Breathing pipeline and breathing machine
By employing an inner and outer corrugated tube structure and a double-helix heating wire design in the breathing tubing, the condensation problem was solved, resulting in better heat insulation and heat preservation, and improving patient safety and ventilation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-31
AI Technical Summary
The existing breathing tubing has a large amount of condensation on its inner wall, which affects ventilation and increases the probability of bacterial growth, posing a safety hazard to patients.
It adopts a double-layer structure consisting of an inner corrugated tube and an outer corrugated tube, and sets a double-helix heating wire inside the inner corrugated tube to form a heat preservation cavity. By heating the gas, it brings it close to the human body temperature, reducing the heat exchange between the gas and the outside.
It effectively reduces condensation, minimizes the impact on ventilation and patient safety, lowers the probability of bacterial growth, and improves the thermal insulation and heat preservation performance of the breathing tubing.
Smart Images
Figure CN224056417U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical equipment, in particular to a breathing pipeline and a breathing machine. BACKGROUND
[0002] As an effective means to replace the self-ventilation function, the breathing machine has been widely used in the respiratory failure caused by various reasons, anesthesia and respiratory management during major operation, respiratory support treatment and emergency resuscitation, and occupies a very important position in the modern medical field.
[0003] The gas source of the breathing machine is conducted to the patient through the breathing pipeline. The inner wall surface of the existing breathing pipeline has a large amount of condensed water, which not only affects the mechanical ventilation of the breathing pipeline, but also causes the condensed water to flow into the patient's body, affecting the safety of the patient, and the large amount of condensed water also increases the probability of bacterial growth. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a breathing pipeline and a breathing machine in view of the problem that the inner wall surface of the existing breathing pipeline has a large amount of condensed water, thereby affecting ventilation, patient safety and increasing the probability of bacterial growth.
[0005] A breathing pipeline comprises:
[0006] An inner bellows pipe has a gas passage;
[0007] An outer bellows pipe is sleeved on the outer side of the inner bellows pipe, and the inner bellows pipe and the outer bellows pipe are arranged at intervals to form a heat preservation cavity; and
[0008] A double helix heating wire is arranged in the inner bellows pipe and used for heating the gas in the gas passage.
[0009] In one of the embodiments, the inner bellows pipe further has an air inlet and an air outlet which are connected to both ends of the gas passage; the breathing pipeline further comprises a first connector, one of the air inlet and the air outlet of the inner bellows pipe is connected to the first connector, and one end of the double helix heating wire is fixed to the first connector.
[0010] In one of the embodiments, the breathing pipeline further comprises a fixing frame, the fixing frame is fixed to the inner bellows pipe and abuts against one end of the double helix heating wire which is away from the first connector.
[0011] In one of the embodiments, the fixing frame comprises a plurality of supports, all the supports are arranged radially away from the first connector, one end of all the supports close to the first connector abuts against the double helix heating wire, and the other end of all the supports away from the first connector is fixed in the corrugated groove of the inner bellows pipe.
[0012] In one of the embodiments, each bracket comprises an inclined portion and a supporting portion, the inclined portion is arranged obliquely relative to the axial direction of the inner bellows, the supporting portion is located at one end of the inclined portion and extends along the radial direction of the inner bellows, and the supporting portion is fixed in the corrugated groove of the inner bellows.
[0013] In one of the embodiments, the double helix heating wire is sleeved on the fixing frame at the end opposite to the first joint, and abuts against the fixing frame.
[0014] In one of the embodiments, the first joint is further connected with a heating wire joint, and the heating wire joint is used for connecting the double helix heating wire with an external power supply.
[0015] In one of the embodiments, the first joint comprises a first inner ring matching portion and a first outer ring matching portion arranged concentrically, one end of the inner bellows is sleeved outside the first inner ring matching portion, and one end of the outer bellows is sleeved outside the first outer ring matching portion.
[0016] The breathing pipeline further comprises a second joint, the other one of the gas inlet and the gas outlet of the inner bellows is matched with the first joint, the second joint comprises a second inner ring matching portion and a second outer ring matching portion arranged concentrically, the other end of the inner bellows is sleeved outside the second inner ring matching portion, and the other end of the outer bellows is sleeved outside the second outer ring matching portion.
[0017] Another aspect of the present application further provides a breathing machine, comprising a breathing machine body and the breathing pipeline in any of the above embodiments, and the breathing pipeline is connected with the breathing machine body.
[0018] In one of the embodiments, the breathing machine body has a gas outlet, the gas outlet is communicated with one end of the gas channel, and the other end of the gas channel is communicated with the patient end.
[0019] The breathing pipeline and the breathing machine can heat the gas flowing in the gas channel by arranging the double helix heating wire in the gas channel of the inner bellows, so that the gas is closer to the human body temperature, and the outer bellows is arranged outside the inner bellows to form a heat preservation cavity with the inner bellows, so that the breathing pipeline has good heat insulation and heat preservation performance, and the heat exchange between the gas in the gas channel of the inner bellows and the outside is reduced, thereby reducing the condensation phenomenon caused by the temperature difference of the inner wall of the inner bellows.
[0020] In summary, since the gas channel of the breathing pipeline is connected between the gas outlet of the breathing machine body and the patient end, the formation of condensed water in the gas channel is reduced, the influence of the condensed water on ventilation and patient safety is reduced, and the probability of bacterial breeding is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 FIG. 1 is a structural schematic diagram of a breathing pipeline in one or more embodiments of the present application.
[0022] Figure 2 As shown in the exploded structural schematic view of the breathing tube. Figure 1
[0023] Figure 3 As shown in the cross-sectional structural schematic view of the breathing tube. Figure 1
[0024] Figure 4 As shown in the cross-sectional structural schematic view of the breathing tube from another perspective. Figure 1
[0025] Figure 5 As shown in the structural schematic view of the fixing frame in the breathing tube. Figure 2 BRIEF DESCRIPTION OF DRAWINGS
[0026] Breathing tube 100, inner corrugated tube 10, gas channel 11, gas inlet 12, gas outlet 13, corrugated groove 14, outer corrugated tube 20, double helix heating wire 30, first joint 40, first inner ring matching part 41, first outer ring matching part 42, heating wire joint 50, second joint 60, second inner ring matching part 61, second outer ring matching part 62, fixing frame 70, support 71, inclined part 711, support part 712, heat preservation cavity A.
[0027] DETAILED DESCRIPTION
[0028] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0029] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0034] Figure 1 This is a schematic diagram of the structure of a breathing tubing in one or more embodiments of this application. Figure 2 for Figure 1 The diagram shown is an exploded view of the breathing tubing. Figure 3 for Figure 1 The diagram shows a cross-sectional view of the breathing tubing. (See attached diagram.) Figures 1-3The breathing tubing 100 provided in one embodiment of this application includes an inner corrugated tube 10, an outer corrugated tube 20, and a double-helix heating wire 30. The breathing tubing 100 of this application can be used in a ventilator, a medical device that can artificially replace spontaneous breathing. The breathing tubing 100 is part of the ventilator; when the inner and outer walls of the breathing tubing 100 have different temperatures, condensation will form inside the breathing tubing 100.
[0035] The inner bellows 10 of this embodiment has a gas channel 11 through which gas supplied to the patient flows. The outer bellows 20 is sleeved on the outside of the inner bellows 10, and the inner bellows 10 and the outer bellows 20 are spaced apart to form a heat preservation cavity A.
[0036] A corrugated pipe is a pipe with a corrugated cross-section. The specific cross-sectional shape of each corrugation in a corrugated pipe can be triangular, semi-circular, trapezoidal, etc., without any specific restrictions.
[0037] The spacing between the inner corrugated pipe 10 and the outer corrugated pipe 20 means that there is a radial gap between them, so as to form a certain radial space between the outer wall of the inner corrugated pipe 10 and the inner wall of the outer corrugated pipe 20. This space is the insulation cavity A. The insulation cavity A can be filled with air, evacuated, or filled with some insulation material.
[0038] The double-helix heating wire 30 is located inside the inner bellows 10 and is used to heat the gas in the gas channel 11.
[0039] The double-helix heating wire 30 is formed by simultaneously spiraling two heating wires. One end of the two heating wires can be connected, and the other end is connected to the positive and negative terminals of a power source, thereby conducting electricity to generate heat. In the embodiment of this application, the extending direction of the double-helix heating wire 30 is parallel to the extending direction of the inner bellows 10. Furthermore, there is a gap between the double-helix heating wire 30 and the inner wall of the inner bellows 10 to prevent the heat from the double-helix heating wire 30 from being directly transferred to the inner bellows 10 and damaging it.
[0040] The breathing tubing 100 of this application embodiment, by providing a double-helix heating wire 30 inside the inner corrugated tube 10, can heat the gas flowing in the gas channel 11 to make it closer to the human body temperature. Furthermore, by adding an outer corrugated tube 20, a heat-insulating cavity A is formed with the inner corrugated tube 10, giving the breathing tubing 100 good heat insulation and heat preservation performance. This reduces the heat exchange between the gas in the gas channel 11 of the inner corrugated tube 10 and the outside world, thereby reducing the condensation phenomenon on the inner wall of the inner corrugated tube 10 caused by temperature difference.
[0041] Specifically, in the embodiments of this application, the inner bellows 10 further has an inlet 12 and an outlet 13 connecting the two ends of the gas channel 11. The inlet 12 can be connected to the ventilator body of the ventilator, which is used to deliver gas to the inlet 12, and the outlet 13 is connected to the patient end. The breathing tubing 100 also includes a first connector 40, one of the inlet 12 and the outlet 13 of the inner bellows 10 is mated with the first connector 40, and one end of the double-helix heating wire 30 is fixed to the first connector 40.
[0042] By setting the first connector 40, it is easy to connect one end of the inner bellows 10 to the patient end or the ventilator body, and since one end of the double helix heating wire 30 is fixed to the first connector 40, it can provide a fixed foundation for the double helix heating wire 30.
[0043] Furthermore, the first connector 40 is also connected to a heating wire connector 50, which is used to connect the double-helix heating wire 30 to an external power source.
[0044] By connecting the heating wire connector 50 to the first connector 40, the double helix heating wire 30 can be connected more easily and reliably.
[0045] Specifically, the first connector 40 is a 120-degree elbow, comprising a first interface and a second interface. The central axis of the first interface forms a 120-degree angle with the central axis of the second interface. The first interface connects to one of the air inlet 12 or air outlet 13 of the inner bellows 10, and the second interface connects to the patient end or the ventilator body. The heating wire connector 50 is positioned opposite and flush with the first interface. In this way, one end of the double-helix heating wire 30 can be routed in a straight line from the first interface to the heating wire connector 50, simplifying the connection wiring and making the structure of the first connector 40 and the heating wire connector 50 more compact.
[0046] Furthermore, preferably, the air inlet 12 of the inner bellows 10 is connected to the first connector 40. Since one end of the double-helix heating wire 30 is fixed to the first connector 40, and the first connector 40 is also connected to a heating wire connector 50, if the air outlet 13 of the inner bellows 10 is connected to the first connector 40, the heating wire connector 50 would be located at the patient's end, causing inconvenience. Therefore, connecting the air inlet 12 of the inner bellows 10 to the first connector 40 allows the heating wire connector 50 to be connected to an external power source further away from the patient's end, improving the ease of connection.
[0047] Combination Figure 4In the embodiments of this application, one end of the outer corrugated pipe 20 is also mated with the first connector 40. Specifically, the first connector 40 includes a first inner ring mating part 41 and a first outer ring mating part 42 arranged concentrically. One end of the inner corrugated pipe 10 is sleeved on the outside of the first inner ring mating part 41, and one end of the outer corrugated pipe 20 is sleeved on the outside of the first outer ring mating part 42.
[0048] In this way, the first connector 40 can simultaneously fix the outer corrugated pipe 20 and the inner corrugated pipe 10, and maintain a gap between the outer corrugated pipe 20 and the inner corrugated pipe 10 to stably form the heat insulation cavity A, further improving the heat insulation and heat preservation performance of the breathing tube 100.
[0049] In some embodiments, the breathing tubing 100 further includes a second connector 60, wherein the other of the air inlet 12 and air outlet 13 of the inner bellows 10 is mated with the second connector 60.
[0050] By providing a second connector 60, it is easy to connect one end of the inner bellows 10 to the patient or the ventilator body.
[0051] Furthermore, the other end of the outer corrugated pipe 20 is also mated with the second connector 60. Specifically, the second connector 60 includes a second inner ring mating part 61 and a second outer ring mating part 62 arranged concentrically. One end of the inner corrugated pipe 10 is sleeved on the outside of the second inner ring mating part 61, and the other end of the outer corrugated pipe 20 is sleeved on the outside of the second outer ring mating part 62.
[0052] In this way, the second connector 60 can simultaneously fix the outer corrugated pipe 20 and the inner corrugated pipe 10, and maintain a gap between the outer corrugated pipe 20 and the inner corrugated pipe 10 to stably form the heat insulation cavity A, further improving the heat insulation and heat preservation performance of the breathing tube 100.
[0053] See Figures 3-5 In some embodiments, the breathing tubing 100 further includes a fixing bracket 70, which is fixed in the inner bellows 10 and abuts against the end of the double helical heating wire 30 facing away from the first connector 40.
[0054] In order to improve the heating effect of the double helix heating wire 30 in the inner bellows 10, the double helix heating wire 30 extends from one end of the first connector 40 along the inner bellows 10 to the other end. Therefore, a fixing bracket 70 is provided at the end facing away from the first connector 40 to abut against the double helix heating wire 30. It can cooperate with the first connector 40 to fix both ends of the double helix heating wire 30, making the fixation of the double helix heating wire 30 in the inner bellows 10 more reliable, thereby improving the reliability of heating.
[0055] Furthermore, the mounting bracket 70 includes multiple supports 71, all of which are arranged radially away from the first connector 40. The end of each support 71 near the first connector 40 abuts against the double-helix heating wire 30, while the end of each support 71 away from the first connector 40 is fixed within the corrugated groove 14 of the inner corrugated tube 10. Specifically, the mounting bracket 70 includes four supports 71; in other embodiments, the mounting bracket 70 may also include three supports 71.
[0056] Since the fixing frame 70 is composed of multiple radially arranged supports 71, all supports 71 can elastically deform towards the center of all supports 71 under external force. Therefore, when the fixing frame 70 is installed in the inner bellows 10, it can be deformed by the pressure of the inner wall of the inner bellows 10, allowing the fixing frame 70 to move within the inner bellows 10. When it moves to the appropriate position, due to the larger inner diameter of the corrugated groove 14, the ends of all supports 71 can be embedded into the corrugated groove 14 under the action of elastic restoring force, thereby fixing the fixing frame 70 within the inner bellows 10. Therefore, the position of the fixing frame 70 can be adjusted according to the specific position of the end of the double helix heating wire 30 away from the first connector 40 within the inner bellows 10, and the fixing of the fixing frame 70 within the inner bellows 10 is reliable, thus ensuring the reliable fixing of the double helix heating wire 30.
[0057] Specifically, each bracket 71 includes an inclined portion 711 and a support portion 712. The inclined portion 711 is inclined relative to the axial direction of the inner bellows 10. The support portion 712 is located at one end of the inclined portion 711 and extends radially along the inner bellows 10. The support portion 712 is fixed in the bellows groove 14 of the inner bellows 10.
[0058] By setting the inclined part 711 to be axially inclined relative to the inner bellows 10, the inclined part 711 can be more elastically deformed under the action of external force, and since the support part 712 extends radially along the inner bellows 10, it can better fit with the inner wall of the bellows groove 14 after being embedded in the bellows groove 14, thereby improving the fixing reliability of the fixing bracket 70.
[0059] In some embodiments, the end of the double-helix heating wire 30 facing away from the first connector 40 is sleeved on the fixing frame 70 and abuts against the fixing frame 70.
[0060] By setting one end of the double helix heating wire 30 facing away from the first connector 40 to be sleeved on the fixing frame 70, the double helix heating wire 30 can be fixed relative to the fixing frame 70 in the circumferential direction, which further improves the fixing reliability.
[0061] Specifically, all the supports 71 converge and connect at the end facing the first connector 40 to form a tip, and the end of the double helical heating wire 30 facing away from the first connector 40 is fitted from this tip and abuts against all the supports 71.
[0062] In another aspect of this application, a ventilator is provided, including a ventilator body and a breathing tubing as described in any of the above embodiments, wherein the breathing tubing is connected to the ventilator body.
[0063] By installing a double-helix heating wire 30 inside the inner corrugated tube 10, the gas flowing in the gas channel 11 can be heated to make it closer to the human body temperature. Furthermore, by adding an outer corrugated tube 20, a heat-insulating cavity A is formed with the inner corrugated tube 10, giving the breathing tube 100 good heat insulation and heat preservation performance. This reduces the heat exchange between the gas in the gas channel 11 of the inner corrugated tube 10 and the outside world, thereby reducing the condensation phenomenon on the inner wall of the inner corrugated tube 10 due to temperature difference.
[0064] Furthermore, the ventilator body has a gas outlet, which is connected to one end of the gas channel 11, and the other end of the gas channel 11 is connected to the patient end.
[0065] By installing a double-helix heating wire 30 in the gas channel 11 of the inner corrugated tube 10, the gas flowing in the gas channel 11 can be heated to make it closer to the human body temperature. Furthermore, by adding an outer corrugated tube 20, a heat insulation cavity A is formed with the inner corrugated tube 10, which gives the breathing tube 100 good heat insulation and heat preservation performance, reduces the heat exchange between the gas in the gas channel 11 of the inner corrugated tube 10 and the outside world, thereby reducing the condensation phenomenon on the inner wall of the inner corrugated tube 10 caused by temperature difference.
[0066] In summary, in this embodiment of the application, since the gas channel 11 of the breathing tubing 100 is connected between the gas outlet of the ventilator body and the patient end, the formation of condensate in the gas channel 11 can be reduced, thereby reducing the impact of condensate on ventilation and patient safety, and reducing the probability of bacterial growth.
[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0068] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A breathing circuit, characterized by, The breathing conduit comprises: an inner corrugated pipe having a gas passage; an outer corrugated pipe sleeved outside the inner corrugated pipe, the inner corrugated pipe and the outer corrugated pipe being spaced to form a heat preservation cavity; and a double helix heating wire arranged in the inner corrugated pipe for heating the gas in the gas passage.
2. Breathing tube according to claim 1, characterized in that The inner corrugated pipe further has a gas inlet and a gas outlet communicating with both ends of the gas passage; the breathing conduit further comprises a first connector, one of the gas inlet and the gas outlet of the inner corrugated pipe is connected with the first connector, and one end of the double helix heating wire is fixed to the first connector.
3. Breathing tube according to claim 2, characterized in that The breathing conduit further comprises a fixing frame fixed in the inner corrugated pipe and abutting against the end of the double helix heating wire away from the first connector.
4. Breathing tube according to claim 3, characterized in that The fixing frame comprises a plurality of supports, all the supports are arranged radially away from the first connector, one end of all the supports close to the first connector abuts against the double helix heating wire, and the other end of all the supports away from the first connector is fixed in the corrugated groove of the inner corrugated pipe.
5. Breathing tube according to claim 4, characterized in that Each of the supports comprises an inclined portion and a supporting portion, the inclined portion is arranged obliquely relative to the axial direction of the inner corrugated pipe, the supporting portion is located at one end of the inclined portion and extends along the radial direction of the inner corrugated pipe, and the supporting portion is fixed in the corrugated groove of the inner corrugated pipe.
6. The breathing tube of claim 3, wherein, The end of the double helix heating wire away from the first connector is sleeved on the fixing frame and abuts against the fixing frame.
7. The breathing tube of claim 2, wherein, The first connector is further connected with a heating wire connector for connecting the double helix heating wire with an external power supply.
8. The breathing tube of claim 2, wherein, The first connector comprises a first inner ring fitting portion and a first outer ring fitting portion arranged concentrically, one end of the inner corrugated pipe is sleeved outside the first inner ring fitting portion, and one end of the outer corrugated pipe is sleeved outside the first outer ring fitting portion. The breathing conduit further comprises a second connector, the other one of the gas inlet and the gas outlet of the inner corrugated pipe is connected with the first connector; the second connector comprises a second inner ring fitting portion and a second outer ring fitting portion arranged concentrically, the other end of the inner corrugated pipe is sleeved outside the second inner ring fitting portion, and the other end of the outer corrugated pipe is sleeved outside the second outer ring fitting portion.
9. A breathing machine characterized by, The breathing conduit comprises a breathing machine body and the breathing conduit as claimed in any one of claims 1-8, the breathing conduit being connected with the breathing machine body.
10. The ventilator of claim 9, wherein, The breathing machine body has a gas outlet, the gas outlet communicates with one end of the gas passage, and the other end of the gas passage communicates with a patient end.