WO2010135871A1

WO2010135871A1 - Laryngeal mask

Info

Publication number: WO2010135871A1
Application number: PCT/CN2009/072039
Authority: WO
Inventors: 邹德伟
Original assignee: 天津美迪斯医疗用品有限公司
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-12-02

Abstract

A laryngeal mask includes a mask sac (1), a ventilating tube (2), an inflation tube (3), an one-way air valve (5) and an air supply joint (6). A hole (8) connected with the inner cavity of the ventilating tube (2) is provided in the middle of the mask sac (1), the mask sac (1) is respectively connected with one end of the ventilating tube (2) and one end of the inflation tube (3), the distal end of the ventilating tube (2) is fitted with the air supply joint (6), another end of the inflation tube (3) is connected with the one-way air valve (5). Another end of said inflation tube (3) is also connected with an inflatable indicating device, said mask sac (1) is made of silicon rubber material, the ventilating tube (2) is made of medical PVC material. Since a helical groove (7) is provided on the adhibition part of the PVC ventilating tube (2), the adhibition area of the PVC ventilating tube (2) is increased, the adhibition intensity is improved, it can prevent from the ventilating tube (2) flaking away since twisting the adhibition part of the mask sac (1) and the ventilating tube (2) for a long time.

Description

Laryngeal mask

Technical field

The utility model belongs to a medical device, in particular to a laryngeal mask which is applied to an expiratory road treatment during surgical anesthesia and rescue of a critically ill patient.

Background technique

Say

It is of great significance to improve the success rate of rescue for patients who are clinically rescued from cardiac arrest or in patients with surgical anesthesia or critically ill patients or for cardiopulmonary resuscitation. When a patient undergoes general anesthesia for surgery, airway management, such as endotracheal intubation, is required to maintain the patient's respiratory function. The currently used ventilating book is easy to cause the patient's cardiopulmonary reaction, and even cause respiratory damage; a laryngeal mask ventilation device has been used in clinical practice and has been successfully applied to surgical anesthesia and critically ill patients, especially for a large number of difficult airways. Patients are the first choice. The laryngeal mask is connected to one end of the vent tube and the inflation tube respectively, and the other end of the vent tube is connected with the air source. The other end of the air tube is connected with a one-way valve, and the cover is inflated and oval, and the air passage is propped up. It is less than the tracheal intubation operation and the patient's pain is reduced. However, in order to reduce the cost, the laryngeal mask is made of non-toxic medical PVC material, which leads to less smooth insertion, and it is very easy to delay the rescue time during the emergency. In the use of the mask, the sealing is poor, resulting in air leakage; at the same time, the patient is prone to rejection.

Utility model content

The utility model aims to overcome the deficiencies in the prior art and provides a laryngeal mask which combines two materials of non-toxic medical PVC and silicone rubber, which not only ensures good biocompatibility, but also reduces patient rejection, and can also Reduce product costs.

In order to achieve the above object, the utility model is realized by the following technical solutions: a laryngeal mask, comprising a cover, a snorkel, an inflation tube, a one-way air valve and a gas source joint, wherein the cover is provided with an opening connected to the inner cavity of the snorkel The hole and the cover are respectively connected with one end of the snorkel and the inflation tube, the other end of the vent tube is connected with the air source joint, and the other end of the air tube is connected with the one-way air valve, and the other end of the gas tube is also connected with Inflating indicating device, the cover is made of silicone rubber material, and the vent pipe is made of medical PVC material.

The inflation indicating device is an inflatable gas cylinder or a pressure indicator.

The outer surface of the adhesive end of the vent pipe and the cover is provided with an adhesive groove, and the inner surface of the adhesive end of the cover There are bonding grooves.

The bonding groove is a spiral groove.

A grille is provided at the opening in the middle of the cover.

Beneficial effects: Silicone rubber is used to directly contact the throat of the patient's throat, which ensures the good biocompatibility and sealing of the silicone cover. The snorkel that is not in direct contact with the human throat is made of non-toxic PVC, which reduces The manufacturing cost of the laryngeal mask. Since a spiral groove is added to the bonding portion of the PVC vent pipe, the bonding area of the vent pipe is increased, and the bonding strength is improved, and the vent pipe can be prevented from peeling off due to the long-term twisting of the bonding portion of the hood and the vent pipe.

DRAWINGS

Figure 1 is a schematic view showing the structure of the utility model with an inflatable gas cylinder;

Figure 2 is a schematic view showing the structure of the bonding groove on the vent pipe body;

Figure 3 is a schematic view of the structure of the utility model with a pressure indicator.

detailed description

The specific embodiments provided in accordance with the present invention are described in detail below in conjunction with the preferred embodiments. Referring to the drawings, a laryngeal mask includes a cover 嚢 1, a vent tube 2, an inflation tube 3, a one-way air valve 5 and a gas source joint 6, and an opening 8 connected to the vent tube inner chamber is provided in the middle of the hood.嚢 respectively connected to one end of the snorkel and the inflation tube, the distal end of the vent tube is connected with a gas source joint, the other end of the gas tube is connected with a one-way air valve, and the other end of the gas tube is also connected with an inflation indicating device. The cover is made of silicone rubber material, and the vent pipe is made of medical PVC material. The outer surface of the adhesive end of the vent pipe and the cover is provided with an adhesive groove 7. The inner surface of the adhesive end of the cover is provided with an adhesive groove (not shown). The bonding groove is a spiral groove for increasing the contact area between the PVC vent pipe and the adhesive, improving the bonding strength, and preventing the peeling of the bonding portion of the silicone rubber cover and the PVC vent tube due to long time twisting. Or open the glue. The PVC snorkel tube itself is bent at a certain angle, the silicone rubber cover is oval, and the center of the inner circle of the cover is provided with an opening, and the opening may have a barrier or a barrier.

Example 1

A laryngeal mask includes a hood, a vent tube, an inflation tube, a one-way air valve and a gas source joint, and an opening connected to the vent tube inner chamber is arranged in the middle of the hood, and the hood is respectively connected with one end of the vent tube and the inflation tube, The air source connector is installed at the distal end of the snorkel, and the other end of the air tube is connected to the one-way air valve, and the inflatable air valve 4 is connected between the air tube and the one-way air valve. A laryngeal mask includes a hood, a vent tube, an inflation tube, a one-way air valve and a gas source joint, and an opening connected to the vent tube inner chamber is arranged in the middle of the hood, and the hood is respectively connected with one end of the vent tube and the inflation tube, A gas source joint is attached to the distal end of the snorkel, and the other end of the gas tube is connected to the pressure indicator 9.

The above description is only a preferred embodiment of the present invention and is not intended to limit the structure of the present invention in any way. Any modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the present invention are still within the scope of the technical solutions of the present invention.

Claims

Claim

1. A laryngeal mask comprising a hood, a vent tube, an inflation tube, a one-way air valve and a gas source joint, wherein an opening connected to the vent tube inner chamber is provided in the middle of the hood, and the hood is respectively connected with the vent tube and the inflation tube end The air supply connector is connected to the distal end of the vent pipe, and the other end of the gas pipe is connected to the one-way air valve, and the other end of the gas pipe is also connected with an inflation indicating device, and the cover is made of silicone rubber material. The trachea is made of medical PVC material.

2. A laryngeal mask according to claim 1 wherein: said inflation indicating means is an inflatable pneumatic or pressure indicator.

The laryngeal mask according to claim 1, wherein the outer surface of the adhesive end of the vent pipe and the cover is provided with an adhesive groove, and the inner surface of the adhesive end of the cover is provided with an adhesive groove.

The laryngeal mask according to claim 1 or 3, wherein: the bonding groove is spiral