Respiratory Gas Tubing Connector

Abstract

A port connector for a respiratory gas tube is disclosed. The port connector has a port extending therefrom that provides a passageway into the lumen of the port connector. The port has a connection mechanism and a port sealing surface. The port connector may further include a connector elbow having an accessory end configured to connect to an accessory, a connector elbow sealing surface, and a collar located at the port end of the connector elbow. The collar may be configured to engage the connection mechanism of the port connector to force the connector elbow sealing surface into engagement with the port sealing surface.

Description

[Technical Field]

[0001] The present invention relates to medical connectors, and in particular to respiratory gas tubing assemblies and connectors for use in breathing circuits suitable for delivering humidified gas to or from a patient, such as in a respiratory humidification system. [Background technology]

[0002] In a breathing circuit, various components transport warm and / or humidified gases to and from a patient. Respiratory humidification helps reduce the risk of infection and / or tissue damage.

[0003] Humidifiers are used to humidify gases. Respiratory gas tubing is used to transport humidified gases to and from the patient and to connect any equipment together as part of a breathing circuit.

[0004] The breathing circuit may provide a complete circuit of breathing gas to and from the patient. In some cases, no tubing is provided to remove gas from the patient, and the gas may be exhaled directly to the atmosphere. In other cases, a breathing circuit sufficient to deliver gases to the patient as well as remove them is provided. Summary of the Invention [Means for solving the problem]

[0005] A respiratory gas assembly and / or connector and / or connector assembly for use with a ventilator and breathing circuit is disclosed.

[0006] In a first aspect, a connector assembly may be provided, the connector assembly comprising: 1. A port connector, the port connector including a port extending therefrom, the port providing a passageway into a lumen of the port connector, the port comprising: a connecting mechanism, and Port sealing surface a port connector including: Connector elbow comprising: an accessory end configured to connect to an accessory; a port end configured to connect to the port; Connector elbow sealing surface, and Collar located at the port end of the connector elbow Including connector elbow and Including, The collar is configured to engage a connecting feature of the port connector to force the connector elbow sealing surface into engagement with the port sealing surface.

[0007] In some embodiments, the fitting is integrally formed with the connector elbow, or the fitting is separable and connectable to the fitting end.

[0008] In some embodiments, the connector elbow is an accessory tube connector elbow, the accessory is an accessory tube, and the accessory end is an accessory tube end configured to connect with the accessory tube, and optionally, the accessory tube connector elbow includes a lumen extending from the port end to the accessory end.

[0009] In some embodiments, the accessory tube comprises: Pressure lines, Sampling tube One or more of the following:

[0010] In some embodiments, the connector elbow includes a barbed connection at the accessory end configured to connect with an accessory tube.

[0011] In some embodiments, the connector elbow includes a friction fit at the accessory end configured to connect with an accessory tube.

[0012] In some embodiments, the connector elbow is a sensor connector elbow, the accessory is a sensor lead, and the accessory end is a sensor lead end configured to connect to the sensor lead, and the sensor connector elbow includes a sensor.

[0013] In some embodiments, the central axis of the fitting end of the connector elbow is rotatable relative to the port connector to align with the central axis of the lumen of the port connector.

[0014] In some embodiments, the port connector includes one or more protrusions located within the lumen of the port connector.

[0015] In some embodiments, the one or more protrusions extend in a direction along the lumen of the port connector.

[0016] In some embodiments, the one or more protrusions are equidistantly spaced around the lumen of the port connector.

[0017] In some embodiments, the one or more protrusions include three protrusions spaced equidistantly around the lumen of the port connector.

[0018] In some embodiments, the connection mechanism is located around at least a portion of the perimeter of the port.

[0019] In some embodiments, the port connector is or includes a Y-piece.

[0020] In some embodiments, the port connector is a pressure port connector and / or a sampling tube connector, and optionally the port connector is an accessory port connector.

[0021] In some embodiments, the port's attachment mechanism is: screw thread Insertion part One or more of the following:

[0022] In some embodiments, the port is substantially cylindrical.

[0023] In some embodiments, the port sealing surface is located on an interior surface of the port.

[0024] In some embodiments, the connector elbow sealing surface is located on an outer surface of the connector elbow.

[0025] In some embodiments, the port sealing surface is located on an exterior surface of the port.

[0026] In some embodiments, the connector elbow sealing surface is located on an interior surface of the connector elbow.

[0027] In some embodiments, the port sealing surface is located on an end face of the port.

[0028] In some embodiments, the connector elbow sealing surface is located on the end face of the connector elbow.

[0029] In some embodiments, the port includes a distal portion located at the connector elbow connection end, the distal portion including a distal portion tapered surface.

[0030] In some embodiments, the distal portion tapered surface tapers toward the proximal end of the port.

[0031] In some embodiments, the distal portion provides alignment of the connector elbow and the port when the connector elbow is engaged with the port.

[0032] In some embodiments, the port includes a sealing portion, and the sealing portion includes a sealing portion tapered surface.

[0033] In some embodiments, the sealing portion tapered surface tapers toward the proximal end of the port.

[0034] In some embodiments, the sealing portion comprises a port sealing surface.

[0035] In some embodiments, the port includes a proximal portion, the proximal portion being located at a proximal end of the port.

[0036] In some embodiments, the port includes an intermediate portion located between the distal portion and the sealing portion.

[0037] In some embodiments, the intermediate portion is configured to maintain alignment of the connector elbow and the port when the connector elbow and the port are engaged.

[0038] In some embodiments, the port end of the connector elbow includes a connector elbow tapered surface.

[0039] In some embodiments, the connector elbow tapered surface comprises a connector elbow sealing surface.

[0040] In some embodiments, the port extends away from the lumen of the port connector.

[0041] In some embodiments, the port extends in a direction substantially perpendicular to the central axis of the lumen of the port connector.

[0042] In some embodiments, the angle between the accessory end and the port end of the connector elbow is between about 10 degrees and about 120 degrees, or between about 45 and about 115 degrees, or between about 80 and about 100 degrees, or about 90 degrees.

[0043] In some embodiments, the collar includes a corresponding connecting mechanism on an inner surface of the collar for engaging with a connecting mechanism of the port connector.

[0044] In some embodiments, the collar is rotatable relative to the connector elbow.

[0045] In some embodiments, the connector elbow includes at least one protrusion extending outward from an outer surface of the connector elbow, the at least one protrusion configured to retain the collar on the connector elbow.

[0046] In some embodiments, the protrusion extends circumferentially around at least a portion of the connector elbow.

[0047] In some embodiments, the protrusion is located near the port end of the connector elbow.

[0048] In some embodiments, the collar includes a protrusion configured to engage a protrusion on the connector elbow.

[0049] In another aspect, a connector assembly may be provided, comprising: a port providing access into the lumen of the port connector; Connector elbow comprising: an accessory end configured to connect to an accessory; and a port end configured to connect to the port Including connector elbow and Including, In a first configuration, the connector elbow is engaged with the port connector but is rotatable relative to the port connector to align a central axis of the accessory end with a central axis of the lumen of the port connector, and: a) in a second configuration, after alignment of the central axis of the accessory end of the connector elbow with the central axis of the lumen of the port connector, the connector elbow is prevented from rotating relative to the port connector to maintain alignment of the accessory with the lumen of the port connector; or b) In the second configuration, after the central axis of the accessory end of the connector elbow is aligned with the central axis of the lumen of the port connector, there is increased resistance to relative rotation between the elbow connector and the port connector, maintaining alignment between the accessory and the lumen of the port connector.

[0050] In some embodiments, the connector elbow is an accessory tube connector elbow, the accessory is an accessory tube, and the accessory end is an accessory tube end configured to connect with the accessory tube.

[0051] In some embodiments, the connector elbow is an accessory tubing connector elbow that includes a lumen extending from the port end to the accessory connector end.

[0052] In some embodiments, the accessory tube comprises: Pressure line Sampling tube One or more of the following:

[0053] In some embodiments, the connector elbow is a sensor connector elbow, the accessory is a sensor lead, and the accessory end is a sensor lead end configured to connect to the sensor lead, and the sensor connector elbow includes a sensor.

[0054] In some embodiments, the connector elbow includes a first connection mechanism and the port connector includes a second connection mechanism.

[0055] In some embodiments, the first connection mechanism and / or the second connection mechanism are threaded connections.

[0056] In some embodiments, the first and second connection mechanisms force the connector elbow of the connector elbow sealing surface to engage with the port sealing surface.

[0057] In some embodiments, engagement of the first connection mechanism with the second connection mechanism provides a first configuration in a first connector configuration.

[0058] In some embodiments, engagement of the first and second connection mechanisms provides a second configuration in the second connector configuration.

[0059] In another aspect, a respiratory gas tube assembly may be provided, the respiratory gas tube assembly comprising: a respiratory gas tube configured to deliver a respiratory gas, the respiratory gas tube including a lumen extending from a first end of the respiratory gas tube to a second end of the respiratory gas tube; and The connector assembly according to any one of the above aspects. Includes:

[0060] In some embodiments, the port connector is integrally formed with the breathing gas tubing.

[0061] In some embodiments, the port connector is provided as a separate connector component that is connectable to a breathing gas tubing.

[0062] In some embodiments, the breathing gas tube is or forms part of the expiratory limb.

[0063] In some embodiments, the breathing gas tube is or forms part of the inspiratory limb.

[0064] In some embodiments, the port extends in a direction substantially perpendicular to the breathing gas tube.

[0065] In another aspect, a respiratory gas tube assembly may be provided, the respiratory gas tube assembly comprising: a respiratory gas tube configured to deliver a respiratory gas, the respiratory gas tube including a lumen extending from a first end of the respiratory gas tube to a second end of the respiratory gas tube; an accessory tube including a lumen; A port connector located at a first end of a respiratory gas tube, the port connector including a port extending therefrom, the port providing a passageway into a lumen of the port connector, the port including: a connecting mechanism, and Port sealing surface a port connector including: 1. An accessory tube connector elbow, the connector elbow comprising: an accessory tube end configured to connect to the accessory tube; and a port end configured to connect to the port; a lumen extending from the port end to the accessory tube end; Attached tube connector elbow sealing surface Includes an attached tube connector elbow, The collar located at the port end of the included tube connector elbow Including, The collar is configured to engage a connecting feature of the port connector to force the accessory tube connector elbow sealing surface into engagement with the port sealing surface.

[0066] In some embodiments, the accessory tube comprises: Pressure line Sampling tube One or more of the following:

[0067] In some embodiments, the port connector is integrally formed with the breathing gas tubing.

[0068] In some embodiments, the port connector is provided as a separate connector component that is connectable to a breathing gas tubing.

[0069] In some embodiments, the port connector includes one or more protrusions located within the lumen of the port connector.

[0070] In some embodiments, the one or more protrusions extend in a direction along the lumen of the port connector.

[0071] In some embodiments, the one or more protrusions are equidistantly spaced around the lumen of the port connector.

[0072] In some embodiments, the one or more protrusions include three protrusions spaced equidistantly around the lumen of the port connector.

[0073] In some embodiments, the connection mechanism is located around at least a portion of the perimeter of the port.

[0074] In some embodiments, the port connector is or includes a Y-piece.

[0075] In some embodiments, the breathing gas tube is or forms part of the expiratory limb.

[0076] In some embodiments, the breathing gas tube forms part of the inspiratory limb.

[0077] In some embodiments, the port connector is a pressure port connector and / or a sampling tube connector, and optionally, the port connector is an accessory port connector.

[0078] In some embodiments, the port's attachment mechanism is: screw thread Insertion part One or more of the following:

[0079] In some embodiments, the port is substantially cylindrical.

[0080] In some embodiments, the port sealing surface is located on an interior surface of the port.

[0081] In some embodiments, the port includes a distal portion located at the elbow connection end of the accessory tubing connector, the distal portion including a distal portion tapered surface.

[0082] In some embodiments, the distal portion tapered surface tapers toward the proximal end of the port.

[0083] In some embodiments, the distal portion provides alignment between the accessory tube connector elbow and the port when the accessory tube connector elbow is engaged with the port.

[0084] In some embodiments, the port includes a sealing portion, and the sealing portion includes a sealing portion tapered surface.

[0085] In some embodiments, the sealing portion tapered surface tapers toward the proximal end of the port.

[0086] In some embodiments, the sealing portion comprises a port sealing surface.

[0087] In some embodiments, the port includes a proximal portion, the proximal portion being located at a proximal end of the port.

[0088] In some embodiments, the port includes an intermediate portion located between the distal portion and the sealing portion.

[0089] In some embodiments, the intermediate portion is configured to maintain alignment of the accessory tube connector elbow and the port when the accessory tube connector elbow and the port are engaged.

[0090] In some embodiments, the port sealing surface is located on an exterior surface of the port.

[0091] In some embodiments, the port extends away from the lumen of the breathing gas tube.

[0092] In some embodiments, the port extends in a direction substantially perpendicular to the breathing gas tube.

[0093] In some embodiments, the angle between the accessory tube end and the port end of the accessory tube connector elbow is about 10 degrees to about 120 degrees, or about 45 to about 115 degrees, or about 80 to about 100 degrees, or about 90 degrees.

[0094] In some embodiments, the accessory tube connector elbow includes a barbed connection at the accessory tube end configured to connect with the accessory tube.

[0095] In some embodiments, the accessory tube connector elbow includes a friction fit at the accessory tube end configured to connect with the accessory tube.

[0096] In some embodiments, the accessory tube connector elbow sealing surface is located on the exterior surface.

[0097] In some embodiments, the port end of the accessory tube connector elbow comprises an accessory tube connector elbow tapered surface.

[0098] In some embodiments, the accessory tube connector elbow tapered surface comprises an accessory tube connector elbow sealing surface.

[0099] In some embodiments, the accessory tube connector elbow sealing surface is located on an interior surface of the accessory tube connector elbow.

[0100] In some embodiments, the collar includes a corresponding connection mechanism on an inner surface of the collar for engaging with a connection mechanism of the port connector.

[0101] In some embodiments, the collar is rotatable relative to the accessory tube connector elbow.

[0102] In some embodiments, the accessory tube connector elbow includes at least one protrusion extending outward from an outer surface of the accessory tube connector elbow, the at least one protrusion configured to retain a collar on the accessory tube connector elbow.

[0103] In some embodiments, the protrusion extends circumferentially around at least a portion of the accessory tube connector elbow.

[0104] In some embodiments, the protrusion is located at the port end of the accessory tubing connector elbow.

[0105] In some embodiments, the collar includes a protrusion configured to engage a protrusion on an accessory tube connector elbow.

[0106] In another aspect, a respiratory gas tube assembly may be provided, the respiratory gas tube assembly comprising: a respiratory gas tube configured to deliver a respiratory gas, the respiratory gas tube including a lumen extending from a first end of the respiratory gas tube to a second end of the respiratory gas tube; an accessory tube including a lumen; a port connector located at a first end of the respiratory gas tubing, the port connector including a port; Accessory tube connector elbow including: an accessory tube end configured to connect to the accessory tube; and a port end configured to connect to the port Includes included tube connector elbow and Including, In a first configuration, the accessory tube connector elbow is engaged with the port connector but is rotatable relative to the port connector to align the accessory tube with the respiratory gas tube, and: In a second configuration, after alignment of the accessory tube and the respiratory gas tube, the accessory tube connector elbow is prevented from rotating relative to the port connector to maintain alignment of the accessory tube and the respiratory gas tube; or In the second configuration, after alignment of the accessory tube and the respiratory gas tube, resistance to relative rotation between the accessory tube elbow connector and the respiratory gas tube is increased to maintain alignment of the accessory tube and the respiratory gas tube.

[0107] In some embodiments, the accessory tube comprises: Pressure line Sampling tube One or more of the following:

[0108] In some embodiments, the accessory tube connector elbow comprises a first connection mechanism and the port connector comprises a second connection mechanism.

[0109] In some embodiments, the first connection mechanism and / or the second connection mechanism are threaded connections.

[0110] In some embodiments, engagement of the first and second connection mechanisms forces the accessory tube connector elbow sealing surface connector elbow into engagement with the port sealing surface.

[0111] In some embodiments, engagement of the first connection mechanism with the second connection mechanism provides a first configuration in a first connector configuration.

[0112] In some embodiments, engagement of the first and second connection mechanisms provides a second configuration in the second connector configuration.

[0113] Reference to a range of numbers disclosed herein (e.g., 1 to 10) is intended to incorporate a reference to all rational numbers within that range (e.g., 1, 1.1, 2, 3, 3.9, 4, 5, 6, 6.5, 7, 8, 9, and 10), as well as to any range of rational numbers within that range (e.g., 2 to 8, 1.5 to 5.5, and 3.1 to 4.7).

[0114] The embodiments described herein may be referred to broadly as relating to the parts, elements and features, and any and all combinations of any two or more of said parts, elements and features, individually or collectively, referred to or shown in the specification of this application, and where specific integers known to be equivalents in the industry to which the invention pertains are set forth herein, such known equivalents are intended to be incorporated herein as if set forth individually.

[0115] References herein to external sources, including patents and other literature, are generally for the purpose of providing background for explaining features of the present invention. Unless otherwise expressly stated, the reference to such sources should not be construed as an admission in any jurisdiction that such sources are prior art or form part of the general knowledge in the art.

[0116] As used herein, the term "comprising" means "consisting at least in part of." When interpreting statements containing the term herein, all features preceding the term in each statement must be present, although other features may also be present. Related words such as "comprise" and "comprised" are to be interpreted in the same manner.

[0117] The invention will now be described, by way of example only, and with reference to the drawings in which: [Brief explanation of the drawings]

[0118] [Figure 1A-1B] Shows the respiratory system. [Figure 2A] 1 shows a connector assembly. [Figure 2B] 1 shows a breathing gas tubing assembly. [Figure 2C] 1 shows a connector assembly. [Figure 2D] FIG. 1 shows an exploded view of the breathing gas tubing assembly. [Figures 2E-2F] 1 shows a cross-sectional view of a breathing gas tubing assembly. [Figure 2G] 1 shows a connector assembly. [Figure 2H] 1 shows a breathing gas tubing assembly. [Figure 2I] 1 shows a connector assembly. [Figure 2J] FIG. 1 shows an exploded view of the breathing gas tubing assembly. [Figure 2K-2L] 1 shows a cross-sectional view of a breathing gas tubing assembly. [Figures 3A-3D] 1 shows a connector assembly. [Figures 3E-3F] 1 shows a port connector including a Y-piece. [Figure 4A-4B] The included tubing elbow connector is shown. [Figure 4C-4D] The sensor elbow connector is shown. [Figures 5A-5C] Indicates color. [Figures 6A-6B] 1 shows a breathing gas tubing assembly. DETAILED DESCRIPTION OF THE INVENTION

[0119] Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

[0120] During use of the breathing system, various breathing tubes may be used to form gas flow paths for delivering gas to a user (e.g., as part of a breathing circuit). The properties of the gas may need to be determined at various points in the breathing tube to ensure that the appropriate therapy is administered to the user.

[0121] In some embodiments, the properties of the gas may be determined by one or more sensors, which may be, for example, in the breathing circuit or elsewhere in the system (e.g., respirator).

[0122] In some embodiments where a sensor is provided, a sensor lead may be required to connect the sensor to a component of the respiratory system (e.g., a ventilator or respirator or other gas source, or a humidifier). Introducing a connector lead or cable increases the number of components to be managed by the user or clinician. The additional connector lead or cable may protrude into the path of another component or may be wrapped around the respiratory gas tubing to which it is connected.

[0123] Accessory tubing may be used to provide gas and / or gas pathways from a particular point in the breathing circuit (e.g., a point in the breathing gas tubing). The accessory tubing may provide a gas pathway back to a component of the breathing system (e.g., a ventilator or respirator or other gas source, or a humidifier). The component of the breathing system may then measure a property of the gas (e.g., pressure, or gas concentration) via the accessory tubing.

[0124] It will be appreciated that in some embodiments no gas flow is provided within the accessory tube, and in some embodiments the accessory tube provides a flow of gas through the accessory tube.

[0125] Introducing accessory tubing into the system increases the number of components in the system that must be safely managed by the clinician. Managing accessory tubing can be difficult because it may protrude into the path of other components of the system or may become wrapped around the respiratory gas tubing to which it is connected.

[0126] A fixed connection (e.g., a barbed connection) may be provided between the accessory tube and the breathing gas tube, but this may make the connection difficult for the user to make given space constraints and, depending on the configuration of the system, may prevent the accessory tube from being movable.

[0127] Respiratory gas tubing may be used in breathing circuits or breathing systems for delivering and / or removing humidified gas to patients, such as those with obstructive sleep apnea, respiratory humidification (including neonatal patients), and in surgical humidification systems, such as gas injection systems and systems for patients undergoing procedures under general anesthesia.

[0128] This application relates to respiratory gas tubing assemblies and / or connectors and / or connector assemblies for use in breathing circuits or breathing systems. The respiratory gas tubing and connectors may be used to deliver and / or remove humidified gas to patients with obstructive sleep apnea, respiratory humidification (including neonatal patients), and in surgical humidification systems, such as gas insufflation systems and systems for patients undergoing procedures under general anesthesia.

[0129] The respiratory gas tubing assembly may be used to deliver gas between two components of a breathing circuit. The respiratory gas tubing assembly may be used to deliver gas between one component and a patient, for example, between a humidifier and a patient.

[0130] Respiratory gas tube 10 includes a lumen 11 that extends from a first end 12 of respiratory gas tube 10 to a second end 13 of respiratory gas tube 10 .

[0131] In one embodiment, the breathing gas tube 10 is an expiratory limb or part of an expiratory limb (e.g., expiratory tube 172). In another embodiment, the breathing gas tube 10 is an inhalation limb or part of an inhalation limb (e.g., expiratory tube 170).

[0132] In some embodiments, the respiratory gas tube is an inhalation tube, an exhalation tube, a patient interface tube, a supply tube, a dry line, a gas insufflation tube, or the like.

[0133] The respiratory gas tubing assembly may include one or more respiratory gas tubings and one or more connectors.

[0134] Tubing for use in respiratory equipment can be designed to minimize condensation (e.g., by including thermal insulation and / or heater wires). See, e.g., PCT Publication No. WO 2012164407, incorporated herein by reference.

[0135] The respiratory gas tubes, connectors and respiratory gas tube assemblies described herein may be included in one or more breathing systems, breathing circuits or kits.

[0136] Respiratory gas tubing may be used to deliver and / or remove humidified gas to patients with obstructive sleep apnea, respiratory humidification (including neonatal patients), and in surgical humidification systems, such as gas insufflation systems and systems for patients undergoing procedures under general anesthesia. Respiratory gas tubing may be used to deliver respiratory gas to and / or from a patient as part of respiratory therapy or treatment. The respiratory gas may be heated and / or humidified before delivery to the patient, for example, to reduce the risk of infection and / or tissue damage.

[0137] The breathing gas tube and accessory tubes may be flexible, which may allow the user to position and route the tubes according to the particular situation of use.

[0138] 1A schematically illustrates an embodiment of a breathing system 100A that may include one or more of the breathing gas tubes described herein. In the illustrated embodiment, the breathing system 100A includes a gas source 110, which is either integral with a humidification device 150 (e.g., a humidifier) ​​or is a separate component therefrom.

[0139] Gas source 110 may be, for example, a ventilator or respirator or other respiratory equipment configured to deliver gas.

[0140] The gas source 110 and / or humidifier 150 delivers heated and humidified gas to a patient 190 via a breathing circuit that includes, for example, an inspiratory tube 170 and a patient interface 180 .

[0141] As used herein, patient interface has a broad meaning and is given its ordinary and customary meaning to those skilled in the art, and also includes, but is not limited to, any one or more of a full face mask, a nasal mask, an oral mask, an oral-nasal mask, a nasal pillows mask, a nasal cannula, nasal prongs, a laryngeal mask, or any other suitable connection between a medical circuit and a patient's airway.

[0142] In some embodiments, a separate breathing gas tube, such as supply tube 130, may be used to transport gas from gas source 110 to humidification device 150. Supply tube 130 is sometimes referred to as the "dry" line because it is positioned before the "wet" humidifier in the breathing circuit.

[0143] In some embodiments, additional tubing, such as interface tubing 185, can connect inhalation tubing 170 and patient interface 180. It should be understood that other variations from the illustrated system 100A may exist. For example, inhalation tubing 170 may include multiple sections to accommodate other equipment, such as a water trap, an intermediate connector with one or more sensors, a PCB, and / or a controller.

[0144] FIG. 1B schematically illustrates another embodiment of a breathing system (or breathing circuit) 100B that may include one or more of the breathing gas tubes described herein. In many respects, the breathing system 100B may be similar to the breathing system 100A of FIG. 1. For example, as shown, the breathing system 100B includes a gas source 110 and a humidification device 150 (e.g., a humidifier). The gas source 110 and / or the humidification device 150 supply heated and humidified gas to a patient 190 via a breathing circuit that includes, for example, an inhalation tube 170 and a patient interface 180. However, in FIG. 1B, the breathing circuit further includes an exhalation tube 172 through which exhaled gases can be delivered. In some embodiments, the exhalation tube 172 delivers exhaled gases back to the gas source 110 and / or the humidification device 150.

[0145] 1B, connector 175 may include a y-piece 175 that connects both inhalation tube 170 and exhalation tube 172 to a component of the patient interface, such as interface tube 185 (as shown in FIG. 1A), or directly to patient interface 180 itself. Y-piece 175 is described in more detail below.

[0146] Additionally, the respiratory system 100B may include one or more sensors 135.

[0147] For example, the sensor 135 can be connected to the inhalation tube 170 near the patient interface 180, or the sensor 135 can be connected to the patient interface 180, among other possible sensor locations. The sensor 135 can be incorporated into or connectable to the inhalation tube 170. In the illustrated embodiment, the system 100B includes two sensors 135, a first sensor 135 positioned at or near the humidifier chamber outlet end of the inhalation tube 170, and a second sensor 135 positioned at the patient end of the inhalation tube 170.

[0148] The respiratory system 100B may include accessory tubing 20. The accessory tubing may provide a gas pathway between a portion of the breathing circuit and components of the respiratory system 100B.

[0149] For example, in FIG. 1B, accessory tube 20 is shown as providing a gas path between exhalation tube 172 and gas source 110.

[0150] The accessory tube 20 may be configured to be provided to any portion of the breathing circuit (eg, the expiratory tube 172, the inspiratory limb 170, the patient interface 180, and / or the Y-piece 175).

[0151] The accessory tube 20 may be configured to be provided to any component of the respiratory system 100B (eg, the gas source 110 or the humidifier 150).

[0152] In some embodiments, the accessory tube 20 may be a pressure line. For example, the accessory tube 20 may be configured to transmit any changes in pressure at the point where the accessory tube 20 connects to the breathing circuit to the component to which the accessory tube 20 is connected.

[0153] In some embodiments, accessory tubing 20 may be a sampling tube. For example, accessory tubing 20 may be configured to sample gas at the point where accessory tubing 20 connects to the breathing circuit and provide the gas sample to the component to which it is connected.

[0154] Accessory tube 20 may include a lumen 21. Lumen 21 provides a gas pathway.

[0155] The respiratory system 100B may include a sensor. The sensor may provide a measurement of a quality of gas flow within the breathing circuit. The sensor may be connected to a sensor lead 52 that extends from the sensor to a component of the respiratory system 100B (e.g., the gas source 110 or the humidifier 150). The sensor lead 52 may be positioned in a manner similar to the accessory tubing 20 of FIG. 1B.

[0156] As described in more detail below, a sensor may be provided as part of the sensor connector elbow. In some embodiments, the sensor 53 may be provided at or near the port end 42 of the port connector 30 such that the sensor 53 is at least partially provided within the gas flow path (e.g., lumen) of the port connector 30 when the sensor elbow 60 is connected to the port connector.

[0157] In some embodiments, the sensor connector elbow may provide a sensor port that allows for the insertion of a sensor.

[0158] One or more connectors or connector assemblies 1 may be provided in the breathing circuit.

[0159] The connector elbows 40, 60 may be used to connect one or more accessories (eg, accessory tubing or sensor leads) to connectors located within the breathing circuit.

[0160] A connector elbow may provide a connection from a particular point in the breathing circuit to a component of the breathing system.

[0161] The connector elbow may be an accessory tubing connector elbow (e.g., as shown in FIGS. 2A-2F). The accessory tubing connector elbow may provide a connection between the breathing circuit and the accessory tubing 20.

[0162] The connector elbow may be a sensor connector elbow (e.g., as shown in Figures 2G-2L), which may include one or more sensors.

[0163] The examples below are provided for an accessory tube connector elbow and a sensor connector elbow, it being recognized that features of these two embodiments may be interchanged where the context permits.

[0164] The connector assembly 1 may provide a connection between a breathing circuit and accessory tubing 20, for example as shown in FIG. 1B.

[0165] As mentioned above, it is recognized that the connector assembly 1 may be located anywhere within the breathing circuit (eg, the expiratory tube 172, the inspiratory limb 170, the patient interface 180, and / or the Y-piece 175).

[0166] The connector assembly 1 may be connected to or form part of a breathing gas tube as a breathing gas tube assembly 1a.

[0167] 2A-6B show a connector assembly 1 that may form part of a respiratory gas tubing assembly 1a.

[0168] In some embodiments, the connector assembly includes a port connector 30 and connector elbows 40, 60. Figures 2A-2L show a connector assembly 1, which has a port connector 30 and connector elbows 40, 60.

[0169] The port connector 30 provides connection to the breathing gas tubing 10 and connector elbows 40,60.

[0170] As shown in FIGS. 2A-2F, an accessory tube connector elbow 40 may provide a connection between the accessory tube 20 and the port connector 30.

[0171] 2G-2L, the sensor connector elbow 60 can be connected to the sensor lead wire 52. The sensor lead wire 52 can be connectable and disconnectable to the sensor connector elbow 60, or can be integral with the sensor connector elbow 60.

[0172] The port connector 30 and connector elbows 40, 60 may be releasably coupleable, as described in more detail below.

[0173] 2C and 2I, the port connector 30 includes a lumen 38. The lumen 38 provides a gas pathway from the respiratory gas tubing 10 to additional components to which the port connector 30 may be connected.

[0174] 2C and 2G, the port connector 30 can have a central axis 58. In some embodiments, the central axis 58 can be that of the lumen of the port connector.

[0175] 2A-2F, the accessory tube connector elbow 40 includes a lumen 48. The lumen 48 provides a gas path from the lumen 38 of the port connector 30 to the accessory tube 20.

[0176] 2A to 3D show the port connector 30. FIG.

[0177] The port connector 30 may be connectable to an accessory tubing connector elbow 40 and a sensor connector elbow 60 .

[0178] The port connector 30 is a pressure port connector. In some embodiments, the port connector 30 may be a sampling tube connector. In some embodiments, the port connector 30 may be an accessory port connector.

[0179] As shown in connector assembly 1 in FIGS. 2B and 2D, which show connector assembly 1 as part of a respiratory gas tube assembly 1a, port connector 30 may be located at first end 12 of respiratory gas tube 10.

[0180] The port connector 30 is provided as a separate connector component that is connectable to the respiratory gas tubing 10 .

[0181] The respiratory gas tube 10 may include an intermediate connector configured to provide a connection between the respiratory gas tube 10 and the port connector 30 .

[0182] The port connector 30 can be located anywhere on the tube.

[0183] The port connector 30 may be integrally formed with the respiratory gas tubing 10 .

[0184] In some embodiments, the port connector 30 may be provided on a Y-piece 175, as shown, for example, in Figures 3E and 3F and described in more detail below.

[0185] Figure 2D, for example, shows a port connector 30 having a port 31 extending therefrom. The port 31 provides a passageway into the lumen 38 of the port connector 30, as shown, for example, in Figure 2E.

[0186] Port connector 30 further includes one or more protrusions 39 located within lumen 38 of port connector 30. The protrusions may be configured to prevent internal sealing to prevent misconnection between components. For example, the protrusions may prevent sealing between incompatible components.

[0187] As shown in FIGS. 2E, 2F, and 3D, one or more protrusions 39 extend along the central axis of the port connector 30.

[0188] The protrusions may extend along at least part of, or all of, the length of the lumen 38 of the port connector 30 .

[0189] In some embodiments, the protrusions may be disposed at an angle relative to the length of the port connector 30 .

[0190] The protrusion may extend from one end of the port connector 30 .

[0191] For example, as shown in FIG. 3C, one or more protrusions 39 are equidistantly spaced around the lumen 38 of the port connector 30 .

[0192] In one embodiment, the one or more protrusions 39 may include three protrusions 39 spaced equidistantly around the lumen 38 of the port connector 30 .

[0193] For example, as shown in FIGS. 2A-3D, the port connector 30 may include a port 31.

[0194] 2E and 2F, 2K and 2L show cross-sectional views of the port connector assembly 1. FIG.

[0195] As shown in FIGS. 2E and 2K, the port 31 provided in the port connector 30 can be engaged with the connector elbows 40, 60.

[0196] The port 31 may extend away from the lumen 11 of the breathing gas tube 10 .

[0197] In some embodiments, the port 31 may extend at a substantially perpendicular angle to the respiratory gas tube 10 .

[0198] The port 31 may extend at an angle relative to the port connector 30. For example, the port 31 may extend towards either end of the port connector 30.

[0199] As shown in Figures 3A to 3D, the port 31 may be substantially cylindrical in shape.

[0200] Port 31 has a connection mechanism 32. As shown in Figures 2D, 2J, and 3A, connection mechanism 32 is located around at least a portion of the perimeter. In some embodiments, connection mechanism 32 may be located on an outer surface of port 31 (as shown in Figures 2D, 2J, and 3A). In some embodiments, connection mechanism 32 may be located on an inner surface of port 31.

[0201] The connection mechanism 32 may be a threaded and / or bayonet and / or friction fit connection.

[0202] Port 31 has a distal portion 33. Distal portion 33 is located at distal end 29 of port 31, as shown in Figures 2E and 2K.

[0203] The distal portion 33 has a distal portion tapered surface.

[0204] 2E, 2F, 2K, and 2L, the distal portion tapered surface tapers toward the proximal end 28 of the port 31. In some embodiments, the distal portion tapered surface can taper toward the distal end 29 of the port 31.

[0205] The distal portion tapered surface can transition from a first diameter to a second diameter. The second diameter can be larger than the first diameter. The first diameter can be located farther from the distal end 29 of the port 31 than the second diameter. In some embodiments, the second diameter can be located farther from the distal end 29 of the port 31 than the first diameter.

[0206] When the connector elbows 40, 60 are engaged with the port 31, the distal portion 33 may provide alignment between the connector elbows 40, 60 and the port 31. This may allow a user to more easily make a connection between the connector elbows and the port 31.

[0207] The port 31 has an intermediate portion 34. The intermediate portion 34 may be provided between the distal portion 33 and the sealing portion 35, as shown in Figures 2E and 2K.

[0208] The intermediate portion 34 is configured to maintain alignment of the connector elbows 40, 60 and the port 31 when the connector elbows 40, 60 and the port 31 are engaged. In some embodiments, the intermediate portion 34 may provide a seal with a corresponding surface of the connector elbows 40, 60. In some embodiments, the intermediate portion 34 is configured not to provide a seal with a surface of the connector elbows 40, 60 (e.g., the connector elbow sealing surface 43). In some embodiments, the intermediate portion 34 may include a intermediate portion tapered surface. The intermediate portion tapered surface may taper toward the proximal end 28 of the port 31. In some embodiments, the intermediate portion tapered surface may taper toward the distal end 29 of the port 31.

[0209] 2E, 2F, 2K, and 2L, port 31 further includes sealing portion 35. For example, as shown in FIGS. 2E, 2F, 2K, and 2L, sealing portion 35 is located directly adjacent to intermediate portion 34. In some embodiments, sealing portion 35 may be located further from distal end 29 of port 31 than intermediate portion 34 and / or distal portion 33.

[0210] The sealing portion 35 of the port 31 has a port sealing surface 36. The port sealing surface 36 may be a sealing portion tapered surface.

[0211] 2E, 2F, 2K, and 2L, the sealing portion tapered surface tapers toward the proximal end 28 of the port 31. In some embodiments, the sealing portion 35 tapered surface can taper toward the distal end 29 of the port 31.

[0212] The port sealing surface 36 can transition from a first diameter to a second diameter. The first diameter can be further from the distal end 29 of the port than the second diameter. The second diameter can be larger than the first diameter. In some embodiments, the second diameter can be further from the distal end 29 of the port than the first diameter.

[0213] In some embodiments, the port sealing surface 36 may be located on an interior surface of the port 31 (e.g., as shown in FIGS. 2E, 2F, 2K, and 2L). In other embodiments, the port sealing surface 36 may be located on an exterior surface of the port 31. In embodiments in which the port sealing surface 36 is provided on an exterior surface of the port, it will be appreciated that the connector elbows 40, 60 may include one or more features of the port 31 to facilitate connection.

[0214] A port sealing surface 36 may be located on the end face of the port 31 (eg, to form a face seal with the connector elbows 40, 60).

[0215] The port 31 further includes a proximal portion 37. As shown in Figures 2E and 2F, the proximal portion 37 is located where the port 31 is attached to the port connector 30. The proximal portion 37 allows gas flow between the lumen 38 of the port connector 30 and the lumen 48 of the connector elbows 40, 60.

[0216] 3E and 3F show a connector assembly 1 in which the connector assembly includes a Y-piece 175. FIG.

[0217] As mentioned above, the Y-piece 175 may form part of a breathing circuit.

[0218] The Y-piece 175 may be configured to couple the inhalation tube 170 , the exhalation tube 172 and the patient interface 180 .

[0219] The Y-piece 175 may include the port connector 30 described above.

[0220] The Y-piece 175 may include a first portion 176 and a second portion 177 .

[0221] The second portion 177 may include an inhalation tube port 178 configured to connect with the inhalation tube 170 and / or an exhalation tube port 179 configured to connect with the exhalation tube 172 .

[0222] The first portion 176 may include a patient interface port 182 configured to connect to a patient interface 180 .

[0223] The Y-piece 175 may include at least one swivel 181 configured to allow relative rotation of the first portion 176 with respect to the second portion 177 .

[0224] The port 31 as described above may be located in the first portion 176 .

[0225] The port 31 may extend laterally from the first portion 176 of the Y-piece 176 .

[0226] The port 31 may be located on the opposite side of the first portion 176 from the patient interface port.

[0227] In some embodiments, the port 31 may be located on the inhalation tube port 178 and / or the exhalation tube port 179 .

[0228] In some embodiments, the port may be located at the Y-piece such that the port 31 is located substantially perpendicular to the inhalation limb 170 and / or the exhalation limb 172 .

[0229] In some embodiments, the port 31 may be located at the Y-piece such that the port 31 is located substantially perpendicular to the inhalation tube port 178 and / or the exhalation tube port 179 .

[0230] As mentioned above, connector assembly 1 may include accessory tubing connector elbow 40 (eg, as shown in 2A-2F) and / or sensor connector elbow 60 (eg, as shown in 2G-2L).

[0231] The connector elbows 40, 60 may include accessory ends 41, 51. The accessory ends 41, 51 may be configured to connect with an accessory (e.g., accessory tubing 20 as accessory tubing end 41 and / or sensor lead 52 as sensor lead end 51).

[0232] The accessories 20,52 may be separable and connectable to the accessory ends 41,51.

[0233] The fittings 20,52 may be integrally formed with the connector elbows 40,60.

[0234] As shown in FIG. 2D, the accessory tube connector elbow 40 can include an accessory tube end 41 (as an accessory end).

[0235] 2B and 2E, the accessory tube end 41 is configured to connect with the accessory tube 20. In some embodiments, the accessory tube end 41 can include a friction connection mechanism configured to connect with the accessory tube 20. In some embodiments, the accessory tube end 41 can include a barbed connection mechanism configured to connect with the accessory tube 20.

[0236] In some embodiments, the accessory tube connector elbow includes a lumen that extends from the port end to the accessory connector end.

[0237] In some embodiments, the accessory tube connector elbow is integrally formed with the accessory tube.

[0238] The sensor connector elbow 60 may include one or more sensors 53 .

[0239] The one or more sensors 53 may be configured to measure one or more properties of the gas.

[0240] The sensor 53 may be one or more of: a pressure sensor, a humidity sensor, a temperature sensor, and / or a flow sensor.

[0241] The sensor connector elbow 60 may include a sensor 53 at or near the port end (described in more detail below) such that when the sensor connector elbow 60 is mated with the port connector, the sensor 53 is at least partially disposed within the gas flow path of the port connector.

[0242] For example, as shown in Figures 2J and 4D, the sensor 53 can be located at the probe end 54 of the sensor connector elbow 60. The probe end 54 can extend into the lumen 38 of the port connector 30 when the sensor connector elbow 60 is provided in the port 31 (as shown in Figures 2K and 2L, for example).

[0243] The sensor lead 52 may extend all the way to the sensor 53 (as shown in FIG. 4D) or an additional wire may be provided at the sensor connector elbow to connect the sensor 53 with the sensor lead 52.

[0244] As shown in Figures 2G-2L, 4C, and 4D, the sensor connector elbow 60 can include a sensor lead end 51 (as an accessory end). As shown in Figures 2H and 2I, the sensor lead end 51 is configured to connect with a sensor lead 52.

[0245] In some embodiments, the sensor lead end 51 may include a friction connection mechanism configured to connect with the sensor lead 52. Alternatively or additionally, the sensor lead 52 may be connected to the lead end 51 by one or more clips.

[0246] In some embodiments, the sensor connector elbow 60 is integrally formed with the sensor connector lead 52 at the sensor lead end 51 .

[0247] In some embodiments, the connector elbow may include a lumen extending from the port end to the accessory end, and a sensor at the port end, allowing both accessory tubing and sensor leads to be provided.

[0248] The connector elbows 40, 60 may include a port end configured to mate with a port of a port connector. For example, as shown in Figures 2D and 2J, the accessory connector elbows 40, 60 have a port end 42.

[0249] The port end 42 is configured to connect with the port 31 .

[0250] The connector elbows 40, 60 may have a connector elbow tapered surface that includes an elbow sealing surface 43 of the connectors 40, 60. The connector elbow sealing surface 43 may be provided at the port end 42 of the connector elbows 40, 60.

[0251] 2E and 2K, the connector elbow tapered surface tapers toward the port end 42 of the connector elbow 40, 60. In some embodiments, the sealing portion tapered surface may taper away from the port end 42 of the connector elbow 40, 60.

[0252] Connector elbow sealing surface 43 can transition from a first diameter to a second diameter. The first diameter can be larger than the second diameter. As shown in Figures 4A-4D, the first diameter is farther from port end 42 than the second diameter.

[0253] In some embodiments, the first diameter is closer to the porting end 42 than the second diameter.

[0254] The connector elbow 40, 60 may include an intermediate portion 49. The intermediate portion 49 may be configured to engage with the intermediate portion 34 of the port.

[0255] In some embodiments, the connector elbow sealing surface 43 may be located on an exterior surface of the port end 42 (e.g., as shown in Figures 2E, 2F, 2J, 2K, and 2L). In other embodiments, the connector elbow sealing surface 43 may be located on an interior surface of the port end 42. In embodiments in which the connector elbow sealing surface 43 is provided on the exterior surface of the connector elbow 40, it will be recognized that the port 31 may include one or more features of the accessory tubing connector elbow 40 to facilitate connection.

[0256] In some embodiments, the connector elbow sealing surface 43 may be located on the end face of the connector elbow 40, 60 (eg, to form a face seal with the port 30).

[0257] The angle between the central axis of the accessory tubing end 41 or sensor lead end 51 and the central axis of the port end 42 can vary. In one embodiment, the angle can be from about 10 degrees to about 120 degrees. In another embodiment, the angle can be from about 45 degrees to about 115 degrees. In a third embodiment, the angle can be from about 80 degrees to about 100 degrees. In a fourth embodiment, the angle can be about 90 degrees.

[0258] In some embodiments, the angle between the central axis of the port 31 and the central axis of the lumen of the port connector 30, and the angle between the accessory tubing end 41 or sensor lead end 51 and the port end 42, can total approximately 180 degrees.

[0259] The connector elbows 40 , 60 further include a collar 44 .

[0260] A collar 44 is located at the port end 42 of the connector elbows 40,60.

[0261] The collar 44 is rotatable relative to the connector elbows 40,60.

[0262] 5A to 5C, the collar 44 has a connection mechanism 45 that corresponds to the connection mechanism 32 of the port connector 30. The connection mechanism 45 of the collar 44 is located on the inner surface of the collar 44 and engages with the connection mechanism 32 of the port connector 30.

[0263] The collar 44 may include at least one protrusion 46. The protrusion 46 of the collar 44 is configured to engage with a protrusion 47 of the connector elbow 40, 60.

[0264] The protrusions 46 of the collar 44 may flex upon engaging the protrusions 47 of the connector elbows 40, 60. The protrusions 46 of the collar 44 may exert a compressive force on the protrusions 47 of the connector elbows 40, 60, forcing the connector elbows 40, 60 into a sealing connection with the port 31.

[0265] The protrusion 47 may be configured with a tapered surface that may provide a connection between the connector elbow 40, 60 and the collar 44 when the connector elbow 40, 60 is inserted into the collar 40 during assembly.

[0266] During assembly of the connector elbows 40, 60 and the collar 44, the protrusions 46 of the collar 44 may be configured to flex to allow connection of the connector elbows 40, 60 and the collar 44.

[0267] One or more protrusions 47 on the connector elbows 40,60 may be configured to retain the collar 44 on the connector elbows 40,60.

[0268] As shown in Figures 4A-4D, the one or more protrusions 47 on the connector elbow 40, 60 extend outward from the outer surface of the connector elbow 40, 60. Figures 4A-4D show that the one or more protrusions 47 extend circumferentially around at least a portion of the connector elbow 40, 60. The one or more protrusions 47 are located near the port end 42 of the connector elbow 40, 60.

[0269] The collar 44 may be configured to engage the connection mechanism 32 of the port 31 to force the connector elbow sealing surface 43 into engagement with the port sealing surface 36 .

[0270] Engagement of the connection mechanism 32 with the collar 44 may impart a force to the connector elbow 40, 60 (e.g., via the elbow protrusion 47), which moves the connector elbow 40, 60 into the port 31, engaging the port sealing surface 36 with the connector elbow sealing surface 43 and / or creating a compression force between the port sealing surface 36 and the connector elbow sealing surface 43.

[0271] The connector assembly 1 may include at least one cap 50 (eg, as shown in Figures 2A, 2G, and 3D).

[0272] The cap 50 is configured to engage the port 31 when the port 31 is not connected to the connector elbows 40,60.

[0273] Cap 50 may be configured to form a seal with port 31, optionally in a manner similar to connector elbows 40, 60.

[0274] The cap 50 may be retained on the exterior of the port 31 so as to hold the connector assembly 1 together when not in use.

[0275] As noted above, it is recognized that the features of the port 31 and connector elbows 40, 60 may be interchangeable. As an example, the port 31 may include a collar.

[0276] For example, as shown in FIG. 6A, the connector assembly 1 may be configurable into a first configuration.

[0277] In the first configuration, the accessory tube connector elbow 40 is engaged with the port connector 30 but is rotatable relative to the port connector 30. This allows the user to: accessories (e.g., accessory tubing 20 and / or sensor leads 52) and breathing gas tubing 10, and / or an accessory (e.g., accessory tubing 20 and / or sensor lead wire 52) and an accessory end of a connector elbow (e.g., accessory tubing end 41 and / or sensor lead wire end 51); and / or the central axis 58 of the lumen of the accessory (e.g., accessory tubing 20 and / or sensor lead 52) and port connector, and / or The accessory end of the connector elbow (e.g., accessory tubing end 41 and / or sensor lead wire end 51) and the central axis 58 of the port connector lumen. to be able to align the

[0278] For example, as shown in Figure 6B, the connector assembly 1 may be configurable into a second configuration in which, after alignment as described above with respect to the first configuration, the accessory tube connector elbow 40 is prevented from rotating relative to the port connector 30: accessories (e.g., accessory tubing 20 and / or sensor leads 52) and breathing gas tubing 10, and / or an accessory (e.g., accessory tubing 20 and / or sensor lead wire 52) and an accessory end of a connector elbow (e.g., accessory tubing end 41 and / or sensor lead wire end 51); and / or the central axis 58 of the lumen of the accessory (e.g., accessory tubing 20 and / or sensor lead 52) and port connector, and / or The accessory end of the connector elbow (e.g., accessory tubing end 41 and / or sensor lead wire end 51) and the central axis 58 of the port connector lumen Maintain alignment.

[0279] Additionally or alternatively, after alignment as described above with respect to the first configuration, in the second configuration, there is increased resistance to relative rotation between the accessory tubing elbow connector 40 and the port connector 30 such that: accessories (e.g., accessory tubing 20 and / or sensor leads 52) and breathing gas tubing 10, and / or an accessory (e.g., accessory tubing 20 and / or sensor lead wire 52) and an accessory end of a connector elbow (e.g., accessory tubing end 41 and / or sensor lead wire end 51); and / or the central axis 58 of the lumen of the accessory (e.g., accessory tubing 20 and / or sensor lead 52) and port connector, and / or The accessory end of the connector elbow (e.g., accessory tubing end 41 and / or sensor lead wire end 51) and the central axis 58 of the port connector lumen Maintain alignment.

[0280] In some embodiments, the increased resistance to relative rotation between the accessory tube connector elbow 40 and the port connector 30 in the second configuration may be relative to the resistance to relative rotation between the accessory tube connector elbow 40 and the port connector 30 in the first configuration.

[0281] In some embodiments, the increased resistance to relative rotation between the accessory tube connector elbow 40 and the port connector 30 may mean that a user can still rotate the accessory tube 20 relative to the respiratory gas tube 10 (and / or the accessory tube 20 relative to the central axis 58 of the port connector's lumen) if a sufficiently large force is applied.

[0282] 6A and 6B, it is recognized that accessory tubing 20 may be replaced with sensor lead wire 52.

[0283] As mentioned above, the connector elbows 40, 60 may include a first connection mechanism (eg, connection mechanism 32) and the port connector may include a second connection mechanism (eg, connection mechanism 45).

[0284] As mentioned above, the first connection mechanism and / or the second connection mechanism may be a threaded connection.

[0285] As explained in more detail above, engagement of the first and second connecting mechanisms forces the elbow of the connector elbow sealing surface into engagement with the sealing surface of the port.

[0286] In some embodiments, the first connection mechanism and the second connection mechanism provide a first configuration in a first connector configuration.

[0287] A first connector configuration may be provided where the first and second connection mechanisms are partially engaged (eg when the threaded connection is not in an end position).

[0288] In some embodiments, the first connection mechanism and the second connection mechanism provide a second configuration in the second connector configuration.

[0289] A second connector configuration may be provided where the first and second connection mechanisms are fully engaged (eg, when the threaded connection is in an end position).

Claims

1. 1. A connector assembly, comprising:

1. A port connector, the port connector being integrally formed with a respiratory gas tube or provided as a separate connector component connectable to a respiratory gas tube, the respiratory gas tube being configured to deliver respiratory gas, the respiratory gas tube including a lumen extending from a first end of the respiratory gas tube to a second end of the respiratory gas tube, the port connector including a port extending from the port connector, the port providing a passageway into the lumen of the port connector, the port comprising: a connecting mechanism, and Port sealing surface a port connector including: A connector elbow comprising: an accessory end portion integrally formed with or configured to connect to an accessory; a port end configured to connect with the port; Connector elbow sealing surface, and a collar located at the port end of the connector elbow Including connector elbow and Including, the collar is rotatable relative to the connector elbow, and a connecting mechanism on the collar is configured to engage with the connecting mechanism of the port connector to force the connector elbow sealing surface into engagement with the port sealing surface; In a first configuration, the connection mechanism of the collar is partially engaged with the connection mechanism of the port, and in a second configuration, the connection mechanism of the collar and the connection mechanism of the port are fully engaged; In the first configuration, the connector elbow is engaged with the port connector but can rotate relative to the port connector to align a central axis of the accessory end of the connector elbow with a central axis of the lumen of the port connector, and in the second configuration, after the central axis of the accessory end of the connector elbow is aligned with the central axis of the lumen of the port connector, there is increased resistance to relative rotation between the connector elbow and the port connector, thereby maintaining alignment of the accessory with the lumen of the port connector. Connector assembly.

2. The connector assembly of claim 1 , wherein the accessory is separable and connectable to the accessory end.

3. 3. The connector assembly of claim 1, wherein the connector elbow is an accessory tube connector elbow, the accessory is an accessory tube, and the accessory end is an accessory tube end configured to connect with the accessory tube.

4. 4. The connector assembly of claim 3, wherein in the second configuration, the resistance to relative rotation between the accessory tube connector elbow and the port connector is increased to maintain alignment of the accessory and the respiratory gas tube.

5. The connector assembly of claim 4 , wherein the accessory tube connector elbow includes a lumen extending from the port end to the accessory end.

6. 6. The connector assembly of claim 1, wherein the accessory is an accessory tube, and the connector elbow includes a barbed connection and / or a friction connection at the accessory end configured to connect with the accessory tube.

7. 7. The connector assembly of claim 1, wherein the connector elbow is a sensor connector elbow, the accessory is a sensor lead, and the accessory end is a sensor lead end configured to connect with the sensor lead, and the sensor connector elbow includes a sensor.

8. The connector assembly of any preceding claim, wherein the connection mechanism is located around at least a portion of the perimeter of the port.

9. The connection mechanism of the port is: screw thread Insertion part The connector assembly according to any one of claims 1 to 8, wherein the connector assembly is one or more of the following:

10. 10. The connector assembly of claim 1, wherein the port sealing surface is located on an inner surface of the port and the connector elbow sealing surface is located on an outer surface of the connector elbow, or the port sealing surface is located on an outer surface of the port and the connector elbow sealing surface is located on an inner surface of the connector elbow.

11. The connector assembly of any one of claims 1 to 10, wherein the port includes a distal portion located at a connector elbow connection end, the distal portion including a distal portion tapered surface.

12. The connector assembly of claim 11 , wherein the distal portion tapered surface tapers toward a proximal end of the port.

13. The connector assembly of claim 11 or 12, wherein the distal portion provides alignment of the connector elbow with the port when the connector elbow engages with the port.

14. The connector assembly of any preceding claim, wherein the port includes a sealing portion, the sealing portion including a sealing portion tapered surface.

15. The connector assembly of claim 14 , wherein the sealing portion tapered surface tapers toward a proximal end of the port.

16. 16. A connector assembly according to claim 14 or 15, wherein the sealing portion includes the port sealing surface.

17. 17. The connector assembly of claim 1, wherein the port includes an intermediate portion located between a distal portion located at a connector elbow connection end and a sealing portion included in the port, the intermediate portion being configured to maintain alignment of the connector elbow and the port when the connector elbow and the port are engaged.

18. 18. The connector assembly of claim 1, wherein the port end of the connector elbow includes a connector elbow tapered surface, and the connector elbow tapered surface includes the connector elbow sealing surface.

19. The connector assembly of any preceding claim, wherein the port extends in a direction away from the lumen of the port connector.

20. The connector assembly according to any one of claims 1 to 19, wherein the port extends in a direction substantially perpendicular to a central axis of the lumen of the port connector.

21. 21. The connector assembly of claim 1, wherein engaging the connecting feature of the collar with the connecting feature of the port forces the connector elbow sealing surface into engagement with the sealing surface of the port.

22. The connector assembly of any preceding claim, wherein the collar includes a corresponding connection mechanism on an inner surface of the collar for engaging the connection mechanism of the port connector.

23. A connector assembly according to any preceding claim, wherein the collar is rotatable relative to the connector elbow.

24. 24. The connector assembly of claim 1, wherein the connector elbow includes at least one protrusion extending outward from an outer surface of the connector elbow, the at least one protrusion configured to retain the collar on the connector elbow.

25. A connector assembly as described in any one of claims 1 to 24, wherein the port connector is or includes a Y-shaped piece.

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