact between the cover element 10 and the actuation device 15 causes the actuation device 15 to be displaced in the actuation direction B when a force is applied, in particular with the foot , takes place on the cover element 10, in particular essentially vertically.
  • the actuating device can be offset in height in actuating direction B both when stepping onto the edge area and when stepping onto the central area.
  • the invention understands a height offset to mean a displacement of the actuating device 15 along the actuating direction B, which as a rule is directed essentially vertically from above in the direction of the floor.
  • a first spring 31 is provided, which is connected on the one hand to the housing base 22 and on the other hand to the actuating device 15, in particular to a first element 51 of the actuating device 15.
  • the height offset of the actuating device 15 which is caused by stepping on the cover element 10 with the foot. If, for example, a force acts on an edge of the cover element 10, the cover element 10 is tilted about a lever point provided by the actuation device 15 or a lever surface provided by the actuation device 15. In addition to the inclination, a height offset of the vertically displaceable actuating device 15 is also caused.
  • the height offset of the actuating device when stepping on the edge area is supported by the fact that, when tilting, the movement of the cover element upwards on the side opposite the actuated edge area, ie into a the direction opposite to the direction of actuation, is limited.
  • the cover element 10 when the cover element 10 is tilted, the cover element comes into contact with a radial projection 21 on the opposite side in a direction opposite to the actuation direction, so that the actuation device 15 is carried along by the cover element 10 when the cover element 10 is tilted.
  • This height offset caused by tilting is, however, smaller than that caused by a force of the same magnitude when the force acts on the cover element 10 above the actuation device 15 and parallel to the actuation direction B, i.e. more in the central middle area of the cover element 10.
  • the different height offsets can be used for the targeted differentiation between two types of actuation of the foot pedal 1, as a result of which different functionalities can be assigned to the different types of actuation.
  • a first functionality can be assigned to an occurrence on an edge area and the tilting of the cover element 10 caused thereby
  • a second functionality can be assigned to an occurrence on a central area of the cover element.
  • a reference plane E is defined by the lower edge of the cover element 10 and, in the unloaded state, is essentially parallel to the plane of the floor.
  • the predeterminable angle of inclination ⁇ is the angle between this reference plane E and the plane which is defined by the lower edge of the cover element 10 and which occurs when the cover element is tilted (see FIG Figure 2c ).
  • FIGs 2a to 2d are sectional views of the foot pedal Fig. 1 shown in different operating states.
  • the starting position is shown in which the cover element 10 is when no external force acts on the cover element 10.
  • a first switch 41 and a second switch 42 are provided, which are arranged vertically offset from one another in the housing, the first switch 41 when the actuating device 15 is moved in actuation direction B within a first height offset section and the second switch 42 can be actuated within a second height offset section.
  • the second height offset section viewed in the direction of actuation B, directly adjoins the first height offset section.
  • Figures 2b and 2c show the cover element 10 in the first state, once without tilting or inclination ( Figure 2b ) and another time ( Figure 2c ) in the first state, which is typically set when stepping on the edge, namely tilted, with the predeterminable angle of inclination ⁇ of the cover element.
  • the actuating device is always located within the first height offset section.
  • the actuation of the first switch 41 and the second switch 42 takes place, for example, via pins 33 which are displaceable perpendicular to the actuation direction B and which, by means of spring elements (not shown), against an outside 17 of the actuation device 15, in particular against an outside 17 of a first element 51 of the actuation device 15, are biased.
  • the outside 17 of the actuating device 15 has a stepped outer contour, for example in the form of a projection or a ramp. When the actuating device 15 is moved in the actuating direction B, this outer contour interacts with the displaceable pins 33 in such a way that the pins 33 move away to the side, ie. H. along a direction running perpendicular to the actuation direction B and against a restoring force of the spring elements, are pressed radially outward so that the pins 33 can actuate the first switch 41 or second switch 42.
  • the first switch 41 and the second switch 42 are arranged offset in height from one another, the first switch 41 and the second switch 42 can be moved in the actuating direction B by moving the Actuating device 15 can be switched one after the other, in particular depending on the respective height offset of the actuating device 15.
  • the control device is preferably designed in such a way that when the second switch 42 is actuated immediately after the first switch 41 is actuated, the second functionality is not initiated. This can also prevent the second functionality from being triggered in the event of an unintentional occurrence of the central area of the actuating device, although no triggering or only triggering of the first functionality is intended by the user.
  • this function can also be omitted, ie the second functionality is always activated as soon as the second switch 42 has been activated, regardless of a specific time span between the activation of the first and the second switch 41 or 42 Activation of the two switches 41, 42 triggered immediately one after the other does not cause any functionality at all.
  • the actuating device 15 is designed in such a way that an entry into the second height offset area required for actuating the second switch 42 can only be carried out by the actuating device 15 when the actuating device 15 is operated by a first state in a second state is transferred. It is provided in particular that the transfer of the actuating device 15 from the first state to the second state is linked to an additional force. I. E. In order to transfer the actuating device into the second state, an additional expenditure of force is required, which must first be applied in order to bring about the transition from the first height offset section to the second height offset section.
  • a second spring 32 is arranged between a first element 51 and a second element 52 of the actuating device 15 for this purpose.
  • the first element 51 and the second element 52 of the actuating device 15 are mounted so as to be displaceable with respect to one another, wherein they are kept at a distance from one another in the first state by the relaxed second spring 32.
  • the actuating device 15 is in the first height offset section in a pushed apart state.
  • a force that overcompensates the restoring force of the second spring 23 and pushes the first element 51 and the second element 52 together must be applied.
  • the actuating device 15 is shown in the second state. Only by pushing the first element 51 and the second element 52 together can a transition from the first height offset section to the second height offset section be brought about for the actuating device 15.
  • the foot pedal 1 is designed in such a way that the actuating device 15 is always arranged within the first height offset section when the cover element 10 assumes the maximum possible angle of inclination ⁇ in a tilted state.
  • the actuating device 15 is deprived of the possibility of being transferred from the first state to the second state when the predeterminable, for example the maximum angle of inclination ⁇ of the cover element is assumed.
  • the maximum possible angle of inclination ⁇ is determined by a limited offset height V in the edge region of the cover element 10.
  • the actuating device 15 is designed in such a way that the height offset is not sufficient to assume a position in which an additional force acts on the edge area of the cover element 10 a transition to the second state is possible. It is provided in particular that the actuating device 15 is designed in such a way that a height offset is associated with the alignment of the cover element 10 in the position associated with the predeterminable, for example the maximum angle of inclination, is smaller than or equal to the first height offset section.
  • the extent of the first height offset section is dimensioned accordingly by a distance, measured in actuation direction B, between the second element 52 and a projection 16 of the housing base 22 arranged below the second element 52.
  • the projection 16 serves in particular to support the second element 52 when the first element 51 and the second element 52 are pushed together, ie when the actuating device 15 is transferred from the first state to the second state. In other words: without coming into contact with the projection 16, the actuating device 15 cannot be transferred to the second state and the actuating device 15 remains within the first height offset section and thus cannot actuate the second switch 42.
  • no further lowering of the actuating device 15 in the actuating direction B while maintaining the angle of inclination is conceivable if the cover element 10 rests on the housing base 22 when the predeterminable, for example the maximum angle of inclination a is assumed.
  • the actuating device preferably rests with the second element 52 on the projection 16 when the cover element 10 is inclined to the maximum.
  • a force is required to transfer the actuating device 15 in the second state increases until finally, when the outer edge area is actuated, a transition to the second state with normal foot force is shot out.
  • the user In order to get into the second state, the user must accordingly direct his force application specifically to the central area of the cover element 10, whereby the probability of accidentally actuating the second switch 42 when a force is applied to the edge area can be reduced or even excluded.
  • the housing 20 is designed as an insert in the form of a housing base body which is connected to the housing base 22 and which has the radial projections 21.
  • the housing base 22 is preferably released via a magnetic release mechanism 50 ( Fig. 2a ) bound to the housing 20.
  • the housing base 22 comprises a magnet which interacts with a magnetic part of the housing 20 or the housing base body.
  • the magnetic release mechanism 50 is preferably arranged below the actuating device 15.
  • the projection 16, on which the actuating device 15 comes into contact when moving along the actuating direction B forms the magnetic part of the housing 20, which holds the housing bottom 22 with its magnets in the assembled state.
  • the magnetic release mechanism 50 allows an uncomplicated release of the housing bottom 22 from the housing 20. Furthermore, the magnetic release mechanism 50, if it is, as in FIG Figure 2a shown, is attached centrally to the housing base 22, a rotational movement of the housing base body and the cover element 10 connected to it around the housing base 22, which is usually adhesively connected to the floor.
  • the opposing surfaces of the magnet and of the magnetic part of the housing 20, such as, for example, the projection 16, are mounted in such a way that a rotating movement is made possible. Preferred are smooth surfaces that slide on each other.
  • the housing is preferably designed on its side facing the housing base in such a way that a compartment for energy storage cells is freely accessible when the housing base 22 is separated from the housing 20. Together with the magnet release mechanism 50, it is possible to simplify the change of the energy storage cells, which is regularly required, for example, for the supply of a transmission device in the housing.
  • the second state cannot be reached when the cover element 10 has assumed the predetermined, in particular a maximum possible angle of inclination ⁇ . Once this state has been reached and the cover element 10 is pressed with a force acting vertically away from the edge, the latter will incline, ie the inclination angle a will decrease again until it, with the stop on the housing base 22 as the fulcrum, finally reaches stage two triggers.
  • the inventive tilting option with a stop ie with the maximum possible angle of inclination, ensures that when a force is applied to the edge (this is always the case when the user's foot is placed on the side because this edge protrudes) only switch 41 is activated.
  • the pivot point moves (jumps) from the opposite point of the cover element 10, i.e. from the radial projections 21 to the stop, i.e. to where the cover element 10 rests on the housing base 22.
  • the cover element 10 can now only be pressed further down, i.e. the angle of inclination a is reduced when the force acts behind the pivot point, i.e. between the stop and the opposite side. Since the upper edge of the cover element 10 lies above or even behind, i.e. on the side facing away from the center of the new pivot point, the cover element 10 cannot be moved any further.
  • the central restoring forces are taken over by the two springs 31, 32.
  • Spring 31 has a spring constant of approximately 1 N / mm and a preload of 20 N. With a central force of 22.5 N, for example, the cover element 10 is pressed down 2.5 mm and triggers the first switch 41. If the cover element 10 is further loaded, the second spring 32 is also pressed in parallel at 3 mm and 23 N. This spring has a spring constant of 5 N / mm and is preloaded with 25 N. In order to now press in the cover element 10 3.1 mm, a force of 48.6 N (23.1 N + 25.5 N) must therefore be applied. The second switch 42 is activated at 5.3 mm.
  • the foot pedal is now operated to such an extent that the cover element 10 strikes the housing bottom 22 on the loaded side, a distance of 5.5 mm is covered, the force required for this is approximately 11.4 N and the first switch 41 is triggered.
  • the second spring 32 is not yet loaded.
  • the lower element 52 then lies precisely on the projection 16 on. By pressing the outer lateral edge further, the second switch 42 cannot be triggered for geometric reasons, as explained above.
  • a pressure point is required on the cover element 10, i.e. at a distance from the edge of the cover element 10, and not on its edge.
  • the trigger values for the second switch 42 can be calculated as a function of the diameter of the cover element 10 and the position of the pressure point. Due to the lever, the values of 61.8 N are lowest with central actuation (see calculations above) and increase significantly with the distance of the pressure point from the center of the cover element. At the edge of the cover element 10, viewed mathematically, these go to infinity, since the force acts vertically on the pivot point.
  • the triggering force for the second switch 42 at a pressure point at a distance of, for example, 2 cm from its edge is at least 232 N.
  • an unintentional triggering is almost impossible.
  • the user is therefore forced to press the foot pedal as centrally as possible in order to activate the second function.
  • the first function can be triggered with low forces of 11.4 to 22.8 N (depending on the pressure position) at any point on the cover element 10.
  • a typical foot pedal according to the invention has a diameter of 13-25 cm and a top height of about 4 cm.

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Mechanical Control Devices (AREA)

Claims (8)

  1. Pédale (1) pour commander un appareil médical, en particulier un appareil de dentisterie, comprenant
    -- un boîtier (20) présentant un fond de boîtier (22),
    -- un élément de couvercle (10) qui est monté de manière à pouvoir être déplacé en hauteur par rapport au fond de boîtier (22) le long d'une direction d'actionnement (B) et à pouvoir être incliné par rapport au fond de boîtier (22),
    -- un premier commutateur (41) pour provoquer une première fonctionnalité au niveau de l'appareil médical et un second commutateur (42) pour provoquer une seconde fonctionnalité au niveau de l'appareil médical, et
    -- un dispositif d'actionnement (15) qui peut être déplacé en hauteur le long de la direction d'actionnement (B) et qui, lors d'un mouvement dans la direction d'actionnement (15), actionne le premier commutateur (41) à l'intérieur d'une première section de décalage en hauteur et qui actionne le deuxième commutateur (42) à l'intérieur d'une deuxième section de décalage en hauteur,
    le dispositif d'actionnement (15) étant conçu de manière à se trouver dans un premier état dans la première section de décalage en hauteur et à se trouver dans un deuxième état dans la deuxième section de décalage en hauteur, la pédale (1) étant conçue de telle sorte que, selon un angle d'inclinaison prédéfinissable (α) de l'élément de couvercle (10), le dispositif d'actionnement (15) est toujours disposé à l'intérieur de la première section de décalage en hauteur, et, afin de rendre plus difficile la transition de la première section de décalage en hauteur à la deuxième section de décalage en hauteur, le dispositif d'actionnement (15) est conçu de telle sorte qu'une application supplémentaire de force est nécessaire pour une transition entre le premier état et le deuxième état,
    l'angle d'inclinaison prédéfinissable (α) est l'angle d'inclinaison maximal possible de l'élément de couvercle (10), qui est défini d'un côté par l'application au moins locale de l'élément de couvercle (10) contre le fond de boîtier (22) et du côté opposé par l'application de l'élément de couvercle (10) contre au moins une saillie radiale (21) du boîtier (20), et
    le dispositif d'actionnement (15) est relié au fond de boîtier (22) par l'intermédiaire d'un premier ressort (31), et
    le dispositif d'actionnement (15) comprend un premier élément (51) et un deuxième élément (52),
    caractérisé en ce que
    un deuxième ressort (32) est disposé entre le premier élément (51) et le deuxième élément (52), le dispositif d'actionnement (15) étant conçu de telle sorte que, lors du mouvement du dispositif d'actionnement (15) dans la première section de décalage en hauteur, c'est le premier ressort (51) qui est déformé élastiquement, et dans la deuxième section de décalage en hauteur, c'est le deuxième ressort (52) qui est déformé élastiquement, le deuxième ressort (32) n'étant pas encore chargé dans la première section de décalage en hauteur.
  2. Pédale (1) selon la revendication 1,
    dans laquelle, dans la zone de bord, l'élément de couvercle (10) présente une hauteur de décalage (V) limitée, qui détermine l'angle d'inclinaison prédéfinissable, par exemple maximal.
  3. Pédale (1) selon l'une des revendications précédentes,
    dans laquelle le dispositif d'actionnement (15) est disposé au voisinage de la deuxième section de décalage en hauteur lorsque l'élément de couvercle (10) prend l'angle d'inclinaison maximal possible.
  4. Pédale (1) selon la revendication 2,
    dans laquelle la hauteur de décalage (V) dans la zone de bord et une extension de la première section de décalage en hauteur sont conçues de telle sorte que leur rapport de taille restreint la disposition du dispositif d'actionnement (15) à la première section de décalage en hauteur lorsque l'élément de couvercle (10) prend l'angle d'inclinaison maximal possible.
  5. Pédale (1) selon la revendication 4,
    dans laquelle le rapport de la hauteur de décalage (V) dans la zone de bord sur l'extension de la première section de décalage en hauteur est compris entre 0,8 et 1, de préférence entre 0,9 et 1 et de manière particulièrement préférée entre 0,95 et 1.
  6. Pédale (1) selon l'une des revendications précédentes,
    dans laquelle le fond de boîtier (22) présente une saillie (16) au-dessous du dispositif d'actionnement (15), la saillie (16) déterminant l'extension de la première section de décalage en hauteur.
  7. Pédale (1) selon l'une des revendications précédentes,
    dans laquelle une force élastique du deuxième ressort (32) est plus de deux fois, de préférence plus de trois fois et de manière particulièrement préférée sensiblement cinq fois plus grande que la force élastique du premier ressort (31).
  8. Pédale (1) selon l'une des revendications précédentes,
    dans laquelle le premier commutateur (41) et le deuxième commutateur (42) sont décalés en hauteur l'un par rapport à l'autre.
EP17777190.4A 2016-09-30 2017-09-14 Pédale pour commander un dispositif à usage médical Active EP3520128B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016118602.3A DE102016118602B4 (de) 2016-09-30 2016-09-30 Fußpedal zum Steuern eines medizinischen Geräts
PCT/EP2017/073181 WO2018059960A1 (fr) 2016-09-30 2017-09-14 Pédale pour commander un dispositif à usage médical

Publications (2)

Publication Number Publication Date
EP3520128A1 EP3520128A1 (fr) 2019-08-07
EP3520128B1 true EP3520128B1 (fr) 2021-10-06

Family

ID=59982343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17777190.4A Active EP3520128B1 (fr) 2016-09-30 2017-09-14 Pédale pour commander un dispositif à usage médical

Country Status (5)

Country Link
US (1) US10777373B2 (fr)
EP (1) EP3520128B1 (fr)
DE (1) DE102016118602B4 (fr)
ES (1) ES2902142T3 (fr)
WO (1) WO2018059960A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11484724B2 (en) 2015-09-30 2022-11-01 Btl Medical Solutions A.S. Methods and devices for tissue treatment using mechanical stimulation and electromagnetic field
USD1001749S1 (en) * 2020-05-13 2023-10-17 University Of South Florida Base plate for a foot pedal
USD961532S1 (en) * 2020-08-10 2022-08-23 Dhupar Innovations, LLC Foot switch for a medical device

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Publication number Priority date Publication date Assignee Title
DE6603334U (de) * 1969-05-22 1969-09-04 Grundig Emv Fussschalter fuer ein diktiergeraet
DE1942495C2 (de) * 1969-08-21 1971-11-04 Grundig Emv Fusschalter fuer ein diktiergeraet insbesondere magnetton bandgeraet
US3980848A (en) * 1972-10-16 1976-09-14 Carl Zeiss-Stiftung Device for the remote control of motions and operations of microsurgical equipment
DE2814869A1 (de) * 1978-04-06 1979-10-11 Olympia Werke Ag Fusschalter zur steuerung der betriebszustaende von naeh-, diktier- und dergleichen maschinen
JP3219353B2 (ja) * 1994-08-26 2001-10-15 アルプス電気株式会社 回転操作型スイッチおよび多方向入力装置
US7439463B2 (en) * 2006-01-17 2008-10-21 Dentsply International Inc. Foot switch for activating a dental or medical treatment apparatus
US7446271B2 (en) 2006-02-10 2008-11-04 Siemens Energy & Automation, Inc. Circuit breaker interlock devices, systems, and methods
DE202006015718U1 (de) 2006-07-14 2007-01-04 steute Schaltgeräte GmbH & Co. KG Fußschalter mit Bodenkontakten
US20090272221A1 (en) 2008-05-01 2009-11-05 Freedom Special Technologies, Inc. Wireless foot pedal controller for welding system
KR101038925B1 (ko) * 2009-03-12 2011-06-03 국립암센터 회전 3자유도를 가지는 발판입력장치
EP2568914B1 (fr) 2010-04-12 2017-05-17 Dentsply International Inc. Control-commande d'un levier de commande à pied dentaire sans fil

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Also Published As

Publication number Publication date
EP3520128A1 (fr) 2019-08-07
US20200043682A1 (en) 2020-02-06
WO2018059960A1 (fr) 2018-04-05
DE102016118602A1 (de) 2018-04-05
DE102016118602B4 (de) 2021-02-04
ES2902142T3 (es) 2022-03-25
US10777373B2 (en) 2020-09-15

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