Patent EP0094829A2 successfully refreshed from Google Patents.
EP0094829A2
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EP
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Endoprosthetic bone joint devices
Assignee: National Research Development Corp UK
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Filing: 1983-05-17
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Granted: —
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Expires: 2003-05-17
Abstract
Abstract An endoprosthetic bone joint device is secured by filamentary elements driven therethrough into penetrating engagement with bone. These elements will normally exhibit transverse flexibility; they preferably have elastic modulus similar to bone; they can be roughened or barbed for added securement; they can carry material of negative electrochemical potential relative to other parts of the device to induce bone growth intimately therewith; and they can carry material otherwise beneficial to bone growth. The device preferably also has a radiating multi-directional flange formation to engage a corresponding formation cut in the bone.
Inventors
- 👤 Richard Eddy Field
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:47
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3601; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/842; A61F2/3094; A61F2/30965; A61F2/28; A61F2002/2817; A61F2002/2821; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30118; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30383; A61F2002/30403; A61F2002/30433; A61F2002/30462; A61F2002/30535; A61F2002/30604; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/3079; A61F2002/30878; A61F2002/30886; A61F2/3609; A61F2002/3611; A61F2002/3625; A61F2002/3647; A61F2002/365; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00029; A61F2310/00179
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
26 words
An endoprosthetic bone joint device comprising a multiplicity of filamentary elements drivable through part thereof into penetrating engagement with a bone to secure the part thereto.
Claim 2
Dependent Claim
26 words
An endoprosthetic bone joint device comprising a multiplicity of filamentary elements drivable through part thereof into penetrating engagement with a bone to secure the part thereto.
Claim 3
Dependent Claim
12 words
A device according to Claim 1 wherein said elements exhibit transverse flexibility.
Claim 4
Dependent Claim
18 words
A device according to Claim 2 wherein said elements have an elastic modulus similar to that of bone.
Claim 5
Dependent Claim
28 words
A device according to Claim 1, 2 or 3 wherein said elements are roughened, barbed or otherwise formed to act against movement relative to bone when penetrated thereinto.
Claim 6
Independent Claim
25 words
A device according to any preceding claim wherein said elements are treated or formed to induce or accommodate growth of bone into intimate contact therewith.
Claim 7
Dependent Claim
25 words
A device according to Claim 5 wherein said elements are covered with or incorporate material beneficial as a substrate, nutrient or protection for bone growth.
Claim 8
Dependent Claim
30 words
A device according to Claim 5 or 6 wherein said elements are covered with or incorporate material having a negative electrochemical potential with respect to other parts of the device.
Claim 9
Independent Claim
26 words
A device according to any preceding claim wherein said elements each have an enlargement at one end thereof captively lockable between two parts of the device.
Claim 10
Dependent Claim
87 words
A device according to Claim 8 wherein one of said parts has a plate form portion having distributed thereover a plurality of transverse passageways to receive individually therethrough said elements and countersunk on one side of said portion to seat said enlargements, and the other of said parts has a surface complementary with said one side and formed with a plurality of recesses in corresponding distribution to said passageways to seat individually said enlargements therein, said two parts being securable together with said passageways and recesses superposed.
Claim 11
Independent Claim
32 words
A device according to any preceding claim wherein the first- mentioned part thereof has a bone-engaging surface with a multi-directional flange formation projecting therefrom to engage a corresponding formation cut in bone.
Claim 12
Dependent Claim
28 words
A device according to Claim 10 wherein said flange formation comprises a plurality of flange portions radiating from a central region of said surface towards the periphery thereof.
Claim 13
Dependent Claim
20 words
A device according to Claim 11 comprising a peripheral annular flange portion to embrace bone engaged by said radiating portions.
Claim 14
Independent Claim
14 words
A device according to any preceding claim wherein said elements number five to thirty.
Claim 15
Independent Claim
21 words
A device according to any preceding claim wherein said elements each have a length in the range 3 to 15 cm.
Claim 16
Independent Claim
21 words
A device according to any preceding claim wherein said elements each have a diameter in the range 0.25 to 2.0 mm.
Claim 17
Dependent Claim
23 words
A device according to Claim 9 wherein the plate form portion is provided with a part spherical surface to interface with the bone.
References Cited (Backward Citations)
No citation records indexed.
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