JP7465982B2 - ネックトライアル、手術器具システムおよびネックトライアルの製造方法 - Google Patents
ネックトライアル、手術器具システムおよびネックトライアルの製造方法 Download PDFInfo
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- JP7465982B2 JP7465982B2 JP2022544535A JP2022544535A JP7465982B2 JP 7465982 B2 JP7465982 B2 JP 7465982B2 JP 2022544535 A JP2022544535 A JP 2022544535A JP 2022544535 A JP2022544535 A JP 2022544535A JP 7465982 B2 JP7465982 B2 JP 7465982B2
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- neck trial
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- 238000003780 insertion Methods 0.000 claims description 18
- 230000037431 insertion Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000000560 biocompatible material Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 210000000689 upper leg Anatomy 0.000 description 17
- 210000004394 hip joint Anatomy 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000001356 surgical procedure Methods 0.000 description 10
- 238000011541 total hip replacement Methods 0.000 description 9
- 210000000588 acetabulum Anatomy 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 5
- 210000004197 pelvis Anatomy 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011540 hip replacement Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
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Images
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
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Description
<人工股関節置換術用手術器具1の概要>
以下、本開示を実施するための形態について図面を参照しつつ説明する。図1は、本開示の一実施の形態に係る人工股関節置換術用手術器具1を用いて患者に設置された人工股関節100について、骨盤101及び大腿骨102の一部とともに示す断面図である。図1に示すように、人工股関節100は、ステム103と、骨頭ボール104と、臼蓋101Aに設置されたシェル105及びライナー106と、を備えて構成されている。ステム103、骨頭ボール104及びシェル105のそれぞれの材料としては、生体埋植用に医療機器としての認可承認を得たチタン合金、コバルトクロム合金、ステンレス鋼等の金属材料、ポリエチレン、PEEK等の高分子材料、アルミナ、およびジルコニア等のセラミックス材料を例示することができる。
以下、一実施形態に係るネックトライアル3を含む人工股関節置換術用手術器具1の使用方法について説明する。術者は、人工股関節置換術用手術器具1を用いることで、患者に人工股関節100を設置する下準備を行う。まず、図示しないボーンソー、骨用ドリル、骨用ノミ等の手術器具によって、患者の大腿骨頭を切除し、更に、大腿骨102の近位部102Cの髄腔部102Aに、ステムブローチ2を挿入するための下孔を形成する。
本開示の他の実施形態について、以下に説明する。なお、説明の便宜上、上記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を繰り返さない。図5は、別の実施形態に係るネックトライアル3Aを示す概略図である。図5の符号501に示す図は、ネックトライアル3Aを側面から見た状態を示す図であり、図5の符号502に示す図は、符号501に示す状態のネックトライアル3AをX軸方向から見た状態を示す図である。図6は、本実施形態に係るステムブローチ2Aを示す概略図である。図6の符号601に示す図は、ステムブローチ2Aを側面から見た状態を示す図である、図6の符号602に示す図は、符号601に示すステムブローチ2Aを図中のY2方向から見た図である。
2、2A ステムブローチ
3、3A ネックトライアル
24、24A 第1凹部
25 凸部
31 本体部
32 固定部
33 板バネ
34 突出部
35 保護部
36 挿入部
37 孔部
P 接触面
Claims (13)
- 本体部と、
前記本体部の接触面から突出し、前記本体部をステムブローチに固定可能な固定部とを備え、
前記固定部は、前記ステムブローチが有する第1凹部と係合する突出部を備える板バネを備え、
前記固定部と前記本体部とは、一体的に構成され、
前記ステムブローチに対して着脱可能であり、
他の物体との接触による前記固定部の損傷を防ぐための、前記本体部の前記接触面から突出した保護部を備え、
前記保護部は、
前記本体部から前記固定部が突出する方向において前記固定部よりも前記本体部から離れた位置まで突出し、
前記方向から前記固定部を見たとき、前記固定部のうち前記突出部以外の部分を覆う、ネックトライアル。 - 前記保護部は、前記固定部および前記本体部と一体的に構成されている、請求項1に記載のネックトライアル。
- 前記本体部は、前記ステムブローチが有する第2凹部に挿入され、前記ステムブローチに対する前記ネックトライアルの位置決めを行うための挿入部を備える、請求項1または2に記載のネックトライアル。
- 前記挿入部は、前記保護部、前記固定部および前記本体部と一体的に構成されている、請求項3に記載のネックトライアル。
- 前記本体部は、前記ステムブローチが有する凸部が挿入され、前記ステムブローチに対する前記ネックトライアルの位置決めを行うための孔部を備える、請求項1または2に記載のネックトライアル。
- 生体適合性を持つ、チタン合金、コバルトクロム合金、またはステンレス鋼のいずれかの材質で構成されている、請求項1から5のいずれか1項に記載のネックトライアル。
- 請求項1から6のいずれか1項に記載のネックトライアルと、
ステムブローチと、
ブローチハンドルと、を含み、
前記ネックトライアルと、前記ブローチハンドルとは、前記ステムブローチに対して択一的に固定可能である、手術器具システム。 - ボールトライアルを更に含む、請求項7に記載の手術器具システム。
- ネックトライアルの製造方法であって、
前記ネックトライアルは、
本体部と、
ステムブローチと前記本体部とが接する接触面から突出し、前記ネックトライアルと前記ステムブローチとを固定する固定部とを備え、
前記固定部が、前記ステムブローチに形成された第1凹部と係合する突出部を備える板バネからなっており、
前記ステムブローチに対して着脱可能であり、
他の物体との接触による前記固定部の損傷を防ぐための、前記本体部の前記接触面から突出した保護部を備え、
前記保護部は、
前記本体部から前記固定部が突出する方向において前記固定部よりも前記本体部から離れた位置まで突出し、
前記方向から前記固定部を見たとき、前記固定部のうち前記突出部以外の部分を覆っており、
前記本体部および前記固定部を一体的に形成する、ネックトライアルの製造方法。 - 前記保護部と、前記本体部と、前記固定部とを一体的に形成する、請求項9に記載のネックトライアルの製造方法。
- 前記固定部の形状を、ワイヤーカッターによる切断加工により形成する、請求項9または10に記載のネックトライアルの製造方法。
- 機械加工により、単一の金属素材を加工して、前記ネックトライアルを単一の部材として作製する工程を含む、請求項9から11のいずれか1項に記載のネックトライアルの製造方法。
- 金属の積層造形技術を用いて、前記ネックトライアルを単一の部材として作製する工程を含む、請求項9から11のいずれか1項に記載のネックトライアルの製造方法。
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