IMPLANTABLE VALVE PROSTHESIS AND METHOD FOR MANUFACTURING SUCH A VALVE
First Claim
1. Implantable valve prosthesis (40), comprising at least one valve leaflet (44) and made of a material structure of unidirectional reinforcing elements of drawn ultra high molecular weight polyolefin (11, 110, 111), extending in at least two directions, wherein the modulus of elasticity of the polyolefin reinforcing elements is at least 60 GPa.
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Accused Products
Abstract
The invention relates to an implantable valve prosthesis, optionally comprising a support structure and at least one valve leaflet. The valve prosthesis comprises a material structure of unidirectional reinforcing elements of drawn ultra high molecular weight polyolefin, extending in at least two directions, wherein the modulus of elasticity of the polyolefin reinforcing elements is at least 60 GPa. The invention furthermore relates to a method for manufacturing such an implantable valve. The valve is easily manufactured and has an improved durability.
45 Citations
15 Claims
- 1. Implantable valve prosthesis (40), comprising at least one valve leaflet (44) and made of a material structure of unidirectional reinforcing elements of drawn ultra high molecular weight polyolefin (11, 110, 111), extending in at least two directions, wherein the modulus of elasticity of the polyolefin reinforcing elements is at least 60 GPa.
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13. Method of manufacturing an implantable valve prosthesis (40), comprising the steps of:
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providing a material structure (11) of unidirectional reinforcing elements (110, 111) of drawn ultra high molecular weight polyolefin, extending in at least two directions, wherein the modulus of elasticity of the polyolefin reinforcing elements is at least 60 GPa; shaping the material structure (11) in the form of at least a part of the valve prosthesis (40); and consolidating the material structure under elevated temperature and pressure.
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14. Method according to claim 14, wherein a matrix binder is applied onto the material structure and consolidated with it under elevated temperature and pressure.
Specification