Hyperthermic humidification system
First Claim
1. An apparatus for delivering humidified breathing gas to a patient, the apparatus comprising:
- a vapor transfer unit having a liquid passage, a breathing gas passage, a vapor transfer device positioned to transfer vapor to the breathing gas passage from the liquid passage, and a first pump portion within the vapor transfer unit operable to advance liquid through the liquid passage; and
a base unit that releasably engages the vapor transfer unit to enable reuse of the base unit and selective disposal of the vapor transfer unit, the liquid passage not coupled to the base unit for liquid flow between the base unit and the vapor transfer unit when the vapor transfer unit is received by the base unit;
wherein the base unit comprises a second pump portion which drives the first pump portion to advance liquid through the liquid passage of the vapor transfer unit when the base unit engages the vapor transfer unit.
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Accused Products
Abstract
Apparatus and methods for delivering humidified breathing gas to a patient are provided. The apparatus includes a humidification system configured to deliver humidified breathing gas to a patient. The humidification system includes a vapor transfer unit and a base unit. The vapor transfer unit includes a liquid passage, a breathing gas passage, and a vapor transfer device positioned to transfer vapor to the breathing gas passage from the liquid passage. The base unit includes a base unit that releasably engages the vapor transfer unit to enable reuse of the base unit and selective disposal of the vapor transfer unit. The liquid passage is not coupled to the base unit for liquid flow therebetween when the vapor transfer unit is received by the base unit.
156 Citations
22 Claims
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1. An apparatus for delivering humidified breathing gas to a patient, the apparatus comprising:
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a vapor transfer unit having a liquid passage, a breathing gas passage, a vapor transfer device positioned to transfer vapor to the breathing gas passage from the liquid passage, and a first pump portion within the vapor transfer unit operable to advance liquid through the liquid passage; and a base unit that releasably engages the vapor transfer unit to enable reuse of the base unit and selective disposal of the vapor transfer unit, the liquid passage not coupled to the base unit for liquid flow between the base unit and the vapor transfer unit when the vapor transfer unit is received by the base unit; wherein the base unit comprises a second pump portion which drives the first pump portion to advance liquid through the liquid passage of the vapor transfer unit when the base unit engages the vapor transfer unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for delivering humidified breathing gas to a patient, the apparatus comprising:
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a vapor transfer unit having a liquid passage, a breathing gas passage, a vapor transfer device positioned to transfer vapor to the breathing gas passage from the liquid passage, and a pump portion within the vapor transfer unit operable to advance liquid through the liquid passage; and a base unit that releasably engages the vapor transfer unit to enable reuse of the base unit and selective disposal of the vapor transfer unit, the liquid passage not coupled to the base unit for liquid flow between the base unit and the vapor transfer unit when the vapor transfer unit is received by the base unit; wherein the base unit comprises at least one bubble sensor positioned to sense a parameter in the liquid passage of the vapor transfer unit and the vapor transfer unit comprises at least one reflector for the at least one bubble sensor positioned to align with the at least one bubble sensor in the base unit.
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22. An apparatus for delivering humidified breathing gas to a patient, the apparatus comprising:
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a vapor transfer unit having a liquid passage, a breathing gas passage, a vapor transfer device positioned to transfer vapor to the breathing gas passage from the liquid passage, and a pump portion within the vapor transfer unit operable to advance liquid through the liquid passage; and a base unit that releasably engages the vapor transfer unit to enable reuse of the base unit and selective disposal of the vapor transfer unit, the liquid passage not coupled to the base unit for liquid flow between the base unit and the vapor transfer unit when the vapor transfer unit is received by the base unit; wherein the base unit comprises at least one temperature sensor and the vapor transfer unit comprises a temperature sensor reflector positioned to align with the at least one temperature sensor in the base unit.
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Specification