Airway humidifying device

Abstract

The invention relates to the technical field of airway humidification. The airway humidifying device comprises a cylindrical shell, the middle section of the shell is a connecting section, and the left section and the right section of the shell are gas exchange sections; the back face of the connecting section is provided with a connecting opening used for being in butt joint with an air connector, the front face of the connecting section is provided with a sputum discharging opening, and the sputum discharging opening is provided with a sealing door capable of being opened and closed. An end cover is arranged at the outer end of the gas exchange section, and a primary filtering grid is formed on a cover body of the end cover; and a temperature and humidity interception assembly is arranged in the gas exchange section. According to the invention, a transverse cylindrical design is adopted, the upper, lower, front and back volumes are small, and interference to normal activities of a patient can be reduced to the greatest extent on the basis of meeting functional requirements; meanwhile, the sputum excretion opening is formed in the opposite side of the connecting opening, sputum excretion operation can be conducted by opening the sputum excretion opening, the whole device does not need to be taken down, and operation convenience is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of airway humidification, and in particular to an airway humidification device. Background Art

[0002] Humidification and warming of inhaled gas is an important part of artificial airway management. The upper respiratory tract includes the nose, pharynx, and larynx, which is the gateway for gas to enter the lungs. It has functions such as humidification, warming, and filtering air. With the establishment of an artificial airway, the upper respiratory tract's functions of heating, humidification, and filtering gas are destroyed. Only by fully warming and humidifying the inhaled gas can the normal physiological function and defense function of the patient's airway be maintained. For some patients with upper respiratory tract dysfunction who need long-term mechanical ventilation treatment through an artificial airway, an incision is generally made under the throat of the neck, and an air connector is placed through the serial port. The exposed section of the air connector is connected to an artificial nose in the outside world, and the exchange of gas with the outside world is achieved through the artificial nose. However, most of the artificial noses in the prior art are disc-shaped structures, with connecting tubes arranged at the center of both ends, one connecting tube being connected to the installed air joint, and the other end being connected to the outside world; a membrane or sheet for intercepting moisture, heat and filtering air is clamped in the center of the disc. When the human body breathes, the moisture and heat of the exhaled gas are intercepted by the membrane or sheet, and when the gas is inhaled, the outside air is filtered and the moisture and heat are returned to the human body. However, this structure has a large size in the longitudinal direction (front and back direction), which will interfere with the normal activities of the patient. On the other hand, when performing the expectoration operation, the artificial nose needs to be removed first, which increases the cumbersomeness of the operation and the discomfort of the patient. Summary of the invention

[0003] The object of the present invention is to provide an airway humidification device which does not affect the normal activities of patients and is convenient for expectoration operation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is an airway humidification device, comprising a cylindrical shell, the middle section of the shell is a connecting section, and the left and right sections are gas exchange sections; the back of the connecting section is provided with a connection port for docking with a gas joint, the front of the connecting section is provided with a sputum discharge port, and the sputum discharge port is provided with an openable and closable sealing door;

[0005] The outer end of the gas exchange section is provided with an end cap, and a primary filter grid is formed on the cover body of the end cap; a temperature and humidity interception assembly is provided inside the gas exchange section; the temperature and humidity interception assembly comprises a central tube arranged axially inside the gas exchange section, the outer end of the central tube is closed, the inner end is connected to the connecting section and is provided with fine filter paper, and the interior of the central tube is filled with medical cotton; a plurality of air-permeable micropores are provided on the side wall of the central tube; the temperature and humidity interception assembly also comprises a plurality of layers of filter paper wrapped outside the central tube, and a gas channel is formed between the filter paper located on the outermost layer and the outer shell;

[0006] An air guide plate is also provided on the inner side of the end cover, and the air guide plate is pressed against the end of the center tube through the end cover; strip air holes are provided at the edge of the air guide plate opposite to the gas channel, and guide edges for guiding the airflow to the strip air holes are also provided on the plate surface of the air guide plate facing the end plate.

[0007] Preferably, a group of airflow guiding holes is provided at one end of each layer of filter paper, and the airflow guiding holes on two adjacent layers of filter paper are staggered.

[0008] Preferably, the guide edges are arc-shaped and are radially spirally distributed from the center of the air guide disk toward the outer edge.

[0009] Preferably, the upper end of the sealing door is hinged to the upper side wall of the connecting port, and the lower end of the sealing door is connected to the lower side wall of the connecting port via an elastic buckle; and a paddle for moving the sealing door is provided on the outer surface of the door body of the sealing door.

[0010] Preferably, an oxygen supply cavity is provided at the bottom of the connecting section, and the oxygen supply cavity and the connecting section are connected via a through hole; an oxygen supply connecting pipe for connecting to an oxygen tube is provided at the bottom of the oxygen supply cavity.

[0011] Preferably, the oxygen supply connecting pipe can be extended out of the oxygen supply cavity or received in the oxygen supply cavity, and when extended out of the oxygen supply cavity, the oxygen supply connecting pipe is opened, and when received in the oxygen supply cavity, the oxygen supply connecting pipe is closed;

[0012] A vertical extension tube is arranged on the inner surface of the bottom of the oxygen delivery cavity, and the oxygen delivery connecting pipe is inserted into the extension tube and forms a rotatable sliding fit with the extension tube; a plurality of vertical sliding grooves are evenly distributed in an annular shape on the inner side wall of the extension tube, and transverse locking notches are arranged at both ends of the sliding grooves, and a positioning block matched with the sliding grooves and the locking notches is arranged on the side wall of the oxygen delivery connecting pipe;

[0013] A retaining plate is fixedly arranged at the center of the through hole through a short rod. The size of the retaining plate is larger than the size of the upper end of the oxygen supply pipe, and an annular air gap is formed between the outer edge of the retaining plate and the inner wall of the through hole. A sealing rubber ring is also arranged at the upper end of the oxygen supply pipe.

[0014] When the oxygen supply pipe is received in the oxygen supply cavity, the sealing rubber ring at the upper end of the oxygen supply pipe is tightly pressed against the abutment plate, and the positioning block is rotated into the locking notch at the upper end to form a lock; when the oxygen supply pipe is extended out of the oxygen supply cavity, the sealing rubber ring at the upper end of the oxygen supply pipe is separated from the abutment plate, and the positioning block is rotated into the locking notch at the lower end to form a lock.

[0015] Preferably, the end cover is threadedly connected to the gas exchange section.

[0016] Preferably, a support ring is provided at the center of the connection port through a support rod; the cross section of the support ring is in a C-shape with the opening facing inward, and a sliding ring is provided inside the support ring.

[0017] Preferably, a fixing seat for connecting with an elastic band is also provided on the back of the shell.

[0018] The beneficial effects of the present invention are concentrated in: adopting a horizontal cylindrical design, the volume of the upper and lower, front and back are all small, which can minimize the interference with the patient's normal activities on the basis of meeting the functional requirements; at the same time, a sputum discharge port is set on the opposite side of the connecting port, and the sputum discharge operation can be performed by opening the sputum discharge port, without removing the entire present invention, which greatly improves the convenience of operation. Specifically, during the use of the present invention, when exhaling, the gas is discharged through the connecting port, the connecting section, and the gas exchange section; in the gas exchange section, the air flow is discharged through the fine filter paper, the central tube, the air micropores, the filter paper, the strip pores, and the end cap in sequence. During the discharge process, the moisture and heat in the air flow are doubly intercepted by the medical cotton and the filter paper in the central tube, and are returned to the human body during inhalation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the front side of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the back side of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0023] Figure 5 is a schematic diagram of the structure of the air guide disc;

[0024] Figure 6 It is a structural schematic diagram of the sliding groove and locking notch on the extension tube. DETAILED DESCRIPTION

[0025] like Figure 1-6 As shown, an airway humidification device is mainly used for daily care operations for patients who have had artificial airway incisions (throat) for a long time. Compared with the existing conventional disc-shaped heat and moisture exchanger, it has a more compact and reasonable structure, has less impact on the patient's normal activities such as raising and lowering the head, and is convenient for subsequent sputum removal care operations.

[0026] like Figure 1As shown, the main body of the present invention includes a cylindrical shell 0, which is generally made of a transparent resin material, is easy to observe, and has a light structure and low cost. The middle section of the shell 0 is a connecting section 1, and the left and right sections are gas exchange sections 2. The connecting section 1 is used to connect with the gas joint inserted into the human body, and the gas exchange section 2 is used to exchange with the outside air and realize the interception and return of moisture and heat.

[0027] like Figure 1 and 2 As shown, the back of the connecting section 1 is provided with a connecting port 3 for connecting with the gas joint. The connecting port 3 and the gas joint can be connected by threaded connection, plug-in connection, etc. In order to improve the wearing stability of the present invention during use, it can also be tied around the patient's neck by an elastic band for auxiliary fixation, such as Figure 2 As shown in FIG, a fixing seat 29 for connecting with an elastic band may be further provided on the back of the housing 0. The fixing seat 29 may be in various forms, which are not limited in the present invention.

[0028] A core improvement of the present invention is that a sputum discharge port 4 is provided on the front of the connecting section 1, and a sealable door 5 is provided at the sputum discharge port 4. After the connecting port 3 is connected to the air joint, the sealable door 5 is on the opposite side thereto, and the sputum suction tube can be inserted into the air joint and the patient's airway through the connecting port 3 by opening the sealable door 5, so as to achieve sputum discharge and suction.

[0029] During the sputum suction operation, in order to improve the convenience of the operation and realize the overhead support of the sputum suction tube, so as to facilitate its rotation angle and operation orientation, a better approach of the present invention may also be to set a support ring 27, through which the sputum suction tube is overhead positioned. The specific structural form may be as follows Figure 2 and 3 As shown in the figure, a support ring 27 is provided at the center of the connection port 3 through a support rod. The cross section of the support ring 27 is in a C-shape with the opening facing inward, and a sliding ring 28 is provided inside the support ring 27. When in use, the sputum suction tube directly contacts the sliding ring 28. Since the sliding ring 28 can rotate automatically following the rotation of the sputum suction tube, it can effectively reduce the rotational friction, facilitate the adjustment of the direction and angle of the sputum suction tube after it penetrates into the airway, and improve the convenience of operation.

[0030] Regarding the design of the sealing door 5, there are many structures, such as Figure 1As shown in , the sputum discharge port 4 can be designed to be square-shaped, the upper end of the sealing door 5 is hinged to the upper side wall of the connecting port 3, and the lower end of the sealing door 5 is connected to the lower side wall of the connecting port 3 through an elastic buckle 16 to ensure good sealing. When opening, a little force can be applied to contact the elastic buckle 16 to clamp the sealing door 5. The outer surface of the sealing door 5 is provided with a paddle 17 for moving the sealing door 5, which is more convenient to use. Of course, it is also feasible to lock the sealing door 5 by other forms such as bolt fixing, magnetic fixing, etc., but generally speaking, the form of the elastic buckle 16 is simpler and easier to operate.

[0031] As another core structure of the present invention, the housing 0 is designed to be horizontally placed as a whole, and an end cap 6 is provided at the outer end of the gas exchange section 2, and the end cap 6 is threadedly connected or clamped to the gas exchange section 2. A primary filter grid is formed on the cover body of the end cap 6 to allow gas to enter and exit, and to perform preliminary filtering of large particle impurities in the inhaled gas. Figure 3 As shown in FIG. 1 , a temperature and humidity interception component is disposed inside the gas exchange section 2 of the present invention.

[0032] As the name implies, its function is to retain the moisture and heat in the exhaled gas during gas exchange and return the moisture and heat during inhaled gas. Figure 3 As shown, the temperature and humidity interception component includes a central tube 7 arranged axially in the gas exchange section 2, the outer end of the central tube 7 is closed, the inner end is connected to the connecting section 1 and is provided with a fine filter paper 8, and the interior of the central tube 7 is filled with medical cotton 9. The medical cotton 9 has an extremely excellent moisture interception effect. Most of the water vapor in the exhaled gas can be absorbed by the medical cotton 9 and adsorbed and stored in the central tube 7.

[0033] The side wall of the central tube 7 is provided with a plurality of air-permeable micropores 10, which are evenly distributed on the side wall of the entire central tube 7. The temperature and humidity interception assembly also includes a plurality of layers of filter paper 11 wrapped outside the central tube 7, and a gas channel 12 is formed between the outermost filter paper 11 and the housing 0. When the gas passes through the filter paper 11, it can not only filter the inhaled gas, but also secondary intercept the moisture and heat when the gas is exhaled.

[0034] Since the airflow inhalation path of the present invention enters from the end of the housing 0 and then converges from the periphery toward the center and enters the central tube, in order to better guide the airflow, combined with Figure 3 and 5As shown in , an air guide plate 13 is also provided on the inner side of the end cover 6, and the air guide plate 13 is pressed against the end of the center tube 7 through the end cover 6. Strip-shaped air holes 14 are provided at the edge of the air guide plate 13 opposite to the gas channel 12, and guide edges 15 for guiding the airflow to the strip-shaped air holes 14 are also provided on the disk surface of the air guide plate 13 facing the end cover 6. After the airflow enters from the end cover 6, it can be relatively evenly and orderly dispersed to the strip-shaped air holes 14 under the guiding effect of the guide edges 15, and finally enter the gas channel 12, passing through multiple layers of filter paper in sequence. The guide edges 15 can be radial straight edges, or they can be straight edges as shown in FIG. Figure 5 As shown in FIG. 1 , the guide ribs 15 are arc-shaped and are radially spirally distributed from the center of the air guide plate 13 toward the outer edge.

[0035] On this basis, since the present invention is provided with multiple layers of filter paper 11, in order to ensure that the gas has a larger contact area with the filter paper 11, a better approach may also be that a group of airflow guide holes 40 are provided at one end of each layer of the filter paper 11, and the airflow guide holes 40 on the two adjacent layers of filter paper 11 are staggered. Through such a design, since the flow resistance at the airflow guide holes 40 is relatively small, the airflow guide holes 40 can guide the airflow toward the airflow guide holes 40, thereby making the overall flow path of the airflow more "circuitous", and in the process of "circuitous" flow, it also passes through the filter paper 11 synchronously, so that the overall effective contact area of ​​the filter paper 11 becomes larger. The aperture of the airflow guide hole 40 is generally not too large, and it needs to be adaptively adjusted according to the gap between the two layers of filter paper 11, so that it can play the role of guiding the airflow without causing filtering failure.

[0036] For some patients, in addition to the function of heat and moisture exchange, the present invention can often be used as an oxygen supply interface, so the present invention is usually provided with an oxygen supply cavity 18 at the bottom of the connecting section 1, and the oxygen supply cavity 18 is connected to the connecting section 1 through a through hole 19. An oxygen supply connecting pipe 20 for connecting to an oxygen tube is provided at the bottom of the oxygen supply cavity 18 to facilitate oxygen supply operation.

[0037] The size of the oxygen supply pipe 20 should not be too short, otherwise it will have a certain impact on the convenience and stability of the connection. However, if it is too long, the overall upper and lower dimensions of the present invention will increase, which will affect the comfort and mobility when worn. For this reason, a better approach of the present invention is that the oxygen supply pipe 20 can be extended out of the oxygen supply cavity 18 or stored in the oxygen supply cavity 18, and when extended out of the oxygen supply cavity 18, the oxygen supply pipe 20 is opened, and when stored in the oxygen supply cavity 18, the oxygen supply pipe 20 is closed.

[0038] To achieve the above functions, the present invention can adopt the following scheme: Figure 3 and 4As shown in the figure, a vertical extension tube 21 is provided on the inner surface of the bottom of the oxygen delivery cavity 18, and the oxygen delivery connecting pipe 20 is inserted into the extension tube 21 and forms a rotatable sliding fit with the extension tube 21, that is, the oxygen delivery connecting pipe 20 can slide up and down and rotate in the extension tube 21. However, the sealing performance should be guaranteed, and the sealing can be strengthened by adding a sealing ring. A plurality of vertical sliding grooves 22 are evenly distributed in an annular shape on the inner side wall of the extension tube 21, and both ends of the sliding grooves 22 are provided with transverse locking notches 23, and the side wall of the oxygen delivery connecting pipe 20 is provided with a positioning block 24 that matches the sliding groove 22 and the locking notch 23.

[0039] In general, if Figure 4 and 6 As shown in FIG. 1 , when the oxygen supply pipe 20 is pushed to the uppermost end, the oxygen supply pipe 20 is rotated so that the positioning block 24 thereon can be inserted into the locking notch 23 . Similarly, when the oxygen supply pipe 20 is extended to the lowermost end, the same operation method can be used for locking.

[0040] To achieve opening when extended and closing when stored, the structure that can be used is as follows: Figure 4 As shown in the figure, a retaining plate 25 is fixedly arranged at the center of the through hole 19 by a short rod, and the size of the retaining plate 25 is larger than the size of the upper end of the oxygen supply pipe 20, and an annular air gap is formed between the outer edge of the retaining plate 25 and the inner wall of the through hole 19. A sealing rubber ring 26 is also arranged at the upper end of the oxygen supply pipe 20.

[0041] When the oxygen supply pipe 20 is received in the oxygen supply cavity 18, the sealing rubber ring 26 at the upper end of the oxygen supply pipe 20 is pressed against the retaining plate 25, and the positioning block 24 is rotated to the locking notch 23 at the upper end to form a lock. When the oxygen supply pipe 20 is extended out of the oxygen supply cavity 18, the sealing rubber ring 26 at the upper end of the oxygen supply pipe 20 is separated from the retaining plate 25, and the positioning block 24 is rotated to the locking notch 23 at the lower end to form a lock.

[0042] During the use of the present invention, when exhaling, the gas is discharged through the connecting port 3, the connecting section 1, and the gas exchange section 2; in the gas exchange section 2, the air flow is discharged through the fine filter paper 8, the central tube 7, the air permeation micropores 10, the filter paper 11, the strip pores 14, and the end cap 6 in sequence, and the moisture and heat in the air flow are doubly intercepted by the medical cotton 9 in the central tube and the filter paper 11 during the discharge process, and are returned to the human body during inhalation. The present invention adopts double moisture and heat interception and return, has the advantage of good moisture and heat interception and return efficiency, and has a compact and reasonable volume, which is convenient for expectoration operation.

Claims

1. An airway humidification device, characterized in that: The invention comprises a cylindrical outer shell (0), wherein the middle section of the outer shell (0) is a connecting section (1), and the left and right sections are gas exchange sections (2); the back of the connecting section (1) is provided with a connecting port (3) for docking with a gas joint, the front of the connecting section (1) is provided with a sputum discharge port (4), and the sputum discharge port (4) is provided with an openable and closable sealing door (5); The outer end of the gas exchange section (2) is provided with an end cover (6), and a primary filter grid is formed on the cover body of the end cover (6); a temperature and humidity interception assembly is provided inside the gas exchange section (2); the temperature and humidity interception assembly comprises a central tube (7) arranged along the axial direction and arranged inside the gas exchange section (2); the outer end of the central tube (7) is closed, the inner end is connected to the connecting section (1) and is provided with fine filter paper (8), and the interior of the central tube (7) is filled with medical cotton (9); a plurality of air-permeable micropores (10) are provided on the side wall of the central tube (7); the temperature and humidity interception assembly also comprises a plurality of layers of filter paper (11) coated outside the central tube (7), and a gas channel (12) is formed between the outermost layer of filter paper (11) and the outer shell (0); An air guide plate (13) is also provided on the inner side of the end cover (6), and the air guide plate (13) is pressed against the end of the central tube (7) through the end cover (6); strip-shaped air holes (14) are provided at the edge of the air guide plate (13) opposite to the gas channel (12), and a guide edge (15) for guiding air flow to the strip-shaped air holes (14) is also provided on the plate surface of the air guide plate (13) facing the end cover (6).

2. The airway humidification device according to claim 1, characterized in that: A group of airflow guiding holes (40) is provided at one end of each layer of filter paper (11), and the airflow guiding holes (40) on two adjacent layers of filter paper (11) are staggered.

3. The airway humidification device according to claim 1, characterized in that: The guide edges (15) are arc-shaped and are radially and spirally distributed from the center of the air guide plate (13) toward the outer edge.

4. The airway humidification device according to claim 1, characterized in that: The upper end of the sealing door (5) is hinged to the upper side wall of the connection port (3), and the lower end of the sealing door (5) is connected to the lower side wall of the connection port (3) via an elastic buckle (16); the outer surface of the sealing door (5) is provided with a paddle (17) for moving the sealing door (5).

5. The airway humidification device according to claim 1, characterized in that: An oxygen supply cavity (18) is provided at the bottom of the connecting section (1), and the oxygen supply cavity (18) and the connecting section (1) are connected via a through hole (19); an oxygen supply connecting pipe (20) for connecting to an oxygen tube is provided at the bottom of the oxygen supply cavity (18).

6. The airway humidification device according to claim 5, characterized in that: The oxygen supply connecting pipe (20) can extend out of the oxygen supply cavity (18) or be received in the oxygen supply cavity (18), and when extending out of the oxygen supply cavity (18), the oxygen supply connecting pipe (20) is opened, and when received in the oxygen supply cavity (18), the oxygen supply connecting pipe (20) is closed; A vertical extension tube (21) is arranged on the inner surface of the bottom of the oxygen delivery cavity (18), and the oxygen delivery connecting pipe (20) is inserted into the extension tube (21) and forms a rotatable sliding fit with the extension tube (21); a plurality of vertical sliding grooves (22) are evenly distributed in an annular shape on the inner side wall of the extension tube (21), and transverse locking notches (23) are arranged at both ends of the sliding grooves (22); and a positioning block (24) adapted to the sliding grooves (22) and the locking notches (23) is arranged on the side wall of the oxygen delivery connecting pipe (20); A stop plate (25) is fixedly arranged at the center of the through hole (19) via a short rod. The size of the stop plate (25) is larger than the size of the upper end of the oxygen supply pipe (20). An annular air gap is formed between the outer edge of the stop plate (25) and the inner wall of the through hole (19). A sealing rubber ring (26) is also arranged at the upper end of the oxygen supply pipe (20). When the oxygen supply pipe (20) is received in the oxygen supply cavity (18), the sealing rubber ring (26) at the upper end of the oxygen supply pipe (20) is tightly pressed against the stop plate (25), and the positioning block (24) is rotated into the locking notch (23) at the upper end to form a lock; when the oxygen supply pipe (20) is extended out of the oxygen supply cavity (18), the sealing rubber ring (26) at the upper end of the oxygen supply pipe (20) is separated from the stop plate (25), and the positioning block (24) is rotated into the locking notch (23) at the lower end to form a lock.

7. The airway humidification device according to claim 1, characterized in that: The end cover (6) is threadedly connected to the gas exchange section (2).

8. The airway humidification device according to claim 1, characterized in that: A support ring (27) is arranged at the center of the connection port (3) via a support rod; the cross section of the support ring (27) is in a C-shape with the opening facing inwards, and a sliding ring (28) is arranged inside the support ring (27).

9. The airway humidification device according to claim 1, characterized in that: The back of the housing (0) is also provided with a fixing seat (29) for connecting with an elastic binding band.

Images