CA1231203A - Hip joint socket for cement-free anchoring in the pelvis - Google Patents
Hip joint socket for cement-free anchoring in the pelvisInfo
- Publication number
- CA1231203A CA1231203A CA000467909A CA467909A CA1231203A CA 1231203 A CA1231203 A CA 1231203A CA 000467909 A CA000467909 A CA 000467909A CA 467909 A CA467909 A CA 467909A CA 1231203 A CA1231203 A CA 1231203A
- Authority
- CA
- Canada
- Prior art keywords
- socket
- hip joint
- exterior surface
- arcs
- equatorial plane
- 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
Links
Classifications
-
- 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
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
- A61F2002/30662—Ball-and-socket joints with rotation-limiting means
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
-
- 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
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3456—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped ellipsoidal or having a flattened polar region
-
- 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
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3459—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped made of different partially-spherical portions
Abstract
ABSTRACT OF THE DISCLOSURE
A hip joint socket for cement-free anchoring in the pelvis includes a socket member with a hemispherical exterior sur-face which is flattened at its apex region and a socket which is sherical-symmetrical relative to the rotational axis of symmetry of the exterior surface.
The exterior surface of the socket member projects rimless above the equatorial plane of the socket and has the form of a regular cylinder beyond the equatorial plane.
A hip joint socket for cement-free anchoring in the pelvis includes a socket member with a hemispherical exterior sur-face which is flattened at its apex region and a socket which is sherical-symmetrical relative to the rotational axis of symmetry of the exterior surface.
The exterior surface of the socket member projects rimless above the equatorial plane of the socket and has the form of a regular cylinder beyond the equatorial plane.
Description
3~ 3 Tlle present invention is directed to a hip joint socket for cement-free anchoring in the pelvis,made of plastic material and it includes a socket member with a hemispherical exte-rior surface which is flattened at its apex region and a socl<et which is spherical-symmetrical relative to the ro-tational axis of symmetry of said exterior surface.
For artificial hip joint sockets there is the general re-quirement for dimensioning the socket to be implanted as a foreign body into the pelvis as small as possible for two reasons. First for limiting the inevitable losses of bone substance and second for reducing the volume of the artifical foreign body to the absolute minimum.
Tal<ing into account these arguments sockets with an appro-ximatively hemispherical shape are to be preferred to those with a conical or cylindrical (note German Offenlegungs-schrift 23 14 175) basic shape.Ilip joint socl<ets of the aforementioned type are there-fore known for implantation into small, shallow acetabula (note the leaflets from ALLO PRO 'IDie Huftgelenk-Endopro-these,System Weber-Stuhmer'l of 1977 and from AESCULAP 113-C
10 77/4, page 12 IlTotal-Endoprothesen fur das ~luftgelenkl').
All these sockets are designed for anchoring with the aid of bone cement. They are not suitable for cement-free im-plantation having neither an adequate structure of the outer surface, e.g. an exterior thread, nor anchoring pegs or screws for a cement-free fixation, nor can they be clam-ped into the pelvis.
'~3~ 3 With a cement-free anchoring the implanted socket is held wi-th a certain prestress in the pelvls. The clamping of the socket member occurs thereby at the lateral surface, i.e. at the equatorial regions. With the aforementioned prior art sockets the clamping eEfect is prevented due to the flange type rim of the socket.
Furthermore, the fixation by clamping is insufficient with these known socke-ts because theoretically it takes place only along a line in the equatorial plane.
Therefore the present invention provides a hip joint socket with a flattened apex region suitable for cement-free anchoring by equatorial clamping.
In accordance with one aspect of thereof the present invention provides in a hip joint socket for cement-free pre-stressed anchoring in a prepared cavity in the pelvis, made of plastic material, comprising a socket member with a hemispherical exterior surface which is flattened at its apex region and a socket which is spherical-symmetrical relative to the rotational axis of symmetry of said exterior surface, the improvement in which said exterior surface of said socket member projects rlm-less beyond the equatorial plane of said socket with extending tangent lines forming a regular cylinder beyond said equatorial plane thereby increasing the clamping effect of said socket within the pelvls by the enlarged area of surface contact of the exterior surface near the equatorial plane of said socket and said flattened apex region is restorable at least approximately to a hemisphere by pre-stressing the equatorial region of said socket member upon insertion into said cavity, said cavity having a slightly smaller diameter than said socket.
In one embodiment of the present invention the profile of said exterior surface of said socket member is formed by at least two types of arcs of circles of which a first of said arcs \ - 3 -
For artificial hip joint sockets there is the general re-quirement for dimensioning the socket to be implanted as a foreign body into the pelvis as small as possible for two reasons. First for limiting the inevitable losses of bone substance and second for reducing the volume of the artifical foreign body to the absolute minimum.
Tal<ing into account these arguments sockets with an appro-ximatively hemispherical shape are to be preferred to those with a conical or cylindrical (note German Offenlegungs-schrift 23 14 175) basic shape.Ilip joint socl<ets of the aforementioned type are there-fore known for implantation into small, shallow acetabula (note the leaflets from ALLO PRO 'IDie Huftgelenk-Endopro-these,System Weber-Stuhmer'l of 1977 and from AESCULAP 113-C
10 77/4, page 12 IlTotal-Endoprothesen fur das ~luftgelenkl').
All these sockets are designed for anchoring with the aid of bone cement. They are not suitable for cement-free im-plantation having neither an adequate structure of the outer surface, e.g. an exterior thread, nor anchoring pegs or screws for a cement-free fixation, nor can they be clam-ped into the pelvis.
'~3~ 3 With a cement-free anchoring the implanted socket is held wi-th a certain prestress in the pelvls. The clamping of the socket member occurs thereby at the lateral surface, i.e. at the equatorial regions. With the aforementioned prior art sockets the clamping eEfect is prevented due to the flange type rim of the socket.
Furthermore, the fixation by clamping is insufficient with these known socke-ts because theoretically it takes place only along a line in the equatorial plane.
Therefore the present invention provides a hip joint socket with a flattened apex region suitable for cement-free anchoring by equatorial clamping.
In accordance with one aspect of thereof the present invention provides in a hip joint socket for cement-free pre-stressed anchoring in a prepared cavity in the pelvis, made of plastic material, comprising a socket member with a hemispherical exterior surface which is flattened at its apex region and a socket which is spherical-symmetrical relative to the rotational axis of symmetry of said exterior surface, the improvement in which said exterior surface of said socket member projects rlm-less beyond the equatorial plane of said socket with extending tangent lines forming a regular cylinder beyond said equatorial plane thereby increasing the clamping effect of said socket within the pelvls by the enlarged area of surface contact of the exterior surface near the equatorial plane of said socket and said flattened apex region is restorable at least approximately to a hemisphere by pre-stressing the equatorial region of said socket member upon insertion into said cavity, said cavity having a slightly smaller diameter than said socket.
In one embodiment of the present invention the profile of said exterior surface of said socket member is formed by at least two types of arcs of circles of which a first of said arcs \ - 3 -
2~3 consti-tutes said profile of said exterior surface ln said apex region of said socket member with second arcs of the other type extending to opposite sides thereoE, said first arc having lts center on said rotational axis of symmetry of said outer surface with a radius which i5 at least 2 times longer than the radii of said second arcs, said second arcs having centers located on both sides of said rotational axis of symmetry in said equatorial plane of said socket and spaced a distance apart. Suitably said radius of the said first arc of said circle forming said apex region of said profile of said outer surface is 2 to 4 times longer than said radii of said second arcs. Desirably said radius of the said first arc of said circle forming said apex region of said profile of said outer surface is 2.5 to 3.5 times longer than said radii of said second arcs.
In ano-ther aspect thereof the present invention pro-vides in a hip joint socket for cement-free pre-stressed anchor-ing in a prepared cavity in the pelvis, made of plastic material, comprising a socket member with a hemispherical exterior surface which is flattened at its apex region and a socket which is spherical-symmetrical relative to the rotational axis of symmetry of said exterior surface, the improvement in which said exterior surface of said socket member pro;ects rimless beyond the equato-rial plane of said socket thereby increasing the clamping effect of said socket within the pelvis by the enlarged area of surface contact of the ex-terior surface near the equatorial plane of said socket and said flattened apex region is restorable at least approximately to a hemisphere by pre-stressing the equatorial region of said socket member upon insertion into said cavity, said cavity having a slightly smaller diameter than said socket.
Thus, in accordance with the present invention the exterior surface of the socket member pro;ects rimless above the equatorial plane of the socket and has the form of a regular cylinder beyond the equatorial plane.
\ _ 4 _ ~.~233L203 The flattening in the apex region and the rimless shape of the ex-terior surface of the socke-t member made of a plastics material allow to implant the socket "deeply" into the prepared pelvis, whereby the cylindrical projection increases the clamping effect by enlarging the contact line -to a contact area, because the spherical cutter (grater) produces a cylindrical contour of the cut-ting as soon as it penetrates into the bone beyond its equatorial plane.
If necessary, the exterior surface of the socket member may be provided with a structure, preferably with a ribbed struc-ture which enhances the ingrowth of bone substance. The socket member is made of a plastics material preferably of polyethylene of the classification HDPE (high density polyethylene) and UHMW
(ultra-high molecular weight).
The present invention will be further illustrated by way of the accompanying drawing, in which:-The sole Fig is a section through -the rotational axis of symmetry of -the hip joint socket according to one embodiment of the present invention.
As illustrated in the Fig. the exterior shape of the socket member 1 of the hip joint socket is formed as a rotational solid generated by rotation of the profile 2 around the rota-tional axis of symmetry 3; the socket 5 is formed by a hemlspher-ical cavity which is also symmetrical with regard to the rota-tional axis of symmetry 3.
The rimless socket member 1 has a diameter D measured in its equatorial plane 4. This diameter D is also the generat-ing diameter of the exterior surface of the socket, which is located beyond the equatorial plane 4.
The basis for the exterior surface of the socket member - 4a -f~3~2C~3 1 is formed by a sphere with the radius R' = D/2; this semispher-ical surface is flattened at its apex region by the amount d R' - h.
Therefore the profile 2 of the socket member 1 is com-posed by at least three different curves. Adjacent to the afore-mentioned regular cylindrical portion beyond the equatorial plane 4 the profile 2 is formed - from the equatorial plane -- 4b -~LZ3~3 by two arcs of circles Kl and K2 of which one has the radius Rl which can be calculated in a first approximation o e Symmetrical to the mirror plane of the socket member 1,con-taining the rotational axis of symmetry 3, the centers Mlof the arcs of circles Kl for the equatorial regions of the profile 2 are located in the equatorial plane 4.
The clistance between the two centers Ml is a and may vary, according to the preferred embodiment shown in the Fig., from l to 5 mm.
In the preferred embodiment the profile 2 extends from the equatorial plane 4 to the points S according to the arcs of circles Kl. The arc between the two points S is formed by a second arc of circle K2 with the radius R2 which is approximately 3 times longer than the radius Rl. The cen-ter M2 of the arc of circle Kl is located on the rotational axis of symmetry 3.
For the dimensioning of the hip joint socket the diameter D and the"flattening" d are given as basic parameters, allowing within certain limits to choose the radii Rl and R2, determining the distance a.
In ano-ther aspect thereof the present invention pro-vides in a hip joint socket for cement-free pre-stressed anchor-ing in a prepared cavity in the pelvis, made of plastic material, comprising a socket member with a hemispherical exterior surface which is flattened at its apex region and a socket which is spherical-symmetrical relative to the rotational axis of symmetry of said exterior surface, the improvement in which said exterior surface of said socket member pro;ects rimless beyond the equato-rial plane of said socket thereby increasing the clamping effect of said socket within the pelvis by the enlarged area of surface contact of the ex-terior surface near the equatorial plane of said socket and said flattened apex region is restorable at least approximately to a hemisphere by pre-stressing the equatorial region of said socket member upon insertion into said cavity, said cavity having a slightly smaller diameter than said socket.
Thus, in accordance with the present invention the exterior surface of the socket member pro;ects rimless above the equatorial plane of the socket and has the form of a regular cylinder beyond the equatorial plane.
\ _ 4 _ ~.~233L203 The flattening in the apex region and the rimless shape of the ex-terior surface of the socke-t member made of a plastics material allow to implant the socket "deeply" into the prepared pelvis, whereby the cylindrical projection increases the clamping effect by enlarging the contact line -to a contact area, because the spherical cutter (grater) produces a cylindrical contour of the cut-ting as soon as it penetrates into the bone beyond its equatorial plane.
If necessary, the exterior surface of the socket member may be provided with a structure, preferably with a ribbed struc-ture which enhances the ingrowth of bone substance. The socket member is made of a plastics material preferably of polyethylene of the classification HDPE (high density polyethylene) and UHMW
(ultra-high molecular weight).
The present invention will be further illustrated by way of the accompanying drawing, in which:-The sole Fig is a section through -the rotational axis of symmetry of -the hip joint socket according to one embodiment of the present invention.
As illustrated in the Fig. the exterior shape of the socket member 1 of the hip joint socket is formed as a rotational solid generated by rotation of the profile 2 around the rota-tional axis of symmetry 3; the socket 5 is formed by a hemlspher-ical cavity which is also symmetrical with regard to the rota-tional axis of symmetry 3.
The rimless socket member 1 has a diameter D measured in its equatorial plane 4. This diameter D is also the generat-ing diameter of the exterior surface of the socket, which is located beyond the equatorial plane 4.
The basis for the exterior surface of the socket member - 4a -f~3~2C~3 1 is formed by a sphere with the radius R' = D/2; this semispher-ical surface is flattened at its apex region by the amount d R' - h.
Therefore the profile 2 of the socket member 1 is com-posed by at least three different curves. Adjacent to the afore-mentioned regular cylindrical portion beyond the equatorial plane 4 the profile 2 is formed - from the equatorial plane -- 4b -~LZ3~3 by two arcs of circles Kl and K2 of which one has the radius Rl which can be calculated in a first approximation o e Symmetrical to the mirror plane of the socket member 1,con-taining the rotational axis of symmetry 3, the centers Mlof the arcs of circles Kl for the equatorial regions of the profile 2 are located in the equatorial plane 4.
The clistance between the two centers Ml is a and may vary, according to the preferred embodiment shown in the Fig., from l to 5 mm.
In the preferred embodiment the profile 2 extends from the equatorial plane 4 to the points S according to the arcs of circles Kl. The arc between the two points S is formed by a second arc of circle K2 with the radius R2 which is approximately 3 times longer than the radius Rl. The cen-ter M2 of the arc of circle Kl is located on the rotational axis of symmetry 3.
For the dimensioning of the hip joint socket the diameter D and the"flattening" d are given as basic parameters, allowing within certain limits to choose the radii Rl and R2, determining the distance a.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a hip joint socket for cement-free pre-stressed anchoring in a prepared cavity in the pelvis, made of plastic material, comprising a socket member with a hemispherical exte-rior surface which is flattened at its apex region and a socket which is spherical-symmetrical relative to the rotational axis of symmetry of said exterior surface, the improvement in which said exterior surface of said socket member projects rimless beyond the equatorial plane of said socket with extending tangent lines forming a regular cylinder beyond said equatorial plane thereby increasing the clamping effect of said socket within the pelvis by the enlarged area of surface contact of the exterior surface near the equatorial plane of said socket and said flattened apex region is restorable at least approximately to a hemisphere by pre-stressing the equatorial region of said socket member upon insertion into said cavity, said cavity having a slightly smaller diameter than said socket.
2. A hip joint socket as claimed in claim 1, wherein the profile of said exterior surface of said socket member is formed by at least two types of arcs of circles of which a first of said arcs constitutes said profile of said exterior surface in said apex region of said socket member with second arcs of the other type extending to opposite sides thereof, said first arc having its center on said rotational axis of symmetry of said outer surface with a radius which is at least 2 times longer than the radii of said second arcs, said second arcs having centers located on both sides of said rotational axis of symmetry in said equatorial plane of said socket and spaced a distance apart.
3. A hip joint socket as claimed in claim 2, wherein said radius of said first arc is 3 times longer than said radii of said second arcs.
4. A hip joint socket as claimed in claim 2, wherein said radius of the said first arc of said circle forming said apex region of said profile of said outer surface is 2 to 4 times longer than said radii of said second arcs.
5. A hip joint socket as claimed in claim 2, wherein said radius of the said first arc of said circle forming said apex region of said profile of said outer surface is 2.5 to 3.5 times longer than said radii of said second arcs.
6. A hip joint socket as claimed in claim 2, 4 or 5, wherein the distance of said centers of said second arcs forming said equatorial regions of said profile of said outer surface is between 1 and 5 mm.
7. A hip joint socket as claimed in claim 1, 2 or 3, wherein said exterior surface of said socket member has a ribbed structure.
8. A hip joint socket as claimed in claim 6, wherein said exterior surface of said socket member has a ribbed struc-ture.
9. In a hip joint socket for cement-free pre-stressed anchoring in a prepared cavity in the pelvis, made of plastic material, comprising a socket member with a hemispherical exte-rior surface which is flattened at its apex region and a socket whcih is spherical-symmetrical relative to the rotational axis of symmetry of said exterior surface, the improvement in which said exterior surface of said socket member projects rimless beyond the equatorial plane of said socket thereby increasing the clamp-ing effect of said socket within the pelvis by the enlarged area of surface contact of the exterior surface near the equatorial plane of said socket and said flattened apex region is restorable at least approximately to a hemisphere by pre-stressing the equa-torial region of said socket member upon insertion into said cav-ity, said cavity having a slightly smaller diameter than said socket.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3341723A DE3341723C1 (en) | 1983-11-18 | 1983-11-18 | Acetabular cup |
| DEP3341723.1-35 | 1983-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231203A true CA1231203A (en) | 1988-01-12 |
Family
ID=6214655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000467909A Expired CA1231203A (en) | 1983-11-18 | 1984-11-15 | Hip joint socket for cement-free anchoring in the pelvis |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4666448A (en) |
| CA (1) | CA1231203A (en) |
| CH (1) | CH664687A5 (en) |
| DE (1) | DE3341723C1 (en) |
| FR (1) | FR2555043B1 (en) |
| IT (1) | IT1177187B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH670949A5 (en) * | 1986-09-23 | 1989-07-31 | Sulzer Ag | |
| CH673087A5 (en) * | 1987-10-28 | 1990-02-15 | Sulzer Ag | |
| CH673765A5 (en) * | 1988-02-26 | 1990-04-12 | Sulzer Ag | |
| US4892549B1 (en) * | 1989-01-31 | 1999-10-05 | Stryker Corp | Dual-radius acetubular cup component |
| DE4232313C1 (en) * | 1992-09-26 | 1994-04-28 | Kubein Meesenburg Dietmar | Artificial joint as an endoprosthesis for the human shoulder joint |
| US5443519A (en) * | 1993-04-22 | 1995-08-22 | Implex Corporation | Prosthetic ellipsoidal acetabular cup |
| DE59308786D1 (en) * | 1993-08-30 | 1998-08-20 | Sulzer Orthopaedie Ag | Multi-part artificial socket and hip prosthesis with such a socket |
| NL9302200A (en) * | 1993-12-16 | 1995-07-17 | Endocare Ag | Elliptical acetabulum component for a hip prosthesis. |
| DE4408527B4 (en) * | 1994-03-14 | 2006-11-30 | Hörmansdörfer, Gerd | Screw-in acetabulum with curved outer contour |
| US5676704A (en) * | 1995-11-27 | 1997-10-14 | Smith & Nephew, Inc. | Acetabular cup body prosthesis |
| US5782928A (en) * | 1995-11-27 | 1998-07-21 | Smith & Nephew, Inc. | Acetabular cup body prosthesis |
| US5931870A (en) | 1996-10-09 | 1999-08-03 | Smith & Nephew, Inc. | Acetabular ring prosthesis with reinforcement buttress |
| DE69727953T2 (en) | 1996-10-23 | 2005-03-31 | Smith & Nephew, Inc., Memphis | PAN FOR HIP JOINT PROSTHESIS |
| DE19731442A1 (en) * | 1997-07-22 | 1999-02-11 | Plus Endoprothetik Ag | Cup for a joint endoprosthesis |
| CH692650A5 (en) * | 1998-02-26 | 2002-09-13 | Intraplant Ag | The outer shell of a hip endoprosthesis. |
| CA2270861C (en) | 1998-05-22 | 2006-08-29 | Michael B. Sheldon | Acetabular cup assembly with selected bearing |
| AUPQ070399A0 (en) * | 1999-06-02 | 1999-06-24 | Cryptych Pty Ltd | Acetabular component of total hip replacement assembly |
| FR2887136B1 (en) * | 2005-06-17 | 2007-09-07 | C2M Implants | COTILOID IMPLANT OF HIP PROSTHESIS |
| US20070106392A1 (en) * | 2005-11-08 | 2007-05-10 | Howmedica Osteonics Corp. | Acetabular cup locking mechanism |
| JP5296667B2 (en) | 2006-03-20 | 2013-09-25 | スミス アンド ネフュー インコーポレーテッド | Acetabular cup assembly for multiple bearing elements |
| US20070260256A1 (en) * | 2006-05-05 | 2007-11-08 | Beaule Paul E | Surgical instrument tray, hip resurfacing kit, and method of resurfacing a femoral head to preserve femoral head vascularity |
| US8123815B2 (en) | 2008-11-24 | 2012-02-28 | Biomet Manufacturing Corp. | Multiple bearing acetabular prosthesis |
| US8308810B2 (en) | 2009-07-14 | 2012-11-13 | Biomet Manufacturing Corp. | Multiple bearing acetabular prosthesis |
| FR2958533B1 (en) * | 2010-04-08 | 2012-03-23 | Jean Claude Cartillier | RANGE OF COTYLOID IMPLANTS OF DIFFERENT SIZES |
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|---|---|---|---|---|
| US3140712A (en) * | 1961-08-17 | 1964-07-14 | William S Hunter | Articulated joints |
| DE2139878C3 (en) * | 1971-08-09 | 1981-06-04 | Hildebrandt, Jürgen J., Dipl.-Phys., 8000 München | Hip joint prosthesis for implantation in the human body |
| GB1409051A (en) * | 1971-09-24 | 1975-10-08 | Nat Research Department Corp | Hip joint prostheses |
| US3813699A (en) * | 1973-01-15 | 1974-06-04 | R Giliberty | Prosthetic hip joint |
| DE7500535U (en) * | 1975-01-10 | 1975-07-10 | Howmedica International Inc | Joint socket |
| US4159544A (en) * | 1977-11-28 | 1979-07-03 | Zafmedico Corporation | Hip joint prosthesis |
| FR2413078A1 (en) * | 1978-01-03 | 1979-07-27 | Serole Michelle | Hip prosthesis made of composite materials - has low wt. which assists swimming and can also be used for other body joints |
| FR2466239B1 (en) * | 1979-10-03 | 1986-06-27 | Teinturier Pierre | HIP PROSTHESIS AND ITS IMPLEMENTATION |
| CH648747A5 (en) * | 1981-02-20 | 1985-04-15 | Sulzer Ag | JOINT PAN, ANCHORABLE IN THE POOL. |
-
1983
- 1983-11-18 DE DE3341723A patent/DE3341723C1/en not_active Expired
-
1984
- 1984-10-31 CH CH5205/84A patent/CH664687A5/en not_active IP Right Cessation
- 1984-11-14 IT IT23567/84A patent/IT1177187B/en active
- 1984-11-15 CA CA000467909A patent/CA1231203A/en not_active Expired
- 1984-11-16 US US06/672,289 patent/US4666448A/en not_active Expired - Lifetime
- 1984-11-16 FR FR848417516A patent/FR2555043B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2555043B1 (en) | 1991-11-08 |
| CH664687A5 (en) | 1988-03-31 |
| US4666448A (en) | 1987-05-19 |
| IT1177187B (en) | 1987-08-26 |
| FR2555043A1 (en) | 1985-05-24 |
| IT8423567A1 (en) | 1986-05-14 |
| IT8423567A0 (en) | 1984-11-14 |
| DE3341723C1 (en) | 1985-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |