JP2001046410A - モジュール式の整形外科用移植部材及びそのための留具 - Google Patents
モジュール式の整形外科用移植部材及びそのための留具Info
- Publication number
- JP2001046410A JP2001046410A JP2000184570A JP2000184570A JP2001046410A JP 2001046410 A JP2001046410 A JP 2001046410A JP 2000184570 A JP2000184570 A JP 2000184570A JP 2000184570 A JP2000184570 A JP 2000184570A JP 2001046410 A JP2001046410 A JP 2001046410A
- Authority
- JP
- Japan
- Prior art keywords
- fastener
- stem
- tapered
- implant
- male
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000399 orthopedic effect Effects 0.000 title claims description 10
- 238000002513 implantation Methods 0.000 title abstract description 3
- 239000007943 implant Substances 0.000 claims description 20
- 210000000689 upper leg Anatomy 0.000 claims 4
- 210000001217 buttock Anatomy 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 210000003734 kidney Anatomy 0.000 abstract 1
- 238000002788 crimping Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 210000004394 hip joint Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0017—Angular shapes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/284—Locking by means of elastic deformation
- F16B39/286—Locking by means of elastic deformation caused by saw cuts
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
んでもなお強固な結合を保持しうる、移植部材本体要素
とステム要素間の結合留具の提供。 【解決手段】 本体とステムが雄/雌テーパ接合の部分
を有し、留具18はそのテーパ接合の強固な係合を保持
し、移植部材要素6を係合してそれらを一緒に引き寄せ
るもので、緩みが起こっても、留具と各要素間の圧着を
保持するように変形する弾性部分を有する留具。
Description
形外科用移植部材の結合に関する。特に、本発明は、接
合が緩んでも雄/雌のテーパ接合に圧着性を保持する留
具を有する雄/雌のテーパ結合に関する。
体とその本体に結合しうるステムを有する。本体とステ
ムとの結合は、一般に本体とステムとの係合テーパによ
ってなされる。例えば、米国特許第5,405,396
号明細書には、金属板及び金属板と結合しうるステムを
有する脛骨の人工移植部材が記載されている。金属板は
雌テーパを有し、ステムは、その雌テーパ内に密接に適
合するように、雄テーパを有する。もう1つの例とし
て、米国特許第3,067,740号(’740)明細
書には、ソケット部材、上部本体、及び爪、又はステム
部材を有する臀部の結合用人工移植部材が記載されてい
る。上部本体は雌テーパを有し、ステムは雌テーパ内に
密接に適合するように、雄テーパを有する。ステムの上
端は、上部本体とステムを圧着して堅固に係合するため
のキャップナットを受け入れるようネジ山がつけられて
いる。
ウあるいはキャップナットが自動締結機能を強化するた
めに用いられているような自動的に締まる種類のもので
あるか、又は締結スクリュウあるいはキャップナットが
締結を行うために必要であるような非自動締結のもので
ある。先行技術のテーパジョイントにおける問題点の一
つは、当初の据え付け後に、患者の動作により負荷が加
えられたような場合、テーパが緩むことである。締結ス
クリュウは、その時、ジョイントとの圧着性を失い、移
植部材からネジ締めが緩みはじめる。上記の特許’74
0は、キャップナットのネジとステム間の摩擦による係
合を付与することによりナットが緩まないような弾性締
結プラグの使用を教示している。しかしこの装置は、設
置する間に生ずるであろうような圧着ロスのためには役
立たない。加えて、弾性材料の使用は、人工移植部材中
に望ましくない材料をもう一つ導入することになる。
式の整形外科用移植部材を結合する留具を提供すること
を目的とし、特に、本発明は、接合が緩んでも雄/雌の
テーパ接合に圧着性を保持するような雄/雌のテーパ結
合を有する留具を提供することを目的とする。
題を解決するために鋭意検討の結果、本発明をなすに至
った。即ち、本発明は、整形外科用のモジュール式の複
数の移植部材要素を一緒に引き寄せるための留具であっ
て、該留具は、第1の端部と、第2の端部と、第1の端
部と第2の端部間に伸びている長手軸線を持つ部材から
なり、スプリングタブが第1の端部と第2の端部の一つ
から伸びており、該スプリングタブが該長手軸線に沿っ
た方向に弾性的に変形可能であることを特徴とする留具
に関するものである。
素との間の結合ジョイントを提供するもので、当初から
強固に結合させ、さらにジョイントが負荷を受けても強
固な結合を保持するような結合ジョイントを提供するも
のである。本体とステムは、その一部に雄/雌テーパ結
合を有する。留具はテーパ結合を強固な係合で保持す
る。留具は移植部材要素を係合し、それらを一緒に引き
寄せる。留具は弾性部分を有しており、その弾性部分
は、負荷による緩みが起こっても該留具と該要素との間
の圧着接合を保持するように変形する。
さらに詳述する。図1から図8は、雄/雌係合部分によ
り結合された2つの要素からなる典型的なモジュール式
の臀部の結合用人工器具を示す。移植部材本体2は前端
部分1及び末端部分3を有する。好ましくは、本体2
は、末端部分3の方に開いており前端部分1に向かって
狭まっているような雌テーパ4を有する。さらに本体2
は、前端部分の方に開いている凹部10及び雌テーパ4
と凹部10の間を連絡する貫通孔12を有する。凹部1
0は貫通孔12よりも広いので、肩部14は雌テーパ4
の反対側で本体2に形成される。もう一つの態様(図示
されていない)においては、凹部10は省略され、貫通
孔12が雌テーパ4から前端部分1へ連絡しており、前
端部分1の表面が肩部を形成している。
分7を有する。好ましくは、ステム6はその前端部分5
の近傍に雄テーパ8を有する。雄テーパ8は、雌テーパ
4と係合するために前端部分5に向かって狭まってい
る。好ましくは、よく知られているように雄テーパ8と
雌テーパ4が係合・密着して自動的に締結するように、
テーパ角度は選択される。好ましくは、ステム6は、そ
の前端部分5から伸びるネジの切られたスタッド16を
有する。スタッド16は、ステム6と本体2が一緒に組
み立てられるとき貫通孔12を貫通して伸びるような寸
法に作られている。
及び縦軸23を有する。ネジの切られた孔24は末端部
分22の方に開いており、ネジの切られたスタッド16
にネジ止めするように形作られている。前端部分20
は、レンチを受け入れることができるように駆動部26
を有する。好ましくは、図示されているように、六角レ
ンチを受け入れるための六角凹部である。図9の態様に
おいて、ステム23はネジの切られた孔25を有し、留
具27はその末端部分から伸びるネジの切られたスタッ
ド29を有し、該ネジの切られたスタッド29はネジの
切られた孔25にネジ止めで係合するように形作られて
いる。
成されており、スプリングタブ28を規制するように末
端方向へ開いている。スプリングタブ28は、前端−末
端へ、換言すれば、長手軸線23に沿った方向へ、弾性
的で変形可能なカンチレバー状の円周方向の延長部材を
形成している。突起部32は、各スプリングタブ28の
開放端34の近傍で末端方向へ伸びている。典型的な態
様として、スプリングタブ28の上に機械加工され、末
端方向へ突出している小突起を示すことができる。図3
に示すように、突起部32は、留具18の末端部の大部
分の形状であって、留具18が平らな面に取り付けられ
た場合には、突起部32はその面に接触することとな
る。別の態様では、スプリングタブは突起部32を有さ
ずに形作られているが、その代わり、常に末端方向へ曲
がっており、開放端34が留具18の末端部の大部分の
形状と同じになっている。
ッド16と共に雌テーパ4に挿入され、貫通孔12を貫
通して凹部10中に伸びている。それらのテーパはしっ
かりと設置される。設置は、槌のようなものを用いて各
部材に衝撃を加えることにより促進される。留具18
は、スプリングタブ28が肩部14と接触するまでネジ
の切られたスタッド16にネジ止めされる。この時点で
留具18をさらに締めつけると、スプリングタブ28は
前端方向へ弾性的に曲がる。好ましくは、留具18は、
スプリングタブ28が再生可能な望ましい程度にまで変
形されるようにあらかじめ設定されたトルクまで締めつ
けられる。このように組み立てられて、テーパジョイン
トは良好に設置され、蓄積されたスプリングのエネルギ
ーにより肩部の方に偏ったスプリングタブで圧着が保持
される。スプリングタブ28と肩部14の間の摩擦力
は、留具18のネジのない部分に生じる。歩行など患者
の動作によって移植部材に負荷がかかり、結合が緩んだ
場合は、スプリングタブ28はスプリング張力のため肩
部の方に移動し、ジョイントを圧着状態に保持するだろ
う。スプリングタブ28は肩部14に対して偏って置か
れているから、摩擦は留具18のネジのない部分に生じ
るように作用する。
り、特許請求の範囲により規定される本発明の範囲と精
神を逸脱しない限り、デザインや構成における種々の変
形によって好ましい態様がなされうるということは当業
者に理解されるだろう。
素とステム要素との間の結合ジョイントであって、当初
から強固に結合し、さらにジョイントが負荷を受けても
強固な結合を保持するような優れた結合ジョイントが提
供される。
み立てられた図1の留具の側面方向の断面図である。
である。
Claims (10)
- 【請求項1】 整形外科用のモジュール式の複数の移植
部材要素を一緒に引き寄せるための留具であって、該留
具は、第1の端部と、第2の端部と、第1の端部と第2
の端部間に伸びている長手軸線を持つ部材からなり、ス
プリングタブが第1の端部と第2の端部の一つから伸び
ており、該スプリングタブが該長手軸線に沿った方向に
弾性的に変形可能であることを特徴とする留具。 - 【請求項2】 移植部材要素の一つとネジ係合しうるよ
うに、前記部材の一部にネジが切られている請求項1記
載の留具。 - 【請求項3】 移植部材要素の一つの雄ネジと係合する
ため、前記部材が雌ネジを有する請求項2記載の留具。 - 【請求項4】 移植部材要素の一つの雌ネジと係合する
ため、前記部材が雄ネジを有する請求項2記載の留具。 - 【請求項5】 スプリングタブが、第1又は第2の端部
の一つから突出しているカンチレバー状の円周方向の延
長部材である請求項2記載の留具。 - 【請求項6】 テーパ部分のあるステムと、該テーパ部
分のあるステムと係合するように形成されたテーパ部分
のある本体と、ステムのテーパ部分と本体のテーパ部分
とを係合するように引き寄せるための留具とを備え、該
留具は該留具から伸びているスプリング要素を持ってお
り、該留具はステムとネジで係合し、該スプリング要素
は本体に当接し本体に対して弾性的に付勢されている、
ことを特徴とするモジュール式の整形外科用移植部材。 - 【請求項7】 ステムのテーパ部分と本体のテーパ部分
が自動的に締結するものである請求項6記載の整形外科
での移植部材要素モジュール。 - 【請求項8】 ステムが雄テーパを有し、本体が雌テー
パを有する請求項7記載のモジュール式の整形外科用移
植部材。 - 【請求項9】 留具が、スプリング要素の反対側の端に
凹んだ駆動部を有する請求項8記載のモジュール式の整
形外科用移植部材。 - 【請求項10】 大腿骨の髄内管に挿入して該大腿骨の
頭部と置換するためのモジュール式の臀部の人工器具で
あって、 該大腿骨の該髄内管に挿入するためのステムで、前端部
分と末端部分を有し、該前端部分の近傍に雄テーパ部及
び該テーパ部から前端へ伸びるネジの切られたスタッド
を有するステムと、 該大腿骨の該頭部と置換するための本体であって、前端
部分と末端部分を有し、ステムの雄テーパ部と係合する
雌テーパ部を有し、雌テーパ部の孔と本体の末端部分の
間を連絡する貫通孔を有し、前記ネジの切られたスタッ
ドが該貫通孔の中に伸びている本体と、 該ステムのテーパ部分と本体のテーパ部分を一緒に引き
寄せて係合するための留具であって、前端部分と末端部
分及び該前端部分と末端部分の間に伸びている長手軸線
を有し、該末端部分は、末端方向へ開いてカンチレバー
状の円周方向の延長部材を形成する円周に沿った溝を有
し、該円周方向の延長部材は前端−末端へ弾力で変形可
能であり、該留具はネジの切られたスタッドと係合して
ネジ止め可能であり、該円周方向の延長部材は本体の前
端部分を支え、本体の前端部分に対して弾性的に付勢さ
れている留具、を有することを特徴とするモジュール式
の臀部の人工器具。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/334402 | 1999-06-16 | ||
US09/334,402 US6090146A (en) | 1999-06-16 | 1999-06-16 | Fastener for a modular implant |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001046410A true JP2001046410A (ja) | 2001-02-20 |
Family
ID=23307025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000184570A Pending JP2001046410A (ja) | 1999-06-16 | 2000-06-15 | モジュール式の整形外科用移植部材及びそのための留具 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6090146A (ja) |
EP (1) | EP1060716B1 (ja) |
JP (1) | JP2001046410A (ja) |
AT (1) | ATE281803T1 (ja) |
AU (1) | AU778348B2 (ja) |
CA (1) | CA2310898C (ja) |
DE (1) | DE60015652T2 (ja) |
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1999
- 1999-06-16 US US09/334,402 patent/US6090146A/en not_active Expired - Lifetime
-
2000
- 2000-06-05 CA CA002310898A patent/CA2310898C/en not_active Expired - Fee Related
- 2000-06-05 AT AT00201972T patent/ATE281803T1/de not_active IP Right Cessation
- 2000-06-05 DE DE60015652T patent/DE60015652T2/de not_active Expired - Lifetime
- 2000-06-05 EP EP00201972A patent/EP1060716B1/en not_active Expired - Lifetime
- 2000-06-15 AU AU40864/00A patent/AU778348B2/en not_active Ceased
- 2000-06-15 JP JP2000184570A patent/JP2001046410A/ja active Pending
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JP2008142539A (ja) * | 2006-11-28 | 2008-06-26 | Depuy Products Inc | モジュール式近位試験体 |
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EP1060716A3 (en) | 2001-10-24 |
EP1060716B1 (en) | 2004-11-10 |
AU4086400A (en) | 2000-12-21 |
US6090146A (en) | 2000-07-18 |
EP1060716A2 (en) | 2000-12-20 |
CA2310898C (en) | 2009-03-10 |
DE60015652T2 (de) | 2005-11-10 |
DE60015652D1 (de) | 2004-12-16 |
AU778348B2 (en) | 2004-12-02 |
CA2310898A1 (en) | 2000-12-16 |
ATE281803T1 (de) | 2004-11-15 |
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