IT1049104B - Prosthetic articulated joint esp hip joint - uses spherical ceramic ball force-fitted on metal shank extension of bone - Google Patents
Prosthetic articulated joint esp hip joint - uses spherical ceramic ball force-fitted on metal shank extension of boneInfo
- Publication number
- IT1049104B IT1049104B IT1285575A IT1285575A IT1049104B IT 1049104 B IT1049104 B IT 1049104B IT 1285575 A IT1285575 A IT 1285575A IT 1285575 A IT1285575 A IT 1285575A IT 1049104 B IT1049104 B IT 1049104B
- Authority
- IT
- Italy
- Prior art keywords
- male end
- cavity
- joint
- bone
- ball
- Prior art date
Links
Landscapes
- Prostheses (AREA)
Abstract
A prosthetic, articulated joint esp. hip joint is of the type in which a metal tang is fixed into an existing bone, e.g. Femur, while a metal shank integral with the than tang extends from the bone to present a conically tapered male end which fits tightly into a correspondingly-tapered female cavity in a spherical ball intended to articulate in a natural or artificial socket; the ball is made of an oxidised ceramic matl. contg. >=99.7% of Al2O3, the oxide powder having a grain size 10 mu and a specific gravity >3.90; the side slant of the male end is the same as that of the female cavity and is between 1:10 - 1:20; and the surface region of the male end is deformable by pressure and/or heat, and/or the ball, cavity surface is profiled to deform the surface region of the male end as it mates with the cavity. The male end is pref. hollow with wall thickness between 2 and 7 mm. the joint will withstand sterilising temps. without fracture of the ceramic and is good for many years of user wear without danger of detachment of male end from ball cavity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2451275A DE2451275C2 (en) | 1974-10-29 | 1974-10-29 | Head part of a hip joint prosthesis to be implanted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1049104B true IT1049104B (en) | 1981-01-20 |
Family
ID=5929440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT1285575A IT1049104B (en) | 1974-10-29 | 1975-10-29 | Prosthetic articulated joint esp hip joint - uses spherical ceramic ball force-fitted on metal shank extension of bone |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS58162817U (en) |
| ES (1) | ES442150A1 (en) |
| IT (1) | IT1049104B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084605B2 (en) * | 1986-10-23 | 1996-01-24 | 京セラ株式会社 | Artificial hip joint |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3713860A (en) * | 1970-08-31 | 1973-01-30 | Atomic Energy Commission | Bone substitute |
| US3848272A (en) * | 1972-01-13 | 1974-11-19 | United States Surgical Corp | Artificial hip joint |
-
1975
- 1975-10-28 ES ES442150A patent/ES442150A1/en not_active Expired
- 1975-10-29 IT IT1285575A patent/IT1049104B/en active
-
1983
- 1983-02-28 JP JP2730583U patent/JPS58162817U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| ES442150A1 (en) | 1977-03-16 |
| JPS58162817U (en) | 1983-10-29 |
| JPH0122656Y2 (en) | 1989-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19941026 |