Connectors for conduits

Abstract

To provide a connector providing useful alternatives or a system for a plurality of connectors.SOLUTION: The current invention relates to connectors to be provided in fluid communication or engagement either directly with, or via a component to be associated with, a terminal end of a breathing conduit. In at least one embodiment, the connector comprises a body having a first end and a second end, and an internal lumen for the passage of gas between the ends. The first end is engageable with a terminal end of a conduit or a component to be associated therewith. The second end is engageable with another connector. An internal surface of the body at the second end comprises internal connection features for connection with another connector to be received internally. An external surface of the body comprises one or more external alignment feature(s) for aligning the connector or another connection into an aligned orientation for connection therebetween.SELECTED DRAWING: Figure 21

Description

[Technical field]

[0001] The present invention relates to connectors for use in breathing circuits, and more particularly, but not exclusively, to connectors for use at the termination of a breathing conduit. [Background technology]

[0002] Providing a connector for the termination of a breathing conduit is important for the continuous and safe delivery of gas therapy to a patient.

[0003] For example, humidified gas or other gases may be transported through a series of conduits provided for the breathing circuit to supply gas to a patient interface, e.g., nasal cannula, mouthpiece, full face mask, nasal mask, etc. Different conduits may be used for different portions of the breathing circuit.

[0004] For example, the conduit closest to the patient may be a smaller diameter conduit and may need to be more flexible, while the conduit away from the patient may be a larger diameter, less flexible conduit and may contain electronics such as heaters or other sensing circuitry.

[0005] Given the ordering of the different conduits and the various patient interfaces that may be attached to these different conduits, a connector, or system of connectors, that assists the user in making the correct connector connection may prove particularly advantageous. Summary of the Invention [Problem to be solved by the invention]

[0006] Wherever patent specifications, other external documents, or other sources of information are cited herein, this is generally for the purpose of providing material for discussing features of the present invention. Unless specifically stated otherwise, the reference to such external documents should not be construed as an admission that such documents, or such sources of information, are prior art in any jurisdiction or form part of the common general knowledge in the art. [Means for solving the problem]

[0007] It is therefore an object of the present invention to provide a connector, or a system of connectors, that goes at least some way towards addressing the above-mentioned problems or that at least provides a useful option for industry and / or the public.

[0008] From time to time, an airflow source may need to be removed or replaced, or a patient interface may need to be removed from a breathing circuit, or other conduits forming part of the breathing circuit may need to be replaced. If it is difficult or time-consuming to disconnect a particular component (e.g., a conduit or a patient interface) from the circuit, such disconnection may adversely affect maintenance or the continued delivery of gas therapy to the patient, or may frustrate the person performing such disconnection. Furthermore, in an emergency, a time-consuming or difficult connection mechanism may endanger the health of the patient. Therefore, a conduit connector that provides a "quick connect" or "quick disconnect" capability, and further facilitates quick and correct alignment and connection of a new connector, as well as increasing the compatibility of multiple components, will be more comfortable and / or safer for the patient.

[0009] In a first aspect, there is provided a connector for provision at a terminal end of a respiratory conduit, the connector comprising: a body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable with another connector, in use; and an inner surface of the body including one or more internal connection features configured to connect with another connector receivable therein; and The exterior surface of the body includes one or more external alignment features configured to align the connector or another connection into an externally aligned connection therebetween.

[0010] In a second aspect, there is provided a connector for provision at a terminal end of a respiratory conduit, the connector comprising: a body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable with another connector, in use; and an inner surface of the body including one or more internal connection features configured to connect with another connector receivable therein; and One or more external visual aids are configured to provide an externally visible guide for aligning the connector or another connector into an aligned connection therebetween, in use.

[0011] According to the first and second aspects described above, one or more additional features are provided, which are illustrated by the following optional configurations.

[0012] The one or more internal connecting features may be one or more surface features extending radially inward from a surface of the interior sidewall of the body.

[0013] The one or more interconnect features may include one or more tabs.

[0014] The one or more tabs may be raised protrusions.

[0015] The internal connection features may be oriented to be radially aligned with said one or more external alignment features and / or said one or more external visual aids.

[0016] There may be a pair of said interconnect features.

[0017] At least one (or may be one) of the interconnect features may include a longitudinally extending channel or recess, which may be configured to mount, hold, or position a printed circuit board (PCB) arrangement.

[0018] The inner surface may include one or more internal alignment features configured to align at least one connection feature of another connector received therein in an aligned connection orientation therewith.

[0019] The inner surface may include one or more internal alignment features configured to rotate and orient a male connection feature of another connector, in use, into an aligned connection orientation for connection with the connector, or at least into connection with the one or more internal connection features located on or about the inner surface of the body.

[0020] The one or more internal alignment features may be one or more surface features extending radially inward from a surface of the interior sidewall of the body.

[0021] The one or more internal alignment features may include one or more tabs.

[0022] The one or more tabs may be raised protrusions.

[0023] One or more of the tabs may include a pair of shoulders that are angled from each other and from the ends of the tabs at their intersection, the ends of the tabs being located substantially closer to the terminal end of the second end of the connector than the shoulders.

[0024] The one or more internal alignment features may be one or more ribs extending substantially longitudinally of the connector and along the inner surface, which may be a surface of an inner sidewall of the body.

[0025] The internal alignment features may include: 1-10 ribs, or 2-8 ribs, or 4-6 ribs, or 2 ribs, or 3 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs.

[0026] More than one set of internal alignment features may be provided on or about the inner surface of the body, and there may be two sets of alignment features.

[0027] Each set of internal registration portions may include an equal number of internal registration features as another set.

[0028] The interior surface may include two of said internal alignment features.

[0029] The internal alignment feature, in use, may rotationally align a pair of fingers extending from another connector when inserted or brought into engagement or surface contact with said inner surface of the connector.

[0030] The first end may be configured to engage a terminal end of the respiratory conduit.

[0031] The first end may include a sleeve-like portion that is attached to and forms a pneumatic connection with a terminal end of the breathing conduit.

[0032] At least a part of said sleeve-like portion may be insertable into or located or housed within an inner surface or lumen of the terminal end of the respiratory conduit.

[0033] At least a part of said sleeve-like portion may be receivable or may be located or housed on an outer surface of the terminal end of the respiratory conduit.

[0034] The one or more external alignment features and / or the one or more external visual aids may include one or more exterior features extending radially outward from an outer surface of the exterior sidewall of the body.

[0035] The one or more external alignment features may include one or more tabs.

[0036] The one or more tabs may be raised protrusions.

[0037] The one or more external alignment features may be one or more ribs (or one or more protrusions) extending substantially longitudinally of the connector and along said outer surface, which may be a surface of the outer sidewall of the body.

[0038] At least one, or each, rib or projection may include a pair of shoulders that are angled from each other at the intersection of the shoulders and from an end of the rib or projection that is located substantially toward a terminal end of the second end of the connector than the shoulders.

[0039] At least one, or each, rib or protrusion may be substantially tongue-shaped and / or substantially triangular and / or substantially tapered towards an end.

[0040] The external alignment features may include: 1-10 ribs, or 2-8 ribs, or 4-6 ribs, or 2 ribs, or 3 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs.

[0041] The external alignment features may be evenly or equidistantly spaced, arrayed or positioned from one another on the circumference of the outer surface or around the periphery of the radius.

[0042] An external alignment feature may be a protrusion having a length extending substantially longitudinally of the connector and along the outer surface, and a height of the protrusion from the outer surface varies along the length.

[0043] The height of the external alignment feature may taper along the length.

[0044] The height of said protrusion is: a. lowered in a direction extending from the base of the external alignment feature toward the termination of the second end of the connector; or b. increasing in a direction extending from the base of the external alignment feature toward the termination of the second end of the connector It can be either.

[0045] Provided at or directed towards the base of substantially one or each of the external alignment features may be a stepped projection, which is a protrusion that extends radially outwardly more than an adjacent portion of the external alignment feature.

[0046] The stepped projection may be configured to be co-located or co-locatable with a reciprocally shaped recess or notch in at least a portion of the sleeve-like portion of the other connector when the connector and the other connector are in a condition to support a connection between the two connectors while the two connectors are connected.

[0047] The stepped projection may be configured to act as a key that reciprocally seats against a reciprocally shaped recess or notch in the component to which the connection is made.

[0048] Provided at or towards the base of substantially one or each said external alignment feature may be a recess or notch configured to receive a protrusion or projection of a reciprocally shaped portion of another connector.

[0049] The recess or cutout portion may be configured to be co-located or co-locatable with a reciprocal protrusion or projection of at least a portion of the sleeve-like portion of another connector when the connector is brought into a state supporting a connection between the two connectors while the two connectors are connected.

[0050] The recess or notch may be configured to act as a keyhole that reciprocally seats against a comparably shaped protrusion or projection of the component to which the connection is made.

[0051] The stepped projection or recess or cutout may be of the following shapes or profiles to seat or receive a substantially reciprocally shaped recess or cutout, or a projection or protrusion: semicircular, triangular, rectangular or other rectilinear or geometric shape, elliptical, wedge shaped.

[0052] A radially extending flange or lip may protrude from the outer surface of the body.

[0053] The flange or lip may define substantially a stop end relative to the point or length of maximum engagement of another connector when engagement is made with the outer surface of the connector.

[0054] The flange or lip comprises: i. one or more radial and / or longitudinal recessed or grooved areas, or ii. one or more radially and / or longitudinally extending protruding regions; may include one or both of the following:

[0055] The flange or lip may extend longitudinally so as to be configured to engage a terminal end of a respiratory conduit.

[0056] The sheath may be an overmolded sheath and provides pneumatic engagement between an outer surface of the body and the terminal end of the respiratory tube, and the sheath may pneumatically engage the first end of the connector and the terminal end of the respiratory tube.

[0057] The sheath comprises: i. one or more radial and / or longitudinal recessed or grooved areas, or ii. one or more radially and / or longitudinally extending protruding regions; may include one or both of the following:

[0058] The recessed or grooved region and / or the extending protruding region of the sheath may be wholly or at least partially aligned with the recessed or grooved region and / or the extending protruding region of the flange or lip.

[0059] An inner surface of the body, which may face the second end of the connector, may be configured to mount, hold, or position a printed circuit board (PCB) arrangement.

[0060] The PCB functional circuits may be for: control, sensing (eg temperature, humidity, flow), heating (eg heater wires) or other electronic components for a breathing conduit used as part of a breathing circuit.

[0061] The connector may provide multiple separate sealing surfaces where separate connections can be made with separate other connectors, or there may be two separate sealing surfaces to fit two different connectors.

[0062] The connector may be configured to provide a first separate sealing surface when a separate connection is made therewith by another connector, the first sealing surface comprising: - a sidewall surface of a radially extending flange or lip projecting from an outer surface of the body, said sidewall substantially facing a surface of a termination of another connector which may be brought into support on said sidewall; or - an inner surface that is substantially at or towards the terminus of the second end of the connector when brought into support on a radially outwardly facing surface of another connector, e.g. a radially outwardly facing surface of another connector It is determined by one or both of the following:

[0063] The connector may be configured such that the body at the second end is configured to seal onto a second sealing surface of another connector, the second sealing surface comprising: an interior sidewall surface provided substantially at or oriented toward a base end of the second end of another connector, and in use a body of the second end of the connector is brought and supported substantially on the interior sidewall surface or at a location along the interior sidewall surface at or oriented toward the base end of the other connector; It is defined by:

[0064] The connector may be configured such that the body at the second end is configured to seal on a third sealing surface of another connector, the third sealing surface comprising: an inner sidewall surface of a projection extending radially inward from an inner sidewall surface of the second end of the other connector when the body of the second end is brought to rest substantially on or along the surface of the projection of the other connector and supported thereon It is defined by:

[0065] The connector may be configured such that the body at the second end is configured to seal on a fourth sealing surface of another connector, the fourth sealing surface comprising: an interior sidewall surface of a second end of another connector, the interior sidewall surface extending radially outward from one or more male connection features (such as one or more locking fingers) as a shoulder, with a portion of the body of the second end of the connector being substantially brought against and supported on the radially outward surface of the shoulder; It is defined by:

[0066] The connector may be configured such that the body at the second end is configured to seal on a fifth sealing surface of another connector, the fifth sealing surface comprising: The radially outward facing surface of one or more male connection features, particularly the radially outward facing surface of one or more locking fingers that are mounted within the second end of another connector. It is defined by:

[0067] Where the connector may be configured such that the body of the second end seals onto a sixth sealing surface of another connector, the sixth sealing surface may comprise: a shoulder side or ledge extending radially outward from one or more male connection features, and in particular a radially outwardly extending surface or ledge extending radially outward from one or more locking fingers that are mounted within the second end of another connector; or a side or base extending as a floor within an outer edge of a shoulder extending radially outward from one or more male connection features of another connector, such side or base extending as a floor being seated within a second end of the other connector; It may be defined by one or both of the following:

[0068] The connector's external alignment features include one or more: Preventing connection of an internal connection feature of the connector with another connector when one or more external alignment features of the connector and the external alignment feature of the other connector are in an unaligned orientation; and / or When one or more external alignment features of the connector and the external alignment feature of the other connector are in an aligned orientation, they enable connection of the internal connection features of the connector with the other connector. It may be shaped or configured as such.

[0069] In a third aspect, there is provided a connector for provision at a terminal end of a respiratory conduit, the connector comprising: a body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable with another connector, in use; and an inner surface of the body including one or more internal male connection features extending therein, the internal male connection features being configured to mate with a female end or portion of another connector capable of receiving said male connection features, the male internal connection features including one or more (which may be a pair of) locking fingers; and The connector also: a. surrounding the one or more internal male connection features is an outer wall, the outer surface of the outer wall being tapered, tapering substantially in a longitudinal direction of the connector; b. Surrounding the one or more internal male connection features is an exterior wall, the exterior surface or at least the exterior surface of the exterior wall being: one or more external alignment features configured to align the connector or another connection therebetween in an externally aligned connection, and / or one or more external visual aids configured to provide an externally visible guide for aligning the connector or another connector in an aligned connection, in use. Contains Includes one or both of the following.

[0070] In a fourth aspect, there is provided a connector for provision at a terminal end of a respiratory conduit, the connector comprising: a body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable with another connector, in use; and an inner surface of the body including one or more internal male connecting features extending therein that are configured to connect with a female end or portion of another connector capable of receiving said male connecting features, the internal male connecting features including one or more (which may be a pair of) locking fingers; and The connector further includes an outer wall surrounding the one or more internal male connecting features, an outer surface of the outer wall being tapered, tapering in a direction substantially longitudinally of the connector.

[0071] In a fifth aspect, there is provided a connector for provision at a terminal end of a respiratory conduit, the connector comprising: a body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable with another connector, in use; and an inner surface of the body including one or more internal male connecting features extending therein that are configured to connect with a female end or portion of another connector capable of receiving said male connecting features, the internal male connecting features including one or more (which may be a pair of) locking fingers; and The connector further includes an exterior wall surrounding the one or more internal male connecting features, the exterior surface, or at least the exterior surface, of the exterior wall comprising: one or more external alignment features configured to align an outer wall of the connector, or the connector, or another connection, with an externally aligned connection therebetween, and / or one or more external visual aids configured to provide an externally visible guide for aligning the connector, or another connector, with an externally aligned connection therebetween, in use. Includes.

[0072] According to the third, fourth and fifth aspects above, there is provided one or more additional features as described by optional configurations above or below.

[0073] The diameter of the outer wall of the second end may be smallest at the terminal end of the second end and increases in diameter in a direction extending away from the terminal end of the second end towards the first end.

[0074] The one or more locking fingers may be substantially housed within the second end of the connector.

[0075] A space may be defined between an outer surface of the one or more internal male connection features and an inner surface of the outer wall.

[0076] The outer wall may include one or more alignment features and / or one or more external visual aids configured to align the outer wall and the connector, or another connection, in an aligned connection therebetween, and / or one or more external visual aids configured to provide an externally visible guide for aligning the connector, or another connector, in use, in an aligned connection therebetween.

[0077] The one or more internal male connection features may be oriented such that the one or more external alignment features and / or the one or more external visual aids are radially aligned.

[0078] The one or more external alignment features may include one or more cut-outs in a termination face of the outer wall of the second end, the cut-outs configured to be received by a substantially reciprocally shaped portion on the connector with which the outer wall is placed.

[0079] The external alignment features may be evenly or equidistantly spaced, arrayed or positioned from one another circumferentially about the face of the termination of the outer wall of the second end portion.

[0080] The external alignment feature may be configured to be co-located or co-locatable with a reciprocally shaped protrusion on the sleeve-like portion of another connector when the external alignment feature is brought into a condition supporting a connection between the second end terminal surface of the connector and the other connector while the two connectors are connected.

[0081] The locking fingers may include a recess in an outer surface of each finger that receives an internal connection feature, such as a raised protrusion that may extend in a radially inward direction toward the recess or tab of another connector that it is configured to connect to.

[0082] The recess may be shaped to receive an internal connection feature of another connector.

[0083] The tips of the locking fingers may be at least partially chamfered.

[0084] Provided in the termination surface of the outer wall of the second end of the connector may be a recess or notch configured to receive or be seated in connection with a protrusion or projection of a comparably shaped portion of another connector.

[0085] The recess or cutout portion may be configured to be co-located or co-locatable with a reciprocal protrusion or projection of at least a portion of the sleeve-like portion of another connector when the connector is brought into a state supporting a connection between the two connectors while the two connectors are connected.

[0086] The recess or notch may be configured to act as a keyhole for reciprocal mounting with a comparably shaped protrusion or projection of the component to which the connection is made.

[0087] Provided at or directed toward substantially the termination surface of the outer wall of the second end of the connector may be a longitudinally extending protrusion, which may be a projection that extends longitudinally beyond an adjacent portion of the termination surface of the outer wall of the second end of the connector.

[0088] The protrusion may be configured to be co-located or co-locatable with a reciprocally shaped recess or notch in at least a portion of a portion of the other connector when the connector and the other connector are in a condition to support a connection between the two connectors while the two connectors are connected.

[0089] The protrusions may be configured to act as keys for reciprocal installation into compatibly shaped recesses or notches in the components to which the connection is made.

[0090] The alignment feature may be a recess or cutout of the following shapes or profiles to seat with or receive a substantially reciprocally shaped protrusion or projection of another connector: semicircular, triangular, rectangular or other rectilinear or geometric shape, oval, wedge shaped.

[0091] The outer wall may be a sleeve configured for use as a 22mm male taper connector to another connector that includes a female connection feature.

[0092] The outer wall may be a sleeve configured for use as a 22 mm female taper connector to another connector that includes a male connection feature.

[0093] The connector body may be formed of polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS) or polypropylene (PP).

[0094] The body of the connector may include an outwardly flared portion disposed at the first end of the connector.

[0095] The inner surface of the second end of the body may further include a projection for engagement (e.g., an interference fit) with a commensurately shaped portion of another connector received by or within the inner surface surrounded by the outer wall.

[0096] The projection may extend radially outward from one or more locking fingers as a shoulder and may extend longitudinally in a direction toward the open end of the second end of the connector.

[0097] The projections serve as shoulders: One or more locking fingers, A base that extends as a floor from the inner surface of the exterior wall The shoulder may extend longitudinally in a direction toward the open end of the second end of the connector.

[0098] A space may be defined between the radially outward facing surface of the shoulder and the inner surface of the outer wall, said space being capable of receiving an end portion of another connector, the end portion of the other connector being received as an interference fit between the outward facing surface of the shoulder and the inner surface of the outer wall.

[0099] Substantially adjacent or at least partially abutting the shoulder and the inner surface of the outer wall may be a base, the base extending as a floor between the outer edge of the shoulder and the inner surface of the wall.

[0100] The base may define a sealing surface and a termination or surface of a termination of another connector may be engaged therewith to form a pneumatic connection.

[0101] A cuff may be provided about the first end of the connector body and at least partially overlap a portion of the second end of the connector body.

[0102] The cuff may be preformed or may be an overmolded material that is overmolded around the connector body.

[0103] The cuff may be dimensioned such that the outer surface of the outer wall provides a relatively smooth or continuous outer surface contour, with the outer surface substantially abutting or substantially adjacent the intersection with the cuff.

[0104] The cuff may include an indicator of the size of the connector to which it is attached or for the size of the particular component or components associated with the connector (the component may be a patient interface, for example a nasal cannula).

[0105] The cuff may be color coded as an indicator of the size of the connector or for a particular component or size of a component associated with the connector (the component may be a patient interface, for example a nasal cannula).

[0106] The cuff may be dimensioned to transition from a substantially circular outer contour substantially abutting or substantially adjacent to the outer surface of the outer wall of the connector to a substantially square outer contour disposed substantially (which may be entirely) around the first end of the connector body.

[0107] The cuff extends from the second end of the connector body and may overlap an outer surface of the respiratory tube to which the connector is engaged or engageable in use, or the cuff extends to overlap at least a portion of a component associated with the terminal end of the respiratory tube.

[0108] The cuff may be of an elastic or elasticised material and may be silicone or a thermoplastic elastomer (TPE).

[0109] The body of the connector may include at least one recess or groove shaped to receive one or more splines on the inner surface of the cuff.

[0110] The swivel connector part may, in use, be connected to the first end of the connector.

[0111] The swivel connector may be configured to connect with a terminal end of a conduit, and the swivel connector is configured to connect to the body of the connector.

[0112] The connector may include at least one retaining projection, the retaining projection extending in a radially inward direction from the body of the connector.

[0113] The retention lugs are: a sloped surface that may be sloped away from the first end of the body; A surface substantially perpendicular to the inner wall of the body of the connector may include one or both of the following:

[0114] The connector may include at least one mounting arm.

[0115] The mounting arm may include at least one retaining protrusion.

[0116] At least one mounting arm may be supported on only one side relative to the body of the connector to allow flexibility of the mounting arm at least in a radial direction relative to the body of the connector, optionally radially inward, outward or both.

[0117] The connector may include at least one cutout area disposed about at least a portion of the mounting arm, the cutout area facilitating radial flexibility.

[0118] The connector may include a pair of mounting arms.

[0119] The mounting arms may be mounted in recesses or grooves shaped to receive splines on the inner surface of the cuff.

[0120] The body or mounting arm of the connector may include a recess for receiving a portion of the swivel connector part.

[0121] The swivel connector part may connect to the conduit via a thread.

[0122] A swivel connector may be connected to the first end to prevent axial but rotationally permit relative movement between the connector body and the swivel connector.

[0123] A swivel connector may include one or more surfaces that form a rotatable seal with an inner surface of the connector body.

[0124] The connector may be configured to provide sealing on a first separate surface when a separate connection is made by another connector, the first surface comprising: The terminating face of the second end of a connector when support is provided against a flange or lip (or shoulder) that projects outwardly or away from the outer surface of the body of another connector It is defined by:

[0125] The connector may be configured to provide sealing on a second separate surface when a separate connection is made by another connector, the second surface comprising: an interior sidewall surface substantially at or toward a base end of the second end of the connector, where a portion of the other connector (e.g., a lip or flange, which may include a shoulder) is provided with support to or along the interior sidewall surface substantially at or toward the base end; It is defined by:

[0126] The connector may be configured to provide sealing on a third separate surface when a separate connection is made by another connector, the third surface comprising: an inner sidewall surface of a projection extending radially inwardly of the inner sidewall surface of the second end, where a portion of the other connector (such as a lip or flange, which may include a shoulder) is provided with support substantially at or along the face of the projection; It is defined by:

[0127] The connector may be configured to provide sealing on a fourth separate surface when a separate connection is made by another connector, the fourth surface comprising: an interior sidewall surface of the second end of the connector, the interior sidewall surface extending radially outward from the one or more male connection features (such as one or more locking fingers) as a shoulder, and a portion of the other connector (such as a lip or flange, which may include a shoulder) is provided with support substantially against the radially outward surface of the shoulder; It is defined by:

[0128] The connector may be configured to provide sealing on a fifth separate surface when a separate connection is made by another connector, the fifth surface comprising: the radially outward facing surface of one or more male connection features, particularly the radially outward facing surface of one or more locking fingers located within the second end of the connector; It is defined by:

[0129] The connector may be configured to provide sealing on a sixth separate surface when a separate connection is made by another connector, the sixth surface comprising: a shoulder side or ledge extending radially outward from one or more male connection features, particularly a radially outwardly extending surface or ledge extending radially outward from one or more locking fingers located within the second end of the connector; or a base extending as a floor between the outer edge of a side or shoulder extending radially outward from one or more male connection features and the inner surface of the wall; It is determined by one or both of the following:

[0130] The connector's external alignment features include one or more: Prevents connection of an internal connection feature of the connector with another connector when one or more external alignment features of the connector and the external alignment feature of the other connector are in an unaligned orientation; and / or When one or more external alignment features of the connector and the external alignment feature of the other connector are in an aligned orientation, they enable connection of the internal connection features of the connector with the other connector. It may be shaped or configured as such.

[0131] In a sixth aspect: a body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; There is provided a connector for use with a conduit for providing gas to a user, comprising: the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable with another connector, in use; and the exterior surface of the body includes a cuff disposed at least substantially around the first end of the connector body (and may at least partially overlap a portion of the second end of the connector body), the cuff extending substantially longitudinally for at least a portion of the length of the respiratory tube engaged or engageable with the first end; and The cuff is a stretchable or elastic type material.

[0132] According to the above aspect, one or more additional features are provided as described above or in the following optional configurations.

[0133] The overlap of the respiratory tube and the cuff may, at least in part, facilitate the relief of strain that would otherwise be imparted to the engagement or connection between the respiratory conduit and the first end or a component associated with the first end.

[0134] The diameter of the outer wall of the second end may be smallest at the terminal end of the second end and increases in diameter in a direction extending away from the terminal end of the second end towards the first end.

[0135] The one or more locking fingers may be substantially housed within the second end of the connector.

[0136] A space may be defined between an outer surface of the one or more internal male connection features and an inner surface of the outer wall.

[0137] The outer wall may include one or more alignment features and / or one or more external visual aids configured to align the outer wall and the connector, or another connection, into an aligned connection therebetween, and / or one or more external visual aids configured to provide an externally visible guide for aligning the connector, or another connector, into an aligned connection therebetween, in use.

[0138] The locking fingers may include a recess in an outer surface of each finger that receives an internal connection feature, such as a raised protrusion, that may extend in a radially inward direction toward the recess or tab of another connector configured to be connected thereto.

[0139] The recess may be shaped to receive an internal connection feature of another connector.

[0140] The tips of the locking fingers may be at least partially chamfered.

[0141] Provided in the termination surface of the outer wall of the second end of the connector may be a recess or notch configured to receive a protrusion or projection of a comparably shaped portion of another connector.

[0142] The recess or cutout portion may be configured to be co-located or co-locatable with a reciprocal protrusion or projection of at least a portion of the sleeve-like portion of another connector when the connector is brought into a state supporting a connection between the two connectors while the two connectors are connected.

[0143] The recess or notch may be configured to act as a keyhole to reciprocally seat with a reciprocally shaped protrusion or projection of the component with which it is connected.

[0144] Provided substantially at or directed towards the termination surface of the outer wall of the second end of the connector may be a longitudinally extending protrusion, the protrusion being a projection that extends longitudinally beyond an adjacent portion of the termination surface of the outer wall of the second end of the connector.

[0145] The protrusion may be configured to be co-located or co-locatable with a reciprocally shaped recess or notch in at least a portion of a portion of the other connector when the connector and the other connector are in a condition to support a connection between the two connectors while the two connectors are connected.

[0146] The protrusion may be configured to act as a key to reciprocally locate with a reciprocally shaped recess or notch in the component with which it is connected.

[0147] The stepped projection or recess or cutout may be of the following shapes or profiles to seat or receive a substantially reciprocally shaped recess or cutout, or a projection or protrusion: semicircular, triangular, rectangular or other rectilinear or geometric shape, elliptical, wedge shaped.

[0148] The outer wall may be a sleeve configured for use as a 22mm male taper connector to another connector that includes a female connection feature.

[0149] The outer wall may be a sleeve configured for use as a 22 mm female taper connector to another connector that includes a male connection feature.

[0150] The connector body may be formed of polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS) or polypropylene (PP).

[0151] The inner surface of the second end of the body may further include a projection for engagement (e.g., an interference fit) of a correspondingly shaped portion of another connector received by or within the inner surface bounded by the outer wall.

[0152] The projection may extend radially outward from one or more locking fingers as a shoulder and may extend longitudinally in a direction toward the open end of the second end of the connector.

[0153] The projections serve as shoulders: One or more locking fingers, A base that extends as a floor from the inner surface of the exterior wall and the shoulder may extend longitudinally in a direction toward the open end of the second end of the connector.

[0154] A space may be defined between the radially outward facing surface of the shoulder and the inner surface of the outer wall, said space being capable of receiving an end portion of another connector, the end portion of the other connector being received between the outward facing surface of the shoulder and the inner surface of the outer wall as an interference fit.

[0155] Substantially adjacent or at least partially abutting the shoulder and the inner surface of the outer wall may be a base, the base extending as a floor between the outer edge of the shoulder and the inner surface of the wall.

[0156] The base may define a sealing surface with which a surface of the termination or a termination of another connector may be engaged to form a pneumatic connection.

[0157] A cuff may be provided about the first end of the connector body and may at least partially overlap a portion of the second end of the connector body.

[0158] The cuff may be preformed or may be an overmolded material that is overmolded around the connector body.

[0159] The cuff may be dimensioned such that the outer surface of the outer wall provides a relatively smooth or continuous outer surface contour, with the outer surface substantially abutting or substantially adjacent the intersection with the cuff.

[0160] The cuff may include an indicator of the size of the connector to which it is attached, or for a particular component, or for the size of a component associated with the connector (the component may be a patient interface, for example a nasal cannula).

[0161] The cuff may be color coded as an indicator of the size of the connector or for a particular component or size of a component associated with the connector (the component may be a patient interface, for example a nasal cannula).

[0162] The cuff may be dimensioned to transition from a substantially circular outer contour when substantially abutting or substantially adjacent to the outer surface of the outer wall of the connector, to a substantially square outer contour disposed substantially (which may be entirely) around the first end of the connector body.

[0163] The body of the connector may include at least one recess or groove shaped to receive one or more splines on the inner surface of the cuff.

[0164] The swivel connector part may, in use, be connected to the body of the connector.

[0165] The swivel connector may be configured to connect with a terminal end of a conduit, and the swivel connector is configured to connect with a body of the connector.

[0166] The connector may include at least one retaining projection, the retaining projection extending in a radially inward direction from the body of the connector.

[0167] The retention lugs are: The inclined surface may be inclined away from the first end of the body. A surface substantially perpendicular to the inner wall of the body of the connector may include one or both of the following:

[0168] The connector may include at least one mounting arm.

[0169] The mounting arm may include at least one retaining protrusion.

[0170] At least one mounting arm may be supported on only one side relative to the body of the connector, allowing flexibility of the mounting arm at least radially relative to the body of the connector, and optionally radially inward, outward or both.

[0171] The connector may include at least one cutout area disposed about at least a portion of the mounting arm, the cutout area facilitating radial flexibility.

[0172] The connector may include a pair of mounting arms.

[0173] The mounting arms may be mounted in recesses or grooves shaped to receive the splines on the inner surface of the cuff.

[0174] The body or mounting arm of the connector may include a recess for receiving a portion of the swivel connector part.

[0175] The swivel connector part may connect to the conduit via a thread.

[0176] A swivel connector may be connected to the first end such that relative movement between the connector body and the swivel connector is prevented axially but permitted rotationally.

[0177] A swivel connector may include one or more surfaces that form a rotatable seal with an inner surface of the connector body.

[0178] The connector's external alignment features include one or more: Prevents connection of an internal connection feature of the connector with another connector when one or more external alignment features of the connector and the external alignment feature of the other connector are in an unaligned orientation; and / or When one or more external alignment features of the connector and the external alignment feature of the other connector are in an aligned orientation, they enable connection of the internal connection features of the connector with the other connector. It may be shaped or configured as such.

[0179] In a seventh aspect, there is provided the connector of the first or second aspect, wherein said further connector is configured to engage or be engageable with the connector.

[0180] In an eighth aspect, a connector is provided, said connector configured to be engaged or engageable with a second connector, the second connector being defined by the connector of the first or second aspect.

[0181] The connector may seal with at least one of the following surfaces of the second connector: The outer surface of the body, A radially extending flange or lip sidewall; An exterior surface of a cuff disposed around the first end of the connector body.

[0182] In a ninth aspect, there is provided a connector for provision at a terminal end of a respiratory conduit, the connector comprising: A body including a first end and a second end. Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit, or at least with a component associated with a terminal end of the respiratory tube; and the second end is engaged or engageable, in use, with the second connector; and an inner surface of the body including one or more internal connection and / or alignment features configured to connect with the second connector receivable therein; and One or more of the interconnection and / or alignment features include: Radially inwardly projecting protrusions or ribs A recess that projects radially outward from a notional or actual inner wall or interior surface Includes at least one of the following:

[0183] The alignment feature may be configured to align the connector with a second connector.

[0184] The connection feature may be configured to facilitate a connection between the connector and a second connector.

[0185] The connection and / or alignment features may, at least in part, provide a sealing or sealing surface between the connector and a second connector.

[0186] At least one of the ribs or protrusions of the connector may be configured to fit into a corresponding recess of the second connector (e.g., a recess of a cuff or sleeve) and / or at least one recess of the connector is configured to fit into a corresponding rib or protrusion of the second connector.

[0187] One or more internal connection and / or alignment features may be co-located or co-locatable to key with a reciprocally shaped protrusion or recess in a portion of the second connector.

[0188] At least one of the ribs and / or recesses may be disposed circumferentially on the inner surface of the connector, and the ribs and / or protrusions may be equidistantly spaced apart circumferentially on the inner surface of the connector.

[0189] There may be one or more or a plurality of ribs and / or recesses, there may be two, or three, or four, or five, or six ribs and / or recesses.

[0190] There may be four ribs.

[0191] At least one projection or rib may extend substantially longitudinally along the inner surface of the body.

[0192] At least one protrusion or rib may extend from substantially at or near a terminal end of the second end of the connector in a direction toward the first end of the connector.

[0193] At least one recess may be located on a sidewall or an inner surface of the body of the connector, the at least one recess being configured to accommodate one or more associated protrusions of the second connector when the second connector is brought into mating or connection with the connector.

[0194] The connector may be configured with at least a first inner surface for sealing with an outer portion of the second connector when connected or mated by or with the second connector, the first inner surface being provided by a circumferential portion of an inner surface of the body, the circumferential portion may be located at or near a second end of the body of the connector, and the first inner surface is provided such that it is substantially continuously around and substantially circumferentially mountable to the outer portion of the second connector with which it is in a connecting or mating arrangement.

[0195] The alignment or connection feature may form at least a portion of the first inner surface of the body.

[0196] The at least one protrusion or rib may form at least a portion of the first inner surface.

[0197] At least one projection or rib may extend substantially longitudinally along a sidewall of the first inner surface.

[0198] At least one protrusion or rib may extend substantially from or near a terminal end of the second end of the connector in a direction toward the first end of the connector.

[0199] The first inner surface may be substantially curved when viewed in cross section.

[0200] The profile of the first inner surface (eg, the radius of curvature and point of curvature of the first inner surface) may match the exterior profile (eg, the exterior curve or curvature) of the cuff of the second connector.

[0201] At least one alignment or connection feature, which may be a protrusion or rib, may be of sufficient dimension so that, in use, it extends substantially to the outermost apex of the exterior profile of the second connector.

[0202] At least one alignment or connection feature (which may be a protrusion or rib) may be of sufficient dimension so that, in use, it extends to a position substantially between the outermost apex of the outer profile of the cuff of the second connector and the end of the cuff nearest the termination of the second connector.

[0203] At least one alignment or connection feature (which may be a protrusion or rib) may be of sufficient dimension so that, in use, it extends to a position substantially between the outermost apex of the outer profile of the cuff of the second connector and the end of the cuff nearest the end of the second connector that is connected to the conduit.

[0204] The connector may be configured to seal with a second inner surface when connected or mated by or with said second connector, the second surface being defined by a substantially radially extending flange or lip that projects radially inwardly from an inner surface of the body as a sidewall surface, said sidewall surface providing a surface.

[0205] The faces may be of sufficient size to seal with respective faces of the second connector.

[0206] The surface may be configured to provide a substantially planar surface with which a portion or surface of the second connector can mate or engage.

[0207] The face may be oriented to substantially face towards the second end of the connector.

[0208] The face may be configured to mate or seal with a sidewall, or a ledge, or a lip, or a base, or an end of the second connector.

[0209] A radially extending flange or lip may include at least one of said internal connection or alignment features.

[0210] At least one of the connecting or alignment features may be a rib or a protrusion.

[0211] The face may include one or more internal connection and / or alignment features that are co-located or co-locatable for keying with a reciprocally shaped protrusion or recess in a portion of the second connector.

[0212] At least one recess may be located in a sidewall or an inner surface of the connector, the at least one recess accommodating a protrusion of said second connector.

[0213] The recess may be a depression or other surface relief feature provided in the surface.

[0214] The depression or other surface relief feature may be a cut-out in the face.

[0215] The recess may be configured to accommodate or be able to receive an associated protrusion or other geometric feature of the second connector when the second connector is brought into mating or connection with the second inner surface.

[0216] At least one protrusion may be located on a sidewall or an inner surface of the connector, the at least one protrusion receiving a recess in said second connector.

[0217] The connector may be configured with at least a third inner surface for sealing with an outer portion of the second connector when connected or mated by or with the second connector, the third inner surface being provided by a circumferential portion of the inner surface of the body, which may be located at or near the first end of the body or at or near the second end of the body of the connector, and may be provided such that the third inner surface is substantially continuously around and substantially circumferentially mountable to the outer portion of the second connector with which it is in a connecting or mating arrangement.

[0218] The alignment or connection feature may form at least a portion of a third, inner surface of the body.

[0219] The at least one recess may form at least a portion of the third inner surface.

[0220] At least one recess may be shaped to receive a projection of the second connector.

[0221] The recess may include a pair of shoulders that are angled from each other and from the end at a shoulder intersection, with the end of the recess being located substantially toward the first end of the connector than the shoulders.

[0222] The at least one recess may be substantially tongue-shaped and / or substantially triangular and / or substantially tapered towards an end.

[0223] The recess may be a longitudinal channel.

[0224] The connector may include one or more sealing surfaces, the one or more sealing surfaces comprising: a first sealing surface as described above; a second sealing surface as described above; A third sealing surface as described above It is defined by one or more of the following:

[0225] An adapter may be configured to facilitate a connection between two connectors, with the connector of any of the first to ninth aspects being provided as part of the adapter.

[0226] The breathing conduit assembly consists of: A breathing tube, and The connector according to any one of the first to ninth aspects It may include, The connector is coupled to or associated with or related to a respiratory conduit.

[0227] The connector's external alignment features include one or more: Prevents connection of an internal connection feature of the connector with another connector when one or more external alignment features of the connector and the external alignment feature of the other connector are in an unaligned orientation; and / or When one or more external alignment features of the connector and the external alignment feature of the other connector are in an aligned orientation, they enable connection of the internal connection features of the connector with the other connector. It may be shaped or configured as such.

[0228] In a tenth aspect, a connector assembly is provided, the connector assembly including a first connector and a second connector, the first connector for connecting with the second connector; The first connector is: a first connector body including a first end and a second end, the first connector body defining a lumen therein for passing gas between each of the first and second ends; Including, the first end is engaged or engageable, in use, with a terminal end of the respiratory conduit or a component associated with a terminal end of the respiratory conduit; and the second end is engaged or engageable, in use, with the second connector; and the inner surface of the body includes one or more internal connection features; and an exterior surface of the body including one or more external alignment features; The second connector is: a second connector body including a first end and a second end, the body defining a lumen therein for passing gas between each of the first and second ends; the first end is engaged or engageable, in use, with a terminal end of a respiratory conduit or a component associated with a terminal end of a respiratory tube; and the second end is engaged or engageable, in use, with the first connector; and a second connector body, the interior surface of the body including one or more internal connection features; an exterior wall surrounding one or more internal connection features, the exterior wall or at least an exterior surface of the exterior wall including one or more external alignment features; Including, When the one or more external alignment features of the first connector and the one or more external alignment features of the second connector are in an aligned orientation, the internal connection features of the first connector and the internal connection features of the second connector are oriented for connection.

[0229] When the one or more external alignment features of the first connector and the one or more external alignment features of the second connector are in an unaligned orientation, the internal connection features of the first connector and the internal connection features of the second connector are prevented from connecting.

[0230] The first connector is defined by the first and second embodiment connectors.

[0231] The second connector may be defined by the connector of any one of the third, fourth or fifth aspects.

[0232] The internal connection feature of the first connector or the second connector may be a male connection feature and may include one or more (which may be a pair) locking fingers.

[0233] The internal connection features of the first connector or the second connector may include one or more (which may be a pair) locking fingers.

[0234] The first and / or second connectors may include one or more external visual aids that are configured to provide an externally visible guide for aligning said connectors into an aligned connection therebetween, in use.

[0235] An outer surface of the outer wall of the first and / or second connector may be tapered in a direction substantially longitudinal to the connector.

[0236] As used herein, the term "comprising" means "consisting at least in part of." As used herein, when interpreting each statement containing the term "comprising," there may be features present other than those preceding the term. Related terms such as "comprise" and "comprises" are to be interpreted in the same manner.

[0237] The present invention may also be broadly described as consisting in a number of parts, elements and features referred to or shown in the specification of this application, individually or collectively, and in any or all combinations of any two or more of said parts, elements or features, and where specific integers known to be equivalents in the art to which the invention pertains are set forth herein, such known equivalents are deemed to be incorporated herein as if set forth individually.

[0238] The invention contemplates the foregoing and other configurations thereof, the following of which are given by way of example only.

[0239] Preferred embodiments of the present invention will now be described, by way of example only, and with reference to the drawings in which: [Brief description of the drawings]

[0240] [Figure 1] FIG. 2 is a perspective view of the connector from the second end (connector mating end). [Figure 1A] FIG. 2 is a perspective view of the connector from the second end (connector mating end). [Diagram 2] 2 is a perspective view of the other end of the connector of FIG. 1. FIG. [Figure 2A] 1B is a perspective view of the other end of the connector of FIG. 1A. [Figure 2B] 1A and 2A as part of an assembly that includes a conduit and another connector. [Diagram 3] FIG. 3 is a side view of the connector of FIG. 2. [Figure 4] FIG. 13 is another side view of the connector rotated 90 degrees. [Diagram 5] FIG. 2 is a diagram showing the inside of a second end of the connector of FIG. 1. [Figure 6] 2 is another view showing the inside of the second end of the connector of FIG. 1. FIG. [Figure 7] 2 is yet another view showing the inside of the second end of the connector of FIG. 1. FIG. [Figure 8] 2 is a cross-section through the center or midline of the connector of FIG. 1; [Figure 9] 9 is another cross-sectional view of the connector of FIG. 1 , axially rotated relative to FIG. 8 . [Figure 10] 10 is yet another cross-sectional view of the connector of FIG. 1 , axially rotated relative to FIGS. 8 and 9 . [Figure 11] 2 is a perspective view of a connector of an alternative embodiment to the embodiment of FIG. 1; [Figure 12] FIG. 12 is a view of a second end of the connector of FIG. [Figure 13] 12 is another view of the second end of the connector of FIG. 11. [Figure 14] 12 is yet another view of the second end of the connector of FIG. 11. [Figure 15] FIG. 17 is the same as FIG. 14 and FIG. 16, but for the connector of FIG. 1A and FIG. 2A. [Figure 16] 12 is a different view of the second end of the connector of FIG. 11. [Figure 17] FIG. 17 is the same as FIG. 14 and FIG. 16, but for the connector of FIG. 1A and FIG. 2A. [Figure 18] 12 is a cross-section through the connector of FIG. 11 showing internal features. [Figure 19] FIG. 12 is another cross-sectional view through the connector of FIG. [Figure 20] FIG. 2B is a cross-sectional view through the connector of FIGS. 1A and 2A. [Figure 21]21-23 show the sequence in which the connector of FIGS. 11, 12, 13, 14, 16 and 19 is connected or mated with another connector (which is the connector shown in FIGS. 28-29). [Figure 22] 21-23 show the sequence in which the connector of FIGS. 11, 12, 13, 14, 16 and 19 is connected or mated with another connector (which is the connector shown in FIGS. 28-29). [Diagram 23] 21-23 show the sequence in which the connector of FIGS. 11, 12, 13, 14, 16 and 19 is connected or mated with another connector (which is the connector shown in FIGS. 28-29). [Figure 24] 24 shows a perspective view of the engagement performed by the connector shown in FIGS. 21-23. [Diagram 25] 24 shows a cross section of the interconnection features of the engagement as performed by FIGS. 21-23. [Figure 26] 21-23. A known connector having a male connecting feature in the form of a pair of locking fingers is shown, such connector being capable of being brought into engagement with the connector of FIG. 1 in a manner similar to that shown by FIGS. [Figure 27] 21-23. A known connector having a male connecting feature in the form of a pair of locking fingers is shown, such connector being capable of being brought into engagement with the connector of FIG. 1 in a manner similar to that shown by FIGS. [Figure 28] FIG. 24 is a cross section through the left end connector of the connector arrangement shown in FIGS. [Figure 28A] FIG. [Figure 28B1] 28B shows a side view of the connector of FIG. 28A. [Figure 28B2] 28B shows a top view of the connector of FIG. 28A. [Figure 28C] 28A-28B2 show a lanyard connected to the connector. [Figure 28D] 28A-28B2 with an optional lanyard attached and a patient interface as a tracheostomy interface. [Figure 28E] 28A-28B2 connected to a patient interface such as a nasal cannula. [Figure 28F] 28A-28B2 with a lanyard and connected to the connector. FIG. [Figure 29] FIG. 30 is a perspective view of the outside of the connector of FIG. 28. [Figure 29A] FIG. 30 is an enlarged view of the area boxed as item "A" in FIG. 29. [Figure 29B] FIG. 29 is an enlarged view of the area boxed as item "B" in FIG. 29. [Diagram 30] 13 is a cross section of another connector embodiment further showing a swivel arrangement in combination with a cuff arrangement. [Diagram 31] FIG. 31 is a perspective view of the outside of the connector of FIG. 30. [Diagram 32] In particular, it shows a flange or lip connection with a male connecting feature of a connector such as that shown in Figures 28-29. [Figure 33A] FIG. 10 illustrates how the body of the connector with which the cuff is used may include grooves or other recesses for receiving splines or other protrusions of the cuff. [Figure 33B] The cuff to be attached to the main body is shown. [Figure 34A] FIG. 34A is another connector embodiment shown in a perspective view. [Figure 34B] FIG. 34B is a perspective view of one end of the cuff shown in FIG. 34A. [Figure 34C] FIG. 34B is a perspective view of the other end of the cuff shown in FIG. 34A. [Diagram 35] 34B is a cross-section through the center or midline of the connector of FIG. 34A showing the internal components including the swivel-type connector components. [Figure 35A] FIG. [Figure 35B] 35B is a cross-sectional view of the connector of FIG. 35A. [Diagram 36] FIG. [Figure 36A]FIG. 37 is an end view of the connector of FIG. 36. [Figure 37] 1 shows the connector in engagement with a second connector. [Figure 37A] 38 shows a cross section of FIG. 37. [Figure 38] 1 shows the connector in engagement with a second connector. [Figure 38A] 38A and 38B show cross sections thereof. [Figure 39] 1 shows the connector in engagement with a second connector. [Figure 39A] 39A and 39B show cross sections thereof. [Diagram 40] 1 shows the connector in engagement with a second connector. [Figure 40A] 41 shows a cross section of FIG. 40. [Diagram 41] 1 shows the connector in engagement with a second connector. [Figure 41A] 41 is a cross-section of FIG. [Diagram 42] 1 shows the connector in engagement with a second connector. [Figure 42A] 43 shows a cross section of FIG. 42. [Diagram 43] 1 illustrates engagement between the connector and the second connector. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0241] The provision of new and different connectors, with particular emphasis on improving ease of use as well as proper alignment of connectors to be connected together, may improve patient safety in maintaining successful delivery of gas therapy, such as delivery of humidified or other gases to a patient.

[0242] 1-20, there is provided a connector 1 for installation at the terminal end of a respiratory conduit (shown as C in the drawings). The respiratory conduit may be a medical respiratory conduit. The connector 1 includes a body 4 having a first end 5 and a second end 6. The body 4 itself defines a lumen 7 therein for the passage of gas between the first and second ends 5, 6, respectively. Depending on the flow of gas through the lumen, each of the ends 5, 6 of the connector 1 may be considered to be either upstream or downstream of the other end when placed in a breathing circuit, it being appreciated that for example the direction of gas flow will determine whether end 5 is fluidly upstream or downstream of the other end 6.

[0243] The first end 5 is engaged or engagable with, in use, the terminal end of the respiratory conduit C or at least a component associated with the terminal end of the respiratory tube.

[0244] The second end 6 of the connector 1, in use, is engaged or engageable with another connector. For example, in various preferred embodiments, the second end 6 of the connector 1 may be engaged with a suitably configured end of another connector. Other suitably configured connectors as shown herein include: - a second end 52 of the connector 200 (see for example Figures 21 to 25), - a second end 100 (as shown in Figures 26, 27) of a connector 80 providing a pair of male connecting fingers 53 in the form of a pair of locking fingers 54 (such a connector 80 is already known from PCT / NZ2012 / 000142, published as WO 2013 / 022356 to common applicant Fisher & Paykel Healthcare Limited, the contents of which are incorporated herein by reference); - the second end 52 of the connector 40 (as shown in Figures 30 and 31) As shown by:

[0245] An inner surface 8 of the body includes one or more internal connection features 9 configured to connect with another connector received therein during use.

[0246] The exterior surface 10 of the body 4 includes one or more external alignment features 11 configured to align the connector or another connection to an externally aligned connection therebetween. Optionally, or in addition, there may be one or more external visual aids, at least some of which may form an item shown as 12, configured to provide an externally visible guide for aligning the connector 1 or another connector to an externally aligned connection therebetween (e.g., recess or cutout portion 57 of the connector labeled 200, 40). Such one or more visual aids may also be configured to provide a dual function as an alignment feature. For example, the visual aid may be of sufficient bulk or tapered dimensions to transition itself from visual aid to alignment feature.

[0247] The one or more connecting features 9 are one or more surface features that extend radially inward from the inner surface 8 of the interior sidewall of the body 4 .

[0248] The one or more internal connection features 9 may be one or more tabs, which are raised protrusions extending from the inner surface 8 .

[0249] In certain embodiments, the connection features 9 may be oriented to be radially aligned with the respective external alignment features 11 and / or corresponding external visual aids 12 .

[0250] Although a pair of connecting features 9 are shown in the drawings, it should be appreciated that additional connecting features may be provided about the inner surface 8 .

[0251] To facilitate relatively simple assembly, at least one of the connection features 9 may include a longitudinally extending channel or recess 13, or the connection feature may be divided into two or more portions to allow for such a channel or recess 13 (or slot). Such a channel or recess 13 is configured to seat, hold, or position a printed circuit board (PCB) arrangement (not shown) that may be inserted into such slot. It should also be appreciated that the channel or recess 13 (or slot) may be provided at other locations around the inner surface 8.

[0252] To facilitate easy connection with the connection features 9 by another connector and to improve or correct the connection, the inner surface 8 may include one or more internal alignment features 14. Such internal alignment features are configured to align a connection feature of another connector (e.g., one or more male locking fingers that may extend into the interior space of the body 4) that is to be placed in connection therewith, for example, when the connector feature of the other connector is inserted or received inside the body 4 at the second end. In such a mode, the connection feature of the other connector is oriented (e.g., by being rotated) to provide an aligned connection orientation with the internal connection feature 9 of the connector 1. For example, the inner surface 8 has one or more internal alignment features 14 configured to rotatably orient the male connection feature of the other connector in an aligned connection orientation for connection with the connector, or at least to connect with one or more of the internal connection features 9 placed on or about the inner or internal surface 8 of the body 4, in use.

[0253] It will be appreciated that the one or more internal alignment features 9 may be one or more surface features extending in a radially inward direction from the surface, i.e., inner surface 8, of the interior sidewall of the body 4. The one or more internal alignment features may be in the form of one or more tabs, which are conveniently raised protrusions.

[0254] Each tab may be shaped to provide a pair of shoulders that are inclined from one another and from an end (e.g., an apex, or a rounded apex, or a flat or curved surface such as those illustrated by FIGS. 1A, 2A, 17, 20) at the intersection of the shoulders. Such ends of the shoulders are located substantially closer to the terminus of the second end of the connector. In this manner, such tabs may guide or urge a male connection feature in contact with the shoulders to slide down the slope of the respective shoulder, thereby being self-rotated.

[0255] In the alternative, the one or more internal alignment features 14 may be one or more ribs extending substantially longitudinally of the connector 1 and along the inner surface 8. There may be any number of ribs, for example: 1-10 ribs, or 2-8 ribs, or 4-6 ribs, or 2 ribs, or 3 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs. In particular, there may be two sets of such ribs, each set including three such ribs.

[0256] Also, there may be more than one set of internal alignment features 14 provided on or about the inner surface 8 of the body 4, but most conveniently there will be two sets of such alignment features (which may be generally circumferentially opposed).

[0257] If one set of internal alignment features 14 is provided, each set may have an equal (ie, the same) number of such internal alignment features as another set.

[0258] In a preferred embodiment, there is a pair of internal alignment features 14 which, in use, rotatably align a pair of fingers (i.e. male locking fingers) extending from another connector when inserted into or placed in engaging or surface contact with the inner surface of connector 1.

[0259] As mentioned above, the first end 5 is configured to engage with a terminal end of the respiratory conduit. Such a first end may include a sleeve-like portion 15 that is attached to the terminal end of the respiratory conduit, with which a suitable connection, such as a pneumatic connection, may be made. At least a portion of the sleeve-like portion 15 is configured to be insertable or located or housed within an inner surface of the lumen of the terminal end of the respiratory conduit (i.e., an internal connection is made), or alternatively, the sleeve-like portion may be receivable or located or housed on an outer surface of the terminal end of the respiratory conduit (i.e., an external connection is made).

[0260] Looking at the one or more external alignment features 11 and / or the one or more external visual aids 12, these may be exterior features that extend radially outward from the outer surface 10 of the exterior sidewall of the body 4. For example, these may be in the form of tabs or raised protrusions.

[0261] In one configuration, the one or more external alignment features 11 or visual aids 12 may include one or more ribs extending substantially longitudinally of the connector and along the exterior surface 10 of the body 4. For example, there may be any number of ribs, with particularly preferred being: 1-10 ribs, or 2-8 ribs, or 4-6 ribs, or 2 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs.

[0262] 1A and 2A show alternative configurations of one or more external visual aids 12 of a connector. The one or more external visual aids 12 include a raised protrusion with an end 12A (e.g., an apex, or a rounded apex, or a flat or curved surface) and a pair of shoulders 12B. The shoulders 12B are positioned to slope away from each other and away from the end at the intersection of the shoulders. The end 12A is located towards the second end 6 of the connector, and the shoulders are located closer to the first end 5 of the connector (than the second end 6), e.g., closer to the flange or lip 16.

[0263] The external visual aid(s) 12 may be substantially tongue-shaped, and / or substantially triangular, and / or substantially tapered towards an end.

[0264] 2B shows an assembly including connector 1, conduit C, and another connector 258. The another connector 258 may be, for example, a connector as described in commonly assigned U.S. Provisional Patent Application No. 62 / 252,149 and / or U.S. Patent Application No. 10 / 452,448 (U.S. Patent No. 6,953,354), both of which are incorporated herein by reference.

[0265] 15 and 17 show end views of the connectors of FIGS. 1A and 2A.

[0266] FIG. 20 shows a cross section of the connector of FIGS. 1A and 2A.

[0267] The external alignment features (and / or visual aids) may be evenly or equidistantly spaced, arrayed or positioned from one another on the circumference of the exterior surface 10 or around the periphery of a radius.

[0268] In another configuration, the external alignment feature 11 and / or visual aid 12 may be a length of protrusion extending substantially longitudinally of the connector and along the exterior surface 10, with the height of the exterior surface protrusion varying along that length. For example, the height of the external alignment feature and / or visual aid may be tapered along that length.

[0269] If tapered, the height of the projection shall be: a. lowered in a direction extending from the base of the external alignment feature toward the termination of the second end of the connector; or b. The external alignment feature may be elevated in a direction extending from the base of the external alignment feature toward the termination of the second end of the connector. The tapered portion may be tapered in any of the following ways:

[0270] FIG. 3 in particular shows a tapered arrangement conforming to a) above (ie a taper in which the projection decreases in height as it progresses towards the termination of the second end 6).

[0271] In another configuration, provided substantially at or directed towards the base of each external alignment feature is a stepped projection that may form the external alignment feature, identified in the drawings as item 11. A stepped projection is a protrusion that extends radially outwardly beyond adjacent portions of the external alignment feature.

[0272] The stepped projection may be configured to co-locate or provide for the co-location of a suitably shaped portion with which it can be keyed, such that the stepped projection can be keyed with a reciprocally shaped recess or cut-out portion of at least a portion of a sleeve-like portion of another connector when support is provided or contact is made therewith to make a connection between connector 1 and another connector.

[0273] In the alternative, provided substantially at or towards the base of each external alignment feature is a recess or cutout configured to receive a protrusion or projection of a reciprocally shaped portion of another connector. Such an arrangement allows for a reciprocal type of keying as described above. In such a situation, the recess or cutout may be configured to be co-located or co-locatable so as to be keyed with a reciprocal protrusion or projection of at least a portion of the sleeve-like portion of the other connector. Such a recess or cutout effectively performs the function of a keyhole of a key that can be brought and supported thereon.

[0274] A variety of shapes or profiles may be used for the key or keyhole. It will be appreciated that while any suitable shape may be used, particularly preferred shapes or profiles include: semicircular, triangular, rectangular or other rectilinear or geometric shapes, oval shapes, wedge shapes.

[0275] The connector 1 may further include a radially extending flange or lip 16 that projects outwardly or away from the exterior surface 10 of the body 4 .

[0276] Such a flange or lip 16 may effectively define a stop end for a point or length of maximum engagement when another connector engages with the outer surface 10 of the connector 1. The flange or lip may also provide a sealing surface with which another connector may make a substantially pneumatic connection.

[0277] The flange or lip 16 may further include one or both of: 1) one or more radially and / or longitudinally recessed or grooved regions 18a, or 2) one or more radially and / or longitudinally extending protruding regions 19a.

[0278] The flange or lip 16 may also extend longitudinally sufficiently so as to be configured to engage with a terminal end of the respiratory conduit or with a component associated with the terminal end of the respiratory conduit.

[0279] One or more external alignment features 11 of connector 1 may be shaped or configured to prevent connection of the internal connection features 9 of the connector with another connector (e.g., connector 40) when the one or more external alignment features of connector 1 and the external alignment features of the other connector (e.g., connector 40) are in an unaligned orientation.

[0280] Additionally or alternatively, one or more external alignment features 11 of connector 1 may be shaped or configured to enable connection of the internal connection features 9 of the connector with another connector (e.g., connector 40) when the one or more external alignment features 11 of connector 1 and the external alignment features of the other connector (e.g., connector 41) are in an aligned orientation.

[0281] Optionally, a sheath 17, such as an overmoulding, may surround or provide engagement (pneumatically or not) around the outer surface of the body 4. Such a sheath 17 may be provided with one or more radially and / or longitudinally recessed or grooved regions 18b, and / or one or more radially and / or longitudinally extending protruding regions 19b.

[0282] The various recessed or grooved regions 18b and / or the extending protruding regions 19b of the sheath may be aligned, either wholly or at least partially, with the recessed or grooved regions 18a and / or the extending protruding regions 19a of the flange or lip 16.

[0283] In yet another configuration, the inner surface 8 of the body 4 may provide for mounting, holding, or positioning a printed circuit board (PCB) arrangement toward the second end 6 of the connector 1. For example, the PCB may be provided on a relatively planar plate and inserted within the body 4. The PCB may be used for a variety of reasons, and in some particular configurations: it may facilitate circuitry for control, sensing (e.g., temperature, humidity, flow), heating (e.g., heater wires) or other electronic components of a breathing conduit used as part of a breathing circuit.

[0284] The connector 1 may provide a sealing surface where separate connections with separate other connectors may be made.

[0285] In a first sealing mode, the connector 1 may be configured to provide a first separate surface for sealing when a separate connection is made thereto by another connector, the first surface comprising: a sidewall surface 20 of a radially extending flange or lip 16 projecting from the outer surface 10 of the body 4 and facing substantially the surface of a termination of another connector which may be brought into bearing on the sidewall 20; or - an inner surface 8 substantially at or towards the end of the second end of the connector 1 when brought into support on a radially outwardly facing surface of another connector, such as a radially outwardly facing surface 160 (e.g. as shown in FIG. 29B ) of the other connector; It is determined by one or both of the following:

[0286] For example, when the connector 1 is configured in a first sealing mode in which a sealing surface is provided at least in part on the side wall surface 20, such first sealing mode requires precluding or avoiding the provision of radially and / or longitudinally extending grooves at least from the flange or lip 16 and also optionally from the sheath (or cuff) 17.

[0287] In a second sealing mode, the connector 1 may be configured to provide a second end body for sealing against a second sealing surface of another connector 200, the second sealing surface comprising: - an interior sidewall surface 60 provided substantially at or towards the base end 64 of the second end of the further connector 200, the body of the second end of the connector 1 being brought and supported substantially on or at a point along the interior sidewall surface at or towards the base end of the further connector 200 (see, for example, item 180 in FIG. 29B); It is defined by:

[0288] In a third sealing mode, the connector 1 may be configured to provide a second end body for sealing with a third sealing surface of another connector 200, the third sealing surface being: - the inner side wall surface 60 of the radially inwardly extending projection 60A of the second end 52 of the other connector 200 when said body of the second end of the connector 1 is brought to rest substantially on or at a point along the surface of the projection 60A of the other connector 200 (see, for example, item 140 of FIG. 29A ); It is defined by:

[0289] In a fourth sealing mode, the connector 1 is configured to provide a second end body for sealing with a fourth sealing surface of another connector 200, the fourth sealing surface being: an interior sidewall surface 60 of the second end 52 of another connector 200, the interior sidewall surface extending as a radially outward shoulder 63 from one or more male connection features (such as one or more locking fingers 54), with a portion of the body of the second end of the connector 1 being substantially brought against and supported on the radially outward surface of the shoulder (see, for example, item 170 of FIG. 29B); It is defined by:

[0290] In a fifth sealing mode, the connector 1 is configured to provide a second end body for sealing with a fifth sealing surface of another connector 200, the fifth sealing surface being: the radially outward facing surface of one or more male connection features, in particular the radially outward facing surface of one or more locking fingers located within the second end of another connector 200 (see, for example, item 160 of FIG. 29B ); It is defined by:

[0291] In a sixth sealing mode, the connector 1 is configured to provide a second end body for sealing with a sixth sealing surface of another connector 200, the sixth sealing surface being: - a shoulder side or ledge extending radially outward from one or more male connection features, in particular a radially outwardly extending surface or ledge extending radially outward from one or more locking fingers located in the second end 52 of another connector 200 (see, for example, item 150 in FIG. 29A ); or - a side or base that extends as a floor within an outer edge of a shoulder that extends radially outward from one or more male connection features of another connector 200, e.g., a side or base that extends as a floor that is located within a second end of another connector 200 (see, e.g., item 130 in FIG. 29A ). It is determined by one or both of the following:

[0292] The connector 1 as described herein has particular application to an upstream connector piece attached to the end of a respiratory conduit supplying gas to a patient interface. The connector 1 can operate with both female and male connectors, thereby improving ease of use and the ability to connect to other types of connectors, provided those other connectors provide male or female connection features.

[0293] Connector 1 may be particularly adapted as a connector for a respiratory conduit that supplies gas from a source. The "another connector" mentioned above may be, but is not limited to, a downstream patient interface end connector for a respiratory conduit that provides the supplied gas to a patient interface (such as, but not limited to, a full face mask, a nasal cannula, an oral-nose mask, a nasal mask, and each of these, whether sealing or non-sealing).

[0294] 21 to 25 show the connection made by connector 200 with connector 1. FIG.

[0295] Also disclosed is another connector (as described above) or a second connector configured to be engaged or engageable with the connector 1. The other connector may be brought into mating and / or connection with and seal with at least one of the following faces of the connector 1: At least the outer surface 10 of the body 4 . At least the sidewall of the radially extending flange or lip. For example, another connector may seal with the sidewall 20 of the radially extending flange or lip 16 that projects from the outer surface 10 of the body 4. At least the outer surface of a cuff or sleeve 17 provided at the first end of the connector 1 .

[0296] 36 and 36A disclose a connector 220 that is mated or mated in a sealing arrangement with a second connector, such as connector 1. This connector 220 may be another connector as described above.

[0297] The connector 220 may be provided at the terminal end of the respiratory conduit C. Alternatively or additionally, the connector 220 may form part of an adapter that may facilitate the connection of two connectors, i.e., connector 1 with any other connector.

[0298] The connector has a body 201 including a first end 202 and a second end 203. The first end 202 is engaged or engageable with a terminal end of the respiratory conduit C, or at least with a component associated with the terminal end of a respiratory conduit or tube (e.g., an adapter as described above). The second end 203 of the connector 220 is engaged or engageable with a second or another connector (e.g., connector 1). The connector 220 includes an internal lumen or passage for receiving a second connection therein.

[0299] The inner surface of the body 201 may include one or more internal connecting and / or alignment features 210, 211, 212. The internal connecting and / or alignment features 210, 211, 212 may facilitate sealing (pneumatically or otherwise) and / or alignment of the connector and a second connector (e.g., connector 1) at or during connection. The internal connecting and / or alignment features 210, 211, 212 may also provide a visible indication of alignment so that a user may more easily align and connect the connector 220 with the second connector. The internal connecting and / or alignment features may also provide retention of the connector 220 with the second connector when it is connected thereto.

[0300] The internal connection and / or alignment features 210, 211, 212 may include ribs or protrusions 211 that project radially inward from the body 201 of the connector 220, or from a notional or actual inner wall or inner surface of the body 201. The protrusion or protrusions or the rib or protrusions 211 may extend substantially longitudinally along a sidewall of the inner surface of the body 201 of the connector 220. The protrusion or protrusions or the rib or protrusions 211 may extend substantially from or near the second end 203 (e.g., a terminal end of the second end of the connector) in a direction toward the first end 202 of the connector 220.

[0301] The internal connection and / or alignment features 210, 211, 212 may include recesses 210, 212 that project radially outward from a notional or actual inner wall or surface. At least one recess 210, 212 may be located in a sidewall or inner surface of the body 201 of the connector. In some embodiments, at least one recess may be configured to receive one or more associated protrusions of a second connector (e.g., protrusion 11 of connector 1) when said second connector is brought into mating or connection with said connector 220.

[0302] The internal connection and / or alignment features 210, 211, 212 may, at least in part, provide a sealing or sealing surface between the connector and another connector. For example, the internal connection and / or alignment features 210, 211, 212 may, by themselves or in combination with an inner surface of the body of the connector, seal with a second connector (e.g., connector 1).

[0303] The interconnection and / or alignment features 210, 211, 212 may be shaped to match corresponding features of the second connector. The rib 211 of the connector may be configured to match a corresponding recess (e.g., longitudinal recess or grooved region 18b of connector 1 of cuff or sleeve 17) of the second connector (e.g., connector 1). The recesses 210, 212 may be configured to match a corresponding rib or protrusion (e.g., visible alignment feature 12 or protrusion 16) of the second connector.

[0304] The internal connection and / or alignment features 210, 211, 212 may be co-located or co-locatable to key into a reciprocally shaped protrusion or recess on a portion of the second connector. This may be one mechanism that provides an alignment function between the connector 220 and the second connector. The internal connection and / or alignment features 210, 211, 212 may be shaped to facilitate proper orientation for mating, so that when the connector 220 is brought into contact with the second connector, the connectors are aligned to ensure that the internal connection and / or alignment features 210, 211, 212 fit snugly with corresponding ribs or protrusions and / or recesses on the second connector. The keying may also prevent rotation of the components relative to one another when in a mated state.

[0305] The internal connecting and / or alignment features 210, 211, 212 may be disposed circumferentially on the inner surface of the connector. The internal connecting and / or alignment features 210, 211, 212 (e.g., ribs and / or protrusions) may be equidistantly spaced circumferentially on the inner surface of the body 201 of the connector 220. Alternatively, the internal connecting and / or alignment features 210, 211, 212 may be disposed such that they are not equidistant (i.e., asymmetrical with respect to a plane), which may only allow connection between the connector 220 and a second connector in a particular orientation.

[0306] There may be one or more or multiple interconnection and / or alignment features 210, 211, 212 (ribs and / or recesses), and there may be 2, or 3, or 4, or 5, or 6 ribs and / or recesses. In the embodiment as shown in Figure 36, there are 4 ribs 211.

[0307] There may be a pair of recesses 210, 212. The pair of recesses 210, 212 are located such that they are equidistantly spaced apart around the circumference of the inner surface of the body 201 of the connector 220. Alternatively, the recesses 210, 212 may be arranged such that they are not equidistant (i.e., asymmetric about the plane). The recesses 210, 212 may be arranged to overlap, such that one is at least partially nested within the other, or one is at least partially defined by the other.

[0308] The inner surface of the body 201 of the connector 220 may include at least one sealing surface or surface for sealing. The sealing surfaces as described herein are labeled as first, second and third sealing surfaces for convenience and clarity. However, it should be recognized that a connector may include, for example, a third, or second sealing surface without necessarily including a first sealing surface. For clarity, the inclusion of a particular numbered sealing surface does not require the inclusion of one or more lower numbered sealing surfaces.

[0309] The connector 220 may provide at least a first inner surface for sealing with an outer portion of the second connector when a connection or mating is made by or with the second connector. The first inner surface is provided on a circumferential portion of the inner surface of the body 201. The circumferential portion may be located at or near the second end 203 of the body 201 of the connector 220. The first sealing surface may be provided substantially continuously around and substantially circumferentially locatable on the outer portion of the second connector (e.g., the cuff or sleeve 17 of the connector 1).

[0310] 37-40A show an example of a connector 220 that seals with a second connector (which is connector 1) by means of at least a first internal sealing surface.

[0311] The internal connection and / or alignment features 210, 211, 212 may form at least a portion of the first inner surface of the body. One or more recesses and / or one or more ribs or one or more protrusions may form at least a portion of the first inner surface. The one or more protrusions or one or more ribs 211 may extend substantially longitudinally along the inner surface of the body 201 of the connector 220. The one or more protrusions or one or more ribs 211 may extend substantially from or near the second end 203 (e.g., the terminal end of the second end of the connector) in a direction toward the first end 202 of the connector 220. It should be appreciated that the ribs and / or protrusions 211 of the connector 1 may extend only partially into or along the channel 18b.

[0312] The first inner surface of the body 201 of the connector 220 may be substantially curved when viewed in cross section (as shown in cross sections in FIGS. 37A, 38A, 39A, and 40A). Additionally or alternatively, the profile of the first inner surface (e.g., the radius of curvature and point of curve of the first inner surface) may match the exterior profile (e.g., the exterior curve or curvature) of the cuff or sleeve 17 of the second connector. The profile of the first inner surface may enable sealing between the first inner surface and the cuff or sleeve 17 of the second connector. FIGS. 37-40A show where the first inner surface is profiled to match the profile of the cuff or sleeve 17 of the second connector (e.g., connector 1).

[0313] 37-40A show a series of embodiments of a connector 220 in which a rib or protrusion 211 extends into a recess or longitudinal channel 18b in the sleeve 17. FIG.

[0314] 37 shows a connector 220 with the first inner surface and ribs or protrusions 211 extending to or substantially near the end of the cuff or sleeve 17 of the connector 1. FIG. 37A shows a cross section of the connector 220 after a connection has been made with a second connector, which is the connector 1. It is also envisioned that the first inner surface may extend beyond the end of the cuff or sleeve 17 of the connector 1.

[0315] Figure 38 shows a connector 220 in which the first inner surface and ribs or protrusions 211 extend to a position between the outermost apex of the outer profile of cuff or sleeve 17 of second connector 1 and the end of cuff or sleeve 17 closest to the termination of the second connector (which is connected to conduit C). Figure 38A shows a cross section of connector 220 after connection with the second connector (which is connector 1) has been completed.

[0316] 37-38A, connector 220 may be made from a soft rubberized material so that the second end of the connector may extend over the apex of sleeve 17. The embodiment of Figures 39-42A may also be made from a soft rubberized material.

[0317] In embodiments where the connector does not extend beyond the maximum diameter of the cuff (eg, FIGS. 39-42A), the connector may be made of a rigid material.

[0318] FIG. 39 shows a connector 220 in which the first inner surface and ribs or protrusions 211 are of sufficient dimension such that, in use, they extend substantially to the outermost apex of the external profile defined by the sleeve 17 of the connector 1.

[0319] Figure 40 shows a connector 220 in which the first inner surface and ribs or protrusions 211 extend to a position between the outermost apex of the outer profile of the cuff or sleeve 17 of the second connector 1 and the end of the cuff or sleeve 17 closest to the end of the second connector 1 that is not connected to the conduit C. Figure 40A shows a cross section of connector 220 after connection with the second connector, connector 1, is completed.

[0320] The connector 220 may provide a second inner surface for sealing when connected or mated by or with said other connector. The second surface is defined by a substantially radially extending flange or lip 204 (e.g., as shown in Figs. 36 and 36A). The flange or lip 204 projects radially inwardly from the inner surface of the body as a sidewall surface. The flange or lip 204 may provide a surface against which a respective surface of the second connector (e.g., flange or lip 12, or termination) seals.

[0321] The radially extending flange or lip 204 may include at least one of said internal connecting or aligning features. The at least one connecting or aligning feature may be a rib or protrusion, or a recess. The at least one recess may be located in the flange or lip 204 or may be a dimple or other surface relief feature in the face of the flange or lip 204. The dimple or other surface relief feature may be a cut-out in the face.

[0322] One or more of the internal connection and / or alignment features may be co-located or co-locatable with a reciprocally shaped protrusion or recess in a portion of the second connector such that they are keyed together. In an embodiment such as that shown in FIGS. 37-41A, the connector 220 may include a rib 211 that is co-locatable with the recess 18a of the connector 1. The connector 220 may also include at least one recess 210 located in the flange or lip 204, the at least one recess 210 being co-locatable with a rib or protrusion 11 of the second connector (which is the connector 1).

[0323] The recess may be configured to receive or be receptive of an associated protrusion or other geometric feature of a second connector when the second connector is brought into mating or connection with said second inner surface, wherein at least one protrusion is located on a sidewall or inner surface of the connector, and at least one protrusion is received in a recess of said other connector.

[0324] The surface of the flange or lip 204 may be configured to provide a substantially planar surface against which a portion or surface of a second connector may mate or engage. The surface may be oriented to substantially face toward the second end 203 of the connector 220. The surface may mate or seal with a sidewall, or ledge, or lip, or base, or end of the second connector. When the second connector is connector 1, the surface may seal with a corresponding surface of a flange or lip 16 of connector 1.

[0325] The connector may also provide at least a third inner surface for sealing an outer portion of a second connector when connection or mating with the outer portion of the second connector is made by or with the second connector, the third inner surface being provided by a circumferential portion of the inner surface of the body, optionally by said circumferential portion located at or near the first end of the body of the connector, and provided such that the third inner surface is substantially continuously around and substantially circumferentially mountable to the outer portion of said another connector with which it is brought into a connecting or mating arrangement.

[0326] The connector 220 may provide at least a third inner surface for sealing with an outer portion of the second connector when a connection or mating is made by or with the second connector. The third inner surface is provided by a circumferential portion of the inner surface of the body 201. The circumferential portion may be located at or near the first end 202 of the body 201 of the connector 220. Alternatively, in other embodiments (such as those shown in Figures 41-42A), the third inner surface is located near the second end 203 of the body 201. The first sealing surface may be provided substantially continuously around and substantially circumferentially locatable on the outer portion of the second connector (e.g., the outer surface 10 of the body 4 of the connector 1).

[0327] The alignment or connection feature may form at least a portion of the third inner surface of the body. For example, as shown in Figures 41-42A, recesses 212 form a portion of the third inner surface for sealing. At least one recess may be shaped to receive a protrusion of the second connector, such as visual indicator 12.

[0328] The recess may be configured to receive and seal at least a portion of the protrusion of the second connector such that the remaining inner surface of the body of the connector 220 may seal with at least a portion of the outer surface 10 of the body 4 of the second connector 1.

[0329] The recess may include a pair of shoulders that are inclined from each other at the intersection of the shoulders and from an end (e.g., an apex). The end of the recess is located substantially toward the first end of the connector 220 than the shoulder. At least one recess may be substantially tongue-shaped and / or substantially triangular and / or substantially tapered toward the end. The recess may extend only partially into the body of the connector 220 (as shown in FIG. 42). As such, when the connector 220 is connected to the second connector 1, the body 201 of the connector 220 may extend only partially onto the second connector 1.

[0330] Alternatively or additionally, the recesses may be longitudinal channels (eg, to accommodate ribs 12 of FIG. 1).

[0331] 42-42A show connector 220 that seals with a second connector (which is connector 1) at least in part by a third sealing surface. In the embodiment of FIGS. 42-42A, connector 220 seals with a portion of outer surface 10 of body 4 of second connector 1, including a portion of rib or protrusion 12.

[0332] 43 shows the connection of connector 220 with a second connector (e.g., connector 1). The second connector 1 is inserted into connector 220 such that one or more external alignment features 11 or visual aids 12 may mate and seal with corresponding internal connection / alignment features 210, 212. As the connectors are mated together, recessed or grooved regions 18B mate (and may seal) with ribs 211.

[0333] As mentioned above, it should be appreciated that the connector may include any combination of the first, second and third sealing surfaces.

[0334] It should also be appreciated that the second connector may be a single piece as shown in Figures 37-41, or may be made from multiple pieces as shown in Figures 42 and 42A (and with reference to connector 1 as described above).

[0335] Notwithstanding the above description, additional connectors 200 and 40 may be provided that are operatively compatible with connector 1. The following description is provided primarily with reference to connectors 200 and 40 as shown in Figures 21-25 and 28-35B.

[0336] Thus, a connector 200, 40 is provided for use with a conduit for supplying gas to a user.

[0337] The connector 200, 40 is provided at the end of the respiratory conduit. The connector 200, 40 includes a body 50 including a first end 51 and a second end 52, the body 50 defining a lumen 53 therein for passing gas between the first and second ends, respectively. The first end 51 is engaged or engageable with the end of the respiratory conduit, or at least with a component associated with the end of the respiratory conduit, in use. The connector 200 may be connected to the end of the respiratory conduit by a swivel connector connected to the body of the connector. The second end 52 is engaged or engageable with another connector, such as the connector of item 1 previously described herein, in use. The inner surface of the body includes one or more internal male connection features 53 extending therethrough and configured to connect with a female end or portion of another connector that is capable of receiving said male connection features 53. The male internal connection features 53 include one or more (possibly a pair of) locking fingers 54. Connectors 200, 40: a. Surrounding the one or more internal male connecting features 53 is an outer wall 55, the outer surface 56 of the outer wall being tapered, tapering in a substantially longitudinal direction of the connector (see, e.g., FIG. 30 to illustrate the tapered arrangement); b. Surrounding the one or more internal male connection features 53 is an exterior wall 55, the exterior surface or at least the exterior surface 56 of which includes one or both of: one or more external alignment features 57 configured to align the connector 40 or another connector into an externally aligned, connected state; and / or one or more external visual aids configured to provide an externally visible guide for aligning the connector or another connector into an aligned, connected state, in use (see, e.g., Figures 28-29 for illustrating such an arrangement).

[0338] In some embodiments, the first end of the connector 51 includes an outwardly flared sleeve portion. The outwardly flared portion allows the connected respiratory conduit to move relative to the connector 40 so that the respiratory conduit can flex and bend without being damaged from the connector. Additionally, the outwardly flared sleeve portion also allows a user to better grip the connector for easier connection and disconnection to other connectors.

[0339] The connector may include at least one fastening feature 231. Figure 28A shows an embodiment of a connector 200 in which the fastening portion 231 is formed by a recessed area 232 and a bridging portion 234. The bridging portion 234 allows for the connection of a lanyard (or a portion of a lanyard) to be fastened to the connector 200. Other structural features for attaching a lanyard to the connector 200 (forming the fastening feature 231) are envisioned, such as an integral loop or clip.

[0340] FIG 28B1 shows a side view of the connector 200 of FIG 28A. The connector 200 may include a pair of fastening features 231 (only a single fastening feature 231 is shown in the side view of the connector 200, with the second fastening feature 231 hidden from view), which may be located, for example, equidistantly around the circumference of the connector 200. FIG 28B2 shows a top view of the connector 200 of FIG 28A, including a pair of fastening systems 231. The pair of fastening systems 231 are located opposite each other, such that the fastening systems 231 are located on opposite sides of the connector 200. A lanyard 240 may be connected to one or both of these fastening systems 231.

[0341] 28C shows the lanyard 240 fastened or engaged with the securing feature 231 of the connector 200. The lanyard 240 may include a loop portion 241 that is fastened around the bridge portion 234 and then pulled on itself to securely associate the lanyard 240 with the connector 200. The lanyard 240 may then be placed around the neck of a user, or a feature of the environment, and may take on or support at least some of the weight of the connector 200, the attached conduit, and / or the interface.

[0342] 28D shows the connector 200 with an attached lanyard 240 (optional) and a patient interface as a tracheotomy interface 250 via conduit C. The tracheotomy interface is connected to a tracheotomy guard 253. The tracheotomy guard 253 may be, for example, as described in commonly assigned U.S. Provisional Patent Application No. 62 / 329,638 to Fisher & Paykel Healthcare Limited, the contents of which are incorporated herein by reference.

[0343] 28E shows the connector 200 without the lanyard and connected to a patient interface, such as a nasal cannula 251, via a conduit C. An optional tube clip TC may be used and provided along the conduit C. The tube clip TC may include features that allow it to be attached to an item in the environment, thereby helping to support the conduit C, interface 251, or other portions of the breathing circuit. In this manner, the weight of the portion of the breathing circuit closer to the patient or user may be supported.

[0344] FIG. 28F shows connector 200 equipped with lanyard 240 and connected via conduit C to connector 252.

[0345] Accordingly, and for example with reference to Figures 30-31, there is also provided a connector 40 for use with a conduit for supplying gas to a user. The connector includes a body 50, the body 50 including a first end 51 and a second end 52. The body 50 defines a lumen therein for the passage of gas between each of the first and second ends. The first end 51, in use, is engaged or engageable with a terminal end of a respiratory conduit (such as a tube leading to a patient interface), or at least with a component associated with the terminal end of a respiratory tube. The second end 52, in use, is engaged or engageable with another connector. The outer surface of the body 50 includes a cuff 65 disposed at least substantially around the first end 51 of the connector body 50 (and may partially overlap at least a portion of the second end 52 of the connector body 50), said cuff 65 extending substantially longitudinally downwardly over at least a portion of the length of the respiratory tube that is engaged or engageable with the first end 51, and said cuff is a stretchable or elastic type material, such as a silicone or thermoplastic elastomer (TPE) type material.

[0346] The diameter of the outer wall 55 of the second end 52 is smallest (i.e., the outer diameter) at the terminal end 58 of the second end 52, and the diameter (outer diameter) increases in the direction extending from the terminal end 58 of the second end 52 toward the first end 51.

[0347] The one or more locking fingers 54 may be substantially housed within the second end 52 of the connector 200,40.

[0348] A space 59 is defined between an outer surface of the one or more internal male connection features 53 (or locking fingers 54) and an inner surface 60 of the outer wall.

[0349] The outer wall 55 is configured to provide one or more alignment features 57 and / or one or more external visual aids that assist in aligning the outer wall with a reciprocally shaped feature on another connector. The external visual aids may include graphics or other visible indicators for a user to properly align and position the alignment feature on the outer wall with a reciprocal feature of another connector that is brought into support on the one or more alignment features 57.

[0350] In some configurations, one or more internal male connection features 53 are oriented to be radially aligned with external alignment features 57 and / or external visual aids, each of which in combination provide a visual indicator, as well as a physical aid, to ensure proper alignment of one connector with another.

[0351] As shown in the various figures, for example and with reference to Figures 24-25 and 30-31, the one or more external alignment features 57 may be one or more cut-outs in a termination 58 or termination surface of an outer wall 55 of the second end 52. The cut-outs may be configured to be received by a substantially reciprocally shaped portion on a connector that the outer wall is to be placed in contact with.

[0352] The various external alignment features 57 may be evenly or equidistantly spaced, arrayed or positioned circumferentially about the face of the termination of the outer wall of the second end portion.

[0353] The external alignment feature 57 is configured to be co-located or co-locatable with a reciprocally shaped protrusion on the sleeve-like portion of another connector during connection of the terminal surface 58 of the second end 52 of the connectors 200, 40 with the other connector when the terminal surface 58 is brought into a condition supporting a connection between the two connectors.

[0354] One or more external alignment features 57 of connector 40 may be shaped or configured to prevent connection of the connector's internal connection features 53 with another connector (e.g., connector 1) when one or more external alignment features of connector 40 and the external alignment features of the other connector (e.g., connector 1) are in an unaligned orientation.

[0355] Additionally or alternatively, one or more external alignment features 57 of connector 40 may be shaped or configured to enable connection of the internal connection features 53 of the connector with another connector (e.g., connector 1) when the one or more external alignment features 57 of connector 40 and the external alignment features of the other connector (e.g., connector 1) are in an aligned orientation.

[0356] Locking fingers 54 may include a recess 61 in an outer surface of each finger 54. Such recess 61 is provided to receive or engage an internal connection feature, e.g., a raised protrusion or a tab such as locking tab 14, of a connector such as the one shown as item 1. Recess 61 may be shaped to receive an internal connection feature (e.g., item 14) of another connector (e.g., the connector shown herein as item 1).

[0357] The tip 62 of the locking finger may be of at least a partially chamfered configuration, preferentially to assist the locking finger 54 in being able to engage and be received by a connecting feature such as that itemized as 14.

[0358] As cutouts, alignment features 57 may be provided in various shapes, for example: semicircular, triangular, rectangular or other rectilinear or geometric shapes, oval shapes, wedge shapes.

[0359] In various configurations, the outer wall 55 acts as a sleeve to effect a sleeve connection with another connector (whether male or female connection). In one embodiment, the outer wall is configured for use as a 22mm male taper connector to another connector that includes female connection features, and in another embodiment, the outer wall is a sleeve configured for use as a 22mm female taper connector to another connector that includes male connection features.

[0360] The connectors, or at least their bodies, may be made of any medically suitable material, but are particularly preferably made of polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS) or polypropylene (PP).

[0361] The inner surface of the second end 52 of the body may further include a projection for engagement (e.g., an interference fit) with a correspondingly shaped portion of another connector received by or within the inner surface bounded by the outer wall 55. For example, such projection may extend radially outward from one or more locking fingers 54 as a shoulder 63, or from a base 64 extending as a floor from the inner surface of the outer wall 55. The shoulder may also extend longitudinally in a direction toward the open end of the second end of the connector. Or, alternatively or in addition, the inner surface of the outer wall may define a radially inwardly extending projection 60a. A space 59 is defined between the radially outward surface of the shoulder 63 and the inner surface of the outer wall or the inwardly extending projection 60a, such space being sized and shaped to be capable of receiving a terminal portion of another connector, such as a lip or flange portion of another connector. The termination of another connector may be received in the space as an interference fit between the outwardly facing face of the shoulder and the inner surface of the outer wall or projection 60a. For example, referring to FIG. 32, there is shown the assembly, in the space 59, of a connector, such as that itemized as connector 200, and a lip or flange (or shoulder) 91 of another connector 90 that may provide such an interference fit. In this manner, the lip or flange 91 may be held or held in place by the interference fit and may also provide a suitable pneumatic seal between these parts.

[0362] Alternatively or additionally, substantially adjacent or at least partially abutting shoulder 63 and the inner surface of the outer wall is a base 64, which extends as a floor between the outer edge of the shoulder and the inner surface of the wall. Base 64 may define a sealing surface against which a termination or face of a termination of another connector may be engaged to form a pneumatic connection.

[0363] Connector 200 is configured to provide multiple distinct sealing surfaces where a seal may be formed, whether that be between components along the entirety of a surface or at a point or specific location along that surface. As such, connector 200 provides six distinct and different sealing surface options, each of which is described below.

[0364] In a first sealing mode, connector 200 may be configured to provide a first separate surface for sealing when a separate connection is made by another connector (such as connector 1), the first surface being: - a terminating surface 58 of the second end 52 of the connector 200 when brought into bearing on a flange or lip 16 (or shoulder) that projects outwardly or away from the outer surface of the body of another connector 1 (see, for example, FIG. 23 for such a sealed surface); It is defined by:

[0365] In a second sealing mode, connector 200 may be configured to provide a second separate surface for sealing when a separate connection is made by another connector (such as connector 90), the second surface being: an interior sidewall surface 60 provided substantially at or oriented towards the base end 64 of the second end of the connector 200, with a portion of the further connector 90 (such as a lip or flange 91, which may include a shoulder) being brought and supported substantially on or at a location at or oriented towards the base end along the interior sidewall surface (see, for example, item 180 in FIG. 29B ); It is defined by:

[0366] In a third sealing mode, connector 200 may be configured to provide a third separate surface for sealing when a separate connection is made by another connector (such as connector 90), the third surface being: an inner sidewall surface 60 of a radially inwardly extending protrusion 60A of the inner sidewall surface 60 of the second end 52, where a portion of the further connector 90 (such as a lip or flange 91, which may include a shoulder) is substantially brought to rest on or at a point along the surface of the protrusion 60A (see, for example, item 140 of FIG. 29A ); It is defined by:

[0367] In a fourth sealing mode, the connector 200 may be configured to provide a fourth separate surface for sealing when a separate connection is made by another connector (such as 90), the fourth surface being: an interior sidewall surface 60 of the second end 52 of the connector 200, the interior sidewall surface extending radially outward from the one or more male connection features (such as one or more locking fingers 54) as a shoulder 63, and a portion of the other connector 90 (such as a lip or flange 91, which may include a shoulder) being brought into and supported substantially on the radially outward surface of the shoulder (see, for example, item 170 of FIG. 29B ); It is defined by:

[0368] In a fifth sealing mode, connector 200 is configured to provide a fifth separate surface for sealing when a separate connection is made by another connector (such as 90), the fifth surface being: - the radially outward facing surface of one or more male connection features, in particular the radially outward facing surface of one or more locking fingers located within the second end 52 of the connector 200 (see, for example, item 160 of FIG. 29B ); It is defined by:

[0369] In a sixth sealing mode, connector 200 is configured to provide a sixth separate surface for sealing when a separate connection is made by another connector (such as 90), the sixth surface being: - a shoulder side or ledge extending radially outward from one or more male connection features, in particular a radially outwardly extending surface or ledge extending radially outward from one or more locking fingers located within the second end 52 of the connector 200 (see, for example, item 150 in FIG. 29A); or - a side or base extending as a floor between the outer edge of a shoulder extending radially outward from one or more male connection features and the inner surface of the wall (see, for example, item 130 in FIG. 29A ); It is defined by one or both of the following:

[0370] In yet another configuration, a cuff 65 may be provided about the first end 51 of the connector body 50 and may at least partially overlap a portion of the second end 52 of the connector body. Such a cuff 65 may generally be an overmolded material overmolded about the connector body 50, or the cuff may be a preformed component that is assembled in place. Alternatively, the cuff may be preformed and then slid over or placed in place on the connector body.

[0371] The cuff 65 may be dimensioned to provide a relatively smooth or continuous outer surface contour, with the outer surface of the outer wall substantially abutting or substantially adjacent the intersection 66 with the cuff.

[0372] The cuff may include an indicator of the connector in which it (i.e., the cuff) is in place, or may provide indicia of a particular component or size of a component associated with the connector (optionally, for example, if the component is a patient interface, such as a nasal cannula or mask or other such interface). Such indicators may be by color.

[0373] The cuff 65 may be dimensioned to transition from a substantially circular exterior profile when substantially abutting or substantially adjacent to the outer surface of the connector's outer wall to a substantially square exterior profile disposed substantially (even entirely) around the first end of the connector body. In this manner, a user may apply more torque or force to disengage such a connector 40 from a connected engagement with another connector.

[0374] For example, as shown with particular reference to Figures 34A-C, cuff 65 transitions from a substantially circular profile (indicated by item 120) in region 121 where cuff 65 meets or is substantially adjacent to the body of connector 40, to a substantially more square or rectilinear shape in region 122.

[0375] 30 and 35 further show a swivel-type connector part 67 having threads 123 for threadably engaging the terminal end of a conduit to provide engagement therewith and therefore fluid communication with the lumen of the connector 40.

[0376] The cuff 65 may extend substantially from the second end 52 of the connector body 50 to overlap the outer surface of the respiratory tube or conduit to which the connector is, in use, engaged or engageable, or the cuff extends to overlap at least a portion of the component associated with the terminal end of the respiratory tube.

[0377] The outer surface of the cuff may be textured or otherwise surface treated to increase friction or grip so that a user can apply force or torque to the cuff (and thus the connector).

[0378] The cuff may include one or more splines 124 or other inwardly projecting portions on its inner surface to engage or fit into a suitably shaped recess or groove 70 on the outer surface of the body 50 to which the cuff is connected. For example, referring to FIG. 33A, in which the cuff is partially seen through, grooves 70 are provided on the outer surface of the body 50 of the connector 40. In this manner, the cuff 65 is not only more precisely positioned on the body, but also reduces the likelihood of the cuff inadvertently rotating around the body when a user applies torque (e.g., when a user attempts to disconnect such connector 40 from a connection with another connector, such as connector 1). FIGS. 33B and 34C show the arrangement of the cuff 65 as is, and the splines 124 or other projections are more prominent.

[0379] It should be appreciated that the cuff 65 may be an elastic or stretchable type of material, such as silicone or a thermoplastic elastomer (TPE).

[0380] In various configurations, the cuff 65 may at least in part facilitate relieving tension that would otherwise be imparted to the engagement or connection made between the respiratory conduit and the first end or a component associated with first end 51.

[0381] A further component that may be associated with the connectors 200, 40 (e.g., swivel connector part 67 as shown in FIG. 29) is a swivel arrangement whose purpose is to provide a swivel (or axially rotatable) type connection between the connectors 200, 40 and the connector body 50 and to the terminal end of the conduit.

[0382] As such, the swivel connector part 67, in use, connects with at least a portion of the connector body 50. The swivel connector 67 may be configured to connect with a terminal end of a conduit, and the swivel connector is configured to connect with the connector first end 51.

[0383] The swivel connector component 67 can connect or engage with a terminal end of a conduit via a threaded or screw-type engagement.

[0384] The swivel connector part 67 is connectable to the body of the connector such that relative movement between the connector body and the swivel connector is prevented axially but permitted rotationally.

[0385] In various embodiments, the swivel connector part 67 may include one or more surfaces 68 that form a rotatable seal with an inner surface 69 of the connector body. For example, the inner surface 69 of the connector 40 may include a pair of wall portions 125 that serve to bound the surfaces 68 inwardly, permitting axially-located orientation of the swivel connector part 67 with the connector body, and permitting radial rotation of the one or more surfaces 68. In this manner, a swivel connection is made with the connector body.

[0386] 35A and 35B show a connector 40 in which the body of the connector 40 includes a mounting arm 129 for mounting a swivel connector part 67 to the connector 40. The mounting arm 129 may include at least one wall portion or mounting barb or retaining projection 125 that may engage a corresponding lip or flange or at least a portion of the body of the swivel connector part 67 to axially retain the swivel connector part 67 while allowing rotation of the swivel connector part 67 relative to the connector body. The retaining projection 125 may include a sloped surface in a direction away from the first end 51 of the connector. The sloped surface may allow insertion of the swivel connector part 67. The projection 125 may also include a substantially flat surface configured to prevent relative axial movement of the swivel connector part 67, optionally in a direction perpendicular to the body of the connector.

[0387] The mounting arm 129 may be supported on one side from a portion of the body to bend or flex relative to the body. The supported on one side configuration of the mounting arm 129 may allow easier insertion of the swivel connector part 67 because the mounting arm 129 may flex outward to accommodate insertion of the swivel connector part 67.

[0388] The mounting arm 129 may be surrounded by a cutout region 128 that allows the mounting arm to flex relative to the connector body. The cutout region 128 may be disposed about the mounting arm 129 to facilitate flexibility in at least a radially outward direction from the connector 40.

[0389] The mounting arm 129 may include a recess configured to receive a portion of the swivel connector component 67 (e.g., surface 68).

[0390] The above description of the invention includes preferred forms thereof. Modifications may be made thereto without departing from the scope of the invention.

Claims

1. 1. A connector for a breathing circuit configured to be engaged or engageable with a second connector, the connector comprising: a body including a first end and a second end, an inner surface of the body including one or more connection and / or alignment features for connection with the second connector; A connector, wherein the one or more connection and / or alignment features comprise at least one recess protruding radially outward from a notional or actual inner wall or interior surface of the body.

2. 10. The connector of claim 1, wherein the connector provides a further surface for sealing when connected or mated by or with the second connector, the further surface being defined by a substantially radially extending flange or lip configured to abut an end wall of the second connector.

3. The connector of claim 1 or 2, wherein the alignment feature is configured to align the connector with the second connector.

4. The connector of any one of claims 1 to 3, wherein the connection feature is configured to facilitate a connection between the connector and the second connector.

5. The connector of any one of claims 1 to 4, wherein the connection and / or alignment features at least in part provide a sealing or sealing surface between the connector and the second connector.

6. The connector of any one of claims 1 to 5, wherein at least one recess of the connector is configured to fit a corresponding rib or protrusion of the second connector.

7. 7. The connector of claim 1, wherein the one or more internal connection and / or alignment features are co-located or co-locatable for keying with a reciprocally shaped protrusion or recess in a portion of the second connector.

8. The connector of claim 7 , wherein the keyed coupling prevents rotation of the connector relative to the second connector when in a mated condition.

9. 9. A connector as claimed in any one of claims 1 to 8, wherein the at least one recess is arranged circumferentially on the inner surface of the connector, optionally the recesses being equidistantly spaced apart circumferentially on the inner surface of the connector.

10. The connector of any one of claims 1 to 9, further comprising a plurality of said recesses, optionally the connector further comprising 2, or 3, or 4, or 5, or 6 recesses.

11. The connector of any one of claims 1 to 10, wherein at least one recess is located on a side wall or an inner surface of the body of the connector, and the at least one recess is configured to accommodate one or more associated protrusions of the second connector when the second connector is brought into mating or connection with the connector.

12. the connector is configured to seal with an outer portion of the second connector at at least a first inner surface when connected or mated by or with the second connector, the first inner surface being provided by a circumferential portion of the inner surface of the body; Optionally, the circumferential portion is disposed at or near the second end of the body of the connector such that the first inner surface is substantially continuously around and substantially circumferentially positionable about an outer portion of the second connector with which it is in a connecting or mating arrangement; Optionally, the alignment or connection feature forms at least a portion of the first inner surface of the body; A connector as claimed in any preceding claim, optionally comprising a pair of said alignment or connection features forming at least a portion of said first inner surface of said body.

13. the first inner surface is substantially curved when viewed in transverse cross-section; and / or The connector of claim 12 , wherein the profile of the first inner surface matches an exterior profile of a cuff of the second connector.

14. the connector is configured to seal with a second inner surface when connected or mated by or with the second connector, the second surface being defined by a substantially radially extending flange or lip providing a surface; Optionally, said surfaces are of sufficient size to seal with respective surfaces of said second connector; and / or the surface is configured to provide a substantially planar surface into which a portion or surface of the second connector can mate or engage; and / or the face is oriented to substantially face towards the second end of the connector; and / or A connector according to any preceding claim, wherein the surface is configured to mate or seal with a side wall, or a ledge, or a lip, or a base, or an end of a second connector.

15. The connector of claim 14 , wherein the radially extending flange or lip comprises at least one of the connection or alignment features.

16. 16. The connector of claim 14 or 15, wherein the surface comprises one or more connecting and / or alignment features that are co-located or co-locatable for keying with a reciprocally shaped protrusion or recess in a portion of the second connector.

17. At least one recess may be provided on a sidewall or an inner surface of the connector, the at least one recess receiving a protrusion of the second connector; Optionally, the connector comprises a pair of recesses located on a side wall or an inner surface of the connector.

18. The connector of claim 17 , wherein the recess is a dimple or other surface relief feature in the face.

19. 19. A connector as described in claim 17 or 18, wherein the recess is configured to accommodate or be capable of receiving an associated protrusion or other geometric feature of the second connector when the second connector is brought into mating or connection with the second inner surface.

20. The connector of any one of claims 14 to 19, wherein at least one protrusion is located on a side wall or an inner surface of the connector, and the at least one protrusion receives a recess of the second connector.

21. the connector is configured to seal with an outer portion of the second connector with at least a third inner surface when connected or mated by or with the second connector, the third inner surface being provided by a circumferential portion of the inner surface of the body; Optionally, the circumferential portion is located at or near the first end of the body or at or near the second end of the body of the connector, and the third inner surface is provided such that it is substantially continuously and substantially circumferentially positionable around an outer portion of the second connector with which it is in a connecting or mating arrangement; Optionally, the alignment or connection feature forms at least a portion of the third inner surface of the body; and / or The connector of any preceding claim, wherein at least one recess forms at least a portion of the third inner surface.

22. the recess comprises a pair of shoulders that are angled from each other and from an end at a junction of the shoulders, the end of the recess being located substantially closer to the first end of the connector than the shoulders; and / or the at least one recess is substantially tongue-shaped, and / or substantially triangular, and / or substantially tapered towards an end, and / or A connector according to any preceding claim, wherein the recess is a longitudinal channel.

23. A connector according to any preceding claim, wherein the connector is made from a soft, rubberized material.

24. A connector according to any preceding claim, comprising an upstream connector part attached or attachable to a terminal end of a respiratory conduit supplying gas to a patient interface.

25. The connector according to any one of claims 1 to 24, wherein the connector is capable of operating as both a female connector and a male connector.

26. An adapter configured to facilitate a connection between two connectors, the connector according to any one of claims 1 to 25 being provided as part of the adapter.

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