conduit connector

Abstract

This invention relates to a connector configured to be in direct fluid communication or engagement with a terminal of a breathing tube, or via a component associated with the terminal of the breathing tube. In at least one embodiment, the connector includes a body having a first end and a second end, and an internal lumen for allowing gas to pass between the ends. The first end is engageable with the terminal of the tube or a component associated with the terminal. The second end is engageable with another connector. At the second end, an inner surface of the body includes an internal connection feature for connection with another connector to be received therein. An outer surface of the body includes one or more external alignment features for aligning the connector or the other connector to form an alignment orientation therebetween.

Description

Technical Field

[0001] This invention relates to connectors used in breathing circuits, and more specifically, but not only, to connectors used at the ends of breathing tubes. Background Technology

[0002] Providing connectors for the terminals of breathing catheters is important for the continuous and safe delivery of gas therapy to patients.

[0003] For example, humidifying gas or other gases can be delivered via a series of catheters used to provide a breathing circuit, thereby supplying gas to patient interfaces such as nasal cannulas, mouthpieces, full-face masks, and nasal masks. Different catheters can be used in different parts of the breathing circuit.

[0004] For example, catheters most closely associated with the patient may have a smaller diameter and may need to be more flexible, while catheters farther from the patient may have a larger diameter, be less flexible, and may include electronics such as heaters or other sensing circuitry.

[0005] Given different catheters and the order of various patient interfaces that can be attached to these different catheters, connectors or connector systems that help users make the correct connector connections have a particular advantage.

[0006] References to patent specifications, other external documents, or other sources of information have been made in this specification, typically to provide context for discussing the features of the invention. Unless otherwise specifically stated, such references to external documents should not be construed under any jurisdiction as an admission that such documents or sources of information are prior art or form part of common general knowledge in the art. Summary of the Invention

[0007] Therefore, the object of the present invention is to provide a connector or connector system that will at least partially solve the aforementioned problems or will at least provide a useful option for industry and / or the public.

[0008] Sometimes, it may be necessary to remove or replace the airflow source, remove the patient interface from the breathing circuit, or replace other catheters that form part of the breathing circuit. If removing specific components (e.g., catheters or patient interfaces) from the circuit is difficult or time-consuming, such removal can adversely affect the maintenance or continued delivery of gas therapy to the patient, or may frustrate the person performing the removal. Furthermore, in emergency situations, slow or difficult connections can potentially endanger the patient's health. Therefore, a catheter connector that provides greater patient comfort and / or safety, offering "quick connection" or "quick disconnect" capabilities, facilitates rapid and accurate alignment and connection of new connectors, and promotes component interchangeability.

[0009] In a first aspect, a connector is provided for placement at the end of a breathing duct, the connector comprising:

[0010] A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end.

[0011] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0012] The second end, in use, engages with or can engage with another connector, and

[0013] The inner surface of the body includes one or more internal connection features configured to connect with the other connector receivable therein.

[0014] The outer surface of the body includes one or more external alignment features configured to align the connector or another connection thereby forming an external alignment connection therebetween.

[0015] In a second aspect, a connector is provided for placement at the end of a breathing duct, the connector comprising:

[0016] A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end.

[0017] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0018] The second end, in use, engages with or can engage with another connector, and

[0019] The inner surface of the body includes one or more internal connection features configured to connect with the other connector receivable therein.

[0020] One or more of the external visual aids are configured to provide an externally visible guide when in use, the externally visible guide being used to align the connector or another connector thereby forming an alignment connection therebetween.

[0021] Based on the first and second aspects above, one or more additional features are provided through the optional configuration described below.

[0022] The one or more internal connection features may be surface features that extend radially inward from the surface of the internal sidewall of the body.

[0023] One or more internal connectivity features may include one or more protrusions.

[0024] The one or more tabs may be protruding portions.

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

[0026] A pair of the aforementioned internal connection features may exist.

[0027] At least one of the internal connection features (optionally, one) may include a longitudinally extending channel or recess that may be configured to position, hold, or place 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 within it to form an alignment connection orientation.

[0029] The inner surface may include one or more internal alignment features configured to rotatably orient a convex connection feature of another connector to an aligned connection orientation for connection with the connector, or at least 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 that extend radially inward from the surface of the internal sidewall of the body.

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

[0032] The one or more tabs may be protruding portions.

[0033] The one or more tabs may include a pair of shoulders that are angled away from each other and away from the ends of the tabs located at the intersection of the shoulders, and the ends of the tabs are positioned toward the terminal of the second end of the connector to a greater extent 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 the surface of the inner sidewall 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 around the inner surface of the body, and optionally two sets of alignment features may be present.

[0037] Each set of 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 allows for the rotatable alignment of a pair of fingers extending from another connector when inserted into the inner surface of the connector or positioned to engage or contact the inner surface.

[0040] The first end is configured to engage with the terminal of the breathing tube.

[0041] The first end may include a sleeve portion that is attached to and pneumatically connected to the end of the breathing tube.

[0042] At least a portion of the sleeve portion can be inserted into the inner surface or cavity of the end of the breathing tube, or will be positioned or accommodated within the inner surface or cavity.

[0043] At least a portion of the sleeve portion may be received on the outer surface of the end of the breathing tube or will be positioned or accommodated on the outer surface.

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

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

[0046] The one or more tabs may be protruding portions.

[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 the surface of the outer sidewall of the body.

[0048] The at least one or each rib or protrusion may include a pair of shoulders that are angled 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 toward the terminal of the second end of the connector to a greater extent than the shoulders.

[0049] The at least one or each rib or protrusion may be substantially tongue-shaped, and / or substantially triangular and / or substantially gradually decrease in size toward the end.

[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 can be spaced, arranged, or positioned evenly or equidistantly from each other around the circumference or radius of the outer surface.

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

[0053] The height of the external alignment feature can gradually decrease along the length.

[0054] The height of the protrusion can be:

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

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

[0057] The stepped protrusion may be substantially located at or toward the base of one or each of the external alignment features, and the stepped protrusion is a protrusion that extends radially outward more than the adjacent portion of the external alignment feature.

[0058] The stepped protrusion may be configured to be cooperatively positioned or cooperatively positioned so that, during connection between the connector and another connector, the stepped protrusion engages with a groove or cutout of a complementary shape to at least a portion of the sleeve portion of the other connector.

[0059] The stepped protrusions can be configured to act as keys so as to be positioned complementary to grooves or cutouts of complementary shapes of the components to which they are connected.

[0060] The groove or cutout may be substantially provided at or toward the base of one or each of the external alignment features, and the groove or cutout is configured to receive a protrusion or projection of a complementary shape portion of another connector.

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

[0062] The groove or cutout can be configured to act as a keyway so as to be complementaryly positioned with a protrusion or projection of a complementary shape of the component to which the groove or cutout is connected.

[0063] The stepped protrusions, grooves, or cutouts may have the following shapes or profiles for positioning or receiving them together with substantially complementary grooves, cutouts, protrusions, or projections: semicircular, triangular, rectangular, or other linear or geometric shapes, elliptical, wedge-shaped.

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

[0065] When manufactured together with the outer surface of the connector, the flange or lip can substantially define a stop end for the maximum engagement point or length of 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 slotted areas, or

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

[0069] The flange or lip may extend longitudinally so as to be configured to engage with the end of the breathing tube.

[0070] The sheath may optionally be an overmolded sheath that provides pneumatic engagement between the outer surface of the body and the end of the breathing tube. Optionally, the sheath enables a first end of the connector to pneumatically engage with the end of the breathing tube.

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

[0072] i. One or more radial and / or longitudinal recessed or slotted areas, or

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

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

[0075] The inner surface of the body (optionally facing the second end of the connector) can be configured to position, hold, or place a printed circuit board (PCB) arrangement.

[0076] PCB facility circuitry can be used for: control, sensing (e.g., temperature, humidity, flow rate), heating (e.g., heating wires), or other electronic components for a breathing duct intended to be used as part of a breathing circuit.

[0077] The connector can provide multiple separate sealing surfaces on which a separate connector can be individually connected. Optionally, two separate sealing surfaces can exist to accommodate two different connectors.

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

[0079] - A radially extending flange or lip sidewall surface protruding from the outer surface of the body, the sidewall facing the terminal face of another connector that can be substantially supported on the sidewall, or

[0080] - Inner surface, when the connector is carried on the radially outward surface of another connector (such as the radially outward surface of another connector), the inner surface is substantially at or toward the end of the second end of the connector.

[0081] The connector can be configured to provide a second end for sealing on a second sealing surface of another connector, the second sealing surface being defined by the following:

[0082] Essentially, it is located at the bottom end of the second end of another connector or on the inner sidewall surface facing the bottom end. In use, the body of the second end of the connector is supported on the inner sidewall surface or located along the inner sidewall surface at the bottom end of another connector or facing the bottom end.

[0083] The connector can be configured to provide a body with a second end for sealing on a third sealing surface of another connector, said third sealing surface being defined by the following:

[0084] The protrusion extends radially inward from the inner sidewall surface of the second end of the other connector when the body of the second end is substantially supported on the surface of the protrusion of the other connector or along the surface of the protrusion.

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

[0086] The inner sidewall surface of the second end of another connector, wherein the inner sidewall surface extends radially outward from one or more convex 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 can be configured to provide a body with a second end for sealing on a fifth sealing surface of another connector, said fifth sealing surface being defined by the following:

[0088] One or more radially outward surfaces of convex connection features, specifically, one or more radially outward surfaces of locking fingers located within the second end of another connector.

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

[0090] The side or lug of a shoulder extending radially outward from one or more convex connection features, specifically, the radially outward extending surface or lug extending radially outward from one or more locking fingers located within the second end of another connector, or

[0091] A side or base extending as a platform between the outward periphery of a shoulder extending radially outward from one or more convex connection features of another connector, this side or base extending as a platform located within a second end of another connector.

[0092] The connector's one or more external alignment features can be shaped or configured as follows:

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

[0094] When the external alignment feature of the connector and the external alignment feature of another connector are aligned, the internal connection feature of the connector is allowed to connect to the other connector.

[0095] In a third aspect, a connector is provided for placement at the end of a breathing duct, the connector comprising:

[0096] A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end.

[0097] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0098] The second end, in use, engages with or can engage with another connector, and

[0099] The inner surface of the body includes one or more internal convex connecting features extending therein, the internal convex connecting features being configured to connect with a concave end or concave portion of another connector that can receive the convex connecting feature, the convex internal connecting feature including one or more (optionally, a pair) locking fingers, and

[0100] The connector described herein also includes one or both of the following:

[0101] a. The one or more internal convex connection features are surrounded by an outer wall, the outer surface of which is tapered and gradually decreases in size in the 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 which, 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 external alignment connection therebetween, and / or one or more external visual aids configured to provide externally visible guides in use to align the connector or another connector to form an alignment connection therebetween.

[0104] In a fourth aspect, a connector is provided for placement at the end of a breathing duct, the connector comprising:

[0105] A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end.

[0106] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0107] The second end, in use, engages with or can engage with another connector, and

[0108] The inner surface of the body includes one or more internal convex connecting features extending therein, the internal convex connecting features being configured to connect with a concave end or concave portion of another connector that can receive the convex connecting feature, the convex internal connecting feature including one or more (optionally, a pair) locking fingers, and

[0109] The connector further includes an outer wall surrounding the one or more internal convex connection features. The outer surface of the outer wall is tapered, gradually decreasing in size in the substantially longitudinal direction of the connector.

[0110] In a fifth aspect, a connector is provided for placement at the end of a breathing duct, the connector comprising:

[0111] A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end.

[0112] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0113] The second end, in use, engages with or can engage with another connector, and

[0114] The inner surface of the body includes one or more internal convex connecting features extending therein, the internal convex connecting features being configured to connect with a concave end or concave portion of another connector that can receive the convex connecting feature, the convex internal connecting feature including one or more (optionally, a pair) locking fingers, and

[0115] The connector further includes an outer wall surrounding the one or more internal convex connection features, the outer surface of the outer wall, 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 external alignment connection therebetween, and / or one or more external visual aids configured to provide externally visible guides in use to align the connector or another connector to form an alignment connection therebetween.

[0117] Based on the third, fourth, and fifth aspects above, one or more additional features are provided through optional configurations described above or below.

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

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

[0120] A space may be defined between the outer surface of one or more internal convex connecting features and the 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, the one or more alignment features being configured to align the outer wall and the connector or another connection to form an alignment connection therebetween, and / or the one or more external visual aids being configured to provide an externally visible guide in use to align the connector or another connector to form an alignment connection therebetween.

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

[0123] The external alignment feature may include one or more cuts on the terminal face of the outer wall at the second end, the cuts being configured to be received by a substantially complementary portion of the connector that the outer wall will contact.

[0124] The external alignment features can be spaced, arranged, or positioned evenly or equidistantly from each other around the circumference of the terminal face of the outer wall of the second end.

[0125] The external alignment feature may be configured to be cooperatively positioned or cooperatively positioned so that, during connection between the end face of the second end of the connector and another connector, the external alignment feature engages with a protrusion of a complementary shape to the sleeve portion of the other connector.

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

[0127] The groove can be shaped to receive the internal connection features of another connector.

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

[0129] A groove or cutout may be provided on the end face of the outer wall of the second end of the connector, the groove or cutout being configured to receive a protrusion or projection of a complementary shape of another connector or being positioned to connect with the protrusion or projection.

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

[0131] The groove or cutout can be configured to act as a keyway so as to be complementaryly positioned with a protrusion or projection of a complementary shape of the component to which the groove or cutout is connected.

[0132] The longitudinally extending protrusion may be substantially located at or toward the end face of the outer wall of the second end of the connector, and the protrusion is a protrusion that extends longitudinally further than the adjacent portion of the end face of the outer wall of the second end of the connector.

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

[0134] The protrusion can be configured to act as a key so as to be positioned complementary to a groove or cutout of a complementary shape of the component to which it is connected.

[0135] Alignment features can be grooves or cutouts of the following shapes or contours for positioning or receiving protrusions or projections of substantially complementary shapes to another connector: semicircular, triangular, rectangular or other linear or geometric shapes, elliptical, wedge-shaped.

[0136] The outer wall can be a sleeve, which is configured to serve as a 22mm convex tapered connector for another connector including a concave connection facility.

[0137] The outer wall can be a sleeve, which is configured to serve as a 22mm concave tapered connector for another connector that includes a convex connection facility.

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

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

[0140] The inner surface of the second end of the body may further include a protrusion for engaging (e.g., interference fit) a portion of a correspondingly shaped connector that will be received by the inner surface defined by the outer wall or received within the inner surface.

[0141] The protrusion may extend radially outward from one or more locking fingers as a shoulder, and optionally also extend longitudinally in the direction toward the open end of the second end of the connector.

[0142] The protrusion may extend radially outward as a shoulder from one or both of the following:

[0143] The one or more locking finger members

[0144] A base, which extends as a substrate from the inner surface of the outer wall.

[0145] Optionally, the shoulder extends longitudinally in the direction toward the 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 able to receive the terminal of another connector, the terminal of which is received as an interference fit between the outward surface of the shoulder and the inner surface of the outer wall.

[0147] The base may substantially adjacent to or at least partially abut the inner surface of the shoulder and 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 on which the terminal or end face of another connector may engage, thereby optionally forming a pneumatic connection.

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

[0150] The envelope can be pre-formed or can be an overmolded material that wraps around the connector body.

[0151] The dimensions of the envelope can be set to provide a relatively smooth or uninterrupted outer surface profile, wherein the outer surface of the outer wall substantially adjoins or substantially proximates the intersection with the envelope.

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

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

[0154] The size of the envelope can be set such that, when substantially adjacent to or adjacent to the outer surface of the outer wall of the connector, it transitions from a substantially circular outer surface profile to a substantially (optionally, entirely) square outer surface profile that is set around the first end of the connector body.

[0155] The envelope may extend from the second end of the connector body to overlap the outer surface of the engaging or engaging breathing tube when the connector is in use, or the envelope may extend to overlap at least a portion of a component associated with the end of the breathing tube.

[0156] The envelope can be made of elastic or elastomeric material, optionally silicone or thermoplastic elastomer (TPE).

[0157] The body of the connector may include at least one groove or slot, which is shaped as one or more splines on the inner surface of the receiving envelope.

[0158] The rotary connector component can be connected to the first end of the connector during use.

[0159] The rotary connector can be configured to connect to the end of the conduit, and the rotary connector can be configured to connect to the body of the connector.

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

[0161] Maintaining a protrusion may include one or both of the following:

[0162] Optionally, an inclined surface that is inclined away from the first end of the body.

[0163] The surface is basically perpendicular to the inner wall of the connector body.

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

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

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

[0167] The connector may include at least one cutout area located around at least a portion of the attachment arm. The cutout area improves flexibility in the radial direction.

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

[0169] The attachment arm can be located in a groove or slot of a spline on the inner surface of the receiving envelope.

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

[0171] Rotary connector components can be threaded onto conduits.

[0172] A rotary connector can be attached to the first end, allowing the connector body and the rotary connector to rotate relative to each other while preventing axial relative movement.

[0173] Rotary connectors may include one or more surfaces that form a rotatable seal with the inner surface of the connector body.

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

[0175] The end face of the second end of the connector when the connector is carried on a flange or lip (or shoulder) that protrudes outward from 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 individually connected to it via another connector, the second surface being defined by the following:

[0177] An inner sidewall surface 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, optionally including a shoulder) is substantially supported on or along the inner sidewall surface at or toward the bottom end.

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

[0179] The inner sidewall surface of the protrusion, which extends radially inward from the inner sidewall surface of the second end, and a portion of another connector (such as a lip or flange, optionally which may include a shoulder) is substantially supported on the surface of the protrusion or at a location along the surface.

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

[0181] The inner sidewall surface of the second end of the connector, wherein the inner sidewall surface extends radially outward from the one or more convex 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 individually connected to it via another connector, said fifth surface being defined by the following:

[0183] One or more radially outward surfaces of convex connection features, specifically, one or more radially outward surfaces of locking fingers located within the second end of the connector.

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

[0185] The side or lug of a shoulder extending radially outward from one or more convex connection features, specifically, the radially outward extending surface or lug extending radially outward from one or more locking fingers located within the second end of the connector, or

[0186] The shoulder, which extends radially outward from one or more convex connecting features, extends between the outer periphery of the shoulder and the inner surface of the wall, serving as the side or base of the platform.

[0187] The connector's one or more external alignment features can be shaped or configured as follows:

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

[0189] When the external alignment feature of the connector and the external alignment feature of another connector are aligned, the internal connection feature of the connector is allowed to connect to the other connector.

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

[0191] A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end.

[0192] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0193] The second end, in use, engages with or can engage with another connector, and

[0194] The outer surface of the body includes a sleeve that is 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 sleeve extending longitudinally downwards substantially along at least a portion of the length of the breathing tube that will engage or can engage with the first end, and

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

[0196] Based on the above, one or more additional features are provided through optional configurations described above or below.

[0197] The overlap of the envelope with the breathing tube can at least partially help alleviate strain that is otherwise applied to the joint or connection formed between the breathing tube and the first end or the component associated with the first end.

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

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

[0200] A space may be defined between the outer surface of one or more internal convex connecting features and the 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, the one or more alignment features being configured to align the outer wall and the connector or another connection to form an alignment connection therebetween, and / or the one or more external visual aids being configured to provide an externally visible guide in use to align the connector or another connector to form an alignment connection therebetween.

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

[0203] The groove can be shaped to receive the internal connection features of another connector.

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

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

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

[0207] The groove or cutout can be configured to act as a keyway so as to be complementaryly positioned with a protrusion or projection of a complementary shape of the component to which the groove or cutout is connected.

[0208] The longitudinally extending protrusion may be substantially located at or toward the end face of the outer wall of the second end of the connector, and the protrusion is a protrusion that extends longitudinally further than the adjacent portion of the end face of the outer wall of the second end of the connector.

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

[0210] The protrusion can be configured to act as a key so as to be positioned complementary to a groove or cutout of a complementary shape of the component to which it is connected.

[0211] The stepped protrusions, grooves, or cutouts may have the following shapes or profiles for positioning or receiving them together with substantially complementary grooves, cutouts, protrusions, or projections: semicircular, triangular, rectangular, or other linear or geometric shapes, elliptical, wedge-shaped.

[0212] The outer wall can be a sleeve, which is configured to serve as a 22mm convex tapered connector for another connector including a concave connection facility.

[0213] The outer wall can be a sleeve, which is configured to serve as a 22mm concave tapered connector for another connector that includes a convex connection facility.

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

[0215] The inner surface of the second end of the body may further include a protrusion for engaging (e.g., interference fit) a portion of a correspondingly shaped connector that will be received by the inner surface defined by the outer wall or received within the inner surface.

[0216] The protrusion may extend radially outward from one or more locking fingers as a shoulder, and optionally also extend longitudinally in the direction toward the open end of the second end of the connector.

[0217] The protrusion may extend radially outward as a shoulder from one or both of the following:

[0218] The one or more locking finger members

[0219] A base, which extends as a substrate from the inner surface of the outer wall.

[0220] Optionally, the shoulder extends longitudinally in the direction toward the 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 able to receive the terminal of another connector, the terminal of which is received as an interference fit between the outward surface of the shoulder and the inner surface of the outer wall.

[0222] The base may substantially adjacent to or at least partially abut the inner surface of the shoulder and 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 on which the terminal or end face of another connector may engage, thereby optionally forming a pneumatic connection.

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

[0225] The envelope can be pre-formed or an overmolded material that wraps around the connector body.

[0226] The dimensions of the envelope can be set to provide a relatively smooth or uninterrupted outer surface profile, wherein the outer surface of the outer wall substantially adjoins or substantially proximates the intersection with the envelope.

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

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

[0229] The size of the envelope can be set such that, when substantially adjacent to or adjacent to the outer surface of the outer wall of the connector, it transitions from a substantially circular outer surface profile to a substantially (optionally, entirely) square outer surface profile that is set around the first end of the connector body.

[0230] The body of the connector may include at least one groove or slot, which is shaped as one or more splines on the inner surface of the receiving envelope.

[0231] Rotary connector components can be connected to the connector body during use.

[0232] The rotary connector can be configured to connect to the end of the conduit, and the rotary connector can be configured to connect to the body of the connector.

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

[0234] Maintaining a protrusion may include one or both of the following:

[0235] An inclined surface that can be optionally tilted away from the first end of the body

[0236] The surface is basically perpendicular to the inner wall of the connector body.

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

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

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

[0240] The connector may include at least one cutout area located around at least a portion of the attachment arm. The cutout area improves flexibility in the radial direction.

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

[0242] The attachment arm can be located in a groove or slot of a spline on the inner surface of the receiving envelope.

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

[0244] Rotary connector components can be threaded onto conduits.

[0245] A rotary connector can be attached to the first end, allowing the connector body and the rotary connector to rotate relative to each other while preventing axial relative movement.

[0246] Rotary connectors may include one or more surfaces that form a rotatable seal with the inner surface of the connector body.

[0247] The connector's one or more external alignment features can be shaped or configured as follows:

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

[0249] When the external alignment feature of the connector and the external alignment feature of another connector are aligned, the internal connection feature of the connector is allowed to connect to the other connector.

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

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

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

[0253] The outer surface of the main body,

[0254] The sidewalls of radially extending flanges or lips,

[0255] The outer surface of the envelope surrounding the first end of the connector body.

[0256] In a ninth aspect, a connector is provided for placement at the end of a breathing duct, the connector comprising:

[0257] The main body includes a first end and a second end.

[0258] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or at least a component associated with the terminal of the breathing tube, and

[0259] The second end, in use, engages with or can engage with the second connector, and

[0260] The inner surface of the body includes one or more internal connection features and / or alignment features configured to connect with a second connector that can be received therein.

[0261] The one or more internal connectivity features and / or alignment features mentioned above include at least one of the following:

[0262] Radially inward protrusions or ribs

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

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

[0265] The connection features can be configured to facilitate the connection between the connector and the second connector.

[0266] Connection features and / or alignment features may provide at least a partial seal or 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 (e.g., a groove in a sleeve or socket) of the second connector, and / or at least one groove of the connector may be configured to mate with a corresponding rib or protrusion of the second connector.

[0268] One or more internal connection features and / or alignment features may be configured to co-locate or be co-locateable in order to bond with a protrusion or groove of a complementary shape 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 protrusions may be equidistantly spaced around the circumference of the inner surface of the connector.

[0270] There may be one or more ribs and / or grooves, and optionally there may be two, three, four, five or six ribs and / or grooves.

[0271] There can be 4 ribs.

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

[0273] At least one protrusion or rib may extend substantially from or near the end of the second end of the connector in a direction toward the first end of the connector.

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

[0275] The connector may be configured to provide at least a first inner surface for sealing an outer portion of the second connector when connected or mated with the second connector. The first inner surface is provided by a circumferential portion of an inner surface of a body, optionally located at or near a second end of the connector body, and configured to be substantially continuous and substantially circumferentially positioned around the outer portion of the second connector, the first inner surface being connected to or mating with the outer portion.

[0276] Alignment features or connection features may form at least a portion of the first inner surface of the body.

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

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

[0279] At least one protrusion or rib may extend substantially from or near the end of the second end of the connector in a direction toward the first end of the connector.

[0280] When viewed in cross-section, the first inner surface can be substantially curved.

[0281] The profile of the first inner surface (e.g., the radius of curvature and the bending position of the first inner surface) can match the outer profile (e.g., the outer curve or curvature) of the envelope of the second connector.

[0282] At least one alignment feature or connection feature (optionally, a protrusion or rib) has sufficient dimensions to extend substantially to the outermost tip of the outer contour of the second connector when in use.

[0283] At least one alignment feature or connection feature (optionally, a protrusion or rib) may be sized sufficiently to extend substantially to the position between the outermost tip of the outer contour of the second connector's envelope and the end of the envelope 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) may be sized sufficiently to extend substantially to the position between the outermost tip of the outer contour of the second connector's envelope and the end of the envelope closest to the second connector that is connected to the conduit, when in use.

[0285] The connector may be configured to provide a second inner surface for sealing when connected or mated with the second connector, the second surface being defined as a sidewall surface by a substantially radially extending flange or lip that projects radially inward from the inner surface of the body, the sidewall surface providing a face.

[0286] The surface may have dimensions sufficient to seal on the corresponding surface of the second connector.

[0287] The surface can be configured to provide a substantially planar surface on which a portion or surface of the second connector can mate or engage.

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

[0289] The surface can be configured to mate or seal onto the sidewall, lug, lip, base, or end of the 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 connecting feature or alignment feature may be a rib or a protrusion.

[0292] The surface may include one or more internal connection features and / or alignment features, which are co-positioned or co-positionable to engage with a protrusion or groove of a complementary shape of a portion of the second connector.

[0293] At least one groove may be located in the sidewall or inner surface of the connector, the at least one groove being used to accommodate the protrusion of the second connector.

[0294] The groove can be a recess or other surface irregularity feature provided on the surface.

[0295] The depression or other surface irregularities can be cuts in the surface.

[0296] When the second connector mates or connects with the second inner surface, the groove can be configured to accommodate or receive associated protrusions or other shaped features of the second connector.

[0297] At least one protrusion may be located in the sidewall or inner surface of the connector, the at least one protrusion being adapted to fit into the groove of the second connector.

[0298] The connector may be configured to provide at least a third inner surface for sealing 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 an inner surface of a body, optionally located at or near a first end of the body or at or near a second end of the connector body, and is configured to be substantially continuous and substantially circumferentially positioned around the outer portion of the second connector, the third inner surface being connected to or mating with the outer portion.

[0299] Alignment features or connection features may form at least a portion of the 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 groove may be shaped to accommodate a protrusion of the second connector.

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

[0303] At least one groove may be substantially tongue-shaped, and / or substantially triangular and / or substantially gradually decrease in size toward the end.

[0304] The groove can be a vertical channel.

[0305] The connector may include one or more sealing surfaces, said one or more sealing surfaces being defined by one or both of the following:

[0306] The first sealing surface as described above,

[0307] The second sealing surface as described above,

[0308] The third sealing surface as described above.

[0309] An adapter may be configured to facilitate a connection between two connectors, wherein the connector described in any of the aspects from the ninth to the tenth is provided as part of the adapter.

[0310] A breathing tube assembly may include:

[0311] Breathing tube, and

[0312] Connectors as described in any one of aspects one through nine

[0313] The connector is either attached to, associated with, or connected to the breathing tube.

[0314] The connector's one or more external alignment features can be shaped or configured as follows:

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

[0316] When the external alignment feature of the connector and the external alignment feature of another connector are aligned, the internal connection feature of the connector is allowed to connect to the other connector.

[0317] In a tenth aspect, a connector assembly is provided, the connector assembly including a first connector and a second connector, the first connector being configured to connect to the second connector.

[0318] The first connector includes:

[0319] A first connector body includes a first end and a second end, and the first connector body internally defines an inner cavity for allowing gas to pass between each of the first end and the second end.

[0320] The first end, in use, engages with or is capable of engaging with the terminal of the breathing tube or a component associated with the terminal of the breathing tube, and and

[0321] The second end, during use, engages with or can engage with the second connector, and

[0322] The inner surface of the body includes one or more internal connection features, and

[0323] The outer surface of the subject includes one or more external alignment features;

[0324] The second connector includes:

[0325] A second connector body, comprising a first end and a second end, wherein the body internally defines a cavity for allowing gas to pass between each of the first end and the second end.

[0326] The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or a component associated with the terminal of the breathing tube, and

[0327] The second end, in use, engages with or can engage with the first connector, and

[0328] The inner surface of the body includes one or more internal connection features.

[0329] An outer wall surrounding the one or more internal connection features, the outer wall or at least its outer surface including one or more external alignment features;

[0330] When the external alignment features of the first connector and the external alignment features of the second connector are aligned, the internal connection features of the first connector and the internal connection features of the second connector are oriented for connection.

[0331] When the external alignment features of the first connector and the external alignment features of the second connector are in an misaligned orientation, the internal connection features of the first connector and the internal connection features of the second connector are prevented from connecting.

[0332] The first connector may be defined by connectors of the first aspect and the second aspect.

[0333] The second connector may be defined by a connector from any of the third, fourth, or fifth aspects.

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

[0335] The internal connection features of the first or second connector may include one or more (optionally, a pair) locking fingers.

[0336] The first connector and / or the second connector may include one or more external visual aids configured to provide externally visible guides in use for aligning the connectors to form an alignment connection therebetween.

[0337] The outer surface of the outer wall of the first connector and / or the second connector may gradually decrease in size in the substantially longitudinal direction of the connector.

[0338] As used in this specification, the term "comprising" means "consisting of at least part of...". When interpreting each statement in this specification containing the term "comprising", features other than the one or more features following the term may also be present. Related terms such as "comprise" and "comprises" will be interpreted in the same manner.

[0339] The present invention may also be broadly defined as any part, element, or feature individually or collectively referred to or specified in the description of this application, and any or all combinations of any two or more of the said parts, elements, or features, and when a specific integer having a known equivalent in the field to which the present invention relates is referred to herein, such known equivalents are considered to be incorporated herein as if individually listed.

[0340] The present invention is based on the foregoing and also envisions various structures, of which only some examples are given below. Attached Figure Description

[0341] Preferred embodiments of the invention will be described by way of example only and with reference to the accompanying drawings, in which:

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

[0343] Figure 1A This is a perspective view of the connector as seen from the second end (the connector connection end).

[0344] Figure 2 From Figure 1 A perspective view of the other end of the connector.

[0345] Figure 2A From Figure 1A A perspective view of the other end of the connector.

[0346] Figure 2B Will Figure 1A and Figure 2A The connector is shown as part of a component having a conduit and another connector.

[0347] Figure 3 yes Figure 2 The side view of the connector, and Figure 4 This is another side view where the connector has been rotated 90°.

[0348] Figures 5 to 7 Each is shown Figure 1 Different views of the interior of the second end of the connector.

[0349] Figure 8 Is it through Figure 1 The cross-section of the connector's center or center line.

[0350] Figure 9 It is relative to Figure 8 Obtained by axial rotation Figure 1 Another cross-section of the connector.

[0351] Figure 10 It is relative to Figure 8 and Figure 9 Obtained by axial rotation Figure 1 Another cross-section of the connector.

[0352] Figure 11 yes Figure 1 An alternative embodiment of the connector is shown in the perspective view.

[0353] Figure 12 , Figure 13 , Figure 14 and Figure 16 yes Figure 11 Different views of the second end of the connector.

[0354] Figure 15 and Figure 17 It shows the relationship with Figure 14 and Figure 16 Same view, but relative to Figure 1A and Figure 2A Regarding the connector.

[0355] Figure 18 Is it through Figure 11 The cross-section of the connector shows its internal features.

[0356] Figure 19 Is it through Figure 11 Another cross-sectional view of the connector.

[0357] Figure 20 Is it through Figure 1A and Figure 2A A cross-sectional view of the connector.

[0358] Figures 21 to 23 It shows Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 16 and Figure 19 The connector is connected to another connector (which is made of) Figures 28 to 29The sequence of connection or engagement of the connectors shown.

[0359] Figure 24 It shows the result of Figures 21 to 23 The diagram shows a perspective view of the connection achieved by the connector.

[0360] Figure 25 It shows when by Figures 21 to 23 The cross-section of the interconnected features of the joint shown in the implementation.

[0361] Figures 26 to 27 A known connector is shown with a convex connection feature in the form of a pair of locking fingers, which is capable of engaging with... Figures 21 to 23 The method shown is similar to the method described above. Figure 1 The connectors are used for engagement.

[0362] Figure 28 Is it through Figures 21 to 23 The cross-section of the left-hand connector in the connector arrangement shown.

[0363] Figure 28A A perspective view of the connector is shown.

[0364] Figure 28B1 It shows Figure 28A Side view of the connector.

[0365] Figure 28B2 It shows Figure 28A Top view of the connector.

[0366] Figure 28C It shows the connection to Figures 28A to 28B2 The connector's tether.

[0367] Figure 28D It shows Figures 28A to 28B2 The connector and components with optional tethers for attachment, such as tracheostomy interfaces.

[0368] Figure 28E A patient interface, such as a nasal cannula, is shown. Figures 28A to 28B2 The connector components.

[0369] Figure 28F It shows Figures 28A to 28B2 The connector and the tethering assembly connected to the connector.

[0370] Figure 29 yes Figure 28 External perspective view of the connector.

[0371] Figure 29A and Figure 29B yes Figure 29 A close-up view of the area designated as item 'A' or 'B' in the center circle.

[0372] Figure 30 This is a cross-section of another connector embodiment, additionally showing a rotary arrangement combined with an envelope arrangement.

[0373] Figure 31 yes Figure 30 External perspective view of the connector.

[0374] Figure 32 It is shown specifically by a flange or lip and such Figures 28 to 29 The connector shown achieves a connection through its convex connection feature.

[0375] Figure 33A The diagram illustrates how a connector body, on which a sleeve can be used, can include slots or recesses for receiving splines or other protrusions of the sleeve. Figure 33B The cover to be placed on the body is shown.

[0376] Figure 34A Another connector embodiment is shown in perspective, and Figure 34B and Figure 34C yes Figure 34A Perspective views of different ends of the envelope shown.

[0377] Figure 35 Is it through Figure 34A The cross-section of the connector's center or centerline shows the internal parts, including the rotary connector components.

[0378] Figure 35A This is a perspective view of the connector. Figure 35B yes Figure 35A The cross-section of the connector.

[0379] Figure 36 This is a perspective view of the connector.

[0380] Figure 36A yes Figure 36 End view of the connector.

[0381] Figure 37 The connector that engages with the second connector is shown. Figure 37A It shows Figure 37 The cross-section.

[0382] Figure 38 The connector that engages with the second connector is shown. Figure 38A It shows Figure 38 The cross-section.

[0383] Figure 39 The connector that engages with the second connector is shown. Figure 39A It shows Figure 39 The cross-section.

[0384] Figure 40 The connector that engages with the second connector is shown. Figure 40A It shows Figure 40 The cross-section.

[0385] Figure 41 The connector that engages with the second connector is shown. Figure 41A It shows Figure 41 The cross-section.

[0386] Figure 42 The connector that engages with the second connector is shown. Figure 42A It shows Figure 42 The cross-section.

[0387] Figure 43 The engagement between the first connector and the second connector is shown. Detailed Implementation

[0388] 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 delivering humidifying gas or other gases to the patient.

[0389] Reference Figures 1 to 20 A connector 1 is provided, which will be positioned at the end of a breathing tube (represented by C in the figure). The breathing tube may be a medical breathing tube. Connector 1 includes 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 airflow through the inner cavity, when placed in a breathing circuit, ends 5 and 6 of connector 1 can each be considered upstream or downstream of the other end; for example, the direction of the airflow will determine whether end 5 is fluidly upstream or downstream of the other end 6.

[0390] In use, the first end 5 is engaged with or can be engaged with the end of the breathing tube 3 or at least one component associated with the end of the breathing tube.

[0391] In use, the second end 6 of connector 1 engages with or is capable of engaging with another connector. For example, in various preferred embodiments, the second end 6 of connector 1 may engage with the end of another connector of a suitable construction. Other connectors of suitable construction as shown herein are illustrated by the following:

[0392] - Second end 52 of connector 200 (see example) Figures 21 to 25 ),

[0393] - The second end 100 of connector 80 (as shown) Figure 26, Figure 27 As shown), it provides a pair of convex connecting fingers 53 in the form of a pair of locking fingers 54 (such connector 80 is known from PCT / NZ 2012 / 000142, the patent disclosure of which is WO 2013 / 022356 granted to co-applicant Fisher & Paykel Healthcare Limited, the contents of which are incorporated herein).

[0394] - Second end 5 of connector 40 (as shown) Figure 30 , Figure 31 (As shown).

[0395] The inner surface 8 of the body includes one or more internal connection features 9, which are configured to connect to another connector that will be received inside during use.

[0396] The outer surface 10 of the body 4 includes one or more external alignment features 11 configured to align the connector or another connection thereby forming an externally aligned connection therebetween. Optionally or additionally, one or more external visual aids may be present, at least a portion of which may form an item designated 12, configured to provide an externally visible guide (e.g., a groove or cutout 57 of connectors designated 200, 40) for aligning connector 1 or another connector thereby forming an aligned connection therebetween. Such visual aids may also be configured to provide a dual function as alignment features. For example, the visual aid may have sufficient volume or tapered dimensions to transform from being a visual aid into being an alignment feature itself.

[0397] 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.

[0398] One or more internal connection features 9 may be one or more tabs, wherein the tabs are protrusions extending from the inner surface 8.

[0399] In a particular embodiment, the connection feature 9 may be oriented to be radially aligned with the corresponding external alignment feature 11 and / or the corresponding external visual aid 12.

[0400] Although the accompanying drawings show a pair of connection features 9, it will be understood that additional connection features may be provided around the inner surface 8.

[0401] To facilitate relatively easy assembly, at least one of the connection features 9 may include a longitudinally extending channel or recess 13, or the connection feature may be further divided into two or more portions to allow for such a channel or recess 13 (or slot). Such a channel or recess 13 is configured to position, retain, or accommodate 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 recess 13 (or slot) may be located at other locations surrounding the inner surface 8.

[0402] To facilitate an 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 with the connection features of another connector placed in contact with it (e.g., one or more convex locking fingers that may extend into the interior space of the body 4), for example, when the connector feature of the other connector is inserted into or received inside the body 4 at its second end. In this mode, the connection feature of the other connector is oriented (e.g., 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 configured to rotatably orient the convex connection feature of the other connector in an aligned connection orientation for connection with the connector, or at least to be aligned with one or more of the internal connection features 9 located on or around the inner surface 8 of the body 4.

[0403] It will be understood that the internal alignment feature 9 may be a surface feature extending radially inward from the surface of the inner 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.

[0404] Each tab can be shaped to provide a pair of shoulders, each shoulder being away from each other and away from the end located at the shoulder intersection (e.g., a tip or rounded tip, or a flat or curved surface, such as...). Figure 1A , Figure 2A , Figure 17 , Figure 20 (As shown) Inclined. This end of the shoulder is positioned more towards the terminal of the second end of the connector. In this way, the tab can guide or cause the convex connecting feature that contacts the shoulder to slide down the slope of each shoulder, thus being automatically rotated.

[0405] 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, any number of ribs may be present, but for example, 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 may be present. Specifically, two sets of such ribs may be present, each set comprising 3 such ribs.

[0406] There may also be two or more sets of internal alignment features 14 disposed on or around the inner surface 8 of the body 4, but most advantageously, there may be two sets of such alignment features (which may be roughly circumferentially opposite each other).

[0407] In the case of providing a set of internal alignment features 14, each set may have the same (i.e., the same) number of such internal alignment features as the other set.

[0408] In a preferred embodiment, there is a pair of internal alignment features 14 that, in use, rotatably align the pair of fingers when a pair of fingers (i.e., convex locking fingers) extending from another connector are inserted into the inner surface of connector 1 or placed to engage or contact the inner surface.

[0409] As previously discussed, the first end 5 is configured to engage with the terminal of the breathing tube. This first end may include a sleeve portion 15 to be attached to the terminal of the breathing tube, with which a suitable connection, such as a pneumatic connection, can be formed. At least a portion of the sleeve portion 15 is configured to be inserted into or positioned or accommodated in the inner surface of the lumen of the terminal of the breathing tube (i.e., for internal connection), or alternatively, the sleeve portion may be received or positioned or accommodated on the outer surface of the terminal of the breathing tube (i.e., for external connection).

[0410] Turning to the external alignment feature 11 and / or external visual aid 12, these can be external surface features extending radially outward from the outer surface 10 of the outer sidewall of the body 4. For example, these features can be in the form of tabs or protruding projections.

[0411] 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, any number of ribs may be present, but particularly preferred are: 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.

[0412] Figure 1A and Figure 2AAn alternative configuration of the external visual aid 12 of the connector is shown. The external visual aid 12 includes a raised protrusion having an end 12A (e.g., a tip or rounded tip, or a flat or curved surface) and a pair of shoulders 12B. The shoulders 12B are arranged to be angled away from each other and away from the ends located 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 being closer to the second end 6), for example, closer to the flange or lip 16.

[0413] Optionally, the external visual aid 12 may be substantially tongue-shaped, and / or substantially triangular and / or substantially gradually decrease in size towards the end.

[0414] Figure 2B The assembly shown includes connector 1, catheter C, and another connector 258. For example, the other connector 258 may be a connector as described in USSN 62 / 252149 and / or USSN 10 / 452,448 (U.S. Patent No. 6,953,354) granted to co-applicant Fisher & Paykel Healthcare, Inc., the contents of which are incorporated herein by reference.

[0415] Figure 15 and Figure 17 It shows Figure 1A and Figure 2A End view of the connector. Figure 20 It shows Figure 1A and Figure 2A The cross-section of the connector.

[0416] External alignment features (and / or visual aids) may be spaced, arranged, or positioned uniformly or equidistantly from each other around the circumference or radius of the outer surface 10.

[0417] In another configuration, the external alignment feature 11 and / or visual aid 12 may be a protrusion of a certain length extending in the 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 may gradually decrease along this length.

[0418] When a cone shape is provided, the height of the protrusion can also gradually decrease, therefore the height is:

[0419] a. Decrease in the direction extending from the base of the external alignment feature toward the terminal of the second end of the connector, or

[0420] b. Increase in the direction extending from the base of the external alignment feature toward the terminal of the second end of the connector.

[0421] Figure 3Specifically, a conical arrangement matching a) above is shown (i.e., a cone whose height decreases as the protrusion moves toward the end of the second end 6).

[0422] In other configurations, stepped protrusions are substantially disposed at or toward the base of one or each of the external alignment features, and these stepped protrusions may be formed in the external alignment feature designated as item 11 in the figures. A stepped protrusion is a projection that extends radially outward from the adjacent portion of the external alignment feature.

[0423] The stepped protrusion can be configured to co-position or provide co-positioning for a suitably shaped portion that can be bonded to it. The stepped protrusion allows engagement with a groove or cutout of a complementary shape when it contacts at least a portion of the sleeve portion of another connector to achieve a connection between connector 1 and another connector.

[0424] In an alternative, the groove or cutout is substantially disposed at or toward the base of one or each of the external alignment features, and is configured to receive a protrusion or projection of a complementary shape portion of another connector. This arrangement allows for complementary types of bonding as mentioned above. In this case, the groove or cutout can be configured to co-locate or be co-locatable to bond with a complementary protrusion or projection of at least a portion of the sleeve portion of another connector. Such a groove or cutout effectively serves as a keyway on which the key can be carried.

[0425] Keys or keyways of different shapes or contours can be used. It will be understood that any suitable shape can be used, but particularly preferred shapes or contours include: semicircles, triangles, rectangles or other straight or geometric shapes, ellipses, wedges.

[0426] The connector 1 may also include a radially extending flange or lip 16 that protrudes outward from or away from the outer surface 10 of the body 4.

[0427] When manufactured together with the outer surface 10 of connector 1, this 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 be provided for a sealing surface, on which another connector can substantially form a pneumatic connection.

[0428] The flange or lip 16 may additionally include one or both of the following: 1) one or more radially and / or longitudinally recessed or slotted regions 18a, or 2) one or more radially and / or longitudinally extending protruding regions 19a.

[0429] The flange or lip 16 may also extend sufficiently longitudinally to be configured to engage with the end of the breathing tube or a component associated with the end of the breathing tube.

[0430] The external alignment feature 11 of connector 1 can be shaped or configured 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 misaligned orientation.

[0431] Additionally or alternatively, the external alignment feature 11 of connector 1 may be shaped or configured to allow the internal connection feature 9 of the connector to connect with 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 aligned.

[0432] Optionally, the sheath 17 (such as an overmolded part) may surround or provide engagement (whether pneumatic or not) around the outer surface of the body 4. Such a sheath 17 may be used for one or more radially and / or longitudinally recessed or slotted regions 18b, and / or one or more radially and / or longitudinally extending protruding regions 19b.

[0433] The various recessed or slotted areas 18b of the sheath and / or the extended protruding areas 19b can be fully or at least partially aligned with the recessed or slotted areas 18a and / or the extended protruding areas 19a of the flange or lip 16.

[0434] In other configurations, the inner surface 8 of the body 4 may provide a way to position, hold, or place a printed circuit board (PCB) arrangement toward the second end 6 of the connector 1. For example, the PCB may be mounted on a relatively flat board and may be inserted into the body 4. The PCB may be used for various purposes, and in some specific configurations of facility circuitry, it may be used for: control, sensing (e.g., temperature, humidity, flow rate), heating (e.g., heating wire), or other electronic components for a breathing duct intended to be used as part of a breathing circuit.

[0435] Connector 1 may be provided with a sealing surface on which separate connections with other separate connectors can be made.

[0436] In the first sealing mode, connector 1 may be configured to provide a first separation surface for sealing when individually connected to it via another connector, the first surface being defined by one or both of the following:

[0437] - A radially extending flange or lip 16 protruding from the outer surface 10 of the body 4, the sidewall surface 20 facing the terminal face of another connector that can be substantially supported on the sidewall 20, or

[0438] - Inner surface 8, when connector 1 is mounted on the radially outward-facing surface of another connector, such as the radially outward-facing surface 160 of the other connector (see, for example). Figure 29B When the inner surface is on, it is substantially at or toward the terminal of the second end of the connector.

[0439] For example, when connector 1 is configured in a first sealing mode (in which the sealing surface is provided at least partially by the sidewall surface 20), this first sealing mode would require the removal or avoidance of providing grooves that extend at least radially and / or longitudinally from the flange or lip 16 and optionally also from the sheath (or cover) 17.

[0440] In the second sealing mode, connector 1 can be configured to provide a body with a second end for sealing on a second sealing surface of another connector 200, the second sealing surface being defined by the following:

[0441] -The inner sidewall surface 60, which is substantially disposed at or toward the bottom end 64 of the second end of another connector 200, wherein the body of the second end of connector 1 is substantially supported on or along the inner sidewall surface at or toward the bottom end of the other connector 200. For example, see Figure 29B Item 180.

[0442] In the third sealing mode, connector 1 can be configured to provide a body with a second end for sealing on a third sealing surface of another connector 200, the third sealing surface being defined by the following:

[0443] - The inner sidewall surface 60 of the protrusion 60A, when the body of the second end of connector 1 is substantially supported on or along the surface of the protrusion 60A of the other connector 200, the protrusion extends radially inward from the inner sidewall surface 60 of the second end 52 of the other connector 200. For example, see Figure 29A Item 140.

[0444] In the fourth sealing mode, connector 1 is configured to provide a body with a second end for sealing on a fourth sealing surface of another connector 200, the fourth sealing surface being defined by the following:

[0445] - An inner sidewall surface 60 of the second end 52 of another connector 200, wherein the inner sidewall surface extends radially outward from one or more convex 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 connector 1 is substantially supported on the radially outward surface of the shoulder. See, for example, Figure 29B Item 170.

[0446] In the fifth sealing mode, connector 1 is configured to provide a body with a second end for sealing on a fifth sealing surface of another connector 200, the fifth sealing surface being defined by the following:

[0447] - One or more radially outward surfaces of convex connecting features, specifically, the radially outward surfaces of one or more locking fingers located within the second end 52 of another connector 200. See, for example, Figure 29B Item 160.

[0448] In the sixth sealing mode, connector 1 is configured to provide a body with a 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:

[0449] - A side or lug of a shoulder extending radially outward from one or more convex connection features, specifically, a radially outward extending surface or lug extending radially outward from one or more locking fingers located within the second end 52 of another connector 200, for example, see Figure 29A Item 150, or

[0450] - A side or base extending as a platform between the outward peripheries of shoulders extending radially outward from one or more convex connection features of another connector 200, this side or base extending as a platform located within a second end of the other connector 200, for example, see Figure 29A Item 130.

[0451] Connector 1, as described herein, is particularly suitable as an upstream connector component attached to the end of a breathing tube that supplies gas to a patient interface. Connector 1 can operate as both a concave and convex connector, thereby improving the availability and capability to connect to other types of connectors (wherein these other connectors offer either convex or concave connection features).

[0452] Connector 1 may be particularly suitable as a connector for a breathing tube that provides a gas supply from a source. The aforementioned “other connector” may be, but is not limited to, a downstream patient interface end connector of a breathing tube that provides the supplied gas to a patient interface (such as, but not limited to, a full face mask, nasal cannula, oronasal mask, regardless of whether each of these is hermetically sealed or unhermetically sealed).

[0453] Figures 21 to 25 The connection between connector 200 and connector 1 is shown.

[0454] Also disclosed is another connector (as described above) or a second connector configured to engage with or be able to engage with the connector 1. The other connector may mate and / or connect and seal with at least one of the following surfaces of connector 1:

[0455] At least one outer surface 10 of the main body 4;

[0456] At least one sidewall of a radially extending flange or lip. For example, another connector may be sealed to the sidewall 20 of a radially extending flange or lip 16 protruding from the outer surface 10 of the body 4.

[0457] At least the outer surface of the sleeve or sleeve 17 disposed around the first end of the connector 1.

[0458] Figure 36 and Figure 36A A connector 220 is disclosed that is connected or mated with a second connector (e.g., connector 1) in a sealed arrangement. This connector 220 can be another connector as described above.

[0459] Connector 220 may be located at the end of the breathing tube C. Alternatively or additionally, connector 220 may form part of an adapter that facilitates the connection of two connectors, i.e., the connection of connector 1 with any other connector.

[0460] The connector has a body 201, which includes a first end 202 and a second end 203. The first end 202 engages with or is capable of engaging with the terminal of the breathing tube C or at least one component associated with the terminal of the breathing tube or snorkel (e.g., an adapter as described above). The second end 203 of the connector 220 engages with or is capable of engaging with a second connector or another connector (e.g., connector 1). The connector 220 includes an internal cavity or passage for internally receiving a second connection.

[0461] 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 or during connection of the connector with the second connector (e.g., connector 1). The internal connection features and / or alignment features 210, 211, 212 may also provide visual alignment indication, thus making it easier for the user to 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 the ability to hold the connector 220 together with the second connector.

[0462] Internal connection features and / or alignment features 210, 211, 212 may include ribs or protrusions 211 that project radially inward from the body 201 of the connector 220 or from 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 a sidewall of the inner surface of the body 201 of the connector 220. The protrusions or ribs 211 may extend substantially from or near a second end 203 (e.g., the terminal of the second end of the connector) in a direction toward a first end 202 of the connector 220.

[0463] Internal connection features and / or alignment features 210, 211, 212 may include recesses 210, 212 projecting radially outward from an imaginary or actual inner wall or inner surface. At least one recess 210, 212 may be located in a sidewall or inner surface of the connector body 201. In some embodiments, when the second connector mates with or connects to the connector 220, at least one recess may be configured to receive an associated protrusion of the second connector (e.g., protrusion 11 of connector 1).

[0464] Internal connection features and / or alignment features 210, 211, 212 may provide at least partially a sealing or sealing surface between the connector and another connector. For example, the internal connection features and / or alignment features 210, 211, 212, either on their own or in conjunction with the inner surface of the connector body, may seal with a second connector (e.g., connector 1).

[0465] Internal connection features and / or alignment features 210, 211, 212 can be shaped to match corresponding features of the second connector. A rib 211 of the connector can be configured to match a corresponding recess (e.g., longitudinal recess or slotted area 18b of connector 1 in a sleeve or socket 17) of the second connector (e.g., connector 1). Recesses 210, 212 can be configured to match corresponding ribs or protrusions (e.g., visual alignment feature 12 or protrusion 16) of the second connector.

[0466] Internal connection features and / or alignment features 210, 211, 212 may be cooperatively positioned or can be cooperatively positioned to engage with protrusions or grooves of complementary shapes on a portion of the second connector. This can be a mechanism for providing alignment functionality between connector 220 and the second connector. Internal connection features and / or alignment features 210, 211, 212 may be shaped to facilitate correct engagement orientation, such that when connector 220 contacts the second connector, these connectors are aligned to ensure that the internal connection features and / or alignment features 210, 211, 212 align with corresponding ribs or protrusions and / or grooves on the second connector. When in the engaged state, the engagement also prevents rotation of the components relative to each other.

[0467] Internal connection features and / or alignment features 210, 211, 212 may be arranged circumferentially around the inner surface of the connector. Internal connection features and / or alignment features 210, 211, 212 (e.g., ribs and / or protrusions) may be equidistantly spaced around the circumference of the inner surface of the body 201 of the connector 220. Alternatively, internal connection features and / or alignment features 210, 211, 212 may be arranged such that they are not equidistant (i.e., asymmetrical about the plane), which may allow connection between the connector 220 and the second connector only in a specific orientation.

[0468] One or more internal connection features and / or alignment features 210, 211, 212 (ribs and / or grooves) may exist, optionally with two, three, four, five, or six ribs and / or grooves. Figure 36 In the embodiment shown, there are four ribs 211.

[0469] A pair of recesses 210, 212 may be present. The pair of recesses 210, 212 may be positioned such that they are equidistant from each other around the circumference of the inner surface of the body 201 of the connector 220. Alternatively, the recesses 210, 212, 212 may be arranged such that they are not equidistant (i.e., asymmetrical about the plane). The recesses 210, 212 may be arranged to overlap such that one recess is at least partially fitted into the other recess, or one recess is at least partially defined by the other recess.

[0470] The inner surface of the body 201 of connector 220 may include at least one sealing surface or a surface for sealing. For convenience and clarity, the sealing surfaces mentioned herein are designated as a first sealing surface, a second sealing surface, and a third sealing surface. However, it will be understood that the connector may include, for example, a third sealing surface or a second sealing surface without necessarily including a first sealing surface. It should be clear that including a specifically numbered sealing surface does not require the inclusion of previously numbered sealing surfaces.

[0471] When connected or mated with or through the second connector, connector 220 may provide at least a first inner surface for sealing an outer portion of the second connector. The first inner surface is provided by a circumferential portion of the inner surface of body 201. The circumferential portion may be located at or near a second end 203 of body 201 of connector 220. The first sealing surface may be configured to be substantially continuous and substantially circumferentially positioned around an outer portion of the second connector (e.g., the sleeve or socket 17 of connector 1).

[0472] Figures 37 to 40A An example of a connector 220 is shown, which is sealed to a second connector (i.e., connector 1) by at least a first internal sealing surface.

[0473] Internal connection features and / or alignment features 210, 211, 212 may form at least a portion of the first inner surface of the body. Grooves and / or ribs or protrusions may form at least a portion of the first inner surface. Protrusions or ribs 211 may extend substantially longitudinally along the inner surface of the body 201 of the connector 220. Optionally, protrusions or ribs 211 may extend substantially from or near the second end 203 (e.g., the terminal of the second end of the connector) in a direction toward the first end 202 of the connector 220. It will be understood that the ribs and / or protrusions 211 of the connector 1 may extend only partially into or along the channel 18b.

[0474] When observed in cross-section (e.g.) Figure 37A , Figure 38A , Figure 39A and Figure 40A As shown in cross-section, the first inner surface of the body 201 of connector 220 may be substantially curved. Additionally or alternatively, the profile of the first inner surface (e.g., the radius of curvature and bending location of the first inner surface) may match the outer profile (e.g., the outer curve or curvature) of the sleeve or socket 17 of the second connector. The profile of the first inner surface may allow for a seal between the first inner surface and the sleeve or socket 17 of the second connector. Figures 37 to 40A This illustrates a case where the first inner surface is shaped to match the contour of the envelope or sleeve 17 of the second connector (e.g., connector 1).

[0475] Figures 37 to 40A A series of embodiments of connector 220 are shown, wherein a rib or protrusion 211 extends into a groove or longitudinal channel 18b of sleeve 17.

[0476] Figure 37 A connector 220 is shown, wherein a first inner surface and rib or protrusion 211 extend to or substantially extend to the end of the sleeve or sleeve 17 of the connector 1. Figure 37AA cross-section of connector 220 connected to the second connector (i.e., connector 1) is shown. It is also conceivable that the first inner surface may extend beyond the end of the sleeve or socket 17 of connector 1.

[0477] Figure 38 Connector 220 is shown, wherein the first inner surface and rib or protrusion 211 extend to a position between the outermost tip 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 second connector (which is connected to the conduit C). Figure 38A A cross-section of connector 220, which is connected to the second connector (i.e., connector 1), is shown.

[0478] exist Figures 37 to 38A In one embodiment, connector 220 may be made of a soft rubber material, so that the second end of the connector may extend over the top of sleeve 17. Figures 39 to 42A Examples of this material can also be made of soft rubber.

[0479] In embodiments where the connector does not extend beyond the maximum diameter of the envelope (e.g., Figures 39 to 42A In this context, connectors can be made of rigid materials.

[0480] Figure 39 Connector 220 is shown, wherein the first inner surface and rib or protrusion 211 are sized to extend substantially to the outermost tip of the outer contour defined by the sleeve 17 of connector 1 when in use.

[0481] Figure 40 Connector 220 is shown, wherein the first inner surface and rib or protrusion 211 extend to a position between the outermost tip 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 that is not connected to the conduit C. Figure 40A A cross-section of connector 220, which is connected to the second connector (i.e., connector 1), is shown.

[0482] Connector 220 may provide a second inner surface for sealing when connected or mated with or through the other connector. The second surface consists of a substantially radially extending flange or lip 204 (e.g., as shown in the image). Figure 36 and Figure 36A (As shown). The flange or lip 204 projects radially inward from the inner surface of the body, which serves as a sidewall surface. The flange or lip 204 may provide a face on which a corresponding face of the second connector (e.g., flange or lip 12, or terminal) is sealed.

[0483] The radially extending flange or lip 204 may include at least one of the internal connecting features or alignment features. The at least one connecting 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 recess or other surface irregularity feature disposed on the surface of the flange or lip 204. Optionally, the recess or other surface irregularity feature is a cutout in the surface.

[0484] Internal connection features and / or alignment features may be cooperatively positioned or can be cooperatively positioned to engage with protrusions or grooves of complementary shapes in a portion of the second connector. In such cases... Figures 37 to 41A In the illustrated embodiment, connector 220 may include a rib 211 that is co-positioned with a groove 18a of connector 1. Connector 220 may also include at least one groove 210 located in a flange or lip 204 that is co-positioned with a rib or protrusion 11 of the second connector (i.e., connector 1).

[0485] When the second connector mates or connects with the second inner surface, the groove can be configured to receive or accommodate an associated protrusion or other shaped feature of the second connector. At least one protrusion may be located in the sidewall or inner surface of the connector, said at least one protrusion for conforming to the groove of the other connector.

[0486] The face of the flange or lip 24 can be configured to provide a substantially planar surface, with a portion or surface of the second connector mating or engaging with said surface. The face can be oriented substantially facing the second end 203 of the connector 220. The face can mate with or seal against a sidewall, lug, lip, base, or end of the second connector. When the second connector is connector 1, the face can seal against the corresponding face of the flange or lip 16 of connector 1.

[0487] When connected or mated with or through a second connector, the connector may also provide at least a third inner surface for sealing the outer portion of 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 a first end of the connector body, and configured to be substantially continuous and substantially circumferentially positioned around the outer portion of the other connector, the third inner surface being connected to or mating with the other connector.

[0488] When connected or mated with or through the second connector, connector 220 may provide at least a third inner surface for sealing the outer portion of the second connector. The third inner surface is provided by a circumferential portion of the inner surface of body 201. This circumferential portion may be located at or near a first end 202 of body 201 of 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 may be configured to be positioned substantially continuously and substantially circumferentially around the outer portion of the second connector (e.g., the outer surface 10 of the body 4 of the connector 1).

[0489] Alignment features or connection features may form at least a portion of the third inner surface of the body. For example, such as Figures 41 to 42A As shown, the groove 212 forms a portion of the third inner surface for sealing. At least one groove may be shaped to accommodate a protrusion of the second connector, such as the visual indicator 12.

[0490] The groove can be configured to receive and seal at least a portion of the protrusion of the second connector. Then, the remaining inner surface of the body of connector 220 can be sealed with at least a portion of the outer surface 10 of the body 4 of the second connector 1.

[0491] The groove may include a pair of shoulders that slope away from each other and away from the ends (e.g., tips) located at the intersection of the shoulders. The ends of the groove are positioned substantially further toward the first end of the connector 220 than the shoulders. 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., Figure 42 (As shown). Thus, when connector 220 is connected to second connector 1, the body 201 of connector 220 can extend only partially onto second connector 1.

[0492] Alternatively or additionally, the groove may be a longitudinal channel (e.g., to accommodate) Figure 1 Rib 12)

[0493] Figures 42 to 42A Connector 220 is shown, which is at least partially sealed to the second connector (i.e., connector 1) by a third sealing surface. Figures 42 to 42A In one embodiment, connector 220 is sealed to 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).

[0494] Figure 43The connection between connector 220 and a second connector (e.g., connector 1) is shown. The second connector 1 is inserted into connector 220 such that the external alignment feature 11 or visual aid 12 mates with and optionally seals with its corresponding internal connection / alignment feature 210, 212. When the connectors are mated together, the recessed or slotted area 18B mates with (and optionally seals with) rib 211.

[0495] It will be understood that the connector may include any combination of the first sealing surface, the second sealing surface, and the third sealing surface as described above.

[0496] It will also be understood that the second connector can be as follows: Figures 37 to 41 The single item shown, or may be made from, for example Figure 42 and Figure 42A The multiple parts shown are manufactured (and refer to connector 1 as described above).

[0497] Despite the above description, additional connectors 200 and 40, which are operatively compatible with connector 1, may be provided. The following description primarily refers to... Figures 21 to 25 and Figures 28 to 35B Connectors 200 and 40 are provided as shown.

[0498] Therefore, connectors 200 and 40 are provided for use with conduits to supply gas to users.

[0499] Connectors 200 and 40 are disposed at the end of a breathing tube. Connectors 200 and 40 include a body 50 comprising a first end 51 and a second end 52, the body 50 defining an internal cavity 53 for allowing gas to pass between each of the first and second ends. In use, the first end 51 engages with or is engageable with the end of the breathing tube or at least one component associated with the end of the breathing tube. Connector 200 can be connected to the end of the breathing tube via a rotary connector attached to the body of the connector. In use, the second end 52 engages with or is engageable with another connector (such as the connector of item 1 previously described herein). The inner surface of the body includes one or more internal convex connecting features 53 extending therein, the internal convex connecting features being configured to connect with a concave end or concave portion of another connector that can receive the convex connecting feature 53. The convex internal connecting feature 53 includes one or more (optionally, a pair) locking fingers 54. Connectors 200 and 40 include one or both of the following:

[0500] a. One or more internal convex connection features 53 are surrounded by an outer wall 55, the outer surface 56 of which is tapered, gradually decreasing in size in the substantially longitudinal direction of the connector (e.g., see illustrations of tapered arrangements). Figure 30 ),

[0501] b. One or more internal convex 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 configured to align connector 40 or another connector to form an external alignment connection therebetween; and / or one or more external visual aids configured to provide, in use, externally visible guides for aligning connector 40 or another connector to form an alignment connection therebetween (e.g., see illustrations of such arrangements). Figures 28 to 29 ).

[0502] In some embodiments, the first end of connector 51 includes an outwardly flared sleeve portion. The outwardly flared portion allows the connected breathing tube to move relative to connector 40, enabling the breathing tube to flex and bend without damaging the connector. Additionally, the outwardly flared sleeve portion also allows the user to better grip the connector for easier connection and disconnection from other connectors.

[0503] The connector may include at least one fixing feature 231. Figure 28A An embodiment of connector 200 is shown, wherein the fastener 231 is formed by a recessed region 232 and a bridging portion 234. The bridging portion 234 allows connection of a tether (or a portion of a tether) to be fastened to connector 200. Other structural features (forming fastener 231) for attaching tethers to connector 200 are envisioned, such as integral rings or clamps.

[0504] Figure 28B1 It shows Figure 28A A side view of connector 200. Connector 200 may include a pair of fixing features 231 (but only a single fixing feature 231 is shown in the side view of connector 200, and the second fixing feature 231 is not visible in the view), and they may be arranged equidistantly around the periphery of connector 200, for example. Figure 28B2 The diagram shows a pair of fixed systems 231. Figure 28A A top view of connector 200. The pair of fastening systems 231 are positioned in opposite directions such that they are located on opposite sides of connector 200. A tether 240 can be attached to one or both of these fastening systems 231.

[0505] Figure 28CA tether 240 is shown that is fastened or engaged with the fixing feature 231 of the connector 200. The tether 240 includes a loop portion 241 that can be fastened around the bridging member 234 and then securely associated with the connector 200 by its own pull. The tether 240 can then be placed around the user's neck or an environmental feature to bear or support at least some of the weight of the connector 200, attached conduits, and / or interfaces.

[0506] Figure 28D The diagram illustrates a connector 200 with an attached tether 240 (optional) and a patient interface, such as a tracheostomy interface 250, via catheter C. The tracheostomy interface connects to a tracheostomy protector 253. For example, the tracheostomy protector 253 may be a protector as described in USSN 62 / 329638, granted to co-applicant Fisher & Paykel Healthcare, Inc., the contents of which are incorporated herein by reference.

[0507] Figure 28E A connector 200 without a tether is shown, which connects to a patient interface (such as a nasal cannula 251) via a catheter C. An optional clamp TC can be used and positioned along the catheter C. The clamp TC may include features for attachment to objects in the environment to help support the catheter C, interface 251, or other parts of the breathing circuit. In this way, the weight of the breathing circuit portion near the patient or user can be supported.

[0508] Figure 28F A connector 200 is shown having a tether 240 and being connected to a connector 252 via a conduit C.

[0509] Accordingly, and for example, refer to Figures 30 to 31 The connector 40 is also provided for use with a tubing that supplies gas to a user. The connector includes a body 50, which includes a first end 51 and a second end 52. The body 50 defines an internal lumen for allowing gas to pass between each of the first and second ends. In use, the first end 51 engages or is engageable with a terminal of a breathing tubing (such as a tube leading to a patient interface) or at least one component associated with the terminal of a breathing tubing. In use, the second end 52 engages or is engageable with another connector. The outer surface of the body 50 includes a sheath 65 disposed at least substantially 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 sheath 65 extending substantially longitudinally downward along at least a portion of the length of the breathing tubing that will engage or is engageable with the first end 51, and wherein the sheath is an elastic or elastomeric material, such as silicone or a thermoplastic elastomer (TPE) type material.

[0510] The diameter of the outer wall 55 of the second end 52 is the smallest at the terminal 58 of the second end (i.e., the outer diameter), and the (outer) diameter gradually increases in the direction extending from the terminal 58 of the second end 52 toward the first end 51.

[0511] One or more locking fingers 54 are substantially housed within the second end 52 of connectors 200, 40.

[0512] A space 59 is defined between the outer surface of one or more internal convex connecting features 53 (or locking fingers 54) and the inner surface 60 of the outer wall.

[0513] 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 facilitate the alignment of the outer wall with a complementary feature on another connector. The external visual aids may include graphics or other visual indicators to enable a user to correctly align and position the alignment features on the outer wall with a complementary feature on another connector, which is carried on the alignment feature 57.

[0514] In some configurations, one or more internal convex connection features 53 are oriented to be radially aligned with external alignment features 57 and / or external visual aids. Each of these provides, in combination, a visual indicator and a physical aid to ensure proper alignment of one connector with another.

[0515] As shown in the different figures, but see, for example, see Figures 24 to 25 , Figure 30 Figure 31 The external alignment feature 57 may be one or more cutouts located at the terminal 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 portion on the connector, the outer wall of which will contact the connector.

[0516] Each external alignment feature 57 may be evenly or equidistantly spaced, arranged or positioned around the circumference of the terminal face of the outer wall of the second end.

[0517] The external alignment feature 57 is configured to be cooperatively positioned or cooperatively positioned 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 engages with a protrusion of a complementary shape to the sleeve portion of the other connector.

[0518] The external alignment feature 57 of connector 40 may be shaped or configured to prevent the internal connection feature 53 of the connector from connecting to another connector (e.g., connector 1) when the external alignment feature of connector 40 and the external alignment feature of another connector (e.g., connector 1) are in misaligned orientation.

[0519] Additionally or alternatively, the external alignment feature 57 of connector 40 may be shaped or configured to allow the internal connection feature 53 of the connector to connect with 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 aligned.

[0520] Locking finger 54 may include a groove 61 on the outer surface of each finger 54. Such groove 61 provides for receiving or engaging internal connection features, such as raised protrusions or tabs, such as locking tabs 14 of a connector (e.g., indicated as item 1). Groove 61 may be shaped to receive internal connection features (e.g., item 14) of another connector (e.g., the connector indicated as item 1 herein).

[0521] The tip 62 of the locking finger can be at least partially chamfered, preferably facilitating the engagement of the locking finger 54 by being received by a connection feature, such as listed as 14.

[0522] Various shapes can be provided for the alignment feature 57 as a cut, such as: semicircle, triangle, rectangle or other straight or geometric shape, ellipse, wedge.

[0523] In various configurations, the outer wall 55 operates as a sleeve for forming a sleeve connection (whether a convex or concave connection) with another connector. In one embodiment, the outer wall is configured to function as a 22 mm convex tapered connector for another connector including a concave connection facility, and in another embodiment, the outer wall is a sleeve configured to function as a 22 mm concave tapered connector for another connector including a convex connection facility.

[0524] Connectors, or at least their bodies, can be formed from any medically suitable material, but polycarbonate (PC), polyethylene (PE), acrylonitrile butadiene styrene (ABS), or polypropylene (PP) are particularly preferred.

[0525] The inner surface of the second end 52 of the body may also include a protrusion for engaging (e.g., an interference fit) a portion of another connector that will be received within 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 extending radially outward as a shoulder 63, which extends as a platform from the inner surface of the outer wall 55. The shoulder may also optionally extend longitudinally toward the open end of the second end of the connector. Alternatively, or additionally, the inner surface of the outer wall may include a radially inwardly 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 inwardly extending protrusion 60a, the size and shape of which are configured to receive the terminal of another connector, such as a lip or flange portion of another connector. The terminal of the other connector may be received in said space as an interference fit between the outward surface of the shoulder and the inner surface of the outer wall or the protrusion 60a. See, for example, [link to relevant documentation]. Figure 32 It shows an assembly of a lip or flange (or shoulder) 91 of another connector 90, which can form such an interference fit with a connector (such as connector 200) 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 portions.

[0526] Alternatively or additionally, the base 64 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 may define a sealing surface on which the terminal or end face of another connector may engage, thereby optionally forming a pneumatic connection.

[0527] Connector 200 is configured to provide multiple separate sealing surfaces on which sealing can be performed, whether along the entire surface or along a point or specific location between component parts. Thus, connector 200 provides six separate and different sealing surface options. Each of these is described below.

[0528] In the first sealing mode, connector 200 may be configured to provide a first separation surface for sealing when individually connected to it via another connector (such as connector 1), the first surface being defined by the following:

[0529] - The end face 58 of the second end 52 of connector 200, when the connector is carried on a flange or lip 16 (or shoulder) projecting outward from or away from the outer surface of the body of another connector 1. See, for example, Figure 23This is a sealed surface.

[0530] In the second sealing mode, connector 200 can be configured to provide a second separation surface for sealing when individually connected to it via another connector, such as connector 90, the second surface being defined by the following:

[0531] - An inner sidewall surface 60 is substantially disposed at or toward 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, optionally which may include a shoulder) is substantially supported on or along the inner sidewall surface at or toward the bottom end. See, for example. Figure 29B Item 180.

[0532] In the third sealing mode, connector 200 can be configured to provide a third separation surface for sealing when individually connected to it via another connector (such as connector 90), said third surface being defined by the following:

[0533] - An inner sidewall surface 60 of protrusion 60A, the protrusion extending radially inward from the inner sidewall surface 60 of the second end 52, a portion of another connector 90 (such as a lip or flange 91, optionally which may include a shoulder) is substantially supported on or along the surface of protrusion 60A. See, for example. Figure 29A Item 140.

[0534] In the fourth sealing mode, connector 200 is configured to provide a fourth separation surface for sealing when individually connected to it via another connector (such as 90), said fourth surface being defined by the following:

[0535] - An inner sidewall surface 60 of the second end 52 of connector 200, wherein the inner sidewall surface extends radially outward from one or more convex connection features (such as one or more locking fingers 54) as a shoulder 63, a portion of another connector 90 (such as a lip or flange 91, which may optionally include a shoulder) is substantially supported on the radially outward surface of the shoulder. See, for example. Figure 29B Item 170.

[0536] In the fifth sealing mode, connector 200 is configured to provide a fifth separation surface for sealing when individually connected to it via another connector (such as 90), said fifth surface being defined by the following:

[0537] - One or more radially outward surfaces of convex connection features, specifically, the radially outward surfaces of one or more locking fingers located within the second end 52 of connector 200. See, for example, Figure 29B Item 160.

[0538] In the sixth sealing mode, connector 200 is configured to provide a sixth separation surface for sealing when individually connected to it via another connector (such as 90), said sixth surface being defined by one or both of the following:

[0539] - A side or lug of a shoulder extending radially outward from one or more convex connection features, specifically, a radially outward extending surface or lug extending radially outward from one or more locking fingers located within the second end 52 of connector 200 (e.g., see...). Figure 29A Item 150); or

[0540] - The side or base of a platform extends between the outer periphery of a shoulder that extends radially outward from one or more convex connecting features and the inner surface of the wall (e.g., see...). Figure 29A Item 130).

[0541] In other configurations, optionally, a sleeve 65 may be disposed around a first end 51 of the connector body 50, and optionally may at least partially overlap a portion of a second end 52 of the connector body. This sleeve 65 may generally be an overmolded material overmolded around the connector body 50, or the sleeve may be a pre-formed component assembled into place. Alternatively, the sleeve may be pre-formed such that it can then slide into place over or be placed on the connector body.

[0542] The dimensions of the envelope 65 can be set to provide a relatively smooth or uninterrupted outer surface profile, wherein the outer surface of the outer wall substantially abuts or substantially adjacent to the intersection 66 with the envelope.

[0543] The envelope may include an indicator of the connector that is positioned therewith (i.e., the envelope), or may provide an indication of the size of a particular component or part associated with the connector (optionally, such as a patient interface, like a nasal cannula or mask, or other such interface). Such an indicator may be color-coded.

[0544] The dimensions of the envelope 65 can be configured such that, when substantially adjacent to or adjacent to the outer surface of the connector's outer wall, it transitions from a substantially circular outer surface profile to a substantially (optionally, entirely) square outer surface profile that surrounds the first end of the connector body. In this way, the user may be able to apply greater torque or force to disconnect the connector 40 from its engagement with another connector.

[0545] For example, see specific references Figures 34A to 34C As shown, the envelope 65 transitions from a generally circular outline (indicated by item 120) in region 121 (where the envelope 65 intersects with or is substantially adjacent to the body of the connector 40) to a generally more square or linear shape in region 122.

[0546] Figure 30 and Figure 35 Also shown is a rotary connector component 67 with threads 123 for engaging with the terminal threads of a conduit to be coupled, and thus in fluid communication with the inner cavity of connector 40.

[0547] The envelope 65 may extend substantially from the second end 52 of the connector body 50 to overlap the outer surface of a breathing tube or breathing cannula that is engaged or capable of engaging when the connector is in use, or the envelope may extend to overlap at least a portion of a component associated with the end of the breathing tube.

[0548] The outer surface of the envelope can be textured or otherwise surface-treated to increase friction or grip, allowing the user to apply force or torque to the envelope (and consequently to the connector).

[0549] The envelope may include one or more splines 124 or other inwardly projecting portions on its inner surface for engagement or fitting into a suitably shaped recess or groove 70 on the outer surface of the body 50 to which the envelope will be connected. See, for example, [link to relevant documentation]. Figure 33A The sleeve has been partially made transparent, and then the slot 70 is 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 that the sleeve will inadvertently rotate around the body when the user applies torque (e.g., when the user attempts to disconnect this connector 40 from a connection with another connector, such as connector 1). Figure 33B and Figure 34C The arrangement of the envelope 65 on itself is shown, and the spline 124 or other protrusions become more apparent.

[0550] It will be understood that the envelope 66 may be an elastic or elasticized material, for example, it may be silicone or thermoplastic elastomer (TPE).

[0551] In various configurations, the envelope 65 can at least partially help alleviate strain otherwise applied to the joint or connection formed between the breathing tube and the component associated with the first end or the first end 51.

[0552] Another component that can be associated with connectors 200 and 40 (e.g., such as...) Figure 29 The rotary connector component 67 shown is a rotary arrangement. Its purpose is to provide a connection to the end of the conduit, forming a rotary (or axially rotatable) connection with connectors 200, 40 and connector body 50.

[0553] Thus, the rotary connector component 67 is connected to at least a portion of the connector body 50 during use. The rotary connector 67 can be configured to connect to the end of a conduit, and the rotary connector can be configured to connect to the first end 51 of the connector.

[0554] The rotary connector component 67 can be connected or engaged with the end of the conduit via a threaded or threaded engagement.

[0555] The rotary connector component 67 can be connected to the connector body, allowing the connector body and the rotary connector to rotate relative to each other while preventing axial relative movement.

[0556] 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 restrict the positioning of the surface 68 therein in a manner that allows the rotary connector component 67 to be axially oriented with respect to the connector body, and allows the one or more surfaces 68 to rotate radially. In this way, a rotary connection is formed with the connector body.

[0557] Figure 35A and Figure 35BA 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 insertion of the rotary connector component 67. Optionally, the protrusion 125 may also include a substantially flat side in a direction perpendicular to the connector body, the side being configured to prevent relative axial movement of the rotary connector component 67.

[0558] The attachment arm 129 can extend 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 allows for easier insertion of the rotary connector component 67 because the attachment arm 129 can flex outward to accommodate the insertion of the rotary connector component 67.

[0559] The attachment arm 129 may be surrounded by a cutout region 128, which allows the attachment arm to flex relative to the connector body. The cutout region 128 may be arranged around the attachment arm 129 to improve flexibility, at least in the direction radially outward from the connector 40.

[0560] The attachment arm 129 may include a recess configured to receive a portion (e.g., surface 68) of the rotary connector component 67.

[0561] The above description of the present invention includes the preferred embodiments of the invention. Modifications may be made to the present invention without departing from its scope.

Claims

1. A connector disposed at the end of a breathing tube, the connector comprising: A body comprising a first end and a second end, the body defining an internal cavity for allowing gas to pass between each of the first end and the second end. The first end, in use, engages with or is capable of engaging with the terminal of the breathing tube and / or a component associated with the terminal of the breathing tube. The second end, in use, engages with or can engage with another connector, and The inner surface of the body includes one or more internal connection features configured to connect with another connector receivable therein, the one or more internal connection features being surface features extending radially inward from the surface of the inner sidewall of the body. The outer surface of the body includes one or more external alignment features configured to align the connector or another connector to form an external alignment connection therebetween. The internal connection feature is oriented to be radially aligned with the one or more external alignment features; as well as The external alignment feature is configured to bond complementaryly to the other connector.

2. The connector as claimed in claim 1, wherein, One or more external vision aids are configured to provide an externally visible guide when in use, the externally visible guide being used to align the connector or another connector thereby forming an alignment connection therebetween.

3. The connector as claimed in claim 1, wherein, The one or more internal connection features include one or more protrusions.

4. The connector as claimed in claim 3, wherein, The one or more tabs are protruding projections.

5. The connector as claimed in claim 2, wherein, The internal connectivity features are oriented to be radially aligned with the one or more external visual aids.

6. The connector as claimed in claim 1, wherein, There exists a pair of the aforementioned internal connection features.

7. The connector as claimed in claim 1, wherein, The inner surface includes one or more internal alignment features configured to align at least one connection feature of another connector to be received within it to form an alignment connection orientation.

8. The connector as claimed in claim 1, wherein, The inner surface includes one or more internal alignment features configured to rotatably orient a convex connection feature of another connector to an aligned connection orientation for connection with the connector, or at least to connect with the one or more internal connection features located on or around the inner surface of the body.

9. The connector as claimed in claim 7, wherein, The internal alignment feature is a surface feature that extends radially inward from the surface of the internal sidewall of the body.

10. The connector as claimed in claim 7, wherein, The internal alignment features include one or more protrusions.

11. The connector of claim 10, wherein, The one or more tabs are protruding projections.

12. The connector of claim 10, wherein, The tab includes a pair of shoulders that are angled away from each other and away from the end of the tab located at the intersection of the shoulders, and the end of the tab is positioned toward the terminal of the second end of the connector to a greater extent than the shoulders.

13. The connector as claimed in claim 7, wherein, The internal alignment feature is one or more ribs extending in the longitudinal direction of the connector and along the inner surface.

14. The connector as claimed in claim 13, wherein, The inner surface is the surface of the inner sidewall of the main body.

15. The connector as claimed in claim 1, wherein, The first end is configured to engage with the terminal end of the breathing tube.

16. The connector of claim 15, wherein, The first end includes a sleeve portion that is attached to and pneumatically connected to the terminal of the breathing tube.

17. The connector of claim 16, wherein, At least a portion of the sleeve portion may be inserted into the inner surface or cavity of the terminal of the breathing tube or will be positioned or accommodated in the inner surface or cavity, or at least a portion of the sleeve portion may be received on or will be positioned or accommodated on the outer surface of the terminal of the breathing tube.

18. The connector as claimed in claim 1, wherein, The external alignment feature and / or the external visual aid includes one or more external surface features extending radially outward from the outer surface of the outer sidewall of the body.

19. The connector as claimed in claim 1, wherein, The external alignment features include one or more protrusions.

20. The connector of claim 19, wherein, The one or more tabs are protruding projections.

21. The connector as claimed in claim 1, wherein, The external alignment feature is one or more ribs or protrusions extending in the longitudinal direction of the connector and along the outer surface.

22. The connector of claim 21, wherein, The outer surface is the surface of the outer sidewall of the body, wherein the one or more ribs or protrusions include a pair of shoulders that are sloping away from each other and away from the ends of the ribs or protrusions at the intersection of the shoulders, and the ends of each rib or protrusion are positioned toward the terminal of the second end of the connector with a greater extent than the shoulders, wherein the one or more ribs or protrusions are tongue-shaped and / or triangular and / or gradually decrease in size toward the ends.

23. The connector as claimed in claim 1, wherein, A stepped protrusion is provided at or toward the base of one or each of the external alignment features, the stepped protrusion being a protrusion that extends radially outward more than the adjacent portion of the external alignment feature.

24. The connector of claim 23, wherein, The stepped protrusion is configured to be cooperatively positioned or cooperatively positioned so that, during connection between the connector and another connector, the stepped protrusion engages with a groove or cutout of a complementary shape to at least a portion of the sleeve portion of the other connector.

25. The connector as claimed in claim 1, wherein, A groove or cutout is provided at or toward the base of one or each of the external alignment features, the groove or cutout being configured to receive a protrusion or projection of a complementary shape portion of another connector.

26. The connector as claimed in claim 1, wherein, A radially extending flange or lip protrudes from the outer surface of the body.

27. The connector of claim 26, wherein, The flange or lip includes one or both of the following: One or more radial and / or longitudinal recessed or slotted areas, or One or more radially and / or longitudinally extending protruding regions.

28. The connector of claim 26, wherein, The sheath provides pneumatic engagement between the outer surface of the body and the end of the breathing tube.

29. The connector of claim 28, wherein, The sheath is a molded sheath that pneumatically connects the first end of the connector to the end of the breathing tube.

30. The connector of claim 28, wherein, The sheath includes one or both of the following: One or more radial and / or longitudinal recessed or slotted areas, or One or more radially and / or longitudinally extending protruding regions.

31. The connector of claim 30, wherein, The recessed or slotted area and / or the extended protruding area of ​​the sheath are wholly or at least partially aligned with the recessed or slotted area and / or the extended protruding area of ​​the flange or lip.

32. The connector of claim 1, wherein the other connector is configured to engage with or be able to engage with the connector.

33. A connector, wherein the connector is configured to engage or be able to engage with a second connector, the second connector being configured as the connector of claim 1.

34. A breathing tube assembly, the breathing tube assembly comprising: Breathing tube, and The connector as claimed in claim 1, The connector is either attached to, associated with, or connected to the breathing tube.

35. A connector assembly, the connector assembly comprising: The first connector, which is the connector as described in claim 1, and Second connector.

36. A connector assembly comprising a first connector and a second connector, the first connector being configured to connect to the second connector. The first connector includes: A first connector body includes a first end and a second end, and the first connector body internally defines an inner cavity for allowing gas to pass between each of the first end and the second end. The first end, in use, engages with or is capable of engaging with the terminal of the breathing tube and / or a component associated with the terminal of the breathing tube, and The second end, during use, engages with or can engage with the second connector, and The inner surface of the first connector body includes one or more first internal connection features, wherein the one or more internal connection features are surface features extending radially inward from the surface of the inner sidewall of the first connector body, and The outer surface of the first connector body includes one or more first external alignment features; The first internal connection feature is oriented to be radially aligned with the one or more first external alignment features; The second connector includes: A second connector body, comprising a first end and a second end, wherein the body internally defines a cavity for allowing gas to pass between each of the first end and the second end. The first end, in use, engages or is capable of engaging with the terminal of the breathing tube or a component associated with the terminal of the breathing tube, and The second end, in use, engages with or can engage with the first connector, and The inner surface of the second connector body includes one or more second internal connection features. An outer wall surrounding the one or more second internal connection features, the outer wall or at least its outer surface including one or more second external alignment features; The one or more second internal connection features are oriented to be radially aligned with the one or more second external alignment features; The first external alignment feature is configured to be complementary to the second external alignment feature of the second connector; and When the first external alignment feature of the first connector and the second external alignment feature of the second connector are aligned, the first internal connection feature of the first connector and the second internal connection feature of the second connector are oriented for connection.

37. The connector assembly of claim 36, wherein when the external alignment feature of the first connector and the external alignment feature of the second connector are in a misaligned orientation, connection between the internal connection feature of the first connector and the internal connection feature of the second connector is prevented.

38. The connector assembly of claim 36, wherein the first connector is defined by the connector of claim 1.

39. The connector assembly of claim 36, wherein the second connector is defined by the connector of claim 1.

Images