CN217219809U

CN217219809U - Nasopharyngeal airway structure

Info

Publication number: CN217219809U
Application number: CN202220833225.5U
Authority: CN
Inventors: 张俊波; 赵婷婷; 关舒文; 张驰; 杜晓婉; 李天成
Original assignee: Peking University First Hospital
Current assignee: Peking University First Hospital
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-08-19
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses a nasopharynx air structure, include: a breather pipe; the valve clack component is arranged in the vent pipe and is opened in one direction and used for increasing the upper respiratory resistance of a patient during expiration; the valve clack assembly is at least provided with two valve clacks, one end of each valve clack is fixedly connected with the inner wall of the vent pipe, and the other end of each valve clack freely extends. The utility model discloses a nasopharynx ventilation structure, when the patient breathes in, nasopharynx air vent ventilates unobstructed, increases the resistance when the upper airway exhales during expiration, can reduce upper respiratory tract collapse nature to a certain extent, in addition, to the part because of the pivot that the loop gain changes and leads to or mixed nature respiratory event increases the patient, the accessible increases CO ₂ Descending of retentionLow loop gain, in turn, reduces the severity of the condition.

Description

Nasopharyngeal airway structure

Technical Field

The utility model relates to the technical field of medical treatment, especially, relate to a nasopharynx air conduction structure.

Background

Obstructive Sleep Apnea Syndrome (OSAS) is characterized by a recurrent partial or complete collapse of the upper airway during sleep, with an incidence of 5-10% in middle-aged populations and an increasing annual prevalence with aging population and lifestyle changes. Enlargement of the pharyngeal cavity by upper airway surgery is one of the main treatment options for this disease, however, the perioperative risk of the upper airway surgery in patients with OSAS is significantly higher, especially within 24 hours after surgery, mainly due to edema of the surgical wound and accumulation of anesthetic, and the upper airway may still be severely blocked during short-term sleep after surgery, resulting in sleep hypoxemia even more severe than before surgery.

Much research in the past focuses on perioperative safety of OSAS patients, and partial conservative measures such as continuous oxygen inhalation, bed head elevation, opioid avoidance and the like are limited in relieving postoperative short-term sleep hypoxemia. Noninvasive ventilators are considered to have good clinical effects, but most OSAS patients who receive surgical treatment have poor compliance with ventilators, and the treatment is more difficult to tolerate due to discomfort after the operation, so that the development of a simple and well-tolerated postoperative treatment method is very valuable clinically.

The prior art uses a ventilation tube 1' as shown in fig. 1 in a post-operative patient to improve post-operative hypoxemia to some extent, but the use of this tube has limited effectiveness in some patients.

Disclosure of Invention

The purpose of the utility model is to solve the above problems and provide a nasopharyngeal ventilation structure, the nasopharyngeal airway is smooth when the patient inhales, the resistance when the upper airway exhales is increased when the patient exhales, and the accessible increases CO ₂ The retention reduces the probability of central and mixed respiratory events, improves the sleep hypoxia event caused by the increase of the loop gain, and has better effect of improving the sleep hypoxia blood.

In order to achieve the above objects of the present invention, the present invention provides a nasopharyngeal ventilation structure comprising: a breather pipe; the valve clack component is arranged in the breather pipe and is opened in one direction and used for increasing the upper respiratory resistance when a patient exhales; the valve clack assembly is at least provided with two valve clacks, one end of each valve clack is fixedly connected with the inner wall of the breather pipe, and the other end of each valve clack freely extends.

Preferably, the valve flap is integrally formed with the inner wall of the vent pipe.

Preferably, the valve flap extends from the inner wall of the vent pipe towards the center of the vent pipe.

Preferably, the valve flap extends from the inner wall of the vent pipe in an inclined manner towards the center of the vent pipe.

Preferably, the valve flap is in the shape of a circular arc or an elliptical arc.

Preferably, the radius of the valve flap is smaller than the radius of the vent pipe.

Compared with the prior art, the utility model discloses a nasopharynx air vent has following advantage:

1. the utility model discloses a nasopharynx ventilation structure, simple structure, convenient to use, the preparation is easy, with low costs, safe in utilization, effective, the tolerance is good, has great clinical practical value.

2. The utility model discloses a nasopharynx aeration structure, when the patient breathes in, the nasopharynx air vent ventilates unobstructed, through the area of ventilating that reduces the air vent during expiration, resistance when increasing the upper airway and exhaling can reduce upper respiratory tract collapse nature to a certain extent, and on the other hand to the part because of the maincenter that the loop gain changes and leads to or the patient of mixed nature respiratory event increase, its accessible increases CO ₂ Retention reduces loop gain, which in turn reduces the severity of the condition.

3. The utility model discloses a nasopharynx ventilation structure is applicable to the last air flue operation OSAS patient, still is applicable to the OSAS patient who accepts other general anesthesia operations, has great application crowd, possesses very big commercial prospect.

The present invention will be described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic illustration of a prior art ventilation tube positioned in the nasopharynx of an OSAS patient;

FIG. 2 is a schematic view of the nasopharyngeal airway structure of the present invention during inhalation (or intake);

FIG. 3 is a schematic view of the nasopharyngeal airway structure of the present invention during exhalation (or air discharge);

FIG. 4 is a schematic cross-sectional view of a first embodiment of the nasopharyngeal airway structure of the present invention;

FIG. 5 is a second cross-sectional view of the nasopharyngeal airway structure of the present invention;

fig. 6 is a schematic cross-sectional view of a third embodiment of the nasopharyngeal airway structure of the present invention.

Detailed Description

Clinical studies by the inventors have shown that prior art ventilation tubes have limited effectiveness in some post-OSAS patients and are associated with short-term loop gain effects in post-operation patients, i.e., CO after enlargement of the patient's pharyngeal cavity ₂ Increased exhalation, regulation of body breathing results in increased central or mixed respiratory events. In order to solve the clinical problem, the inventor develops a nasopharyngeal airway structure which can increase the resistance of the upper respiratory tract when a patient exhales, so as to better improve the postoperative short-term sleep blood oxygen of the patient by adjusting the loop gain and improve the perioperative safety of the OSAS patient.

The nasopharyngeal airway structure of the invention can adopt the following structure, including: a breather pipe 1; the valve clack component is arranged in the breather pipe 1 and is opened in one direction and used for increasing the upper respiratory resistance of a patient during expiration; the valve clack component is at least provided with two valve clacks 3, one ends of the valve clacks are fixedly connected with the inner wall of the breather pipe 1, and the other ends of the valve clacks extend freely.

The structure of the nasopharyngeal airway structure of the present invention will be described in detail with reference to the following embodiments.

Example one

The nasopharyngeal airway structure of the embodiment adopts the structure shown in fig. 2 and 3, which comprises: a breather pipe 1; the valve clack component is arranged in the breather pipe 1 and is opened in one direction and used for increasing the upper respiratory resistance when a patient exhales; the valve clack assembly has two valve clacks 3 (as shown in fig. 4), one end of each valve clack is fixedly connected with the inner wall of the vent pipe 1, and the other end of each valve clack extends freely.

Specifically, as shown in fig. 2 and 3, the nasopharyngeal ventilation structure of the present embodiment has a ventilation tube 1, the ventilation tube 1 is a step-shaped ventilation tube, that is, one end of the ventilation tube is an anti-dropping portion with a relatively large diameter, and the anti-dropping outer diameter should be larger than the size of the nostril of the person, so that when the nasopharyngeal ventilation structure of the present embodiment is used, the insertion portion with a relatively small diameter can be inserted into the nasal cavity of the patient and then cross over the tongue root plane, and the anti-dropping portion can be supported outside the nostril of the patient, so as to prevent the nasopharyngeal ventilation structure from slipping into the affected nasal cavity. In order to solve apnea and hypopnea caused by plane stenosis of the tongue root, reduce irritation to the tongue root to the maximum extent, improve tolerance and correspondingly improve treatment effect, the ventilation tube of the embodiment is made of thermoplastic polyurethane elastomer rubber (namely TPU food-grade material). In addition, the cross section of the insertion part in the nasopharyngeal airway structure can be circular (as shown in fig. 4) or elliptical.

In order to increase the upper airway resistance when the patient exhales, a valve flap assembly is disposed inside the ventilation tube 1, and as shown in fig. 4, the valve flap assembly of this embodiment includes two valve flaps 3 symmetrically disposed on the inner wall of the ventilation tube. During the preparation, valve clack and breather pipe 1 adopt the same material, and valve clack and breather pipe 1 integrated into one piece, the one end and the 1 inner wall fixed connection of breather pipe of valve clack, the other end freely extends.

In order to make the valve flap opened in one direction, the valve flap 3 is inclined and extended from the inner wall of the vent pipe 1 toward the center of the vent pipe, and the valve flap 3 may be disposed at the interface of the vent pipe retaining part and the insertion part and inclined and extended from the vent pipe retaining part toward the insertion part (as shown in fig. 2 and 3). Alternatively, the valve flap 3 may be provided at a position of the snorkel insertion portion near the coming-off prevention portion.

The valve clack can be in an arc shape (as shown in fig. 4) or an elliptic arc shape, and the radius of the valve clack is smaller than that of the vent pipe, so that a certain gap is reserved between the two valve clacks when the vent pipe is in an unused initial state.

The nasopharyngeal ventilation structure of the embodiment is characterized in that two valve clacks which can be opened in one way are arranged in the ventilation pipe, so that the two valve clacks can pass throughThe valve flap can adjust the ventilation area in the ventilation pipe, namely the valve flap is opened when a patient inhales (as shown in figure 2), so that the ventilation area of the ventilation pipe is increased, and the smoothness of a nasopharyngeal airway of the patient is ensured when the patient inhales; the flap closes during patient exhalation (as shown in FIG. 3), increasing the resistance of the upper airway during exhalation by increasing CO ₂ Retention reduces the probability of central and mixed respiratory events.

Therefore, the nasopharynx ventilation structure of the embodiment not only ensures the smoothness of the air passage during inspiration, but also can improve the sleep hypoxia event caused by the increase of the loop gain, and has better effect on improving the sleep hypoxia blood. And the nasopharyngeal ventilation structure of the embodiment has simple structure, easy manufacture, effective use effect and good tolerance, and has wide application value to OSAS operation patients or OSAS patients who accept other general anesthesia operations.

Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can modify the principle of the present invention, and therefore, various modifications performed according to the principle of the present invention should be understood as falling into the protection scope of the present invention.

Claims

1. A nasopharyngeal airway structure, comprising:

a breather pipe;

the valve clack component is arranged in the vent pipe and is opened in one direction and used for increasing the upper respiratory resistance of a patient during expiration;

the valve clack assembly is at least provided with two valve clacks, one end of each valve clack is fixedly connected with the inner wall of the vent pipe, and the other end of each valve clack freely extends.

2. The nasopharyngeal ventilation structure of claim 1, wherein the flap is integrally formed with the inner wall of the vent tube.

3. The nasopharynx aeration structure of claim 2 wherein the valve flap extends from the snorkel inner wall toward a snorkel center.

4. The nasopharyngeal aeration structure of claim 3, wherein said flap extends obliquely from said airway tube inner wall toward the airway tube center.

5. The nasopharyngeal aeration structure of any one of claims 1 to 4, wherein the flap is in the shape of a circular arc or an elliptical arc.

6. The nasopharynx venting structure of claim 5 wherein the radius of the valve flap is less than the vent radius.