EP2083739A1 - Couplage entre une partie de pièce à main médicale et un tube d'alimentation - Google Patents

Couplage entre une partie de pièce à main médicale et un tube d'alimentation

Info

Publication number
EP2083739A1
EP2083739A1 EP07819494A EP07819494A EP2083739A1 EP 2083739 A1 EP2083739 A1 EP 2083739A1 EP 07819494 A EP07819494 A EP 07819494A EP 07819494 A EP07819494 A EP 07819494A EP 2083739 A1 EP2083739 A1 EP 2083739A1
Authority
EP
European Patent Office
Prior art keywords
coupling
handpiece part
handpiece
sliding element
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07819494A
Other languages
German (de)
English (en)
Inventor
Bernhard Kuhn
Thomas Classen
Alexander Klee
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.)
Kaltenbach and Voigt GmbH
Original Assignee
Kaltenbach and Voigt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaltenbach and Voigt GmbH filed Critical Kaltenbach and Voigt GmbH
Publication of EP2083739A1 publication Critical patent/EP2083739A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/088—Illuminating devices or attachments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/04—Supports for holding tooth drills in order of use

Definitions

  • the present invention relates to a coupling for the production of a detachable connection between a medical, in particular a dental handpiece part and a supply hose and for the transmission of electricity and possibly other supply media from the supply hose to the handpiece part.
  • a coupling which consists of two coupling elements, wherein one of the two coupling elements is arranged on the handpiece part and the other on the supply hose.
  • a union nut arranged on one coupling element must be screwed onto a thread on the other coupling element.
  • a coupling of the type described above is known, for example, from EP 0 185 290 B1.
  • annular channels are provided for the transmission of air and water, which actually allow media transfer in any rotational position, however, u.a. two frontal contact pairs used. In this case, a corresponding current transfer is possible only in a suitable rotational position of the two coupling elements, which - as described above - makes handling difficult.
  • the present invention is therefore based on the object to provide a corresponding coupling with which in particular an electrical connection between a handpiece part and a supply hose can be made easier.
  • a coupling for producing a detachable connection between a medical, in particular a dental handpiece part and a supply hose and for the transmission of electricity and possibly further supply media from the supply hose to the handpiece part.
  • the coupling comprises a first and a second coupling element, wherein one of the two coupling elements can be arranged on the supply hose and the other on the handpiece part.
  • At least one guide element is arranged on one of the two coupling elements and formed on the other coupling element at least one Einzhouöffhung into which the guide element can be inserted axially, wherein the two coupling elements with inserted or at least partially introduced guide element before reaching a mutual rotational position in which a predetermined coupling position is taken, can be rotated relative to each other about an axis of rotation.
  • the two coupling elements are locked in the axial direction with completely inserted guide element.
  • the handpiece part can comprise a medical, in particular a dental, treatment instrument, that is, for example, an angle piece or a straight handpiece, on which a treatment tool, for example in the form of a drill or the like, is arranged at a front end.
  • a motor for example an electric motor for driving the treatment tool can be provided.
  • the supply media may be air, in particular compressed air or
  • Cooling air and / or a cooling medium for example in the form of water or a spray and / or electricity and / or light act.
  • the coupling element which can be arranged on the supply hose, can in particular be permanently connected to the supply hose, so that there is no separation between the supply hose and the corresponding coupling element for the daily medical handling.
  • the corresponding coupling element can thus be provided so to speak "inseparable" on the supply hose.
  • axial or “axial direction” that direction is referred to, which extends in coupled connection between the handpiece part and the supply hose in the region of the coupling in the middle in the direction of the main axis of the (unbent) supply hose or of the adjacent to the coupling part of the handpiece part.
  • the guide element can be, for example, a guide pin, in particular a guide pin which is arranged axially centrally on the relevant coupling element.
  • the guide element may have a main extension in the axial direction.
  • a “relative position" of the two coupling elements is designated by “coupling position” in which a transmission of current or optionally the further supply media between the two coupling elements is possible
  • Clutch position can be rotated relative to each other, the handling of the clutch is facilitated. Such a rotation makes it possible to reach the coupling position without a visual control of the turning process being necessary for the operating operator, for example a dentist. In particular, it is therefore when inserting the guide element in the
  • Insertion opening not required that the two coupling elements with respect to the axial direction relative to each other must be brought into a certain rotational position. So you can be radially oriented arbitrarily oriented into each other plugged. The insertion movement must therefore be controlled in particular in its final phase only in one degree of freedom, namely in the axial direction; In contrast, in the prior art, a control in two degrees of freedom is required, namely axially and radially. In the case of the advantageous development in which when introduced guide element, the two coupling elements in Axial direction are locked, results in a particularly simple handling in the manual production of the coupling connection.
  • the axis of rotation can be oriented in particular in the axial direction.
  • the direction of the axis of rotation can be identical to the axial direction. Furthermore, the
  • Rotary axis within the two coupling elements for example in the middle, run.
  • a sliding element on the first coupling element slidably and resiliently mounted and formed on the second coupling element a recess into which the sliding element can resiliently engage, wherein when inserted guide element, the sliding element only in the predetermined coupling position of the two coupling elements relative to each other in the recess engages.
  • the sliding element is displaceable parallel to the axis of rotation and mounted in the first coupling element. This allows a particularly space-saving embodiment.
  • an electrical contact for the power supply of the handpiece part is arranged in or on the sliding element.
  • the electrical contact in the form of a socket, for example a slotted socket or double socket, be formed.
  • a transfer device for identifying the handpiece part is advantageously arranged on or in the sliding element. This may be, for example, at least one electrical contact.
  • the sliding element is not resiliently mounted but instead formed in the form of a fixed projection.
  • the two coupling elements would initially be partially assembled axially and in this arrangement are rotated against each other until the intended coupling position is reached. At this time, the coupling elements are then fully pushed together and thus made the connection between the two elements.
  • the handling is compared to solutions from the prior art, in which the two Clutch elements must be joined together from the beginning in the correct rotational position, improved.
  • a light source is arranged in or on the coupling element which is arranged on the supply hose, for example in the form of a high-pressure lamp or an LED.
  • a locking device which connects the two coupling elements latching when inserted guide element. It can therefore be provided that the latching connection is used for the axial locking with inserted guide element.
  • the locking device may comprise a locking ring or a groove and one or more locking bushes or balls, wherein the locking ring or the groove is arranged on one of the two coupling elements and the locking bushing (s) or ball (s) on the other coupling element.
  • Supply medium arranged for the handpiece part for example a line for compressed air or a cooling medium.
  • a check valve is arranged in this line.
  • a dental device which comprises a handpiece part and a supply hose and a coupling according to the present invention in which the coupling element which can be arranged on the supply hose can be connected directly to the supply hose and / or the Coupling element, which can be arranged on the handpiece part, directly - for example by means of a screw - with the handpiece part is connectable.
  • the handpiece part in this case comprises a drive motor, for example in the form of an electric motor.
  • FIG. 1 shows a perspective view of an exemplary embodiment of a first and second coupling element according to the invention
  • FIG. 2 shows a further perspective view of the second coupling element
  • Figure 3 is another perspective view of the first
  • FIG. 4 shows a longitudinal sectional illustration of two coupling elements in the coupled state
  • FIG. 5 is a cross-sectional view of a first coupling element
  • FIG. 6 shows a horizontal section through two coupling elements
  • FIG. 7 shows a section from the representation of FIG. 6,
  • FIG. 8 shows a vertical section through a first coupling element
  • FIG. 9 shows a section from the representation of FIG. 8,
  • FIG. 9a shows the detailed design of a single contact
  • FIG. 10 shows a cross section through two coupling elements and adjacent parts of a handpiece part and a supply hose
  • FIG. 11 is a partially transparent perspective view of a first coupling element
  • FIG. 12 shows a perspective view of a handpiece part with a second coupling element
  • FIG. 13 shows a perspective view of a first coupling element, connected to a supply hose
  • Figure 14 is a partially transparent, perspective view of a
  • Figure 15 is a perspective view of a first coupling element and the adjacent part of a supply hose.
  • Figure 1 shows a perspective view of a
  • Embodiment of a coupling arrangement according to the invention.
  • the coupling is used to produce a detachable connection between a medical, in particular a dental handpiece part and a supply hose and for the transmission of electricity and possibly other supply media from the supply hose to the handpiece part.
  • the coupling comprises a first coupling part or coupling element 3 and a second coupling part or coupling element 4.
  • the first coupling element 3 can be arranged on a supply hose and the second coupling element 4 on a handpiece part.
  • FIG. 2 shows another illustration of the second coupling element 4 from a different perspective.
  • FIG. 3 shows a further illustration of the first coupling element 3 from a different perspective.
  • the two coupling elements 3, 4 each have a substantially cylindrical shape.
  • the principal axes of the coupling elements 3, 4 are referred to below as the main axes of the corresponding cylinders.
  • the first coupling element 3 has a front side 14.
  • the second coupling element 4 has a front side 15.
  • the front sides 14, 15 are formed substantially flat and are each normal to the respective main axis.
  • a guide element 5 is arranged in the form of a guide pin.
  • the guide member 5 is elongate and protrudes with respect to the front side 14 of the first coupling element 3 centrally in the direction of the main axis.
  • an insertion opening 6 is formed on the front side 15, which is formed substantially congruent to the guide element 5, in such a way that the guide element 5 can be inserted or inserted into the insertion opening 6 lengthwise.
  • the guide element 5 can be inserted so far into the insertion opening 6, until the front side 14 of the first coupling element 3, the front side 15 of the second O
  • Figure 15 shows the first coupling element 3 connected to a supply hose 2.
  • the supply hose 2 extends (in the unbent state) in the direction of the main axis of the first coupling element 3.
  • Figure 12 shows the second coupling element 4 connected to a handpiece part 1. Der an The second coupling element 4 adjacent portion of the handle portion 1 extends in the direction of the main axis of the second coupling element 4th
  • FIG. 10 shows a longitudinal section in which the two coupling elements 3, 4 can be seen in the state in which they are connected to the supply hose 2 or the handpiece 1.
  • the first coupling element 3 is fixed, so to speak "inseparable" connected to the supply hose 2.
  • the locking device 10 and the locking mechanism has on the side of one of the two coupling elements, here on the side of the first coupling element 3, a locking ring 20 with a circumferential groove closed in the direction of rotation and on the Side of the other, here the second coupling element 4 at least one locking bushing 21 which is resiliently mounted and can engage resiliently in the groove of the locking ring 20.
  • the locking ring 20 can be seen inter alia in Figures 13 and 15.
  • the locking bushing 21 can be seen for example in Figure 6 and in Figure 7, which represents an enlarged detail of Figure 6. In the perspective views of Figures 1 and 2, the locking bushing 21 in the dismantled state, that is shown separately.
  • the latching ring 20 and the latching bushing 21 are designed in such a way that, when the guide element 5 is inserted into the insertion opening 6, it is palpable, that is to say haptically detectable, when the locking sleeve 21 engages in the locking ring 20, more precisely in the circumferential groove of the locking ring 20. As a result, the handling of the clutch is further facilitated.
  • the latching could also take place by means of a circumferential groove and one or more balls.
  • the latching device 10 is designed or arranged such that the locking takes place in the axial direction, just before the two front sides 14, 15 touch. This is evident, for example, from the illustrations of FIGS. 4 and 6. As a result, a relative alignment of the two coupling elements 3, 4 is generally supported when inserting the guide element 5 into the insertion opening 6 in the final phase of the movement.
  • a spring 13 is provided for this purpose, which can be seen for example in the illustration of FIG. Furthermore, the spring 13 can be seen in Figure 8, as in Figure 9, which shows a section of the illustration of Figure 8. (In the illustrations of Figures 1 and 3, this spring 13 is not shown.)
  • the sliding element 7 projects axially beyond the front side 14 of the first coupling element 14, provided that no external force acts on the sliding element 7.
  • the sliding element 7 is displaceably mounted on the first coupling element 3 such that it can be displaced parallel to the main axis of the first coupling element 3, but this movement takes place outside the main axis, ie not centrally with respect to the first coupling element 3.
  • the sliding movement is indicated by a double arrow.
  • the sliding element 7 is resiliently mounted on the first coupling element 3 such that it can be manually pressed so far against the force of the spring 13 until it no longer projects beyond the front side 14 of the first coupling element 3.
  • a recess 8 is formed, whose shape is formed substantially congruent to that portion of the sliding element 7, which - in the state without external force - beyond the front side 14 addition.
  • the sliding element 7 can resiliently engage in the recess 8, in particular when inserted guide pin 5 or in the state in which the coupling elements are axially locked. In the illustration of Figure 4, the state is shown in which the sliding element 7 is in engagement with the recess 8.
  • Sliding element 7 engages in the recess 8 due to the action of the spring 13. This position is called the coupling position.
  • two or more recesses may be provided, in which the sliding element 7 can engage. In this case, two or more coupling positions are accordingly possible.
  • This intervention can, as already mentioned, be designed so that it can be felt by an operator. In addition, it can also be made audible, for example in the form of a click. A visual check when making the coupling connection is therefore practically not necessary for the operator. Only in the initial phase of the introduction of the guide element 5 into the insertion opening 6 may eye contact be helpful. For the subsequent, generally occurring rotational movement no eye contact is necessary. After successful production of the coupling position, the operator is haptically and acoustically signaled that the connection is made as desired. Compared to conventional couplings, the operation of a clutch according to the invention is thus much easier and faster.
  • an alternative variant according to the invention could also be formed by the fact that the sliding element is not resiliently mounted but instead formed in the form of a solid projection.
  • the two coupling elements 3, 4 - if they are not yet in that relative rotational position corresponding to the coupling position - initially axially only partially joined and rotated in this arrangement against each other until the intended coupling position is reached. Only then are the coupling elements 3, 4 pushed completely together and thus made the connection between the two elements.
  • electrical contacts 9 for the power supply of the handpiece part 1 are arranged in the sliding element 7.
  • the electrical contacts 9 are in the form of sockets, more precisely formed by double sockets 9a.
  • For engaging in the double bushes 9a are on the side of the second contact element 4th
  • Contact pins 16a provided, which are shown for example in Figure 12. In the illustration of FIG. 4, these contact pins are not shown for the sake of clarity. Also on the first coupling element 3 corresponding contact pins or pins 16b are provided, such as the representation of a single contact 9 in FIG 9a shows. The arrow shown in Figure 9a here represents the sliding path of the corresponding contact pin. Beyond the spring, which is connected at its one end to the contact pins 16b, a corresponding connector receptacle 22 is disposed on the first coupling element 3.
  • the coupling position is provided in a unique rotational position
  • the electrical contact can be made very reliable. Damage to the contacts can be largely excluded.
  • the embodiment in the form of the contact pins 16a and 16b on the one hand and the electrical contacts 9 in the form of double sockets on the other hand makes this particularly well possible.
  • three electrical contact pins 16 a are provided, namely for the power supply of an electric motor, which is arranged in the handpiece part 1 or is connected to the handpiece part.
  • This is preferably a so-called brushless motor, the stator windings of the motor being supplied with voltage via the contacts 9 thus formed. If, on the other hand, a collector motor were used, a power supply via only two contacts would be sufficient.
  • two further contact pins or contacts are provided, which constitute a transmission device 17 for identifying the handpiece part 1.
  • a transmission device 17 for identifying the handpiece part 1.
  • an electrical resistance element can be provided in the handpiece part 1, which is connected on both sides with one of the contact pins of the transmission device 17, so that a resistance can be detected with the aid of a corresponding current flow, which makes the handpiece part 1 identifiable.
  • a coupling according to the invention is generally suitable for various handpiece parts.
  • the electrical contacts could also be designed in the form of blunt contacts and spring-mounted pins.
  • a light source in the form of a high-pressure lamp 18 is arranged on the first coupling element 3.
  • a corresponding light guide 19 is provided, by means of which the light is conducted to the head of the handpiece part 1. This is best seen in Figure 14.
  • a conduit 11 for a cooling medium for example in the form of a spray or cooling air
  • 6 shows the section of this line 11 on the side of the first coupling element 3.
  • the corresponding connection to the section of the line 11 in the second coupling element 4 takes place in a manner known per se via an annular groove connection.
  • Such a compound is known as such from the prior art, for example from the German Offenlegungsschrift
  • Figure 11 can be seen on the first coupling element 3 arranged steel nipple 23 for connection to (not shown) hoses, which serve in the supply hose for forwarding the corresponding media.
  • the coupling serves for connecting a handpiece part connected to an electric motor or a supply hose on the other hand, wherein the following supply media can be transmitted in the coupling position: current for the motor, current or electrical signals for detecting or identifying the handpiece, spray, cooling air, rear cooling air and light.
  • FIG. 5 shows the section VV according to FIG. One recognizes inter alia the high-pressure lamp 18 and the electrical contacts 9 for the power supply of the handpiece part 1.
  • the high-pressure lamp 18 is also shown in perspective in the illustration of FIG. 11, wherein an LED could also be used as an alternative light source. LIST OF REFERENCE NUMBERS

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention concerne un couplage pour la fabrication d'une liaison détachable entre une partie de pièce à main médicale, notamment dentaire, et un tube d'alimentation, ainsi que pour la transmission d'un courant et éventuellement de moyens d'alimentation supplémentaires du tube d'alimentation à la partie de pièce à main. Le couplage comprend deux éléments de couplage (3, 4), un des deux éléments de couplage (3) pouvant être disposé au niveau du tube d'alimentation et l'autre (4) au niveau de la partie de pièce à main. Un élément de guide (5) est disposé au niveau d'un des deux éléments de couplage (3), ledit élément de guide pouvant être introduit dans un orifice d'entrée (6) formé sur l'autre élément de couplage (4). En une certaine position de rotation relative des deux éléments de couplage (3, 4), un élément de glissement (7) en contact avec le courant s'accroche dans un retrait approprié du second élément de couplage (4), les deux éléments de couplage (3, 4), lors d'une introduction totale ou au moins partielle de l'élément de guide (5), pouvant être tournés l'un par rapport à l'autre autour d'un axe de rotation (D) avant d'atteindre la position de couplage décrite précédemment. Un couplage rapide et fiable est ainsi formé, permettant une manipulation particulièrement simple.
EP07819494A 2006-10-31 2007-10-31 Couplage entre une partie de pièce à main médicale et un tube d'alimentation Withdrawn EP2083739A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051511A DE102006051511A1 (de) 2006-10-31 2006-10-31 Kupplung zwischen einem ärztlichen Handstückteil und einem Versorgungsschlauch
PCT/EP2007/009462 WO2008052768A1 (fr) 2006-10-31 2007-10-31 Couplage entre une partie de pièce à main médicale et un tube d'alimentation

Publications (1)

Publication Number Publication Date
EP2083739A1 true EP2083739A1 (fr) 2009-08-05

Family

ID=39041230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07819494A Withdrawn EP2083739A1 (fr) 2006-10-31 2007-10-31 Couplage entre une partie de pièce à main médicale et un tube d'alimentation

Country Status (5)

Country Link
US (1) US7914315B2 (fr)
EP (1) EP2083739A1 (fr)
JP (1) JP2010508050A (fr)
DE (1) DE102006051511A1 (fr)
WO (1) WO2008052768A1 (fr)

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US7914315B2 (en) 2011-03-29
DE102006051511A1 (de) 2008-05-08
JP2010508050A (ja) 2010-03-18
US20100221676A1 (en) 2010-09-02
WO2008052768A1 (fr) 2008-05-08

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