CA2110503A1 - Suction handpiece for dental suction implements - Google Patents
Suction handpiece for dental suction implementsInfo
- Publication number
- CA2110503A1 CA2110503A1 CA002110503A CA2110503A CA2110503A1 CA 2110503 A1 CA2110503 A1 CA 2110503A1 CA 002110503 A CA002110503 A CA 002110503A CA 2110503 A CA2110503 A CA 2110503A CA 2110503 A1 CA2110503 A1 CA 2110503A1
- Authority
- CA
- Canada
- Prior art keywords
- handpiece
- suction
- channel
- parts
- intermediate area
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/06—Saliva removers; Accessories therefor
- A61C17/08—Aspiration nozzles
Landscapes
- Health & Medical Sciences (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
A suction handpiece for a dental suction implement has three parts: a first handpiece part (1) upon which a suction cannula (9) may be stuck, a second handpiece part (2) upon which a suction hose (10) may be stuck and an intermediate area (30) that allows the angle between both handpiece parts (1, 2) to be modified on their common axial plane.
Description
2110~
~0 93~19696 PCT/Aq~93~00057 A SUCTION HANDPIECI: FOP~ DENTAL SUCTION IMPLE~ENTS
The present trans~ation relates to a suction hand,~i~ce for a dental suction implement, this having a first handpiece part on which a suction cannula may be stuck, and with a second handpi~ce part upon which a suction hose may be stuck, and an inte~mediate area between the two handpi~ce paxtC~ ~ each of which incorporates a channel section, the angle between these two parts being variable .
!;uch a suction handpiece is described in EP-A 390 9510 In thisr in order to achieve rota~ion of the tw~ handpiece parts from û
to approximately ~0 from an aligned positiorl, there are supporting areas that are inclinc~d a~ an angle to the axes of the channel and the axis Q~ rotation passeC3 through these at arl angle o~ approximately 30 . E~ec:ause c: f this, if the grip part with which the suction cannulas are provided is held s~c:urely, the pivoting section that supports the ~uct:ion hose will tumble whe ~:wivelled sins::0 it moves along the envelope o~ a cone. This means that the suction hose will extend from the grip part in varying directions~ However" because of the fact tihat it is always întended to lay smoothly agains~ the back of the operator ~ s hand, when it is rotated, the whole of the suction handpiece mus~ be ~wivelled in the opposite direction about the axis o~ th~ grip part. This causes the suction cannula~; to swivel as well so that they, in their turn, must be counter-rotate~. Fox this reason~ a num~er of changes o~ hand position and ac~iYIities are required to maintain a selected working positlorl whe~ the suction handpiece is rotated~
For this r~asorl I it is the task o~ the pres~nt in~reIltioll to make rotation of the ~wo parts of a uction handpiece simpler.
"
` 21iO ~i ~ 3 ~ -WO 93/196g6 PCT~AT93~00057 According to th~ present invention, this problem has been solved in that t~e two parts o~ the handpiece can be ad~usted in their common axial plane.
Because of this, the suction handpiece can b~ so ~e~d in t~e hand that the desired position of the suction hose on the back of the hand and the desired position of the suction cannulas in the mouth of the patient is ensured. Rotation of the second part of the handpiece of the suction handpiece does not cause the first part of the handpiece to swivel about its longitudinal axis, since this takes place in one plane, and thus causes no rotation of the suction cannulas which re~uires them to be restored to the desired position.
A pre~erred ~irst embodiment is such that an elastically curvable intermediate area is provided between t.he two parts of the handpiece. In this embodiment,. the intermediate area of the suction handpiec~ is prefera~ly a ~oft section of tube or ho~e ~hat retains its aross sectional area o~ passage regardless of the angle of curvature. This can ~e made in one piece with the two parks of the h~ndpiece or as a separate part th~t is connected to the other two. The intermediate ~ec~ion consists, in part~cular~ of a section of hose with a coil spring in it~
walls.
A further preferred e~ odiment is such that a plastically curvable interm~diate arQa is provided between the two p~rts of the handpiece. In thisl the suction handpiece retains its ~elected !angle until the next change, which can also be an advantagej, as will be di~cussed bélow. The intermediate area can be con~igured in the form of corrugated hose. I~ it is interlded that the length of the int~rTnediate area does not change on the inner side, which is to say the side whiah ~aces the axis of 1 2~10`303 WO 93/19696 PC~T93/00057 curvatur~, it is preferred that provision be made such that the depth of the corrugations di~fers in the peripheral direction.
This means that the corrugated bellows formation is extended at maximum curvature, which imposes a limit on the curvature, and it is ~olded most compactly when the handpiece is s~ ~ ght.
A further embodim~nt i5 such that the two parts o f the handpiece can be adjusted about an axis of rotation that extends perpendicular to the common axial plane of the two channel sections. If the axis of rotation i~ located outside the channel sections, it is then partlcularly advantageous if the two parts of thR handpisce are arranged such that they can ~lide into each .other when curved and the axis of rotatîon pas~es through the mid-point of the curvature of the two curved channel sections, In this embodiment, too/ the cross-section of the channel within the ov~rall suction handpiece can be kept essentially the ~ame.
In particular, there are no cavitie~ or tha like to interfere with the flow and in which deposits can form. S~aling lips or ~olding or slip-o~er sealing 51e~ves can be ~ormed between the two chann~l sections that slide inside each other. In addition, it i5 al50 preferred that hinge tabs be f ormed on ths two parts of the handpiece, in which a hinge pin can be supported. This leaves ~he re~ulred external frea ~pace for the channel sections to slid~ into ~ach other.
Another ~mbodiment is such that the axis of ro~ation extends perpendicular to the axi~ o~ the two channel sections. The hinge area is then in th~ approximat~ ~o~m of a capsul~.
rn order to be able to mov~ an additive for cleaning and/or disinfecting and/or pre~enting foam through the suction handpiece into the area of the push coupling of the suction cannulas, a preferxed e~bodiment is such that each Of the two parts of the ... . .
~0 93~19696 PCT/Aq~93~00057 A SUCTION HANDPIECI: FOP~ DENTAL SUCTION IMPLE~ENTS
The present trans~ation relates to a suction hand,~i~ce for a dental suction implement, this having a first handpiece part on which a suction cannula may be stuck, and with a second handpi~ce part upon which a suction hose may be stuck, and an inte~mediate area between the two handpi~ce paxtC~ ~ each of which incorporates a channel section, the angle between these two parts being variable .
!;uch a suction handpiece is described in EP-A 390 9510 In thisr in order to achieve rota~ion of the tw~ handpiece parts from û
to approximately ~0 from an aligned positiorl, there are supporting areas that are inclinc~d a~ an angle to the axes of the channel and the axis Q~ rotation passeC3 through these at arl angle o~ approximately 30 . E~ec:ause c: f this, if the grip part with which the suction cannulas are provided is held s~c:urely, the pivoting section that supports the ~uct:ion hose will tumble whe ~:wivelled sins::0 it moves along the envelope o~ a cone. This means that the suction hose will extend from the grip part in varying directions~ However" because of the fact tihat it is always întended to lay smoothly agains~ the back of the operator ~ s hand, when it is rotated, the whole of the suction handpiece mus~ be ~wivelled in the opposite direction about the axis o~ th~ grip part. This causes the suction cannula~; to swivel as well so that they, in their turn, must be counter-rotate~. Fox this reason~ a num~er of changes o~ hand position and ac~iYIities are required to maintain a selected working positlorl whe~ the suction handpiece is rotated~
For this r~asorl I it is the task o~ the pres~nt in~reIltioll to make rotation of the ~wo parts of a uction handpiece simpler.
"
` 21iO ~i ~ 3 ~ -WO 93/196g6 PCT~AT93~00057 According to th~ present invention, this problem has been solved in that t~e two parts o~ the handpiece can be ad~usted in their common axial plane.
Because of this, the suction handpiece can b~ so ~e~d in t~e hand that the desired position of the suction hose on the back of the hand and the desired position of the suction cannulas in the mouth of the patient is ensured. Rotation of the second part of the handpiece of the suction handpiece does not cause the first part of the handpiece to swivel about its longitudinal axis, since this takes place in one plane, and thus causes no rotation of the suction cannulas which re~uires them to be restored to the desired position.
A pre~erred ~irst embodiment is such that an elastically curvable intermediate area is provided between t.he two parts of the handpiece. In this embodiment,. the intermediate area of the suction handpiec~ is prefera~ly a ~oft section of tube or ho~e ~hat retains its aross sectional area o~ passage regardless of the angle of curvature. This can ~e made in one piece with the two parks of the h~ndpiece or as a separate part th~t is connected to the other two. The intermediate ~ec~ion consists, in part~cular~ of a section of hose with a coil spring in it~
walls.
A further preferred e~ odiment is such that a plastically curvable interm~diate arQa is provided between the two p~rts of the handpiece. In thisl the suction handpiece retains its ~elected !angle until the next change, which can also be an advantagej, as will be di~cussed bélow. The intermediate area can be con~igured in the form of corrugated hose. I~ it is interlded that the length of the int~rTnediate area does not change on the inner side, which is to say the side whiah ~aces the axis of 1 2~10`303 WO 93/19696 PC~T93/00057 curvatur~, it is preferred that provision be made such that the depth of the corrugations di~fers in the peripheral direction.
This means that the corrugated bellows formation is extended at maximum curvature, which imposes a limit on the curvature, and it is ~olded most compactly when the handpiece is s~ ~ ght.
A further embodim~nt i5 such that the two parts o f the handpiece can be adjusted about an axis of rotation that extends perpendicular to the common axial plane of the two channel sections. If the axis of rotation i~ located outside the channel sections, it is then partlcularly advantageous if the two parts of thR handpisce are arranged such that they can ~lide into each .other when curved and the axis of rotatîon pas~es through the mid-point of the curvature of the two curved channel sections, In this embodiment, too/ the cross-section of the channel within the ov~rall suction handpiece can be kept essentially the ~ame.
In particular, there are no cavitie~ or tha like to interfere with the flow and in which deposits can form. S~aling lips or ~olding or slip-o~er sealing 51e~ves can be ~ormed between the two chann~l sections that slide inside each other. In addition, it i5 al50 preferred that hinge tabs be f ormed on ths two parts of the handpiece, in which a hinge pin can be supported. This leaves ~he re~ulred external frea ~pace for the channel sections to slid~ into ~ach other.
Another ~mbodiment is such that the axis of ro~ation extends perpendicular to the axi~ o~ the two channel sections. The hinge area is then in th~ approximat~ ~o~m of a capsul~.
rn order to be able to mov~ an additive for cleaning and/or disinfecting and/or pre~enting foam through the suction handpiece into the area of the push coupling of the suction cannulas, a preferxed e~bodiment is such that each Of the two parts of the ... . .
2 t ~
WO 93~19696 PC~/A~93/00057 handpiece has a second channel section r these being connected in the intermediate area through a transition channel.
In the embodiment with the elastically curvable intermediate area, the transition channel is made b~tween the,~o chànnel sections, preferably in the turns of the coil. When this is done, it can either run between the coil spring or can con ain the coil spring.
In the v2rsion with the plastically curvable intermediate area, it is preferred that the transition channel be arranged along the wall of the intermediate area with its axis parallel to the axis of this. Thus, the version with concertina-~ype bellows, the pleat depth of which dif~ers around the periphery, is particularly advantageous because the length of the transition channel must not change if th~ depth of the pleats in the area of the transition channel is practically zero ~or all practical purpose~.
A ~urther embodiment is such that the axis of rotation is perpendîcular to its two axes. A prefarred embodiment is such that ~ach second channel ~ection is guided in ~ hinge tab and op~ns out into the bearing drilling for the hinge pin. A sacond channel is formed in the ar~a ~f the hinge pin, in particular by a peripheral constriation that~joins the two outl~t~. In the above e ~ odime~t with the capsule-lik~ hinge area, the second :channel sections are guid~d in~a ~imilar manner to the first ~hannel sections and separated ~Eom thes~ by an int~rmediate bottom.
The present inv~ntion is described in gr~ater detail ~elow on th~
basis of the drawings appended hereto, without being restrict~d to these.
2l~îîa3 - -h-O 93,~19696 ~CT/~T93/~0057 Figures 1 and 2 show a ~irst embodiment in longitudinal section and in plan view;
Figures 3 to 5 show a second embodiment in longitudinal section and in c:ross section on the lines IV-IY and V V ,~figure 3;
Figure 5 [sic~ shows a third ~mbodiment in cross- section:
~igures 7 arld 8 show a further embodiment;
Figures 9 and 10 show an embodiment similar to figure 7 with anot~ler seal arrangeTnent;
Figures 11 and 12 ~how a ~urther embodiment with a curva~le ir~termediate area~
A suction handpiec~ has a f irst handpiece 1 that serve~3 as a grip and a further handpiece 2, ther2 being an inte~nediate area 3 0 between the~;e. Each handpiece part 1, 2 contairls a channel ec:tion 4 t 5 o~ a suction channel 22 ( ~igure 7 ); a suction cannula 9 is in~tall~3d on the :eirs~ handpiece part 1 amd a suction hose is installed on the second handpiece part 2, by means of a hose conn~cto~ 280 It is pre~erred that the kwo handpie~e parts 1 and 2 ~ac:h aontalll a secorld channel section 11, 1~, as can be s~en from ~igure. . 1 to 5 ~ 7, and 8, these forming par~ of a iEeed channel 21 through which ~n additi~r~ can }:e passed as far ~s the area o~ the push coupling :~or the suction cannula 9. ~his add:Ltive aontain a cleaning agent and~or a disin~ecting agent and/or an anti-~c3am agent.
,,, ~
A~ can be s en in ~igur~s 1 and 2, the two part~ I, 2 of the suction handpiece are conrlec ted in the intermediate area 3 0 by a hinge, the axis of rotation 3 of which is perpendicular to the 2t~ 0~
axis of the first channel sections 4, 5 and of the s~cond channel sections 11~ 12. In the intermediate area 30, the channel sections ~, 5 merge into each other in a Z-shape, the plane of sepaxation of the two parts 1, 2 being perpendicular to the axis of rotation 3. Each channel section 4, 5 has an~o~ening within a sleeve-like extension piece 14, 17 and these are pushed into aach other and sealed by means of an O-ring 15. The channel sections 11 and 12 extend radially to the axis of rotation, the first handpiece part 1 incorporating a chamber 13 that extends along the pexiphery so as to correspond at least to an angle of rotation of approximately 16. This means that the flow connection through the chamber 13, between the two channel sections 11, 12, is ensured in every po~ition of the two parts 1, 2 o~ th~ suction handpiece.
In the embodiment shown in figures 3 to 5, the two parts 1, 2 of the handpiece are connected through an axis of rotation 3 that is perpendicular to th~ first and second channel sections 4, 5 and 11, 12s In the intermediate area 30 of the ~irst handpiece par~
1, there is a chamber 16 and 13 that extends across the area o~
the angle of rotation so that there is a flow connection between both channels. Both the suction channel as well as the feed channel ar~ of constant cross-section, with the exception of the widen~d parts, and thus incorporate no constrictions~ which m~ans that undesirable deposits can be avoid~d, particularly in the suction channel.
.
The em~odiment in figur~ 6 shows~an intermediate area 30 of the two handpiece parts 1, 2 or of the channel sections 4 and 5. The intermediate are~ 30 o~ the ~irst handpiece part 1 is spherical and the axis of rota~ion 3 once again runs parallel to the two axe~ o the channel sections 4, 5. The hinge area of the sacond handpiece part 2 has a sleeve-like extension 14 that is inserted 2 1 ~ 3 WO 93/19696 PC~AT93/00057 into a pocket in the spherical hing~ ar~a and sealed by the O-ring 15. Because the extension 14 is open on both sides, the suction channel 22 is divided into two parts in the area of the hinge. Ther2 is no feed channel 21 for th~ additive in this embodiment, although one can be incorporated in the manner described.
Figures 7 and 8 show an embodime~t in which once again there are first and second channel s~ctions 4, 5; 11, 12 in the suction handpie¢e~ In this embodiment, the axi~ of rotation 3 runs outside the suction chann~l 22 and includes a hinge pin 8 which passes thxough a middle hinge tab 6 and two external hinge tab 7.
Within the intermediate ~rea 30, the ~uction channel 22 runs between the $wo suction handpiece parts 1, 2, bent at an angle o~
approximately 90 outside the hinge tab 6, 7; the channel section 4 of the first handpiece part 1 ha~ a smaller pa~sage cxoss-section, so that it fits into the channel section 5 of the second handpiece part 2J . An O-ring 38 or ~3imilar seals the two channel sections 4, 5, which can be rotated by approximately 80 within each other, and the cross-section o.E which is, in each instanc~, preferably a ~lattened circular sur;Eace that is parallel to the hinge pin 8. In order to permit this rotation within each other between the channel section 4 of the ~irst handpiece part 1 and the hinge tab 6 there is an arc-shaped slot 18. The hose connector 28 supports a stepped spigot end 44 and a peripheral ~roove 36 is ~orme~ on this, between two O-rings 49 that are of different diameter~. A channel 47 that i5 curved toward~ the outside opens out into this and this channel forms the closed end o~ a groove 37 of the hose connector 28. The end of a feed hose, of a feed channel 21, lies in this channel 37 if the hose conn~c~or~8 ~ ~lugg~d onto a suction hose 10~ to the in ide ... .
wall o~ which this is f ixed . The end of the suction hose 10 is enclosed and sealed of f by an outer sle~ve 4 3, so that the 2 1. ~'~ 0 ~3 `~ L~
WO 93/19695 PC~ 93fO0057 additi~e that is ~ed through the feed channel 21 can only emerge into the peripheral groove 36 through the curve channel 47.
The second handpiece part 2 has a stepped wall and the sealing rings ~9 of the spigot 44 seals the suction channel ~2 against the peripheral groove 36 on both sides ~ this. A section 12 of the feed channel 21 opens out into the stepped wall and thi~ -continues through one o~ the two hînge tabs 7 (figur~ 8) into the drilling for th~ hing~ pin 8~ The hinge pin 8 incorporates a peripheral constriction 19 so that the additive that moYes through th~ channel section 12 into the drilling ~or th@ hinge pin 8 can move along the periph~ral const~iction 19 into the middle hinge tab 6 of the ~irst handpiec~ part 1, in which the further section 11 of the feed channel 10 continues as far as a second peripheral groove 36. The section o~ the first handpiece part 1 that adjoins thQ p~ripheral groove 36 forms a coupl~ng sleeve 25 Into which th~ suction cannula 3 can be inserted. On the outside, the coupling sleeve 25 incorporates longitudinal ribs 31 and longitudinal grooves 32 that connect th~ peripheral gro~ve 36 to a front annular chamber 23, from which a plurali~y o~ openi~gs 24 open out into the suc:tion channel 22. Thus, the openings ~4 form a dispen~ing point fnr the additive between the suction handpiece and the suction cannula 9. An outer sleev~ :
that is pushed on serves, in particular, as ~n outer limit ~or th~ peripheral groov~ 36, the longitudinal grooves 32 and the annular chamber 23.
The embodi~nt shcswn in f igures 9 and 10 has a suction handpiece that is similar to the ~3mbodimerat shown in f igures 7 and 8 . The ess~ntial ~di~nce 1 ie in thQ seal between the two channel seations 4, 5, ~or in this embodiment the intermediate area 30 of the two handpiece parts 1, 2 consists o~ a hose element 20 that is conrlec:t~d to the channel sections 4, 5 D In the inserted 2 ~
position ~hal: is shown in ~igure 9 t the hose elPm~nt 20 is ~olded back c~nto itsel~ on the inside and unfolds when the suction handpiece is rotated. In place of the ho~:~ element 20 that is shown in an exaggerated conical shapa in figure lo, an external bellows or the like can be fixed on the two parts 1, 2 o~ the su~::tion handpies::e.
An embodiment with a corrugated concertirla hose sectiorl in the in~ermediate area 30 is shown in figure lî. ~he intermediate area can be curved plastically wh~n the depth of the pleats 34 diminishes to zero from the defined s:~utex sid~ o~ the arc to the def ined inner ~;ide oiE the arc:: . On the inner side o the arc, which ~s thus not subj ected to any change in length, the transition canal is provided bekween the two channel sections 11, 12 o~ the feed charlnel 21, along the non-lc:orrugated wall oiE the intermediate area 3 0 . For example, it is cemented into the interm~diate areat fonned in the walls of the intermedia~e area 3 0, s~r the 1 ike . As can be seen in the embodimerlt shown in f i~ures 7 and 8, the two handpiece parts 1, 2 each include a coupling sleeve 25 for ~:he suction cannulas and a connector sl~eve 50 ~or the suction hose 10 with the feed channel 21~.
Figure 12 shows an embodiment with an elastically curvable intexmediate area 3û. This has a coil æpring 33 and is mamlfac:tured from a soft hose that is provided with the coupling sleev~ 25 and a c:oupling sleeve 50. The two handpiece parts 1, 2 thus change their length in khat they adapt ~o the hand of the user and change the angl~ when the hand is moved. A trarlsil:ion ch~nnel for feeding the additiv~ îs ~ormed in the ~hreads o~ the screw and, as~ shs:)wn in figure 12, pre~srably contains the coil spring 33,
WO 93~19696 PC~/A~93/00057 handpiece has a second channel section r these being connected in the intermediate area through a transition channel.
In the embodiment with the elastically curvable intermediate area, the transition channel is made b~tween the,~o chànnel sections, preferably in the turns of the coil. When this is done, it can either run between the coil spring or can con ain the coil spring.
In the v2rsion with the plastically curvable intermediate area, it is preferred that the transition channel be arranged along the wall of the intermediate area with its axis parallel to the axis of this. Thus, the version with concertina-~ype bellows, the pleat depth of which dif~ers around the periphery, is particularly advantageous because the length of the transition channel must not change if th~ depth of the pleats in the area of the transition channel is practically zero ~or all practical purpose~.
A ~urther embodiment is such that the axis of rotation is perpendîcular to its two axes. A prefarred embodiment is such that ~ach second channel ~ection is guided in ~ hinge tab and op~ns out into the bearing drilling for the hinge pin. A sacond channel is formed in the ar~a ~f the hinge pin, in particular by a peripheral constriation that~joins the two outl~t~. In the above e ~ odime~t with the capsule-lik~ hinge area, the second :channel sections are guid~d in~a ~imilar manner to the first ~hannel sections and separated ~Eom thes~ by an int~rmediate bottom.
The present inv~ntion is described in gr~ater detail ~elow on th~
basis of the drawings appended hereto, without being restrict~d to these.
2l~îîa3 - -h-O 93,~19696 ~CT/~T93/~0057 Figures 1 and 2 show a ~irst embodiment in longitudinal section and in plan view;
Figures 3 to 5 show a second embodiment in longitudinal section and in c:ross section on the lines IV-IY and V V ,~figure 3;
Figure 5 [sic~ shows a third ~mbodiment in cross- section:
~igures 7 arld 8 show a further embodiment;
Figures 9 and 10 show an embodiment similar to figure 7 with anot~ler seal arrangeTnent;
Figures 11 and 12 ~how a ~urther embodiment with a curva~le ir~termediate area~
A suction handpiec~ has a f irst handpiece 1 that serve~3 as a grip and a further handpiece 2, ther2 being an inte~nediate area 3 0 between the~;e. Each handpiece part 1, 2 contairls a channel ec:tion 4 t 5 o~ a suction channel 22 ( ~igure 7 ); a suction cannula 9 is in~tall~3d on the :eirs~ handpiece part 1 amd a suction hose is installed on the second handpiece part 2, by means of a hose conn~cto~ 280 It is pre~erred that the kwo handpie~e parts 1 and 2 ~ac:h aontalll a secorld channel section 11, 1~, as can be s~en from ~igure. . 1 to 5 ~ 7, and 8, these forming par~ of a iEeed channel 21 through which ~n additi~r~ can }:e passed as far ~s the area o~ the push coupling :~or the suction cannula 9. ~his add:Ltive aontain a cleaning agent and~or a disin~ecting agent and/or an anti-~c3am agent.
,,, ~
A~ can be s en in ~igur~s 1 and 2, the two part~ I, 2 of the suction handpiece are conrlec ted in the intermediate area 3 0 by a hinge, the axis of rotation 3 of which is perpendicular to the 2t~ 0~
axis of the first channel sections 4, 5 and of the s~cond channel sections 11~ 12. In the intermediate area 30, the channel sections ~, 5 merge into each other in a Z-shape, the plane of sepaxation of the two parts 1, 2 being perpendicular to the axis of rotation 3. Each channel section 4, 5 has an~o~ening within a sleeve-like extension piece 14, 17 and these are pushed into aach other and sealed by means of an O-ring 15. The channel sections 11 and 12 extend radially to the axis of rotation, the first handpiece part 1 incorporating a chamber 13 that extends along the pexiphery so as to correspond at least to an angle of rotation of approximately 16. This means that the flow connection through the chamber 13, between the two channel sections 11, 12, is ensured in every po~ition of the two parts 1, 2 o~ th~ suction handpiece.
In the embodiment shown in figures 3 to 5, the two parts 1, 2 of the handpiece are connected through an axis of rotation 3 that is perpendicular to th~ first and second channel sections 4, 5 and 11, 12s In the intermediate area 30 of the ~irst handpiece par~
1, there is a chamber 16 and 13 that extends across the area o~
the angle of rotation so that there is a flow connection between both channels. Both the suction channel as well as the feed channel ar~ of constant cross-section, with the exception of the widen~d parts, and thus incorporate no constrictions~ which m~ans that undesirable deposits can be avoid~d, particularly in the suction channel.
.
The em~odiment in figur~ 6 shows~an intermediate area 30 of the two handpiece parts 1, 2 or of the channel sections 4 and 5. The intermediate are~ 30 o~ the ~irst handpiece part 1 is spherical and the axis of rota~ion 3 once again runs parallel to the two axe~ o the channel sections 4, 5. The hinge area of the sacond handpiece part 2 has a sleeve-like extension 14 that is inserted 2 1 ~ 3 WO 93/19696 PC~AT93/00057 into a pocket in the spherical hing~ ar~a and sealed by the O-ring 15. Because the extension 14 is open on both sides, the suction channel 22 is divided into two parts in the area of the hinge. Ther2 is no feed channel 21 for th~ additive in this embodiment, although one can be incorporated in the manner described.
Figures 7 and 8 show an embodime~t in which once again there are first and second channel s~ctions 4, 5; 11, 12 in the suction handpie¢e~ In this embodiment, the axi~ of rotation 3 runs outside the suction chann~l 22 and includes a hinge pin 8 which passes thxough a middle hinge tab 6 and two external hinge tab 7.
Within the intermediate ~rea 30, the ~uction channel 22 runs between the $wo suction handpiece parts 1, 2, bent at an angle o~
approximately 90 outside the hinge tab 6, 7; the channel section 4 of the first handpiece part 1 ha~ a smaller pa~sage cxoss-section, so that it fits into the channel section 5 of the second handpiece part 2J . An O-ring 38 or ~3imilar seals the two channel sections 4, 5, which can be rotated by approximately 80 within each other, and the cross-section o.E which is, in each instanc~, preferably a ~lattened circular sur;Eace that is parallel to the hinge pin 8. In order to permit this rotation within each other between the channel section 4 of the ~irst handpiece part 1 and the hinge tab 6 there is an arc-shaped slot 18. The hose connector 28 supports a stepped spigot end 44 and a peripheral ~roove 36 is ~orme~ on this, between two O-rings 49 that are of different diameter~. A channel 47 that i5 curved toward~ the outside opens out into this and this channel forms the closed end o~ a groove 37 of the hose connector 28. The end of a feed hose, of a feed channel 21, lies in this channel 37 if the hose conn~c~or~8 ~ ~lugg~d onto a suction hose 10~ to the in ide ... .
wall o~ which this is f ixed . The end of the suction hose 10 is enclosed and sealed of f by an outer sle~ve 4 3, so that the 2 1. ~'~ 0 ~3 `~ L~
WO 93/19695 PC~ 93fO0057 additi~e that is ~ed through the feed channel 21 can only emerge into the peripheral groove 36 through the curve channel 47.
The second handpiece part 2 has a stepped wall and the sealing rings ~9 of the spigot 44 seals the suction channel ~2 against the peripheral groove 36 on both sides ~ this. A section 12 of the feed channel 21 opens out into the stepped wall and thi~ -continues through one o~ the two hînge tabs 7 (figur~ 8) into the drilling for th~ hing~ pin 8~ The hinge pin 8 incorporates a peripheral constriction 19 so that the additive that moYes through th~ channel section 12 into the drilling ~or th@ hinge pin 8 can move along the periph~ral const~iction 19 into the middle hinge tab 6 of the ~irst handpiec~ part 1, in which the further section 11 of the feed channel 10 continues as far as a second peripheral groove 36. The section o~ the first handpiece part 1 that adjoins thQ p~ripheral groove 36 forms a coupl~ng sleeve 25 Into which th~ suction cannula 3 can be inserted. On the outside, the coupling sleeve 25 incorporates longitudinal ribs 31 and longitudinal grooves 32 that connect th~ peripheral gro~ve 36 to a front annular chamber 23, from which a plurali~y o~ openi~gs 24 open out into the suc:tion channel 22. Thus, the openings ~4 form a dispen~ing point fnr the additive between the suction handpiece and the suction cannula 9. An outer sleev~ :
that is pushed on serves, in particular, as ~n outer limit ~or th~ peripheral groov~ 36, the longitudinal grooves 32 and the annular chamber 23.
The embodi~nt shcswn in f igures 9 and 10 has a suction handpiece that is similar to the ~3mbodimerat shown in f igures 7 and 8 . The ess~ntial ~di~nce 1 ie in thQ seal between the two channel seations 4, 5, ~or in this embodiment the intermediate area 30 of the two handpiece parts 1, 2 consists o~ a hose element 20 that is conrlec:t~d to the channel sections 4, 5 D In the inserted 2 ~
position ~hal: is shown in ~igure 9 t the hose elPm~nt 20 is ~olded back c~nto itsel~ on the inside and unfolds when the suction handpiece is rotated. In place of the ho~:~ element 20 that is shown in an exaggerated conical shapa in figure lo, an external bellows or the like can be fixed on the two parts 1, 2 o~ the su~::tion handpies::e.
An embodiment with a corrugated concertirla hose sectiorl in the in~ermediate area 30 is shown in figure lî. ~he intermediate area can be curved plastically wh~n the depth of the pleats 34 diminishes to zero from the defined s:~utex sid~ o~ the arc to the def ined inner ~;ide oiE the arc:: . On the inner side o the arc, which ~s thus not subj ected to any change in length, the transition canal is provided bekween the two channel sections 11, 12 o~ the feed charlnel 21, along the non-lc:orrugated wall oiE the intermediate area 3 0 . For example, it is cemented into the interm~diate areat fonned in the walls of the intermedia~e area 3 0, s~r the 1 ike . As can be seen in the embodimerlt shown in f i~ures 7 and 8, the two handpiece parts 1, 2 each include a coupling sleeve 25 for ~:he suction cannulas and a connector sl~eve 50 ~or the suction hose 10 with the feed channel 21~.
Figure 12 shows an embodiment with an elastically curvable intexmediate area 3û. This has a coil æpring 33 and is mamlfac:tured from a soft hose that is provided with the coupling sleev~ 25 and a c:oupling sleeve 50. The two handpiece parts 1, 2 thus change their length in khat they adapt ~o the hand of the user and change the angl~ when the hand is moved. A trarlsil:ion ch~nnel for feeding the additiv~ îs ~ormed in the ~hreads o~ the screw and, as~ shs:)wn in figure 12, pre~srably contains the coil spring 33,
Claims (18)
1. A suction handpiece for dental suction implements with a first handpiece part (1) on which a suction cannula (9) can be pushed, with a second handpiece part (2), on which a suction hose (10) can be pushed, and with an intermediate area (30) between the two handpiece parts (1, 2), each of which has a channel section (4, 5), the angle between these being variable, characterized in that the two handpiece parts (1, 2) can be adjusted in their common axial plane.
2. A suction handpiece as defined in claim 1, characterized in that an elastically curvable intermediate area (30) is incorporated between the two handpiece parts.
3. A suction handpiece as defined in claim 2, characterized in that the intermediate area (30) incorporates a coil spring (33).
4. A suction handpiece as defined in claim 1, characterized in that a plastically curvable intermediate area (30) is incorporated between the two handpiece parts.
5. A suction handpiece as defined in one of the claims 2 to 4, characterized in that the intermediate area (30) is configured so as to be corrugated.
6. A suction handpiece as defined in claim 5, characterized in that the pleat depth differs in the peripheral direction.
7. A suction handpiece as defined in claim 1, characterized in that the two handpiece parts (1, 2) can be adjusted about an axis of rotation (3) that is perpendicular to the common axial planes of the two channel sections (4, 5).
8. A suction handpiece as defined in claim 7, characterized in that the two handpiece parts (1, 2) are curved and arranged so as to slide one within the other, and the axis of rotation (3) passes through the mid-point of the curvature of the two curved channel sections (4, 5).
9. A suction handpiece as defined in claim 8, characterized in that hinge tabs (6, 7) are formed on the two handpiece parts (1, 2), a hinge pin (8) being supported in these tabs.
10. A suction handpiece as defined in claim 7, characterized in that the axis of rotation (3) is perpendicular to the axes of the two channel sections (4, 5).
11. A suction handpiece as defined in one of the claims 1 to 10, characterized in that each of the two handpiece parts (1, 2) incorporates a second channel section (11, 12) which are connected in the intermediate area (30) by a transition channel.
12. A suction handpiece as defined in claim 2 and claim 11, characterized in that the transition channel is arranged between the two second channel sections (11, 12) in the turns of the coil.
13. A suction handpiece as defined in claim 3 and claim 12, characterized in that the transition channel contains the coil spring (33).
14. A suction handpiece as defined in claim 6 and claim 11, characterized in that the transition channel be arranged along the wall of the intermediate area with its axis parallel to the axis of this.
15. A suction handpiece as defined in claim 14, characterized in that the depth of the pleats in the area of the transition channel is practically zero.
16. A suction handpiece as defined in claim 7 and claim 11, characterized in that the axis of rotation is perpendicular to the axes of the second channel section.
17. A suction handpiece as defined in claim 9 and claim 11 characterized in that each second channel section is guided in a hinge tab and opens out into the bearing drilling for the hinge pin.
18. A suction handpiece as defined in claim 17, characterized in that the hinge pin incorporates a peripheral constriction that joins the two outlets.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0067392A AT399452B (en) | 1992-04-02 | 1992-04-02 | SUCTION HANDPIECE FOR DENTAL SUCTION SYSTEMS |
| ATA673/92 | 1992-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2110503A1 true CA2110503A1 (en) | 1993-10-14 |
Family
ID=3496809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002110503A Abandoned CA2110503A1 (en) | 1992-04-02 | 1993-03-30 | Suction handpiece for dental suction implements |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0588995A1 (en) |
| JP (1) | JPH06508293A (en) |
| AT (1) | AT399452B (en) |
| AU (1) | AU3817293A (en) |
| CA (1) | CA2110503A1 (en) |
| WO (1) | WO1993019696A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE413263C (en) * | 1923-08-16 | 1925-05-04 | Karl Ludwig Lanninger | Articulated pipe string with hollow bodies connected by elastic collars |
| US1947389A (en) * | 1932-01-18 | 1934-02-13 | Fried Earl Roy | Dental and surgical ejector |
| CA1168072A (en) * | 1980-09-04 | 1984-05-29 | Bror A.E. Andersson | Suction device such as a dental aspirator or sucker |
| IT1201707B (en) * | 1986-07-24 | 1989-02-02 | Cattani Off Augusto & Co | DEVICE TO STOP THE SUCTION OF THE SINGLE CANNULAS OF A DENTAL SUCTION SYSTEM |
| US5080587A (en) * | 1988-07-30 | 1992-01-14 | Hyoichyro Miyao | Instrument for discharging water in the mouth for dental treatment |
| DE58904845D1 (en) * | 1989-04-06 | 1993-08-05 | Siemens Ag | DENTAL SUCTION HANDPIECE. |
| US5078603A (en) * | 1989-09-22 | 1992-01-07 | Howard Cohen | Filtering suction nozzle |
| FI90818C (en) * | 1991-11-08 | 1994-04-11 | Planmeca Oy | Dentist suction device closing mechanism |
| DE9204544U1 (en) * | 1992-04-02 | 1992-05-27 | Pregenzer, Bruno, Oberperfuß | Pipe elbow |
-
1992
- 1992-04-02 AT AT0067392A patent/AT399452B/en not_active IP Right Cessation
-
1993
- 1993-03-30 WO PCT/AT1993/000057 patent/WO1993019696A1/en not_active Application Discontinuation
- 1993-03-30 JP JP5516888A patent/JPH06508293A/en active Pending
- 1993-03-30 EP EP93903092A patent/EP0588995A1/en not_active Withdrawn
- 1993-03-30 CA CA002110503A patent/CA2110503A1/en not_active Abandoned
- 1993-03-30 AU AU38172/93A patent/AU3817293A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ATA67392A (en) | 1994-10-15 |
| WO1993019696A1 (en) | 1993-10-14 |
| AU3817293A (en) | 1993-11-08 |
| JPH06508293A (en) | 1994-09-22 |
| AT399452B (en) | 1995-05-26 |
| EP0588995A1 (en) | 1994-03-30 |
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Legal Events
| Date | Code | Title | Description |
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| FZDE | Dead |