Devices used in respiratory support systems

Abstract

To provide a connector for a component of a medical respiration circuit.SOLUTION: A connector includes an inside body (200) and an outside body (400). The inside body (200) and the outside body (400) are separate components. The inside body (200) includes a holding mechanism configured to engage with another connector. The outside body (400) is configured to enclose the inside body (200) at least partially. The outside body (400) includes a tube engagement mechanism.SELECTED DRAWING: Figure 5

Description

Technical Field

[0005] ,

[0001] The present disclosure generally relates to connectors provided at the distal end of a conduit. More particularly, the present disclosure relates to a connector that is releasable but secure for connecting the end of a medical breathing circuit to another device (e.g., a humidifier or flow generator or another conduit) of the circuit, which forms part of a medical breathing conduit forming part of a medical breathing circuit.

Background Art

[0002] Alternative forms of connectors for connecting to a device forming part of a breathing circuit, such as a medical breathing conduit, at the end of the conduit are desirable.

[0003] In particular, providing such connectors that are releasable but secure provides certain advantages. For example, a secure connection between the distal end of the conduit and a device (such as a flow generator like a humidifier or blower) or between two conduits provides certainty of delivery of the desired or intended respiratory therapy to the operator or user (and patient).

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of some embodiments disclosed herein is to provide a connector for use in a medical breathing circuit or respiratory assistance system that at least somewhat facilitates an improvement over what has been described above or at least provides useful options to the public or medical professionals.

Means for Solving the Problems

[0005] In a first embodiment, a connector is provided for a component of a medical respiratory circuit, the connector comprising an inner body and an outer body, which are separate components, the inner body having a retaining mechanism configured to engage with another connector, and the outer body being configured to at least partially surround the inner body, the outer body having a tube engagement mechanism.

[0006] In one embodiment, the inner body further includes a sealing mechanism configured to provide a seal between the inner body and other connectors.

[0007] In one embodiment, at least a portion of the inner body includes a first material, and at least a portion of the outer body includes a second material.

[0008] In one embodiment, the first material is harder than the second material.

[0009] In one embodiment, the retaining mechanism for the inner body includes a bending region containing a first material.

[0010] In one embodiment, the holding mechanism includes a lever that is movable relative to the main body around a bending region.

[0011] In one embodiment, the lever has a retaining portion on one side of the bending region and an operating portion on the other side of the bending region.

[0012] In one embodiment, the lever has a holding portion in one part of the bending region and an operating portion in another part of the bending region.

[0013] In one embodiment, the retaining portion of the lever or each lever comprises a first material.

[0014] In one embodiment, the operating part of the lever or each lever includes a first material.

[0015] In one embodiment, the entire holding mechanism includes a first material.

[0016] In one embodiment, the retaining mechanism includes two levers.

[0017] In one embodiment, the distance between the retaining portions of the two levers in the disengaged configuration is the same as or less than that distance in the engaged configuration.

[0018] In one embodiment, the distance between the retaining portions of the two levers in the engaged configuration is the same as that distance in the disengaged configuration.

[0019] In one embodiment, the outer body has a cutout portion that allows a part of the inner body to be located within the outer body and a part of the inner body to be located outside the outer body.

[0020] In one embodiment, a part of the inner body located outside the outer body is the retaining mechanism.

[0021] In one embodiment, the bending region is provided by a bridge.

[0022] In one embodiment, the bridge has a feature for aligning the bridge with the outer body.

[0023] In one embodiment, the feature is an alignment boss.

[0024] In one embodiment, the bridge is disposed between the operating portion and the retaining portion.

[0025] In one embodiment, the bridge includes a strengthening feature.

[0026] In one embodiment, the strengthening feature includes a stepped portion at the intersection between the operating portion and the bridge.

[0027] In one embodiment, the strengthening feature includes two stepped portions extending towards each other from both sides of the lever towards the central plane of the bridge.

[0028] In one embodiment, the reinforcing feature includes a thick portion of the bridge.

[0029] In one embodiment, the thick portion is provided at the intersection of the operating portion and the bridge.

[0030] In one embodiment, the operating portion includes ribs that limit the bending of the operating portion.

[0031] In one embodiment, the entire inner body includes a first material.

[0032] In one embodiment, the first material has a higher Young's modulus than the second material.

[0033] In one embodiment, the second material includes a polyolefin.

[0034] In one embodiment, the second material includes polypropylene.

[0035] In one embodiment, the first material includes polyoxymethylene.

[0036] In one embodiment, the lumen of the inner body and the lumen of the outer body are substantially aligned.

[0037] In one embodiment, the lumen of the inner body and the lumen of the outer body are coaxial.

[0038] In one embodiment, the connector further includes an inner and outer body sealing mechanism configured to seal both the inner body and the outer body, and an inner and outer body holding mechanism configured to hold both the inner body and the outer body, and the inner and outer body sealing mechanism and the inner and outer body holding mechanism are separate mechanisms.

[0039] In one embodiment, the inner and outer body sealing mechanism is further configured to hold both the inner body and the outer body.

[0040] In one embodiment, the inner and outer body sealing mechanisms include projections. Optionally, the sealing mechanism is an annular sealing projection.

[0041] In one embodiment, the inner body and outer body sealing mechanism include complementary recesses.

[0042] In one embodiment, the inner body includes a projection, and the outer body includes a recess. In one embodiment, the annular sealing projection includes an angled cross-sectional contour.

[0043] In one embodiment, the annular sealing projection is provided on the outer surface of the inner body and is configured to be in an interlocking state with the inner surface of the outer body.

[0044] In one embodiment, the inner body and outer body retaining mechanism include projections, preferably overhangs.

[0045] In one embodiment, the inner body and the outer body retaining mechanism include complementary recesses or apertures.

[0046] In one embodiment, a complementary recess or aperture is defined by one or more walls, and each of its or one of the recesses is positioned within the complementary recess or aperture without contacting one or more walls.

[0047] In one embodiment, the inner body and the outer body retaining mechanism projections are annular projections and annular retaining projections.

[0048] In one embodiment, the projection includes an angled cross-sectional contour.

[0049] In one embodiment, the annular retaining projection has a rounded cross-sectional contour.

[0050] In one embodiment, the projection is configured to be interlocked with the inner surface of the outer body.

[0051] In one embodiment, the complementary recess or aperture is an annular recess or aperture.

[0052] In one embodiment, the inner body and the outer body retaining mechanism projections include complementary recesses or apertures, the complementary recesses or apertures being annular recesses, apertures, or concaves.

[0053] In one embodiment, the annular sealing projection and the annular retaining projection have different diameters.

[0054] In one embodiment, the annular sealing projection and the annular retaining projection have different cross-sectional contours.

[0055] In one embodiment, the annular retaining projection has a rounded cross-sectional contour.

[0056] In one embodiment, the annular retaining projection has an angled cross-sectional profile.

[0057] In one embodiment, the inner and outer body sealing mechanism includes an interlocking fit between a tapered wall of the inner body and a complementary tapered wall of the outer body.

[0058] In one embodiment, the end portion of the inner body extends beyond the end portion of the outer body.

[0059] In one embodiment, the end portion has a larger diameter than the rest of the inner body.

[0060] In one embodiment, the inner body includes a wall that is tapered outward toward the end.

[0061] In one embodiment, the diameter of the inner wall of the inner body at the end is greater than the diameter of the rest of the inner wall.

[0062] In one embodiment, the inner wall of the end portion forms a smooth and / or continuous contour with the inner wall of the inner body.

[0063] In one embodiment, the inner body is provided as a separate component independent of the tube or without tube connection features.

[0064] In one embodiment, the outer body is provided with a tube connection feature, and the inner body does not have a tube connection feature.

[0065] In one embodiment, the inner body does not include the tube connection feature.

[0066] In one embodiment, the outer body includes a tube connection feature, and once the assembly of the inner and outer bodies is fabricated, the assembly is connected to the tube only via the tube connection feature of the outer body.

[0067] In another embodiment, a combination of the connector described above, a second connector and a tube is provided, wherein the second connector has an internal passage, the inner body is at least partially located within the internal passage of the second connector, and a retaining mechanism engages with the second connector, and a tube engagement mechanism engages with the tube.

[0068] In one embodiment, the second connector has one or more recesses, and the retaining mechanism engages with one or more of these recesses.

[0069] In one embodiment, a combination with a second connector is provided, the second connector having an internal passage, and the inner body is at least partially located within the internal passage of the second connector such that the sealing mechanism substantially seals with the internal passage and the retaining mechanism engages with the outside of the second connector.

[0070] In one embodiment, a combination with a second connector is provided, the second connector having an internal passage, and when the connector is connected to the second connector and the tube, the inner body is at least partially located within the internal passage of the second connector such that the sealing mechanism substantially seals with the internal passage and the retaining mechanism engages with the outside of the second connector.

[0071] A connector for a component of a medical respiratory circuit, comprising a body that defines a gas path and has a holding mechanism with a manually operable feature portion, and a flexible elastomer cover configured to extend over the operable feature portion while allowing the operable feature portion to be manually operated.

[0072] A connector for a component of a medical respiratory circuit, comprising a body that defines a gas path and has a holding mechanism with a manually operable feature portion, and a flexible elastomer cover configured to extend over the operable feature portion and allowing the operable feature portion to be manually operated, comprising at least one thickened portion and at least one thinned portion.

[0073] In one embodiment, the holding mechanism is a lever that is movable relative to the main body around a bent portion or pivot.

[0074] In one embodiment, the lever has a retaining portion on one side of the bending portion or pivot and an operating portion on the other side of the bending portion or pivot.

[0075] In one embodiment, the elastomer cover has a thickened portion corresponding to the working part.

[0076] In one embodiment, the thickened portion is shaped to conform to the outer shape of the working part.

[0077] In one embodiment, the thickened portion has an externally distinctive feature.

[0078] In one embodiment, the elastomer cover has a thin portion that connects the thick portion to the rest of the elastomer cover.

[0079] In one embodiment, the elastomer cover has a base with a thickened shoulder.

[0080] In one embodiment, the elastomer cover has a thick shoulder portion adjacent to the retaining portion.

[0081] In one embodiment, the elastomer cover is friction-fitted to the body or fitted by an interlocking mechanism.

[0082] In one embodiment, the body is made of hard plastic.

[0083] In one embodiment, the elastomer cover includes a shape that substantially conforms to the outer shape of the main body.

[0084] In one embodiment, the elastomer cover is connected to the main body and the key.

[0085] In one embodiment, the elastomer cover has a recess that engages with a complementary flange of the main body.

[0086] In one embodiment, the body has one or more ribs that support the cover.

[0087] In one embodiment, the connector further includes at least one electrical contact.

[0088] In one embodiment, the main body has a material that hermetically seals the area around the electrical connection.

[0089] In one embodiment, the material has ribs that support the cover.

[0090] In another embodiment, a combination of the connector described above and a second connector is provided, and the retaining mechanism engages with the second connector.

[0091] In another embodiment, a combination of the connector described above and a second connector is provided, and when the connector is connected to the second connector and the tube, the retaining mechanism engages with the second connector.

[0092] In one embodiment, the second connector has one or more recesses, and the retaining mechanism engages with one or more of these recesses.

[0093] In one embodiment, the combination further includes a tube, the connector includes a tube engagement mechanism, and the tube engagement mechanism engages with the tube.

[0094] In another embodiment, a connector is provided for a component of a medical respiratory circuit, the connector comprising a body having a projection that defines a gas path and extends outward, and a sealing member located between the outward-extending projection and the end of the body.

[0095] In one embodiment, the sealing member is positioned at a certain distance from the end portion.

[0096] In one embodiment, the gas path is defined by an inner wall that is tapered outward toward the end.

[0097] In one embodiment, the main body has an outer wall that is tapered outward toward the end.

[0098] In one embodiment, the diameter of the inner and / or outer wall of the end portion is greater than the diameter of the rest of the body.

[0099] In one embodiment, the main body has an assembly guide that extends from the end portion toward the sealing member.

[0100] In one embodiment, the main body has a shoulder portion between the sealing member and the end portion.

[0101] In one embodiment, the projection extends in a direction generally parallel to the longitudinal axis of the body.

[0102] In one embodiment, the body includes a plurality of outwardly extending protrusions.

[0103] In one embodiment, one or more of the outward-extending projections have angled or tapered ends that act as alignment guides.

[0104] In another embodiment, a connector is provided for a component of a medical respiratory circuit, the connector being configured to connect a second connector having an internal passage, the connector comprising a body configured to be at least partially located within the internal passage of the second connector, the body having a sealing mechanism that seals with the internal passage, and a retaining mechanism that engages with the outside of the second connector.

[0105] In another embodiment, a connector is provided for a component of a medical respiratory circuit, the connector being configured to connect a second connector having an internal passage, the connector comprising a body having a sealing mechanism for sealing with the internal passage and a body having a sealing mechanism for sealing with the internal passage, the retaining mechanism for engaging with the outside of the second connector, the retaining mechanism comprising a lever movable relative to the body about a bending region, the lever having a retaining portion on one side of the bending region and an operating portion on the other side of the bending region.

[0106] In one embodiment, the sealing mechanism includes a sealing member.

[0107] In one embodiment, the sealing member is or includes a wiper seal.

[0108] In one embodiment, the sealing member is or includes an O-ring.

[0109] In one embodiment, the body has a recess for receiving a sealing member.

[0110] In one embodiment, the sealing member has a stationary outer diameter, and the stationary outer diameter of the sealing member is larger than the inner diameter of the internal passage it seals.

[0111] In one embodiment, the holding mechanism includes a lever that is movable relative to the main body around a bending region.

[0112] In one embodiment, the lever has a retaining portion on one side of the bending region and an operating portion on the other side of the bending region.

[0113] In one embodiment, the retaining portion includes a projection extending toward the center of the connector.

[0114] In one embodiment, the projection is angled with respect to a central axis extending through the center of the connector.

[0115] In one embodiment, the projection is angled at approximately 85° to 115°, more preferably 90° to 110°, even more preferably 93° to 102°, and most preferably 95° to 99°.

[0116] In one embodiment, the bending region is provided by a bridge.

[0117] In one embodiment, the holding mechanism includes two levers.

[0118] In one embodiment, the movement of the working part toward the center of the connector causes the movement of the retaining mechanism toward the center of the connector.

[0119] In one embodiment, the distance between the holding portions of the two levers in the disengaged state is the same as or less than the distance in the engaged state.

[0120] In one embodiment, the distance between the holding portions of the two levers in the disengaged state is the same as the distance in the engaged state.

[0121] In one embodiment, the body is an inner body, and the connector further includes an outer body, the outer body having a cutout that allows a portion of the inner body to be located inside the outer body and a portion of the inner body to be located outside the outer body.

[0122] In one embodiment, the body is an inner body, and the connector further includes an outer body.

[0123] In one embodiment, a portion of the inner body is located inside the outer body, and the retaining mechanism is located outside the outer body.

[0124] In one embodiment, the bridge has a feature portion that aligns the bridge with the cut portion.

[0125] In one embodiment, the feature is an alignment boss.

[0126] In one embodiment, the body is an inner body, and the connector further includes an outer body, an inner body and outer body sealing mechanism configured to seal the inner body and the outer body together, and an inner body and outer body holding mechanism configured to hold the inner body and the outer body together, wherein the inner body and outer body sealing mechanism and the holding mechanism are separate mechanisms.

[0127] In one embodiment, the inner body and outer body sealing mechanism is further configured to hold both the inner body and the outer body together.

[0128] In one embodiment, the inner and outer body sealing mechanisms include projections. Optionally, the sealing mechanism is an annular sealing projection.

[0129] In one embodiment, the inner body and outer body sealing mechanism include complementary recesses.

[0130] In one embodiment, the inner body includes a projection, and the outer body includes a recess.

[0131] In one embodiment, the annular sealing projection includes an angled cross-sectional contour.

[0132] In one embodiment, the annular sealing projection is provided on the outer surface of the inner body and is configured to be in an interlocking state with the inner surface of the outer body.

[0133] In one embodiment, the inner body and outer body retaining mechanism include projections, preferably overhangs.

[0134] In one embodiment, the inner body and the outer body retaining mechanism include complementary recesses or apertures.

[0135] In one embodiment, a complementary recess or aperture is defined by one or more walls, and each of its or one of the recesses is positioned within the complementary recess or aperture without contacting one or more walls.

[0136] In one embodiment, the inner body and the outer body holding mechanism projections are annular projections.

[0137] In one embodiment, the complementary recess or aperture is an annular recess or aperture.

[0138] In one embodiment, the annular sealing projection and the annular retaining projection have different diameters.

[0139] In one embodiment, the annular sealing projection and the annular retaining projection have different cross-sectional contours.

[0140] In one embodiment, the annular retaining projection has a rounded cross-sectional contour.

[0141] In one embodiment, the annular retaining projection has an angled cross-sectional profile.

[0142] In one embodiment, the inner and outer body sealing mechanism includes an interlocking fit between a tapered wall of the inner body and a complementary tapered wall of the outer body.

[0143] In one embodiment, the end portion of the inner body extends beyond the end portion of the outer body.

[0144] In one embodiment, the inner body has a tapered outer surface at its end, which has a wider diameter than the rest of the inner body.

[0145] In another embodiment, a combination of the connector described above and a second connector is provided, the second connector having an internal passage, the inner body being at least partially located within the internal passage of the second connector such that the sealing mechanism substantially seals with the internal passage, and the retaining mechanism engages with the outside of the second connector and the retaining mechanism engages with the second connector.

[0146] In one embodiment, the second connector has one or more recesses, and the retaining mechanism engages with one or more of these recesses.

[0147] In one embodiment, once connected, the connector can withstand a separation force of approximately 30N or more.

[0148] In one embodiment, when connected, the connector can withstand a separation force of approximately 50N or more.

[0149] In another embodiment, a connector is provided for a component of a medical respiratory circuit, the connector including a tube connection portion that engages with a tube, the tube connection portion defining a gas path, and the tube connection portion having first projections and second projections that enter into a helical path.

[0150] In one embodiment, the helical path has a first edge, a second edge, and a width between the first and second edges, and the first projection is positioned at the first edge of the path.

[0151] In one embodiment, the second projection is positioned at the first edge of its path.

[0152] In one embodiment, the second projection is positioned at the second edge of its path.

[0153] In one embodiment, the second projection is positioned between the first edge of the path and the second edge of the path.

[0154] In one embodiment, the connector has electrical contacts that make electrical connections with wires inside a tube.

[0155] In one embodiment, the electrical contacts are configured to make an electrical connection with the device.

[0156] In one embodiment, the connector has an alignment feature that guides the wire inside the tube toward an electrical contact.

[0157] In one embodiment, the alignment feature allows for lateral guidance of the wire to the electrical contact when the tube is screwed onto the collar.

[0158] In one embodiment, the connector has a guide that directs the wire to an alignment feature.

[0159] In one embodiment, the connector further includes an intermediate shell that surrounds and seals the electrical contacts. Optionally, the intermediate shell includes an overmolded portion.

[0160] In one embodiment, the material of the outer body is the same as or compatible with the material of the intermediate shell.

[0161] In one embodiment, the connector has a raised wall for an intermediate shell that seals the pin inserts and wires.

[0162] In one embodiment, the connector has a retaining means for holding electrical contacts relative to an alignment feature.

[0163] In one embodiment, the connector has an electrical contact compartment with an inner wall that is tapered outward.

[0164] In one embodiment, the electrical contact includes an electrical contact assembly that includes an overmolded portion provided on the electrical contact.

[0165] In one embodiment, the electrical contact assembly includes an alignment feature portion which includes a projection configured to engage with a slot in the connector.

[0166] In one embodiment, the alignment feature includes a shoulder that engages with a recess in the connector.

[0167] In another embodiment, a respiratory assistance system is provided, comprising a flow generator, a housing having a screen and an outlet located on the upper surface of the housing, and a tube, including a connector that releasably connects the tube to the outlet, the connector including a body and a tube connection portion that engages with the tube, the body and the tube connection portion including a tube that defines a gas path, the tube connection portion extending from the longitudinal axis of the body at an angle greater than about 0° and less than about 90°.

[0168] In one embodiment, the angle is greater than approximately 5° and less than approximately 60°.

[0169] In one embodiment, the angle is greater than about 10° and less than about 40°.

[0170] In one embodiment, the angle is greater than about 15° and less than about 20°.

[0171] In one embodiment, the connector has electrical contacts that electrically connect to wires inside a tube, and the tube connection portion extends from the longitudinal axis of the electrical contacts at an angle greater than approximately 0° and less than approximately 90°.

[0172] In one embodiment, the tube connection portion is aligned axially with the end of the tube.

[0173] In another embodiment, a combination of a tube and the connector described above is provided.

[0174] In one embodiment, the material of the outer body is the same as or compatible with the material of the tube.

[0175] In another embodiment, a connector is provided for a component of a medical respiratory circuit, the connector comprising an inner body and an outer body, an inner body and outer body sealing mechanism configured to seal the inner body and the outer body together, and an inner body and outer body holding mechanism configured to hold the inner body and the outer body together, wherein the sealing mechanism and the holding mechanism are separate mechanisms.

[0176] In one embodiment, the inner body and outer body sealing mechanism is further configured to hold both the inner body and the outer body together.

[0177] In one embodiment, the inner and outer body sealing mechanisms include projections. Optionally, the sealing mechanism is an annular sealing projection. The inner and outer body sealing mechanisms may include complementary recesses. In one embodiment, the inner body includes projections, and the outer body includes recesses.

[0178] In one embodiment, the annular sealing projection includes an angled cross-sectional contour.

[0179] In one embodiment, the annular sealing projection is provided on the outer surface of the inner body and is configured to be in an interlocking state with the inner surface of the outer body.

[0180] In an alternative embodiment, the inner body includes a recess, and the outer body includes a projection.

[0181] In one embodiment, the retaining mechanism includes a projection, preferably a catch. The retaining mechanism may include complementary recesses or apertures. The retaining mechanism may include two or more catches. The retaining mechanism may include complementary recesses or apertures.

[0182] In one embodiment, a complementary recess or aperture is defined by one or more walls, and each of its or one of the recesses is positioned within the complementary recess or aperture without contacting one or more walls.

[0183] In one embodiment, the retaining mechanism projection is an annular projection. The complementary recess or aperture is an annular recess or aperture.

[0184] In one embodiment, the annular sealing projection and the annular retaining projection have different diameters.

[0185] In one embodiment, the annular sealing projection and the annular retaining projection have different cross-sectional contours.

[0186] In one embodiment, the annular retaining projection has a rounded cross-sectional profile. In another embodiment, the annular retaining projection has an angled cross-sectional profile.

[0187] In one embodiment, the inner and outer body sealing mechanism includes an interlocking fit between a tapered wall of the inner body and a complementary tapered wall of the outer body.

[0188] In one embodiment, the end portion of the inner body extends beyond the end portion of the outer body.

[0189] In one embodiment, the inner body has a tapered outer surface at the end portion having a wider outer diameter than the rest of the inner body.

[0190] Predetermined embodiments and their modifications will become apparent to those skilled in the art from the detailed description herein with reference to the following figures. [Brief explanation of the drawing]

[0191] [Figure 1A] A schematic representation of a respiratory support device in the form of a flow therapy device is shown. [Figure 1B] A perspective view of the connector, including the cover. [Figure 2] This is a perspective view showing the components of the connector in Figure 1, with the cover and intermediate shell removed. [Figure 3] Another perspective view of the connector components in Figure 2. [Figure 4] Figure 2 is a bottom-view perspective of the connector components. [Figure 5] This is another perspective view from below of the connector components in Figure 2. [Figure 6A] This is a perspective view of the connector cover. [Figure 6B] This is a perspective view of the connector cover. [Figure 6C] This is a perspective view of the connector cover. [Figure 6D] This is a perspective view of the connector cover. [Figure 7] Figure 2 is a perspective view of the inner body of the connector. [Figure 8] Figure 7 shows a perspective view from below of the inner body, along with the sealing member described herein. [Figure 9] Figure 7 is another perspective view of the inner body. [Figure 10] Figure 7 is a front view of the inner body. [Figure 11] Figure 7 is a side view of the inner body. [Figure 12] Figure 7 is a bottom view of the inner body. [Figure 13] Figure 7 is a top view of the inner body. [Figure 14] Figure 2 is a perspective view of the outer body of the connector. [Figure 15] Figure 14 is a perspective view from below of the outer body. [Figure 16] Figure 14 is a front view of the outer casing. [Figure 17] Figure 14 is a rear view of the outer casing. [Figure 18] Figure 14 is a side view of the outer body. [Figure 19] Figure 14 is a top view of the outer casing. [Figure 20]Figure 14 is a bottom view of the outer body. [Figure 21] This is a diagram showing the tube connection point and a section of the tube. [Figure 22] This specification shows cross-sectional views of the inner body of the connector and the second connector as described herein. The sealing member of the inner body of the connector is also shown. [Figure 22A] This specification shows cross-sectional views of an alternative embodiment of the inner body of the connector and a second embodiment of the connector. The sealing member of the inner body of the connector is also shown. [Figure 23] An alternative holding mechanism is shown. [Figure 24A] This shows modified forms of the sealing mechanism and retaining mechanism between the inner body and the outer body. [Figure 24B] This shows modified forms of the sealing mechanism and retaining mechanism between the inner body and the outer body. [Figure 24C] This shows modified forms of the sealing mechanism and retaining mechanism between the inner body and the outer body. [Figure 24D] This shows modified forms of the sealing mechanism and retaining mechanism between the inner body and the outer body. [Figure 25] This shows the electrical subassembly. [Figure 26] This is a perspective view showing the components of the connector in Figure 1B with the cover removed. [Figure 27] This shows a flow therapy device. [Figure 28] A side view of an alternative internal body embodiment is shown. [Figure 29] A side view of an alternative internal body embodiment is shown. [Figure 29A] A perspective view of an alternative internal body embodiment is shown. [Figure 29B] A front view of an alternative internal body embodiment is shown. [Figure 29C] A side view of an alternative internal body embodiment is shown. [Figure 29D] A side view of an alternative internal body embodiment is shown. [Figure 29E] A perspective view of an alternative internal body embodiment is shown. [Figure 29F]A side view of an alternative internal body embodiment is shown. [Figure 29G] A perspective view of an alternative internal body embodiment is shown. [Figure 30] A perspective view of an alternative embodiment of the outer body of the connector as described herein is shown. [Figure 31] A perspective view of an alternative embodiment of the outer body of the connector as described herein is shown. [Figure 31A] A perspective view of an alternative embodiment of the outer body of the connector as described herein is shown. [Figure 31B] A bottom view of an alternative embodiment of the outer body of the connector as described herein is shown. Covers (such as the cover shown in Figure 1B) and electrical subassemblies (such as the electrical subassemblies shown in Figures 2 and 25) are also shown. [Figure 31C] A front view of an alternative embodiment of the outer body of the connector as described herein is shown. The conduit and electrical subassembly are also shown. [Figure 31D] A side view of an alternative embodiment of the outer body of the connector as described herein is shown. The conduit and electrical subassembly are also shown. [Figure 31E] A perspective view of an alternative embodiment of the outer body of the connector as described herein is shown. The conduit and electrical subassembly are also shown. [Modes for carrying out the invention]

[0192] Figure 1 shows the flow therapy device 10. Overall, the device 10 includes a flow generator 11 in the form of a motor / impeller configuration, an optional humidifier 12, a controller 13, and a main housing 1000 that houses a user I / O interface 14 (including, for example, a display and input devices such as buttons and a touchscreen). The controller 13 is configured or programmed to control the components of the device, such as operating the flow generator 11 to generate a flow of gas (gas flow) to be delivered to the patient, operating the humidifier 12 (if present) to humidify and / or heat the generated gas flow, receiving user input from the user I / O interface 14 for the reconfiguration and / or user-defined operation of the device 10, and outputting information to the user (for example, on the display). The user may be a patient, a healthcare professional, or another person interested in using the device.

[0193] The patient breathing conduit 300 is coupled to the gas outlet 344 in the housing 1000 of the flow therapy device 10 and to a patient interface 17 such as a nasal cannula including a manifold 19 and nasal prongs 18. Alternatively, the patient breathing conduit 16 may be coupled to a face mask. Alternatively, the patient breathing conduit may be coupled to a nasal pillow mask and / or nasal mask and / or tracheostomy interface or any other suitable type of patient interface. The gas flow generated by the flow therapy device 10, which may be humidified, is delivered to the patient through the cannula 17 via the patient breathing conduit 16. The patient breathing conduit 16 may have a heater wire 16a that heats the gas flow passing toward the patient. The heater wire 16a is controlled by a controller 13. The patient breathing conduit 16 and / or the patient interface 17 may be considered part of the flow therapy device 10 or, instead, peripheral devices thereof. The flow therapy device 10, the respiratory conduit 16, and the patient interface 17 together form a flow therapy system.

[0194] The overall operation of the flow therapy respiratory device 10 will be known to those skilled in the art and does not need to be described in detail herein. However, overall, the controller 13 controls the flow generator 11 to generate a gas flow of a desired flow rate, controls one or more valves to control the mixing of air and oxygen or other alternative gases, and controls the humidifier 12, if present, to humidify the gas flow and / or heat the gas flow to an appropriate level. The gas flow is directed to the patient through the patient respiratory conduit 16 and cannula 17. The controller 13 can also control the heating element of the humidifier 12 and / or the heating element 16a of the patient respiratory conduit 16 to heat the gas to a desired temperature to achieve a desired therapeutic level and / or comfort for the patient. The controller 13 can be programmed with a preferred target temperature for the gas flow, or the controller 13 can determine a preferred target temperature for the gas flow.

[0195] Operating sensors 3a, 3b, 3c, 20, 25, such as flow sensors, temperature sensors, humidity sensors, and / or pressure sensors, can be placed at various locations in the flow therapy device 10 and / or the patient respiratory conduit 16 and / or the cannula 17. Outputs from the sensors are received by the controller 13, which can help the controller 13 operate the flow therapy device 10 to provide optimal therapy. In some configurations, providing optimal therapy includes meeting the patient's inspiratory demands. The device 10 may have transmitters and / or receivers 15 that enable the controller 13 to receive signals from the sensors (8) and / or control various components of the flow therapy device 10, including, but not limited to, the flow generator 11, the humidifier 12, and the heater wires 16a or accessories or peripheral devices associated with the flow therapy device 10. Furthermore or alternatively, the transmitters and / or receivers 15 may send data to a remote server or enable remote control of the device 10.

[0196] The flow therapy device 10 may include a high-flow therapy device. As used herein, “high-flow” therapy refers to the administration of gas to a patient’s airway at a relatively high flow rate that meets or exceeds the patient’s peak inspiratory demand. The flow rate used to achieve “high-flow” may be any of the flow rates listed below. The flow therapy device 10 may be any preferred type of device, but in some configurations, it may be possible to deliver high gas flow rates or high-flow therapy (e.g., air, oxygen, other gas mixtures, or any combination thereof) to assist respiration and / or treat respiratory distress. In some configurations, the gas is or contains oxygen. In some configurations, the gas contains a mixture of oxygen and ambient air. As used herein, “high-flow therapy” may refer to the delivery of gas to an adult patient at a flow rate of about 10 liters / minute (10 LPM) or more, or to a neonatal, infant, or pediatric patient at a flow rate of about 1 liter / minute (1 LPM) or more. In some configurations, for adult patients, "high-flow therapy" can refer to the delivery of gas to the patient at a flow rate of approximately 10 LPM or higher, such as approximately 10 LPM to approximately 100 LPM, or approximately 15 LPM to approximately 95 LPM, or approximately 20 LPM to approximately 90 LPM, or approximately 25 LPM to approximately 85 LPM, or approximately 30 LPM to approximately 80 LPM, or approximately 35 LPM to approximately 75 LPM, or approximately 40 LPM to approximately 70 LPM, or approximately 45 LPM to approximately 65 LPM, or approximately 50 LPM to approximately 60 LPM. In some configurations, for neonatal, infant, or pediatric patients, "high-flow therapy" can refer to the delivery of gas to the patient at flow rates of approximately 1 LPM to 25 LPM, or approximately 2 LPM to 25 LPM, or approximately 2 LPM to 5 LPM, or approximately 5 LPM to 25 LPM, or approximately 5 LPM to 10 LPM, or approximately 10 LPM to 25 LPM, or approximately 10 LPM to 20 LPM, or approximately 10 LPM to 15 LPM, or approximately 20 LPM to 25 LPM. Therefore, a high-flow therapy device used in either adult patients or neonatal, infant, or pediatric patients can deliver gas to the patient at flow rates of approximately 1 LPM to 100 LPM or any flow rate within the sub-range outlined above. The delivered gas may include a certain percentage of oxygen.In some configurations, the percentage of oxygen in the delivered gas can be approximately 20% to 100%, or 30% to 100%, or 40% to 100%, or 50% to 100%, or 60% to 100%, or 70% to 100%, or 80% to 100%, or 90% to 100%, or 100%, or 100%. High-flow therapy has been found to be effective in meeting or exceeding the patient's inspiratory requirements by increasing patient oxygenation and / or reducing the work of breathing. Furthermore, high-flow therapy can generate a flushing effect in the nasopharynx so that the anatomical dead space of the upper airway is flushed by the incoming high-flow gas stream. This creates a reservoir of fresh gas available with each breath, while minimizing reinhalation of carbon dioxide, nitrogen, etc.

[0197] The patient interface may be an unsealed interface that prevents barotrauma (tissue damage to the lungs or other organs of the respiratory system caused by pressure differences relative to the atmosphere). The patient interface may be a nasal cannula with a manifold and nasal prongs, and / or a face mask, and / or a nasal pillow mask, and / or a nasal mask, and / or a tracheostomy interface, or any other suitable type of patient interface.

[0198] As shown in Figure 27, in one embodiment, the flow therapy device 10 may include a main housing, for example, indicated by 1000. Such a main housing 1000 may have a main housing upper chassis 102 and a main housing lower chassis 103.

[0199] The main housing upper chassis 102 has a peripheral wall configuration. The peripheral wall configuration defines a humidifier or liquid chamber bay that receives a removable liquid chamber 3000. The removable liquid chamber 3000 contains a suitable liquid, such as water, for humidifying the gas delivered to the patient.

[0200] The removable liquid chamber 3000 includes an outer housing defining a liquid reservoir, a liquid chamber gas inlet port 306 that fluidly communicates with the liquid reservoir, and a liquid chamber gas outlet port 308 that fluidly communicates with the liquid reservoir. Within the liquid reservoir, baffles can be provided to define the gas flow path through the liquid chamber 3000. The lower edge of the liquid chamber 3000 includes an outwardly oriented annular flange that interacts with guide rails of the liquid chamber bay to position and hold the liquid chamber 3000 in the liquid chamber bay. The flange extends outward from the base of the peripheral wall of the liquid chamber 3000. The bottom wall of the liquid chamber 3000 is thermally conductive and is adapted to rest on a heater plate that heats the liquid inside the liquid chamber 3000.

[0201] The apparatus 10 includes a connecting manifold configuration that fluidly couples the liquid chamber 3000 to the apparatus 10. The liquid chamber 3000 can be fluidly coupled to the apparatus 10 by linear sliding of the liquid chamber 3000 in the rearward direction from a position on the front of the housing 1000 toward the rear of the housing 1000 into the liquid chamber bay. The connecting manifold configuration includes a manifold gas outlet port that fluidly communicates with a gas flow passage from the motor and / or sensor module via a fixed L-shaped elbow. The fixed L-shaped elbow receives gas from the blower outlet of the motor and / or sensor module and connects to the inlet port 306 of the liquid chamber bay 3000. The lower portion of the elbow extends downward into the gas flow passage tube to receive gas from the motor and / or sensor module.

[0202] The connection manifold configuration further includes a humidified gas return port incorporated into a removable elbow 342. The removable elbow 342 is L-shaped and further includes a patient exit port 344 that connects to a patient breathing conduit to deliver gas to the patient interface. The exit port 344 is positioned facing the front of the device 10 and in front of the screen 124 on the top surface of the housing 1000. The screen 124 is positioned facing the rear of the device 10. The manifold gas exit port, manifold gas inlet port, and patient exit port 344 each include a flexible seal, such as an O-ring seal or a T-seal (not shown), to provide a sealed gas passage between the device 10, the liquid chamber 3000, and the patient breathing conduit.

[0203] The liquid chamber gas inlet port 306 is complementary to the connecting manifold gas outlet port, and the liquid chamber gas outlet port 308 is complementary to the connecting manifold gas inlet port. The axes of these ports are preferably parallel so that the liquid chamber 3000 can be inserted into the liquid chamber bay in a linear motion.

[0204] The device 10 has air and oxygen (or alternative auxiliary gas) inlets that are in fluid communication with the motor, so that the motor can deliver air, oxygen, or a suitable mixture thereof to the liquid chamber 3000, thereby to the patient.

[0205] Overall description Referring to Figures 1B to 22, a connector 100 for a component of a medical breathing circuit is shown. The connector 100 is configured to be provided at the end of a conduit 300. In particular, the connector 100 forms part of the medical breathing circuit for a releasable but secure connection between the end of the conduit 300 and another device of the circuit. The other device may be a humidifier, a flow generator, or another conduit. If the other device is a humidifier or a flow generator, for example, the other device may be the outlet of the humidifier or flow generator. In the following description, the other device will be referred to as the second connector 800.

[0206] The connector 100 has an inner body 200 and an outer body 400. The inner body 200 and the outer body 400 define a gas passage. In one embodiment, the connector 100 is used to connect a conduit or tube 300 to a second connector 800. When assembled, the gas passage of the connector is in fluid communication with each of the conduit 300 and the second connector, thereby allowing gas to flow from the second connector through the connector to the conduit 300.

[0207] The inner body 200 and the outer body 400 are separate components. The inner body 200 has a retaining mechanism configured to engage with the second connector, which will be described in more detail later.

[0208] The outer body 400 is configured to at least partially enclose the inner body 200. When assembled together, the outer body 400 covers most of the front and back surfaces of the inner body 200. The outer body 400 has a cutout through which a portion of the inner body extends. The inner body 200 also extends slightly from the outer body 400 at its end. The end has a larger diameter than the rest of the inner body.

[0209] The outer body 400 has a tube engagement mechanism. The tube engagement mechanism connects the connector 100 and the tube 300 to each other.

[0210] The inner body 200 has a sealing mechanism configured to seal with the second connector 800. The connector also has a sealing mechanism configured to seal the inner body 200 and the outer body 400. The sealing mechanisms between the inner body 200 and the second connector 800 and between the inner body 200 and the outer body 400 provide a sealed passage from the conduit 300 to the second connector 800, where the gas flow is prevented from leaking into the surrounding environment, or at least substantially blocked.

[0211] The connector 100 has a separate retaining mechanism configured to hold both the inner body 200 and the outer body 400.

[0212] In the illustrated embodiment, the inner body 200 is a single component formed as a single part. In particular, the inner body 200 includes a first material. In some embodiments, a portion of the inner body 200 may include the first material, and other portions may include different materials. For example, the retaining mechanism of the inner body 200 includes a bending region. In some embodiments, the bending region may include the first material, and other portions of the inner body 200 may include different materials.

[0213] The tube engagement mechanism of the outer body 400 includes a second material. In some embodiments, the first material is stiffer than the second material; that is, the first material has a higher modulus of elasticity and / or flexural modulus than the second material. The first material may also have a higher flexural modulus than the second material.

[0214] The retaining mechanism includes a lever that is movable relative to the inner body 200 around the bending region. The lever has a retaining portion 203B on one side of the bending region and an operating portion 203A on the other side of the bending region. The lever may be movable by pivoting relative to the inner body. Alternatively, the lever may be movable by hinged movement relative to the inner body.

[0215] As shown in Figures 7 to 13, the retaining mechanism includes two levers. The retaining mechanism (levers) is located on the outside of the outer body 400.

[0216] The distance between the holding portions 203B of the two levers in the disengaged state is the same as or less than the distance in the engaged state.

[0217] The outer body 400 has a cutout that allows a portion of the inner body 200 to be located inside the outer body 400, and a portion of the inner body 200 to be located outside the outer body.

[0218] The bending region is provided by the bridge 205. The bridge 205 has a feature that aligns the bridge 205 with the cutout. As shown in Figure 7, this feature is an alignment boss 209.

[0219] In some embodiments, the retaining portion 203B of the lever or each lever comprises the first material. In some embodiments, the operating portion 203A of the lever or each lever comprises the first material. In some embodiments, the entire retaining mechanism comprises the first material. In some embodiments, the entire inner body 200 comprises the first material. The first material may include polyoxymethylene (POM), which is also known as acetal or acetal copolymer. In alternative embodiments, the first material may include nylon containing glass-filled nylon or acrylonitrile butadiene styrene (ABS).

[0220] In some embodiments, the second material includes polyolefin. In some embodiments, the second material includes polypropylene or high-density polyethylene.

[0221] Inner body Here, the inner body 200 will be described in detail. As mentioned above, the inner body 200 has a gas path for gas to flow between the second connector 800 and the tube 300. The gas path is defined by an inner wall that is tapered outward toward the end.

[0222] The inner body 200 is configured to be at least partially located within the internal passage of the second connector 800. As described above, the inner body 200 is inserted into the internal passage of the second connector 800. Having a connector inserted into the second connector 800 is advantageous for several reasons, one of which is that the flow path is narrowed in the direction of flow. Narrowing the flow path reduces the possibility of creating dead space in stagnant areas. Stagnant areas have various disadvantages, such as providing areas where atomized agents accumulate.

[0223] The inner body 200 includes a conduit 201, a sealing mechanism in the form of a wiper seal 202, and a holding mechanism in the form of one or more levers 203.

[0224] Connector 100 has a sealing and retention mechanism between the inner body 200 and the second connector 800. The outer surface of conduit 201 is shaped complementary to the inner surface of the second connector 800, so that the two surfaces form an airtight seal. The airtight seal can be facilitated in part by a sealing element. The sealing element may be susceptible to wear over time and may require periodic replacement. A preferred embodiment is that the seal is located at any point on conduit 201, because this means the seal only needs to last until conduit 300 is replaced.

[0225] In some embodiments, the sealing mechanism includes a sealing member. One embodiment has a seal around the periphery of the conduit 201. In the illustrated embodiment, the sealing member is or includes a wiper seal. The wiper seal may have the shape shown in the drawing. In alternative embodiments, the wiper seal may have a different cross-sectional profile, such as a T-shaped or C-shaped cross-section. In other embodiments, there may be two or more wiper seals. Furthermore or alternatively, the sealing member may be or include an O-ring or any other suitable seal. The wiper seal provides easy axial movement of the two components. The inner body 200 has a recess for receiving the sealing member. The recess wall prevents or at least substantially prevents axial movement of the seal relative to the inner member 200. This recess may be further reinforced by shoulders on the edge of the recess. The sealing member has a stationary outer diameter, and the stationary outer diameter of the sealing member is greater than the inner diameter of the portion to which the connector connects. That is, the stationary outer diameter of the sealing member is greater than the inner diameter of the gas passage of the second connector 800. The wiper seal flexes upon contact with the inner surface of the second connector 800. This provides a force between the wiper seal and the inner wall of the second connector 800 that reduces the possibility of leakage. Furthermore, because the outer diameter of the wiper seal is larger than the diameter of the inner wall of the second connector 800, a complete airtight seal is ensured even if the two components are slightly misaligned, for example, radially.

[0226] Alternatively, the seal can be provided by one or more O-rings. Alternatively, any of the sealing elements described above can be implemented on the inner surface of the second connector 800, meaning that the seal will not be replaced when the tube and connector are replaced. Alternatively, the seal can be provided by a crimp fit between the inner body 200 and the second connector 800. The crimp fit may be a tapered fit. In some embodiments, the seal can be provided by a crimp fit in one part of the inner body 200 and / or sealing member, such as an O-ring or a wiper seal. For example, the end of the inner body 200 can be flared outward to make sealing contact with the inner wall of the second connector 800.

[0227] The seal is positioned on the inner body 200 to engage with the second connector 800 before the electrical connectors of the device and connector engage. This ensures that any gas flow (which may be oxygen-enriched) is hermetically sealed away from the electrical connector before any electrical connection is made. Furthermore, this configuration prevents the user from assembling the connector 100 with the device in a way that forms an electrical connection but leaves the gas flow path unsealed. This is particularly desirable because the potential leakage of oxygen-rich gas into the electrical connection could pose a safety risk.

[0228] The inner body 200 may have a set of assembly guides 200B that help position the seal around the inner body 200. The assembly guides 200B extend from the end of the inner body 200 toward the sealing member 202. When assembling the connector 100, the seal is stretched by a tool so that it can slide over the base of the inner body 200. Once the seal is aligned with the recessed portion, the tool allows the seal to contract and enter the recessed portion. At this point, the tool aligned with the assembly guides can be withdrawn, and the seal catches on the shoulder, thereby remaining in the desired position.

[0229] The inner body 200 may have a spacer for precisely positioning the inner body 200 within the second connector 800. The spacer may be provided in the form of one or a series of outwardly extending projections 215. The projections 215 may be in the form of vertical ribs located around the outer surface of the inner body 200. The ribs 215 are substantially complementary to, corresponding to, and / or matching the diameter of the inner surface of the second connector 800, so as to provide a tight and / or gapless mating between the inner body 200 and the second connector 800. For example, there may be a space of about 0.05 mm between the ribs 215 and the second connector.

[0230] The rib 215 is configured to position a portion of the inner body 200 away from the passage wall of the second connector 800, thereby defining a space between the inner body 200 and the passage wall. The rib 215 ensures concentric alignment between the inner body 200 and the second connector 800. The rib prevents radial movement of the inner body 200 within the second connector 800. This ensures that the inner body 200 is positioned at the intended distance from the inner surface of the second connector 800, thereby ensuring that an airtight seal is formed between the inner body 200 and the second connector 800. The rib extends in a direction generally parallel to the longitudinal axis of the inner body. In some embodiments, one or more of the ribs have angled, tapered, rounded, or other contoured ends 200C. Each rib has an angled or tapered end to act as an alignment guide that guides the inner body 200 within the passage of the second connector 200.

[0231] The angled or tapered surfaces 200A at the end of the inner body also help to position the inner body 200 within the second connector 800. These surfaces also prevent radial movement of the inner body 200 relative to the second connector 800. These angled or tapered surfaces 200A can also help to align the connector with the second connector 800. The ribs 215 and / or surfaces 200A help to ensure optimal sealing between the inner body 200 and the second connector 800. In other embodiments, the spacer may take the form of a single annular projection (not shown) positioned around the outer surface of the inner body 200.

[0232] In alternative embodiments, such as those shown in Figure 29C, one or more of the ribs 215 may be asymmetrical with respect to the other ribs; that is, not all ribs may have the same form and shape. The ribs 215 may include retractable features or reduced tapers or other angled radii or chamfered sections to help achieve suitable alignment.

[0233] The angled or tapered ends 200C of the vertical ribs prevent, or at least substantially prevent, the ribs from catching on the end portion of the second connector 800 when connected. In the embodiments shown in Figures 7 to 13, there are four ribs 215 that are equally spaced around the periphery of the body, thereby providing symmetry between the ribs 215 and other feature portions on the inner body 200. In alternative embodiments, there may be at least three ribs, for example, five, six, or seven ribs.

[0234] The sealing member is spaced a certain distance from the end portion 217. The sealing member 202 is located between the projection 215 and the end portion 217 of the inner body 200. The sealing member 202 is configured to seal against the passage wall of the second connector 800 so as to at least substantially block the gas flow through the space between the inner body 200 and the passage wall. The inner body 200 has a shoulder portion 219 between the sealing member and the end portion 217. In this connector embodiment, a plurality of assembly ribs 220 extending from the end portion 217 to the shoulder portion 219 are incorporated. These assembly ribs can be advantageously used in the assembly process relating to the mounting of the sealing member 202.

[0235] The inner body 200 has a wall that is tapered outward toward the end portion 217. The wall has an inner surface and an outer surface. The diameter of the inner wall at the end portion 217 is greater than the diameter of the rest of the inner wall. The diameter of the outer wall at the end portion 217 is greater than the diameter of the rest of the outer wall. The inner wall of the end portion forms a smoother / continuous contour with the inner wall of the end portion of the second connector 800, reducing flow resistance and dead space.

[0236] As will be described in more detail below, at each side of each bridge 205, there is an alignment feature 209 that helps to align the inner body 200 with the outer body. In the embodiments shown in Figures 7 to 13, the alignment feature 209 is a boss. In alternative embodiments, there may be more or fewer alignment features. For example, there may be one, two, three, five, six or more alignment features. The alignment features may be hemispherical in shape, or they may have other preferred shapes such as cubes, cuboids, pyramids, etc. These shapes may have a taper to enhance the alignment characteristics.

[0237] As shown in Figure 4, the end portion of the inner body 200 extends beyond the ends of other components of the connector 400 (such as the retaining mechanism, outer body 400, and cover 700). This allows the end portion 217 to engage with the second connector 800, precisely aligning the connector before the other components come into contact with the second connector 800. The connector 100 may also include an alignment or retraction feature at the end portion of the inner body. The alignment feature may be an inwardly tapered section of the outer wall so that the end portion of the inner body 200 fits more easily into the second connector 800 and then moves and aligns when the two components are fully connected.

[0238] The lower portion 200A of the inner body 200 has an inner surface diameter that approximately matches the inner surface diameter of the second connector 800. This provides a substantially smooth and / or continuous contour between the inner surface of the inner body 200 and the second connector 800, thereby reducing turbulence in the gas flow path between the two components. Furthermore, this reduces potential dead space, which is undesirable, especially when the gas flow contains a mist agent, as some of the mist agent may condense and / or accumulate in the dead space.

[0239] Therefore, the inner surface of the inner body 200 is tapered from the diameter at the lower end to a narrower diameter. The smaller inner diameter provides a less turbulent profile. However, this also creates space for various surface features on the outer surface of the inner body 200, which will be described herein.

[0240] The main body is configured to be at least partially located within the internal passage of another connector, the projection is configured to position a portion of the inner body 200 away from the passage wall of the second connector 800 and to define a space between the inner body 200 and the passage wall, and the sealing member is configured to seal against the passage wall of the second connector 800 so as to at least substantially block the gas flow through the space between the inner body and the passage wall.

[0241] In one embodiment, the inner body is provided as a separate component that is independent of the tube or lacks a tube connection feature. In one embodiment, the inner body does not include a tube connection feature.

[0242] Retention mechanism To hold connector 100 when assembled with second connector 800, connector 100 has a retaining mechanism. Referring to Figures 7 to 13 and Figure 22, the retaining mechanism has projections 207 that engage with one or more recesses of second connector 800. These projections 207 are located at or near the ends of a pair of levers 203 that connect to an inner member via a bridge 205. The projections 207 are located on the lower portion of the levers 203, and the upper portion of the levers 203 extends beyond the bridge 205 to form a pair of actuation tabs. By pushing the actuation tabs inward, the bridge bends and the projections 207 move outward.

[0243] The lever 203, bridge 205, and inner members can be molded from a material (such as acetal) having a higher yield strength and a higher Young's modulus and / or flexural modulus compared to the material of the outer body, and the lever 203 can move a suitable distance without plastic deformation, yielding, and / or fracture, while also providing appropriate holding force.

[0244] When no force is applied to the lever 203, the lever 203 relaxes to a first resting position with the two projections at a first distance. When the lever 203 is connected to the second connector 800 with projection 207 engaged with recess 807 of the second connector 800, the lever 203 is in a second position with the projections at a second distance. Preferably, the first distance is the same as or less than the second distance. This means that projection 207 engages with the recess and without requiring additional force to hold them in place. The elimination of the need to push projection 207 together during engagement with the connector reduces stress on the connector in use and lowers the material creep rate. Furthermore, it may be advantageous to design the lever 203 so that projection 207 engages with the recess in the relaxed position but does not contact the base of the recess. This allows the lever 203 to be in a relaxed position when engaged, further reducing the creep effect on the material.

[0245] When connector 100 engages with second connector 800, projection 207 on lever 203 engages with recess 803 at the base of second connector 800. In the illustrated embodiment, the engagement surfaces of recess 803 and projection 207 are substantially perpendicular to the direction of movement required to remove the conduit, and once projection 207 is engaged, connector 100 and conduit 300 cannot be separated from second connector 800 even by great force.

[0246] In the alternative embodiment shown in Figure 23, the projection may have a curved contour that is complementary to the contour of the second connector 800 or the recess 803. The edges of the curved contour may be rounded to prevent damage to any part of the recess 803 and / or unintended engagement when the connector is connected to or removed from the exit end.

[0247] As outlined above, the engaging forces of the recess 803 and projection may be substantially perpendicular to the direction of movement. As shown in Figure 22A, angle α illustrates an alternative embodiment. Angle α is measured relative to the angle between the vertical centerline of the inner body 200 and the projection 207. This angle can help prevent unintended separation of connector 100 from second connector 800 when a force is applied along or substantially parallel to the direction of movement (which is the direction indicated along the centerline of the inner body 200) without corresponding operation / compression of lever 203 by the user (such as pushing the actuation tab inward via lever 203 as described herein).

[0248] The angle α may be approximately 85° to approximately 115°, more preferably approximately 90° to approximately 110°, or preferably approximately 93° to approximately 102°, or preferably approximately 95° to approximately 99°.

[0249] To separate connector 100 from second connector 800, the actuation tab moves inward to a sufficient extent that projection 207 moves outward and disengages from recess 807. Once projection 207 is disengaged from recess 807, the connector can be removed with minimal resistance.

[0250] To connect the connector 100 to the second connector 800, the actuation tabs can be pushed inward to move the projections 207 outward, allowing them to extend beyond the outer edge of the end portion of the second connector 800. Preferably, the underside of the projections 207 may include a tapered alignment or retraction feature, and when the connector is pressed against the second connector 800, the contact between the underside of the projections 207 and the end portion of the second connector 800 pushes the projections 207 outward. This eliminates the need to press the actuation tabs when connecting the connector, allowing the conduit 300 to be attached to the device in a single movement.

[0251] Once the projection 207 extends beyond the end of the second connector 800, the connector can be further pushed down until the projection 207 engages with the recess. The projection 207, engaged with the recess 807, can generate an audible or tactile indicator to show the user that the connector is engaged.

[0252] Referring to Figure 10, the lever 203 has a slight inward curve from the bridge 205 to the projection. This slight curve biases the projection 207 at the base of the lever 203 in a direction that engages with the recess 807 of the second connector 800. Figure 11 shows that the lever 203 is tapered between the bridge 205 and the projection such that the width of the lever 203 at the projection end is smaller than the width of the lever 203 at the bridge 205 end. The thickness of the lever also changes along its length, for example, being thicker near the bridge than at the retaining end. This taper allows the end portion of the finger to bend more easily than the bent portion. The taper also allows the lower portion of the bridge to bend with a more uniform stress distribution.

[0253] The inner surface of the actuating tab may have one or more support ribs. These ribs increase the rigidity of the tab so as to prevent it from bending when pressed. If the tab bends, a large force may be applied to the actuating tab without resulting in corresponding movement in the projection. By making the tab rigid, any movement in the tab is transmitted through the fingers to the fingers and the lower part of the projection. The tab also has the further function of restricting its own movement by contacting the outer body 400 and / or the intermediate shell 600. That is, the walls of the outer body 400 act as a stopper. The amount of movement is limited to the amount of movement required to actuate the projection, thereby preventing excessive bending that could damage the components.

[0254] outer body Referring to Figures 14 to 20, the outer body 400 partially encloses the inner body 200. Figures 2 to 5 show the relative positions and orientations of the inner body 200 and the outer body 400. The outer body 400 and the inner body 200 can be formed from a single piece, but by manufacturing the two components separately and then assembling them together, different materials (for example, acetal for the inner body 200 and polypropylene for the outer body) can be used. This is beneficial because some materials with desirable mechanical properties for the inner member may not be suitable for the overmolding process, which will be discussed in more detail later.

[0255] The outer body 400 serves a variety of purposes, some of which are described in more detail below. These include the following: To provide a connection feature that allows the conduit 300 to be attached to the connector 100. - To provide a surface at the end of the connector 100 that contacts the upper surface of the device, for example, the apparatus 10, when the conduit 300 and the device are connected. To provide receptacles for electrical pins to facilitate electrical connection between the device and the conduit. • To form a more uniform outer surface on connector 100.

[0256] In a preferred embodiment, the inner body 200 is clipped into the outer body 400. As shown in the figure, the upper portion of the outer surface of the inner body 200 has an annular projection / flange, which preferably extends along the entire outer circumference of the inner body 200. The outer body 400 includes a corresponding recess. When assembling the connector, the inner body 200 and the outer body are pressed together so that the projection of the inner body 200 clips into the recess of the outer body 400. This provides both retention force and an airtight seal through a gapless crimp between the projection and the recess.

[0257] Figures 24A to 24B show a modified form of the sealing mechanism and the holding mechanism between the inner main body 200 and the outer main body 400. Figures 24A to 24B show the inner main body 200, the outer main body 400, an inner and outer main body sealing mechanism configured to seal both the inner main body 200 and the outer main body 400, and an inner and outer main body holding mechanism configured to hold both the inner main body 200 and the outer main body 400. The inner and outer main body sealing mechanism and the inner and outer main body holding mechanism are separate mechanisms.

[0258] The inner and outer main body holding mechanism holds both the inner main body 200 and the outer main body 400 in a substantially permanent configuration. The inner main body 200 and the outer main body 400 are not easily separated once assembled (e.g., a one-time engagement). The various inner and outer main body holding mechanisms described herein prevent or at least substantially prevent the inner main body 200 and the outer main body 400 from separating. When engaged, the inner main body 200 and the outer main body 400 cannot be easily separated; for example, their components cannot be separated manually.

[0259] In one embodiment, the inner and outer main body sealing mechanism is further configured to hold both the inner main body 200 and the outer main body 400. In other words, the sealing mechanism includes a second inner and outer main body holding mechanism.

[0260] Figure 24A shows an inner and outer main body sealing mechanism in the form of an interference fit between the tapered wall of the inner main body 200 and the complementary tapered wall of the outer main body 400. The inner main body 200 has a tapered outer surface with an outer diameter at the end portion that is narrower than the rest of the inner main body.

[0261] Figure 24A also shows an inner and outer main body holding mechanism in the form of a protrusion of the inner main body and a corresponding recess of the outer main body. The protrusion is a rounded protrusion. The interference fit between the tapered walls of the inner main body 200 and the outer main body 400 can further hold both the inner main body 200 and the outer main body 400 together.

[0262] Figure 24B shows two protrusions and complementary recesses. Both protrusions are rounded. One protrusion is larger than the other. Either protrusion can be configured as a sealing and / or retaining mechanism.

[0263] Figure 24C shows that the inner and outer body retaining mechanisms include projections in the form of hooks or sharp projections. The inner and outer body retaining mechanisms may include complementary recesses or apertures. The inner and outer body retaining mechanisms may include two or more hooks. The inner and outer body retaining mechanisms may include complementary recesses or apertures.

[0264] Figure 24D shows an alternative configuration. This embodiment shows an inner body 200 comprising an annular projection having a substantially rounded cross-sectional profile 221f and another annular projection having an angled cross-sectional profile 221g. The substantially rounded annular projection 221f can be configured as a retaining mechanism and can fit into a complementary recess 421f of the corresponding outer body 400. The angled annular projection 221g can be configured as a sealing mechanism and / or can be configured to be interlocking with the wall of the outer body 400, for example, at an interference point 421g.

[0265] In Figure 24D, the sealing mechanism between the inner body 200 and the outer body 400 includes a projection 221g. Optionally, the sealing mechanism is an annular sealing projection. The annular sealing projection 221g includes an angled cross-sectional contour. The annular sealing projection identified as 221g is provided on the outer surface of the inner body 200 and is configured to be in an interlocking state with the inner surface of the outer body 400, for example, at position 421g.

[0266] In the illustrated embodiment, the inner body 200 includes a projection, and the outer body 400 includes a recess or aperture. In an alternative embodiment, the inner body 200 may include a recess or aperture, and the outer body 400 may include a projection.

[0267] In some embodiments, complementary recesses or apertures are defined by one or more walls, and each of them is positioned within the complementary recesses or apertures without contacting one or more walls.

[0268] Each of the modified forms of the inner body and the outer body retaining mechanism projection is an annular projection. The complementary recess or aperture is an annular recess or aperture. In an alternative embodiment, the recess or aperture is an annular recess or aperture, and the projection may have a shorter length and may extend, for example, only around a portion of the outer surface of the inner body.

[0269] In some embodiments, the annular sealing projection and the annular retaining projection have different diameters. That is, the annular retaining projection extends further outward from the inner body 200 than the annular sealing projection.

[0270] Figures 24B and 24D show projections with different cross-sectional profiles. In some embodiments, the annular retaining projection has a rounded cross-sectional profile. In other embodiments, the annular retaining projection has an angled cross-sectional profile.

[0271] These are embodiments shown in Figures 24A to 24D, in which the inner body 200 includes a projection and the outer body 400 includes a recess. In alternative embodiments, the inner body 200 may include a recess and the outer body 400 may include a projection.

[0272] Referring to Figures 24A to 24D, the connector 100 has an inner body and outer body sealing mechanism configured to seal both the inner body 200 and the outer body 400. The connector 100 also has an inner body and outer body holding mechanism configured to hold both the inner body 200 and the outer body 400. The inner body and outer body sealing mechanism and the inner body and outer body holding mechanism are separate mechanisms.

[0273] The inner and outer body sealing mechanism includes sealing projections on the outer surface of the inner body 200 and complementary sealing recesses on the outer body. The inner and outer body retaining mechanism includes retaining projections on the outer surface of the inner body 200 and complementary retaining recesses on the outer body. The end portion 217 of the inner body 200 extends beyond the end of the outer body. The outer surface of the end portion 217 of the inner body 200 is tapered outward.

[0274] In some embodiments, the upper end of the outer surface of the inner body 200 may also include one or more overhangs / projections (ideally two) corresponding to the cutout of the outer body 400. The overhangs are positioned below the annular projection so that the overhangs and the cutout do not interfere with the airtight seal provided by the recess and projection (therefore, the cutout is positioned below the annular recess).

[0275] The boundary between the channel within the cutout and the inner wall of the body forms an acute angle. Similarly, the lower end of the latch provides a flat base / surface that is substantially perpendicular to the outer wall of the inner body 200. When the inner body 200 is assembled with the outer body 400, the latch does not prevent the two parts from being pressed against each other. The tapered portion of the latch guides the latch into the cutout and / or gradually pushes the wall of the outer body 400 outward as the inner body 200 is received by the outer body 400. Once the latch is positioned within the cutout, the interaction between the base of the latch and the boundary of the cutout prevents the inner body 200 and the body from coming apart. This allows for easy assembly of the components during manufacturing, but prevents disassembly during use. In other words, the connector is configured as a "one-time assembly" connector so that the inner body 200 and the outer body 400 cannot be easily disassembled or separated. Once assembled, the inner body 200 and the outer body 400 are effectively and permanently connected or fixed to each other.

[0276] Ideally, when assembled and relaxed, the retaining force does not contact the walls of the cutout, but rather floats within the cutout, for example. In this situation, the retaining force is provided by the interaction between the annular projection / flange and the recess.

[0277] If the engagement comes into contact with the wall of the cutout, even a small error in the manufacturing tolerance could prevent the annular projection and recess from forming a proper seal. In this configuration, if a sufficiently large force is applied to the connector 100 to disengage the annular projection / flange from the recess, the engagement will only come into contact with the base of the cutout. In this scenario, the engagement will abut against the base of the cutout.

[0278] The force required to further disassemble the components is far greater than the force required to remove the annular projection from the recess (in particular, the components may need to be destroyed to further disassemble them). In a situation where the projection is loose from the recess and the engagement is caught in the cut-off portion, the annular projection is shaped and configured such that it re-engages the recess onto itself, for example, through a force on the interaction surface between the annular projection and the recess.

[0279] In some embodiments, the connector may be configured to associate with a larger diameter tube. Therefore, the tube connection portion of the outer body must be configured to accommodate a larger diameter tube, which may result in the outer body expanding along at least one dimension, for example, the diameter of the outer body may increase. Therefore, the inner body must be configured to accommodate a wider (i.e., larger diameter) outer body. In some embodiments, the bridge 205 must be lengthened so that the lever 203 can be located outside the outer body. Lengthening the bridge 205 may result in changes to the stiffness / strength requirements of the bridge 205.

[0280] For example, the embodiment shown in Figure 28 shows a connector 200 as an alternative configuration to the configurations of the embodiments described with reference to Figures 7 to 13. In particular, relating to the embodiment in Figure 28, this configuration includes a rib 215, as described with reference to Figure 29. Figure 28 also includes an assembly rib 220 and a shoulder portion 219, which are also described with reference to Figure 29 in this case.

[0281] In the embodiment shown in FIG. 29, a strengthening feature in the form of a stepped portion 230 is provided so as to locally increase the stiffness by reducing the size of the bending region of the bridge. The strengthening feature can also change the hinge point of the lever 203. Thereby, the lever 203 including the longer bridge 205 can achieve substantially the same compressive force as the lever of the shorter bridge as described above. The strengthening feature in the bridge 205 can provide bending consistency of the lever among different embodiments of the connector 100. The stepped portion 230 is provided at the intersection between the operating portion 203A and the bridge 205.

[0282] In some embodiments, the stepped portion 230 is provided at the intersection between the holding portion 203B and the bridge 205. In some embodiments, the stepped portion 230 is provided on the bridge 205. In the illustrated embodiment, the strengthening feature in each lever 203 includes two stepped portions extending towards each other from both sides of the lever towards the central plane of the bridge.

[0283] In some embodiments, each lever 203 can include a single stepped portion 230 extending from either side of the lever. In some embodiments, the single stepped portion 230 can be provided at a substantially central position between the sides of the lever 2'03.

[0284] The strengthening feature can be provided on the bridge 205 of the connector regardless of the size of the connector or the tube to which the connector is connected, where the strengthening feature is used to adjust the position of the hinge point along the bridge and / or the compressive force required to bend the lever 203 in order to engage or disengage the connector 100 with the second connector 800.

[0285] In some embodiments, the reinforced feature may include a bridge 205 having one or more thickened sections, or the entire bridge 205 may be thickened. In some embodiments, the reinforced feature is provided at the intersection of the working section 203A and the bridge. In some embodiments, the reinforced feature is provided at the intersection of the retaining section and the bridge. In some embodiments, the reinforced feature is provided on the bridge.

[0286] In some embodiments, the bridge may be provided with weakening features (not shown) to change the position of the hinge point and / or reduce the compressive force required to bend the lever 203. The weakening features may take the form of separate thin-walled portions of the bridge 205 (e.g., stepped portions of the bridge 205), multiple separate thin-walled portions of the bridge 205 (e.g., the bridge 205 is embossed, for example, by dimples), or the entire bridge may be thinned.

[0287] In some embodiments, the weakened feature is provided at the intersection of the working portion 203A and the bridge. In some embodiments, the weakened feature is provided at the intersection of the holding portion and the bridge. In some embodiments, the weakened feature is provided on the bridge.

[0288] The reinforcing and weakening features can be used to adjust the force required to bend the lever 203 and / or move the retaining portion 203B toward or away from the center of the connector 100. In some embodiments, the bridge includes one or more reinforcing features. In some embodiments, the bridge includes one or more weakening features. In some embodiments, the bridge includes one or more reinforcing features and one or more weakening features.

[0289] In the embodiment of Figure 29 in which the connector includes a reinforced feature, a link portion 231 is provided that connects the operating portion 203A and the retaining portion 203B of the lever 203 to ensure that the movement of the operating portion 203A toward the center of the connector 100 causes the retaining portion 203B to move away from the center of the connector 100.

[0290] If the link portion 203 is absent, the stepped portion 203 substantially traverses the lever 203 and extends between the sides of the lever 203, providing an additional hinge point around which the actuating portion 203A can pivot. In such embodiments, the actuating portion 203A may require a greater actuating force and / or distance of movement before moving the retaining portion 203B away from the center of the connector 100. In some embodiments, the connector includes one or more link portions 231 and one or more stepped portions 230. In some embodiments, the connector includes multiple link portions 231 and multiple stepped portions 230.

[0291] Figures 29D and 29E show various embodiments of alternative reinforcing features 230' instead of the stepped section 230 outlined above. The reinforcing sections 230 and 230' facilitate the movement of forces applied to the working section 203A (e.g., axially inward), helping to release the retaining mechanical projection 207 at the end of the retaining section 203B from its position in the recess 803. Such reinforcement can further help resist twisting or other bending of the lever in the bridge region 205 (for example, when a force is applied to the lever 203 when the user is connecting or disconnecting the connector 100 and the second connector 800).

[0292] In Figures 29D to 29G, the reinforced feature section 230' is provided as the intersection between the operating section 203A and the bridge 205.

[0293] In Figures 29D to 29E, the thickened reinforcement feature 230' includes a stepped portion and extends from one side of the lever 203 to the other side of the (same) lever 203, i.e., the reinforcement feature 230' extends from one edge or side of the bridge width to the other edge or side, or substantially across the bridge interconnection with the lever 203. In an alternative embodiment, the reinforcement feature 230' may extend to at least a portion between the edges or sides of the lever 203.

[0294] In Figures 29F to 29G, the reinforced feature 230' includes an inclined portion and extends to at least a portion of the edge or between the sides of the lever 203. The reinforced feature 230' (which may be the thickened intersection portion between the bridge and the lever) is positioned substantially in the center between the sides of the lever 203.

[0295] As shown in these figures, the bridge 205 is positioned between the working portion 203A and the retaining portion 203B. As described above, the bridge 205 may include a reinforcement feature 230 or 230'. The reinforcement feature may include a stepped portion (or other joint) at the intersection between the working portion 203A and the bridge 205.

[0296] The reinforced features 230, 230' may include two (or more) stepped sections extending toward each other from the sides or edges of the lever toward the central plane of the bridge 205.

[0297] The reinforced feature sections 230, 230' may include thickened portions of the bridge 205. The thickened portions can be provided at the intersection of the operating portion 203A and the bridge 205.

[0298] The working portion 203A may include ribs (or other reinforcing or strengthening portions) that substantially limit the bending or deflection of the working portion 203A when a force is applied.

[0299] Tube connection Referring to Figures 14 to 19 and Figure 21, the connector 100 has a tube connection portion 403 that engages with the conduit 300. In the illustrated embodiment, the tube connection portion 403 is part of the outer body 400. In other embodiments, the tube connection portion 403 is part of the inner body 200. The tube connection portion 403 defines the gas path. The gas path is in fluid communication with the gas path of the inner body.

[0300] Referring to Figures 14-19 and 21, the outer body is provided with a tube connection feature, while the inner body does not. When the assembly of the inner and outer bodies is manufactured, the outer body includes a tube connection feature so that the assembly is connected to the tube only through the tube connection feature of the outer body.

[0301] The tube connection portion 403 is a tubular member. The tube connection portion 403 has at least a pair of projections 407 that enter into the path. The path has a generally helical contour so that a conduit 300 having a female threaded surface can be screwed onto the tube connection portion 403.

[0302] In some embodiments, the projections 407 can be axially positioned on one side of the tube connection portion 403. That is, there may be two or more projections 407 on one side of the tube connection portion 403. The axially positioned projections 407 also enter the helical path.

[0303] In an alternative embodiment, the tube connection portion 403 may include a male thread. The thread may be a complete thread extending around the tubular member. Alternatively, the thread may be an incomplete thread having short portions of thread with gaps or spaces between these short portions.

[0304] The conduit 300 can be wound in a spiral, and the paths of the projections 407 on the tube connection portion 403 are positioned to generally coincide with the tapered / helical arrangement of the spiral-wound conduit. In some embodiments, the paths of the projections do not strictly coincide with the helical arrangement of the spiral-wound conduit, but the projection locations are designed to engage with the threads of the tube 300. The projections are positioned to be located at the edges / boundaries of the female thread portions of the tube 300. By using a series of projections 407 instead of typical helical threads, the assembly becomes more tolerant of differences in tube diameter.

[0305] Preferably, the projections 407 are positioned to coincide with one rotation of the taper, and only the first and last projection is axially aligned. By axially aligning the first and last projection 407, axial movement of the tube is also prevented or at least substantially blocked, as will be described later.

[0306] The conduit 300 may be a composite structure made of two or more distinct components that are spirally wound to form a long tube. A preferred conduit is the tube described in International Publication No. 2012 / 164407, which is incorporated herein by reference in its entirety. The projection 407 is positioned in a line with the tube and engages with the member by compressing the hollow lumen.

[0307] A second spiral winding member can be intertwined with the first member, and the second member is made of solid plastic. The second member is substantially incompressible and therefore cannot pass over the projection, so the winding of the second member on either side of the first member prevents axial movement of the conduit 300 when the projection engages with the first member. Since the first member is slightly wider than the projection itself, slight axial movement may still be possible, thereby allowing the projection 207 to move between the boundaries provided by the two adjacent windings of the second member.

[0308] This axial movement can be prevented / restricted by the two axially aligned projections 407 described above. The arrangement of the projections 407 can be changed so that one projection 407 engages with the lower boundary of the first spiral member and the other projection 407 engages with the upper boundary of the first spiral member. (Figure 21 shows one embodiment in which two axially opposing projections provide a similar function.)

[0309] In some embodiments, the location of the projection 407 can be selected or designed so that the projection clamps onto an adjacent / proximity helical portion of the tube. During manufacturing, the wire of the conduit is exposed before the conduit 300 and the outer body 400 are connected. The outer body 400 may have a positioning or retraction feature for positioning the exposed wire of the breathing conduit. The positioning or retraction feature includes a tapered channel that tapers from a wide inlet to a narrow outlet. This ensures that the wire is guided toward the desired location and that the electrical contacts at the end of the wire can be soldered to electrical pins, as described later.

[0310] Referring to Figures 30 and 31, the projection 420 can be provided as alignment or retraction to the reinforcing features of the conduit 300 as disclosed herein. The projection 420 can be provided as a projection extending radially outward and can provide a guide to the conduit tube 300 as described herein.

[0311] In the embodiment, the protrusion 420 may take the form of a rib or fin-shaped portion 420. The protrusion 420 can advantageously assist in the assembly of the connector and conduit and can prevent separation during the overmolding process as described herein.

[0312] The projection 420 may include a raised projection configured to separate the reinforcing feature of the conduit and guide the reinforcing feature (along with any other portion of the conduit that is removed when the reinforcing feature is separated) toward the wire separation projection 430.

[0313] The wire separation projection 430 can be configured to separate, maintain, or guide two or more wires in the reinforcing feature of the conduit in order to attach them to an electrical pin as described later.

[0314] The tube connection can be positioned at an angle such that the flow path in the first section of the conduit 300 is at an angle to the flow path passing through the last section of the second connector 800. This offsets the first section of the conduit 300 from a direction perpendicular to the surface of the device. This angle allows the conduit 300 to be oriented toward the front of the device, and the conduit 300 is more likely to curve toward the front of the device, as opposed to the back of the device, which may obscure the screen 124 of the device.

[0315] A larger angle between the second connector 800 and the tube connection is more likely to encourage the conduit to extend away from screen 124, while a smaller angle results in a smaller impedance to the gas flow through the conduit 300. The angle can be between 0° (i.e., parallel to the second connector 800) and 90° (i.e., perpendicular to the second connector 800), or between approximately 5° and 45°, or between approximately 10° and 30°, or between approximately 15° and 20°, or between any two of the angles described above.

[0316] Referring to Figure 14, the tube connection extends from the longitudinal axis of the main body at an angle greater than approximately 0° and less than approximately 90°. This angle is greater than approximately 5° and less than approximately 60°, greater than approximately 10° and less than approximately 40°, or greater than approximately 15° and less than approximately 20°. The tube connection extends from one longitudinal axis of the electrical subassembly 500 at an angle greater than approximately 0° and less than approximately 90°.

[0317] The outer body 400 has an outer wall that encloses a substantial portion of the inner body 200. When the connector 100 is connected to the device's second connector 800, the outer wall further encloses the second connector 800. The outer wall may have cut-out sections that allow the bridge of the inner body 200 to pass through when the inner body 200 and the body are assembled together.

[0318] The width of the cutout preferably matches the distance between the tips of the alignment projections 209 located on each bridge 205 of the inner body 200. When assembled, the projections contact the cutout on each side to ensure precise angular alignment between the inner body 200 and the outer body 400.

[0319] Electric pin The connector 100 has an electrical subassembly 500. The electrical subassembly 500 has a body 501 and electrical pins (contacts) 503 extending outward from the body 501. The electrical subassembly body 501 is formed of a non-conductive material. The electrical subassembly 500 is received by a receptacle of the outer body 400. When the electrical subassembly 500 is assembled with the outer body 400, the upper ends of the electrical pins are soldered onto the exposed electrical contacts of the conduit.

[0320] The lower end of the electrical pin 503 passes through the receptacle and enters the exposed recess at the base of the outer body. This section forms the electrical connector portion of connector 100. When assembled with the device exit, the protruding electrical connector on the device is inserted into the recessed electrical connector of the connector, and the electrical pin 503 is inserted into the hole of the protruding electrical connector.

[0321] The outer body 400 may also include an alignment or retraction feature that helps align the electrical connection between the device and the connector 100. The alignment or retraction feature may take the form of a tapered end of the receptacle so that when the user presses the two components together, the connector 100 aligns with the second connector 800 at a precise angle.

[0322] The body 501 may have a separation portion designed to abut against the upper surface of the outer body 400 around the receptacle. This serves to position the electrical subassembly 500 at the correct height before soldering. The base of the body may further have one or more projections corresponding to the inner recess of the receptacle. When assembling the electrical subassembly 500 with the outer body 400, the projections clip into the recess to hold the electrical subassembly 500 in place for the soldering process and further for the overmolding process.

[0323] The electrical subassembly 500 may have a retaining feature in the form of a tab that extends horizontally from the upper portion of the overmolded section. The retaining feature is inserted into a complementary recess of the outer body 400 before further overmolding to provide a more secure fit between the outer body 400 and the electrical subassembly 500.

[0324] Intermediate shell Once the electrical insert 500 is assembled with the outer body 400 and soldered to the electrical contacts of the conduit, the intermediate shell 600 is attached to the outer body 400. The intermediate shell 600 is located between the outer body 400 and the cover 700 when the connector 100 is fully assembled.

[0325] The intermediate shell 600 covers the electrical subassembly 500, the end portion of the conduit 300, and the soldered electrical contacts. It serves to protect the electrical connections and to hold the assembled electrical subassembly 500 and conduit 300 together with the outer body 400. The intermediate shell 600 also acts as another protective layer, hermetically sealing the electrical connections from gases such as oxygen-rich gases leaking from this device or other devices.

[0326] The outer body 400 and the electrical subassembly 500 can be assembled with the intermediate shell 600 before assembling the outer body 400 with the inner body 200. The material used for the intermediate shell 600 is the same as or compatible with the material used for the outer body 400, so that the intermediate shell 600 and the outer body 400 can be joined together. Therefore, the materials used for the intermediate shell 600 and the outer body 400 are the same as or compatible with the material used for the conduit 300 to facilitate the joining of the conduit 300, the intermediate shell 600, and the outer body 400.

[0327] The materials for the outer body 400 and the intermediate shell 600 can be simultaneously molded or overmolded without the molding process of one component affecting the molding process of the other. For example, both materials have melting temperatures that do not affect the other component. In particular, by molding the intermediate shell 600 on top of the outer body 400, the outer body 400 does not melt or deform. Furthermore, the intermediate shell 600 and the outer body 400 are joined to each other.

[0328] As described above, having separate inner body 200 and body in this scenario is beneficial because one material can be used for the inner body 200 to meet the required mechanical properties, while the second material can be used for the outer body 400 to enable overmolding.

[0329] The outer body 400 may have raised features around the edges of the section to be overmolded with the intermediate shell 600. This makes it easier for manufacturing tools to provide a proper seal during the overmolding process, thereby reducing the possibility of defects in the overmolded area, such as burrs.

[0330] When connecting connector 100 to the second connector 800, preferably, an airtight seal, i.e., a wiper seal of the inner body 200 that seals against the device exit, is generated before the electrical connection between the electrical pins 503 of connector 100 and the electrical connector of the device.

[0331] In the illustrated embodiment, the intermediate shell 600 is either overmolded onto the outer body 400 or molded simultaneously with the outer body 400.

[0332] Elastomer outer cover As described above, the inner body 200 and the outer body 400 define a gas pathway through which gas flows, for example, from a respiratory device to the patient interface. The attached drawings show details of the retaining mechanism of the inner body 200, including the operating feature section. In one alternative embodiment, the outer body 400 may have a retaining mechanism including the operating feature section.

[0333] In another alternative embodiment, the connector may have a single body (without separate inner and outer bodies). This single body may have a retaining mechanism with an operating feature.

[0334] The operating feature is manually operable. According to the embodiments described herein, the operating feature is the operating part of a lever. In alternative embodiments, the operating feature may be a button, switch, or part of a body that moves in response to manual operation.

[0335] A cover 700 can be provided that encloses the connector 100 in a manner that surrounds various components. The cover 700 is formed as a sleeve 701 having a first opening 701 and a second opening 703. The first opening is smaller than the second opening. The shape of the sleeve generally corresponds to the shape of the other components of the connector, including the outer body 400 and the intermediate shell 600. The cover 700 is formed from an elastomer material. The cover 700 is flexible and elastic. The cover 700 also has a higher coefficient of friction compared to the coefficient of friction of the outer body.

[0336] The cover 700 extends over the operating feature. The flexible cover 700 extends over the operating feature, but also allows the operating feature to be operated manually by the user. The cover 700 can also bend the fingers with minimal force and does not affect the operation of the operating feature.

[0337] The cover 700 can be slid over the conduit 300 before assembly, in order to allow it to slide over the connector 100 after the various components have been assembled. The cover 700 is fitted to the outer body 400 by friction or by interlocking fit. The cover 700 includes a semi-annular recess 705 near the inner base of the cover 700, which is complementary to the semi-annular projection at the outer base of the outer body 400.

[0338] In alternative embodiments, the recess may have a different shape. For example, the recess may be perfectly annular. The interaction between the recess 705 and the projection serves to hold the cover 700 on the outer body 400. Alternatively, the cover 700 and the outer body 400 may be fitted together by friction and / or by interference fit.

[0339] The cover 700 provides a uniform outer surface. The cover 700 also protects various components of the connector 100. The outer body 400 and the intermediate shell 600 may be shaped to be complementary to the inner surface of the cover 700. This supports the cover 700 so that the assembled connector 100 has a solid feel to the cover 700, as opposed to having a hollow section. The intermediate shell 600 and / or the outer body 400 may achieve this shape through a series of ribs so that the intermediate shell 600 and / or the outer body 400 can achieve the desired shape without using an excessive amount of material.

[0340] When the lever 203 is actuated, the cover 700 acts as an intermediate surface that applies pressure to the upper portion of the lever 203. This provides a softer and more rounded surface for user interaction. The cover 700 may have an indicator of where the user needs to apply pressure to actuate the lever 203.

[0341] The indicator may take the form of a surface feature that is identifiable by touch and / or sight. The indicator may have a thick cross section, which provides a more comfortable feel for the user operating the tab. In the illustrated embodiment, the cover 700 has a thick section 707 corresponding to the operating part 203A. The thick section 707 has an outer feature 709. The cover 700 has a thin section 711 connecting the thick section to the rest of the cover 700. The thin section 711 allows the adjacent portion of the cover 700 to move when operated. In particular, the thin section 711 allows the thick section to move inward or toward the center of the connector 100 when operated. The cover 700 may have a thinner section of material adjacent to the indicator, thereby allowing the section of material to bend more easily when the tab is operated.

[0342] Since the cover 700 is made from an elastomer material, the material of the cover 700 allows it to move from its stationary shape to its operating shape and then return to its stationary shape.

[0343] The cover 700 may have a base 713 with a thickened shoulder 715. The shoulder 715 provides a surface that the user presses against when attaching the connector to the second connector 800. The thickened portion, combined with being formed from an elastomer material, can further provide an inward force with respect to the outer periphery of the connector 100, particularly around the retaining portion 203B of the lever 203. In other words, the cover 700 can be pre-molded to provide an inward bias direction. Alternatively, the cover 700 can be formed to be slightly smaller than the connector 100, and once the cover 700 is placed in field, the cover can achieve "stretching" to hold the cover in place on the connector 1000. The above can increase the force that holds the projection in the complementary recess of the second connector 800.

[0344] Figures 31A and 31B show the alignment features of the rib 440. These can correspond to the recesses in the thickened sections outlined above.

[0345] The cover 700 has a plurality of features that are complementary to the features of the outer body 400. In particular, the cover 700 and the outer body 400 have complementary features (for example, ribs 440 and their corresponding recesses in the thickened portion of the cover 700) that key-connect their components to each other and prevent rotation or pivoting of the cover 700 relative to the outer body 400. Specifically, the outer body 400 has ribs 440 and the cover 700 has complementary recesses.

[0346] Some of the ribs 440 extend in a direction transverse to the possible direction of rotation. In particular, some of the ribs, as shown by the ribs 440 in Figures 31A and 31B, extend vertically (or substantially parallel to the central axis of the connector 100) to prevent or at least substantially prevent rotation in the vertical direction. Other ribs are semicircular ribs 440A that nest within complementary recesses in the cover. In this case as well, these ribs can prevent or at least substantially prevent rotation of the cover 700 relative to the outer body 400 and help retain the cover on the outer body.

[0347] In some embodiments, the feature that key-connects the cover and the outer body 400 to each other and prevents rotation or pivoting of the cover 700 relative to the outer body 400 includes a non-circular shape of the outer body 400 and the cover 700. The outer body 400 and / or the intermediate shell 600 have one or more ribs that support the cover 700. The outer body 400 has an electrical subassembly for electrical connections. The body has an overmolded portion that hermetically seals around the electrical connections.

[0348] As described above, the material of the outer body 400 is the same as or compatible with the material of the conduit 300. That is, the materials of the outer body and the conduit can be simultaneously molded or overmolded without the molding process of one component affecting the molding process of the other component. For example, both materials have melting temperatures that do not affect the other component. In particular, by molding the outer body on top of the conduit, the conduit does not melt or deform. Furthermore, the outer body and the conduit are joined to each other.

[0349] In some embodiments, the connector 100 can be provided in combination with a conduit 300. For example, the outer body 400 can be overmolded on the conduit 300. The intermediate shell 600 can also be overmolded on the conduit 300, the outer body 400, or both the conduit 300 and the outer body 400. In the illustrated embodiment, the intermediate shell 600 is also overmolded on the electrical subassembly 500.

[0350] In some embodiments, the inner body 200, the outer body 400, and the cover 700 can be made from the same material. In other embodiments, the inner body 200, the outer body 400, and the cover 700 can be made from different materials.

[0351] Unless otherwise clearly required by the context, throughout this specification and the claims, words such as “includes,” “contains,” and “contains” should be interpreted in a comprehensive sense, as opposed to an exclusive or exhaustive sense, i.e., “includes, but not limited to.”

[0352] References to ranges of numbers disclosed herein (e.g., 1 to 10) are intended to also include references to all rational numbers within that range (e.g., 1, 1.1, 2, 3, 3.9, 4, 5, 6, 6.5, 7, 8, 9, and 10) and any range of rational numbers within that range (e.g., 2 to 8, 1.5 to 5.5, and 3.1 to 4.7), and so all subranges of all ranges expressly disclosed herein are expressly disclosed by this means. These are merely examples of what is specifically intended, and all possible combinations of numbers between the lowest and highest values ​​listed should be considered to be expressly referred to herein in the same way.

[0353] As used herein, the term "(plural)" following a noun means the plural and / or singular form of that noun.

[0354] As used herein, the terms "and / or" mean "and" or "or" or both, where the context allows.

[0355] Where the term “configured to be” is used herein, it may be replaced with “arranged to be” or “adapted to be.”

[0356] Where the foregoing statements refer to complete bodies or components having known equivalents, those complete bodies are incorporated herein as if they were individually shown.

[0357] This disclosure can be broadly said to include, individually or collectively, any or all combinations of two or more such parts, elements, and features that are referred to or shown herein in this application.

[0358] No reference to prior art in this specification constitutes, and should not be construed as, an endorsement or suggestion in any way, that such prior art forms part of common general knowledge in any country of the world in any field of focus.

[0359] Some features, aspects, and advantages of some configurations of this disclosure have been described in relation to the use of gas humidification systems in respiratory therapy systems. However, some features, aspects, and advantages of the use of gas humidification systems as described may be advantageously used in other therapeutic or non-therapeutic systems or even non-humidification systems that require gas humidification. Some features, aspects, and advantages of the methods and apparatus of this disclosure may equally apply to connectors and uses in other systems that require alternative connectors.

[0360] While this disclosure describes several embodiments, other embodiments that will be apparent to those skilled in the art are within the scope of this disclosure. Therefore, various variations and modifications can be made without departing from the spirit and scope of this disclosure. For example, various components can be rearranged as needed. Features from any of the above-described configurations can be combined with each other, and / or humidifiers or other components or devices forming part of a respiratory support system or respiratory therapy system or a system for delivering gas to a patient may include one or more of the above-described configurations. Furthermore, not all of the features, embodiments and advantages described herein are necessarily required to implement this disclosure. Therefore, the scope of this disclosure is intended to be defined solely by the following claims.

Claims

1. A connector for components of a medical respiratory circuit, The inner body and outer body are separate components. Includes, The inner body has a retaining mechanism configured to engage with a second connector, the retaining mechanism of the inner body includes a bend region, the bend region is provided by a bridge, The holding mechanism includes a lever that is movable relative to the inner body around the bending region, and the lever has a holding portion in one part of the bending region and an operating portion in another part of the bending region. The bridge is positioned between the operating part and the holding part. The inner body further includes a sealing mechanism configured to provide a seal between the inner body and the second connector, the sealing mechanism being a wiper seal. An outer body configured to at least partially enclose the inner body, the outer body having a tube engagement mechanism, The connector further includes at least one electrical contact, wherein the material of the outer body hermetically seals around the electrical contact.

2. The connector according to claim 1, wherein at least a portion of the inner body comprises a first material, and at least a portion of the outer body comprises a second material.

3. The connector according to claim 2, wherein the first material is harder than the second material.

4. The connector according to claim 3, wherein the bending region includes the first material.

5. The connector according to any one of claims 2 to 4, wherein the retaining portion of the lever includes the first material.

6. The connector according to any one of claims 2 to 5, wherein the operating portion of the lever includes the first material.

7. The connector according to any one of claims 2 to 6, wherein the entire retaining mechanism includes the first material.

8. The connector according to any one of claims 1 to 7, wherein the retaining mechanism includes two levers.

9. The connector according to claim 8, wherein the distance between the holding portions of the two levers in the disengaged state is the same as or less than the distance in the engaged state.

10. The connector according to claim 8, wherein the distance between the holding portions of the two levers in the engaged state is the same as the distance in the disengaged state.

11. The connector according to any one of claims 1 to 10, wherein the outer body has a cutout that allows a part of the inner body to be located inside the outer body and a part of the inner body to be located outside the outer body.

12. The connector according to claim 11, wherein the part of the inner body located outside the outer body is the retaining mechanism.

13. The connector according to any one of claims 1 to 12, wherein the bridge has a feature portion that aligns the bridge with the outer body.

14. The connector according to claim 13, wherein the aforementioned feature is an alignment boss.

15. The connector according to any one of claims 1 to 14, wherein the bridge includes an enhanced feature portion.

16. The connector according to claim 15, wherein the reinforced feature portion includes a stepped portion at the intersection between the operating portion and the bridge.

17. The connector according to claim 15 or 16, wherein the reinforced feature portion includes two stepped portions extending toward each other from both sides of the lever toward the central plane of the bridge.

18. The connector according to any one of claims 15 to 17, wherein the reinforced feature portion includes the thickened portion of the bridge.

19. The connector according to claim 18, wherein the thickened portion is provided at the intersection of the operating portion and the bridge.

20. The connector according to any one of claims 1 to 19, wherein the operating portion includes a rib that restricts the bending of the operating portion.

21. The connector according to any one of claims 2 to 7, wherein the entire inner body comprises the first material.

22. The connector according to any one of claims 2 to 7, wherein the first material has a higher Young's modulus than the second material.

23. The connector according to any one of claims 2 to 7, wherein the second material comprises a polyolefin.

24. The connector according to any one of claims 2 to 7, wherein the second material comprises polypropylene.

25. The connector according to any one of claims 2 to 7, wherein the first material comprises polyoxymethylene.

26. The connector according to any one of claims 1 to 25, wherein the lumen of the inner body and the lumen of the outer body are aligned.

27. The connector according to any one of claims 1 to 26, wherein the lumen of the inner body and the lumen of the outer body are coaxial.

28. The connector according to any one of claims 1 to 27, further comprising an inner body and outer body sealing mechanism configured to seal both the inner body and the outer body, and an inner body and outer body holding mechanism configured to hold both the inner body and the outer body, wherein the inner body and outer body sealing mechanism and the inner body and outer body holding mechanism are separate mechanisms.

29. The connector according to claim 28, wherein the inner body and outer body sealing mechanism is further configured to hold the inner body and the outer body together.

30. The connector according to claim 28 or 29, wherein the inner body and outer body sealing mechanism includes a projection.

31. The connector according to claim 30, wherein the inner body and outer body sealing mechanism are annular sealing projections.

32. The connector according to claim 31, wherein the annular sealing projection is provided on the outer surface of the inner body and is configured to be in a tight-fit state with the inner surface of the outer body.

33. The connector according to any one of claims 28 to 32, wherein the inner body and outer body holding mechanism include a projection.

34. The connector according to claim 33, wherein the projection is a latch.

35. The connector according to claim 33, wherein the inner body and outer body retaining mechanism projections are annular retaining projections.

36. The connector according to claim 35, wherein the annular retaining projection has a rounded cross-sectional contour.

37. The connector according to any one of claims 32 to 36, wherein the inner body and outer body retaining mechanism projections include complementary recesses or apertures, and the complementary recesses or apertures are annular recesses, apertures, or concave shapes.

38. The connector according to any one of claims 35 to 37, as dependent on claim 31 or 32, wherein the annular sealing projection and the annular retaining projection have different diameters.

39. The connector according to any one of claims 35 to 37, as dependent on claim 31 or 32, wherein the annular sealing projection and the annular retaining projection have different cross-sectional contours.

40. The connector according to any one of claims 28 to 39, wherein the end portion of the inner body extends beyond the end portion of the outer body.

41. The connector according to claim 40, wherein the end portion has a larger diameter than the rest of the inner body.

42. The connector according to claim 40 or 41, wherein the inner body includes a wall that is tapered outward toward the end portion.

43. The connector according to claim 42, wherein the diameter of the inner wall of the inner body at the end portion is greater than the diameter of the remaining portion of the inner wall.

44. The connector according to claim 43, wherein the inner wall of the end portion forms a smooth and / or continuous contour with the inner wall of the inner body.

45. A combination of a connector according to any one of claims 1 to 44, a second connector and a tube, wherein the second connector has an internal passage, and when the connector is connected to the second connector and the tube, the inner body is at least partially located within the internal passage of the second connector, and the retaining mechanism engages with the second connector, and the tube engaging mechanism engages with the tube.

46. The combination according to claim 45, wherein the second connector has one or more recesses, and the retaining mechanism engages with the one or more recesses.

47. A combination of a connector according to any one of claims 1 to 44 and a second connector, wherein the second connector has an internal passage, and when the connector is connected to the second connector and the tube, the inner body is at least partially located within the internal passage of the second connector such that the sealing mechanism substantially seals the internal passage and the retaining mechanism engages with the outside of the second connector.

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