Zone heating for respiratory circuits
First Claim
1. A medical tube comprising:
- a first segment and a second segment, each segment comprising;
an elongate hollow body spirally wound to form an elongate tube having a longitudinal axis, a lumen extending along the longitudinal axis, and a hollow wall surrounding the lumen, wherein the elongate hollow body has in a transverse cross-section a wall defining at least a portion of the lumen of the elongate tube;
a reinforcement portion extending along a length of the elongate hollow body being spirally wound between adjacent turns of the elongate hollow body, wherein the reinforcement portion defines at least a portion of the lumen of the elongate tube and is more rigid than the wall of the elongate hollow body; and
one or more conductive filaments embedded or encapsulated within the reinforcement portion; and
a segment connector adapted to connect the first segment to the second segment, the segment connector comprising;
connection pads configured to couple the one or more conductive filaments from the first segment to the one or more conductive filaments from the second segment; and
a power diode coupled to the connection pads,wherein the power diode prevents power of a first polarity that is delivered to the one or more conductive filaments of the first segment from being delivered to the one or more conductive filaments of the second segment, andwherein the power diode allows power of a second polarity that is delivered to the one or more conductive filaments of the first segment to be delivered to the one or more conductive filaments of the second segment,wherein a heater circuit comprising the one or more conductive filaments of the first and second segments is independent of another heater circuit that heats another tube.
2 Assignments
0 Petitions
Accused Products
Abstract
Some embodiments provide for an inspiratory limb for a breathing circuit that includes a first segment that comprises a first heater wire circuit and a second segment that comprises a second heater wire circuit. The inspiratory limb can include an intermediate connector that includes a connection circuit that electrically couples the first heater wire circuit to the second heater wire circuit. The inspiratory limb can be configured to operate in two modes wherein, in a first mode, electrical power passes through the first electrical connection to provide power to the first heater wire circuit without providing power to the second heater wire circuit, and in a second mode, electrical power pass through the first electrical connection to provide power to both the first heater wire circuit and the second heater wire circuit.
268 Citations
23 Claims
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1. A medical tube comprising:
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a first segment and a second segment, each segment comprising; an elongate hollow body spirally wound to form an elongate tube having a longitudinal axis, a lumen extending along the longitudinal axis, and a hollow wall surrounding the lumen, wherein the elongate hollow body has in a transverse cross-section a wall defining at least a portion of the lumen of the elongate tube; a reinforcement portion extending along a length of the elongate hollow body being spirally wound between adjacent turns of the elongate hollow body, wherein the reinforcement portion defines at least a portion of the lumen of the elongate tube and is more rigid than the wall of the elongate hollow body; and one or more conductive filaments embedded or encapsulated within the reinforcement portion; and a segment connector adapted to connect the first segment to the second segment, the segment connector comprising; connection pads configured to couple the one or more conductive filaments from the first segment to the one or more conductive filaments from the second segment; and a power diode coupled to the connection pads, wherein the power diode prevents power of a first polarity that is delivered to the one or more conductive filaments of the first segment from being delivered to the one or more conductive filaments of the second segment, and wherein the power diode allows power of a second polarity that is delivered to the one or more conductive filaments of the first segment to be delivered to the one or more conductive filaments of the second segment, wherein a heater circuit comprising the one or more conductive filaments of the first and second segments is independent of another heater circuit that heats another tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A medical tube comprising:
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a first segment comprising one or more heater wires; a second segment comprising one or more heater wires; a connection circuit adapted to connect the first and second segments, the connection circuit comprising a diode; and a controller, wherein each of the first and second segments further comprises a spirally wound elongate hollow body and a spirally wound elongate bead member, the spirally wound elongate hollow body forming at least in part an elongate tube comprising a longitudinal axis and a lumen extending along the longitudinal axis, the elongate bead member forming at least a portion of the lumen and providing support for the elongate hollow body, and wherein the controller is adapted to selectively switch between a first mode in which the controller provides power to the first segment, and a second mode in which the controller provides power to the first and second segments, wherein a heater circuit comprising the one or more heater wires of the first and second segments is independent of another heater circuit that heats another tube. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification