JP4331481B2 - 骨インプラント、特に椎間インプラント - Google Patents
骨インプラント、特に椎間インプラント Download PDFInfo
- Publication number
- JP4331481B2 JP4331481B2 JP2002560552A JP2002560552A JP4331481B2 JP 4331481 B2 JP4331481 B2 JP 4331481B2 JP 2002560552 A JP2002560552 A JP 2002560552A JP 2002560552 A JP2002560552 A JP 2002560552A JP 4331481 B2 JP4331481 B2 JP 4331481B2
- Authority
- JP
- Japan
- Prior art keywords
- bone implant
- bone
- implant
- filler
- outer shell
- 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.)
- Expired - Lifetime
Links
- 239000007943 implant Substances 0.000 title claims description 55
- 210000000988 bone and bone Anatomy 0.000 title claims description 38
- 239000000945 filler Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000001506 calcium phosphate Substances 0.000 claims description 7
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 7
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 6
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 6
- 229920006393 polyether sulfone Polymers 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- 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 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 229910000391 tricalcium phosphate Inorganic materials 0.000 claims description 5
- 235000019731 tricalcium phosphate Nutrition 0.000 claims description 5
- 229940078499 tricalcium phosphate Drugs 0.000 claims description 5
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 4
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims description 4
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- 239000004695 Polyether sulfone Substances 0.000 claims description 4
- 239000004697 Polyetherimide Substances 0.000 claims description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 229920002492 poly(sulfone) Polymers 0.000 claims description 4
- 229920006260 polyaryletherketone Polymers 0.000 claims description 4
- 229920001601 polyetherimide Polymers 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- -1 polyoxymethylene Polymers 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 2
- 235000011010 calcium phosphates Nutrition 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229920003208 poly(ethylene sulfide) Polymers 0.000 claims description 2
- 239000011116 polymethylpentene Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 230000008468 bone growth Effects 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000007731 hot pressing Methods 0.000 claims 1
- 238000005304 joining Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 208000003076 Osteolysis Diseases 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 230000029578 entry into host Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 208000029791 lytic metastatic bone lesion Diseases 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- A61F2310/00407—Coating made of titanium or of Ti-based alloys
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00419—Other metals
- A61F2310/00562—Coating made of platinum or Pt-based alloys
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00419—Other metals
- A61F2310/00568—Coating made of gold or Au-based alloys
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Cardiology (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)
- Materials For Medical Uses (AREA)
Description
A)インプラント被覆の平滑な表面と肉眼で見える歯を備え隣接する椎体の端板に接触する基面とが、前記各面の上に、骨組織の最適な癒合を生じさせず、
B)インプラントの空洞内に充填材を使用する場合、該充填材が内壁の面平滑さのゆえに容易に滑り落ちることがあることにある。
本発明に係る少なくとも2μmの表面粗さは新たに成長した骨に対してインプラントへの固定向上、すなわち骨同化の向上を可能にする。
図1〜図4に示す椎間インプラントは放射線透過性材料(PEEK、これは選択的に炭素繊維またはガラス繊維で強化しておくことができる)からなり、この材料は射出成形法で環状中空体1として構成されている。インプラントが中空筒部分形外殻6を含み、この外殻は前側部分9と後側部分10と二つの側部分11とを有しかつ筒軸線7を限定する。
Claims (17)
- 放射線透過性材料からなる椎間インプラントであって、
充填材を充填して新しい骨の成長を許容するように設定された中央室を区画する中空筒部分形外殻(6)からなり、該中空筒部分形外殻(6)は前側部分(9)、後側部分(10)、第一および第二側部分(11)を有し、
椎間インプラントは第一及び第二中間壁からなり、該第一及び第二中間壁は前記前側部分(9)を前記後側部分(10)に結合して中央室を更に分割し、該第一及び第二中間壁は相互に間隔をおいて配置されて、
前記中空筒部分形外殻(6)及び前記第一及び第二中間壁の複数の穿孔からなり、該中空筒部分形外殻(6)の穿孔は中央室と流体連通して前記充填剤を充填して前記インプラントに固定し、
横控え(4)が前記第一中間壁と前記第二中間壁の間に位置して前記第一中間壁と前記第二中間壁を立体的に固定し、
少なくとも前記表面の一部が少なくとも2μmの表面粗さを有することを特徴とする椎間インプラント。 - 中間壁(3)が横控え(4)によって互いに支えられていることを特徴とする、請求項1記載の骨インプラント。
- 表面粗さが10μm未満であることを特徴とする、請求項1または2記載の骨インプラント。
- 中間壁(3)にある穿孔が、3.5mm2の最小面積を備えていることを特徴とする、請求項1〜3のいずれか1項記載の骨インプラント。
- 外殻(6)の側部分(11)が、好ましくは最小面積3.5mm2の穿孔(8)を有することを特徴とする、請求項1〜4のいずれか1項記載の骨インプラント。
- 放射線透過性材料が下記の群、ポリアリールエーテルケトン(PAEK)、ポリエーテルイミド(PEI)、ポリオキシメチレン(POM)、液晶高分子(LCP)、ポリメチルペンテン(PMP)、ポリスルホン(PSU)、ポリエーテルスルホン(PESUまたはPES)、ポリエチレンテレフタレート(PETP)、ポリメチルメタクリレート(PMMA)および超高分子ポリエチレン(UHMW−PE)から選択されていることを特徴とする、請求項1〜5のいずれか1項記載の骨インプラント。
- 放射線透過性材料が、好ましくは炭素繊維、ガラス繊維またはPEEK繊維で繊維強化されていることを特徴とする、請求項1〜6のいずれか1項記載の骨インプラント。
- 骨インプラントの総容積Vと中空体(1)の容積vとの間の比V:vが1.9〜2.3の範囲内であることを特徴とする、請求項1〜7のいずれか1項記載の骨インプラント。
- インプラントの表面が少なくとも一部にX線透過性被覆またはX線透過性に実質的に影響しない薄い被覆を備えていることを特徴とする、請求項1〜8のいずれか1項記載の骨インプラント。
- 被覆が金属、好ましくはチタン、金または白金からなることを特徴とする、請求項9記載の骨インプラント。
- 被覆がセラミックス材料、好ましくはヒドロキシアパタイトまたはリン酸三カルシウムからなることを特徴とする、請求項9記載の骨インプラント。
- 中空体(1)がリン酸カルシウム、好ましくはヒドロキシアパタイトまたはリン酸三カルシウムからなる充填材で少なくとも部分的に充填されていることを特徴とする、請求項1〜11のいずれか1項記載の骨インプラント。
- 中空体(1)が、硫酸カルシウム、脱灰骨、自己由来骨またはコラリン物質からなる充填材を少なくとも部分的に充填されていることを特徴とする、請求項1〜11のいずれか1項記載の骨インプラント。
- 中空体(1)が、好ましくは多孔質の吸収性高分子からなる充填材で少なくとも部分的に充填されていることを特徴とする、請求項1〜11のいずれか1項記載の骨インプラント。
- 場合によってインプラントに設けられている穿孔(5;8)がX線不透過性の充填材で少なくとも部分的に充填されていることを特徴とする、請求項4〜14のいずれか1項記載の骨インプラント。
- 請求項1〜15のいずれか1項記載の骨インプラントを製造する方法において、環状中空体(1)が射出成形技術、熱間加工技術またはホットプレス技術によって製造されることを特徴とする方法。
- 前記中間壁は中空筒部分形外殻(6)によって支持部を椎体の端板の近くまで上昇させるように形成される請求項1記載の椎間インプラント。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/CH2001/000069 WO2002060356A1 (de) | 2001-01-30 | 2001-01-30 | Knochenimplantat, insbesondere zwischenwirbelimplantat |
Publications (2)
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JP2004522516A JP2004522516A (ja) | 2004-07-29 |
JP4331481B2 true JP4331481B2 (ja) | 2009-09-16 |
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Application Number | Title | Priority Date | Filing Date |
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JP2002560552A Expired - Lifetime JP4331481B2 (ja) | 2001-01-30 | 2001-01-30 | 骨インプラント、特に椎間インプラント |
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US (2) | US7044972B2 (ja) |
EP (1) | EP1355593B1 (ja) |
JP (1) | JP4331481B2 (ja) |
KR (1) | KR100788478B1 (ja) |
CN (1) | CN1287752C (ja) |
AR (1) | AR032218A1 (ja) |
AT (1) | ATE326925T1 (ja) |
AU (1) | AU2001226616B2 (ja) |
BR (1) | BR0116822B1 (ja) |
CA (1) | CA2436243C (ja) |
CO (1) | CO5390054A1 (ja) |
CZ (1) | CZ20031981A3 (ja) |
DE (1) | DE50109908D1 (ja) |
DK (1) | DK1355593T3 (ja) |
ES (1) | ES2262621T3 (ja) |
HK (1) | HK1058755A1 (ja) |
IL (1) | IL156148A0 (ja) |
MX (1) | MXPA03005963A (ja) |
NO (1) | NO20033379L (ja) |
NZ (1) | NZ527202A (ja) |
PT (1) | PT1355593E (ja) |
SI (1) | SI1355593T1 (ja) |
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- 2001-01-30 AU AU2001226616A patent/AU2001226616B2/en not_active Ceased
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- 2001-01-30 BR BRPI0116822-3A patent/BR0116822B1/pt not_active IP Right Cessation
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- 2001-12-20 TW TW090131611A patent/TWI236368B/zh not_active IP Right Cessation
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NO20033379D0 (no) | 2003-07-29 |
ES2262621T3 (es) | 2006-12-01 |
HK1058755A1 (en) | 2004-06-04 |
CN1482890A (zh) | 2004-03-17 |
US20040082999A1 (en) | 2004-04-29 |
DE50109908D1 (de) | 2006-06-29 |
BR0116822B1 (pt) | 2010-12-14 |
US7044972B2 (en) | 2006-05-16 |
NO20033379L (no) | 2003-07-29 |
JP2004522516A (ja) | 2004-07-29 |
SI1355593T1 (sl) | 2006-10-31 |
IL156148A0 (en) | 2003-12-23 |
DK1355593T3 (da) | 2006-07-31 |
AR032218A1 (es) | 2003-10-29 |
EP1355593B1 (de) | 2006-05-24 |
US20060167549A1 (en) | 2006-07-27 |
NZ527202A (en) | 2004-04-30 |
BR0116822A (pt) | 2004-01-27 |
WO2002060356A1 (de) | 2002-08-08 |
CZ20031981A3 (cs) | 2004-10-13 |
CN1287752C (zh) | 2006-12-06 |
CO5390054A1 (es) | 2004-04-30 |
CA2436243A1 (en) | 2002-08-08 |
TWI236368B (en) | 2005-07-21 |
AU2001226616B2 (en) | 2005-03-17 |
PT1355593E (pt) | 2006-10-31 |
KR100788478B1 (ko) | 2007-12-24 |
EP1355593A1 (de) | 2003-10-29 |
CA2436243C (en) | 2009-05-12 |
KR20030078880A (ko) | 2003-10-08 |
ATE326925T1 (de) | 2006-06-15 |
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