• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Implant structure for cortical implantation, in particular for dental use, which comprises a drive head (1) and a long neck (2) so that the implant structure can reach the cortical bone. A special thread profile (5) is connected to the neck (2), which supports the joint function of the cortical bone and the adherent cancellous bone, i.e. can be screwed into both. A part of the thread profile (5) close to the neck has a compression section (4), the more distant part is a self-tapping section (3) and in between there is a combination section (7).
    公开号:CH715227A2
    申请号:CH00978/18
    申请日:2018-08-10
    公开日:2020-02-14
    发明作者:Gabor Barath
    申请人:Gabor Barath；
    IPC主号:
    专利说明:

    Description The subject matter of the patent is an implant structure mainly for implantation into the cortex and comprises a drive head and a neck.
    There are dental implants with a long neck and self-tapping thread structures that are implanted directly into the hard cortex of the jaw. However, the existing thread-like structures have disadvantages. The drive head is connected by a long neck to the short threaded part implanted in the cortex. Due to the strong leverage, the biting force can easily loosen the structure and no longer fix the denture.
    Known shorter neck implants are implanted in the cancellous cancellous bone that adheres to the cortex and do not reach the cortical bone region. The cancellous bone is often damaged during tooth extraction, so most implants cannot be implanted immediately, but only after regeneration, which takes several months in two phases. To reduce the regeneration time, dentists use bone replacements.
    The international document WO 2012 069 178 A1 explains, as one of the earlier inventions, a solution in which a conical bore on a conical head fixes the implant in the bone.
    The Czech utility model protection, number CZ 31 297 U1 describes a conical implant with a compression screw that has a short, bendable neck.
    European patent EP 1 839 617 A1 shows a neck portion with a smaller profile with a bending zone which enables the screw implant to bend along the predetermined bending lines.
    Russian patent document RU 2 651 052 presents an implant made from a ceramic structure to shorten the time of the prosthesis by using a biomechanically compatible implant design.
    The Swiss document CH 695 234 A5 describes a system in which the compression thread stabilizes the implant during implantation. The European document number EP 0 320 740 A2 introduces a similar thread, but the screw implant is intended for a jaw bone.
    The Czech utility model protection, number CZ 30 490 U1 A gives details of the self-tapping dental implant with a replacement head for height modification.
    The international patent application WO 2013 068 088 A1 seems to be the closest solution. The document describes an implant that includes two types of threads, a self-tapping thread and a compression thread, but these two threads connect to separate areas. The structure is stabilized by the self-tapping screw and facilitates osseointegration around the implant.
    The common disadvantage of the implants described above is that the dentist cannot determine the thickness of the cancellous and cortical bone during the implantation process. Therefore, he cannot estimate in advance whether the threaded part of the implant also ends in the harder cortical bone, which adheres to the cancellous bone closer to the oral cavity. It is important for the specialist to be aware of this in order to choose the implant with the correct thread and thus to fix the structure in the bone in a stable manner.
    The object of the present invention is to overcome the deficits of the existing solutions and to provide a structure which is able to fix the implant better in the cortical and cancellous bone region, so that it can be loaded after a week.
    The idea of the invention is based on the knowledge that when the combination is carried out according to the main claim, a more advantageous solution is created.
    According to the target sentence, the most general embodiment of the invention can be implemented as specified in claim 1. Various embodiments of the invention are described in the subclaims.
    The invention relates generally to an implant structure, primarily for implantation in the cortical area, comprising a drive head and a long neck. The feature of the invention is that a special thread profile is connected to the neck, which supports the joint function of the cortical bone and the cancellous bone. The long neck means that the structure can reach the cortex.
    Another embodiment is when the threaded section has a conical profile and the part of the threaded profile near the neck is the compression part, the more distant part is the self-tapping section. Another embodiment may be if a combination section, which allows the self-tapping and the compression sections to work together, is included between them.
    [0017] According to another solution, the compression section and at least part of the combination section provide a surface that supports osseointegration.
    In one embodiment, the largest diameter of the thread profile exceeds the largest diameter of the drive head. The length of the neck exceeds the length of the thread profile.
    When using the invention, the implant can be loaded after a maximum recovery time of two weeks, its position is stable and ease of osseointegration is ensured.
    CH 715 227 A2 The invention will now be described in more detail with reference to the exemplary embodiment. The accompanying drawings show the following:
    Fig. 1: side view of the structure,
    Fig. 2: top view of the structure,
    Fig. 3: Implantation of the structure in damaged cancellous bone,
    Fig. 4: Implantation of the structure in a thin alveolar ridge,
    Fig. 5: Implantation of the structure in the thin alveolar ridge, so that the drive head is located in both the cancellous and the second cortical bone at the same time.
    Fig. 1 shows the drive head 1 with axially engraved four grooves every 90 degrees so that the structure can penetrate the bone. The neck 2 is connected to the drive head 1 with a curve. The diameter of the long neck 2 is maximum, with the rounding, in the middle part of the neck 2 there is a smaller, slimmer part. At the other end of the neck 2, opposite the drive head 1, there is the thread profile 5. The thread profile 5 has a conical shape. The thread profile 5 comprises the self-tapping section 3, the compression section 4, with the combination section 7 in between, which enables both the self-tapping and the bony compression. The compression section 4 and at least part of the combination section 7 provide a surface that supports the osseointegration 6. The osseointegration surface 6 is rough and thereby supports the adhesion of the bone and the bone substitute 10 used.
    Fig. 2 shows a plan view of the drive head 1 with axially engraved four grooves every 90 degrees in the axial direction in order to drive the structure into the bone. The top section of the compression section 4 of the drive head 1 can be seen since the largest diameter of the predecessor exceeds the largest diameter of the drive head 1.
    In Fig. 3 the structure of the already implanted side view is shown when the soft cancellous bone 9 adhering to the hard cortical bone 8 creates a gap at the implantation site due to a damaged condition, which is larger the diameter of the Implant. In order to fill up the location of the implant in this case, the use of a bone replacement 10 is proposed. The figure also shows the neck 2, the self-tapping section 3, the compression section 4, the thread profile 5, the surface carrying the osseointegration 6 and the combination section 7.
    Fig. 4 shows the side view of the structure when implanted in cancellous bone 9 within the shell of the cortical bone 8 with a thin alveolar ridge. In the figure it can be seen that the thread profile 5 is screwed into the cancellous bone 9 and the drive thread 1 is fastened to the long neck 2 which extends outside the bone. The figure also shows the self-tapping section 3, the compression section 4, the surface that supports osseointegration 6, and the combination section 7.
    In Fig. 5, the structure in the cortical is 8 is implanted in the side view with a thin alveolar ridge, so that the thread profile 5 is screwed into both the cancellous bone 9 and the second cortex 8. The figure also shows the drive head 1, the neck 2, the self-tapping section 3, the compression section 4, the surface which supports the osseointegration 6, the combination section 7, the cortex 8 and cancellous bone 9.
    During the procedure, a two-phase installation is unnecessary because the implant can be screwed directly into the cortical bone and can be stabilized without displacement due to the thread. If necessary, bone substitute material can be used to replenish the gap after tooth extraction.
    [0027] The structure offers several advantages. The advantage of the invention is that the dentist does not have to decide when implanting whether he fixes the implant in the cancellous or cortical bone, because the unique thread and the geometry of the drive head makes it irrelevant and can be screwed into both bones, even at the same time Time. Another advantage is the conical shape of the thread profile, which accelerates the osseointegration of the soft cancellous bone. Another advantage is that two-phase implantation becomes superfluous, because if there is no cancellous bone, there is no need to wait for osseointegration, but the implant can be screwed into the cortex immediately. When the neck is bent, it is easy to incorporate the structure even with a bone structure that is difficult to access.
    The invention can also be implemented within the scope of protection by other embodiments. One embodiment may be a curved neck structure. The field of application of the invention is primarily dental, but the structure can be used with oral surgical implants.
    CH 715 227 A2
    权利要求:
    Claims (6)
    [1]
    Claims
    1. Implant structure, mainly for cortical implantation, which comprises a drive head (1) and a long neck (2), characterized in that a special thread profile (5) is connected to the neck (2), which supports the joint function of the cortical bone (8) and the adherent cancellous bone (9) supported.
    [2]
    2. The implant structure according to claim 1, characterized in that the thread profile (5) has a conical profile, the part of the thread profile (5) close to the neck having a compression section (4), the further part having a tapping section (3).
    [3]
    3. The implant structure according to claim 1 or 2, characterized in that between the self-tapping section (3) and the compression section (4) there is a combination section (7) which performs the joint function of the cortical bone (8) and the cancellous bone (9) supported.
    [4]
    4. The implant structure according to one of claims 1 to 3, characterized in that a surface for the osseointegration (6) is provided in the compression section (4) and at least part of the combination section (7).
    [5]
    5. The implant structure according to one of claims 1 to 4, characterized in that the largest diameter of the thread profile (5) exceeds the largest diameter of the drive head (1).
    [6]
    6. The implant structure according to one of claims 1 to 5, characterized in that the length of the neck (2) can exceed the length of the thread profile (5).
    CH 715 227 A2
    类似技术:
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    同族专利:
    公开号 | 公开日
    CH715227B1|2020-03-31|
    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
    CH00978/18A|CH715227B1|2018-08-10|2018-08-10|Implant structure for cortical implantation.|CH00978/18A| CH715227B1|2018-08-10|2018-08-10|Implant structure for cortical implantation.|
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