Catheter Connectors

Abstract

The present invention relates to a connector that is configured to be in direct fluid communication or engagement with a terminal end of a breathing catheter or to be in fluid communication or engagement with a terminal end of the breathing catheter via a component associated with the terminal end of the breathing catheter. In at least one embodiment, the connector includes a body having a first end and a second end and an inner cavity for allowing gas to pass between the ends. The first end is engageable with the terminal end of the catheter or a component associated with the terminal. The second end is engageable with another connector. At the second end, the inner surface of the body includes an internal connection feature, which is used to connect to another connector to be received inside it. The outer surface of the body includes one or more external alignment features, which are used to align the connector or another connection to form an aligned orientation therebetween.

Description

Technical Field

[0001] The present invention relates to connectors for use in breathing circuits and more particularly, but not exclusively, to connectors to be used at the terminal end of breathing tubes. Background Art

[0002] Providing a connector for the terminal end of a breathing tube is important for the consistent and safe delivery of gas therapy to a patient.

[0003] For example, humidified or other gases may be delivered via a series of conduits used to provide a breathing circuit, supplying the gas to a patient interface, such as a nasal cannula, a mouthpiece, a full face mask, a nasal mask. Different conduits may be used in different parts of the breathing circuit.

[0004] For example, the catheter closest to the patient may have a smaller diameter and may need to be more flexible, while the catheter farther from the patient may have a larger diameter, be less flexible, and may include electronics such as a heater or other sensing circuitry.

[0005] A connector or connector system that assists a user in making the correct connector connection is of particular advantage given the different catheters and the sequence of various patient interfaces that may be attached to these different catheters.

[0006] Where reference is made in this specification to patent specifications, other external documents or other sources of information, this is generally for the purpose of providing a context for discussing the features of the invention. Unless specifically stated otherwise, reference to such external documents should not be construed as an admission in any jurisdiction that such documents or such sources of information are prior art or form part of the common general knowledge in the art. Summary of the invention

[0007] It is therefore an object of the present invention to provide a connector or connector system which will at least partially address the aforementioned problems or which will at least provide industry and / or the public with a useful choice.

[0008] Sometimes, it may be necessary to remove or replace the gas flow source, or it may be necessary to remove the patient interface from the breathing circuit, or it may be necessary to replace other conduits that form part of the breathing circuit. If it is difficult or time-consuming to remove a particular component (e.g., a conduit or patient interface) from the circuit, such removal may adversely affect the maintenance or continued delivery of gas therapy to the patient, or may cause frustration to the person performing such removal. Further, in an emergency, a slow or difficult connection mechanism may potentially put the patient's health at risk. Therefore, a catheter connector can provide greater comfort and / or safety for the patient, the catheter connector providing a "quick connect" or "quick disconnect" capability, and facilitating quick and correct alignment and connection of a new connector, and facilitating interchangeability of components.

[0009] In a first aspect, there is provided a connector to be arranged at a terminal end of a breathing conduit, the connector comprising:

[0010] a body including a first end and a second end, the body defining an inner cavity therein, the inner cavity being for passing gas between each of the first end and the second end,

[0011] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0012] the second end, which, in use, engages or is engageable with another connector, and

[0013] wherein the inner surface of the body includes one or more internal connection features configured to connect to the other connector receivable therein, and

[0014] Wherein an outer surface of the body includes one or more external alignment features configured to align the connector or another connection to form an externally aligned connection therebetween.

[0015] In a second aspect, there is provided a connector to be arranged at a terminal end of a breathing conduit, the connector comprising:

[0016] a body including a first end and a second end, the body defining an inner cavity therein, the inner cavity being for passing gas between each of the first end and the second end,

[0017] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0018] the second end, which, in use, engages or is engageable with another connector, and

[0019] wherein the inner surface of the body includes one or more internal connection features configured to connect to the other connector receivable therein, and

[0020] One or more external visual aids are configured to provide, in use, an externally visible guide for aligning the connector or another connector to form an aligned connection therebetween.

[0021] According to the above first and second aspects, one or more additional features described by the following optional configurations are provided.

[0022] The one or more internal connection features may be surface features extending radially inwardly from a surface of the interior sidewall of the body.

[0023] The one or more internal connection features may include one or more tabs.

[0024] The one or more tabs may be raised protrusions.

[0025] The internal connection feature may be oriented to be radially aligned with the one or more external alignment features and / or the one or more external visual aids.

[0026] There may be a pair of said internal connection features.

[0027] At least one (optionally one) of the internal connection features may include a longitudinally extending channel or groove that may be configured to locate, retain or position a printed circuit board (PCB) arrangement.

[0028] The inner surface may include one or more internal alignment features configured to align at least one connection feature of another connector to be received therein into an aligned connection orientation therewith.

[0029] The inner surface may include one or more internal alignment features, which are configured to rotatably orient a male connection feature of another connector into an aligned connection orientation for connection with the connector when in use, or at least orient it to connect with the one or more internal connection features located on or around the inner surface of the body.

[0030] The one or more internal connection features may be surface features extending radially inwardly from a surface of the interior sidewall of the body.

[0031] The internal alignment feature may include one or more tabs.

[0032] The one or more tabs may be raised protrusions.

[0033] The one or more tabs may include a pair of shoulders that are inclined away from each other and away from the ends of the tabs located at the intersection of the shoulders, the ends of the tabs being positioned more substantially toward the terminal end of the second end of the connector than the shoulders.

[0034] The internal alignment feature may be one or more ribs extending substantially in the longitudinal direction of the connector and along the inner surface, which may optionally be a surface of an inner side wall of the body.

[0035] The internal alignment features may include: 1 to 10 ribs, or 2 to 8 ribs, or 4 to 6 ribs, or 2 ribs, or 3 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs.

[0036] Two or more sets of internal alignment features may be provided on or about the inner surface of the body, optionally there are two sets of alignment features.

[0037] Each set of the internal alignment features may include an equal number of internal alignment features as the other set.

[0038] The inner surface may include two of the internal alignment features.

[0039] The internal alignment feature, in use, may rotatably align a pair of fingers extending from another connector when the pair of fingers are inserted into or placed in engagement or surface contact with the inner surface of the connector.

[0040] The first end is configured to engage a terminal end of a breathing conduit.

[0041] The first end may include a sleeve portion that will attach to and form a pneumatic connection with a terminal end of the breathing conduit.

[0042] At least a portion of the sleeve portion may be inserted into, or be positioned or received within, an inner surface or lumen of a terminal end of a breathing catheter.

[0043] At least a portion of the sleeve portion may be received on, or to be positioned or accommodated on, an outer surface of a terminal end of the breathing conduit.

[0044] The external alignment feature and / or the external visual aid may include one or more external surface features extending radially outward from an outer surface of the outer sidewall of the body.

[0045] The external alignment feature may include one or more tabs.

[0046] The one or more tabs may be raised protrusions.

[0047] The external alignment feature may be one or more ribs (or protrusions) extending substantially in the longitudinal direction of the connector and along the outer surface, which may optionally be a surface of an outer side wall of the body.

[0048] At least one or each rib or protrusion may include a pair of shoulders which slope away from each other and away from the ends of the rib or protrusion located at the intersection of the shoulders, the ends of the rib or protrusion being positioned more substantially toward the terminal end of the second end of the connector than the shoulders.

[0049] The at least one or each rib or projection may be substantially tongue-shaped, and / or substantially triangular-shaped and / or substantially taper towards the ends.

[0050] The external alignment features may include: 1 to 10 ribs, or 2 to 8 ribs, or 4 to 6 ribs, or 2 ribs, or 3 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs.

[0051] The external alignment features may be evenly or equidistantly spaced, arranged or disposed from one another around a circumference or radius of the exterior surface.

[0052] The external alignment feature may be a protrusion extending a length in a substantially longitudinal direction of the connector and along the outer surface, with the height of the protrusion from the outer surface varying along the length.

[0053] The height of the external alignment features may taper along the length.

[0054] The height of the protrusion may be:

[0055] a. decreases in a direction extending from the base of the external alignment feature toward the terminal end of the second end of the connector, or

[0056] b. Increases in a direction extending from the base of the external alignment feature toward the terminal end of the second end of the connector.

[0057] A stepped protrusion may be provided substantially at or towards the base of one or each said external alignment feature, the stepped protrusion being a protrusion extending radially outwardly further than an adjacent portion of the external alignment feature.

[0058] The stepped protrusion may be configured to be co-positioned or co-positionable so that during connection between the connector and another connector, the stepped protrusion keys with a complementary shaped groove or cutout of at least a portion of a sleeve portion of the other connector when the stepped protrusion connects with the groove or cutout.

[0059] The stepped protrusion may be configured to act as a key to complementarily locate with a complementary shaped recess or cutout of a component to which it is connected.

[0060] A recess or cutout may be provided substantially at or towards the base of one or each said external alignment feature, the recess or cutout being configured to receive a projection or protrusion of a complementary shaped portion of another connector.

[0061] The groove or cutout can be configured to be co-positioned or co-positionable so that during connection between the connector and another connector, the groove or cutout keys with the complementary protrusion or projection when the groove or cutout connects with the complementary protrusion or projection of at least a portion of the sleeve portion of the other connector.

[0062] The groove or cutout may be configured to act as a keyway to complementarily locate with a complementary shaped protrusion or projection of a component to which the groove or cutout is to be connected.

[0063] The stepped protrusions or recesses or cutouts may have the following shapes or profiles for locating with or receiving recesses or cutouts or protrusions or projections of substantially complementary shapes: semicircular, triangular, rectangular or other rectilinear or geometric shapes, elliptical, wedge-shaped.

[0064] A radially extending flange or lip may project from the outer surface of the body.

[0065] When manufactured with the outer surface of a connector, the flange or lip may substantially define a stop end for a maximum engagement point or length for another connector.

[0066] The flange or lip may include one or both of the following:

[0067] i. one or more radial and / or longitudinal recessed or grooved areas, or

[0068] ii. One or more radially and / or longitudinally extending raised areas.

[0069] The flange or lip may be longitudinally extending so as to be configured to engage a terminal end of a breathing conduit.

[0070] The sheath may optionally be an overmolded sheath providing for pneumatic engagement of an outer surface of the body with a terminal end of a breathing tube, and optionally the sheath pneumatically engages the first end of the connector with the terminal end of the breathing tube.

[0071] The sheath may include one or both of the following:

[0072] i. one or more radial and / or longitudinal recessed or grooved areas, or

[0073] ii. One or more radially and / or longitudinally extending raised areas.

[0074] The recessed or slotted area and / or the extended raised area of ​​the sheath may be fully or at least partially aligned with the recessed or slotted area and / or the extended raised area of ​​the flange or lip.

[0075] An inner surface of the body (optionally toward the second end of the connector) may be configured to locate, hold or position a printed circuit board (PCB) arrangement.

[0076] The PCB facility circuitry may be used to: control, sense (eg, temperature, humidity, flow rate), heat (eg, heater wires), or other electronic components for a breathing conduit to be used as part of a breathing circuit.

[0077] The connector may provide for a plurality of separate sealing surfaces on which a separate connection may be made with another separate connector, and alternatively there may be two separate sealing surfaces to accommodate two different connectors.

[0078] The connector may be configured to provide a first separation sealing surface when separately connected thereto by another connector, the first sealing surface being defined by one or both of the following:

[0079] - a side wall surface of a radially extending flange or lip projecting from the outer surface of the body, the side wall facing the terminal end face of another connector which may be substantially carried on the side wall, or

[0080] - an inner surface substantially at or towards a terminal end of said second end of said connector when the connector is carried on a radially outwardly facing surface of another connector, such as a radially outwardly facing surface of another connector.

[0081] The connector may be configured to provide a body of the second end for sealing against a second sealing surface of another connector, the second sealing surface being defined by:

[0082] An internal side wall surface is basically arranged at the bottom end of the second end of the other connector or toward the bottom end. When in use, the main body of the second end of the connector is supported on the internal side wall surface or along the internal side wall surface at a position at the bottom end of the other connector or toward the bottom end.

[0083] The connector may be configured to provide a body of the second end for sealing against a third sealing surface of another connector, the third sealing surface being defined by:

[0084] The inner side wall surface of the projection extends radially inwardly from the inner side wall surface of the second end of the other connector when the body of the second end is substantially carried on or along the surface of the projection of the other connector.

[0085] The connector may be configured to provide a body of the second end for sealing against a fourth sealing surface of another connector, the fourth sealing surface being defined by:

[0086] An interior side wall surface of a second end of another connector, wherein the interior side wall surface extends radially outward from one or more male connection features (such as one or more locking fingers) as a shoulder, and a portion of the body of the second end of the connector is substantially supported on the radially outward surface of the shoulder.

[0087] The connector may be configured to provide a body of the second end for sealing against a fifth sealing surface of another connector, the fifth sealing surface being defined by:

[0088] The radially outward surfaces of the one or more male connection features, and in particular, the radially outward surfaces of the one or more locking fingers, are located within the second end of the other connector.

[0089] Where the connector can be configured to provide a body of the second end for sealing on a sixth sealing surface of another connector, the sixth sealing surface can be defined by one or both of the following:

[0090] a shoulder or lug extending radially outwardly from one or more male connection features, in particular, a radially outwardly extending face or lug extending radially outwardly from one or more locking fingers located within the second end of the other connector, or

[0091] Extending between the outward periphery of the shoulder extending radially outward from the one or more male connection features of the other connector are sides or bases that serve as a platform, which extend as a platform within the second end of the other connector.

[0092] The or an external alignment feature of the connector may be shaped or configured to:

[0093] preventing the internal connection feature of the connector from connecting to another connector when the external alignment feature of the connector and the external alignment feature of another connector are in a misaligned orientation, and / or

[0094] When the external alignment features of the connector and the external alignment features of another connector are in an aligned orientation, the internal connection features of the connector are allowed to connect with another connector.

[0095] In a third aspect, there is provided a connector to be arranged at a terminal end of a breathing conduit, the connector comprising:

[0096] a body including a first end and a second end, the body defining an inner cavity therein, the inner cavity being for passing gas between each of the first end and the second end,

[0097] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0098] the second end, which, in use, engages or is engageable with another connector, and

[0099] wherein the inner surface of the body includes one or more internal male connection features extending therein, the internal male connection features being configured to connect with a female end or a female portion of another connector that is receivable with the male connection features, the internal male connection features including one or more (optionally, a pair) locking fingers, and

[0100] The connector further comprises one or both of the following:

[0101] a. the one or more internal male connection features are surrounded by an outer wall, the outer surface of the outer wall being tapered, gradually becoming smaller in a substantially longitudinal direction of the connector,

[0102] b. The one or more internal convex connection features are surrounded by an outer wall, the outer surface of the outer wall or at least the outer surface includes

[0103] One or more external alignment features configured to align the connector or another connection to form an externally aligned connection therebetween, and / or one or more external visual aids configured to provide externally visible guides when in use to align the connector or another connector to form an aligned connection therebetween.

[0104] In a fourth aspect, there is provided a connector to be arranged at a terminal end of a breathing conduit, the connector comprising:

[0105] a body including a first end and a second end, the body defining an inner cavity therein, the inner cavity being for passing gas between each of the first end and the second end,

[0106] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0107] the second end, which, in use, engages or is engageable with another connector, and

[0108] wherein the inner surface of the body includes one or more internal male connection features extending therein, the internal male connection features being configured to connect with a female end or a female portion of another connector that is receivable with the male connection features, the internal male connection features including one or more (optionally, a pair) locking fingers, and

[0109] wherein the connector further comprises an outer wall surrounding the one or more internal male connection features, wherein an outer surface of the outer wall is tapered and gradually tapers in a substantially longitudinal direction of the connector,

[0110] In a fifth aspect, there is provided a connector to be arranged at a terminal end of a breathing conduit, the connector comprising:

[0111] a body including a first end and a second end, the body defining an inner cavity therein, the inner cavity being for passing gas between each of the first end and the second end,

[0112] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0113] the second end, which, in use, engages or is engageable with another connector, and

[0114] wherein the inner surface of the body includes one or more internal male connection features extending therein, the internal male connection features being configured to connect with a female end or a female portion of another connector that is receivable with the male connection features, the internal male connection features including one or more (optionally, a pair) locking fingers, and

[0115] Wherein the connector further comprises an outer wall surrounding the one or more internal male connection features, the outer surface or at least the outer surface of the outer wall comprising:

[0116] One or more external alignment features configured to align the outer wall of the connector or the connector or another connection to form an externally aligned connection therebetween, and / or one or more external visual aids configured to provide externally visible guides when in use to align the connector or another connector to form an aligned connection therebetween.

[0117] According to the third, fourth and fifth aspects above, one or more additional features described by the above or below optional configurations are provided.

[0118] The diameter of the outer wall of the second end may be smallest at a terminal end of the second end, wherein the diameter gradually increases in a direction extending away from the terminal end of the second end toward the first end.

[0119] The one or more locking fingers may be substantially received within the second end of the connector.

[0120] 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.

[0121] The outer wall may include one or more alignment features and / or one or more external visual aids, wherein the one or more alignment features are configured to align the outer wall and the connector or another connection to form an aligned connection therebetween, and / or the one or more external visual aids are configured to provide an externally visible guide when in use to align the connector or another connector to form an aligned connection therebetween.

[0122] The one or more internal male connection features may be oriented to radially align with the one or more external alignment features and / or the one or more external visual aids.

[0123] The external alignment features may include one or more cutouts on a terminal end face of the outer wall of the second end, the cutouts being configured to be received by a substantially complementary shaped portion of a connector with which the outer wall is to contact.

[0124] The external alignment features may be evenly or equidistantly spaced, arranged or disposed from one another around the circumference of the terminal end face of the outer wall of the second end.

[0125] The external alignment feature may be configured to be co-positioned or co-positionable so as to key with a complementary shaped protrusion of a sleeve portion of the other connector when the external alignment feature connects with the protrusion during connection between the end face of the second end of the connector and the other connector.

[0126] The locking fingers may include a groove on an outer surface of each of the fingers for receiving an internal connection feature of another connector configured for connection thereto, such as a raised protrusion that may extend in a radially inward direction toward the groove or tab.

[0127] The recess may be shaped to receive an internal connection feature of another connector.

[0128] The tip of the locking finger may be of at least partially chamfered configuration.

[0129] A groove or cutout may be provided at an end face of the outer wall of the second end of the connector, the groove or cutout being configured to receive or be placed in connection with a projection or protrusion of a complementary shaped portion of another connector.

[0130] The groove or cutout can be configured to be co-positioned or co-positionable so that during connection between the connector and another connector, the groove or cutout keys with the complementary protrusion or projection when the groove or cutout connects with the complementary protrusion or projection of at least a portion of the sleeve portion of the other connector.

[0131] The groove or cutout may be configured to act as a keyway to complementarily locate with a complementary shaped protrusion or projection of a component to which the groove or cutout is to be connected.

[0132] A longitudinally extending protrusion may be provided substantially at or toward an end surface of the outer wall of the second end of the connector, the protrusion being a projection that extends longitudinally further than an adjacent portion of the end surface of the outer wall of the second end of the connector.

[0133] The protrusion can be configured to be co-positioned or co-positionable so that during connection between the connector and another connector, the stepped protrusion keys with a groove or cutout of a complementary shape of at least a portion of the other connector when the stepped protrusion connects with the groove or cutout.

[0134] The projection may be configured to act as a key to complementarily locate with a complementary shaped recess or cutout of a component to which it is connected.

[0135] The alignment features may be grooves or cutouts of the following shapes or profiles for locating with or receiving protrusions or projections of substantially complementary shapes of another connector: semicircular, triangular, rectangular or other rectilinear or geometric shapes, elliptical, wedge-shaped.

[0136] The outer wall may be a sleeve configured to function as a 22 mm male tapered connector to another connector comprising a female connection facility.

[0137] The outer wall may be a sleeve configured to function as a 22 mm female tapered connector to another connector comprising a male connection facility.

[0138] The body of the connector may be formed of polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS), or polypropylene (PP).

[0139] The body of the connector may include a flared portion at the first end of the connector.

[0140] The inner surface of the second end of the body may also include a protrusion for engaging (eg, interference fit) a comparably shaped portion of another connector to be received by or within an inner surface defined by the outer wall.

[0141] The projection may extend radially outwardly from the one or more locking fingers as a shoulder, optionally also extending longitudinally in a direction towards the open end of the second end of the connector.

[0142] The projection may extend radially outwardly as a shoulder from one or both of:

[0143] said one or more locking fingers,

[0144] a base extending as a substrate from the inner surface of the outer wall,

[0145] Optionally, the shoulder extends longitudinally in a direction towards an open end of the second end of the connector.

[0146] A space may be defined between the radially outward surface of the shoulder and the inner surface of the outer wall, the space being receivable of a terminal end of another connector received as an interference fit between the outward surface of the shoulder and the inner surface of the outer wall.

[0147] The base may be substantially adjacent to or at least partially abut the shoulder and the inner surface of the outer wall, the base extending as a platform between the outward periphery of the shoulder and the inner surface of the wall.

[0148] The base may define a sealing surface against which a terminal end or terminal face of another connector may engage, optionally forming a pneumatic connection.

[0149] The cuff may be disposed about the first end of the connector body and may optionally at least partially overlap a portion of the second end of the connector body.

[0150] The cuff may be pre-formed or may be an overmold material that is over-molded around the connector body.

[0151] The envelope may be sized to provide a relatively smooth or uninterrupted outer surface profile, wherein the outer surface of the outer wall substantially abuts or is substantially adjacent to the intersection with the envelope.

[0152] The cuff may include an indicator of the size of the connector or a particular component on which the cuff is disposed, or the size of a component associated with the connector (optionally, the component is a patient interface such as a nasal cannula).

[0153] The cuff may be color coded as an indicator of connector size or a particular component or component size associated with the connector (optionally, the component is a patient interface such as a nasal cannula).

[0154] The cuff may be sized to transition from a substantially circular outer surface contour form when substantially adjacent or substantially proximate to or adjacent to an outer surface of an outer wall of the connector to a substantially square outer surface contour form substantially (optionally, entirely) disposed around the first end of the connector body.

[0155] The cuff may extend from the second end of the connector body so as to overlap over an outer surface of a breathing tube with which the connector will or can engage in use, or the cuff extends so as to overlap over at least a portion of a component associated with a terminal end of a breathing tube.

[0156] The cuff may be an elastic or elastomerized material, optionally silicone or a thermoplastic elastomer (TPE).

[0157] The body of the connector may include at least one groove or slot shaped to receive one or more splines on the inner surface of the cuff.

[0158] The swivel connector component may be connected to the first end of the connector when in use.

[0159] The rotary connector may be configured to be coupled to a terminal end of a conduit, and the rotary connector is configured to be coupled to a body of the connector.

[0160] The connector may include at least one retaining projection extending in a radially inward direction from a body of the connector.

[0161] The retaining tabs may include one or both of the following:

[0162] an inclined surface optionally inclined away from the first end of the body,

[0163] A surface that is substantially perpendicular to the inner wall of the body of the connector.

[0164] The connector may include at least one attachment arm.

[0165] The attachment may include at least one retaining tab.

[0166] At least one attachment arm may be cantilevered relative to the body of the connector to allow flexibility of the attachment arm in at least a radial direction (optionally radially inward, outward, or both) of the connector body.

[0167] The connector may include at least one cut-out region around at least a portion of the attachment arm. The cut-out region improves flexibility in a radial direction.

[0168] The connector may include a pair of attachment arms.

[0169] The attachment arms may be located within grooves or slots shaped to receive splines on the inner surface of the cuff.

[0170] The body or attachment arm of the connector may include a recess for receiving part of the rotary connector component.

[0171] The swivel-type connector component may be connected to the conduit via threads.

[0172] The rotary connector may be connected to the first end such that the connector body and the rotary connector are allowed to rotate relative to each other but are prevented from axially moving relative to each other.

[0173] A rotary connector may include one or more surfaces that form a rotatable seal with an interior surface of the connector body.

[0174] The connector may be configured to provide a first separation surface for sealing when separately connected thereto by another connector, the first surface being defined by:

[0175] The end face of the second end of a connector when the connector is carried on a flange or lip (or shoulder) that projects outwardly or away from the outer surface of the body of another connector.

[0176] The connector may be configured to provide a second separation surface for sealing when separately connected thereto by another connector, the second surface being defined by:

[0177] An inner side wall surface, which is substantially disposed at or toward the bottom end of the second end of the connector, and a portion of another connector (such as a lip or flange, which may optionally include a shoulder) is substantially supported on or along the inner side wall surface at a position at or toward the bottom end.

[0178] The connector may be configured to provide a third separation surface for sealing when it is separately connected via another connector, the third surface being defined by:

[0179] An inner side wall surface of a protrusion extending radially inwardly from the inner side wall surface of the second end, with a portion of another connector (such as a lip or flange, which may optionally include a shoulder) being substantially supported on or along the surface of the protrusion.

[0180] The connector may be configured to provide a fourth separation surface for sealing when it is separately connected via another connector, the fourth surface being defined by:

[0181] an inner side wall surface at the second end of the connector, wherein the inner side wall surface extends radially outward from the one or more male connection features (such as one or more locking fingers) as a shoulder, and a portion of another connector (such as a lip or flange, which may optionally include a shoulder) is substantially supported on the radially outward surface of the shoulder.

[0182] The connector may be configured to provide a fifth separation surface for sealing when it is separately connected via another connector, the fifth surface being defined by:

[0183] The radially outward surfaces of the one or more male connection features, and in particular, the radially outward surfaces of the one or more locking fingers, are located within the second end of the connector.

[0184] The connector may be configured to provide a sixth separation surface for sealing when separately connected thereto by another connector, the sixth surface being defined by one or both of the following:

[0185] a shoulder or lug extending radially outwardly from one or more male connection features, in particular, a radially outwardly extending face or lug extending radially outwardly from one or more locking fingers located within the second end of the connector, or

[0186] Extending between the outward periphery of a shoulder extending radially outward from the one or more male connection features and the inner surface of the wall are sides or bases that serve as platforms.

[0187] The or an external alignment feature of the connector may be shaped or configured to:

[0188] preventing the internal connection feature of the connector from connecting to another connector when the external alignment feature of the connector and the external alignment feature of another connector are in a misaligned orientation, and / or

[0189] When the external alignment features of the connector and the external alignment features of another connector are in an aligned orientation, the internal connection features of the connector are allowed to connect with another connector.

[0190] In a sixth aspect, there is provided a connector for use with a catheter to supply gas to a user, the connector comprising:

[0191] a body including a first end and a second end, the body defining an inner cavity therein, the inner cavity being for passing gas between each of the first end and the second end,

[0192] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0193] the second end, which, in use, engages or is engageable with another connector, and

[0194] wherein the outer surface of the body includes a cuff disposed at least substantially around the first end of the connector body (optionally at least partially overlapping a portion of the second end of the connector body), the cuff extending substantially longitudinally downwardly along at least a portion of the length of a breathing tube to be or engageable with the first end, and

[0195] The envelope is an elasticized material or an elastic type material.

[0196] According to the above aspects, one or more additional features described by way of optional configurations above or below are provided.

[0197] The overlap of the cuff and the breathing tube may at least partially help relieve strain that would otherwise be applied to a joint or connection formed between the breathing tube and the first end or a component associated with the first end.

[0198] The diameter of the outer wall of the second end may be smallest at a terminal end of the second end, wherein the diameter gradually increases in a direction extending away from the terminal end of the second end toward the first end.

[0199] The one or more locking fingers may be substantially received within the second end of the connector.

[0200] 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.

[0201] The outer wall may include one or more alignment features and / or one or more external visual aids, wherein the one or more alignment features are configured to align the outer wall and the connector or another connection to form an aligned connection therebetween, and / or the one or more external visual aids are configured to provide an externally visible guide when in use to align the connector or another connector to form an aligned connection therebetween.

[0202] The locking fingers may include a groove on an outer surface of each of the fingers for receiving an internal connection feature of another connector configured for connection thereto, such as a raised protrusion that may extend in a radially inward direction toward the groove or tab.

[0203] The recess may be shaped to receive an internal connection feature of another connector.

[0204] The tip of the locking finger may be of at least partially chamfered configuration.

[0205] A groove or cutout may be provided at an end face of the outer wall of the second end of the connector, the groove or cutout being configured to receive a projection or protrusion of a complementarily shaped portion of another connector.

[0206] The groove or cutout can be configured to be co-positioned or co-positionable so that during connection between the connector and another connector, the groove or cutout keys with the complementary protrusion or projection when the groove or cutout connects with the complementary protrusion or projection of at least a portion of the sleeve portion of the other connector.

[0207] The groove or cutout may be configured to act as a keyway to complementarily locate with a complementary shaped protrusion or projection of a component to which the groove or cutout is to be connected.

[0208] A longitudinally extending protrusion may be provided substantially at or toward an end surface of the outer wall of the second end of the connector, the protrusion being a projection that extends longitudinally further than an adjacent portion of the end surface of the outer wall of the second end of the connector.

[0209] The protrusion can be configured to be co-positioned or co-positionable so that during connection between the connector and another connector, the stepped protrusion keys with a groove or cutout of a complementary shape of at least a portion of the other connector when the stepped protrusion connects with the groove or cutout.

[0210] The projection may be configured to act as a key to complementarily locate with a complementary shaped recess or cutout of a component to which it is connected.

[0211] The stepped protrusions or recesses or cutouts may have the following shapes or profiles for locating with or receiving recesses or cutouts or protrusions or projections of substantially complementary shapes: semicircular, triangular, rectangular or other rectilinear or geometric shapes, elliptical, wedge-shaped.

[0212] The outer wall may be a sleeve configured to function as a 22 mm male tapered connector to another connector comprising a female connection facility.

[0213] The outer wall may be a sleeve configured to function as a 22 mm female tapered connector to another connector comprising a male connection facility.

[0214] The connector body may be formed of polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS), or polypropylene (PP).

[0215] The inner surface of the second end of the body may also include a protrusion for engaging (eg, interference fit) a comparably shaped portion of another connector to be received by or within an inner surface defined by the outer wall.

[0216] The projection may extend radially outwardly from the one or more locking fingers as a shoulder, optionally also extending longitudinally in a direction towards the open end of the second end of the connector.

[0217] The projection may extend radially outwardly as a shoulder from one or both of:

[0218] said one or more locking fingers,

[0219] a base extending as a substrate from the inner surface of the outer wall,

[0220] Optionally, the shoulder extends longitudinally in a direction towards an open end of the second end of the connector.

[0221] A space may be defined between the radially outward surface of the shoulder and the inner surface of the outer wall, the space being receivable of a terminal end of another connector received as an interference fit between the outward surface of the shoulder and the inner surface of the outer wall.

[0222] The base may be substantially adjacent to or at least partially abut the shoulder and the inner surface of the outer wall, the base extending as a platform between the outward periphery of the shoulder and the inner surface of the wall.

[0223] The base may define a sealing surface against which a terminal end or terminal face of another connector may engage, optionally forming a pneumatic connection.

[0224] The cuff may be disposed about the first end of the connector body and may optionally at least partially overlap a portion of the second end of the connector body.

[0225] The cuff may be preformed or may be an overmold material that is overmolded around the connector body.

[0226] The envelope may be sized to provide a relatively smooth or uninterrupted outer surface profile, wherein the outer surface of the outer wall substantially abuts or is substantially adjacent to the intersection with the envelope.

[0227] The cuff may include an indicator of the size of the connector or a particular component on which the cuff is disposed, or the size of a component associated with the connector (optionally, the component is a patient interface such as a nasal cannula).

[0228] The cuff may be color coded as an indicator of connector size or a particular component or component size associated with the connector (optionally, the component is a patient interface such as a nasal cannula).

[0229] The cuff may be sized to transition from a substantially circular outer surface contour form when substantially adjacent or substantially proximate to or adjacent to an outer surface of an outer wall of the connector to a substantially square outer surface contour form substantially (optionally, entirely) disposed around the first end of the connector body.

[0230] The body of the connector may include at least one groove or slot shaped to receive one or more splines on the inner surface of the cuff.

[0231] The rotary connector component can be connected to the main body of the connector when in use.

[0232] The rotary connector may be configured to be connected to a terminal end of the catheter, and the rotary connector is configured to be connected to a body of the connector.

[0233] The connector may include at least one retaining projection extending in a radially inward direction from a body of the connector.

[0234] The retaining tabs may include one or both of the following:

[0235] An inclined surface optionally inclined away from the first end of the body

[0236] A surface that is substantially perpendicular to the inner wall of the body of the connector.

[0237] The connector may include at least one attachment arm.

[0238] The attachment may include at least one retaining tab.

[0239] At least one attachment arm may be cantilevered relative to the body of the connector to allow flexibility of the attachment arm in at least a radial direction (optionally radially inward, outward, or both) of the connector body.

[0240] The connector may include at least one cut-out region around at least a portion of the attachment arm. The cut-out region improves flexibility in a radial direction.

[0241] The connector may include a pair of attachment arms.

[0242] The attachment arms may be located within grooves or slots shaped to receive splines on the inner surface of the cuff.

[0243] The body or attachment arm of the connector may include a recess for receiving part of the rotary connector component.

[0244] The swivel-type connector component may be connected to the conduit via threads.

[0245] The rotary connector may be connected to the first end such that the connector body and the rotary connector are allowed to rotate relative to each other but are prevented from axially moving relative to each other.

[0246] A rotary connector may include one or more surfaces that form a rotatable seal with an interior surface of the connector body.

[0247] The or an external alignment feature of the connector may be shaped or configured to:

[0248] preventing the internal connection feature of the connector from connecting to another connector when the external alignment feature of the connector and the external alignment feature of another connector are in a misaligned orientation, and / or

[0249] When the external alignment features of the connector and the external alignment features of another connector are in an aligned orientation, the internal connection features of the connector are allowed to connect with another connector.

[0250] In a seventh aspect, there is provided a connector as described in the first aspect or the second aspect, wherein the other connector is configured to be engaged with the connector or is engageable with the connector.

[0251] In an eighth aspect, a connector is provided, wherein the connector is configured to be engaged with or engageable with a second connector, the second connector being defined by the connector of the first aspect or the second aspect.

[0252] The connector may be sealed to at least one of the following surfaces of the second connector:

[0253] The outer surface of the body,

[0254] The side wall of the radially extending flange or lip,

[0255] An outer surface of the cuff is disposed about the first end of the connector body.

[0256] In a ninth aspect, there is provided a connector to be arranged at a terminal end of a breathing conduit, the connector comprising:

[0257] a body, the body comprising a first end and a second end,

[0258] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or at least with a component associated with the terminal end of the breathing tube, and

[0259] the second end, which in use is engaged or capable of being engaged with the second connector, and

[0260] wherein the inner surface of the body includes one or more internal connection features and / or alignment features configured to connect with the second connector receivable therein, and

[0261] wherein the one or more internal connection features and / or alignment features include at least one of the following:

[0262] Radially inwardly projecting projections or ribs

[0263] A groove projecting radially outward from an imaginary or actual inner wall or surface.

[0264] The alignment feature may be configured to align the connector with a second connector.

[0265] The connection feature may be configured to facilitate connection between the connector and a second connector.

[0266] The connection feature and / or the alignment feature may at least partially provide a seal or provide a sealing surface between the connector and the second connector.

[0267] At least one of the ribs or protrusions of the connector may be configured to mate with a corresponding groove of a second connector (eg, a groove of a sleeve or sleeve), and / or at least one groove of the connector may be configured to mate with a corresponding rib or protrusion of a second connector.

[0268] One or more internal connection features and / or alignment features may be configured to co-locate or be co-locatable to key with a complementary shaped protrusion or recess of a portion of the second connector.

[0269] At least one of the ribs and / or grooves may be arranged circumferentially around the inner surface of the connector, optionally the ribs and / or projections are equally spaced around the circumference of the inner surface of the connector.

[0270] There may be one or more or more ribs and / or grooves, optionally 2 or 3 or 4 or 5 or 6 ribs and / or grooves.

[0271] There may be 4 ribs.

[0272] At least one projection or rib may extend in a substantially longitudinal direction along the inner surface of the body.

[0273] At least one projection or rib may extend substantially from at or near a terminal end of the second end of the connector in a direction towards the first end of the connector.

[0274] At least one groove may be located in a side wall or inner surface of the body of the connector, the at least one groove being configured to receive an associated protrusion of the second connector when the second connector is mated or connected with the connector.

[0275] The connector can be configured to provide at least a first inner surface for sealing on an outer portion of the second connector when connected or mated through 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 being located at or near the second end of the body of the connector and being arranged to be positioned substantially continuously and substantially circumferentially around the outer portion of the second connector, with which the first inner surface will be connected or formed into a mating arrangement.

[0276] The alignment feature or connection feature may form at least a portion of the first inner surface of the body.

[0277] At least one projection or rib may form at least a portion of the first inner surface.

[0278] At least one protrusion or rib may extend in a substantially longitudinal direction along a sidewall of the first inner surface.

[0279] At least one projection or rib may extend substantially from at or near a terminal end of the second end of the connector in a direction towards the first end of the connector.

[0280] The first inner surface may be substantially curved when viewed in cross-section.

[0281] The profile of the first inner surface (eg, the radius of curvature and the bend position of the first inner surface) may match the outer profile (eg, the outer curve or curvature) of the cuff of the second connector.

[0282] At least one alignment feature or connection feature (optionally a protrusion or rib) is of sufficient size to extend substantially to an outermost top end of an outer profile of the second connector in use.

[0283] At least one alignment feature or connection feature (optionally, a protrusion or rib) can be of sufficient size to extend substantially to a position between the outermost top end of the outer contour of the second connector's sleeve and the end of the sleeve closest to the terminal of the second connector when in use.

[0284] At least one alignment feature or connection feature (optionally, a protrusion or rib) can be of sufficient size so that, when in use, it extends substantially to a position between the outermost top end of the outer contour of the sleeve of the second connector and the end of the sleeve closest to the second connector that is connected to the end of the catheter.

[0285] The connector can be configured to provide a second inner surface for sealing when connected or mated through or with the second connector, the second surface being defined as a side wall surface by a substantially radially extending flange or lip protruding radially inward from the inner surface of the body, the side wall surface providing a surface.

[0286] The face may be of sufficient size to seal against a corresponding face of the second connector.

[0287] The face may be configured to provide a substantially planar surface upon which a portion or surface of the second connector may mate or engage with the face.

[0288] The face may be oriented to substantially face the second end of the connector.

[0289] The face may be configured to mate or seal against a side wall or a tab or a lip or a base or an end of a second connector.

[0290] The radially extending flange or lip may include at least one of the internal connection features or alignment features.

[0291] At least one of the connection features or alignment features may be a rib or a protrusion.

[0292] The face may include one or more internal connection features and / or alignment features that are co-located or co-locatable to key with a complementary shaped protrusion or recess of a portion of the second connector.

[0293] At least one groove may be located in a side wall or an inner surface of the connector, the at least one groove being adapted to receive a protrusion of the second connector.

[0294] The grooves may be depressions or other surface relief features provided on the face.

[0295] The depressions or other surface features may be cutouts in the face.

[0296] The recess may be configured to accommodate or be receivable an associated protrusion or other shaped feature of the second connector when the second connector is mated or connected with the second inner surface.

[0297] At least one protrusion may be located in a side wall or inner surface of the connector, the at least one protrusion being adapted to accommodate a recess of the second connector.

[0298] The connector can be configured to provide at least a third inner surface for sealing on an outer portion of the second connector when connected or mated through or with the second connector, the third inner surface being provided by a circumferential portion of the inner surface of the body, optionally located at or near the first end of the body or at or near the second end of the body of the connector, and arranged to be positioned substantially continuously and substantially circumferentially around the outer portion of the second connector, with which the third inner surface will be connected or formed into a mating arrangement therewith.

[0299] An alignment feature or a connection feature may form at least a portion of said third inner surface of the body.

[0300] At least one groove may form at least a portion of the third inner surface.

[0301] At least one recess may be shaped to receive a protrusion of the second connector.

[0302] The groove may include a pair of shoulders that slope away from each other and away from an end located at an intersection of the shoulders, the end of the groove being located substantially more toward the first end of the connector than the shoulders.

[0303] The at least one groove may be substantially tongue-shaped, and / or substantially triangular-shaped and / or substantially taper towards the end.

[0304] The groove may be a longitudinal channel.

[0305] The connector may include one or more sealing surfaces defined by one or both of:

[0306] The first sealing surface as described above,

[0307] The second sealing surface as described above,

[0308] A third sealing surface as described above.

[0309] The adapter may be configured to facilitate connection between two connectors, wherein the connector of any one of the first to ninth aspects is provided as part of the adapter.

[0310] A breathing catheter assembly may include:

[0311] breathing tube, and

[0312] The connector according to any one of the first to ninth aspects,

[0313] The connector is coupled to, or associated with, the breathing conduit.

[0314] The or an external alignment feature of the connector may be shaped or configured to:

[0315] preventing the internal connection feature of the connector from connecting to another connector when the external alignment feature of the connector and the external alignment feature of another connector are in a misaligned orientation, and / or

[0316] When the external alignment features of the connector and the external alignment features of another connector are in an aligned orientation, the internal connection features of the connector are allowed to connect with another connector.

[0317] In a tenth aspect, a connector assembly is provided, the connector assembly comprising a first connector and a second connector, the first connector being used to connect with the second connector, the first connector comprising:

[0318] a first connector body including a first end and a second end, the first connector body defining an inner cavity therein for passing gas between each of the first end and the second end,

[0319] the first end, which, in use, engages or is engageable with a terminal end of a breathing conduit or a component associated with the terminal end of the breathing conduit, and

[0320] the second end, which in use is engaged or engageable with the second connector, and

[0321] wherein the inner surface of the body includes one or more internal connection features, and

[0322] wherein the outer surface of the body includes one or more external alignment features;

[0323] The second connector comprises:

[0324] a second connector body including a first end and a second end, the body defining an inner cavity therein for passing gas between each of the first end and the second end,

[0325] the first end, which, in use, engages or is engageable with the terminal end of the breathing conduit or with a component associated with the terminal end of the breathing tube, and

[0326] the second end, which, in use, engages or is engageable with the first connector, and

[0327] wherein the inner surface of the body includes one or more internal connection features

[0328] an outer wall surrounding the one or more internal connection features, the outer wall or at least an outer surface of the outer wall comprising one or more external alignment features;

[0329] Wherein when the external alignment feature of the first connector and the external alignment feature of the second connector are in an aligned orientation, the internal connection feature of the first connector and the internal connection feature of the second connector are oriented for connection.

[0330] When the external alignment features of the first connector and the external alignment features of the second connector are in a misaligned orientation, the internal connection features of the first connector and the internal connection features of the second connector are prevented from connecting.

[0331] The first connector may be defined by the connectors of the first aspect and the second aspect.

[0332] The second connector may be defined by the connector of any one of the third aspect, the fourth aspect or the fifth aspect.

[0333] The internal connection feature of the first connector or the second connector may be a male connection feature and optionally include one or more (optionally, a pair) locking fingers.

[0334] The internal connection feature of the first connector or the second connector may include one or more (optionally, a pair) locking fingers.

[0335] The first connector and / or the second connector may include one or more external visual aids configured to provide, in use, an externally visible guide for aligning the connectors to form an aligned connection therebetween.

[0336] An outer surface of an outer wall of the first connector and / or the second connector may taper in a substantially longitudinal direction of the connectors.

[0337] The term "comprising" as used in this specification means "consisting at least in part of..." When interpreting each statement in this specification containing the term "comprising", there may also be features other than the one or those features following the term. Related terms such as "comprise" and "comprises" are to be interpreted in the same manner.

[0338] The present invention may also be broadly described as consisting of the parts, elements and features individually or collectively referred to or specified in the specification of the present application, and any or all combinations of any two or more of said parts, elements or features, and, when specific integers having known equivalents in the art to which the present invention relates are mentioned herein, such known equivalents are deemed to be incorporated herein as if individually listed.

[0339] The present invention lies in the foregoing and also contemplates a variety of structures, of which only some examples are given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0340] Preferred embodiments of the invention will now be described, by way of example only, and with reference to the accompanying drawings, in which:

[0341] Figure 1 is a perspective view of the connector as seen from the second end (connector connection end).

[0342] Figure 1A is a perspective view of the connector as seen from the second end (connector connection end).

[0343] Figure 2 is from Figure 1 A perspective view of the other end of the connector as seen.

[0344] Figure 2A is from Figure 1A A perspective view of the other end of the connector as seen.

[0345] Figure 2B Will Figure 1A and Figure 2A The connector is shown as part of an assembly with a catheter and another connector.

[0346] Figure 3 yes Figure 2 A side view of the connector, while Figure 4 is another side view in which the connector has been rotated through 90°.

[0347] Figures 5 to 7 Each is shown Figure 1 Different views of the interior of the second end of the connector.

[0348] Figure 8 It passes through Figure 1 The cross section of the c center or midline of the connector.

[0349] Fig. 9 is relative to Figure 8 Axial rotation Figure 1 Another cross section of the connector.

[0350] Fig.10 is relative to Figure 8 and Fig. 9 Axial rotation Figure 1 Another cross section of a connector.

[0351] Fig.11 yes Figure 1 Alternative Embodiments of Connectors A perspective view of a connector.

[0352] Fig.12 , Fig.13 , Fig.14 and Fig.16 yes Fig.11 Different views of the second end of the connector.

[0353] Fig.15 and Fig.17 Shown with Fig.14 and Fig.16 The same view, but with respect to FIGS. 1A and Figure 2A In terms of connectors.

[0354] Fig.18 It passes through Fig.11 A cross section of a connector showing internal features.

[0355] Fig.19 It passes through Fig.11 Another cross-sectional view of the connector.

[0356] Fig. 20 It passes through Figure 1A and Figure 2A Cross-sectional view of the connector.

[0357] Figure 21 to Figure 23 Shows Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.16 and Fig.19 The connector is connected to another connector (which is Figure 28 to Figure 29 The order in which the connectors shown are connected or engaged.

[0358] Fig.24 Shown by Figure 21 to Figure 23 A perspective view of the engagement achieved by the connector is shown.

[0359] Fig.25 Shows that when Figure 21 to Figure 23 A cross section of the joined interconnecting features as shown in the implementation.

[0360] Figure 26 to Figure 27 A known connector having a male connection feature in the form of a pair of locking fingers is shown. Figure 21 to Figure 23 A similar approach to that shown Figure 1 to engage the connector.

[0361] Fig.28 It passes through Figure 21 to Figure 23 Cross section of the left hand end connector of the connector arrangement shown.

[0362] Fig.28A A perspective view of the connector is shown.

[0363] Figure 28B1 Shows Fig.28A Side view of the connector.

[0364] Figure 28B2 Shows Fig.28A Top view of the connector.

[0365] Fig.28C Shows the connection to FIG. 28A to FIG. 28B2 lanyard for the connector.

[0366] Fig.28D Shows FIG. 28A to FIG. 28B2 An assembly of a connector and a patient interface with an optional lanyard attached and such as a tracheostomy interface.

[0367] Fig.28E shows a patient interface connected to a nasal cannula FIG. 28A to FIG. 28B2 The connector assembly.

[0368] Fig.28F Shows FIG. 28A to FIG. 28B2 An assembly of a connector and a lanyard connected to the connector.

[0369] Fig.29 yes Fig.28 External perspective view of the connector.

[0370] Fig.29A and Fig.29B yes Fig.29 A close up view of the area circled as 'A' or 'B' item.

[0371] Fig.30 is a cross section of another connector embodiment, additionally showing a swivel type arrangement in combination with a cuff arrangement.

[0372] Fig.31 yes Fig.30 External perspective view of the connector.

[0373] Fig.32 Specifically shown is a flange or lip with Figure 28 to Figure 29 The male connection feature of the connector shown achieves the connection.

[0374] Fig.33A shows how a connector body on which a cuff may be used may include slots or other recesses for receiving splines or other protrusions of the cuff, while Fig.33B The envelope is shown to be placed on the body.

[0375] Fig.34A is another connector embodiment shown in perspective view, and Fig.34B and FIG. 34C is Fig.34A Different end perspective views of the envelope are shown.

[0376] Fig.35 It passes through Fig.34A A cross-section of the center or midline of a connector, showing the internal portions, including the rotary type connector components.

[0377] Fig.35A is a perspective view of the connector. Fig.35B yes Fig.35A The cross section of the connector.

[0378] Fig.36 is a perspective view of the connector.

[0379] Fig.36A yes Fig.36 End view of the connector.

[0380] Fig.36 is a perspective view of the connector.

[0381] Fig.36A yes Fig.36A End view of the connector

[0382] Fig.37 The connector is shown engaged with a second connector. Fig.37A Shows Fig.37 cross section.

[0383] Fig.38 The connector is shown engaged with a second connector. Fig.38A Shows Fig.38 cross section.

[0384] Fig.39 The connector is shown engaged with a second connector. Fig.39A Shows Fig.39 cross section.

[0385] Fig.40 The connector is shown engaged with a second connector. Fig.40A Shows Fig.40 cross section.

[0386] Fig.41The connector is shown engaged with a second connector. Fig.41A Shows Fig.41 cross section.

[0387] Fig.42 The connector is shown engaged with a second connector. Fig.42A Shows Fig.42 cross section.

[0388] Fig.43 The engagement between the connector and a second connector is shown. DETAILED DESCRIPTION

[0389] Providing new and different connectors, specifically focusing on improving usability and proper alignment of connectors to be connected together, can improve patient safety in successfully maintaining gas therapy delivery (such as delivery of humidified or other gases to a patient).

[0390] Reference Figures 1 to 20 A connector 1 is provided which is to be arranged at the terminal end of a breathing catheter (indicated by C in the figure). The breathing catheter may be a medical breathing catheter. The connector 1 comprises a body 4 having a first end 5 and a second end 6. The body 4 itself internally defines an inner cavity 7 for allowing gas to pass between each of the first end 5 and the second end 6. It will be understood that, depending on the gas flow through the inner cavity, when placed in a breathing circuit, the ends 5, 6 of the connector 1 can each be considered to be upstream or downstream of the other end, for example, the direction of the gas flow will determine whether the end 5 is fluidly upstream or downstream of the other end 6.

[0391] In use, the first end 5 is engaged or engageable with a terminal end of the breathing conduit 3 or at least one component associated with a terminal end of the breathing tube.

[0392] In use, the second end 6 of the connector 1 is engaged or can be engaged with another connector. For example, in various preferred embodiments, the second end 6 of the connector 1 can be engaged with an appropriately configured end of another connector. Other connectors of appropriate configuration as shown in this article are shown by the following:

[0393] - The second end 52 of the connector 200 (see e.g. Figure 21 to Figure 25 ),

[0394] - The second end 100 of the connector 80 (eg Fig.26 , Fig. 27), which provides a pair of male connection fingers 53 in the form of a pair of locking fingers 54 (such a connector 80 is already known from PCT / NZ 2012 / 000142, which was published as WO 2013 / 022356 to co-applicant Fisher & Paykel Healthcare Limited, the contents of which are incorporated herein),

[0395] - The second end 5 of the connector 40 (eg Fig.30 , Fig.31 shown).

[0396] The inner surface 8 of the body includes one or more internal connection features 9 configured to connect with another connector to be received internally in use.

[0397] The outer surface 10 of the body 4 includes one or more external alignment features 11, which are configured to align the connector or another connection to form an externally aligned connection therebetween. Alternatively or in addition, there may be one or more external visual aids, at least a portion of which may form an item indicated as 12, which is configured to provide an externally visible guide for aligning the connector 1 or another connector to form an aligned connection therebetween (e.g., a groove or cutout 57 of the connectors labeled 200, 40). Such visual aids may also be configured to provide dual functionality as an alignment feature. For example, the visual aid may have sufficient volume or tapered size to transition from being a visual aid to being an alignment feature itself.

[0398] The one or more connection features 9 are surface features that extend radially inward from the inner surface 8 of the inner sidewall of the body 4 .

[0399] The one or more internal connection features 9 may be one or more tabs, where a tab is a raised protrusion extending from the inner surface 8 .

[0400] In particular embodiments, the connection features 9 may be oriented to be radially aligned with corresponding external alignment features 11 and / or corresponding external visual aids 12 .

[0401] Although the figures show a pair of connection features 9 , it will be appreciated that further connection features may be provided about the inner surface 8 .

[0402] To facilitate relatively easy assembly, at least one of the connection features 9 may include a longitudinally extending channel or groove 13, or the connection feature may be subdivided into two or more parts to allow for such a channel or groove 13 (or slot). Such a channel or groove 13 is configured to locate, hold or seat a printed circuit board (PCB) arrangement (not shown) that can be inserted into such a slot. It will also be understood that the channel or groove 13 (or slot) may be provided at other locations around the inner surface 8.

[0403] To facilitate easy and improved or correct connection with another connector using the connection feature 9, the inner surface 8 may include one or more internal alignment features 14. Such internal alignment features are configured to align the connection features of another connector (e.g., one or more male locking fingers that may extend into the interior space of the body 4) placed in contact therewith, for example, when the connector feature of the other connector is inserted into the body 4 at the second end or received inside the body. In this mode, the connection feature of the other connector is oriented (such as by rotation) to be in 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, which are configured to rotatably orient the male connection feature of another connector to an aligned connection orientation when in use so as to connect with the connector, or at least to be oriented to connect with one or more of the internal connection features 9 located on or around the inner surface of the body 4 or the inner surface 8.

[0404] It will be appreciated that the internal alignment feature 9 may be a surface feature extending in a radially inward direction from the surface of the internal sidewall or inner surface 8 of the body 4. The internal alignment feature may be in the form of one or more tabs, wherein the tabs are advantageously raised protrusions.

[0405] Each tab may be shaped to provide a pair of shoulders, each shoulder away from each other and away from an end (e.g., a tip or rounded tip, or a flat or curved surface such as Figure 1A , Figure 2A , Fig.17 , Fig. 20 The end of the shoulder is generally more positioned toward the terminal end of the second end of the connector. In this way, the tab can guide or encourage the male connection feature in contact with the shoulder to slide down the slope of each shoulder and thus be automatically rotated.

[0406] In an alternative, the internal alignment feature 14 may be one or more ribs extending substantially in the longitudinal direction of the connector 1 and along the inner surface 8. Optionally, there may be any number of ribs, but for example there may be: 1 to 10 ribs, or 2 to 8 ribs, or 4 to 6 ribs, or 2 ribs, or 3 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs. Specifically, there may be two groups of such ribs, each group comprising 3 such ribs.

[0407] There may also be two or more sets of internal alignment features 14 provided on or about the inner surface 8 of the body 4, but most advantageously there may be two sets of such alignment features (which may be generally circumferentially opposed).

[0408] Where a set of internal alignment features 14 are to be provided, each set may have an equal (ie the same) number of such internal alignment features as the other set.

[0409] In a preferred embodiment, there is a pair of internal alignment features 14, which, when used, rotatably align a pair of fingers (i.e., male locking fingers) extending from another connector when the pair of fingers are inserted into the inner surface of connector 1 or placed in engagement or surface contact with the inner surface.

[0410] As previously discussed, the first end 5 is configured to engage with a terminal end of a breathing catheter. This first end may include a sleeve portion 15 to be attached to the terminal end of the breathing catheter, with which a suitable connection, such as a pneumatic connection, may be made. At least a portion of the sleeve portion 15 is configured to be inserted into or positioned or received in the inner surface of the lumen of the terminal end of the breathing catheter (i.e., making an internal connection), or alternatively, the sleeve portion may be received or positioned or received on the outer surface of the terminal end of the breathing catheter (i.e., making an external connection).

[0411] Turning to the external alignment features 11 and / or external visual aids 12, these may be external surface features extending radially outwardly from the outer surface 10 of the outer sidewall of the body 4. For example, these features may be in the form of tabs or raised protrusions.

[0412] In one configuration, the external alignment feature 11 or visual aid 12 may include one or more ribs extending substantially in the longitudinal direction of the connector and along the outer surface 10 of the body 4. For example, there may be any number of ribs, but particularly preferred may be: 1 to 10 ribs, or 2 to 8 ribs, or 4 to 6 ribs, or 2 ribs, or 4 ribs, or 6 ribs, or 8 ribs, or 10 ribs.

[0413] Figure 1Aand Figure 2A An alternative configuration of an external visual aid 12 of a connector is shown. The external visual aid 12 includes a raised protrusion having an end 12A (e.g., a top or rounded top, or a flat or curved surface) and a pair of shoulders 12B. The shoulders 12B are arranged to be inclined away from each other and away from the ends at the intersection of the shoulders. The end 12A is positioned toward the second end 6 of the connector, and the shoulders are positioned closer to the first end 5 of the connector (compared to the second end 6), for example, near the flange or lip 16.

[0414] Alternatively, the external visual aid 12 may be substantially tongue-shaped, and / or substantially triangular-shaped and / or substantially tapered towards the ends.

[0415] Figure 2B An assembly is shown including connector 1, catheter C, and another connector 258. For example, another connector 258 may be a connector as described in USSN 62 / 252149 and / or USSN 10 / 452,448 (U.S. Pat. No. 6953354) to co-applicant Fisher & Paykel Healthcare, Inc., the contents of which are incorporated herein.

[0416] Fig.15 and Fig.17 Shows Figure 1A and Figure 2A End view of the connector. Fig. 20 Shows Figure 1A and Figure 2A The cross section of the connector.

[0417] The external alignment features (and / or visual aids) may be evenly or equidistantly spaced, arranged or disposed from one another around a circumference or radius of the exterior surface 10 .

[0418] In another configuration, the external alignment feature 11 and / or visual aid 12 can be a protrusion of a certain length extending in a substantially longitudinal direction of the connector and along the outer surface 10, wherein the height of the protrusion from the outer surface varies along its length. For example, the height of the external alignment feature and / or visual aid can taper along this length.

[0419] In the case of providing a taper, the height of the protrusion can also be tapered, so that the height:

[0420] a. decreases in a direction extending from the base of the external alignment feature toward the terminal end of the second end of the connector, or

[0421] b. Increases in a direction extending from the base of the external alignment feature toward the terminal end of the second end of the connector.

[0422] Figure 3 In particular, a tapered arrangement matching that in a) above is shown (ie a taper that decreases in height as the protrusion progresses towards the terminal end of the second end 6).

[0423] In other configurations, a stepped protrusion is provided substantially at or towards the base of one or each external alignment feature, which may form an external alignment feature marked in the drawings as item 11. A stepped protrusion is a projection that extends radially outwardly further than adjacent portions of an external alignment feature.

[0424] The stepped protrusion can be configured to co-locate or provide for co-location of a portion of a suitable shape that can be keyed thereto. The stepped protrusion allows keying with a groove or cutout of a complementary shape of at least a portion of a sleeve portion of another connector when in contact with the groove or cutout to achieve connection between the connector 1 and the other connector.

[0425] In an alternative, a groove or cutout is provided substantially at or towards the base of one or each external alignment feature, the groove or cutout being configured to receive a protrusion or projection of a complementary shaped portion of another connector. This arrangement allows for complementary types of keying as mentioned above. In this case, the groove or cutout may be configured to co-locate or co-locatable to key with a complementary protrusion or projection of at least a portion of a sleeve portion of another connector. Such a groove or cutout effectively acts as a keyway for a key, which may be carried on the keyway.

[0426] Keys or keyways of different shapes or profiles may be used. It will be appreciated that any suitable shape may be employed, but particularly preferred shapes or profiles include: semicircular, triangular, rectangular or other rectilinear or geometric shapes, elliptical, wedge-shaped.

[0427] The connector 1 may also include a radially extending flange or lip 16 that projects outwardly from or away from the outer surface 10 of the body 4 .

[0428] When manufactured together with the outer surface 10 of the connector 1, such a flange or lip 16 can effectively define a stop end for the maximum engagement point or length of another connector. Optionally, the flange or lip can also provide a sealing surface on which another connector can essentially form a pneumatic connection.

[0429] The flange or lip 16 may additionally 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 raised regions 19a.

[0430] The flange or lip 16 may also extend longitudinally sufficiently so as to be configured to engage with a terminal end of a breathing catheter or a component associated with the terminal end of a breathing catheter.

[0431] The external alignment feature 11 of connector 1 can be formed or constructed to prevent the internal connection feature 9 of the connector from connecting to another connector (e.g., connector 40) when the external alignment feature of connector 1 and the external alignment feature of another connector (e.g., connector 40) are in a misaligned orientation.

[0432] Additionally or alternatively, the external alignment feature 11 of connector 1 can be shaped or constructed to allow the internal connection feature 9 of the connector to connect to another connector (e.g., connector 40) when the external alignment feature 11 of connector 1 and the external alignment feature of another connector (e.g., connector 41) are in an aligned orientation.

[0433] Optionally, a sheath 17 (such as an overmould) may surround or provide a joint (whether aerodynamic or not) around the outer surface of the body 4. Such a sheath 17 may be used with one or more radially and / or longitudinally recessed or slotted regions 18b, and / or one or more radially and / or longitudinally extending raised regions 19b.

[0434] The various recessed or slotted areas 18b of the sheath and / or the extended raised areas 19b may be fully or at least partially aligned with the recessed or slotted areas 18a of the flange or lip 16 and / or the extended raised areas 19a.

[0435] In other configurations, the interior surface 8 of the body 4 can provide for positioning, holding or placing a printed circuit board (PCB) arrangement toward the second end 6 of the connector 1. For example, the PCB can be provided on a relatively planar board and can be inserted into the body 4. The PCB can be used for different reasons and in some specific configurations of facility circuits can be used to: control, sense (e.g., temperature, humidity, flow rate), heat (e.g., heat wires), or other electronic components for a breathing tube to be used as part of a breathing circuit.

[0436] The connector 1 may provide for a sealing surface on which a separate connection to a separate other connector may be made.

[0437] In the first sealing mode, the connector 1 may be configured to provide a first separation surface for sealing when it is separately connected via another connector, the first surface being defined by one or both of the following:

[0438] - a side wall surface 20 of a radially extending flange or lip 16 projecting from the outer surface 10 of the body 4, the side wall 20 facing the terminal end face of another connector which may be substantially carried on the side wall 20, or

[0439] - inner surface 8, when connector 1 bears on a radially outwardly facing surface of another connector, such as radially outwardly facing surface 160 of another connector (see for example Fig.29B ) on, the inner surface is substantially at or toward the terminal end of the second end of the connector.

[0440] For example, when the connector 1 is configured to be in a first sealing mode (in which the surface for sealing is at least partially provided by the side wall surface 20), this first sealing mode will require removing or avoiding providing grooves extending radially and / or longitudinally at least from the flange or lip 16 and optionally also from the sleeve (or sleeve) 17.

[0441] In the second sealing mode, the connector 1 may be configured to provide a body of the second end for sealing on a second sealing surface of another connector 200, the second sealing surface being defined by:

[0442] - an inner side wall surface 60 disposed substantially at or towards the bottom end 64 of the second end of the other connector 200, the body of the second end of the connector 1 being substantially supported on or along the inner side wall surface at a position located at or towards the bottom end of the other connector 200. For example, see Fig.29B Item 180 in .

[0443] In the third sealing mode, the connector 1 may be configured to provide a body of the second end for sealing on a third sealing surface of another connector 200, the third sealing surface being defined by:

[0444] - an inner side wall surface 60 of the projection 60A, which extends radially inwardly from the inner side wall surface 60 of the second end 52 of the other connector 200 when the body of the second end of the connector 1 is substantially carried on or along the surface of the projection 60A of the other connector 200. For example, see Fig.29A Item 140 in .

[0445] In the fourth sealing mode, the connector 1 is configured to provide a body of the second end for sealing on a fourth sealing surface of another connector 200, the fourth sealing surface being defined by:

[0446] - an inner side wall surface 60 of the second end 52 of another connector 200, wherein the inner side wall surface extends radially outwardly from one or more male connection features (such as one or more locking fingers 54) as a shoulder 63, and a portion of the body of the second end of the connector 1 is substantially carried on the radially outward surface of the shoulder. For example, see Fig.29B Item 170 in .

[0447] In the fifth sealing mode, the connector 1 is configured to provide a body of the second end for sealing on a fifth sealing surface of another connector 200, the fifth sealing surface being defined by:

[0448] - A radially outward surface of one or more male connection features, in particular, a radially outward surface of one or more locking fingers located within the second end 52 of the other connector 200. See, for example, Fig.29B Item 160 in .

[0449] In the sixth sealing mode, the connector 1 is configured to provide a body of the second end for sealing on a sixth sealing surface of another connector 200, the sixth sealing surface being defined by one or both of the following:

[0450] - A shoulder or lug extending radially outwardly from one or more male connection features, in particular, a shoulder or lug extending radially outwardly from one or more locking fingers located within the second end 52 of the other connector 200, e.g., see Fig.29A Item 150 in, or

[0451] - A side or base extending as a platform between the outward periphery of the shoulder extending radially outward from one or more male connection features of the other connector 200, which side or base extends as a platform located within the second end of the other connector 200, e.g., see Fig.29A Item 130 in .

[0452] The connector 1 as described herein is particularly suitable for use as an upstream connector component that is attached to the terminal end of a breathing tube that supplies gas to a patient interface. The connector 1 is capable of operating as both a female and male connector, thereby improving the usability and ability to connect to other types of connectors (where these other connectors provide for either male or female connection features).

[0453] The connector 1 may be particularly suitable as a connector for a breathing conduit that provides a gas supply from a source. The aforementioned "another connector" may be, but is not limited to, a downstream patient interface end connector of a breathing conduit that provides the supplied gas to a patient interface (such as, but not limited to, a full-face mask, a nasal cannula, an oronasal mask, a nasal mask, regardless of whether each of these is a sealing type or a non-sealing type).

[0454] Figure 21 to Figure 25 The connection made by connector 200 to connector 1 is shown.

[0455] Also disclosed is another connector (as described above) or a second connector configured to engage or be engageable with the connector. The other connector may be mated and / or connected and sealed with at least one of the following surfaces of the connector 1:

[0456] at least one outer surface 10 of the body 4;

[0457] At least one side wall of a radially extending flange or lip. For example, another connector may seal with a side wall 20 of a radially extending flange or lip 16 protruding from the outer surface 10 of the body 4.

[0458] At least the outer surface of a cuff or sleeve 17 is provided around the first end of the connector 1 .

[0459] Fig.36 and Fig.36A A connector is disclosed that is to be coupled or mated with a second connector (eg, connector 1) in a sealing arrangement. This connector 220 may be another connector as described above.

[0460] The connector 220 may be provided at a terminal end of the breathing conduit C. Alternatively or additionally, the connector 220 may form part of an adapter which may facilitate the connection of two connectors, ie the connection of the connector 1 with any other connector.

[0461] The connector has a body 201, which includes a first end 202 and a second end 203. The first end 202 is engaged or can be engaged with a terminal end of a breathing conduit C or at least one component associated with a terminal end of a breathing conduit or a breathing tube (e.g., an adapter as described above). The second end 203 of the connector 220 is engaged or can be engaged with a second connector or another connector (e.g., connector 1). The connector 220 includes an internal lumen or passageway to receive a second connection internally.

[0462] The inner surface of the body 201 may include one or more internal connection features and / or alignment features 210, 211, 212. The internal connection features and / or alignment features 210, 211, 212 may facilitate sealing (pneumatic or other sealing) and / or alignment of the connector and the second connector when the connector is connected to a second connector (e.g., connector 1) or during the connection process. The internal connection features and / or alignment features 210, 211, 212 may also provide for visual alignment indications, so that the user can more easily align and connect the connector 220 with the second connector. When connected to the second connector, the internal connection features and / or alignment features may also provide for holding the connector 220 with the second connector together.

[0463] The internal connection features and / or alignment features 210, 211, 212 may include ribs or protrusions 211 protruding radially inward from the body 201 of the connector 220 or from an imaginary or actual inner wall or inner surface of the body 201. The protrusions or ribs 211 may extend in a substantially longitudinal direction along the sidewalls of the inner surface of the body 201 of the connector 220. The protrusions or ribs 211 may extend substantially from the second end 203 (e.g., the terminal end of the second end of the connector) at or near the first end 202 of the connector 220.

[0464] The internal connection features and / or alignment features 210, 211, 212 may include grooves 210, 212 that protrude radially outward from an imaginary or actual inner wall or surface. At least one groove 210, 212 may be located in a side wall or inner surface of the connector body 201. In some embodiments, when a second connector is mated or connected to the connector 220, at least one groove may be configured to accommodate an associated protrusion of the second connector (e.g., protrusion 11 of connector 1).

[0465] The internal connection features and / or alignment features 210, 211, 212 can at least partially provide a seal or sealing surface between the connector and another connector. For example, the internal connection features and / or alignment features 210, 211, 212 themselves or in combination with the inner surface of the body of the connector can be sealed with a second connector (e.g., connector 1).

[0466] The internal connection features and / or alignment features 210, 211, 212 can be shaped to mate with corresponding features of the second connector. The rib 211 of the connector can be configured to mate with a corresponding groove (e.g., longitudinal recessed or slotted area 18b of connector 1 of sleeve or sleeve 17) of the second connector (e.g., connector 1). The grooves 210, 212 can be configured to mate with corresponding ribs or protrusions (e.g., visual alignment features 12 or protrusions 16) of the second connector.

[0467] The internal connection features and / or alignment features 210, 211, 212 can be co-located or co-locatable to key with a complementary shaped protrusion or groove of a portion of the second connector. This can be a mechanism to provide an alignment function between the connector 220 and the second connector. The internal connection features and / or alignment features 210, 211, 212 can be shaped to facilitate the correct connection orientation so that when the connector 220 is in contact with the second connector, the connectors are aligned to ensure that the internal connection features and / or alignment features 210, 211, 212 are aligned with corresponding ribs or protrusions and / or grooves on the second connector. When in the connected state, the keying can also prevent the components from rotating relative to each other.

[0468] The internal connection features and / or alignment features 210, 211, 212 may be arranged circumferentially around the inner surface of the connector. The internal connection features and / or alignment features 210, 211, 212 (e.g., ribs and / or protrusions) may be equally spaced around the circumference of the inner surface of the body 201 of the connector 220. Alternatively, the internal connection features and / or alignment features 210, 211, 212 may be arranged such that they are not equidistant (i.e., asymmetrical about a plane), which may only allow connection between the connector 220 and a second connector in a specific orientation.

[0469] There may be one or more or more internal connection features and / or alignment features 210, 211, 212 (ribs and / or grooves), optionally 2 or 3 or 4 or 5 or 6 ribs and / or grooves. Fig.36 In the embodiment shown, there are four ribs 211 .

[0470] There may be a pair of grooves 210, 212. The pair of grooves 210, 212 may be positioned so that they are equally spaced around the circumference of the inner surface of the body 201 of the connector 220. Alternatively, the grooves 210, 212, 212 may be arranged so that they are not equally spaced (i.e., asymmetrical about a plane). The grooves 210, 212 may be arranged to overlap so that one groove fits at least partially within the other groove, or one groove is at least partially defined by the other groove.

[0471] The inner surface of the body 201 of the connector 220 may include at least one sealing surface or surface for sealing. For convenience and clarity, the sealing surfaces mentioned herein are labeled as the first sealing surface, the second sealing surface, and the third sealing surface. However, it will be understood that the connector may include, for example, the third sealing surface or the second sealing surface without necessarily including the first sealing surface. It should be clear that including a specifically numbered sealing surface does not require including a previously numbered sealing surface.

[0472] When connected or mated through or with the second connector, the connector 220 can provide at least a first inner surface for sealing on an outer portion of the second connector. The first inner surface is provided by a circumferential portion of the inner surface of the body 201. The circumferential portion can be located at or near the second end 203 of the body 201 of the connector 220. The first sealing surface can be arranged to be substantially continuous and substantially circumferentially positionable around an outer portion of the second connector (e.g., a sleeve or sleeve 17 of the connector 1).

[0473] Figures 37 to 40A An example of a connector 220 that is sealed to a second connector (ie, connector 1) via at least a first internal sealing surface is shown.

[0474] The internal connection features and / or alignment features 210, 211, 212 may form at least a portion of the first inner surface of the body. The grooves and / or ribs or protrusions may form at least a portion of the first inner surface. The protrusions or ribs 211 may extend along the inner surface of the body 201 of the connector 220 in a substantially longitudinal direction. Optionally, the protrusions or ribs 211 may extend substantially from 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 or near the extension. It will be understood that the ribs and / or protrusions 211 of the connector 1 may only partially extend into or along the channel 18b.

[0475] When viewed in cross section (e.g. Fig.37A , Fig.38A , Fig.39A and Fig.40A ), the first inner surface of the body 201 of the connector 220 can be substantially curved. Additionally or alternatively, the profile of the first inner surface (e.g., the radius of curvature and the bend position of the first inner surface) can match the outer profile (e.g., the outer curve or curvature) of the sleeve or sleeve 17 of the second connector. The profile of the first inner surface can allow a seal between the first inner surface and the sleeve or sleeve 17 of the second connector. Figures 37 to 40AIt is shown that the first inner surface is shaped to match the contour of a cuff or sleeve 17 of a second connector (eg, connector 1).

[0476] Figures 37 to 40A A series of embodiments of connector 220 are shown in which ribs or projections 211 extend into grooves or longitudinal channels 18b of sleeve 17 .

[0477] Fig.37 A connector 220 is shown in which the first inner surface and the ribs or protrusions 211 extend to or substantially near the end of the sleeve or sleeve 17 of the connector 1. FIG. 37A shows a cross section of the connector 220 in complete connection with the second connector (i.e., connector 1). It is also contemplated that the first inner surface can extend beyond the end of the sleeve or sleeve 17 of the connector 1.

[0478] Fig.38 A connector 220 is shown in which the first inner surface and rib or protrusion 211 extend to a position between the outermost top of the outer contour of the sleeve or sleeve 17 of the second connector 1 and the end of the sleeve or sleeve 17 closest to the terminal end of the second connector (which is connected to the conduit C). Fig.38A A cross section of connector 220 is shown having completed connection with a second connector (ie, connector 1).

[0479] exist Figures 37 to 38A In an embodiment, the connector 220 can be made of a soft rubber material so that the second end of the connector can extend above the top end of the sleeve 17. Fig.39 arrive Fig.42A The embodiments may also be made of soft rubber material.

[0480] In embodiments where the connector does not extend beyond the maximum diameter of the cuff (e.g., Fig.39 arrive Fig.42A ) in which the connector can be made of a rigid material.

[0481] Fig.39 A connector 220 is shown in which the first inner surface and rib or projection 211 are of sufficient size to extend substantially to the outermost top end of the outer contour defined by the sleeve 17 of the connector 1 when in use.

[0482] Fig.40 A connector 220 is shown in which the first inner surface and rib or protrusion 211 extend to a position between the outermost top of the outer contour of the sleeve or sleeve 17 of the second connector 1 and the end of the sleeve or sleeve 17 closest to the end of the second connector 1 not connected to the conduit C. Fig.40AA cross section of connector 220 is shown having completed connection with a second connector (ie, connector 1).

[0483] The connector 220 may provide a second inner surface for sealing when connected or mated with the other connector or with the other connector. The second surface is formed by a substantially radially extending flange or lip 204 (e.g., Fig.36 and Fig.36A The flange or lip 204 protrudes radially inward from the inner surface of the body as the side wall surface. The flange or lip 204 can provide a surface on which the corresponding surface of the second connector (e.g., flange or lip 12, or terminal) seals.

[0484] The radially extending flange or lip 204 may include at least one of the internal connection features or alignment features. The at least one connection feature or alignment feature may be a rib or protrusion, or a groove. The at least one groove may be located in the flange or lip 204, or may be a depression or other surface relief feature provided on the face of the flange or lip 204. Optionally, the depression or other surface relief feature is a cutout of the face.

[0485] The internal connection features and / or alignment features may be co-located or co-locatable to key with a complementary shaped protrusion or recess of a portion of the second connector. Fig.37 41A , connector 220 may include ribs 211 that are co-locatable with grooves 18a of connector 1. Connector 220 may also include at least one groove 210 in flange or lip 204 that is co-locatable with ribs or protrusions 11 of a second connector (i.e., connector 1).

[0486] When the second connector is mated or connected with the second inner surface, the groove can be configured to accommodate or receive an associated protrusion or other shaped feature of the second connector. At least one protrusion can be located in the side wall or inner surface of the connector, and the at least one protrusion is used to adapt to the groove of the other connector.

[0487] The face of the flange or lip 24 can be configured to provide a substantially planar surface with which a portion or surface of the second connector can mate or engage. The face can be oriented to substantially face the second end 203 of the connector 220. The face can mate or seal against a side wall or lug or lip or base or end of the second connector. When the second connector is connector 1, the face can seal against a corresponding face of the flange or lip 16 of connector 1.

[0488] The connector may also provide at least a third inner surface for sealing against an outer portion of the second connector when connected or mated with the second connector. The third inner surface is provided by a circumferential portion of the inner surface of the body, optionally located at or near the first end of the body of the connector and arranged to be substantially continuous and substantially circumferentially positionable around an outer portion of the other connector with which the third inner surface is to be connected or formed into a mating arrangement.

[0489] When connected or mated through or with the second connector, the connector 220 can provide at least a third inner surface for sealing on the outer portion of the second connector. The third inner surface is provided by a circumferential portion of the inner surface of the body 201. The circumferential portion can be located at or near the first end 202 of the body 201 of the connector 220. Alternatively, in other embodiments (such as Figures 41 to 42A In the embodiment shown), the third inner surface is located near the second end 203 of the body 201. The first sealing surface can be configured to be substantially continuous and substantially circumferentially positionable around the outer portion of the second connector (e.g., the outer surface 10 of the body 4 of the connector 1).

[0490] The alignment feature or connection feature may form at least a portion of the third inner surface of the body. Figures 41 to 42A As shown, the groove 212 forms part of the third inner surface for sealing. At least one groove may be shaped to receive a protrusion of the second connector, for example, the visual indicator 12.

[0491] The groove may be configured to receive and seal at least a portion of the protrusion of the second connector. The remaining inner surface of the body of the connector 220 may then be sealed with at least a portion of the outer surface 10 of the body 4 of the second connector 1 .

[0492] The groove may include a pair of shoulders that slope away from each other and away from an end (e.g., a top end) located at the intersection of the shoulders. The end of the groove is positioned substantially more toward the first end of the connector 220 than the shoulder. At least one groove may be substantially tongue-shaped, and / or substantially triangular and / or substantially taper toward the end. The groove may extend only partially into the body of the connector 220 (e.g., Fig.42 As shown in FIG. 1 , when the connector 220 is connected to the second connector 1 , the body 201 of the connector 220 may only partially extend onto the second connector 1 .

[0493] Alternatively or additionally, the groove may be a longitudinal channel (e.g., to accommodate Figure 1Rib 12)

[0494] Figures 42 to 42A A connector 220 is shown which is at least partially sealed to a second connector (i.e., connector 1) via a third sealing surface. Figures 42 to 42A In the embodiment, the connector 220 is sealed with a portion of the outer surface 10 of the body 4 of the second connector 1 (including a portion of the rib or protrusion 12).

[0495] Fig.43 The connection of connector 220 to a second connector (e.g., connector 1) is shown. Second connector 1 is inserted into connector 220 so that external alignment features 11 or visual aids 12 mate and optionally seal with their corresponding internal connection features / alignment features 210, 212. When the connectors are mated together, recessed or grooved areas 18B mate with ribs 211 (and optionally seal).

[0496] It will be appreciated that the connector may include any combination of the first sealing surface, the second sealing surface, and the third sealing surface as described above.

[0497] It will also be understood that the second connector may be such as Figure 37 to Figure 41 As shown in the single piece, or can be made of Fig.42 and Fig.42A The connector is made of the multiple pieces shown in (and with reference to the connector 1 described above).

[0498] Notwithstanding the above description, other connectors 200 and 40 may be provided that are operationally compatible with connector 1. Figure 21 to Figure 25 and Figures 28 to 35B Connectors 200 and 40 are provided as shown.

[0499] Thus, a connector 200, 40 is provided for use with a catheter to supply gas to a user.

[0500] The connector 200, 40 is arranged at the terminal of the breathing tube. The connector 200, 40 includes a body 50, the body includes a first end 51 and a second end 52, and the body 50 defines an inner cavity 53 inside, the inner cavity is used to allow gas to pass between each of the first end and the second end. When in use, the first end 51 is engaged with the terminal of the breathing tube or at least one component associated with the terminal of the breathing tube or can be engaged with them. The connector 200 can be connected to the terminal of the breathing tube by a rotating connector connected to the body of the connector. When in use, the second end 52 is engaged with another connector (such as the connector of item 1 previously described herein) or can be engaged with it. The inner surface of the body includes one or more internal convex connection features 53 extending therein, and the internal convex connection feature is configured to connect to a concave end or concave portion of another connector that can receive the convex connection feature 53. The internal convex connection feature 53 includes one or more (optionally, a pair) locking finger-shaped pieces 54. The connector 200, 40 includes one or both of the following:

[0501] a. One or more internal male connection features 53 are surrounded by an outer wall 55, the outer surface 56 of which is tapered, gradually becoming smaller in the substantially longitudinal direction of the connector (see, for example, a tapered arrangement). Fig.30 ),

[0502] b. One or more internal male connection features 53 are surrounded by an outer wall 55, the outer surface of which, or at least the outer surface 56, includes: one or more external alignment features 57, which are configured to align the connector 40 or another connector to form an externally aligned connection therebetween; and / or one or more external visual aids configured to provide externally visible guides for aligning the connector or another connector to form an aligned connection therebetween when in use (e.g., see Figure 1 for an illustration of such an arrangement). Figure 28 to Figure 29 ).

[0503] In some embodiments, the first end of connector 51 includes a flared sleeve portion. The flared portion allows the connected breathing tube to move relative to connector 40 so that the breathing tube can flex and bend without damaging the connector. Additionally, the flared sleeve portion also allows the user to better grip the connector for easier connection and disconnection with other connectors.

[0504] The connector may include at least one securing feature 231 . Fig.28AAn embodiment of connector 200 is shown in which securing member 231 is formed by a recessed area 232 and a bridge portion 234. Bridge portion 234 allows for the connection of a lanyard (or a portion of a lanyard) to be secured to connector 200. Other structural features (which form securing feature 231) are contemplated for attaching a lanyard to connector 200, such as an integral loop or clamp.

[0505] Figure 28B1 Shows Fig.28A The connector 200 is a side view of the connector 200. The connector 200 may include a pair of fixing features 231 (although only a single fixing feature 231 is shown in the side view of the connector 200, and the second fixing feature 231 is not visible from the view), and they may be arranged equidistantly around the periphery of the connector 200, for example. Figure 28B2 The embodiment includes a pair of fixing systems 231. Fig.28A The pair of fastening systems 231 are positioned in an opposite manner such that the fastening systems 231 are located on opposite sides of the connector 200. The lanyard 240 may be connected to one or both of these fastening systems 231.

[0506] Fig.28C A lanyard 240 is shown secured or engaged with the securing feature 231 of the connector 200. The lanyard 240 includes a loop portion 241 that can be secured around the bridge 234 and then pulled upon itself to securely associate the lanyard 240 to the connector 200. The lanyard 240 can then be placed around the neck of a user or environmental feature to carry or support at least some of the weight of the connector 200, attached catheter, and / or interface.

[0507] Fig.28D The connector 200 is shown with an attached lanyard 240 (optional) and a patient interface such as a tracheostomy interface 250 via a catheter C. The tracheostomy interface is connected to a tracheostomy shield 253. For example, the tracheostomy shield 253 may be a shield as described in USSN 62 / 329,638 to co-applicant Fisher & Paykel Healthcare, Inc., the contents of which are incorporated herein.

[0508] Fig.28E The connector 200 is shown without a lanyard and connected to a patient interface (such as a nasal cannula 251) via a conduit C. An optional tube clamp TC may be utilized and disposed along the conduit C. The tube clamp TC may include features for attaching to items in the environment to help support the conduit C, the interface 251, or other portions of the breathing circuit. In this way, the weight of a portion of the breathing circuit that is close to the patient or user may be supported.

[0509] Fig.28F Connector 200 is shown having a lanyard 240 and connected to connector 252 via catheter C.

[0510] Accordingly, and for example with reference to Figure 30 to Figure 31 , a connector 40 for use with a conduit for supplying gas to a user is also provided. The connector includes a body 50, the body 50 including a first end 51 and a second end 52. The body 50 defines an inner cavity inside, the inner cavity is used to allow gas to pass between each of the first end and the second end. When in use, the first end 51 is engaged with or can be engaged with the terminal of a breathing conduit (such as a tube leading to a patient interface) or at least one component associated with the terminal of the breathing conduit. When in use, the second end 52 is engaged with or can be engaged with another connector. The outer surface of the body 50 includes a sleeve 65, the sleeve is at least substantially arranged around the first end 51 of the connector body 50 (optionally, at least partially overlapping a portion of the second end 52 of the connector body 50), the sleeve 65 is substantially longitudinally downward along at least a portion of the length of the breathing tube to be engaged or can be engaged with the first end 51, and wherein the sleeve is an elasticized material or elastic material, such as silicone or thermoplastic elastomer (TPE) type material.

[0511] The diameter of the outer wall 55 of the second end 52 is smallest at the terminal end 58 of the second end (ie, the outer diameter), and the (outer) diameter gradually increases in a direction extending away from the terminal end 58 of the second end 52 toward the first end 51 .

[0512] The one or more locking fingers 54 are substantially received within the second end 52 of the connector 200 , 40 .

[0513] 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.

[0514] The outer wall 55 is configured to provide one or more alignment features 57 and / or one or more external visual aids. The one or more alignment features 57 assist in aligning the outer wall with a complementary shaped feature on another connector. The external visual aid may include a graphic or other visual indicator to allow the user to properly align and position the alignment feature on the outer wall with the complementary feature of another connector, the complementary feature carried on the alignment feature 57.

[0515] In some configurations, one or more internal male connection features 53 are oriented to align radially with external alignment features 57 and / or external visual aids. Each of these provides a visual indicator and a physical aid in combination to ensure that one connector is properly aligned with another connector.

[0516] As shown in the various figures, but see for example Figure 24 to Figure 25 , Fig.30 Fig.31 The external alignment features 57 may be one or more cutouts at a terminal end 58 or end face of the outer wall 55 of the second end 52. The cutouts may be configured to be received by a substantially complementary shaped portion on the connector with which the outer wall will make contact.

[0517] The external alignment features 57 may be evenly or equidistantly spaced, arranged or disposed from one another around the circumference of the terminal end face of the outer wall of the second end.

[0518] The external alignment feature 57 is configured to be co-positioned or co-positionable so that during connection between the end face 58 of the second end 52 of the connector 200, 40 and another connector, the external alignment feature keys with the protrusion of a complementary shape when connected with the sleeve portion of the other connector.

[0519] External alignment features 57 of connector 40 may be shaped or configured to prevent internal connection features 53 of connector 40 from connecting to another connector (eg, connector 1 ) when the external alignment features of connector 40 and the external alignment features of another connector (eg, connector 1 ) are in a misaligned orientation.

[0520] Additionally or alternatively, the external alignment feature 57 of connector 40 can be shaped or constructed to allow the internal connection feature 53 of the connector to connect to another connector (e.g., connector 1) when the external alignment feature 57 of connector 40 and the external alignment feature of another connector (e.g., connector 1) are in an aligned orientation.

[0521] The locking fingers 54 may include a groove 61 on an outer surface of each finger 54. Such groove 61 provides for receiving or engaging an internal connection feature, such as a raised protrusion or tab, such as locking tab 14 of a connector (such as indicated as item 1). The groove 61 may be shaped to receive an internal connection feature (e.g., item 14) of another connector (e.g., the connector indicated herein as item 1).

[0522] The tip 62 of the locking finger may be of at least partially chamfered configuration, preferably to facilitate the locking finger 54 being received into engagement with a connection feature such as that enumerated at 14 .

[0523] Various shapes of alignment features 57 as cutouts may be provided, for example: semicircular, triangular, rectangular or other linear or geometric shapes, elliptical, wedge-shaped.

[0524] In various configurations, the outer wall 55 operates as a sleeve for forming a sleeve connection with another connector (whether male or female). In one embodiment, the outer wall is configured to function as a 22 mm male tapered connector for another connector including a female connection facility, and in another embodiment, the outer wall is a sleeve configured to function as a 22 mm female tapered connector for another connector including a male connection facility.

[0525] The connectors, or at least their bodies, may be formed from any medically suitable material, however polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS) or polypropylene (PP) are particularly preferred.

[0526] The inner surface of the second end 52 of the body may also include a protrusion that is used to engage (e.g., an interference fit) with a comparably shaped portion of another connector that will be received by or within the inner surface defined by the outer wall 55. For example, such a protrusion may extend radially outward from one or more locking fingers 54 or from a base 64 as a shoulder 63, which extends from the inner surface of the outer wall 55 as a platform. The shoulder may optionally also extend longitudinally in a direction toward the open end of the second end of the connector. Or, alternatively or additionally, the inner surface of the outer wall may include a radially inward extending protrusion 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 inward extending protrusion 60a, and the size and shape of this space is set to receive the terminal end of another connector, such as a lip or flange portion of another connector. The terminal end of the other connector can be received in the space as an interference fit between the outward surface of the shoulder and the inner surface of the outer wall or the protrusion 60a. For example, see Fig.32 , which shows an assembly of a lip or flange (or shoulder) 91 of another connector 90 that can form such an interference fit with a connector (such as connector 200 listed) in space 59. In this way, the lip or flange 91 can be held or clamped in place by the interference fit, and a suitable pneumatic seal can also be provided between each of these parts.

[0527] Alternatively or additionally, the base 64 is substantially adjacent to or at least partially abuts the shoulder 63 and the inner surface of the outer wall, the base extending as a platform between the outward periphery of the shoulder and the inner surface of the wall. The base 64 can define a sealing surface on which the terminal or terminal end face of another connector can engage, thereby optionally forming a pneumatic connection.

[0528] The connector 200 is configured to provide a plurality of separate sealing surfaces on which sealing can be performed, whether along the entire surface or between component parts at points or specific locations along the surface. Thus, the connector 200 provides six separate and different sealing surface options. Each of them is described below.

[0529] In the first sealing mode, the connector 200 can be configured to provide a first separation surface for sealing when it is separately connected by another connector (such as connector 1), the first surface being defined by:

[0530] - the end face 58 of the second end 52 of the connector 200, when the connector is carried on a flange or lip 16 (or shoulder) protruding outwardly or away from the outer surface of the body of another connector 1. See, for example Fig.23 This sealing surface.

[0531] In the second sealing mode, connector 200 can be configured to provide a second separation surface for sealing when it is separately connected by another connector (such as connector 90), the second surface being defined by:

[0532] - an inner sidewall surface 60 disposed substantially at or towards the bottom end 64 of the second end of the connector 200, and a portion of another connector 90 (such as a lip or flange 91, which may optionally include a shoulder) substantially bears on or along the inner sidewall surface at or towards the bottom end. For example, see Fig.29B Item 180 in .

[0533] In the third sealing mode, the connector 200 can be configured to provide a third separation surface for sealing when it is separately connected by another connector (such as the connector 90), the third surface being defined by:

[0534] - an inner sidewall surface 60 of a projection 60A extending radially inwardly from the inner sidewall surface 60 of the second end 52, with a portion of another connector 90 (such as a lip or flange 91, which may optionally include a shoulder) substantially bearing on or along the surface of the projection 60A. For example, see Fig.29A Item 140.

[0535] In the fourth sealing mode, the connector 200 is configured to provide a fourth separation surface for sealing when it is separately connected by another connector (such as 90), and the fourth surface is defined by:

[0536] - an inner sidewall surface 60 of the second end 52 of the connector 200, wherein the inner sidewall surface extends radially outward from the one or more male connection features (such as the one or more locking fingers 54) as a shoulder 63, and a portion of another connector 90 (such as a lip or flange 91, which may optionally include a shoulder) is substantially carried on the radially outward surface of the shoulder. For example, see Fig.29B Item 170.

[0537] In the fifth sealing mode, the connector 200 is configured to provide a fifth separation surface for sealing when it is separately connected by another connector (such as 90), and the fifth surface is defined by:

[0538] - A radially outward surface of one or more male connection features, in particular, a radially outward surface of one or more locking fingers located within the second end 52 of the connector 200. See, for example, Fig.29B Item 160.

[0539] In the sixth sealing mode, the connector 200 is configured to provide a sixth separation surface for sealing when it is separately connected by another connector (such as 90), and the sixth surface is defined by one or both of the following:

[0540] - A shoulder or lug extending radially outward from one or more male connection features, specifically, a radially outwardly extending face or lug extending radially outward from one or more locking fingers located within the second end 52 of the connector 200 (see, e.g., Fig.29A 150); or

[0541] - a side or base extending as a platform between the outward periphery of a shoulder extending radially outward from the one or more male connection features and the inner surface of the wall (see, for example, Fig.29A Item 130).

[0542] In other configurations, a sleeve 65 can optionally be disposed around the first end 51 of the connector body 50, and can optionally at least partially overlap a portion of the second end 52 of the connector body. Such a sleeve 65 can generally be an overmolded material that is overmolded around the connector body 50, or the sleeve can be a pre-molded component that is assembled into place. Alternatively, the sleeve can be pre-formed so that it can then be slid into place over the connector body or placed into place on the connector body.

[0543] The envelope 65 may be sized to provide for a relatively smooth or uninterrupted outer surface profile, wherein the outer surface of the outer wall substantially abuts or is substantially adjacent to the intersection 66 with the envelope.

[0544] The cover may include an indicator of the connector in place with it (i.e., the cover), or may provide an indication of the size of a particular component or part associated with the connector (optionally, for example, where the part is a patient interface such as a nasal cannula or mask or other such interface). Such an indicator may be by means of color.

[0545] The cuff 65 may be sized to transition from a substantially circular outer surface profile form to a substantially square outer surface profile form disposed substantially (optionally, entirely) around the first end of the connector body when substantially abutting or substantially adjacent to or adjacent to the outer surface of the outer wall of the connector. In this manner, a user may be able to apply greater torque or force to disconnect such a connector 40 from a connected engagement with another connector.

[0546] For example, as specifically referenced FIG. 34A to FIG. 34C As shown, it can be seen that the sleeve 65 transitions from a substantially circular profile (indicated by item 120 ) in region 121 (where the sleeve 65 intersects or is disposed substantially adjacent to the body of the connector 40 ) to a substantially more square or rectilinear shape in region 122 .

[0547] Fig.30 and Fig.35 Also shown is a swivel-type connector component 67 having threads 123 for engaging with terminal threads of a conduit to be engaged therewith and thereby being in fluid communication with the lumen of the connector 40 .

[0548] The cuff 65 may extend substantially from the second end 52 of the connector body 50 so as to overlap over an outer surface of a breathing tube or conduit to which the connector will or can engage when in use, or the cuff extends so as to overlap over at least a portion of a component associated with a terminal end of a breathing tube.

[0549] The outer surface of the cuff may be textured or otherwise surface treated to increase friction or grip to allow a user to apply force or torque to the cuff (and, in turn, the connector).

[0550] The cuff may include one or more splines 124 or other inwardly projecting portions on the inside surface for engaging or fitting into a suitably shaped groove or slot 70 on the outer surface of the body 50 to which the cuff is to be connected. Fig.33A, wherein the sleeve has been made partially transparent, and the groove 70 is then provided in the outer surface of the body 50 of the connector 40. In this way, the sleeve 65 is more accurately positioned on the body, while also reducing the chance of the sleeve accidentally 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)). Fig.33B and Fig.34C The arrangement of the cuff 65 on itself is shown, and the splines 124 or other protrusions become more apparent.

[0551] It will be appreciated that the cuff 66 may be an elastic or elastomerized material, such as silicone or a thermoplastic elastomer (TPE).

[0552] In various configurations, cuff 65 can at least partially help relieve strain otherwise applied to a joint or connection formed between the breathing conduit and the first end or components associated with first end 51 .

[0553] Another component (e.g., such as Fig.29 The swivel connector component 67 shown is a swivel arrangement. The purpose is to provide a connection to the terminal end of the catheter while forming a swivel (or axially rotatable) connection with the connector 200, 40 and the connector body 50.

[0554] Thus, the rotary connector part 67 is connected to at least a portion of the connector body 50 when in use. The rotary connector 67 may be configured to be connected to a terminal end of a catheter, and the rotary connector is configured to be connected to the first end 51 of the connector.

[0555] The rotary connector component 67 may be connected or engaged with the terminal end of the catheter via a thread or a threaded engagement.

[0556] The rotary connector component 67 may be connected to the connector body so that the connector body and the rotary connector are allowed to rotate relative to each other while being prevented from axial relative movement.

[0557] In various embodiments, the rotary connector component 67 may include one or more surfaces 68 that form a rotatable seal with the 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 are used to constrain the surface 68 therein in a manner that allows the rotary connector component 67 to be axially positioned with the connector body, and to allow the one or more surfaces 68 to rotate radially. In this manner, a rotary connection is formed with the connector body.

[0558] Fig.35Aand Fig.35B A connector 40 is shown, wherein the body of the connector 40 includes an attachment arm 129 for attaching a rotary connector component 67 to the connector 40. The attachment arm 129 may include at least one wall portion or attachment barb or retaining protrusion 125, which may engage with a corresponding lip or flange of the rotary connector component 67 or at least a portion of the body to retain the rotary connector component 67 in an axial direction while allowing the rotary connector component 67 to rotate relative to the connector body. The retaining protrusion 125 may include an inclined surface in a direction away from the first end 51 of the connector. The inclined surface may allow the rotary connector component 67 to be inserted. The protrusion 125 may optionally also include a substantially flat side in a direction perpendicular to the body of the connector, the side being configured to prevent relative axial movement of the rotary connector component 67.

[0559] The attachment arm 129 may be cantilevered from a portion of the body so as to bend or flex relative to the body. The cantilevered structure of the attachment arm 129 may allow for easier insertion of the rotary connector component 67 because the attachment arm 129 may flex outwardly to accommodate insertion of the rotary connector component 67.

[0560] The attachment arm 129 can be surrounded by a cutout region 128 that allows the attachment arm to flex relative to the connector body. The cutout region 128 can be arranged around the attachment arm 129 to increase flexibility at least in a direction radially outward from the connector 40.

[0561] The attachment arm 129 may include a recess configured to receive a portion of the rotary connector component 67 (eg, the surface 68 ).

[0562] The above description of the invention includes preferred forms of the invention. Modifications may be made to the invention without departing from the scope of the invention.

Claims

1. A connector to be provided at the terminal end of a breathing tube, the connector comprising: a body including a first end and a second end, the body defining an inner cavity therein for passing gas between each of the first end and the second end, the first end being engaged or engageable with the terminal end of the breathing conduit or at least one component associated with the terminal end of the breathing conduit, and the second end, the second end being engaged or engageable with the second connector or another connector, The inner surface of the body includes one or more internal male connection features extending therein, the internal male connection features being configured to connect with a female end or a female portion of another connector that is receivable with the male connection features, the internal male connection features including one or two or more locking fingers, and an outer wall surrounding the one or more internal male connection features, Therein, the outer wall serves as a sleeve for forming a sleeve connection with a second connector or another connector.

2. The connector according to claim 1, wherein: The diameter of the outer wall of the second end is smallest at the terminal end of the second end, and the diameter of the outer wall gradually increases in a direction extending away from the terminal end of the second end toward the first end, and / or Wherein, the outer surface of the outer wall gradually becomes smaller in the longitudinal direction of the connector.

3. The connector according to claim 1, wherein: The outer wall, or at least an outer surface of the outer wall, includes one or more external alignment features configured to align the connector or another connector to form an externally aligned connection therebetween.

4. The connector according to claim 3, wherein: The external alignment features include one or more cutouts at a terminal end or end face of the outer wall at the second end.

5. The connector according to claim 4, wherein: The cutout is configured to be received by a complementary shaped portion of a connector that the outer wall is to contact.

6. The connector according to claim 3, wherein: The external alignment features may be evenly or equidistantly spaced, arranged or disposed from one another around the circumference of the terminal end face of the outer wall at the second end.

7. The connector according to claim 3, wherein: The external alignment feature is configured to be co-located or co-locatable so as to key with a complementary shaped protrusion of a sleeve portion of the other connector when the external alignment feature connects with the protrusion during connection between the end face of the second end of the connector and another connector.

8. The connector according to claim 3, wherein: The external alignment features are shaped or configured to: preventing the locking fingers of the connector from connecting to another connector when the external alignment features of the connector and the external alignment features of another connector are in a misaligned orientation, and / or The locking fingers of the connector are permitted to connect with another connector when the external alignment features of the connector and the external alignment features of another connector are in an aligned orientation.

9. The connector according to claim 3, wherein: The external alignment features are provided as one or more of: semicircular, triangular, rectangular or other linear, elliptical and / or wedge-shaped cutouts.

10. The connector of claim 1 further comprising one or more external visual aids configured to provide an externally visible guide for aligning the connector or another connector to form an aligned connection therebetween.

11. The connector according to claim 1, wherein: The outer wall provides connection to another connector comprising male or female connection facilities.

12. The connector according to claim 1, wherein: The one or more locking fingers are received within the second end of the connector.

13. The connector according to claim 1, wherein: A space is defined between an outer surface of the one or more locking fingers and an inner surface of the outer wall.

14. The connector according to claim 1, wherein: The locking fingers include a groove on an outer surface of each finger.

15. The connector according to claim 14, wherein: The recess is configured to receive or engage a raised protrusion or tab of another connector.

16. The connector according to claim 1, wherein: The outer surface of the body includes a cuff disposed around at least the first end of the connector body, the cuff extending longitudinally downwardly along at least a portion of the length of a respiratory conduit to be or engageable with the first end, and wherein the cuff is an elasticized or resilient material.

17. The connector according to claim 1, wherein: A cuff is disposed to at least partially overlap a portion of the second end of the connector body.

18. The connector according to any one of claims 1 to 17, wherein: The connector is connected to the patient interface via a catheter.

19. A connector as claimed in claim 18, wherein: The patient interface is a nasal cannula.

20. An adapter configured to facilitate connection between two connectors, the adapter comprising a connector as claimed in any one of claims 1 to 19.

21. The adapter of claim 20, wherein: The adapter is connected to the patient interface via a catheter.

22. The adapter of claim 21, wherein: The patient interface is a nasal cannula.

23. A connector assembly, comprising: The connector according to claim 1.

Images