Heating breathing pipeline connector assembly

Abstract

The utility model relates to a heating breathing pipeline joint assembly which comprises a main machine shell and a heating breathing pipeline air inlet joint, an elbow and a shell limiting rib with a clamping groove are arranged on the main machine shell, the shell limiting rib is arranged on one side of the elbow, and a rotatable automatic reset key is arranged on the heating breathing pipeline air inlet joint. A clamping hook matched with the clamping groove is arranged at one end of the automatic reset key, and the other end of the automatic reset key is elastically supported through a spring. According to the utility model, a user can more conveniently complete the installation process of the heating breathing pipeline and the main machine, and the user can complete the insertion and extraction of the heating breathing pipeline and the main machine with one hand.

Description

Technical Field

[0001] The utility model relates to the field of respiratory humidification equipment, in particular to a heating respiratory pipeline joint component. Background Art

[0002] Respiratory humidification equipment in the prior art, such as high-flow respiratory humidifiers, humidifiers, home ventilators, etc., usually include a main unit and a heated breathing circuit for transporting the respiratory gas generated by the main unit to the patient end while maintaining a certain temperature and humidity. In the prior art, the heated breathing circuit, as a consumable, needs to be designed to be lockably and releasably connected to the main unit, and to achieve electrical connectivity between the heated breathing circuit and the main unit while being connected. However, in actual use, the user needs to align the heated breathing circuit with the circuit interface of the main unit before performing the next locking action, and the above process requires the user to use both hands to complete, which increases the complexity of the device operation and makes the device less convenient to use.

[0003] In addition, in the prior art, a heating wire is usually combined with a breathing tube to heat the gas supplied to the patient. For example, the patent with the authorization announcement number CN101018582B discloses a device for measuring the characteristics of the gas supplied to the patient. However, the heating wire, temperature sensor and other components in the device are directly arranged inside the pipeline, which will affect the gas flow. In addition, the heating wire, temperature sensor and other components are placed in the pipeline with a certain humidity and temperature for a long time, which is also prone to leakage and short circuit problems. Utility Model Content

[0004] The purpose of the utility model is to provide a heated breathing circuit connector assembly, which can allow users to complete the installation process of the heated breathing circuit and the host more conveniently, and the user can complete the plugging and unplugging of the heated breathing circuit and the host with one hand.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A heated breathing circuit connector assembly comprises a main body shell and a heated breathing circuit air inlet connector, wherein the main body shell is provided with an elbow and a shell limiting rib with a slot, and the shell limiting rib is arranged on one side of the elbow, and the heated breathing circuit air inlet connector is provided with a rotatable automatic reset button, and one end of the automatic reset button is provided with a hook that cooperates with the slot, and the other end is elastically supported by a spring.

[0007] The heated breathing circuit air inlet connector includes a connector shell and a connector inner tube, wherein the front end of the connector inner tube is sealed and inserted in the elbow, and the rear end is connected to the heated breathing circuit, and an automatic reset button is arranged between the connector shell and the connector inner tube, and the automatic reset button includes a hinged portion, and a hook is provided at the head end of the hinged portion, and a button portion is provided at the tail end, a hinge block is provided in the middle part of the connector inner tube, and the middle part of the hinged portion is hinged to the hinge block, a spring seat is provided at the rear end of the connector inner tube, and the lower end of the spring is arranged in a groove on the spring seat, and the button portion is elastically supported by the upper end of the spring.

[0008] The joint shell is provided with an opening for exposing the button part, and the rear end of the button part is provided with a button limiting clamping plate.

[0009] An elbow accommodating cavity is provided in the main body shell, and the elbow is arranged in the elbow accommodating cavity. The shell limiting rib is provided on the main body shell at one side of the opening of the elbow accommodating cavity.

[0010] The housing limiting rib comprises a limiting rib protrusion, and the limiting rib protrusion is arranged on the outer side of the clamping groove and is clamped with the inner side of the clamping hook.

[0011] A protrusion inclined surface is arranged on the upper side of the front end of the protrusion of the limiting rib, and a hook inclined surface is arranged on the lower side of the front end of the hook.

[0012] The rear end of the heated breathing circuit air inlet connector is connected to the heated breathing circuit, the outer side of the tube wall of the heated breathing circuit is provided with spiral ribs, and the inside of the ribs is provided with a heating guide wire and a temperature measuring guide wire, wherein the heating guide wire is arranged close to the tube wall, and the temperature measuring guide wire is arranged in the middle of the ribs.

[0013] The rear end of the heated breathing circuit air inlet connector is connected to the heated breathing circuit, and the heated breathing circuit includes an inner tube wall and an outer outer sleeve, wherein ribs and temperature measuring guide wires are spirally wound in parallel on the outer side of the tube wall, a heating guide wire is arranged inside the ribs, and the heating guide wire is arranged close to the tube wall.

[0014] The two ends of the temperature measuring wire are respectively connected to the corresponding temperature measuring terminals, and the two ends of the heating wire are respectively connected to the corresponding heating terminals.

[0015] One end of the temperature measuring wire is connected to the temperature measuring terminal, and the other end is connected to the grounding terminal. One end of the heating wire is connected to the heating terminal, and the other end is connected to the grounding terminal.

[0016] The advantages and positive effects of the utility model are:

[0017] 1. The utility model facilitates the connection and disassembly of the heated breathing circuit and the host, and can be quickly positioned when connected. The user does not need to press a button, but only needs to push the heated breathing circuit air inlet connector to achieve a locked connection; when disassembling, the user only needs to press the automatic reset button on the heated breathing circuit connector to pull it out. The entire plugging and unplugging process can be achieved with one hand, making the installation steps more convenient, while also ensuring the stability of the electrical connection of the equipment.

[0018] 2. The heating guide wire, temperature measuring guide wire and temperature measuring element inside the heated breathing circuit connected by the utility model will not be affected by the gas environment inside the circuit, thereby ensuring the heating effect of the circuit and the accuracy of temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance of a device using the utility model.

[0020] Figure 2 for Figure 1 HH view in,

[0021] Figure 3 for Figure 2 A in the enlarged view,

[0022] Figure 3a for Figure 3 A magnified diagram of the coordination between the middle hook and the slot.

[0023] Figure 4 A schematic diagram of a heating breathing circuit connected to the utility model is shown in FIG.

[0024] Figure 5 for Figure 4 II view in,

[0025] Figure 6 for Figure 5 The enlarged view of point B in the figure,

[0026] Figure 7 It is a schematic diagram of another heating breathing circuit connected with the utility model.

[0027] Figure 8 for Figure 7 The enlarged view of point C in the figure,

[0028] Fig. 9 for Figure 8 The enlarged view of D in the figure,

[0029] Fig.10 for Figure 8 The enlarged schematic diagram of the inner pipeline in

[0030] Fig.10a for Fig.10The temperature measuring wire is also set in the rib structure diagram,

[0031] Fig.11 for Figure 1 Schematic diagram of the structure of the outlet joint of the heated breathing tube.

[0032] Fig.12 for Fig.11 Medium KK view,

[0033] Fig.13 for Fig.12 The enlarged view of point E in the figure,

[0034] Fig.14 A schematic diagram of the circuit connection principle of a heating breathing tube connected to the utility model is shown in FIG.

[0035] Fig.15 The utility model is a schematic diagram of another heating breathing circuit connection principle.

[0036] in:

[0037] 1 is a heated breathing tube, 101 is a rib, 102 is a tube wall, 1021 is a tube membrane, 103 is a heating guide wire, 104 is a temperature measuring guide wire, and 105 is an outer tube sleeve;

[0038] 2 is the air inlet connector of the heated breathing circuit, 201 is the automatic reset button, 2011 is the button part, 2012 is the hinge part, 2013 is the hook, 20131 is the hook slope, 2014 is the hinge shaft, 2015 is the spring, 2016 is the spring seat, 2017 is the button limit card plate; 202 is the connector inner tube, 2021 is the hinge block, 203 is the terminal pin, and 204 is the connector shell;

[0039] 3 is a mainframe housing, 301 is a housing limiting rib, 3011 is a limiting rib raised portion, 30111 is a raised portion inclined surface, 3012 is a slot, 302 is an elbow, and 303 is an elbow accommodating cavity;

[0040] 4 is a heated breathing tube outlet connector, 401 is a temperature measuring element, 402 is a connecting wire, 403 is a temperature measuring circuit board, 404 is a connector housing, 405 is a protrusion, 6 is a temperature measuring terminal, 7 is a heating terminal, and 8 is a grounding terminal. DETAILED DESCRIPTION

[0041] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0042] like Figures 1 to 3As shown, the utility model includes a main body shell 3 and a heated breathing circuit air inlet connector 2, wherein the main body shell 3 is provided with an elbow 302 and a shell limiting rib 301 with a slot 3012, and the shell limiting rib 301 is provided on one side of the elbow 302, and the heated breathing circuit air inlet connector 2 is provided with a rotatable automatic reset button 201, and one end of the automatic reset button 201 is provided with a hook 2013 that cooperates with the slot 3012, and the other end is elastically supported by a spring 2015, and the rear end of the heated breathing circuit air inlet connector 2 is connected to the heated breathing circuit 1. When the utility model is used, when the heated breathing circuit air inlet connector 2 is connected to the elbow 302, it is connected to the main body, and as shown in FIG. Figure 3 As shown, the user does not need to press any button, but only needs to push the heated breathing circuit air inlet connector 2 into the elbow 302 to complete the connection operation. During this pushing process, the hook 2013 at the front end of the automatic reset button 201 is first lifted up and then falls into the slot 3012 to lock the heated breathing circuit air inlet connector 2 and the main body shell 3. The operation is simple and convenient. When disassembling, the user first presses the automatic reset button 201 to lift the hook 2013 out of the slot 3012, and then the user can pull out the heated breathing circuit air inlet connector 2 with one hand.

[0043] like Figure 3 As shown, the heated breathing circuit air inlet connector 2 includes a connector housing 204 and a connector inner tube 202 disposed in the connector housing 204, wherein the front end of the connector inner tube 202 is sealed and plugged (in this embodiment, a sealing ring) in the elbow 302, and the rear end is connected to the heated breathing circuit 1, and the automatic reset button 201 is disposed between the connector housing 204 and the connector inner tube 202, and the automatic reset button 201 includes a hinged portion 2012, and the hinged portion 2012 is provided at the head end. The hook 2013 is provided, and a button part 2011 is provided at the tail end of the hinge part 2012. A hinge block 2021 is provided in the middle of the joint inner tube 202, and the middle of the hinge part 2012 is hinged to the hinge block 2021 through a hinge shaft 2014. A spring seat 2016 is provided at the rear end of the joint inner tube 202, and the lower end of the spring 2015 is provided in a groove on the spring seat 2016, and the button part 2011 is elastically supported by the upper end of the spring 2015.

[0044] like Figure 3 As shown, the connector housing 204 is provided with an opening for exposing the button portion 2011 to facilitate the operator to press the button. In addition, a button limiting card plate 2017 is provided at the rear end of the button portion 2011 to abut against the inner wall of the connector housing 204, thereby limiting the upward displacement of the button portion 2011.

[0045] like Figure 3As shown, the host shell 3 is provided with an elbow accommodating cavity 303, and the elbow 302 is arranged in the elbow accommodating cavity 303, and the shell limiting rib 301 is provided on the host shell 3 on the opening side of the elbow accommodating cavity 303, and the shell limiting rib 301 includes a limiting rib protrusion 3011, and the limiting rib protrusion 3011 is arranged on the outside of the slot 3012 and engages with the inside of the hook 2013, and the shape design of the limiting rib protrusion 3011 and the hook 2013 needs to ensure that the two can be tightly engaged, and at the same time ensure that the heated breathing tube inlet connector 2 can be smoothly pushed in and ensure the stability of the electrical connection of the device. Figure 3a As shown, in this embodiment, a raised portion inclined surface 30111 is provided on the upper side of the front end of the limiting rib raised portion 3011, and a hook inclined surface 20131 is provided on the lower side of the front end of the hook 2013. When the heating breathing circuit air inlet connector 2 is pushed in, the hook inclined surface 20131 abuts against the raised portion inclined surface 30111 and causes the hook 2013 to be automatically lifted, thereby not affecting the pushing in of the heating breathing circuit air inlet connector 2. After the hook 2013 passes over the limiting rib raised portion 3011, under the action of the spring 2015, the hook 2013 automatically falls down and is clamped into the clamping groove 3012.

[0046] like Figures 4 to 10 As shown, the tube wall 102 of the heated breathing tube 1 is provided with a heating guide wire 103 and a temperature measuring guide wire 104. Figure 1 and Figures 11 to 13 As shown, the end of the heated breathing tube 1 is provided with a heated breathing tube outlet connector 4, and a temperature measuring element 401 is provided inside the heated breathing tube outlet connector 4. The temperature measuring guide wire 104 is connected to the temperature measuring element 401 to detect the gas temperature in the tube, and the heating guide wire 103 is energized to heat the gas in the tube. Figure 3 As shown, a terminal pin 203 is provided on one side of the elbow 302 to connect with the guide wire to achieve electrical connection.

[0047] The utility model can select different heating breathing pipeline 1 structures according to actual needs, such as Figures 4 to 6 As shown, in one embodiment of the utility model, the heated breathing tube 1 adopts a single-layer tube structure, and a spiral rib 101 is provided on the outside of the tube wall 102 of the heated breathing tube 1, and a heating guide wire 103 and a temperature measuring guide wire 104 are provided inside the rib 101, wherein the heating guide wire 103 is arranged close to the tube wall 102 and is energized to achieve heating, and the temperature measuring guide wire 104 is arranged in the middle of the rib 101, as shown in FIG. Figure 6As shown, a tube membrane portion 1021 is provided on the tube wall 102 of the heated breathing tube 1, and a heating guide wire 103 is provided between the tube membrane portion 1021 and the rib 101 to achieve a firm positioning. In this embodiment, the heating guide wire 103 and the temperature measuring guide wire 104 are both provided in the rib 101, wherein the heating guide wire 103 is provided in the tube wall 102 to ensure the heating effect, and the temperature measuring guide wire 104 is provided in the middle of the rib 101 and is separated from the heating guide wire 103 to avoid the mutual influence between the two, thereby ensuring accurate temperature measurement, and at the same time, the heating guide wire 103 and the temperature measuring guide wire 104 are both provided outside the heated breathing tube 1, and will not be affected by the gas environment with a certain humidity and temperature inside the tube.

[0048] And as Figures 7-10 As shown, in another embodiment of the utility model, the heated breathing circuit 1 adopts a double-layer circuit structure, which includes an outer outer sleeve 105 in addition to the inner tube wall 102, wherein the outer side of the tube wall 102 is spirally wound with independent ribs 101 and temperature measuring guide wires 104, and the ribs 101 are provided with heating guide wires 103, and the heating guide wires 103 are arranged closely to the inner tube wall 102, as shown in FIG. Fig. 9 As shown, a tube membrane portion 1021 is also provided on the tube wall 102 of this embodiment, and a heating guide wire 103 is provided between the tube membrane portion 1021 and the rib 101. The heating guide wire 103 is energized to achieve heating, and the temperature measuring guide wire 104 is provided on the outside of the rib 101 to be separated from the heating guide wire 103 to avoid mutual influence. At the same time, the outer sleeve 105 in this embodiment can adopt a corrugated tube to achieve that the pipeline can withstand bending while protecting the temperature measuring guide wire 104 and the rib 101 from external influences.

[0049] And as Fig.10a As shown, in another embodiment of the present invention, the heated breathing tube 1 also adopts a double-layer tube structure, but the heating guide wire 103 and the temperature measuring guide wire 104 on the inner tube wall 102 are both arranged in the rib 101.

[0050] In addition, in the prior art, the heating guide wire 103 and the temperature measuring guide wire 104 are of the same thickness, but the utility model has found through experiments that the heating guide wire 103 can be thinner, which has no effect on the heating function and can reduce costs. Therefore, the heating guide wire 103 of the utility model is thinner than the temperature measuring guide wire 104.

[0051] The utility model can also select the number of terminals of the heating wire 103 and the temperature measuring wire 104 according to actual needs, wherein Fig.14As shown, in one embodiment of the utility model, four electrical terminals can be used, and the embodiment includes two temperature measuring terminals 6 and two heating terminals 7, wherein the ends of the temperature measuring wire 104 are respectively connected to the corresponding temperature measuring terminals 6, and the ends of the heating wire 103 are respectively connected to the corresponding heating terminals 7. The temperature measuring element 401 is provided with a thermistor. When the working voltage is applied to the heating terminal 7, the current flows through the heating wire 103 to form a loop to heat the heating wire 103, and the temperature measuring terminal 6 is connected in series with the thermistor. As the gas temperature in the heated breathing circuit 1 changes, the resistance of the thermistor in the temperature measuring element 401 will change. Therefore, by monitoring the resistance of the thermistor, the change of the gas temperature in the heated breathing circuit outlet connector 4 can be monitored. This is a well-known technology in the art. For example, the thermistor is used to detect the gas temperature in the CN101018582B patent. The temperature measurement principle of the utility model is the same as that of the patent.

[0052] And as Fig.15 As shown, another embodiment of the utility model can adopt a three-terminal form, which includes a temperature measuring terminal 6, a heating terminal 7 and a grounding terminal 8, wherein one end of the temperature measuring wire 104 is connected to the temperature measuring terminal 6, and the other end is connected to the grounding terminal 8, and one end of the heating wire 103 is connected to the heating terminal 7, and the other end is also connected to the grounding terminal 8. When heating, the control system controls to disconnect the circuit of the temperature measuring terminal 6 and applies a heating working voltage to the grounding terminal 8. At this time, current flows through the heating wire 103 to achieve power-on heating. When measuring temperature, the control system controls to disconnect the circuit of the heating terminal 7 and applies a temperature measuring working voltage to the grounding terminal 8. At this time, the purpose of detecting the change in resistance of the thermistor in the temperature measuring element 401 is achieved.

[0053] like Figures 11 to 13 As shown, a protrusion 405 is provided on the inner wall of the connector housing 404 of the heated breathing circuit outlet connector 4, and a temperature measuring element 401 is provided in the protrusion 405. The temperature measuring element 401 is wrapped by the protrusion 405 and will not be affected by the internal gas environment of the circuit. In this embodiment, the protrusion 405 and the connector housing 404 are integrally injection molded.

[0054] like Figures 11 to 13 As shown, in one embodiment of the present invention, a temperature measuring circuit board 403 is provided on the outer wall of the connector housing 404, a connecting wire 402 is provided in the protrusion 405, and the temperature measuring element 401 is connected to the temperature measuring circuit board 403 (PCB board) through the connecting wire 402. In another embodiment of the present invention, the connecting wire 402 can be directly welded to the heating wire 103, thereby eliminating the temperature measuring circuit board 403 and other structures.

[0055] The heated breathing circuit air inlet connector 2, the heated breathing circuit 1 and the heated breathing circuit outlet connector 4 can be integrally formed by soft rubber encapsulation injection molding. In addition, the temperature measuring circuit board 403 may not be arranged inside the connector housing 404, and the temperature measuring circuit board 403 may be transferred to the host housing 3, or the installation position of the temperature measuring circuit board 403 may be selected and designed according to actual product needs.

[0056] The working principle of the utility model is:

[0057] The utility model facilitates the connection and disassembly of the heated breathing tube 1 and the host, wherein the connection Figure 3 As shown, the user does not need to press any button, but only needs to push the heated breathing circuit air inlet connector 2 into the corresponding elbow 302 to connect with the host, and in this process, the hook 2013 at the front end of the automatic reset button 201 is first lifted up and then falls into the slot 3012 to realize the locking connection between the heated breathing circuit air inlet connector 2 and the host housing 3. The operation is simple and convenient, and when disassembling, the user first presses the automatic reset button 201 to lift the hook 2013 out of the slot 3012, and then the user can pull out the heated breathing circuit air inlet connector 2 with one hand.

[0058] In addition, the utility model arranges the heating guide wire 103 and the temperature measuring guide wire 104 on the outside of the tube wall 102 of the heated breathing tube 1 to avoid being affected by the internal gas environment of the tube. At the same time, the temperature measuring guide wire 104 is separated from the heating guide wire 103 to avoid mutual influence between the two. The temperature measuring element 401 in the heating breathing tube outlet connector 4 is wrapped by the protrusion 405 and will not be affected by the internal gas environment of the tube, thereby ensuring the heating effect of the tube and the accuracy of temperature measurement.

Claims

1. A heated breathing circuit connector assembly, characterized in that: The invention comprises a main body shell (3) and a heating breathing pipeline air inlet connector (2), wherein the main body shell (3) is provided with an elbow (302) and a shell limiting rib (301) with a slot (3012), and the shell limiting rib (301) is arranged on one side of the elbow (302); a rotatable automatic reset button (201) is provided on the heating breathing pipeline air inlet connector (2), and one end of the automatic reset button (201) is provided with a hook (2013) matched with the slot (3012), and the other end is elastically supported by a spring (2015).

2. The heated breathing circuit connector assembly according to claim 1, characterized in that: The heated breathing tube air inlet connector (2) comprises a connector shell (204) and a connector inner tube (202), wherein the front end of the connector inner tube (202) is sealed and plugged into the elbow (302), and the rear end is connected to the heated breathing tube (1), and an automatic reset button (201) is arranged between the connector shell (204) and the connector inner tube (202), and the automatic reset button (201) comprises a hinged portion (2012), and the front end of the hinged portion (2012) is provided with a hook (2013). 13) A button portion (2011) is provided at the tail end, a hinge block (2021) is provided in the middle of the joint inner tube (202), and the middle of the hinge portion (2012) is hinged to the hinge block (2021), a spring seat (2016) is provided at the rear end of the joint inner tube (202), and the lower end of the spring (2015) is arranged in a groove on the spring seat (2016), and the button portion (2011) is elastically supported by the upper end of the spring (2015).

3. The heated breathing circuit connector assembly according to claim 2, characterized in that: The joint housing (204) is provided with an opening for exposing the button portion (2011), and a button limiting card plate (217) is provided at the rear end of the button portion (2011).

4. The heated breathing circuit connector assembly according to claim 1, characterized in that: An elbow accommodating chamber (303) is provided in the main housing (3), and the elbow (302) is arranged in the elbow accommodating chamber (303). The housing limiting rib (301) is provided on the main housing (3) at one side of the opening of the elbow accommodating chamber (303).

5. The heated breathing circuit connector assembly according to claim 1 or 4, characterized in that: The housing limiting rib (301) comprises a limiting rib protrusion (3011), and the limiting rib protrusion (3011) is arranged on the outside of the clamping groove (3012) and is clamped with the inside of the clamping hook (2013).

6. The heated breathing circuit connector assembly according to claim 5, characterized in that: The upper side of the front end of the limiting rib protrusion (3011) is provided with a protrusion inclined surface (30111), and the lower side of the front end of the hook (2013) is provided with a hook inclined surface (20131).

7. The heated breathing circuit connector assembly according to claim 1, characterized in that: The rear end of the heated breathing tube air inlet connector (2) is connected to the heated breathing tube (1); a spiral rib (101) is provided on the outside of the tube wall (102) of the heated breathing tube (1); and a heating guide wire (103) and a temperature measuring guide wire (104) are provided inside the rib (101); wherein the heating guide wire (103) is arranged in close contact with the tube wall (102), and the temperature measuring guide wire (104) is arranged in the middle of the rib (101).

8. The heated breathing circuit connector assembly according to claim 1, characterized in that: The rear end of the heated breathing tube air inlet connector (2) is connected to the heated breathing tube (1), and the heated breathing tube (1) comprises an inner tube wall (102) and an outer outer sleeve (105), wherein ribs (101) and a temperature measuring guide wire (104) are spirally wound in parallel on the outer side of the tube wall (102), a heating guide wire (103) is arranged inside the ribs (101), and the heating guide wire (103) is arranged in close contact with the tube wall (102).

9. The heated breathing circuit connector assembly according to claim 7 or 8, characterized in that: The two ends of the temperature measuring wire (104) are respectively connected to the corresponding temperature measuring terminals (6), and the two ends of the heating wire (103) are respectively connected to the corresponding heating terminals (7).

10. The heated breathing circuit connector assembly according to claim 7 or 8, characterized in that: One end of the temperature measuring wire (104) is connected to the temperature measuring terminal (6), and the other end is connected to the grounding terminal (8); one end of the heating wire (103) is connected to the heating terminal (7), and the other end is connected to the grounding terminal (8).

Images