• 专利附录
  • 专利说明
  • 权利要求
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  • 优先权
    • 专利摘要:
    Described is a flushing instrument (1), comprising a vibration part (30) and a syringe part (20) that can be coupled together. The syringe part comprises: a hollow cylindrical body (21) with an inlet end (23) and a narrow needle (25); an axially slidable piston (22) disposed in the interior of the body, which piston (22) on its free side facing away from the nozzle is provided with a coupling member (27) for coupling to the vibration part, for example a screw thread. The vibration part comprises: a housing (31) which is provided at one end with a coupling member (32) for coupling to the spray part, for example a screw thread; a vibration generator (34) mounted in the housing, for example a motor; a battery chamber (39) for receiving a battery (35) that provides electrical power to the vibration generator; a housing mounted user operable switch (36) for energizing the vibration generator.
    公开号:BE1018486A4
    申请号:E2008/0320
    申请日:2008-06-11
    公开日:2011-01-11
    发明作者:Pieter Johannes Wouter Brokx
    申请人:Vibringe B V；
    IPC主号:
    专利说明:

    Title: Medical-dental instruments
    The present invention generally relates to. medical-dental instruments. "
    When a dentist is going to fill a tooth, and in particular when he has to treat a root canal, it is common for him to fill the cavity in the tooth cg. rinses the root canal clean, for example, to remove debris and / or debris (for example bacteria) created during previous drilling operations or fig operations. To this end, it has a kind of syringe, that is to say a piston in a cylinder, with a pointed needle, the end of which is in the cavity made in the tooth. root canal is placed. The dentist presses on the piston, which squeezes rinsing fluid out of the cylinder, and through the needle a jet of rinsing fluid injects into the cavity of the root canal. The quality of the end result of the treatment, for example the filled root canal, depends, among other things, on a well-performed rinsing operation: if inaccurate rinsing I and dirt and bacteria are left behind, inflammation can occur, for example.
    It is. It has been found that the quality of the flushing operation depends to a large extent on the craftsmanship of the relevant dentist. If it generates a rinsing jet i too forcefully, for example by using ultrasonic rinsing techniques, there is a risk of damage to the soft tooth tissue. On the other hand, a jet that is insufficiently powerful has an insufficient cleaning effect.
    It has been found that under normal circumstances the cleaning efficiency of a rinsing treatment is often not 100%, but that the cleaning efficiency can be improved by causing the rinsing jet to vibrate. This improvement of the cleaning effect is known per se, and the state of the art relates to large, complicated and expensive equipment for generating an ultrasonic vibration, which vibration is transmitted to the piston / cylinder combination by means of one or more hoses. These hoses make it difficult to handle the flushing syringe easily.
    Moreover, a problem of a prior art approach is that the extreme tip of the pointed spray needle vibrates hard in the transverse direction, and thus can strike hard against the wall of the root canal to be treated, which is not only unpleasant but also can lead to damage to healthy tissue.
    The present invention has for its object to eliminate the said problems or at least to reduce them. More specifically, it is an object of the present invention to provide a simplified and relatively inexpensive instrument that is easy to handle and capable of providing an effective vibrating rinsing jet with a good cleaning effect.
    According to an important aspect of the present invention, the flushing syringe is provided with a simple battery-powered vibrator motor. Experiments have shown that good results can be achieved in this way.
    These and other aspects, features and advantages of the present invention will be further elucidated by the following description with reference to the drawings, in which like reference numerals indicate like or similar parts, and in which: figure 1 schematically shows a longitudinal section of a possible embodiment of a rinsing instrument proposed by the present invention; Figure 2 schematically shows a perspective view of a preferred embodiment of a flushing instrument according to the present invention; Figure 3 is a schematic perspective view of a vibration part; Figures 4A and 4B illustrate a docking station; Figure 5 is a schematic perspective view showing details of the coupling between a piston and a vibration member.
    In Fig. 1, a flushing instrument 1 according to the present invention is schematically shown to illustrate its operating principle. The flushing instrument 1 comprises two parts that can be coupled to each other, namely a spray part 20 and a vibration part 30.
    The spray part 20, which can be made of an at least partially transparent plastic, comprises a hollow cylindrical body 21 with an axially displaceable piston 22 arranged in its interior. The cylindrical body 21, also referred to as "the cylinder", has an entrance end 23 with outwardly protruding wings or flange 24, typically suitable so that the user (dentist) can place two fingers behind it on either side of the cylindrical body 21. On the other hand, the cylindrical body 21 has an outlet nozzle 29, with screws attached thereto, typically screwed, a syringe needle 25, typically suitable for placement in a hollow root canal (and also referred to as a nozzle or needle). The nozzle is only schematically shown in the figure, since the construction thereof is known per se. In more detail, it can be noted that the nozzle is typically designed as a thin hollow metal needle, which is attached to the outlet nozzle 29 shortly before use. Such needles, and their attachment to the outlet nozzle 29, are known per se, and the usual needles and cylindrical bodies are useful in implementing the present invention. As will become apparent later, the only adaptation required to conventional spraying parts is a coupling possibility to be fitted to the piston thereof for coupling to a vibration generator.
    In the cylindrical body 21, between the outlet end 25 and the piston 22, there is rinsing fluid 26. A rinsing fluid proven for this purpose is sodium hypochlorite, but other compositions are also conceivable.
    If a compressive force is exerted on the piston 22 in the direction of the needle 25, the piston 22 moves towards the needle 25, thereby squeezing flushing fluid 26 from the needle 25, so that a flushing jet (not shown) flows out of the needle 25 , as will be clear to an expert.
    At its free side facing away from the needle 25, the piston 22 is provided with a coupling member 27, which in this example is designed as a bore with an internal screw thread. Other embodiments will also be possible, as will be apparent to one skilled in the art; a bayonet coupling is mentioned here by way of example. A particularly favorable preferred embodiment is discussed later.
    c.
    The vibration part 30 comprises a housing 31 which at one end (in this example the right-hand end) is provided with a second coupling member 32 for coupling to the first coupling member 27 of the piston 22. In this example, that second coupling member 32 is designed as one of an external threaded pin, which can therefore be screwed into the piston 22.
    The shape of the housing 31 is not critical. However, for ease of operation, the housing 31 has, for example, an elongated, cylindrical shape, with a diameter of the order of about 2-5 cm. The length is preferably in the order of about 10-15 cm. During use, the user can then place his thumb on the rear wall 33 opposite the pin 32.
    The pin 32 is preferably substantially aligned with the body axis of the housing 31. This has the consequence that when the spray part 20 and the vibration part 30 are coupled to each other, these elongate parts are aligned with each other.
    A vibration motor 34 is mounted in the housing 31. The vibration motor is a relatively small motor, with dimensions. in the order of a few centimeters. The vibration motor can be designed as a motor with an eccentric weight mounted on the output shaft. In a suitable embodiment, use can be made of vibration motors as known for use in electric toothbrushes.
    Instead of a motor (i.e. a device with a rotating output shaft) use can be made of a vibration generator of a different type. By way of example, a vibration generator based on a piezo element is mentioned here, or a vibration generator based on a loudspeaker coil (linear vibration in an electric field).
    A battery 35 is also mounted in a battery chamber 39 of the housing 31, which provides electrical power to the vibration generator 34. The size of the battery (i.e. the type of the battery) is adapted to the voltage requirement of the vibration generator 34 and to the dimensions of the housing 31. The housing 31 may be provided with a removable cover or the like to be able to replace the battery 35 when it is empty, but this is not shown. Alternatively, it is possible that the battery 35 is a rechargeable battery, and that the housing is provided with an electrical connector for connecting an external charger, but that is not the case. displayed. Finally, it is possible that vibration part 30 is designed as a disposable part, which is discarded when the battery is empty. . "
    To energize the motor 34, a switch 36 is mounted in the housing 31 which can be operated by a user. For operating the switch 36, the housing has an opening 37 with a flexible sealing member 38 mounted therein, for example of rubber or silicone.
    For the sake of simplicity, the required electrical wiring is not shown in the housing 31. The functional relationship between the battery 35, the switch 36 and the motor 34 is shown only schematically, and therefore the switch 36 is drawn between the battery 35 and the motor 34, but it should be understood that this does not mean that the switch 36 also physically placed between the battery 35 and the motor 34.
    The operation is as follows. The dentist has a stock of several spray parts 20, individually packed in a hermetically sealed package for the sake of hygiene. When the dentist is engaged in, for example, a root canal treatment and he wants to flush that channel, he removes a syringe part 20 from its hermetic package and fixes the pin 32 of the vibration part 30 to the piston 22 of the syringe part 20. Furthermore, he brings the needle 25. To fill the cylinder 21, it presses the piston 22 to the rear of the cylinder 21, inserts the needle into a storage vessel with the flushing fluid to be used, and pulls the piston 22 toward the inlet end 23, fluid 26 passing through the needle 25 is sucked into the cylinder 21. It operates the switch 36 to turn on the motor 34.
    The motor generates a low frequency vibration of the vibration part 30, the frequency of which may, for example, be in the range of about 1 Hz to about 3000 Hz, although higher or lower frequencies are not excluded; in any case, the vibration is considerably less than ultrasonic. The generated vibration is transmitted via the pin 32 and the cooperating coupling members 28, 27 to the syringe part 20, which ultimately results in a vibration of the needle 25.
    The rinsing operation is now carried out in the usual manner. The needle 25 is placed in the root canal to be treated, and the dentist presses on the housing 31, whereby the piston 22 is pressed towards the needle 25 and a jet of rinsing fluid leaves the needle 25. Due to the generated vibration in the syringe part 20 and the needle 25, the flushing liquid jet will also vibrate, resulting in the desired improved cleaning effect.
    If desired, the above is repeated one or more times.
    After performing the flushing operation, the dentist can switch the motor 34 off again and remove the spray part 20 from the vibration part 30. The spray part 20 including the needle 25 can be discarded, the vibration part 30 can be used for several flushing operations.
    Figure 2 schematically shows a perspective view of a preferred embodiment of the flushing instrument, generally indicated by the reference numeral 100.
    In this preferred embodiment, the vibration part, indicated by reference numeral 130, is designed as an elongated cylindrical housing part 101 with a molded ring part 102 on its rear side, which is suitable for a dentist to pierce his thumb. At the front of the ring 102, where the ring 102 perishes in the housing part 101, the ring 102 is provided on its inside with a pressure switch 103, which operates the motor (not shown). This combines the important advantages that the dentist has a good grip on the flushing instrument and that the motor is operated automatically when the dentist exerts sufficient pressure on the vibration part 130, and thus on the pressure switch 103, around the piston 22 to the needle 25.
    A rechargeable battery is preferably included in the vibration part 130. It is possible per se to use a "normal" battery, but it is seen as a drawback that it is then necessary to regularly open the vibration part 130 to replace the battery. Even with a rechargeable battery you can choose to exchange it when it is empty, but preferably use remote charging. To this end, the vibration part 130 is preferably provided with a receiving coil for electromagnetic energy, and the ring 102 offers the advantage that it is eminently suitable for accommodating the receiving coil. Since the remote charging of rechargeable batteries by means of a transmitting coil and receiving coil is known per se, this need not be further explained.
    Figure 3 is a schematic perspective view of the vibration part 130, taken from the cylinder 21. A metal sleeve 111 is preferably provided around the front part 110 of the cylindrical housing part 101, which is pressed into the cylinder 21 during use. At the free front end of the cylindrical housing part 101, a coupling part 120 is provided, which will be described later.
    For charging the rechargeable battery in the vibration part 130, the present invention proposes a docking station 200, Figure 4A of which shows a schematic perspective view. Figure 4B shows a similar one. perspective view, now arranged with the vibration part 130. In this embodiment, the docking station 200 generally has a rectangular shape, with an upper surface 205, in which an elongated recess 201 is formed for receiving the cylindrical housing part 101. At one end, the elongated recess 201 connects to a circular recess 202 for receiving the ring 102. Centrally within that circular recess 202, the docking station 200 has a table mountain 203 projecting above the upper surface 205, within which there is a transmitting coil (not shown) for electromagnetic energy transfer. A connection for the electronics within the docking station 200 is indicated at 204. A good electromagnetic coupling is achieved by the design of the table mountain 203 which extends within the ring 102 and within which the transmitter coil is arranged.
    Figure 5 is a schematic perspective view showing details of a preferred structure for the coupling between the front part 110 of the cylindrical housing part 101 of the vibration part 130 and the piston 22 in the cylinder 21. In this preferred construction the piston 22 is on (of the needle 25 facing away from the rear provided with coupling members 150 which comprise a disc-shaped carrier 151 with gripping arms 152 which are arranged opposite one another along the circumference thereof and which extend substantially parallel to the longitudinal axis of the cylinder 21 and which are provided at their ends with inside oriented, barb-shaped or arrow-shaped protrusions 153. The number of gripping arms 152 is shown in the figure with variants A and B as being equal to 2, but this number can also be higher. The gripping arms can stand freely (variant Ä) or can be flanked by support members 154 (variant B). For cooperation with these coupling members 150, a coupling member 120 arranged at the end of the cylindrical housing part 101 is preferably in the form of an axial pin 121 with an inclined run-on surface 122 and an engagement edge 123, behind which the barb or arrow-shaped protrusions 153 of the gripping arms 152 can to engage.
    An advantage of this construction is that it is a relatively simple and inexpensive construction that makes it possible for the vibration part 130 to be coupled to the piston 22 by an axially directed pressure force (see detail C, where, for the sake of simplicity, the cylinder 21 has been omitted). During use, the piston 22 is held securely in and by the cylinder 21; it cannot vibrate. After use, the vibration part 130 with the piston 22 is pulled out of the cylinder 21. In the embodiment with two opposite gripping arms 152, wherein the inner surfaces 155 facing each other of said gripping arms 152 are mutually parallel surfaces, the piston 22 can then be easily detached from the coupling member 120 of the vibration part 130 by a parallel to those inner surfaces. 155 directed sliding movement, in detail C therefore perpendicular to the plane of the drawing.
    It is noted that piston 22 comprises a fitting 160 extending over the front surface of the piston, for example of rubber or silicone or an "other" suitable material, which is in contact with the flushing liquid and establishes a liquid seal with respect to the cylinder 21 This fitting 160 is attached to the disc-shaped carrier 151, as illustrated in detail C.
    In a preferred embodiment, in the front part 110 of the cylindrical housing part 101 of the vibration part 130, a lighting element 140 is arranged, typically an LED. This LED can be powered from the same battery that powers the motor, and can be switched ON / OFF simultaneously with the motor or via a separate switch (not shown). The lighting element can be arranged at any position in the front part 110 of the cylindrical housing part 101, but advantageously the LED is located at the end face 112 of the front part 110 of the cylindrical housing part 101, as shown in figure 4B and figure 5 for detail A. To that end a bore can be provided in that end face 112, into which the LED fits; if desired, a transparent cover plate may be provided over the LED (not shown).
    The lighting element 140 provides the dentist with extra light in the patient's mouth, so that he can clearly see where he is placing the needle. Furthermore, the lighting element 140 provides a relief of the liquid level in the (transparent) cylinder 21, so that the dentist can clearly see how far he has pressed the piston 22 into the cylinder 21. It is advantageous if the body of the piston 22, in particular the disc-shaped carrier 151 and the fitting 160, are made of a transparent material.
    It will be clear to a person skilled in the art that the invention is not limited to the exemplary embodiments discussed above, but that various variants and modifications are possible within the scope of the invention as defined in the appended claims.
    For example, it is possible that a vibrating liquid jet is used for a reason other than rinsing a root canal. It is also possible that the instrument with the vibrating needle is intended to be used to perform injections.
    权利要求:
    Claims (17)
    [1]
    Vibration part (30) of an instrument (1) comprising a hollow cylindrical body (21) with an output nozzle (29) and a syringe needle (25) mounted thereon, and a piston (22) displaceable in said cylindrical body (21) , comprising: a housing (31) provided at one end with a coupling member (32) for coupling to said piston; a vibration generator (34) mounted in the housing; a battery chamber (39) for receiving a battery (35) that provides electrical power to the vibration generator (34); a switch-mounted user-operated switch (36) for energizing the vibration generator (34).
    [2]
    Vibration part according to claim 1, wherein the coupling member (32) is designed as a pin that fits into the cylindrical body (21).
    [3]
    The vibration part of any one of claims 1-2, wherein the vibration generator (34) comprises a vibration motor.
    [4]
    4. Vibration part according to any of claims 1-3, further provided with one or more of the following features a] to j]: a] the coupling member (32) is provided with a screw thread; * b] the vibration generator (34) comprises a piezo element; c] the vibration generator (34) includes a speaker coil; d] the housing (31) is provided with a removable cover or the like to replace the battery (35); e] the housing (31) is provided with an electrical connector for connecting an external charger; f] the housing (31) is designed as a disposable part that is discarded when the battery is empty; g] the housing (31) has an elongated, cylindrical shape; h] the housing (31) has a diameter of the order of about 1-5 cm; i] the housing (31) has a length in the order of about 10-15 cm; The housing (31) has an opening (37) at the level of the switch (36), with a flexible sealing member (38) mounted therein, to enable operation of the switch.
    [5]
    Vibration part (130) of an instrument (100) comprising a hollow cylindrical body (21) with an output nozzle (29) and a syringe needle (25) mounted thereon, and a piston (22) movable in said cylindrical body (21) ), which vibration part comprises: an elongated cylindrical housing part (101) fitting into said body (21) with a molded ring part (102) on its rear side, wherein the housing part (101) 'faces away from the ring part (102) 'end is provided with a coupling part (120) for coupling with said piston (22); a vibration generator (34) mounted in the housing part (101); a battery chamber (39) in the housing part (101) for receiving a battery (35) that provides electrical power to the vibration generator (34); a user-operated switch (103) located at the inner front of the ring (102) for energizing the vibration generator (34).
    [6]
    The vibration part of claim 5, wherein the vibration generator (34) comprises a vibration motor, preferably a motor with an eccentric weight on the output shaft.
    [7]
    The vibrating part according to claim 5 or 6, further comprising an electric charging circuit for charging a rechargeable battery included in the housing part (101), which charging circuit comprises a receiving coil for wirelessly receiving electromagnetic energy, the receiving coil being included in the ring (102).
    [8]
    Vibration part according to any of the preceding claims 5-7, wherein the piston (22) is provided on its side remote from the needle (25) with coupling members (150) comprising a disc-shaped carrier (151) with its circumference gripping arms (152) arranged opposite each other and provided at their ends with inwardly directed, barb-shaped or arrow-shaped protrusions (153); and wherein the coupling part (120) is in the form of an axial pin (121) with an inclined run-on surface (122) and an engaging edge 123, behind which the barb or arrow-shaped protrusions (153) of the gripping arms (152) can engage.
    [9]
    - 9. " Vibration part according to any of the preceding claims 5-8, wherein a lighting element (140) is included in the cylindrical housing part (101), preferably at an end face (112) of the cylindrical housing part (101).
    [10]
    A docking station (200) for charging a battery of a vibration part by wireless transmission of electromagnetic energy according to claim 7, comprising a table mountain (203) standing up from an upper surface (205) and fitting into the ring (102), within which there is a coil for electromagnetic energy transfer; the docking station preferably further comprising an elongate recess (201) formed in the upper surface (205) for receiving the cylindrical housing part (101) and a circular recess (202) extending around said table mountain (203) for receiving the ring (102) has ..
    [11]
    A syringe part (20) of an instrument (1), comprising: a hollow cylindrical body (21) with an input end (23) and an output nozzle (29) for mounting a syringe needle (25) thereon; an axially displaceable piston (22) disposed in the interior of the body (21) and provided on its free side facing away from the outlet nozzle (29) with a coupling member (27; 150) for coupling to a vibration part ( 30) according to any of claims 1-9.
    [12]
    The syringe member of claim 11, wherein the body (21) adjacent the entrance end (23) is provided with outwardly projecting wings or flange (24).
    [13]
    A syringe member according to claim 11 or 12, wherein the coupling member (150) comprises a disc-shaped carrier (151) with gripping arms (152) arranged opposite each other along the circumference thereof, which at their ends are provided with inward-facing, barb-shaped or arrow-shaped protrusions (153), wherein the number of gripping arms (152) is preferably equal to 2, wherein the facing inner surfaces (155) of said gripping arms (152) are preferably mutually parallel planes.
    [14]
    The syringe member of claim 13, wherein the disc-shaped carrier (151) is made of a transparent material; wherein the carrier is provided with a fitting (160) which establishes a liquid seal with respect to the cylinder (21), which fitting (160) is preferably also made of a transparent material.
    [15]
    Instrument (1; 100), comprising a vibration part (30; 130) according to any of claims 1-9 and a spray part (20) according to any of claims 11-14, with a syringe needle mounted on the output nozzle (29) (25).
    [16]
    An instrument system comprising a vibration part (30; 130. according to any of claims 1-9 as well as a plurality of syringe parts (20) according to any of claims 11-14 and a plurality of syringe needles (25) attachable to the syringe parts (20) ).
    [17]
    A method for providing a vibrating liquid jet, comprising the steps of: providing a syringe member (20) according to any of claims 11-14; attaching the syringe needle (25) to the body (21); providing a vibration part (130) according to any of claims 5-9; coupling the spray part (20) together. and the vibration part (130); applying pressure to the inner front of the ring (102) of the vibration part (130) to turn on the vibration generator (34) and to push the piston (22) towards the direction of the syringe needle (25) .
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2008000050|2008-02-20|
    NL1035050|2008-02-20|
    NL1035050A|NL1035050C1|2007-02-21|2008-02-20|Medical dental rinsing instrument comprises vibration part, injection part, which can be coupled together|
    PCT/NL2008/000050|WO2008103030A1|2007-02-21|2008-02-20|Medical-dental instruments|
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