An HME has exchange elements (4) at opposite ends of a tubular housing (1, 101) and a central port (2) for connection to a tracheal tube (3). An oxygen port (5, 105, 105′) is located centrally with the major part of it being contained within a recess (40, 140, 140′) on the exterior of the housing an
An HME has exchange elements (4) at opposite ends of a tubular housing (1, 101) and a central port (2) for connection to a tracheal tube (3). An oxygen port (5, 105, 105′) is located centrally with the major part of it being contained within a recess (40, 140, 140′) on the exterior of the housing and extending at right angles to the length of the housing. The oxygen port (5, 105, 105′) opens into a wider passage (32, 32′) extending within the housing, which opens on the external face (30) of the two exchange elements (4). A large suction aperture (60) aligns with the port (2) opening to the tracheal tube (3) and is covered by a hinged flap (61) when not in use.
대표청구항▼
1. A HME (Heat and Moisture Exchanger) comprising: a housing having a length extending along an axis, a first port projects from the housing adapted for connection to a patient breathing device, a HME element extends transversely of the axis at opposite ends of the housing through which gas can flow
1. A HME (Heat and Moisture Exchanger) comprising: a housing having a length extending along an axis, a first port projects from the housing adapted for connection to a patient breathing device, a HME element extends transversely of the axis at opposite ends of the housing through which gas can flow to and from a patient, a recess provided at a lower side and midway along the length of the housing, an oxygen supply port by which oxygen can be supplied to the patient via the HME, the oxygen supply port having a stem with an inner end attached to a wall of the recess and a free open end adapted to physically attach to an oxygen line, the oxygen supply port having at least a major part of the stem contained within the recess when not in use, an oxygen passage extending along the housing to connect with the stem, a suction aperture located substantially opposite the first port, and a flap having one end hingedly attached to the housing being movable to cover the suction aperture and an opposite, free end that extends over a part of the recess to cover the major part and to cover and face the free open end of the stem. 2. The HME of claim 1, wherein the oxygen supply port extends parallel to the first port in an opposite direction. 3. The HME according to claim 1, wherein the flap is movable to uncover the suction port so that a suction catheter can be extended through the suction aperture into the patient breathing device. 4. The HME according to claim 1, wherein when covering the suction aperture, the flap is arranged to provide a substantially gas-tight seal fit for the suction aperture, the fit to the suction aperture being arranged such that the flap is blown away from the suction aperture due to an increased pressure in the housing. 5. The HME according to claim 1, wherein the HME element is an HME exchange element. 6. The HME according to claim 1, wherein the oxygen passage extends along the housing to open onto an external face of the HME element, the oxygen supply port being directed at an angle to the oxygen supply passage such that oxygen flow changes direction where it emerges from the port into the passage, and wherein a cross-sectional area of the oxygen passage is greater than a cross-sectional area of the oxygen port so that oxygen pressure drops where it emerges from the port into the passage. 7. The HME according to claim 1, wherein the oxygen supply port is located at right angles to the axis of the housing and is entirely contained within the recess. 8. A HME (Heat and Moisture Exchanger) having a housing having a longitudinal axis, a first port extending from the housing at right angles to the longitudinal axis and substantially midway along a length of the housing, the first port being adapted for connection to a patient breathing device, a HME element at opposite ends of the housing through which gas can flow to and from the patient, a second oxygen supply port in the form of a tubular stem extending substantially parallel to the first port and at right angles to the longitudinal axis of the housing, the second port being arranged to supply oxygen to the patient via the HME, wherein the housing has a recess provided at a lower side and midway along the length of the housing, wherein a major part of the oxygen supply port extends within the recess, the tubular stem of the oxygen supply port having an inner end attached to a wall of the recess and a free open end adapted to physically attach to an oxygen line; wherein the housing includes a suction aperture located substantially opposite the first port, wherein the device includes a flap that is hinged at one end on the housing and covers the suction aperture, and wherein the flap has an opposite, free end extending over a part of the recess and covering and facing the open free end of the tubular stem, the flap being displaceable about its hinged end to reveal the suction aperture and enable a suction catheter to be extended through the suction aperture into the patient breathing device.
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이 특허에 인용된 특허 (9)
Burrell E. Clawson ; James Weigl, Apparatus for providing heat/moisture to respiratory gases.
Lang Volker (Zugspitzstrasse 52 8035 Gauting DEX), Device for warming and humidifying gases and more particularly respiratory gases during artificial respiration.
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