WO2020202521A1 - Bone fixation plate - Google Patents

Bone fixation plate Download PDF

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Publication number
WO2020202521A1
WO2020202521A1 PCT/JP2019/014918 JP2019014918W WO2020202521A1 WO 2020202521 A1 WO2020202521 A1 WO 2020202521A1 JP 2019014918 W JP2019014918 W JP 2019014918W WO 2020202521 A1 WO2020202521 A1 WO 2020202521A1
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WO
WIPO (PCT)
Prior art keywords
region
bone
thin
longitudinal axis
bone fixation
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PCT/JP2019/014918
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French (fr)
Japanese (ja)
Inventor
真樹 新
宏一 黒田
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オリンパステルモバイオマテリアル株式会社
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Application filed by オリンパステルモバイオマテリアル株式会社 filed Critical オリンパステルモバイオマテリアル株式会社
Priority to JP2021511024A priority Critical patent/JP7284805B2/en
Priority to PCT/JP2019/014918 priority patent/WO2020202521A1/en
Priority to TW108113052A priority patent/TWI779186B/en
Publication of WO2020202521A1 publication Critical patent/WO2020202521A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates

Definitions

  • the present invention relates to a bone fixation plate.
  • plates for fracture treatment are known (see, for example, Patent Document 1).
  • the plate is placed on the surface of the bone so as to straddle the fracture site and is fixed to the bone by a screw.
  • the shape of the plate for fracture treatment matches the bone shape of the application site. Since the bone shape differs from patient to patient, it is necessary for the surgeon to confirm the bone shape of the patient and adjust the shape of the plate so as to match the bone shape during the operation. However, it is not easy to bend a plate having the strength required to support the bone to fit the bone shape of each patient.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bone fixation plate that can be easily adjusted to a shape that matches the bone shape.
  • One aspect of the present invention is a bone fixing plate composed of a plate-shaped member having a longitudinal axis and having a plurality of insertion holes into which screws are inserted, and one end side having one or more of the insertion holes.
  • a first thin wall provided between one region, a second region on the other end side having two or more insertion holes, and the first region and the second region, and thinner than the edge portion surrounding the insertion hole.
  • a second thin-walled region provided between the two or more insertion holes of the second region and thinner than the edge portion is provided, and the dimension of the first thin-walled region in the longitudinal axis direction is the first. 2
  • a bone fixing plate in which the cross section of the first thin-walled region is uniform in the longitudinal axis direction, unlike the dimension of the thin-walled region in the longitudinal axis direction.
  • FIG. 1 It is a top view of the bone fixation plate which concerns on one Embodiment of this invention. It is a side view of the bone fixation plate of FIG. It is a vertical cross-sectional view of the bone fixation plate of FIG. 1 along the line I-I. It is an enlarged view of the region III including the insertion hole of FIG. It is a cross-sectional view of the bone fixation plate of FIG. 1 in line II-II. It is a figure which shows one use example of the bone fixation plate of FIG. It is a top view of the bone fixation plate which concerns on other embodiment of this invention. It is a top view of the bone fixation plate which concerns on other embodiment of this invention.
  • the bone fixation plate 1 is a plate-shaped member having a linear longitudinal axis A.
  • the bone fixation plate 1 is T-shaped in a plan view in the thickness direction, and has a first region 1A on one end side extending linearly along a short axis B orthogonal to the longitudinal axis A and a longitudinal axis. It has a second region 1B on the other end side extending linearly along A.
  • the length direction is the direction parallel to the longitudinal axis A
  • the width direction is the direction parallel to the minor axis B
  • the thickness direction is orthogonal to the longitudinal axis A and the minor axis B. It is the plate thickness direction.
  • the length, width, and thickness are dimensions in the length direction, the width direction, and the thickness direction, respectively.
  • the first region 1A protrudes on both sides in the width direction from the second region 1B, and the width of the first region 1A is larger than the width of the second region 1B. Further, the length of the first region 1A is smaller than the length of the second region 1B.
  • the bone fixation plate 1 is provided with a plurality of insertion holes 2 penetrating in the thickness direction, and each insertion hole 2 is surrounded by an annular edge portion 3.
  • a screw S for fixing the bone fixing plate 1 to the bone is inserted into each insertion hole 2 (see FIG. 6).
  • the screw S is a locking screw having a thread on the outer peripheral surface of the head.
  • the insertion hole 2 is a female screw to which the head of the screw S is fastened.
  • the first region 1A has one or more insertion holes 2, and the second region 1B has two or more insertion holes 2.
  • the first region 1A has two insertion holes 2 and the second region 1B has three insertion holes 2.
  • the number of insertion holes 2 in the first region 1A may be only one or three or more.
  • the number of insertion holes 2 in the second region 1B may be only two or four or more.
  • the two insertion holes 2 of the first region 1A are arranged in the width direction and are offset from the longitudinal axis A in the width direction in opposite directions. All the insertion holes 2 in the second region 1B are arranged in a row on the longitudinal axis A at intervals from each other in the length direction.
  • the bone fixation plate 1 has a first thin-walled region 4 and a second thin-walled region 5.
  • the first thin-walled region 4 is provided between the first region 1A and the second region 1B.
  • One end of the first thin-walled region 4 is connected to the edge 3 of the two insertion holes 2 of the first region 1A, and the other end of the first thin-walled region 4 is the insertion hole 2 on the most end side of the second region 1B. It is connected to the edge 3.
  • the second thin-walled region 5 is provided between the insertion holes 2 of the second region 1B, and both ends of each of the second thin-walled regions 5 are connected to the edge portion 3.
  • the length of the first thin-walled region 4 is larger than the length of the second thin-walled region 5.
  • each of the first thin-walled region 4 and the second thin-walled region 5 is smaller than the thickness of the edge portion 3, and the thickness of each thin-walled region 4 and 5 and the edge portion 3 A step in the thickness direction is formed between them. Therefore, each of the first thin-walled region 4 and the second thin-walled region 5 has lower rigidity than the edge portion 3, and the rigidity is discontinuous between each of the thin-walled regions 4 and 5 and the edge portion 3. It's changing.
  • both ends of the edge portion 3 in the width direction are chamfered, and the thickness of the edge portion 3 means the thickness of the portion excluding the chamfered portion and the groove 9 (described later).
  • each of the first thin-walled region 4 and the second thin-walled region 5 is smaller than the width of the edge portion 3 of the second thin-walled region 1B.
  • the cross section of the first thin-walled region 4 orthogonal to the longitudinal axis A is uniform in the substantially overall length in the length direction, and therefore the rigidity of the first thin-walled region 4 is constant in the length direction.
  • a recess 6 is formed in which a recessed guide pin P is fitted in the radial direction inward in the longitudinal direction.
  • the bone fixing plate 1 can be temporarily positioned with respect to the guide pin P and the bone.
  • At least one of the first region 1A and the second region 1B may be provided with a guide hole 11 penetrating in the thickness direction into which the guide pin P is inserted.
  • the bone fixation plate 1 has a pair of surfaces 7 and 8 facing each other in the thickness direction. As shown in FIGS. 5 and 6, one surface 7 is an inner surface arranged on the bone side and the other surface 8 is an outer surface arranged on the side opposite to the bone. As shown in FIG. 5, a groove 9 extending along the longitudinal axis A and recessing in the thickness direction is formed on the inner side surface 7. When the bone fixation plate 1 is placed on the curved surface of the bone X, the inner surface 7 contacts the bone X at both ends of the groove 9 and a gap is secured between the inner surface of the groove 9 and the surface of the bone X. Will be done.
  • FIG. 6 shows an example of using the bone fixation plate 1 for high tibial osteotomy (HTO).
  • HTO high tibial osteotomy
  • two incisions are formed in a direction inclined with respect to the longitudinal axis of tibia X from the elevated lateral surface of tibia X to the medial side, and bone fragments between the two incisions are removed using a predetermined instrument. ..
  • the hinge portion H is formed on the inner surface side of the excision site of the bone fragment, and the epiphysis X1 above the excision site can swing with respect to the diaphysis X2 about the hinge portion H.
  • the guide pin P which serves as a guide for the position of the bone fixation plate 1 with respect to the tibia X, is inserted into the epiphysis X1 from the inside.
  • the first region 1A and the second region 1B are arranged on the inner side surfaces of the epiphysis X1 and the diaphysis X2, respectively, and the bone fixation plate 1 is abutted against the guide pin P in the recess 6 to provide the bone fixation plate 1.
  • the position of the guide pin P with respect to the epiphysis X1 is set so that the first thin-walled region 4 is arranged at the hinge portion H. In this state, the difference between the shape of the bone fixation plate 1 and the shape of the tibia X is confirmed.
  • the bone fixing plate 1 is curved in the first thin-walled region 4 and the second thin-walled region 5, so that the shape of the bone fixing plate 1 is adjusted to match the shape of the inner surface of the tibia X.
  • a dedicated bender is used for bending the bone fixing plate 1.
  • the first region 1A and the second region 1B are arranged on the inner side surfaces of the epiphysis X1 and the diaphysis X2, respectively, and the bone fixing plate 1 is abutted against the guide pin P in the recess 6 to fix the bone fixing plate. 1 is positioned with respect to the epiphysis X1 and the diaphysis X2.
  • the screw S is screwed into the epiphysis X1 via the insertion hole 2 of the first region 1A, and the screw S is screwed into the diaphysis X2 via the insertion hole 2 of the second region 1B.
  • Each screw S is screwed into the bones X1 and X2 until the head is fastened into the insertion hole 2.
  • the epiphysis X1 and the epiphysis plate 1 fixed to the epiphysis X2 on both the upper and lower sides of the hinge portion H restrict the swing of the epiphysis X1 with respect to the diaphysis X2 around the epiphysis H, and the position of the epiphysis X1 with respect to the diaphysis X2. Is stable.
  • a wedge-shaped artificial bone C is inserted into the gap between the dilated cut surfaces Y, and another bone fixation plate 30 is placed on the outer surfaces of the epiphysis X1 and the diaphysis X2 so as to straddle the cut surface Y. Then, the other bone fixing plate 30 is fixed to the epiphysis X1 and the diaphysis X2 by the screw S.
  • the bone fixing plate 1 according to the present embodiment is provided with thin-walled regions 4 and 5 which are thinner and less rigid than the edge portion 3 at a plurality of locations in the length direction. Therefore, the bone fixing plate 1 can be selectively and easily deformed in the thin-walled regions 4 and 5 while preventing the insertion hole 2 from being deformed. Thereby, the shape of the bone fixing plate 1 can be easily adjusted without affecting the fixing force of the bone fixing plate 1 to the bone.
  • the insertion hole 2 is not required in the portion between the first region 1A and the second region 1B arranged in the hinge portion H.
  • the bone fixing plate 1 comes into contact with the bone X at two points in the width direction, and a gap is formed between the surface of the bone X and the inner surface of the groove 9. Secured.
  • the contact area of the inner side surface 7 with the bone X is reduced, the influence of the bone fixing plate 1 on the blood vessels on the surface of the bone X is reduced, and the position and posture of the bone fixing plate 1 with respect to the bone X are stabilized. be able to.
  • the recess 6 formed at one end of the bone fixing plate 1 and the guide pin P can be used to easily position the bone fixing plate 1 with respect to the bone X.
  • the screw S by using a locking screw that is fastened to the insertion hole 2 as the screw S, it is possible to prevent the screw S from moving in the direction of coming out of the bone X after fixing the bone fixing plate 1 to the bone X by the screw S. , The fixing force of the bone fixing plate 1 with respect to the bone X can be maintained.
  • the two insertion holes 2 of the first region 1A arranged at the epiphysis X1 are arranged in the width direction. As a result, the length of the first region 1A can be reduced to the same level as the width of the edge portion 3, and the first region 1A can be firmly fixed to the epiphysis X1 by using two screws S.
  • Such a short first region 1A is particularly suitable for application to the short epiphysis X1.
  • the bone fixing plate 10 of FIG. 7 is Y-shaped in a plan view in the thickness direction.
  • the first region 10A has a V-shape having two portions inclined with respect to the longitudinal axis A, and protrudes from the second region 10B on both sides in the width direction.
  • the second region 10B is configured in the same manner as the second region 1B.
  • the two insertion holes 2 of the first region 10A are offset from the longitudinal axis A in the width direction and in opposite directions to each other.
  • a thin-walled region 51 similar to the second thin-walled region 5 is provided between each insertion hole 2 of the first region 1A and the first thin-walled region 4.
  • the bone fixing plate 20 of FIG. 8 is I-shaped in a plan view in the thickness direction. Specifically, the first region 20A and the second region 20B extend linearly along the longitudinal axis A, and all the insertion holes 2 of the first region 20A and the second region 20B are aligned along the longitudinal axis A. It is arranged in. A thin-walled region 52 similar to the second thin-walled region 5 is provided between the two insertion holes 2 of the first region 20A.
  • the bone fixing plates 10 and 20 also have a recess 6 formed on one end side surface and a groove 9 formed on the inner side surface 7.
  • the above-mentioned HTO is only an example of how to use the bone fixation plates 1, 10 and 20, and the bone fixation plates 1, 10 and 20 can be used for other parts and other uses.
  • the shape and dimensions of the bone fixation plates 1, 10 and 20 and the number of insertion holes 2 can be changed according to the application site and application.
  • the bone fixation plates 1, 10 and 20 may be fixed to the lateral surface of the tibia X in the same manner as the other bone fixation plates 30.
  • the bone fixation plates 1, 10 and 20 may be applied to bones at other sites such as the femur or clavicle. Bone fixation plates 1, 10 and 20 may be used for the treatment of bone fractures at any site.
  • the length of the first thin-walled region 4 may be smaller than the length of the second thin-walled region 5.
  • the two insertion holes 2 of the first regions 1A and 10A are offset on both sides in the width direction from the longitudinal axis A, but the arrangement of the insertion holes 2 in the first region is the same.
  • a part or all of the insertion hole 2 in the first region may be offset to both sides or one side in the width direction from the longitudinal axis A.
  • the outline shape of the bone fixation plate in the plan view may be changed according to the arrangement of the insertion holes 2 in the first region.
  • the insertion hole 2 in the first region may be offset to one side in the width direction from the longitudinal axis A.
  • Bone fixation plates 1A, 10A, 20A 1st region 1B, 10B, 20B 2nd region 2 Insertion hole 3 Edge 4 1st thin region 5 2nd thin region 6 Recess 7 Inner side surface 8 Outer side surface 9 Groove A Longitudinal axis B Short axis X Tibia X1 Epiphysis X2 Diaphysis Y Cut surface H Hinge part S Screw P Guide pin C Artificial bone

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Abstract

This bone fixation plate (1) is provided with: a first region (1A) which is situated on one end side and has one or more insertion holes (2); a second region (1B) which is situated on the other end side and has two or more insertion holes (2); a first thin region (4) which is disposed between the first and second regions (1A, 1B) and is thinner than each of rim parts (3) respectively surrounding the insertion holes (2); and second thin regions (5) which are disposed between the insertion holes (2) in the second region (1B) and are thinner than the rim parts (3), wherein the first thin region (4) has a longitudinal axis dimension different from that of each of the second thin regions (5), and the first thin region (4) has a cross section that is uniform in the longitudinal axis direction.

Description

骨固定用プレートBone fixation plate
 本発明は、骨固定用プレートに関するものである。 The present invention relates to a bone fixation plate.
 従来、骨折治療用のプレートが知られている(例えば、特許文献1参照。)。プレートは、骨折部位を跨ぐように骨の表面上に配置され、スクリュによって骨に固定される。 Conventionally, plates for fracture treatment are known (see, for example, Patent Document 1). The plate is placed on the surface of the bone so as to straddle the fracture site and is fixed to the bone by a screw.
特開2015-167779号公報JP 2015-167779
 骨折治療用のプレートの形状は、適用部位の骨形状に合うことが望ましい。骨形状は患者毎に異なるため、手術中に、術者が、患者の骨形状を確認し、骨形状に合うようにプレートの形状を調整する作業が必要となる。しかしながら、骨を支えるために必要な強度を有するプレートを各患者の骨形状に合うように曲げる作業は容易ではない。 It is desirable that the shape of the plate for fracture treatment matches the bone shape of the application site. Since the bone shape differs from patient to patient, it is necessary for the surgeon to confirm the bone shape of the patient and adjust the shape of the plate so as to match the bone shape during the operation. However, it is not easy to bend a plate having the strength required to support the bone to fit the bone shape of each patient.
 本発明は、上述した事情に鑑みてなされたものであって、骨形状に合う形状に容易に調整することができる骨固定用プレートを提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bone fixation plate that can be easily adjusted to a shape that matches the bone shape.
 本発明の一態様は、長手軸を有する板状の部材からなり、スクリュがそれぞれ挿入される複数の挿入孔を有する骨固定用プレートであって、1以上の前記挿入孔を有する一端側の第1領域と、2以上の前記挿入孔を有する他端側の第2領域と、前記第1領域と前記第2領域との間に設けられ、前記挿入孔を囲む縁部よりも薄い第1薄肉領域と、前記第2領域の前記2以上の挿入孔間に設けられ、前記縁部よりも薄い第2薄肉領域と、を備え、前記第1薄肉領域の前記長手軸方向の寸法が、前記第2薄肉領域の前記長手軸方向の寸法とは異なり、前記第1薄肉領域の横断面が、前記長手軸方向において均一である、骨固定用プレートである。 One aspect of the present invention is a bone fixing plate composed of a plate-shaped member having a longitudinal axis and having a plurality of insertion holes into which screws are inserted, and one end side having one or more of the insertion holes. A first thin wall provided between one region, a second region on the other end side having two or more insertion holes, and the first region and the second region, and thinner than the edge portion surrounding the insertion hole. A second thin-walled region provided between the two or more insertion holes of the second region and thinner than the edge portion is provided, and the dimension of the first thin-walled region in the longitudinal axis direction is the first. 2 A bone fixing plate in which the cross section of the first thin-walled region is uniform in the longitudinal axis direction, unlike the dimension of the thin-walled region in the longitudinal axis direction.
 本発明によれば、骨形状に合う形状に容易に調整することができるという効果を奏する。 According to the present invention, there is an effect that the shape can be easily adjusted to match the bone shape.
本発明の一実施形態に係る骨固定用プレートの平面図である。It is a top view of the bone fixation plate which concerns on one Embodiment of this invention. 図1の骨固定用プレートの側面図である。It is a side view of the bone fixation plate of FIG. 図1の骨固定用プレートのI-I線における縦断面図である。It is a vertical cross-sectional view of the bone fixation plate of FIG. 1 along the line I-I. 図3の挿入孔を含む領域IIIの拡大図である。It is an enlarged view of the region III including the insertion hole of FIG. 図1の骨固定用プレートのII-II線における横断面図である。It is a cross-sectional view of the bone fixation plate of FIG. 1 in line II-II. 図1の骨固定用プレートの一使用例を示す図である。It is a figure which shows one use example of the bone fixation plate of FIG. 本発明の他の実施形態に係る骨固定用プレートの平面図である。It is a top view of the bone fixation plate which concerns on other embodiment of this invention. 本発明の他の実施形態に係る骨固定用プレートの平面図である。It is a top view of the bone fixation plate which concerns on other embodiment of this invention.
 以下に、本発明の一実施形態に係る骨固定用プレート1について図面を参照して説明する。
 骨固定用プレート1は、図1および図2に示されるように、直線状の長手軸Aを有する板状の部材である。骨固定用プレート1は、厚さ方向に見た平面視においてT字型であり、長手軸Aに直交する短手軸Bに沿って直線状に延びる一端側の第1領域1Aと、長手軸Aに沿って直線状に延びる他端側の第2領域1Bと、を有する。
 以下の説明において、長さ方向は、長手軸Aに平行な方向であり、幅方向は、短手軸Bに平行な方向であり、厚さ方向は、長手軸Aおよび短手軸Bに直交する板厚方向である。また、長さ、幅、および厚さはそれぞれ、長さ方向、幅方向および厚さ方向の寸法である。
The bone fixation plate 1 according to the embodiment of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the bone fixation plate 1 is a plate-shaped member having a linear longitudinal axis A. The bone fixation plate 1 is T-shaped in a plan view in the thickness direction, and has a first region 1A on one end side extending linearly along a short axis B orthogonal to the longitudinal axis A and a longitudinal axis. It has a second region 1B on the other end side extending linearly along A.
In the following description, the length direction is the direction parallel to the longitudinal axis A, the width direction is the direction parallel to the minor axis B, and the thickness direction is orthogonal to the longitudinal axis A and the minor axis B. It is the plate thickness direction. Further, the length, width, and thickness are dimensions in the length direction, the width direction, and the thickness direction, respectively.
 第1領域1Aは、第2領域1Bよりも幅方向の両側に突出し、第1領域1Aの幅は第2領域1Bよりの幅よりも大きい。また、第1領域1Aの長さは、第2領域1Bの長さよりも小さい。 The first region 1A protrudes on both sides in the width direction from the second region 1B, and the width of the first region 1A is larger than the width of the second region 1B. Further, the length of the first region 1A is smaller than the length of the second region 1B.
 図1および図3に示されるように、骨固定用プレート1は、厚さ方向にそれぞれ貫通する複数の挿入孔2を備え、各挿入孔2は環状の縁部3によって囲まれている。各挿入孔2には、骨固定用プレート1を骨に固定するためのスクリュSが挿入される(図6参照。)。スクリュSは、頭部の外周面にねじ山を有するロッキングスクリュである。図4に示されるように、挿入孔2は、スクリュSの頭部が締結する雌ねじである。 As shown in FIGS. 1 and 3, the bone fixation plate 1 is provided with a plurality of insertion holes 2 penetrating in the thickness direction, and each insertion hole 2 is surrounded by an annular edge portion 3. A screw S for fixing the bone fixing plate 1 to the bone is inserted into each insertion hole 2 (see FIG. 6). The screw S is a locking screw having a thread on the outer peripheral surface of the head. As shown in FIG. 4, the insertion hole 2 is a female screw to which the head of the screw S is fastened.
 第1領域1Aは、1つ以上の挿入孔2を有し、第2領域1Bは、2つ以上の挿入孔2を有する。参照する図面では、第1領域1Aは2つの挿入孔2を有し、第2領域1Bは3つの挿入孔2を有する。第1領域1Aの挿入孔2の数は、1つのみ、または、3つ以上であってもよい。第2領域1Bの挿入孔2の数は、2つのみ、または、4つ以上であってもよい。
 第1領域1Aの2つの挿入孔2は、幅方向に配列し、長手軸Aから幅方向に相互に反対方向にオフセットしている。第2領域1Bの全ての挿入孔2は、長さ方向に相互に間隔を置いて長手軸A上に一列に配列している。
The first region 1A has one or more insertion holes 2, and the second region 1B has two or more insertion holes 2. In the reference drawing, the first region 1A has two insertion holes 2 and the second region 1B has three insertion holes 2. The number of insertion holes 2 in the first region 1A may be only one or three or more. The number of insertion holes 2 in the second region 1B may be only two or four or more.
The two insertion holes 2 of the first region 1A are arranged in the width direction and are offset from the longitudinal axis A in the width direction in opposite directions. All the insertion holes 2 in the second region 1B are arranged in a row on the longitudinal axis A at intervals from each other in the length direction.
 骨固定用プレート1は、第1薄肉領域4と、第2薄肉領域5と、を有する。
 第1薄肉領域4は、第1領域1Aと第2領域1Bとの間に設けられている。第1薄肉領域4の一端は、第1領域1Aの2つの挿入孔2の縁部3と接続され、第1薄肉領域4の他端は、第2領域1Bの最も一端側の挿入孔2の縁部3と接続されている。
 第2薄肉領域5は、第2領域1Bの挿入孔2間に設けられ、各第2薄肉領域5の両端は縁部3と接続されている。
 第1薄肉領域4の長さは、第2薄肉領域5の長さよりも大きくなっている。
The bone fixation plate 1 has a first thin-walled region 4 and a second thin-walled region 5.
The first thin-walled region 4 is provided between the first region 1A and the second region 1B. One end of the first thin-walled region 4 is connected to the edge 3 of the two insertion holes 2 of the first region 1A, and the other end of the first thin-walled region 4 is the insertion hole 2 on the most end side of the second region 1B. It is connected to the edge 3.
The second thin-walled region 5 is provided between the insertion holes 2 of the second region 1B, and both ends of each of the second thin-walled regions 5 are connected to the edge portion 3.
The length of the first thin-walled region 4 is larger than the length of the second thin-walled region 5.
 図2および図3に示されるように、第1薄肉領域4および第2薄肉領域5の各々の厚さは、縁部3の厚さよりも小さく、各薄肉領域4,5と縁部3との間には厚さ方向の段差が形成されている。したがって、第1薄肉領域4および第2薄肉領域5の各々は、縁部3に比べて低い剛性を有し、かつ、各薄肉領域4,5と縁部3との間で剛性が不連続に変化している。なお、参照する図面において、縁部3の幅方向の両端部は面取りされており、縁部3の厚さとは、面取り部分と溝9(後述)とを除く部分の厚さを意味する。
 また、第1薄肉領域4および第2薄肉領域5の各々の幅は、第2領域1Bの縁部3の幅よりも小さい。
 また、第1薄肉領域4の長手軸Aに直交する横断面は、長さ方向の略全長において均一であり、したがって、第1薄肉領域4の剛性は、長さ方向において一定である。
As shown in FIGS. 2 and 3, the thickness of each of the first thin-walled region 4 and the second thin-walled region 5 is smaller than the thickness of the edge portion 3, and the thickness of each thin- walled region 4 and 5 and the edge portion 3 A step in the thickness direction is formed between them. Therefore, each of the first thin-walled region 4 and the second thin-walled region 5 has lower rigidity than the edge portion 3, and the rigidity is discontinuous between each of the thin- walled regions 4 and 5 and the edge portion 3. It's changing. In the drawings to be referred to, both ends of the edge portion 3 in the width direction are chamfered, and the thickness of the edge portion 3 means the thickness of the portion excluding the chamfered portion and the groove 9 (described later).
Further, the width of each of the first thin-walled region 4 and the second thin-walled region 5 is smaller than the width of the edge portion 3 of the second thin-walled region 1B.
Further, the cross section of the first thin-walled region 4 orthogonal to the longitudinal axis A is uniform in the substantially overall length in the length direction, and therefore the rigidity of the first thin-walled region 4 is constant in the length direction.
 骨固定用プレート1の一端の側面には、長さ方向内方に凹みガイドピンPが径方向に嵌る凹部6が形成されている。骨に挿入されたガイドピンPに凹部6をあてがうことによって、ガイドピンPおよび骨に対して骨固定用プレート1を一時的に位置決めすることができる。
 第1領域1Aおよび第2領域1Bの少なくとも一方に、厚さ方向に貫通しガイドピンPが挿入されるガイド孔11が設けられていてもよい。
On the side surface of one end of the bone fixing plate 1, a recess 6 is formed in which a recessed guide pin P is fitted in the radial direction inward in the longitudinal direction. By applying the recess 6 to the guide pin P inserted into the bone, the bone fixing plate 1 can be temporarily positioned with respect to the guide pin P and the bone.
At least one of the first region 1A and the second region 1B may be provided with a guide hole 11 penetrating in the thickness direction into which the guide pin P is inserted.
 骨固定用プレート1は、厚さ方向に対向する一対の面7,8を有する。図5および図6に示されるように、一方の面7は、骨側に配置される内側面であり、他方の面8は、骨とは反対側に配置される外側面である。図5に示されるように、内側面7には、長手軸Aに沿って延び厚さ方向に凹む溝9が形成されている。骨固定用プレート1を骨Xの湾曲する表面に配置したときに、内側面7は、溝9の両端において骨Xと接触し、溝9の内面と骨Xの表面との間に隙間が確保される。 The bone fixation plate 1 has a pair of surfaces 7 and 8 facing each other in the thickness direction. As shown in FIGS. 5 and 6, one surface 7 is an inner surface arranged on the bone side and the other surface 8 is an outer surface arranged on the side opposite to the bone. As shown in FIG. 5, a groove 9 extending along the longitudinal axis A and recessing in the thickness direction is formed on the inner side surface 7. When the bone fixation plate 1 is placed on the curved surface of the bone X, the inner surface 7 contacts the bone X at both ends of the groove 9 and a gap is secured between the inner surface of the groove 9 and the surface of the bone X. Will be done.
 次に、骨固定用プレート1の使用方法の一例について説明する。
 骨固定用プレート1は、骨切り術または骨折治療に使用される。図6は、骨固定用プレート1を高位脛骨骨切り術(HTO)に使用する例を示している。
 HTOにおいて、脛骨Xの高位外側面から内側に向かって、脛骨Xの長手軸に対して傾斜する方向に2つの切り込みを形成し、2つの切り込み間の骨片を所定の器具を用いて除去する。この状態において、骨片の切除部位の内側面側にヒンジ部Hが形成され、切除部位の上側の骨端X1は、ヒンジ部Hを中心に骨幹X2に対して揺動することができる。
Next, an example of how to use the bone fixation plate 1 will be described.
The bone fixation plate 1 is used for osteotomy or fracture treatment. FIG. 6 shows an example of using the bone fixation plate 1 for high tibial osteotomy (HTO).
In the HTO, two incisions are formed in a direction inclined with respect to the longitudinal axis of tibia X from the elevated lateral surface of tibia X to the medial side, and bone fragments between the two incisions are removed using a predetermined instrument. .. In this state, the hinge portion H is formed on the inner surface side of the excision site of the bone fragment, and the epiphysis X1 above the excision site can swing with respect to the diaphysis X2 about the hinge portion H.
 次に、脛骨Xに対する骨固定用プレート1の位置の目安となるガイドピンPを、骨端X1に内側から挿入する。次に、第1領域1Aおよび第2領域1Bを骨端X1および骨幹X2の内側面にそれぞれ配置し、凹部6において骨固定用プレート1をガイドピンPに突き当てることによって骨固定用プレート1を骨端X1および骨幹X2に対して位置決めする。第1薄肉領域4がヒンジ部Hに配置されるように、骨端X1に対するガイドピンPの位置は設定されている。この状態において、骨固定用プレート1の形状と脛骨Xの形状との差を確認する。 Next, the guide pin P, which serves as a guide for the position of the bone fixation plate 1 with respect to the tibia X, is inserted into the epiphysis X1 from the inside. Next, the first region 1A and the second region 1B are arranged on the inner side surfaces of the epiphysis X1 and the diaphysis X2, respectively, and the bone fixation plate 1 is abutted against the guide pin P in the recess 6 to provide the bone fixation plate 1. Positioning with respect to epiphysis X1 and diaphysis X2. The position of the guide pin P with respect to the epiphysis X1 is set so that the first thin-walled region 4 is arranged at the hinge portion H. In this state, the difference between the shape of the bone fixation plate 1 and the shape of the tibia X is confirmed.
 次に、骨固定用プレート1を第1薄肉領域4および第2薄肉領域5において湾曲させることによって、骨固定用プレート1の形状を脛骨Xの内側面の形状に合うように調整する。骨固定用プレート1の湾曲には、例えば、専用のベンダーが使用される。
 次に、再び、第1領域1Aおよび第2領域1Bを骨端X1および骨幹X2の内側面にそれぞれ配置し、凹部6において骨固定用プレート1をガイドピンPに突き当てることによって骨固定用プレート1を骨端X1および骨幹X2に対して位置決めする。
Next, the bone fixing plate 1 is curved in the first thin-walled region 4 and the second thin-walled region 5, so that the shape of the bone fixing plate 1 is adjusted to match the shape of the inner surface of the tibia X. For example, a dedicated bender is used for bending the bone fixing plate 1.
Next, again, the first region 1A and the second region 1B are arranged on the inner side surfaces of the epiphysis X1 and the diaphysis X2, respectively, and the bone fixing plate 1 is abutted against the guide pin P in the recess 6 to fix the bone fixing plate. 1 is positioned with respect to the epiphysis X1 and the diaphysis X2.
 次に、第1領域1Aの挿入孔2内を経由してスクリュSを骨端X1にねじ込み、第2領域1Bの挿入孔2内を経由してスクリュSを骨幹X2にねじ込む。各スクリュSは、頭部が挿入孔2内に締結されるまで、骨X1,X2にねじ込まれる。ヒンジ部Hの上下両側において骨端X1および骨幹X2に固定された骨固定用プレート1によって、骨幹X2に対する骨端X1のヒンジ部H回りの揺動が制限され、骨幹X2に対する骨端X1の位置が安定する。 Next, the screw S is screwed into the epiphysis X1 via the insertion hole 2 of the first region 1A, and the screw S is screwed into the diaphysis X2 via the insertion hole 2 of the second region 1B. Each screw S is screwed into the bones X1 and X2 until the head is fastened into the insertion hole 2. The epiphysis X1 and the epiphysis plate 1 fixed to the epiphysis X2 on both the upper and lower sides of the hinge portion H restrict the swing of the epiphysis X1 with respect to the diaphysis X2 around the epiphysis H, and the position of the epiphysis X1 with respect to the diaphysis X2. Is stable.
 次に、開大された切断面Y間の隙間に楔形状の人工骨Cを挿入し、切断面Yを跨ぐように骨端X1および骨幹X2の外側面に他の骨固定用プレート30を配置し、他の骨固定用プレート30を骨端X1および骨幹X2にスクリュSによって固定する。 Next, a wedge-shaped artificial bone C is inserted into the gap between the dilated cut surfaces Y, and another bone fixation plate 30 is placed on the outer surfaces of the epiphysis X1 and the diaphysis X2 so as to straddle the cut surface Y. Then, the other bone fixing plate 30 is fixed to the epiphysis X1 and the diaphysis X2 by the screw S.
 骨固定用プレート1の骨への高い固定力を得るためには、スクリュSの頭部と挿入孔2との間の高い固定力が必要である。そのためには、挿入孔2の縁部3は高い強度を有する必要がある。また、挿入孔2の変形および損傷はスクリュSと挿入孔2との間の固定力の低下を招くため、挿入孔2の変形および損傷を防ぐ必要がある。 In order to obtain a high fixing force of the bone fixing plate 1 to the bone, a high fixing force between the head of the screw S and the insertion hole 2 is required. For that purpose, the edge 3 of the insertion hole 2 needs to have high strength. Further, since the deformation and damage of the insertion hole 2 causes a decrease in the fixing force between the screw S and the insertion hole 2, it is necessary to prevent the deformation and damage of the insertion hole 2.
 本実施形態に係る骨固定用プレート1には、縁部3よりも薄く剛性が低い薄肉領域4,5が、長さ方向の複数個所に設けられている。したがって、挿入孔2の変形を防止しながら、骨固定用プレート1を薄肉領域4,5において選択的にかつ容易に変形させることができる。これにより、骨固定用プレート1の骨への固定力に影響を与えることなく、骨固定用プレート1の形状を容易に調整することができる。 The bone fixing plate 1 according to the present embodiment is provided with thin- walled regions 4 and 5 which are thinner and less rigid than the edge portion 3 at a plurality of locations in the length direction. Therefore, the bone fixing plate 1 can be selectively and easily deformed in the thin- walled regions 4 and 5 while preventing the insertion hole 2 from being deformed. Thereby, the shape of the bone fixing plate 1 can be easily adjusted without affecting the fixing force of the bone fixing plate 1 to the bone.
 また、ヒンジ部Hに配置される第1領域1Aと第2領域1Bとの間の部分には、挿入孔2が不要である。このような部分に、均一な横断面を有する長い第1薄肉領域4を設けることによって、骨固定用プレート1の変形の自由度を効果的に向上することができる。すなわち、第1薄肉領域4を長さ方向の任意の位置で任意の形状に容易に曲げたりねじったりすることができる。したがって、骨固定用プレート1を個々の患者の骨形状に応じた形状に容易に調整することができる。 Further, the insertion hole 2 is not required in the portion between the first region 1A and the second region 1B arranged in the hinge portion H. By providing the long first thin-walled region 4 having a uniform cross section in such a portion, the degree of freedom of deformation of the bone fixing plate 1 can be effectively improved. That is, the first thin-walled region 4 can be easily bent or twisted into an arbitrary shape at an arbitrary position in the length direction. Therefore, the bone fixation plate 1 can be easily adjusted to a shape according to the bone shape of each patient.
 また、内側面7に溝9が形成されていることによって、骨固定用プレート1は、幅方向の2点において骨Xと接触し、骨Xの表面と溝9の内面との間に隙間が確保される。これにより、内側面7の骨Xとの接触面積を減らし骨固定用プレート1が骨Xの表面の血管に与える影響を低減しつつ、骨Xに対する骨固定用プレート1の位置および姿勢を安定させることができる。
 また、骨固定用プレート1の一端に形成された凹部6とガイドピンPとを利用して、骨Xに対する骨固定用プレート1の位置決めを簡単に行うことができる。
Further, since the groove 9 is formed on the inner surface 7, the bone fixing plate 1 comes into contact with the bone X at two points in the width direction, and a gap is formed between the surface of the bone X and the inner surface of the groove 9. Secured. As a result, the contact area of the inner side surface 7 with the bone X is reduced, the influence of the bone fixing plate 1 on the blood vessels on the surface of the bone X is reduced, and the position and posture of the bone fixing plate 1 with respect to the bone X are stabilized. be able to.
Further, the recess 6 formed at one end of the bone fixing plate 1 and the guide pin P can be used to easily position the bone fixing plate 1 with respect to the bone X.
 また、スクリュSとして、挿入孔2と締結するロッキングスクリュを使用することによって、骨固定用プレート1をスクリュSによって骨Xに固定した後にスクリュSが骨Xから抜ける方向に移動することを防止し、骨Xに対する骨固定用プレート1の固定力を維持することができる。
 また、骨端X1に配置される第1領域1Aの2つの挿入孔2は、幅方向に配列している。これにより、第1領域1Aの長さを縁部3の幅と同等まで低減しつつ、2本のスクリュSを用いて第1領域1Aを骨端X1に強固に固定することができる。このような短い第1領域1Aは、短い骨端X1への適用に特に適している。
Further, by using a locking screw that is fastened to the insertion hole 2 as the screw S, it is possible to prevent the screw S from moving in the direction of coming out of the bone X after fixing the bone fixing plate 1 to the bone X by the screw S. , The fixing force of the bone fixing plate 1 with respect to the bone X can be maintained.
Further, the two insertion holes 2 of the first region 1A arranged at the epiphysis X1 are arranged in the width direction. As a result, the length of the first region 1A can be reduced to the same level as the width of the edge portion 3, and the first region 1A can be firmly fixed to the epiphysis X1 by using two screws S. Such a short first region 1A is particularly suitable for application to the short epiphysis X1.
 上記実施形態において、T字型の骨固定用プレート1について説明したが、骨固定用プレート1の形状は適宜変更可能である。図7および図8は、骨固定用プレート1の変形例を示している。
 図7の骨固定用プレート10は、厚さ方向に見た平面視においてY字型である。具体的には、第1領域10Aは、長手軸Aに対して傾斜する2つの部分を有するV字状であり、第2領域10Bよりも幅方向の両側に突出している。第2領域10Bは、第2領域1Bと同様に構成されている。第1領域10Aの2つの挿入孔2は、長手軸Aから幅方向に相互に反対方向にオフセットしている。第1領域1Aの各挿入孔2と第1薄肉領域4との間に、第2薄肉領域5と同様の薄肉領域51が設けられている。
Although the T-shaped bone fixation plate 1 has been described in the above embodiment, the shape of the bone fixation plate 1 can be changed as appropriate. 7 and 8 show a modified example of the bone fixation plate 1.
The bone fixing plate 10 of FIG. 7 is Y-shaped in a plan view in the thickness direction. Specifically, the first region 10A has a V-shape having two portions inclined with respect to the longitudinal axis A, and protrudes from the second region 10B on both sides in the width direction. The second region 10B is configured in the same manner as the second region 1B. The two insertion holes 2 of the first region 10A are offset from the longitudinal axis A in the width direction and in opposite directions to each other. A thin-walled region 51 similar to the second thin-walled region 5 is provided between each insertion hole 2 of the first region 1A and the first thin-walled region 4.
 図8の骨固定用プレート20は、厚さ方向に見た平面視においてI字型である。具体的には、第1領域20Aおよび第2領域20Bは長手軸Aに沿って直線状に延び、第1領域20Aおよび第2領域20Bの全ての挿入孔2が、長手軸Aに沿って一列に配列している。第1領域20Aの2つの挿入孔2の間に、第2薄肉領域5と同様の薄肉領域52が設けられている。
 骨固定用プレート10,20も、一端の側面に形成された凹部6と、内側面7に形成された溝9と、を有する。
The bone fixing plate 20 of FIG. 8 is I-shaped in a plan view in the thickness direction. Specifically, the first region 20A and the second region 20B extend linearly along the longitudinal axis A, and all the insertion holes 2 of the first region 20A and the second region 20B are aligned along the longitudinal axis A. It is arranged in. A thin-walled region 52 similar to the second thin-walled region 5 is provided between the two insertion holes 2 of the first region 20A.
The bone fixing plates 10 and 20 also have a recess 6 formed on one end side surface and a groove 9 formed on the inner side surface 7.
 なお、上述のHTOは、骨固定用プレート1,10,20の使用方法の一例に過ぎず、骨固定用プレート1,10,20は、他の部位および他の用途に使用することができる。適用部位および用途に応じて、骨固定用プレート1,10,20の形状および寸法、ならびに、挿入孔2の数は変更可能である。 The above-mentioned HTO is only an example of how to use the bone fixation plates 1, 10 and 20, and the bone fixation plates 1, 10 and 20 can be used for other parts and other uses. The shape and dimensions of the bone fixation plates 1, 10 and 20 and the number of insertion holes 2 can be changed according to the application site and application.
 例えば、骨固定用プレート1,10,20は、他の骨固定用プレート30と同様に、脛骨Xの外側面に固定されてもよい。あるいは、骨固定用プレート1,10,20は、大腿骨または鎖骨等の他の部位の骨に適用されてもよい。
 骨固定用プレート1,10,20は、任意の部位の骨の骨折の治療に使用されてもよい。
 適用部位および用途に応じて、第1薄肉領域4の長さが、第2薄肉領域5の長さよりも小さくてもよい。
 また、図1および図7において、第1領域1A,10Aの2つ挿入孔2が、長手軸Aから幅方向の両側にオフセットしているが、第1領域の挿入孔2の配置はこれに限定されるものではなく、第1領域の挿入孔2の一部または全部が、長手軸Aから幅方向の両側または一側にオフセットしていてもよい。第1領域の挿入孔2の配置に応じて、平面視における骨固定用プレートの概形を変更してもよい。例えば、平面視においてL字型の骨固定用プレートの場合、第1領域の挿入孔2が、長手軸Aから幅方向の一側にオフセットしていてもよい。
For example, the bone fixation plates 1, 10 and 20 may be fixed to the lateral surface of the tibia X in the same manner as the other bone fixation plates 30. Alternatively, the bone fixation plates 1, 10 and 20 may be applied to bones at other sites such as the femur or clavicle.
Bone fixation plates 1, 10 and 20 may be used for the treatment of bone fractures at any site.
Depending on the application site and application, the length of the first thin-walled region 4 may be smaller than the length of the second thin-walled region 5.
Further, in FIGS. 1 and 7, the two insertion holes 2 of the first regions 1A and 10A are offset on both sides in the width direction from the longitudinal axis A, but the arrangement of the insertion holes 2 in the first region is the same. Without limitation, a part or all of the insertion hole 2 in the first region may be offset to both sides or one side in the width direction from the longitudinal axis A. The outline shape of the bone fixation plate in the plan view may be changed according to the arrangement of the insertion holes 2 in the first region. For example, in the case of an L-shaped bone fixing plate in a plan view, the insertion hole 2 in the first region may be offset to one side in the width direction from the longitudinal axis A.
1,10,20 骨固定用プレート
1A,10A,20A 第1領域
1B,10B,20B 第2領域
2 挿入孔
3 縁部
4 第1薄肉領域
5 第2薄肉領域
6 凹部
7 内側面
8 外側面
9 溝
A 長手軸
B 短手軸
X 脛骨
X1 骨端
X2 骨幹
Y 切断面
H ヒンジ部
S スクリュ
P ガイドピン
C 人工骨
1,10,20 Bone fixation plates 1A, 10A, 20A 1st region 1B, 10B, 20B 2nd region 2 Insertion hole 3 Edge 4 1st thin region 5 2nd thin region 6 Recess 7 Inner side surface 8 Outer side surface 9 Groove A Longitudinal axis B Short axis X Tibia X1 Epiphysis X2 Diaphysis Y Cut surface H Hinge part S Screw P Guide pin C Artificial bone

Claims (7)

  1.  長手軸を有する板状の部材からなり、スクリュがそれぞれ挿入される複数の挿入孔を有する骨固定用プレートであって、
     1以上の前記挿入孔を有する一端側の第1領域と、
     2以上の前記挿入孔を有する他端側の第2領域と、
     前記第1領域と前記第2領域との間に設けられ、前記挿入孔を囲む縁部よりも薄い第1薄肉領域と、
     前記第2領域の前記2以上の挿入孔間に設けられ、前記縁部よりも薄い第2薄肉領域と、
    を備え、
     前記第1薄肉領域の前記長手軸方向の寸法が、前記第2薄肉領域の前記長手軸方向の寸法とは異なり、
     前記第1薄肉領域の横断面が、前記長手軸方向において均一である、骨固定用プレート。
    A bone fixation plate consisting of a plate-shaped member having a longitudinal axis and having a plurality of insertion holes into which screws are inserted.
    A first region on one end side having one or more of the insertion holes,
    A second region on the other end side having two or more of the insertion holes,
    A first thin-walled region provided between the first region and the second region and thinner than the edge surrounding the insertion hole,
    A second thin-walled region provided between the two or more insertion holes in the second region and thinner than the edge portion,
    With
    The dimension of the first thin-walled region in the longitudinal axis direction is different from the dimension of the second thin-walled region in the longitudinal axis direction.
    A bone fixation plate having a uniform cross section of the first thin-walled region in the longitudinal axis direction.
  2.  前記第2領域の全ての前記挿入孔が、前記長手軸上に一列に配列する、請求項1に記載の骨固定用プレート。 The bone fixation plate according to claim 1, wherein all the insertion holes in the second region are arranged in a row on the longitudinal axis.
  3.  前記第1領域の前記挿入孔が、前記長手軸から該長手軸に直交する幅方向にオフセットしている、請求項2に記載の骨固定用プレート。 The bone fixation plate according to claim 2, wherein the insertion hole in the first region is offset from the longitudinal axis in the width direction orthogonal to the longitudinal axis.
  4.  前記第1領域の全ての前記挿入孔が、前記長手軸上に一列に配列する、請求項2に記載の骨固定用プレート。 The bone fixation plate according to claim 2, wherein all the insertion holes in the first region are arranged in a row on the longitudinal axis.
  5.  前記第1領域が、骨端に配置され、
     前記第2領域が、骨幹に配置される、請求項1から請求項4のいずれかに記載の骨固定用プレート。
    The first region is located at the epiphysis and
    The bone fixation plate according to any one of claims 1 to 4, wherein the second region is arranged on the diaphysis.
  6.  板厚方向に対向する2つの面の一方に、前記長手軸に沿って延びる溝が形成されている、請求項1から請求項5のいずれかに記載の骨固定用プレート。 The bone fixing plate according to any one of claims 1 to 5, wherein a groove extending along the longitudinal axis is formed on one of two surfaces facing each other in the plate thickness direction.
  7.  前記一端の側面に、前記長手軸方向内方に凹み、ガイドピンが径方向に嵌る凹部が形成されている、請求項1から請求項6のいずれかに記載の骨固定用プレート。 The bone fixing plate according to any one of claims 1 to 6, wherein a recess is formed on the side surface of the one end inward in the longitudinal axis direction and a recess in which the guide pin fits in the radial direction is formed.
PCT/JP2019/014918 2019-04-04 2019-04-04 Bone fixation plate WO2020202521A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013244130A (en) * 2012-05-25 2013-12-09 Kyocera Medical Corp Skull plate
WO2017195307A1 (en) * 2016-05-11 2017-11-16 オリンパステルモバイオマテリアル株式会社 Bone plate and bone plate system
JP2018512968A (en) * 2015-04-23 2018-05-24 アキュームド・エルエルシー System for deforming plate members on bone

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108420520B (en) * 2018-04-08 2024-04-09 苏州市康力骨科器械有限公司 Minimally invasive locking guide bone fracture plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013244130A (en) * 2012-05-25 2013-12-09 Kyocera Medical Corp Skull plate
JP2018512968A (en) * 2015-04-23 2018-05-24 アキュームド・エルエルシー System for deforming plate members on bone
WO2017195307A1 (en) * 2016-05-11 2017-11-16 オリンパステルモバイオマテリアル株式会社 Bone plate and bone plate system

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