JP4444151B2 - 骨および椎骨のための安定化装置、およびそれに用いる弾性要素の製造方法 - Google Patents
骨および椎骨のための安定化装置、およびそれに用いる弾性要素の製造方法 Download PDFInfo
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- 210000000988 bone and bone Anatomy 0.000 title claims description 41
- 230000006641 stabilisation Effects 0.000 title claims description 23
- 238000011105 stabilization Methods 0.000 title claims description 23
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- 238000004873 anchoring Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
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- 239000000463 material Substances 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 239000000560 biocompatible material Substances 0.000 claims description 2
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- 239000003381 stabilizer Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 description 16
- 210000002414 leg Anatomy 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 2
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- 208000014674 injury Diseases 0.000 description 1
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- 210000000629 knee joint Anatomy 0.000 description 1
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- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
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- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
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- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
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Description
製造方法とによって達せられる。
されない先端部を有するねじ切りシャフト62、およびねじ頭63からなる。ねじ切りシャフト62は骨に捩じ込むための骨ねじ切り部64と、ばね要素1の雌ねじ部5と協働する雄ねじ部を有する筒状突起(図示されない)とを有する。ねじ頭63は、筒状部65と、それに隣接して、ねじ切りシャフト62と同様に、ばね要素1の雌ねじ部5′と協働する雄ねじ部を有する筒状突起(図示されない)を有する。
に、受部81の第1の自由端に隣接してU字型凹部83が設けられる。U字型凹部83によって形成される自由脚84,84′は、その内側において、内ねじ85の雄ねじ部と係合するための雌ねじ部を有する。ロッド82は、単軸ねじの組立てられた状態において、U字型凹部83の下部と内ねじ85との間に締付けられる。受部81の第1の自由端部と対向する第2の端部に隣接して、弾性要素1の第1の端部に隣接する雌ねじ部5と係合する雄ねじ部を有する筒状突起(図示されない)が設けられる。弾性要素1の第1の端部に対向する端部に隣接して、単軸ねじは、上述の多軸骨ねじ60のねじ切りシャフトと同じ形状で設けられるねじ切りシャフト86を有し、それは雄ねじ部を有する筒状突起(図示されない)で弾性要素1の雌ねじ部5′と係合する。
要素を組合せることによって、多様な特性を有する安定化装置100を得ることができる。安定化装置は、弾性要素を有する骨固定要素と弾性要素を有するロッド状要素とを必ずしも含まなくてもよい。適用分野に依存して、弾性要素を有するロッド状要素のみを設け、弾性要素を有さず剛性のねじ要素を有する骨固定要素を設けることもできる。
Claims (16)
- 脊柱の動的安定化のための安定化装置(100)であって、
椎骨に捩じ込まれることになる、少なくとも2つの骨固定要素(101,101′)と、
前記骨固定要素を接続するとともに、弾性要素(1,11,21,30,35,40)を含むロッド状要素(103)とを備え、
前記弾性要素は、中心軸(M)と、第1の端部(9,17,22)と、第1の端部に対向する第2の端部(9′,17′,22′)と、前記第1および第2の端部の間に弾性部とを有する、筒状の本体の形状で設けられ、
前記弾性要素はさらに、
少なくとも1つの剛性部と、
筒状の本体の第1の端部(9)から第2の端部(9′)に延在するように、弾性要素に前記中心軸(M)と同軸に設けられた、切れ目のないボア(2)とを含み、
前記弾性部は少なくとも2つの螺旋ばねで形成され、これらの螺旋ばねは、1つの螺旋ばね(7)のコイル(3)が、この螺旋ばねの少なくとも一部で、もう1つの螺旋ばね(8)のコイルの間に延在するよう同軸に配置され、
前記螺旋ばねは、所定のリードを有しかつ所定の長さに渡って、前記中心軸(M)の方向に延在するように前記筒状の本体の壁に形成された2つの螺旋状の凹部(3,4)によってそれぞれ形成され、該螺旋状の凹部は、径方向にボアに向かって開いており、かつ、前記弾性部から前記剛性部に変わる部分において、壁の材料の負荷のピークを最小化するように成形されたランアウト(120,120’)を含む、安定化装置。 - ばね要素は等しい外径を有する、請求項1に記載の安定化装置。
- 螺旋ばね(7,8)は、螺旋ばね(7,8)の中央軸を含む平面においてコイル(3,4)と等しい断面を有する、請求項1または2に記載の安定化装置。
- 弾性要素(1,11,20,30,35,40)は2つの必然的に同一な螺旋ばねを有し、
2つの螺旋ばね(7,8)の各々は、共通する中央軸のまわりに互いに相対して180°で回転される、請求項1から3の1つに記載の安定化装置。 - 筒状本体の第1の端部(9)から第2の端部(9′)に延在する切れ目のないボア(2,34,37,42)は、弾性要素に中央軸(M)と同軸に設けられる、請求項1から4の1つに記載の安定化装置。
- 切れ目のないボア(37,42)の直径(D1)は中心軸(M)に沿って変動する、請求項1に記載の安定化装置。
- 特にチタンなどの生体に適合する材料からできている、請求項1から6の1つに記載の安定化装置。
- 第1の端部に隣接して、雄ねじ部を有する第1の筒状突起(16,23,23′)、または雌ねじ部(5,5′,15,33,36,41)を有する第1のボアは、骨ねじ(61)のシャンク(62)またはねじ頭(63)に接続するために、またはロッド部(51)に接続するために、または板(92)に接続するために設けられる、請求項1から6の1つに記載の安定化装置。
- 第2の端部(22′)に隣接して、雄ねじ部を有する第2の筒状突起(23′)、または雌ねじ部(5′,15,33′,36′,41′)を有する第2のボアは、骨ねじ(61)のシャンク(62)またはねじ頭(63)に接続するために、またはロッド部(51′)に接続するために、または板(92)に接続するために設けられる、請求項8に記載の安定化装置。
- 弾性要素の外径(D2)は中央軸(M)に沿って変動する、請求項1から9の1つに記載の安定化装置。
- 少なくとも2つの螺旋ばね(31,32)のピッチ(α)は中央軸(M)に沿って変動する、請求項1から9の1つに記載の安定化装置。
- 前記骨固定要素(60,80,101,101′)が、骨の中で固定するためのシャンク(62,86)を含み、このシャンクは、前記弾性要素(1)を含む部分を有し、シャンクは一体または複数の部分を有する、請求項1から11の1つに記載の安定化装置。
- 2つの骨固定要素(60,80,101,101′,30,35,40)を接続するための前記ロッド状要素(50)が、前記弾性要素(1,11,20,30,35,40)の一方端に隣接する剛性のロッド部(51,51′)を含み、
前記ロッド状要素は、
一体に、または、前記剛性のロッド部および前記弾性部が別の部品として設けられる、請求項1から11の1つに記載の安定化装置。 - 弾性要素(1,11,20)の製造方法であって、
(a) 筒状の本体(112)を与えるステップと、
(b) 第1の螺旋に沿って、外側から筒状本体(112)に第1の凹部(114)を形成するステップと、
(c) 第2の螺旋に沿って、外側から筒状本体(112)にさらに少なくとも1つの第2の凹部(115)を形成するステップとを含み、
前記第1および第2の凹部(114,115)は、弾性部から剛性部に変わる部分において、壁の材料の負荷のピークを最小化するように成形されたランアウト(120,12
0’)を含む、方法。 - 凹部(114,115)を形成するステップは、EDMワイヤ切断、水力ミリング、レーザミリング、または他の機械加工方法によって実施される、請求項14に記載の方法。
- ステップ(b)およびステップ(c)における、第1および第2の凹部(114,115)の製造は同時である、請求項14または15に記載の方法。
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US7833256B2 (en) | 2010-11-16 |
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ES2383851T3 (es) | 2012-06-26 |
EP2151207A3 (de) | 2010-03-31 |
US20060129147A1 (en) | 2006-06-15 |
EP1586276A1 (de) | 2005-10-19 |
US20150238232A1 (en) | 2015-08-27 |
US20110054534A1 (en) | 2011-03-03 |
JP2005305156A (ja) | 2005-11-04 |
EP1586276B1 (de) | 2009-11-25 |
US8449574B2 (en) | 2013-05-28 |
ES2337364T3 (es) | 2010-04-23 |
EP2151207A2 (de) | 2010-02-10 |
EP2151207B1 (de) | 2012-03-07 |
KR20060045749A (ko) | 2006-05-17 |
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