Multi-layered transtracheal catheter
First Claim
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1. A transtracheal catheter comprising:
- an elongated catheter body comprising;
an inner layer and means to resist kinking of said inner layer and including constructing said inner layer of a material that is soft and flexible to the extent that it will bend rather than kink when placed within a patient'"'"'s trachea for extended periods of time; and
an outer layer fused to the inner layer and comprising a material that is sufficiently hydrophobic and that has a sufficiently low coefficient of friction such that said outer layer is resistant to mucous buildup when placed in the trachea, said outer layer essentially completely covering said inner layer to prevent contact of mucous by the inner layer, and in combination with said inner layer provides said catheter body with enough softness and flexibility to bend rather than kink when placed within a patient'"'"'s trachea for an extended period of time, and with enough rigidity to hold said catheter body firmly against a posterior wall of the trachea to minimize unwanted movement of the catheter body; and
means for connecting said catheter body to an oxygen source.
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Abstract
A multi-layered transtracheal catheter. The transtracheal catheter has a multi-layer or double wall construction formed of two materials. One material is resistant to kinking. The other material is resistant to mucous buildup. Together, they form a catheter that can remain within the trachea for an extended period of time without needing to be removed for cleaning.
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Citations
36 Claims
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1. A transtracheal catheter comprising:
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an elongated catheter body comprising; an inner layer and means to resist kinking of said inner layer and including constructing said inner layer of a material that is soft and flexible to the extent that it will bend rather than kink when placed within a patient'"'"'s trachea for extended periods of time; and an outer layer fused to the inner layer and comprising a material that is sufficiently hydrophobic and that has a sufficiently low coefficient of friction such that said outer layer is resistant to mucous buildup when placed in the trachea, said outer layer essentially completely covering said inner layer to prevent contact of mucous by the inner layer, and in combination with said inner layer provides said catheter body with enough softness and flexibility to bend rather than kink when placed within a patient'"'"'s trachea for an extended period of time, and with enough rigidity to hold said catheter body firmly against a posterior wall of the trachea to minimize unwanted movement of the catheter body; and means for connecting said catheter body to an oxygen source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A transtracheal catheter comprising:
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an elongated catheter body defining an inner lumen therethrough and comprising; an inner wall and means to resist kinking of said inner wall and including constructing said inner wall of a material that is soft and flexible to the extent that it will bend rather than kink when placed within a patient'"'"'s trachea for extended periods of time, and said inner wall having a first cross-sectional thickness; and an outer wall fused to the inner wall and comprising a material that is more rigid and less flexible than the material of said inner wall, said outer wall having a cross-sectional thickness which is less than the cross-sectional thickness of said inner wall but which, in combination therewith, provides said catheter body with enough softness and flexibility to bend rather than kink when placed within a patient'"'"'s trachea for an extended period of time, and with enough rigidity to hold said catheter body firmly against a posterior wall of the trachea to minimize unwanted movement of the catheter body; and means for connecting said catheter body to an oxygen source. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A transtracheal catheter comprising:
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an elongated catheter body defining an inner lumen therethrough and comprising; an inner wall and means to resist kinking of said inner wall and including constructing said inner wall of a material that is soft and flexible to the extent that it will bend rather than kink when placed within a patient'"'"'s trachea for extended periods of time, and said inner wall having a first cross-sectional thickness; and an outer wall fused to the inner wall and comprising a material that is more rigid and less flexible than the material of said inner wall, said outer wall having a cross-sectional thickness which is less than the cross-sectional thickness of said inner wall but which, in combination therewith, provides said catheter body with enough softness and flexibility to bend rather than kink when placed within a patient'"'"'s trachea for an extended period of time, and with enough rigidity to firmly hold said catheter body against a posterior wall of the trachea to minimize unwanted movement of the catheter body, and wherein said outer wall is also sufficiently hydrophobic and has a low enough coefficient of friction so that said outer wall is resistant to mucous buildup, and wherein said inner wall terminates at a point within said inner lumen and said outer wall wraps around said inner wall at said point so as to essentially completely cover said inner wall to prevent contact of mucous by the inner wall; and means for connecting said catheter body to an oxygen source. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification