Nasal and Oral Negative Pressure Air Extraction Device for Special Use in Preventing Poison Gas Spill during Tracheal Intubation of Novel Coronavirus

Abstract

The present invention relates to the field of medical devices, and particularly to an oral and nasal negative pressure air extraction device dedicated to preventing virus spillage during tracheal intubation for COVID-19 patients, comprising: a frame body, an oral ventilation ring, an airway strip, and a strap; the frame body is provided with an oral cavity vacancy at the position of the patient's mouth and a nasal groove structure at the position of the patient's nose; a nasal through hole is provided in the nasal groove structure, and an oral ventilation ring is arranged on the outer side surface of the frame body around the oral cavity vacancy. The internally hollow airway of the oral ventilation ring is an annular airway, and a plurality of air holes are provided on the inner circumferential surface of the oral ventilation ring. A nasal airway connecting the nasal through hole and the annular airway is provided on the oral ventilation ring. The airway strip is arranged on the oral ventilation ring and / or the frame body, and both ends of the airway strip communicate with the annular airway. An air intake port is provided on the annular airway, and both ends of the strap are arranged on the frame body. The device sucks away the virus-containing gas exhaled by the patient through the air holes on the inner circumferential surface of the oral ventilation ring and the nasal airway connecting the nasal through hole.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an oral and nasal negative pressure suction device for preventing virus spillage specially used for endotracheal intubation of the new coronavirus. Background Art

[0002] As we all know, endotracheal intubation is one of the clinical operations that comes into the closest contact with the patient's airway, and is prone to secretion splashing, droplets, aerosol diffusion, etc., and anesthesiologists who perform the operation are prone to infection. The bigger problem is that there are currently a large number of patients waiting for surgical treatment, and it is impossible to use upgraded protection to treat every patient under the current circumstances, but operators with ordinary protection are at great risk when facing patients in the incubation period. Therefore, how to do a good job of protection during endotracheal intubation is a practical problem that anesthesiologists face every day.

[0003] When anesthesiologists are intubating patients, they need to get very close to the patients, open their mouths, open their glottis, and find their airways. Air containing high concentrations of viruses will rush in. Anesthesiologists must complete the operation as quickly as possible to ventilate the patients. Sometimes, difficult intubation cases with poor intubation conditions are a great test for anesthesiologists. In normal intubation, anesthesiologists generally have about 3-5 minutes of operation time, and difficult intubation is a problem for anesthesiologists even in normal times. The longer the operation time, the more disadvantageous it is for patients. For anesthesiologists, the operation time should not exceed 90 seconds, otherwise the chance of contracting COVID-19 will greatly increase. Immersing in air full of high concentrations of viruses will be a great test for anesthesiologists in terms of both technical and psychological endurance. It is also suspected that aerosol dissemination may be a way for the spread of the new coronavirus. Studies have found that when a patient simulator simulates coughing in a supine position, the sagittal distance of the dissemination can reach about 86 cm. The diffusion distance can reach about 26.7 cm during positive pressure ventilation with a mask, so the positive pressure ventilation period before endotracheal intubation also has serious risks.

[0004] In view of the above situation, the current temporary response measure for medical staff to treat critically ill patients during endotracheal intubation is to use a barrier membrane to isolate the patient's head, that is, to wear a transparent plastic hood on the patient's head and open holes in the hood for mask positive pressure ventilation and endotracheal intubation. The benefits of this measure are low cost, a certain degree of isolation of the spread of droplets and aerosols, and avoidance of contamination of medical equipment. However, this temporary method also has the following defects:

[0005] 1. The adhesive tape between the membrane and the consumables has poor bonding reliability. Once the tape falls off, it is easy to cause a loose seal and lose its function.

[0006] 2. There is no air permeability. In a closed state, it is easy for patients to feel suffocated and their body surface temperature rises, which is very dangerous for critically ill patients.

[0007] 3. The face mask acts as a barrier, preventing the doctor's fingers from reaching into the inner area of the patient's mouth during tracheal intubation, increasing the difficulty of the tracheal intubation operation. Prolonging the operation time will cause the patient to experience breath-holding and other situations, increasing the patient's risk.

[0008] 4. Although the face mask is made of transparent plastic material, it reflects light under the surgical lamp irradiation. The reflection of the face mask is very unfavorable for the operating doctor to observe the insertion of the tracheal intubation, greatly increasing the operation difficulty and the risk of tracheal intubation failure. Summary of the Invention

[0009] To solve the above problems, the purpose of the present invention is to provide a special anti-virus overflow oral and nasal negative pressure air extraction device for tracheal intubation of novel coronavirus.

[0010] The purpose of the present invention is achieved through the following technical solutions:

[0011] A special anti-virus overflow oral and nasal negative pressure air extraction device for tracheal intubation of novel coronavirus provided by the present invention includes: a frame body, an oral ventilation ring, an airway strip, and a strap; the frame body is provided with an oral cavity vacancy with an anastomotic opening at the position of the patient's mouth, and a nasal groove structure at the position of the patient's nose; a nasal through hole is provided on the nasal groove structure, an oral ventilation ring is arranged on the outer side surface of the frame body around the oral cavity vacancy, the air passage inside the oral ventilation ring is a ring-shaped airway, several air holes are arranged on the inner circumferential surface of the oral ventilation ring, a nasal airway connecting the nasal through hole and the ring-shaped airway is arranged on the oral ventilation ring, the airway strip is arranged on the oral ventilation ring and / or the frame body, both ends of the airway strip are communicated with the ring-shaped airway, an air connection port for connecting an air suction pump through a trachea is arranged on the ring-shaped airway, and both ends of the strap are arranged on the frame body.

[0012] Further, facial fitting surface structures extend on both the outer sides of the oral cavity vacancy and the nasal groove structure of the frame body, and the curved surface radian of the facial fitting surface structure is anastomotic with the corresponding facial part of the patient.

[0013] Further, the device further includes an airbag, the airbag is arranged on the inner side surface of the frame body, the upper part of the airbag is a triangular trending structure anastomotic with the outer peripheral shape of the nasal groove structure, the lower part of the airbag is an elliptical trending structure anastomotic with the shape of the oral cavity vacancy, and the airbag is in a filled state.

[0014] Further, the end face of the airbag fitting the patient's face is a curved surface anastomotic with the shape of the frame body.

[0015] Further, several air holes are evenly distributed at a circumferential uniform angle on the inner circumferential surface of the oral ventilation ring.

[0016] Further, both the oral ventilation ring and the airway strip are made of silica gel material.

[0017] Further, the airway strip is a semi-elliptical strip that coincides with the trend of the oral ventilation ring and is located at the lower end of the oral ventilation ring.

[0018] Further, the device further includes: a trachea and an inhalation pump; two air intake ports are symmetrically arranged on both sides of the lower part of the airway strip, and the air intake ports are connected to the inhalation pump through the trachea.

[0019] Further, pull rings are respectively arranged on both sides of the frame body, and a connecting strap Ⅰ and a connecting strap Ⅱ are respectively tied to the two pull rings.

[0020] Further, male and female magic tapes are respectively arranged on the connecting strap Ⅰ and the connecting strap Ⅱ.

[0021] When using the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention, the device is worn at the corresponding position on the patient's head, the inhalation pump is turned on, and the inhalation pump inhales air through the trachea and through the air holes in the inner ring of the oral ventilation ring and the nasal airway connecting the nasal passage, sucking away the virus-containing gas exhaled by the patient, so that when the doctor bends down close to the patient's face, the doctor will not be soaked by the virus-containing air exhaled by the patient to the greatest extent, ensuring the life, health and safety of the doctor. The operation is simple, convenient and practical. Description of the Drawings

[0022] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is the usage structure diagram of the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention;

[0024] Figure 2 is the structure diagram of the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention at one angle;

[0025] Figure 3 is the structure diagram of the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention at another angle;

[0026] Figure 4 is the sectional view of the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention at one angle;

[0027] Figure 5 is the sectional view of the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention at another angle;

[0028] Figure 6 is the structure diagram of the airbag in the special anti-virus overflow nasal and oral negative pressure air extraction device for tracheal intubation of novel coronavirus of the present invention;

[0029] Figure 7 It is a structural diagram of a certain angle of the frame body in the special anti-virus overflow mouth and nose negative pressure air extraction device for tracheal intubation of novel coronavirus in the present invention;

[0030] Figure 8 It is a structural diagram of another angle of the frame body in the special anti-virus overflow mouth and nose negative pressure air extraction device for tracheal intubation of novel coronavirus in the present invention;

[0031] Among them, the reference numerals are: 1, frame body; 2, oral ventilation ring; 3, airway strip; 4, oral vacancy; 5, nasal groove structure; 6, nasal through hole; 7, annular airway; 8, air hole; 9, trachea; 10, suction pump; 11, air connection port; 12, facial fitting surface structure; 13, airbag; 14, strap I; 15, strap II; 16, pull ring; 17, nasal airway. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] As Figures 1 to 8 shown, a special anti-virus overflow mouth and nose negative pressure air extraction device for tracheal intubation of novel coronavirus in an embodiment of the present invention includes: a frame body 1, an oral ventilation ring 2, an airway strip 3, and straps; the frame body 1 is provided with an oral vacancy 4 that coincides with the opening of the mouth at the position of the patient's mouth, and a nasal groove structure 5 is provided at the position of the patient's nose; a nasal through hole 6 is provided on the nasal groove structure 5, an oral ventilation ring 2 is arranged on the outer side surface of the frame body 1 around the oral vacancy 4, the internally hollow airway of the oral ventilation ring 2 is an annular airway 7, several air holes 8 are provided on the inner circumferential surface of the oral ventilation ring 2, a nasal airway 17 communicating the nasal through hole 6 and the annular airway 7 is provided on the oral ventilation ring 2, the airway strip 3 is arranged on the oral ventilation ring 2 and / or the frame body 1, both ends of the airway strip 3 communicate with the annular airway 7, an air connection port 11 through which a trachea 9 can be connected to a suction pump 10 is provided on the annular airway 7, and both ends of the strap are arranged on the frame body 1.

[0034] The special anti-virus overflow mouth and nose negative pressure air extraction device for tracheal intubation of the novel coronavirus of the present invention is worn at the corresponding position on the patient's head during use. The air suction pump 10 is turned on, and the air suction pump 10 sucks air through the trachea 9 and through the air holes 8 in the inner circle of the mouth ventilation ring 2 and the nasal airway 17 connecting the nasal through hole 6, sucking away the virus-carrying gas exhaled by the patient, so that when the doctor bends down close to the patient's face, he will not be soaked by the virus-carrying air exhaled by the patient to the greatest extent, ensuring the life, health and safety of the doctor. The operation is simple, convenient and practical.

[0035] Preferably, the facial fitting surface structures 12 extend from both the mouth vacancy 4 of the frame body 1 and the outer side of the nasal groove structure 5, and the curved surface radian of the facial fitting surface structure 12 fits the corresponding facial position of the patient.

[0036] This device is a device for extracting virus gas used during tracheal intubation of infected patients such as those with COVID-19 who are prone to air-borne infection. The frame body 1 of this device fits closely to the outer periphery of the patient's mouth and nose. The frame body 1 is designed with an oval mouth vacancy 4 with an anastomotic opening at the mouth position. At the same time, a nasal groove structure 5 is designed for the patient's nasal position, and a nasal through hole 6 is provided at the nasal position in the nasal groove structure 5. The facial fitting surface structures 12 with a certain width extend from both the mouth vacancy 4 of the frame body 1 and the outer side of the nasal groove structure 5, and the curved surface radian of the facial fitting surface also fits the corresponding facial position of the patient.

[0037] Preferably, the device further includes an airbag 13. The airbag 13 is arranged on the inner side surface of the frame body 1. The upper part of the airbag 13 is a triangular structure that fits the outer periphery of the nasal groove structure 5, and the lower part of the airbag 13 is an elliptical structure that fits the shape of the mouth vacancy 4. The airbag 13 is in a fully inflated state.

[0038] An airbag 13 is fixedly connected to the fitting surface on the inner side surface of the frame body 1 around the nasal groove structure 5 and the mouth vacancy 4. The upper part of the airbag 13 is a triangular structure that fits the outer periphery of the nasal groove structure 5, and the lower part of the airbag 13 is an elliptical structure that fits the ellipse of the mouth vacancy 4. The airbag 13 is in a fully inflated state.

[0039] Preferably, the end face of the airbag 13 that fits the patient's face is a curved surface that fits the shape of the frame body 1.

[0040] The end face of the airbag 13 that fits the face is a curved surface that fits the frame body 1, so that when this device is fixed on the patient's face, it can fully fit the patient's face and can fully achieve a sealing effect, so that the gas exhaled by the patient will not escape from the airbag 13. The gas exhaled from the patient's mouth and nose will only pass through the nasal through hole 6 and the mouth vacancy 4.

[0041] Preferably, a plurality of air holes 8 are evenly distributed at circumferential angles on the inner circle surface of the mouth ventilation ring 2.

[0042] The cross-section of the oral ventilation ring 2 is similar to a rectangle, which can increase the fixed contact area with the outer side of the frame body 1 to ensure stability. The internally hollow airway is the annular airway 7, and a number of air holes 8 are evenly distributed at a circumferential angle on the elliptical side of the inner ring of the oral ventilation ring 2, so that the inside of the oral ventilation ring 2 is communicated with its inner ring area.

[0043] Preferably, both the oral ventilation ring 2 and the airway strip 3 are made of silica gel.

[0044] The oral ventilation ring 2 is fixedly attached to the outer side of the frame body 1 at the outer peripheral edge of the oral part, so that it will not come off. The oral ventilation ring 2 is made of silica gel and the edge of its inner ring coincides with the edge of the oral cavity space 4. At the upper position of the oral ventilation ring 2 corresponding to the nasal through hole 6 of the frame body 1, a nasal airway 17 is connected upward. The nasal airway 17 is connected and communicated with the nasal through hole 6 of the nasal groove structure 5, so that the gas exhaled from the patient's nose can enter the inside of the oral ventilation ring 2 through the nasal airway 17 after wearing this device.

[0045] Preferably, the airway strip 3 is a semi-elliptical strip that coincides with the trend of the oral ventilation ring 2 and is located at the lower end of the oral ventilation ring 2.

[0046] Two ports of the airway strip 3 are communicated with the outer side walls on both sides of the oral ventilation ring 2. The airway strip 3 is also made of silica gel, and the side walls of the airway strip 3 corresponding to the outer side of the frame body 1 are fixed to each other so that the airway strip 3 can be fixed. The airway strip 3 is a semi-elliptical strip that coincides with the trend of the oral ventilation ring 2 and reaches the lower end of the oral ventilation ring 2.

[0047] Preferably, the device further includes: a trachea 9 and a suction pump 10; two air intake ports 11 are symmetrically arranged at the positions near both sides below the airway strip 3, and the air intake ports 11 are connected to the suction pump 10 through the trachea 9.

[0048] Two air intake ports 11 are symmetrically arranged at the positions near both sides below the airway strip 3. An air suction pump 10 can be connected to the air intake ports 11 through the trachea 9, which is used to suck air from the patient's mouth and nostrils. At the same time, the two air intake ports 11 can be sealed with a cover.

[0049] Preferably, pull rings 16 are respectively arranged on both sides of the frame body 1, and a connecting strap Ⅰ14 and a connecting strap Ⅱ15 are respectively tied to the two pull rings 16.

[0050] Pull rings 16 are respectively arranged on both sides of the frame body 1. A connecting strap Ⅰ14 and a connecting strap Ⅱ15 are respectively tied to the two pull rings 16. The connecting strap Ⅰ14 and the connecting strap Ⅱ15 are elastic elastic straps for patients with different head sizes.

[0051] Preferably, mother and son magic tapes are respectively arranged on the connecting strap Ⅰ14 and the connecting strap Ⅱ15.

[0052] On a certain length area at the rear ends of the two straps, male and female Velcro are respectively provided, which can be wound around the rear side of the patient's head and adhered to each other to fix the frame body 1 at the mouth and nose of the patient's face.

[0053] When tracheal intubation operation needs to be performed on a patient, wear this device at the corresponding position on the patient's head, turn on the suction pump 10, the suction pump 10 inhales through the trachea 9 and through the air holes 8 in the inner ring of the oral ventilation ring 2 and the nasal airway 17 connecting the nasal through hole 6, and sucks away the virus-carrying gas exhaled by the patient, so that when the doctor bends down close to the patient's face, he will not be soaked by the virus-carrying air exhaled by the patient to the greatest extent, ensuring the life, health and safety of the doctor.

[0054] The innovative technical points and beneficial effects of the present invention are at least as follows:

[0055] 1. This device is used for patients with air-borne infectious infections such as COVID-19. The inner side of the inner ring of the oral ventilation ring 2 of this device is designed with annularly distributed air holes 8 for a large area of the mouth, which can suck away the gas exhaled from the mouth in the middle area similar to the effect of an oil fume extractor. A nasal airway 17 is provided at the nasal position, and the exhaled air from the nose can be sucked out through the nasal through hole 6. When the doctor bends down for intubation and is at the closest distance to the patient, it can specifically suck the virus-carrying gas from the mouth and nose of the patient closest to the doctor, thereby controlling the source of infection at the source. At the same time, it can also strongly suck the aerosol dispersion during positive pressure ventilation of the mask during tracheal intubation operation and the aerosol dispersion during tracheal intubation and extubation processes, thus avoiding the situation of the outward diffusion of virus-carrying gas from the patient's mouth and greatly ensuring the safety of the operating doctor.

[0056] 2. The airbag 13 provided on the inner side surface of the frame body 1 is shaped to fit and seal around the nose and mouth of the patient. The airbag 13 is used because the airbag 13 has effects such as soft elastic deformation, and can achieve a sealing effect for the outer sides of the mouths and noses of different patients. At the same time, it can play a buffering role in the pressing of the frame body 1, increasing the comfort of the patient. At the same time, the airbag 13 is used instead of a sponge pad or other flexible elastic deformation materials because the airbag 13 has strong airtightness and can strictly prevent the virus-carrying gas exhaled by the patient from overflowing from the airbag 13 and causing aerosol dispersion, which can further ensure the safety of the doctor.

[0057] 3. The frame body 1 adopts an outer peripheral surrounding type surface profiling structure for the nose and mouth of the patient. The nose adopts a profiling full-wrap design to ensure that all the gas exhaled from the nose enters the nasal airway 17. The mouth is designed with an oval opening to ensure that it will not block the inside of the patient's mouth when the patient opens his mouth. At the same time, the arc curvature of the outer peripheral surface conforms to the ergonomic design, ensuring the comfort of the patient to the greatest extent.

[0058] 4. The oral airway ring 2 and the airway strip 3 are both made of silica gel. The silica gel material has characteristics such as deformation and elastic recovery to a certain extent, and can form a sealed effect with the mask edge during the operation of tracheal intubation of the patient by the doctor and other operations for positive pressure ventilation with a mask on the patient, preventing the spread of aerosols.

[0059] 5. The two straps respectively connected to both sides have a certain width and have an elastic tightening effect, and can play a role in tightening and fixing for patients with different head shapes. The back ends respectively adopt male-female magic tapes, which are convenient to paste and untie, and are convenient and practical.

[0060] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A nasal and oral negative pressure air extraction device dedicated to preventing virus leakage during tracheal intubation for COVID-19 patients, characterized in that, Including: A frame body, an oral ventilation ring, an airway strip, and straps; an oral vacancy for opening the anastomosis is provided at the position of the patient's mouth on the frame body, and a nasal groove structure is provided at the position of the patient's nose; a nasal through hole is provided on the nasal groove structure, an oral ventilation ring is arranged on the outer side surface of the frame body around the oral vacancy, the airway inside the oral ventilation ring that is hollow is an annular airway, several air holes are provided on the inner circumferential surface of the oral ventilation ring, a nasal airway communicating the nasal through hole and the annular airway is provided on the oral ventilation ring, the airway strip is arranged on the oral ventilation ring and / or the frame body, both ends of the airway strip are communicated with the annular airway, an air connection port through which a trachea can be connected to an air suction pump is provided on the airway strip, and both ends of the strap are arranged on the frame body; Face fitting surface structures extend from both the oral vacancy of the frame body and the outer side of the nasal groove structure, and the curved surface radian of the face fitting surface structure fits the corresponding face of the patient; The device further includes an airbag, the airbag is arranged on the inner side surface of the frame body, the upper part of the airbag is a triangular trending structure that fits the outer peripheral shape of the nasal groove structure, the lower part of the airbag is an elliptical trending structure that fits the shape of the oral vacancy, and the airbag is in a filled state.

2. The nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of novel coronavirus, characterized in that, The end surface of the airbag that fits the patient's face is a curved surface that fits the shape of the frame body.

3. The special nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of novel coronavirus, characterized in that, Several of the air holes are evenly distributed at circumferential uniform angles on the inner circumferential surface of the oral ventilation ring.

4. The nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of novel coronavirus, characterized in that, Both the oral ventilation ring and the airway strip are made of silica gel material.

5. The nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of novel coronavirus, characterized in that, The airway strip is a semi-elliptical strip that fits the trend of the oral ventilation ring and is located at the lower end of the oral ventilation ring.

6. The nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of novel coronavirus, characterized in that, The device further includes: a trachea and an air suction pump; two of the air connection ports are symmetrically arranged at positions on both sides below the airway strip, and the air connection ports are connected to the air suction pump through the trachea.

7. The nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of novel coronavirus, characterized in that, Pull rings are respectively arranged on both sides of the frame body, and a strap Ⅰ and a strap Ⅱ that are connected to each other are respectively tied to the two pull rings.

8. The nasal and oral negative pressure air extraction device for preventing virus leakage during tracheal intubation of the novel coronavirus, as claimed in claim 7, wherein Mother and son magic tapes are respectively arranged on the strap Ⅰ and the strap Ⅱ.

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