Trachreal prosthesis
First Claim
1. A tracheal prosthesis shaped and configured to replace natural tracheal and bronchial segments, said tracheal prosthesis comprising:
- a plastic shaft including a lumen and means for joining free ends thereof to tracheal stumps in a person said plastic shaft comprising a thin, resilient material wall surrounded by hoops, said hoops being horseshoe-like shaped and spaced from one another in an axial direction along said plastic shaft and connected to the material wall, said horseshoe-like hoops being non-complete substantially circular collars having tapered ends.
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Accused Products
Abstract
The tracheal prosthesis is intended to replace damaged, diseased or missing tracheal and/or bronchial segments. The tracheal prosthesis comprises a plastic shaft which is embraced by hoops. The hoops 9 stabilize the thin film-like material wall. As in the case of the human trachea, the hoops leave an area of the plastic shaft uncovered so that a particularly resilient circumferential surface is obtained between the hoops, resembling the membranaceous part of the human trachea. The ends of the tracheal prosthesis are reinforced by spring elements. These spring elements ensure that the tracheal prosthesis is retained safely in the natural tracheal and/or bronchial stumps. The inner surface of the tracheal prosthesis is hydrophilized.
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Citations
13 Claims
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1. A tracheal prosthesis shaped and configured to replace natural tracheal and bronchial segments, said tracheal prosthesis comprising:
a plastic shaft including a lumen and means for joining free ends thereof to tracheal stumps in a person said plastic shaft comprising a thin, resilient material wall surrounded by hoops, said hoops being horseshoe-like shaped and spaced from one another in an axial direction along said plastic shaft and connected to the material wall, said horseshoe-like hoops being non-complete substantially circular collars having tapered ends. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A tracheal shaped and configured to replaces natural prosthesis tracheal and bronchial segments, said tracheal prosthesis comprising:
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a resilient elongate plastic shaft having a lumen defined by an inner surface, said inner surface being coated with a hydrophilic coating; means for joining free ends of the shaft with tracheal stumps; and hoop means, surrounding said shaft, configured to provide stability to said shaft and enabling the tracheal prosthesis to expand in response to increase in pressure inside the prosthesis and return to an original dimension after expansion, said hoop means comprising a plurality of deformable hoops axially spaced from one another along wherein said deformable hoops comprises non-complete substantially circular collars having tapered ends and said shaft, said resilient elongate plastic shaft being of sufficient resilience to enable uninhibited expansion of said hoop means. - View Dependent Claims (12, 13)
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Specification