JP6768704B2 - 人工関節の緩衝変化の制御方法 - Google Patents
人工関節の緩衝変化の制御方法 Download PDFInfo
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- JP6768704B2 JP6768704B2 JP2017555550A JP2017555550A JP6768704B2 JP 6768704 B2 JP6768704 B2 JP 6768704B2 JP 2017555550 A JP2017555550 A JP 2017555550A JP 2017555550 A JP2017555550 A JP 2017555550A JP 6768704 B2 JP6768704 B2 JP 6768704B2
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- 210000002683 foot Anatomy 0.000 claims description 26
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- 210000003414 extremity Anatomy 0.000 claims description 17
- 210000003141 lower extremity Anatomy 0.000 claims description 6
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Description
式中、dは0.4〜0.6、特に0.5
長さLB、脚弦LCの向きΦB、及び、場合によって、それらの値の時間導関数を知ることを通して、立脚期ロール・オフ運動を立脚期屈曲又は立脚期伸展から独立して追跡し知識を得ることができる。脚弦向き又は脚弦角度ΦBの変化により、運動の進行は立脚期でも遊脚期でも追跡でき、それらの値は立脚期動作及び/又は遊脚期動作を緩衝装置設定の調整により制御するために考慮され得る。
平面歩行の勾配k1は斜面下りの勾配k2よりかなり大きい。曲線aによる平面歩行において、大腿角度ΦTの変化が脚弦角度ΦBの変化に実質的に応じ、勾配はほぼ1であるのに対し、斜面下りの大腿角度ΦTがほぼ一定である。従って、斜面下りの勾配k2はかなり小さくなる。階段下りにおいて、脚弦角度ΦBの減少が大腿角度ΦTの減少よりかなり小さい。従って、階段下りの勾配k3は負の値になる。
以下に、出願当初の特許請求の範囲に記載の事項を、そのまま、付記しておく。
[1]下肢の矯正器具、外骨格又は義肢の人工膝関節において抵抗変化を制御する方法であって、前記人工膝関節は旋回軸線(4)を中心として旋回可能に相互に締結された上部(1)と下部(2)とを有し、前記人工膝関節の屈曲又は伸展に対する抵抗を提供するために、前記上部(1)と前記下部(2)との間に抵抗部(6)が締結され、前記抵抗部(6)には調整器(7)が設けられ、前記調整器(7)に設けられた制御装置(8)のセンサー信号が前記調整器(7)を稼働する場合に、前記調整器(7)により抵抗が変化させられる方法において、前記抵抗が、測定若しくは算出された脚弦(L C )の姿勢(Φ B )及び/又は長さ(L B )、並びに/又はそれらの時間導関数に応じて変化させられることを特徴とする、方法。
[2]前記脚弦(L C )として股回転中心(H R )と足点(F P )との接続線が使用されることを特徴とする、[1]に記載の方法。
[3]前記脚弦(L C )の前記姿勢(Φ B )が、下腿角度(Φ S )と膝角度(Φ K )の一部との合計として推定され、又は前記下腿角度(Φ S )、前記膝角度(Φ K )、大腿セグメント長(L T )、及び下腿セグメント長(L S )から算出されることを特徴とする、[1]又は[2]に記載の方法。
[4]下腿角度(Φ S )又は大腿角度(Φ T )が、慣性角度センサー(9)により直接測定され、又は大腿(1、10)若しくは下腿(2、5)に取り付けられた位置センサー(9)、及び膝角度センサー(9)により検出されることを特徴とする、[1]〜[3]の何れか一項に記載の方法。
[5]前記脚弦(L C )の前記長さ(L B )が、膝角度(Φ K )、大腿セグメント長(L T )、及び下腿セグメント長(L S )から決定されることを特徴とする、[1]〜[4]の何れか一項に記載の方法。
[6]前記抵抗が、前記前記脚弦(L C )の前記姿勢(Φ B )及び/又は前記長さ(L B )の変化の方向に応じて変化させられることを特徴とする、[1]〜[5]の何れか一項に記載の方法。
[7]前記脚弦の姿勢(Φ B )の変化と大腿角度(Φ T )又は下腿角度(Φ S )の変化との商(k)が算出され、歩行状況の評価のために使用されることを特徴とする、[1]〜[6]の何れか一項に記載の方法。
[8]脚弦速度の変化と大腿速度(Φ T )又は下腿速度(Φ S )の変化との商(k)が算出され、歩行状況の評価のために使用されることを特徴とする、[1]〜[7]の何れか一項に記載の方法。
[9]立脚期又は立脚状態を検出するために、前記下部(2)における力を検出する力センサー(9)が使用されることを特徴とする、[1]〜[8]の何れか一項に記載の方法。
[10]前記抵抗が、更に、前記上部(1)及び/又は前記下部(2)の姿勢又は姿勢の変化に応じて変化させられることを特徴とする、[1]〜[9]の何れか一項に記載の方法。
[11]前記抵抗が、特に前記脚弦(L C )の前記姿勢及び/又は前記姿勢の変化が設定境界値を越えた、又は下回ったときに変化させられることを特徴とする、[1]〜[10]の何れか一項に記載の方法。
Claims (10)
- 下肢の矯正器具、外骨格又は義肢の人工膝関節において抵抗変化を制御する方法であって、前記人工膝関節は旋回軸線(4)を中心として旋回可能に相互に締結された上部(1)と下部(2)とを有し、前記人工膝関節の屈曲又は伸展に対する抵抗を提供するために、前記上部(1)と前記下部(2)との間に抵抗部(6)が締結され、前記抵抗部(6)には調整器(7)が設けられ、前記調整器(7)に設けられた制御装置(8)のセンサー信号が前記調整器(7)を稼働する場合に、前記調整器(7)により抵抗が変化させられる方法において、前記抵抗が、測定若しくは算出された脚弦(LC)の姿勢(ΦB)及び/又は長さ(LB)、並びに/又はそれらの時間導関数に応じて変化させられ、
前記脚弦(L C )として股回転中心(H R )と足点(F P )との接続線が使用されることを特徴とする、方法。 - 前記脚弦(LC)の前記姿勢(ΦB)が、下腿角度(ΦS)と膝角度(ΦK)の一部との合計として推定され、又は前記下腿角度(ΦS)、前記膝角度(ΦK)、大腿セグメント長(LT)、及び下腿セグメント長(LS)から算出されることを特徴とする、請求項1に記載の方法。
- 下腿角度(ΦS)又は大腿角度(ΦT)が、慣性角度センサー(9)により直接測定され、又は大腿(1、10)若しくは下腿(2、5)に取り付けられた位置センサー(9)、及び膝角度センサー(9)により検出されることを特徴とする、請求項1又は2に記載の方法。
- 前記脚弦(LC)の前記長さ(LB)が、膝角度(ΦK)、大腿セグメント長(LT)、及び下腿セグメント長(LS)から決定されることを特徴とする、請求項1〜3の何れか一項に記載の方法。
- 前記抵抗が、前記脚弦(LC)の前記姿勢(ΦB)及び/又は前記長さ(LB)の変化の方向に応じて変化させられることを特徴とする、請求項1〜4の何れか一項に記載の方法。
- 前記脚弦の姿勢(ΦB)の変化と大腿角度(ΦT)又は下腿角度(ΦS)の変化との商(k)が算出され、歩行状況の評価のために使用されることを特徴とする、請求項1〜5の何れか一項に記載の方法。
- 脚弦速度の変化と大腿速度(ΦT)又は下腿速度(ΦS)の変化との商(k)が算出され、歩行状況の評価のために使用されることを特徴とする、請求項1〜6の何れか一項に記載の方法。
- 立脚期又は立脚状態を検出するために、前記下部(2)における力を検出する力センサー(9)が使用されることを特徴とする、請求項1〜7の何れか一項に記載の方法。
- 前記抵抗が、更に、前記上部(1)及び/又は前記下部(2)の姿勢又は姿勢の変化に応じて変化させられることを特徴とする、請求項1〜8の何れか一項に記載の方法。
- 前記抵抗が、特に前記脚弦(LC)の前記姿勢及び/又は前記姿勢の変化が設定境界値を越えた、又は下回ったときに変化させられることを特徴とする、請求項1〜9の何れか一項に記載の方法。
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PCT/EP2016/058356 WO2016169850A1 (de) | 2015-04-24 | 2016-04-15 | Verfahren zur steuerung einer dämpfungsveränderung bei einem künstlichen gelenk |
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US12059383B2 (en) | 2016-05-03 | 2024-08-13 | Icarus Medical, LLC | Assistive orthotic device with motors and sensors |
DE102017128618A1 (de) * | 2017-12-01 | 2019-06-06 | Ottobock Se & Co. Kgaa | Orthese, System und Verfahren zum Anpassen einer Orthese |
CN108619655B (zh) | 2018-05-25 | 2021-03-12 | 京东方科技集团股份有限公司 | 一种可穿戴设备、控制vr系统及其控制方法 |
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CN111281738A (zh) * | 2020-01-20 | 2020-06-16 | 深圳市丞辉威世智能科技有限公司 | 动作状态转换方法、装置、设备及可读存储介质 |
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DE102020004338B4 (de) * | 2020-07-20 | 2022-11-03 | Otto Bock Healthcare Products Gmbh | Verfahren zur Steuerung einer Prothese oder Orthese |
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CN112618282A (zh) * | 2020-12-17 | 2021-04-09 | 杭州添翼机器人有限公司 | 被动助行下肢外骨骼 |
CN112518723A (zh) * | 2020-12-17 | 2021-03-19 | 杭州添翼机器人有限公司 | 主被动结合的助行下肢外骨骼 |
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DE102023108577A1 (de) | 2023-04-04 | 2024-10-10 | Otto Bock Healthcare Products Gmbh | Verfahren zur Steuerung einer orthopädietechnischen Gelenkeinrichtung |
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