A disposable heat and moisture exchange filter

Abstract

The utility model discloses a kind of disposable heat and moisture exchange filter, including hollow shell;The bottom of shell is equipped with sputum discharge pipe, sputum discharge pipe is used to discharge patient sputum;The front end of shell is equipped with auxiliary pipe for being connected with oxygen pipe and sputum suction tube for sputum suction, the rear end of shell is equipped with use pipe for being communicated with patient's tracheal intubation;Shell left and right ends are respectively provided with one air inlet pipe, one filter element is arranged in each air inlet pipe;Sputum collecting container is connected with sputum discharge pipe, for collecting sputum.The utility model can simulate the function of nose, collect and retain heat and moisture in exhaled gas.The utility model is simple in structure, convenient to use, can be directly replaced, can collect sputum coughed by patient, improve lung function, can also avoid dust, bacteria and other dirt in air, inhale into lung to cause postoperative infection, can greatly alleviate the pain of patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device consumables, and in particular to a disposable heat and moisture exchange filter. Background Technology

[0002] Under normal circumstances, the nose, pharynx, larynx, and bronchi all warm and humidify inhaled air, with the nose serving as the first line of defense. The warming and humidifying effect of the airways on inhaled air is also an important aspect of maintaining the normal movement of cilia in the bronchial mucosal epithelial cells, expelling sputum, bacteria, and foreign objects from the body, and completing the "self-cleaning" function.

[0003] Establishing an artificial airway (including endotracheal intubation and tracheotomy) is a crucial measure for rescuing and treating critically ill patients. Normally, the nose, pharynx, and respiratory tract warm and humidify inhaled air. After an artificial airway is established, the inhaled air bypasses the warming and humidifying functions of the nasal cavity and upper respiratory tract, and must be entirely warmed and humidified by the trachea and the lower respiratory tract. This increases the loss of moisture from respiratory secretions, leading to dryness of the respiratory mucosa, damage to the mucociliary system, and a significant reduction in its ability to clear foreign objects. This can cause respiratory inflammation, resulting in erosion and ulceration of the respiratory mucosa, leading to bacterial infection. Experiments have shown that the rate of pulmonary infection increases with decreasing airway humidification. Using a heat and moisture exchange filter to warm and humidify the inhaled air of critically ill and anesthetized patients undergoing mechanical ventilation or tracheotomy helps protect the normal function of the cilia and glands of the respiratory mucosa. However, existing artificial noses are easily contaminated by the patient's sputum during use and cannot collect sputum, making them inconvenient to use.

[0004] Therefore, a disposable heat and moisture exchange filter is needed to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A disposable heat and moisture exchange filter includes a hollow shell; a sputum discharge tube is provided at the bottom of the shell for discharging sputum from a patient; an auxiliary tube for connecting to an oxygen tube and a suction tube for suctioning sputum are provided at the front end of the shell; a usage tube for connecting to a patient's endotracheal tube is provided at the rear end of the shell; an air inlet tube is provided at each of the left and right ends of the shell, and a filter element is provided inside each air inlet tube; a sputum collection container is connected to the sputum discharge tube for collecting sputum.

[0007] Preferably, the sputum collection container is a sputum collection cup or a sputum collection bag.

[0008] Preferably, the sputum collection container is made of disposable transparent plastic.

[0009] Preferably, the sputum collection container is connected to the sputum drainage tube by heat pressing or threaded connection.

[0010] Preferably, each intake pipe is provided with a limiting structure, which includes several baffles and a hollow cap; the hollow cap is threadedly connected to the intake pipe; several baffles are fixedly installed inside the intake pipe; and the filter element is installed between the hollow cap and the baffles.

[0011] Preferably, the suction tube is provided with several elastic sealing discs arranged in a ring array inside. The elastic sealing discs can deform to open the suction tube when the suction tool is inserted, and the elastic sealing discs can return to their original state after the suction tool is withdrawn, thus resealing the suction tube and effectively preventing bacteria from entering the patient's airway.

[0012] Preferably, one end of the suction tube is threadedly connected to the protective cover. The protective cover includes a first cover body with openings at both ends. One end of the first cover body is provided with a plurality of elastic sealing sheets arranged in a circular array, and the other end is threadedly connected to the suction tube. The elastic sealing sheets can deform to open the suction tube when the suction tool is inserted, and the elastic sealing sheets can return to their original shape after the suction tool is withdrawn, thus resealing the suction tube and effectively preventing bacteria from entering the patient's airway.

[0013] Preferably, a baffle plate is provided inside the housing, and the baffle plate is located on one side of the connection between the auxiliary tube and the housing. The baffle plate is used to prevent the patient's sputum from entering the auxiliary tube.

[0014] Preferably, the cross-section of the baffle plate is approximately concave, with the concave surface of the baffle plate facing the connection between the auxiliary pipe and the shell.

[0015] Preferably, the filter element is a sponge filter element.

[0016] Preferably, there are four elastic sealing sheets, the cross-section of which is fan-shaped, and the outer arc surface of the elastic sealing sheet is fixedly connected to or integrally formed with the inner wall of the suction tube.

[0017] Preferably, the elastic sealing sheet is made of elastic plastic.

[0018] Preferably, the tube is tightly connected to the endotracheal tube of the tracheostomy patient, and the auxiliary tube is tightly connected to the oxygen tube.

[0019] Preferably, the perforated cap includes a cap body with openings at both ends, and two sheet-like baffles are provided at one end of the cap body. The sheet-like baffles are used to block the filter element.

[0020] Preferably, the shell has a cylindrical structure.

[0021] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0022] This invention can mimic the function of the nose, collecting and retaining the heat and moisture in exhaled air. During inhalation, the air passes through the shell and is introduced into the airway in a warm and humidified state, ensuring effective and appropriate humidification of the airway. It can be attached to the external port of the endotracheal tube after pharyngeal surgery, providing excellent air filtration and humidification.

[0023] This invention has a simple structure, is easy to use, and can be directly replaced. It can collect the sputum coughed up by patients, improve lung function, and avoid the risk of postoperative infection caused by inhaling dust, bacteria, and other pollutants in the air into the lungs, thus greatly reducing the patient's suffering.

[0024] Secondly, this invention can prevent sputum from entering the auxiliary tube and causing contamination of the oxygen supply equipment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the disposable heat and moisture exchange filter of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the disposable heat and moisture exchange filter of this utility model;

[0028] Figure 3 This is a partial cross-sectional structural diagram of the disposable heat and moisture exchange filter of this utility model;

[0029] Explanation of main component symbols

[0030]

[0031]

[0032] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to imply non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] Please see Figure 1-3 This utility model provides a disposable heat and moisture exchange filter, including a hollow shell 1; a sputum discharge tube 11 is provided at the bottom of the shell 1 for discharging sputum from a patient; an auxiliary tube 12 for connecting to an oxygen tube and a suction tube 13 for suctioning sputum are provided at the front end of the shell 1; a usage tube 14 for connecting to a patient's endotracheal tube is provided at the rear end of the shell 1; an air inlet tube 15 is provided at each of the left and right ends of the shell 1, and a filter element 151 is provided inside each air inlet tube 15. Oxygen can be delivered into the shell 1 through the auxiliary tube 12. The air entering the shell 1 from the air inlet tube 15 can be filtered through the filter element 151.

[0036] In one embodiment of the present invention, the disposable heat and moisture exchange filter further includes a sputum collection container 16, which is connected to the sputum discharge tube 11 for collecting sputum.

[0037] In one embodiment of this utility model, the sputum collection container 16 is a sputum collection cup or a sputum collection bag.

[0038] In one embodiment of this utility model, the sputum collection container 16 is made of disposable transparent plastic.

[0039] In one embodiment of this utility model, the sputum collection container 16 is connected to the sputum discharge tube 11 by hot pressing, threaded connection, or heat shrinking.

[0040] In one embodiment of this utility model, each air intake pipe 15 is provided with a limiting structure, which includes a plurality of baffles 152 and a perforated cap 153; the perforated cap 153 is threadedly connected to the air intake pipe 15; the plurality of baffles 152 are fixedly disposed inside the air intake pipe 15; and the filter element 151 is disposed between the perforated cap 153 and the baffles 152. In use, the filter element 151 can be placed into the corresponding air intake pipe 15 first, and then the perforated cap 153 can be connected to the air intake pipe 15, limiting the filter element 151 between the perforated cap 153 and the baffles 152. At the same time, air can enter the housing 1 after being filtered by the filter element 151 through the perforated cap 153.

[0041] In one embodiment of this utility model, a plurality of elastic sealing sheets 131 are arranged in a ring array inside the suction tube 13. The elastic sealing sheets 131 can deform to open the suction tube 13 when the suction tool is inserted, and the elastic sealing sheets 131 can return to their original state after the suction tool is withdrawn, thus resealing the suction tube 13 and effectively preventing bacteria from entering the patient's airway.

[0042] In one embodiment of the present invention, a baffle plate 101 is provided inside the housing 1. The baffle plate 101 is located on one side of the auxiliary tube 12 where it communicates with the housing 1. The baffle plate 101 is used to prevent the patient's sputum from entering the auxiliary tube 12.

[0043] In one embodiment of this utility model, the baffle plate 101 has a generally concave cross-section, with the concave surface of the baffle plate 101 facing the connection between the auxiliary tube 12 and the housing 1. Oxygen can enter the interior of the housing 1 through the baffle plate 101, while simultaneously preventing sputum from entering the auxiliary tube 12.

[0044] In one embodiment of this utility model, the filter element 151 is a sponge filter element.

[0045] In one embodiment of this utility model, one end of the suction tube 13 is threadedly connected to the protective cover 130. The protective cover 130 includes a first cover body 132 with openings at both ends. A plurality of elastic sealing sheets 131 are arranged in a circular array at one end of the first cover body, and the other end is threadedly connected to the suction tube 13. The elastic sealing sheets 131 can deform to open the suction tube 13 when the suction tool is inserted. After the suction tool is withdrawn, the elastic sealing sheets 131 return to their original shape and reseal the suction tube 13, effectively preventing bacteria from entering the patient's airway.

[0046] In one embodiment of this utility model, there are four elastic sealing sheets 131. The cross-section of the elastic sealing sheet 131 is fan-shaped. The outer arc surface of the elastic sealing sheet 131 is fixedly connected to the inner wall of the suction tube 13 or the inner wall of the first cover or is integrally formed.

[0047] In one embodiment of this utility model, the elastic sealing sheet 131 is made of elastic plastic.

[0048] In one embodiment of this utility model, tube 14 is tightly connected to the tracheal tube of a tracheostomy patient, and auxiliary tube 12 is tightly connected to the oxygen tube.

[0049] In one embodiment of this utility model, the perforated cap 153 includes a cap body with openings at both ends, and two sheet-like baffles are provided at one end of the cap body. The sheet-like baffles are used to block the filter element 151.

[0050] In one embodiment of this utility model, the shell 1 has a cylindrical structure.

[0051] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A disposable heat and humidity exchange filter, characterized in that: It includes a hollow shell; the bottom of the shell is equipped with a sputum drainage tube for draining the patient's sputum; the front end of the shell is equipped with an auxiliary tube for connecting to an oxygen tube and a suction tube for suctioning sputum; the rear end of the shell is equipped with a usage tube that connects to the patient's endotracheal tube; an air inlet tube is provided at each of the left and right ends of the shell, and a filter element is installed inside each air inlet tube; a sputum collection container is connected to the sputum drainage tube for collecting sputum.

2. The disposable heat and humidity exchange filter as described in claim 1, characterized in that: Each intake pipe is equipped with a limiting structure, which includes several baffles and a hollow cap; the hollow cap is threadedly connected to the intake pipe; several baffles are fixedly installed inside the intake pipe; and the filter element is installed between the hollow cap and the baffles.

3. The disposable heat and humidity exchange filter as described in claim 1, characterized in that: The suction catheter has several elastic sealing discs arranged in a ring array inside. When the suction tool is inserted, the elastic sealing discs deform to open the suction catheter. After the suction tool is withdrawn, the elastic sealing discs return to their original shape and reseal the suction catheter, effectively preventing bacteria from entering the patient's airway.

4. The disposable heat and humidity exchange filter as described in claim 1, characterized in that: A baffle plate is installed inside the shell, located on one side where the auxiliary tube connects to the shell. The baffle plate is used to prevent the patient's sputum from entering the auxiliary tube.

5. The disposable heat and humidity exchange filter as described in claim 4, characterized in that: The cross-section of the baffle plate is roughly concave, with the concave surface facing the connection between the auxiliary pipe and the shell.

6. The disposable heat and humidity exchange filter as described in claim 3, characterized in that: There are four elastic sealing strips. The cross-section of the elastic sealing strip is fan-shaped. The outer arc surface of the elastic sealing strip is fixedly connected to the inner wall of the suction tube or integrally formed.

7. The disposable heat and humidity exchange filter as described in claim 1, characterized in that: One end of the suction tube is threaded to a protective cover. The protective cover includes a first cover body with openings at both ends. One end of the first cover body is provided with a number of elastic sealing strips arranged in a circular array, and the other end is threaded to the suction tube. When the suction tool is inserted, the elastic sealing strips deform to open the suction tube. After the suction tool is withdrawn, the elastic sealing strips return to their original shape and reseal the suction tube, effectively preventing bacteria from entering the patient's airway.

8. The disposable heat and moisture exchange filter according to any one of claims 1-7, characterized in that: The filter element is a sponge filter element.

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