Connecting elbow

Abstract

The invention discloses a connecting elbow, and relates to the technical field of medical instruments. Comprising an elbow body, one end of the elbow body is connected with a laryngeal mask, the other end of the elbow body is connected with a breathing pipeline, and an air port communicated with the outside is formed in the elbow body; the sealing piece is movably arranged at the position of the air port and can conduct the air port in a one-way mode, and when the air port is conducted, air in the elbow body can be exhausted to the outside through the air port. The connecting elbow provided by the invention can reduce accumulation of carbon dioxide in a human body, the elbow and a breathing pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a connecting elbow. Background Art

[0002] Non-intubated thoracic anesthesia refers to a minimally invasive anesthesia technique in which, during thoracic surgery, traditional endotracheal intubation is not used for general anesthesia. This anesthesia method usually involves using a laryngeal mask or other non-endotracheal tubes to maintain the patency of the patient's airway and respiratory management.

[0003] In the existing non-intubated thoracic anesthesia technique, a laryngeal mask is generally connected to the laryngeal inlet of the human body, and an elbow is used outside the laryngeal mask to connect the breathing circuit, and devices such as a ventilator are externally connected through the breathing circuit. The elbow currently used in the anesthesia circuit only serves the functions of circuit connection and turning, and there is no design of any discharge passage and outlet. This results in the carbon dioxide in the circuit can only be discharged through the exhaust valve of the anesthesia machine after passing through a relatively long ineffective cavity return path, and the carbon dioxide cannot be directly discharged near the patient end.

[0004] Since the non-intubated thoracic anesthesia method will cause a decrease in the patient's tidal volume, inevitably resulting in carbon dioxide accumulation, the continuously increasing carbon dioxide level will have an adverse impact on the patient's internal environment, which is not conducive to anesthesia management and surgical operation. Therefore, there is an urgent need to design a technical solution that can reduce carbon dioxide accumulation and more effectively control the carbon dioxide level in the patient's body during the operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a connecting elbow to solve the problems existing in the above-mentioned prior art and be able to reduce carbon dioxide accumulation.

[0006] To achieve the above purpose, the present invention provides the following solutions:

[0007] The present invention provides a connecting elbow, which is actually an anesthesia circuit connecting elbow for non-intubated thoracic anesthesia, including:

[0008] An elbow body, one end of which is used to connect the laryngeal mask, the other end is used to connect the breathing circuit, and an air port communicating with the outside is opened on the elbow body;

[0009] A sealing member, movably arranged at the position of the air port, capable of unidirectionally conducting the air port, and when the air port is conducted, the gas in the elbow body can be discharged to the outside from the air port.

[0010] Preferably, the closing member includes a film with the same cross-section as the air port, one end of the film is sealingly and movably connected to the inner wall of the air port, the other end of the film is able to open the air port when it rotates around the connection point away from one end of the elbow body, and the film is able to close the air port when it rotates in the opposite direction to be parallel to and tightly attached to the cross-section of the air port, at which time the side wall of the film is tightly attached to the inner wall of the air port to achieve sealed abutment.

[0011] Preferably, a limiting assembly is provided in the air port, and the film is provided outside the limiting assembly. When the film is rotated to be parallel to the air port, it can abut against the limiting assembly.

[0012] Preferably, the limiting component is a net bag, which is fixed in the air port and has a plurality of air holes. When the film rotates inwardly to be parallel to the cross section of the air port, it abuts against the net bag.

[0013] Preferably, the limiting component is a sealing ring, which is fixed in the air port, and when the film rotates inwardly to be parallel to the cross section of the air port, the edge of the film abuts against the sealing ring.

[0014] Preferably, it also includes an outer cover, which is located outside the closure, and one end of the outer cover is hinged to the elbow body near the gas port, and the outer cover can seal the gas port, thereby switching the gas port to a state where gas cannot be discharged.

[0015] Preferably, it also includes a sampling port, which is opened at one end of the elbow body close to the laryngeal mask, and the sampling port is externally connected to a sampling instrument, which can collect gas in the elbow body and detect the carbon dioxide content of the collected gas.

[0016] Preferably, the elbow body includes a first connecting pipe and a second connecting pipe that are integrally formed and vertically arranged, one end of the first connecting pipe is used to connect the laryngeal mask, and the other end is provided with the air port; one end of the second connecting pipe is used to connect the breathing circuit, and the other end is connected to the side wall of the first connecting pipe near the air port.

[0017] Preferably, the end of the first connecting pipe away from the air port is provided with an internal thread or an external thread, and the end of the first connecting pipe away from the air port can be sealingly connected with the laryngeal mask thread.

[0018] Preferably, the closure member includes a film arranged in the air port, an annular limiting flange is provided at one end of the air port close to the laryngeal mask, a net bag is provided at one end of the air port away from the laryngeal mask, the film is movably arranged between the limiting flange and the net bag, the diameter of the film is larger than the inner diameter of the limiting flange, and the diameter of the film is smaller than the diameter of the net bag; a plurality of mesh holes are provided on the net bag.

[0019] The present invention has achieved the following technical effects compared with the prior art:

[0020] An air port is opened on the elbow body connecting the laryngeal mask, and a sealing member is arranged at the air port. The sealing member can conduct the air port unidirectionally, so that the carbon dioxide accumulated in the elbow body can be directly discharged from the air port, and the outside air cannot enter the elbow body through the air port, achieving the purpose of directly discharging carbon dioxide near the patient end, so that the carbon dioxide does not need to flow back through a long ineffective cavity path before being discharged, avoiding the accumulation of carbon dioxide in the human body, the elbow and the breathing pipeline, and thus more effectively controlling the carbon dioxide level in the patient's body during the operation. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the state where the film connecting the elbow in one or some embodiments of the present invention is lifted to open the air port;

[0023] Figure 2 Schematic diagram of the state where the film connecting the elbow in one or some embodiments of the present invention closes the air port;

[0024] Figure 3 Schematic diagram of the structure of the elbow connection after removing the film in one or some embodiments of the present invention;

[0025] Figure 4 Schematic diagram of the state where the outer cover of the elbow connection seals the air port in one or some embodiments of the present invention.

[0026] In the figure: 1 - elbow body, 101 - first connecting pipe, 102 - second connecting pipe, 2 - air port, 3 - film, 4 - mesh bag, 5 - outer cover, 6 - sampling port. Detailed Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] The object of the present invention is to provide a connecting elbow to solve the problems existing in the above-mentioned prior art and reduce carbon dioxide accumulation.

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Although non-intubated thoracic anesthesia can reduce tracheal intubation-related complications, reduce the dosage of general anesthetic drugs, and accelerate the postoperative recovery of patients, it also brings some problems that need to be solved. In this anesthesia method, due to the collapse of one surgical lung and the normal ventilation function maintained by the intact pleura on the other side, combined with the effect of anesthetic drugs, the tidal volume will decrease. Tidal volume refers to the volume of air entering and leaving the lungs during a normal respiratory cycle. Under physiological conditions, the tidal volume of an adult is about 500 milliliters, and the respiratory rate is 12-20 times per minute. Under mechanical ventilation conditions, it is one of the set parameters used to determine the amount of air given to the patient per breath. The selection of tidal volume is very important because it directly affects the degree of alveolar expansion and gas exchange efficiency. For adults, the typical tidal volume range is about 5 to 8 milliliters per kilogram of body weight. In different clinical situations, doctors will adjust this value according to the specific situation of the patient to optimize the treatment effect and avoid lung injury.

[0031] In the same anesthesia circuit volume, the decrease in tidal volume caused by non-intubated thoracic anesthesia will result in poor carbon dioxide emission. Although this increase in carbon dioxide is usually mild, in some special cases, effective carbon dioxide removal is very important for maintaining the physiological state during surgery. In order to effectively discharge carbon dioxide in the respiratory circuit and avoid carbon dioxide accumulation in the pipeline, the present invention designs a connecting elbow, which is used for connecting the anesthesia circuit of non-intubated thoracic anesthesia. The anesthesia circuit is a mature and well-known structure; as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, it includes an elbow body 1, one end of which is used to connect the laryngeal mask, and the other end is used to connect the respiratory pipeline. The laryngeal mask and the respiratory pipeline are both existing structures and will not be elaborated. An air port 2 communicating with the outside is provided on the elbow body 1; a closing member is movably provided at the position of the air port 2, which can unidirectionally conduct the air port 2. When the air port 2 is conducted, the gas in the elbow body 1 can be discharged to the outside through the air port 2, and the carbon dioxide accumulated in the elbow body 1 can be directly discharged from the air port 2, and the outside air cannot enter the elbow body 1 through the air port 2, thus achieving the purpose of directly discharging carbon dioxide near the patient end, so that carbon dioxide does not need to pass through a long ineffective cavity return path before being discharged, avoiding carbon dioxide accumulation.

[0032] The elbow body 1 of this embodiment includes a first connecting pipe 101 and a second connecting pipe 102 that are integrally formed and vertically arranged. One end of the first connecting pipe 101 is used to connect to the laryngeal mask, and the other end is provided with an air port 2; one end of the second connecting pipe 102 is used to connect to the breathing pipeline, and the other end is communicated with the side wall of the first connecting pipe 101 near the air port 2; the end of the first connecting pipe 101 away from the air port 2 is provided with internal threads or external threads, and the end of the first connecting pipe 101 away from the air port 2 can be threadedly and sealedly connected to the laryngeal mask.

[0033] In order to make the carbon dioxide emission in the elbow more comprehensive and more sensitive to gas pressure, the sealing member of this embodiment uses a thin film 3 with the same cross-section as the air port 2. The thin film 3 is made of a mature medical plastic. It is in an overall thin sheet-like structure, can maintain its sheet-like structure unchanged, and will not bend or the like. At the same time, it is very light in weight and extremely sensitive to endogenous pressure. After the carbon dioxide gas exhaled by the human body from the laryngeal mask enters the elbow body 1, a slight gas pressure can push the thin film 3 upward to open the air port 2, so that the carbon dioxide is discharged. The carbon dioxide does not need to pass through a long ineffective cavity return path before being discharged, avoiding the accumulation of carbon dioxide at the elbow and the breathing pipeline. When the human body finishes exhaling or inhaling, under the action of the self-weight of the thin film 3 or the inhalation pressure, the thin film 3 rotates downward to be horizontal with the cross-section of the air port 2, realizing the sealing of the air port 2.

[0034] In order to achieve the one-way conduction function and prevent external air from entering the elbow body 1 during the inhalation of the human body, a limiting component is provided in the air port 2 in this embodiment. One end of the thin film 3 is hermetically and movably connected to the inner side wall of the air port 2. When the other end of the thin film 3 rotates away from the elbow body 1 around the connection point, the air port 2 can be conducted. The thin film 3 is arranged outside the limiting component. When the thin film 3 rotates to be parallel to the air port 2, it can abut against the limiting component. At this time, the limiting component limits the thin film 3 and blocks its continuous inward rotation. At this time, the thin film 3 can close the air port 2, preventing external gas from entering the elbow body 1.

[0035] In one embodiment, in order to realize the limiting effect on the inward rotation of the thin film 3 and ensure that it will not hinder the internal connection of the elbow assembly, the limiting component of this embodiment uses a net pocket 4. The outer diameter dimension of the cross-section of the net pocket 4 is the same as the inner diameter dimension of the air port 2. The net pocket 4 is fixedly arranged in the air port 2 in a ring shape and fixedly connected to the inner wall of the air port 2. A plurality of air holes are opened in the net pocket 4, so that the net pocket 4 will not hinder the flow of gas between the elbow assembly and the air port 2; at the same time, the net pocket 4 plays a supporting role. When the thin film 3 rotates inward to be parallel to the cross-section of the air port 2, the thin film 3 fits on the net pocket 4 and closes all the air holes of the net pocket 4. At this time, the air port 2 is integrally closed, and external gas cannot enter the elbow body 1.

[0036] In addition, in another embodiment, the mesh bag 4 can be replaced with a sealing ring. The sealing ring is fixedly arranged in the air port 2 and fixedly connected to the inner side wall of the air port 2. When the film 3 rotates inward to be parallel to the cross-section of the air port 2, the edge of the film 3 abuts against the sealing ring, similar to a closed cover structure, which can seal the opening of the sealing ring. At this time, the one-way conduction function of the air port 2 can also be realized. Even at a very low exhalation pressure, the film 3 can be pushed open to quickly discharge CO2. Under the action of the mesh bag 4 structure or the sealing ring structure, the film 3 automatically resets and seals to prevent external air from flowing back.

[0037] When the air port 2 does not need to work, it is necessary to be able to completely seal the air port 2. To achieve this function, in this embodiment, an outer cover 5 is hinged to one end of the elbow body 1 close to the air port 2. There is a bent buckle at the edge of the outer cover 5, and a convex edge is provided at one end of the elbow body 1 close to the air port 2. When the outer cover 5 is buckled, the bent buckle can be fixedly sealed and buckled at the convex edge, so as to be able to seal the air port 2. At this time, the elbow body 1 as a whole is a normal elbow structure.

[0038] In order to enable medical staff to real-time master the carbon dioxide content in the elbow body 1, in another embodiment, a sampling port 6 is opened on the side wall of the elbow body 1. The sampling port 6 is opened at one end of the elbow body 1 close to the laryngeal mask, and the sampling port 6 is externally connected to an existing sampling instrument, which can collect the gas in the elbow body 1 and detect the carbon dioxide content of the collected gas.

[0039] In another embodiment, the film 3 may not be hinged to the inner wall of the air port 2. The film 3 in this embodiment is movably arranged in the air port 2. An annular limiting flange is provided at one end of the air port 2 in this embodiment close to the laryngeal mask, and a mesh bag 4 is provided at one end of the air port 2 away from the laryngeal mask. The film 3 is movably arranged between the limiting flange and the mesh bag 4. The diameter of the film 3 is larger than the inner diameter of the limiting flange, and the diameter of the film 3 is smaller than the diameter of the mesh bag 4; a plurality of mesh holes are provided on the mesh bag 4. Thus, when exhaling, the air pressure pushes the film 3 to move to the mesh bag 4 and is discharged to the outside through the mesh holes at the edge of the mesh bag 4. When inhaling, or when exhalation ends, the film 3 freely falls onto the limiting flange. The diameter of the film 3 is larger than the inner diameter of the limiting flange, so as to seal the limiting flange, making the air port 2 unable to conduct, and achieving the effect of one-way conduction.

[0040] The present invention provides an air outlet 2 near the patient end, which greatly shortens the carbon dioxide emission path, avoids the problem that carbon dioxide needs to pass through a long dead space for discharge in the traditional design, and improves the emission efficiency. Through the controllable one-way conduction design at the air outlet 2, medical staff can flexibly control the opening and closing of the air outlet 2 according to the surgical process and the patient's condition, achieving precise management of carbon dioxide emissions. The design of the film 3 of the present invention ensures that the gas can only be discharged outward and will not enter the circuit from the outside, effectively ensuring the airtightness and safety of the anesthesia system. The present invention adopts a simple mechanical structure design, without a complex electronic control system, has a low manufacturing cost and is easy to maintain, and can provide an effective technical solution without significantly increasing the medical cost.

[0041] Specific examples are used in the present invention to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A connecting elbow, characterized in that: include: The elbow body has one end for connecting to the laryngeal mask and the other end for connecting to the breathing tube, and the elbow body is provided with an air port for communicating with the outside world; The closing piece is movably arranged at the position of the gas port and can conduct the gas port in a one-way direction. When the gas port is conducted, the gas in the elbow body can be discharged to the outside through the gas port.

2. The connecting elbow according to claim 1, characterized in that: The closing member includes a film having the same cross-section as the air port, one end of the film being sealingly and movably connected to the inner wall of the air port, the other end of the film being able to open the air port when it rotates around the connection point away from one end of the elbow body, and the film being able to close the air port when it rotates in the opposite direction to be parallel to and tightly attached to the cross-section of the air port.

3. The connecting elbow according to claim 2, characterized in that: A limiting assembly is arranged in the air port, and the film is arranged outside the limiting assembly. When the film rotates to be parallel to the air port, it can abut against the limiting assembly.

4. The connecting elbow according to claim 3, characterized in that: The limiting component is a net bag, which is fixed in the air port and has a plurality of air holes. When the film rotates inwardly to be parallel to the cross section of the air port, it abuts against the net bag.

5. The connecting elbow according to claim 3, characterized in that: The limiting component is a sealing ring, which is fixed in the air port. When the film rotates inwardly to be parallel to the cross section of the air port, the edge of the film abuts against the sealing ring.

6. The connecting elbow according to claim 1, characterized in that: It also includes an outer cover, which is located outside the closure, and one end of the outer cover is hinged to the elbow body near the air port, and the outer cover can seal the air port.

7. The connecting elbow according to claim 1, characterized in that: It also includes a sampling port, which is opened at one end of the elbow body close to the laryngeal mask, and the sampling port is externally connected to a sampling instrument, which can collect gas in the elbow body and detect the carbon dioxide content of the collected gas.

8. The connecting elbow according to claim 1, characterized in that: The elbow body includes a first connecting pipe and a second connecting pipe that are integrally formed and vertically arranged, one end of the first connecting pipe is used to connect to the laryngeal mask, and the other end is provided with the air port; one end of the second connecting pipe is used to connect to the breathing circuit, and the other end is connected to the side wall of the first connecting pipe near the air port.

9. The connecting elbow according to claim 8, characterized in that: An end of the first connecting pipe away from the air port is provided with an internal thread or an external thread, and the end of the first connecting pipe away from the air port can be sealingly connected with the laryngeal mask thread.

10. The connecting elbow according to claim 1, characterized in that: The closure member includes a film arranged in the air port, an annular limiting flange is provided at one end of the air port close to the laryngeal mask, a net bag is provided at one end of the air port away from the laryngeal mask, the film is movably arranged between the limiting flange and the net bag, the diameter of the film is larger than the inner diameter of the limiting flange, and the diameter of the film is smaller than the diameter of the net bag; a plurality of mesh holes are provided on the net bag.

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