Improved breathing circuit for disposable anaesthesia machine and breathing machine
By adding a transparent silicone protective cover and a snap clip to the breathing circuit, the problem of the breathing circuit being easily punctured and detached is solved, achieving protection and stable connection of the breathing circuit, which is suitable for mechanical ventilation in clinical anesthesia and ICU.
Patent Information
- Application Number
- CN202423060095.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The existing breathing circuit is easily punctured by sharp objects in the operating room, leading to air leakage and dislodgement, which affects patient safety and poses a risk of dislodgement in special body positions.
A protective cover and a snap-fit clamp are added to the breathing circuit. The protective cover is made of a transparent silicone sleeve, and the snap-fit clamp engages at key interfaces to prevent it from falling off. The protective cover can bend with the tube body, and the snap-fit clamp includes a U-shaped tube clamp and a guide plate to ensure a secure connection.
It effectively prevents the breathing circuit from being punctured or dislodged, ensuring the stability of mechanical ventilation, and is suitable for mechanical ventilation of patients in clinical anesthesia and ICU.
Smart Images

Figure CN223959054U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device manufacturing technology, specifically relating to an improved breathing circuit for disposable anesthesia machines and ventilators. Background Technology
[0002] Breathing circuits are generally used to connect patients to anesthesia and respiratory equipment. They typically consist of a breathing tube and its accessories. Based on their structure, breathing circuits can be categorized into three types: conventional breathing circuits, heated breathing circuits, and three-in-one breathing circuits. Currently, breathing circuits used in clinical anesthesia have thin walls, making them susceptible to puncture or damage from sharp objects in the operating room, such as metal supports. This can lead to air leakage, potentially causing air pollution from inhaled anesthetics, and also prevent patients from achieving the required minute ventilation, seriously threatening patient safety. Furthermore, when patients are in a prone or lateral position, and are obstructed by operating room equipment, there is a risk of the breathing circuit detaching from the endotracheal tube interface, anesthesia machine, or ventilator port, causing difficulties for anesthesiologists. Patients without spontaneous breathing may suffocate due to the inability to receive mechanical ventilation, severely threatening their lives. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide an improved breathing circuit for disposable anesthesia machines and ventilators to overcome the shortcomings of the prior art.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0005] An improved breathing circuit for a disposable anesthesia machine and ventilator is provided, comprising a Y-shaped tube having a first interface and two branched second interfaces. Clips are respectively provided at the first and second interfaces. The clip at the first interface engages between the first interface and an endotracheal intubation interface, and the clip at the second interface engages between the second interface and an anesthesia machine or ventilator interface. Protective covers are respectively provided on the two branched sections of the Y-shaped tube.
[0006] The improved breathing circuit for disposable anesthesia machines and ventilators, as described above, includes a first latching end, a second latching end, and a bridging rod, wherein the first latching end and the second latching end are respectively fixedly connected to the two ends of the bridging rod.
[0007] As described in the improved disposable anesthesia machine and ventilator breathing circuit, the first snap-fit end is a U-shaped tube clamp, and guide plates are respectively provided on the outer edges of the open end of the U-shaped tube clamp. The second snap-fit end has the same structure as the first snap-fit end.
[0008] The improved breathing circuit for disposable anesthesia machines and ventilators, as described above, wherein the protective cover is a tubular sleeve with an opening along the length of the sleeve and extending through the entire sleeve.
[0009] The improved breathing circuit for disposable anesthesia machines and ventilators described herein, wherein the protective cover fits tightly against the bifurcation section of the Y-shaped tube, and the protective cover is flexible and can bend along with the tube.
[0010] The improved disposable anesthesia machine and ventilator breathing circuit described herein, wherein the protective cover is an integrated transparent silicone sleeve.
[0011] The improved disposable anesthesia machine and ventilator breathing circuit described herein, wherein the protective cover is a segmented transparent silicone sleeve.
[0012] The beneficial effects of this utility model's technical solution are:
[0013] An additional protective shield is added to the existing breathing circuit to prevent it from being cut or punctured when in contact with sharp objects. Simultaneously, clips are added to the patient end (where it connects to the endotracheal tube) and the anesthesia machine end to simultaneously secure the endotracheal tube to the breathing circuit, and the anesthesia machine or ventilator to the breathing circuit, effectively preventing detachment. The protective shield and clips in this breathing circuit protect the breathing circuit and prevent tubing detachment, making it widely applicable in clinical anesthesia, ICU endotracheal intubation, and other scenarios requiring mechanical ventilation. Attached Figure Description
[0014] To further illustrate the above-mentioned objectives, structural features, and effects of this utility model, the following will describe this utility model in detail with reference to the accompanying drawings.
[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;
[0016] Figure 2 This is a schematic diagram of another preferred embodiment of the present invention;
[0017] Figure 3 This is a schematic diagram of the buckle structure of a preferred embodiment of the present invention;
[0018] In the diagram: 1. First interface; 2. Second interface; 3. Protective cover; 4. First snap-fit end; 5. Second snap-fit end; 6. Bridging rod; 7. Guide plate. Detailed Implementation
[0019] The terms “utility model” and “this utility model” used in this specification are intended to broadly refer to all subject matter of this specification and any of the following patent claims. Statements containing these terms should not be construed as limiting the subject matter described herein or limiting the meaning or scope of any of the following patent claims. Furthermore, this specification does not attempt to describe or limit the subject matter covered by any claim of any particular component, paragraph, statement, or drawing of this application. The subject matter should be understood with reference to the entire specification, all drawings, and any of the following claims. This utility model may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered limiting.
[0020] The details of the present invention will now be discussed with reference to the accompanying drawings, which are illustrated by way of example only. In the drawings, similar features or components may be labeled with the same reference numerals.
[0021] The use of the terms "comprising," "having," and "including," and variations thereof, herein means to include the items listed herein, their equivalents, and additional items. While reference may be made in the description of the drawings to directions such as above, below, upward, downward, backward, bottom, top, front, rear, etc., for convenience, reference is made relative to the drawings. These directions are not intended to literally accept or limit the invention in any form. Furthermore, terms such as "first," "second," "third," etc., are used herein for illustrative purposes and are not intended to indicate or imply importance or significance.
[0022] See Figure 1 , Figure 2 As shown, the improved breathing circuit for disposable anesthesia machines and ventilators of this utility model includes a Y-shaped tube. The Y-shaped tube has a first interface 1 and two branched second interfaces 2. Clips are respectively provided at the first interface 1 and the second interface 2. The clip at the first interface 1 engages between the first interface 1 and the endotracheal tube interface, and the clip at the second interface 2 engages between the second interface 2 and the anesthesia machine or ventilator interface. Protective covers 3 are respectively provided on the two branched sections of the Y-shaped tube.
[0023] Further, see Figure 3As shown, the clip includes a first clip end 4, a second clip end 5, and a bridging rod 6. The first clip end 4 and the second clip end 5 are respectively fixedly connected to both ends of the bridging rod 6. Specifically, the first clip end 4 is a U-shaped pipe clamp, and guide plates 7 are provided on the outer edges of both sides of the open end of the U-shaped pipe clamp. The guide plates 7 can help control the movement direction of the U-shaped pipe clamp when it is inserted into the pipe body. The second clip end 5 has the same structure as the first clip end 4. Regarding dimensions, referring to the illustrations, the inner diameter of the latch at the location of the endotracheal tube is 7-11 mm, preferably 10 mm, and the inner diameter of the corresponding latch at the other end is 13-17 mm, preferably 15 mm, with the length of the bridging rod 6 in the middle preferably being 35 mm; the inner diameter of the latch at the location of the anesthesia machine or ventilator is 18-22 mm, preferably 20 mm, and the inner diameter of the corresponding latch at the other end is 23-27 mm, preferably 25 mm, with the length of the bridging rod 6 in the middle preferably being 40 mm.
[0024] Referring to the diagram, the protective cover 3 is a tubular sleeve with an opening (not shown in the figure) that runs along the length of the sleeve and through the entire sleeve, making it easy to fit the protective cover 3 onto the Y-shaped tube.
[0025] Furthermore, the protective cover 3 fits tightly against the bifurcation section of the Y-shaped tube (the Y-shaped tube is in a non-stretched state), increasing the friction between the protective cover 3 and the outer surface of the Y-shaped tube. This allows the protective cover 3 to slide back and forth along the tube direction and temporarily stop at the most protected position on the tube, adjusting its position according to the tube's orientation. The protective cover 3 is flexible and can bend with the tube, wrapping around and moving along the tube, allowing adjustment to the optimal position for protection.
[0026] See Figure 1 As shown, in a preferred embodiment, the protective cover 3 is an integrated transparent silicone sleeve, see [reference]. Figure 2 As shown, in another preferred embodiment, the protective cover 3 is a segmented transparent silicone sleeve, preferably a two-segment transparent silicone sleeve. The two sleeves can slide back and forth along the tube direction to different protective parts of the tube. The silicone has good elasticity and low manufacturing cost.
[0027] In this embodiment, the outer surface of the Y-shaped tube of the breathing circuit is threaded, allowing for expansion and contraction and slight bending as needed. The outer diameter of the tube and the outer diameter of the three interfaces are configured as follows: L-type connector: 22 / 15mm, straight connector: 22 / 15mm, 22M, serpentine tube: 22F, 1.8m.
[0028] This invention adds a silicone protective cover to the outside of the tubing, based on the existing breathing circuit, to protect the breathing circuit from punctures or cuts by sharp objects. Simultaneously, a locking clip is installed at the first interface of the Y-shaped tubing, and a locking clip is installed at the patient's endotracheal tube, with the two clips interconnected. Locking clips are also installed at the two second interfaces of the Y-shaped tubing, and a locking clip is installed at the anesthesia machine or ventilator end, with the two clips interconnected. These three locking clips simultaneously secure the endotracheal tube to the breathing circuit, and the anesthesia machine or ventilator to the breathing circuit, effectively preventing the breathing circuit from detaching from the aforementioned interfaces. The protective cover and locking clips in this breathing circuit protect the breathing circuit and prevent tubing detachment, making it widely applicable in clinical anesthesia, ICU endotracheal intubation, and other scenarios requiring mechanical ventilation.
[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An improved breathing circuit for a disposable anesthesia machine and ventilator, characterized in that, The device includes a Y-shaped tube with a first interface and two branched second interfaces. Each of the first and second interfaces is provided with a clip. The clip at the first interface engages with the endotracheal intubation interface, and the clip at the second interface engages with the anesthesia machine or ventilator interface. Protective covers are provided on the two branched sections of the Y-shaped tube.
2. The improved breathing circuit for a disposable anesthesia machine and ventilator as described in claim 1, characterized in that, The clip includes a first clip end, a second clip end, and a bridging rod, wherein the first clip end and the second clip end are respectively fixedly connected to the two ends of the bridging rod.
3. The improved breathing circuit for a disposable anesthesia machine and ventilator as described in claim 2, characterized in that, The first snap-fit end is a U-shaped pipe clamp, and guide plates are provided on both outer edges of the open end of the U-shaped pipe clamp. The second snap-fit end has the same structure as the first snap-fit end.
4. The improved breathing circuit for a disposable anesthesia machine and ventilator as described in claim 1, characterized in that, The protective cover is a tubular sleeve with an opening along the length of the sleeve and extending through the entire sleeve.
5. The improved breathing circuit for a disposable anesthesia machine and ventilator as described in claim 1 or 4, characterized in that, The protective cover fits tightly against the bifurcation section of the Y-shaped tube, and the protective cover is flexible and can bend along with the tube.
6. The improved breathing circuit for a disposable anesthesia machine and ventilator as described in claim 4, characterized in that, The protective cover is an integrated transparent silicone sleeve.
7. The improved breathing circuit for a disposable anesthesia machine and ventilator as described in claim 4, characterized in that, The protective cover is a segmented transparent silicone sleeve.