• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    The invention proposed here relates to handheld devices (1) for removing detachable dental devices from the oral cavity, having a fist-wide grip part (11), a two-sided auxiliary lever (20) which can be rotated immediately outside the grip part about an axis perpendicular to the rod axis (14) and a support element (30,35,37) at its distal end (13) for supporting the handset on the respective dental device or an underlying post (tooth, tooth rest or implant (60)). Furthermore, the present invention relates to systems consisting of a detachable dental device and a hand-held device according to the invention and possibly a lying below the device posts.
    公开号:AT519506A1
    申请号:T583/2016
    申请日:2016-12-22
    公开日:2018-07-15
    发明作者:Ing Dr Ekkehard Kubasta Dipl
    申请人:Ing Dr Ekkehard Kubasta Dipl；
    IPC主号:
    专利说明:

    description
    User-oriented hand-held device for removing detachable dental devices and systems for its use
    The technical scope of the subject invention includes all dental equipment in the oral cavity, which must be removed regularly for the purpose of daily care or other needs and then used again. Essentially, these are with respect to upper and / or lower jaw releasably mounted on the edentulous palate complete dentures, on teeth, stumps and / or jaw implants attached but detachable full and partial dentures, and releasable bridges. Furthermore, these are closely adapted to the teeth tooth rails for correct Zahnpositionierungen (Aligner), crunchy / Aufbißschienen, and bleaching and tooth protection devices in the sports sector, provided that they have sufficient material rigidity. Also in question are devices used in the oral cavity which are used in the treatment of disorders such as sleep apnea, snoring and temporomandibular joint dysfunction, provided that they require an exact and immovable fit on the teeth.
    Background of the invention
    The basic problem with the personal use of the aforementioned dental facilities is that the requirement for a solid anchoring as possible for a good biting and chewing capacity diametrically opposed the desire for easy and easy solubility, especially by the personal user. Obviously, from the medical side for routine removal even of modern push-button fasteners attached to implants dentures still assigned their own fingers as a tool, so that from the perspective of physicians of the relevant prior art seems to be zero. Worrying in this context is the fact that the technically possible restraint forces between dental prosthesis and jaw are deliberately reduced for already frail people, so to speak as a bonus for the already given impairment. The technology would be in demand.
    State of the art
    It is sometimes discussed in great detail in the prior art (e.g., EP 1 920 728 A2 of 2008) that the fingers can not be a desirable tool for removal of the oral cavity releasably mounted dental devices.
    Without technical assistance, there is a risk that, as a result of the inconvenience associated with the dissolution, the cleaning and care is restricted, resorted to dangerous aids, even professionals are tempted to hand on the patient with unsuitable dental tools with injury potential.
    The separation aids according to the invention previously proposed in patent documents are based essentially on rod-like tools with a handle and a working head with hook-like end or even a working surface for application to the edge of the dental facility to deduct this with a tensile force of the arm of the jaw and / or with a moment from the wrist to tip off the jaw.
    Although these separation aids meet the essential essential requirement for the transfer of manipulation to the outside, the transmission of the dissolving forces takes place only in a loose connection between the tool and the edge of the dental prosthetic element to be released, so that in the descriptions often summoned simplicity, comfort and above all safety of handling for an inexperienced user let alone a helper seems hardly comprehensible.
    An exception is the original design of a device for releasing a maxillary denture according to US 8,475,166 Bl (2.7.2013, M. LaMee), in which the release force is applied by mouth opening of the masticatory muscle. For the special case of a maxillary denture, a safe and injury-free operation without the use of the fingers should actually be guaranteed here.
    With regard to the implementation of patents in daily practice, after all, a tool for removing splints can be purchased in online commerce, which according to the US-patent US 20090258323 Al / 2009, most recently published under US 8545219 B2 (1.10.2013) , is constructed.
    As a final point of criticism of the prior art it should be noted that when using any of the known devices required for solving the dental equipment separation force must be applied entirely by the user, and possibly after successful solution, the device remains loose in the oral cavity and with their own / foreign fingers must be fished out of there.
    In summary, the state of the art regarding the removal of detachable dental appliances installed in the oral cavity can only be regarded as partially helpful, the practical implementation of which obviously being not entirely unfounded, or at least not being rejected by the professional side, in view of the previous technical solution proposals is encouraged.
    The subject invention is compared to the prior art, a completely new constructive approach to reason, and it provides the previously abandoned users of such facilities but also any helpers a simple and effective handset for everyday use.
    The technical problem of the subject invention for removing detachable dental equipment in the oral cavity is characterized by the following in the prior art not perceived criteria for their application: 1. During the application of force required for the release of the dental device to be solved by the hand device according to the invention is frictionally taken and remains even after the separation process of this at least clasped and can then be removed with this also comfortable and safe from the oral cavity; 2. This non-positive rigid connection between the handset and dental equipment during the release process allows a simple, safe and self-guiding or self-adjusting operation outside the oral cavity with one hand, even for a helping foreign person; 3. in the application of the hand-held device according to the invention this does not come into contact with the gums, so in this respect injuries are ruled out; 4. the previously common motion pressure in the sudden release of the device to be dissolved is suppressed or at least largely mitigated, thus eliminating the previously associated hazards and stress-strained moments; 5. the ratio of the force to be applied by the user to the actual force required to separate the dental device from its anchoring in the jaw is reduced to about one-tenth, making the handling of the device much easier and safer and more comfortable; 6. The subjectively perceived as highly unpleasant tensile forces on the anchor elements (implants, tooth residues, teeth) in the detachment process are eliminated or at least defused.
    The solution according to the invention of said technical problems, which is proposed in the invention claimed herein for the removal of teeth, dental remains, implants or fixed only on the naked palate dental devices in the oral cavity, is achieved by the characterizing features of claim 1, which in essentially based on the design concept of a one-sided lever. Further necessary and advantageous embodiments are proposed according to the subclaims.
    According to the invention a hand-held device with a rod-shaped base body is provided at the proximal end of an approximately fist-wide handle portion for guiding the handset and for applying the operating forces, just outside the distal end about a perpendicular to the rod main axis rotatably mounted auxiliary lever for coupling the load according to the restraining forces the dental device, as well as having a distal end part, which serves to support the handset, wherein the support is carried out on the to-be-removed dental device itself or on an underlying post (tooth, tooth rest or implant).
    The characterizing technical features of the auxiliary lever are held in claim 2 by the auxiliary lever is designed as a double lever, wherein on a pointing towards the distal end leg a hook for receiving the release forces to overcome the retention forces of the respective dental device is formed, and its second Leg is located beyond the axis of rotation and points in the direction of the handle part and is pivotable with finger pressure of the handle hand.
    In the claims 3-5 three technical design variants for supporting the distal end portion of the hand-held device according to the invention on the dental device to be solved are characterized, which is essential for the extent of all
    Force savings on the part of the user when releasing the dental device are, but also determine the breadth of the technical field of application.
    In claim 6, the necessary system-specific adaptations to be dissolved in the dental device, in the claims 7-9, the systems and the method of use characterized by the interaction of the individual technical features of claims 1-5 is enabled and the required and far be solved beyond the prior art technical problems.
    In claim 10, a number of design measures are characterized to ensure a smooth or improved handling of the handset according to the invention.
    With regard to the listed in the technical problems points 1 and 2, the handling is characterized by the technical features of claim 2 for the auxiliary lever by tweaking by manipulating the Zwickschenkels with the thumb or forefinger of the handle hand to be solved device between the hook leg and distal end portion, thus also frictionally taken and fixed after the release process on the handset.
    That the handset according to the invention according to item 3 of the tasks can be handled without touching the gum, is ensured by the characterizing features for the hook lever according to claim 2, as well as for the hooking device on the dental device according to claim 6. The technical features of claims 3 and 4 with direct support of the hand-held device on the dental device allow a universal application of the handset according to the invention for the entire field of application, require only the simplest adaptation measures on the prosthesis body and allow easy guidance a very rigid connection between the handset and the device and Thus, a very individual, adaptable to the personal sensibility of the user design of the operating forces, which are the points 4 and 6 of the tasks, which are elimination of the motion of the detachment and detachment as unpleasant tensile forces on the implants, are essentially meet.
    With regard to point 5 of the technical tasks, the force reduction is in the range of two-thirds.
    On the other hand, the technical features underlying claim 5 with a support of the hand-held device according to the invention on a lying under the dental device to be solved post (tooth, dental rest or implant) and the corresponding adaptation of the device according to claim 6 ensure compliance with the technical requirements in full To emphasize the force reduction of up to nine tenths.
    List of drawings:
    Fig. 1 construction sketch of the invention
    Hand device according to claims 1, 2 and 3 a - view of the rod-shaped base body with handle part, slot for auxiliary lever, etc. and distal end part b - supervision of the clamping element c - cross section of the body according to section AB, with auxiliary lever, return spring and clamping element
    Fig. 2 construction sketch of the invention
    Hand device according to claims 1, 2 and 4 a - view of the rod-shaped body with handle part, slot for auxiliary lever, etc. and distal end part b - supervision of the support c - cross section of the body according to section CD, with auxiliary lever, return spring and support element
    Fig. 3 construction sketch of the invention
    Hand tool according to claims 1, 2 and 5 - cross section of the body according to section CD, with auxiliary lever, return spring and support lever
    4 system-specific adaptation requirements for the dental device using the example of an implant-supported prosthesis - hooks for the auxiliary lever hook - hole and guide aids for the support lever a - Example of modification of the engagement surfaces (44) and (23) between hooking device (41) and hooks ( 21) for reducing the local material load and the representation of a slight toothing Fig. 5 Cross-sectional sketch of the complete handset with auxiliary lever and support element according to the claims 1 to 3 in the hooked state with a lower jaw full denture.
    Fig. 6 is a cross-sectional sketch of the handset according to claims 1,2 and 4 in the hooked state with a maxillary denture
    FIG. 7 Demonstration of the mechanisms of action in relation to the fulfillment of the technical tasks using the example of an implant-supported mandibular prosthesis. A Handpiece supported on the implant by means of a support lever. Hooked hook of the auxiliary lever into a hooking groove and beginning of the release procedure. Removal of the detached prosthesis from the mouth
    Detailed description like. drawing
    The constructive statements outlined in the figures regarding design, implementation of technical requirements, etc. are only to be understood as exemplary. Essential details required for the fulfillment of the technical task are marked accordingly, geometrical details are largely excluded, since each dental device has its own geometry and therefore the hand-held devices must be adapted in various details before use.
    Representations of complete hand-held devices are shown in FIGS. 1c, 2c and 3, which are based on the three variants proposed in claims 3, 4 and 5 for the design of the support part (30, 35, 37).
    In connection with FIGS. 1 a, 2 a and 3, the rod-shaped base body (10) with a handle part (11), a slot (12) as an effective design variant for receiving elements that can be rotated about an axis and can be mounted in a fixed manner initially arise as common elements a transverse bore (14) for receiving the axis of rotation of an auxiliary lever (20), and the auxiliary lever itself with a mounted on the same axis of rotation return spring (26) according to claim 10.
    This two-sided auxiliary lever (20) characterizes the functional properties of the hand-held device. Its essential technical features are a hook leg (21) pointing in the direction of the distal end with a hook (22) at the end with a hook support surface and corresponding hook width (23), as well as a pincer leg opposite the axis of rotation (14) and pointing in the direction of the proximal end (FIG. 24) with a stop (25) on the handle part (11).
    With the help of the restoring spring (26) the Zwickschenkel (24) without the influence of other external forces spring-loaded against the stop (25) pressed into a normal position, in Figs. Lc, 2c and 3 with a by means of a washer on the axis of rotation (14). centered coil spring constructively implemented, wherein the inner spring arm (27) at its free end bent perpendicular outside of the centering in Zwickschenkel (24), the outer spring arm (28) is supported in a differentiated manner on the distal end portion (13).
    The said basic position is as indicated in claim 10, characterized in that the hook leg (21) extends beyond the distal end imaginary rod axis of the body an angle of preferably 45-75 degrees, so that together with the technical feature of the spring load of the hook leg the Handling of the handset until its hooking in the hooking device is significantly supported.
    Fig. 1 outlines a handset according to claims 1-3. Characteristic feature of the long rod-like end portion (13) as a support arm (35), which extends over the Einhakstelle said hook lever nearest tooth crown portion of the Einhakstelle said hook lever portion of the releasable dental device across the mouth to the opposite row of teeth and there during the release process with his supports free end.
    To ensure that the detached dental part does not separate from the handset, a clamping element (36) with a recess for the dental crowns is additionally mounted as a technical feature in the distal end portion (13). In the Fig. Lb and lc basic and elevation of the clamping element are shown. This is at the distal end portion (13) displaceable and fixable by means of the fixing screw (15), whereby the necessary adjustment is made possible even at different heights of the dental device, that after the release process the tooth crowns in the region of the clamping element (36) in engagement with the Are handheld device.
    In addition, in the Fig. Lb and 1c technical features shown in claim 10, z. B. are an exchangeable trained hook leg (21) of sufficiently rigid metal wire, which allows adaptation to the height and contour of the dental device in the hooking. As the handling-supporting features, a slip-resistant rubber pad (72) may be provided at the free end of the support lever (35) to secure the support on the dental crowns against lateral displacement. A broadening (70) of the handle part (11) can be used for targeted metering of the operating forces, in particular with respect to moments about the rod axis of the main body (10). Grip frame (71,74) on the handle part and the Zwickschenkel (24) can be provided for the purpose of grip securing thumb and forefinger of the handle hand.
    Fig. 5 shows an example of the outlined in Fig. 1 handset in engagement with an implant-supported lower jaw prosthesis in the application of the release forces.
    Fig. 2 outlines a handset according to claims 1, 2 and 4, wherein the distal end portion is shortened and the clamping element (36) is replaced by a support element (37). This has according to plan and elevation in Figs. 2b and 2c a transverse groove (38) for supporting the Einhakstelle nearest dental crowns with a slightly arcuate milled deeper keyway and a superimposed shallower trapezoidal transverse groove for receiving a front tooth and / or molar crown section to releasing dental device.
    The transverse groove (38) could be structurally also incorporated directly into the distal end (13) of the base body (10), however, it is in view of the applicability of the handset expedient to provide the support element (37) interchangeable, with support elements with different geometric design of the transverse groove an adaptation to the very individual sizes and shapes of eligible dental technology
    Facilities allow. The option of interchangeability also applies to the clamping element (36) of FIG.
    As the handling-supporting features according to claim 10, the handle widening (70) and handle frame (71,73) are shown in Fig. 2a and 2c, and a shock-absorbing rubber pad (74) on the distal end portion (13) of the base body (10) to mitigate the all due blow of the end of the handset against the opposing crowns in a jerky solution of the dental device.
    Fig. 6 shows this handset in engagement with a maxillary denture immediately prior to the release operation.
    3, a complete hand-held device according to claims 1, 2 and 5 is shown in sketchy form, with the support element (36) at the distal end (13) being supported by a pivotally mounted support lever (30) as an essential technical feature compared to FIG. is replaced. Whose bearing body (31) has a stop (33) at the distal end portion (13), and by the interaction of the bearing surface (34) on the bearing body with the outer spring arm (28) of the prestressed return spring (26) of the support lever (30) in one Basic position held. In this bearing body (31) of the support lever (30) a pin-shaped end portion (32) made of spring-hard stainless steel is used, the free end for the release process through a hole in the dental device to be solved on an underlying post such as tooth, tooth rest or implant supported (Fig. 4,7a). For the said basic position of the support lever (30) an approximately parallel alignment to the hook leg (21) is proposed, in which case in the basic positions of the auxiliary lever (20) and support lever (30), the distance of the hook (22) from the free end of the support lever (32 ) expediently corresponds at most to a maximum assumed tooth crown width in order to facilitate targeted threading with respect to the tooth crowns of the dental device (FIG. 3).
    In FIG. 4, the system-specific adaptations according to claim 6 necessary for the application of the hand devices according to the invention are shown by way of example by means of a sectional drawing by an implant-supported prosthesis body (40) and the underlying jaw (50) with implant (60) ,
    First, a hooking device in the outer wall or at the edge of the outer wall of the dental device to be solved is basically required for all handsets to hook there the auxiliary lever (20) with its hook (22) and in consequence the necessary forces to overcome the restraining forces to be able to apply between the device and the jaw. Three possibilities are shown in Fig. 4, in the outer prosthesis wall a Einhakkerbe (42) or Einhakbügel (43), or in the edge of the prosthesis wall Einhakrille (41) as a notch perpendicular to the course of the edge. The width of the interaction zone between the hook and hooking device is expediently about twice the value of the hook width of preferably 2-3 mm in order to facilitate finding the point of engagement. The more complex variants (42) and (43) have the advantage of precluding a priori contact between hooks (22) and gums (51) and thus guaranteeing freedom from injury. However, this can also be achieved with the simplest Einhakrille (41) to be produced. It only needs to be provided that the hook width (23) does not exceed the wall thickness of the device on the groove bottom (44), so that the hook (22) can not touch the underlying gum (51) (Fig. 5,6,7b).
    Regarding the local mechanical stress of the material of the dental facility and the hook in the area of
    Hooking device can not be excluded during the release process because of changing angular relationships between hook legs and the contour of the outer wall of the device high local material stresses. To avoid overstress caused in this way, it is proposed that the support surface of the hook (22) in the region of the hook width (23) is concave and the interaction surface of the hooking devices (41, 42) with the hook in the groove bottom (44) (FIG the upper wall of Einhakkerbe (42) to make convex. Side effect is an advantageous gearing effect between hook and hooking device. For a hand-held device according to claims 1, 2 and 5 with support on a post, a further system-related adaptation is to be provided on the hereby suitable dental devices with respect to the support lever (30), as shown by the example of an implant-supported device in FIG. After selecting the most suitable for a support of the handpiece implant (60) (geometric position, residual wall thickness of the prosthesis body over the die (63)) - starting from the center of the associated retention insert (64) in the prosthesis (40) and with a drilling direction in Direction of the nearest tooth root on the inside of the mouth - the retention insert, the matrix (63) enveloping it and the prosthesis body pierced (45). The hole exit can be slightly countersunk (46), and optionally starting from the countersinking edge, a guide groove (47) can be milled in the direction of the tooth crown. Both measures facilitate the search of the tip of the support lever (32) after the hole entrance (45) and are also applicable to the other post-supported dental facilities.
    With regard to the support point of the hand-held device on the underlying implant, ideal conditions are present (FIG. 4). When the free end of the support lever (32) is inserted into the borehole (45) in the prosthesis, the path terminates in the male (61) screwed on the implant (60), which has a recess (62) in its head special tool key for tightening the male in the implant can be used. The tip of the support lever is therefore accurately and safely supported in this recess.
    The sketches of FIG. 7 illustrate the system-specific functions and action mechanisms of the technical features characterizing the invention according to the claims 1, 2, 5, 6, 9 and 10 with the example of an implant-supported lower jaw prosthesis, with which the fulfillment of the technical problems is made possible to the full extent ,
    In the first application step with the threading of the hook lever (21) between the lip and dental crowns and the search for the support point with the pin-shaped end portion of the support lever (32) by means of the return spring (26) forced spring-loaded respective basic positions of auxiliary lever (20) and support lever (30) are crucial for easy and safe handling. The defined opening width of the lever ends (22) and (32) aids in threading and the spring loading of the levers prevents their unintentional evasion into undefined positions upon contact with the lip or prosthesis body. By the spring load of the support lever (30) of this in the subsequent search for the passage bore (45) with a slight contact pressure sliding along the inner tooth feet along, in which case the finding of the countersink (46) and / or the guide groove (47) immediately is perceived via the sense of touch of the fingertips of the serving hand. If the guide aids are recognized, the pin-shaped end portion of the support lever (32) can be easily passed through the passage bore (45) of the prosthesis body to the support point in the male (61,62), wherein the impact of the support lever tip can be perceived by a slight metallic shock. The final situation after these first application steps is shown in FIG. 7a.
    At this time, depending on the given geometric dimensions of the prosthesis and the lever, the device is still in the basic position with some distance of the hook (22) of the hook leg (21) from the contour (48) of the prosthesis wall. However, as shown in FIG. 7a, the hook (22) can already be spring-loaded against the prosthesis outer wall above the hooking groove (41), whereby the pinch leg (24) has already slightly lifted away from the stop (25) (small black arrow).
    If the support lever tip (32) on the underlying implant (60) pivots downwards on the handle (11) in the direction of the jaw, the spring-loaded hook (22) slides against the contour (48) of the prosthesis wall (22) of the hook leg (21) forced in the direction Einhakrille (41) until it snaps into place with a hearing or perceptible click, which inevitably has the Zwickschenkel (24) has already removed significantly from the handle part. (Fig. 7b, black arrows for running movements).
    Due to the pivotal movement of the handle part of the set in the normal position preferably 45-75 degrees angle between the hook leg (21) or support lever (30) and the extended imaginary rod axis of the body (10) increases in the direction of 90 degrees, that is, the handle part protrudes in good handling starting position for the next application step approximately perpendicular to the face out of the mouth.
    Up to here, the operation of the handset takes place almost without effort against the restoring force of the return spring (26) and guided by the lever geometries of the supported on the prosthesis handset only from the handle part (11) (Fig. 7a, 7b). The cited technical features cause a simple, safe and controlled guidance of the handset.
    In the next application step, the tweaking function of the auxiliary lever (20) now comes to the fore during the actual detachment attempt of the prosthesis and causes a jump in quality with regard to the handling of all proposed handheld devices (1) in comparison to the prior art (see also FIGS. 5 and 6). , After the hook (22) has been hooked into the corresponding anchoring element (41), the thumb (upper jaw prosthesis, Fig. 6) or index finger (lower jaw prosthesis, Fig. 5, 7b) of the grip part (11 ) holding the hand Zwickschenkel (24) of the auxiliary lever (20) against the handle, on the one hand the hook leg (21) pressed against the contour (48) of the prosthesis wall and thus secures the entanglement in the Einhakvorrichtung, on the other hand, the whole prosthesis to be solved ( 40) of the support lever (30) and hooked legs (21) - exactly the system prosthesis jaw / head (Fig. 7b, small block arrows for the Zwickkraft Z Zwickschenkel and handle part), since the prosthesis with the implant in the jaw still firm connected is. The resulting frictional connection causes a rigid connection between the hand-held device and the prosthesis / jaw and is perceived subjectively in the head immediately with the positive feeling of having everything "under control".
    However, this feeling of "in-grip" is particularly important in the operation of the hand-held device according to the invention by helpers of immense importance, since any care regarding a dangerous slippage of the tool is unnecessary for both parties and the dissolution process can therefore be completely stress-free.
    For the actual release process Z is attempted between the index finger and thumb upright Zwickkraft, turn away the handset on the handle (11) of the detected prosthesis in the direction opposite jaw. The loosening forces L build up (FIG. 7b, large block arrow), until finally the retention forces are exceeded and the prosthesis comes off abruptly. In contrast to the prior art, the operation is completely controlled even with this collapse of the external forces, since the support lever is always supported in the recess of the male part (62) and much smaller release forces were applied.
    The Zwickschenkel (24) loaded with the finger Z is forced back immediately after the release process by the loss of resistance from the burdening finger to stop (25) in the basic position (Fig. 3) and the opposite hook leg (21) pushes it with his hook (22) the detached and now on the support lever pin (32) threaded prosthesis (40) direction supporting lever bearings. The prosthesis remains but of the hook leg (21) and the spring-loaded support lever (30), so that it can be easily removed with the handset (1) from the mouth (Fig. 7c).
    Due to the sketched in Fig. 3 geometric specifications is calculated purely according to the leverage a ratio of load arm to power arm of about 1/10, whereby the operator at the end of the handle is easily reduced to 10% of the actually required on the hook release force and comfortable best can be easily and easily dosed on the handle part (11) can be applied via a torque from the wrist. In this case, the entire handset with the distal end part is pressed almost automatically against the anchoring in the jaw (illustrated by the dashed block arrow on the support lever in Fig. 5b), which meets the natural safety needs of the user.
    The perceived as scary pulling on the implants during the dissolution process is no longer perceived. The main reason is the fact that at the end of the handset (1) in the bearing of the support lever (14) acting support force consisting of load minus
    Operating force, directly on the affected implant (60) is derived and there counteracts its retention force or overcompensated.
    The previous description of a hand-held device according to claims 1, 2 and 5 referred to the example of an implant-supported prosthesis. It can be taken over for the other devices fixed on teeth and tooth stumps, for which purpose only the support of the support lever (30) with the necessary perforation (45) of the device concerned and the hooking device are to be adapted.
    When it comes to tooth stumps patch but releasable part / full dentures, you will choose as a suitable tooth stump that has a surface segment with a surface as parallel to the tooth plane, so that the support is preferably perpendicular to the support lever. Starting from this segment, the puncture of the prosthesis body then takes place.
    In the case of devices placed on teeth (tooth rails, etc.), the front molars offer one of their depressions in the occlusal surface in order to be able to securely support the support lever of the hand-held device. The perforation takes place again at the point to be assigned to the support point. For these applications, the hooking device is to be adapted. The simplest solution is to attach the Einhakrille (41) in the edge of the device, which due to the possibly small wall thickness adjustments of the hook width (23) and also the width of the hook (22) are made.
    In summary, it should be noted that in the presence of posts with a handset according to claims 1,2 and 5, the technical problems can be met to 100%.
    After these explanations of the action mechanisms with reference to FIG. 7 for a hand device according to the invention with a support element according to claim 5, the differences with respect to a handset with a support element according to claims 3 and 4 are as follows (Figures 5 and 6).
    First of all, it should be emphasized that this covers the entire technical field of application, in particular facilities on edentulous pines.
    The handling steps until hooking of the hook lever in the prosthesis edge are similar, but it is certainly easier to support the support arm (35) with the clamping element (36) or the transverse groove (38) on the dental crowns (FIG. 1c and FIG. 5 or FIG 2c and 6), as the support lever (30) in the passage bore (45) to introduce (Fig. 3 and Fig. 7).
    The activation of the Zwickfunktion (Fig. 5, 6, Zwickkraft Z) causes here due to the engagement of the dental crowns in the clamping element (37) or in particular in the support in the transverse groove (38) a very rigid and non-positive connection of the handset with the dental Device also with respect to moments about the main axis of the base body (10), whereby by means of the wrist applied torques on the handle part (11) in all conceivable directions and supported by a wider handle (70) targeted influencing and optionally also reducing the separation force by lateral tilting of the denture is possible.
    With respect to the operator follows in support according to the claims 3 and 4, that the handset after the production of adhesion (Zwickfunktion) does not have its own pivot point as in the case of the support lever (30) (Fig. 3 and 7), but with the prosthesis to a single rigid body merges. When an operating force is applied to the grip part (11), the dental technical device is moved over an axis of rotation which is not exactly fixed in the region of the support of the support arm (35, see FIG.
    Fig. La) or the support member (37) opposite
    Tooth crowns tilted away (sketched in Fig. 5 with dashed block arrow for support force in the imaginary pivot point). Due to the geometric relationships outlined in FIG. 5, a ratio of load to force arm of the imaginary one-sided lever of approximately 0.4 can be estimated, that is to say the force savings are around 60%.
    An exception is the removal of a partial denture with a support element according to claim 4. Here there is no power savings because of the lack of load arm.
    Parts List I Handgerät 10 rod-shaped base body of (1) with II grip part at the proximal end 12 longitudinal slot for receiving rotary levers, support elements 13 distal end portion 14 bore / rotation axis of (20) 15 bore / fixing screw for (35) 16 bore / fixing bolt for (36 ) 17 bore / rotation axis of (30) 20 two-sided auxiliary lever 21 hook legs of (20) 22 hook 23 hook width, hook support surface 24 Zwickschenkel of (20) 25 stop of Zwickschenkels on the handle part (11) 26 return spring (spiral spring with centering)) 27,28 Spring leg of (26) 30 support lever 31 bearing body of (30) 32 pin-shaped end part of (30) with free end 33 stop of the bearing body (31) at the distal end (13) 34 bearing surface for spring leg (28) on the bearing body (31) 35 support arm 36 Clamping element for dental crowns on (35) 37 Supporting element on (13) 38 Transverse groove in (37) for support on dental crowns 40 (implant-supported) prosthesis body 41 Einhakrille 42 Einhakkerbe 43 Einhakbü 45 Drill hole in the groove base of (41) 45 Drill hole as passage for (32) 46 Countersink of the inner margin of (45) 47 Guide groove in tooth flank 48 External contour of the denture wall at the Einhakort 50 Jaw / Palate 51 Gum near the hook (22) 60 Implant with push-button connection, consisting of 61 male 62 recess in patrix head 63 female die glued in (40) 64 retention insert, snapped into (63) 70 widened grip (11) 71 grip frame on handle (11) 72 soft rubber support on support element ( 35) 73 Grip frame on (24) 74 shock-absorbing rubber pad on (13)
    权利要求:
    Claims (10)
    [1]
    1. User-oriented hand-held device (1) for removing detachable dental devices, characterized in that its rod-shaped base body (10) provides a preferably fist-wide handle portion (11) at the proximal end for applying the operating forces, at this base immediately outside the handle part to a rotatable auxiliary lever (20) is mounted perpendicular to the axis of the rod axis, on which the dissolving forces are built, and that further this body at its distal end (13) has a supporting element (30,35,37) for supporting the handset on the dental device or on an underlying post (tooth, tooth rest, implant (60)).
    [2]
    2. Hand tool according to claim 1, characterized in that the auxiliary lever (20) is designed as a two-sided lever, wherein the Zwickschenkel (24) referred to a lever arm in the direction of the proximal handle portion (11) and advantageously the thumb or forefinger of the handle hand is accessible, and its relative to the rotation axis (14) facing towards the distal end (13) second as a hook leg (21) designated lever arm at its free end in the direction of the support elements (30,35,37) facing, preferably 1-2 mm and preferably protruding perpendicular to the longitudinal axis of the hook leg hook (22).
    [3]
    3. Hand tool according to claims 1 and 2, characterized in that the base body (10) as an extended support arm (35) running distal end portion (13), which preferably bridges the row of teeth of an entire mandibular arch, and in that on the support arm (35) lying still in the pivoting region of the hook leg (21) lying in the direction of rod axis and preferably with a screw (15) fixable on the body clamping element (36) is arranged with a recess for receiving the in the region of the hooking (41,42,43) lying dental crowns ,
    [4]
    4. Hand tool according to claims 1 and 2, characterized in that at the distal end (13) still in the pivoting region of the hook leg (21) lying a support element (37) adapted with a tooth crown transverse groove (38) is provided.
    [5]
    5. Hand tool according to claims 1 and 2, characterized in that at the distal end (13) still in the pivoting region of the hook leg (21) lying a supporting element in the form of a pivotable support lever (30) is provided, whose in the base body (10) mounted rotary axis ( 17) is parallel to that (14) of the auxiliary lever (20).
    [6]
    6. system or arrangement comprising a handset according to claims 1-5 and a detachable dental device, characterized in that in the outer wall of the device a notch (42) incorporated or a bracket (43) is inserted, or at the edge of this Outside wall a transverse groove (41) with a least the hook width (23) corresponding wall thickness (44) is incorporated in the groove base, which are each provided as Einhakvorrichtung for the hook (22) of the hook leg (21), and optionally in an implant-supported dental device additionally formed from the center of a preferably selected retention insert (64) extending bore (45) to the oral cavity side overlying tooth root, or in the other post-supported dental facilities whose perforation at a preferably selected position on a post preferably perpendicular to the local post surface provided istr at the Release operation to support the handset via the support lever (30) through the hole of the dental device on the respective post.
    [7]
    7. System according to claim 6 consisting of a releasably mounted on teeth, tooth residues, implants or the naked palate dental device especially a partial or full denture or dentition, and a handset in particular according to claim 3, characterized in that for the release process of the hook (22 ) of the hook leg (21) of the auxiliary lever (20) of the hand-held device (1) can be hooked into the intended hooking device in the outer wall (42, 43) or on the edge of the outer wall (41) of the dental device to be detached, and the hand-held device at the distal end part ( 13) with the free end of the Abstützarmes (35) on the Einhakstelle opposite tooth crowns can be supported, and after the release process the detached dental device of hook lever (21) and clamping element (36) and thus fixed to the handset.
    [8]
    8. System according to claim 6 consisting of a releasably mounted on teeth, tooth residues, implants or the naked palate dental device and a handset in particular according to claim 4, characterized in that for the release operation of the hook (22) of the hook leg (21) of the auxiliary lever ( 20) of the hand-held device (1) can be hooked into the intended hooking device in the outer wall (42, 43) or the edge (41) of the outer wall of the dental device (40), and the hand-held device in the transverse groove (38) of the distal end part (38). 13) located supporting element (37) on the lying over the hooking tooth crown portion can be supported.
    [9]
    9. System according to claim 6 consisting of a releasably mounted on posts (tooth, tooth rest, implant) dental device, from one of these underlying pillars (implant 60), and a handset in particular according to claim 5, characterized in that for the attempt to solve the handset with the hook (22) of the hook leg (21) can be hooked into a hooking device in the outer wall (42, 43) or on the edge of the outer wall (41) of the dental device (40) and at the distal end (13) with the free end (32 ) of the support lever (30) serving as the support element can be introduced through a hole in the dental facility and can be supported on an underlying post (tooth, tooth rest, implant).
    [10]
    10. System according to any one of claims 6 to 9, characterized in that for improved and safer handling of the handset is further provided - a return spring (26), the auxiliary lever (20) with its Zwickschenkel (24) against a stop surface (25) on Handle part (11) and the support lever (30) with its bearing body (31) against a stop (33) at the distal end portion (13) spring-loaded in each case a basic position suppressed, wherein optionally - in the respective basic positions an angular position of the hook leg (21) the auxiliary lever and the pin-shaped end part (32) of the support lever with the rod end of the main body (10) extended beyond the distal end is given an angle of 45-75 degrees and the free end (32) of the support lever and the hook (22) of the Hook limbs apart at most corresponding to the expected maximum tooth crown width, and / or - a corresponding shape of the mutual engagement surfaces (23, 44) between hooks (22) and hooking means (41, 42) which reduces and / or provides for local material loading and / or interchangeability - replaceable clamping or support elements (36, 37) for adaptation to the individual Dimensions of the dental equipment, and / or - a replaceable and made of wire hook legs if necessary, in order to adapt to the individual dimensions and contours and / or retention forces of the dental facilities, and / or - a widened handle portion (70) with preferably twice the width than Height and preferably oval cross-section, and / or - various grip frames (71, 73) on the grip part (11) and / or on the pinch leg (24), and / or - a slip-resistant support (72) on the free end of the support arm (35) , and / or a shock absorbing rubber pad (74) at the distal end portion (13).
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    同族专利:
    公开号 | 公开日
    WO2018112485A3|2018-11-08|
    AT519506B1|2018-11-15|
    WO2018112485A2|2018-06-28|
    WO2018112485A4|2019-01-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4609353A|1985-05-31|1986-09-02|Kline Joseph M|Dental apparatus for removing crowns|
    US5833460A|1997-04-09|1998-11-10|Maeda; Ronald A.|Controlled force crown and bridge remover|
    JP2000116671A|1998-10-15|2000-04-25|Miyake Denshi Kogyo Kk|Prosthesis removing device|
    US3755902A|1972-07-31|1973-09-04|M Northcutt|Tool for removing an orthodontic onlay that has been cemented to the front surface of a tooth|
    JP3051075B2|1997-02-07|2000-06-12|有限会社パーム|Forceps capable of removing a mounted crown in a reusable manner and method of removing a crown|
    WO1999039651A2|1998-02-05|1999-08-12|Gittleman, Neal, B.|Separation tools for abutment window and method|
    AU2826301A|1999-11-26|2001-06-04|Udo Franz|Method and device for extracting teeth|
    DE202013004848U1|2013-05-25|2013-07-01|Lydia Tigges|Clamping sheet Holding device Tweezer type for fixing workpieces|CN109893261B|2019-04-08|2020-10-27|王娟|Metal dowel pin removing device for oral restoration department|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA583/2016A|AT519506B1|2016-12-22|2016-12-22|Hand-held device for removing detachable dental equipment and systems for its use|ATA583/2016A| AT519506B1|2016-12-22|2016-12-22|Hand-held device for removing detachable dental equipment and systems for its use|
    PCT/AT2017/000082| WO2018112485A2|2016-12-22|2017-12-22|User-oriented hand tool for removing detachable dental fixtures and systems for using the same|
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