CN210698447U - Positive pressure ventilation mask with gastric tube access - Google Patents

Abstract

The utility model discloses a positive pressure ventilation breathing mask with a stomach tube channel, which comprises a plastic cover body and a mask air bag arranged around the plastic cover body, wherein the plastic cover body is provided with an oxygen tube channel, and the mask air bag is provided with an inflation one-way valve; the stomach tube channel is arranged at the joint of the mask air bag and the facial skin of the mandible and transversely penetrates through the mask air bag; the stomach tube passageway is cylindrical, and its side is at the position of meeting with mandible facial skin complete disconnection and form the strip gap opening. The utility model provides high leakproofness and patient of face guard wear the comfort.

Description

Positive pressure ventilation mask with gastric tube access

technical field

The utility model relates to a breathing mask, in particular to a positive pressure ventilation breathing mask with a gastric tube channel.

Background technique

In the process of hospital treatment (such as ICU), gastric tube combined with non-invasive positive pressure ventilation is often used for treatment, but the combined use of the two groups of treatment methods is likely to cause air leakage in the patient's non-invasive ventilator mask; for gastrointestinal decompression For patients who need general anesthesia with a gastric tube inserted before surgery, before tracheal intubation is performed after anesthesia induction and muscle relaxants, and positive pressure artificial assisted breathing is performed with an anesthesia mask, due to the existence of the gastric tube, the mask cannot be used very well. It fits well with the mouth and face, and there is air leakage. Therefore, solving the air leakage of the mask has become an important clinical problem.

In order to solve this difficulty, experts have tried many methods, including increasing the oxygen flow when inhaling oxygen, using cotton balls to pack air leaks in the mask, or using gauze or rubber gloves to pack them, and even forcibly placing the gastric tube on the cheek or nose. The side ditch is pressed to prevent air leakage, but the effect is not significant and the waste of oxygen is caused, which increases the medical cost. In addition, some experts also adopted the method of punching a hole on one side of the transparent plastic mask according to the size of the gastric tube. Although the effect is good, the operation is too troublesome, which is not conducive to positive pressure ventilation during anesthesia induction, nor is it conducive to clinical application.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a positive pressure ventilation breathing mask with a gastric tube channel which can reduce the amount of leaked gas.

In order to achieve the above purpose, the positive pressure ventilation mask with gastric tube channel designed by the present invention includes a plastic cover body and a mask airbag arranged around the plastic cover body, the plastic cover body is provided with an oxygen tube channel, and the The mask airbag is provided with an inflation check valve; the mask airbag is also provided with a gastric tube channel that can accommodate a gastric tube, and the gastric tube channel is arranged at the junction of the mask airbag and the facial skin of the mandible, and transversely penetrates the mask airbag ; The gastric tube channel is cylindrical, and its side face is completely cut off at the junction with the facial skin of the mandible and forms a strip-shaped slit opening.

Preferably, the respirator further comprises a channel plug that completely plugs and seals the gastric tube channel. After sealing, the breathing mask can also be used for oxygen inhalation for patients without a gastric tube, which saves the trouble of replacing the mask with and without a gastric tube, and is also beneficial for oxygen delivery during anesthesia or ICU rescue treatment.

Preferably, the channel plug is tethered to the plastic cover by a tether (including a string, a thin plastic tube, a thin rubber tube, etc.) to prevent the channel plug from being lost.

Preferably, the channel plug is a cylindrical balloon.

Preferably, the wall surface of the gastric tube channel and the mask airbag are sealed and connected by cautery technology, which can ensure the airtightness of the mask airbag.

Preferably, the aperture of the gastric tube channel is 4.8-5.8 mm, more preferably 5.5 mm. For patients who clinically need gastrointestinal decompression, the doctor will insert a gastric tube. The type of gastric tube suitable for adults ranges from 12Fr to 18Fr, and usually 14Fr and 16Fr gastric tubes are selected. The outer diameter of 14Fr gastric tube is about 4.67mm, the outer diameter of 16Fr gastric tube is about 5.33mm, and the outer diameter of 18Fr gastric tube is about 5.99mm. The aperture of the gastric tube channel is set between the outer diameter of the gastric tube of 14Fr and 18Fr, which can adapt to various types of gastric tubes, and the gap between the gastric tube and the gastric tube channel is not large. versatility and tightness.

Preferably, the width of the slit opening is 1˜3 mm, more preferably 2 mm.

Compared with the prior art, the beneficial effects of the present utility model are:

1) A special gastric tube channel is reserved. When a patient with a gastric tube wears a mask, the contact area between the gastric tube and the skin is small, which reduces the resistance of the gastric tube to the mask and ensures the relative sealing of the mask. It has better anti-leakage effect, avoids hypoxia caused by insufficient oxygen ventilation in patients, and saves medical resources; at the same time, it reduces the pressure of gastric tube on the face to ensure the comfort of patients, especially suitable for gastric tube insertion Positive pressure ventilation in the perioperative period, especially in the induction period of anesthesia.

2) Install the gastric tube by inserting it from the opening of the slit, without removing the drainage bag, and the installation is more convenient; at the same time, the head end of the gastric tube usually has a large aperture, and the structure of the opening on the side of the gastric tube channel is adopted, and the head end of the gastric tube does not need to be along the The gastric tube channel is axially pierced, which is beneficial to reduce the aperture of the gastric tube channel and improve the sealing performance of the mask.

3) It is pointed out by research results that the situation such as the patient's pulse oxygen saturation and exhaled tidal volume by fixing the gastric tube on the harder part of the patient (mandible) is significantly better than fixing the gastric tube on the soft part of the patient. The gastric tube channel is located at the mandible in the harder part, so the effect of reducing air leakage of the non-invasive ventilator mask is more significant.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the positive pressure ventilation breathing mask with gastric tube channel designed by the utility model (the viewing angle is slightly inclined in the figure).

FIG. 2 is a schematic diagram of a rear view of the breathing mask in FIG. 1 .

FIG. 3 is a schematic view of the bottom view of the breathing mask in FIG. 1 .

Among them: oxygen tube channel 1, plastic cover 2, mask balloon 3, gastric tube channel 4, channel plug 5, inflation check valve 6, slit opening 7, tether 8

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIGS. 1-3 , the positive pressure ventilation mask with gastric tube channel designed by the present invention includes a plastic cover body 2 and a mask airbag 3 .

The mask airbag 3 is arranged around the plastic cover body 2, and is provided with an inflation check valve 6 for inflating the mask airbag 3, and a gastric tube channel 4 that can accommodate a gastric tube. The gastric tube channel 4 is arranged at the junction of the mask airbag 3 and the facial skin of the mandible, at the wider end of the mask. The gastric tube channel 4 is cylindrical and penetrates the mask airbag 3 laterally. The side surface of the gastric tube channel 4 is completely disconnected at the interface with the facial skin of the mandible and forms a long slit opening 7. The slit opening 7 is used to embed the gastric tube, and its width is 2mm. When not inflated, the slit opening 7 It can be opened so that the gastric tube can be inserted laterally into the gastric tube channel 4 from the slit opening 7 . The wall surface of the gastric tube channel 4 and the mask airbag 3 are sealed and connected by cauterization technology, which can ensure the sealing of the mask airbag 3 .

The aperture (diameter) of the gastric tube channel 4 is 5.5mm, and the doctor will insert the gastric tube for patients who need gastrointestinal decompression clinically. The types of gastric tubes suitable for adults range from 12Fr to 18Fr, and usually 14Fr and 16Fr gastric tubes are selected. The outer diameter of 14Fr gastric tube is about 4.67mm, and the outer diameter of 16Fr gastric tube is about 5.33mm. The aperture of the gastric tube channel 4 is set to 5.5mm, which can adapt to various types of gastric tubes, and the gap between the gastric tube and the gastric tube channel 4 is not large, and the adjustment of the inflation and deflation of the mask airbag 3 ensures good versatility and sealing. sex. When the gastric tube is placed in the gastric tube channel 4, and the gap between the two is slightly larger, air is filled through the inflation check valve 6, the mask airbag 3 is full, and the edge of the channel is subjected to increased gas pressure, so that the gastric tube and the reserved The gap of the gastric tube channel 4 disappears; for example, when the outer diameter of the gastric tube is slightly larger than the aperture of the gastric tube channel 4 (eg, the outer diameter of the 18Fr gastric tube is 5.99mm), part of the air is drawn out through the inflation check valve 6 to make the pressure between the gastric tube and the channel. decrease.

The plastic cover 2 is made of transparent plastic, and the oxygen tube channel 1 and the channel plug 5 are arranged on it. Oxygen tube channel 1 is used to deliver oxygen to the patient. The channel plug 5 is a cylindrical air bag with a length of 1 cm and an outer diameter of 5 mm, and is tied to the plastic cover 2 by a tether 8 (using a thin rubber tube) to prevent the channel plug 5 from being lost. The channel plug 5 can completely plug and seal the gastric tube channel 4. After sealing, the breathing mask can also be used for oxygen inhalation for patients without a gastric tube, which saves the trouble of replacing the mask with and without a gastric tube, and is also beneficial to anesthesia. Oxygen infusion during or ICU rescue treatment.

When the breathing mask is used for a patient without a gastric tube, the channel plug 5 is inserted into the gastric tube channel 4, and the mask airbag 3 is inflated to clamp the channel plug 5 to seal the gastric tube channel 4, which can be used as a conventional no gastric tube breathing mask. use.

When the breathing mask is used for a patient with a gastric tube, the gastric tube is laterally embedded into the gastric tube channel 4 from the slit opening 7, and the mask airbag 3 is inflated to clamp the gastric tube to achieve sealing. same.

Claims (7)

1. A positive pressure ventilation breathing mask with a gastric tube channel, comprising a plastic cover body (2) and a mask airbag (3) arranged around the plastic cover body (2), and oxygen is provided on the plastic cover body (2) A tube channel (1), the mask airbag (3) is provided with an inflation check valve (6); it is characterized in that: the mask airbag (3) is also provided with a gastric tube channel (4) capable of accommodating a gastric tube , the gastric tube channel (4) is arranged at the junction of the mask airbag (3) and the mandibular facial skin, and transversely penetrates the mask airbag (3); the gastric tube channel (4) is cylindrical, and its side faces The mandibular-facial skin junction is completely broken and a strip-shaped slit opening (7) is formed. 2. The positive pressure ventilation breathing mask with gastric tube channel according to claim 1, characterized in that: the breathing mask further comprises a channel plug (5), and the channel plug (5) can connect the gastric tube channel (4) Plug and seal completely. 3 . The positive pressure ventilation mask with gastric tube channel according to claim 2 , wherein the channel plug ( 5 ) is tethered to the plastic cover body ( 2 ) by a tether ( 8 ). 4 . 4 . The positive pressure ventilation mask with gastric tube channel according to claim 2 , wherein the channel plug ( 5 ) is a cylindrical air bag. 5 . 5. The positive pressure ventilation mask with a gastric tube channel according to any one of claims 1 to 4, characterized in that: the wall surface of the gastric tube channel (4) and the mask airbag (3) are sealed by cautery technology connect. 6 . The positive pressure ventilation mask with gastric tube channel according to any one of claims 1 to 4 , characterized in that: the aperture of the gastric tube channel ( 4 ) is 4.8 to 5.8 mm. 7 . 7. The positive pressure ventilation breathing mask with gastric tube channel according to any one of claims 1 to 4, characterized in that the width of the slit opening (7) is 1 to 3 mm.

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