WO2015010067A1 - Implant osseux permettant une auto-ostéotomie et procédé associé - Google Patents

Implant osseux permettant une auto-ostéotomie et procédé associé Download PDF

Info

Publication number
WO2015010067A1
WO2015010067A1 PCT/US2014/047267 US2014047267W WO2015010067A1 WO 2015010067 A1 WO2015010067 A1 WO 2015010067A1 US 2014047267 W US2014047267 W US 2014047267W WO 2015010067 A1 WO2015010067 A1 WO 2015010067A1
Authority
WO
WIPO (PCT)
Prior art keywords
implant
bone
lai
core body
tip
Prior art date
Application number
PCT/US2014/047267
Other languages
English (en)
Inventor
Parsa T. ZADEH
Original Assignee
Zadeh Parsa T
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/946,509 external-priority patent/US20140023990A1/en
Application filed by Zadeh Parsa T filed Critical Zadeh Parsa T
Priority claimed from US14/335,398 external-priority patent/US10064707B2/en
Publication of WO2015010067A1 publication Critical patent/WO2015010067A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A61C8/0024—Self-screwing with self-boring cutting edge
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/006—Connecting devices for joining an upper structure with an implant member, e.g. spacers with polygonal positional means, e.g. hexagonal or octagonal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0037—Details of the shape
    • A61C2008/0046—Textured surface, e.g. roughness, microstructure

Definitions

  • the present invention generally relates to bone implants, such as dental implants. More particularly, the present invention is directed to a self- osteotomizing and self-grafting bone implant which creates its own osteotomy and facilitates bone growth and integration of the implant.
  • the threads of the fastener take advantage of the three properties of compressibility, flexibility and malleability of the receiving material to engage it with large enough frictional force so as to secure the fastener to the recipient material.
  • the ultimate tightness or securement of the fastener in non-vital objects is the same initial tightness that is achieved by the frictional forces between the body of the screw and the walls of the hole and engagement of the threads into the material.
  • Such non-vital structures wood, plastic, metal
  • the trapped bone is repeatedly and cyclically washed and dried in the trap before it is recovered, thereby compromising the vitality and viability of the removed bone.
  • osteotomy for the chosen implant and patient. It is important to know that the perfect size of the osteotomy for each implant size varies and depends on the condensability of the bone in that site, which can only be accurately known while the implant is being seated in the osteotomy. Inappropriate osteotomy size for a particular site is the most common cause of implant waste at dental offices that contributes to unnecessary higher cost to the consumers.
  • this implant is considered "oseo-integrated" when new bone cells grow into these gaps, totally obliterating any space between the host bone and the implant.
  • This process takes approximately two to six months and hence the typical waiting period of three to six months following implant placements for integration. If part of the implant surface is in grafted bone, other than autogenous bone, the integration time is further extended because usually the grafted material has to first get resorbed and then host bone grows into its space. Any micro or macro movement of the implant surface during this period prevents formation of bone next to its surface and results in failure.
  • the present invention resides in a self-osteotomizing and self- grafting bone implant, with macro-stabilizing featu res, that osseointegrates within a much shorter time period.
  • the implant generally comprises a head and a core body extending from the head to a tip.
  • An osteotomy blade extends outwardly from at least a portion of the core body and forms a spiral thread having multiple turns around the core body to the tip.
  • At least a portion of a surface of the osteotomy blade distal and facing generally outwardly from the core body is generally flat and defines a stabilizing wall.
  • the stabilizing wall includes a bone cutting edge.
  • the open-faced channel is formed in the thread at an angle which is not normal with respect to the elongated axis of the core body.
  • the channel is cut into the thread at an angle of less than ninety degrees, creating a positive rake angle, such as thirty degrees. This creates a bone cutting edge on one surface of the channel, while presenting a non-cutting edge at the opposite edge or surface of the channel.
  • the channel creates multiple osteotomy blades having one or more leading bone cutting edges as the one or more channels are formed through the spiral thread of the implant.
  • the implant is generally tapered from the head to the tip. At least a portion of the osteotomy blade adjacent the core body is of
  • the tip is rounded and corresponds to a diameter of a pilot hole drilled into the bone. Typically, the diameter of the tip is slightly smaller than that of the pilot hole.
  • the head of the implant may be configured to receive a dental abutment.
  • a generally cylindrical neck of the head is disposed adjacent to the core body.
  • a generally concave outer surface of the head extends between the neck and an upper head surface. This feature encourages bone growth on top of the implant, further securing the implant in place.
  • a pilot hole is drilled into the bone having the diameter generally that of the diameter of the tip of the implant or slightly larger.
  • the pilot hole is drilled to a depth corresponding to a length of the in-portion of the implant.
  • the pilot hole may be in the shape of the core of the implant.
  • the tip of the implant is inserted into the pilot hole.
  • the implant is drivingly rotated, causing the osteotomy blade to cut into the bone and create an osteotomy generally corresponding to a configuration of an in-bone portion of the implant. Bone fragments cut by the osteotomy blades are received into the one or more channels while the implant is rotated.
  • Directing and receiving the cut bone fragments (fresh autogenous graft) into the channels lessens the time required to integrate the implant into the bone. Moreover, the implant is essentially carved into the bone, creating its own osteotomy, and thus non- autogenous bone material is not required for grafting.
  • FIGURE 1 is a side perspective view of a bone implant embodying the present invention
  • FIGURE 2 is a side elevational view of the bone implant of FIG. 1 ;
  • FIGURE 3 is a bottom view taken generally along line 3-3 of FIG. 1 ;
  • FIGURE 4 is a cross-sectional view of the bone implant taken generally along line 4-4 of FIG. 1 ;
  • FIGURE 5 is a partial cross-sectional view taken generally along line 5- 5 of FIG. 1 ;
  • FIGURE 6 is an enlarged view of area "6" of FIG. 1 ;
  • FIGURE 7 is an enlarged view of area "7" of FIG. 1 ;
  • FIGURE 8 is a side perspective view of another bone implant embodying the present invention.
  • FIGURE 9 is a cross-sectional view taken generally along line 9-9 of FIG. 8;
  • FIGURE 1 0 is a perspective view of a bone implant embodying the present invention having a dental abutment attached thereto;
  • FIGURE 1 1 is a cross-sectional view taken generally along line 1 1 -
  • FIGURE 1 2 is a cross-sectional and diagrammatic view of a prior art implant, with a portion thereof exposed;
  • FIGURE 1 3 is a cross-sectional diagrammatic view illustrating bone tissue having a pilot hole drilled therein for receipt of an implant embodying the present invention;
  • FIGURE 1 4 is a cross-sectional and diagrammatic view similar to FIG. 1 3, but illustrating the implant of the present invention submerged in bone and gum tissues;
  • FIGURE 1 5 is an enlarged view of area "1 5" of FIG. 1 4, illustrating channeling of bone fragments, in accordance with the present invention
  • FIGURE 1 6 is a side elevational view of another bone implant embodying the present invention.
  • FIGURE 1 7 is a side elevational view of yet another bone implant embodying the present invention.
  • FIGURE 1 8 is a cross-sectional view taken along line 1 8- 1 8 of FIG. 1 7;
  • FIGURE 1 9 is a front perspective view of a bone level implant embodying the present invention.
  • FIGURE 20 is an illustration similar to FIG 1 9, showing the hybrid nature of the implant with an apical portion machined finished surface for sharpness and a coronal media portion blasted surface for better
  • FIGURE 21 is a perspective view of the implant of FIG. 1 9, demonstrating the equal pitch between the main cutting threads and the microthreads facilitating smooth and tension free seating of this implant;
  • FIGURE 22 is a view of the implant of FIG. 1 9 inserted into a jawbone, and illustrating how the bone shavings of cutting edges accumu late and condense in the vertical channels and next to the implant;
  • FIGURE 23 is a top view of the implant of FIG. 1 9;
  • FIGURE 24 is a cross-sectional view taken generally along line 24-
  • FIGURE 25 is a cross sectional view taken generally along line 25-
  • FIGURE 26 is a partially sectioned diagrammatic view illustrating the bone implant of FIG. 1 9 installed in a jaw of a patient;
  • FIGURE 27 is an enlarged partially sectioned view taken from FIG.
  • FIGURE 28 is a front perspective view of a tissue level bone implant embodying the present invention.
  • FIGURE 29 is a partially sectioned view illustrating the implant of FIG. 26 installed in a patient's jaw;
  • FIGURE 31 is a partially sectioned view illustrating the implant of FIG. 28 installed in a patient's jaw;
  • FIGURE 32 is a front perspective view of a trans-cortical implant embodying the present invention
  • FIGURE 33 is a partially sectioned diagrammatic view illustrating the implant of FIG. 32 installed in a patient's jaw;
  • FIGURE 34 is a front perspective view of a orthopedic bone implant embodying the present invention.
  • FIGURE 35 is a partially sectioned diagrammatic view taken generally along line 35-35 of FIG. 34;
  • FIGURE 36 is a front perspective view of another orthopedic bone implant embodying the present invention.
  • FIGURE 37 is a cross-sectional view taken generally along line 37- 37 of FIG. 36.
  • the present invention resides in a self-osteotomizing and grafting implant.
  • the osteotomy is achieved by the implant 1 0 itself as it is being driven into place.
  • the bone shavings from the osteotomy are collected around the implant 1 0 as it is seated and act as autogenous bone graft, filling in the voids of the implant structure and implant bone surfaces.
  • the implant 1 0 has both vertical as well as lateral stabilization due to its design, responsible for the macro-osseointegration featu re of the implant.
  • the present implant design allows the osteotomy to be made in exact and precise dimension of the implant as it is being driven into place with the bone immediate to the implant surface remaining intact, vital and uncondensed, therefore remaining fully vascularized. Since the implant of the present invention creates its own osteotomy while it is driven into place, connective tissue is not interposed between the implant and the bone. With existing implants, as the initial stability is achieved by under-sizing the osteotomy for the intended implant, due to large variations in recipient site bone quality, it is impossible to design a standardized drilling protocol for the osteotomy under-sizing in all bone types, and micro-motion often results from osteotomy-implant size mismatch, resulting in many early implant failures.
  • the implant of the present invention creates the osteotomy at its own dimensions and in-bone configuration, irrespective of the bone quality around it. This provides for optimal initial stability required for osseointegration while avoiding over condensing and necrotizing of the bone immediately next to the implant su rface due to excessive lateral pressure from inserting the implant in an u ndersized drilled osteotomy for that bone quality, as is done in the prior art.
  • the precise approximation of vital and intact bone to the implant surface requires much less osteoblastic (bone formation) activity to take place for osseointegration to take place.
  • the features and design of the implant of the present invention results in an efficient and rapid osseointegration. This is referred to herein as "macro-osseointegration", which is the more rapid and efficient osseointegration of the implant.
  • the vertical channels or apertures, and to a lesser extent the horizontal channels or space between the threads or blades, are responsible for macro-osseointegration.
  • the bone implant 1 0 generally comprises an upper head portion 1 2 having a core body 1 4 extending from the head to a tip 1 6 generally opposite the head 1 2.
  • the core body 1 4 tapers from the head towards the tip 1 6.
  • the tip 1 6 is usually rounded, but it could be sharp for orthopedic applications.
  • a small pilot hole is usually formed having a diameter of approximately equal or slightly greater in size and diameter than the rounded tip 1 6 of the implant 1 0.
  • the rounded tip 1 6 is non-cutting, but allows the implant 1 0 to follow the initial pilot hole and leads the implant in a predetermined direction dictated by the pilot hole.
  • a plurality of osteotomy blades extend outwardly from the core body 1 4.
  • the osteotomy blades 1 8 are in essence arranged end-to-end, so as to form a spiral thread, as illustrated.
  • the spiral thread may be continuous, but still considered formed of a plurality of osteotomy blades which are arranged end-to-end even if the osteotomy blades are not separated or distinct from one another other than their design and arrangement.
  • the osteotomy blades 1 8 could be considered by those skilled in the art to form a single continuous spiral thread.
  • the osteotomy blades 1 8 extend all the way to the head portion 1 2 of the implant 1 0. Beginning portions of the blades 1 8 are referred to by the reference number 22, whereas the end portions are referred to by the reference number 20, so as to enable the reader to visualize the beginning and end of an osteotomy blade 1 8 as it extends and spirals around the core body 1 4 between the head 1 2 and tip 1 6 of the implant 1 0. Depending upon the application or manufacturing constraints or intended design, multiple blades 1 8 may form a single turn of the spiral thread, or a single blade 1 8 may form one or more turns of the spiral thread of the implant 1 0.
  • the implant 1 0 may be designed and arranged such that the blades 1 8 closer to the head 1 2 are slightly larger than the blade 1 8 apical to it, or towards the tip 1 6. In this manner, the diameter of the blade 1 8 towards the head 1 2 is greater than that of the blade 1 8 adjacent to the tip 1 6, such that the overall implant 1 0 is tapered or conical in configuration.
  • the present invention incorporates osteotomy blades 1 8, which have bone-cutting peripheral edges 24.
  • the cutting edges 24, and thus the blades 1 8, create the nearly exact space they will occupy in their lineal position as they get rotated or screwed into place in the bone.
  • the cutting edges 24 face away from the core body 1 4.
  • the thickness of the blades 1 8 and cutting edge 24 are greater towards the tip than the head 1 2. It will also be seen in FIG. 4 that the
  • thickness of the blades 1 8 decreases from adjacent to the core body 1 4 towards their peripheral edges. This creates different thicknesses of cutting edges and blades, wherein the largest cutting edge and blade is equal to or slightly smaller than the size of the base of the smallest blade at that diameter.
  • At least a portion of an upper surface facing towards the head 1 2 and/or a lower surface facing generally towards the tip 1 6 may have a depression 26 which serves to collect and channel bone shavings and other material cut by the implant 1 0 to a space between the upper and lower surfaces of adjacent osteotomy blades 1 8 and into spaces 32.
  • the depression is generally V-shaped or U-shaped, and defined by a first angled ramp 28 of the surface of the osteotomy blade 1 8 extending from the core body and a second angled ramp 30 on the surface of the osteotomy blade extending generally from the peripheral outer edge or surface of the osteotomy blade towards the first angled ramp 28, so as to define and form the depression or groove 26.
  • the depressions 26 are usually and generally concentric with the longitudinal axis of the core body 1 4, however, they can also be straight lines tangential with respect to the longitudinal axis of the core body due to manufacturing limitations as well. Nonetheless, depressions 26 are formed in the blades. The depressions 26 collect the bone shavings and condenses them as they are pushed towards the end of the depression 26, which is narrower than at the opening thereof.
  • apertures 32 are formed through the osteotomy blades 1 8.
  • the apertures 32 are preferably of a size and
  • the surfaces and edges formed by the apertures are generally flat or rounded so as to be non-cutting in nature so as to facilitate the growth of blood vessels therein.
  • the apertures are open-face and formed in the peripheral surfaces and edges of the osteotomy blades 1 8. Such open-face apertures are typically formed as a convenient manufacturing alternative to apertures formed completely within the osteotomy blades, such as illustrated in FIGS. 8- 1 1 .
  • the depressions 26 formed in the blades 1 8 serve to collect and lead the bone shavings and cut material towards the apertures 32. This can be particularly seen in FIG. 1 5.
  • the osteotomy shavings live host bone tissue
  • the strategically placed channels and grooves in the form of depressions 26 from the cutting edges of the blades 1 8 towards and into the apertures 32 of the implant body. Therefore, voids are filled with live bone tissue that can readily and rapidly heal together to provide rapid stability to the inserted implant.
  • the depressions 26 vary in size and depth across their length, thus serving to channel and guide the cut bone fragments and shavings as the implant 1 0 is screwed into position.
  • the collection of the bone shavings into the depression 26 and between the adjacent blades 1 8, in conjunction with the apertures 32 formed in the blades 1 8 allows blood and bodily fluid flow there in between.
  • new blood vessels grow therein, and thus the bone shavings and cut bone material remain vital, and enhances the osseointegration of the implant 1 0 into the bone, creating a self-grafting featu re of the implant 1 0.
  • FIGS. 1 , 2, 4, 6 and 7, at least a portion, and typically the majority, of the osteotomy blades 1 8 have an enlarged generally flat peripheral outer surface defining a stabilizing wall 34.
  • the stabilizing wall 34 faces generally away from the core body 1 4 and is generally parallel with the long axis of the implant.
  • the generally flat peripheral outer surface defining the stabilizing wall 34 has a cutting edge 24 at its edge thereof. The incorporation of the stabilizing wall 34 at least a portion of the outer peripheral surface of the blades 1 8 creates immediate lateral stabilization of the implant
  • depressions 26 as well as the stabilizing outer peripheral wall 34 along a length of the osteotomy blade 1 8 creates a generally triangular cross-section along at least a portion of the outer peripheral portion of the osteotomy blades 1 8.
  • FIGS. 8 and 9 an implant 1 1 0 very similar to that illustrated in FIGS. 1 -7 is shown, with the only differences being that the apertures 1 32 are formed completely within the blades 1 1 8, instead of being formed as open-face apertures. These apertures 1 32 perform the same functions as described above with respect to apertures 32 , in that they allow bodily fluid and blood flow and blood vessel generation in the bone shavings and cut material collected in them, as well as to the segments of bone which have been cut by the osteotomy blades. It will also be noted that the core body
  • 1 1 4 of this embodiment is narrower.
  • the width of dimension of the core body 1 1 4 may be adjusted according to the type of bone into which the implant 1 0 or 1 1 0 is to be placed. For example, harder or softer bone may require a larger or smaller core body 1 4 or 1 1 4, as dictated by the need for increased or decreased diameter osteotomy blades 1 8 or 1 1 8.
  • the head 1 2 or 1 1 2 includes an internal connection 36 and 1 36 with internal threads 38 and 1 38 for an attachment of an abutment 40.
  • abutments 40 are well known in the art.
  • the abutment may be hollow, as illustrated in FIGS. 1 0 and 1 1 , so as to receive a fastener 42, which engages the internal threads 38 or 1 38 so as to fasten the abutment 40 to the implant 1 0 or 1 1 0.
  • a false tooth or other prosthetic 44 is formed over the abutment 40, such as by firing ceramic material onto the abutment which mimics the patient's original tooth or teeth.
  • the beveled internal connection is longer in the present invention for stability of the abutment 40.
  • the longer internal bevel and shorter abutment cone connection provide stability for the abutment 40.
  • the head 1 2 design of the present invention overcomes this problem.
  • the head 1 2 is generally comprised of a generally cylindrical neck portion 46.
  • the portion 48 between the lower neck 46 and an upper surface 50 of the head 1 2 is generally cone-shaped, so as to be concave, as illustrated.
  • the widest diameter of the neck 46 converges as a curve to the implant opening on the top surface 50.
  • the implant 1 0 is designed to be placed sub-crestal. This design allows taking advantage of the maximum alveolar crest bone available, as the neck 46 is circumferentially submerged in bone 4 while the top of the implant may be placed at or below the highest part of the cortical bone.
  • the gum tissue 6 is allowed to grow both straight up and over the neck 46 and curved portion 48, as illustrated in FIG. 1 4, such that there is no implant head exposure due to lack of coverage by the gum tissue 6.
  • the neck 46 is as wide as the upper-most blade 1 8.
  • the implants may be offered in different diameters, such as narrow, regular and wide. The choice at each size depends upon the width of the alveolar crest of the area the implant is intended to be used. Thus, for example, the narrow size may be between 3-4 mm, the regular size 4-5 mm, and the wide 5-7 mm. Of course, the invention is not limited to such exact dimensions.
  • the implant of the present invention is only limited to the size of the pilot drill hole 8 (typically 1 -2 mm) which corresponds with the diameter of the rounded tip 1 6 of the implant 1 0, as shown in FIG. 1 3.
  • the implant 1 0 of the present invention is self- osteotomizing, it can be placed in sockets where prior art implants cannot be placed.
  • collecting and using the bone shavings, as illustrated in FIG. 1 5, within the depressions 26 of the blades 1 8 allows the shavings to become excellent, vital autogenous bone grafts.
  • the apertures 32 and 1 32 in the blades 1 8 allow collateral circulation to the bone between the blades 1 8 and 1 1 8.
  • the self-osteotomizing and grafting bone implant of the present invention is not necessarily limited to dental implants. Its features and advantages can be advantageously used in other bone implant/fastening circumstances.
  • a bone implant 21 0 or fastener is shown with a more traditional cone or flat head 21 2.
  • Multiple osteotomy blades 21 8, having the features described above extend outwardly from a core body 21 4.
  • the tip 21 6 is illustrated as being rounded, so as to be placed within a pilot hole, it is also conceived that in such instances the tip 21 6 could present a sharpened point so as to be driven into bone, such as during surgical operations such as those performed by orthopedists and the like, to fasten pieces of bone to one another, plates, devices and the like to bones, etc. It will be understood that the head 21 2 will have a slot or recess for a driver to drive the bone implant 21 0 into the bone.
  • FIGS. 1 7 and 1 yet another bone implant 31 0 is illustrated for use in non-dental implant applications.
  • the osteotomy blades 31 8 forming the spiral thread extend only partially along the core body 352 of the implant 31 0. This may be useful, for example, when attaching a plate or other device to a bone, wherein the lower portion containing the osteotomy blades 31 8 is inserted into the bone, and the non-threaded portion 352 extends through the plate, etc.
  • FIG. 1 8 is a cross- sectional view of FIG. 1 6, taken generally along line 1 8- 1 8, illustrating that a passageway 354 may be formed through the implant fixture 31 0 to serve the various purposes of the surgeon.
  • the non-dental applications of the bone implant of the present invention still experience the same advantages as the dental implant embodiments, in that the multiple osteotomy blades are responsible for gradual and unmatchable perfect osteotomy.
  • the scooping feature of the individual blades due to the depressions formed within the blades preserve native bone and promote self/auto-grafting.
  • the apertures formed through the blades allow fluid and blood flow between adjacent sections of bone and the bone shavings, and promotes the subsequent growth of blood vessels and new bone into the apertures.
  • the stabilizing walls formed at the peripheral end of the osteotomy blades promote horizontal or lateral stabilization, as well as vertical or lineal stabilization.
  • FIGS. 1 9-27 another bone implant 41 0 embodying the present invention is illustrated.
  • This implant 41 0 is similar in function to those described above.
  • the implant 41 0 includes a head 41 2 and a core body 41 4 extending downwardly to a tip 41 6, which is typically rounded, as described above.
  • An osteotomy blade 41 8 extends outwardly from the core body 41 4 and forms a spiral thread having multiple tu rns around the core body 41 4.
  • the implant 41 0 tapers from the head 41 2 to the tip 41 6.
  • the diameter of the osteotomy blade 41 8 adjacent to the head 41 2 is generally equivalent to a neck portion 446 of the head 41 2, and either the osteotomy blade 41 8 and /or the core body 41 4 lessen in diameter as it progresses towards the tip 41 6.
  • this implant 41 0 includes a cavity for receiving the cut bone fragments therein as the implant 41 0 is drivenly rotated or screwed into the bone.
  • the implant 41 0 includes at least one elongated channel 432 extending a length of the implant so as to pass through multiple turns of the osteotomy blade 41 8.
  • the channel 432 extends the length of the osteotomy blade spiral thread portion or an in- bone portion of the implant 41 0.
  • the implant 41 0 is a bone level implant, meaning that an upper surface 450 is generally at bone level, the channel 432 extends into the neck 446, such as covered by the progressively microthreaded 456 neck 446.
  • the at least one channel 432 is typically open-faced, as illustrated, and extends in depth from an outer edge of the osteotomy blade thread 41 8 towards the core body 41 4, and further into the core body 41 4, as illustrated in FIGS. 21 and 25. This feature offers cutting capability for the core portion of the implant so that the implant would carve it's exact dimension as it is being driven in the bone.
  • the channel is non-rectilinear, such that it forms a generally curved or spiral line from the head 41 2 , or the uppermost portion of the osteotomy blade thread, to the tip 41 6 of the implant 41 0.
  • the channel spiral or curvilinear path is oriented in a direction generally opposite the spiral pitch of the osteotomy blade 41 8.
  • the osteotomy blade thread 41 8 has a generally clockwise pathway, whereas the channel 432 pathway is generally
  • the cut bone fragments and shavings will be directed into the channel 432 and channeled toward tip 41 6, until the one or more channels 432 are partially or fully filled with the cut bone fragments and shavings and other biological debris, until the implant 41 0 is fully installed in the bone. It is the formation of the one or more channels in a spiral generally having an opposite direction as the spiral thread of the osteotomy blade 41 8 which directs and causes the cut bone fragments, shavings, and debris to be directed into the channel 432 and moved
  • the continuity or continuous nature of the channels 432 from the tip 41 6 to the top of the spiral thread 41 8 facilitates the continuous channeling of cut bone fragments and shavings into the channel 432 towards the tip and until the cut bone fragments back up and essentially fill the channel from the tip 41 6 towards the head 41 2. If the channels 432 were not continuous or of a sufficient dimension the cut bone fragments and debris caused by the carving of the implant 41 0 into the bone would have to find other open spaces or be moved towards the top of the osteotomy and possibly exit from the top of the osteotomy and out of the patient's cut bone.
  • the implant 41 0 has four channels 432 formed therein, each having a non-rectilinear pathway generally opposite the spiral thread of the osteotomy blade and sized and configured so as to receive shaved and cut bone fragments therein during the installation of the implant 41 0.
  • This is the self grafting feature of this implant as it derives and condenses the bone shavings of osteotomy blades through vertical channels 432 and against the core 41 4. This is beneficial as the
  • osseointegration of the implant 41 0 is further assisted by having the channels 432 extend across many planes or outer surfaces of the implant 41 0 so as to more firmly hold the implant 41 0 in place when osseointegration occurs. It can be seen in FIGS. 1 9 and 25 that the channels 432 extend generally in the apical part of the in-bone portion of implant 41 0 from the neck 446 to the tip 41 6. Thus, osseointegration will occur at many points surrounding the in-bone portion of the implant 41 0.
  • the formation of the one or more channels 432 into the spiral thread or osteotomy blade is done at a non-normal angle with respect to the core body.
  • the one or more channels 432 are formed at an angle of less than ninety degrees, such as approximately thirty degrees, such that one edge 424 of the side of the channel or exposed edges of the osteotomy blades 41 8 have a bone cutting edge, while the generally opposite side or wall of the channel 432, and the exposed edges 425 of the threaded spiral or osteotomy blade are not bone cutting.
  • the spiral thread has a generally clockwise direction, whereas the open-faced channels 432 have a generally opposite or counter-clockwise orientation and direction.
  • the exposed edges 424 at the right side of the channel 432 are bone-cutting edges, whereas the exposed edges 425 on the left side of the channel are not bone cutting edges.
  • This enables the implant 41 0 to be drivenly rotated in a clockwise manner and cut and carve bone as it is drivenly rotated into the patient's bone.
  • reverse movement of the implant 41 0 is restricted or even prevented
  • an outermost or peripheral edge or surface of the osteotomy blade thread is generally flat so as to form a
  • This stabilizing wall has the same features and advantages as that described above, in that it provides a substantially large area boundary between the implant 41 0 and the adjacent bone so as to provide horizontal or lateral stabilization of the implant 41 0 with respect to the adjacent bone.
  • the cross-section of the osteotomy blade thread 41 8 is generally frustoconical.
  • One or more cutting edges 424 are formed by the osteotomy blade thread 41 8, and more particularly defined by the stabilizing wall 434. These bone cutting edges can comprise the exposed leading edges formed by the channels 432, and may also comprise the upper and lower edges formed by the upper and lower surfaces 420 and 422 of the osteotomy blade thread. These edges are sufficiently sharp so as to cut directly into the bone as the implant 41 0 is rotated and driven into the bone, essentially carving the bone where the osteotomy blade thread 41 8 will reside within the bone, or in other words creating a self-osteotomy, which essentially
  • the upper surface 420 and lower surface 422 of the osteotomy blade thread may include ramps and grooves, as described above, in order to further facilitate the direction of cut bone shavings.
  • these upper and lower surfaces 420 and 422 may be generally rounded or flat and not include such ramps or channeling grooves.
  • an upper portion, also referred to herein as a coronal media portion, of the implant is blasted with media, such as sand or other particles, so as to create divots, imperfections and otherwise roughen the su rface for better osseointegration.
  • media such as sand or other particles
  • Such roughened surface illustrated by cross-hatching and the reference number 452, allows the bone to better adhere to the outer surface of the media blasted portion of the implant.
  • a lower portion 454 of the implant also referred to herein as an apical portion, is not media blasted and roughened, but instead is left with its machined finished surface.
  • the machined finished surface has sharp edges, which are used to cut into and carve into the bone. Media finishing or roughing the entire implant would dull these sharp cutting edges.
  • the majority of the cutting blades portion of the implant is not media blasted, wherein an upper portion, including the neck and head of the implant, is media blasted to roughen the surface for better osseointegration.
  • the neck portion includes microthreads 456. These microthreads have, as illustrated, have the same outer diameter. For the microthreads that are on the lower portion of the tapered implant, these microthreads have a greater width or thickness than those of the upper portion. As shown in FIG. 21 by the areas having arrows a and b pointing thereto, the microthreads have the same pitch angle as the major blades of the implant, which are not normal or at a ninety degree angle with respect to the central axis of the implant.
  • a pilot hole is first drilled into the bone, as illustrated and described above with respect to FIG. 1 3.
  • the tip 41 6 corresponds to the diameter of the drilled pilot hole, typically being slightly smaller than the diameter of the pilot hole so as to be received therein.
  • the pilot hole guides the placement of the implant 41 0 into the bone 4.
  • the pilot hole 8 is approximately the length of the in-bone portion of the implant 41 0, in the case of FIG. 26 being from the top surface 450 to the tip 41 6.
  • pilot hole 8 is used to generally guide the placement of the implant 41 0, it will be understood by those skilled in the art that it is in fact the osteotomy blade and thread 41 8 which create the self- osteotomy and carve the bone 4 as the implant 41 0 is installed.
  • the size of the increasing pilot hole or osteotomy drilled before the insertion of the implant, as a diameter was slightly less than the outer diameter of the at least threaded portion of the implant. This created a very tight fit with pressure in an effort to keep the implant within the patient's bone, such as jawbone. However, this pressure created bone pain, and sometimes failu re of the implant, as indicated above.
  • the implant creates its own osteotomy with the cutting edges of the osteotomy blades essentially carving out the bone so that the in-bone portion of the implant resides in the carved out portion
  • the actual diameter of the osteotomy itself is much smaller than previously, and approximates the diameter of the core body instead of the threads or overall implant.
  • the bone implant 41 0 comprises a dental implant whose head 41 2 is adapted to receive an abutment, such as through recess 436.
  • an abutment such as through recess 436.
  • Exemplary abutments and dental restorations are described above with respect to FIGS. 1 0 and 1 1 , or could be those used commonly in the art.
  • FIG. 26 it will be appreciated that the abutment and false tooth or dental restoration will be somewhat obscured by the gum tissue 6 extending upwardly from the jawbone 4, so as to give the appearance of a natural tooth of the patient.
  • the portion 448 between the u pper surface 450 of the generally cylindrical neck portion 446 is concave, as illustrated, which allows taking advantage of the maximum alveolar crest bone available as the implant may be placed at or below the highest part of the cortical bone, so as to accommodate invariable unevenness of the alveolar crest bone. This feature also allows bone to grow over the concave area 448, further securing the implant in place.
  • tissue level dental implant 51 0 With reference now to FIGS. 28 and 29, a tissue level dental implant 51 0 is shown with the head 51 2 extending through the soft tissue and into oral environment.
  • the concave 448 surface of implant 41 0 is merged in this tissue level implant with the head 51 2.
  • this tissue level implant has the same components and features described above with respect to FIGS. 1 9-27, but labeled with a "500” instead of a "400" reference numeral.
  • the implant 51 0 includes a head 51 2 having a core body 51 4 extending to a tip 51 6, with an osteotomy blade 51 8 forming a spiral thread along a length thereof, as illustrated.
  • the thread 51 8 includes a stabilizing wall 534 having a bone cutting edge 524, and upper and lower surfaces 520 and 522.
  • One or more channels 532 are formed in the implant 51 0, and particularly through the osteotomy blade thread 51 8 and in-bone portion, as illustrated between the cylindrical neck portion 546 to tip 51 6.
  • This implant is what is known as a tissue level dental implant in that the neck portion is extended and has a generally inwardly curved or beveled portion 552 which substantially corresponds with the gingival tissue of the patient's mouth, as illustrated in FIG.29.
  • the lower cylindrical neck portion 546 is typically disposed within the bone 4, while the intermediate portion 552 extends above the lowest portion of the bone and corresponds to at least a portion of the gingival or gum tissue 6.
  • a generally concave portion 548 may still be formed between the neck 546 and the upper surface 550, as illustrated, so as to accommodate unevenness of the bone and gum tissue extending thereon.
  • Means, such as the illustrated recess 536, for receiving and attaching a dental abutment is also provided.
  • the implant 610 includes a head 612, a core body 614 extending to a tip 616.
  • the osteotomy blade thread includes a stabilizing wall 634 having one or more bone cutting edges 624, and upper and lower surfaces 620 and 622.
  • One or more open-faced channels 632 extend through the multiple turns of the osteotomy blade spiral thread 618. In this case, the channels 632 extend into the neck portion 646 and down into the tip 616.
  • this dental implant 610 is referred to as an all-in-one, wherein the head 612 includes an abutment 652 which extends above the gingival surface into the oral cavity so that to receive a clinical crown.
  • the implant 610 includes a platform 656 which is the same part as top surface 550, which may rest at the level of gum tissue 4 and which acts as a seat to a portion of the crown, as illustrated in FIG. 31.
  • a recess 636 may or may not be used to rotate the abutment in place.
  • the implant 710 includes a head 712 having a core body 714 which extends to a tip 716.
  • An osteotomy blade spiral thread 716 extends along at least a portion of the implant 710, in this case a lower portion, to the tip 716.
  • Channels 732 are formed in the osteotomy blade 718, as described above.
  • An outer peripheral surface is generally flat so as to form a stabilizing wall 734, and the osteotomy blade 718 includes at least one bone cutting edge 724.
  • osteotomy blade 718 may vary in configuration, as noted above.
  • the cross- sectional thickness of the osteotomy blade thread 718 may increase from the uppermost portion towards the tip 716. This is for the same reasons and benefits as described above.
  • this dental implant 710 is generally referred to as a trans-cortical implant in that a generally cylindrical shaft portion of the core body 714 extends into the bone 6 and the head 71 2 including the abutment 752 resides above the bone and into the gingival tissue 4.
  • a platform 750 and a generally conical upper head portion having a bevel 754 may be used for receiving a crown.
  • a recess 736 may or may not be used in order to rotate the implant in place and provide anti- rotational resistance for the restoration.
  • FIGS. 34-37 bone implants similar to that described above with respect to FIGS. 1 6- 1 8 are illustrated.
  • the embodiments having the osteotomy blade spiral thread and open-face channels of FIGS. 1 9- 27 are not necessarily limited to dental implants.
  • a bone implant 81 0 has a head 81 2, which is illustrated as being conical but may also be flat. It will be understood that the head 81 2 will have a slot or recess 836 for a driver to drive the bone implant 81 0 into the bone.
  • the bone implant 81 0 includes a core body 81 4 extending to a tip 81 6.
  • An osteotomy blade 81 8 extends as a spiral thread towards the tip 81 6.
  • the spiral thread has upper and lower surfaces 820 and 822, and an outer peripheral edge is generally flat to form a stabilizing wall 834, as described above.
  • the osteotomy blade 81 8 includes one or more bone cutting edges 824, such as at the edge of the stabilizing wall 834 defined by the open-faced channels 832 formed in the implant 81 0.
  • a rounded tip 81 6 is illustrated in FIG. 34, it will also be understood that the tip 81 6 could present as a sharpened point so as to be driven into bone, such as during su rgical operations to fasten pieces of bone to one another, plates, devices, and the like to bones, etc.
  • FIGS. 36 and 37 yet another bone implant 91 0 is illustrated for use in non-dental implant applications.
  • the osteotomy blade thread 91 8 extends only partially along the core body 952 of the implant 91 0. This may be useful, for example, when attaching a plate or other device to a bone, wherein the lower portion
  • FIG. 37 is a cross-sectional view taken generally along line 37-37 of FIG. 36, illustrating a passageway 954 formed through the implant 91 0 to serve various purposes of the surgeon.
  • a recess 956 in the head 91 2 may be used to drive the implant 91 0.
  • the tip 91 6 may be rounded or come to a sharp point as needed.
  • FIGS. 34-37 The non-dental applications of the bone implant of the present invention, as illustrated in FIGS. 34-37, still have the same advantages as the dental implant embodiments, in that the osteotomy blade is responsible for gradual and unmatchable perfect self-osteotomization.
  • the stabilizing walls provide stabilization of the implant, and the channels collect bone fragments and tissue and allow fluid and blood transfer between adjacent sections of bone and the bone shavings, and promote the subsequent growth of blood vessels and new bone into the channels.
  • the macro-osseointegration is due to the use of the autogenous biological materials, including the carved bone, into the channels, allowing fluid and blood transfer and flow into these areas such that the bone integrates within a relatively short period of time.
  • the autogenous biological materials including the carved bone
  • a level of micro-osseointegration will occur in the present invention as well.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention porte sur un implant osseux qui comprend une tête et un corps de noyau qui s'étend depuis la tête jusqu'à une pointe. Une lame d'ostéotomie s'étend vers l'extérieur depuis au moins une partie du corps de noyau pour former un filet en spirale. Des canaux forment des bords coupants de l'implant. L'implant, et en particulier la lame d'ostéotomie, est conçu pour entraîner une auto-ostéotomie et pour diriger l'os coupé vers les canaux afin de faciliter la transplantation et la croissance osseuses, et favoriser l'intégration de l'implant dans l'os.
PCT/US2014/047267 2013-07-19 2014-07-18 Implant osseux permettant une auto-ostéotomie et procédé associé WO2015010067A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US13/946,509 US20140023990A1 (en) 2012-07-19 2013-07-19 Self-osteotomizing bone implant and related method
PCT/US2013/051348 WO2014015283A1 (fr) 2012-07-19 2013-07-19 Implant osseux à ostéotomisation automatique et procédé associé
USPCT/US2013/051348 2013-07-19
US13/946,509 2013-07-19
US14/335,398 US10064707B2 (en) 2011-07-20 2014-07-18 Self-osteotomizing bone implant and related method
US14/335,398 2014-07-18

Publications (1)

Publication Number Publication Date
WO2015010067A1 true WO2015010067A1 (fr) 2015-01-22

Family

ID=52346766

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/047267 WO2015010067A1 (fr) 2013-07-19 2014-07-18 Implant osseux permettant une auto-ostéotomie et procédé associé

Country Status (1)

Country Link
WO (1) WO2015010067A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017129826A3 (fr) * 2016-01-29 2017-09-08 Nobel Biocare Services Ag Implant dentaire, outil d'insertion pour implant dentaire et combinaison d'implant dentaire et d'outil d'insertion
JPWO2016185968A1 (ja) * 2015-05-15 2018-04-05 京セラ株式会社 通信装置
IT202100001556A1 (it) * 2021-01-27 2022-07-27 Kalodon S R L Impianto dentale

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6068632A (en) * 1998-05-12 2000-05-30 Carchidi; Joseph Edward Bone tap apparatus
US20080261175A1 (en) * 2007-04-23 2008-10-23 Nobel Biocare Services Ag Dental implant
US20120178048A1 (en) * 2011-01-11 2012-07-12 Cottrell Richard D Dental implant with multiple thread patterns
US8221119B1 (en) * 2007-10-09 2012-07-17 Maurice Valen Dental implant and method of installing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6068632A (en) * 1998-05-12 2000-05-30 Carchidi; Joseph Edward Bone tap apparatus
US20080261175A1 (en) * 2007-04-23 2008-10-23 Nobel Biocare Services Ag Dental implant
US8221119B1 (en) * 2007-10-09 2012-07-17 Maurice Valen Dental implant and method of installing the same
US20120178048A1 (en) * 2011-01-11 2012-07-12 Cottrell Richard D Dental implant with multiple thread patterns

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016185968A1 (ja) * 2015-05-15 2018-04-05 京セラ株式会社 通信装置
WO2017129826A3 (fr) * 2016-01-29 2017-09-08 Nobel Biocare Services Ag Implant dentaire, outil d'insertion pour implant dentaire et combinaison d'implant dentaire et d'outil d'insertion
CN108601635A (zh) * 2016-01-29 2018-09-28 诺贝尔生物服务公司 牙种植体、用于牙种植体的插入工具及牙种植体与插入工具的组合
CN108601635B (zh) * 2016-01-29 2021-10-08 诺贝尔生物服务公司 牙种植体、用于牙种植体的插入工具及牙种植体与插入工具的组合
US11602417B2 (en) 2016-01-29 2023-03-14 Nobel Biocare Services Ag Dental implant, insertion tool for dental implant and combination of dental implant and insertion tool
IT202100001556A1 (it) * 2021-01-27 2022-07-27 Kalodon S R L Impianto dentale
WO2022162537A1 (fr) * 2021-01-27 2022-08-04 Kalodon S.R.L. Implant dentaire

Similar Documents

Publication Publication Date Title
US10064707B2 (en) Self-osteotomizing bone implant and related method
US20130022942A1 (en) Self-osteotomizing and grafting bone implant
US20140023990A1 (en) Self-osteotomizing bone implant and related method
EP2237739B1 (fr) Foret pour le relèvement d'une membrane sinusienne
US8277218B2 (en) Screw-type dental implant
JP6905338B2 (ja) 骨の回収および分配のための歯科インプラント
US8491302B2 (en) Dental implant
EP2496169B1 (fr) Implant dentaire amélioré
US6537070B1 (en) Combination distraction dental implant and method of use
US8496478B2 (en) Intra-osseous implant
JP2015514496A (ja) 歯科インプラント
JP2010523179A (ja) インプラントねじの設計
KR20160130838A (ko) 치과 임플란트
US20230263600A1 (en) Threadless dental implant having attachment teeth and method of attachment of a threadless dental implant
WO2015010067A1 (fr) Implant osseux permettant une auto-ostéotomie et procédé associé
WO2012154053A1 (fr) Procédé pour fixer un implant dentaire et implant dentaire
KR101838003B1 (ko) 임플란트 시술용 드릴
EP3291759B1 (fr) Implant dentaire
KR102484721B1 (ko) 임플란트용 스레딩 버
US20220175497A1 (en) Bionic implants
Priyada et al. Concept of osseodensification—“To cut or to compress??”
Bhat et al. Self-Tapping Implants: Clinical Review
WO2024105619A1 (fr) Implant dentaire à auto-ostéotomie et élément de fixation orthopédique
Rai et al. REMOVAL OF DENTAL IMPLANT.
IL254999B2 (en) Improved dental implant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14826624

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14826624

Country of ref document: EP

Kind code of ref document: A1