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(12) Patent: | (11) CA 2416201 |
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(54) English Title: | BIOACTIVE CALCIUM PHOSPHATE COMPOSITE LAYERS ELECTROCHEMICALLY DEPOSITED ON IMPLANTS |
(54) French Title: | COUCHES COMPOSITES DE PHOSPHATE DE CALCIUM BIOACTIVES DEPOSEES ELECTROCHIMIQUEMENT SUR DES IMPLANTS |
Status: | Deemed expired |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | RIDOUT & MAYBEE LLP |
(74) Associate agent: | |
(45) Issued: | 2008-11-18 |
(86) PCT Filing Date: | 2000-07-17 |
(87) Open to Public Inspection: | 2003-01-15 |
Examination requested: | 2003-01-15 |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/EP2000/006838 |
(87) International Publication Number: | WO2002/005862 |
(85) National Entry: | 2003-01-15 |
(30) Application Priority Data: | None |
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The invention relates to calcium phosphate composite layers which are
electrochemically deposited on bone implants. Implants which are coated in
such a way are implanted without cement and are characterised by improved
growing-in behaviour. Said highly porous composite layers on implants are made
of at least two calcium phosphate phases of different solubility. The highly
porous structure of said layers facilitates the immobilisation of cells from
which new bone tissue can be made. The different solubility of the individual
layer components ensures local concentration of calcium and phosphate ions
which accelerates the incorporation process and which adapts to said process
over the course of time.
L'invention concerne des couches composites de phosphate de calcium bioactives déposées électrochimiquement sur des implants osseux. De tels implants sont implantés sans ciment et se caractérisent par un pouvoir d'ostéointégration amélioré. Lesdites couches composites ultra-poreuses destinées à des implants sont composées d'au moins deux phases de phosphate de calcium de solubilités différentes. La structure ultra-poreuse de ces couches permet de simplifier l'immobilisation de cellules à partir desquelles le tissu osseux peut se régénérer. Les solubilités différentes des composantes de couches individuelles permettent d'obtenir la concentration locale d'ions calcium et d'ions phosphate accélérant le processus de guérison et s'adaptant au processus dans le temps.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 2416201 was not found.
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Title | Date |
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Forecasted Issue Date | 2008-11-18 |
(86) PCT Filing Date | 2000-07-17 |
(85) National Entry | 2003-01-15 |
(87) PCT Publication Date | 2003-01-15 |
Examination Requested | 2003-01-15 |
(45) Issued | 2008-11-18 |
Deemed Expired | 2012-07-17 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
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Request for Examination | $400.00 | 2003-01-15 | ||
Application Fee | $300.00 | 2003-01-15 | ||
Maintenance Fee - Application - New Act | 2 | 2002-07-17 | $100.00 | 2003-01-15 |
Registration of a document - section 124 | $100.00 | 2003-04-02 | ||
Maintenance Fee - Application - New Act | 3 | 2003-07-17 | $100.00 | 2003-04-10 |
Maintenance Fee - Application - New Act | 4 | 2004-07-19 | $100.00 | 2004-05-14 |
Maintenance Fee - Application - New Act | 5 | 2005-07-18 | $200.00 | 2005-04-11 |
Maintenance Fee - Application - New Act | 6 | 2006-07-17 | $200.00 | 2006-04-07 |
Maintenance Fee - Application - New Act | 7 | 2007-07-17 | $200.00 | 2007-04-20 |
Maintenance Fee - Application - New Act | 8 | 2008-07-17 | $200.00 | 2008-04-08 |
Final Fee | $300.00 | 2008-09-03 | ||
Maintenance Fee - Patent - New Act | 9 | 2009-07-17 | $200.00 | 2009-06-09 |
Maintenance Fee - Patent - New Act | 10 | 2010-07-19 | $250.00 | 2010-07-13 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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DOT GMBH |
Past Owners on Record |
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BECKER, PETRA |
NEUMANN, HANS-GEORG |
ZEGGEL, PETER |