DE1916507A1 - Dental ultrasound machine - Google Patents

Description

4690 Herne, 8000 Munich 23,

FreiligrathstraBs 19 ni _n i Inn D Ll BaKr Elsenacfier Strasse 17

P.O. Box 140 r » Pat. Appl. Betzler

Pw.-app. Herrmann-Tr.ntepohl DiP I.- P HyS. Ed U a Γd Bβ! ZI θ Γ Telephone: 39 8011

Telephone: 5 09 30 - 39 3012

S1S62 DipL-3ng. W. Herrmann-Trentepohl 393013

Telegram address : PATENTANWÄLTE ~ Telegram address;

Bahr patents Herne - · ■ Babetzpat Munich

Telex 08 22S Θ53 Telex 05 245 52

~ 7 bank accounts:

Bayrische Vereinsbank Munich 952 287 Dresdner Bank AG Herne 202 436 Postal checking account Dortmund 558 68

Bet: J ₁ . 01 545 W / H.

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March 51, 1969

Sven Karl Lennart Goof »Bjaelkevangen 4» 2800 Lyngby Denmark

Dental ultrasonic device

The invention relates to a dental ultrasound device with a converter for converting electrical energy into mechanical vibrations that act on a vibrating member be transmitted·

Devices of this type usually contain a handle, in which the transducer consisting of a coil and a core member is housed, as well as a tip with the vibrating one Element. In dental devices of this type, a coolant is supplied to the handpiece and ejected onto the teeth. The continuous PIuS of the cooling medium is necessary to keep the teeth and the handpiece cool.

Because of the need for a continuous flow of the Coolant and because of the requirement that the handpiece must have the shape of a relatively slim body, so that it does not become too heavy and easily rests in the dentist's hand, the coolant must pass through channels in the Transducer core can be fed to the vibrating member. this has

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the great deficiency that the g-mr activation of the insert tip serving mechanical vibrations in the coolant to 53.§sj | formations and these bubbles are in turn the cause of a significant noise. . ".... _T ^, ^ -

To solve this problem, the invention proposes / channels for Coolants separate from the converter core, whereby, the problem of noise generation can be completely avoided. ,,., - ■ ;.

Moreover, the inventive device such dimensions that these are the requirements of the dentist Mn ψ clearly a slim design of the hand piece meet.

The invention is based on a dental ultrasound device with a transducer consisting of a coil and a core, an elongated handpiece, bucket tip with a vibrating member, devices for attaching the tip in the handpiece, including devices for the transmission of 'from' vibrations from the transducer to the vibrating member and means of guiding coolant through the handpiece and the splice is characterized in that an inner tubular member is provided around the transducer core at a distance in the handpiece, - the * - the same means for fastening the transducer coil on the tubular member, a second tubular member which surrounds the first tubular member at a distance and creates an elongated first opening space, facilities near the rear end of the handpiece with facilities ssma. Connection of the coolant supply pipe with a coolant channel in connection with the elongated first ring-shaped tree, a coolant nozzle in the tip, tubular members in the tip in a concentric arrangement to produce another inlet space in connection with the nozzle and, in fact, a channel to a connection between the first opening space of the handpiece construction and the other opening space of the tip construction once the tip is mounted on the handpiece.

909844 / 036-2

The invention is to be described in more detail below in the drawings explained. They show drawings in

1 shows a device according to the invention in perspective Depiction;

Pig. 2 the gate part of the Pig device. 1 in a partially pulled apart position of the coffin;

Pig. 3 the front part of the device according to Pig. 2 in the expanded position of the coffin;

Pig. 4 shows the front rope of the device in cross section; Pig. 5

and 6 the device with the devices for switching on and off the ultrasound generating devices; and in

Pig. 7 the devices for switching the ultrasonic devices on and off in a partially exploded view.

In the embodiment shown in the drawing According to the invention, a cylindrical caper is shown, which has a transducer consisting of a coil 14a on a tubular member 14 "a & d a core 13" an elongated one Handpiece A, a tip B with a vibrating member 10, means for attaching the tip to the handpiece including means for transmitting the vibrations from the transducer to the vibrating member and means for Includes carrying the cooling medium through the handpiece and to the tip.

The tip construction B consists of a vibrating link 10, which may be of any suitable form known in the art. The vibrating member 10 is fixed to one substantially cylindrical transmitter member 12 and attached to the attachment point between the vibrating member 10 and the transmitter member 12 is a radial flange 11 with a notch 11a for the passage of a nozzle 21a. The nozzle 21a is firmly attached to a nozzle structure 23 with a passage 22, which in FIG Connection with the Msen member 21a is. You nozzle 23 contains one Front part in which the channel 22 is formed and a rear part Part with a smaller outer diameter in the form of a tubular

909 844/0362 BATH ORIGINAL.

gene member 24 »which the transmitter member 12 in easy Distance Tim gives. The nozzle further includes an attachment member having an enlarged diameter portion with a substantially cylindrical tree for receiving the nozzle and a radially extending rope 25a with an outer shoulder S and an inner shoulder. An outer cylindrical member 29 extends extending from the outer shoulder S of the radially extending part 25a and the cylindrical member 24 surrounds the first mentioned cylindrical member 24 "so that an annular space 24a is created between the two members"

That part of the nozzle structure 23 which will allow the liquid to pass through 22 is limited, is between the above-mentioned inner shoulder of the fastening member 25 with an inserted ring seal 27 and the flange 11 extending radially outward assembled. A fastening member 26 is used to firmly grasp the flange 11 and the nozzle structure 23 against the pack 27. The fastening member 26 is- ^ aiit a central hole for the passage the nozzle 21 and the vibrating member 10 are provided.

The rear end of the transmission link 12 is provided with devices For example, a thread for fastening the converter core 13 is provided. .

After the description of the top construction B is now the Handpiece construction A are described, which are so designed is that they are the tip construction supplying the tip construction can take over with coolants.

The handpiece includes a rear part 32 with a preferably smooth surface and a front part 36, the one has a roughened surface, as can be seen in the drawing • Indicates »« - ~ -

and the front end of the handpiece part 36 is open / self-contained provided radially extending part F, which forms a shoulder, which lies on the shoulder S of the tip construction when the latter is inserted into the handpiece. The length of the outer tubular member 29 is selected so that when the shoulder S engages with the part F, a radially extending tree R

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between the end of the tubular member 29 and the front one End of the inner ear member 14 is formed in the handpiece.

As mentioned above, the transducer core 13 is tubular from the inner Limb 14 surrounded at a distance. The transducer coil 14a is in a annular groove wound on the outside of the tubular member 14 and stands with a microswitch 15 in the rear End of the handpiece in connection. In the front end of the tubular Member 14 is provided with a ring groove with an annular seal 31, which after the tip has been placed on the handpiece on the outer surface of the inner tubular member 24 engages and holds the two parts together and the passage of the coolant to the converter core 13 is prevented.

The tubular member 14 is followed by a second tubular member 2Θ surrounded in such a way that an annular space for the coolant is formed between these two links. The front end of this second tubular member 28 has a rope 23 of reduced inside diameter, which after the Tip on the handpiece surrounds part of the outer tubular member 29 of the fastening member 25 at a slight distance. The inner surface of this part 33 is provided with an annular groove with an annular seal, which is used to handle the handpiece and to hold the tip together and prevent leakage in the coolant passage. The length of the rope 23 with reduced ^ Inner diameter is chosen so that a passage for the coolant from the annular space between the tubular members 14 and 28 in the handpiece for the Radiairaura R.

Preferably, the concentrically arranged tubular members of the handpiece construction are made of insulating material.

The converter core 13 can be magnetized from reduced particles Material in the form of an elongated member with facilities aur releasable connection to the ends of the transmission link exist. The converter core is powered by direct current and an alternating current fed, which orients the crystals of the converter core and an oscillation of the converter core in known catfish evokes. This oscillation is transmitted to the transmitter element 12 transmitted through a connection 17, which is preferably only one

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Maximum zn transfer permitted. This is obtained through a diametrical bore 13 at the connection point. The coil is preferably fed with alternating current of approx. 37 kHz and therefore the vibrating member 10 vibrates at a frequency of this order of magnitude. ?

As mentioned above, the coolant is fed from the rear end of the handpiece through a feed tube 40 which is mounted on a mounting device together with the microswitch 15. This mounting device contains a ring seal 42 which is inserted into the rear part of the outer tubular member 28 of the handpiece fits in such a way that the microscope fe is protected against the water flow. From the supply line 40, the coolant flows, preferably water, through the annular space between the tubular members 14 and 28 of the handpiece _s then through the radial space R then through the Mngraum 24a between the hing members 24 and 29 of the tip and schliesslieh from the tree 24a through the channel 22 to the Ms © 2Ia ₈ The annular space 24a can for example be 1/100 mm ^ whereby it is possible to send the same amount of water through the ring area, which is normally a 'Hohx with a diameter of about 1/2 ma would require. This is of particular importance because the outer diameter of the device should be kept as small as possible.

The switch 15 operates with an elongate member 39 to-w line, which reciprocally mounted within the handpiece and at the other end with an actuator 38 or a Hing in connection is formed between stops on each end of the ring groove 37a in the handpiece is floating.

The outer front file 36 has a part with a reduced Diameter on which the ring groove 37 a forms and on the the hanging member 38 is mounted. The length of this part corresponds to the stroke of the hanging link.

The tubular member 28 is provided with a circumferential shoulder 28 a which is aligned in the radial direction with the front edge 32 a of the outer jacket 32 in order to provide a stop for the hanging member 38

to build. ,

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_BAD ^ "^

The drill 28 fits snugly into the interior of the outer shell 32 and is provided with a longitudinal groove 34 for the elongate member 39 which operates the switch.

The elongated member 39 is on the ring member 38 on the inside attached and to provide a channel for the elongate member 39, the annular groove 37a has a slot 37, which is aligned with the groove 34.

It can be seen that the elongated member 59 in the form of a flat Spring can be designed with a thickness of 0.5 mm, whereby the installation of the switch and the handpiece no larger dimensions make necessary.

The outer diameter of the ring member 38 is slightly larger than that Outside diameter of the handpiece, so that it can be operated easily is.

The whole device is easily in the hands of the dentist and can be grasped with all fingers. The thumb is free for actuating the ring member 38 to switch the device on and off in any position of the tip.

Outside the handpiece are the supply devices for the coolant and the electrical supply cable 16 are preferably combined into a single cable.

It should be noted that the dimensions of the various Parts are not critical with the exception of the front rope, where the dimensions must be kept as small as possible. This means that all other parts of the device can be mass-produced, which increases the cost degrades.

If desired, the tip B including the converter core 13 can be removed from the device where it is held in place by means of the ring seals 30 and 31. It can be replaced by a new rope, with a vibrating one Member and / or nozzle member can also have other shapes. The converter core 13 can also be replaced by a new converter core.

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BATHROOM ORiQINAL - 8 -

9098 4 4/03 * 2

Claims (8)

Patent claims: MJ Dental ultrasound machine with a core and coil existing transducer, an elongated handpiece, a Tip with a vibrating member, means for attaching the tip to the handpiece with means for transmission the vibrations from the transducer to the vibrating member and with means for guiding a coolant through the handpiece and the tip, characterized by the transducer core (13) at a distance in the handpiece (A) surrounding, inner tubular member (14) »devices for fastening the transducer coil (Hi) on the tubular member (14)» a second the first tubular member (14) with the formation of an elongated annular space at a distance surrounding the tubular member (28), devices at the rear end of the handpiece (A) for connecting a coolant line (40) to a coolant channel connected to the elongated first annular space, one to the Tip (B) attached coolant nozzle (21a), pipe members (24 and 29) arranged concentrically in the tip to form another ring area connected to the nozzle (21a), and through a channel for establishing a connection between the first annulus of the handpiece and the other Annular space in the tip when the tip is mounted on the handpiece. 2. Apparatus according to claim 1, characterized e t that the top construction (B) consists of one vibrating member (10) and a substantially cylindrical transmission member (12) which is rigid on the vibrating member (10) is attached, a nozzle construction (23) with a liquid passage (22) and with a fixed nozzle (21a) in Communication with the liquid passage (22), and further characterized in that the transmitter member (12) with a small distance is surrounded by the inner tubular member (24) of the tubular members in the tip construction and a fastening member (25) for the nozzle structure consisting of the outer tubular member (29) which is the inside Surrounds tubular member (24) to form an annular space (24a). 909844/0362 - 10 - 3. Device according to spoke 1 or 2, characterized that the fastening member (25) has a rope of enlarged diameter with a substantially cylindrical Tree for receiving the nozzle (23) contains and on one The end has a radially extending part (25a) with an outer shoulder (8) and an inner shoulder, the one being tubular Link (29) extends from the radially extending rope. 4. Device according to one or more of claims 1 to 3 »characterized in that the nozzle (23) the! shape of an essentially cylindrical member on » has, which is between the inner shoulder of the fastening fe member (25) is mounted with a spacing and a seal (27) and a radially outwardly projecting flange (11) which is fixedly attached to the tip structure at the junction between the vibrating member and the transmission member, the flange having a notch ( 11a) is provided for the passage of the nozzle (21a) and furthermore a fastening member (26) is provided for firmly engaging the tip construction of the flange against the bottom of the fastening construction (25) _{or the like} 5. Device according to one or more of the preceding claims, characterized in that the handpiece has a radially extending part at the front end P (?) Is provided, which defines a shoulder that is marked with a Auseensehulter (S) of the tip construction engage can if the latter is mounted on the handpiece, and further characterized in that the outer drill member (29) of the Tip construction ends in the attached state at a distance relative to the inner drill member (24) in the handpiece, so that a radial tree (B) is created, which connects the singing space of the handpiece and the bing space (24§) of the tip constraint el manufactures. 6. Device according to one or more of claims 1 to 5 »characterized in that the front The end of the second drill member (28) has a part (33) in the handpiece which, when the tip is mounted on the handpiece the outer drill member (29) is a tip construction with little 909844/0362 - 11 - Distance surrounds, and that the inner surface of the part (33) is provided with an annular groove, in which a seal (30) is provided. , 7. Apparatus according to one or more of the preceding claims, dad VL rc; hgeke η η ζ eich; m e t in that the front end of the innereβ tubular member (14) in the handpiece at on the. Handpiece-mounted tip part of the inner tubular member (24-) of the tip slightly spaced; and that the inner surface of the part of the ear member (14) in the handpiece is provided with an annular groove with a seal (31). 8. Device according to one or more of the preceding claims, dadurc hr ge ken η ζ eic h η et that the
concentrically arranged tubular members of the handpiece
Insulating material exist. 9 «Device according to one or more of the preceding claims, since you rch ge ke η η ζ ei ch η et that the
The core consists of bonded particles of a magnetizable material and the focte; one: laig ^ staieekten: limb (13)
up is> the furnishing tox ^ detachable ^ connection- with the rear; End «dfes? Transformer link w (Λ2) '.. owns. BATH ORIGINAL