EP0149540A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements in or relating to bone fracture fixation plates
Assignee: Ed Geistlich Soehne AG fuer Chemische Industrie
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Filing: 1985-01-11
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Granted: —
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Expires: 2005-01-11
Abstract
Abstract A bone fracture fixation device which is substantially free from resorbable components and is capable in use of a gradual decrease in rigidity over the fracture healing period from a rigidity close to or in excess of that of the intact bone to a rigidity significantly below that of the intact bone.
Inventors
- 👤 Myron Spector
- 👤 John D. Muzzy
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61L; A61L31/00; A61L31/12; A61L31/125; A61L2430/00; A61L2430/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
28 words
A bone fracture fixation device which is substantially free from resorbable components and is capable in use of a gradual decrease in rigidity over the fracture healing period.
Claim 2
Dependent Claim
28 words
A bone fracture fixation device which is substantially free from resorbable components and is capable in use of a gradual decrease in rigidity over the fracture healing period.
Claim 3
Dependent Claim
29 words
A device as claimed in claim 1 the rigidity of which is capable of decreasing through mechanical fatigue or through softening of components by the action of body fluids.
Claim 4
Dependent Claim
33 words
A device as claimed in claim 1 composed of high strength fibre reinforced polymers containing either no coupling agent between the fibres and the polymer matrix or a coupling agent susceptible to breakdown.
Claim 5
Dependent Claim
25 words
A device as claimed in claim 1 provided with notches and/or pores which under repeated loading gradually extend to decrease the rigidity of the plate.
Claim 6
Dependent Claim
31 words
A device as claimed in claim 1 comprising at least two laminae bonded together only to a predetermined extent so that repeated loading results in progressive failure of the interlaminar bond.
Claim 7
Dependent Claim
21 words
A device as claimed in claim 5 in which the laminae are bonded by fusion of thermoplastic particles between the laminae.
Claim 8
Independent Claim
33 words
A device as claimed in any of the preceding claims which is capable of a gradual decrease in axial rigidity over the fracture healing period while its bending rigidity is not substantially reduced.
Claim 9
Dependent Claim
31 words
A device as claimed in claim 1 comprising in part a substance which softens gradually on exposure to body fluids without resorption, whereby the rigidity of the plate is gradually reduced.
Claim 10
Dependent Claim
17 words
9 . A device as claimed in claim 1 in the form of a fracture fixation plate.
Claim 11
Dependent Claim
33 words
A method of fixation of a bone fracture in which a device as claimed in claim 1 in the form of a plate is secured to the bone at points spanning said fracture.
References Cited (Backward Citations)
No citation records indexed.
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