JP2017153831A - Component for osteosynthesis - Google Patents
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- JP2017153831A JP2017153831A JP2016041639A JP2016041639A JP2017153831A JP 2017153831 A JP2017153831 A JP 2017153831A JP 2016041639 A JP2016041639 A JP 2016041639A JP 2016041639 A JP2016041639 A JP 2016041639A JP 2017153831 A JP2017153831 A JP 2017153831A
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- 210000000988 bone and bone Anatomy 0.000 claims abstract description 105
- 208000006735 Periostitis Diseases 0.000 claims description 5
- 210000003460 periosteum Anatomy 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 4
- 241001465754 Metazoa Species 0.000 claims description 3
- 241000135309 Processus Species 0.000 claims 1
- 206010020649 Hyperkeratosis Diseases 0.000 abstract description 10
- 230000002401 inhibitory effect Effects 0.000 abstract description 4
- 206010017076 Fracture Diseases 0.000 description 47
- 208000010392 Bone Fractures Diseases 0.000 description 46
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- 238000002591 computed tomography Methods 0.000 description 4
- 241000282472 Canis lupus familiaris Species 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 3
- 230000010478 bone regeneration Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 230000003340 mental effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000017423 tissue regeneration Effects 0.000 description 1
Abstract
Description
本発明は、骨折部の修復に用いる接合用部品に関するものである。 The present invention relates to a joining component used for repairing a fractured part.
小動物の骨はφ５ｍｍ程度と細いものもあり、骨折治療で使用する骨接合用部品は、現状適合するものが少ない。そのため、従来は事前に複数の板状部品を準備し、その中から最も大きさ、形状の近い板状部品を選択して適用していた。 Some small animal bones are as thin as about φ5 mm, and there are few bone joining parts used in the treatment of fractures. For this reason, conventionally, a plurality of plate-like parts are prepared in advance, and a plate-like part having the closest size and shape is selected and applied.
しかしながら、従来方法では骨接合用部品を装着する場合、獣医師は、あらかじめ骨折部分のＣＴスキャン画像により骨の形状を確認すると共に、手術時に患部を視認することにより骨の形状を確認し、骨折部に適合するように手作業で板状部品を切断・屈曲等していたため、板状の骨接合用部品を精密に骨形状に添わせることが困難であった。また、取り付け時に骨と骨接合用部品には隙間が発生する為、治癒過程で接合部のズレや固定部品（スクリュー等）の抜けや緩みの原因となる。また、板状の骨接合用部品は短時間で加工を行なう必要が有り、獣医師の経験、熟練度が必要となる。さらに、骨折部の再生過程では仮骨が生成され、仮骨が元となり修復が進む。しかし、従来の骨接合用部品は板上の部品である為、骨折部やその近傍の骨表面と接触することから、骨折部と骨接合用部品が接触している部分には仮骨が生成され難くなり、健全な骨再生を阻害する要因となる。骨再生部分の骨組織生成を阻害せず、健全な骨再生が可能になる骨接合用部品が必要である。 However, in the conventional method, when the osteosynthesis component is mounted, the veterinarian confirms the shape of the bone in advance by a CT scan image of the fractured part, and also confirms the shape of the bone by visually confirming the affected part at the time of surgery. Since the plate-like component was manually cut and bent so as to fit the part, it was difficult to accurately add the plate-like osteosynthesis component to the bone shape. In addition, since a gap is generated between the bone and the osteosynthesis component at the time of attachment, it may cause a displacement of the junction and a disconnection or loosening of a fixing component (such as a screw) during the healing process. Moreover, it is necessary to process a plate-shaped osteosynthesis component in a short time, and veterinarian experience and skill are required. Furthermore, a callus is generated in the process of regenerating the fracture, and the repair proceeds based on the callus. However, since the conventional osteosynthesis parts are parts on the plate, they come into contact with the fractured part and the bone surface in the vicinity, so a temporary bone is generated at the part where the fractured part and the osteosynthesis part are in contact. It becomes difficult to be done and becomes a factor inhibiting healthy bone regeneration. There is a need for an osteosynthesis component that does not hinder the generation of bone tissue in the bone regeneration portion and enables healthy bone regeneration.
本発明は、容易に、十分に骨折部に仮骨を生成させ、健全に骨を再生させることを目的とする。 An object of the present invention is to easily generate a callus at a fracture portion sufficiently and to regenerate the bone soundly.
本発明の骨接合用部品は、動物の骨の骨折部を固定する骨接合用部品であって、前記骨折部を挟んで互いに前記骨の長さ方向に隣り合う位置で前記骨と沿う２つの本体部分と、前記骨折部と離間して前記骨折部をまたいだ構成で２つの前記本体部と接続される逃がし部分と、それぞれの前記本体部分に前記骨の周方向に設けられる１または複数の固定部とを有することを特徴とする。 An osteosynthesis component according to the present invention is an osteosynthesis component for fixing a fractured part of an animal bone, and includes two parts along the bone at positions adjacent to each other in the longitudinal direction of the bone across the fractured part. A main body part, a relief part connected to the two main body parts in a configuration that is separated from the fracture part and straddles the fracture part, and one or more provided in the circumferential direction of the bone in each of the main body parts And a fixing portion.
以上のように、骨接合用部品が骨折部に接触しない逃がし形状を備えることにより、骨接合用部品が骨に接触しないため仮骨の生成を阻害して骨折部の修復を遅延させることを抑制することができ、容易に、十分に骨折部に仮骨を生成させ、健全に骨を再生させることができる。 As described above, by providing a relief shape that does not contact the fractured part, the osteosynthesis part does not contact the bone, thus inhibiting the generation of callus and delaying the repair of the fractured part. It is possible to easily generate a callus at the fracture portion and to regenerate the bone soundly.
以下に、本発明の実施の形態について、図面を参照しながら説明する。
（実施の形態）
図１は、本発明の実施の形態における骨接合部品の全体図の例であり、正面図と側面図である。図２は骨接合部品の骨折部近傍の構成を例示する側面図、図３は骨接合部品の骨折部近傍の構成を例示する図２のＡ−Ａ’断面図である。
Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment)
FIG. 1 is an example of an overall view of an osteosynthesis component according to an embodiment of the present invention, and is a front view and a side view. 2 is a side view illustrating the configuration near the fractured portion of the osteosynthesis component, and FIG. 3 is a cross-sectional view taken along the line AA ′ of FIG. 2 illustrating the configuration near the fractured portion of the osteosynthesis component.
図１に示すように、骨折した骨１０１は、骨折部１０２で骨折することにより、完全にまたは部分的に上側の一方の骨１０１ａと下側の他方の骨１０１ｂとに分離されている。骨接合用部品２０１は、骨折部１０２をまたいで骨１０１ａと骨１０１ｂとを固定する。骨接合用部品２０１は骨１０１との接触面を有し、接触部は、骨折部１０２より上側の一方の骨１０１ａと下側の他方の骨１０１ｂとのそれぞれの長さ方向及び骨１０１の長さ方向に直交する径方向において骨表面形状に添っている。接触部は、骨１０１ａに接する１または複数の本体部２０１ｆと、骨１０１ｂに接する１または複数の本体部２０１ｇと、後述の固定部２０１ａ、２０１ｂ、２０１ｃ、２０１ｄとから構成される。骨表面形状は、例えば、Ｘ線ＣＴスキャン等で３Ｄデータとして取得される。なお、本体部２０１ｆと本体部２０１ｇとはそれぞれ複数の構成部分から構成されても良く、それぞれの構成部分には少なくとも１つの固定部が設けられる。 As shown in FIG. 1, the fractured bone 101 is completely or partially separated into one bone 101 a on the upper side and the other bone 101 b on the lower side by fracture at the fracture portion 102. The osteosynthesis component 201 fixes the bone 101a and the bone 101b across the fractured part 102. The osteosynthesis component 201 has a contact surface with the bone 101, and the contact portion is a longitudinal direction of one bone 101 a above the fracture portion 102 and the other bone 101 b below and the length of the bone 101. It follows the bone surface shape in the radial direction perpendicular to the vertical direction. The contact portion includes one or more main body portions 201f in contact with the bone 101a, one or more main body portions 201g in contact with the bone 101b, and fixing portions 201a, 201b, 201c, and 201d described later. The bone surface shape is acquired as 3D data by, for example, an X-ray CT scan. The main body portion 201f and the main body portion 201g may each be composed of a plurality of constituent parts, and at least one fixing part is provided in each constituent part.
さらに、本実施の形態における骨接合用部品２０１は、図１〜図３に示すように、骨折部１０２近傍の仮骨生成範囲１０１ｃに接触しない逃がし形状２０１ｅを有する。また、骨接合用部品２０１は、複数の固定部２０１ａ、２０１ｂ、２０１ｃ、２０１ｄを備える。固定部２０１ａ、２０１ｂ、２０１ｃ、２０１ｄは、骨１０１の長さ方向に直交する骨１０１の径方向において、骨１０１の円周の長さの少なくとも１／２以上の長さを有し、図３の断面に示す様に骨１０１をその周において抱き込む形状を有している。固定部２０１ａは骨１０１ａにおいて最も骨折部１０２から離れた位置に設けられ、固定部２０１ｂは骨１０１ａの固定部２０１ａより骨折部１０２に近い位置で、かつ骨折部１０２端部より少なくとも５ｍｍ以上離れた位置に設けられる。固定部２０１ｃは骨１０１ｂにおいて骨折部１０２端部より少なくとも５ｍｍ以上離れた位置に設けられ、固定部２０１ｄは固定部２０１ｃより骨折部１０２から遠い位置に設けられる。なお、固定部は、上記４点に限らず複数の位置に配置され、各々の骨１０１ａ，１０１ｂにおいて少なくとも２箇所で固定される。 Further, as shown in FIGS. 1 to 3, the osteosynthesis component 201 in the present embodiment has a relief shape 201 e that does not contact the callus generation range 101 c in the vicinity of the fracture 102. The osteosynthesis component 201 includes a plurality of fixing portions 201a, 201b, 201c, and 201d. The fixing portions 201a, 201b, 201c, and 201d have a length that is at least ½ or more of the circumferential length of the bone 101 in the radial direction of the bone 101 orthogonal to the length direction of the bone 101. As shown in the cross section, the bone 101 is held around the periphery. The fixing portion 201a is provided at a position farthest from the fracture portion 102 in the bone 101a, and the fixing portion 201b is closer to the fracture portion 102 than the fixing portion 201a of the bone 101a and at least 5 mm away from the end of the fracture portion 102 Provided in position. The fixing portion 201c is provided at a position at least 5 mm away from the end of the fracture portion 102 in the bone 101b, and the fixing portion 201d is provided at a position farther from the fracture portion 102 than the fixing portion 201c. In addition, a fixing | fixed part is arrange | positioned not only in the said 4 points | pieces but in several positions, and is fixed in at least two places in each bone | frame 101a, 101b.
以上のように、本発明の骨接合用部品２０１によれば、あらかじめ骨接合用部品２０１を骨折した骨１０１に沿う形状に形成することで骨１０１と骨接合用部品２０１との間に隙間が形成されることが抑制され、骨１０１と骨接合用部品２０１とがずれることを抑制できる。さらに骨接合用部品２０１は逃がし形状２０１ｅを有しているので、骨折部１０２の骨組織再生を阻害せず、より健全に骨折部１０２を整復、治癒させる事が可能になる。 As described above, according to the osteosynthesis component 201 of the present invention, a gap is formed between the bone 101 and the osteosynthesis component 201 by forming the osteosynthesis component 201 in a shape along the fractured bone 101 in advance. The formation is suppressed, and the bone 101 and the osteosynthesis component 201 can be prevented from shifting. Furthermore, since the osteosynthesis component 201 has the relief shape 201e, it is possible to reduce and heal the fracture 102 more soundly without inhibiting the bone tissue regeneration of the fracture 102.
図４は骨接合用部品の固定部２０１ａの断面図である。他の固定部２０１ｂ、２０１ｃ、２０１ｄの断面図も同様である。図５は固定部２０１ａの斜視図と内面形状を例示する拡大断面図である。他の固定部２０１ｂ、２０１ｃ、２０１ｄの内面形状の図も同様である。 FIG. 4 is a cross-sectional view of the fixing part 201a of the osteosynthesis component. The same applies to the cross-sectional views of the other fixing portions 201b, 201c, and 201d. FIG. 5 is a perspective view of the fixing portion 201a and an enlarged cross-sectional view illustrating the inner surface shape. The same applies to the drawings of the inner surface shapes of the other fixing portions 201b, 201c, and 201d.
図３〜図５に示すように、固定部２０１ａと骨１０１との接触面には微小な突起３０４が複数配置されている。骨１０１は骨膜３０２に被覆されており、この突起３０４は骨膜３０２の厚みに相当する３０μｍ以上、５０μｍ以下の高さを有し、骨接合用部品の固定時に骨接合用部品と骨１０１との保持力を向上させる。図５に示す微小な突起３０４の配置は任意であるが、長さ方向、径方向共に等間隔に配置もしくは千鳥配置とすることが好ましく、また、固定部２０１ａ、２０１ｂ、２０１ｃ、２０１ｄの径方向端部近傍３０５と円周方向の中央近傍３０６を密に配置することにより固定時の保持力が向上しより好ましい。 As shown in FIGS. 3 to 5, a plurality of minute protrusions 304 are arranged on the contact surface between the fixing portion 201 a and the bone 101. The bone 101 is covered with the periosteum 302, and the protrusion 304 has a height of 30 μm or more and 50 μm or less corresponding to the thickness of the periosteum 302, and the bone joining component and the bone 101 are fixed when the bone joining component is fixed. Improve holding power. Although the arrangement of the minute protrusions 304 shown in FIG. 5 is arbitrary, it is preferable to arrange them at equal intervals in both the length direction and the radial direction or a staggered arrangement, and the radial direction of the fixing portions 201a, 201b, 201c, 201d It is more preferable that the vicinity of the end 305 and the central vicinity 306 in the circumferential direction are densely arranged to improve the holding force at the time of fixing.
次に図６〜図９を用いて固定部を骨に固定する開口部開閉機構について説明する。図６は骨接合用部品の固定部に構成される開口部開閉機構の構成を例示する図であり、図７は固定部の構成例を示す斜視図である。図８は骨接合部品の取り付け前の状態を例示する図、図９は骨接合部品の取り付け後の状態を例示する図である。 Next, an opening / closing mechanism for fixing the fixing portion to the bone will be described with reference to FIGS. FIG. 6 is a diagram illustrating a configuration of an opening / closing mechanism configured in the fixing portion of the osteosynthesis component, and FIG. 7 is a perspective view illustrating a configuration example of the fixing portion. FIG. 8 is a diagram illustrating a state before the osteosynthesis component is attached, and FIG. 9 is a diagram illustrating a state after the osteosynthesis component is attached.
複数の固定部それぞれに構成される開口部開閉機構は、開閉機構用部品４０１と開閉機構用部品４０２とそれらを接合するボルト４０６と開閉機構側係合部４０３とで構成される。固定部２０１ａは側面に形成された穴である固定部側係合部４０４を備え、固定部側係合部４０４は開閉機構側係合部４０３に係合される。開口部開閉機構は、骨接合用部品を骨折部に取り付ける前に、固定部２０１ａに構成された固定部側係合部４０４に開閉機構側係合部４０３を係合させて固定部２０１ａに装着される。ここでは、固定部２０１ａを例に説明したが、固定部２０１ｂ、２０１ｃ、２０１ｄも同様の開口部開閉機構が設けられる。以下の説明でも同様である。 The opening opening / closing mechanism formed in each of the plurality of fixing portions includes an opening / closing mechanism component 401, an opening / closing mechanism component 402, a bolt 406 for joining them, and an opening / closing mechanism side engaging portion 403. The fixing portion 201 a includes a fixing portion side engaging portion 404 that is a hole formed in a side surface, and the fixing portion side engaging portion 404 is engaged with the opening / closing mechanism side engaging portion 403. The opening portion opening / closing mechanism is attached to the fixing portion 201a by engaging the opening / closing mechanism side engaging portion 403 with the fixing portion side engaging portion 404 formed in the fixing portion 201a before attaching the osteosynthesis component to the fracture portion. Is done. Although the fixing part 201a has been described as an example here, the fixing parts 201b, 201c, and 201d are also provided with the same opening / closing mechanism. The same applies to the following description.
このような開口部開閉機構を備える固定部２０１ａで骨接合用部品を骨１０１に固定する前段階では、図８に示すように、開口部開閉機構を装着した状態の固定部２０１ａは、ボルト４０６が緩められており、骨１０１の直径よりも広い開口部４０５を有している。固定部２０１ａは、元々骨１０１に沿う形状を有しており、開口部開閉機構を装着することにより、弾性変形して骨１０１の直径よりも広い開口を有する状態となる。その際、ボルト４０６を閉めることにより開閉機構用部品４０１および開閉機構用部品４０２は骨１０１側に閉まり、開口部４０５が骨１０１の直径よりも狭くなり、骨１０１に固定部２０１ａが固定される。そして、骨折部に取り付けられた後開口部開閉機構は取り外され、図９に示すように骨１０１に固定部２０１ａが添うことによって固定を行なう。このとき、突起３０４（図５参照）が骨１０１あるいは骨膜３０２（図４参照）に食い込むため、固定部２０１ａは骨１０１に強固に固定される。 In the previous stage of fixing the osteosynthesis component to the bone 101 with the fixing portion 201a having such an opening / closing mechanism, as shown in FIG. 8, the fixing portion 201a with the opening / closing mechanism attached is a bolt 406. And has an opening 405 that is wider than the diameter of the bone 101. The fixing portion 201a originally has a shape along the bone 101, and is elastically deformed to have an opening wider than the diameter of the bone 101 by mounting the opening opening / closing mechanism. At that time, by closing the bolt 406, the opening / closing mechanism part 401 and the opening / closing mechanism part 402 are closed to the bone 101 side, the opening 405 becomes narrower than the diameter of the bone 101, and the fixing part 201a is fixed to the bone 101. . Then, the rear opening / closing mechanism attached to the fracture portion is removed, and the fixation is performed by the fixing portion 201a being attached to the bone 101 as shown in FIG. At this time, since the protrusion 304 (see FIG. 5) bites into the bone 101 or the periosteum 302 (see FIG. 4), the fixing portion 201a is firmly fixed to the bone 101.
このように、さらに開口部開閉機構を備えることにより、スクリュー等を骨接合用部品に貫通させて骨に差し込み、骨接合用部品を骨に固定する必要がなくなるため、手術時に骨が破砕するリスクが低減され、獣医師の経験、熟練度に影響されず安定した手術が可能になる。さらには、手術工程の短縮が可能になり、獣医師、患者（犬、猫等）の精神的、身体的な負担を軽減できる。 In this way, since the opening / closing mechanism is further provided, there is no need to penetrate the osteosynthesis component into the bone and insert it into the bone, and it is not necessary to fix the osteosynthesis component to the bone. This makes it possible to perform stable surgery without being affected by the experience and skill level of the veterinarian. Furthermore, the operation process can be shortened, and the mental and physical burdens of veterinarians and patients (dogs, cats, etc.) can be reduced.
図１０，図１１は骨に対する固定部の位置関係を例示する図であり、骨接合用部品２０１に複数配置される固定部２０１ａ〜２０１ｄの長さ方向における位置を示す。各固定部は、骨接合用部品２０１により骨１０１が十分に固定されることが必要である。例えば固定部２０１ａが関節１０３近傍に配置されるとすると、図１０に示すように、固定部２０１ａは、骨折部の方向にずれないような位置に配置されることが好ましい。例えば、骨１０１の太さは骨の長さ方向において太くなったり細くなったりする。固定部２０１ａは、骨折部から離れるほど骨が細くなる位置に配置されることが好ましい。骨折部から離れる程骨１０１が細くなる位置に固定部２０１ａを設けることにより、固定部２０１ａは骨折部に近づく方向に移動しにくく骨折部から離れる方向に移動しやすくなる。同時に、固定部２０１ｂも骨折部端部近傍において骨折部端部側が細くなる位置に配置する。骨折部に近づく程骨１０１が細くなる位置に固定部２０１ｂを設けることにより、固定部２０１ｂは骨折部から離れる方向に移動しにくく骨折部に近づく方向に移動しやすくなる。このように、本体部２０１ｆの固定部２０１ａ，２０１ｂを互いに離れる方向に移動しやすい位置に配置することにより、固定部２０１ａ，２０１ｂのいずれか一方が他方から離れる方向に移動しようとしても、他方はその方向に移動しにくいため、固定部２０１ａ，２０１ｂが移動することは抑制され、固定部２０１ａ，２０１ｂにより、骨接合用部品２０１の本体部２０１ｆは骨１０１を強固に固定することができる。本体部２０１ｇ（図１参照）の固定部２０１ｃ，２０１ｄ（図１参照）においても同様の位置に配置することにより、本体部２０１ｇは骨１０１を強固に固定することができる。 FIGS. 10 and 11 are diagrams illustrating the positional relationship of the fixing portions with respect to the bones, and show the positions in the length direction of the fixing portions 201a to 201d arranged on the osteosynthesis component 201. FIG. Each fixing part needs to have the bone 101 sufficiently fixed by the osteosynthesis component 201. For example, if the fixing part 201a is arranged in the vicinity of the joint 103, as shown in FIG. 10, the fixing part 201a is preferably arranged at a position that does not shift in the direction of the fractured part. For example, the thickness of the bone 101 increases or decreases in the length direction of the bone. The fixing portion 201a is preferably arranged at a position where the bone becomes thinner as the distance from the fracture portion increases. By providing the fixing portion 201a at a position where the bone 101 becomes thinner as the distance from the fracture portion increases, the fixation portion 201a is less likely to move in the direction approaching the fracture portion, and more likely to move away from the fracture portion. At the same time, the fixing portion 201b is also arranged at a position where the fracture end portion side becomes narrow in the vicinity of the fracture portion end portion. By providing the fixing portion 201b at a position where the bone 101 becomes narrower as it gets closer to the fracture portion, the fixing portion 201b is less likely to move away from the fracture portion and more likely to move closer to the fracture portion. As described above, by arranging the fixing portions 201a and 201b of the main body portion 201f so as to easily move away from each other, even if one of the fixing portions 201a and 201b attempts to move away from the other, Since it is difficult to move in that direction, the movement of the fixing portions 201a and 201b is suppressed, and the main body portion 201f of the osteosynthesis component 201 can firmly fix the bone 101 by the fixing portions 201a and 201b. By disposing the fixing portions 201c and 201d (see FIG. 1) of the main body portion 201g (see FIG. 1) at the same position, the main body portion 201g can firmly fix the bone 101.
また、図１１に示すように、固定部２０１ａ〜２０１ｄの端部は骨１０１長さ方向と平行でなくても良く、骨１０１の長さ方向に対して傾いていても良い。固定部２０１ａ〜２０１ｄは関節方向、骨折部端部方向へのズレを抑制するように、端部にテーパー形状を設けても良い。 As shown in FIG. 11, the end portions of the fixing portions 201 a to 201 d may not be parallel to the length direction of the bone 101, and may be inclined with respect to the length direction of the bone 101. The fixing portions 201a to 201d may be provided with a tapered shape at the end portions so as to suppress displacement in the joint direction and the fracture end portion direction.
図１２は本発明における手術工程の概略フローを例示する図である。
骨折手術の際には、まず、患者（犬、猫等）の骨折部をＣＴスキャン等により撮影し、骨折部やその周辺の骨の形状等のデータを取得する（ｓｔｅｐ２０１）。次に、そのデータを用いて骨折部の状況を把握する（ｓｔｅｐ２０２）。さらにＣＴスキャン等で取得したデータを用いて骨表面形状のデータを抽出する（ｓｔｅｐ２０３）。次に、抽出したデータを用いて、骨表面形状を反映した骨接合用部品２０１を製作する（ｓｔｅｐ２０４）。その後、骨折部分の皮膚を切開し、骨折した骨の位置を修正して骨折部を整復する（ｓｔｅｐ２０５）。次に、ｓｔｅｐ２０４で製作した骨接合用部品を骨に取り付け、骨折部を固定する（ｓｔｅｐ２０６）。最後に、切開部を縫合して手術が完了する（ｓｔｅｐ２０７）。
FIG. 12 is a diagram illustrating a schematic flow of a surgical process in the present invention.
At the time of fracture surgery, first, a fracture portion of a patient (dog, cat, etc.) is imaged by CT scan or the like, and data such as the shape of the fracture portion and the surrounding bone is acquired (step 201). Next, the status of the fracture is grasped using the data (step 202). Further, bone surface shape data is extracted using data acquired by CT scan or the like (step 203). Next, the osteosynthesis component 201 reflecting the bone surface shape is manufactured using the extracted data (step 204). Thereafter, the skin of the fracture portion is incised, the position of the fractured bone is corrected, and the fracture portion is reduced (step 205). Next, the osteosynthesis part manufactured in step 204 is attached to the bone, and the fracture portion is fixed (step 206). Finally, the incision is sutured to complete the operation (step 207).
従来の骨折を治療する方法では、骨折部の周辺の骨の現状に最も近い板状接合部品の選択、骨の形状に合わせて手術中に手作業で行う板状接合部品の加工が必要であった。これに対し、本発明の骨接合用部品を用いた骨折を治療する方法では、骨接合用部品が骨表面形状に添う形状にあらかじめ形成されている為、前述した従来の２つの工程が不要になる。また、本発明の骨接合用部品を用いた場合、開閉機構を用いて骨接合用部品を骨に固定するため、従来の板状接合部品のように板状接合用部品を固定する為のスクリュー用の穴をあけたり、スクリューによる板状接合用部品の固定も不要になる。 Conventional methods for treating fractures require the selection of a plate-like joint component that is closest to the current state of the bone around the fracture, and the processing of the plate-like joint component that is performed manually during surgery according to the shape of the bone. It was. In contrast, in the method of treating a fracture using the osteosynthesis component of the present invention, the osteosynthesis component is formed in advance in a shape that conforms to the shape of the bone surface, so that the conventional two steps described above are unnecessary. Become. In addition, when using the osteosynthesis component of the present invention, a screw for fixing the plate-like joining component like a conventional plate-like joining component is used to fix the osteosynthesis component to the bone using an opening / closing mechanism. This eliminates the need for drilling holes and fixing plate-like joining parts with screws.
本発明の骨接合用部品を骨折治療に適用すると逃がし形状を備えることにより、骨接合用部品と骨や骨折部とが接触しないため、骨折部の治癒に必要な仮骨生成をせず、より健全な骨折部の治癒が可能になる。また、あらかじめ骨の形状に沿った骨接合用部品が作成されて骨折部に固定されるため、骨接合用部品のずれやゆるみが抑制され、骨折部の修復が遅延することが抑制される。また、骨接合用部品の固定にスクリュー等の固定用部品を使用しない為、手術中の骨破砕等のリスクが抑制でき、再手術のリスク低減が見込める。更には手術工程の短縮が実現でき、獣医師や患者（犬、猫等）の肉体的、精神的な負担を軽減できる。 When the osteosynthesis component of the present invention is applied to fracture treatment, it provides a relief shape so that the osteosynthesis component does not contact the bone or the fractured portion, and thus does not generate a temporary bone necessary for healing the fractured portion. A healthy fracture can be healed. In addition, since the osteosynthesis component along the shape of the bone is created in advance and fixed to the fracture portion, the displacement and loosening of the osteosynthesis component are suppressed, and the repair of the fracture portion is suppressed from being delayed. In addition, since fixing parts such as screws are not used to fix the osteosynthesis parts, the risk of bone fracture during surgery can be suppressed, and the risk of reoperation can be reduced. Furthermore, the operation process can be shortened, and the physical and mental burdens of veterinarians and patients (dogs, cats, etc.) can be reduced.
本発明は、容易に、十分に骨折部に仮骨を生成させ、健全に骨を再生させることができ、骨折部の修復に用いる接合用部品等に有用である。 INDUSTRIAL APPLICABILITY The present invention can easily generate a callus at a fractured part and regenerate the bone soundly, and is useful for a joining part used for repairing a fractured part.
１０１ 骨
１０１ａ 骨
１０１ｂ 骨
１０１ｃ 仮骨生成範囲
１０２ 骨折部
１０３ 間接
２０１ 骨接合用部品
２０１ａ〜２０１ｄ 固定部
２０１ｅ 逃がし形状
２０１ｆ 本体部
２０１ｇ 本体部
３０２ 骨膜
３０４ 突起
３０５ 径方向端部近傍
３０６ 中央近傍
４０１ 開閉用部品
４０２ 開閉用部品
４０３ 開閉機構側係合部
４０４ 固定部側係合部
４０５ 開口部
４０６ ボルト
101 Bone 101a Bone 101b Bone 101c Temporary bone generation range 102 Fracture part 103 Indirect 201 Osteosynthesis parts 201a-201d Fixing part 201e Relief shape 201f Main body part 201g Main body part 302 Periosteum 304 Protrusion 305 Radial end part vicinity 306 Center vicinity 401 Opening / closing Parts 402 Opening / Closing Parts 403 Opening / Closing Mechanism Side Engaging Portions 404 Fixed Portion Side Engaging Portions 405 Openings 406 Bolts
Claims (6)
前記骨折部を挟んで互いに前記骨の長さ方向に隣り合う位置で前記骨と沿う２つの本体部分と、
前記骨折部と離間して前記骨折部をまたいだ構成で２つの前記本体部と接続される逃がし部分と、
それぞれの前記本体部分に前記骨の周方向に設けられる１または複数の固定部と
を有することを特徴とする骨接合用部品。 An osteosynthesis component for fixing a fracture of an animal bone,
Two main body portions along the bone at positions adjacent to each other in the length direction of the bone across the fracture portion;
A relief portion connected to the two main body portions in a configuration that is separated from the fracture portion and straddles the fracture portion;
An osteosynthesis component comprising one or a plurality of fixing portions provided in the circumferential direction of the bone on each of the main body portions.
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| JP2019097842A (en) * | 2017-12-01 | 2019-06-24 | パナソニック株式会社 | Bone jointing component and bone jointing component formation method |
| JP2020089550A (en) * | 2018-12-05 | 2020-06-11 | Jsr株式会社 | Device for surgical operation, information processing device, system, information processing method, and program |
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| KR102546731B1 (en) * | 2020-09-25 | 2023-06-23 | 박보원 | Hybrid Type Fracture Fixation Device for Fracture Treatment |
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