CN205127036U - Disposable two -chamber laryngeal mask air flue pipe - Google Patents

Abstract

The utility model discloses a disposable double-cavity laryngeal mask airway catheter, which comprises a cuff, an inflatable tube, an indicating bag, a one-way valve, an airway catheter and a machine end interface; The inflatable tube is connected, one end of the inflatable tube is connected with the indicator bag, and the other end is connected with the cuff; one end of the airway catheter is connected with the cuff, and the other end is provided with a machine end interface; There are two independent passages, which are ventilation holes and drainage holes, which isolate the airway from the digestive tract to prevent aspiration of gastric reflux; the cuff has a rucksack structure, and there is also sputum in the cuff collection cavity. The above-mentioned double-lumen laryngeal mask airway catheter has the advantages of good sealing, which can prevent aspiration of gastric reflux, good safety, and easy insertion.

Description

A disposable double-lumen laryngeal mask airway catheter

technical field

The utility model relates to a medical appliance, in particular to a disposable double-cavity laryngeal mask airway catheter.

Background technique

The laryngeal mask is generally used for clinical surgical anesthesia and rescue of dangerous patients to replace endotracheal intubation or respiratory masks and other equipment. After the inflatable mask is inflated, the inflatable mask forms an annular seal on the patient's throat, and the gas reaches the lungs of the human body through the ventilation pipe to supply air to the lungs.

At present, the commonly used laryngeal mask is a single-lumen laryngeal mask, and aspiration is one of the serious complications that may occur with ordinary single-lumen laryngeal mask ventilation. Although the incidence rate is low, the prognosis is poor. Due to the limitations in the structural design of the existing laryngeal mask, the position where it is inserted into the hypopharyngeal cavity can cause the esophageal sphincter to not be completely closed, and the airway cannot be absolutely sealed. Therefore, when the intra-abdominal pressure or intra-gastric pressure increases due to various reasons, the stomach contents are likely to flow back into the esophagus, and further flow up to the entrance of the esophagus or even the oral cavity, and then the reflux can be mistakenly inhaled into the trachea with positive pressure ventilation middle. Therefore, the inability to prevent gastric content reflux and aspiration is a fatal shortcoming that common laryngeal masks all exist at present.

The utility model patent No. 200820180309.3 discloses a disposable single-lumen silicone rubber laryngeal mask, which includes a ventilation catheter and an inflatable mask connected to it. The inflatable mask consists of a hollow cylindrical airbag and an airbag seat as a whole. The outer edge is connected with an inflatable tube, and a spiral stainless steel wire reinforcement lining is embedded in the tube wall of the ventilation tube. There is a ring-shaped groove that can be fixedly bonded to the inflatable cover. The above-mentioned disposable single-chamber silicone rubber laryngeal mask can be used for routine operation patients, and can also be used as an emergency airway treatment device for patients who encounter difficulties in tracheal intubation or patients undergoing cardiopulmonary resuscitation. However, the above-mentioned disposable single-lumen silicone rubber laryngeal mask cannot solve the problems of gastric content reflux and aspiration.

Contents of the invention

Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a disposable double-lumen laryngeal mask airway catheter with good sealing performance, which can prevent aspiration of gastric reflux material, has good safety and is easy to insert.

The technical solution adopted by the utility model to solve the technical problem is: a disposable double-cavity laryngeal mask airway catheter, including a mask bag, an inflatable tube, an indicating bag, a one-way valve, an airway catheter and a machine end interface; The one-way valve is connected to the inflation tube through the indicator bag, one end of the inflation tube is connected to the indicator bag, and the other end is connected to the cuff; one end of the airway catheter is connected to the cuff, and the other end is provided with a machine port; The airway catheter is provided with two independent channels, which are a ventilation hole and a drainage hole, which isolate the airway from the digestive tract and prevent aspiration of gastric reflux. The cuff has a rucksack structure. When inflated, the air bag clings to the posterior pharyngeal wall, pushes the cuff forward, and fits closely with the back of the head to strengthen the sealing effect. A sputum collection cavity is also provided in the cuff to prevent sputum backflow and aspiration and improve safety.

Further, the airway catheter includes an upper airway catheter and a lower airway catheter; one end of the upper airway catheter is connected to the cuff, and the other end is connected to the lower airway catheter; the other end of the lower airway catheter It is connected with the machine end interface; the upper airway catheter has a certain curved radian, which is suitable for the physiological structure design of the oropharynx of the human body and is easy to insert.

Further, the materials of the cuff, air tube and airway catheter are medical PVC or silicone.

Further, the machine end interface is a 15mm conical joint.

The beneficial effects of the utility model are: compared with the prior art, the disposable double-cavity laryngeal mask airway catheter provided by the utility model has the following advantages:

(1) Double-chamber structure design is adopted, and ventilation holes and drainage holes are set in the airway catheter, which can effectively isolate the airway and digestive tract and prevent gastric reflux aspiration;

(2) There is a unique sputum collection cavity in the mask bag, which can prevent sputum reflux and aspiration, and greatly improve the safety of the laryngeal mask;

(3) The upper part of the tracheal tube has a certain curved radian, which is designed to fit the physiological structure of the oropharynx of the human body and is easy to insert;

(4) The design of the rucksack is added. When inflated, the air bag is close to the back wall of the pharynx, pushing the ventilation mask forward, and closely fitting with the larynx, so that the sealing effect is strengthened.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among them, 1-cuff; 2-sputum collection chamber; 3-inflatable tube; 4-indicating bag; 5-one-way valve; 6-airway catheter; 61-upper airway catheter; 62-lower airway catheter; 7-ventilation hole; 8-drainage hole; 9-machine end interface.

detailed description

The utility model will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the utility model and are not intended to limit the scope of the utility model.

Example

As shown in Figure 1, a disposable double-lumen laryngeal mask airway catheter 6 includes a mask bag 1, an inflatable tube 3, an indicator bag 4, a one-way valve 5, an airway catheter 6 and a machine end interface 9; The one-way valve 5 is connected to the inflation tube 3 through the indicator bag 4, one end of the inflation tube 3 is connected to the indicator bag 4, and the other end is connected to the cuff 1; one end of the airway catheter 6 is connected to the cuff 1, The other end is provided with a machine end interface 9 . The machine end interface 9 is a 15mm conical joint. The materials of the cuff 1, the inflation tube 3 and the airway catheter 6 are medical PVC or silica gel. The airway catheter 6 is provided with two independent passages, namely the ventilation hole 7 and the drainage hole 8, which isolate the airway from the digestive tract and prevent aspiration of gastric reflux.

Described airway catheter 6 comprises upper airway catheter 61 and lower airway catheter 62; One end of described upper airway catheter 61 is connected with cuff 1, and the other end is connected with lower airway catheter 62; The other end of 62 is connected with the machine end interface 9; the upper airway catheter 61 has a certain curved radian, which is suitable for the physiological structure design of the oropharynx of the human body and is easy to insert.

The cuff 1 has a rucksack structure, and when inflated, the air bag clings to the posterior pharyngeal wall, pushes the cuff 1 forward, and fits closely with the back of the head to strengthen the sealing effect. The cuff 1 is also provided with a sputum collection cavity 2 to prevent reflux and aspiration of sputum and improve safety.

The basic dimensions of the above-mentioned double-lumen laryngeal mask airway catheter are as follows: unit: mm

When in use, send the inflatable cuff 1 into the throat of the patient, and after reaching the exact position, through the control of the one-way valve 5 and the indicator bag 4, the gas is sent into the inside of the cuff 1 through the inflatable tube 3, and the mask is inflated. Capsule 1 is filled according to the contour of the patient's throat, and the rucksack is close to the posterior pharyngeal wall, forming a good sealing structure. Artificial ventilation can be implemented after the machine end interface 9 at the end of the airway tube 6 is connected to the ventilator. When gastric reflux enters the airway catheter 6 through the cuff 1, it can flow out through the drainage hole 8 and will not enter the vent hole 7 to cause aspiration; at the same time, the sputum collection chamber 2 in the cuff 1 can collect a certain amount sputum, preventing sputum reflux and aspiration, greatly improving the safety performance of the laryngeal mask.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the concept and scope of the present utility model. On the premise of not departing from the design concept of the present utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the present utility model shall fall within the protection scope of the present utility model.

Claims (4)

1. A disposable double-lumen laryngeal mask airway catheter, comprising a mask bag, an inflation tube, an indicator bag, a one-way valve, an airway catheter and a machine end interface; the one-way valve is connected to the inflation tube through an indicator bag , one end of the inflation tube is connected with the indicator bag, and the other end is connected with the cuff; one end of the airway catheter is connected with the cuff, and the other end is provided with a machine end interface; it is characterized in that: the airway catheter There are two independent passages, which are ventilation holes and drainage holes, which isolate the airway from the digestive tract to prevent aspiration of gastric reflux; the cuff has a rucksack structure, and the cuff is also equipped with a Liquid collection chamber. 2. A kind of disposable double-cavity laryngeal mask airway catheter as claimed in claim 1, is characterized in that: described airway catheter comprises upper airway catheter and lower airway catheter; One end is connected with the cuff, and the other end is connected with the lower airway catheter; the other end of the lower airway catheter is connected with the machine end interface; the upper airway catheter has a certain curved radian. 3. A disposable double-lumen laryngeal mask airway catheter as claimed in claim 1, characterized in that: the material of the cuff, the inflation tube, and the airway catheter is medical PVC or silica gel. 4. A disposable double-lumen laryngeal mask airway catheter as claimed in claim 1, characterized in that: the machine end interface is a 15mm conical joint.