• 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:
    mandibular fixation plate a bone fixation implant is provided which includes a bone fixation plate and a plurality of fixators. The bone attachment plate generally corresponds to lines of tension (a, b, c, d) transmitted to the mandible during the anatomical function of the mandible. thus, the bone attachment plate includes a primary leg (54) and an auxiliary leg (56) extending obliquely away from the primary leg. the primary leg generally corresponds in shape to a posterior limit (25) of the mandible, and the auxiliary leg generally corresponds in shape to the sigmoid notch (31) of a mandible.
    公开号:BR112012013652B1
    申请号:R112012013652-6
    申请日:2010-12-09
    公开日:2022-01-04
    发明作者:Daniel Buchbinder；Ross J. Hamel
    申请人:Synthes Gmbh；
    IPC主号:
    专利说明:

    CROSS REFERENCE WITH RELATED ORDERS
    This application claims priority from Provisional Patent Application Serial No. 61/285,781, filed December 11, 2009, the disclosure of which is incorporated herein by reference as defined herein in its entirety. TECHNICAL FIELD
    The present disclosure relates generally to bone fixing implants, and in particular it relates to a bone fixing implant configured to repair a mandibular fracture. BACKGROUND
    When bones are damaged due to trauma or disease, bone fixation implants are commonly used to achieve anatomic reduction of bone fragments, to maintain their position after reduction, and to ensure union in a desired position. Thus, bone fixation implants are typically designed to achieve an anatomically proper fit and function.
    Referring to Figures 1-2A, in which the anatomical structure on the left side of a patient with the letter “L” and a mandibular anatomy on the right side of a patient with the letter “R”, a fractured mandible (20) defines a fracture site 32 separating a pair of fractured bone segments 29a-b. Conventional approaches for fixing a fractured mandible 20, for example, in the subcondylar region 22 (arranged between the condyle 24 and the ramus 26) include implanting a bone fixation plate 28 over the fracture site 32, and affixing the plate in the mandible 20 using, for example, bone screws 30, to connect the fractured bone segments 29. The fracture site 32 in the subcondylar region 22 may be located anywhere between and including the upper subcondylar region 22a and the lower subcondylar region 22b.
    Unfortunately, it has been found that forces applied to bone plate 28 during an anatomical jaw function 20 can adversely affect the ability of bone plate 28 to secure bone fragments in their desired position. For example, long narrow plates are susceptible to deformation in response to bending and torsional forces that are applied to the plates by muscles such as the masseter, temporalis, and medial and lateral pterygoid.
    Therefore, as shown in Figure 2B, another conventional approach is to add a second bone fixation plate 28A positioned adjacent to the bone plate 28 such that each pair of plates roughly absorbs half of the forces absorbed by the plate 28 alone. However, incorporating a second bone fixation plate adds cost and complexity to the surgical procedure. Yet another approach to bone fixation includes affixing so-called three-dimensional fixation plates to the jaw 20. These fixation plates are more trapezoidal in shape than the long narrow plates 28, and are even wider to better resist bending and twist. However, since the wider geometry includes two side-by-side screw holes at the apex of the plate, the plates are limited with respect to the height on the condyle 24 where they are placed. Thus, three-dimensional plates lose positional flexibility, and are difficult to implement when dealing with a fracture in the upper subcondylar region 22a. SUMMARY
    In one embodiment, a bone attachment plate is configured to be attached to a mandible. The mandibular bone attachment plate includes a first leg, and a second auxiliary leg extending obliquely away from the first leg, so that the first leg generally corresponds in shape to the posterior limit of the mandible, and the auxiliary leg generally corresponds in shape to the sigmoid notch of the mandible. DESCRIPTION OF DRAWINGS
    The above-mentioned summary, as well as the following detailed descriptions, are best understood when read in conjunction with the accompanying drawings. For the purpose of illustrating a subcondylar fixation implant and related methods thereof, there are shown in the exemplary embodiments of the drawings, in which the reference numeral types correspond to the reference numeral types entirely. The subcondylar fixation implant and related methods are not limited to the specific modalities and methods disclosed, and reference is made to the claims for this purpose. Figures 1A-B are perspective views of a mandible;
    Figure 2A is a perspective view of a conventional bone anchor plate attached to a pair of fractured subcondylar bone segments;
    Figure 2B is a perspective view of a pair of conventional bone anchor plates attached to a pair of fractured subcondylar bone segments;
    Figure 3 is a top plan view of a subcondylar bone fixation plate constructed in accordance with one embodiment;
    Figure 4 is an enlarged perspective view of a bone fixing implant including a bone fixing plate of the type illustrated in Figure 3, shown implanted in a mandible and a plurality of anchor bones which fix the bone fixing plate to the mandible; Figure 5 is a diagram of anatomical stress lines of a mandible;
    Figure 6A is a top plan view of a subcondylar bone fixation plate constructed in accordance with an alternative embodiment; and
    Figure 6B is a top plan view of a subcondylar attachment plate as illustrated in Figure 6A, but constructed in accordance with an alternative embodiment. DETAILED DESCRIPTION
    The illustrated modalities are directed to a bone fixation implant that can be implanted to facilitate proper union of two fractured bone segments. The fixation implant has particular utility as a mandibular fixation implant having a precise anatomical shape and providing an anatomical fit.
    Certain terminology may be used in the following description for convenience only and should not be construed as limiting in any way. For example, a bone fixation implant 50 of one embodiment includes a bone fixation plate 51 that is elongated along a longitudinal direction L, and defines a thickness that extends in a transverse direction T that is substantially perpendicular. in both longitudinal direction L and lateral A. As oriented in Figure 3, the bone plate body 51 extends vertically along a direction L. Therefore, the bone attachment plate 52 is described here in the orientation illustrated in Figure 3 , it being appreciated that the orientation of the bone attachment plate 52 may change during use. Therefore, while certain terminology may be used in the following description, it should not be regarded as limiting in any way.
    With continuous reference to Figure 3, a bone fixation implant 50 constructed in accordance with one embodiment includes a bone fixation plate 52 and at least one bone anchor such as a plurality of bone anchors 55 (see Figure 4) configured to attach the anchor plate 52 to an underlying bone structure. Bone attachment plate 52 defines a plate body 51 that includes a primary attachment leg 54 and an auxiliary attachment leg 56 that extends obliquely from the primary attachment leg 54. Primary leg 54 extends substantially longitudinally. along a central longitudinal axis LL between the first proximal longitudinal end 58 and the second distal longitudinal end 60 spaced from the proximal longitudinal end 58 along the longitudinal direction L. The primary leg 54 may have a length of approximately 35 mm along an LL longitudinal axis, although it would be appreciated that the length could be anywhere within a range of approximately 20mm and 45mm. Bone fixation plate 52 and fasteners 55 may be constructed from a titanium grade implant, although any compatible alternative material may be used as desired.
    Plate body 51 defines a plurality of transverse proximal bone attachment apertures 70 and distal bone attachment apertures 72 that extend through primary leg 54 and are configured to receive respective permanent bone attachments 55 (see Figure 4) , which may be provided as screws, rivets, pins, nails, or any other compatible alternative fasteners configured to secure bone plate 52 to an adjacent bone structure permanently, which is for substantially as long as bone plate 52 remains implanted. Bone attachment plate 52 defines a first outer surface 53 that receives fasteners 55, and a transversely opposed bone front surface 57 that can face and support adjacent bone when attachment plate 52 is implanted into the adjacent bone structure. The front surface of bone 57 can be contoured to meet the surface of the adjacent bone structure. The bone attachment plate 52 may define a transverse thickness between the opposing surfaces 53 and 57 of approximately 1 mm, although it would be appreciated that the transverse thickness may be anywhere within a range of approximately 0.5 mm and 1.5 mm, or with a alternative variation any as desired.
    In the illustrated embodiment, apertures 70 and 72 define cylindrical screw holes, and may be threaded or unthreaded as desired. In the illustrated embodiment, a pair of longitudinally spaced proximal openings 70 are disposed in a proximal portion 59 of the primary leg 54 adjacent the proximal end 58, and three longitudinally spaced distal openings 72 are disposed in a distal portion 61 of the leg 54 which is disposed adjacent to the distal end 60. Thus, the distal end 60 has a longer longitudinal length than the proximal end 58. The adjacent proximal openings 70 are spaced the same distance apart from the adjacent distal openings 72, although it should be appreciated that the spacing between the openings adjacent 70 and 72 could differ as desired. It should be appreciated that a number of openings 70 and 72 in the proximal and distal portions 59 and 61, respectively, may differ as desired, although the plate body 51 defines more openings 72 in the distal portion 61 of the primary leg 54 than the openings 70 of the primary part 59.
    Primary leg 54 defines an inner side wall 66 and an outer side wall 68 that each extend between the proximal and distal ends 58 and 60. When the anchor plate 52 is attached to an underlying jaw, the side wall external 68 generally meets the posterior boundary 25 of the mandible 20, while the inner side wall 66 generally meets the mandibular region 27 which is anterior of the leg 54 (see Figure 1A-B). Thus, the inner side wall 66 may define a first or a front surface, and the outer side wall 68 may define a second or rear surface which is arranged rearward with respect to the first surface, which is thus arranged anteriorly with respect to the first surface. On the second surface, the inner side wall 66 and the outer side wall 68 extend generally along the longitudinal axis LL, and generally follow the contour of the openings 70 and 72 when in alignment with the openings. Thus, side walls 66 and 68 define necks 76 between openings 70 and 72 such that side walls 66 and 68 are close together at locations on necks 76 with respect to locations that are aligned with openings 70 and 72. Otherwise indicated, necks 76 define a lateral thickness (or width) that is less than the width of leg 54 at locations laterally aligned with apertures 70 and 72. In various embodiments, necks 76 may define a width which is greater than, less than, or substantially equal to the diameter of openings 70 and 72. Necks 76 may define a lateral width of approximately 3 mm, although it should be appreciated that the lateral width of necks 76 may be in a variation from approximately 1mm to approximately 5mm, or any dimension as desired.
    The leg 54 includes a midline region 74 that extends longitudinally between the proximal and distal portions 59 and 61. As illustrated, the midline region 74 is devoid of openings for receiving permanent bone fasteners. The mid region 74 is configured to extend over the fracture when the fixation plate 52 is attached to an underlying bone, for example the mandible 20. Otherwise indicated, the mid region 74 is not configured to receive fasteners that attach to the underlying bone. Since the proximal portion 59 of the primary leg 54 is configured to attach to a first bone segment, and a distal portion 61 of the primary leg 54 is configured to attach to a first bone segment, and a distal portion 61 of the primary leg 54 is configured to attach to a first bone segment. 61 of the primary leg 54 is configured to attach to a second bone segment that is separated from the first bone segment by a fracture. Sidewalls 66 and 68 taper laterally toward each other in the midline region 74, that is, along a distal direction from a more distal opening 70, and along a proximal direction from a more proximal opening 72, so that so as to define a sharpened profile 78 which defines a sharpened throat 80.
    The throat 80 is disposed substantially longitudinally midway between the most distal opening 70 and the most proximal opening 72, and defines the smallest width of the sharpened profile 78. The throat may define a width that is greater than, less than, or substantially the same as those of the necks 76. The leg 54 has a profile narrow enough in lateral dimension so that the opposing inner and outer walls 66 and 68 are maintained with their anatomical boundaries of the condyle 24 when the fixation plate 52 is implanted in the mandible. 20. It should be appreciated, however, that the leg 54 can define any compatible size, shape, and profile as desired for attaching a pair of fractured bone segments.
    With continuous reference to Figure 3, auxiliary leg 56 extends from primary leg 54, and is integral with primary leg 54, although this may alternatively be discretely connected to primary leg 54 as desired. In accordance with an illustrated embodiment, the auxiliary leg 56 extends from a proximal end of the midline 74, which is at a location distal to the most distal opening 70. It should be appreciated that an auxiliary leg 56 may alternatively extend from there. from any alternate location of primary leg 54 as desired, such as from a proximal portion 59. In the illustrated embodiment, auxiliary leg 56 extends outside of inner side wall 66, such that auxiliary leg 56 extends anteriorly from the primary leg 54 when the bone attachment plate 52 is attached to the underlying jaw.
    Because auxiliary leg 56 extends "right" to primary leg 54 from a first face view 53, bone attachment plate 52 is configured to be implanted in a right subcondylar region of patient 22R. It should be appreciated that the bone attachment plate 52 may also be constructed so that the auxiliary leg 56 extends to the "left" of the primary leg 54 from a first face view 53, so that the attachment plate 52 is configured to be implanted in a left subcondylar region of patient 22L (see figure 4). In this regard, the bone fixation plate 52 may include an indication 99, such as "R" or "L" which indicates whether the plate 52 is to be implanted in the right subcondylar region 22R (i.e. a bone fixation plate). oriented) or in the left subcondylar region 22L (i.e., a left oriented bone fixation plate), respectively.
    Auxiliary leg 56 extends outward from primary leg 54 in a laterally forward direction, and also flares or curves outward from primary leg 54 as it extends distally. Therefore, auxiliary leg 56 is convex with respect to primary leg 54, and terminates at free distal end 56 disposed proximally with respect to distal end 60 of primary leg 54. Therefore, bone attachment plate 52 is provided generally in the form from the Greek letter lambda “A” or the number “7”.
    Auxiliary leg 56 defines a proximal end 62 which also defines a laterally innermost end which is affixed to primary leg 54 and a free distal end 54 which also defines laterally outermost end of auxiliary leg 56. Auxiliary leg 56 is elongated along a centrally disposed axis CC that is concave with respect to a straight line from proximal end 62 to distal end 64. Concave axis CC is convex with primary leg 54. Central axis CC may define a radius of curvature of approximately 22mm, although it should be appreciated that the radius of curvature can be anywhere in the range of approximately 10mm and 30mm. As will be described in more detail below, the auxiliary leg 56 is configured to generally conform to the shape of the sigmoid notch 31 when the anchor plate 52 is implanted in the jaw 20.
    Auxiliary leg 56 defines a line T that extends tangential to central axis CC at proximal end 62 of auxiliary leg 56. Tangential line T defines an angle θ to longitudinal axis LL at the intersection between legs 54 and 56 of approximately 47°. °, although it should be appreciated that the angle θ can be anywhere in the range of approximately 30° to 70°. It should of course be appreciated that auxiliary leg 56 could define any compatible shape as desired. For example, leg 56 could extend straight rather than curved, or it could define straight segments that are angled relative to each other. Thus, the central axis CC could define the angle θ if, for example, the central axis CC were linear at the intersection between the proximal end 62 and the primary leg 54. Thus, when the central axis CC is said to “define” an angle with respect to the longitudinal axis LL, the central axis CC could define the angle directly, or through a line that extends tangential T to the central axis CC.
    Auxiliary leg 56 defines an inner sidewall 82 and an outer sidewall 84 that each extend between proximal and distal ends 62 and 64, respectively. The inner side wall 82 is arranged close to the inner side wall 66 of the primary leg 54 and then the outer side wall 84 and meets the inner side wall 66. The outer side wall 84 encounters a direction opposite the inner side wall 82. Thus , the outer sidewall 84 is configured to meet the sigmoid notch 31 when the anchor plate 52 is implanted. Otherwise indicated, the outer side wall 84 is disposed anterior to the inner side wall 82. Therefore, the outer side wall 84 defines a more anterior surface of the implant body 51, and the outer side wall 68 defines a more posterior surface. of the implant body 51. Furthermore, the outer side wall 82, and in particular the auxiliary leg 56, is geometrically shaped to correspond generally to a curvature of a sigmoid notch 31 when the outer side wall 68 of the primary leg 54 is aligned with the posterior limit 25 of mandible 20.
    Plate body 51 defines a proximal portion 63 and auxiliary leg 56 adjacent the proximal end 62 and a distal portion 65 of auxiliary leg 56 which is disposed adjacent the distal end 64. Auxiliary leg 56 defines one or more openings 86 in the auxiliary portion 56. distal 65, so that the proximal end 62 is free of openings. Each of the openings 86 is configured to receive a permanent fastener 55, such as a screw, rivet, pin, nail, or any other compatible fasteners, to permanently attach to an underlying bone structure, which is for while the bone plate 52 is being implanted. Apertures 86 may be threaded as desired. A pair of apertures 86 is illustrated as being disposed adjacent each along a central axis C-C. The apertures 86 may be spaced apart along an axis CC by a distance greater than, less than, or substantially equal to the distance of the adjacent apertures 70 and 72. The bone plate 52 may be properly secured to the underlying bone structure without all of the apertures 86 fasteners. Any of the apertures 86 that are not attached may be cut out of the bone plate 52 as desired by the surgeon.
    The inner side wall 82 and the outer side wall 84 generally extend along a central axis C-C, and generally follow the contour of the openings 86 when in alignment with the openings. Thus, side walls 82 and 84 define necks 88 between apertures 86, such that side walls 82 and 84 are proximate to each of the locations on necks 88 with respect to locations that are aligned with apertures 86. Necks 88 define a width W which may be less than, greater than, or substantially equal to the width of the necks 76. The width W may be approximately 3 mm as illustrated, or anywhere in the range of approximately 1 mm to 5 mm . Side walls 82 and 84 taper towards each other at a location proximal to openings 86 so as to define a throat 95 having a tapered profile 92.
    In accordance with an illustrated embodiment, the proximal portion 63 of the auxiliary leg 56 is devoid of openings receiving permanent bone anchors extending transversely therethrough, so that the proximal portion 63 is configured to extend over the fracture when the plate attachment 52 is attached to an underlying bone, for example the mandible 20. Otherwise indicated, the proximal end 62 is not configured to receive any permanent bone attachments that attach to an underlying bone. Therefore, the mid region 74 of the primary leg 54 and the proximal portion 63 of the auxiliary leg 56 define a spanning portion 90 configured to extend across the fracture site in a subcondylar region 22 when the attachment plate 52 is attached to the bone segments. fractured.
    Referring now to Figure 4, the mandible 20 defines a fracture site 32 in the lower region of the condyle 22 that separates a pair of fractured bone segments 29A and 29B. The fracture site 32 may be disposed anywhere between and including the upper subcondylar region 22a and the lower subcondylar region 22b. Therefore, the bone segment 29A is superior to the bone segment 29B, and includes the condyle 24. The bone fixation plate 52 is constructed so that the encompassing portion 90 extends over the fractured site 32, while allowing the fixation of all openings 70, 72 and 86 to the underlying mandible 20. For example, the proximal portion 59 of the primary leg 54 is configured to overlap and attach to the condyle 24 (or bone segment 29A) when the overarching portion 90 extends across fracture site 32, distal portion 61 of primary leg 54 and distal portion 65 of auxiliary leg 56 are configured to overlap and attach to upper bone segment 29B, which may include branch 26. It is appreciated that the auxiliary leg 56 is spaced from the primary leg 54 so that neither the fixation plate 52 nor the fixators 55 interfere with the inferior alveolar nerve 35, which may be disposed between the primary leg 54 and the auxiliary leg 56 when the clamping plate 52 is fixed to the jaw 2 0.
    As shown in Figure 5, without being bound by theory, it is recognized that the mandible 20 experiences primary stresses in the lines of stress A, B, C, and D illustrated during the anatomical function of the jaw 20. The lines of stress C and D are capable of acting in the subcondylar region 22, and may thus more directly affect the ability of a subcondylar fracture to heal properly. Thus, referring again to Figure 4, it should be appreciated that the primary leg 54 is configured to extend substantially along the line of tension C. the attachment plate 52 is thus configured to be anatomically positioned in the jaw 20 of in order to absorb the stresses applied during the anatomical function of the mandible. In addition, auxiliary leg 56 assists in preventing torsion, in the plane of flexion, and out of the plane of flexion of the attachment plate. Thus, the bone plate 52 may be substantially planar, and extend in a plane defined by the longitudinal L and lateral A directions.
    It should be appreciated that the geometric shape of the attachment plate 52 provides a cognitive guide that properly aligns with the plate 52 in the jaw 20. For example, the primary leg 54, and in particular the outer side wall 68 of the leg 54, is aligned with the posterior limit 25 of the jaw 20 when the auxiliary leg 56, and in particular the outer side wall 84 of the auxiliary leg 84, generally follows the contour of the sigmoid notch 31. When properly positioned, the geometry of the attachment plate 52 generally corresponds to the geometry of the voltage lines C and D shown in figure 5.
    It should be appreciated that while bone fixation plate 52 has been described in accordance with an illustrated embodiment, alternative embodiments are envisioned and intended to fall within the scope of the present disclosure. For example, while an auxiliary leg 56 has been described, it should be appreciated that more than one auxiliary leg may extend from a primary leg 56, or an additional auxiliary leg may extend from an auxiliary leg 56. In addition, there should be It will be appreciated that the size and shape of legs 54 and 56 may differ. For example, the curved leg parts may be replaced by straight leg parts, or parts having a plurality of straight leg segments which are angularly offset with respect to each other to approximate the curved profile (here intended to fall within the scope of a substantially curved shape). In addition, the lengths, widths and thicknesses of the legs 54 and 56, along with a number, size and placement of bone attachment openings 70, 72 and 86 may differ. Thus, the scope of the present disclosure is intended to include, but not necessarily be limited to, a bone plate having an improved approximation of stress lines C and D relative to conventional bone plates.
    With continuous reference to Figures 3-4, it should be appreciated that the left oriented bone fixation plates 52 and the right oriented bone fixation plates are symmetrically with respect to each other, and each bone fixation plate 52 is asymmetric. Therefore, an assembly including at least one left oriented bone fixation plate and at least one right oriented bone fixation plate can be provided. Furthermore, while it is envisioned that one size of fixation plate 52 can be provided for the vast majority of subcondylar fractures, an assembly may nevertheless include fixation plates 52 having different sizes and shape characteristics and may be constructed accordingly. any modality as described here.
    Referring now to Figure 6A, a bone attachment plate 52 may be constructed in accordance with an alternative embodiment. The plate 52 may define a plate body 51 that includes a primary leg 54 and an auxiliary leg 56 as described above, together with a support leg 100 connected between the primary leg 54 and the auxiliary leg 56. In particular, the support leg 56 bracket 100 defines a first end 102 and an opposite second end 104. The first end 102 is connected to the inner side wall 66 of the primary leg 54 and the second end 104 is connected to the inner side wall 82 of the auxiliary leg 56. illustrated embodiment, support leg 100 is integral with primary and auxiliary legs 54 and 56, although support leg may be discretely connected to one or more legs 54 and 56. As shown in Figure 6A, support leg 100 joins the distal portion 61 of the primary leg 54 and the portion 65 of the auxiliary leg 56, although it should be appreciated that the positioning of the support leg 100 can be varied as desired. For example, end 102 may be connected to primary leg 54 anywhere along inner sidewall 66, such as a location aligned with attachment opening 72 as shown, or aligned with one or more necks 76, or at any other location. together with the inner side wall 66. Similarly, the second end 104 can be connected to the auxiliary leg 56 anywhere along the inner side wall 82, such as at a location aligned with an attachment opening 86 as shown, or alternatively aligned with a neck 88 or elsewhere along the inner sidewall 82.
    Support leg 100 may be tapered as shown by decreasing in width from the first end 102 to the middle portion 106 which is disposed between the first and second ends 102 and 104, and increasing in width from the middle portion 106 towards the second end 104. Alternatively, the support leg 100 can be a constant width from the first end 102 to the second end 104. The support leg 100 can extend substantially straight between the opposite outer ends 102 and 104, or they can be be substantially curved as desired. Furthermore, while the support leg 100 is devoid of permanent bone fastener receiving apertures, the support leg 100 may alternatively define permanent bone fastener receiving apertures of the type described with respect to the primary and secondary legs 54 and 56. .
    It should be appreciated that the support leg 100 adds stability to the bone attachment plate 52, and may allow the bone attachment plate 52 to be attached to the underlying bone structure using smaller numbers of fasteners 55 than the bone attachment plate 52. bone 52 which does not include support leg 100. As a result, as illustrated in Figure 6B, at least one or both of the distal end 60 of the primary leg 54 and the distal end 64 of the auxiliary leg 56 can be disposed at the intersection with the leg. support 100 such that one or both of the distal portions 61 and 65 do not extend beyond the respective outer ends 102 and 104 of the support plate, thus reducing the number of fixation openings 72 and 86 and simplifying the surgical fixation procedure .
    The embodiments described in connection with the illustrated embodiments have been presented by way of illustration, and the present invention, therefore, is not intended to be limited to the disclosed embodiments. For example, the bone fixation pad 52 is anatomically shaped to repair a fracture of the coronoid process 41 (see Figure 1B) in the manner described above with respect to the subcondylar region 22. Therefore, those skilled in the art will appreciate that the invention is intended to encompass all modifications and arrangements included in the spirit and scope of the invention as set forth by the appended claims.
    权利要求:
    Claims (23)
    [0001]
    1. Mandibular bone fixation plate (52) configured to be fixed to a mandible (20), the mandibular bone fixation plate (52) characterized in that it comprises: a primary leg (54) that is straight such that the primary leg generally corresponds in the form of a posterior edge (25) of a mandible (20); and an auxiliary leg (56) extending obliquely away from the primary leg (54), the auxiliary leg (56) including an auxiliary inner side wall (82) facing the primary leg (54), and an auxiliary outer side wall (84) ) which is opposite the inner sidewall, the auxiliary leg (56) being elongated along a curved central axis that is concave to the auxiliary outer sidewall, such that the auxiliary leg is curved and generally corresponds in shape to a notch sigmoid (31) of the mandible (20), the curved central axis (C) defining a radius of curvature between 10 mm and 30 mm.
    [0002]
    2. Mandibular bone fixation plate according to claim 1, characterized in that the primary leg (54) defines a proximal portion (59) adjacent to a proximal end (58) of the primary leg and a distal end (61) adjacent to a distal end (60) of the primary leg, and a length defined by the distance between the proximal end (58) and the distal end (60).
    [0003]
    3. Mandibular bone fixation plate, according to claim 2, characterized in that the length is from 20 mm to 45 mm.
    [0004]
    4. Mandibular bone fixation plate, according to claim 2, characterized in that the distal portion (61) is longer than the proximal portion (59).
    [0005]
    5. Mandibular bone fixation plate according to claim 2, characterized in that the primary leg (64) defines at least one bone fixation opening (72) extending through each of the proximal portion (59) and distal portion (61).
    [0006]
    6. Mandibular bone fixation plate according to claim 5, characterized in that the primary leg (54) defines a primary inner side wall (66) that faces the auxiliary leg (56), and a wall primary outer sidewall (68) opposite the primary inner sidewall (66), the primary inner and outer sidewalls extend between the proximal and distal ends (58, 60), and the auxiliary leg (56) extends outward. of the primary inner sidewall (66).
    [0007]
    7. Mandibular bone fixation plate according to claim 6, characterized in that the primary inner and outer side walls (66, 68) are arranged closer together at locations (76) between a pair adjacent bone attachment apertures (72) with respect to locations aligned with at least one of the bone attachment apertures (72).
    [0008]
    8. Mandibular bone fixation plate, according to claim 5, characterized in that the primary leg (54) still defines a first face that receives the fixators and a second face opposite the first face that faces the mandible when the bone fixation plate is fixed to the mandible.
    [0009]
    9. Mandibular bone fixation plate according to claim 5, characterized in that the openings (72) are cylindrical.
    [0010]
    10. Mandibular bone fixation plate according to claim 5, characterized in that the primary leg (54) still defines a midline region (74) that extends between the proximal and distal portions (59, 61). ).
    [0011]
    11. Mandibular bone fixation plate according to claim 10, characterized in that the midline region (74) is devoid of bone fixation openings, and extends over a fracture site (32) when the attachment plate (52) is attached to the jaw (20).
    [0012]
    12. Mandibular bone fixation plate according to claim 11, characterized in that the auxiliary leg (56) extends from the medial region (74) of the primary leg (54).
    [0013]
    13. Mandibular bone fixation plate, according to claim 6, characterized in that when the fixation plate (52) is fixed to the mandible (20), the primary inner lateral wall (66) is anterior in relative to the primary outer sidewall (68), and the auxiliary leg (56) extends anteriorly to the primary inner sidewall (66).
    [0014]
    14. Mandibular bone fixation plate according to claim 1, characterized in that the auxiliary leg (56) further defines a proximal end (62) and a distal end (64) opposite the proximal end (62). ), and the auxiliary leg (56) is attached to the primary leg (54) at the proximal end (62) of the auxiliary leg (56).
    [0015]
    15. Mandibular bone fixation plate according to claim 14, characterized in that the auxiliary leg (56) defines at least one bone fixation opening (86) configured to receive a fixator.
    [0016]
    16. Mandibular bone attachment plate according to claim 15, characterized in that the auxiliary leg (56) defines a pair of bone attachment apertures, and inner and outer side walls (82, 84). , and inner and outer side walls (82, 84) of the auxiliary leg (56) are disposed closer together at locations (88) between the pair of bone attachment apertures (86) relative to locations aligned with at least one of the bone attachment openings (86).
    [0017]
    17. Mandibular bone fixation plate according to claim 15, characterized in that the auxiliary leg (56) defines a proximal portion (63) disposed adjacent the proximal end (62) of the auxiliary leg (56). , and a distal portion (65) disposed adjacent the distal end (64) of the auxiliary leg (56), the at least one bone attachment opening (86) disposed within the distal portion (64), and the proximal portion (63) ) is devoid of bone attachment apertures and is configured to extend over a fracture when the bone attachment plate (52) is attached to the jaw (20).
    [0018]
    18. Mandibular bone fixation plate, according to claim 12, characterized in that it further comprises a support leg (100) connected to at least one of the primary leg (54) and the auxiliary leg (56). ) in a corresponding fixing location.
    [0019]
    19. Mandibular bone fixation plate according to claim 18, characterized in that at least one of the primary leg (54) and auxiliary leg (56) does not extend beyond the respective site of attachment. fixation.
    [0020]
    20. Kit including a plurality of bone attachment plates (52), characterized in that each bone attachment plate comprises: a primary leg (54) having a proximal end (58), an opposite distal end (60) , and a median region (74) extending between the proximal and distal ends (58, 60), the median region (74) configured to extend over a fracture site (32) when the attachment plate (52) is in place. attached to an underlying bone; and an auxiliary leg (56) that includes an auxiliary inner side wall (82) that faces the primary leg (54), and an auxiliary outer side wall (84) opposite the auxiliary inner side wall, the auxiliary leg (56) is extended along the along a curved central axis (C), the auxiliary leg (56) extending obliquely away from the primary leg (54); wherein the primary leg (54) is straight, such that the primary leg (54) generally corresponds shaped like a posterior edge of a mandible (20), and the curved central axis (C) of the auxiliary leg (56) is concave with respect to the auxiliary outer side wall (84) such that the curved central axis (C) generally corresponds shaped like a sigmoid notch (31) of the mandible (20), the curved central axis (C) defining a radius of curvature between 10 mm and 30 mm.
    [0021]
    21. Kit according to claim 20, characterized in that the plurality of bone attachment plates (52) comprises at least one left oriented bone attachment plate and at least one oriented bone attachment plate to the right which is symmetrical to the left oriented bone fixation plate.
    [0022]
    22. Mandibular bone fixation plate (52) configured to be fixed to a mandible (20), the mandibular bone fixation plate (52) characterized in that it comprises: a primary leg (54) defining a proximal portion ( 59), a distal portion (61) spaced from the proximal portion (59) in a distal direction, and a midline region (74) extending from the proximal portion (59) to the distal portion (61), the primary leg (54) ) further defining a first bone attachment aperture (72) and a second bone attachment aperture spaced from the first bone attachment aperture (72) in the distal direction, the first and second bone attachment apertures positioned each one within the proximal portion (59), the primary leg (54) defining a third bone attachment aperture and a fourth bone attachment aperture spaced from the third bone attachment aperture in the distal direction, the third and fourth apertures bone fixation devices positioned each within the distal end (61), such that the midline region (74) is positioned between the second and third bone attachment apertures and is devoid of any bone attachment aperture, the primary leg (54) including a primary inner side wall ( 66) and a primary outer sidewall (68) that is opposite the primary inner sidewall (66); and an auxiliary leg (56) including an auxiliary inner side wall (82) that faces the primary inner side wall (66), and an auxiliary outer side wall (84) opposite the auxiliary inner side wall (82), the auxiliary leg (56) ) extending outward from the primary leg (54) such that the primary and auxiliary inner walls (66, 82) intersect in the midline (74) of the primary leg (54), the auxiliary leg (56) being elongated along a curved central axis (C), the curved central axis (C) being concave with respect to the auxiliary outer sidewall (84), such that the auxiliary leg (56) is curved and generally corresponds in shape to a sigmoid notch (31) of the mandible (20).
    [0023]
    23. Mandibular bone fixation plate (52) configured to be fixed to a mandible (20), the mandibular bone fixation plate (52) characterized in that it comprises: a primary leg (54) that is elongated along of a primary central axis (LL), the primary leg (54) defining a proximal portion (59), a distal portion (61) spaced from the proximal portion (59) along the primary central axis in a distal direction, and a region median (74) extending from the proximal portion (59) to the distal portion (61), the primary leg (54) including an inner side wall (66) and an outer side wall (68) opposite the inner side wall (66) ), the primary leg (54) further defining first and second bone attachment openings (70) positioned within the proximal portion (59), such that the second opening is spaced from the first along the distal direction, and the leg primary (54) further defining at least one bone attachment opening (72) that extends through the distal portion (61), and the medial region (74) is devoid of bone attachment opening along the length; an auxiliary leg (56) that extends obliquely away from the inner side wall (66) of the primary leg (54) ) at a location in the midline region (74), the auxiliary leg (56) being elongated along a curved auxiliary central axis (C), the curved central axis (C) being convex with respect to the inner sidewall (66) such that the auxiliary leg (56) is curved and generally corresponds to a sigmoid notch (31) of the mandible (20); and a gap defined between the primary leg (54) and the auxiliary leg (56), the gap defining a width measured in a direction perpendicular to the primary central axis (LL), wherein the gap width at a first position is less than the width of the gap in a second position that is spaced from the first position in the distal direction.
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    WO2011072107A1|2011-06-16|
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    KR101788889B1|2017-11-15|
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    CN102724927A|2012-10-10|
    KR20120107955A|2012-10-04|
    WO2011072107A9|2013-04-11|
    CN102724927B|2015-12-16|
    EP2509524A1|2012-10-17|
    CA2781155A1|2011-06-16|
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    法律状态:
    2020-09-01| B15I| Others concerning applications: loss of priority|Free format text: PERDA DA PRIORIDADE US 61/285,781 REIVINDICADA NO PCT/US2010/059646, CONFORME AS DISPOSICOES PREVISTAS NA LEI 9.279 DE 14/05/1996 (LPI) ART. 167O E ART 2O DA RESOLUCAO INPI 179 DE 21/02/2017. ESTA PERDA SE DEU PELO FATO DE O DEPOSITANTE CONSTANTE DA PETICAO DE REQUERIMENTO DO PEDIDO PCT (SYNTHES GMBH) SER DISTINTO DAQUELES QUE DEPOSITARAM A PRIORIDADE REIVINDICADA E NAO APRESENTOU DOCUMENTO COMPROBATORIO DE CESSAO DENTRO DO PRAZO DE 60 DIAS A CONTAR DA DATA DA ENTRADA DA FASE NACIONAL, CONFORME AS DISPOSICOES PREVISTAS NA LEI 9.279 DE 14/05/1996 (LPI) ART. 166O, E NO ART. 28 DA RESOLUCAO INPI-PR 77/2013. |
    2020-09-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-12-01| B12F| Other appeals [chapter 12.6 patent gazette]|
    2021-07-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-11-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-11-23| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    2022-01-04| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 09/12/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |
    优先权:
    申请号 | 申请日 | 专利标题
    US28578109P| true| 2009-12-11|2009-12-11|
    US61/285.781|2009-12-11|
    PCT/US2010/059646|WO2011072107A1|2009-12-11|2010-12-09|Mandibular fixation plate|
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