WO2008125758A1 - Dispositif de rétention axiale d'une queue d'instrument dentaire comportant un axe traversé par au moins un goupille de blocage - Google Patents
Dispositif de rétention axiale d'une queue d'instrument dentaire comportant un axe traversé par au moins un goupille de blocage Download PDFInfo
- Publication number
- WO2008125758A1 WO2008125758A1 PCT/FR2008/050117 FR2008050117W WO2008125758A1 WO 2008125758 A1 WO2008125758 A1 WO 2008125758A1 FR 2008050117 W FR2008050117 W FR 2008050117W WO 2008125758 A1 WO2008125758 A1 WO 2008125758A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- instrument
- tail
- extremity
- pin
- Prior art date
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
- A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
- A61C1/141—Tool-holders, i.e. operating tool holders, e.g. burr holders in an angled handpiece
Definitions
- Device for axial retention of a dental instrument tail comprising an axis traversed by at least one locking pin
- the invention relates to a device for axial retention of a dental instrument tail as well as transmission of the rotational drive of said instrument.
- the element providing these two functions is constituted by a monobloc part with a drum integral with the head of a handpiece, or consists of a transverse disk key system.
- WO 99 / 13794A which relates to an axial retention device in which the elastic arm is obtained by machining the cylindrical retention shaft, the two means and the two functions are not separated, which complicates the manufacture. and does not allow the interchangeability of the arm or the possibility of making it in a material other than that of the barrel, for example a less hard or more elastic material.
- the securing means with the flat part of the instrument is not removable and complex assembly because it is an elastic piece blocked by a piece housed in a groove opening and it is necessary block by welding or gluing.
- the present invention aims at improving the existing devices by facilitating the introduction of the tool and the engagement of its axial retention means, by increasing the transmission of the rotational torque, by facilitating the running-in of the bore intended to receive the tail of the instrument, realizing a reliable and economical system, and proposing removable means and ensuring better guidance of the instrument.
- the invention which consists of a device for axial retention of a dental instrument tail as well as transmission of the rotational drive of said instrument, which device is disposed in a head of a counter-angle or a workpiece. hand, said tail having at its end an annular groove in which at least one lug is adapted to engage radially and a flat part for allowing the rotation of said tail, the rotational movement being communicated to the instrument by an output gear of a mechanical transmission unit coupled to a drive motor and disposed in a handle joined to the head of the counter angle or the handpiece, said device being characterized in that it is formed of the combination of an axially axially traversable shaft by the tail of the instrument, of at least one resilient lever axially disposed in an outer housing of said axis, and t each a pin and at least one pin each disposed in a transverse hole in the upper part of the axis and shifted laterally relative to the axial direction of the axis, so as to allow the cooperation of the pin or
- FIG. 1 head of a handpiece or counter-angle view in longitudinal section, equipped with a device according to FIG. invention now the tail of a dental instrument (not seen in section).
- FIG. 2 general view of one of the parts, called the axis, constituting the retention-driving device according to the invention.
- FIG. 3 is a semi-exploded view of the axis of FIG. 2 showing its position in a bearing race of the head, and its positioning with respect to a rotation drive pinion.
- Figure 4 Overview of the parts of Figure 3 assembled together and viewed from another angle, the tail of the instrument is not shown.
- Figure 1 shows the tail (1) of a dental instrument inserted into the retention-training device according to the invention.
- the axial retention of the tail (1) is conventionally achieved by the engagement of a lug (3a) of an elastic lever (3) in an annular groove (1a) provided at the end of the tail (1). ) and that the rotational drive is provided through the presence of a flat (12) parallel to the axis of the instrument.
- a lug (3a) of an elastic lever (3) in an annular groove (1a) provided at the end of the tail (1).
- the rotational drive is provided through the presence of a flat (12) parallel to the axis of the instrument.
- the characteristics of the annular groove and the flat are also subject to a standard.
- An elastic lever (3) is of elongate shape, housed parallel to the axis of the tail (1) in a lateral housing (5) of an interface part called axis (2) and visible in FIGS (2, 3, 4).
- Said lever (or each lever) is locked in the lower part between a shoulder (5a) of the axis (2) and for example by an inner ring (4) of a ball bearing of the head, allowing the interchangeability of the lever (3).
- lever or levers (3) it is possible to secure the lever or levers (3) on the axis (2) by welding, brazing, or other means.
- the upper part of a lever has a degree of freedom in a radial direction relative to the tail of the instrument.
- a lug (3a) has a slope (3c) facilitating the axial insertion of the tail (1) in the direction of the arrow F and the erasure of said lug by spacing the upper part of the levers (3) .
- the elasticity of the central part (3b) of a lever brings the lug (3a) towards the tail and makes its engagement in the annular groove (1a).
- the central portion (3b) must be as long as possible in order to better distribute the fatigue and ensure a good life, in a context of miniaturization of the heads of contra-angles.
- the axis (2) of generally cylindrical shape has a central portion at a greater diameter than at both ends so as to create: above: a shoulder (2a) acting as a low axial abutment to a pinion (7) engaged axially on the upper part of the axis, underneath: a shoulder (2b) serving as a high axial abutment to a ball bearing (8).
- Axis (2) is traversed axially by a bore (13) for guiding the tail (1) of an instrument.
- a lateral housing (5) of a lever (3) has a depth less than the thickness of the axis (2) so as not to open into the bore, except opposite the annular groove (1a) for allow the engagement of or lugs (3a).
- One (or each) lateral housing (5) thus lying on the periphery of the axis (2) from the means for attaching the lever (here the shoulder (5a)) and in the direction of the annular groove ( 2), preferably but not necessarily until it. Its recessed portion allows movement of the arm (3) and its solid part, or bottom (5b) of the housing, allows guiding the tail of the instrument.
- the axis (2) further comprises two transverse holes (9 and 10) in its upper part, offset laterally with respect to the axial direction (11) of the axis (2), each intended to accommodate a pin (6). whose length is less than or at most substantially equal to the diameter of the upper part of the axis (2).
- the radial offset is intended to allow the engagement of the pins against the flat (12) of the tail (1) and perpendicular to the axial direction (11), the lowest pin abutting in the bottom of the flat (12) .
- the section of the holes is of complementary shape to the section of the pins and of size capable of allowing them to slide.
- the advantages of the assembly (axis 2 - pins 6 - lever 3) described above has the desired advantages, namely: ease of introduction of the flat part of the tool shank thanks to the cylindrical shape of the pins, - torque important transmitted, easy break-in of the bore containing the milling shank, ease of assembly, reliable and economical system, good guidance of the tail of the instrument by the axis (2) due to the fact that this axis does not have an axial slot between the annular groove and the point of attachment of the lever.
- one (or each) lever is a part manufactured independently of the axis (2) and may even be in a different material, it can be so interchangeable, and machining is facilitated.
- the central portion (3b) of an arm does not come into contact with the tail of the instrument, there is separation of the guide function of the tail which is formed by the axis (2 ) not split, and the retention-release function performed by the arm or arms.
- the pins are housed in bores of the axis (2) and are therefore immobilized in one direction and in the other, in a direction parallel to the tail of the instrument, by the axis (2 ) itself without requiring any blocking part, or bonding or welding action of a locking piece as is the case in the document of the prior art referred to in the introduction.
- the pins can be removed along the axes of the holes (9 and 10) after removal of the pinion (7).
- the assembly is totally removable.
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
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT08761982T ATE508703T1 (de) | 2007-04-17 | 2008-01-25 | Vorrichtung zur achsenbeibehaltung eines zahnärztlichen instrumentenarms mit einer von mindestens einem sperrbolzen gekreuzten achse |
US12/531,302 US20110129795A1 (en) | 2007-04-17 | 2008-01-25 | Device for the axial retention of a dental instrument extremity having an axis crossed by at least one locking pin |
JP2010503552A JP2010524535A (ja) | 2007-04-17 | 2008-01-25 | 歯科医療ツールの保持・駆動装置 |
CN2008800055312A CN101646397B (zh) | 2007-04-17 | 2008-01-25 | 具有被至少一紧锁销贯穿的轴的牙科器械柄轴向保持装置 |
EP08761982A EP2146661B1 (fr) | 2007-04-17 | 2008-01-25 | Dispositif de rétention axiale d'une queue d'instrument dentaire comportant un axe traversé par au moins un goupille de blocage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0754517 | 2007-04-17 | ||
FR0754517A FR2915084B1 (fr) | 2007-04-17 | 2007-04-17 | Dispositif de retention axiale d'une queue d'instrument dentaire comportant un axe traverse par au moins une goupille de blocage. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008125758A1 true WO2008125758A1 (fr) | 2008-10-23 |
Family
ID=38722654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/050117 WO2008125758A1 (fr) | 2007-04-17 | 2008-01-25 | Dispositif de rétention axiale d'une queue d'instrument dentaire comportant un axe traversé par au moins un goupille de blocage |
Country Status (9)
Country | Link |
---|---|
US (1) | US20110129795A1 (fr) |
EP (1) | EP2146661B1 (fr) |
JP (1) | JP2010524535A (fr) |
CN (1) | CN101646397B (fr) |
AT (1) | ATE508703T1 (fr) |
ES (1) | ES2364963T3 (fr) |
FR (1) | FR2915084B1 (fr) |
TW (1) | TW200916057A (fr) |
WO (1) | WO2008125758A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130029288A1 (en) * | 2011-07-29 | 2013-01-31 | Dentsply International, Inc. | Positive drive chuck and bur arrangement for a dental handpiece |
KR101518739B1 (ko) * | 2014-03-21 | 2015-05-11 | 두나미스덴탈 주식회사 | 볼의 구속력을 이용한 플랫타입 치과용 핸드피스 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2364307A1 (de) * | 1973-12-22 | 1975-07-03 | Skoda Np | Handstueck einer zahnaerztlichen bohrmaschine |
DE3012240A1 (de) * | 1980-03-28 | 1981-10-08 | Siemens AG, 1000 Berlin und 8000 München | Haltevorrichtung fuer ein rotierendes zahnaerztliches werkzeug |
US4370132A (en) * | 1980-03-28 | 1983-01-25 | Siemens Aktiengesellschaft | Rotatable socket for a dental handpiece |
US5584689A (en) * | 1993-07-30 | 1996-12-17 | Kaltenbach & Voigt Gmbh & Co. | Angled or straight handpiece with a releasable mounting device for a tool, in particular for medical purposes |
WO1999013794A1 (fr) | 1997-09-12 | 1999-03-25 | Young Dental Manufacturing Company | Mandrin avec liberation par bouton-poussoir destine a un instrument dentaire/medical |
WO2006097587A1 (fr) * | 2005-03-14 | 2006-09-21 | Micro Mega International Manufactures | Dispositif d'accrochage d'un instrument dentaire sur une pièce à main formé d'un ensemble axe tournant, ressort d'accrochage et bouton poussoir |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US491499A (en) * | 1893-02-07 | Angle attachment for dental engines | ||
US2897596A (en) * | 1958-01-03 | 1959-08-04 | Weber Dental Mfg Company | Fluid-driven dental handpiece construction |
DE1491027B1 (de) * | 1965-03-23 | 1970-02-05 | Kaltenbach & Voigt | Spannvorrichtung zur Halterung rotierender zahnaerztlicher Werkzeuge |
US4014099A (en) * | 1975-01-29 | 1977-03-29 | Young Dental Manufacturing Company | Dental handpiece |
JPS5810181B2 (ja) * | 1978-07-26 | 1983-02-24 | マンヨ−ツ−ル株式会社 | ツ−ルホルダ |
DE3040537C2 (de) * | 1980-10-28 | 1986-02-27 | Siemens AG, 1000 Berlin und 8000 München | Vorrichtung zum Lösen einer Halte- oder Spannvorrichtung für ein zahnärztliches Werkzeug |
FR2555041A1 (fr) * | 1983-11-23 | 1985-05-24 | Micro Mega Sa | Poussoir |
JPH01171539A (ja) * | 1987-12-28 | 1989-07-06 | Nakanishi Shika Kikai Seisakusho:Kk | 歯科用ハンドピース |
JP3152427B2 (ja) * | 1990-08-07 | 2001-04-03 | 株式会社ナカニシ | 歯科用ハンドピースのチャック装置 |
US5704786A (en) * | 1996-05-16 | 1998-01-06 | Young Dental Manufacturing Company | Chuck with a push button release for a dental/medical device |
DE19629902A1 (de) * | 1996-07-24 | 1998-01-29 | Kaltenbach & Voigt | Winkelförmiges oder gerades Handstück mit einer lösbaren Spannvorrichtung für ein rotierendes Werkzeug, insbesondere für medizinische oder dentale Zwecke |
AT406013B (de) * | 1998-05-20 | 2000-01-25 | Buermoos Dentalwerk | Lösbare spannvorrichtung für ein rotierendes medizinisches oder dentales werkzeug |
FR2864441B1 (fr) * | 2003-11-25 | 2006-07-14 | Micro Mega Int Mfg Sa | Piece a main dentaire dont le corps est forme d'une seule piece a logements internes permettant l'introduction des organes mecaniques et leur assemblage. |
FR2864442B1 (fr) * | 2003-11-25 | 2006-08-04 | Micro Mega Int Mfg Sa | Piece a main dentaire a corps forme d'une seule piece et comportant un organe de liaison electrique et elastique entre les organes de transmission mecanique et la tete de l'instrument |
FR2873566B1 (fr) * | 2004-07-27 | 2007-04-06 | Micro Mega Int Mfg Sa | Dispositif de tenue d'un instrument dentaire |
FR2886536B1 (fr) * | 2005-06-03 | 2007-08-03 | Micro Mega Int Mfg Sa | Fixation amovible d'instrument dentaire avec taquet escamotable par rapport a l'axe d'un fut tournant d'entrainement |
-
2007
- 2007-04-17 FR FR0754517A patent/FR2915084B1/fr not_active Expired - Fee Related
-
2008
- 2008-01-25 WO PCT/FR2008/050117 patent/WO2008125758A1/fr active Application Filing
- 2008-01-25 ES ES08761982T patent/ES2364963T3/es active Active
- 2008-01-25 AT AT08761982T patent/ATE508703T1/de active
- 2008-01-25 EP EP08761982A patent/EP2146661B1/fr not_active Not-in-force
- 2008-01-25 CN CN2008800055312A patent/CN101646397B/zh not_active Expired - Fee Related
- 2008-01-25 US US12/531,302 patent/US20110129795A1/en not_active Abandoned
- 2008-01-25 JP JP2010503552A patent/JP2010524535A/ja active Pending
- 2008-04-17 TW TW097113998A patent/TW200916057A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2364307A1 (de) * | 1973-12-22 | 1975-07-03 | Skoda Np | Handstueck einer zahnaerztlichen bohrmaschine |
DE3012240A1 (de) * | 1980-03-28 | 1981-10-08 | Siemens AG, 1000 Berlin und 8000 München | Haltevorrichtung fuer ein rotierendes zahnaerztliches werkzeug |
US4370132A (en) * | 1980-03-28 | 1983-01-25 | Siemens Aktiengesellschaft | Rotatable socket for a dental handpiece |
US5584689A (en) * | 1993-07-30 | 1996-12-17 | Kaltenbach & Voigt Gmbh & Co. | Angled or straight handpiece with a releasable mounting device for a tool, in particular for medical purposes |
WO1999013794A1 (fr) | 1997-09-12 | 1999-03-25 | Young Dental Manufacturing Company | Mandrin avec liberation par bouton-poussoir destine a un instrument dentaire/medical |
WO2006097587A1 (fr) * | 2005-03-14 | 2006-09-21 | Micro Mega International Manufactures | Dispositif d'accrochage d'un instrument dentaire sur une pièce à main formé d'un ensemble axe tournant, ressort d'accrochage et bouton poussoir |
Also Published As
Publication number | Publication date |
---|---|
EP2146661A1 (fr) | 2010-01-27 |
ATE508703T1 (de) | 2011-05-15 |
CN101646397A (zh) | 2010-02-10 |
FR2915084B1 (fr) | 2009-05-29 |
FR2915084A1 (fr) | 2008-10-24 |
CN101646397B (zh) | 2011-11-16 |
ES2364963T3 (es) | 2011-09-19 |
JP2010524535A (ja) | 2010-07-22 |
US20110129795A1 (en) | 2011-06-02 |
EP2146661B1 (fr) | 2011-05-11 |
TW200916057A (en) | 2009-04-16 |
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