CN205084036U - Single chamber high flow capacity nasal catheter - Google Patents

Abstract

The utility model relates to a single-chamber high-flow nasal catheter, which is characterized in that the catheter is mainly used for patients who need to inhale oxygen when using nasal gastrointestinal nutrition and nasal bronchoscopy, and includes a The pipe joint of the warm and humidified gas pipeline, the air guide tube connected to the pipe joint at one end, the outlet nozzle connected to the other end of the air guide tube, a set of nasal plug positioning sleeve arranged outside the outlet nozzle, and a fixed set on the The nasal plug in the middle of the nasal plug positioning sleeve, and a pair of ear hangers symmetrically arranged on both sides of the nasal plug positioning sleeve; an air outlet is opened on the side of the mouth of the outlet tube, and the nasal plug is facing and connected to the air outlet; according to the patient's own situation, when using the nasal plug to the left When the side or right nostril is ventilated, the tube connector, airway tube and outlet nozzle are placed on the corresponding side of the patient, the nasal plug positioning sleeve is set on the outlet nozzle, and the other nostril is used for bronchoscopy or nasogastric operation. Nutrition.

Description

Single Lumen High Flow Nasal Cannula

technical field

The utility model relates to a medical device, in particular to a single-cavity high-flow nasal catheter mainly used for patients who need to inhale oxygen when using nasal gastrointestinal nutrition and nasal bronchoscopy.

Background technique

High-flow nasal cannula (HFNC, HighFlowNasalCannula) is connected to a heated and humidified high-flow oxygen inhalation device, which can provide patients with high-flow oxygen inhalation with humidification effect, and the delivery of gas through the nose will generate a positive airway pressure (PAP) that depends on the gas flow. , PositiveAirwayPressure), which can improve the oxygenation of patients with respiratory failure, reduce the patient's work of breathing, reduce carbon dioxide retention, and reduce the patient's respiratory rate. The double-chamber nasal high-flow nasal cannula can generate positive airway pressure when used. It can provide high-flow oxygen inhalation for patients when used with high-flow oxygen inhalation devices such as AIRVO-2 respiratory humidification therapy device or Venturi and air-oxygen mixer. And the oxygen inhalation temperature, gas flow and oxygen concentration can be adjusted. Studies have proved (see [Highflownasaloxygengeneratespositiveairwaypressureinadultvolunteers.AustCritCare.2007Nov; 20(4):126-31.Epub2007Oct10.]), if the patient has mouth breathing, the effect of positive airway pressure is greatly reduced. This shows that when using a double-lumen high-flow nasal cannula, there is a certain requirement for airtightness. If only one lumen is used for ventilation and the other end is left empty, the high-flow nasal cannula will not be able to generate positive pressure. However, double-chamber HFNC needs to use two nostrils for oxygen inhalation. When some special operations are required, such as nasal feeding nutrition or nasal bronchoscopy, double-chamber HFNC will interfere with the smooth progress of these special operations, and these special operations Operation may also affect the oxygen uptake effect of the dual-chamber HFNC. Therefore, there is currently a lack of a high-flow nasal cannula that is mainly used in patients who use nasal gastrointestinal nutrition and nasal bronchoscopy, which can ensure the effect of oxygen inhalation therapy without affecting the operation of nasal gastrointestinal nutrition and bronchoscopy .

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a single-lumen high-flow nasal catheter that does not affect the nasal gastrointestinal nutrition and bronchoscopy operation while ensuring the therapeutic effect of oxygen inhalation.

In order to achieve the above object, the utility model adopts the following technical solutions: a single-lumen high-flow nasal catheter, which is characterized in that the catheter is mainly used for patients who need oxygen inhalation when using nasal gastrointestinal nutrition and nasal bronchoscopy. It includes: a pipe joint used to connect to provide sufficient heating and humidification gas pipeline, an air guide tube connected to the pipe joint at one end, an air outlet nozzle connected to the other end of the air guide tube, a set of The nasal plug positioning sleeve outside the mouth of the outlet pipe, the nasal plug fixedly arranged in the middle part of the nasal plug positioning sleeve, and a pair of ear hangers symmetrically arranged on both sides of the nasal plug positioning sleeve; An air outlet, the nasal plug is facing and communicated with the air outlet.

The nasal plugs include various sizes and models with a diameter of 5-9mm.

The size models of the nasal plugs include S, M, and L, wherein the diameter of the nasal plugs whose size is S is 5mm, the diameter of nasal plugs whose size is M is 8mm, and the diameter of nasal plugs whose size is L is 9mm.

The outlet nozzle is provided with a positioning groove, and the nasal plug positioning sleeve is sleeved on the outside of the outlet nozzle through the positioning groove.

The nasal plug positioning sleeve, the nasal plug and the ear hanger are of an integrated structure.

The utility model has the following advantages due to the adoption of the above technical scheme: 1. The single-chamber high-flow nasal cannula of the present utility model has a special design for the nasal plug position, and the diameter of the single nasal plug is larger than that of the double-chamber HFNC nasal plug (it is a double-chamber high-flow nasal plug). 1.4 times of that), to ensure that the single-lumen high-flow nasal catheter and the double-lumen HFNC have the same cross-sectional area during ventilation, so that they have the same flow rate and produce the same pressure effect, while ensuring the original oxygen inhalation effect without affecting the nasal passage Gastroenteral nutrition and bronchoscopy. 2. The utility model can be widely applied to patients who need to use nasal gastrointestinal nutrition and nasal bronchoscopy, and can also be applied to other special patients who can only use a single nostril for oxygen inhalation. Oxygen inhalation through nostril or right nostril makes HFNC more applicable.

Description of drawings

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

Fig. 2 is the structure schematic diagram that pipe joint of the present invention, air guide tube and air outlet nozzle are connected;

Fig. 3 is a structural schematic diagram of the nasal plug positioning sleeve of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

As shown in Figures 1 to 3, the single-lumen high-flow nasal catheter provided by the utility model is mainly used for patients who need to inhale oxygen when using nasal gastrointestinal nutrition and nasal bronchoscopy. Pipe joint 1 for sufficient heating and humidification gas pipeline, a plastic (this is just an example, not limited to this) air guide tube 2, an air outlet nozzle 3, a nasal plug positioning sleeve 4, a nasal plug 5 and a pair of hanging ears Frame 6; wherein, the pipe joint 1, the air guide tube 2 and the outlet nozzle 3 are connected sequentially, an outlet 31 is opened on the side of the outlet nozzle 3, and the nasal plug positioning sleeve 4 is set outside the outlet nozzle 3, and the diameter of the nasal plug 5 is 5 -9mm, the nasal plug 5 is located in the middle of the nasal plug positioning sleeve 4, facing and communicating with the air outlet 31; the ear hangers 6 are symmetrically arranged on both sides of the nasal plug positioning sleeve 4, so as to fix the nasal plug positioning sleeve 4 below the patient's nostrils.

According to the patient's own situation, when the nasal plug 5 is used to ventilate the left nostril, the equipment such as the pipe joint 1, the airway tube 2 and the outlet nozzle 3 are placed on the left side of the patient, and then the nasal plug positioning sleeve 4 is set on the outlet nozzle 3 , the right nostril is used for bronchoscopy or nasal gastrointestinal nutrition; when the nasal plug 5 is used to ventilate the right nostril, the equipment such as the tube joint 1, the airway tube 2 and the outlet nozzle 3 are placed on the right side of the patient, and then The nasal plug positioning sleeve 4 is set on the outlet nozzle 3, and the left nostril is used for bronchoscopy or nasal gastrointestinal nutrition.

In the above embodiment, the outlet nozzle 3 is provided with a positioning groove 32 , and the nasal plug positioning sleeve 4 is sleeved on the outside of the outlet nozzle 3 through the positioning groove 32 .

In the above-mentioned embodiment, the nasal plug 5 includes multiple sizes such as S, M, L, etc., wherein the nasal plug 5 whose size is S has a diameter of 5 mm, the nasal plug 5 whose size is M has a diameter of 8 mm, and the nasal plug 5 whose size is L The diameter is 9mm.

In the above-mentioned embodiment, the nasal plug positioning sleeve 4, the nasal plug 5 and the ear hanger 6 are of an integrated structure, which has good mechanical properties and can be made integrally, which is simple and convenient to manufacture.

When the utility model is used clinically, at first the size model of the nasal plug 5 is selected according to the size of the patient's nostrils, and the nasal plug 5 of a suitable size model is selected on the basis that the nasal plug 5 can cover half of the patient's nostril cross-sectional area; according to the patient's own situation, when using the nasal plug 5 Ventilate the left or right nostril, connect the tube joint 1, the airway tube 2 and the outlet nozzle 3 in sequence and place them on the corresponding side of the patient, then set the nasal plug positioning sleeve 4 on the outlet nozzle 3, and the nasal plug 5 communicates with the air outlet 31. Then connect the pipe joint 1 at the inlet end of the single-lumen high-flow nasal catheter to the end of the heated breathing circuit, and the heated breathing circuit is connected to the respiratory humidification therapeutic apparatus, Venturi or air-oxygen mixer, and the respiratory humidification therapeutic apparatus, Venturi or air The oxygen mixer is connected to the oxygen source; put the nasal plug 5 at the air outlet into the patient's nostril, and at the same time fix the nasal plug positioning sleeve 4 below the patient's nostril through the ear hangers 6 on both sides, and turn on the respiratory humidification treatment instrument, Venturi or air The oxygen mixer can provide patients with high-flow oxygen inhalation with humidification effect. The bronchoscope or nasogastric tube is inserted into the other nostril of the patient, and it can seal the nostril to a certain extent while performing nasal gastrointestinal nutrition or nasal bronchoscopy. Because the utility model has only one nasal obstruction 5 that is larger than the double-cavity high-flow nasal catheter, the patient only needs to use one nostril to inhale oxygen, so it does not affect the operation of nasal gastrointestinal nutrition and nasal bronchoscopy; for nasal bronchoscopy For patients undergoing operation and nasal gastrointestinal nutrition, the bronchoscope and nasogastric tube can relatively close the nostrils, so that the single-lumen high-flow nasal cannula can also produce a certain positive end-expiratory pressure; through in vitro experiments, double-cavity There was no significant difference in the effect of oxygen inhalation (production of PAP, inspired oxygen concentration) between the high-flow nasal cannula with lumen and the high-flow nasal cannula with single lumen.

The above-mentioned embodiments are only used to illustrate the utility model, wherein the structure of each component, the connection method, etc. can be changed, and any equivalent transformation and improvement carried out on the basis of the technical solution of the utility model should not be excluded. Outside the scope of protection of the present utility model.

Claims (6)

1. A single-lumen high-flow nasal catheter is characterized in that the catheter is mainly used in patients who need oxygen inhalation when using transnasal gastrointestinal nutrition and transnasal bronchoscopy, including: a pipe joint for connection of a gas line providing sufficient warming and humidification, an air guide tube with one end connected to the pipe joint, an outlet nozzle connected to the other end of the airway, A set of nasal plug positioning sleeves arranged outside the mouth of the outlet pipe, a nasal plug fixedly arranged in the middle of the nasal plug positioning sleeve, A pair of ear hangers symmetrically arranged on both sides of the nasal plug positioning sleeve; An air outlet is provided on the side of the nozzle of the air outlet, and the nasal plug is directly opposite to and communicated with the air outlet. 2. The single-lumen high-flow nasal catheter according to claim 1, wherein the nasal plug includes a plurality of sizes with a diameter of 5-9mm. 3. The single-chamber high-flow nasal cannula as claimed in claim 2, wherein the size model of the nasal plug comprises S, M, L, wherein, the size model is that the nasal plug diameter of S is 5 mm, and the size model is M. The diameter of the nasal plug is 8mm, and the diameter of the nasal plug of size model L is 9mm. 4. The single-lumen high-flow nasal catheter as claimed in claim 1, 2 or 3, wherein a positioning groove is arranged on the outlet nozzle, and the nasal plug positioning sleeve is sleeved on the The outlet nozzle is external. 5. The single-lumen high-flow nasal catheter according to claim 1, 2 or 3, wherein the nasal plug positioning sleeve, the nasal plug and the ear-hanging bracket are of an integrated structure. 6. The single-lumen high-flow nasal catheter according to claim 4, wherein the nasal plug positioning sleeve, the nasal plug and the ear-hanging bracket are of an integrated structure.