Anesthesia gas conduit assembly

Abstract

In the field of medical device technology, we provide an anesthesia gas conduit assembly. [Solution] This is an anesthesia gas conduit assembly comprising a main gas conduit 1 and a connecting joint. An annular engagement groove 5 provided on the outer wall of the connecting joint enables a secure, cradling connection with external equipment. A support frame consisting of a connecting ring and an arch-shaped metal member is provided inside the main gas conduit to prevent excessive bending of the conduit and maintain airflow. An identification ring 4 with a convex identification part 6 is provided on the connecting joint to enable quick identification by sight and touch. Furthermore, an elastic sealing member is fitted into the sealing member mounting groove at the end of the connecting joint to ensure reliable airtightness over the long term. This improves connection stability, resistance to bending, identification, and sealing performance. Conventional anesthesia gas conduit assemblies had risks of gas leakage due to loosening of the connection, airflow obstruction due to bending of the conduit, and misconnection due to difficulty in identifying the interface.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and specifically relates to an anesthesia gas conduit assembly.

Background Art

[0002] An anesthesia gas conduit assembly is an important device for delivering a mixed gas of anesthesia gas and oxygen to a patient's airway during clinical anesthesia (e.g., general anesthesia surgery, postoperative analgesia). Usually, it includes a main gas path conduit, a connection joint, a sealing structure, and an auxiliary fixing member, etc. It plays an irreplaceable role in scenarios such as general anesthesia, intensive care, and emergency resuscitation. This type of assembly needs to have excellent airtightness, biocompatibility, flexibility, and operability, and must ensure the stability of gas delivery and the safety of patients.

[0003] Currently, many of the anesthesia gas conduit assemblies widely used clinically have a connection structure between their main gas path conduits and connection joints that is fixed or a simple snap type. Such a structure can meet the basic airtightness at the initial use, but due to repeated insertion and removal operations and long-term continuous use, fatigue of the material and wear of the structure occur, which easily leads to loosening of the connection and a decrease in sealing performance. As a result, there may be gas leakage and intrusion of external contaminants, which has an adverse impact on the precise control of anesthesia depth and the respiratory safety of patients.

[0004] Also, many existing conduit assemblies do not have an effective support and protection mechanism for the bending of the conduit in terms of design. In clinical applications, especially when the patient's body position changes or transportation is required, the conduit is prone to local excessive bending or, in some cases, flattening (crushing), which causes an increase in air flow resistance and interruption of ventilation. This not only affects the normal delivery of anesthesia gas but also involves the risk of carbon dioxide accumulation and decreased oxygenation.

[0005] Furthermore, existing assemblies suffer from insufficient standardization of interfaces across different brands and models. Differences in connection fitting dimensions and locking mechanisms can lead to misconnections and fitting difficulties in clinical practice. Particularly in emergencies, this increases the difficulty for healthcare professionals to quickly identify and correctly connect fittings, raising the risk of operational errors and potentially impacting ventilation efficiency and overall treatment safety. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] This invention provides an anesthesia gas conduit assembly that solves the problems of conventional technologies, such as the connection structure of the main gas conduit and connecting joint being prone to loosening, unstable sealing performance, excessive bending of the conduit during use which easily affects the continuity of gas flow, and the lack of standardized identification features in the interface which easily leads to clinical matching errors. [Means for solving the problem]

[0007] To achieve the above objective, this invention employs the following technical solution: An anesthesia gas conduit assembly, Main gas pipeline and It comprises a connecting joint provided at one end of the main gas conduit, The outer wall of the aforementioned connecting joint is provided with an annular engagement groove for combining with the engagement structure of the external equipment to realize a cradling type connection. A support framework is provided inside the main gas conduit. The support frame includes a first connecting ring, a second connecting ring, and a plurality of arch-shaped metal members positioned between the first and second connecting rings. The first connecting ring and the second connecting ring have their outer walls fixedly connected to the inner wall of the main gas conduit. An identification ring is fitted to the outer circumference of the end of the aforementioned connecting joint. A convex identification portion is provided on the outer circumferential surface of the identification ring. A sealing member mounting groove is provided at the end of the aforementioned connecting joint. An elastic sealing member is fitted into the mounting groove for the sealing member. Anesthesia gas conduit assembly.

[0008] The first and second connecting rings are connected to the inner wall of the main gas conduit by adhesive bonding, and the arch-shaped metal members are uniformly distributed between the first and second connecting rings.

[0009] A positioning structure is provided between the identification ring and the connecting joint, and the positioning structure includes a positioning projection provided on the outer wall of the connecting joint and a positioning groove provided on the inner wall of the identification ring, and the positioning projection and the positioning groove fit together to prevent circumferential rotation of the identification ring.

[0010] The aforementioned protruding identification portion extends along the circumferential direction of the identification ring, has a height of 0.5 mm to 1.5 mm, and its width occupies 1 / 5 to 1 / 3 of the circumference of the identification ring. [Effects of the Invention]

[0011] The anesthetic gas conduit assembly according to this invention, by providing a specific-shaped annular engagement groove on the outer wall of the connecting joint, can form an elastic engagement structure on the interface of external equipment such as anesthesia machines and breathing circuits, and a tight, cradling mechanical lock that receives stress at multiple points. This connection method improves the tensile and torsional resistance of the insertion and removal contacts and effectively distributes stress caused by repeated insertion and removal operations. As a result, problems of loosening of connections due to material fatigue and wear are structurally avoided, and the firm stability of the connection under long-term use is ensured. At the same time, the elastic sealing member fitted into the end of the connecting joint is compressed during insertion and undergoes adaptive deformation, fully filling all assembly gaps. This establishes a highly reliable gas seal barrier, preventing leakage of anesthetic gas and intrusion of external contaminants, and ensuring the sustained airtightness of the gas delivery path.

[0012] This invention incorporates a support framework consisting of connecting rings and arched metal members within the main gas conduit. This framework is fixed to the inner wall of the conduit via the connecting rings, and its evenly distributed arched metal members provide an elastic support network built into the flexible conduit. During clinical use, if the conduit bends due to patient movement, positional adjustment, or piping arrangement, these arched metal members effectively resist and limit excessive bending of the conduit through their own coordinated elastic deformation, preventing localized sharp bends and flattening (collapse) of the conduit wall. This mechanism ensures that the gas flow path inside the conduit remains essentially open regardless of the bending condition, avoiding clinical risks such as sudden increases in airflow resistance, fluctuations in anesthetic depth, and carbon dioxide accumulation caused by ventilation interruptions.

[0013] This invention incorporates a positioning structure that prevents rotation of an identification ring having a convex identification portion into a connecting joint. The convex identification portion is coated with a specific color and shape conforming to medical standards, providing medical professionals with clear and intuitive visual and tactile identification features. The positioning structure ensures that the orientation of the identification portion is fixed after assembly and does not shift out of the visible range due to accidental rotation, thus maintaining the accuracy and consistency of the identification information. This design enables the rapid and accurate differentiation and matching of conduits with different gas types and interface standards, reducing the risk of operational errors such as misconnection of interfaces in high-pressure, busy clinical environments, especially in emergencies. This improves the safety and efficiency of the entire anesthetic ventilation process. [Brief explanation of the drawing]

[0014] [Figure 1] Figure 1 is an overall structural diagram of the present invention. [Figure 2] Figure 2 is a structural diagram of the support frame. [Figure 3] Figure 3 is an exploded view of the overall structure of the present invention. [Modes for carrying out the invention]

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0016] Please refer to FIGS. 1 to 3. An embodiment of the present invention provides a gas conduit assembly for anesthesia, which connects an anesthesia machine and a breathing interface on the patient side to safely and stably deliver anesthesia gas. The assembly includes a main gas path conduit 1, a connection joint 2, a support framework 3, and an identification ring 4.

[0017] The main gas path conduit 1 is a hollow, flexible, cylindrical tube body that forms a gas flow path inside. One end of the main gas path conduit 1 is connected to a gas supply source such as an anesthesia machine, and the other end is connected to an interface such as a breathing mask or tracheal tube on the patient side. The main gas path conduit 1 is made of materials such as medical-grade silicone rubber or polyurethane and has good flexibility and biocompatibility.

[0018] The connection joint 2 is provided at one end of the main gas path conduit 1. The connection joint 2 includes an inner core tube and an outer cylinder. One end of the inner core tube is inserted into the inside of the main gas path conduit 1, and its outer wall is adhesively fixed to the inner wall of the main gas path conduit 1 by a medical adhesive or the like. The other end of the inner core tube extends outward to form an insertion portion, and the outer diameter of the insertion portion is smaller than the outer diameter of the inner core tube body portion and is suitable for insertion with an interface of an external device. The outer cylinder is fitted on the outer periphery of the inner core tube, and one end thereof is fixedly connected to the outer wall of the main gas path conduit 1 by heat fusion or adhesion. An annular gap is formed between the outer cylinder and the inner core tube. An annular engagement groove 5 is provided on the outer wall of the outer cylinder. The annular engagement groove 5 extends along the axial direction of the connection joint 2, and its cross-sectional shape is substantially trapezoidal. It is combined with an elastic engagement structure (not shown) of an external device to realize a holding-type mechanical connection that receives stress at multiple points.

[0019] On the insertion part end face of the connecting joint 2, a seal member mounting groove is provided. The seal member mounting groove is an annular concave groove, and its depth substantially matches the thickness of the elastic seal member described later. The elastic seal member (not shown) is fitted into the seal member mounting groove. The outer diameter of the elastic seal member is larger than the outer diameter of the insertion part, and its inner end face is flush with the insertion part end face or slightly protrudes. During insertion, the elastic seal member undergoes compressive deformation to fill the interface gap and exhibits highly reliable sealing performance.

[0020] Inside the main gas path conduit 1, a support framework 3 is provided. The support framework 3 includes a first connection ring, a second connection ring, and a plurality of arch-shaped metal members arranged between these two connection rings and evenly distributed. In this embodiment, the number of arch-shaped metal members is nine. Each connection ring has its outer wall bonded to the inner wall of the main gas path conduit 1 and fixed by an adhesive. When the main gas path conduit 1 is bent by an external force, the arch-shaped metal members resist excessive refraction by their own elastic deformation and prevent the flattening (collapse) of the conduit. Thereby, the continuous openness of the gas flow path is ensured.

[0021] The identification ring 4 is fitted on the outer wall of the outer cylinder of the connecting joint 2 and is located outside the annular engagement groove 5. The material of the identification ring 4 is medical-grade silicone rubber, and its hardness is set lower than the hardness of the material of the main gas path conduit 1 to facilitate identification when touched by medical staff with their fingers. On the outer peripheral surface of the identification ring 4, a convex identification portion 6 is provided. The convex identification portion 6 extends along the circumferential direction of the identification ring 4 and forms a continuous or intermittent strip-like structure. Its height is from 0.5 mm to 1.5 mm, and the width occupies 1 / 5 to 1 / 3 of the circumferential length of the identification ring 4. The surface of the convex identification portion 6 is coated with a specific color. For example, for medical air, it is black-white, and for medical oxygen, it is white, etc., and color coding conforming to the standard specifications of medical gas piping is made to enable rapid visual identification.

[0022] A positioning structure is provided between the identification ring 4 and the connecting joint 2. This positioning structure includes a positioning projection provided on the outer wall of the outer cylinder of the connecting joint 2 and a positioning recess provided on the inner wall of the identification ring 4. The positioning projection extends along the axial direction of the connecting joint 2, and the positioning recess corresponds to it. When the two are fitted together, the relative rotation of the identification ring 4 with respect to the connecting joint 2 in the circumferential direction is restricted. As a result, the convex identification portion 6 maintains a predetermined orientation even after assembly, preventing misidentification caused by displacement of the identification position due to rotation.

[0023] During clinical use, a secure connection is formed by inserting the insertion portion of the connecting joint 2 into the corresponding interface of the anesthesia machine or breathing circuit and engaging the elastic engagement structure of the external device within the annular engagement groove 5. Healthcare professionals confirm the correct match of the interface type by observing the color and shape of the convex identification portion 6 on the identification ring 4. Even if the main gas conduit 1 is bent during patient movement or positioning, the arched metal member of the support frame 3 elastically deforms, preventing airflow obstruction due to excessive bending of the conduit.

[0024] As described above, the anesthetic gas conduit assembly according to this invention shows significant improvements in connection stability, refraction resistance, accuracy of interface identification, and long-term sealing performance, thus meeting the requirements for highly reliable anesthetic gas delivery devices demanded in clinical settings. [Explanation of symbols]

[0025] 1. Main gas conduit 2 connecting fittings 3. Supporting frame 4. Discriminant ring 5. Annular engagement groove 6. Convex identification part

Claims

1. An anesthesia gas conduit assembly, Main gas pipeline and It comprises a connecting joint fixedly fitted to one end of the main gas conduit, The outer wall of the aforementioned connecting joint is provided with an annular engagement groove for combining with the engagement structure of the external equipment to realize a cradling type connection. A support framework is provided inside the main gas conduit. The support frame includes a first connecting ring, a second connecting ring, and a plurality of arch-shaped metal members positioned between the first and second connecting rings. The first connecting ring and the second connecting ring have their outer walls fixedly connected to the inner wall of the main gas conduit. An identification ring is fitted to the outer circumference of the end of the aforementioned connecting joint. A convex identification portion is provided on the outer circumferential surface of the identification ring. A sealing member mounting groove is provided at the end of the aforementioned connecting joint. An anesthesia gas conduit assembly characterized in that an elastic sealing member is fitted into the mounting groove for the sealing member.

2. The first connecting ring and the second connecting ring are connected to the inner wall of the main gas conduit by adhesive, The anesthesia gas conduit assembly according to claim 1, characterized in that the arch-shaped metal member is evenly distributed between the first connecting ring and the second connecting ring.

3. A positioning structure is provided between the identification ring and the connecting joint. The positioning structure includes a positioning projection provided on the outer wall of the connecting joint and a positioning recess provided on the inner wall of the identification ring. The anesthetic gas conduit assembly according to claim 1, characterized in that the positioning projection and the positioning recess engage with each other to prevent rotation of the identification ring in the circumferential direction.

4. The convex identification portion extends along the circumferential direction of the identification ring, Its height is between 0.5 mm and 1.5 mm. The anesthetic gas conduit assembly according to claim 1, characterized in that its width occupies 1 / 5 to 1 / 3 of the circumference of the identification ring.

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