WO2000016066A1 - Verfahren zum prüfen keramischer pfanneneinsätze von hüftgelenk-endoprothesen - Google Patents
Verfahren zum prüfen keramischer pfanneneinsätze von hüftgelenk-endoprothesen Download PDFInfo
- Publication number
- WO2000016066A1 WO2000016066A1 PCT/EP1999/006559 EP9906559W WO0016066A1 WO 2000016066 A1 WO2000016066 A1 WO 2000016066A1 EP 9906559 W EP9906559 W EP 9906559W WO 0016066 A1 WO0016066 A1 WO 0016066A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- socket
- socket insert
- insert
- test force
- test
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/468—Testing instruments for artificial joints
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4688—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means
- A61F2002/4692—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means fluid
- A61F2002/4693—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means fluid hydraulic
-
- 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
- A61F2220/0033—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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0089—Biorheological properties
Definitions
- the invention relates to a method for testing ceramic socket inserts of hip joint endoprostheses in accordance with the preamble of the first claim.
- hip joint endoprostheses generally consist of modular systems.
- a metallic shaft is anchored in the thigh bone with a pin on which a spherical head is placed.
- the ball head articulates against a pan or pan insert.
- a cup is implanted directly in the thigh bone, while a cup insert is first inserted into a socket housing, which is then anchored in the pelvic bone.
- components for metal and plastic hip replacements there are also components made of high-purity, high-density ceramic. These components offer significant advantages over components made of other materials, such as perfect biocompatibility and maximum wear resistance.
- ceramic materials are brittle, which means that material inhomogeneities, for example microcracks, represent an increased risk of breakage under load.
- the security against failures due to risky components can be increased if it is possible to find and sort these components out after their production by means of a suitable test.
- a supporting force acts simultaneously on a partial area of the outer surface of the spherical cup insert.
- the support force increases with increasing load from the test force.
- the test force is introduced over a predetermined partial area of the inner surface of the socket insert, the inner calotte, which symmetrically surrounds the pole of the socket insert. This creates stresses in the pan insert, which also occur when the pan is actually loaded.
- the entire outer surface of the cup insert with conically shaped areas is placed under a sufficiently uniform tensile stress during the test.
- the size of the partial area of the functional area of the socket insert, on which the test force acts, is predetermined by the height of the section covered by the partial area.
- the height of the section should be approximately 15% to 30% of the maximum inside diameter of the functional surface of the socket insert. This is the height of a spherical section immersed in the socket insert, via which the test force is mechanically introduced into the socket insert by means of a stamp or the space in which the test force is applied by means of a hydraulic fluid.
- the specified height of the section creates a loaded area that enables an optimal simulation of the actual load of a pan insert.
- the test force increases linearly up to a predetermined maximum value, which should be reached within about 10 seconds.
- the supporting force like the test force, also increases linearly and amounts to approximately 10% of the test force.
- the test force is introduced vertically in the direction of the pole of the functional surface.
- the supporting force is introduced in the opposite direction.
- a stamp can press against the outer surface of the socket insert, the supporting force being able to be generated hydraulically, pneumatically or with springs.
- the maximum diameter of the functional surfaces of the socket inserts As a criterion for the level of the test forces, it is advantageous to use the maximum diameter of the functional surfaces of the socket inserts. For example, for a pan insert with a maximum functional surface diameter of 28 mm and a life span of 20 years to be ensured, a test force of 13 to 15 kN is selected.
- the material of this section must not damage the functional surface of the socket insert during the test. It must also be ensured that manufacturing tolerances are compensated for. For this reason, it is advantageous if at least one surface layer of the section consists of a material that is softer than the material of the socket insert and has a modulus of elasticity of approximately 300 to 1500 MPa. Plastics, in particular polytetrafluoroethylene, have proven suitable.
- the pan inserts are held in the holder of the testing device according to the invention in a so-called receiving ring.
- the receiving ring carries the pan inserts in the edge area of the maximum outer circumference.
- the wall of the opening of the receiving ring is tapered, adapted to this wall area. While the outside diameters of the receiving rings are constant, the diameters of the receiving openings can correspond to the Outside diameters of the pan inserts may differ. This makes it advantageously possible to be able to test pan inserts with different diameters of the functional surfaces in one and the same holding device, simply by changing the holding rings.
- a narrow ring made of a ductile material is placed between the receiving ring and the socket insert.
- the ring can, for example, consist of copper or another soft metal or also of a suitable plastic.
- manufacturing tolerances can be bridged and possible structures, such as surface roughness, can be compensated.
- a friction-related jamming and tilting of a socket insert within the receiving ring is avoided. The removal of a socket insert from the receiving ring and the subsequent removal of the ring made of ductile material are possible without tools and thus without the risk of damaging the socket insert.
- FIG. 1 shows a section through a test device with a mechanical
- Figure 2 shows a section through a test device in which the test force is generated hydraulically.
- 1 denotes a test device 1 for mechanically applying the test force F.
- Holding device 2 with a circular recess 3 which surrounds an opening 4.
- a receiving ring 5 is inserted in the circular recess 3, which preferably consists of a high-strength material.
- the wall 6 of the opening 7 for receiving a pan insert 8 is conical. It is adapted to the edge region 9 of the dome-shaped pan inserts 8.
- the diameter of the opening 7 and the conical shape of the wall 6 are provided for pan inserts with the same maximum diameter of the functional surface. For socket inserts with different diameters of the functional surfaces, other mounting rings with suitable openings are available.
- the pan insert 8 is suspended in the edge region 9 in the opening 4 of the receiving ring 5.
- a ring 10 made of a ductile material For example, it is a ring made of copper sheet, which has approximately the height that the receiving ring 5 is thick. Due to the ductility of the material, manufacturing tolerances and any structures in the edge area 9 of the socket insert 8 are compensated for. In addition, the removal of the pan insert 8 from the receiving ring 5 is facilitated.
- the test force F is applied by means of a stamp 11.
- the stamp 11 can carry a spherical section 13 on its end face 12, the radius of which is adapted to the functional surface 14 of the socket insert 8.
- the ball section 13 can, however, also be placed loosely on the functional surface 14 of the socket insert 8 as an exchangeable part.
- the spherical section 13 covers the partial surface 14a via which the test force is introduced into the socket insert 8.
- the material of the spherical section 13 in the present exemplary embodiment is polytetrafluoroethylene with an elastic modulus of approximately 450 MPa. The material endures the high pressure forces caused by the test force and leaves no traces on the highly sensitive functional surface 14.
- the center line 16 of the punch 11 is at a right angle 17 on a tangent 18 at the pole 15.
- the test force F is introduced into the socket insert 8 in the direction of the center line 16 by means of the punch 11.
- the height 19 of the section 13 depends on the maximum diameter 20 of the functional surface 14 and can be 15 to 30% of the same.
- the direction of action of the supporting force S also extends through the pole 15, perpendicular to the tangent 18.
- the supporting force S is applied by means of a plunger 21 which is placed symmetrically to the center line 16 below the pole 15 on the outer surface 22 of the socket insert 8.
- the application of a supporting force S according to the invention ensures that the entire outer surface of the socket insert with conically shaped areas is placed sufficiently uniformly under tension during the test. This is advantageous because, due to the possible manufacturing tolerances of the conical surface of the socket housing for receiving the socket insert, it is not possible to predict which area of the outer surface of the socket insert will concentrate on due to tensile stress during a real use as an implant. If a socket insert breaks due to an applied test force F, the shape and position of the fragments correspond to a fracture as occurs when a socket insert which was inserted in an implanted socket housing is overloaded.
- FIG. 2 shows a further embodiment of the test device in which the test force is applied hydraulically by a liquid under pressure.
- the holding device and the pan insert have the same structure as in the previous exemplary embodiment. For this reason, the matching features are identified with the same reference numbers.
- a metal block 23 is placed on the holding device 2. Its contour, which faces the functional surface 14 of the socket insert 8, is adapted to its contour 14 and corresponds approximately to a spherical section 24 placed on the metal block 22.
- the metal block 23 is evenly acted upon with a force 25 which is greater than that caused by the pressure fluid 31 applied test force so that the metal block 23 does not lift off the holding device 2 during the test.
- Partial area 14a is predetermined by the height 27 of the space, by the predetermined distance 27 from the pole 15, in which the gap 26 is closed by an annular sealing element 28.
- the ring lies here
- the partial surface 14a closed off by the sealing element 28 is the surface over which the test force is introduced into the socket insert 8 by means of the pressure fluid 31.
- the block 23 has bores 30 as a supply line for the pressure fluid 31.
- the pressure fluid 31 is pumped by a pump (not shown here) in the direction of the arrow 32 through the outlet opening 33 into the gap 26 between the ball section 24 and the functional surface 14 of the socket insert 8.
- the pressure curve and the pressure reached in the pressure fluid 31 and thus the applied test force can be checked by means of an indicated pressure measuring device 34. All media are suitable as hydraulic fluid Do not attack the surfaces of the ceramic pan inserts and do not contaminate them.
- the maximum test force should be reached within about 10 seconds and the relief in less than 0.5 seconds. This is to prevent possible expansion of microcracks that form.
- Cup inserts that have critical stress-concentrating material inhomogeneities fail this test and are destroyed. However, those pans that have passed the test have a strength that is higher than the limits defined by the overload test.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Analytical Chemistry (AREA)
- Transplantation (AREA)
- Chemical & Material Sciences (AREA)
- Vascular Medicine (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99969147A EP1112480A1 (de) | 1998-09-12 | 1999-09-07 | Verfahren zum prüfen keramischer pfanneneinsätze von hüftgelenk-endoprothesen |
US09/786,909 US6564647B1 (en) | 1998-09-12 | 1999-09-07 | Method for testing ceramic socket inserts of hip joint endoprostheses |
JP2000570553A JP2002525569A (ja) | 1998-09-12 | 1999-09-07 | 股関節・体内人工装具のセラミック製のソケットインサートを検査する方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19841826.4 | 1998-09-12 | ||
DE19841826A DE19841826B4 (de) | 1998-09-12 | 1998-09-12 | Verfahren zum Prüfen keramischer Pfanneneinsätze von Hüftgelenk-Endoprothesen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000016066A1 true WO2000016066A1 (de) | 2000-03-23 |
Family
ID=7880772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/006559 WO2000016066A1 (de) | 1998-09-12 | 1999-09-07 | Verfahren zum prüfen keramischer pfanneneinsätze von hüftgelenk-endoprothesen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6564647B1 (de) |
EP (1) | EP1112480A1 (de) |
JP (1) | JP2002525569A (de) |
DE (1) | DE19841826B4 (de) |
WO (1) | WO2000016066A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1449501A1 (de) * | 2003-02-20 | 2004-08-25 | Saphirwerk Industrieprodukte AG | Testvorrichtung für Hüftgelenk-Endoprothese |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007170969A (ja) * | 2005-12-21 | 2007-07-05 | Niigata Univ | 関節免荷具検査装置 |
US7493828B2 (en) * | 2006-08-02 | 2009-02-24 | Orthopaedic Research Laboratories | Simulator for evaluating artifical joint specimens and associated method |
WO2012144606A1 (ja) | 2011-04-22 | 2012-10-26 | 公立大学法人首都大学東京 | 強度保証試験方法及びそれに用いる装置 |
RU2628654C2 (ru) * | 2012-02-16 | 2017-08-21 | Керамтек Гмбх | Способ проверки керамических шаровидных головок для протезов тазобедренного сустава |
CA2866562A1 (en) | 2012-03-06 | 2013-09-12 | Ceramtec Gmbh | Device for testing a ceramic socket insert for hip joint implants |
CN103908360B (zh) * | 2014-03-28 | 2016-01-20 | 浙江海圣医疗器械有限公司 | 一种氧化铝陶瓷股骨头保证试验装置及使用方法 |
DE102014119348A1 (de) * | 2014-12-22 | 2016-06-23 | Aesculap Ag | Medizinisches Kraftmesssystem |
CN109288615B (zh) * | 2018-11-12 | 2024-02-23 | 天津理工大学 | 骨骼髓腔预紧力加载监测装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1322680A (en) * | 1971-04-23 | 1973-07-11 | Benoist Girard Cie Sa | Prosthesis |
DE2418956B1 (de) * | 1974-04-19 | 1975-04-24 | Michael Dipl.-Ing. 8000 Muenchen Ungethuem | Gelenksimulator zum Testen von Gelenkprothesen, insbesondere von Totalendoprothesen für das Hüftgelenk, und Fixationsvorrichtung zum Einbetten der Gelenkpfanne in den Pfannenadapter des Gelenksimulators |
DE2728007B1 (de) * | 1977-06-22 | 1978-08-03 | Michael Dr Ungethuem | Simulator zum Testen von Totalendoprothesen fuer das Hueftgelenk |
DE3602569C1 (de) * | 1986-01-29 | 1986-09-04 | orthoplant Endoprothetik GmbH, 2800 Bremen | Vorrichtung zum Prüfen der Verankerungssicherheit von künstlichen Hüftpfannen |
US5123278A (en) * | 1991-02-19 | 1992-06-23 | Ball Corporation | Pressure tester and method |
DE19718615A1 (de) * | 1996-07-06 | 1998-01-08 | Cerasiv Gmbh | Verfahren zum Prüfen von keramischen Pfannen für Hüftgelenkendoprothesen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3618364A (en) * | 1969-09-02 | 1971-11-09 | Creare Inc | Method and apparatus for testing powdered compacts |
US5476211A (en) * | 1993-11-16 | 1995-12-19 | Form Factor, Inc. | Method of manufacturing electrical contacts, using a sacrificial member |
FR2706284B1 (fr) * | 1993-06-17 | 1995-09-29 | Roux Christiane | Prothèse cotyloïdienne, notamment pour articulation coxo-fémorale. |
DE4411508C2 (de) * | 1994-04-02 | 2002-02-07 | Cerasiv Gmbh | Vorrichtung zum Prüfen von keramischen Hüftgelenkkugeln |
JP2000514324A (ja) * | 1996-07-06 | 2000-10-31 | セラシヴ ゲゼルシャフト ミット ベシュレンクテル ハフツング イノヴェイティヴズ ケラミク―エンジニアリング | 股関節エンドプロテーゼのためのセラミック寛骨臼を検査する方法 |
-
1998
- 1998-09-12 DE DE19841826A patent/DE19841826B4/de not_active Expired - Fee Related
-
1999
- 1999-09-07 US US09/786,909 patent/US6564647B1/en not_active Expired - Fee Related
- 1999-09-07 JP JP2000570553A patent/JP2002525569A/ja active Pending
- 1999-09-07 EP EP99969147A patent/EP1112480A1/de not_active Withdrawn
- 1999-09-07 WO PCT/EP1999/006559 patent/WO2000016066A1/de not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1322680A (en) * | 1971-04-23 | 1973-07-11 | Benoist Girard Cie Sa | Prosthesis |
DE2418956B1 (de) * | 1974-04-19 | 1975-04-24 | Michael Dipl.-Ing. 8000 Muenchen Ungethuem | Gelenksimulator zum Testen von Gelenkprothesen, insbesondere von Totalendoprothesen für das Hüftgelenk, und Fixationsvorrichtung zum Einbetten der Gelenkpfanne in den Pfannenadapter des Gelenksimulators |
DE2728007B1 (de) * | 1977-06-22 | 1978-08-03 | Michael Dr Ungethuem | Simulator zum Testen von Totalendoprothesen fuer das Hueftgelenk |
DE3602569C1 (de) * | 1986-01-29 | 1986-09-04 | orthoplant Endoprothetik GmbH, 2800 Bremen | Vorrichtung zum Prüfen der Verankerungssicherheit von künstlichen Hüftpfannen |
US5123278A (en) * | 1991-02-19 | 1992-06-23 | Ball Corporation | Pressure tester and method |
DE19718615A1 (de) * | 1996-07-06 | 1998-01-08 | Cerasiv Gmbh | Verfahren zum Prüfen von keramischen Pfannen für Hüftgelenkendoprothesen |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1449501A1 (de) * | 2003-02-20 | 2004-08-25 | Saphirwerk Industrieprodukte AG | Testvorrichtung für Hüftgelenk-Endoprothese |
US6901811B2 (en) | 2003-02-20 | 2005-06-07 | Saphirwerk Industrieprodukte Ag | Test device for femoral head prosthesis |
Also Published As
Publication number | Publication date |
---|---|
EP1112480A1 (de) | 2001-07-04 |
JP2002525569A (ja) | 2002-08-13 |
US6564647B1 (en) | 2003-05-20 |
DE19841826A1 (de) | 2000-03-16 |
DE19841826B4 (de) | 2008-06-19 |
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