Source: https://patents.google.com/patent/US6616450B2/en
Timestamp: 2018-05-24 16:13:40
Document Index: 788673920

Matched Legal Cases: ['art 6', 'art 21', 'art 21', 'art 21', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 6', 'art.\n2']

US6616450B2 - Medical and/or dental instrument with oscillatory rod - Google Patents
Medical and/or dental instrument with oscillatory rod Download PDF
US6616450B2
US6616450B2 US09924302 US92430201A US6616450B2 US 6616450 B2 US6616450 B2 US 6616450B2 US 09924302 US09924302 US 09924302 US 92430201 A US92430201 A US 92430201A US 6616450 B2 US6616450 B2 US 6616450B2
US09924302
US20020031744A1 (en )
The invention relates to a medical or dental-medical treatment instrument (1) having a grip sleeve (11), an oscillatory rod (13) which extends longitudinally in the grip sleeve (11) and is mounted therein in a radially or also axially elastically yielding manner, and an oscillation generator (31) for transmitting oscillations to the oscillatory rod (13). In order to attain a compact construction, the oscillatory rod (13) is of a base part and an attachment part which is fixed on the base part.
The invention relates to a medical or dental-medical treatment instrument with an oscillatory rod.
The object of the invention is to so configure a treatment instrument of the kind indicated in the introduction, that a compact construction is achieved.
Below, the invention and further advantages which can be achieved thereby will be explained in more detail with reference to advantageous configurations of exemplary embodiments. There are shown:
The treatment instrument, designated overall as 1, includes a rod-like handpiece 2, preferably extending in a straight manner, and a tool 3 which is connected with the forward end region of the handpiece 2 by means of a releasable tool coupling 4 and forwardly projects from the handpiece 2. The rearward end of the handpiece 2 is releaseably connected with a connection part 6 of a flexible supply line 7 by means of a releasable handpiece coupling 5, which flexible supply line extends from a non-illustrated control apparatus and in which so-called media lines extend to the handpiece 2 which pass through the handpiece coupling 5. Here there may be involved e.g. at least an electrical line, at least an electrical line, a light line, a water line, an air line or a water/air spray line.
In the grip sleeve 11 an oscillatory rod 13, preferably arranged coaxially, is so moveable radially or also axially against an elastic return force, and thus elastically yieldingly mounted, that it can carry out radial and preferably also axial and three-dimensional oscillations or vibrations with a frequency in particular in the sonic or ultrasonic range. For this mounting, a bearing sleeve 14 of elastically compressible material is placed in the grip sleeve 11 and axially fixed, in the forward end region or in the forward half of the grip sleeve 11, on the inner surface of which bearing sleeve at least one bearing ring is formed which closely surrounds the oscillatory rod 13 and thereby mounts the rod, whereby due to the elasticity of the bearing sleeve 14, which is of e.g. rubber or plastics, in particular silicone, the oscillatory rod 13 can carry out radial and preferably also axial or three-dimensional oscillations. In particular when the sleeve 14 is arranged only in the region of an oscillation generator—still to be described, preferably arranged in the middle region of the oscillatory rod 13—the sleeve 14 may be of sound absorbing or sound-soft material.
For the axial positioning of the bearing sleeve 14 in the grip sleeve 11 there may serve shoulder surfaces on the inner surface of the grip sleeve 11, on which shoulder surfaces counter-shoulder surfaces on the outer surface of the bearing sleeve 14 abut. With the present configuration, the bearing sleeve 14 has at its outer surface one or two radial projections 16 a, 16 b, having an axial spacing from one another, which are preferably each formed by means of a rounded annular beading and which in the mounted position are latched into latch recesses 17 a, 17 b, preferably formed by means of annular grooves, in the inner surface of the grip sleeve, in a sprung and thus elastic manner. Since with the present exemplary embodiment the grip sleeve 11 converges forwardly in its cross-sectional size, the bearing sleeve—due to this convergence—finds a movement limitation in the manner of a stop in the forward direction, so that only a shoulder surface limiting a movement rearwardly is necessary. Instead of the forwardly converging conicity 14 a there may also be provided an approximately cylindrically shape with an outer shoulder surface. The radial projections 16 a, 16 b or annular beadings present fulfill the respective axial positioning of the bearing sleeve 14 very well, whereby the bearing sleeve 14 can be inserted from the rear into the grip sleeve 11, whereby the radial projections 16 a, 16 b radially spring in and in the mounted end position self-actingly elastically latch into the latch recesses 17 a, 17 b, whereby the axial positioning of the bearing sleeve 14 is ensured. The length of the bearing sleeve 14 is made clear by means of the reference L.
The oscillation generator 31 is surrounded by a damping sleeve 35, with radial spacing, which may be supported axially and/or radially on the oscillatory rod 13 or on the emplaced part 21. With the present configuration, a rearward hollow cylindrical end section of the damping sleeve 35 engages over a forward end section of the emplaced part 21, whereby between these parts there may be arranged a sealing and/or support ring 27 in an annular groove. Further, the damping sleeve 35 may abut on the emplaced part 21 with an inner shoulder surface 36 and thereby be limited rearwardly. The damping sleeve 35 may extend forwardly up to the bearing ring 15 a, whereby the sleeve may form the counter-shoulder surface 19. In the forward end region, the damping sleeve 35 is tapered relative to its rearward cross-section. In the rearward region the damping sleeve 35 may be mounted in the bearing sleeve 14, preferably in the bearing ring 15 b.
A control device is associated with the oscillation generator 31 for reducing or increasing its power. By these means its power or the intensity of the vibration and the size of the amplitudes can be selectively reduced or increased and thus set. Thereby there may be provided a power regulator 41 for automatic regulation of a preferably constant power and/or a manually settable control device 42 with which the power or the drive pressure deliverable to the oscillation generator 31 is variable and thereby reducible or increasable in steps or continuously. For activating the control device 42 there is provided a setting device 43, preferably in the rearward end region of the handpiece 2 or of the grip sleeve 11. By these means the power of the treatment instrument 1 can be adapted to the work to be accomplished, e.g. coarse or fine working or coarse, medium and fine working, or adapted to different kinds of treatment and/or of the material to be treated and/or with regard to the shape and/or size and/or coarser and finer or coarser, middle and/finer effect of different available tools 3.
In the region a, in which the grip sleeve 11 and/or the bearing sleeve 14 may surround the oscillatory rod 13 or the tool shaft 3 b, a sound damping is likewise attained, whereby in particular the solid-borne sound emitted from the tool coupling 4 and from the tool shaft 3 b is damped. Tests have shown that by means of the extension a a sound is damping of about 15 dB can be attained and this even without a coating of the inner surface with an elastically yielding material. The rearward radial bearing R1 is preferably arranged between the radial annular beadings 16 a, 16 b or in the region of the annular gap 65 b.
In functional operation, the oscillatory rod 13 on the one hand and the tool 3 on the other hand carry out, due to the elongate construction, transversely directed oscillations (FIG. 5) which develop in a sine curve form, i.e. are directed oppositely to one another in longitudinal sections L1, L2, L3 following one another. Between the longitudinal sections L1, L2, L3 there are oscillation nodes S1, S2, S3 in which the amplitudes are practically zero. Between the oscillation nodes S1, S2, S3 amplitude peaks A1, A2 are located in the middle. The rearward oscillation node S1 is at a spacing L4 from the rearward end of the oscillatory rod 13, which is about one quarter of its length L and is preferably arranged in the region of the rearward elastic radial bearing R1. The forward—referring to the oscillatory rod 13—oscillation node S2 is preferably located in the region of the forward elastic radial bearing R2. The forward oscillation node S3 is located preferably in the middle region of the tool section 3 d which is shaped to be arc-like. The longitudinal position of the rearward oscillation node S1 can, through the mass and its centre of gravity SP1, taking into account the centre of gravity SP2 of the remaining body of the oscillatory rod 13, be varied and preferably so adapted that the rearward oscillation node S1 is located in the region of the rearward elastic radial bearing R1.
The handpiece 2 may have the illumination device 71, having at least one light outlet window 73, at the forward end of the handpiece 2. The light outlet window 73 is preferably arranged in the bearing sleeve 14 or 68. It is advantageous to provide at least two light-outlet windows 73 which in particular are provided on the two sides of a longitudinal middle plane E in which the free end region of the tool section 3 d is located or in the case of a transverse offset extends approximately parallel, of FIG. 2. In the present exemplary embodiment, the at least one light outlet window 73 is formed by means of a light conductor 74 which extends at least partly longitudinally through the bearing sleeve 14. Thereby, the light conductor 74 may be fixedly embedded in the bearing sleeve 14 or the bearing sleeve 14 may have, for receiving the light conductor 74, a pre-fabricated hole or a pre-fabricated inwardly open groove 75. As can be seen from FIG. 3, the at least one light conductor 74 extends from an approximately middle position to the outer region of the handpiece 2, whereby it continues further longitudinally through the bearing sleeve. Preferably there are provided two light conductors 74, in mirror-image arrangement, which branch from a common inlet piece. The light can supplied to the rearward end of the at least one light conductor 74 in various ways. There may extend in the region of the handpiece coupling 5 a rearward light conductor, coaxially through the handpiece coupling 5—here through the coupling pin 8—out of which the light is introduced into the light conductor 74. It is also possible to provide a light source, in particular a lamp, in the forward end region of the coupling pin 8, which is connected to an electrical supply circuit which extends through the supply line. The light conductor 74 may extend to a light conductor ring 76 emplaced or embedded in the bearing ring 68 from which light conductor ring one or more light conductor sections 77 may extend forwardly to the light outlet windows 73.
With the exemplary embodiment according to FIG. 11, the forward grip sleeve part 11 b is axially displaceably mounted, indirectly or directly, in the rearward grip sleeve part 11 a and by means of the force of a spring 86 is acted upon into its pushed out position, in which its pushing movement is limited by means of a stop 87. As FIG. 11 shows, the forward grip sleeve part 11 b may be mounted in an inner annular recess 88 in the bearing ring 68 which thus forms a longitudinal guide. The shoulder surface 89 of a tapering of the annular recess 88 can form the stop 87, which co-operates with the shoulder surface of a radial annular attachment in the rearward end region of the grip sleeve part 11 b.
With the exemplary embodiment according to FIG. 11 there is additionally provided an illumination device 71, similar to the configuration according to FIG. 9, having one, more or e.g. three light outlet windows 73 arranged distributed on the circumference, to which in each case a light conductor section 77 extends which starts from a light conductor ring 76 which is emplaced or embedded in the bearing ring 68. With this configuration, the forward grip sleeve part 11 b can be pushed in, for reducing the projection a, e.g. in order to create more free space in the mouth of the patient or to facilitate the access to the engagement element 3 c.
The plug-in/turn coupling 5 makes possible an unrestricted turning of the treatment instrument 1 around its longitudinal axis relative to the connection part 6, whereby in any rotational position the passage of the media in a sealed manner is ensured.
1. An oscillatory medical and/or dental instrument system comprising:
a grip sleeve;
a bearing sleeve longitudinally received in the grip sleeve and coupled thereto;
a hollow first oscillatory rod longitudinally received in the bearing sleeve and coupled thereto, the bearing sleeve elastically coupling the first oscillatory rod to the grip sleeve to permit oscillatory movement of the first oscillatory rod with respect to the grip sleeve;
an oscillation generator coupled to the first oscillatory rod and disposed within the bearing sleeve for transmitting oscillator movement to the first oscillatory rod;
the first oscillatory rod comprising a hollow base end coupled to a hollow first attachment part;
a tool longitudinally received in the first oscillatory rod and coupled thereto and extending through the first attachment part.
2. The system of claim 1 further comprising a plurality of additional hollow oscillatory rods each of which are coupled to a different attachment part to provide oscillatory rod/attachment part combinations of different mass and which are selectively exchangeable with the first oscillatory rod/first attachment part.
a tool longitudinally received in the first oscillatory rod and coupled thereto and extending through the first attachment part; and
a hollow second oscillatory rod having a hollow base end that receives and is coupled to a hollow second attachment part having a mass different than that of the first attachment part to provide a second oscillatory rod and second attachment part combination of a different mass than that of the first oscillatory rod and first attachment part, the second oscillatory rod and second attachment part being exchangeable with the first oscillatory rod and first attachment part;
an oscillation generator for transmitting oscillatory movement to the oscillatory rods.
11. The system of claim 10 wherein the oscillator is disposed within the bearing sleeve.
a bearing sleeve received in the grip sleeve and coupled thereto;
an oscillatory rod which extends longitudinally in the bearing sleeve and which is coupled thereto;
the bearing sleeve elastically coupling the oscillatory rod to the grip sleeve, the oscillatory rod being hollow and comprising a proximal end and a distal base end,
an oscillation generator for transmitting oscillations to the oscillatory rod, the oscillation generator being arranged on a middle region of the oscillatory rod between the proximal and distal base ends thereof and within the bearing sleeve;
the bearing sleeve having an inner surface comprising two fitted bearing rings having an axial spacing from one another for coupling the oscillatory rod to the bearing sleeve, the oscillation generator being disposed longitudinally between the two fitted bearing rings;
a tool longitudinally received in the oscillatory rod and extending out the distal end thereof.
21. The medical or dental-medical instrument system according to claim 20, wherein the bearing sleeve has an outer surface comprising at least one radial projection elastically latched into a latch recess of an inner surface of the grip sleeve.
US09924302 2000-08-10 2001-08-08 Medical and/or dental instrument with oscillatory rod Active 2021-10-11 US6616450B2 (en)
DE20013827U 2000-08-10
DE2000213827 DE20013827U1 (en) 2000-08-10 2000-08-10 Medical or dental-medical treatment instrument having a tool carrier in the form of an oscillating rod
DE20013827.8 2000-08-10
US20020031744A1 true US20020031744A1 (en) 2002-03-14
US6616450B2 true US6616450B2 (en) 2003-09-09
ID=7945044
US09924302 Active 2021-10-11 US6616450B2 (en) 2000-08-10 2001-08-08 Medical and/or dental instrument with oscillatory rod
US (1) US6616450B2 (en)
JP (1) JP3704489B2 (en)
DE (1) DE20013827U1 (en)
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JP2002065699A (en) 2002-03-05 application
JP3704489B2 (en) 2005-10-12 grant
US20020031744A1 (en) 2002-03-14 application
DE20013827U1 (en) 2001-12-20 grant
EP0541249B1 (en) 1996-07-03 Ultrasonic handpiece
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US3858323A (en) 1975-01-07 Dental handpiece
US6065966A (en) 2000-05-23 Medical or dental treatment instrument for the treatment of body tissue or a substitute material, in particular by cutting, and tool for such a treatment instrument
EP0384672A2 (en) 1990-08-29 Ultrasonic surgical scalpel
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WALTER, MOBLE;SCHILLING, BERNHARD;GERD, LOHN;REEL/FRAME:012911/0315;SIGNING DATES FROM 20010717 TO 20020412