Abstract: An expiratory limb is provided that is configured to remove humidified gases from a patient and configured to provide improved drying performance by providing a tailored temperature profile along the limb. Limbs for providing humidified gases to and/or removing humidified gases from a patient are also provided, the limbs having improved gas residence time at constant volumetric flow rate. The improved residence time can be achieved by providing a limb comprising multiple lumens.

Abstract: A lateral flow test kit includes a cassette and a swab. The cassette comprises a vial of liquid closed by seal; a test strip; a passage leading from the exterior of the cassette to the vial; and a conduit communicating between the vial and the test strip. The swab can be inserted along the passage to cause a tip of the swab to enter the vial and release liquid from the vial. The liquid flows past a head of the swab to extract a sample and deliver it through the conduit 34 to the test strip. The passage may comprise an obstruction, which requires the user to push the swab past it with a force sufficient to penetrate the seal. The obstruction may also prevent removal of the used swab from the cassette. A distal end of the passage may be curved to deflect the tip of the swab towards the seal at a more favourable angle.

Abstract: An expiratory limb is provided that is configured to remove humidified gases from a patient and configured to provide improved drying performance by providing a tailored temperature profile along the limb. Limbs for providing humidified gases to and/or removing humidified gases from a patient are also provided, the limbs having improved gas residence time at constant volumetric flow rate. The improved residence time can be achieved by providing a limb comprising multiple lumens.

Abstract: A drying expiratory limb of a breathing circuit is provided that is configured to increase or optimize drying of a gas to reduce or prevent condensation. The drying expiratory limb can include a wall that is at least partly made of a breathable material configured to allow transmission of water vapor but substantially prevent transmission of liquid water. The wall includes first and second openings in the wall, the openings respectively configured to receive a gas at a first temperature and a first relative humidity and to allow the gas to exit having a second temperature and a second relative humidity. The drying expiratory limb can be configured to tailor the temperature drop of the gas along the wall to maintain a relative humidity within a targeted range and/or to maintain the gas temperature above its dew point temperature.

Abstract: A drying expiratory limb of a breathing circuit is provided that is configured to increase or optimize drying of a gas to reduce or prevent condensation. The drying expiratory limb can include a wall that is at least partly made of a breathable material configured to allow transmission of water vapor but substantially prevent transmission of liquid water. The wall includes first and second openings in the wall, the openings respectively configured to receive a gas at a first temperature and a first relative humidity and to allow the gas to exit having a second temperature and a second relative humidity. The drying expiratory limb can be configured to tailor the temperature drop of the gas along the wall to maintain a relative humidity within a targeted range and/or to maintain the gas temperature above its dew point temperature.

Abstract: A patient interface includes a first body that rests on a first portion of a patient's face, a second body that rests on a second portion of the patient's face, and a bridge linking the first and second bodies. The patient interface includes an attachment structure that couples with a complementary fixation structure positioned on the patient's face to secure the patient interface to the patient's face. The complementary fixation structure can be configured to assist in retaining a feeding tube in position relative to the patient's face or to the patient interface.

Abstract: This invention relates to a patient interface, such as a nasal cannula, comprising a body to be positioned upon a user (preferably such as a user's face), the body including at least one (and preferably a pair of) nasal prong(s), the or each nasal prong including a lumen capable of being fluidly connected thereto for fluid communication with a supply of breathable gas, the or each nasal prong to be in a configuration either inserted into, or to direct a flow of gas toward, a nare or the nares of the user's nose, wherein the body includes at least one element responsive to force(s) or movement(s), or both, experienced by at least a first region of the patient interface.

Abstract: A patient interface, such as a nasal cannula is described. The patient interface has a body portion to be located, in-use upon a face of a user. The body portion has at least one side arm that extends laterally from a central bridge portion to be located about a user's septum region, where each side arm is connected to a resilient, or relatively more rigid, bridge portion element. The interface has at least one, and preferably a pair of, nasal prong(s). The body portion has at least one fluid passageway connected to the nasal prong(s) for supply of a gas to the nare(s) of the user's nose. A cross section of the passageway varies along the length of the body portion to regions of varying flexibility along the body portion. The bridge portion element defines a substantially predetermined spatial relationship for outlet(s) of a gas delivery system supplying gas via each side arm to the outlet(s) from which, for example, the nasal prong(s) may be provided in fluid connection.

Abstract: A patient interface includes a first body that rests on a first portion of a patient's face, a second body that rests on a second portion of the patient's face, and a bridge linking the first and second bodies. The patient interface includes an attachment structure that couples with a complementary fixation structure positioned on the patient's face to secure the patient interface to the patient's face. The complementary fixation structure can be configured to assist in retaining a feeding tube in position relative to the patient's face or to the patient interface.

Abstract: This invention relates to a patient interface, such as a nasal cannula, including a body to be positioned upon a user (preferably such as a user's face), the body including at least one (and preferably a pair of) nasal prong(s), the or each nasal prong including a lumen capable of being fluidly connected thereto for fluid communication with a supply of breathable gas, the or each nasal prong to be in a configuration either inserted into, or to direct a flow of gas toward, a nare or the nares of the user's nose, wherein the body includes at least one element responsive to force(s) or movement(s), or both, experienced by at least a first region of the patient interface.

Abstract: A patient interface, such as a nasal cannula is described. The patient interface has a body portion to be located, in-use upon a face of a user. The body portion has at least one side arm that extends laterally from a central bridge portion to be located about a user's septum region, where each side arm is connected to a resilient, or relatively more rigid, bridge portion element. The interface has at least one, and preferably a pair of, nasal prong(s). The body portion has at least one fluid passageway connected to the nasal prong(s) for supply of a gas to the nare(s) of the user's nose. A cross section of the passageway varies along the length of the body portion to regions of varying flexibility along the body portion. The bridge portion element defines a substantially predetermined spatial relationship for outlet(s) of a gas delivery system supplying gas via each side arm to the outlet(s) from which, for example, the nasal prong(s) may be provided in fluid connection.

Abstract: An expiratory limb is provided that is configured to remove humidified gases from a patient and configured to provide improved drying performance by providing a tailored temperature profile along the limb. Limbs for providing humidified gases to and/or removing humidified gases from a patient are also provided, the limbs having improved gas residence time at constant volumetric flow rate. The improved residence time can be achieved by providing a limb comprising multiple lumens.

Abstract: An expiratory limb is provided that is configured to remove humidified gases from a patient and configured to provide improved drying performance by providing a tailored temperature profile along the limb. Limbs for providing humidified gases to and/or removing humidified gases from a patient are also provided, the limbs having improved gas residence time at constant volumetric flow rate. The improved residence time can be achieved by providing a limb comprising multiple lumens.

Abstract: A drying expiratory limb of a breathing circuit is provided that is configured to increase or optimize drying of a gas to reduce or prevent condensation. The drying expiratory limb can include a wall that is at least partly made of a breathable material configured to allow transmission of water vapor but substantially prevent transmission of liquid water. The wall includes first and second openings in the wall, the openings respectively configured to receive a gas at a first temperature and a first relative humidity and to allow the gas to exit having a second temperature and a second relative humidity. The drying expiratory limb can be configured to tailor the temperature drop of the gas along the wall to maintain a relative humidity within a targeted range and/or to maintain the gas temperature above its dew point temperature.

Abstract: A drying expiratory limb of a breathing circuit is provided that is configured to increase or optimize drying of a gas to reduce or prevent condensation. The drying expiratory limb can include a wall that is at least partly made of a breathable material configured to allow transmission of water vapor but substantially prevent transmission of liquid water. The wall includes first and second openings in the wall, the openings respectively configured to receive a gas at a first temperature and a first relative humidity and to allow the gas to exit having a second temperature and a second relative humidity. The drying expiratory limb can be configured to tailor the temperature drop of the gas along the wall to maintain a relative humidity within a targeted range and/or to maintain the gas temperature above its dew point temperature.

Abstract: A patient interface includes a first body that rests on a first portion of a patient's face, a second body that rests on a second portion of the patient's face, and a bridge linking the first and second bodies. The patient interface includes an attachment structure that couples with a complementary fixation structure positioned on the patient's face to secure the patient interface to the patient's face. The complementary fixation structure can be configured to assist in retaining a feeding tube in position relative to the patient's face or to the patient interface.