WO1993019696A1 - Suction handpiece for dental suction implements - Google Patents
Suction handpiece for dental suction implements Download PDFInfo
- Publication number
- WO1993019696A1 WO1993019696A1 PCT/AT1993/000057 AT9300057W WO9319696A1 WO 1993019696 A1 WO1993019696 A1 WO 1993019696A1 AT 9300057 W AT9300057 W AT 9300057W WO 9319696 A1 WO9319696 A1 WO 9319696A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suction
- handpiece
- channel
- handpiece according
- parts
- Prior art date
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
Definitions
- the invention relates to a suction handpiece for dental suction systems, with a first handpiece part, to which a suction cannula can be plugged, with a second handpiece part, to which a suction hose can be plugged, and with a central region between the two handpiece parts, each having a channel section and whose angle to one another can be changed.
- Such a suction handpiece is described, for example, in EP-A-390 951.
- bearing areas inclined to the channel axes are formed, through which the pivot axis runs at an angle of approximately 30 °.
- the grip part provided with the suction cannula is held in place, and the swiveling part carrying the suction hose also wobbles during pivoting, since it moves along a conical surface.
- the suction hose thus protrudes from the handle part in varying directions.
- the object of the invention is therefore to achieve easier pivoting of the two parts of a suction handpiece. According to the invention, this is achieved in that the two handpiece parts are adjustable in their common axial plane.
- the suction handpiece can thus be held in the hand in such a way that the desired position of the suction hose on the back of the hand and the desired position of the suction cannula in the mouth of the patent are given.
- a pivoting of the second handpiece part of the suction handpiece since it takes place in one plane, does not lead to any rotation of the first handpiece part about its longitudinal axis, and thus to no rotation of the suction cannula, which requires its resetting.
- an elastically curvable central region is provided between the two handpiece parts.
- the central region of the suction handpiece is preferably a soft tube or tube piece that maintains its passage cross-section regardless of the angle of curvature. This can be made in one piece with the two handpiece parts or can also be connected to both as a separate part.
- the middle part consists in particular of a piece of hose with a coil spring in the wall.
- a plastically curvable central region is provided between the two handpiece parts.
- the suction handpiece maintains its selected angle until the next change, which can also be advantageous, as will be explained later.
- the middle region can be formed like a bellows. If the length of the central region on the inner side, that is to say toward the axis of curvature, is not to change, so it is preferably provided that the depth of the folds is different in the circumferential direction. As a result, the bellows is stretched at maximum curvature, which also limits curvature, and is most tightly folded when the handpiece is in a straight position.
- pivot axis lies outside the channel sections, it is particularly advantageous if the two handpiece parts are arranged such that they can be shifted into one another and the pivot axis runs through the center of curvature of the two curved channel sections.
- the cross section of the channel can be kept essentially the same in the entire suction handpiece.
- Sealing lips or foldable or foldable sealing sleeves can be formed between the two channel sections which can be pushed into one another.
- hinge straps are formed on the two handpiece parts, in which a hinge pin is mounted. This allows the formation of the necessary external spaces for pushing the channel sections together.
- the swivel axis runs perpendicular to the axes of both channel sections.
- the joint area is then approximately can-shaped.
- each of the two handpiece parts has a second channel section, which in the Middle area are connected by a transition channel.
- the transition channel between the two second channel sections is preferably guided in screw turns. It can run between the coil spring and contain the coil spring.
- the transition channel is preferably arranged axially parallel along the wall of the central region. It is therefore particularly advantageous to use a bellows, the depth of the folds of which varies over the circumference, since the transition duct does not have to change its length if the depth of the folds in the region of the transition duct is practically zero.
- the pivot axis runs perpendicular to the two axes.
- a preferred embodiment provides here that every second channel section is guided in a hinge plate and opens into the bearing bore for the hinge pin.
- the second channel is formed in particular by a circumferential taper connecting the two mouths.
- the second channel sections are similar to the first channel sections. cuts and separated from this by an intermediate floor.
- FIGS. 1 and 2 show a first embodiment in longitudinal section and in plan view
- FIGS. 3 to 5 show a second embodiment in longitudinal section and sections along lines IV-IV and VV of FIG. 3
- FIG. 5 shows a third exemplary embodiment in section
- FIGS. 7 and 8 a further exemplary embodiment
- FIGS. 9 and 10 an exemplary embodiment similar to FIG. 7 with a different sealing arrangement
- FIGS. 11 and 12 show further designs with a curved central region.
- a suction handpiece has a first handpiece part 1 serving as a handle and a further handpiece part 2, between which a central region 30 is provided.
- Each handpiece part 1, 2 contains a channel section 4, 5 of a suction channel 22 (FIG. 7), a suction cannula 9 being attached to the first handpiece part 1 and a suction hose to the second handpiece part 2 by means of a hose connection piece 28.
- the two handpiece parts 1, 2 preferably each have a second channel section 11, 12, which form parts of a supply channel 21, via which an additive extends into the region of the plug-in coupling the suction cannula 9 can be guided.
- the additive contains a cleaning agent and / or a disinfectant and / or an anti-foaming agent.
- the two parts 1, 2 of the suction handpiece are connected in the central region 30 via a joint, the pivot axis 3 of which extends perpendicular to the axes of the first duct sections 4, 5 and the second duct sections 11, 12 .
- the channel sections 4.5 merge into one another in a Z-shape, the parting plane of the two parts 1, 2 being perpendicular to the pivot axis 3.
- Each channel section 4, 5 has an opening within a sleeve-like extension 14, 17, which are inserted into one another and sealed by means of a sealing ring 15.
- the channel sections 11 and 12 extend radially to the swivel axis, the first handpiece part 1 having a chamber 13 which forms a transition channel and which has at least one extent along the circumference corresponding to the swivel angle of approximately 60 °. This ensures the flow connection through the chamber 13 between the two second channel sections 11, 12 in any position of the two parts 1, 2 of the suction handpiece.
- the two handpiece parts 1, 2 are connected by a pivot axis 3, which runs perpendicular to the first and second channel sections 4, 5 and 11, 12.
- the design has in the central region 30 of the first handpiece part 1 a chamber 16 and 13, which extends over the region of the swivel angle, so that the flow connection of both channels is given.
- both the suction channel and the supply channel have a constant cross section and thus have no narrow points, which prevents undesirable deposits, especially in the suction channel.
- FIG. 6 shows the central region 30 of the two handpiece parts 1, 2 or the channel sections 4 and 5.
- the central region 30 of the first handpiece part 1 is spherical, the pivot axis 3 again running perpendicular to the two axes of the channel sections 4, 5.
- the joint area of the second handpiece part 2 has a sleeve-like extension 14, which is inserted into a pocket of the spherical joint area and is sealed and held by sealing rings 15. Since the extension 14 is open on both sides, the suction channel 22 is divided into two in the region of the joint.
- a feed channel 21 for an additive is not provided in this embodiment, but could be supplemented in the manner described.
- first and second channel sections 4, 5, 11, 12 are again provided in the suction handpiece.
- the pivot axis 3 extends outside the suction channel 22 and comprises a hinge pin 8 which passes through a middle hinge plate 6 and two outer hinge plates 7.
- the suction channel 22 extends at an angle of approximately 90 ° outside the joint plates 6, 7, the channel section 4 of the first handpiece part 1 having a smaller passage cross section so that it engages in the channel section 5 of the second handpiece part 2.
- a sealing ring 38 or the like seals the two channel sections 4, 5 which can be pivoted into one another by approximately 80 °, the cross-sectional area of which is preferably a circular area flattened parallel to the hinge pin 8.
- a curved slot 18 is cut out between the channel section 4 of the first handpiece part 1 and the joint plate 6.
- the hose connector 28 carries a stepped plug-in pin 44 on which a circumferential groove 36 is formed between two sealing rings 49 of different diameters.
- An outwardly curved channel 47 which forms the closed end of a groove 37 of the hose connection piece 28, opens into this.
- the end of a feed hose, the feed channel 21 lies in this groove 37 when the hose connection piece 28 is plugged onto a suction hose 10, on the inner wall of which the feed hose is fixed.
- the end of the suction hose 10 is sealed by an outer sheath 43, so that the additive supplied through the feed channel 21 can only emerge into the circumferential groove 36 via the curved channel 47.
- the second handpiece part 2 has a wall gradation, on the two sides of which the sealing rings 49 of the plug pin 44 seal the suction channel 22 against the circumferential groove 36.
- a section 12 of the feed channel 21 opens, which extends further over one of the two hinge plates 7 (FIG. 8) into the bore for the hinge pin 8.
- the hinge pin 8 has a circumferential taper 19, so that the additive passing through the channel section 12 into the bore of the hinge pin 8 along the circumferential taper 19 can reach the middle hinge plate 6 of the first handpiece part 1, in which the further Section 11 of the feed channel 10 continues up to a second circumferential groove 36.
- the section of the first handpiece part 1 adjoining the circumferential groove 36 forms a coupling sleeve 25 into which the suction cannula 9 can be inserted.
- the coupling sleeve 25 carries longitudinal ribs 31 and longitudinal grooves 32 on the outside, which connect the circumferential groove 36 to a front annular space 23, from which a plurality of openings 24 into the suction channel 22 flow out.
- the openings 24 thus form an addition point for the additive between the suction handpiece and the suction cannula 9.
- a pushed-on outer sleeve 29 serves in particular as the outer boundary of the circumferential groove 36, the longitudinal grooves 32 and the annular space 23.
- FIGS. 9 and 10 shows a suction handpiece which is similar to the embodiment according to FIGS. 7 and 8.
- the essential difference lies in the seal between the two channel sections 4, 5, since in this embodiment the central region 30 of the two handpiece parts 1, 2 consists of a hose element 20 connected to the channel sections 4, 5.
- the hose element 20 In the inserted position according to FIG. 9, the hose element 20 is turned inside and unfolds when the suction handpiece is pivoted.
- an outer bellows or the like can also be used. be fixed to the two parts 1, 2 of the suction handpiece.
- FIG. 11 An embodiment with a bellows in the central region 30 is also shown in FIG. 11.
- the central region can be plastically curved, the depth of the folds 34 being reduced from the defined outside of the arch to the defined inside of the arch to zero.
- the transition channel between the two channel sections 11, 12 of the feed channel 21 is provided on the inside of the arch, which is not subject to changes in length, along the wrinkle-free wall of the middle area 30, for example glued into the middle area, in the wall of the middle area 30, etc.
- the two handpiece parts 1, 2 each comprise a coupling sleeve, as in the embodiment according to FIGS. 7 and 8 25 for the suction cannula and a connecting sleeve 50 for the suction hose 10 with feed channel 21.
- FIG. 12 An embodiment with an elastically curvable central region 30 is shown in FIG. 12.
- This has a helical spring 33 and is made of a soft hose which is provided with the coupling sleeve 25 and a hose connection sleeve 50.
- the two handpiece parts 1, 2 change their position by adapting to the user's hand and changing the angle when the hand moves.
- the transition channel is also guided in screw threads and, as shown in FIG. 12, preferably contains the coil spring 33.
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
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5516888A JPH06508293A (en) | 1992-04-02 | 1993-03-30 | Suction handpiece for dental suction device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA673/92 | 1992-04-02 | ||
AT0067392A AT399452B (en) | 1992-04-02 | 1992-04-02 | SUCTION HANDPIECE FOR DENTAL SUCTION SYSTEMS |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993019696A1 true WO1993019696A1 (en) | 1993-10-14 |
Family
ID=3496809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1993/000057 WO1993019696A1 (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) |
Citations (7)
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 |
WO1982000764A1 (en) * | 1980-09-04 | 1982-03-18 | B Andersson | A suction device such as a dental aspirator or sucker |
US5078603A (en) * | 1989-09-22 | 1992-01-07 | Howard Cohen | Filtering suction nozzle |
US5080587A (en) * | 1988-07-30 | 1992-01-14 | Hyoichyro Miyao | Instrument for discharging water in the mouth for dental treatment |
DE9204544U1 (en) * | 1992-04-02 | 1992-05-27 | Trawoeger, Werner | |
EP0547014A1 (en) * | 1991-11-08 | 1993-06-16 | Planmeca Oy | Shutoff valve mechanism for the oral evacuator of a dental unit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP0390951B1 (en) * | 1989-04-06 | 1993-06-30 | Siemens Aktiengesellschaft | Dental suction hand piece |
-
1992
- 1992-04-02 AT AT0067392A patent/AT399452B/en not_active IP Right Cessation
-
1993
- 1993-03-30 EP EP93903092A patent/EP0588995A1/en not_active Withdrawn
- 1993-03-30 JP JP5516888A patent/JPH06508293A/en active Pending
- 1993-03-30 WO PCT/AT1993/000057 patent/WO1993019696A1/en not_active Application Discontinuation
- 1993-03-30 CA CA002110503A patent/CA2110503A1/en not_active Abandoned
- 1993-03-30 AU AU38172/93A patent/AU3817293A/en not_active Abandoned
Patent Citations (7)
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 |
WO1982000764A1 (en) * | 1980-09-04 | 1982-03-18 | B Andersson | A suction device such as a dental aspirator or sucker |
US5080587A (en) * | 1988-07-30 | 1992-01-14 | Hyoichyro Miyao | Instrument for discharging water in the mouth for dental treatment |
US5078603A (en) * | 1989-09-22 | 1992-01-07 | Howard Cohen | Filtering suction nozzle |
EP0547014A1 (en) * | 1991-11-08 | 1993-06-16 | Planmeca Oy | Shutoff valve mechanism for the oral evacuator of a dental unit |
DE9204544U1 (en) * | 1992-04-02 | 1992-05-27 | Trawoeger, Werner |
Also Published As
Publication number | Publication date |
---|---|
EP0588995A1 (en) | 1994-03-30 |
AT399452B (en) | 1995-05-26 |
AU3817293A (en) | 1993-11-08 |
JPH06508293A (en) | 1994-09-22 |
CA2110503A1 (en) | 1993-10-14 |
ATA67392A (en) | 1994-10-15 |
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