EP0329239A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical aid endowed with osteotropic activity
Assignee: Individual
•
Filing: 1989-02-13
•
Granted: —
•
Expires: 2009-02-13
Abstract
Abstract The surgical aid endowed with osteotropic activity comprises a base and a suspended substance constituting the active element disperded in the base. The active element is constituted by granular, ceramic hydroxy-apatite, and the base is gelatine of pharmacologic grade in a pure state, to which glycerol is possibly added. The aid is used in anhydrous phase, and as thin sheets and filaments, the flexibility of which increases with increasing percentage of glycerol in the base.
Inventors
- 👤 Giancarlo Foresti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 14:52
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/40; A61L27/44; A61L27/46; A61L2/00; A61L2/02; A61L2/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
Surgical aid endowed with an osteotropic activity, characterized in that it comprises a base and a suspended substance, which constitutes the active element, with said base being constituted by gelatine of pharmacologic grade, in a pure state, and the suspended matter being constituted by ceramic hydroxy-apatite dispersed in the base.
Claim 2
Dependent Claim
50 words
Surgical aid endowed with an osteotropic activity, characterized in that it comprises a base and a suspended substance, which constitutes the active element, with said base being constituted by gelatine of pharmacologic grade, in a pure state, and the suspended matter being constituted by ceramic hydroxy-apatite dispersed in the base.
Claim 3
Dependent Claim
12 words
Aid according to claim 1, characterized in that said aid contains glycerol.
Claim 4
Dependent Claim
81 words
Aid according to claim 2, characterized in that two phases thereof are provided: an anhydrous phase and a hydrate phase, with said anhydrous phase substantially comprising: - hydroxy-apatite 70.00% - gel 15.05% - glycerol 14.04% - water 0.91% and said hydrate phase substantially comprising: - hydroxy-apatite 61.35% - gel 13.56% - glycerol 12.65% - water 12.44% 4. Aid according to claim 3, characterized in that the percentage of glycerol is variable relatively to the gel percentage, by a value of ±4%.
Claim 5
Dependent Claim
27 words
Aid according to claim 3, characterized in that hydroxy-apatite is as granules, the diameter of which is comprised within the range of from 0.5 to 1.8 mm.
Claim 6
Dependent Claim
18 words
Aid according to claim 3, characterized in that in the anhydrous state it is both elastic and flexible.
Claim 7
Dependent Claim
86 words
Process for the production of a surgical aid, characterized in that it comprises - a first step during which the ingredients are mixed, with a hydrate phase being obtained eventually, the percentages of which are identical to those as stated in claim 3, - a second step during which a drying is carried out, in order to obtain an anhydrous phase, - a third sted during which the product is given the shape of thin sheets and/or filaments, - a fourth step of sterilization and packaging.
Claim 8
Dependent Claim
24 words
Process according to claim 6, characterized in that the drying step is carried out at a temperature lower than 40°C, and under vacuum conditions.
Claim 9
Dependent Claim
18 words
Process according to claim 6, characterized in that the sterilization is carried out by irradiation with gamma rays.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.