JPH06508293A - Suction handpiece for dental suction device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Suction handpiece for dental suction device Technical field The present invention includes a first handpiece portion to which a suction cannula can be attached and a suction tube. a second wearable handpiece portion and a central region between the handpiece portions; Each hand piece part has a passage part, and the mutual angle can be changed. The present invention relates to a suction handpiece for a dental suction device.

Background technology Such a suction handpiece is described, for example, in European Patent Application No. 390 951. Ru. There, both handpiece parts are turned from the extended position of 0° to approximately 60°. Therefore, the support range is formed obliquely to the passage axis, and the swing axis is tilted at an angle of approximately 30°. Extends within the bearing area at an angle. This allows the grip with the suction cannula to The swinging part, which is firmly held and carries the suction tube, moves along the conical surface when turning. Also perform rocking movements. In this way, the suction tube protrudes from the grip in the changing direction. do. However, the suction tube should always extend consistently over the operator's hand. Therefore, when turning, the entire suction handpiece rotates in the opposite direction around the axis of the grip. There must be. In this case, the suction cannula rotates together, but the cannula It still has to rotate in the opposite direction. Therefore, the rotation of the suction handpiece During the process, several regrips and maneuvers are required to maintain the selected operating position.

Disclosure of invention Therefore, it is an object of the present invention to achieve a simple turning of the drawing part of the suction handpiece. And so.

According to the present invention, this problem can be solved by adjusting both handpiece parts in a common axial plane. This is solved by

This allows the suction handpiece to align with the desired suction tube position on the back of the hand and the patient's mouth. The desired suction cannula position can be achieved within the . Even if you turn the second handpiece part of the suction handpiece, it will not work in one plane. This prevents the first handpiece portion from rotating around its longitudinal axis. The suction cannula therefore does not undergo any rotations that would require its reverse feeding.

In a first preferred embodiment, an elastically bendable central region is provided between the two handpiece parts. That's it. In this embodiment, the central region of the suction handpiece preferably has an angle of curvature. A flexible piece of tubing or tubing that maintains its flow cross-section regardless of the degree of flow. child This can be made integrally with both handpiece parts or as a separate part. It can also be combined with these. In this case, coil springs are installed in the wall especially in the central part. It consists of a tube piece with.

In a further preferred embodiment, a three-dimensionally bendable central region is provided between the two handpiece parts. It is provided for. In this case the suction handpiece will be in the selected corner until the next change. maintain the degree. This can also be advantageous, as will be discussed further below. the The central area can be shaped like a bellows. towards the inside, that is, the curved axis. If the length of the central range should not change on the facing side, preferably the crease depth There are various shapes in the circumferential direction. This allows the bellows to extend at maximum bending. , this also achieves curvature restriction, with the tightest folds occurring when the handpiece is in a straight position. It will be folded.

In another embodiment, the pivot wheel extends perpendicularly to an axial plane common to both passage sections. Both handpieces are adjustable. The swing wheel is on the outside of the passageway. In this case, the side handpiece parts are arranged in a curved manner so that they can slide into each other in a nested manner. It is particularly advantageous if the pivot axis also passes through the centers of curvature of the two curved channel sections. This fruit The cross-section of the passageway can be kept substantially constant throughout the suction handpiece in this embodiment. Wear. In particular, there are no depressions due to earthworks that could cause sedimentation. Get in Sealing lip between both passage sections that can be slid in a sliding manner or foldable or foldable It is possible to form a flexible gasket. Preferably also on both handpieces. A joint plate is formed on which the joint pin is supported. From this, the passage The necessary outer free space can be created for the pre-sliding movement of the parts.

In a further embodiment, the pivot axis extends perpendicularly to the axis of both passage sections.

In this case, the joint area is, for example, can-shaped.

The cleaning and/or disinfection and/or antifoaming additives are sucked through the suction handpiece. This is preferable because it allows it to be transported within the range of the pull cannula's plug-in coupler. In an embodiment, both handpiece parts each have a second passageway part, which The range is connected via a transition passage.

In embodiments with an elastically bendable central region, the transition passage between the two second passage parts is Preferably, the road runs through Neshiyama. In this case, the transition passage is extended between the coil springs. It can also include a coil spring.

In embodiments with a three-dimensionally bendable central region, the transition passage is preferably The depth of the fold is parallel to the axis along the wall of the area (7. Therefore, the depth of the fold is Embodiments with different bellows are particularly advantageous. Because sometimes If the depth of the groove is virtually zero within the range of the transition passage, the transition passage does not change in length. This is because it is okay.

In a further embodiment, the pivot axis extends perpendicularly to both axes.

In this case, in a preferred embodiment, each second passage section is passed through a coupling plate and a coupling pin is provided. pouring into the bearing hole. In the area of the coupling pin, the second passage communicates especially the two spouts. It is formed by a circumferential taper. In the case of the embodiment with a can-shaped joint area, the second The channel section is guided similarly to the first channel section and is separated from the latter by an intermediate bottom.

The present invention will be explained in detail below based on the figures of the accompanying drawings, without being limited thereto.

Brief description of the drawing FIGS. 1 and 2 show the first embodiment in a longitudinal cross-sectional view and a plan view, and FIGS. 3 to 5 show the second embodiment. It is shown in a longitudinal cross-sectional view and a cross-sectional view along the IV-IV line and the V-v line in FIG. 3, and FIG. The embodiment is shown in cross-section, FIGS. 7 and 8 are further embodiments, and FIGS. 9 and 10 are different seals. An embodiment similar to FIG. 7 with an arrangement, and FIGS. 11 and 12 with a bendable central region. 2 shows another embodiment having the following.

Preferred embodiments for carrying out the invention The suction handpiece has a first handpiece part L that serves as a grip and a further handpiece. a base portion 2, with a central region 30 between the two portions. Each handpiece section 1.2 includes the passage section 4.5 of the suction passage 22 (FIG. 7) and the first handpiece part a suction cannula 9 in the second handpiece part 1 and a tube connection in the second handpiece part 2. The suction tube is attached by means of the material 28. Preferably, FIGS. 1 to 5, FIG. As can be seen from 8, both handpiece parts l, 2 still each have one second passage part 1. 1.12, the passage portion is a part of the supply passage 21, and the supply passage is The additive can then be delivered into the range of the bayonet coupler of the suction cannula 9. Attachment Additives include cleaning agents and/or disinfectants and/or antifoaming agents.

According to FIGS. 1 and 2, the image area 1.2 of the suction handpiece has a coupling in the central region 30. The pivot shaft 3 of the joint is connected to the first passage section 4.5 and the second passage section LL1. It extends perpendicular to the axis of 2. In the central region 30 the passage sections 4.5 are moved into one another in a Z-shape. The separation plane of both parts is perpendicular to the swing axis 3. Each passage section 4.5 has a hole inside the cylindrical extension 14.17, and the extensions are inserted into each other to form a seal. It is sealed by a ring 15. The passage section 11.12 is arranged radially relative to the pivot axis. extending, the first handpiece part l has a chamber 13 forming a transition passage; The chamber has a circumferential length corresponding to a swing angle of at least about 60°. to this Therefore, no matter where the suction handpiece is positioned, the two second passages Between minutes 11 and 12, fluid connection is ensured by chamber 13.

In the embodiments of FIGS. 3 to 5, both handpiece parts 1.2 also have a first passage part 4.5 and a first passage part 4.5. It is connected to the second passage portion 1112 by a swing shaft 3 extending vertically. This embodiment The first handpiece part 1 has one chamber 16, 13 each in the central region 30, and the chain The wheels extend over a range of swing angles and the compartments are fluidly coupled. suction passage The cross section of both the supply passage and the supply passage is constant except for the expanded part, and therefore there is no narrow part. , this particularly prevents undesirable deposits in the suction channel.

The embodiment of FIG. 6 has a central region 30 of both handpiece parts 1.2 or passage parts 4.5. It shows. The central region 30 of the first handpiece part 1 is spherically shaped; The pivot axis 3 again extends perpendicularly to both axes of the passage section 4.5. 2nd Handpie The base part 2 has a cylindrical extension 14 in the joint region, which extends into a pocket in the spherical joint region. It is inserted into the housing and is sealed and held by a seal ring 15. The extension part 14 is Since the sides are open, the suction channel 22 is divided into two parts in the area of the joint. this In the embodiment, the supply passage 21 for the additive is not provided, but it can be compensated for in the manner described above. can be added.

In the embodiment shown in FIGS. 7 and 8, there are also first and second passage portions within the suction handpiece. 4.5.11.12 is provided. In this embodiment, the swing shaft 3 is connected to the suction passage 22. It includes a joint pin 8 that extends on the outside and is inserted through the central joint plate 6 and the two outer joint plates 7. I'm reading. In the central region 30 between the two handpiece parts 1.2, the suction channel 22 is connected to a connecting plate. 6.7 is curved over an angle of approximately 90° on the outside of the first handpiece portion. The passage section 4 of the second handpiece section 2 has a small flow cross section, and thus the passage section 4 of the second handpiece section 2 has a small passage section. Engage within 5 minutes. The two passage sections 4.5, which can be rotated by approximately 80° relative to each other, are fitted with a sealing ring. 38 etc. are sealed, and the cross section of the passage portion is preferably parallel to the coupling pin 8. It is a flat circular surface. The first hand piece part to enable mutual rocking. A curved slot 18 is provided between the passage portion 4 of the l and the connecting plate 6.

The tube connecting member 28 carries a stepped spigot 44, which has two different diameters. A circumferential groove 36 is provided in this spigot between the seal rings 49. outside this circumferential groove. A curved channel 47 flows into the closed end of the groove 37 of the tube connecting member 28. form. Fit the tube connecting member 28 to the suction tube 10, and When the supply tube is fixed to the wall, the end of the supply tube is inserted into this groove 37. There is an end of the supply passage 21. The end of the suction tube IO is connected by an outer sleeve 43. The additive conveyed in the supply passage 21, which is enclosed in a hermetically sealed manner, is routed through the curved passage 47. only can flow out into the circumferential groove 36.

The second handpiece part 2 has a wall step, and the spigot 44 has a seat on both sides of the wall step. A ring 49 seals the suction passage 22 against the circumferential groove 36. One of the supply passages 21 A portion 12 extending further beyond the joint plate 7 (FIG. 8) and into the hole for the joint pin 8 is a wall film difference. pouring inside. The coupling pin 8 has a circumferential taper 19 and the coupling via the passageway portion 12 The additive that has reached the hole for the bottle 8 flows along the circumferential tapered part 19 to the first handpiece part l. into the central joint plate 6 of the feed passage 10, into which another part of the supply passage 10 is connected. The portion 11 extends until the second circumferential groove 36 is reached. The first hand piece part 1 has a circumferential groove The part following 36 is a joint sleeve 25, in which a suction cannula is installed. 9 can be inserted. The joint sleeve 25 is provided with vertical ribs 31 and vertical grooves 32 on the outer surface. The latter connects the circumferential groove 36 with the front annular space 23, and from this space a plurality of A hole 24 empties into the suction passage 22 . Thus the hole 24 is connected to the suction handpiece. An additive addition section is formed between the pull cannula 9 and the pull cannula 9.

In particular, it is the fitting that acts as the outer limit part of the circumferential groove 36, the longitudinal groove 32 and the annular space 23. This is an outer sleeve 29.

The embodiment of FIGS. 9 and 1O uses a suction handpiece similar to the embodiment of FIGS. 7 and 8. show. In this embodiment, the central region 30 of both handpiece parts 1.2 is the passage part 4. ．． 5, the main difference being that both passage sections 4 ．． It is on the seal between 5 and 5.

In the pushed-in position shown in FIG. 9, the tube element 20 is folded inward and the suction handle It spreads when you convert Dopeace. The tube element is shown in an exaggerated conical shape in Figure 10. Instead of the element 20, it is possible to fix an outer bellows or the like to the drawing part 1.2 of the suction handpiece. Can also be done.

An embodiment with bellows in the central region 30 is also shown in FIG. This central range is three-dimensional It is bendable, and the depth of the fold 34 varies from the outer surface of a limited arc to the inside of a limited arc. It gradually decreases towards the surface and reaches zero. This ensures that the length will not change. The transition passage between the two passage sections 11, 12 of the feed passage 21 is located in the central area 3 0 along a non-creased wall, for example pasted in the central area, For example, it is formed on the wall of the range 30. Both handpiece parts l, 2 are shown in Fig. 7, fig. 8 embodiment, respectively a coupling sleeve 25 for a suction cannula and a supply channel. 21 and a connecting sleeve 50 for the suction tube 10.

FIG. 12 shows an embodiment with an elastically bendable central region 30. central range The enclosure has a coil spring 33 and connects the coupling sleeve 25 and the tube connection sleeve 50. It is made of soft chicove.

Both handpiece parts 1.2 are arranged so that they fit into the user's hands and change their angle with the movement of the hands. The position is changed by changing the position. There is also a transition passage to supply additives. The coil spring 33 preferably includes a coil spring 33 as shown in FIG. Ru.

Claims (13)

[Claims] 1. A first handpiece portion (1) to which a suction cannula (9) can be attached and a suction tube The second handpiece part (2) to which the tube (10) can be attached and both handpiece parts ( 1, 2) and a central range (30) between the handpiece parts, respectively. Suction hand for dental suction device having (4, 5) and whose mutual angle can be changed piece, in which both handpiece parts (1, 2) are adjustable in a common axial plane. A suction handpiece characterized by: 2. An elastically bendable central region (30) is provided between the two handpiece parts. The suction handpiece according to claim 1, characterized in that: 3. Claim characterized in that the central region (30) has a coil spring (33) The suction handpiece described in Box 2. 4. A three-dimensionally bendable central region (30) is provided between the two handpiece parts. The suction handpiece according to claim 1, characterized in that: 5. Claims 2 to 3, characterized in that the central region (30) is formed in a bellows shape. 4. The suction handpiece according to any one of 4. 6. Claim 5, characterized in that the depth of the fold varies in the circumferential direction. suction handpiece. 7. Centered on the swing axis (3) extending perpendicular to the axial plane common to both passage sections (4, 5) Claims characterized in that both handpiece parts (1, 2) are adjustable. The suction handpiece described in 1. 8. Both handpiece parts (1, 2) are arranged in a curved manner so that they can slide into each other in a nested manner. It is also characterized in that the pivot axis (3) passes through the centers of curvature of the two curved passage sections (4, 5). 8. The suction handpiece according to claim 7, wherein the suction handpiece has the following characteristics. 9. Joint plates (6, 7) are formed on both handpiece parts (1, 2), and The suction hook according to claim 8, characterized in that the joint pin (8) is supported by a and peace. 10. It is characterized in that the swing axis (3) extends perpendicularly to the axes of both passage sections (4, 5). 8. The suction handpiece according to claim 7, wherein the suction handpiece has the following characteristics. 11. Both handpiece parts (1, 2) respectively connect the second passage parts (11, 12). characterized in that it communicates with the central region (30) via a transition passage. A suction handpiece according to any one of claims 1 to 10. 12. The transition passage between the two second passage parts (11, 12) is arranged in the thread. The suction handpiece according to claims 2 and 11, characterized in that: 13. Claim 3, 1, characterized in that the transition path comprises a coiled spring (33). The suction handpiece described in 2.